Mechanical abdicating rotating mechanism

Abstract

The utility model provides a mechanical abdicating rotating mechanism, which belongs to the field of mechanical structures and comprises a workbench, a linear guide rail module, a rotating driving module, a tool seat and a pulley. The linear guide rail module is arranged on the workbench, and the length of the linear guide rail module is smaller than that of a long shaft of the oval slide way. The rotation driving module is installed below the workbench so as to drive the linear guide rail module to rotate along the oval sliding way. The tool base is arranged on a sliding block of the linear guide rail module. The pulley is connected to the tool seat; the pulley slides along the oval slide way and drives the tool base to linearly move along the linear guide rail module. According to the mechanical receding rotating mechanism provided by the utility model, aiming at limited spaces which are inconsistent in length and width and cannot adopt a circular rotating worktable to rotate a workpiece, the elliptical slide way is arranged on the worktable, so that the space can be utilized to the maximum extent to realize rotation of the workpiece, the space utilization rate of equipment is improved, and the working efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical structures, and in particular relates to a mechanical yielding rotation mechanism. Background Art

[0002] As a machine tool accessory for clamping and positioning workpieces, the rotary table is commonly used in hydraulic presses, presses, reducing machines, lathes and other mechanical equipment. The current rotary table adopts a circular motion trajectory, which occupies a large space. In a limited space, the rotation radius of the rotary table can only be reduced to avoid other structures in the limited space. Some space cannot be effectively used, so it is impossible to optimize the use of space, which reduces the space utilization of the equipment. Utility Model Content

[0003] The embodiment of the utility model provides a mechanical yielding rotation mechanism, which aims to solve the problem of limited utilization of a rotary workbench in a limited space.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a mechanical yielding rotation mechanism, comprising:

[0005] A workbench, on which an elliptical slide is provided;

[0006] A linear guide rail module is arranged on the workbench, and the length of the linear guide rail module is smaller than the length of the major axis of the elliptical slideway;

[0007] A rotation drive module is installed below the workbench to drive the linear guide rail module to rotate along the elliptical slideway;

[0008] A tooling seat, arranged on a slider of the linear guide rail module; and

[0009] The pulley is connected to the tooling seat through a bracket; the pulley slides along the elliptical slideway and drives the tooling seat to move linearly along the linear guide rail module.

[0010] In one feasible manner, the bracket includes a support block arranged at the bottom of the tooling seat and a connecting block connected to the support block, the pulley is connected to the connecting block, and the lower end of the support block is provided with a ball supported on the workbench; the ball and the slider constitute a three-point support of the tooling seat.

[0011] In one achievable manner, the tooling seat includes a movable plate and a tooling plate disposed on the movable plate, the movable plate is connected to the slider, and an elastic member is disposed between the tooling plate and the movable plate.

[0012] In one achievable manner, a guide column is provided on the tooling plate, a guide hole slidably matched with the guide column is provided on the movable plate, and the elastic member is sleeved on the guide column.

[0013] In one achievable manner, a countersunk hole for positioning the elastic member is provided at the upper end of the guide hole.

[0014] In one achievable manner, the workbench is symmetrically provided with proximity switches at both ends along the major axis of the elliptical slideway; and a proximity switch sensing baffle is provided on the tooling seat.

[0015] In one achievable manner, the linear guide rail module connects two parallel linear guide rails together through a base, and provides a connecting plate for connecting and supporting the rotary drive module.

[0016] In one achievable manner, the base includes two parallel cross bars, the connecting plate is connected between the two cross bars, and the linear slide rail is disposed on the cross bars.

[0017] In one practicable manner, anti-slip baffles are respectively provided at both ends of the cross bar.

[0018] In a feasible manner, two groups of tooling seats are included, and the two groups of tooling seats are respectively arranged on different sliders of the linear guide rail module; the tooling seats are driven by the pulley and move along the linear guide rail module respectively.

