Grinding device for workbench of punching machine

Abstract

The invention relates to the technical field of grinding, and discloses a punching machine workbench grinding device which comprises a machine body, a lower working face and an upper working face are arranged on the machine body, a bottom supporting plate is placed on the lower working face, a middle supporting plate is slidably connected to the top of the bottom supporting plate, a small supporting plate is slidably connected to the middle supporting plate, and a fixing base is fixedly connected to the top of the small supporting plate. The top of the fixing base is rotationally connected with a rotating base, the inner top wall of the fixing base is rotationally connected with a sleeve, the bottom end of the sleeve is fixedly connected with a bevel gear A, and the inner wall of one side of the fixing base is rotationally connected with a bevel gear B meshed with the bevel gear A. According to the grinding device for the punch press workbench, the bevel gear B is driven by a shaft rod to rotate; and at the moment, the sleeve can drive the rotating seat to rotate, so that the orientation of the grinding wheel is changed, the grinding direction of the grinding wheel to a workpiece is changed by changing the orientation of the grinding wheel, and the grinding uniformity of the grinding wheel to the workpiece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a grinding device for a punching machine workbench. Background Art

[0002] A punch press, also known as a stamping machine, is a metal stamping machine tool that is mainly used to form metal plates or punch holes in metal plates. The punch press mainly cooperates with the mold to exert pressure on the material to make it plastically deformed and obtain the required shape and precision. The punch press is widely used in many fields such as metal processing, automobile manufacturing, aerospace, and electronic appliances. Punching machines are generally divided into a lower working surface and an upper working surface. By installing a bottom die on the lower working surface and a top die on the upper working surface, after the workpiece is punched, the top of the workpiece in the bottom die and the bottom of the workpiece in the top die need to be polished. The grinding of punching machine workpieces is an important process link. It has a significant impact on improving the quality of the workpiece, extending the service life of the mold and optimizing production efficiency. The purpose of grinding is mainly to improve the surface finish and precision of the workpiece, remove defects on the workpiece surface and extend the service life of the mold; When grinding the punch press, the workpiece in the bottom mold is generally ground in advance. When grinding the top mold, since the workpiece in the top mold is still on the upper working surface of the punch press, the staff cannot directly see the bottom of the workpiece. In addition, due to the limited working space of the punch press, manual grinding is dangerous and inconvenient to operate, which makes it difficult to grind the bottom of the workpiece. For this reason, we propose a punch press workbench grinding device. Summary of the invention

[0003] The object of the present invention is to provide a punch press worktable grinding device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching machine worktable grinding device, comprising a bed body, a lower working surface and an upper working surface are respectively arranged on the bed body, a bottom support plate is placed on the lower working surface, a middle support plate is slidably connected to the top of the bottom support plate, a small support plate is slidably connected to the middle support plate, a fixed seat is fixedly connected to the top of the small support plate, a rotating seat is rotatably connected to the top of the fixed seat, a sleeve is rotatably connected to the inner top wall of the fixed seat, the top of the sleeve is fixedly docked with the bottom of the rotating seat, a bevel gear A is fixedly connected to the bottom end of the sleeve, a bevel gear B meshing with the bevel gear A is rotatably connected to the inner wall of one side of the fixed seat, a shaft rod is rotatably connected to the side of the fixed seat close to the bevel gear B, and a knob is fixedly connected to the end of the shaft rod away from the fixed seat, the shaft rod is fixedly docked with the bevel gear B, and a top plate is fixedly connected to the top of the rotating seat; The top of the top plate is fixedly connected with a fixing frame, one side of the top of the fixing frame is fixedly connected with a driver, and the output end of the driver is fixedly connected with a grinding wheel.

[0005] Preferably, a guide opening with a 90° arc structure is provided on one side of the top of the fixing seat, and magnet sheets are embedded in the inner walls at both ends of the guide opening.

[0006] Preferably, a connecting hole connected to each other is provided between the rotating seat, the top plate and the sleeve, a mounting cavity connected to the connecting hole is provided on one side of the top plate, a support frame is fixedly connected to one side of the top of the small support plate close to the shaft rod, and the shaft rod is located in the support frame and is rotatably connected thereto.

