Lead screw running machine tool

Abstract

A lead screw running machine tool comprises a machine tool which is provided with a three-jaw chuck used for clamping and driving a lead screw to rotate, a horizontal guide rail parallel to the lead screw and a sliding plate assembled on the guide rail, and is characterized in that the sliding plate is provided with a height-adjustable nut clamping seat and a supporting roller mechanism for supporting and grinding the lead screw; a nut assembled on the lead screw is clamped in the nut clamping base, the supporting roller mechanism comprises a bearing plate arranged above the sliding plate, two supporting rollers rotationally installed on the bearing plate and a height adjusting supporting assembly for supporting the bearing plate, the number of the supporting rollers is two, the supporting rollers are arranged side by side, one end of the lead screw is clamped on the three-jaw chuck, and the other end of the lead screw is clamped on the nut clamping base. The other end of the bearing plate penetrates through the nuts to be supported on the two supporting rollers, and the bearing plate ascends and descends along with adjustment of the adjusting and supporting assembly. Bending deformation of the lead screw is prevented, the stability of the lead screw is improved, the shaking, abnormal sound and jamming probability in the running process is effectively reduced, and the lead screw nut running device is suitable for running of lead screw nuts of various specifications and models and high in practicability.

Description

Technical Field

[0001] This utility model relates to a lead screw machine tool and belongs to the field of lead screw machine tool technology. Background Technology

[0002] Before installation and use, most lead screws and nuts must be run on a slide rail for a period of time to ensure smooth operation and check whether the operating parameters meet the requirements. The lead screw is held by a chuck, and the nut is held on the slide rail. As the lead screw rotates, the nut moves back and forth on the lead screw to achieve the purpose of run-in. The machine tools used for run-in of lead screws and nuts mainly have the following problems:

[0003] 1. The lead screw is relatively long, and one end of the lead screw is suspended in the air during running, causing the end of the lead screw to bend due to gravity. The lead screw is prone to deformation. Moreover, the centrifugal force generated by the rotation of the lead screw during running causes the tail end to swing greatly, resulting in poor stability of the lead screw. It often exhibits shaking, abnormal noise, and jamming. It is necessary to add support components to the lead screw.

[0004] 2. The lead screws come in various specifications and have different diameters. The height of the lead screw support and the nut clamp is fixed and cannot be adjusted, which cannot meet the running and running requirements of various specifications of lead screws and nuts. Utility Model Content

[0005] The lead screw running machine tool provided by this utility model avoids the lead screw from bending and suspending at one end during the running process, prevents the lead screw from bending and deforming, improves the stability of the lead screw, and effectively reduces the probability of vibration, abnormal noise and jamming during the running process. It can support lead screws of different diameters by adjusting the height of the support rollers and clamp nuts of different heights by adjusting the height of the nut clamping seat. It is suitable for running lead screws and nuts of various specifications and models, and has high practicality.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A lead screw feeder and machine tool, including the machine tool, which is equipped with a three-jaw chuck for clamping and rotating the lead screw, a horizontal guide rail parallel to the lead screw, and a slide plate mounted on the guide rail. The slide plate is characterized by having a height-adjustable nut clamping seat and a support roller mechanism for supporting and polishing the lead screw. The nut mounted on the lead screw is clamped in the nut clamping seat. The support roller mechanism includes a support plate positioned above the slide plate, rotatable support rollers mounted on the support plate, and a height-adjusting support assembly supporting the support plate. There are two support rollers arranged side-by-side. One end of the lead screw is clamped in the three-jaw chuck, and the other end passes through the nut and is supported on the two support rollers. The support plate rises and falls with the adjustment of the support assembly.

[0008] Preferably, the support roller is a stainless steel roller, the axial direction of the support roller is parallel to the lead screw, and the lead screw extends between the two support rollers and contacts the support rollers respectively.

[0009] Preferably, the slide plate has linear bearings fixed in a rectangular arrangement, and the bottom of the support plate has a guide shaft that extends into the linear bearings. The adjustable support assembly includes a height-adjusting bolt that is rotatable in the vertical direction, mounted on the slide plate, and threaded through the support plate, and a multi-column support plate that is mounted on the slide plate and has an adjustable support height. The height-adjusting bolt and the multi-column support plate are distributed on opposite sides of the support plate, and the support plate abuts against the multi-column support plate.

