Bar positioning device for centerless lathe

Abstract

The utility model discloses a bar stock positioning device for a centerless lathe, which belongs to the field of shaft rod bar stock processing, and comprises a support frame, according to the bar stock positioning device for the centerless lathe, clamping seats on two corresponding sides are shifted, a first spring is stressed and stretched, and a bar stock can be directly placed between the two corresponding clamping seats, so that the bar stock positioning device is simple in structure and convenient to use. Bars of different sizes can be placed by adjusting the distance between the clamping bases, then the hydraulic rod drives the upper top base to move to the lower base, the clamping bases at the upper top base abut against the left sides and the right sides of the upper portions of the bars, then the lock tooth frame is pulled, and the two-way threaded rod is rotated; the adjusting mechanism drives the abutting plates on the two sides of the lower base to move in the close directions at the same time, the clamping bases in the lower base and the upper top base are abutted and limited together, and therefore bars in the clamping bases can be clamped in a unified mode, the device can adapt to the bars of different sizes, the bars of any size can be clamped and limited, and the applicability is wide.

Description

Technical Field

[0001] The utility model relates to the field of shaft rod bar processing, and more specifically to a bar positioning device for a centerless lathe. Background Art

[0002] The centerless lathe is a special machine tool for external cylindrical processing of round bar materials with a large aspect ratio. It is particularly suitable for processing hot-rolled or heat-treated bars in the production process of metal bar profiles. It can remove defects such as decarburization layers and cracks on the surface of metal bars at a high speed and high efficiency, so that its surface quality reaches a certain size and shape accuracy.

[0003] The current bar positioning device for centerless lathes, such as the "A Bar Positioning Device for Centerless Lathe" proposed with patent number 202322009416.7, includes a support plate and a fixed support frame, and the fixed support frame is installed at the upper right position of the support plate. In the utility model, through the cooperation of a moving component, a clamping component, a threaded round rod and a servo motor, multiple bars can be clamped at one time. When in use, the end heads of multiple bars are placed in the bar placement plate in turn. When placing, multiple bars can be placed at one time, and the U-shaped placement groove has a certain depth, so the bars can be placed in a stacked manner. Then, the threaded round rod is rotated by the servo motor, so that the bar placement plate drives the bar to move to the right on the support plate until it reaches the lower end position of the fixed support frame. Then, the output rod of the electric cylinder presses down and pushes the clamping component, so that the groove of the clamping component clamps and fixes the bar on the top end face of the bar placement plate in turn. The bar placement plate and the clamping component are used in combination to clamp multiple bars at one time, thereby improving work efficiency.

[0004] The existing bar positioning device for centerless lathes places the shaft bar in the U-shaped placement groove, and then uses the clamping assembly to support the shaft bar. Although it can play a role in positioning and fixing the shaft bar, in actual use, the internal dimensions of the U-shaped placement groove are fixed, and can only limit the position of bars of a single size. It has narrow applicability and is not easy to apply to bars of different sizes. If the bar size is too small, it will move around in the U-shaped groove. If the bar size is too large, it will be difficult to place in the U-shaped groove, affecting the overall use effect. Therefore, there is an urgent need to improve the technology of the bar positioning device structure for centerless lathes to improve this equipment. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a bar positioning device for a centerless lathe, which can be realized by toggling the clamping seats on the corresponding two sides when the bar positioning device for the centerless lathe is used. The first spring is stretched by force, and the bar can be directly placed between the two corresponding clamping seats. By adjusting the distance between the clamping seats, bars of different sizes can be placed. Then, the upper top seat is driven to move to the lower base by the hydraulic rod, so that the clamping seat at the upper top seat supports the left and right sides of the upper part of the bar. Then, the locking tooth frame is pulled, and the two-way threaded rod is rotated. The abutment plates on both sides of the lower base are driven to move in similar directions at the same time through the adjustment mechanism, and the clamping seats in the lower base and the upper top seat are abutted and limited together, so that the bar inside them can be uniformly clamped. The device can adapt to bars of different sizes and can clamp and limit bars of any size. It has a wide range of applicability.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A bar positioning device for a centerless lathe comprises a support frame, both sides of the top end of the support frame are fixedly connected to hydraulic rods, a cross beam is connected between the hydraulic rods, the top of the support frame is fixedly connected to the lower base, the bottom end of the cross beam is connected to an upper top seat corresponding to the side of the lower base, the upper top seat and the lower base are both provided with a first slide groove, five groups of first sliding blocks are slidably connected inside the first slide groove, each group of the first sliding blocks is provided with two, each group of the first sliding blocks is fixedly connected between the first springs, the end of the first sliding block away from the first slide groove is fixedly connected to a clamping seat, both sides of the top of the lower base are provided with abutment plates, and the position of the abutment plates is adjusted by an adjusting mechanism in the support frame.

