Sheet metal part polishing device and polishing process for preventing excessive polishing

Abstract

The present application relates to the technical field of polishing device, disclose a kind of sheet metal polishing device and polishing process to prevent excessive polishing, including polishing machine main body, the polishing platform is arranged on the polishing machine main body, the polishing machine is provided with polishing assembly, sliding table assembly, monitoring component and drive mechanism.The present application is by setting polishing assembly, sliding table assembly, monitoring component, drive component and control component, when the equipment continuously polishes certain position of workpiece, drive component controls polishing assembly to move when reaching workpiece polishing limit time, it is favorable to avoid workpiece to be excessively polished and cause surface damage or uneven, more safe, improve the polishing quality of workpiece, when the polishing pressure of polishing assembly is larger, drive component can be adjusted by control component, make the response time of drive component shorten, in turn make polishing assembly faster separate from workpiece surface, it is favorable to adapt to different polishing working condition, improve fault tolerance, more practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing devices, in particular to a sheet metal part polishing device capable of preventing excessive polishing and a polishing process. BACKGROUND

[0002] Polishing and polishing are a kind of processing technology frequently used in sheet metal processing, which mainly processes the surface of sheet metal products. The main function is to clean burrs on the surface of sheet metal parts, remove oxide skin and protrusions in the welding area, and perform wire drawing treatment on the surface of the product. The common sheet metal part polishing device includes manual polishing and mechanical polishing. The mechanical polishing is suitable for regular-shaped sheet metal parts and sheet metal products. For larger sheet metal products, the polishing roller on the mechanical polishing equipment moves along the surface of the sheet metal product to achieve uniform polishing.

[0003] However, the existing sheet metal part mechanical polishing device lacks polishing protection for the workpiece. When the mechanical parameters are set incorrectly or the driving structure of the polishing equipment is damaged, the polishing roller is likely to stay at a certain position of the workpiece for too long, which may cause excessive polishing at that position. Excessive polishing may result in uneven surface of the product or even irreparable damage, which seriously affects the processing quality of the workpiece and causes economic losses. Therefore, further improvement is needed.

[0004] However, there is no effective solution to the above problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a sheet metal part polishing device capable of preventing excessive polishing and a polishing process, which has the advantages of high safety and strong applicability, and solves the problem that the current sheet metal part polishing device causes excessive polishing of the workpiece by the polishing roller due to incorrect parameter setting or damage to the driving structure, thereby affecting the processing quality of the product.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a sheet metal part polishing device capable of preventing excessive polishing, comprising a polishing machine main body, wherein the polishing machine main body is provided with a polishing platform, and the polishing machine is provided with a polishing assembly, a sliding table assembly, a monitoring assembly and a driving mechanism.

[0007] The sliding table assembly is fixedly installed on the polishing machine main body, and the sliding table assembly is used to drive the polishing assembly to move along the surface of the workpiece.

[0008] The polishing assembly is in transmission connection with the sliding table assembly, and the polishing assembly is used to polish the surface of the sheet metal part.

[0009] The monitoring assembly is fixed on the polishing machine main body, and the monitoring assembly is used to monitor the stop moving state of the polishing assembly.

[0010] The driving mechanism comprises a driving assembly and a regulating assembly, both of which are in transmission connection with the polishing assembly, the driving assembly is used to drive the polishing assembly to move away from the workpiece, and the regulating assembly is used to adjust the response time of the driving assembly;

[0011] When the monitoring assembly monitors that the polishing assembly continuously polishes a certain position of the workpiece, the driving assembly operates to make the polishing assembly move away from the workpiece after a period of time, and when the polishing pressure of the polishing assembly on the workpiece changes, the regulating assembly operates to adjust the response time of the driving assembly, so as to force the driving assembly to change the operation process.

[0012] Preferably, the sliding table assembly comprises a first motor, two mounting bases, a lead screw, a light rod and a shell, the two mounting bases are fixed with the polishing machine body, the light rod is movably inserted into the shell, the two ends of the light rod are fixedly connected with the two mounting bases respectively, the two ends of the lead screw are movably connected with the two mounting bases respectively, the shell is connected with the lead screw through a nut pair, the first motor is fixedly connected with the mounting base, and the output shaft of the first motor is fixedly connected with the lead screw.

