Multi-axis variable distance screwing machine

Abstract

The utility model relates to industrial automation assembly technical field discloses multi -shaft variable -pitch tightening machine, including axle box baseplate, the axle box baseplate upper surface fixedly connected with the guide shaft, the guide shaft upper surface fixedly connected with the support, the support inner wall is provided with the lifting cylinder, the lifting cylinder output fixedly connected with the connecting shaft, the connecting shaft lower surface fixedly connected with the connecting plate, the connecting plate lower surface fixedly connected with variable -pitch pressure block no.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology in the electrical industry, and in particular to a multi-axis variable pitch tightening machine. Background Technology

[0002] In the assembly production process of modern manufacturing, multi-axis tightening machines, with their ability to simultaneously tighten multiple bolts, have become key equipment for improving assembly efficiency and precision, and are widely used in the automotive, electronics, and machinery industries. However, current equipment can only achieve single-pitch switching within the same number of axes, making it difficult to adapt to the production needs of multiple machine models. Multi-axis pitch systems with dual-dimensional adjustment capabilities can overcome the limitations of the number of axes and pitch circle diameter, and are becoming a core technology direction for promoting flexible production. Especially against the backdrop of the transformation from mass production to multi-variety mixed-line production, the functional shortcomings of traditional equipment and the advantages of multi-axis pitch systems stand in stark contrast, making the need for technological upgrades increasingly urgent.

[0003] Currently, multi-axis tightening machines rely on fixed shaft groups and rigid guide rails to achieve torque variation. The tightening shaft is fixed in a dedicated shaft group, and the shaft group moves along a rigid guide rail with a preset stroke. This method can only meet the needs of changing the torque of the same shaft, has few compatible models, poor versatility, and requires the storage of multiple sets of spare parts, resulting in low equipment utilization efficiency.

[0004] Existing multi-axis tightening machines still have shortcomings. The multi-axis variable pitch system cannot achieve variable pitch for parts with different numbers of shafts and different pitch circle diameters. One machine can only meet the needs of one type of machine, which cannot achieve flexible growth and has low efficiency in improving the use of the equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-axis variable pitch tightening machine, which aims to improve the problems of limited compatibility with various models, inability to achieve flexible growth, and low equipment utilization efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-axis variable pitch tightening machine, comprising a shaft box base plate, a guide shaft fixedly connected to the upper surface of the shaft box base plate, a support plate fixedly connected to the upper surface of the guide shaft, a lifting cylinder provided on the inner wall of the support plate, a connecting shaft fixedly connected to the output end of the lifting cylinder, a connecting plate fixedly connected to the lower surface of the connecting shaft, a variable pitch pressure block II fixedly connected to the lower surface of the connecting plate, a base plate fixedly connected to the lower surface of the variable pitch pressure block II, a cylinder body fixing seat fixedly connected to the upper surface of the base plate, a lifting and retracting cylinder I provided on the outer wall of the cylinder body fixing seat, a piston connecting block fixedly connected to the output end of the lifting and retracting cylinder I, a cylinder piston fixing seat fixedly connected to the outer wall of the piston connecting block, and a variable pitch slide II fixedly connected to the lower surface of the cylinder piston fixing seat, the outer wall of the variable pitch slide II slidably connected to the inner wall of the variable pitch pressure block II.

[0007] Furthermore, the lower surface of the cylinder body fixing seat is fixedly connected to the upper surface of the axle box base plate, and a second lifting cylinder is provided on the outer wall of the cylinder body fixing seat. The output end of the second lifting cylinder is fixedly connected to the cylinder piston fixing seat via a piston connecting block and a third variable pitch slide is slidably connected to the outer wall of the third variable pitch slide. The lower surface of the third variable pitch slide is fixedly connected to the upper surface of the axle box base plate.

[0008] Furthermore, the output end of the lifting cylinder is fixedly connected to the cylinder piston fixing seat via a piston connecting block and a variable pitch slide block, the outer wall of the variable pitch slide block being slidably connected to the inner wall of the variable pitch pressure block.

[0009] Furthermore, a linear bearing is slidably connected to the outer wall of the guide shaft, and the lower surface of the linear bearing is fixedly connected to the upper surface of the base plate.

[0010] Furthermore, a sensor is provided on the outer wall of the lifting cylinder, and a nut is threadedly connected to one end of the sensor.

[0011] Furthermore, the lower surface of the variable pitch slide is slidably connected to the upper surface of the base plate, and the inner wall of the base plate is slidably connected to the outer wall of the guide shaft.

[0012] Furthermore, the lower surface of the variable pitch slide is slidably connected to the upper surface of the axle box base plate.

[0013] Furthermore, the three lower surfaces of the variable pitch slide are slidably connected to the upper surface of the axle box base plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, a telescopic cylinder is installed on the axle box base plate. It drives the tightening shaft, which drives the variable pitch slide to move during the pitch change process, thereby realizing the switching of the pitch circle diameter. The variable pitch pressure block fixes the variable pitch slide and counteracts the reaction force. The adaptive guide rail, in conjunction with the servo drive, supports continuous pitch change. It adopts a modular shaft assembly, eliminating the need to disassemble and replace the entire set of components. Therefore, it can realize the pitch change of parts with different numbers of shafts and different pitch circle diameters, achieving flexible growth and improving the efficiency of equipment use.

