Inner wall additive machining clamp for steering gear stator

Abstract

The utility model relates to the technical field of laser beam machining, in particular to an inner wall additive machining clamp for a steering gear stator, the steering gear stator comprises a gear body and a plurality of arc-shaped inner teeth, the arc-shaped inner teeth are circumferentially arranged in an inner cavity of the gear body, and the machining clamp is fixedly clamped on a chuck and comprises a positioning seat. A clamping groove capable of containing a gear body is formed in the positioning seat, a plurality of locking screws are arranged on the periphery of the positioning seat, the locking screws penetrate through the positioning seat and abut against the outer wall of the gear body, the locking screws are ball screws, each ball screw is composed of a spring, a steel ball and a shell, and the steel balls are arranged on the groove wall of the clamping groove through the springs. According to the inner wall additive machining clamp, the positioning base matched with the gear body is arranged, the ball screws with the elastic locking function are arranged on the periphery of the positioning base to position and elastically clamp the gear body, direct disassembly can be achieved, and then the whole positioning base clamping a steering gear stator is installed on a machining chuck.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser beam processing technical field especially is related to a kind of inner wall additive processing clamps for diverter stator. BACKGROUND

[0002] The diverter is a group of gear mechanisms for completing rotation motion to linear motion (or approximate linear motion), and is also a speed reduction transmission device in the steering system. The function of the diverter is to increase the force transmitted to the steering transmission mechanism by the steering wheel and change the transmission direction of the force. The hydraulic diverter is a full hydraulic diverter of a follow-up rotary valve and a set of cycloid hydraulic diverter stator and rotor, which is widely used in low-speed heavy-load vehicles such as agricultural machinery, marine machinery, garden machinery, road maintenance machinery, forestry machinery, engineering machinery and mining machinery. The driver can control a larger steering force with a smaller steering force through it. The cycloid hydraulic diverter stator is an important part of the cycloid hydraulic diverter, which is combined with the rotor to cooperate, can play the role of metering motor during power steering, ensure that the oil amount flowing into the steering cylinder is proportional to the steering wheel angle, and is equivalent to a manual oil pump during manual steering.

[0003] The diverter stator includes a gear body and a plurality of circular-arc inner teeth, the circular-arc inner teeth are located in the inner cavity of the gear body, the gear body and the circular-arc inner teeth are both made of cold extrusion forging process, and additive manufacturing is needed for the circular-arc inner teeth of the inner cavity (such as the red part in the figure Figure 1 The red part is the circular-arc inner teeth 12 to be processed), so the features of the inner cavity of the stator cannot be used for positioning, and only the outer circle of the stator can be clamped. Direct clamping of the outer circle cannot achieve accurate and repeated positioning during batch processing, and repeated positioning is needed each time until the best state, which seriously affects the processing efficiency of the diverter stator. UTILITY MODEL CONTENTS

[0004] In order to solve the problem that the existing clamp clamps the outer circle of the stator and needs repeated positioning and has poor clamping accuracy, the utility model provides an inner wall additive manufacturing clamp for diverter stator, which positions the gear body by setting a positioning seat matched with the gear body, and setting wave bead screws with elastic locking function around the positioning seat, and then the positioning seat clamping the diverter stator is clamped on the machining chuck.

[0005] The utility model provides a kind of for the inner wall of steering gear stator Additive Processing Clamps, steering gear stator includes gear body and several circular arc internal tooth, several circular arc internal tooth circumferentially be set in the inner chamber of gear body, processing clamp is fixedly clamped on chuck, processing clamp includes locating seat, locating seat is opened in and can accommodate the clamping groove of gear body, locating seat periphery is provided with several locking screws, locking screw is passed through locating seat and the outer wall of gear body placed in clamping groove is resisted. By circumferentially set locking screw, the stator part placed in locating seat is stably clamped.

