Test fixtures and test equipment

Abstract

This utility model relates to the field of lead screw manufacturing technology, specifically to a testing fixture and testing equipment. The testing fixture includes a first part and a second part, which are detachably connected. The first part has a first receiving portion, and the second part has a second receiving portion. The first and second receiving portions, when connected, together form a mounting portion for assembling the component under test. This testing fixture, applied to testing equipment, has a simple structure and is easy to assemble and disassemble, thereby improving testing efficiency. Furthermore, it enhances the installation stability of the component under test, reducing its movement and thus improving testing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of lead screw manufacturing technology, and more specifically, to a testing fixture and testing equipment. Background Technology

[0002] Reverse planetary roller screws, as high-precision, high-torque-density actuators, are widely used in humanoid robot arm actuators due to their small size and high load capacity. To accurately measure the efficiency of reverse planetary roller screws under specific operating conditions, they require specific fixtures mounted on a test bench for testing. However, existing fixtures suffer from difficulties in disassembly and assembly, and are prone to axial movement, leading to significant deviations in the final test results. Utility Model Content

[0003] The purpose of this utility model is to provide a testing fixture and testing equipment with a simple structure and convenient assembly and disassembly, thereby improving testing efficiency. Moreover, it can improve the installation stability of the component under test, thereby reducing its movement and improving the accuracy of the test.

[0004] The embodiments of this utility model can be implemented as follows: In a first aspect, the present invention provides a testing fixture, which includes a first part and a second part, the first part and the second part being detachably connected; the first part is provided with a first receiving part, and the second part is provided with a second receiving part; The first and second accommodating portions are used to form a mounting portion for assembling the component to be tested when the first and second parts are connected.

[0005] In an optional implementation, the test fixture is used to assemble the planetary ball screw; The first receiving portion includes a first receiving groove that extends through the test fixture along the thickness direction of the test fixture and a first limiting groove disposed at the bottom of the first receiving groove. The second receiving part includes a second receiving groove that penetrates the test fixture along the thickness direction of the test fixture and a second limiting groove disposed at the bottom of the second receiving groove. The first receiving groove and the second receiving groove are used to mate with the outer peripheral surface of the planetary ball screw, and the first limiting groove and the second limiting groove are used to mate with the limiting block on the outer periphery of the planetary ball screw.

[0006] In an optional embodiment, the first split is provided with two first connecting portions that protrude outward along the radial direction of the first receiving groove, and the first connecting portions are provided with a plurality of first connecting holes. The second part is provided with two second connecting parts that protrude outward along the radial direction of the second receiving groove, and the second connecting parts are provided with a plurality of second connecting holes; Each first connecting hole corresponds to a second connecting hole, so that the same first connector can be installed together; the first connector is used to connect the first split body and the second split body.

[0007] In an optional embodiment, the outer periphery of the limiting block is provided with at least one flat surface; the bottom of at least one of the first limiting groove and the second limiting groove is a limiting plane that mates with the flat surface.

[0008] In an optional embodiment, the bottom of the first limiting groove and the second limiting groove are respectively provided with a first limiting plane and a second limiting plane, and the first limiting plane is parallel to the second limiting plane.

[0009] In an optional embodiment, the first limiting groove and the second limiting groove are rectangular grooves, and the bottoms of the first limiting groove and the second limiting groove are parallel.

[0010] In an optional embodiment, along the axial direction of the first receiving groove, a first positioning boss and a second positioning boss are respectively provided on the same side of the first split and the second split, and both the first positioning boss and the second positioning boss are used to cooperate with the positioning holes of the platform flange.

[0011] In an optional embodiment, both the first positioning boss and the second positioning boss are arranged around the axis of the first receiving groove; a limiting platform is protruding from one side of the first or second split body, and the limiting platform is used to cooperate with the positioning hole of the frame flange.

[0012] In an optional embodiment, both the first and second parts are provided with a plurality of first fixing holes and a plurality of second fixing holes. The first fixing holes and the second fixing holes are spaced apart around the axis of the first receiving groove and are used to install a second connecting member that is fixedly connected to the platform flange.

[0013] Secondly, this utility model provides a testing device, which includes a test bench and the aforementioned testing fixture; The test fixture is used to mount the component under test and is connected to the test bench.