[0016] 2. In this utility model, the axle box base plate adopts a universal guide rail mounting hole array on the surface of the base plate. These holes can perfectly adapt to the installation requirements of different axis number modules. The lifting cylinder can lift the tightening shaft when it is not in use. The linear bearing cooperates with the guide shaft to provide sliding guidance for the lifting and lowering of the tightening shaft. The universal guide rail mounting holes are designed on the axle box base plate, which is compatible with different axis number modules. Therefore, the same equipment can meet the needs of multiple models. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the multi-axis variable pitch tightening machine proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the lifting cylinder part of the multi-axis variable pitch tightening machine proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of a portion of the variable pitch slide of the multi-axis variable pitch tightening machine proposed in this utility model.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the linear bearing section of the multi-axis variable pitch tightening machine proposed in this utility model.

[0022] Legend:

[0023] 1. Lifting cylinder; 2. Lifting / retracting cylinder one; 3. Linear bearing; 4. Guide shaft; 5. Shaft box base plate; 6. Cylinder body fixing seat; 7. Pitch-changing pressure block one; 8. Pitch-changing slide one; 9. Cylinder piston fixing seat; 10. Sensor; 11. Support plate; 12. Connecting shaft; 13. Base plate; 14. Nut; 15. Pitch-changing slide two; 16. Piston connecting block; 17. Connecting plate; 18. Pitch-changing pressure block two; 19. Lifting / retracting cylinder two; 20. Pitch-changing slide three. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-3 and Figure 4An embodiment of this utility model provides a multi-axis variable pitch tightening machine, including a shaft box base plate 5. A guide shaft 4 is fixedly connected to the upper surface of the shaft box base plate 5. A support plate 11 is fixedly connected to the upper surface of the guide shaft 4. A lifting cylinder 1 is provided on the inner wall of the support plate 11. A connecting shaft 12 is fixedly connected to the output end of the lifting cylinder 1. A connecting plate 17 is fixedly connected to the lower surface of the connecting shaft 12. A variable pitch pressure block 18 is fixedly connected to the lower surface of the connecting plate 17. A base plate 13 is fixedly connected to the lower surface of the variable pitch pressure block 18. A cylinder body fixing seat 6 is fixedly connected to the upper surface of the base plate 13. A retractable cylinder 2 is provided on the outer wall of the cylinder body fixing seat 6. A piston connecting block is fixedly connected to the output end of the retractable cylinder 2. 16. A cylinder piston fixing seat 9 is fixedly connected to the outer wall of the piston connecting block 16. A variable pitch slide 15 is fixedly connected to the lower surface of the cylinder piston fixing seat 9. The outer wall of the variable pitch slide 15 is slidably connected to the inner wall of the variable pitch pressure block 18. A sensor 10 is provided on the outer wall of the lifting cylinder 1. A nut 14 is threadedly connected to one end of the sensor 10. The lower surface of the variable pitch slide 15 is slidably connected to the upper surface of the base plate 13. The inner wall of the base plate 13 is slidably connected to the outer wall of the guide shaft 4. The sensor 10 installed on the lifting cylinder 1 can sense the cylinder stroke position. The lifting cylinder 1 can raise the height of the lifting cylinder 2. The variable pitch pressure block 18 can make the variable pitch slide 15 slide smoothly.

[0026] Specifically, a lifting cylinder 2 is mounted on the axle box base plate 5, which drives the connecting shaft 12, causing the variable pitch slide 8 to move during the pitch change process, thus achieving the switching of the pitch circle diameter. The variable pitch pressure block 7 fixes the variable pitch slide 8 and counteracts the reaction force. The lifting cylinder 1 can lift the connecting shaft 12 when it is not in use. The linear bearing 3 cooperates with the guide shaft 4 to provide sliding guidance for the lifting and lowering of the connecting shaft 12. The axle box base plate 5 is designed with universal guide rail mounting holes, which are compatible with modules with different number of shafts, thereby improving the efficiency of equipment use.

[0027] Reference Figure 1 and Figures 2-5 The lower surface of the cylinder body fixing seat 6 is fixedly connected to the upper surface of the axle box base plate 5. The outer wall of the cylinder body fixing seat 6 is provided with a second lifting cylinder 19. The output end of the second lifting cylinder 19 is fixedly connected to the cylinder piston fixing seat 9 via the piston connecting block 16. A third variable pitch slide 20 is slidably connected to the outer wall of the third variable pitch slide 20. The lower surface of the first variable pitch slide 7 is fixedly connected to the upper surface of the axle box base plate 5. The output end of the first lifting cylinder 2 is fixedly connected to the cylinder piston fixing seat 9 via the piston connecting block 16. A first variable pitch slide 8 is slidably connected to the inner wall of the first variable pitch slide 8. A linear bearing 3 is slidably connected to the outer wall of the guide shaft 4. The lower surface of the linear bearing 3 is fixedly connected to the upper surface of the base plate 13.

