A ball screw pair nut processing and positioning tool

Abstract

This invention discloses a positioning fixture for machining ball screw nut, comprising a base, with a carrier plate detachably connected to the upper end of the base via a drive assembly. The drive assembly drives the carrier plate to rotate. Multiple through-holes are arranged in a circular array on the base, and vertical plates are slidably connected within each of the through-holes. An adjustment assembly on the base drives the multiple vertical plates to move synchronously, causing them to move closer or further apart. This invention features a reasonable structural design, enabling centering of the nut to be machined and allowing it to rotate with the carrier plate, or to be stably fixed and unable to rotate, meeting different machining needs. Furthermore, by using a laser marker to illuminate the nut, the desired machining position can be located. Waste generated during machining falls and accumulates in the carrier plate for centralized collection, and the carrier plate can be easily removed for cleaning or replacement, making operation simple.

Description

Technical Field

[0001] The invention relates to the technical field of ball screw pair nut processing, and in particular to a ball screw pair nut processing and positioning tool. Background Art

[0002] Ball screws are the most commonly used transmission elements in tool machinery and precision machinery. The ball circulation methods include circulation duct type, circulator type, and end cap type. Its main function is to convert rotary motion into linear motion, or torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] The ball nut is usually mounted on the outer surface of the ball screw. During processing, the ball nut needs to be fixed with a fixture to process the ball nut. When the existing fixture is clamped on the ball nut, eccentricity is prone to occur. The eccentric ball nut will not only directly affect the efficiency of subsequent processes such as fine grinding and polishing, but also cause direct damage to the ball nut in severe cases, affecting the processing efficiency. In addition, after the existing fixture fixes the ball nut, the ball nut cannot be rotated to adjust the direction, which is not conducive to the staff to process different positions of the nut and has limitations in use. For this reason, we have designed a ball screw pair nut processing and positioning tooling to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and a ball screw pair nut processing and positioning tool is proposed, which can center the nut to be processed, and can make the nut rotate with the carrying plate, or stably fix the nut so that it cannot rotate, so as to meet different processing and use requirements. By making the laser of the laser marker hit the nut, the position to be processed can be positioned, and the waste chips generated during the processing can fall and accumulate in the carrying plate for centralized collection, and it is convenient to remove the carrying plate for cleaning or replacement, and the operation is simple.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A ball screw pair nut processing and positioning tool, including a base, the upper end of the base is detachably connected to a carrier plate through a driving component, the driving component drives the carrier plate to rotate, a plurality of through holes are opened in a ring array on the base, and vertical plates are slidably connected in the plurality of through holes, the base is provided with an adjustment component for driving the plurality of vertical plates to move synchronously, the adjustment component drives the plurality of vertical plates to approach each other or move away from each other synchronously, the upper end of the vertical plate is fixedly connected to a mounting plate, the upper end of the mounting plate is fixedly connected to a positioning component for fixing the nut body, a limit component is passed through the mounting plate and abuts against the side wall of the positioning component, and a laser marking component is provided at the upper end of the base.

[0007] Preferably, the driving assembly comprises a first driving motor mounted on the upper end of the base, a rectangular plate is fixedly connected to the end of the output shaft of the first driving motor, and the carrying plate is plug-connected to the rectangular plate.

[0008] Preferably, the adjusting assembly includes a mounting opening opened at the bottom of the base and interconnected with multiple through ports, the bottom of the base is connected to a support plate through multiple connecting rods, a first servo motor extending into the mounting opening is installed on the upper end of the support plate, a first bevel gear is installed on the end of the output shaft of the first servo motor, the inner side walls of the multiple through ports are rotatably connected with a first threaded rod extending into the through port, the multiple first threaded rods are threaded through the corresponding vertical plates, and the ends of the multiple first bevel gears are fixedly connected with a second bevel gear meshing with the first bevel gear.

[0009] Preferably, the positioning assembly includes a hollow plate fixedly connected to the upper end of the mounting plate, a horizontal plate slidingly connected through the hollow plate, a roller rotatably connected to the bottom of one end of the horizontal plate, a connecting block fixedly connected to the other end of the horizontal plate, a plurality of first springs connected between the connecting block and the side wall of the hollow plate, and a U-shaped plate with an opening facing the roller fixedly connected to the side wall of the hollow plate.

