Clamp for boring spline bottom hole of sliding fork

Abstract

The utility model relates to a sliding fork boring spline bottom hole clamp which comprises a supporting seat, a vertical plate arranged on the supporting seat and a pneumatic clamping finger arranged on the vertical plate and used for clamping a rod portion of a sliding fork, the pneumatic clamping finger is provided with two pneumatic fingers, V-shaped clamping grooves are formed in the opposite faces of the two pneumatic fingers, and a positioning seat is arranged on the supporting seat. The positioning seat is provided with a V-shaped limiting groove used for abutting against the fork portion of the sliding fork, the supporting seat is provided with a lifting mechanism, the lifting mechanism is provided with a pressing plate, the pressing plate is provided with a mounting hole used for allowing the rod portion of the sliding fork to penetrate through, and the lifting mechanism is used for driving the pressing plate to move up and down so that the fork portion of the sliding fork can be pressed or loosened. The fork part can be effectively prevented from shaking during boring, and the boring precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, especially a kind of automobile transmission shaft sliding fork boring spline bottom hole clamp. BACKGROUND

[0002] Automobile transmission shaft sliding fork is located in the middle of transmission shaft assembly, and main structure includes stem and fork part.The main role of sliding fork is: one, transmission torque;Two, with spline shaft fork to form sliding spline pair, when the load of whole vehicle is different, it is used to compensate the length of transmission shaft assembly.

[0003] At present, for the boring spline bottom hole of sliding fork, the fixture for clamping sliding fork is set on boring machine.The existing patent CN202607312U discloses a kind of boring sliding fork spline bottom hole with fixture, including base, fixed mounting frame and automatic centering clamping mechanism are arranged on base, fixed V-shaped block is arranged on fixed mounting frame, movable V-shaped block, which is same in size and shape with fixed V-shaped block, is arranged on automatic centering clamping mechanism, and the openings of fixed V-shaped block and movable V-shaped block are oppositely arranged.The fixture is used, and the stem is clamped by the cooperation of fixed V-shaped block and movable V-shaped block, but the fixture lacks the pressing positioning of fork part, and when boring machining is carried out, the fork part is prone to shaking and trembling due to lack of clamping, which leads to deviation of boring hole or reduction of surface roughness, causing the scrap of parts. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model provides a kind of boring spline bottom hole clamp for sliding fork.

[0005] The utility model discloses the technical scheme that is used to solve the above technical problem is as follows: a kind of boring spline bottom hole clamp for sliding fork, including support seat, vertical plate being set on support seat and the pneumatic clamping finger being set on vertical plate and being used to clamp sliding fork stem, pneumatic clamping finger has two pneumatic fingers, V-shaped clamping groove is arranged on the opposite face of two pneumatic fingers, positioning seat is arranged on support seat, V-shaped limiting slot for being abutted with the fork part of sliding fork is arranged on positioning seat, lifting mechanism is arranged on support seat, pressing plate is arranged on lifting mechanism, and mounting hole for being passed through by the stem of sliding fork is arranged on pressing plate, and lifting mechanism is used to drive pressing plate to move up and down, to realize the pressing or loosening of the fork part of sliding fork.

[0006] As preferred scheme, the support seat and vertical plate are L-shaped, and the support seat and vertical plate are integrally made.

[0007] As preferred scheme, the lifting mechanism includes lifting cylinder, the piston rod end of lifting cylinder is vertically upwards and the end is provided with connecting plate, and the pressing plate is fixed on the upper end of connecting plate.

[0008] As a preferred scheme, the positioning seat is annular, and the four V-shaped limiting grooves are arranged opposite to each other along the circumferential direction of the positioning seat.

[0009] As a preferred scheme, a limiting shaft is slidably arranged on the support seat, a conical limiting portion is arranged on the upper end of the limiting shaft and abuts against the inner side of the fork portion, the conical limiting portion is arranged in the positioning seat, a stop ring is arranged on the lower end of the limiting shaft and abuts against the bottom of the support seat, and a spring is arranged between the conical limiting portion and the support seat and surrounds the outer side of the limiting shaft.