[0013] Preferably, the polishing assembly comprises a mounting angle steel, a second motor is fixed on the mounting angle steel, a polishing roller is fixed on the output shaft of the second motor, a connecting block is fixed on the top of the mounting angle steel, the connecting block penetrates into the shell and is slidably connected with the shell, a first rack is fixed on the side wall of the connecting block, and an elastic member is further arranged on the top of the mounting angle steel.

[0014] Preferably, the elastic member comprises a telescopic rod and a first spring, the two ends of the telescopic rod are fixedly connected with the mounting angle steel and the shell respectively, and the first spring is sleeved outside the telescopic rod, and the two ends of the first spring are fixedly connected with the mounting angle steel and the shell respectively.

[0015] Preferably, the monitoring assembly comprises a connecting plate, the connecting plate is fixedly connected with the polishing machine body, and a speed sensor is fixed on the connecting plate.

[0016] Preferably, the driving assembly comprises a third motor, a take-up reel and a first guide pulley, the first guide pulley is movably connected with the shell through a rotating shaft, the third motor is fixed with the shell, and the output shaft of the third motor is fixed with the take-up reel.

[0017] Preferably, the regulating assembly comprises a gear, the gear is movably connected with the shell through a rotating shaft, the gear is in meshing connection with the first rack, a connecting rod is fixed on the surface of the gear, the second guide pulley is movably connected with the end of the connecting rod, the rope is wound on the take-up reel, and the end of the rope is wound around the first guide pulley and the second guide pulley and is fixedly connected with the connecting block.

[0018] Preferably, a second rack is fixed to the inner wall of the shell, a manually operated assembly is arranged on the connecting block, the manually operated assembly comprises a base rod, a base shaft is fixed to the end of the base rod, an operating handle is movably mounted on the base shaft, a tooth block matched with the second rack is fixed to the end of the operating handle, a guide hole is arranged on the shell, and the end of the operating handle away from the tooth block extends to the outside of the shell through the guide hole.

[0019] Preferably, a strip-shaped hole is formed in the operating handle, a swivel ring and a second spring are arranged in the strip-shaped hole, one end of the second spring is fixed to the swivel ring, the other end of the second spring is fixed to the inner wall of the strip-shaped hole, the swivel ring is rotatably connected with the base shaft, and a limiting rod is fixed to the operating handle.

[0020] The application also discloses a metal plate polishing process for preventing excessive polishing.

[0021] Compared with the prior art, the application provides a metal plate polishing device and process for preventing excessive polishing, and has the following beneficial effects:

[0022] 1. The metal plate polishing device and process for preventing excessive polishing have the following beneficial effects: the polishing assembly, the sliding table assembly, the monitoring assembly and the driving assembly are arranged, when the polishing assembly continuously polishes a certain position of the workpiece, the driving assembly is operated and controls the polishing assembly to move when the polishing assembly reaches the polishing limit time of the workpiece, and then the polishing assembly is separated from the surface of the workpiece, so that the polishing assembly can be prevented from excessively polishing the workpiece, the surface of the workpiece can be prevented from being damaged or uneven due to excessive polishing, the safety is improved, and the polishing quality of the workpiece is improved.

[0023] 2. The metal plate polishing device and process for preventing excessive polishing have the following beneficial effects: the regulating and controlling assembly is arranged, when the polishing pressure of the polishing assembly is large, the regulating and controlling assembly can regulate the driving assembly, the response time of the driving assembly is shortened, the polishing assembly is separated from the surface of the workpiece more quickly, different polishing conditions can be adapted, the fault tolerance is improved, and the device is more practical.

[0024] 3. The metal plate polishing device and process for preventing excessive polishing have the following beneficial effects: the manually operated assembly is arranged, the polishing roller can be driven to move and separate from the surface of the workpiece in a manual operation mode, the workpiece can be manually controlled in an emergency state, the workpiece is quickly protected, and the safety is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic view of the three-dimensional structure of the polishing machine body of the application;

[0026] Figure 2 FIG. 4 is a schematic view of the internal structure of the shell of the application;

[0027] Figure 3 Structure diagram of the sliding table assembly of the present application;

[0028] Figure 4 Structure diagram of the sliding table assembly of the present application; Figure 3 Enlarged view of A of the sliding table assembly of the present application;

[0029] Figure 5 Structure diagram of the driving mechanism of the present application;

[0030] Figure 6 Working diagram of the regulating assembly of the present application;

[0031] Figure 7 Structure diagram of the manual operation assembly of the present application;

[0032] Figure 8 Working diagram of the manual operation assembly of the present application.