[0010] Preferably, the multi-column support plate includes a rotatable turntable mounted on a sliding plate, standard columns mounted on the top surface of the turntable at different heights, the standard columns being evenly distributed along the circumference of the turntable, and a mating pin on the bottom surface of the support plate cooperating with the standard column, the mating pin abutting against the standard column to support the support plate on the standard column.

[0011] Preferably, a groove is formed on the top surface of the standard column to mate with the mating pin.

[0012] Preferably, the turntable is a DD motor.

[0013] Preferably, the nut clamping seat includes a support block mounted on the slide plate, two clamping plates arranged opposite each other and placed on the support block, and clamping bolts fixed on the support block and passing through the clamping plates. A second height adjustment bolt parallel to the first height adjustment bolt is rotatably mounted on the slide plate. The second height adjustment bolt is threaded through the support block and symmetrically distributed on the left and right sides of the support block. The support block rises and falls with the rotation of the second height adjustment bolt, and the nut is clamped between the two clamping plates.

[0014] The beneficial effects of this utility model are:

[0015] This utility model relates to a lead screw running machine. A nut clamping seat holds the nut, and a support roller mechanism supports the lead screw. One end of the lead screw is clamped on a three-jaw chuck, and the other end is supported on two support rollers. This prevents the lead screw from bending and bending during running, thus improving its stability and effectively reducing vibration, abnormal noise, and jamming during running. The support rollers are rotatably mounted on a support plate, grinding the lead screw during rotation to remove burrs and improve its quality. The height of the nut clamping seat is adjustable, and the support plate rises and falls with the adjustment of the support components. The height of the support rollers is also adjustable, allowing support for lead screws of different diameters and clamping of nuts of different heights by adjusting the height of the nut clamping seat. This machine is suitable for running various specifications and models of lead screws and nuts, making it highly practical. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the lead screw and machine tool in a specific implementation.

[0017] Figure 2 This is a schematic diagram showing the nut holder and support roller mounted on the slide plate.

[0018] Figure 3 This is a schematic diagram of a multi-column support plate. Detailed Implementation

[0019] The following is combined Figures 1-3 The embodiments of this utility model will be described in detail below.

[0020] A lead screw machine tool includes a machine tool 1, on which a three-jaw chuck 2 for clamping and rotating the lead screw 100, a horizontal guide rail 3 parallel to the lead screw 100, and a slide plate 4 mounted on the guide rail 3 are mounted. The slide plate 4 is characterized by having a height-adjustable nut clamping seat 5 and a support roller mechanism 6 for supporting and polishing the lead screw. The nut 101 mounted on the lead screw 100 is clamped in the nut clamping seat 5. The support roller mechanism 6 includes a support plate 7 positioned above the slide plate 4, rotatable support rollers 8 mounted on the support plate 7, and a height-adjusting support assembly 9 supporting the support plate 7. There are two support rollers 8 arranged side-by-side. One end of the lead screw 100 is clamped in the three-jaw chuck 2, and the other end passes through the nut and is supported on the two support rollers 8. The support plate 7 rises and falls with the adjustment of the support assembly 9.

[0021] The lead screw running machine described above uses a nut clamping seat 5 to hold the nut and a support roller mechanism 6 to support the lead screw. One end of the lead screw 100 is clamped on a three-jaw chuck 2, and the other end is supported on two support rollers 8. This prevents one end of the lead screw from being suspended and bent during running, thus preventing bending and deformation, improving the stability of the lead screw, and effectively reducing the probability of vibration, abnormal noise, and jamming during running. The support rollers 8 are rotatably mounted on the support plate 7, which grinds the lead screw during rotation, removing burrs and improving the quality of the lead screw. The height of the nut clamping seat 5 is adjustable, and the support plate 7 rises and falls with the adjustment of the support assembly 9. The height of the support rollers 8 is also adjustable. By adjusting the height of the support rollers 8, support for lead screws of different diameters can be achieved, and by adjusting the height of the nut clamping seat 5, clamping for nuts of different heights can be achieved. This machine is suitable for running various specifications and models of lead screws and nuts, and is highly practical.

