EP3731997A1 - Hydraulikwerkzeug für eine zug- und/oder pressvorrichtung - Google Patents
Hydraulikwerkzeug für eine zug- und/oder pressvorrichtungInfo
- Publication number
- EP3731997A1 EP3731997A1 EP18830478.6A EP18830478A EP3731997A1 EP 3731997 A1 EP3731997 A1 EP 3731997A1 EP 18830478 A EP18830478 A EP 18830478A EP 3731997 A1 EP3731997 A1 EP 3731997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- tool
- screwdriver
- working piston
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003825 pressing Methods 0.000 title claims abstract description 59
- 239000012530 fluid Substances 0.000 claims abstract description 75
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 239000000872 buffer Substances 0.000 claims description 8
- 238000004080 punching Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 239000013013 elastic material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 241000124008 Mammalia Species 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/005—Hydraulic driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/002—Drive of the tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
- B21D28/343—Draw punches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/16—Drives for riveting machines; Transmission means therefor
- B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
- B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
- B25B27/064—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
Definitions
- the invention relates to a hydraulic tool for driving a pulling and / or pressing device.
- the invention particularly relates to a hydraulic tool, which is designed as an attachment for a screwdriver, in particular cordless screwdriver, and with which hydraulic tools from setting rivets, in particular blind rivets, and tools for punching or pressing and pressing of
- Pressure generator which is designed as a hand-held device and with which in particular riveting tools can be operated.
- the invention is based on the object to provide a tool, in particular a hydraulic tool for driving a pulling and / or pressing device, which is designed to be powerful and compact, but at the same time can be produced particularly easily.
- the object of the invention is already by a
- Pressing device as well as by a tool with a pulling and / or pressing device according to one of the independent
- the invention can be found in the subject matter of the dependent claims, the description and the drawings.
- the invention relates to a hydraulic tool for driving a pulling and / or pressing device.
- the invention relates to a hydraulic tool by means of which rivets, in particular blind rivets, punch rivets and two-piece rivets are set.
- the hydraulic tool can also be used to drive a pressing device, for example for punching or pressing or pressing in components.
- the hydraulic tool comprises a drive shaft which can be attached to a screwdriver.
- a screwdriver that is
- Hydraulic tool on an electric screwdriver in particular a cordless screwdriver attachable.
- the hydraulic tool comprises a hydraulic pump, which is driven by the drive shaft and which pumps hydraulic fluid into the working space of a working piston.
- a first aspect of the invention thus relates to the fact that the hydraulic tool on a commercial
- Screwdriver in particular a cordless screwdriver, can be attached.
- Such devices e.g. include an electric motor, are available in almost every workshop and also still quite inexpensive.
- a pump piston oscillating moves according to a preferred embodiment of the invention, which pumps hydraulic fluid into the working space of a hydraulic working piston.
- the tool thus comprises a hydraulic pump piston, also called plunger, which is part of the hydraulic pump which pumps hydraulic fluid into the working space of the working piston by means of an oscillating movement of the pump piston.
- the working piston has a larger, pressurized area than the pump piston.
- the pump piston has a larger, pressurized area than the pump piston.
- Working piston of a surface acted upon by hydraulic fluid (based on the piston surface of at least one side of the working piston) forth at least twenty, preferably fifty, preferably up to 100 times as large as the
- the screwdriver can achieve a pressure in the working space of the working piston of more than 500 bar.
- the working cylinder can be preferably pressure and / or tensile forces of about
- the hydraulic tool according to the invention can also be constructed of relatively few components, which can be a compact design as a handheld device.
- the hydraulic tool according to the invention is thus constructed in a modular manner such that a tool can be designed for different tasks via various attachments, which are coupled to the working piston.
- a blind riveting tool For example, a blind riveting tool, a tool for setting two-piece rivets, and a punching tool.
- the pump piston is oscillated by means of an eccentric.
- an eccentric shaft rotates in two ball or needle bearings.
- Eccentric mounted which is positively connected to the pump piston. This allows for a narrow space
- the pump piston via a suction and pressure valve pumps the hydraulic fluid into the working space of the working piston.
- the pumping piston preferably has a stroke of more than 1 mm and less than 10 mm, preferably from 2 to 7 mm. In a further development of the invention, this includes
- Hydraulic tool a memory for hydraulic fluid, which serves as a buffer volume when moving the working piston.