[0007] Preferably, a guide frame is fixedly connected to one side of the sleeve near the guide opening, a movable cavity is opened in the guide frame, a connecting rod A is vertically slidably connected in the movable cavity, a guide rod is fixedly connected to one end of the top of the connecting rod A near the guide opening, the top of the guide rod passes through the guide frame and is slidably connected to the inner wall of the guide opening, a transmission rod is slidably connected in the connecting hole, a limiting spring A is fixedly connected between the bottom end of the transmission rod and the inner bottom wall of the sleeve, a connecting rod B is fixedly connected to the side of the top of the transmission rod near the installation cavity, the connecting rod B is located in the installation cavity, and the connecting rod B is slidably connected to the inner wall of the installation cavity.

[0008] Preferably, a plurality of evenly distributed limiting grooves are provided on a side of the bottom supporting plate away from the bed body, and both ends of the bottom supporting plate are threadedly connected with limiting bolts.

[0009] Preferably, a mounting plate is fixedly connected to the side of the middle support plate away from the bed body, a turntable is rotatably connected to the bottom of the mounting plate, and the height of the turntable is flush with the height of the limit slot, a plurality of limit plates evenly distributed in a ring shape are fixedly connected to the turntable, a transmission plate is fixedly connected to the top of the mounting plate, a plurality of limit holes evenly distributed in a ring shape are arranged on the top of the transmission plate, and the interval angle between the limit plates is the same as the interval angle between the limit holes.

[0010] Preferably, a mounting seat is fixedly connected to the top of the mounting plate, a receiving groove is opened on the top of the mounting seat, a U-shaped rod is slidably connected in the receiving groove, an end of the U-shaped rod away from the mounting seat is located above the limiting hole on the transmission disk closest to the mounting seat, and a fixing spring is fixedly connected between the end of the U-shaped rod close to the mounting seat and the bottom wall of the receiving groove.

[0011] Preferably, one side of the middle support plate is rotatably connected to a screw rod through a frame, and one end of the screw rod away from the bed body is fixedly connected to a handle.

[0012] Preferably, a transmission frame is fixedly connected to one side of the small support plate close to the screw rod, and the transmission frame is sleeved on the screw rod and threadedly connected thereto.

[0013] Preferably, a limit spring B is fixedly connected between the top end of the transmission rod and the top wall of the installation cavity, and a pressure plate is fixedly connected to one end of the connecting rod B away from the transmission rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the bevel gear B to rotate through the shaft rod, thereby driving the bevel gear A and the sleeve to rotate. At this time, the sleeve can drive the rotating seat to rotate, thereby changing the direction of the grinding wheel. By changing the direction of the grinding wheel, the grinding direction of the workpiece by the grinding wheel is changed, and the uniformity of the grinding of the workpiece by the grinding wheel is improved. At the same time, the sleeve will drive the guide rod to slide along the guide port, and the maximum rotation angle of the rotating seat is limited through the cooperation of the guide port and the guide rod. When the guide rod moves to the end of the guide port, it can fit with the magnet sheet embedded in the end of the guide port. At this time, the guide rod can be magnetically attracted by the magnet sheet, so as to limit the rotating seat, which effectively improves the stability of the device after the grinding wheel is turned, and maintains the stability of the grinding wheel during the grinding process; 2. When the grinding wheel needs to be re-steering, the present invention presses the pressing plate, and the pressing plate is used to drive the connecting rod B to descend. At this time, the connecting rod B drives the transmission rod to descend synchronously. At the same time, the transmission rod drives the connecting rod A to descend along the movable cavity. At this time, the connecting rod A drives the guide rod to descend together, so that the guide rod is moved out of the guide port. At this time, the magnetic attraction effect of the magnet sheet on the guide rod disappears, and the rotating seat can continue to be controlled to rotate. During the rotation of the rotating seat, the pressing plate is released, and the limit spring A and the limit spring B are used to drive the transmission rod, the connecting rod A, the guide rod, the connecting rod B and the pressing plate to be lifted to their initial positions. At this time, the guide rod will be reinserted into the guide port and cooperate with the guide port to re-limit the rotation angle of the rotating seat, which effectively improves the auxiliary function of the device in releasing the limit of the rotating seat. 3. According to the present invention, when the middle support plate is moved along the bottom support plate, the limit plates cooperate with the limit grooves to enable the turntable to rotate. At this time, whenever one of the limit plates is inserted into the corresponding limit groove, the middle support plate may be paused. By setting the interval between the limit plates to be the same distance as the width of the grinding wheel, it can be ensured that each pause of the middle support plate represents that the grinding wheel has moved a distance the same as its width. At this time, when the workpiece is ground by the grinding wheel, the problem of missing grinding of the workpiece due to excessive movement of the grinding wheel can be avoided, thereby further improving the auxiliary function of the grinding wheel in grinding the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the bottom support plate structure of the present invention; Figure 3 It is a schematic diagram of the support plate structure in the present invention; Figure 4 This is a schematic diagram of the structure of the fixing seat of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the fixing seat of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the guide frame of the present invention; Figure 7 This is a schematic diagram of the structure of the mounting plate and its connecting components of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the mounting seat of the present invention; Fig. 9 For the present invention Figure 5 A schematic diagram of the enlarged structure of area A is shown.