[0033] In the figure: 1, polishing machine main body; 2, polishing platform; 3, polishing assembly; 31, mounting angle steel; 32, second motor; 33, polishing roller; 34, connecting block; 35, first rack; 36, elastic member; 361, telescopic rod; 362, first spring; 4, sliding table assembly; 41, first motor; 42, mounting base; 43, screw rod; 44, light pole; 45, shell; 451, second rack; 452, guide hole; 5, monitoring assembly; 51, connecting plate; 52, speed sensor; 6, driving mechanism; 61, driving assembly; 611, third motor; 612, take-up reel; 613, first guide pulley; 62, regulating assembly; 621, gear; 622, connecting rod; 623, second guide pulley; 624, rope; 7, manual operation assembly; 71, base rod; 72, base shaft; 73, operation handle; 74, tooth block; 75, strip-shaped hole; 76, swivel ring; 77, second spring; 78, limiting rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] As introduced in the background, the deficiencies in the prior art exist. In order to solve the above technical problems, the present application proposes a sheet metal part polishing device and polishing process for preventing excessive polishing.

[0036] Please refer to Figures 1-4The utility model provides a prevent overpolish sheet metal workpiece polishing device, including polishing machine body 1, be provided with polishing platform 2 on polishing machine body 1, be provided with polishing assembly 3, sliding table assembly 4, monitoring component 5 and drive mechanism 6 on polishing machine,

[0037] Sliding table assembly 4 is fixedly installed on polishing machine body 1, and sliding table assembly 4 is used to drive polishing assembly 3 to move along the workpiece surface,

[0038] Polishing assembly 3 is transmission connection with sliding table assembly 4, and polishing assembly 3 is used to polish sheet metal workpiece surface,

[0039] Monitoring component 5 is fixed on polishing machine body 1, and monitoring component 5 is used to monitor polishing assembly 3 stop moving state,

[0040] Drive mechanism 6 includes drive assembly 61 and control assembly 62, and drive assembly 61 and control assembly 62 are all transmission connection with polishing assembly 3, drive assembly 61 is used to drive polishing assembly 3 to move to separate from workpiece, and control assembly 62 is used to adjust the response time of drive assembly 61,

[0041] When monitoring component 5 monitors that polishing assembly 3 continuously polishes certain position of workpiece, drive assembly 61 operates and makes polishing assembly 3 move to separate from workpiece after a period of time, when the polishing pressure of polishing assembly 3 to workpiece changes, control assembly 62 operates and adjusts the response time of drive assembly 61, forces drive assembly 61 operating process to change.

[0042] Wherein, polishing platform 2 is same with prior art, is used to carry workpiece and adjust workpiece position, can control the contact intensity of workpiece and polishing assembly 3 by controlling the movement of polishing platform 2, and then control polishing pressure, when polishing pressure increases, control assembly 62 operates and makes the response time of drive assembly 61 shorten, when polishing pressure reduces, control assembly 62 operates and makes the response time of drive assembly 61 extend,

[0043] When using, places sheet metal workpiece on polishing platform 2, operates sliding table assembly 4 and polishing assembly 3, and sliding table assembly 4 drives polishing assembly 3 to move along sheet metal workpiece surface, realizes the polishing of sheet metal workpiece surface, when monitoring component 5 monitors that polishing assembly 3 continuously polishes certain position on sheet metal, drive assembly 61 operates, makes polishing assembly 3 move and separate from the polishing surface on workpiece after a period of time, prevents overpolish and causes workpiece surface damage, when the polishing pressure of polishing assembly 3 changes, polishing assembly 3 drives control assembly 62, control assembly 62 operates and adjusts the response time of drive assembly 61, forces drive assembly 61 operating process to change, makes polishing assembly 3 separate from workpiece after different time,

