CN215700032U

CN215700032U - Hydraulic motor swash plate processing grouping fixture

Info

Publication number: CN215700032U
Application number: CN202122317017.8U
Authority: CN
Inventors: 刘志强; 王广南; 裴晓梅; 徐友生
Original assignee: Wuxi L&r Precision Machinery Co ltd
Current assignee: Wuxi L&r Precision Machinery Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-01
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a hydraulic motor swash plate processing grouping fixture, which comprises a positioning device; the positioning device comprises a bridge plate, an inclined plane positioning seat, a mandrel and a positioning block; the inclined plane positioning seat is attached to the top of the bridge plate; the inclined plane positioning seat inclined plane area is correspondingly attached to the inclined plane on the workpiece; the inclined plane positioning seats are distributed in central symmetry around the center of the bridge plate; the positioning blocks are arranged among the plurality of inclined plane positioning seats; the inclined plane positioning seat is provided with a positioning hole in a penetrating way; the bridge plate is provided with a plurality of through holes; the upper end of the mandrel is clamped in the reserved hole position of the workpiece; the positioning block is in contact with the side surface of the workpiece in a fitting manner; the lower end of the mandrel penetrates through the reserved hole site, the positioning hole and the through hole in the workpiece in sequence and then extends to the bottom of the bridge plate; the positioning device can be used for clamping once, processing of four workpieces is completed, positioning is rapid, the pressing mode is simple and stable, clamping time and program operation time of the workpieces are greatly reduced, the production period is shortened, and manufacturing cost is reduced.

Description

Hydraulic motor swash plate processing grouping fixture

Technical Field

The utility model relates to the field of clamps, in particular to a hydraulic motor swash plate machining grouping clamp.

Background

The structures of the inclined step surface, the ball socket and the like on the large end surface of the hydraulic motor swash plate are complex, and the precision requirement is high. Because the step surface and the axis of the hole form a certain angle, in general, the machining processes of milling the inclined surface, drilling the hole on the end surface and the like need to be finished by two working procedures, and two sets of independent tool fixtures need to be designed and manufactured. The mode of processing one by one increases the cost of designing and manufacturing the tool clamp, and increases the clamping time, the program operation time and the field circulation time, thereby prolonging the production period and increasing the manufacturing cost. Therefore, the clamping and the processing can be completed in one working procedure at one time. Therefore, the utility model is necessary to provide the grouped fixture for processing the swash plate of the hydraulic motor, which has high clamping efficiency and adjustable angle.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a hydraulic motor swash plate processing grouped clamp which is high in clamping efficiency and adjustable in angle.

The technical scheme is as follows: in order to achieve the purpose, the hydraulic motor swash plate machining grouped fixture comprises a positioning device; the positioning device comprises a bridge plate, an inclined plane positioning seat, a mandrel and a positioning block; the inclined plane positioning seat is attached to the top of the bridge plate; the inclined plane area of the inclined plane positioning seat is correspondingly attached to the inclined plane on the workpiece; the inclined plane positioning seats are distributed in a central symmetry mode relative to the center of the bridge plate; the positioning blocks are arranged among the plurality of inclined plane positioning seats; the inclined plane positioning seat is provided with a positioning hole in a penetrating way; the bridge plate is provided with a plurality of through holes; the upper end of the mandrel is clamped in a reserved hole position of the workpiece; the positioning block is in contact with the side face of the workpiece in a fitting manner; the lower end of the mandrel penetrates through the reserved hole position, the positioning hole and the through hole in the workpiece in sequence and then extends to the bottom of the bridge plate.

Furthermore, a V-shaped opening is formed in the side face of the positioning block, and the V-shaped opening is matched with the workpiece in a clamping mode.

Further, the device also comprises a pressing device; the pressing device comprises a jacking bolt; the bridge plate is provided with a threaded hole; the tightening bolt is matched and penetrates through the threaded hole; a spacer bush is arranged at the front end shaft shoulder of the puller bolt; the spacer bush is sleeved and connected with a pushing and fastening plate; the pushing locking plate is connected with the lower end of the mandrel.

Further, the pushing locking plate freely rotates around the spacer bush; the lower end of the mandrel is provided with a neck groove; openings are formed at two ends of the pushing locking plate; the opening is correspondingly clamped with the neck groove.

Further, the device also comprises a rotating mechanism; the rotating mechanism comprises a connecting plate and an index plate; the bridge plate is connected with the upper surface of the connecting plate; the connecting plate is connected with the dividing plate; the rotating indexing disc drives the bridge plate to synchronously rotate.

Further, the rotating mechanism further comprises a tailstock; one side of the index plate, which is back to the connecting plate, is in rotary fit with the tailstock; a cylindrical pin is arranged between the tailstock and the index plate; the cylindrical pin is embedded in the dividing disc to limit the degree of freedom of rotation.