[0016] In the figure: 1, bed; 11, lower working surface; 12, upper working surface; 2, bottom support plate; 21, limit groove; 22, limit bolt; 3, middle support plate; 31, mounting plate; 32, turntable; 33, limit plate; 35, transmission plate; 36, limit hole; 4, mounting seat; 41, storage slot; 42, U-shaped rod; 43, fixing spring; 5, small support plate; 51, transmission frame; 6, screw rod; 61, handle; 7, fixing seat; 71, guide port; 72 , magnet sheet; 73, rotating seat; 74, top plate; 741, mounting cavity; 75, sleeve; 76, bevel gear A; 77, bevel gear B; 78, support frame; 79, shaft; 710, connecting hole; 8, guide frame; 81, movable cavity; 82, connecting rod A; 83, guide rod; 84, transmission rod; 85, limit spring A; 86, limit spring B; 87, connecting rod B; 88, pressure plate; 9, fixed frame; 91, driver; 92, grinding wheel. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-9The present invention provides a technical solution: a punch press worktable grinding device, comprising a bed body 1, on which a lower working surface 11 and an upper working surface 12 are respectively arranged, a bottom support plate 2 is placed on the lower working surface 11, both ends of the bottom support plate 2 are threadedly connected with limiting bolts 22, a middle support plate 3 is slidably connected to the top of the bottom support plate 2, a small support plate 5 is slidably connected to the middle support plate 3, a fixed seat 7 is fixedly connected to the top of the small support plate 5, a rotating seat 73 is rotatably connected to the top of the fixed seat 7, a top plate 74 is fixedly connected to the top of the rotating seat 73, a fixed frame 9 is fixedly connected to the top of the top plate 74, a driver 91 is fixedly connected to the top side of the fixed frame 9, and a grinding wheel 92 is fixedly connected to the output end of the driver 91.

[0019] Furthermore, when grinding the workpiece, the bottom support plate 2 is placed on the lower working surface 11 of the bed 1, and then the bottom support plate 2 is fixed by the limit bolts 22. During the working process, the driver 91 can be turned on, and the driver 91 can be used to drive the grinding wheel 92 to rotate. When the grinding wheel 92 rotates, it can grind the bottom of the workpiece located on the upper working surface 12. During the grinding process, the middle support plate 3 can be moved along the bottom support plate 2 to change the lateral position of the grinding wheel 92. By moving the small support plate 5 along the middle support plate 3, the longitudinal position of the grinding wheel 92 can be changed. Through this operation, the grinding wheel 92 can be used to perform all-round grinding on the bottom of the workpiece located on the upper working surface 12.

