Auxiliary positioning clamp for milling

Abstract

The utility model discloses an auxiliary positioning fixture for milling, and relates to the technical field of auxiliary positioning fixtures for milling, the auxiliary positioning fixture for milling comprises a base, the inner wall of the base is rotatably connected with two threaded rods I, and one end of each threaded rod I far away from the base is fixedly connected with a stud gear I; a second stud gear is fixedly connected to the outer surface of a hand wheel, a first threaded rod, a movable frame, a second threaded rod and other components are arranged, the hand wheel is rotated to drive the second stud gear to be meshed with a toothed belt and drive the first stud gear to rotate, the first stud gear drives the corresponding first threaded rod to rotate, and the first threaded rod drives a sliding block and the movable frame to achieve transverse movement. A cross rod is rotated to drive a first bevel gear to be meshed with a second bevel gear, the second bevel gear drives a second threaded rod to rotate, meanwhile, the second threaded rod drives a limiting block to move, longitudinal movement of the limiting block is achieved, and therefore the device can conveniently adjust the position of the carrier plate transversely and longitudinally and improve the precision of auxiliary positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary positioning fixtures for milling processing, in particular to an auxiliary positioning fixture for milling processing. Background Art

[0002] A machine tool fixture is a device used to clamp workpieces and guide tools on machine tools. It refers to a fixture specially designed for a certain process of a certain workpiece. It contacts the positioning reference of the workpiece and is used to determine the correct position of the workpiece in the fixture, thereby ensuring the relative correct position of the workpiece relative to the tool and the machine tool processing movement during processing.

[0003] After searching, the Chinese patent with publication number CN219234646U discloses an auxiliary positioning fixture for milling processing, and its technical key points are: including a first fixed frame, a second fixed frame is provided at the upper end of the first fixed frame, a support seat is provided at the upper end of the second fixed frame, a fixed plate is rotatably provided at the upper end of the support seat, a plurality of positioners are provided at the upper end of the fixed plate, support plates are provided on both sides of the upper end of the fixed plate, and a pair of hydraulic telescopic rods are symmetrically provided on one side of the support plate. In the utility model, the auxiliary positioning fixture for milling processing of the design can complete rapid positioning through the positioning adjustment structure when in use, so that the lathe can have higher processing accuracy for the workpiece, the automatic waste cleaning structure is provided, so that the device can clean the metal debris accumulated on the fixture more conveniently and quickly, and the auxiliary structure provided at the same time enables the device to have a certain shock absorption function, and the design is practical and worthy of promotion.

[0004] The above solution solves the shortcoming that it is difficult to quickly clean up the metal scraps accumulated on the surface of the traditional auxiliary clamp when in use. However, the device can only achieve lateral positioning during use, and cannot achieve both lateral and longitudinal positioning, which reduces the positioning accuracy. In addition, the device can only clamp rectangular workpieces. When facing circular workpieces, the device cannot provide effective clamping for the workpiece.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] In view of the above background technology, the prior art has the insufficiency and defect that it cannot achieve both horizontal and vertical positioning, which reduces the accuracy of positioning.

[0007] The utility model discloses an auxiliary positioning fixture for milling processing, comprising a base, the inner wall of the base is rotatably connected to two threaded rods, each of the threaded rods one end away from the base is fixedly connected to a column gear one, the outer surface of the base is rotatably connected to a hand wheel, the outer surface of the hand wheel is fixedly connected to a column gear two, the outer surface of the column gear two is meshed with a toothed belt, the outer surface of each column gear one is meshed with the inner wall of the toothed belt, the inner wall of the base is provided with a sliding groove one arranged at equal distances, the outer surface of each threaded rod one is threadedly connected to a sliding block, the outer surface of each sliding block is slidably connected to the inner wall of the corresponding sliding groove one, the upper surface of the base is slidably contacted with a movable frame, and the outer surface of each sliding block is fixedly connected to the outer surface of the movable frame.

[0008] Furthermore, the inner wall of the base is rotatably connected to a cross rod, the outer surface of the cross rod is rotatably connected to the inside of the movable frame, and the outer surface of the cross rod is slidably connected to a bevel gear 1.

[0009] Furthermore, a rotating ring is fixedly connected to a side surface of the bevel gear 1 close to the column gear 2, and an outer surface of the rotating ring is rotatably connected to the inside of the movable frame.