Has the advantages that: the utility model relates to a hydraulic motor swash plate processing grouping clamp, wherein a main body, namely four groups of positioning and pressing devices are arranged on a bridge plate, and the bridge plate can rotate around an X axis in an A rotation coordinate within the range of-30-110 degrees by utilizing a limiting structure, so that the processing tasks in a plurality of angles around the X axis can be completed by one-time clamping. The positioning inclined plane of each inclined plane positioning seat limits the moving freedom degree of the workpiece along the Z axis and the rotating freedom degrees of the workpiece around the X axis and the Y axis, and simultaneously, the rotating freedom degree of the workpiece around the Z axis and the moving freedom degree of the workpiece along the Y axis are limited by the angle of the inclined plane; the mandrel repeatedly limits the freedom of movement of the workpiece along the Y-axis and the freedom of rotation about the X-axis and the Y-axis while limiting the freedom of movement of the workpiece along the X-axis. Since the positioning reference surfaces of the workpiece in the fixture are the finished surfaces, the over-positioning state is allowed to exist, and the positioning reliability can be enhanced. The group fixture can realize one-time clamping, complete the processing of four workpieces, has rapid positioning and simple and stable compression mode, greatly reduces the clamping time and the program operation time of the workpieces, shortens the production period and reduces the manufacturing cost.

Drawings

FIG. 1 is a front view of a hydraulic motor swash plate machining cluster fixture;

FIG. 2 is a top view of a hydraulic motor swash plate machining cluster fixture;

FIG. 3 is a cross-sectional view of a hydraulic motor swash plate machining set fixture B-B.

Detailed Description

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

The hydraulic motor swash plate processing group fixture comprises a positioning device; the positioning device comprises a bridge plate 5, an inclined plane positioning seat 8, a mandrel 7 and a positioning block 20; the inclined plane positioning seat 8 is attached to the top of the bridge plate 5; the inclined plane area of the inclined plane positioning seat 8 is correspondingly attached to the inclined plane on the workpiece 25; the inclined plane positioning seats 8 are distributed in central symmetry around the center position of the bridge plate 5; the positioning blocks 20 are arranged among the plurality of inclined plane positioning seats 8; a positioning hole is arranged on the inclined plane positioning seat 8 in a penetrating way; the bridge plate 5 is provided with a plurality of through holes; the upper end of the mandrel 7 is clamped in a reserved hole of the workpiece 25; the positioning block 20 is in contact with the side surface of the workpiece 25; the lower end of the mandrel 7 sequentially penetrates through the reserved hole position, the positioning hole and the through hole on the workpiece 25 and then extends to the bottom of the bridge plate 5. And a V-shaped opening is formed in the side surface of the positioning block 20, and the V-shaped opening is matched with the workpiece 25 in a clamping manner.

The hydraulic motor swash plate processing grouping clamp also comprises a pressing device; the pressing device comprises a jacking bolt 9; the bridge plate 5 is provided with a threaded hole; the puller bolt 9 is matched and penetrates through the threaded hole; a spacer bush 10 is arranged at the front end shaft shoulder of the puller bolt 9; the spacer bush 10 is sleeved and connected with a pushing locking plate 14; the pushing locking plate 14 is connected with the lower end of the mandrel 7. The pushing locking plate 14 freely rotates around the spacer bush 10; the lower end of the mandrel 7 is provided with a neck groove; openings are arranged at two ends of the pushing locking plate 14; the opening is correspondingly clamped with the neck groove.

The hydraulic motor swash plate machining grouping clamp further comprises a rotating mechanism; the rotating mechanism comprises a connecting plate 6 and an index plate 15; the bridge plate 5 is connected with the upper surface of the connecting plate 6; the connecting plate 6 is connected with the dividing disc 15; the rotating indexing disk 15 drives the bridge plate 5 to rotate synchronously. The rotating mechanism further comprises a tailstock 1; one side of the index plate 15, which is back to the connecting plate 6, is in rotating fit with the tailstock 1; a cylindrical pin 18 is arranged between the tailstock 1 and the index plate 15; the cylindrical pin 18 is fitted into the index plate 15 to restrict the rotational degree of freedom.

The concrete assembly structure of the grouped fixture for processing the swash plate of the hydraulic motor is as follows:

one end of the plane of the inclined plane positioning seat 8 is tightly attached to the upper plane of the bridge plate 5, two phi 8 multiplied by 29 cylindrical pins 24 are respectively inserted into pin holes on the inclined plane positioning seat 8 and the bridge plate 5, and then four M8 multiplied by 45 hexagon socket head cap screws 13 penetrate through a countersunk hole on the lower plane of the bridge plate 5 and are fastened with M8 threaded holes at the plane end of the inclined plane positioning seat 8, so that the inclined plane positioning seat 8 is fixed on the bridge plate 5. An H7-grade precision positioning hole is formed in the center of the inclined plane positioning seat 8, and a through hole is formed in the bridge plate 5 in the corresponding position. The positioning block 20 is fixed on the top of the linear guide rail sliding block 22 through M4X 30 hexagon socket cap head screws 21, the linear guide rail sliding block 22 is fixed on the symmetrical center positions of four stations of the bridge plate 5 through M4X 14 hexagon socket cap head screws 23, the V-shaped pre-positioning workpiece of the positioning block 20 is accurate in the Y direction in the fixture, then the inclined surface of the workpiece is tightly attached to the positioning inclined surface of the inclined surface positioning seat 8, the mandrel 7 penetrates through a workpiece center positioning reference hole and a central positioning hole of the inclined surface positioning seat 8, and the neck groove of the mandrel 7 extends out of the lower plane of the bridge plate 5. The X-axis and Y-axis directions are indicated at the lower left corner of fig. 2, and the Z-axis is the height direction perpendicular to the X-axis and Y-axis.