[0028] Specifically, through the linkage between the piston connecting block 16 at the output end of the lifting cylinder 2 19 and the cylinder piston fixing seat 9, the cylinder piston fixing seat 9 is used as an intermediate component for power transmission, which precisely drives the variable pitch slide 2 15 to slide smoothly along the preset straight track, thus realizing the variable pitch function required by the equipment. The execution of the entire variable pitch step ensures the stability of the variable pitch accuracy.

[0029] Working principle: In the multi-axis variable pitch tightening machine, firstly, the lifting cylinder 2 is installed on the axle box base plate 5, which drives the tightening shaft, which in turn drives the variable pitch slide 8 to move during the pitch change process, thereby realizing the switching of the pitch circle diameter. The variable pitch pressure block 7 fixes the variable pitch slide 8 and counteracts the reaction force. Secondly, the lifting cylinder 1 can lift the tightening shaft when it is not in use. The linear bearing 3 cooperates with the guide shaft 4 to provide sliding guidance for the lifting and lowering of the tightening shaft. The axle box base plate 5 is designed with universal guide rail mounting holes to accommodate modules with different number of shafts. In addition, one of the lifting cylinders 2 and its bottom plate 13 is controlled by the lifting cylinder 1 to lift and lower. The stroke of the lifting cylinder 19 is different from that of the lifting cylinder 2. Therefore, the extension lengths of the variable pitch slide 8 and the variable pitch slide 3 20 connected to it are also very different. The difference in extension lengths of the variable pitch slide 8 and the variable pitch slide 3 20 leads to a difference in the length of the variable pitch pressure block 7 and the variable pitch pressure block 18 on their outer walls. The variable pitch step can be completed by using the piston connecting block 16 at the output end of the lifting cylinder 19 to drive the variable pitch slide 15 to make linear sliding motion through the cylinder piston fixing seat 9.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-axis variable pitch tightening machine, comprising an axle box base plate (5), characterized in that: A guide shaft (4) is fixedly connected to the upper surface of the axle box base plate (5). A support plate (11) is fixedly connected to the upper surface of the guide shaft (4). A lifting cylinder (1) is provided on the inner wall of the support plate (11). A connecting shaft (12) is fixedly connected to the output end of the lifting cylinder (1). A connecting plate (17) is fixedly connected to the lower surface of the connecting shaft (12). A variable pitch pressure block II (18) is fixedly connected to the lower surface of the connecting plate (17). A base plate (13) is fixedly connected to the lower surface of the variable pitch pressure block II (18). The upper surface of the base plate (13) is fixedly connected to a cylinder body fixing seat (6). The outer wall of the cylinder body fixing seat (6) is provided with a first lifting cylinder (2). The output end of the first lifting cylinder (2) is fixedly connected to a piston connecting block (16). The outer wall of the piston connecting block (16) is fixedly connected to a cylinder piston fixing seat (9). The lower surface of the cylinder piston fixing seat (9) is fixedly connected to a second variable pitch slide (15). The outer wall of the second variable pitch slide (15) is slidably connected to the inner wall of the second variable pitch pressure block (18).

2. The multi-axis variable pitch tightening machine according to claim 1, characterized in that: The lower surface of the cylinder body fixing seat (6) is fixedly connected to the upper surface of the axle box base plate (5). The outer wall of the cylinder body fixing seat (6) is provided with a second lifting cylinder (19). The output end of the second lifting cylinder (19) is fixedly connected to the cylinder piston fixing seat (9) via a piston connecting block (16) and a third variable pitch slide (20). The outer wall of the third variable pitch slide (20) is slidably connected to a first variable pitch pressure block (7). The lower surface of the first variable pitch pressure block (7) is fixedly connected to the upper surface of the axle box base plate (5).

3. The multi-axis variable pitch tightening machine according to claim 1, characterized in that: The output end of the lifting cylinder (2) is fixedly connected to the cylinder piston fixing seat (9) via the piston connecting block (16) and the variable pitch slide (8). The outer wall of the variable pitch slide (8) is slidably connected to the inner wall of the variable pitch pressure block (7).

4. The multi-axis variable pitch tightening machine according to claim 1, characterized in that: The outer wall of the guide shaft (4) is slidably connected to a linear bearing (3), and the lower surface of the linear bearing (3) is fixedly connected to the upper surface of the base plate (13).

5. The multi-axis variable pitch tightening machine according to claim 1, characterized in that: A sensor (10) is provided on the outer wall of the lifting cylinder (1), and a nut (14) is threadedly connected to one end of the sensor (10).

6. The multi-axis variable pitch tightening machine according to claim 1, characterized in that: The lower surface of the variable pitch slide block (15) is slidably connected to the upper surface of the base plate (13), and the inner wall of the base plate (13) is slidably connected to the outer wall of the guide shaft (4).

7. The multi-axis variable pitch tightening machine according to claim 3, characterized in that: The lower surface of the variable pitch slide (8) is slidably connected to the upper surface of the axle box base plate (5).

8. The multi-axis variable pitch tightening machine according to claim 2, characterized in that: The lower surface of the variable pitch slide block (20) is slidably connected to the upper surface of the axle box base plate (5).

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