[0044] By setting the polishing assembly 3, the sliding table assembly 4, the monitoring assembly 5, the driving assembly 61 and the regulating assembly 62, when the polishing assembly 3 continuously polishes a certain position of the workpiece, the driving assembly 61 operates and controls the polishing assembly 3 to move after a period of time, thereby separating from the surface of the workpiece, which is beneficial to avoid excessive polishing of the workpiece by the polishing assembly 3 and avoid damage or unevenness of the workpiece surface caused by excessive polishing, is more secure, improves the polishing quality of the workpiece, and when the polishing pressure of the polishing assembly 3 is larger, the driving assembly 61 can be adjusted through the regulating assembly 62, so that the response time of the driving assembly 61 is shortened, and then the polishing assembly 3 separates from the surface of the workpiece faster, which is beneficial to adapt to different polishing conditions and improve the fault tolerance, and is more practical.

[0045] Further, referring to Figures 4-5 , the sliding table assembly 4 comprises a first motor 41, a mounting base 42, a lead screw 43, a light pole 44 and a housing 45, the mounting base 42 is provided as two, both of the mounting base 42 are fixed with the polishing machine body 1, the light pole 44 is movably inserted with the housing 45, both ends of the light pole 44 are fixedly connected with the two mounting bases 42 respectively, both ends of the lead screw 43 are movably connected with the two mounting bases 42 respectively, the housing 45 is connected with the lead screw 43 through a nut pair, the first motor 41 is fixedly connected with the mounting base 42, the output shaft of the first motor 41 is fixedly connected with the lead screw 43, the polishing assembly 3 comprises a mounting angle steel 31, the mounting angle steel 31 is fixedly connected with a second motor 32, the output shaft of the second motor 32 is fixedly connected with a polishing roller 33, the top of the mounting angle steel 31 is fixedly connected with a connecting block 34, the connecting block 34 penetrates into the housing 45 and is slidably connected with the housing 45, a first rack 35 is fixedly connected with the side wall of the connecting block 34, an elastic element 36 is further arranged on the top of the mounting angle steel 31, and the mounting angle steel 31 is connected with the housing 45 through the elastic element 36;

[0046] Wherein, the lead screw 43 is movably connected with the mounting base 42 through a bearing, a strip-shaped sliding block is fixedly arranged on the inner wall of the housing 45, the strip-shaped sliding block is preferably arranged in a vertical state, a sliding groove matched with the strip-shaped sliding block is arranged on the connecting block 34, so as to realize the sliding connection, the number of the elastic elements 36 is preferably two, and the two elastic elements 36 are symmetrically distributed on both sides of the connecting block 34;

[0047] In use, when the second motor 32 is started, the second motor 32 output shaft drives the polishing roller 33 to rotate, and when the rotating polishing roller 33 contacts the surface of the workpiece, the polishing and polishing effects are realized; when the first motor 41 is started, the first motor 41 drives the screw rod 43 to rotate, and since the shell 45 is connected with the screw rod 43 through a nut pair, and the light rod 44 is movably inserted with the shell 45, when the screw rod 43 rotates, it drives the shell 45 to move along the light rod 44, and when the shell 45 moves, it drives the connecting block 34 to move, and when the connecting block 34 moves, it drives the elastic member 36 and the mounting angle steel 31 to move, and further drives the second motor 32 and the polishing roller 33 on the mounting angle steel 31 to move, at this time the polishing roller 33 rotates while moving along the surface of the workpiece, and further polishing each position of the workpiece;

[0048] By setting the sliding table assembly 4 and the polishing assembly 3, starting the first motor 41 and the second motor 32 can control the polishing roller 33 to rotate and move along the surface of the workpiece, which is beneficial to polish and polish the surface of the workpiece, has high automation degree, is more labor-saving and efficient than manual polishing, and facilitates the polishing of medium and large metal sheet workpieces.

