CN218051516U - Single-drive multi-spindle CNC (computer numerical control) machine tool capable of automatically changing tools - Google Patents
Single-drive multi-spindle CNC (computer numerical control) machine tool capable of automatically changing tools Download PDFInfo
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- CN218051516U CN218051516U CN202221524643.2U CN202221524643U CN218051516U CN 218051516 U CN218051516 U CN 218051516U CN 202221524643 U CN202221524643 U CN 202221524643U CN 218051516 U CN218051516 U CN 218051516U
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Abstract
A single-drive multi-spindle CNC (computer numerical control) machine tool capable of automatically changing tools comprises a rack, wherein the rack is provided with a processing table board, a tool magazine and a processing part, the processing part comprises a spindle fixing seat, more than two spindles are vertically arranged on the spindle fixing seat, the spindle fixing seat is driven by a Z-direction driving mechanism, a tool grabbing structure used for grabbing tools is respectively arranged in each spindle, the reference surface of each spindle is in the same horizontal plane, a plurality of tools are stored in the tool magazine, each tool is provided with a tool and a positioning clamp, the positioning clamps are coaxially positioned on tool shanks of the tools, and the distances from the positioning surface of each positioning clamp of the tools to the processing surface of the tool are equal; after the cutter grabbing structure grabs the cutter, the positioning surface of the positioning clamp is tightly attached to the reference surface of the main shaft. The utility model discloses can realize the automatic tool changing function of single-drive many main shafts CNC digit control machine tool.
Description
Technical Field
The utility model relates to a but many main shafts of single-drive CNC digit control machine tool of automatic tool changing.
Background
A computer numerical control machine (also called CNC numerical control machine) is an automatic machine equipped with a program control system. The control system is capable of logically processing a program defined by a control code or other symbolic instructions and decoding the program to operate the machine tool to machine a part.
The CNC numerical control machine tool can be divided into a single-shaft CNC numerical control machine tool and a multi-shaft CNC numerical control machine tool according to the number of main shafts of the CNC numerical control machine tool. The multi-axis CNC numerical control machine tool is characterized in that more than two main shafts are arranged on one machine tool, more than two workpieces can be machined simultaneously, and the multi-axis CNC numerical control machine tool has the advantage of high production efficiency compared with a single-axis CNC numerical control machine tool. The multi-axis CNC numerical control machine tool is divided into two major categories, namely a single-drive multi-spindle CNC numerical control machine tool and a multi-drive multi-spindle CNC numerical control machine tool according to the number of driving devices of the multi-spindle CNC numerical control machine tool. The single-drive multi-spindle CNC numerical control machine tool is provided with a Z-direction drive device, and a plurality of spindles are arranged on the same spindle connecting seat and are driven by the Z-direction drive device synchronously; the multi-drive multi-spindle CNC numerical control machine tool is characterized in that a plurality of Z-direction driving devices respectively drive a plurality of spindles to move along the Z direction, and each spindle is provided with an independent spindle connecting seat.
In the prior art, because each main shaft of the multi-drive multi-main-shaft CNC numerical control machine tool is controlled independently, the multi-drive multi-main-shaft CNC numerical control machine tool can realize automatic tool changing; however, for the single-drive multi-spindle CNC numerical control machine tool, because a Z-direction driving device is adopted, when a plurality of spindles on the same spindle connecting seat are driven to synchronously move along the Z direction, if an automatic cutter grabbing device is adopted, the grabbed cutters cannot ensure that the cutter processing surfaces of all the cutters on the spindles are in the same plane, and all the cutters on the spindles cannot be subjected to cutter setting by using a cutter setting tool, only manual cutter changing can be adopted, and the problems of low cutter changing speed and poor cutter changing precision exist. Currently, single-drive multi-spindle CNC machines also have a considerable market share in the market. How to enable the single-drive multi-spindle CNC numerical control machine tool to have the function of automatically changing the tool is a problem to be urgently solved by technical personnel in the same industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a but single drive many main shafts of realizing automatic tool changing function CNC digit control machine tool of automatic tool changing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an automatic tool changing method of single-drive many main shafts CNC digit control machine tool, be suitable for the lathe and have many main shafts, many main shafts set up on same main shaft mount pad to by a Z to actuating mechanism drive main shaft mount pad reciprocate, and every main shaft all has solitary sword structure of grabbing respectively, the reference surface of every main shaft lower extreme is in same horizontal plane, include the following step:
s1, sending a tool changing instruction;
s2, detecting whether a cutter exists on each spindle by a sensor, if so, entering the step S3, and if not, entering the step S4;
s3, performing a cutter returning action;
s4, performing knife grabbing action and grabbing the knife according to the following steps;
s5, moving all the main shafts above the tool holder seat, aligning all the main shafts to respective tools which are pre-installed in the tool holder seat, wherein each tool is provided with a tool and a positioning clamp, the positioning clamp is coaxially positioned and arranged on a tool shank of the tool, and the distance from a positioning surface of the positioning clamp of each tool to a tool machining surface is equal;
s6, the Z-direction driving mechanism drives all the main shafts to move downwards, so that the reference surfaces of all the main shafts are in contact with the positioning surfaces of the positioning clamps of corresponding tools, meanwhile, the driving rod moves downwards under the action of a main shaft cylinder arranged in each main shaft, the locking mouth arranged at the lower end of the driving rod is opened, the upper parts of the tools extend into the locking mouth, main shaft disc springs arranged at the upper parts of the driving rods are compressed, each tool holder seat elastic body in each tool holder seat is compressed under the action of the downward force of the corresponding tool, and the reference surfaces of the main shafts are in close contact with the positioning surfaces of the positioning clamps under the action of the reaction force of the tool holder seat elastic bodies;
s7, releasing pressure by a spindle cylinder, extending a spindle disc spring to drive a driving rod to ascend, ascending a lock nozzle along with the driving rod, contracting the lock nozzle to clamp the upper part of a cutter, and keeping a reference surface of a spindle in close contact with a positioning surface of a positioning clamp;
and S8, driving all the main shafts and the grabbed tools to ascend synchronously by the Z-direction driving device, and finishing tool changing.
As an improvement, the utility model discloses still include S9 step, repeated S2-S8 step to realize the circulation tool changing function in the course of working.
As an improvement of the present invention, the step S3 includes the following steps:
s31, moving all the main shafts above the tool holder seats to enable each main shaft to be aligned to the vacant position of the corresponding tool holder seat;
s32, the Z-direction driving mechanism drives all the main shafts to move downwards, the cutter on the main shafts moves downwards to a set position, the cutter holder seats clamp the positioning clamps on the cutter, and all the main shafts stop moving downwards; inflating a main shaft cylinder in each main shaft, pressing down a belleville spring, moving down the driving rod, opening a lock nozzle, and loosening the upper part of the cutter by the lock nozzle;
and S33, moving all the main shafts upwards, and separating all the main shafts from the respective cutters to finish cutter returning.
As right the utility model discloses an improvement, S5 step still includes the cutter equipment step:
s51, placing the cutter and the positioning clamp in a special jig, wherein the cutter handle penetrates through a central hole of the positioning clamp, so that a positioning surface of the positioning clamp is tightly attached to an upper positioning surface of the special jig, a cutter processing surface of the cutter abuts against a lower positioning surface of the special jig, and the distances between the positioning surfaces of the positioning clamps of all the cutters and the cutter processing surface are guaranteed to be the same fixed value;
and S52, fixing the positioning clamp on the cutter handle to form the cutter.
The utility model also provides a but CNC digit control machine tool of single-drive multi-spindle automatic tool changing can carry out the tool changing with foretell automatic tool changing method.
The utility model also provides a but many main shafts of single-drive CNC digit control machine tool of automatic tool changing, including the frame is equipped with processing mesa, tool magazine and processing portion, processing portion includes the main shaft fixing base, be equipped with more than two main shafts on the main shaft fixing base perpendicularly, the main shaft fixing base is driven by Z to actuating mechanism, is equipped with respectively in every main shaft and is used for snatching the sword structure of grabbing of cutter, the reference surface of every main shaft is in the same horizontal plane, has a plurality of cutters in the tool magazine, every cutter has sword and locating clip, the locating clip is set up on the handle of a knife by coaxial location, and the locating surface of the locating clip of every cutter equals to the distance of cutter machined surface; after the cutter grabbing structure grabs the cutter, the positioning surface of the positioning clamp is tightly attached to the reference surface of the main shaft.