[0020] Combined with Figure 4 and Figure 5 As shown, the inner top wall of the fixed seat 7 is rotatably connected with a sleeve 75, the top of the sleeve 75 is fixedly docked with the bottom of the rotating seat 73, the bottom end of the sleeve 75 is fixedly connected with a bevel gear A76, and the inner wall of one side of the fixed seat 7 is rotatably connected with a bevel gear B77 that meshes with the bevel gear A76, the side of the fixed seat 7 close to the bevel gear B77 is rotatably connected with a shaft rod 79, and the end of the shaft rod 79 away from the fixed seat 7 is fixedly connected with a knob, the shaft rod 79 is fixedly docked with the bevel gear B77, and the top of the small pallet 5 is fixedly connected with a support frame 78 on one side close to the shaft rod 79, the shaft rod 79 is located in the support frame 78 and is rotatably connected thereto, the shaft rod 79 is long and can extend beyond the lower working surface 11 and the upper working surface 12 of the bed body 1, at this time, when the staff adjusts the direction of the grinding wheel 92, they do not need to put their hands between the lower working surface 11 and the upper working surface 12, thereby improving the protection of the staff.

[0021] Furthermore, when performing grinding work, the shaft 79 can be used to drive the bevel gear B77 to rotate. At this time, the bevel gear B77 drives the bevel gear A76 and the sleeve 75 to rotate. During the rotation of the sleeve 75, the rotating seat 73 and the top plate 74 can be driven to rotate. At this time, the top plate 74 can be used to drive the fixed frame 9, the driver 91 and the grinding wheel 92 to perform steering work, so that the grinding wheel 92 can change its angle to continue grinding the bottom of the workpiece on the upper working surface 12.

[0022] Combined with Figure 4 , Figure 5 , Figure 6 and Fig. 9 As shown, a guide opening 71 with a 90° arc structure is provided on one side of the top of the fixed seat 7, and magnet sheets 72 are embedded in the inner walls at both ends of the guide opening 71, and communicating holes 710 that are interconnected are provided between the rotating seat 73, the top plate 74 and the sleeve 75, and a mounting cavity 741 that is connected to the communicating hole 710 is provided on one side of the top plate 74, and a guide frame 8 is fixedly connected to the side of the sleeve 75 near the guide opening 71, and a movable cavity 81 is provided in the guide frame 8, and a connecting rod A82 is vertically slidably connected in the movable cavity 81, and a guide rod 83 is fixedly connected to the end of the top of the connecting rod A82 near the guide opening 71, and the top end of the guide rod 83 passes through the guide frame 8 and is slidably connected to the inner wall of the guide opening 71, and the guide rod 83 is made of metal material. When the guide rod 83 is fitted with the magnet sheet 72, the magnet sheet 72 can be used to magnetically attract the guide rod 83, so as to limit and fix the guide rod 83, thereby limiting the rotating seat 73. A transmission rod 84 is slidably connected in the connecting hole 710, and a limiting spring A85 is fixedly connected between the bottom end of the transmission rod 84 and the inner bottom wall of the sleeve 75. A connecting rod B87 is fixedly connected to the side of the top end of the transmission rod 84 close to the mounting cavity 741, and the connecting rod B87 is located in the mounting cavity 741, and the connecting rod B87 is slidably connected to the inner wall of the mounting cavity 741. A limiting spring B86 is fixedly connected between the top end of the transmission rod 84 and the inner top wall of the mounting cavity 741, and a pressure plate 88 is fixedly connected to the end of the connecting rod B87 away from the transmission rod 84.

[0023] Furthermore, during the rotation of the sleeve 75, it can drive the guide frame 8 to rotate together. At this time, the guide rod 83 slides along the guide opening 71. At this time, the guide opening 71 cooperates with the guide rod 83 to limit the maximum rotation angle of the sleeve 75 and the rotating seat 73 to ninety degrees. When the guide rod 83 moves to the end of the guide opening 71, the guide rod 83 is magnetically attracted by the magnet sheet 72 embedded in the guide opening 71, so as to limit and fix the guide rod 83, thereby limiting and fixing the sleeve 75 and the rotating seat 73, avoiding the problem that the rotating seat 73 rotates by itself during the grinding work due to external force, thereby improving the stability of the device during grinding work. When it is necessary to rotate the direction of the driver 91 and the grinding wheel 92 again, the staff can press the pressure plate 88 to drive the connecting rod B87 to descend through the pressure plate 88. At this time, the connecting rod B87 drives the transmission rod 84 to descend synchronously. In this process 86, and the limit spring A85 and the limit spring B86 start to rebound at the same time, driving the transmission rod 84 to lift to the initial position. At this time, the transmission rod 84 can drive the connecting rod A82, the guide rod 83, the connecting rod B87 and the pressure plate 88 to lift to their initial positions respectively. At this time, the guide rod 83 will be reinserted into the guide port 71 and cooperate with the guide port 71 to limit the rotation angle of the rotating seat 73 again.