The M20 puller bolt 9 is screwed into the M20 threaded hole on the bridge plate 5, the shaft shoulder at the front end of the puller bolt 9 is provided with a spacer 10, the spacer 10 is provided with a puller lock catch plate 14, the spacer 10 is locked through a flat washer 11 and a hexagon nut 12, the puller lock catch plate 14 can rotate around the spacer 10, and the openings with two reversely arranged ends are clamped into the neck groove of the mandrel 7. And (4) screwing the puller bolt 9, pushing the lock catch plate 14 tightly to draw the mandrels 7 at the two ends to compress the workpiece.

The bridge plate 5 is mounted on the upper plane of the connecting plate 6 through a phi 12 cylindrical pin 4 and an M10X 40 hexagon socket head cap screw 16. The positioning pin 2 is matched with the center holes of the index plate 15 and the tailstock 1 and is fixed in a side threaded hole of the connecting plate 6 by using an M10X 45 hexagon socket head cap screw 3. And a cylindrical pin 18 with the diameter of 12 multiplied by 38 is arranged in a side hole of the connecting plate 6, and the cylindrical pin 18 is inserted into a T-shaped groove of the tailstock 1 and the index plate 15 to limit the relative rotation freedom degree of the connecting plate 6, the index plate 15 and the tailstock 1 around an X axis. The standard T-shaped block 17 is arranged in the T-shaped grooves of the tailstock 1 and the index plate 15, and the M10X 55 hexagon socket head cap screw 19 passes through the countersunk hole on the connecting plate 6 to be connected with the T-shaped block 17 through a thread pair.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. Hydraulic motor sloping cam plate processing anchor clamps in groups, its characterized in that: comprises a positioning device; the positioning device comprises a bridge plate (5), an inclined plane positioning seat (8), a mandrel (7) and a positioning block (20); the inclined plane positioning seat (8) is attached to the top of the bridge plate (5); the inclined plane area of the inclined plane positioning seat (8) is correspondingly attached to the inclined plane on the workpiece (25); the inclined plane positioning seats (8) are distributed in a central symmetry mode relative to the center of the bridge plate (5); the positioning blocks (20) are arranged among the inclined plane positioning seats (8); a positioning hole is arranged on the inclined plane positioning seat (8) in a penetrating way; the bridge plate (5) is provided with a plurality of through holes; the upper end of the mandrel (7) is clamped in a reserved hole of the workpiece (25); the positioning block (20) is attached to and contacted with the side surface of the workpiece (25); the lower end of the mandrel (7) sequentially penetrates through the reserved hole position, the positioning hole and the through hole in the workpiece (25) and then extends to the bottom of the bridge plate (5).

2. The hydraulic motor swash plate machining grouping jig of claim 1, characterized in that: and a V-shaped opening is formed in the side surface of the positioning block (20), and the V-shaped opening is matched with the workpiece (25) in a clamping manner.

3. The hydraulic motor swash plate machining grouping jig of claim 1, characterized in that: the device also comprises a pressing device; the pressing device comprises a jacking bolt (9); the bridge plate (5) is provided with a threaded hole; the tightening bolt (9) is matched and penetrates through the threaded hole; a spacer bush (10) is arranged at the front end shaft shoulder of the puller bolt (9); the spacer bush (10) is sleeved and connected with a pushing and locking plate (14); the pushing locking plate (14) is connected with the lower end of the mandrel (7).

4. The hydraulic motor swash plate machining grouping jig of claim 3, characterized in that: the pushing locking plate (14) freely rotates around the spacer bush (10); the lower end of the mandrel (7) is provided with a neck groove; openings are arranged at two ends of the pushing locking plate (14); the opening is correspondingly clamped with the neck groove.

5. The hydraulic motor swash plate machining grouping jig of claim 1, characterized in that: the device also comprises a rotating mechanism; the rotating mechanism comprises a connecting plate (6) and an index plate (15); the bridge plate (5) is connected with the upper surface of the connecting plate (6); the connecting plate (6) is connected with the dividing disc (15); the rotating indexing disc (15) drives the bridge plate (5) to synchronously rotate.

6. The hydraulic motor swash plate machining grouping jig of claim 5, wherein: the rotating mechanism further comprises a tailstock (1); one side of the index plate (15), which is back to the connecting plate (6), is in rotating fit with the tailstock (1); a cylindrical pin (18) is arranged between the tailstock (1) and the index plate (15); the cylindrical pin (18) is fitted into the index plate (15) to restrict the rotational degree of freedom.