[0049] Further, referring to Figure 5 , the elastic member 36 includes a telescopic rod 361 and a first spring 362, the telescopic rod 361 is fixedly connected with the mounting angle steel 31 and the shell 45 at both ends respectively, and the first spring 362 is sleeved outside the telescopic rod 361, and the first spring 362 is fixedly connected with the mounting angle steel 31 and the shell 45 at both ends respectively;

[0050] When the polishing pressure needs to be adjusted, the polishing machine main body 1 controls the polishing platform 2 to move up, and further drives the metal sheet workpiece to move up, the contact surface of the metal sheet workpiece pushes the polishing roller 33, the polishing roller 33 moves up and drives the mounting angle steel 31 to move up, the mounting angle steel 31 moves up and compresses the first spring 362 and the telescopic rod 361, at this time the elastic force of the compressed spring acts on the mounting angle steel 31, and further makes the polishing roller 33 on the mounting angle steel 31 closely fit with the metal sheet workpiece, so as to adjust the polishing pressure;

[0051] By setting the elastic member 36 as the telescopic rod 361 and the first spring 362, the polishing pressure of the polishing roller 33 on the metal sheet workpiece can be adjusted by compressing the first spring 362, which is beneficial to adapt to different polishing requirements, and the telescopic rod 361 can be used to guide the spring to avoid spring distortion.

[0052] Further, referring to Figures 4-6The monitoring assembly 5 comprises a connecting plate 51 fixedly connected with the polishing machine body 1, and a speed measuring sensor 52 fixed on the connecting plate 51; the driving assembly 61 comprises a third motor 611, a take-up wheel 612 and a first guide pulley 613, the first guide pulley 613 is movably connected with the shell 45 through a rotating shaft, the third motor 611 is fixed with the shell 45, the output shaft of the third motor 611 is fixed with the take-up wheel 612; the regulating assembly 62 comprises a gear 621 movably connected with the shell 45 through a rotating shaft, the gear 621 is engaged with the first rack 35, and the surface of the gear 621 is fixed with a connecting rod 622, the end of the connecting rod 622 is movably connected with a second guide pulley 623, and the take-up wheel 612 is wound with a rope 624, the end of the rope 624 is wound around the first guide pulley 613 and the second guide pulley 623 and is fixedly connected with the connecting block 34.

[0053] The speed measuring sensor 52 is an optical sensor, and the speed measuring sensor 52 is electrically connected with the third motor 611, the speed measuring sensor 52 is opposite to the lead screw 43, when the lead screw 43 stops rotating, the shell 45 is in a static state, and then it is indicated that the polishing roller 33 continuously polishes a position, the number of the first guide pulley 613 is set according to actual needs, when the polishing pressure is at the minimum, the second guide pulley 623 is located on the straight line between the first guide pulley and the take-up wheel 612, in the initial state, the length of the unwound rope 624 is greater than the length of the winding path, wherein the winding path means the sum of the straight line length from the take-up wheel 612 to the second guide pulley, the straight line length from the second guide pulley to the first guide pulley, the straight line length between each first guide pulley and the straight line length from the first guide pulley to the connecting point on the connecting block 34, so that the rope 624 needs to be wound for a period of time before the connecting block 34 can be moved;

[0054] In use, when the speed sensor 52 detects that the lead screw 43 stops rotating, the third motor 611 starts, and when the third motor 611 operates, the output shaft drives the take-up reel 612 to rotate, and when the take-up reel 612 rotates, the rope 624 is wound up. Since the length of the wound rope 624 is greater than the length of the winding path, the part of the rope 624 that is greater than the winding path is first wound up by the take-up reel 612, and the winding time of this part is just the same as the polishing limit time of the workpiece surface. After that, when the take-up reel 612 continues to wind, it will pull the connecting block 34 through the rope 624, causing the connecting block 34 to slide. When the connecting block 34 slides, it drives the mounting angle steel 31 to move, and in turn drives the polishing roller 33 and the second motor 32 on the mounting angle steel 31 to move, so that the polishing roller 33 is separated from the workpiece polishing surface, thereby avoiding continuous polishing when the polishing limit time of the workpiece surface is reached. When the polishing pressure increases, the length of the elastic member 36 shortens, and at the same time, the relative position of the connecting block 34 moves upward. When the connecting block 34 moves upward, it drives the first rack 35 on the side to move upward, and the upward movement of the first rack 35 drives the gear 621 to rotate. When the gear 621 rotates, it drives the connecting rod 622 to rotate, and in turn drives the second guide pulley 623 at the end of the connecting rod 622 to rotate. After the connecting block 34 moves upward and the second guide pulley 623 rotates, the winding path increases, and in turn the difference between the length of the unwound rope 624 and the winding path decreases, and the rope 624 is faster when winding the connecting block 34;

