Straightness test board for lead screw and guide rod

Abstract

The utility model relates to the technical field of detection, in particular to a lead screw and guide rod straightness test board, which comprises a workbench, a motor mounting plate, a motor, a connecting piece, a bearing support assembly, a sliding table cylinder and a motor sensor assembly, the motor sensor assembly is mounted on a sliding table seat of the sliding table cylinder, the motor is fixed on the motor mounting plate, and the bearing support assembly is fixed on the motor mounting plate. Two bearing supporting assemblies are arranged in the axis direction of the output shaft of the motor, the two ends of the lead screw or the two ends of the guide rod are placed on the corresponding bearing supporting assemblies, the output shaft of the motor is directly connected with the lead screw or the guide rod through a connecting piece, and the two measuring ends of the motor sensor assembly make contact with the surface of the lead screw and the surface of the guide rod respectively. Compared with the prior art, rotation of the lead screw and the guide rod is achieved through the motor and the bearing supporting assembly, the motor sensor assembly is driven to move through the sliding table air cylinder, and the straightness of the lead screw and the guide rod is tested. The lead screw and guide rod testing device is suitable for testing lead screws and guide rods with different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, specifically a test bench for the straightness of lead screws and guide rods. Background Technology

[0002] Currently, the guide rod and lead screw of the solar-powered electric actuator need to be tested to assess whether their straightness meets the design requirements.

[0003] The straightness of the guide rod and lead screw of the electric actuator can be measured manually. However, manual measurement has disadvantages such as low efficiency, poor stability and low accuracy, which cannot meet the testing requirements of solar electric actuators.

[0004] Therefore, it is necessary to design a straightness testing bench for lead screws and guide rods to improve the efficiency, accuracy and stability of straightness testing and meet the testing requirements of solar-powered electric actuators. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a straightness testing bench for lead screws and guide rods to improve the efficiency, accuracy and stability of straightness testing and meet the testing requirements of solar-powered electric actuators.

[0006] To achieve the above objectives, this utility model provides a linearity testing platform for lead screws and guide rods, comprising a worktable, a motor mounting plate, a motor, connectors, bearing support assemblies, a slide cylinder, and a motor sensor assembly. A slide cylinder is mounted in the center of the worktable, and the motor sensor assembly is mounted on the slide base of the slide cylinder. A motor mounting plate is mounted on each of the front and rear sides of the worktable, and the motor is fixed to the motor mounting plate. Two bearing support assemblies are arranged along the axis of the motor output shaft. The two ends of the lead screw or guide rod are placed on the corresponding bearing support assemblies. The motor output shaft is directly connected to the lead screw or guide rod using connectors. The two measuring ends of the motor sensor assembly are in contact with the surfaces of the lead screw and guide rod, respectively.

[0007] The motor mounting plate is installed on the workbench using screw one and locating pin one, and the motor is directly fixed to the motor mounting plate using screw two.

[0008] The connecting components include a positioning adapter plate and an adapter one. The positioning adapter plate is mounted on the motor output shaft using screw three. The adapter one is mounted on the end of the lead screw. The positioning pin two on the end face of the adapter one is inserted into the positioning hole on the end face of the positioning adapter plate.

[0009] The connecting components include a positioning adapter plate and an adapter two. The positioning adapter plate is mounted on the motor output shaft using screw three. An annular connector is sleeved on the end of the guide rod. The adapter two is connected to the annular connector using screw four. The positioning pin three on the end face of the adapter two is inserted into the positioning hole on the end face of the positioning adapter plate.

[0010] The bearing support assembly includes a support plate, five screws, four locating pins, and a ball bearing. The support plate is mounted on the workbench using five screws and four locating pins. The top of the support plate has two ear-shaped structures, and a rotatable ball bearing is mounted on the front side of each ear-shaped structure.

[0011] A lead screw or guide rod is placed between the two ear-shaped structures, and the surface of the ball bearing is in contact with the surface of the lead screw or guide rod.

[0012] After the shoulder bolt passes through the ball bearing, sleeve, and support plate, it is fastened to the nut. Washers are provided between the ball bearing and the sleeve, and between the support plate and the nut.

