CN103465076B - A kind of 4 clamping fixtures - Google Patents

A kind of 4 clamping fixtures Download PDF

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Publication number
CN103465076B
CN103465076B CN201310433377.1A CN201310433377A CN103465076B CN 103465076 B CN103465076 B CN 103465076B CN 201310433377 A CN201310433377 A CN 201310433377A CN 103465076 B CN103465076 B CN 103465076B
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China
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clamping
face
oil cylinder
positioning disk
clamping device
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CN103465076A (en
Inventor
蒋宏宝
甘宏云
刘胜
姚家鑫
蒋堃
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NANJING ZHONGDELI AUTOMATED MACHINE CO Ltd
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NANJING ZHONGDELI AUTOMATED MACHINE CO Ltd
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Abstract

The invention discloses a kind of 4 clamping fixtures, comprise clamping fixture seat, positioning disk, positioning sleeve, three groups of face clamping devices and one group of transverse clamping device, described positioning disk is arranged on clamping fixture seat by positioning sleeve, positioning disk coordinates the end face of clamping work pieces with face clamping device, transverse clamping device clamps radiation tendon at horizontal direction, clamping device provides power by oil cylinder, and oil cylinder is arranged on middle part and the rear portion on positioning disk exterior circular column surface respectively.The present invention is clamped workpiece by three groups of face clamping devices and one group of transverse clamping device, namely clamping be positioned in positioning disk plane 3 with this plane vertical more in a lateral direction, effectively can eliminate the clamping distortion caused because crossing location, high machining accuracy can be obtained, successfully solve a difficult problem for the thin-walled parts clamping distortion such as four radial muscle.

Description

A kind of 4 clamping fixtures
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 the thin-walled parts such as four 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 for installing the mechanisms such as bearing, and anterior major diameter is for supporting the mechanisms such as external shell.Under the prerequisite meeting requirement of strength, manufacturer's weight reduction as far as possible, reduce price, so wall generally do very thin; And because profile more complicated, generally all try one's best and reduce processing capacity and adopt die casting.Because the accuracy of manufacture of die casting can not be too high, and due to reasons such as cooling strains, the die casting shape of thin-wall construction can not be very accurate, particularly anterior major diameter is for installing the plane at four connecting hole places of external shell, namely height is not formed not etc. after die casting, there is certain flatness error, if adopt 4 positions be in same plane position and clamp simultaneously, because wherein 3 have 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 to design a kind of special fixture clamping special thin-walled parts, part indeformable (or minute quantity distortion) when making to clamp; And there is certain clamping rigidity, guarantee the cutting force resisting part, by obtaining the precision component meeting 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, the thin-walled parts such as four radial muscle are clamped, effectively reduce clamping distortion, machining accuracy is 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 face clamping device, and face clamping device provides power by 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 middle part and the rear portion on positioning disk exterior circular column surface respectively.
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 and fork pass through pinned connection, fork rotates around pin, and by fork top and positioning disk clamping work pieces, pin is fixed on end face support.
As preferably, described face clamping device has three groups, and 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, is positioned at 3 of same plane carries out face clamping to the workpiece be placed on positioning disk basal plane.
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, horizontal oil cylinder rear end is fixed on clamping fixture seat, the compression axis that transverse clamping device comprises horizontal piston rod, the driving lever be connected with horizontal piston rod and is connected with driving lever, driving lever is connected with the horizontal support be fixed on clamping fixture seat by bearing pin, horizontal hydraulic oil cylinder driving piston rod movement, piston rod drives driving lever motion, driving lever drives compression axis laterally to hold out against workpiece radiation tendon, at the right opposite of this radiation tendon, locating shaft is had to support.The front and back position of locating shaft is adjusted by handwheel, can by locking device after adjustment terminates, and such as tightening wheel carries out position to be fixed.
As preferably, the middle part of described locating shaft is provided with locking device.
As preferably, cylinder and the centring sleeve endoporus of described workpiece afterbody are done to coordinate, and position in diametric(al) workpiece.
First use less hydraulic pressure to carry out the adaptability examination folder of oil cylinder during described 4 clampings, after the adjustment of each several part position is comfortable, adopts large hydraulic pressure to carry out the work clamping of oil cylinder, to ensure that the deflection of workpiece is reduced to minimum again.
Beneficial effect: 4 clamping fixtures of the present invention, by adopting three groups of face clamping devices and one group of transverse clamping device, the thin-walled parts with four radial muscle is clamped, namely clamping be positioned in positioning disk plane 3 with this plane vertical more in a lateral direction, effectively can eliminate the clamping distortion caused because crossing location, high machining accuracy can be obtained, and there is certain clamping rigidity, the part indeformable (or minute quantity distortion) when clamping, successfully solves a difficult problem for the thin-walled parts clamping distortion such as four radial muscle.
Accompanying drawing explanation
Fig. 1 is Workpiece structure schematic diagram;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the cross-sectional schematic of Fig. 3.
Detailed description of the invention
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 many group face clamping devices, clamping fixture seat 5 is contained on the surface of machine tool rotary working table by screw, and positioning disk 12 is contained in clamping fixture seat 5 surface by screw.Face clamping device comprises piston rod 7, bearing pin 8, end face support 9, pin 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 top 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 face clamping device, and 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, and face clamping device has three groups, and end face oil cylinder 6 has three.
In the present embodiment, clamping fixture seat 5 rear portion is provided with transverse clamping device, and transverse clamping device is driven by horizontal oil cylinder 2, and horizontal oil cylinder 2 rear end is 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 be fixed on clamping fixture seat 5 by bearing pin, the shift fork of driving lever 19 front portion surrounds compression axis 18, when horizontal oil cylinder 2 piston rod motion, piston rod drives driving lever 19 to move, driving lever 19 drives compression axis 18 pairs of workpiece 13 1 radiation tendons laterally to hold out against, at the right opposite of this radiation tendon, locating shaft 4 is had to support, 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 locking device 3 locking positioning axle 4 again.During work, workpiece 13 is aligned and load in positioning disk 12 hole, the cylinder of workpiece 13 afterbody is done to coordinate with centring sleeve 14 endoporus, position in diametric(al) workpiece 13, now cylinder action, compression axis 18 produce and mobile 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, for four connecting hole place planes of installing external shell 3 of workpiece 13 are more progressively clamped with the muscle of this plane vertical, namely less hydraulic pressure is first used to carry out the adaptability examination folder of 4 positions, after the adjustment of each several part position is comfortable, adopt large hydraulic pressure to carry out work clamping again, to ensure that the deflection of workpiece is reduced to minimum, by obtaining the precision component meeting 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 (6)

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 face clamping device, 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; The cylinder of described workpiece (13) afterbody is done to coordinate with centring sleeve (14) endoporus, positions in diametric(al) workpiece (13).
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, end face oil cylinder (6) has three.
4. 4 clamping fixtures according to claim 1 or 3, 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), horizontal 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) be fixed on clamping fixture seat (5) by bearing pin, horizontal 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 workpiece (13) radiation tendons, at the right opposite of this radiation tendon, locating shaft (4) is had to support.
6. 4 clamping fixtures according to claim 5, is characterized in that: the middle part of described locating shaft (4) is provided with locking device (3).
CN201310433377.1A 2013-09-22 2013-09-22 A kind of 4 clamping fixtures Active CN103465076B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201310433377.1A CN103465076B (en) 2013-09-22 2013-09-22 A kind of 4 clamping fixtures

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CN103465076B true CN103465076B (en) 2015-08-05

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA01012811A (en) * 2001-01-18 2002-11-04 Progressive Tool & Ind Co 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

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