[0014] The beneficial effects of the testing fixtures and testing equipment provided in this embodiment of the present invention include: This test fixture is applied to the test equipment and its function is to test the component under test. It includes a first part and a second part, which are detachably connected. The first and second receiving parts are used to form a mounting part for assembling the component under test when the first and second parts are connected. Thus, by using this setting, the installation of the fixture and the component under test can be simplified, as well as the disassembly after the component under test is tested, thereby improving the efficiency of the test. Furthermore, during the assembly of the component under test with the tooling, the first and second parts are assembled into a mounting part, and the component under test is fitted with the mounting part. This method improves the stability of the component under test during the testing process, reduces its movement, and thus improves the accuracy of the test. In summary, this testing fixture has a simple structure and is easy to assemble and disassemble, which improves testing efficiency. It also improves the installation stability of the component under test, thereby reducing its movement and improving the accuracy of the test. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the test fixture provided in this embodiment; Figure 2 This is a cross-sectional view of the test fixture provided in this embodiment; Figure 3 This is a schematic diagram of the structure of the first component provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the second component provided in this embodiment; Figure 5 This is a schematic diagram showing the connection between the test fixture and the bench flange provided in this embodiment; Figure 6 This is an exploded view of the test fixture and bench flange provided in this embodiment.

[0017] Icons: 100-Test fixture; 110-First split part; 120-Second split part; 111-First receiving part; 121-Second receiving part; 101-Mounting part; 112-First receiving groove; 113-First limiting groove; 122-Second receiving groove; 123-Second limiting groove; 114-First connecting part; 115-First connecting hole; 124-Second connecting part; 125-Second connecting hole; 102-Limiting plane; 116-First limiting plane; 126-Second limiting plane; 117-First positioning boss; 127-Second positioning boss; 118-Limiting platform; 119-First fixing hole; 128-Second fixing hole; 211-Rack flange. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0024] Please refer to Figure 1 This embodiment provides a test fixture 100, which includes a first part 110 and a second part 120, which are detachably connected; the first part 110 is provided with a first receiving portion 111, and the second part 120 is provided with a second receiving portion 121. The first receiving portion 111 and the second receiving portion 121 are used to jointly form the mounting portion 101 for assembling the component to be tested when the first part 110 and the second part 120 are connected.

[0025] Please refer to Figure 1 The working principle of the testing fixture 100 is as follows: It should be noted that in this embodiment, the test fixture 100 is used as an example for testing planetary roller screws. That is, the component to be tested in this embodiment is a planetary roller screw, and the planetary roller screw in this embodiment is a reverse planetary roller screw. In other embodiments of this utility model, it can also be applied to the testing of precision devices such as reducers, depending on the requirements. The test fixture 100 is applied to the test equipment and its function is to test the planetary ball screw. It includes a first part 110 and a second part 120, which are detachably connected. The first receiving part 111 and the second receiving part 121 are used to form a mounting part 101 for assembling the planetary ball screw when the first part 110 and the second part 120 are connected. Thus, by setting it up in this way, the installation of the fixture and the planetary ball screw to be tested can be simplified, as well as the disassembly after the planetary ball screw test is completed, thereby improving the efficiency of the test. Furthermore, in the process of assembling the planetary ball screw with the tooling, the first split part 110 and the second split part 120 are assembled into the mounting part 101, and the planetary ball screw is fitted with the mounting part 101. In this way, the planetary ball screw can be installed and fitted with the tooling, thereby improving the stability of the planetary ball screw during the testing process, reducing its axial movement, and thus improving the accuracy of the test. In summary, the test fixture 100 has a simple structure and is easy to assemble and disassemble, which improves testing efficiency. It also improves the installation stability of the planetary ball screw under test, thereby reducing its axial movement and improving the accuracy of the test.

[0026] It should be noted that when configuring the first receiving portion 111 and the second receiving portion 121, their function is to facilitate the molding of the mounting portion 101 through the detachable structural design of the first split portion 110 and the second split portion 120, thereby facilitating the assembly and disassembly of the planetary roller screw to be tested. In this embodiment, the test fixture 100 is used to assemble the planetary ball screw for testing, and the mounting portion 101 is used to assemble the planetary ball screw. Furthermore, when configuring the first receiving portion 111 and the second receiving portion 121, to ensure that the molded mounting portion 101 can be adapted to the planetary roller screw, please refer to... Figures 1-4 The first receiving portion 111 includes a first receiving groove 112 that penetrates the test fixture 100 along the thickness direction of the test fixture 100 and a first limiting groove 113 disposed at the bottom of the first receiving groove 112; the second receiving portion 121 includes a second receiving groove 122 that penetrates the test fixture 100 along the thickness direction of the test fixture 100 and a second limiting groove 123 disposed at the bottom of the second receiving groove 122. The first receiving groove 112 and the second receiving groove 122 are used to mate with the outer peripheral surface of the planetary ball screw, and the first limiting groove 113 and the second limiting groove 123 are used to mate with the limiting block on the outer periphery of the planetary ball screw.

[0027] Therefore, through the above structural design, the first receiving groove 112 and the second receiving groove 122 can cooperate with the outer peripheral surface of the planetary ball screw after the first part 110 and the second part 120 are assembled, thereby improving the installation stability of the planetary ball screw. Furthermore, through the cooperation of the first limiting groove 113 and the second limiting groove 123 with the limiting block on the outer periphery of the planetary ball screw, the planetary ball screw can be limited in the axial and radial directions, thereby preventing the planetary ball screw from moving during installation and testing, and improving the accuracy of testing.

