CN103465076A - Four-point clamping fixture - Google Patents
Four-point clamping fixture Download PDFInfo
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- CN103465076A CN103465076A CN2013104333771A CN201310433377A CN103465076A CN 103465076 A CN103465076 A CN 103465076A CN 2013104333771 A CN2013104333771 A CN 2013104333771A CN 201310433377 A CN201310433377 A CN 201310433377A CN 103465076 A CN103465076 A CN 103465076A
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Abstract
The invention discloses a four-point clamping fixture, which comprises a fixture seat, a positioning plate, a positioning bushing, three sets of end face clamping devices and a set of transverse clamping devices. The positioning plate is arranged on the fixture seat by the positioning bushing; the end face of a workpiece is clamped by matching the positioning plate and the end face clamping devices; four radiation ribs are clamped in a transverse direction by the transverse clamping devices; power is provided for the clamping devices by oil cylinders; the oil cylinders are respectively arranged at the middle part and the rear part of the outer cylindrical surface of the positioning plate. According to the four-point clamping fixture disclosed by the invention, the workpiece is clamped by the three sets of end face clamping devices and a set of transverse clamping devices, i.e. clamping is located at three points on the plane of the positioning plate and one point which is vertical to the plane and is located in the transverse direction, and therefore, clamping deformation caused by redundant positioning can be effectively eliminated, high machining precision can be obtained, and the problem of the clamping deformation of thin-walled parts, such as the four radiation ribs and the like, are successfully solved.
Description
Technical field
The present invention relates to a kind of machine tool auxiliary device, be specifically related to a kind of on lathe for clamping 4 clamping fixtures of four thin-walled parts such as radial muscle.
Background technology
Disk-like accessory in machine components often adopts the thin-wall construction of four radial gussets, and as depicted in figs. 1 and 2, general afterbody minor diameter is used for installing the mechanisms such as bearing, and anterior major diameter is used for supporting the mechanisms such as external shell.Meeting under the prerequisite of requirement of strength, manufacturer's weight reduction as far as possible, reducing price, so that wall is generally done is very thin; And because the profile more complicated, generally all reduce processing capacity as far as possible and adopt die casting.Because the accuracy of manufacture of die casting can be too not high, and due to reasons such as cooling strains, the die casting shape of thin-wall construction can be very inaccurate, particularly anterior major diameter is for installing the plane at four connecting hole places of external shell, forming height after die casting does not wait, certain flatness error is arranged, if adopt 4 positions that are in same plane position and clamp simultaneously, due to wherein 3 determined a plane, the clamping force of the 4th makes this plane occur bending and deformation, once completion of processing, after part unclamps, the precision of this machined surface and flatness can change because of the disappearance of clamping force, part produces defective.
Therefore, in order to obtain qualified workpiece, need a kind of special fixture that clamps special thin-walled parts of design, part indeformable (or minute quantity distortion) while making clamping; And there is certain clamping rigidity, guarantee to resist the cutting force of part, by obtaining meeting the precision component of drawing requirement after processing.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of 4 clamping fixtures, by three groups of face clamping devices and one group of transverse clamping device, four thin-walled parts such as radial muscle are clamped, effectively reduced the clamping distortion, make machining accuracy be improved.
Technical scheme: for achieving the above object, a kind of 4 clamping fixtures of the present invention, comprise clamping fixture seat, positioning disk, positioning sleeve and some groups of face clamping devices, described positioning disk is arranged on clamping fixture seat by positioning sleeve, positioning disk coordinates the end face of clamping work pieces with the face clamping device, the face clamping device provides power by the end face oil cylinder.
In the present invention, adopt three groups of face clamping devices and one group of transverse clamping device, transverse clamping device clamps radiation tendon at horizontal direction, and clamping device provides power by oil cylinder, and oil cylinder is arranged on respectively middle part and the rear portion on positioning disk exterior circular column surface.
As preferably, described face clamping device comprises piston rod, bearing pin, support, pin and fork, described piston rod is contained in the hole of end face oil cylinder, piston rod is connected with fork, piston rod is connected by bearing pin with fork, fork rotates around pin, and by fork top and positioning disk clamping work pieces, pin is fixed on the end face support.