[0006] Further, the locking screw is a wave bead screw, which is composed of a spring, a steel ball and a shell. The shell is screwed on the locating seat, and the steel ball is arranged on the groove wall of the clamping groove by the spring. The elastic steel ball is used to automatically position and clamp the gear body, so that the operation is convenient and the stability is good.

[0007] Further, the side, away from the clamping groove, of the locating seat is provided with a chuck. The locating seat is fixedly clamped on the chuck by the chuck. The chuck is fixedly connected with the locating seat by bolts. The processing chuck only needs to clamp the chuck.

[0008] Further, notches are symmetrically arranged on both sides of the locating seat, and the notches are communicated with the clamping groove. The stator part can be conveniently taken out and placed in by the notches.

[0009] Further, the utility model also includes an auxiliary clamping block. The auxiliary clamping block is placed in the inner cavity of the gear body, and a protrusion is arranged on the periphery of the auxiliary clamping block. The protrusion can be placed between two adjacent circular arc internal teeth. The auxiliary clamping block can ensure that the gear body is clamped in place.

[0010] Further, a first positioning cylinder is arranged in the center of the side, close to the clamping groove, of the auxiliary clamping block, and a first positioning hole is arranged in the center of the locating seat. The first positioning cylinder and the first positioning hole are matched to realize the preliminary positioning of the gear body.

[0011] Further, a second positioning cylinder is also arranged on the side, close to the clamping groove, of the auxiliary clamping block. The second positioning cylinder is arranged on the periphery of the first positioning cylinder. A waist-shaped guide hole is arranged on the locating seat for the second positioning cylinder to extend into. A second positioning hole is arranged on the chuck corresponding to the waist-shaped guide hole. The length of the second positioning cylinder is less than that of the first positioning cylinder. The second positioning cylinder and the second positioning hole are matched to realize secondary positioning and complete the clamping of the part.

[0012] Further, a clamping rod is arranged on the side, away from the clamping groove, of the auxiliary clamping block. The clamping rod is T-shaped. A T-shaped handle is arranged on the auxiliary clamping block to facilitate the rotation operation of the auxiliary clamping block.

[0013] The utility model has the beneficial effects that:

[0014] The utility model provides a kind of for the inner wall of steering gear stator Additive Processing Clamps, steering gear stator parts are elastically clamped by wave bead screw being circumferentially arranged in locating seat, can directly install and disassemble, it is more convenient to operate;By the cooperation of auxiliary positioning block and clamping rod, part is inserted into clamping groove, it can be guaranteed that steering gear stator part is clamped in place. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor;

[0016] Figure 1 It is the first perspective view of processing fixture explosion diagram;

[0017] Figure 2 It is the second perspective view of processing fixture explosion diagram;

[0018] Figure 3 It is the assembly drawing of processing fixture;

[0019] Figure 4 It is the inner cavity processing surface schematic view of steering gear stator;

[0020] Figure 1. steering gear stator, 11. gear body, 12. circular arc internal tooth, 2. locating seat, 21. clamping groove, 22. wave bead screw, 23. notch, 24. first positioning hole, 25. waist-shaped guide hole, 3. chuck, 31. second positioning hole, 4. chuck, 5. auxiliary clamping block, 51. protrusion, 52. first positioning cylinder, 53. second positioning cylinder, 6. clamping rod. DETAILED DESCRIPTION

[0021] The technical solutions of the utility model will be described clearly and completely below in conjunction with the drawings, and obviously, the described embodiments are part of the embodiments of the utility model, not all embodiments.