[0019] Compared with the prior art, the mechanical yielding rotating mechanism provided by the utility model has the following beneficial effects: for the confined space with inconsistent length and width and unable to use a circular rotary table to rotate the workpiece, an elliptical slide is set on the workbench in the confined space, and under the drive of the rotary drive module, the linear guide module performs a circular rotary motion, and the pulley drives the tooling seat to perform an elliptical motion along the elliptical slide; specifically, the tooling seat is constrained by the pulley and the linear guide module, and when the pulley moves to the long axis end of the elliptical slide, the tooling seat moves to both sides along the linear guide module under the drive of the pulley, and the workpiece moves to the end of the linear guide module with the tooling seat; when the pulley moves to the short axis end of the elliptical slide, the pulley drives the tooling seat to move to the middle of the linear guide module, so as to avoid the narrow space. Therefore, when the mechanical yielding rotating mechanism provided by the present application is applied to a space with inconsistent length and width, the space can still be used to the maximum extent to realize the rotation of the workpiece, and two tooling seats can be arranged, thereby improving the space utilization rate of the equipment and improving the working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the mechanical yielding rotation mechanism provided in an embodiment of the utility model (top view);

[0021] Figure 2 A schematic diagram of the three-dimensional structure of the mechanical yielding rotation mechanism provided in an embodiment of the utility model (viewed from above);

[0022] Figure 3 A schematic diagram of the front view structure of the mechanical yielding rotation mechanism provided in an embodiment of the utility model (the linear guide rail module rotates to the short axis direction of the elliptical slideway);

[0023] Figure 4 A schematic diagram of the front view structure of the mechanical yielding rotation mechanism provided in an embodiment of the utility model (the linear guide rail module rotates to the long axis direction of the elliptical slideway);

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the tooling seat provided in the embodiment of the utility model (top view);

[0025] Figure 6 A schematic diagram of the three-dimensional structure of the tooling seat provided in the embodiment of the utility model (viewed from above);

[0026] Figure 7 A schematic diagram of the three-dimensional structure of a workbench and a linear guide rail module provided in an embodiment of the utility model (top view);

[0027] Figure 8 A schematic diagram of the three-dimensional structure of a linear guide rail module provided in an embodiment of the utility model (top view);

[0028] Fig. 9 A schematic diagram of the three-dimensional structure of a workbench provided in an embodiment of the utility model (top view);

[0029] Fig.10 A schematic diagram of a three-dimensional structure of a mechanical yielding rotating mechanism provided by an embodiment of the utility model installed on a press machine;

[0030] Description of reference numerals:

[0031] 1. Workbench; 11. Elliptical slide; 2. Linear guide module; 21. Anti-slip baffle; 22. Linear slide; 23. Crossbar; 24. Slider; 25. Connecting plate; 3. Proximity switch sensing baffle; 4. Fixture seat; 41. Elastic part; 42. Fixture plate; 43. Moving plate; 44. Ball bearing; 45. Support block; 46. Connecting block; 47. Pulley; 5. Proximity switch; 6. Rotation drive module; 7. Column. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Please also read Figures 1 to 9 , the mechanical yielding rotation mechanism provided by the utility model is now described. The mechanical yielding rotation mechanism includes: a workbench 1, a linear guide rail module 2, a rotation drive module 6, a tooling seat 4 and a pulley 47. The workbench 1 is provided with an elliptical slide 11; the linear guide rail module 2 is provided on the workbench 1, and the length of the linear guide rail module 2 is less than the length of the long axis of the elliptical slide 11; the rotation drive module 6 is installed below the workbench 1 to drive the linear guide rail module 2 to rotate along the elliptical slide 11; the tooling seat 4 is provided on the slider 24 of the linear guide rail module 2; the pulley 47 is connected to the tooling seat 4 through a bracket; the pulley 47 slides along the elliptical slide 11, and drives the tooling seat 4 to move linearly along the linear guide rail module 2.

