CN214722141U

CN214722141U - Special clamp for turning and milling composite processing of piston cylinder shell

Info

Publication number: CN214722141U
Application number: CN202023265347.9U
Authority: CN
Inventors: 刘战锋; 杜登攀; 张�浩; 徐凯; 李永安
Original assignee: Xi'an Modern Deep Hole Technology Co ltd
Current assignee: Xi'an Modern Deep Hole Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-16
Anticipated expiration: 2030-12-29

Abstract

The special fixture for turning and milling combined machining of the piston cylinder shell comprises a support, wherein first positioning blocks are symmetrically arranged at the left end and the right end of the upper surface of the support, hinge fork seats are arranged on one sides of the upper surface of the first positioning blocks and connected with hinge pressing plates through first hinge shafts, the hinge pressing plates are connected with floating pressing plates through the first hinge shafts, hinge screws are arranged on the other sides of the upper surfaces of the first positioning blocks, the upper ends of the hinge screws are connected with the hinge pressing plates, the floating pressing plates are in contact with a workpiece, the contact surfaces of the hinge forks are of arc-shaped structures, one end of the support is connected to a fixture body, a balancing weight is arranged above the fixture body connected with the support, a positioning sleeve is arranged inside the fixture body, and the end of the positioning sleeve is provided with a second positioning block. The utility model discloses thereby the machining efficiency of improvement piston cylinder casing both ends flange that can be very big reduces the work piece quality that the clamping number of times improved processing out.

Description

Special clamp for turning and milling composite processing of piston cylinder shell

Technical Field

The utility model relates to a turnning and milling combined machining technical field, in particular to a special fixture for piston barrel casing turnning and milling combined machining.

Background

In machining a workpiece, a large number of jigs are widely used in consideration of machining accuracy, machining efficiency, and the like. The jig is a device for fixing a processing object to take a correct position to receive construction or inspection in a machining process. By definition, it is one of the important functions of a machining object, i.e. a workpiece, to occupy the correct position, and in production, machining of a piston cylinder housing is often encountered.

At present, no special turning and milling clamp is provided for processing flanges at two ends of a piston cylinder shell, and the processing of the flanges at two ends of the piston cylinder shell can be only carried out through numerical control milling. This machining method is not only inefficient in machining efficiency, but also is not rational in the quality of the machined workpiece.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a special fixture for piston cylinder shell turn-milling combined machining, thereby the machining efficiency of improvement piston cylinder shell both ends flange that can be very big reduces the work piece quality that the clamping number of times improves the processing.

In order to realize the purpose, the utility model discloses a technical scheme is:

the utility model provides a special fixture for piston cylinder casing turn-milling combined machining, includes support 8, both ends symmetry is provided with locating piece one 2 about the support 8 upper surface, 2 upper surface one sides of locating piece one are provided with hinge fork seat 4, and hinge fork seat 4 is connected through hinge pin one 11 with hinge clamp plate 5, hinge clamp plate 5 is connected with unsteady clamp plate 6 through hinge pin one 11, and 2 upper surface opposite sides of locating piece one are provided with hinge screw rod 3, and hinge screw rod 3 upper end links to each other with hinge clamp plate 5, unsteady clamp plate 6 and work piece contact, the contact surface is convex structure, 8 one end of support is connected on the anchor clamps body 1, is provided with balancing weight 9 above the anchor clamps body that links to each other with

support

8, 1 inside locating sleeve 10 that sets up of anchor clamps body, locating sleeve 10 tip sets up locating piece two 7.

The first positioning block 2 is positioned through a first internal thread cylindrical pin 20 and then fixed on the support 8 through a third internal hexagonal cylindrical head screw 17.

The hinge fork seat 4 and the hinge pressing plate 5 are fixed through a cotter pin 24, and the hinge pressing plate 5 and the floating pressing plate 6 are fixed through the cotter pin 24.

The lower end of the hinge screw rod 3 is connected with the first positioning block 2 through a hinge shaft II 12 and then fixed with the first positioning block 2 through a cotter pin 24.

The upper end of the hinge screw rod 3 and the hinge pressure plate 5 are screwed through a hexagonal flange nut 25 to fix the workpiece.

The fixture body 1 is connected to the fixture body seat 26 through a second hexagon socket head cap screw 16.

The bracket 8 is positioned with the clamp body 1 through a second internal thread cylindrical pin 21 and then screwed down through a first internal hexagonal cylindrical head screw 15.

The interior of the fixture body 1 is positioned with the positioning sleeve 10 through a third internal thread cylindrical pin 22 and then fixed through a second internal hexagonal cylindrical head screw 16.

The second positioning block 7 is assembled on the right side of the positioning sleeve 10 and is in interference fit with the diamond-shaped pin 14.

The utility model has the advantages that:

the utility model discloses place the work piece and carry out radial positioning on locating piece one, then carry out terminal surface axial positioning through locating piece two again, the corner of 14 restriction parts of diamond pin. At this moment, under the effect of hinge clamp plate and floating clamp plate, screw up through hinge screw rod and hexagonal flange face nut, just can carry out processing on next step to the work piece behind the fixed work piece, the combined machining of piston cylinder casing on this special fixture has been satisfied on the digit control machine tool in the design of this special fixture, has improved the machining efficiency and the machining precision of part greatly.

The utility model discloses a position sleeve 10 and two, the a pair of work pieces of locating piece are fixed a position, realize the accurate location of work piece, provide the guarantee for the machining precision of guaranteeing the work piece.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a left side view of the present invention.

Fig. 5 is a right side view of the present invention.