[0010] As a preferred scheme, a circular recess is arranged on the support seat, a guide hole for the limiting shaft to pass through is arranged on the bottom of the circular recess, and the lower end of the spring abuts against the bottom of the circular recess.

[0011] The application has the following beneficial effects: 1. The rod portion of the sliding fork is clamped and fixed by the pneumatic fingers, the V-shaped limiting grooves of the positioning seat are matched with the lifting mechanism and the pressing plate to clamp and fix the fork portion, the fork portion is effectively prevented from shaking during boring, and the boring precision is ensured.

[0012] 2. The conical limiting portion of the limiting shaft abuts against the inner side of the fork portion, the fork portion is prevented from shaking along the radial direction of the rod portion during boring, and the boring precision is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the application;

[0014] Figure 2 It is Figure 1 It is a front view;

[0015] Figure 3 It is Figure 1 It is a sectional view;

[0016] Figure 4 It is a structural schematic view of the sliding fork.

[0017] Marked in the figure: 1, support seat, 2, vertical plate, 3, pneumatic fingers, 31, pneumatic fingers, 4, positioning seat, 41, V-shaped limiting groove, 5, sliding fork, 51, rod portion, 52, fork portion, 53, bottom hole, 6, pressing plate, 61, mounting hole, 7, lifting cylinder, 71, connecting plate, 8, limiting shaft, 81, conical limiting portion, 82, stop ring, 9, spring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] Please refer to Figures 1-3 The utility model discloses a kind of sliding fork boring spline bottom hole clamps, including support seat 1, vertical plate 2 being arranged on support seat 1 and pneumatic gripper 3 being arranged on vertical plate 2 for clamping the rod portion 51 of sliding fork 5, pneumatic gripper 3 has two pneumatic fingers 31, two pneumatic fingers 31 are provided with V-shaped clamping groove on opposite face, positioning seat 4 is provided on support seat 1, positioning seat 4 is provided with V-shaped limiting groove 41 for being resisted with the fork portion 52 of sliding fork 5, lifting mechanism is provided on support seat 1, pressing plate 6 is provided on lifting mechanism, pressing plate 6 is provided with mounting hole 61 for the rod portion 51 of sliding fork 5 to pass through, lifting mechanism is used to drive pressing plate 6 to move up and down, to realize the fork portion 52 of sliding fork 5 to be pressed or loosened.

[0020] Among them, pneumatic gripper 3 includes cylinder, slide rail and clamping jaw;The clamping jaw is composed of two symmetrical sliders mounted on the slide rail, the clamping jaw is connected with the cylinder piston, and the two sliders can be driven by the cylinder to move towards each other along the slide rail. Clamping jaw is pneumatic finger 31, and pneumatic gripper 3 can also use existing parallel pneumatic clamping jaw. Parallel pneumatic clamping jaw is prior art, and this application will not be described in detail. The openings of the two V-shaped clamping grooves are oppositely arranged. The support seat 1 and the vertical plate 2 are L-shaped, and the support seat 1 and the vertical plate 2 are integrally made.

[0021] Specifically, the lifting mechanism includes lifting cylinder 7, the piston rod end of lifting cylinder 7 is vertically upward and the end is provided with connecting plate 71, the pressing plate 6 is fixed on the upper end of the connecting plate 71, the mounting hole 61 is U-shaped, and the mounting hole 61 can also be circular.

[0022] More specifically, the positioning seat 4 is annular, the V-shaped limiting groove 41 is four, the four V-shaped limiting grooves 41 are arranged along the circumferential direction of the positioning seat 4, and the four V-shaped limiting grooves 41 are oppositely arranged. The bottom of V-shaped limiting groove 41 is provided with a groove, and the groove is provided with a locking screw. The positioning seat 4 is fixedly connected with the support seat 1 through the locking screw.

[0023] Further, the support base 1 is slidably provided with a limiting shaft 8, and a conical limiting portion 81 is arranged on the upper end of the limiting shaft 8 and abuts against the inner side of the fork portion 52.