[0034] The mechanical yielding rotation mechanism provided by the utility model is aimed at the limited space where the length and width are inconsistent and the circular rotary table 1 cannot be used to rotate the workpiece. By arranging an elliptical slideway 11 on the worktable 1, the linear guide module 2 performs a circular rotation motion under the drive of the rotation drive module 6, and the pulley 47 performs an elliptical motion along the elliptical slideway 11; the tooling seat 4 is constrained by the pulley 47 and the linear guide module 2, and when the pulley 47 moves to the long axis end of the elliptical slideway 11, the tooling seat 4 moves to both sides along the linear guide module 2 under the drive of the pulley 47, and the workpiece moves to the end of the linear guide module 2 (such as Figure 4 When the pulley 47 moves to the short axis end of the elliptical slide 11, the pulley 47 drives the tooling seat 4 to move toward the middle of the linear guide module 2, thereby avoiding a narrow space position (such as Figure 3 As shown). Therefore, when the mechanical yielding rotation mechanism provided by the present application is applied to a space with inconsistent length and width, the space can still be used to the maximum extent to realize the rotation of the workpiece, and two tooling seats 4 can be arranged to improve the space utilization rate of the equipment and improve the working efficiency of the equipment.

[0035] Among them, the length of the linear guide module 2 is less than the length of the long axis of the elliptical slide 11, and it is ensured that the linear guide module 2 can pass through the short axis position of the elliptical slide 11. The rotation center of the linear guide module 2 can be located at the center of the elliptical slide 11, or it can be offset to the center of the elliptical slide 11, and the offset part can be compensated by the movement of the tooling seat 4. When the rotation center of the linear guide module 2 does not coincide with the center of the elliptical slide 11, the entire mechanism forms an asymmetric structure, and the linear guide module 2 can realize the avoidance trajectory of the tooling seat 4 in the confined space and move to the target position through the rotation of the linear guide module 2 with the rotation drive module 6 and the movement of its own slider.

[0036] Optionally, the rotation driving module 6 is a cam divider, or a structure in which a motor drives the gear ring to rotate.

[0037] like Fig.10 As shown, the application examples of the mechanical yielding rotation mechanism provided in this embodiment are as follows:

[0038] Applied to a hydraulic press or a four-column press with four columns 7, when the length and width of the quadrilateral formed by the four columns 7 are inconsistent, if the rotary table is made with the long side as the diameter, it will be blocked by the columns 7 at the wide side; if the rotary table is made with the short side as the diameter, the long side direction will be idle and unused. Therefore, when the length and width of the four columns 7 are inconsistent, an elliptical slide 11 can be set on the workbench, with the long axis of the elliptical slide 11 arranged along the long side direction and the short axis arranged along the short side direction. By using the linear movement of the tooling seat 4 along the linear guide module 2, the columns 7 in the short side direction can be avoided, thereby realizing the reduction of the diameter and press-fitting of the workpiece. The operating principle is as follows: the pulley 47 is connected to the tooling seat 4, and the pulley 47 makes an elliptical motion on the elliptical slide 11 under the drive of the cam divider. When the pulley 47 moves to the long axis of the elliptical slide 11, the tooling seat 4 extends to both sides along the linear guide module 2; when the pulley 47 moves to the short axis of the elliptical slide 11, the pulley 47 drives the tooling seat 4 to move to the middle of the linear guide module 2, thereby avoiding the Green column (also known as the column) of the four-column press.

[0039] The pulley 47 drives the tooling seat 4 to reciprocate along the linear guide rail module 2, and the motion trajectory is linear; when the tooling seat 4 needs to stop, the cam divider and the proximity switch configured on the workbench jointly control the stop position to ensure accurate positioning.

[0040] The mechanical yielding rotating mechanism provided by the utility model can realize the avoidance trajectory and freely control the target position reached in an irregular confined space based on the rotary drive module and the linear guide module. It has a simple structure, low processing difficulty, low production cost, does not need to rely on complex electronic structure and electronic control program, and has reliable and stable working performance. It can be used in occasions where the space is irregular or the length and width are inconsistent and avoidance of surrounding components is required, or in special positioning scenes. It has good ductility along the long axis direction, can make full use of the space, improve the use efficiency of the equipment, and reduce space waste.

[0041] In some embodiments, Figure 5 and Figure 6 As shown, the bracket includes a support block 45 arranged at the bottom of the tooling seat 4 and a connection block 46 connected to the support block 45, a pulley 47 is connected to the connection block 46, and a ball 44 supported on the workbench 1 is arranged at the lower end of the support block 45; the ball 44 and the slider 24 constitute a three-point support for the tooling seat 4. The pulley 47 slides along the elliptical slideway 11, and while driving the tooling seat 4 to rotate with the rotation center of the linear guide module 2, the motion trajectory also changes with the radius of the elliptical slideway 11 from time to time, and moves linearly along the linear guide module 2, so that the tooling seat 4 forms an elliptical motion trajectory; the ball 44 has a supporting effect on the tooling seat 4, so that the tooling seat 4 forms a coplanar three-point support formed by the slider 24 and the ball 44, ensuring the level of the end face of the tooling seat 4.