- the working piston of the hydraulic tool is preferably designed as a differential piston.
- a front piston surface in particular due to a tool holder, a smaller acted upon by hydraulic fluid surface than the rear piston surface.
- Resetting the working piston behind the working piston displaces more hydraulic fluid than flows back into the working piston before resetting. This can be compensated by the memory.
- the hydraulic tool via a control member in the positions forward or backward movement of the working piston can be set.
- this preferably moves forward due to the pressure in the reservoir for hydraulic fluid, whereas the working piston remains in its position for retracting when the cordless screwdriver is not actuated. So when riveting or punching the workpiece can be slow
- the hydraulic tool is preferably purely mechanical with the above-described setting or Press tool attachment coupled, which makes the provision of a hydraulic valve avoidable.
- the reservoir for hydraulic fluid behind the working piston and arranged laterally offset from the drive shaft.
- the memory for hydraulic fluid is designed such that it is in one with a screwdriver
- a first portion of the housing includes the working space with the working piston and is preferably in front of the
- the coupled tool attachment is preferably arranged axially to the drive shaft of the screwdriver, so that possibly the ergonomic shape of the screwdriver and its
- Control device can continue to be used.
- Hydraulic fluid extends laterally offset from Drive shaft and is therefore arranged in the connected state next to or above the housing of the screwdriver.
- hydraulic pump is arranged.
- the pump piston is preferably transversely, in particular
- the eccentric can be connected in a line with the drive shaft and drive the pump piston. This also facilitates the provision of a
- the hydraulic tool comprises a control member, depending on the actuation of hydraulic fluid is conveyed into a working space of the working piston either in front of or behind the working piston.
- the control member is thus designed so that the hydraulic tool can be placed in two operating states, either for pressing or pulling.
- hydraulic fluid is pumped into the working space behind the working piston by the hydraulic pump,
- control member is preferably with a
- the hydraulic tool is designed such that in the basic position of the control member of the
- the drive shaft of the screwdriver drives the hydraulic pump and the working piston is withdrawn with such a high force that a forming process, for example the setting operation of a blind rivet, can be effected.
- control valve can, as it is provided in one embodiment of the invention, comprise a transverse, in particular perpendicular to the working piston extending rod, over which channels running along the rod are opened and closed.
- the control valve can in particular via a
- the reservoir for hydraulic fluid is preferably connected upstream of the hydraulic pump.
- the memory preferably buffers a lot
- Hydraulic fluid that is at least as large, but preferably at least twice the volume of the
- the hydraulic fluid reservoir may include a spring biased piston. This piston puts permanent pressure on the in the memory
- a gas pressure accumulator in which a diaphragm or a piston is biased by gas pressure.
- the pressure in the reservoir for hydraulic fluid is preferably 5 to 30, more preferably 8 to 15 bar.
- Control valve actuated without activating the screwdriver, so the working piston moves solely due to this pressure in the front end position. This is done in particular by that the working piston is designed as a differential piston.
- this is a front
- the working piston always advances on actuation of the directional control valve without activation of the screwdriver, so that e.g. When setting a rivet, the setting punch can be moved slowly to the workpiece without energy expenditure.
- Hydraulic fluid recharged as that behind the
- this includes
- Hydraulic tool a pressure control valve, which is preferably designed as a full-stroke safety valve and which preferably offers the possibility of the maximum
- the valve From a pre-set maximum pressure, the valve opens and prevents exceeding the preset operating pressure and thus the permissible pressure or
- cordless screwdriver usually has an adjustable Torque limitation feature. This can be used advantageously to limit the force exerted by the working piston.
- Hydraulic tool a torque arm, which is designed such that it is supported on the housing of the screwdriver.
- the torque arm is on the
- Storage housing arranged for hydraulic fluid.
- the hydraulic tool is supported on at least one side, preferably on both sides of the housing from. It is therefore not necessary, the housing of the hydraulic tool by more
- Assembly steps such as bolting to the housing of the screwdriver to couple.
- the counter torque can, as with another
- Embodiment is provided, be exercised by a handle.
- Hydraulic tool coupled tool attachment include a handle.