As right the utility model discloses an it is right to improve, grab the sword structure including establishing the main shaft cylinder in the main shaft, with the actuating lever that the output shaft of main shaft cylinder is connected the upper end of actuating lever is equipped with receives output shaft driven disc spring the lower extreme of actuating lever is equipped with the lock mouth.
As right the utility model discloses an improvement, the tool magazine is equipped with a plurality of tool holder seat, and every tool holder seat has the clamping part that is used for embracing the locating clip of cutter, and is located the tool holder seat elastomer that is used for upwards supporting the cutter below the clamping part.
As an improvement of the utility model, the more than two main shafts are 2-24 main shafts.
As an improvement, the positioning clamp is coaxially fixed and arranged on the handle of the knife through a fastener or a thermal shrinkage mode.
The core of the utility model lies in that all the cutters are designed to comprise two parts of a positioning clamp and a cutter, the positioning clamp is positioned on the handle of the cutter, the distance between the positioning surface of the positioning clamp of all the cutters and the machining surface of the cutter is equal, the cutter is placed on the cutter holder of the tool magazine, and the cutter is pushed up by the elastomer of the cutter holder in the cutter holder; the datum planes of the main shafts are arranged in the same horizontal plane, when the main shafts grab the cutters, the datum planes of the main shafts are tightly attached to the positioning surfaces of the positioning clamps, so that the cutter processing surfaces of all the cutters are at the same height in the Z direction, the function of simultaneously and automatically changing the cutters of more than two main shafts on the same main shaft fixing seat can be realized, and the cutter setting step is saved, wherein the cutter setting refers to the Z-direction height calibration of a new cutter after cutter changing.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of the method of the present invention.
Fig. 2 is a detailed structural diagram of step S3 in fig. 1.
Fig. 3 is a detailed structural diagram of step S5 in fig. 1.
Fig. 4 is a schematic structural diagram of the knife of the present invention.
Fig. 5 is a schematic structural view in tool changing of the present invention.
Fig. 6 is a schematic diagram of the tool changing completion structure of the present invention.
Fig. 7 is a schematic structural view of the main shaft moving upwards after the tool changing of the utility model is completed.
Fig. 8 is a schematic plan view of the machine tool of the present invention.
Fig. 9 is a schematic view of the spindle assembly structure of fig. 8.
Fig. 10 is a schematic structural diagram of a cutter according to the present invention.
Fig. 11 is a structural view of another embodiment of the holder of the present invention.
Fig. 12 is a schematic top view of the structure of fig. 11.
Fig. 13 is a schematic view of the structure of fig. 11 when used for knife return.
Fig. 14 is a schematic view of the structure of fig. 11 when used for grasping a knife.
Fig. 15 is a schematic plan view of an embodiment of the positioning clip of the present invention.
Fig. 16 is a top plan view of the structure of fig. 15.
Fig. 17 is a perspective view of fig. 15.
Fig. 18 is a schematic top view of the positioning protection sleeve of the present invention.
Fig. 19 is a perspective view of fig. 18.
Fig. 20 is a schematic plan view of the positioning protective sleeve after being sleeved on the positioning clip.
Fig. 21 is a top plan view of the structure of fig. 20.
FIG. 22 isbase:Sub>A schematic sectional view A-A of FIG. 21.