[0010] Furthermore, the outer surface of the bevel gear one is meshed with the bevel gear two, the outer surface of the bevel gear two is fixedly connected with the threaded rod two, the end of the threaded rod two away from the bevel gear two is rotatably connected to the inner wall of the movable frame, the outer surface of the threaded rod two is threadedly connected to the limiting block, the inner wall of the movable frame is provided with a sliding groove two, and the outer surface of the limiting block is slidably connected to the inner wall of the sliding groove two.

[0011] Furthermore, the upper surface of the limit block is fixedly connected to a carrier plate, the inner wall of the carrier plate is rotatably connected to a worm, the outer surface of the worm is meshed with a worm wheel, and the outer surface of the worm wheel is rotatably connected to the inner bottom wall of the carrier plate.

[0012] Furthermore, the upper surface of the worm wheel is rotatably connected to four connecting rods, and the upper surface of each connecting rod is rotatably connected to a fixing block.

[0013] Furthermore, the upper surface of the carrier plate is provided with four sliding grooves three arranged at equal distances, the inner wall of each sliding groove three is slidably connected to the outer surface of the corresponding fixed block, the upper surface of each fixed block is fixedly connected to a clamping plate, and the bottom surface of each clamping plate is in sliding contact with the upper surface of the carrier plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model sets components such as threaded rod 1, movable frame, threaded rod 2, etc., and drives column gear 2 to mesh with toothed belt and drive column gear 1 to rotate by rotating hand wheel, column gear 1 drives corresponding threaded rod 1 to rotate, so that threaded rod 1 drives sliding block and movable frame to realize lateral movement, drives bevel gear 1 to mesh with bevel gear 2 by rotating cross rod, bevel gear 2 drives threaded rod 2 to rotate, and threaded rod 2 drives limit block to move at the same time, realizes longitudinal movement of limit block, so that the device can facilitate lateral and longitudinal adjustment of carrier plate position and improve the accuracy of auxiliary positioning.

[0016] 2. The utility model is provided with components such as a worm, a worm wheel, a connecting rod, a fixed block, and a clamping plate. The worm drives the worm wheel to rotate, and the worm drives the connecting rod to move. At the same time, the connecting rod drives the corresponding fixed block to move synchronously. The fixed block drives the corresponding clamping plate to move toward the center of the carrier plate to fix and clamp the workpiece, thereby achieving the effect that the device can clamp workpieces of different shapes and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

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

[0019] Figure 2 This is a schematic diagram of the internal structure of the base of the utility model;

[0020] Figure 3 This is an enlarged structural diagram of part A of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the carrier board of the utility model.

[0022] In the figure: 1. base; 2. threaded rod 1; 3. column gear 1; 4. hand wheel; 5. column gear 2; 6. toothed belt; 7. sliding groove 1; 8. sliding block; 9. movable frame; 10. cross rod; 11. bevel gear 1; 12. rotating ring; 13. bevel gear 2; 14. threaded rod 2; 15. sliding groove 2; 16. limit block; 17. carrier plate; 18. worm; 19. worm wheel; 20. connecting rod; 21. sliding groove 3; 22. fixing block; 23. clamping plate. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model is an auxiliary positioning fixture for milling processing, including a base 1, the inner wall of the base 1 is rotatably connected to two threaded rods 2, each threaded rod 2 is fixedly connected to a column gear 3 at one end away from the base 1, the outer surface of the base 1 is rotatably connected to a hand wheel 4, the outer surface of the hand wheel 4 is fixedly connected to a column gear 5, the outer surface of the column gear 5 is meshed with a toothed belt 6, the outer surface of each column gear 3 is meshed with the inner wall of the toothed belt 6, the inner wall of the base 1 is provided with sliding grooves 7 arranged at equal distances, the outer surface of each threaded rod 2 is threadedly connected to a sliding block 8, and each sliding The outer surfaces of the blocks 8 are slidably connected to the inner walls of the corresponding sliding grooves 7, and the upper surface of the base 1 is in sliding contact with a movable frame 9. The outer surface of each sliding block 8 is fixedly connected to the outer surface of the movable frame 9. Through the connection relationship between the column gear 1 3, the column gear 2 5 and the toothed belt 6, the two threaded rods 2 can rotate synchronously and maintain the same speed and the same steering effect. Through the cooperation between the threaded rod 2, the sliding block 8 and the movable frame 9, the movable frame 9 can realize lateral reciprocating movement, and the movement trajectory of the corresponding sliding block 8 is limited by the sliding groove 7, thereby improving the stability of the movement of the sliding block 8.