[0028] To improve assembly efficiency when assembling the first part 110 and the second part 120, the first part 110 is provided with two first connecting portions 114 protruding outward along the radial direction of the first receiving groove 112, and the first connecting portions 114 are provided with a plurality of first connecting holes 115; the second part 120 is provided with two second connecting portions 124 protruding outward along the radial direction of the second receiving groove 122, and the second connecting portions 124 are provided with a plurality of second connecting holes 125; wherein, each first connecting hole 115 corresponds to one second connecting hole 125, so as to jointly install the same first connector; the first connector is used to connect the first part 110 and the second part 120. Therefore, the assembly of the first part 110 and the second part 120 can be completed by installing the first connector into the corresponding first connecting hole 115 and second connecting hole 125. Moreover, this arrangement causes the first connecting part 114 and the second connecting part 124 to protrude radially outward, so that the first connecting part 114, the second connecting part 124 and the first connector are kept away from the planetary roller screw, thereby avoiding interference or influence between the first connector and the planetary roller screw, and thus improving the convenience of disassembly, assembly and testing.

[0029] Please refer to Figures 1-4Based on the first receiving portion 111 and the second receiving portion 121, which include the first limiting groove 113 and the second limiting groove 123, since the outer periphery of the limiting block is provided with at least one flat surface, the bottom of at least one of the first limiting groove 113 and the second limiting groove 123 is a limiting plane 102 that mates with the flat surface. That is, by mates with the flat surface, the limiting plane 102 can form a surface contact, thereby achieving the limiting function. In other embodiments of this utility model, the bottom surfaces of the first limiting groove 113 and the second limiting groove 123 may not be flat. That is, the shapes of the first limiting groove 113 and the second limiting groove 123 can be adapted to the shape of the limiting block to achieve the positioning and limiting functions.

[0030] Furthermore, to improve installation efficiency during planetary roller screw assembly, the bottoms of the first limiting groove 113 and the second limiting groove 123 are respectively provided with a first limiting plane 116 and a second limiting plane 126, with the first limiting plane 116 and the second limiting plane 126 being parallel. This allows the flat surface to mate with either the first limiting plane 116 or the second limiting plane 126 for positioning and limiting.

[0031] Therefore, when the bottom of the first limiting groove 113 and the second limiting groove 123 are respectively provided with the first limiting plane 116 and the second limiting plane 126, the sidewalls of the first limiting groove 113 and the second limiting groove 123 can be set as one or more continuous flat surfaces. This setting makes the first limiting groove 113 and the second limiting groove 123 form rectangular grooves or trapezoidal grooves, etc., so that they can adapt to the case where the outer periphery of the limiting block is configured with multiple flat surfaces. Based on this structure, the bottom and side of the first limiting groove 113 and the second limiting groove 123 are both flat surfaces, which can adapt to the case where the limiting block is a rectangle or other polygonal shape. Here, taking the limiting block as a rectangle as an example, the first limiting groove 113 and the second limiting groove 123 can be set as rectangular grooves, and the bottoms of the first limiting groove 113 and the second limiting groove 123 are parallel.

[0032] In addition, when the bottom of the first limiting groove 113 and the second limiting groove 123 are respectively provided with a first limiting plane 116 and a second limiting plane 126, the sidewalls of the first limiting groove 113 and the second limiting groove 123 can also be set as arc-shaped surfaces.

[0033] It should be noted that when configuring the sidewalls of the first limiting groove 113 and the second limiting groove 123, the above-mentioned flat surface setting method can be adopted, the curved surface setting method can be adopted, or the flat surface and curved surface setting method can be adopted simultaneously.

[0034] Further, please refer to Figures 1-6In the process of testing the planetary roller screw, the test fixture 100 is installed on the test bench flange 211 for testing. Based on this, in order to improve its positioning accuracy, it is necessary to position the test fixture 100 on the test bench flange 211. Therefore, along the axial direction of the first receiving groove 112, the first part 110 and the second part 120 are respectively provided on the same side, with a first positioning boss 117 and a second positioning boss 127. The first positioning boss 117 and the second positioning boss 127 are both used to cooperate with the positioning holes of the test bench flange 211. Furthermore, when both the first positioning boss 117 and the second positioning boss 127 are arranged around the axis of the first receiving groove 112, i.e., in the case of a semi-circular platform, a limiting platform 118 can also be provided on one side of the first split body 110 or the second split body 120. The limiting platform 118 is used to cooperate with the positioning hole of the bench flange 211. Thus, the test fixture 100 can be positioned and limited on the bench flange 211, thereby improving the positioning accuracy of the test fixture 100 and the bench flange 211.