[0010] Preferably, the side walls of the U-shaped plate are wrapped with rubber anti-skid pads, and the inner side walls at both ends of the U-shaped plate are inclined.

[0011] Preferably, the limiting assembly includes an L-shaped plate that slides through and is connected to the mounting plate, the L-shaped plate abuts against the side wall of the connecting block, the bottom of the L-shaped plate is fixedly connected to an iron plate, a plurality of second springs are connected between the iron plate and the bottom of the mounting plate, and the side wall of the vertical plate is fixedly connected to an electromagnet located below the iron plate.

[0012] Preferably, the laser marking assembly includes a vertical support rod fixedly connected to the upper end of the base, a horizontal slide is provided above the vertical support rod, a guide slide groove is provided at the bottom of the horizontal slide, and a guide slide block extending into the guide slide groove is fixedly connected to the upper end of the vertical support rod, a second servo motor is installed on the side wall of the horizontal slide, a second threaded rod extending into the guide slide groove is installed at the end of the output shaft of the second servo motor, the second threaded rod thread passes through the guide slide block, an electric telescopic rod is installed at the bottom of the horizontal slide, a second drive motor is installed at the telescopic end of the electric telescopic rod through a fixed plate, and a laser marking device is installed at the end of the output shaft of the second drive motor.

[0013] Preferably, a plurality of supporting legs are fixedly connected to the bottom of the base, and mounting holes are formed through the plurality of supporting legs.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the ball screw pair nut processing and positioning tooling, multiple vertical plates are synchronously approached or moved away from each other, so that multiple rollers can center the nut, and in this case, the nut rotates with the carrier plate, which is convenient for processing different positions of the nut. When the electromagnet is powered off, the second spring can pull the iron plate to move upward, so that the L-shaped plate no longer abuts against the side wall of the connecting block, and then the multiple vertical plates continue to approach each other, which can make the U-shaped plate abut against the side wall of the nut, and the nut is stably fixed so that the nut cannot rotate, meeting different processing and use requirements.

[0016] 2. In this ball screw pair nut processing and positioning tooling, the horizontal slide moves left and right on the guide slide to adjust the position of the laser marker. The laser of the laser marker hits the nut, which can locate the position to be processed, and the height and direction of the laser marker can be adjusted. The waste chips generated during the processing fall and accumulate in the carrier plate, and the carrier plate can be removed for cleaning or replacement, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure from a first perspective of a ball screw pair nut processing and positioning tooling proposed by the present invention;

[0018] Figure 2 A schematic diagram of the three-dimensional structure from a second perspective of a ball screw pair nut processing and positioning tooling proposed by the present invention;

[0019] Figure 3 A schematic diagram of the three-dimensional structure from a third perspective of a ball screw pair nut processing and positioning tooling proposed by the present invention;

[0020] Figure 4 for Figure 3A magnified view of the structure at center;

[0021] Figure 5 A schematic cross-sectional view of a ball screw pair nut machining and positioning tooling proposed by the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of the structure at point B in the middle.

[0023] In the figure: 1. base; 2. first drive motor; 3. rectangular plate; 4. bearing plate; 5. through-port; 6. vertical plate; 7. first threaded rod; 8. second bevel gear; 9. connecting rod; 10. support plate; 11. first servo motor; 12. first bevel gear; 13. mounting plate; 14. hollow plate; 15. horizontal plate; 16. roller; 17. connecting block; 18. first spring; 19. U-shaped plate; 20. electromagnet; 21. L-shaped plate; 22. iron plate; 23. second spring; 24. vertical support rod; 25. horizontal slide plate; 26. second servo motor; 27. second threaded rod; 28. electric telescopic rod; 29. ​​second drive motor; 30. laser marker. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-Figure 6 A ball screw pair nut processing and positioning tooling includes a base 1, a plurality of supporting legs are fixedly connected to the bottom of the base 1, and mounting holes are provided on the plurality of supporting legs. The arrangement of the mounting holes facilitates the installation of the positioning device on a processing workbench. The upper end of the base 1 is detachably connected to a carrying plate 4 through a driving assembly, and the driving assembly drives the carrying plate 4 to rotate. The driving assembly comprises a first driving motor 2 installed on the upper end of the base 1, and a rectangular plate 3 is fixedly connected to the end of the output shaft of the first driving motor 2. The carrying plate 4 is plugged and connected to the rectangular plate 3. A groove is provided at the upper end of the carrying plate 4 so that the waste chips generated during the processing can fall into the groove and be collected. A rectangular groove adapted to the rectangular plate 3 is provided at the bottom of the carrying plate 4, which is convenient for plugging the carrying plate 4 on the rectangular plate 3 or removing it from the rectangular plate 3, so as to facilitate cleaning or replacement of the carrying plate 4.