- Handle preferably without tools, removable.
- the tool e.g. the tool to a right or left handed
- an elastic coupling is arranged between the drive shaft and the hydraulic pump.
- the elastic coupling can be
- a component made of elastic material such as an elastic ring
- the drive shaft with the hydraulic pump in particular with a hydraulic pump, which comprises an oscillating moving pump piston, be connected.
- the elastic coupling can be integrated in particular in the housing of the hydraulic tool.
- the hydraulic tool comprises a Futterarret ist for
- Screwdriver especially for a cordless screwdriver.
- the Futterarretmaschine can in particular one with the
- Drive shaft connected bell include which is slidable over the lining of the cordless screwdriver and which by means of a clamping element, in particular a clamping ring, is connectable to the chuck.
- the drive shaft comprises a flywheel.
- the flywheel also serves to provide a smoother run, since the force impact due to an alternating torque is thus absorbed by the pump piston.
- the flywheel may be formed in particular as a bell above described Futterarret mich.
- the invention further relates to a hydraulic tool for driving a pulling and / or pressing device,
- a hydraulic tool which, as described above, is configured, with the exception that this does not necessarily have to be designed as an attachment for a screwdriver.
- This embodiment of the invention therefore also relates to hydraulic tools, in which the drive shaft is driven by a motor, in particular an electric or pneumatic motor, which in the housing of the
- Hydraulic tool is installed.
- the hydraulic tool can be constructed as described above. Via a drive shaft, a hydraulic pump is driven, which pumps hydraulic fluid into the working space of a working piston.
- Hydraulic pump preferably comprises an oscillating movable pump piston. About the pump piston is
- the working piston is in turn with a connection for a setting or
- Hydraulic tool on a pressure-preloaded memory for hydraulic fluid which serves as a buffer volume when moving the working piston designed as a differential piston.
- the hydraulic tool is preferably formed by the
- Screwdriver is moved to an end position.
- the tool has such a feed, through which in a non-actuated state of the hydraulic pump with the Piston rod of the working piston connected tool attachment is moved up to the workpiece without exerting so much force that a forming operation is effected.
- the pump piston is preferably moved in an oscillating manner by means of an eccentric via a drive shaft.
- the invention further relates to a tool with a pulling and / or pressing device which can be driven by a screwdriver.
- the invention relates to a hydraulic tool as described above.
- the subject of the invention may also be a tool with a pull or
- Pressing device in particular a tool for setting rivets, which is not hydraulically, but driven on the basis of another principle, for example mechanically by means of a spindle via the screwdriver.
- the tool can be coupled via a drive shaft with the screwdriver.
- a drive shaft with the screwdriver.
- the drive shaft which protrudes from a housing of the tool, the tensile and / or
- the tool is over a
- Torque limiter of the screwdriver connectable, such that when a maximum torque is exceeded, a torque clutch of the screwdriver is opened.
- the invention thus relates to a tool that in
- Limiting the torque in particular an adjustment of the cordless screwdriver, uses to limit the force of the pulling and / or pressing device.
- the housing of the tool is supported on the adjusting device for the torque of the cordless screwdriver. Upon reaching a maximum torque, the housing of the tool rotates away with the pulling or pressing device and opens the
- tool attachment and housing of the tool are rotatably connected to each other in such a way that, starting from a design-related frictional torque, the tool attachment rotates relative to the housing of the tool.
- Torque limit of the screwdriver held the housing of the tool. Increases, for example, towards the end of a setting process, the torque between Screwdriver and housing on, so the maximum torque is exceeded and the housing of the
- Tool with the pulling and / or pressing device can rotate relative to the cordless screwdriver.
- the torque coupling is opened via the torque arm, which acts on the adjusting device for limiting the torque of the screwdriver, and the tool is no longer driven.
- FIGS. 1 to 28 The object of the invention will be explained in more detail below with reference to an exemplary embodiment illustrated in the drawings, FIGS. 1 to 28.
- Fig. 1 is a perspective view of a
- Fig. 2 is a plan view of the coupling for attaching the tool attachment.
- Fig. 3 is a side view and Fig. 4 is a plan view of the hydraulic tool from above.
- Fig. 5 is a sectional view taken along the
- Fig. 6 is a sectional view, based on which the drive of the pump piston to be explained in more detail.