In the figure:
a frame 1;
a horizontal calibration gauge 11;
processing the table top 2;
a tool magazine 3;
a holder seat 31;
a clamping portion 311;
a holder base elastic body 312;
a processing section 4;
a spindle holder 41;
a main shaft 411;
a reference surface 4111;
a spindle fixing clamp 4112;
a fastening screw 4113;
a Z-direction drive mechanism 412;
a cutter 413;
a knife 4131;
tool machined face 41311
A knife handle 41312;
a positioning clip 4132;
a positioning face 41321;
a clamped portion 41322;
a screw 41323;
the positioning clamp upper barrel 41324;
an upper barrel face 413241;
locating clip middle hole 413242
A positioning clamp lower barrel 41325;
a lower barrel face 413251;
an upper barrel opening groove 41326;
a lower barrel open slot 41327;
locating clip central aperture 41328;
a grasping blade structure 414;
a spindle cylinder 4141;
an output shaft 4142;
a drive lever 4143;
a belleville spring 4144;
the lock nozzle 4145.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-3, fig. 1-3 disclose an automatic tool changing method for a single-drive multi-spindle CNC numerical control machine, which is suitable for a machine tool having a plurality of spindles, the plurality of spindles are disposed on a same spindle mounting seat, and the spindle mounting seat is driven by a Z-direction driving mechanism to move up and down, and each spindle has a separate tool catching structure, and the reference surface of the lower end of each spindle is in a same horizontal plane, comprising the following steps:
s1, sending a tool changing instruction by a numerical control device of a machine tool;
s2, detecting whether a cutter exists on each main shaft by a sensor on the machine tool, if so, entering the step S3, and if not, entering the step S4; in this embodiment, the sensor is an infrared sensor, the infrared sensor includes an infrared transmitting tube and an infrared receiving tube, the infrared transmitting tube and the infrared receiving tube are arranged oppositely, when the infrared rays transmitted by the infrared transmitting tube can be received by the infrared receiving tube, it indicates that no tool is located at the lower end of the spindle, otherwise, it indicates that a tool is located at the lower end of the spindle; of course, the sensor may also use magnetic induction switches or the like;
s3, performing a cutter returning action; with reference to figures 2 and 4 of the drawings,
s31, moving all the main shafts above the tool holder seats by matching a main shaft X-direction moving mechanism (not shown) with a Y-direction moving mechanism (not shown) of the tool magazine (namely, a main shaft fixing seat is driven by a Z-direction driving mechanism to move up and down and is fixed on the X-axis fixing seat to move horizontally), and enabling each main shaft to be aligned with a vacant position of the corresponding tool holder seat;
s32, the Z-direction driving mechanism drives all the main shafts to move downwards, the cutter on the main shafts moves downwards to a set position, and the cutter holder seat is enabled to hold a positioning clamp on the cutter (specifically, the lower part of the positioning clamp is provided with a clamped part, see figure 10; the upper part of the cutter holder seat is provided with a clamping part which is provided with a certain elastic holding head, after the clamped part extends to the holding clamp, the holding clamp uses the elasticity to hold the clamped part, and of course, the clamping part can be designed to directly clamp a cutter handle, or clamp the outer edge of a positioning sleeve, or magnetically attract and the like according to needs), and all the main shafts stop moving downwards; inflating a spindle cylinder in each spindle, pressing a belleville spring down, moving the driving rod down, opening a locking nozzle, and loosening the upper part of the cutter by using the locking nozzle; in this embodiment, the clamping portion may be an elastic clamping portion, a pneumatic clamping portion, an electric clamping portion, or a magnetic clamping portion (the same below).
And S33, moving all the main shafts upwards, and separating all the main shafts from the respective cutters to finish cutter returning.
S4, performing knife grabbing action, and grabbing the knife according to the following steps, as shown in the figures 5-7;
s5, moving all the main shafts above a tool holder seat through the matching of a main shaft X-direction moving mechanism (not shown) and a Y-direction moving mechanism (not shown) of a tool magazine, wherein all the main shafts are aligned to respective tools which are pre-installed in the tool holder seat, each tool is provided with a tool and a positioning clamp, the positioning clamps are coaxially positioned and arranged on a tool shank of the tool, and the distances from a positioning surface of each positioning clamp of each tool on the tool holder seat to a tool machining surface are equal;
s6, the Z-direction driving mechanism drives all the main shafts to move downwards, so that the reference surfaces of all the main shafts are in contact with the positioning surfaces of the positioning clamps of the corresponding tools, meanwhile, a main shaft cylinder arranged in each main shaft is inflated to enable a driving rod to move downwards, a lock nozzle arranged at the lower end of the driving rod is opened, the upper portions of the tools extend into the lock nozzle, a main shaft disc spring arranged at the upper portion of the driving rod is compressed, each tool holder seat elastic body in each tool holder seat is compressed under the action of the downward force of the corresponding tool, and the reference surfaces of the main shafts are in close contact with the positioning surfaces of the positioning clamps under the action of the reaction force of the tool holder seat elastic bodies; in this embodiment, the elastic body of the holder seat may be a spring of the holder seat, an elastic rubber of the holder seat, or an elastic air cushion of the holder seat (the same applies below).