[0022] The support rollers 8 are stainless steel rollers, with their axial direction parallel to the lead screw. The lead screw extends between the two support rollers 8 and contacts each of them. The two support rollers 8 are arranged side-by-side, and the lead screw extends between them, contacting each of them to form a support. When the three-jaw chuck 2 drives the lead screw to rotate at high speed, the lead screw rotates on the support rollers 8, grinding away burrs. The two support rollers 8 not only support the lead screw but also restrict its oscillation, reducing oscillation and grinding the outer circumference of the lead screw during rotation, preventing bending and deformation, and improving the quality of the lead screw.

[0023] The slide plate 4 has linear bearings 10 fixed in a rectangular arrangement, and the bottom of the support plate 7 has a guide shaft 11 fixed and inserted into the linear bearings. The adjustable support assembly 9 includes a height adjustment bolt 12 that is rotatable in the vertical direction, mounted on the slide plate 4 and threaded through the support plate 7, and a multi-column support plate 13 that is mounted on the slide plate 4 and has an adjustable support height. The height adjustment bolt 12 and the multi-column support plate 13 are distributed on opposite sides of the support plate 7, and the support plate 7 abuts against the multi-column support plate 13. The three-jaw chuck 2 can hold lead screws of different diameters. To accommodate the support of lead screws of different diameters, the height of the support roller 8 needs to be adjusted. The support roller 8 is mounted on the support plate 7, so the height of the support plate 7 needs to be adjusted. The cooperation between the guide shaft 11 and the linear bearing 10 forms a guide for the lifting and lowering of the support plate 7, preventing the support plate 7 from tilting. Rotating the height adjustment bolt 12 can drive the support plate 7 to lift and lower. When adjusting the height of the support plate 7, first rotate the height adjustment bolt 12 to raise the support plate 7, then adjust the support height of the multi-column support plate 13 according to the support requirements of the lead screw, and then rotate the height adjustment bolt 12 to lower the support plate 7 so that the support plate 7 rests on the multi-column support plate 13, forming reliable support for the support plate 7.

[0024] The multi-column support plate 13 includes a rotatable turntable 14 mounted on a sliding plate 4 and standard columns 15 of varying heights mounted on the top surface of the turntable 14. The standard columns 15 are evenly distributed around the turntable 14. The bottom surface of the support plate 7 has a mating pin 71 that mates with the standard column 15. The mating pin 71 abuts against the standard column 15 to support the support plate 7 on the standard column 15. The standard column 15 is a support column with a standard height set according to the diameter of the lead screw. Each standard column 15 corresponds to a lead screw of a certain diameter. When a lead screw of a certain diameter is required for running, the corresponding standard column 15 is abutted against the mating pin 71, so that the lead screw is exactly supported on the support roller 8 along the axial direction. During adjustment, first turn the height adjustment bolt 12 to raise the support plate 7, then turn the turntable 14 according to the diameter of the lead screw to rotate the corresponding standard column 15 to align with the mating pin 71, then turn the height adjustment bolt 12 to lower the support plate so that the mating pin 71 abuts against the standard column 15, and the support roller 8 is supported at the corresponding height. After the lead screw is assembled in place, it is exactly supported on the support roller 8 along the axial direction.

[0025] The standard column 15 has a groove 16 on its top surface that mates with the mating pin. The groove 16 guides the mating pin 71, allowing it to be inserted into the groove 16 and abut against the standard column 15. The mating between the groove 16 and the mating pin 71 also ensures the stability of the support plate 7, thereby reducing the vibration of the support roller 8 and improving structural stability.

[0026] The turntable 14 is a DD motor. Taking advantage of the small size and high rotation angle accuracy of the DD motor, the DD motor is mounted on the slide plate 4, and the standard post 15 is mounted on the DD motor. The rotation of the DD motor makes the standard post 15 accurately aligned with the mating pin 71.