[0022] Design a kind of for the inner wall of steering gear stator Additive Processing Clamps, as Figure 4 Shown, steering gear stator 1 includes gear body 11 and several circular arc internal tooth 12, several circular arc internal tooth 12 circumferentially set in the inner cavity of gear body 11, need to carry out additive processing to the red surface in Figure 4 As Figure 3As shown, the machining clamp is fixedly clamped on the chuck 4, and the machining clamp comprises a positioning seat 2, a clamping groove 21 capable of accommodating the gear body 11 is formed in the positioning seat 2, and a plurality of locking screws are arranged on the periphery of the positioning seat 2 and abut against the outer wall of the gear body 11 placed in the clamping groove 21. Among them, the locking screw is a wave bead screw 22, which is composed of a spring, a steel ball and a shell. The shell is screwed on the positioning seat 2, the steel ball is arranged on the groove wall of the clamping groove 21 through the spring, the shell is provided with a cavity capable of accommodating the spring, the steel ball is arranged in the cavity through the spring and the head end of the steel ball extends out of the cavity, the outer surface of the shell is provided with a threaded segment, and the positioning seat 2 is provided with an internal thread hole matched with the threaded segment around. When additive machining is performed, the steering device stator 1 is directly pressed into the positioning seat 2, the outer wall of the gear body 11 elastically abuts against the wave bead screw, and stable clamping of the part is completed.

[0023] In order to facilitate the installation of the clamp into the clamping jaw of the machining chuck 4, the side of the positioning seat 2 away from the clamping groove 21 is provided with a chuck 3, and the positioning seat 2 is fixedly clamped on the chuck 4 through the chuck 3. The diameter of the chuck 3 is smaller than that of the positioning seat 2, and the chuck 3 can be integrally formed with the positioning seat 2 or can be detachably connected through bolts.

[0024] In order to facilitate the taking and placing of the steering device stator 1, the positioning seat 2 is symmetrically provided with notches 23 on both sides, and the notches 23 are communicated with the clamping groove 21. The part of the steering device stator 1 placed in the clamping groove 21 is conveniently pried out from the position of the notch 23.

[0025] As shown in Figure 1 and 2 In order to ensure that the part is clamped in place, an auxiliary clamping block 5 is further included, the auxiliary clamping block 5 is placed in the inner cavity of the gear body 11, the auxiliary clamping block 5 is provided with a protrusion 51 on the periphery, and the protrusion 51 can be placed between the two adjacent arc-shaped internal teeth 12. The auxiliary clamping block 5 is clamped in the inner cavity of the steering device stator 1 through the protrusion 51 on the periphery thereof.

[0026] A first positioning cylinder 52 is formed in the center of the side of the auxiliary clamping block 5 close to the clamping groove 21, and a first positioning hole 24 capable of allowing the first positioning cylinder 52 to extend into is arranged in the center of the positioning seat 2. When the first positioning cylinder 52 is inserted into the first positioning hole 24, the concentricity of the gear body 11 and the positioning seat 1 is ensured.

[0027] The auxiliary clamping block 5 is further provided with a second positioning cylinder 53 on the side close to the clamping groove 21, the second positioning cylinder 53 is arranged outside the first positioning cylinder 52, the positioning seat 2 is provided with a waist-shaped guide hole 25 for the second positioning cylinder 53 to extend into, the chuck 3 is provided with a second positioning hole 31 corresponding to the waist-shaped guide hole 25, and the length of the second positioning cylinder 53 is less than that of the first positioning cylinder 52. The second positioning cylinder 53 is first inserted into the waist-shaped guide hole 35 and rotated to be inserted into the second positioning hole 31 along the waist-shaped guide hole 35, at this time, it is ensured that the part has been completely placed into the clamping groove 21 of the positioning seat 2. In order to facilitate the rotation of the auxiliary clamping block 5, the auxiliary clamping block 5 is provided with a clamping rod 6 away from the clamping groove 21, and the clamping rod 6 is T-shaped.