In the figure: 1. a clamp body; 2. a first positioning block; 3. a hinge screw; 4. a hinge fork mount; 5. a hinge pressing plate; 6. a floating pressure plate; 7. a second positioning block; 8. a support; 9. a balancing weight; 10. a positioning sleeve; 11. a first hinge shaft; 12. a second hinge shaft; 13. positioning pins; 14. a diamond pin; 15. a first hexagonal socket head screw; 16. a second hexagon socket head cap head screw; 17. a third inner hexagonal socket head cap screw; 18. a socket head cap screw; 19. a fourth inner hexagonal socket head cap screw; 20. a first cylindrical pin with internal threads; 21. a second cylindrical pin with internal threads; 22. a third cylindrical pin with internal threads; 23. a fourth cylindrical pin with internal threads; 24. a cotter pin; 25. a hexagonal flange face nut; 26. and (4) a clamp body seat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-5, the present invention provides a special fixture for piston cylinder shell turning and milling composite processing, wherein a first positioning block 2 is arranged at the upper end of a support 8, the first positioning block 2 is positioned by an internal thread cylindrical pin and then fixed on the support 8 by an internal hexagonal socket head screw, the first positioning block 2 is connected with a hinge fork seat 4, the hinge fork seat 4 is connected with a hinge pressing plate 5 by a first hinge shaft 11 and fixed by a cotter pin, the hinge pressing plate 5 is connected with a floating pressing plate 6 by the first hinge shaft 11 and fixed by the cotter pin, the lower end of a hinge screw 3 is connected with the first positioning block 2 by a second hinge shaft 12 and fixed with the first positioning block 2 by the cotter pin, the upper end of the hinge screw 3 and the hinge pressing plate 5 are screwed by a hexagonal flange nut to fix a workpiece, a balancing weight 9 is fixed on a fixture body 1 by the internal hexagonal socket head screw, the fixture body 1 is connected to the fixture body seat 26 through an inner hexagonal socket head cap screw, and the support 8 is positioned with the fixture body 1 through an inner threaded cylindrical pin and then screwed down through the inner hexagonal socket head cap screw.

The positioning blocks I2, the positioning blocks II 7 and the diamond pins 14 are matched to ensure accurate positioning of the workpiece, and then the workpiece is screwed down through the hinge screw rods 3 and the hexagonal flange nuts 25 under the action of the hinge pressing plates 5 and the floating pressing plates 6.

The utility model discloses a theory of operation and use flow:

firstly, a workpiece is placed on the first positioning block 2 for radial positioning, then the second positioning block 7 for axial positioning is used for limiting the circumferential rotation of the part under the action of the diamond-shaped pin 14. At this time, the hinge screw 3 and the hexagonal flange nut 25 are tightened by the hinge pressing plate 5 and the floating pressing plate 6, and the workpiece can be processed in the next step after being fixed.

Claims

1. A special fixture for turning and milling composite processing of a piston cylinder shell is characterized by comprising a support (8), wherein positioning blocks I (2) are symmetrically arranged at the left end and the right end of the upper surface of the support (8), a hinge fork seat (4) is arranged on one side of the upper surface of each positioning block I (2), the hinge fork seats (4) are connected with a hinge pressing plate (5) through hinge shafts I (11), the hinge pressing plate (5) is connected with a floating pressing plate (6) through the hinge shafts I (11), a hinge screw rod (3) is arranged on the other side of the upper surface of each positioning block I (2), the upper end of the hinge screw rod (3) is connected with the hinge pressing plate (5), the floating pressing plate (6) is in contact with a workpiece, the contact surface is of a circular arc-shaped structure, one end of the support (8) is connected onto a fixture body (1), and a balancing weight (9) is arranged above the fixture body connected with the support (8), a positioning sleeve (10) is arranged in the clamp body (1), and a second positioning block (7) is arranged at the end part of the positioning sleeve (10).

2. The special fixture for the piston cylinder shell turning and milling combined machining is characterized in that the positioning block I (2) is positioned through a cylindrical pin I (20) with internal threads and then fixed on the support (8) through a hexagon socket head cap screw III (17).

3. The special fixture for the piston cylinder shell turning and milling combined machining is characterized in that the hinge fork seat (4) and the hinge pressing plate (5) are fixed through a split pin (24), and the hinge pressing plate (5) and the floating pressing plate (6) are fixed through the split pin (24).

4. The special fixture for the piston cylinder shell turning and milling combined machining is characterized in that the lower end of the hinge screw (3) is connected with the first positioning block (2) through the second hinge shaft (12) and then fixed with the first positioning block (2) through the split pin (24).

5. The special fixture for the piston cylinder shell turning and milling composite machining is characterized in that the upper end of the hinge screw rod (3) and the hinge pressure plate (5) are screwed through a hexagonal flange nut (25) to fix a workpiece.

6. The special clamp for the piston cylinder shell turning and milling combined machining is characterized in that the clamp body (1) is connected to the clamp body seat (26) through a second hexagon socket head cap screw (16).

7. The special fixture for the piston cylinder shell turning and milling combined machining is characterized in that the support (8) is positioned with the fixture body (1) through a second internal thread cylindrical pin (21) and then is screwed through a first internal hexagonal cylindrical head screw (15).

8. The special clamp for the piston cylinder shell turning and milling combined machining is characterized in that the interior of the clamp body (1) is positioned with the positioning sleeve (10) through a third cylindrical pin (22) with internal threads and then fixed through a second hexagon socket head cap screw (16).

9. The special fixture for the piston cylinder shell turning and milling combined machining is characterized in that the second positioning block (7) is assembled on the right side of the positioning sleeve (10) and is in interference fit with the diamond-shaped pin (14).