[0024] Combined with Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, a plurality of evenly distributed limiting grooves 21 are provided on the side of the bottom support plate 2 away from the bed body 1, and a mounting plate 31 is fixedly connected to the side of the middle support plate 3 away from the bed body 1, and a turntable 32 is rotatably connected to the bottom of the mounting plate 31, and the height of the turntable 32 is flush with the height of the limiting groove 21, and a plurality of annular evenly distributed limiting plates 33 are fixedly connected to the turntable 32, and the spacing between each limiting plate 33 is the same as the width of the grinding wheel 92. At this time, when the limiting plates 33 follow the rotation of the turntable 32, when the grinding wheel 92 moves a distance equal to its width, a new limiting plate 33 is inserted in the limiting groove 21, so as to produce a pause effect on the middle support plate 3 during the movement, which means that the grinding wheel 92 has just moved a distance equal to its width. At this time, the grinding wheel 92 can continue to grind the workpiece using the previous grinding traces, thereby improving the uniformity of the grinding of the workpiece by the grinding wheel 92. A transmission disc 35 is fixedly connected to the top of the mounting plate 31. The top of the plate 35 is provided with a plurality of limiting holes 36 evenly distributed in an annular shape, and the interval angle between the limiting plates 33 is the same as the interval angle between the limiting holes 36. The top of the mounting plate 31 is fixedly connected with the mounting seat 4, and the top of the mounting seat 4 is provided with a receiving groove 41, and a U-shaped rod 42 is slidably connected in the receiving groove 41. The U-shaped rod 42 is a vertical sliding connection, and the U-shaped rod 42 cannot rotate and can only slide up and down through the slide groove and the slider. At this time, when the U-shaped rod 42 is inserted After the transmission disk 35 is inserted into the limiting hole 36, the U-shaped rod 42 can be used to cooperate with the limiting hole 36 to limit the transmission disk 35 and the turntable 32, and the limiting plate 33 can be used to cooperate with the limiting groove 21 to limit and fix the entire middle support plate 3, and the end of the U-shaped rod 42 away from the mounting seat 4 is located above the limiting hole 36 on the transmission disk 35 closest to the mounting seat 4, and a fixing spring 43 is fixedly connected between the end of the U-shaped rod 42 close to the mounting seat 4 and the inner bottom wall of the storage groove 41.

[0025] Furthermore, during the grinding process, when the middle support plate 3 is moved along the bottom support plate 2, the U-shaped rod 42 is first lifted by hand. At this time, one end of the U-shaped rod 42 is pulled out from the limiting hole 36 to release the limiting work on the transmission disk 35. At the same time, the other end of the U-shaped rod 42 will stretch the fixing spring 43. At this time, the middle support plate 3 can be smoothly moved along the bottom support plate 2 to change the lateral position of the grinding wheel 92. The limit groove 21 cooperates with the limit plate 33 to make the turntable 32 rotate. After each limit plate 33 is inserted into the limit groove 21 at the corresponding position, it can cause the middle support plate 3 to pause. The width is the same, therefore, when the middle support plate 3 pauses, it means that the grinding wheel 92 has just moved a distance the same as its width, and then the U-shaped rod 42 is released. At this time, the fixing spring 43 begins to rebound, driving the U-shaped rod 42 to descend, so that the other end of the U-shaped rod 42 is inserted into the limiting hole 36 of the transmission disk 35. At this time, the U-shaped rod 42 cooperates with the limiting hole 36 to limit the transmission disk 35, and thereby the turntable 32 is limited and fixed, and the middle support plate 3 can be limited at this time. At this time, only the small support plate 5 can be moved, and the small support plate 5 can be moved along the middle support plate 3 to ensure that the grinding wheel 92 can only move with the small support plate 5 to perform grinding work in the longitudinal direction.

[0026] Combined with Figure 3 As shown, one side of the middle support plate 3 is rotatably connected to a screw rod 6 through a frame body, and one end of the screw rod 6 away from the bed body 1 is fixedly connected to a handle 61, and one side of the small support plate 5 close to the screw rod 6 is fixedly connected to a transmission frame 51, which is sleeved on the screw rod 6 and threadedly connected thereto.

