High-precision concentricity detection tool for shell of power steering pump

By designing a vertical machining and testing component and adopting a combined clamping structure of chuck and positioning ring, the problem of unstable clamping in the concentricity testing of the power steering pump housing was solved, achieving stable rotation and high-precision testing of the housing, which is suitable for housings of different sizes.

CN223910258UActive Publication Date: 2026-02-13RUIAN DEYUAN AUTO PARTS CO LTD
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Patent Information

Application Number
CN202520720142.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2026-02-13
Estimated Expiration
2035-04-16

AI Technical Summary

Technical Problem

The existing tooling for testing the concentricity of power steering pump housings lacks an effective clamping structure, which makes the workpiece prone to displacement or shaking during the testing process, affecting the accuracy of the test results and the stability of the equipment.

Method used

A high-precision concentricity testing fixture for a power steering pump housing was designed. The fixture employs a vertical machining and testing component, including a chuck, a positioning ring, a slider, a slide rail, and a multi-axis servo motor. Through the combined clamping structure of the chuck and positioning ring, combined with the power transmission from the power box, belt, and drive shaft, stable clamping and rotation of the housing are achieved. The concentricity is then tested using the testing component at the output end of the servo motor.

Benefits of technology

It achieves stable rotation of the housing, improves the accuracy and efficiency of testing, is applicable to housings of different sizes, reduces the risk of equipment damage, and extends the service life of testing equipment.

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Abstract

The utility model relates to the technical field of concentricity detection devices, in particular to a power steering pump shell high-precision concentricity detection tool which comprises a machining table, a power box is fixed on one side of the top end of the machining table, a sliding rail is fixed on the side wall of the power box, a sliding block is clamped and fixed on the sliding rail, and a positioning block is fixed at the bottom end of the sliding rail. A transmission assembly is fixed to the outer side of the sliding block and comprises a connecting plate fixed to the outer side of the sliding block, a connecting clamping block fixed to the outer side of the connecting plate and a threaded rod arranged at the top end of the connecting clamping block in a sleeving mode, a circular groove is formed in the front end of the positioning block in a penetrating mode, a chuck is fixed to the top end of the positioning block, and the bottom end of the chuck is fixedly connected with a transmission shaft. And the detection assembly structure arranged at the output end of the steering engine can make contact with the outer side of the shell, the rapid detection effect is achieved, and therefore compared with an existing structure, the device is suitable for shell structures of different sizes, and during rotation, the shell is vertically clamped, and the rotation stability of the shell is better.
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Description

TECHNICAL FIELD

[0001] The utility model relates to concentricity detection device technical field, concretely relates to high-precision concentricity detection frock of steering assist pump shell. BACKGROUND

[0002] In the automobile steering system, the steering assist pump plays a vital role, and its performance directly affects the control stability and driving safety of the automobile. The concentricity of the steering assist pump shell is a key indicator for measuring its quality, and has a decisive influence on the working efficiency and service life of the assist pump. If the concentricity deviates, it may cause the assist pump to vibrate, noise, and even shorten its service life, thereby affecting the performance of the entire steering system;

[0003] At present, there are many detection methods for the concentricity of the steering assist pump shell, among which the vertical detection is concerned due to its unique advantages. The vertical detection can fully utilize the gravity to make the measured workpiece naturally sag during the detection process, reducing the deformation caused by the weight of the workpiece itself, thereby effectively improving the accuracy of the detection. At the same time, this detection method is more convenient to operate and observe during the detection process, and can significantly improve the detection efficiency;

[0004] The existing steering assist pump shell concentricity detection frock has many shortcomings. The most prominent problem is the lack of effective clamping structure. During the detection process, due to the lack of reliable clamping structure, the workpiece is easy to displace or shake, which not only affects the accuracy of the detection result, but also may cause the detection process to be interrupted, reducing the detection efficiency. Moreover, unstable clamping may cause certain damage to the detection equipment, increasing the maintenance cost of the equipment. UTILITY MODEL CONTENTS

[0005] Technical problem solved

[0006] In view of the above shortcomings of the prior art, the utility model provides a high-precision concentricity detection frock for the steering assist pump shell, which can effectively solve the problem of lack of effective clamping structure in the prior art.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme:

[0008] The utility model provides a high precision concentricity detection frock of steering assist pump shell, including processing table, the top one side of processing table is fixed with power box, the lateral wall of power box is fixed with slide rail, the slide rail is fixed with the slide block of card setting, the bottom of slide rail is fixed with positioning block, the outside of slide block is fixed with transmission assembly, transmission assembly includes the connecting plate fixed with the outside of slide block, the connecting block fixed with the outside of connecting plate and the threaded rod of sleeve setting in the top of connecting block, the front end of positioning block is penetrated and is set with round groove, and the top of positioning block is fixed with chuck, the bottom of chuck is fixedly connected with transmission shaft, transmission shaft and power end transmission connection in power box, the shell is fixed with the card setting between chuck and connecting block, the other side of the top of processing table is fixed with rudder engine, the output of rudder engine is fixed with detection assembly, the contact end of detection assembly and the outside wall of shell keep contact.