[0028] The auxiliary clamping block 5 and the T-shaped clamping rod 6 are integrally formed, and the auxiliary clamping block 5 is provided with two positioning cylinders with different lengths at the front end, which cooperate with the positioning seat 2 to position. First, the part is pre-clamped by the wave screw 22 around the positioning seat 2, and then the first positioning hole 24 and the second positioning hole 31 in the positioning seat 2 are used for positioning, the first positioning hole 24 is a circular center hole, the second positioning hole 31 is an eccentric hole, and the waist-shaped guide hole 25 is used for guiding. After the part is installed in the positioning seat 2 and clamped by the wave screw 22, the longer first positioning cylinder 52 is inserted into the first positioning hole 24 in the center of the positioning seat 2 to ensure that the part is concentric with the positioning seat 2, at this time, the second positioning cylinder 53 is placed in the waist-shaped guide hole 25, and then the clamping rod 6 is rotated to drive the auxiliary clamping block 5 to rotate, that is, to drive the part to rotate, so that the shorter second positioning cylinder 53 moves along the waist-shaped guide hole 25 and is inserted into the second positioning hole 31, to ensure that the part is completely inserted into the clamping groove 21, and the clamping of the part is completed.

[0029] The above description is only illustrative but not restrictive for the utility model, and those skilled in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all will fall within the protection scope of the utility model.

Claims

1. A kind of inner wall additive processing clamp for steering gear stator, the steering gear stator (1) includes gear body (11) and several circular arc inner tooth (12), several circular arc inner tooth (12) is circumferentially arranged in the inner cavity of gear body (11), the processing clamp is fixedly clamped on chuck (4), it is characterized in that: The machining clamp comprises a positioning seat (2), a clamping groove (21) for accommodating a gear body (11) is formed in the positioning seat (2), and a plurality of locking screws are arranged on the periphery of the positioning seat (2) and abut against the outer wall of the gear body (11) placed in the clamping groove (21).

2. An inner wall additive manufacturing fixture for a steering gear stator according to claim 1, characterized in that: The locking screw is a wave bead screw (22) which is composed of a spring, a steel bead and a shell, the shell is screwed on the positioning seat (2), and the steel bead is arranged on the groove wall of the clamping groove (21) through the spring.

3. An inner wall additive manufacturing fixture for a steering gear stator according to claim 1, wherein: A chuck (3) is arranged on the side of the positioning seat (2) away from the clamping groove (21), and the positioning seat (2) is fixed and clamped on a chuck (4) through the chuck (3).

4. An inner wall additive manufacturing fixture for a steering gear stator according to claim 1, characterized in that: Symmetrical notches (23) are arranged on the two sides of the positioning seat (2), and the notches (23) are communicated with the clamping groove (21).

5. An inner wall additive manufacturing fixture for a steering gear stator according to claim 3, wherein: An auxiliary clamping block (5) is further arranged in the inner cavity of the gear body (11), and a protrusion (51) is arranged on the periphery of the auxiliary clamping block (5), and the protrusion (51) can be placed between two adjacent arc-shaped inner teeth (12).

6. An inner wall additive machining fixture for a steering gear stator according to claim 5, characterized in that: A first positioning cylinder (52) is formed in the center of the side of the auxiliary clamping block (5) close to the clamping groove (21), and a first positioning hole is arranged in the center of the positioning seat (2) and can be extended into the first positioning cylinder (52).

7. An inner wall additive machining fixture for a steering gear stator according to claim 6, characterized in that: A second positioning cylinder (53) is further arranged on the side of the auxiliary clamping block (5) close to the clamping groove (21), the second positioning cylinder (53) is arranged on the periphery of the first positioning cylinder (52), a waist-shaped guide hole (25) is arranged on the positioning seat (2) and can be extended into the second positioning cylinder (53), a second positioning hole (31) is formed in the chuck (3) corresponding to the waist-shaped guide hole (25), and the length of the second positioning cylinder (53) is smaller than that of the first positioning cylinder (52).

8. An inner wall additive machining fixture for a steering gear stator according to claim 7, characterized in that: A clamping rod (6) is arranged on the side of the auxiliary clamping block (5) away from the clamping groove (21), and the clamping rod (6) is in T shape.

Images