[0042] Preferably, 1-3 balls 44 may be provided corresponding to one tooling seat 4 to ensure the horizontal balance position of the tooling seat 4 .

[0043] Specifically, the support block 45 is connected to the moving plate 43 by bolts, and the connecting block 46 is connected to the support block 45 by bolts, and the connecting block 46 is on the outside of the support block 45. The proximity switch sensing baffles 3 arranged at both ends of the short shaft can be fixed on the connecting block 46, and the proximity switch sensing baffles 3 are located on the inner side of the linear guide module 2.

[0044] In some embodiments, Figure 5 and Figure 6 As shown, the tooling seat 4 includes a moving plate 43 and a tooling plate 42 disposed on the moving plate 43, the moving plate 43 is connected to the slider 24, and an elastic member 41 is disposed between the tooling plate 42 and the moving plate 43. The elastic member 41 has an elastic buffering effect on the workpiece disposed on the tooling plate 42, especially for the reduction and press-fitting operation of the rubber tube, the buffering effect of the elastic member 41 has a protective effect on the equipment, the tooling seat 4 and the workpiece, thereby avoiding damage to various components or related components caused by impact force.

[0045] In some embodiments, Figure 5 and Figure 6As shown, a guide post is provided on the tooling plate 42, a guide hole for slidingly matching the guide post is provided on the movable plate 43, and the elastic member 41 is sleeved on the guide post. The guide post is a screw, which is screwed on the tooling plate 42. When the tooling plate 42 is pressed and moves downward, the guide post is driven to slide along the guide hole. Optionally, a plurality of guide posts are evenly distributed in a circular shape on the tooling plate 42.

[0046] In some embodiments, Figure 5 and Figure 6 As shown, a countersink is provided at the upper end of the guide hole for positioning the elastic member 41. The diameter of the countersink is larger than the aperture of the guide hole, and the elastic member 41 is supported and positioned.

[0047] Optionally, the elastic member 41 is a spring or a rubber sleeve.

[0048] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the workbench 1 is symmetrically provided with proximity switches 5 at both ends of the long axis of the elliptical slide 11, and the tooling seat 4 is provided with a proximity switch sensing baffle 3. When the tooling seat 4 rotates and moves to the proximity switches 5 at both ends of the long axis of the elliptical slide 11, the proximity switch sensing baffle 3 on the tooling seat 4 senses the position of the proximity switch 5, and when the proximity switch 5 is linearly aligned with the proximity switch sensing baffle 3, the cam divider and the linear guide module 2 stop working, and the tooling seat 4 and the tooling thereon can stop.

[0049] In this embodiment, the cam divider can realize the primary positioning of the tooling seat 4, and the cooperation of the proximity switch 5 and the proximity switch sensing baffle 3 can realize the secondary positioning of the tooling seat 4. The cam divider and the proximity switch 5 can jointly control the stop position to ensure the accurate positioning of the mechanism and minimize the positioning abnormality, which leads to the problem of inaccurate positioning of the tooling clamped on the tooling seat 4, thereby causing the problem of unqualified products due to processing, diameter reduction and press-fitting misalignment. Therefore, the accuracy of the overall positioning of the mechanism is the basis for ensuring the processing accuracy of the processed products.

[0050] In some embodiments, Figure 1 , Figure 7 and Fig. 9 As shown, the linear guide rail module 2 includes a base and two parallel linear guide rails 22 arranged on the base, the base includes two parallel cross bars 23 and a connecting plate 25 connected between the two cross bars 23, and the connecting plate 25 is connected to the driving shaft of the rotary drive module 6; the linear guide rails 22 are arranged on the cross bars 23. The two linear guide rails 22 support the tooling seat 4, which not only improves the stability of the tooling seat 4, but also ensures the horizontality of the upper end surface of the tooling seat 4.