[0026] A plurality of through openings 5 ​​are provided in a circular array on the base 1, and vertical plates 6 are slidably connected in the plurality of through openings 5. The vertical plates 6 are adapted to the through openings 5 ​​so that they can slide along the through openings 5. An adjusting component for driving the plurality of vertical plates 6 to move synchronously is provided on the base 1, and the adjusting component drives the plurality of vertical plates 6 to move synchronously toward each other or synchronously away from each other. The adjusting component includes a mounting opening provided at the bottom of the base 1 and interconnected with the plurality of through openings 5. A support plate 10 is connected to the bottom of the base 1 through a plurality of connecting rods 9. A first servo motor 11 extending into the mounting opening is installed at the upper end of the support plate 10, and a first bevel gear 12 is installed at the end of the output shaft of the first servo motor 11. The inner side walls of the through opening 5 are all rotatably connected with first threaded rods 7 extending into the through opening 5, and the plurality of first threaded rods 7 are all threadedly penetrated through the corresponding vertical plates 6. The first threaded rods 7 rotate, and can make the vertical plates 6 slide in the through opening 5 under the meshing action of the threads thereof. The ends of the plurality of first bevel gears 12 are all fixedly connected with second bevel gears 8 meshing with the first bevel gears 12. Under the meshing action of the first bevel gears 12 and the second bevel gears 8, when the first servo motor 11 drives the first bevel gears 12 to rotate, the plurality of second bevel gears 8 can drive the plurality of first threaded rods 7 to rotate synchronously, thereby making the plurality of vertical plates 6 slide in the corresponding through openings 5, approaching or moving away from each other;

[0027] The upper end of the vertical plate 6 is fixedly connected with a mounting plate 13, and the upper end of the mounting plate 13 is fixedly connected with a positioning assembly for fixing the nut body. The positioning assembly includes a hollow plate 14 fixedly connected to the upper end of the mounting plate 13, and a horizontal plate 15 is slidably connected through the hollow plate 14. A roller 16 is rotatably connected to the bottom of one end of the horizontal plate 15, and a connecting block 17 is fixedly connected to the other end of the horizontal plate 15. A plurality of first springs 18 are connected between the connecting block 17 and the side wall of the hollow plate 14. The first spring 18 is a tension spring, and the natural state The connecting block 17 can be pulled down to approach the hollow plate 14, so that the cross plate 15 extends outward from the hollow plate 14. The side wall of the hollow plate 14 is fixedly connected with a U-shaped plate 19 with an opening facing the roller 16. The side wall of the U-shaped plate 19 is wrapped with a rubber anti-skid pad. When the U-shaped plate 19 abuts against the nut, the friction between the nut and the nut can be increased to stably fix the nut. The inner side walls at both ends of the U-shaped plate 19 are inclined, so that the roller 16 can move to the inside of the U-shaped plate 19, and it is convenient for the U-shaped plate 19 to abut against the side wall of the nut to fix the nut;

[0028] The mounting plate 13 is provided with a limit assembly that abuts against the side wall of the positioning assembly. The limit assembly includes an L-shaped plate 21 that is slidably connected to the mounting plate 13. The L-shaped plate 21 abuts against the side wall of the connecting block 17. The L-shaped plate 21 can limit the connecting block 17 so that the connecting block 17 cannot move in the direction away from the hollow plate 14. The bottom of the L-shaped plate 21 is fixedly connected to an iron plate 22. A plurality of second springs 23 are connected between the iron plate 22 and the bottom of the mounting plate 13. The second spring 23 is a tension spring, which can pull the iron plate 22 upward in a natural state to move the L-shaped plate 21 upward. The side wall of the vertical plate 6 is fixedly connected to an electromagnet 20 located below the iron plate 22. When the electromagnet 20 is energized, it can generate an attraction force with the iron plate 22, so that the iron plate 22 drives the L-shaped plate 21 to move downward.