[0025] See also Figure 1 , Figure 2 The inner wall of the base 1 is rotatably connected with a cross rod 10, the outer surface of the cross rod 10 is rotatably connected with the inside of the movable frame 9, and the outer surface of the cross rod 10 is slidably connected with a bevel gear 11. When the movable frame 9 moves laterally, the movable frame 9 drives the bevel gear 11 to slide on the outer surface of the cross rod 10. When the longitudinal position of the workpiece needs to be adjusted, the bevel gear 11 is driven to rotate by rotating the cross rod 10, and the threaded rod 2 14 is driven to rotate.

[0026] See also Figure 2 , Figure 3 A rotating ring 12 is fixedly connected to one side of the bevel gear 11 close to the column gear 2 5. The outer surface of the rotating ring 12 is rotatably connected to the inside of the movable frame 9. The rotating ring 12 provides a stable supporting force for the bevel gear 11 and enables the bevel gear 11 to rotate with the cross rod 10.

[0027] See also Figure 2 , Figure 3 The outer surface of the bevel gear 11 is meshed with the bevel gear 2 13, and the outer surface of the bevel gear 2 13 is fixedly connected with the threaded rod 2 14, and the end of the threaded rod 2 14 away from the bevel gear 2 13 is rotatably connected to the inner wall of the movable frame 9, and the outer surface of the threaded rod 2 14 is threadedly connected to the limit block 16, and the inner wall of the movable frame 9 is provided with a sliding groove 2 15, and the outer surface of the limit block 16 is slidably connected to the inner wall of the sliding groove 2 15. Through the cooperation between the bevel gear 11, the bevel gear 2 13 and the threaded rod 2 14, the limit block 16 can realize longitudinal reciprocating movement, and the movement trajectory of the limit block 16 is limited by the sliding groove 2 15, so that the limit block 16 can move stably during the movement.

[0028] See also Figure 1 , Figure 4 The upper surface of the limit block 16 is fixedly connected to a carrier plate 17, the inner wall of the carrier plate 17 is rotatably connected to a worm 18, the outer surface of the worm 18 is meshed with a worm wheel 19, the outer surface of the worm wheel 19 is rotatably connected to the inner bottom wall of the carrier plate 17, and the carrier plate 17 provides the required space for the meshing of the worm 18 and the worm wheel 19. At the same time, the self-locking property between the worm 18 and the worm wheel 19 prevents the workpiece from accidentally loosening during the process of clamping the workpiece, thereby improving the stability of the clamping.

[0029] See also Figure 4 Four connecting rods 20 are rotatably connected to the upper surface of the worm gear 19, and a fixed block 22 is rotatably connected to the upper surface of each connecting rod 20. When the worm gear 19 rotates, one end of the connecting rod 20 close to the worm gear 19 can move with the worm gear 19, and at the same time, the other end of the connecting rod 20 drives the corresponding fixed block 22 to move synchronously.

[0030] See also Figure 4 The upper surface of the carrier plate 17 is provided with four sliding grooves three 21 arranged at equal distances. The inner wall of each sliding groove three 21 is slidably connected to the outer surface of the corresponding fixed block 22. The upper surface of each fixed block 22 is fixedly connected with a clamping plate 23. The bottom surface of each clamping plate 23 is in sliding contact with the upper surface of the carrier plate 17. The sliding groove three 21 limits the movement trajectory of the fixed block 22 and provides a stable supporting force for the fixed block 22. The fixed block 22 drives the corresponding clamping plate 23 to move, so that the clamping plate 23 moves toward the center of the carrier plate 17 until it contacts the workpiece, thereby achieving the effect of being able to clamp workpieces of different shapes and sizes.