S7, releasing pressure by a spindle cylinder, extending a spindle disc spring to drive a driving rod to ascend, ascending a lock nozzle along with the driving rod, contracting the lock nozzle to clamp the upper part of a cutter, and keeping a reference surface of a spindle in close contact with a positioning surface of a positioning clamp;
and S8, driving all the main shafts and the grabbed tools to ascend synchronously by the Z-direction driving device, and finishing tool changing.
The core of the utility model is that a plurality of spindles are fixed on the same spindle fixing seat, and because the position precision of each spindle of the spindle fixing seat is within 0.005mm, each spindle is within X after assembly, and the position size precision of Z direction is within 0.005 mm;
in order to realize that a plurality of main shafts are driven by single servo in the Z direction and can be synchronously and automatically changed, and simultaneously ensure that the precision requirement of synchronous tool changing is within 0.005mm, a tool with fixed length and capable of limiting is adopted; the reference surface of the main shaft is in close contact with the positioning surface of the positioning clamp, so that automatic tool changing can be realized, and the precision can be ensured.
Preferably, the utility model discloses still include S9 step, repeat S2-S8 step to realize the circulation tool changing function in the course of working.
Preferably, the step S5 further includes a cutter assembling step: see fig. 3;
s51, placing the cutter and the positioning clamp in a special jig, wherein the cutter handle penetrates through a central hole of the positioning clamp, so that a positioning surface of the positioning clamp is tightly attached to an upper positioning surface of the special jig, a cutter processing surface of the cutter abuts against a lower positioning surface of the special jig, and the distances between the positioning surfaces of the positioning clamps of all the cutters and the cutter processing surface are guaranteed to be the same fixed value;
and S52, fixing the positioning clamp on the cutter handle to form the cutter.
The utility model discloses in, the cutter can be in the extraengine pre-assembly:
the special jig is used outside the machine table to realize the assembly of the positioning clamps and the cutters, and the distances between the positioning surfaces of the positioning clamps of all the cutters and the cutter processing surfaces of the cutters are ensured to be the same preset fixed value, and the distance is preferably within 0.005 mm;
as shown in fig. 10, the tool is configured by providing a first reference surface F and a second reference surface G in the special jig, attaching the positioning surface of the positioning holder to the first reference surface F, attaching the tool machining surface of the tool to the second reference surface G, and fixing the positioning holder to the tool.
The retention clip and blade are secured by means including, but not limited to, mechanical means such as locking with screws 41323, or heat shrinking means.
If the mode of thermal shrinkage is used for realizing the close fit of the cutter and the positioning clamp, the positioning clamp is heated by a high-frequency heater firstly, the inner diameter of the positioning clamp matched with the cutter handle is enlarged, the cutter handle can smoothly penetrate into the positioning clamp, the cutter processing surface is tightly attached to a special jig and a second reference surface G, the positioning surface of the positioning clamp is tightly attached to a first reference surface F, the positioning clamp is cooled, the inner diameter of the positioning clamp is shrunk, and the positioning clamp tightly holds the cutter handle.
The utility model also provides a but single drive many main shafts automatic tool changing's CNC digit control machine tool can carry out the tool changing with foretell automatic tool changing method.
Referring to fig. 8-10, fig. 8-10 disclose a CNC machine tool with single-drive multi-spindle automatic tool changing function, which includes a frame 1, a processing table 2 is disposed on the frame 1, a tool magazine 3 capable of extending and retracting along the Y direction is disposed above the processing table 2, a processing portion 4 is disposed above the tool magazine 3, the processing portion 4 includes a spindle fixing base 41, two or more spindles 411 are vertically disposed on the spindle fixing base 41 (in this embodiment, the number of the spindles 411 is 4, and may be selected from 2 to 24 according to the number of the spindles 411 required), all spindle fixing bases 41 are driven by a Z-direction driving mechanism 412 (in this embodiment, the Z-direction driving mechanism 412 includes a servo motor and a corresponding screw nut structure thereof, the Z-direction driving mechanism 412 drives the spindle fixing base 41 to move up and down, the spindle fixing base 41 thereby drives the spindle 411, and at the same time, the spindle fixing base 41 is fixed on an X-axis fixing base (not shown) and may move horizontally, a tool grasping structure for grasping a tool 413 is disposed in each spindle 411, and each spindle has a tool holder 411, 4132 is disposed in the same plane, and a distance from the same as a tool holder 4132 is equal to the tool holder 4132, and each tool holder 4132 is disposed in the same plane, and the tool holder 4132 is disposed in the same plane 4132, and the tool holder 4132 is disposed in the plane, and the tool holder 4132 is disposed in the same plane, and the tool holder 4132 is disposed in the plane for holding tool holder 4132, and is disposed in the plane for holding tool holder 4132; after the tool grabbing structure grabs the tool 413, the positioning surface 41321 of the positioning clamp 4132 is tightly attached to the reference surface 4111 of the spindle 411.