[0029] A laser marking assembly is provided at the upper end of the base 1, and the laser marking assembly includes a vertical support rod 24 fixedly connected to the upper end of the base 1, a horizontal slide 25 is provided above the vertical support rod 24, a guide slide groove is provided at the bottom of the horizontal slide 25, and a guide slide block extending into the guide slide groove is fixedly connected to the upper end of the vertical support rod 24, and a second servo motor 26 is installed on the side wall of the horizontal slide 25, and a second threaded rod 27 extending into the guide slide groove is installed at the end of the output shaft of the second servo motor 26, and the second threaded rod 27 threads through the guide slide block. Since the vertical support rod 24 is fixed, when the second servo motor 26 is The servo motor 26 drives the second threaded rod 27 to rotate, and the transverse slide 25 can be moved left and right under the action of the thread engagement between it and the guide slider, so as to adjust the left and right position of the laser marker 30. An electric telescopic rod 28 is installed at the bottom of the transverse slide 25, and a second drive motor 29 is installed at the telescopic end of the electric telescopic rod 28 through a fixed plate. A laser marker 30 is installed at the end of the output shaft of the second drive motor 29. The electric telescopic rod 28 can drive the laser marker 30 to move up and down, and the second drive motor 29 can drive the laser marker 30 to rotate in the horizontal direction to adjust its direction.

[0030] The present invention can be explained by the following operation mode:

[0031] In the present invention, when the ball screw pair nut processing and positioning tool is used, the nut to be processed is placed on the carrying plate 4, and the first servo motor 11 is started to drive the first bevel gear 12 to rotate, which can make the multiple second bevel gears 8 drive the corresponding first threaded rods 7 to rotate respectively under the meshing action, so that the multiple vertical plates 6 can be synchronously approached or moved away from each other, and then the multiple rollers 16 can approach each other and push the nut to move to center the nut (in this process, the electromagnet 20 is energized to generate an attractive force with the iron plate 22, so that the L-shaped plate 21 moves down and abuts against the side wall of the connecting block 17), so that the center of the nut and the center of the carrying plate 4 are located on the same vertical straight line. At this time, starting the first drive motor 2 to drive the carrying plate 4 to rotate can make the nut rotate with the carrying plate 4, which is convenient for processing different positions of the nut. The rolling of the multiple rollers 16 allows the nut to rotate normally with the carrying plate 4, and the multiple rollers 16 can block the nut to avoid the eccentric movement of the nut, thereby ensuring the normal progress of the processing work;

[0032] When the nut needs to be stably fixed so that it cannot rotate, the electromagnet 20 is powered off, and the second spring 23 can pull the iron plate 22 to move upward, so that the L-shaped plate 21 no longer abuts against the side wall of the connecting block 17, and the L-shaped plate 21 moves to the top of the hollow plate 14, and the first servo motor 11 is started to continue to drive the first bevel gear 12 to rotate, so that the multiple vertical plates 6 can continue to approach each other, and then the roller 16 can move into the U-shaped plate 19 until the U-shaped plate 19 abuts against the side wall of the nut, so that the nut is stably fixed and cannot rotate, so as to meet different processing and use requirements;

[0033] The second servo motor 26 drives the second threaded rod 27 to rotate, and the transverse slide plate 25 can be moved left and right on the guide slide block to adjust the position of the laser marker 30 under the meshing action. The laser of the laser marker 30 hits the nut, and the position to be processed can be positioned. The electric telescopic rod 28 drives the laser marker 30 to move up and down to adjust its height. The second drive motor 29 drives the laser marker 30 to rotate to adjust its direction, so as to facilitate the laser to hit the inner wall or outer wall of the nut, and locate the processing position, which is easy to operate;

