Thermos cup polishing machine force control device

Abstract

The present invention provides a force control device for a thermos cup polishing machine, which mainly includes an elastic mechanism, a guide mechanism, an adjustment mechanism, a sliding mechanism, and a main motion mechanism. The concept of bionic design is adopted to imitate the control method of polishing force in manual polishing. Accordingly, the machine is easy to operate, and the magnitude of the force can be controlled by manually adjusting the adjustment mechanism; the structure is simple, and only a simple device needs to be added to the original CNC processing equipment; the adaptability is wide, and different magnitudes of force can be adjusted according to different cups; the force control effect is good, and the same batch of workpieces with large tolerances can be polished, avoiding over-polishing and under-polishing, and increasing the yield of the polishing process.

Description

Technical Field

[0001] The invention relates to polishing processing equipment, in particular to a force control device for a thermos cup polishing machine. Background Art

[0002] The intelligent special-shaped thermos cup polishing machine forms a polishing path through teaching (or writing CNC code). It can process thermos cups with a shape tolerance within ±0.2mm well, and the processing consistency and efficiency are better than manual.

[0003] However, since the thermos cup is a thin-walled product, many low-end thermos cups do not have a good control of the production process in the front-end processing to control the precision of the semi-finished products, and the processing error is large. In the polishing process, the shape tolerance of cups of the same shape can reach 2~3mm, and even the naked eye can see the obvious difference in shape. If the polishing path is completely based on the CNC trajectory, some low-end cups with large tolerances will not be polished or over-polished. After a batch, the proportion of completely successful polishing is relatively low. If you blindly require to increase the shape tolerance requirements of each batch under the existing front-end production conditions, it will inevitably increase the inspection time, and increase the batches, teaching or programming time.

[0004] How to use the same CNC machining path data to polish a batch of thermos cup semi-finished products (thin-walled rotating bodies) with a larger shape tolerance (for example, ±2mm) so that the CNC system has a wider adaptability has become a technical problem that the present invention needs to solve. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a force control device for a thermos cup polishing machine, whose purpose is to enable the processing program to adapt to workpieces with wider tolerances during CNC polishing processing, so that a wider range of workpieces can be processed in one teaching or programming, and the yield of semi-finished products with large differences in the previous process after polishing processing can be improved.

[0006] The polishing machine processes the outer surface of a rotating body with thin walls and large shape tolerance.

[0007] The X-axis, Y-axis and Z-axis are defined in a rectangular coordinate system, and the three axes are perpendicular to each other.

[0008] In order to achieve the above object, the present invention provides a force control device for a thermos cup polishing machine, comprising:

[0009] an elastic mechanism for generating a force;

[0010] a guide mechanism connected to the elastic mechanism, and the elastic mechanism reciprocates;

[0011] an adjustment mechanism, the adjustment mechanism being used to adjust the magnitude of the force generated by the elastic mechanism;

[0012] a sliding mechanism, the sliding mechanism is connected to the guide mechanism, and the sliding mechanism is used to drive a workpiece or a tool to slide along an axial direction;

[0013] A main motion mechanism provides the main motion of the workpiece or the tool according to the position data of the numerical control machining.

[0014] Preferably, the elastic mechanism comprises a spring, and deformation of the spring generates the force.

[0015] Preferably, the guide mechanism comprises a guide rod and a limit block, one end of the guide rod is connected to the limit block, and the spring is sleeved outside the guide rod.

[0016] Preferably, the adjustment mechanism comprises an adjustment screw and a connection block, the connection block is fixedly connected to the main motion mechanism, the adjustment screw is spirally connected to the connection block, and one end of the adjustment screw contacts the spring.

[0017] Preferably, the sliding mechanism comprises a guide rail and a slider, the guide rail is connected to the main motion mechanism, the slider is slidably connected to the guide rail, the slider is connected to a main seat plate, the main seat plate is connected to the workpiece or the tool, and the limit block is connected to the main seat plate.

[0018] Preferably, the guide rail is a ball guide rail.