- Fig. 7 is a sectional view in the region of
- Fig. 8 and Fig. 9 are sectional views with the aid of which the guidance of the hydraulic fluid during drawing and pressing is to be explained.
- Fig. 10 is a detail view of the pressure regulating valve.
- Fig. 11 shows the coupled with a cordless screwdriver hydraulic tool.
- Fig. 12 and Fig. 13 are hydraulic equivalent circuit diagrams, with respect to which two different embodiments of the invention will be explained in more detail.
- Fig. 12a is a sectional view taken along the line J-J of Fig. 3;
- FIGS. 14 to 17 show the hydraulic tool, which comprises a rivet hoop as a tool attachment.
- FIGS. 18 to 21 show the hydraulic tool with a pulling tool attachment, for example for setting
- FIGs. 23 and 24 show an embodiment of a tool with a pulling or pressing device, which is a
- Has torque arm which is connectable to the setting ring for the maximum torque of a cordless screwdriver.
- Fig. 25 shows the torque arm in a plan view and a sectional view.
- Fig. 26 to Fig. 28 show another embodiment of a tool according to the invention with a pull or
- Fig. 26 is a sectional view.
- FIGS. 27 and 28 are detail views of FIG. 26.
- Fig. 1 is a perspective view of a
- Hydraulic tool 1 according to the invention.
- the hydraulic tool 1 comprises a housing, which can be divided into three sections.
- the drive piston housing 2 includes in addition to the
- Drive piston a drive shaft 3, which is connectable to the lining of a screwdriver, in particular cordless screwdriver.
- the drive piston housing 2 comprises the coupling 6, to which a setting or pressing tool attachment can be connected.
- the hydraulic pump housing 4 Adjacent to the side, the drive piston housing merges into a hydraulic pump housing 4.
- the hydraulic pump housing 4 comprises a control member 7, by means of which it can be adjusted whether the hydraulic tool 1 pulls or presses.
- Pressure control valve installed in the hydraulic pump housing. About the coupled with the pressure control valve dial 107 of the maximum pressure with working space of the working piston and thus the maximum tensile or compressive force is adjustable.
- FIG. 2 is a plan view of the end face of FIG.
- control member 7 comprises the two opposing actuating elements 7a and 7b. It is a ram actuation for the control valve described below.
- the actuators 7a and 7b are connected to each other via a rod 9.
- control valve is actuated.
- FIG. 3 is a side view and FIG. 4 is a plan view of the top of the hydraulic tool 1.
- FIG. 5 is a sectional view taken along the line C-C of FIG. 4.
- the hydraulic tool 1 is cut centrally in this view along its main extension direction.
- the spring-loaded pump piston 15 is oscillated back and forth via an eccentric drive 14.
- the pump piston 15 is transverse, in particular perpendicular, to the drive shaft 3 and extends from the working piston housing 2, starting in the hydraulic pump housing 4th
- hydraulic fluid can be pumped into the working chamber 19 of the working piston 20 via the oscillating piston 15.
- control valve 18 which is connected to the actuating member (7 in FIG. 1), it is possible to set whether the hydraulic fluid flows into the working space 19 in front of or behind the working piston 20.
- the working piston 20 can be used both for driving a pulling tool and a pressing tool.
- the working piston 20 is connected via the piston rod 21 to the coupling 6.
- the hydraulic tool 1 further includes the reservoir 10 for hydraulic fluid, which serves as a buffer volume.
- the memory 10 is pressurized so that it is permanently under pressure.
- the piston 11 is provided in this embodiment, which is biased in the storage housing by means of the spring 12.
- the hydraulic tool comprises the pressure control valve 8, which from an adjustable conveyor side
- Pressure control valve simultaneously effective as a safety valve.
- FIG. 6 is a sectional view taken along line H-H of FIG. 5.
- This sectional view is executed transversely to the main extension direction of the hydraulic tool 1.
- Embodiment mounted in two ball bearings.
- Screwdriver moves when turning the drive shaft, the eccentric shaft 23 and so offset via the ball bearing 24, the pump piston 15 in an oscillating motion.
- the pumping piston 15 thus forms a hydraulic pump via the suction and pressure valve (16 and 17) shown in FIG.