[0024] The conical limiting portion 81 is arranged in the positioning base 4, and a stop ring 82 is arranged on the lower end of the limiting shaft 8 and abuts against the bottom of the support base 1.

[0025] When the application is used, the two pneumatic fingers 31 of the pneumatic fingers 3 clamp the rod portion 51 of the sliding fork 5, the fork portion 52 abuts against the V-shaped limiting groove 41 on the positioning base 4, under the action of the spring 9, the conical limiting portion 81 of the limiting shaft 8 abuts against the inner side of the fork portion 52, so that the fork portion 52 is prevented from shaking along the radial direction of the rod portion 51 during boring, the lifting mechanism drives the pressing plate 6 to move downward, and the fork portion 52 of the sliding fork 5 is pressed on the positioning base 4, so that the rod portion 51 and the fork portion 52 of the sliding fork 5 are effectively limited and fixed, the rod portion 51 and the fork portion 52 are effectively prevented from shaking during boring of the bottom hole 53, and the precision of the bottom hole 53 is ensured.

[0026] Of course, the utility model is not limited to the above-mentioned embodiments, and several other embodiments based on the design concept of the utility model are provided below.

[0027] For example, in other embodiments, the pressing plate 6 is fixed on the upper end of the connecting plate 71 through the fixing bolt, which is different from the above-mentioned embodiments.

[0028] It should be noted that the above embodiments are only used to illustrate the utility model, but the utility model is not limited to the above embodiments, and any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiments all fall within the protection scope of the utility model.

Claims

1. A sliding fork boring spline bottom hole fixture, characterized by, The utility model provides a kind of slide fork clamping device, including support seat (1), set on support seat (1) vertical board (2) and set on vertical board (2) for clamping slide fork (5) stem (51) pneumatic finger (3), pneumatic finger (3) has two pneumatic fingers (31), two pneumatic fingers (31) are provided with V-shaped clamping groove on opposite face, support seat (1) is equipped with positioning seat (4), positioning seat (4) is equipped with V-shaped limiting slot (41) for being abutted with the prong part (52) of slide fork (5), support seat (1) is equipped with lifting mechanism, lifting mechanism is equipped with pressing plate (6) on, pressing plate (6) is equipped with installation hole (61) for the stem (51) of slide fork (5) to pass through, lifting mechanism is used to drive pressing plate (6) to move up and down, to realize the prong part (52) of slide fork (5) is pressed or loosened.

2. A sliding fork boring spline bore fixture according to claim 1, characterized in that: The support seat (1) and the vertical board (2) are L-shaped, and the support seat (1) and the vertical board (2) are integrally formed.

3. The sliding fork boring spline bore fixture of claim 1, wherein: The lifting mechanism includes a lifting cylinder (7), and the piston rod end of the lifting cylinder (7) is vertically upward and provided with a connecting plate (71) at the end.

4. The sliding fork boring spline bore fixture of claim 1 wherein: The positioning seat (4) is annular, and the V-shaped limiting slots (41) are four, which are arranged along the circumferential direction of the positioning seat (4) and oppositely arranged in pairs.

5. A sliding fork boring spline bore fixture according to claim 4, wherein: A limiting shaft (8) is slidably arranged on the support seat (1), and the upper end of the limiting shaft (8) is provided with a conical limiting portion (81) abutting against the inner side of the prong part (52), the conical limiting portion (81) is located in the positioning seat (4), and the lower end of the limiting shaft (8) is provided with a stop ring (82) abutting against the bottom of the support seat (1), and the conical limiting portion (81) and the support seat (1) are provided with a spring (9) sleeved on the outer side of the limiting shaft (8).

6. A sliding fork boring spline bore fixture according to claim 5, wherein: The support seat (1) is provided with a circular recess, and the bottom of the circular recess is provided with a guide hole for the limiting shaft (8) to pass through, and the lower end of the spring (9) abuts against the bottom of the circular recess.

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