As preferably, described face clamping device has three groups, and the end face oil cylinder has three.The cylinder body of three end face oil cylinders is made on the exterior circular column of positioning disk, by piston rod, bearing pin, support, pin and fork, to being placed in workpiece on the positioning disk basal plane, being positioned at 3 of same plane and carrying out face clamping.
As preferably, described clamping fixture seat rear portion is provided with transverse clamping device.
As preferably, described transverse clamping device is by horizontal hydraulic oil cylinder driving, laterally the oil cylinder rear end is fixed on clamping fixture seat, transverse clamping device comprise horizontal piston rod, with laterally the piston rod driving lever be connected and the compression axis be connected with driving lever, driving lever is connected with the horizontal support on being fixed on clamping fixture seat by bearing pin, horizontal hydraulic oil cylinder driving piston rod movement, piston rod drives the driving lever motion, driving lever drives compression axis laterally to hold out against a radiation tendon of workpiece, at the right opposite of this radiation tendon, there is locating shaft to be supported.The front and back position of locating shaft is adjusted by handwheel, after adjust finishing, can pass through locking device, and for example tightening is taken turns and carried out position and fix.
As preferably, the middle part of described locating shaft is provided with locking device.
As preferably, the cylinder of described workpiece afterbody is done to coordinate with the centring sleeve endoporus, and workpiece is positioned in diametric(al).
During described 4 clampings, first use less hydraulic pressure to carry out the adaptability examination folder of oil cylinder, the work that adopts again large hydraulic pressure to carry out oil cylinder after the adjustment of each several part position is comfortable clamps, and with the deflection that guarantees workpiece, reduces to minimum.
Beneficial effect: 4 clamping fixtures of the present invention, by adopting three groups of face clamping devices and one group of transverse clamping device, thin-walled parts with four radial muscle is clamped, i.e. clamping be positioned on the positioning disk plane 3 with vertical this plane more in a lateral direction, can effectively eliminate the clamping distortion caused because crossing location, can obtain high machining accuracy, and there is certain clamping rigidity, part indeformable (or minute quantity distortion) when clamping, successfully solved the difficult problem of four thin-walled parts such as radial muscle clamping distortion.
The accompanying drawing explanation
Fig. 1 is the Workpiece structure schematic diagram;
The right view that Fig. 2 is Fig. 1;
Fig. 3 is structural representation of the present invention;
The cross-sectional schematic that Fig. 4 is Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 3 and Figure 4, a kind of 4 clamping fixtures of the present invention, comprise clamping fixture seat 5, positioning disk 12, positioning sleeve 16 and organize the face clamping device more, clamping fixture seat 5 is contained in by screw on the surface of machine tool rotary working table, and positioning disk 12 is contained in clamping fixture seat 5 surfaces by screw.The face clamping device comprises piston rod 7, bearing pin 8, end face support 9, sell 11 and fork 10, piston rod 7 is contained in the hole of end face oil cylinder 6, piston rod 7 is connected by bearing pin 8 with fork 10, fork 10 rotates around pin 11, by fork 10 tops and positioning disk 12 clamping work pieces 13, pin 11 is fixed on end face support 9, and positioning disk 12 is arranged on clamping fixture seat 5 by positioning sleeve 16, and is fixed by bolt; Positioning disk 12 coordinates the end face of clamping work pieces 13 with the face clamping device, the face clamping device provides power by end face oil cylinder 6, and end face oil cylinder 6 is arranged on the middle part on positioning disk 12 exterior circular column surfaces, and the face clamping device has three groups, and end face oil cylinder 6 has three.