[0010] Furthermore, the top of the support frame is provided with two symmetrical second sliding grooves, the inside of the second sliding groove is slidably connected with a second slider, the top of the second slider is fixedly connected with a connecting frame, the connecting frame is connected to the abutment plate, the inside of the second sliding groove is rotatably connected with a bidirectional threaded rod, the bidirectional threaded rod extends to the outside of the support frame and is rotatably connected with the support frame, a through hole is provided on one side of the support frame close to the bidirectional threaded rod, and the rotation direction of the bidirectional threaded rod is limited by a locking mechanism in the support frame.

[0011] Furthermore, the bidirectional threaded rod passes through the second slider, and the bidirectional threaded rod and the second slider form a threaded connection.

[0012] Furthermore, the end of the bidirectional threaded rod is fixedly connected to a cylindrical gear, a groove is provided on the side of the support frame close to the cylindrical gear, an open groove is provided inside the hydraulic rod, a second spring is fixedly connected to the inner top wall of the open groove, and the other end of the second spring is fixedly connected to a lock tooth frame, and the bottom end of the lock tooth frame abuts against the meshing teeth at the outer end of the cylindrical gear.

[0013] Furthermore, the second spring is made of stainless steel, and the outer end of the second spring is provided with a wear-resistant layer.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) The utility model, by toggling the clamping seats on the corresponding two sides, the first spring is stretched under force, and the bar material can be directly placed between the two corresponding clamping seats. By adjusting the distance between the clamping seats, bars of different sizes can be placed. Then, the upper top seat is driven to move to the lower base by the hydraulic rod, so that the clamping seat at the upper top seat supports the left and right sides of the upper part of the bar material. Then, the locking tooth frame is pulled, and the two-way threaded rod is rotated. The abutment plates on both sides of the lower base are driven to move in similar directions at the same time through the adjustment mechanism, and the clamping seats in the lower base and the upper top seat are abutted and limited together, so that the bar materials inside them can be uniformly clamped. The device can adapt to bars of different sizes and can clamp and limit bars of any size, and has a wide range of applicability.

[0017] (2) According to the utility model, before rotating the bidirectional threaded rod, it is necessary to first pull the locking tooth frame upwards to release the lock on the bidirectional threaded rod, and then the bidirectional threaded rod can be rotated. The bidirectional threaded rod drives the second slider to move through the threaded connection formed by the second slider, and the second slider can drive the abutment plate to move through the connecting frame. When the abutment plate is rotated to a suitable position, the locking tooth frame can be released. The locking tooth frame presses against the cylindrical gear through the elastic connection formed by the second spring, and locks the cylindrical gear to a limited position, which can avoid accidentally touching the bidirectional threaded rod and causing the bidirectional threaded rod to rotate at will, and can further improve the clamping effect of the device, making it convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0020] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0021] Description of the numbers in the figure:

[0022] 1. Support frame; 2. Hydraulic rod; 3. Crossbeam; 4. Lower base; 5. Upper top seat; 6. First slide groove; 7. First slider; 8. First spring; 9. Clamping seat; 10. Second slide groove; 11. Second slider; 12. Connecting frame; 13. Abutment plate; 14. Bidirectional threaded rod; 15. Through hole; 16. Cylindrical gear; 17. Groove; 18. Open groove; 19. Second spring; 20. Locking gear frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-3 A bar positioning device for a centerless lathe comprises a support frame 1, hydraulic rods 2 are fixedly connected to both sides of the top of the support frame 1, a crossbeam 3 is connected between the hydraulic rods 2, a lower base 4 is fixedly connected to the top of the support frame 1, an upper top seat 5 is connected to the side of the lower base 4 corresponding to the bottom end of the crossbeam 3, a first slide groove 6 is provided inside the upper top seat 5 and the lower base 4, five groups of first sliders 7 are slidably connected inside the first slide groove 6, each group of first sliders 7 is provided with two, a first spring 8 is fixedly connected between each group of first sliders 7, one end of the first slider 7 away from the first slide groove 6 is fixedly connected to a clamping seat 9, abutment plates 13 are provided on both sides of the top of the lower base 4, and the position of the butt plate 13 is adjusted by an adjusting mechanism in the support frame 1.

[0026] By moving the clamping seats 9 on the corresponding sides, the first spring 8 is stretched and the bar can be placed directly between the two corresponding clamping seats 9. By adjusting the distance between the clamping seats 9, bars of different sizes can be placed. Then, the upper top seat 5 is driven by the hydraulic rod 2 to move to the lower base 4, so that the clamping seat 9 at the upper top seat 5 supports the left and right sides of the upper part of the bar. Then, the lock tooth frame 20 is pulled, and the two-way threaded rod 14 is rotated. The abutment plates 13 on both sides of the lower base 4 are driven by the adjustment mechanism to move in similar directions at the same time, and the clamping seats 9 in the lower base 4 and the upper top seat 5 are abutted and limited together, so that the bar inside can be uniformly clamped. The device can adapt to bars of different sizes and can clamp and limit bars of any size, and has wide applicability.

[0027] See also Figure 1The top of the support frame 1 is provided with two symmetrical second slide grooves 10, and the second slide groove 10 is slidably connected to the inside of the second slide groove 10. The top of the second slide block 11 is fixedly connected to a connecting frame 12, and the connecting frame 12 is connected to the abutment plate 13. The second slide groove 10 is internally rotatably connected to a bidirectional threaded rod 14, and the bidirectional threaded rod 14 extends to the outside of the support frame 1 and is rotatably connected to the support frame 1. A through hole 15 is provided on one side of the support frame 1 close to the bidirectional threaded rod 14. The rotation direction of the bidirectional threaded rod 14 is limited by a locking mechanism in the support frame 1. The bidirectional threaded rod 14 passes through the second slide block 11, and the bidirectional threaded rod 14 is threadedly connected to the second slide block 11. The locking tooth frame 20 is pulled upward, and the bidirectional threaded rod 14 is rotated. The bidirectional threaded rod 14 drives the second slide block 11 to move through the threaded connection formed with the second slide block 11, and the second slide block 11 can drive the abutment plate 13 to move through the connecting frame 12.

[0028] See also Figure 1 and Figure 3 The end of the bidirectional threaded rod 14 is fixedly connected with a cylindrical gear 16, a groove 17 is provided on the side of the support frame 1 close to the cylindrical gear 16, an open groove 18 is provided inside the hydraulic rod 2, a second spring 19 is fixedly connected to the inner top wall of the open groove 18, and the other end of the second spring 19 is fixedly connected with a lock tooth frame 20, the bottom end of the lock tooth frame 20 is in contact with the meshing teeth at the outer end of the cylindrical gear 16, the second spring 19 is made of stainless steel, and a wear-resistant layer is provided at the outer end of the second spring 19. By setting the material of the second spring 19 to stainless steel, the second spring 19 can be prevented from rusting due to long-term use, and by providing a wear-resistant layer at the outer end of the second spring 19, the wear resistance and service life of the second spring 19 are enhanced.