- FIG. 7 is a sectional view taken along the line D-D of FIG. 3.
- FIG. 7 is a sectional view taken along the line D-D of FIG. 3.
- the control valve is actuated via the rod 9 connected to the control member 7.
- hydraulic fluid can be pumped into different channels via the control valve 18, which is designed as a 5/2-way valve. In one position, the control valve 18 is such
- Memory 10 is recharged for hydraulic fluid.
- Hydraulic fluid existing pressure.
- hydraulic fluid can be pumped via the channels 27 and 26 into the working space 19 in front of the working piston 20.
- the working piston 20 is actively reset via the hydraulic pump and can, for example, a
- Fig. 9 shows on the basis of a sectional view along FF of Fig. 4, as the control valve 18 in the Vorising of Working piston 20 by means of the hydraulic pump
- the actuating member (7 in Fig. 1) to be operated permanently to ensure a two-handed operation during pressing.
- the working piston 20 is moved forward upon actuation of the screwdriver by the hydraulic pump to
- FIG. 10 is a detail view of the area G of FIG. 5.
- FIG. 10 is a detail view of the area G of FIG. 5.
- the pressure control valve 8 is designed as a full-stroke safety valve, which after lifting the front needle-shaped valve body 29 abruptly due to the
- the valve body 29 is spring loaded and over the
- Adjusting member 38 which, driven by the adjusting wheel 107, the spring bias changes, is the opening pressure
- Fig. 11 shows how now the hydraulic tool 1 is coupled to a cordless screwdriver 32.
- the cordless screwdriver 32 includes a handle with the
- the drive shaft of the hydraulic tool 1 is in
- the user must first actuate the control element 7 or move to a position to the ancestor of the hydraulic system
- the device is ready for the next riveting or pressing process.
- Fig. 12 is the hydraulic equivalent circuit diagram according to a first embodiment of the invention.
- control valve 18 is designed such that it always remains in the position set by the user for advancing or retracting the working piston.
- control valve 18 is set such that the working piston 20 at
- the working piston 20 is formed as a differential piston due to the piston rod 21 connected to the working piston 20.
- the front piston surface is therefore smaller than the rear piston surface.
- Control valve 18 are placed in two switching states and remains, as stated above, even if the
- Hydraulic fluid by the hydraulic pump 35 which u.a. includes the suction and pressure valve, flow through. Alone due to the existing pressure in the memory 10 so hydraulic fluid flows from the memory 10 through the channel 49 and the channel 28 in the working space 19 behind the working piston 20th
- the working piston 20 is thereby set forward, even without the screwdriver is actuated. So can
- the workpiece to be approached with the tool attachment.
- Hydraulic pump 35 generates pressure and placed over the channel 28 of the working piston 20 by inflowing hydraulic fluid with such high force forward that, for example, a riveting or punching operation can be triggered.
- the user spends the control valve 18 in the other position in which now the channel 49 is connected via the control valve 18 to the channel 26.
- Control valve 18 always to reset in its position.
- the working piston 20 is reset. Behind the
- the pressure control valve 8 is adjustable by means of the dial 107.
- the maximum operating pressure and the resulting workforce can thus be preset.
- the dial 107 is coupled with a thread and allows a rotational movement of preferably more than 180 ° and less than 360 °, in this embodiment of about 340 °.
- the spring of the valve piston is biased more or less and the valve opens upon reaching a preset pressure. This is illustrated in the sectional view of FIG. 12a, which is a section along the line J-J of FIG. Within the Einstellrands 107th
- locking holes 108 in particular each 30 ° offset.
- a spring-loaded locking bolt slides over these locking holes 108 and gives the operator a recognizability of the locking positions and thus the
- adjustable pressure levels which can be additionally attached externally on the dial 107 as a label.
- the stop 109 limits the rotatability of the
- Pressure control valve 8 the conveyor side exiting
- Hydraulic fluid via the channel 30 back into the memory 10th flow and the hydraulic pump 35 is so quasi shorted.
- the pressure regulating valve 8 is designed as a full-stroke safety valve, the pressure present on the channel 49 is abruptly set to almost zero or up to the existing pressure in the memory 10 and a setting or pulling process is therefore stopped.
- FIG. 13 is the hydraulic equivalent circuit diagram of FIG.