[0013] The motor sensor assembly includes a connecting plate, a butterfly motor, a coupling, and a displacement sensor. The connecting plate is mounted on a slide base, and two butterfly motors are mounted on the top sides of the connecting plate. The shafts of the butterfly motors are connected to the lower end of the coupling, and a displacement sensor is mounted on the upper end of the coupling. The measuring end of the displacement sensor is located on the side close to the lead screw or guide rod.

[0014] The connecting plate and the slide base, the butterfly motor and the connecting plate, and the butterfly motor and the coupling are fixed with six screws, and the coupling and the displacement sensor are fixed with two nuts.

[0015] Two sets of tri-color lights are installed on the workbench.

[0016] Compared with existing technologies, this invention designs a lead screw and guide rod straightness testing platform. Through a motor and bearing support assembly, the lead screw and guide rod are rotated. A slide cylinder drives the motor and sensor assembly to move, thus achieving the straightness test of the lead screw and guide rod. This invention is suitable for testing lead screws and guide rods of different thicknesses and has the advantages of simple operation, high efficiency and accuracy, and good stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram illustrating the installation of the motor, motor mounting plate, and positioning adapter plate of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the lead screw and adapter of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the guide rod and adapter of this utility model.

[0021] Figure 5 This is an exploded view of the bearing support assembly of this utility model.

[0022] Figure 6 This is an isometric view of the bearing support assembly of this utility model.

[0023] Figure 7 This is an exploded view of the motor sensor assembly of this utility model.

[0024] Figure 8 This is an isometric view of the motor sensor assembly of this utility model. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] See Figure 1 This utility model is a linearity testing platform for lead screws and guide rods, including a worktable, a motor mounting plate, a motor, a connector, a bearing support assembly, a slide cylinder, and a motor sensor assembly. A slide cylinder 7 is installed in the center of the worktable 1. A motor sensor assembly 8 is installed on the slide seat of the slide cylinder 7. A motor mounting plate 2 is installed on the worktable 1 on both the front and rear sides of the slide cylinder 7. The motor 3 is fixed on the motor mounting plate 2. Two bearing support assemblies 4 are arranged along the axis of the output shaft of the motor 3. The two ends of the lead screw 5 or the two ends of the guide rod 6 are placed on the corresponding bearing support assemblies 4. The output shaft of the motor 3 is directly connected to the lead screw 5 or the guide rod 6 by a connector. The two measuring ends of the motor sensor assembly 8 are in contact with the surfaces of the lead screw 5 and the guide rod 6, respectively.

[0027] See Figure 2 The motor mounting plate 2 is mounted on the workbench 1 using screw 21 and positioning pin 22. The motor 3 is directly fixed to the motor mounting plate 2 using screw 23.

[0028] See Figure 2 , Figure 3 The connecting components include a positioning adapter plate 10 and an adapter 11. The positioning adapter plate 10 is mounted on the output shaft of the motor 3 using screw 3 12. The adapter 11 is mounted on the end of the lead screw 5. The positioning pin 2 111 on the end face of the adapter 11 is inserted into the positioning hole on the end face of the positioning adapter plate 10 to achieve quick positioning and installation of the lead screw 5.

[0029] See Figure 2 , Figure 4The connecting components include a positioning adapter plate 10 and an adapter 2 13. The positioning adapter plate 10 is mounted on the output shaft of the motor 3 using screw 3 12. The end of the guide rod 6 is fitted with an annular connector 14. The adapter 2 13 is connected to the annular connector 14 using screw 4 15. The positioning pin 3 131 on the end face of the adapter 2 13 is inserted into the positioning hole on the end face of the positioning adapter plate 10 to achieve quick positioning and installation of the guide rod 6.

[0030] See Figure 5 , Figure 6 The bearing support assembly 4 includes a support plate 41, screw 42, locating pin 43, and ball bearing 44. The support plate 41 is mounted on the worktable 1 using screw 42 and locating pin 43. The top of the support plate 41 has two ear-shaped structures, and a rotatable ball bearing 44 is mounted on the front side of each ear-shaped structure. A shoulder bolt 45 passes through the ball bearing 44, sleeve 46, and support plate 41, and is then fastened to a nut 47. Washers 48 are provided between the ball bearing 44 and sleeve 46, and between the support plate 41 and nut 47.