[0055] By setting the monitoring assembly 5, the driving assembly 61 and the control assembly 62, when the polishing roller 33 continuously polishes a certain place of the workpiece is monitored by the monitoring assembly 5, the driving assembly 61 drives the polishing roller 33 to separate from the workpiece when the workpiece reaches the polishing limit time after operating, thereby improving the safety, avoiding the workpiece surface from being damaged due to excessive polishing, and the driving assembly 61 operating time can be adjusted according to the polishing pressure through the control assembly 62. When the polishing pressure is larger, the polishing roller 33 is driven to separate from the workpiece faster, which is conducive to adapting to different polishing conditions and has stronger practicality.

[0056] Further, referring to Figures 7-8 , a second rack 451 is fixed on the inner wall of the shell 45, a manual operation assembly 7 is arranged on the connecting block 34, the manual operation assembly 7 comprises a base rod 71, a base shaft 72 is fixed at the end of the base rod 71, an operation handle 73 is movably installed on the base shaft 72, a tooth block 74 matched with the second rack 451 is fixed at the end of the operation handle 73, a guide hole 452 is arranged on the shell 45, the end of the operation handle 73 away from the tooth block 74 extends to the outside of the shell 45 through the guide hole 452, a strip-shaped hole 75 is formed in the operation handle 73, a rotating ring 76 and a second spring 77 are arranged in the strip-shaped hole 75, one end of the second spring 77 is fixed with the rotating ring 76, the other end of the second spring 77 is fixed with the inner wall of the strip-shaped hole 75, the rotating ring 76 is rotatably connected with the base shaft 72, and a limiting rod 78 is fixed on the operation handle 73;

[0057] In the initial state, the tooth block 74 at one end of the operating handle 73 is inclined upward, the tooth block 74 corresponds to the position of the second rack 451 but does not contact, the limiting rod 78 is L-shaped, and in the initial state, the bottom end of the limiting rod 78 extends to the bottom of the base rod 71, so that the limiting rod 78 maintains the current angle. In use, the upward movement of the connecting block 34 drives the entire manual operation assembly 7 to move vertically, and the rotation of the operating handle 73 away from the end of the tooth block 74 can drive the operating handle 73 to rotate. After the operating handle 73 rotates, the tooth block 74 at the rear end of the operating handle 73 contacts the second rack 451, and continues to rotate to make the operating handle 73 rotate around the second rack 451 as the pivot. During the rotation, the base shaft 72 is pushed through the guide hole 452, and after the base shaft 72 is stressed, the connecting block 34 slides, and the polishing roller 33 at the bottom of the connecting block 34 is separated from the surface of the workpiece. At the same time, the relative position of the base shaft 72 in the guide hole 452 and the angle of the relative rotating ring 76 change, so that the rotating ring 76 moves in the guide hole 452 and compresses the second spring 77. When the tooth block 74 is separated from the second rack 451 by reversing the operating handle 73, the elastic force of the second spring 77 resets the operating handle 73. After the operating handle 73 is released, the operating handle 73 returns to the initial angle under the action of gravity.

[0058] By setting the manual operation assembly 7, it is beneficial to drive the polishing roller 33 to move away from the surface of the workpiece by manual operation, and it is beneficial to manually control in an emergency state to quickly protect the workpiece and further improve the safety.