[0035] To fix the test fixture 100 to the bench flange 211, both the first part 110 and the second part 120 are provided with a plurality of first fixing holes 119 and a plurality of second fixing holes 128. The first fixing holes 119 and the second fixing holes 128 are spaced apart around the axis of the first receiving groove 112 and are used to install second connecting parts that are fixedly connected to the bench flange 211. Thus, the test fixture 100 can be fixed to the bench flange 211 by the plurality of second connecting parts.

[0036] It should be noted that the first and second connecting parts described above can be bolted connections.

[0037] Based on the above, please refer to Figures 1-6 This embodiment also provides a testing device, which includes a test bench and the aforementioned testing fixture 100; The test fixture 100 is used to install the component under test. In this embodiment, the component under test is a planetary ball screw. The test fixture 100 is connected to the test bench.

[0038] This testing equipment uses the aforementioned testing fixture 100 to test planetary ball screws, thereby improving testing efficiency and enhancing the installation stability of the planetary ball screw under test, thus reducing its axial movement and improving testing accuracy.

[0039] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A testing fixture, characterized in that: The test fixture (100) includes a first part (110) and a second part (120), the first part (110) and the second part (120) being detachably connected; the first part (110) is provided with a first receiving part (111), and the second part (120) is provided with a second receiving part (121). The first receiving portion (111) and the second receiving portion (121) are used to jointly form a mounting portion (101) for assembling the component to be tested when the first part (110) and the second part (120) are connected.

2. The testing fixture according to claim 1, characterized in that: The test fixture is used to assemble the planetary ball screw, and the mounting part (101) is used to assemble the planetary ball screw. The first receiving portion (111) includes a first receiving groove (112) that penetrates the test fixture along the thickness direction of the test fixture and a first limiting groove (113) disposed at the bottom of the first receiving groove (112). The second receiving portion (121) includes a second receiving groove (122) that penetrates the test fixture along the thickness direction of the test fixture and a second limiting groove (123) disposed at the bottom of the second receiving groove (122). The first receiving groove (112) and the second receiving groove (122) are used to cooperate with the outer peripheral surface of the planetary ball screw, and the first limiting groove (113) and the second limiting groove (123) are used to cooperate with the limiting block on the outer periphery of the planetary ball screw.

3. The testing fixture according to claim 2, characterized in that: The first split body (110) is provided with two first connecting parts (114) that protrude outward along the radial direction of the first receiving groove (112), and the first connecting parts (114) are provided with a plurality of first connecting holes (115). The second split (120) is provided with two second connecting portions (124) that protrude outward along the radial direction of the second receiving groove (122), and the second connecting portions (124) are provided with a plurality of second connecting holes (125). Each of the first connecting holes (115) corresponds to a second connecting hole (125) for mounting the same first connector; the first connector is used to connect the first split body (110) and the second split body (120).

4. The testing fixture according to claim 2, characterized in that: The outer periphery of the limiting block is provided with at least one flat surface; the bottom of at least one of the first limiting groove (113) and the second limiting groove (123) is a limiting plane (102) that cooperates with the flat surface.

5. The testing fixture according to claim 4, characterized in that: The bottom of the first limiting groove (113) and the second limiting groove (123) are respectively provided with a first limiting plane (116) and a second limiting plane (126), and the first limiting plane (116) and the second limiting plane (126) are parallel.

6. The testing fixture according to claim 4, characterized in that: The first limiting groove (113) and the second limiting groove (123) are rectangular grooves, and the bottoms of the first limiting groove (113) and the second limiting groove (123) are parallel.

7. The test fixture according to any one of claims 1-6, characterized in that: Along the axial direction of the first receiving groove (112), the first part (110) and the second part (120) are respectively provided with a first positioning boss (117) and a second positioning boss (127) on the same side. The first positioning boss (117) and the second positioning boss (127) are both used to cooperate with the positioning hole of the platform flange (211).

8. The test fixture according to claim 7, characterized in that: The first positioning boss (117) and the second positioning boss (127) are both arranged around the axis of the first receiving groove (112); a limiting platform (118) is protruding on one side of the first split body (110) or the second split body (120), and the limiting platform (118) is used to cooperate with the positioning hole of the platform flange (211).

9. The testing fixture according to claim 7, characterized in that: Both the first split body (110) and the second split body (120) are provided with a plurality of first fixing holes (119) and a plurality of second fixing holes (128). The first fixing holes (119) and the second fixing holes (128) are spaced apart around the axis of the first receiving groove (112) and are used to install a second connecting member that is fixedly connected to the platform flange (211).

10. A testing device, characterized in that: The testing equipment includes a test bench and a test fixture (100) as described in any one of claims 1-9. The test fixture (100) is used to install the component to be tested, and the test fixture (100) is connected to the test bench.

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