- the channels 26 and 28 are different for this purpose with the
- the control valve 18 is formed in this embodiment such that it must be permanently actuated in order to be transferred from the state shown here to the other switching position. This is in this
- control valve 18 is biased by the spring 48.
- Working piston 20 so that it is reset, for example, to set a blind rivet.
- Control valve 18 against the bias of the spring 48 are pressed permanently in the other switching state.
- Hydraulic fluid through the channel 28 behind the working piston 20 promote.
- the working piston is set to perform a pressing operation.
- FIG. 14 is a side view of a hydraulic tool 1 (without screwdriver), wherein now the hydraulic tool 1 as a tool attachment comprises a rivet bracket 39.
- the rivet bracket 39 is used to process two-piece rivets or punch rivets and includes the from
- FIG. 15 is a perspective view of the hydraulic tool 1 shown in FIG. 14.
- FIG. 15 is a perspective view of the hydraulic tool 1 shown in FIG. 14.
- the handle 42 can not only serve to hold the hydraulic tool 1. Rather, the
- Handle 42 also serve as a torque arm. The user can thus the rivet bracket 39 against the torque of
- Rivet bracket 39 and housing of the hydraulic tool are in the connected state in this embodiment of the invention preferably in the coupled state
- FIG. 16 is a sectional view of the hydraulic tool 1 shown in FIGS. 14 and 15.
- the tool attachment in the form of the rivet strap 39 comprises a sleeve 51, which is connected to the working piston housing 2.
- the sleeve 51 can be screwed into the coupling 6.
- the rivet bracket 39 comprises an inner part 52, which the setting punch 40 with the piston rod 21 of the
- FIG. 17 shows a detail view of the region D of FIG. 16.
- the interior part 52 guided in the sleeve 51, into which the setting punch 40 is inserted, can be seen.
- Fig. 18 shows how the hydraulic tool 1 a
- Pulling tool attachment 43 which is provided for example for setting blind rivets comprises.
- the pulling tool attachment 43 also comprises a handle 42 extending transversely to its main extension direction.
- FIG. 19 is a side view of the hydraulic tool 1 shown in FIG. 18.
- FIG. 19 is a side view of the hydraulic tool 1 shown in FIG. 18.
- FIG. 20 is a sectional view taken along the line E-E of FIG. 19.
- FIG. 20 is a sectional view taken along the line E-E of FIG. 19.
- the cut thus extends through the handle 42.
- FIG. 21 is a sectional view of the hydraulic tool 1 shown in Figs. 18 and 19 taken along it
- the pulling tool attachment 43 comprises the sleeve 51, which is connected to the working piston housing 2.
- the working piston 20 is connected via the piston rod 21 to the pulling device 45.
- FIG. 22 is a detail view of the area D of FIG. 21.
- FIG. 22 is a detail view of the area D of FIG. 21.
- the pulling device 45 comprises the claws 46.
- Pulling device 45 in a known manner with the front sleeve 47 on the workpiece.
- FIG. 23 is a perspective view of a tool 100 with a pulling and / or pressing device, which can be coupled with a screwdriver, in this case with a cordless screwdriver 32.
- the tool 100 is in this embodiment according to the above-described
- Embodiments designed as a hydraulic tool can work in this embodiment of the invention but also according to another principle.
- the tool 100 comprises a housing 102 with a pulling and / or pressing device, which is connected via a drive shaft with the cordless screwdriver 32.
- the tool attachment 101 is configured in this embodiment as a rivet bracket and includes the handle 42. It is understood that the
- the tool 101 is performed
- the housing 102 of the tool 100 is over the
- Torque support 103 connected to the cordless screwdriver 32.
- the torque arm 103 engages the storage case 5 for hydraulic fluid.
- the torque support 103 engages the adjusting ring 104 for limiting the torque of the cordless screwdriver 32.
- the housing 102 is held by the tool attachment 101, which is rotatably connected to the housing 102.
- the torque between the tool attachment 101 and housing 102, from which a rotation between these two components takes place, can be adjusted for example by sealing elements, such as O-rings.
- FIG. 25 shows the torque arm 103 in a plan view and in a sectional view lying next to it.