[0031] A lead screw 5 or guide rod 6 is placed between the two ear-shaped structures. The surface of the ball bearing 44 is in contact with the surface of the lead screw 5 or guide rod 6, facilitating the rotation of the lead screw 5 or guide rod 6. Simultaneously, it can accommodate the installation of lead screws 5 and guide rods 6 of different thicknesses and perform straightness testing.

[0032] See Figure 7 , Figure 8 The motor sensor assembly 8 includes a connecting plate 81, a butterfly motor 83, a coupling 84, and a displacement sensor 85. The connecting plate 81 is mounted on a slide base. Two butterfly motors 83 are mounted on the top two sides of the connecting plate 81. The shafts of the butterfly motors 83 are connected to the lower end of the coupling 84. The displacement sensor 85 is mounted on the upper end of the coupling 84. The measuring end 851 of the displacement sensor 85 is located on the side close to the lead screw 5 or the guide rod 6, and is used to measure the straightness of the lead screw 5 and the guide rod 6 respectively.

[0033] The connecting plate 81 is fixed to the slide base, the butterfly motor 83 is fixed to the connecting plate 81, and the butterfly motor 83 is fixed to the coupling 84 with screws 82. The coupling 84 is fixed to the displacement sensor 85 with nuts 86.

[0034] The displacement sensor 85 uses a high-precision magnetic induction displacement sensor, which enables the straightness measurement accuracy to reach 0.01mm, fully meeting customer requirements.

[0035] Two sets of tri-color lights 9 are installed on the workbench 1. The two sets of tri-color lights 9 correspond to the lead screw 5 and the guide rod 6 respectively. They are used to indicate whether the part is qualified after each measurement. If it is qualified, the light is green and if it is not qualified, the light is red.

[0036] In operation, the lead screw 5 and guide rod 6 are connected to adapter 11 and adapter 2 13 respectively. Then, the positioning pins 2 111 of adapter 11 and 3 131 of adapter 2 13 are inserted into the corresponding positioning holes of the positioning adapter plate 10. Simultaneously, the lead screw 5 and guide rod 6 are placed on the bearing support assembly 4. After the test bench is started, the shafts of the two butterfly motors 83 extend and, through the coupling 84, drive the measuring end 851 of the displacement sensor 85 to contact the lead screw 5 and guide rod 6 respectively. Then, the two motors 3 rotate 360°, taking one displacement value every 60°, for a total of six displacement values.

[0037] The shafts of the butterfly motors 83 retract, and the slide cylinder 7 drives the motor sensor assembly 8 to move to the next position. The shafts of the two butterfly motors 83 extend again, and through the coupling 84, drive the measuring end 851 of the displacement sensor 85 to contact the lead screw 5 and the guide rod 6 again. Then, the two motors 3 rotate 360° again, taking one displacement value every 60°, for a total of 6 displacement values.

[0038] The shafts of the butterfly motors 83 retract again, and the slide cylinder 7 moves the motor sensor assembly 8 to its final position. The shafts of the two butterfly motors 83 extend for the third time, and through the coupling 84, drive the measuring end 851 of the displacement sensor 85 to make contact with the lead screw 5 and guide rod 6 for the third time. Then, the two motors 3 rotate 360° for the third time, taking one displacement value every 60°, for a total of six displacement values. After the measurement is completed, the shafts of the butterfly motors 83 retract to their original position, and the slide cylinder 7 drives the motor sensor assembly 8 back to its initial position.

[0039] The displacement values ​​of 6 at 3 positions, totaling 18 displacement values, are fed back to the PLC system through displacement sensor 85. The PLC system automatically calculates the maximum displacement deviation at the 3 positions, which is the straightness result of the lead screw and guide rod over the entire length range.

[0040] This invention designs a lead screw and guide rod straightness testing platform. The rotation of the lead screw and guide rod is achieved through a motor and bearing support assembly. The movement of the motor and sensor assembly is driven by a slide cylinder, thus enabling the testing of the straightness of the lead screw and guide rod. This invention is suitable for testing lead screws and guide rods of different thicknesses and has the advantages of simple operation, high efficiency and accuracy, and good stability.