[0027] Furthermore, the screw rod 6 is driven to rotate by the handle 61. During the rotation of the screw rod 6, since the small pallet 5 is limited by the middle pallet 3, the rotational force between the screw rod 6 and the transmission frame 51 is converted into a linear force, which can drive the small pallet 5 to move along the middle pallet 3.

[0028] Working principle: first install the bed 1 at the designated position, then power on, and then use it. Use the lower working surface 11 and the upper working surface 12 to cooperate with the corresponding mold to punch the workpiece. After the punching is completed, remove the workpiece on the lower working surface 11, then place the bottom support plate 2 on the lower working surface 11, and then fix the bottom support plate 2 with the limit bolts 22. During the working process, the driver 91 can be turned on, and the driver 91 can be used to drive the grinding wheel 92 to rotate. When the grinding wheel 92 rotates, it can grind the bottom of the workpiece on the upper working surface 12; The middle support plate 3 can be moved along the bottom support plate 2 to change the lateral position of the grinding wheel 92. In the process of moving the middle support plate 3 along the bottom support plate 2, first lift the U-shaped rod 42 by hand. At this time, one end of the U-shaped rod 42 is pulled out from the limiting hole 36 to release the limiting work on the transmission plate 35. At the same time, the other end of the U-shaped rod 42 will stretch the fixing spring 43. At this time, the middle support plate 3 can be smoothly moved along the bottom support plate 2 to change the lateral position of the grinding wheel 92. The limiting groove 21 cooperates with the limiting plate 33 to make the turntable 32 rotate. After each limiting plate 33 is inserted into the limiting groove 21 at the corresponding position, it can cause the middle support plate 3 to pause. Since the spacing between the limiting plates 33 is the same as the width of the grinding wheel 92, when the middle support plate 3 pauses , which means that the grinding wheel 92 has just moved the same distance as its width, and then the U-shaped rod 42 is released. At this time, the fixing spring 43 begins to rebound, driving the U-shaped rod 42 to descend, so that the other end of the U-shaped rod 42 is inserted into the limiting hole 36 of the transmission plate 35. At this time, the U-shaped rod 42 cooperates with the limiting hole 36 to limit the transmission plate 35, and the rotating disk 32 is limited and fixed in this way, and the middle support plate 3 can be limited at this time. At this time, only the small support plate 5 can be moved, and the small support plate 5 can be moved along the middle support plate 3 to ensure that the grinding wheel 92 can only move with the small support plate 5 to perform grinding in the longitudinal direction. Through repeated operations, it can be avoided that when the grinding wheel 92 is grinding the workpiece, the grinding wheel 92 moves a distance exceeding its own width, resulting in missing parts in the grinding of the workpiece; When grinding, the shaft 79 can be used to drive the bevel gear B77 to rotate, and the bevel gear B77 drives the bevel gear A76 and the sleeve 75 to rotate. During the rotation of the sleeve 75, the rotating seat 73 and the top plate 74 can be driven to rotate. At this time, the top plate 74 can drive the fixing frame 9, the driver 91 and the grinding wheel 92 to turn, so that the grinding wheel 92 can change its angle and continue to grind the bottom of the workpiece on the upper working surface 12. During the rotation of the sleeve 75, it can drive the guide frame 8 to rotate together. At this time, the guide rod 83 slides along the guide opening 71. At this time, the guide opening 71 cooperates with the guide rod 83 to limit the maximum rotation angle of the sleeve 75 and the rotating seat 73 to ninety degrees. When the guide rod 83 moves to the end of the guide opening 71, the guide rod 83 is magnetically attracted by the magnet sheet 72 embedded in the guide opening 71, so as to limit and fix the guide rod 83, thereby limiting and fixing the sleeve 75 and the rotating seat 73. When it is necessary to rotate the direction of the driver 91 and the grinding wheel 92 again, the staff can press the pressure plate 88 to drive the connecting rod B87 to descend through the pressure plate 88. At this time, the connecting rod B87 drives the transmission rod 84 to descend synchronously. In this process, the transmission rod 84 drives the limit spring B86 to pull up and drive the limit spring A85 is squeezed and contracted. At the same time, the transmission rod 84 will drive the connecting rod A82 to descend along the active cavity 81. At this time, the connecting rod A82 drives the guide rod 83 to descend together, so that the guide rod 83 is moved out of the guide port 71 and retracted into the active cavity 81 of the guide frame 8. At this time, the magnetic attraction effect of the magnet sheet 72 on the guide rod 83 disappears, and the rotating seat 73 can continue to be controlled to rotate. During the rotation of the rotating seat 73, the pressure plate 88 is released. At this time, the limit spring A85 and the limit spring B86 begin to rebound at the same time, driving the transmission rod 84 to rise to the initial position. At this time, the transmission rod 84 can respectively drive the connecting rod A82, the guide rod 83, the connecting rod B87 and the pressure plate 88 to rise to their initial positions. At this time, the guide rod 83 will be reinserted into the guide port 71 and cooperate with the guide port 71 to re-limit the rotation angle of the rotating seat 73.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punch press worktable grinding device, comprising a bed body (1), wherein the bed body (1) is provided with a lower working surface (11) and an upper working surface (12), wherein: A bottom support plate (2) is placed on the lower working surface (11); a middle support plate (3) is slidably connected to the top of the bottom support plate (2); a small support plate (5) is slidably connected to the middle support plate (3); a fixed seat (7) is fixedly connected to the top of the small support plate (5); a rotating seat (73) is rotatably connected to the top of the fixed seat (7); a sleeve (75) is rotatably connected to the inner top wall of the fixed seat (7); a top end of the sleeve (75) is fixedly docked with a bottom end of the rotating seat (73); and the sleeve (75) is rotatably connected to the inner top wall of the fixed seat (7). The bottom end of the rotating seat (75) is fixedly connected to a bevel gear A (76); the inner wall of one side of the fixed seat (7) is rotatably connected to a bevel gear B (77) meshing with the bevel gear A (76); the side of the fixed seat (7) close to the bevel gear B (77) is rotatably connected to a shaft (79); the end of the shaft (79) away from the fixed seat (7) is fixedly connected to a knob; the shaft (79) is fixedly connected to the bevel gear B (77); the top of the rotating seat (73) is fixedly connected to a top plate (74); A fixing frame (9) is fixedly connected to the top of the top plate (74), a driver (91) is fixedly connected to one side of the top of the fixing frame (9), and a grinding wheel (92) is fixedly connected to the output end of the driver (91).