The cutter can be assembled outside the machine in advance, the positioning clamp and the cutter can be assembled by using a special jig outside the machine, and the distance between the positioning face 41321 of the positioning clamp 4132 of all the cutters 413 and the cutter processing face 41311 of the cutter is ensured to be the same preset fixed value, and the distance is preferably within 0.005 mm.
Preferably, the knife catching structure 414 (see fig. 4-7) includes a spindle cylinder 4141 disposed in the spindle 411, a driving rod 4143 connected to an output shaft 4142 of the spindle cylinder 4141, a belleville spring 4144 driven by the output shaft 4142 disposed at an upper end of the driving rod 4143, and a locking nozzle 4145 disposed at a lower end of the driving rod 4143.
Preferably, the tool magazine 3 is provided with a plurality of tool holder seats 31, each tool holder seat 31 has a clamping portion 311 for holding a positioning clamp 4132 of the tool 413, and a tool holder seat elastic body 312 located below the clamping portion 311 for pressing the tool 413 upward.
Referring to fig. 2, the spindle 411 and the spindle holder 41 of the present invention are assembled as follows.
A plurality of main shafts 411 are preassembled at corresponding positions of the main shaft fixing seat 41, the main shafts 411 are hung by screws and are not locked, so that the main shafts 411 can float up and down, and the height is convenient to adjust;
placing a horizontal calibration gauge 11 on the machining table top 2 of the machine table, and enabling the horizontal calibration gauge 11 to be positioned under all the main shafts 411;
the Z-direction driving mechanism 412 drives the spindle fixing base 41 to move downwards, so that the reference surface 4111 of each spindle 411 is completely contacted with the upper plane of the horizontal calibration gauge 11;
the fastening screw 4113 between the spindle 411 and the spindle fixing clip 4112 is locked.
Referring to fig. 11, in the present invention, the toolholder seat 31 includes a clamping portion 311 for holding a positioning clip 4132 of a tool 413 and a toolholder seat elastic body 312 for supporting the tool 413 upward, in this embodiment, the clamping portion 311 includes a horizontal clamping surface (3111) and a sliding member (3112) connected perpendicular to the horizontal clamping surface (3111), the horizontal clamping surface (3111) and the sliding member (3112) form an L-shape, an elastic bayonet 3113 (see fig. 12) is disposed on a side of the horizontal clamping surface (3111) away from the sliding member (3112), and the elastic bayonet 3113 is used for carrying the tool 413.
When the knife is to be returned, as shown in fig. 13, the spindle moves the knife 413 to the vicinity of the clamping portion 311, so that the clamped portion 41322 of the knife 413 is aligned with the elastic bayonet 3113, and the knife 413 laterally clamps the clamped portion 41322 in the elastic bayonet 3113 in the direction of the first arrow 415, thereby completing the returning.
When the tool is to be grasped, as shown in fig. 14, the lock nozzle 4145 of the spindle engages the tool shank at the upper part of the positioning clamp, the spindle descends slightly, the positioning surface 41321 of the positioning clamp 4132 is tightly attached to the reference surface 4111 of the spindle 411, the lock nozzle 4145 locks the tool shank at the upper part of the positioning clamp, and the spindle is translated to take out the tool 413 from the side in the direction of the second arrow 416, so that the tool grasping is completed.
The assembly ensures the synchronism of the multiple main shafts 411 in the x-y-z three dimensions, the consistency of the three-dimensional dimension of each main shaft 411 can be ensured no matter a new cutter is installed or the cutter is automatically changed in the machining process, the cutter can be changed without cutter adjustment, and the problems of large human error and long cutter changing time caused by the fact that the cutter of a traditional machine needs to be adjusted every time when the cutter is changed are solved.