[0009] Further, the bottom side wall of the power box is provided with a groove, and a belt is arranged in the groove, one end of the belt is in transmission connection with the power output end, the other end is fixedly sleeved with a belt pulley, and the middle part of the belt pulley is fixedly connected with the transmission shaft.

[0010] Further, the top of the chuck is provided with a positioning ring, and the shell is arranged outside the chuck positioning ring.

[0011] Further, the top of the power box is provided with a mounting plate, the threaded rod penetrates the middle part of the mounting plate, and a sleeve ring structure is sleeved outside the threaded rod, the sleeve ring structure is fixedly connected with the power box, groove bodies are formed in the upper and lower ends of the connecting block, and bearing structures are arranged in the groove bodies, the inner side wall of the bearing structure is fixedly connected with the side surface of the connecting block, and the top of the threaded rod and the shell is in contact with the side surface.

[0012] Further, the connecting plate and the connecting block are fixedly connected through bolts.

[0013] Further, the rudder engine is a multi-shaft power structure.

[0014] The technical scheme provided by the utility model has the following beneficial effects compared with the known prior art:

[0015] The utility model discloses a vertical processing detection subassembly structure is set up, and the user can place the casing on chuck, and the casing of different inner diameter is fixed through the inside or outside of positioning ring with the chuck structure of having the positioning ring formula, then, realizes power transmission through power box - belt - pulley - transmission shaft - chuck, and the user can press down through the rotation screw rod at the top of casing, and the sleeve ring structure fixed with power box can make the screw rod move vertically, and then drive the movement of connecting clamping block - connecting plate - sliding block, and one end of sliding block is stably slid on the slide rail, and the bottom of connecting clamping block is in close contact with casing, so when the bottom casing rotates, the phenomenon that casing deviates does not occur, and the detection subassembly structure of rudder output end can contact with the outside of casing, and then the surface concentricity is detected, and the rudder structure of double -shaft formula can conveniently contact the outside of casing, and the effect of quick detection is reached, so compared with prior art, the device is suitable for different size casing structure, and when rotating, the casing is clamped vertically, and the rotation stability of casing is better. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced. Obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the structural side view of the utility model;

[0019] Figure 3 It is the structure split diagram of the utility model;

[0020] Figure 4 It is Figure 3 It is the structural schematic diagram of the utility model in A place;

[0021] Figure 5 It is the structural schematic diagram of transmission assembly in the utility model.

[0022] The reference numerals in the drawing represent respectively: 1, processing table;2, power box;21, slide rail;22, positioning block;23, sliding block;24, chuck;25, belt;26, pulley;27, transmission shaft;3, transmission assembly;31, connecting plate;32, screw rod;33, connecting clamping block;4, casing;5, rudder;6, detection assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The utility model will be further described below in combination with the embodiments.

[0025] Embodiment: the high-precision concentricity detection tool for the steering assist pump shell, referring to the attached Figure 1 -attached Figure 5 , including processing platform 1, the top end one side of processing platform 1 is fixed with power box 2, the side wall of power box 2 is fixed with slide rail 21, the slide rail 21 is clamped and fixed with sliding block 23, the bottom of slide rail 21 is fixed with positioning block 22, the outside of sliding block 23 is fixed with transmission assembly 3, transmission assembly 3 includes the connecting plate 31 fixed with the outside of sliding block 23, the connecting block 33 fixed with the outside of connecting plate 31 and the threaded rod 32 sleeved at the top of connecting block 33, the front end of positioning block 22 is penetrated and is set with circular groove, and the top of positioning block 22 is fixed with chuck 24, the bottom of chuck 24 is fixedly connected with transmission shaft 27, transmission shaft 27 is drivingly connected with the power end in power box 2, chuck 24 and connecting block 33 are clamped and fixed with shell 4 between, the top end other side of processing platform 1 is fixed with rudder 5, the output of rudder 5 is fixed with detection assembly 6, the contact end of detection assembly 6 and the outside wall of shell 4 keep contact;