[0059] Working principle: in use, the sheet metal workpiece is placed on the polishing platform 2, the first motor 41 and the second motor 32 are started, when the second motor 32 is started, the output shaft of the second motor 32 drives the polishing roller 33 to rotate, and when the polishing roller 33 rotates and contacts the surface of the workpiece, the polishing and polishing effect is realized, when the first motor 41 is started, the first motor 41 rotates to drive the screw rod 43 to rotate, because the shell 45 is connected with the screw rod 43 through the nut pair, and the light rod 44 is movably inserted with the shell 45, when the screw rod 43 rotates, it drives the shell 45 to move along the light rod 44, when the shell 45 moves, it drives the connecting block 34 to move, when the connecting block 34 moves, it drives the elastic element 36 and the mounting angle steel 31 to move, and then drives the second motor 32 and the polishing roller 33 on the mounting angle steel 31 to move, at this time, the polishing roller 33 rotates while moving along the surface of the workpiece, and then the workpiece is polished at each position; when the speed sensor 52 detects that the screw rod 43 stops rotating, the third motor 611 starts, and when the third motor 611 operates, the output shaft drives the take-up reel 612 to rotate, and when the take-up reel 612 rotates, it winds the rope 624, because the length of the wound rope 624 is greater than the length of the winding path, the part of the rope 624 greater than the winding path is first wound by the take-up reel 612, and the winding time of this part is just the same as the polishing limit time of the surface of the workpiece, and then when the take-up reel 612 continues to wind, it will pull the connecting block 34 through the rope 624, so that the connecting block 34 slides, and when the connecting block 34 slides, it drives the mounting angle steel 31 to move, and then drives the polishing roller 33 and the second motor 32 on the mounting angle steel 31 to move, so that the polishing roller 33 is separated from the polishing surface of the workpiece, and then the continuous polishing is avoided when the polishing limit time of the surface of the workpiece arrives, to prevent excessive polishing from damaging the surface of the workpiece; when the polishing pressure needs to be increased, the polishing machine main body 1 controls the polishing platform 2 to move up, and then drives the sheet metal workpiece to move up, the contact surface of the sheet metal workpiece pushes the polishing roller 33, and the polishing roller 33 moves up to drive the mounting angle steel 31 to move up, and the mounting angle steel 31 moves up to compress the first spring 362 and the telescopic rod 361, at this time, the elastic force of the compressed spring acts on the mounting angle steel 31, and then the polishing roller 33 on the mounting angle steel 31 is closely attached to the sheet metal workpiece, so as to increase the polishing pressure; when the polishing pressure of the polishing assembly 3 increases, the relative position of the connecting block 34 moves up, the first rack 35 on the side of the connecting block 34 moves up, the first rack 35 moves up to drive the gear 621 to rotate, the gear 621 rotates to drive the connecting rod 622 to rotate, and then the second guide pulley 623 at the end of the connecting rod 622 rotates, the connecting block 34 moves up and the second guide pulley 623 rotates to increase the winding path, and then the difference between the length of the unwound rope 624 and the winding path is reduced, and the rope 624 is pulled faster when winding, so as to adapt to different polishing conditions;

[0060] Through setting the polishing assembly 3, the sliding table assembly 4, the monitoring assembly 5, the driving assembly 61 and the regulating assembly 62, when the polishing assembly 3 continuously polishes a position of the workpiece, the driving assembly 61 operates and controls the polishing assembly 3 to move after a period of time, thereby separating from the surface of the workpiece, which is beneficial to avoid that the polishing assembly 3 excessively polishes the workpiece, avoids that the surface of the workpiece is damaged or uneven due to excessive polishing, is safer, improves the polishing quality of the workpiece, when the polishing pressure of the polishing assembly 3 is larger, the driving assembly 61 can be adjusted through the regulating assembly 62, the response time of the driving assembly 61 is shortened, thereby the polishing assembly 3 separates from the surface of the workpiece faster, which is beneficial to adapt to different polishing conditions, improves the fault tolerance rate and is more practical.