In the Z direction, a servo motor system drives the plurality of spindles 411 to move simultaneously, so that the asynchronous phenomenon caused by the up-and-down motion of the spindles of the systems of the traditional machine is completely avoided, the complexity of the equipment is greatly simplified, and the stability of the equipment is improved.
Referring to fig. 15-17, fig. 15-17 illustrate another positioning clip of the present invention. As can be seen, the positioning clamp 4132 comprises an upper positioning clamp barrel 41324 and a lower positioning clamp barrel 41325, the upper positioning clamp barrel 41324 and the lower positioning clamp barrel 41325 are coaxially arranged up and down, wherein the outer diameter of the lower positioning clamp barrel 41325 is larger than that of the upper positioning clamp barrel 41324, and a positioning surface 41321 is formed at the intersection of the upper positioning clamp barrel 41324 and the lower positioning clamp barrel 41325; the centers of the positioning clamp upper barrel 41324 and the positioning clamp lower barrel 41325 are provided with positioning clamp middle holes 41328 which penetrate through the positioning clamp upper barrel 41324 and the positioning clamp lower barrel 41325, and the barrel walls of the positioning clamp upper barrel 41324 and the positioning clamp lower barrel 41325 are alternately provided with at least two upper barrel opening grooves 41326 and at least two lower barrel opening grooves 41327; the upper barrel opening groove 41326 extends from the upper barrel surface 413241 of the positioning clamp upper barrel 41324 to the vicinity of the lower barrel surface 413251 of the positioning clamp lower barrel 41325, and divides the positioning clamp upper barrel 41324 and the positioning clamp lower barrel 41325 into at least three upper elastic sheets; the lower tube opening groove 41327 extends from the lower tube face 413251 of the clip lower tube 41325 to the vicinity of the upper tube face 413241 of the clip upper tube 41324, dividing the clip lower tube 41325 and the clip upper tube 41324 into a plurality of lower resilient tabs.
An inverted matching hole 413242 is arranged on the positioning clamp upper barrel 41324 near the positioning surface 41321 and is used for matching with a positioning protective sleeve 4133 on the spindle.
Referring to fig. 18-22, the present invention further includes a positioning protection sleeve 4133, the positioning protection sleeve 4133 includes a bottom plate 41331, the bottom plate 41331 extends to one side along a circumference thereof to form a cylinder 41332, a central hole 41333 is provided in the center of the bottom plate 41331, the diameter of the central hole 41333 is equal to the outer diameter of the positioning clamp upper cylinder 41324, at least two lugs 41334 protruding into the central hole 41333 are uniformly provided on the inner wall of the central hole 41333 (in the present embodiment, three lugs 41334 are provided, and of course, the structure may be designed to be larger than three lugs 41334), and an arc-shaped groove 41335 with one end communicating with the central hole 41333 is respectively provided with respect to the lugs 41334 to form an elastic arm 41336; the positioning protective sleeve 4133 is sleeved on the positioning clamp upper barrel 41324, and the lugs 41334 are clamped in the back-off matching holes 413242, so that the positioning protective sleeve and the positioning clamp upper barrel are fixedly connected.
When the lugs 41334 are caught in the back-engagement holes 413242, the positioning surface 41321 may be the inner surface 413311 of the bottom plate 41331 or the upper surface 413312 of the cylinder 41332.
The utility model discloses in, the locating clip upper barrel 41324 and the locating clip lower barrel 41325 are the integral type structure. When the main shaft grabs the cutter 413 through the cutter grabbing structure 414, the cutter grabbing structure 414 directly grabs the upper cylinder of the positioning clamp upper cylinder 41324 and indirectly grabs the cutter 4131.
Since the knife grasping structure 414 indirectly grasps the knife 4131 and does not directly grasp the shank of the knife 4131, there is no damage to the knife 4131 and the useful life of the knife 4131 can be extended.
The utility model discloses because the structure is simplified, the fuselage volume, weight are compared with the traditional board of same function, and the volume, weight reduce about 1/3, can put the built on stilts floor of mill, very big convenience of customers is to the selection in production place. The weight of traditional board is about 3.5 tons, the utility model discloses it is heavy within 2.0 tons.