[0026] The bottom end side wall of the power box 2 is provided with a groove, and a belt 25 is arranged in the groove, one end of the belt 25 is in transmission connection with the power output end, the other end is fixedly sleeved with a belt pulley 26, and the middle part of the belt pulley 26 is fixedly connected with a transmission shaft 27; and at the top end of the shell 4, a user can press down through rotating a threaded rod 32, and the sleeve ring structure fixed with the power box 2 can make the threaded rod 32 move vertically, thereby driving the connecting clamping block 33-connecting plate 31-slide block 23 to move, one end of the slide block 23 stably slides on the slide rail 21, so that the bottom of the connecting clamping block 33 is in close contact with the shell 4, so that when the bottom shell 4 rotates, the shell 4 will not be offset, and the detection assembly 6 structure arranged at the output end of the rudder 5 can be in contact with the outer side of the shell 4, thereby detecting the surface concentricity, and the double-shaft rudder 5 structure can facilitate complete contact with the outer side of the shell 4, so that the effect of rapid detection is achieved, so compared with the prior art, the device is suitable for shell 4 structures of different sizes, and when rotating, the shell 4 is vertically clamped, and the rotation stability of the shell 4 is better.

[0027] The top end of the chuck 24 is provided with a positioning ring, and the shell 4 is arranged outside the positioning ring of the chuck 24; the top end of the power box 2 is provided with a mounting plate, the threaded rod 32 penetrates the middle part of the mounting plate, and the outer side of the threaded rod 32 is sleeved with a sleeve ring structure, which is fixedly connected with the power box 2; the upper and lower ends of the connecting clamping block 33 are both provided with grooves, and bearing structures are arranged in the grooves, the inner side wall of the bearing structure is fixedly connected with the side surface of the connecting clamping block 33, and the top end of the threaded rod 32 and the shell 4 is in contact with the side surface and fixed; the connecting plate 31 and the connecting clamping block 33 are fixedly connected through bolts; the rudder 5 is a multi-shaft power structure; by arranging the vertical machining detection assembly 6 structure, the user can place the shell 4 on the chuck 24, and different inner diameters of the shell 4 are clamped and fixed through the inner side or the outer side of the positioning ring of the chuck 24 structure, then power transmission is realized through the power box 2-belt 25-belt pulley 26-transmission shaft 27-chuck 24.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-precision concentricity detection tool for a steering assist pump housing, characterized in that, The utility model provides a kind of processing platform, including processing platform (1), the top end side of the processing platform (1) is fixed with power box (2), the lateral wall of the power box (2) is fixed with slide rail (21), the slide rail (21) is fixed with sliding block (23) on clamping, the bottom of the slide rail (21) is fixed with locating block (22), the outside of the sliding block (23) is fixed with transmission assembly (3), the transmission assembly (3) includes the connecting plate (31) fixed with the outside of sliding block (23), the connecting block (33) fixed with the outside of connecting plate (31) and the threaded rod (32) of sleeve set in the top of connecting block (33), the front end of the locating block (22) is penetrated with circular groove, and chuck (24) is fixed in the top of the locating block (22), the bottom of the chuck (24) is fixedly connected with transmission shaft (27), the transmission shaft (27) is connected with the power end in the power box (2), chuck (24) and connecting block (33) are clamped and fixed with shell (4) between, the top end other side of the processing platform (1) is fixed with rudder (5), the output of the rudder (5) is fixed with detection assembly (6), the contact end of the detection assembly (6) is in contact with the outside wall of shell (4).

2. The high-precision concentricity detection tool for a steering assist pump housing according to claim 1, characterized in that, The bottom lateral wall of the power box (2) is provided with a groove, and a belt (25) is arranged in the groove, one end of the belt (25) is drivingly connected with a power output end, the other end is fixedly sleeved with a belt pulley (26), and the middle part of the belt pulley (26) is fixedly connected with the transmission shaft (27).

3. The high-precision concentricity detection tool for a steering assist pump housing according to claim 1, characterized in that, The top of the chuck (24) is provided with a positioning ring, and the shell (4) is arranged outside the chuck (24) positioning ring.

4. The high-precision concentricity detection tool for a steering assist pump housing according to claim 1, characterized in that, The top of the power box (2) is provided with a mounting plate, the threaded rod (32) penetrates the middle part of the mounting plate, and a sleeve ring structure is sleeved outside the threaded rod (32), the sleeve ring structure is fixedly connected with the power box (2), the upper and lower ends of the connecting block (33) are provided with grooves, and bearing structures are arranged in the grooves, the inner side wall of the bearing structure is fixedly connected with the side surface of the connecting block (33), the top of the threaded rod (32) and the shell (4) is in contact with the side surface.

5. The high-precision concentricity detection tool for a steering assist pump housing according to claim 4, characterized in that, The connecting plate (31) and the connecting block (33) are fixedly connected by bolts.

6. The high-precision concentricity detection tool for a steering assist pump housing according to claim 1, characterized in that, The rudder (5) is a multi-axis power structure.