Claims

1. A lead screw and guide rod straightness test stand comprising a work table, a motor mounting plate, a motor, a connector, a bearing support assembly, a slide cylinder, a motor sensor assembly, characterized in that: A slide cylinder (7) is installed in the center of the worktable (1). A motor sensor assembly (8) is installed on the slide seat of the slide cylinder (7). A motor mounting plate (2) is installed on the worktable (1) on the front and rear sides of the slide cylinder (7). The motor (3) is fixed on the motor mounting plate (2). Two bearing support assemblies (4) are arranged along the axis of the output shaft of the motor (3). The two ends of the lead screw (5) or the two ends of the guide rod (6) are placed on the corresponding bearing support assembly (4). The output shaft of the motor (3) is directly connected to the lead screw (5) or the guide rod (6) by a connector. The two measuring ends of the motor sensor assembly (8) are in contact with the surfaces of the lead screw (5) and the guide rod (6) respectively.

2. The straightness test bench for lead screw and guide rod according to claim 1, characterized in that: The motor mounting plate (2) is mounted on the workbench (1) with screw one (21) and positioning pin one (22), and the motor (3) is directly fixed to the motor mounting plate (2) with screw two (23).

3. The straightness test bench for lead screw and guide rod according to claim 1, characterized in that: The connecting components include a positioning adapter plate (10) and an adapter one (11). The positioning adapter plate (10) is installed on the output shaft of the motor (3) with screw three (12). The adapter one (11) is installed at the end of the lead screw (5). The positioning pin two (111) on the end face of the adapter one (11) is inserted into the positioning hole on the end face of the positioning adapter plate (10).

4. The straightness test bench for lead screw and guide rod according to claim 1, characterized in that: The connecting components include a positioning adapter plate (10) and an adapter two (13). The positioning adapter plate (10) is mounted on the output shaft of the motor (3) with screw three (12). The end of the guide rod (6) is fitted with an annular connector (14). The adapter two (13) and the annular connector (14) are connected with screw four (15). The positioning pin three (131) on the end face of the adapter two (13) is inserted into the positioning hole on the end face of the positioning adapter plate (10).

5. The straightness test bench for lead screw and guide rod according to claim 1, characterized in that: The bearing support assembly (4) includes a support plate (41), screw five (42), positioning pin four (43), and ball bearing (44). The support plate (41) is mounted on the workbench (1) with screw five (42) and positioning pin four (43). The top of the support plate (41) has two ear-shaped structures, and a rotatable ball bearing (44) is mounted on the front side of each ear-shaped structure.

6. The linear straightness test bed for a lead screw and guide rod of claim 5, wherein: A lead screw (5) or a guide rod (6) is placed between the two ear-shaped structures, and the surface of the ball bearing (44) is in contact with the surface of the lead screw (5) or the guide rod (6).

7. The straightness test table for lead screws and guide rods of claim 5, wherein: After the shoulder bolt (45) passes through the ball bearing (44), sleeve (46), and support plate (41), it is fastened to nut one (47). Washers (48) are provided between the ball bearing (44) and sleeve (46) and between support plate (41) and nut one (47).

8. The straightness test table for lead screws and guide rods of claim 1, wherein: The motor sensor assembly (8) includes a connecting plate (81), a butterfly motor (83), a coupling (84), and a displacement sensor (85). The connecting plate (81) is mounted on a slide table, and two butterfly motors (83) are mounted on the top two sides of the connecting plate (81). The shafts of the butterfly motors (83) are connected to the lower end of the coupling (84). The upper end of the coupling (84) is equipped with a displacement sensor (85), and the measuring end (851) of the displacement sensor (85) is located on the side close to the lead screw (5) or the guide rod (6).

9. The linear straightness test bed for a lead screw and guide rod of claim 8, wherein: The connecting plate (81) and the slide base, the butterfly motor (83) and the connecting plate (81), and the butterfly motor (83) and the coupling (84) are fixed with six screws (82), and the coupling (84) and the displacement sensor (85) are fixed with two nuts (86).

10. The straightness test bench for lead screw and guide rod according to claim 1, characterized in that: Two sets of tri-color lights (9) are installed on the workbench (1).

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