- the torque arm 103 via the clamping screw 105 with both the housing of the Tool (102 in Fig. 23/24) and with the adjustment ring (104) of the cordless screwdriver (32).
- the coupling ring 106 for the adjusting ring is preferably adjustable to adapt to different cordless screwdriver in its diameter and / or at least
- Figs. 26 to 28 are views of another one
- Fig. 26 is a sectional view of the tool 100 with a pulling or pressing device.
- a housing 102 with a hydraulic pump is connected via a drive shaft 3 with a cordless screwdriver 32.
- Embodiments engages the torque arm 103 via an arm 101 which is connected to the housing 102, to the foot 54 of the cordless screwdriver 32.
- the torque support 103 is which
- Fig. 27 is a detail view of the area H of Fig. 26, showing the structure of the hydraulic pump.
- the hydraulic pump does not include a control valve, via which the working piston can be both forward and backward, but only one
- Embodiment designed as a 2/2-way valve.
- Pressure valve 114 hydraulic fluid from the memory 10 via the channel 115 in the working space 19 of the train or
- an actuator 112 which may be formed for example as a lever
- a spring-loaded ball opens the relief valve 111 and hydraulic fluid can flow back through the channel 115 through the relief valve 111 and the channel 116 in the memory 10.
- the pressure required for this purpose is provided by a spring 12, which resets the working piston of the pulling or pressing device.
- Fig. 28 is a detail view of portion I of Fig. 26 showing the coupling between the wrench and the remainder of the hydraulic tool.
- the elastic coupling 117 is integrated in the housing and consists of a clutch bell 19, the at least one ring 118 made of elastic material with the
- connection is made via pins 119.
- the drive shaft is provided with a Futterarret réelle 120, over which the lining of the (hidden) cordless screwdriver can be set to prevent this dissolves due to vibration.
- the Futterarret réelle 120 includes a bell 121, which also serves as a flywheel for the drive shaft 3.
- a union nut 124 is arranged, via which the Futterarret ist 120 can be tightened.
- the Futterarret ist 120 includes a deformable ring 122, which is for example slotted and can be reduced by tightening the nut 124 in its diameter by being pressed against an inclined surface.
- the deformable ring 122 is in this case
- Embodiment over a pin 125 against the bell 121 against rotation.
- the drive shaft 3 may include positive locking elements (not shown), which engage in the chuck of the cordless screwdriver.
- positive locking elements not shown
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017130840 | 2017-12-21 | ||
PCT/EP2018/086404 WO2019122243A1 (de) | 2017-12-21 | 2018-12-20 | Hydraulikwerkzeug für eine zug- und/oder pressvorrichtung |
Publications (2)
Publication Number | Publication Date |
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EP3731997A1 true EP3731997A1 (de) | 2020-11-04 |
EP3731997B1 EP3731997B1 (de) | 2024-06-26 |
Family
ID=65003375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18830478.6A Active EP3731997B1 (de) | 2017-12-21 | 2018-12-20 | Hydraulikwerkzeug für eine zug- und/oder pressvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US11673249B2 (de) |
EP (1) | EP3731997B1 (de) |
DE (1) | DE112018006550A5 (de) |
WO (1) | WO2019122243A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11673249B2 (en) * | 2017-12-21 | 2023-06-13 | WS Wieländer + Schill Professionelle Karosserie-Spezialwerkzeuge GmbH & Co. KG | Hydraulic tool for a pulling and/or pressing device |
US11110580B2 (en) * | 2018-03-22 | 2021-09-07 | James Kevin Panks | Pneumatic percussive tool with attachments and method of use thereof |