[0061] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sheet metal grinding device for preventing over-grinding, comprising a grinding machine body (1), wherein a grinding platform (2) is provided on the grinding machine body (1), characterized in that: The main body (1) of the grinder is provided with a grinding component (3), a slide assembly (4), a monitoring component (5) and a drive mechanism (6). The slide assembly (4) is fixedly installed on the main body (1) of the grinding machine, and the slide assembly (4) is used to drive the grinding assembly (3) to move along the surface of the workpiece; The grinding assembly (3) is connected to the slide assembly (4) for grinding the surface of sheet metal parts; The monitoring component (5) is fixed on the main body (1) of the grinding machine, and the monitoring component (5) is used to monitor the stop and move status of the grinding component (3); The drive mechanism (6) includes a drive component (61) and a control component (62). Both the drive component (61) and the control component (62) are connected to the grinding component (3) in a transmission manner. The drive component (61) is used to drive the grinding component (3) to move away from the workpiece. The control component (62) is used to adjust the response time of the drive component (61). The slide assembly (4) includes a first motor (41), a mounting base (42), a lead screw (43), a guide rod (44), and a housing (45). There are two mounting bases (42), both of which are fixed to the main body (1) of the grinder. The guide rod (44) is movably connected to the housing (45). Both ends of the guide rod (44) are fixedly connected to the two mounting bases (42), and both ends of the lead screw (43) are movably connected to the two mounting bases (42). The housing (45) is connected to the lead screw (43) through a nut pair. The first motor (41) is fixedly connected to the mounting base (42), and the output shaft of the first motor (41) is fixedly connected to the lead screw (43). The grinding assembly (3) includes a mounting angle steel (31), on which a second motor (32) is fixed. A grinding roller (33) is fixed on the output shaft of the second motor (32). A connecting block (34) is fixed on the top of the mounting angle steel (31). The connecting block (34) extends through the housing (45) and is slidably connected to the housing (45). A first rack (35) is fixed on the side wall of the connecting block (34). An elastic element (36) is also provided on the top of the mounting angle steel (31). The mounting angle steel (31) is connected to the housing (45) through the elastic element (36). The drive assembly (61) includes a third motor (611), a take-up reel (612) and a first guide pulley (613). The first guide pulley (613) is movably connected to the housing (45) via a rotating shaft. The third motor (611) is fixed to the housing (45), and the output shaft of the third motor (611) is fixed to the take-up reel (612). The control component (62) includes a gear (621), which is movably connected to the housing (45) via a rotating shaft. The gear (621) meshes with a first rack (35). A connecting rod (622) is fixed on the surface of the gear (621). A second guide pulley (623) is movably connected to the end of the connecting rod (622). A rope (624) is wound on the take-up reel (612). The end of the rope (624) passes around the first guide pulley (613) and the second guide pulley (623) and is fixedly connected to the connecting block (34). The inner wall of the housing (45) is fixed with a second rack (451), and a manual operation component (7) is provided on the connecting block (34). The manual operation component (7) includes a base rod (71), a base shaft (72) is fixed at the end of the base rod (71), an operation handle (73) is movably mounted on the base shaft (72), a toothed block (74) matching the second rack (451) is fixed at the end of the operation handle (73), a guide hole (452) is provided on the housing (45), and the end of the operation handle (73) away from the toothed block (74) extends to the outside of the housing (45) through the guide hole (452). The operating handle (73) has a strip hole (75), and a rotating ring (76) and a second spring (77) are provided in the strip hole (75). One end of the second spring (77) is fixed to the rotating ring (76), and the other end of the second spring (77) is fixed to the inner wall of the strip hole (75). The rotating ring (76) is rotatably connected to the base shaft (72), and a limit rod (78) is fixed on the operating handle (73). When the monitoring component (5) detects that the grinding component (3) is continuously grinding a certain position of the workpiece, the drive component (61) operates to make the grinding component (3) move away from the workpiece after a period of time. When the grinding pressure of the grinding component (3) on the workpiece changes, the control component (62) operates and adjusts the response time of the drive component (61), forcing the operation process of the drive component (61) to change.

2. The sheet metal grinding device for preventing over-grinding according to claim 1, characterized in that: The elastic element (36) includes a telescopic rod (361) and a first spring (362). The two ends of the telescopic rod (361) are fixedly connected to the mounting angle steel (31) and the housing (45) respectively. The first spring (362) is sleeved on the telescopic rod (361). The two ends of the first spring (362) are fixedly connected to the mounting angle steel (31) and the housing (45) respectively.

3. The sheet metal grinding device for preventing over-grinding according to claim 2, characterized in that: The monitoring component (5) includes a connecting plate (51), which is fixedly connected to the main body (1) of the grinding machine, and a speed sensor (52) is fixed on the connecting plate (51).

4. A sheet metal grinding process to prevent over-grinding, characterized in that: The sheet metal grinding device for preventing over-grinding as described in any one of claims 1-3 is applied.

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