[0019] Preferably, the main motion mechanism is further provided with a second limiter, the second limiter and the first limiter block are used to limit the sliding range of the slider, and the second limiter includes a protrusion or a groove.

[0020] Preferably, it also includes an indicating mechanism, which includes a pointer and a scale for indicating the magnitude of the force generated by the elastic mechanism, the pointer is connected to the adjusting screw, and the scale is connected to the main motion mechanism or the connecting block.

[0021] Preferably, the adjustment mechanism further comprises a hand wheel, and the hand wheel is connected to the adjustment screw.

[0022] Preferably, it also includes a fuselage, and the main motion mechanism includes a circular plate, which rotates around the Z axis relative to the fuselage, slides along the X axis, and moves along the Y axis. The movement of the circular plate relative to the fuselage is controlled by the position data of CNC machining.

[0023] Compared with the prior art, the present invention provides a force control device for a thermos cup polishing machine, which mainly includes an elastic mechanism, a guide mechanism, an adjustment mechanism, a sliding mechanism, and a main motion mechanism. The concept of bionic design is adopted to imitate the control method of polishing force in manual polishing. Accordingly, the machine is easy to operate. The force can be controlled by manually adjusting the adjustment mechanism. The structure is simple, and only a simple device needs to be added to the original CNC processing equipment. The adaptability is wide, and different forces can be adjusted according to different cups. The force control effect is good, and the same batch of workpieces with large tolerances can be polished, avoiding over-polishing and under-polishing, and increasing the yield of the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereoscopic diagram of an embodiment of a force control device for a thermos cup polishing machine of the present invention.

[0025] Figure 2 This is a three-dimensional diagram of an embodiment of a force control device for a thermos cup polishing machine of the present invention installed on a partial mechanism of the polishing machine.

[0026] Figure 3 It is a schematic diagram of an embodiment of a force control device for a thermos cup polishing machine of the present invention.

[0027] Description of Figure Numbers.

[0028] Elastic mechanism 1

[0029] Spring 11

[0030] Guide mechanism 2

[0031] Guide rod 21

[0032] Limit block 22

[0033] Adjustment mechanism 3

[0034] Adjusting screw 31

[0035] Connection block 32

[0036] Handwheel 33

[0037] Sliding mechanism 4

[0038] Guide Rail 41

[0039] Ball guide 41a

[0040] Slider 42

[0041] Main seat plate 43

[0042] Main motion mechanism 5

[0043] Limit 2 51

[0044] Round plate 52

[0045] Indicator 6

[0046] Pointer 61

[0047] Scale 62

[0048] Artifact 71

[0049] Tool 72

[0050] Body 8. DETAILED DESCRIPTION

[0051] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0052] Most of the surfaces of thermos cups are revolving surfaces, which are curved surfaces formed by the rotation of the generatrix around the axis. According to this characteristic, the axis and generatrix of the revolving surface can be determined to completely restore the revolving surface. Polishing tools are usually also revolving bodies (basically cylinders).

[0053] like Figure 1 As shown, a stereoscopic diagram of a force control device of a thermos cup polishing machine is shown in a right-angle coordinate system (X-axis, Y-axis, and Z-axis). The present invention provides a force control device of a thermos cup polishing machine, including an elastic mechanism 1 for generating a force parallel to the main cutting force between a workpiece 71 and a tool 72 (not shown in the figure, the blank space to be installed in this embodiment is the workpiece 71). A guide mechanism 2, wherein the guide mechanism 2 is connected to the elastic mechanism 1, so that the elastic mechanism 1 reciprocates under the support of the guide mechanism 2. An adjustment mechanism 3, wherein the adjustment mechanism 3 is used to adjust the magnitude of the force generated by the elastic mechanism 1, so as to adjust the processing force during the processing. A sliding mechanism 4, wherein the sliding mechanism 4 is connected to the guide mechanism 2, and the sliding mechanism 4 is used to drive the workpiece 71 or the tool 72 to slide along an axial direction. From a processing plane, the workpiece 71 and the tool 72 can be in better contact at the polishing point and have better cutting force. The main motion mechanism 5 provides the main motion of the workpiece 71 or the tool 72 according to the position data of the CNC machining. The main motion mechanism is fixedly connected to the original CNC-driven actuator, so as to follow the movement of the original actuator (main motion). However, relatively speaking, the movement or force generated by the force control device is auxiliary and small, and is a secondary motion. Figure 2 A stereoscopic diagram showing the force control device of the thermos cup polishing machine installed on a part of the polishing machine can be shown. The final compound motion of the polishing machine, i.e., rotation around the Z axis, sliding along the X axis, and motion along the Y axis, is realized on the main motion mechanism.