NL2021527B1 (en) * | 2018-08-30 | 2020-04-24 | Holmatro B V | Tool having a pump and a motor on a common axis |
CN111546281B (zh) * | 2020-05-12 | 2021-08-27 | 三一重机有限公司 | 一种挖掘机主泵拆装装置 |
EP4363168A1 (de) * | 2021-06-29 | 2024-05-08 | Enerpac Tool Group Corp. | Hydraulischer drehmomentschlüssel |
CN115488362B (zh) * | 2022-10-25 | 2024-11-08 | 安庆帝伯粉末冶金有限公司 | 用于气门座圈车削的移转上料装置 |
CN117000848B (zh) * | 2023-08-28 | 2024-07-05 | 苏州丹卡精密机械有限公司 | 一种具有缓冲防护功能的冲压模具 |
CN117548535B (zh) * | 2024-01-09 | 2024-03-29 | 四川众信通用电力有限公司 | 一种电气柜生产用板材弯折设备 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US1244160A (en) * | 1916-01-07 | 1917-10-23 | Charles A Anderson | Engine or pump construction. |
EP0116165A1 (de) * | 1983-01-13 | 1984-08-22 | Franz Orlita | Kolbenpumpe mit rotierendem Kolben |
US5492457A (en) * | 1994-06-21 | 1996-02-20 | Lee; W. Ken | Unidirectional flow pump with rotary drive |
US5601421A (en) * | 1996-02-26 | 1997-02-11 | Lee; W. Ken | Valveless double acting positive displacement fluid transfer device |
ZA992307B (en) * | 1998-03-26 | 1999-10-01 | Lloyd V Gouge | Cordless, high torque power tool. |
DE19826110A1 (de) * | 1998-06-12 | 1999-12-23 | Siegfried Leverberg | Elektrohydraulische Vorrichtung zum Verpressen von Rohrverbindungen |
DE20017118U1 (de) * | 2000-10-04 | 2001-03-22 | Felsberg, Jürgen, 42697 Solingen | Vorrichtung zum radialen Verpressen von Rohrverbindungen, insbesondere von Fittings |
JP4974643B2 (ja) * | 2006-10-30 | 2012-07-11 | 前田金属工業株式会社 | ボルト・ナット締付装置 |
DE102007036328A1 (de) * | 2007-07-31 | 2009-02-05 | Lösomat Schraubtechnik Neef Gmbh | Mobiles Kraftschrauber-Bediengerät |
US9517363B1 (en) * | 2009-05-27 | 2016-12-13 | Madeleine Ambron Newman | Powered hand-held forcible entry device |
DE202009015515U1 (de) * | 2009-11-17 | 2011-04-07 | Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft | Handgeführtes Pressgerät |
DE102011111533B4 (de) | 2011-08-31 | 2020-06-25 | WS Wieländer + Schill Engineering GmbH & Co. KG | Druckerzeuger für eine Zug- oder Pressvorrichtung sowie Zug- oder Pressvorrichtung |
DE102012017271B3 (de) * | 2012-08-31 | 2014-04-03 | Db Bahnbaugruppe Gmbh | Vorrichtung zum Ein- und Ausschrauben von Bolzen und Schrauben mittels eines motorisch angetriebenen Schraubwerkzeuges |
DE102014107752A1 (de) | 2014-06-03 | 2015-12-03 | Rehau Ag + Co | Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres oder eines Metall-Kunststoff-Verbundrohres an einen Fitting mit einer Schiebe- oder Presshülse |
EP3237869B1 (de) * | 2014-12-23 | 2018-10-24 | SCS Concept Italia SRL | Prüfstand für schraubendreher |
WO2016198973A1 (en) | 2015-06-09 | 2016-12-15 | Cembre S.P.A | Portable work equipment for traveling use |
IT201600076117A1 (it) * | 2016-07-20 | 2018-01-20 | Atlas Copco Blm Srl | Sistema per controllare il corretto funzionamento di avvitatori industriali. |
US11673249B2 (en) * | 2017-12-21 | 2023-06-13 | WS Wieländer + Schill Professionelle Karosserie-Spezialwerkzeuge GmbH & Co. KG | Hydraulic tool for a pulling and/or pressing device |
-
2018
- 2018-12-20 US US16/955,831 patent/US11673249B2/en active Active
- 2018-12-20 EP EP18830478.6A patent/EP3731997B1/de active Active
- 2018-12-20 WO PCT/EP2018/086404 patent/WO2019122243A1/de unknown
- 2018-12-20 DE DE112018006550.2T patent/DE112018006550A5/de active Pending
Also Published As
Publication number | Publication date |
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WO2019122243A1 (de) | 2019-06-27 |
US20200316765A1 (en) | 2020-10-08 |
WO2019122243A4 (de) | 2019-08-15 |
DE112018006550A5 (de) | 2020-09-03 |
US11673249B2 (en) | 2023-06-13 |
EP3731997B1 (de) | 2024-06-26 |
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