[0034] The waste chips generated during the processing fall and accumulate in the carrier plate 4. The carrier plate 4 is pulled upward to make the rectangular plate 3 fall off from the groove at the bottom of the carrier plate 4. The carrier plate 4 can be removed for cleaning or replacement, which is easy to operate.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball screw nut processing and positioning tool, comprising a base (1), characterized in that: The upper end of the base (1) is detachably connected to a carrier plate (4) via a driving component, the driving component drives the carrier plate (4) to rotate, a plurality of through openings (5) are provided in a ring array on the base (1), a plurality of through openings (5) are slidably connected to vertical plates (6), an adjustment component is provided on the base (1) for driving the plurality of vertical plates (6) to move synchronously, the adjustment component drives the plurality of vertical plates (6) to synchronously approach each other or synchronously move away from each other, a mounting plate (13) is fixedly connected to the upper end of the vertical plate (6), a positioning component for fixing the nut body is fixedly connected to the upper end of the mounting plate (13), a limiter component is provided on the mounting plate (13) and abuts against the side wall of the positioning component, and a laser marking component is provided on the upper end of the base (1); The positioning assembly comprises a hollow plate (14) fixedly connected to the upper end of the mounting plate (13), a horizontal plate (15) slidably connected to the hollow plate (14), a roller (16) rotatably connected to the bottom of one end of the horizontal plate (15), a connecting block (17) fixedly connected to the other end of the horizontal plate (15), a plurality of first springs (18) connected between the connecting block (17) and the side wall of the hollow plate (14), and a U-shaped plate (19) with an opening facing the roller (16) fixedly connected to the side wall of the hollow plate (14); The side walls of the U-shaped plate (19) are wrapped with rubber anti-skid pads, and the inner side walls at both ends of the U-shaped plate (19) are arranged at an angle; The limiting assembly comprises an L-shaped plate (21) that is slidably connected to the mounting plate (13), the L-shaped plate (21) abuts against the side wall of the connecting block (17), an iron plate (22) is fixedly connected to the bottom of the L-shaped plate (21), a plurality of second springs (23) are connected between the iron plate (22) and the bottom of the mounting plate (13), and an electromagnet (20) located below the iron plate (22) is fixedly connected to the side wall of the vertical plate (6).

2. A ball screw pair nut processing and positioning tool according to claim 1, characterized in that: The driving assembly comprises a first driving motor (2) mounted on the upper end of the base (1); the end of the output shaft of the first driving motor (2) is fixedly connected to a rectangular plate (3); and the supporting plate (4) is plug-connected to the rectangular plate (3).

3. The ball screw nut processing and positioning tool according to claim 1, characterized in that: The adjustment assembly comprises a mounting opening opened at the bottom of the base (1) and interconnected with the plurality of through openings (5); the bottom of the base (1) is connected to a support plate (10) via a plurality of connecting rods (9); a first servo motor (11) extending into the mounting opening is mounted on the upper end of the support plate (10); a first bevel gear (12) is mounted on the end of the output shaft of the first servo motor (11); the inner side walls of the plurality of through openings (5) are rotatably connected to first threaded rods (7) extending into the through openings (5); the plurality of first threaded rods (7) are threadedly passed through corresponding vertical plates (6); and the ends of the plurality of first bevel gears (12) are fixedly connected to second bevel gears (8) meshing with the first bevel gears (12).

4. A ball screw pair nut processing and positioning tool according to claim 1, characterized in that: The laser marking assembly comprises a vertical support rod (24) fixedly connected to the upper end of the base (1); a horizontal slide plate (25) is provided above the vertical support rod (24); a guide slide groove is provided at the bottom of the horizontal slide plate (25); a guide slide block extending into the guide slide groove is fixedly connected to the upper end of the vertical support rod (24); a second servo motor (26) is installed on the side wall of the horizontal slide plate (25); a second threaded rod (27) extending into the guide slide groove is installed at the end of the output shaft of the second servo motor (26); the second threaded rod (27) threadably penetrates the guide slide block; an electric telescopic rod (28) is installed at the bottom of the horizontal slide plate (25); a second drive motor (29) is installed at the telescopic end of the electric telescopic rod (28) through a fixed plate; and a laser marking device (30) is installed at the end of the output shaft of the second drive motor (29).

5. The ball screw pair nut processing and positioning tool according to claim 1, characterized in that: A plurality of supporting legs are fixedly connected to the bottom of the base (1), and mounting holes are provided through the plurality of supporting legs.

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