[0051] In some embodiments, Figure 1 , Figure 7and Fig. 9 As shown, anti-drop baffles 21 are respectively provided at both ends of the crossbar, which prevent the slider 24 from falling off through a mechanical structure, and can still ensure reliable limiting when the electric control fails.

[0052] In some embodiments, Figures 1 to 10 As shown, it includes two groups of tooling seats 4, and the two groups of tooling seats 4 are respectively arranged on different sliders 24 of the linear guide module 2; the tooling seats 4 are respectively moved along the linear guide module 2 driven by the pulley 47. Two groups of tooling seats 4 are arranged on the linear guide module 2, so that the diameter can be reduced on one group of tooling seats 4, and the other group of tooling seats 4 can be pressed at the same time, which greatly improves the use efficiency of equipment such as hydraulic presses or presses; the two groups of tooling seats 4 can also be reduced or pressed at the same time, which also improves the use efficiency of the equipment. Therefore, the mechanical yielding rotation mechanism provided by the utility model can avoid the limited space where the distance between the columns 7 is shorter, through the elliptical slide 11, and the space where the distance between the columns 7 is larger can also be well utilized, which not only improves the space utilization rate of the equipment, but also improves the production efficiency of the equipment.

[0053] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical yielding rotation mechanism, characterized in that: include: A workbench (1) on which an elliptical slideway (11) is arranged; A linear guide rail module (2) is arranged on the workbench (1), and the length of the linear guide rail module (2) is smaller than the length of the major axis of the elliptical slideway (11); A rotation drive module (6) is installed below the workbench (1) to drive the linear guide rail module (2) to rotate along the elliptical slideway (11); A tooling seat (4) is arranged on a slider (24) of the linear guide rail module (2); and The pulley (47) is connected to the tooling seat (4) through a bracket; the pulley (47) slides along the elliptical slideway (11) and drives the tooling seat (4) to move linearly along the linear guide rail module (2).

2. The mechanical yielding rotation mechanism according to claim 1, characterized in that: The bracket comprises a support block (45) arranged at the bottom of the tooling seat (4) and a connecting block (46) connected to the support block (45); the pulley (47) is connected to the connecting block (46); a ball bearing (44) supported on the workbench (1) is arranged at the lower end of the support block (45); the ball bearing (44) and the slider (24) constitute a three-point support for the tooling seat (4).

3. The mechanical yielding rotation mechanism according to claim 1, characterized in that: The tooling seat (4) comprises a movable plate (43) and a tooling plate (42) arranged on the movable plate (43); the movable plate (43) is connected to the slider (24); and an elastic member (41) is arranged between the tooling plate (42) and the movable plate (43).

4. The mechanical yielding rotation mechanism according to claim 3, characterized in that: The tooling plate (42) is provided with a guide column, the movable plate (43) is provided with a guide hole that slidably matches the guide column, and the elastic member (41) is sleeved on the guide column.

5. The mechanical yielding rotation mechanism according to claim 4, characterized in that: A countersunk hole for positioning the elastic member (41) is provided at the upper end of the guide hole.

6. The mechanical yielding rotation mechanism according to claim 1, characterized in that: The workbench (1) is symmetrically provided with proximity switches (5) at both ends along the long axis of the elliptical slideway (11); and the tooling seat (4) is provided with a proximity switch induction baffle (3).

7. The mechanical yielding rotation mechanism according to claim 1, characterized in that: The linear guide rail module (2) connects two parallel linear slide rails (22) together via a base, and provides a connecting plate (25) for connecting and supporting the rotary drive module (6).

8. The mechanical yielding rotation mechanism according to claim 7, characterized in that: The base comprises two parallel cross bars (23), the connecting plate (25) is connected between the two cross bars (23), and the linear slide rail (22) is arranged on the cross bars (23).

9. The mechanical yielding rotation mechanism according to claim 8, characterized in that: Anti-slip baffles (21) are respectively arranged at both ends of the crossbar.

10. The mechanical yielding rotation mechanism according to any one of claims 1 to 9, characterized in that: It comprises two groups of tooling seats (4), which are respectively arranged on different sliders (24) of the linear guide rail module (2); the tooling seats (4) are respectively moved along the linear guide rail module (2) under the drive of the pulley (47).

Images