[0054] The elastic mechanism 1 includes a spring 11, and the deformation of the spring 11 generates the force. The operator can adjust the magnitude of the force by adjusting the magnitude of the deformation.

[0055] The guide mechanism 2 includes a guide rod 21 and a stop block 22. One end of the guide rod 21 is connected to the stop block 22, and the other end can be freely set. The guide rod is a cantilever structure, and the spring 11 is sleeved outside the guide rod 21. Thus, the spring 11 can reciprocate along the axial direction of the guide rod. The spring 11 can be a coil spring-compression spring.

[0056] The adjustment mechanism 3 includes an adjustment screw 31 and a connection block 32. The connection block 32 is fixedly connected to the main motion mechanism 5. The adjustment screw 31 is connected to the connection block 32 in a spiral motion. One end of the adjustment screw 31 contacts the spring 11. When the adjustment screw 31 rotates, the connection block does not move relative to the main motion mechanism 5, and the adjustment screw 31 moves forward or backward along the axis relative to the main motion mechanism. However, one end of the adjustment screw 31 contacts the spring 11, which pushes the spring to compress or release its elastic force.

[0057] The sliding mechanism 4 comprises a guide rail 41 and a slider 42, wherein the guide rail 41 is connected to the main motion mechanism 5, the slider 42 is slidably connected to the guide rail 41, the slider 42 is connected to a main seat plate 43, the main seat plate 43 is connected to the workpiece 71 or the tool 72, and the stop block 22 is connected to the main seat plate 43. Thus, on the sliding mechanism, the workpiece 71 or the tool 72 can perform a slight movement in a direction parallel to the main polishing force.

[0058] The guide rail 41 is a ball guide rail 41a. The ball guide rail 41a can provide smaller resistance, so that the polishing force can be better controlled.

[0059] The main motion mechanism 5 is also provided with a second limiter 51 (not shown in the figure). The second limiter 51 and the limiter block 22 are used to limit the sliding range of the slider. The second limiter 51 includes a protrusion or a groove. When the second limiter 51 includes a protrusion arranged on the main motion mechanism 5, the protrusion has a surface arranged relative to the limiter block 22, and when the surface of the protrusion and the surface of the limiter block 22 collide, the sliding range is limited. When the second limiter 51 includes a groove arranged on the main motion mechanism 5, part of the limiter block 22 extends into the groove, the groove has a certain length in the motion direction, the inner wall of the groove is arranged relative to the limiter block 22, and when the wall of the groove and the surface of the limiter block 22 collide, the sliding range is limited.

[0060] The force control device of the thermos cup polishing machine also includes an indicating mechanism 6, which includes a pointer 61 and a scale 62 for indicating the magnitude of the force generated by the elastic mechanism 1. The pointer 61 is connected to the adjusting screw 31, and the scale 62 is connected to the main motion mechanism 5 or the connecting block 32.

[0061] The adjusting mechanism 3 further includes a hand wheel 33 , and the hand wheel 33 is connected to the adjusting screw rod 31 .

[0062] The force control device of the thermos cup polishing machine also includes a machine body 8, and the main motion mechanism 5 includes a circular plate 52. The circular plate 52 rotates around the Z axis relative to the machine body 8, slides along the X axis, and moves along the Y axis. The movement of the circular plate 52 relative to the machine body 8 is controlled by the position data of the CNC machining. The main motion mechanism mainly provides the movement of the actuator of the original CNC machining machine.