[0027] The nut clamping seat 5 includes a support block 51 mounted on the slide plate 4, two clamping plates 52 arranged opposite to each other and placed on the support block 51, and clamping bolts 53 fixed on the support block 51 and passing through the clamping plates 52. The slide plate 4 is rotatably equipped with a second height adjustment bolt 17 parallel to the first height adjustment bolt 12. The second height adjustment bolt 17 is threaded through the support block 51 and symmetrically distributed on the left and right sides of the support block 51. The support block 51 rises and falls with the rotation of the second height adjustment bolt 17. The nut 101 is clamped between the two clamping plates 52. To accommodate lead screws of different diameters, it is necessary to adjust not only the height of the support roller 8 but also the height of the nut assembled with the lead screw. The nut is clamped between two clamping plates 5, so the height of the two clamping plates 5 needs to be adjusted. The two clamping plates 52 are fastened to the support block 51 by clamping bolts 53. Rotating the second height adjustment bolt 20 can adjust the height of the support block 51, thereby adjusting the height of the two clamping plates 52 to meet the height adjustment requirements of the nut. Nuts of different sizes can be clamped between the two clamping plates 52 to meet the clamping requirements of nuts of different specifications. When the lead screw 100 rotates, the nut moves along the lead screw, and the second height adjustment bolt 17 drives the slide plate 4 to move along the horizontal guide rail, forming a lead screw and nut running together.

[0028] The technical solutions of the embodiments of this utility model have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A lead screw feeder and a machine tool, comprising a machine tool equipped with a three-jaw chuck for clamping and driving the lead screw to rotate, a horizontal guide rail parallel to the lead screw, and a slide plate mounted on the guide rail, characterized in that: The slide plate is equipped with a height-adjustable nut clamping seat and a support roller mechanism for supporting and polishing the lead screw. The nut assembled on the lead screw is clamped in the nut clamping seat. The support roller mechanism includes a support plate set above the slide plate, a rotatable support roller mounted on the support plate, and a height-adjusting support assembly for supporting the support plate. There are two support rollers arranged side by side. One end of the lead screw is clamped on a three-jaw chuck, and the other end passes through the nut and is supported on the two support rollers. The support plate rises and falls with the adjustment of the support assembly.

2. The lead screw and machine tool according to claim 1, characterized in that: The support rollers are stainless steel rollers, with their axial direction parallel to the lead screw. The lead screw extends between the two support rollers and contacts each of them.

3. The lead screw and machine tool according to claim 1, characterized in that: The slide plate is fixed with linear bearings arranged in a rectangular pattern. The bottom of the support plate is fixed with a guide shaft that extends into the linear bearings. The adjustable support assembly includes a height-adjusting bolt that is rotatable in the vertical direction, mounted on the slide plate, and threaded through the support plate. It also includes a multi-column support plate that is mounted on the slide plate and has an adjustable support height. The height-adjusting bolt and the multi-column support plate are distributed on opposite sides of the support plate, and the support plate abuts against the multi-column support plate.

4. The lead screw and machine tool according to claim 3, characterized in that: The multi-column support plate includes a rotatable turntable mounted on a sliding plate and standard columns of varying heights mounted on the top surface of the turntable. The standard columns are evenly distributed around the circumference of the turntable. The bottom surface of the support plate has a mating pin that engages with the standard column. The mating pin abuts against the standard column to support the support plate on the standard column.

5. The lead screw and machine tool according to claim 4, characterized in that: The standard column has a groove on its top surface that mates with the mating pin.

6. The lead screw and machine tool according to claim 5, characterized in that: The turntable is a DD motor.

7. The lead screw and machine tool according to claim 1, characterized in that: The nut clamping seat includes a support block mounted on a sliding plate, two clamping plates arranged opposite each other and placed on the support block, and clamping bolts fixed on the support block and passing through the clamping plates. A second height adjustment bolt, parallel to the first height adjustment bolt, is rotatably mounted on the sliding plate. The second height adjustment bolt is threaded through the support block and symmetrically distributed on the left and right sides of the support block. The support block rises and falls with the rotation of the second height adjustment bolt, and the nut is clamped between the two clamping plates.

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