In the present embodiment, clamping fixture seat 5 rear portions are provided with transverse clamping device, and transverse clamping device is driven by horizontal oil cylinder 2, and laterally oil cylinder 2 rear ends are fixed on clamping fixture seat 5 by support and bearing pin, transverse clamping device comprises horizontal piston rod, piston rod is connected with driving lever 19 by pin, driving lever 19 is connected with the horizontal support 1 on being fixed on clamping fixture seat 5 by bearing pin, the shift fork of driving lever 19 front portions surrounds compression axis 18, when horizontal oil cylinder 2 piston rod motions, piston rod drives driving lever 19 motions, driving lever 19 drives 13 1 radiation tendons of 18 pairs of workpiece of compression axis laterally to hold out against, right opposite at this radiation tendon, there is locating shaft 4 to be supported, the middle part of locating shaft 4 is provided with locking device 3, after the axial length position adjustment suitably of locating shaft 4, use again locking device 3 locking positioning axles 4.During work, workpiece 13 is aligned in positioning disk 12 holes of packing into, the cylinder of workpiece 13 afterbodys is done to coordinate with centring sleeve 14 endoporus, workpiece 13 is positioned in diametric(al), and now cylinder action, compression axis 18 produce and mobile the cooperation with locating shaft 4 laterally clamp radiation tendon.
4 clamping fixtures of the present invention are when real work, four oil cylinders start action according to instruction, 3 to workpiece 13 for plane, four connecting hole places that external shell is installed more progressively clamp with the muscle on vertical this plane, first use less hydraulic pressure to carry out the adaptability examination folder of 4 positions, after the adjustment of each several part position is comfortable, adopt again large hydraulic pressure to carry out the work clamping, reduce to minimum with the deflection that guarantees workpiece, by obtaining meeting the precision component of drawing requirement after processing.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. 4 clamping fixtures, it is characterized in that: comprise clamping fixture seat (5), positioning disk (12), positioning sleeve (16) and some groups of face clamping devices, described positioning disk (12) is arranged on clamping fixture seat (5) by positioning sleeve (16), positioning disk (12) coordinates the end face of clamping work pieces (13) with the face clamping device, the face clamping device provides power by end face oil cylinder (6), and end face oil cylinder (6) is arranged on the middle part on positioning disk (12) exterior circular column surface.
2. 4 clamping fixtures according to claim 1, it is characterized in that: described face clamping device comprises piston rod (7), bearing pin (8), end face support (9), pin (11) and fork (10), described piston rod (7) is contained in the hole of end face oil cylinder (6), piston rod (7) is connected by bearing pin (8) with fork (10), fork (10) rotates around pin (11), by fork (10) top and positioning disk (12) clamping work pieces (13), pin (11) is fixed on end face support (9).
3. 4 clamping fixtures according to claim 1, it is characterized in that: described face clamping device has three groups, and end face oil cylinder (6) has three.
4. according to described 4 clamping fixtures of claim 1 or 3, it is characterized in that: described clamping fixture seat (5) rear portion is provided with transverse clamping device.
5. 4 clamping fixtures according to claim 4, it is characterized in that: described transverse clamping device is driven by horizontal oil cylinder (2), laterally oil cylinder (2) rear end is fixed on clamping fixture seat (5), transverse clamping device comprises horizontal piston rod, the driving lever (19) be connected with horizontal piston rod and the compression axis (18) be connected with driving lever (19), driving lever (19) is connected with the horizontal support (1) on being fixed on clamping fixture seat (5) by bearing pin, laterally oil cylinder (2) piston rod motion, piston rod drives driving lever (19) motion, driving lever (19) drives compression axis (18) laterally to hold out against (13) radiation tendons of workpiece, right opposite at this radiation tendon, there is locating shaft (4) to be supported.
6. 4 clamping fixtures according to claim 5, it is characterized in that: the middle part of described locating shaft (4) is provided with locking device (3).