[0063] The above is the technical solution of the present invention, and the technical solution of the present invention is mainly a description of the above-mentioned component structure and connection relationship. The beneficial effect brought by the present invention is that the torque control device of the thermos cup polishing machine provided by the present invention is easy to operate and convenient for manual operation. Manually, the control force can be adjusted according to the position indicated by the pointer by rotating the hand wheel. The structure is simple and the manufacturing cost is relatively low, so that many manufacturers can afford it. It is easy to use, and the polishing force can be adjusted at any time according to the requirements of the cup to be polished (such as different thicknesses, different shape tolerances, etc.). The force control effect is obvious, which greatly reduces the polishing defect rate of low-end cups and pots, and greatly improves the scope of the thermos cup polishing machine to adapt to polishing cups.

[0064] In summary, the present invention provides a force control device for a thermos cup polishing machine, which mainly includes an elastic mechanism, a guide mechanism, an adjustment mechanism, a sliding mechanism, and a main motion mechanism. The concept of bionic design is adopted to imitate the control method of polishing force in manual polishing. Accordingly, the machine is easy to operate. The force can be controlled by manually adjusting the adjustment mechanism. The structure is simple, and only a simple device needs to be added to the original CNC processing equipment. The adaptability is wide, and different forces can be adjusted according to different cups. The force control effect is good, and the same batch of workpieces with large tolerances can be polished, avoiding over-polishing and under-polishing, and increasing the yield of the polishing process.

[0065] The above specific embodiments and accompanying drawings are only used to illustrate the technical solutions and technical effects of the present invention, and are not used to limit the present invention. Any person skilled in the art who is familiar with the technology can modify or change the above embodiments within the scope of the claims without violating the technical principles and spirit of the present invention, and all of them belong to the scope of protection of the present invention.

Claims

1. A force control device for a thermos cup polishing machine, characterized in that: Include: One fuselage; An elastic mechanism for generating a force; the elastic mechanism comprises a spring, and deformation of the spring generates the force; A guide mechanism, the guide mechanism is connected to the elastic mechanism, and the elastic mechanism reciprocates; the guide mechanism comprises a guide rod and a limit block, one end of the guide rod is connected to the limit block, and the spring is sleeved outside the guide rod; an adjusting mechanism, the adjusting mechanism is used to adjust the magnitude of the force generated by the elastic mechanism; the adjusting mechanism comprises an adjusting screw and a connecting block, the adjusting screw is connected to the connecting block in a spiral motion, and one end of the adjusting screw contacts the spring; a sliding mechanism, the sliding mechanism is connected to the guide mechanism, the sliding mechanism is used to drive a workpiece or a tool to slide along an axial direction; the sliding mechanism comprises a guide rail and a slider, the slider is slidably connected to the guide rail, the slider is connected to a main seat plate, the main seat plate is connected to the workpiece or the tool, and the limit block is connected to the main seat plate; A main motion mechanism provides the main motion of the workpiece or the tool according to the position data of the numerical control machining; the main motion mechanism includes a circular plate, the circular plate rotates around the Z axis relative to the machine body, slides along the X axis, and moves along the Y axis, and the movement of the circular plate relative to the machine body is controlled by the position data of the numerical control machining; the connecting block is fixedly connected to the circular plate; the guide rail is connected to the circular plate; the central axis of the spring is perpendicular to the rotation axis of the circular plate relative to the machine body around the Z axis.

2. The force control device for a thermos cup polishing machine according to claim 1, characterized in that: The guide rail is a ball guide rail.

3. The force control device for a thermos cup polishing machine according to claim 1, characterized in that: The main motion mechanism is also provided with a second limiter, and the second limiter and the first limiter block are used to limit the sliding range of the slider, and the second limiter includes a protrusion or a groove.

4. The force control device for a thermos cup polishing machine according to claim 1, characterized in that: It also includes an indicating mechanism, which includes a pointer and a scale for indicating the magnitude of the force generated by the elastic mechanism. The pointer is connected to the adjusting screw, and the scale is connected to the main motion mechanism or the connecting block.

5. The force control device for a thermos cup polishing machine according to claim 1, characterized in that: The adjustment mechanism also includes a hand wheel, and the hand wheel is connected to the adjustment screw.

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