The numerical control device comprises a hardware printed circuit board, a CRT display, a key box, a paper tape reader and the like and corresponding software, and is used for inputting a digital part program, finishing storage of input information, transformation of data, interpolation operation and realizing various control functions.
The utility model discloses in also auxiliary device, it is the utility model provides a some necessary accessories for guarantee the operation of digit control machine tool, like cooling, chip removal, lubrication, illumination, monitoring etc. The numerical control rotary table comprises a hydraulic and pneumatic device, a chip removal device, an exchange workbench, a numerical control rotary table and a numerical control dividing head, and further comprises a cutter, a monitoring and detecting device and the like.
The utility model also has programming and other accessory equipment, and can be used for programming, storing and the like of parts outside the machine.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The CNC numerical control machine tool with the single-drive multi-spindle automatic tool changing function comprises a frame (1), wherein a processing table top (2), a tool magazine (3) and a processing part (4) are arranged on the frame (1), the processing part (4) comprises spindle fixing seats (41), more than two spindles (411) are vertically arranged on the spindle fixing seats (41), all the spindle fixing seats (41) are driven by a Z-direction driving mechanism (412), and each spindle (411) is internally provided with a tool grabbing structure (414) for grabbing a tool (413), the CNC numerical control machine tool is characterized in that a reference surface (4111) of each spindle (411) is in the same horizontal plane, a plurality of tools (413) are stored in the tool magazine (3), each tool (413) is provided with a tool (4131) and a positioning clamp (4132), the positioning clamp (4132) is coaxially positioned and arranged on a tool shank of the tool (4131), and the distance from the positioning surface (41321) of the positioning clamp (4132) of each tool (413) to the processing tool face (41311) is equal; after the cutter grabbing structure grabs the cutter (413), a positioning surface (41321) of the positioning clamp (4132) is tightly attached to a reference surface (4111) of the spindle (411).
2. The CNC (computerized numerical control) machine tool with single-drive multi-spindle automatic tool changing function according to claim 1, wherein the tool grabbing structure (414) comprises a spindle cylinder (4141) arranged in the spindle (411), a driving rod (4143) connected with an output shaft (4142) of the spindle cylinder (4141), a belleville spring (4144) driven by the output shaft (4142) is arranged at the upper end of the driving rod (4143), and a locking nozzle (4145) is arranged at the lower end of the driving rod (4143).
3. The CNC NC machine tool with single-drive multi-spindle automatic tool changing according to claim 1 or 2, characterized in that the tool magazine (3) is provided with a plurality of tool holders (31), each tool holder (31) is provided with a clamping part (311) for holding a positioning clamp (4132) of a tool (413), and a tool holder elastic body (312) located below the clamping part (311) for pushing the tool (413) upwards.
4. The CNC numerical control machine tool with single-drive multi-spindle automatic tool changing according to claim 1 or 2, characterized in that, the two or more spindles (411) are 2-24 spindles.
5. The CNC numerical control machine tool with single-drive multi-spindle automatic tool changing function as claimed in claim 1 or 2, characterized in that the locating clamp (4132) is coaxially and fixedly arranged on the shank of the knife (4131) through a fastener or a heat shrinkage mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221524643.2U CN218051516U (en) | 2022-06-18 | 2022-06-18 | Single-drive multi-spindle CNC (computer numerical control) machine tool capable of automatically changing tools |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221524643.2U CN218051516U (en) | 2022-06-18 | 2022-06-18 | Single-drive multi-spindle CNC (computer numerical control) machine tool capable of automatically changing tools |
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| CN218051516U true CN218051516U (en) | 2022-12-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918710A (en) * | 2022-06-18 | 2022-08-19 | 深圳市裕佳康精密科技有限公司 | Automatic tool changing method of single-drive multi-spindle CNC (computerized numerical control) machine tool and machine tool thereof |
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2022
- 2022-06-18 CN CN202221524643.2U patent/CN218051516U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918710A (en) * | 2022-06-18 | 2022-08-19 | 深圳市裕佳康精密科技有限公司 | Automatic tool changing method of single-drive multi-spindle CNC (computerized numerical control) machine tool and machine tool thereof |
| CN114918710B (en) * | 2022-06-18 | 2024-09-20 | 深圳市裕佳康精密科技有限公司 | Automatic tool changing method of single-drive multi-spindle CNC (computer numerical control) machine tool and machine tool thereof |
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