7. 4 clamping fixtures according to claim 1 is characterized in that: the cylinder of described workpiece (13) afterbody is done to coordinate with centring sleeve (14) endoporus, and workpiece (13) is positioned in diametric(al).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433377.1A CN103465076B (en) | 2013-09-22 | 2013-09-22 | A kind of 4 clamping fixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433377.1A CN103465076B (en) | 2013-09-22 | 2013-09-22 | A kind of 4 clamping fixtures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103465076A true CN103465076A (en) | 2013-12-25 |
| CN103465076B CN103465076B (en) | 2015-08-05 |
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| CN201310433377.1A Active CN103465076B (en) | 2013-09-22 | 2013-09-22 | A kind of 4 clamping fixtures |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259885A (en) * | 2014-09-16 | 2015-01-07 | 芜湖市华益阀门制造有限公司 | Location device for inner hole location fixture |
| CN104669017A (en) * | 2015-01-31 | 2015-06-03 | 南通弘峰机电有限公司 | Fixture for planing machines |
| CN109262321A (en) * | 2018-11-09 | 2019-01-25 | 昆山市佰瑞精密机械零组件有限公司 | Flexible fixture based on CNC processing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020093131A1 (en) * | 2001-01-18 | 2002-07-18 | Dugas Michael R. | Clamping locator |
| CN201496450U (en) * | 2009-08-13 | 2010-06-02 | 布雷博(南京)制动系统有限公司 | Part to be processed with three positioning holes and positioning and clamping device thereof |
| CN101954504A (en) * | 2010-08-31 | 2011-01-26 | 溧阳市虹翔机械制造有限公司 | Machining fixture for automobile pressure plate |
| CN201720714U (en) * | 2010-08-09 | 2011-01-26 | 焦作瑞塞尔盘式制动器有限公司 | Hydraulic rotating clamp for processing cylinder body of disc-type brake |
| CN202079414U (en) * | 2011-04-28 | 2011-12-21 | 上海飞华汽车部件有限公司 | Positioning jig for processing thin large-aperture disc type part |
| CN203156414U (en) * | 2013-04-01 | 2013-08-28 | 南京众得利自动化机械有限公司 | Linkage type clamp device |
| CN203184974U (en) * | 2013-03-14 | 2013-09-11 | 瑞立集团瑞安汽车零部件有限公司 | Multiple spindle drilling machine rotary jig capable of conducting multiple machining processes synchronously |
| CN203484949U (en) * | 2013-09-22 | 2014-03-19 | 南京众得利自动化机械有限公司 | Four-point clamping fixture |
-
2013
- 2013-09-22 CN CN201310433377.1A patent/CN103465076B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020093131A1 (en) * | 2001-01-18 | 2002-07-18 | Dugas Michael R. | Clamping locator |
| CN201496450U (en) * | 2009-08-13 | 2010-06-02 | 布雷博(南京)制动系统有限公司 | Part to be processed with three positioning holes and positioning and clamping device thereof |
| CN201720714U (en) * | 2010-08-09 | 2011-01-26 | 焦作瑞塞尔盘式制动器有限公司 | Hydraulic rotating clamp for processing cylinder body of disc-type brake |
| CN101954504A (en) * | 2010-08-31 | 2011-01-26 | 溧阳市虹翔机械制造有限公司 | Machining fixture for automobile pressure plate |
| CN202079414U (en) * | 2011-04-28 | 2011-12-21 | 上海飞华汽车部件有限公司 | Positioning jig for processing thin large-aperture disc type part |
| CN203184974U (en) * | 2013-03-14 | 2013-09-11 | 瑞立集团瑞安汽车零部件有限公司 | Multiple spindle drilling machine rotary jig capable of conducting multiple machining processes synchronously |
| CN203156414U (en) * | 2013-04-01 | 2013-08-28 | 南京众得利自动化机械有限公司 | Linkage type clamp device |
| CN203484949U (en) * | 2013-09-22 | 2014-03-19 | 南京众得利自动化机械有限公司 | Four-point clamping fixture |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259885A (en) * | 2014-09-16 | 2015-01-07 | 芜湖市华益阀门制造有限公司 | Location device for inner hole location fixture |
| CN104259885B (en) * | 2014-09-16 | 2017-01-25 | 芜湖市华益阀门制造有限公司 | Location device for inner hole location fixture |
| CN104669017A (en) * | 2015-01-31 | 2015-06-03 | 南通弘峰机电有限公司 | Fixture for planing machines |
| CN109262321A (en) * | 2018-11-09 | 2019-01-25 | 昆山市佰瑞精密机械零组件有限公司 | Flexible fixture based on CNC processing |
| CN109262321B (en) * | 2018-11-09 | 2023-09-19 | 昆山市佰瑞精密机械零组件有限公司 | Flexible clamp based on CNC processing |
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| Publication number | Publication date |
|---|---|
| CN103465076B (en) | 2015-08-05 |
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