[0031] When using the utility model: by placing the workpiece to be processed on the upper surface of the carrier plate 17, the worm gear 19 is driven to rotate by the worm 18, the worm 18 drives the connecting rod 20 to move, and at the same time the connecting rod 20 drives the corresponding fixed block 22 to move synchronously, and the corresponding clamping plate 23 is driven to move toward the center of the carrier plate 17 by the fixed block 22 to fix the workpiece, and the hand wheel 4 is rotated to drive the column gear 2 5 to mesh with the toothed belt 6 and drive the column gear 1 3 to rotate, and the column gear 1 3 drives the corresponding threaded rod 1 2 to rotate, so that the threaded rod 1 2 drives the sliding block 8 and the movable frame 9 to realize horizontal movement, and the bevel gear 1 11 is driven to mesh with the bevel gear 2 13 by rotating the cross rod 10, and the bevel gear 2 13 drives the threaded rod 2 14 to rotate, and at the same time the threaded rod 2 14 drives the limit block 16 to move, so that the limit block 16 moves longitudinally, thereby improving the accuracy of the auxiliary positioning of the workpiece.

[0032] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An auxiliary positioning fixture for milling processing, comprising a base (1), characterized in that: The inner wall of the base (1) is rotatably connected to two threaded rods (2), and one end of each threaded rod (2) away from the base (1) is fixedly connected to a column gear (3). The outer surface of the base (1) is rotatably connected to a hand wheel (4), and the outer surface of the hand wheel (4) is fixedly connected to a column gear (5). The outer surface of the column gear (5) is meshed with a toothed belt (6), and the outer surface of each column gear (3) is meshed with the inner wall of the toothed belt (6). The inner wall of the base (1) is provided with sliding grooves (7) arranged at equal distances. The outer surface of each threaded rod (2) is threadedly connected to a sliding block (8), and the outer surface of each sliding block (8) is slidably connected to the inner wall of the corresponding sliding groove (7). The upper surface of the base (1) is slidably contacted with a movable frame (9), and the outer surface of each sliding block (8) is fixedly connected to the outer surface of the movable frame (9).

2. The auxiliary positioning fixture for milling according to claim 1, characterized in that: The inner wall of the base (1) is rotatably connected to a cross rod (10), the outer surface of the cross rod (10) is rotatably connected to the inside of the movable frame (9), and the outer surface of the cross rod (10) is slidably connected to a bevel gear 1 (11).

3. The auxiliary positioning fixture for milling according to claim 2, characterized in that: A rotating ring (12) is fixedly connected to a side surface of the bevel gear 1 (11) close to the column gear 2 (5), and the outer surface of the rotating ring (12) is rotatably connected to the inside of the movable frame (9).

4. The auxiliary positioning fixture for milling according to claim 3, characterized in that: The outer surface of the bevel gear 1 (11) is meshed with the bevel gear 2 (13), the outer surface of the bevel gear 2 (13) is fixedly connected with the threaded rod 2 (14), one end of the threaded rod 2 (14) away from the bevel gear 2 (13) is rotatably connected to the inner wall of the movable frame (9), the outer surface of the threaded rod 2 (14) is threadedly connected to the limit block (16), the inner wall of the movable frame (9) is provided with a sliding groove 2 (15), and the outer surface of the limit block (16) is slidably connected to the inner wall of the sliding groove 2 (15).

5. The auxiliary positioning fixture for milling according to claim 4, characterized in that: The upper surface of the limit block (16) is fixedly connected to a carrier plate (17), the inner wall of the carrier plate (17) is rotatably connected to a worm (18), the outer surface of the worm (18) is meshed with a worm wheel (19), and the outer surface of the worm wheel (19) is rotatably connected to the inner bottom wall of the carrier plate (17).

6. The auxiliary positioning fixture for milling according to claim 5, characterized in that: Four connecting rods (20) are rotatably connected to the upper surface of the worm wheel (19), and a fixing block (22) is rotatably connected to the upper surface of each connecting rod (20).

7. The auxiliary positioning fixture for milling according to claim 5, characterized in that: The upper surface of the carrier plate (17) is provided with four sliding grooves (21) arranged at equal distances, the inner wall of each sliding groove (21) is slidably connected to the outer surface of the corresponding fixed block (22), the upper surface of each fixed block (22) is fixedly connected to a clamping plate (23), and the bottom surface of each clamping plate (23) is in sliding contact with the upper surface of the carrier plate (17).

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