[0029] In the utility model, when the relevant technical personnel use the device, they move the clamping seats 9 on the corresponding sides, and the first spring 8 is stretched by force, so that the bar material can be directly placed between the two corresponding clamping seats 9. By adjusting the distance between the clamping seats 9, bars of different sizes can be placed. Then, the upper top seat 5 is driven by the hydraulic rod 2 to move to the lower base 4, so that the clamping seat 9 at the upper top seat 5 supports the left and right sides of the upper part of the bar material;

[0030] Then pull the lock gear frame 20 and rotate the bidirectional threaded rod 14, and drive the abutment plates 13 on both sides of the lower base 4 to move in similar directions at the same time through the adjustment mechanism, so that the lower base 4 and the clamping seat 9 in the upper top seat 5 are abutted and limited together, so that the rods inside can be uniformly clamped. The device can adapt to rods of different sizes and can clamp and limit rods of any size, and has wide applicability;

[0031] When the abutment plate 13 is rotated to a suitable position, the locking tooth frame 20 can be loosened. The locking tooth frame 20 presses against the cylindrical gear 16 through the elastic connection formed by the second spring 19, and locks the cylindrical gear 16 to prevent accidental contact with the bidirectional threaded rod 14 and causing the bidirectional threaded rod 14 to rotate at will, which can further improve the clamping effect of the device and facilitate use.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bar positioning device for a centerless lathe, comprising a support frame (1), characterized in that: Both sides of the top of the support frame (1) are fixedly connected with hydraulic rods (2), a crossbeam (3) is connected between the hydraulic rods (2), the top of the support frame (1) is fixedly connected with a lower base (4), the bottom of the crossbeam (3) is connected with an upper top seat (5) on the side corresponding to the lower base (4), the upper top seat (5) and the lower base (4) are both provided with a first slide groove (6), five groups of first sliders (7) are slidably connected inside the first slide groove (6), each group of the first sliders (7) is provided with two, each group of the first sliders (7) is fixedly connected with a first spring (8), one end of the first slider (7) away from the first slide groove (6) is fixedly connected with a clamping seat (9), both sides of the top of the lower base (4) are provided with abutment plates (13), and the position of the abutment plates (13) is adjusted by an adjustment mechanism in the support frame (1).

2. The bar positioning device for a centerless lathe according to claim 1, characterized in that: The adjusting mechanism comprises a second slide groove (10), a second slider (11), a connecting frame (12), a bidirectional threaded rod (14) and a through hole (15); the top of the support frame (1) is provided with two symmetrical second slide grooves (10); the second slide groove (10) is slidably connected to the inside of the second slide groove (10); the top of the second slider (11) is fixedly connected to the connecting frame (12); the connecting frame (12) is connected to the abutment plate (13); the second slide groove (10) is rotatably connected to the inside of the bidirectional threaded rod (14); the bidirectional threaded rod (14) extends to the outside of the support frame (1) and is rotatably connected to the support frame (1); a through hole (15) is provided on a side of the support frame (1) close to the bidirectional threaded rod (14); the rotation direction of the bidirectional threaded rod (14) is limited by a locking mechanism in the support frame (1).

3. The bar positioning device for a centerless lathe according to claim 2, characterized in that: The bidirectional threaded rod (14) passes through the second slider (11), and the bidirectional threaded rod (14) and the second slider (11) form a threaded connection.

4. The bar positioning device for a centerless lathe according to claim 2, characterized in that: The locking mechanism comprises a cylindrical gear (16), a groove (17), an open groove (18), a second spring (19) and a locking tooth frame (20); the end of the bidirectional threaded rod (14) is fixedly connected to the cylindrical gear (16); a groove (17) is provided on a side of the support frame (1) close to the cylindrical gear (16); an open groove (18) is provided inside the hydraulic rod (2); a second spring (19) is fixedly connected to the inner top wall of the open groove (18); the other end of the second spring (19) is fixedly connected to the locking tooth frame (20); the bottom end of the locking tooth frame (20) abuts against the meshing teeth at the outer end of the cylindrical gear (16).

5. The bar positioning device for a centerless lathe according to claim 4, characterized in that: The material of the second spring (19) is stainless steel, and the outer end of the second spring (19) is provided with a wear-resistant layer.

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