2. A punching machine worktable grinding device according to claim 1, characterized in that: A guide opening (71) with a 90° arc structure is provided on one side of the top of the fixing seat (7), and magnet pieces (72) are embedded in the inner walls at both ends of the guide opening (71).

3. A punching machine worktable grinding device according to claim 2, characterized in that: A communicating hole (710) communicating with each other is provided between the rotating seat (73), the top plate (74) and the sleeve (75); a mounting cavity (741) communicating with the communicating hole (710) is provided on one side of the top plate (74); a support frame (78) is fixedly connected to one side of the top of the small support plate (5) close to the shaft rod (79); the shaft rod (79) is located in the support frame (78) and is rotatably connected thereto.

4. A punch press worktable grinding device according to claim 3, characterized in that: A guide frame (8) is fixedly connected to one side of the sleeve (75) near the guide opening (71); a movable cavity (81) is provided in the guide frame (8); a connecting rod A (82) is vertically slidably connected to the movable cavity (81); a guide rod (83) is fixedly connected to one end of the top of the connecting rod A (82) near the guide opening (71); a top end of the guide rod (83) passes through the guide frame (8) and is slidably connected to the inner wall of the guide opening (71); a transmission rod (84) is slidably connected to the communicating hole (710); a limit spring A (85) is fixedly connected between the bottom end of the transmission rod (84) and the inner bottom wall of the sleeve (75); a connecting rod B (87) is fixedly connected to one side of the top of the transmission rod (84) near the mounting cavity (741); the connecting rod B (87) is located in the mounting cavity (741), and the connecting rod B (87) is slidably connected to the inner wall of the mounting cavity (741).

5. A punch press worktable grinding device according to claim 1, characterized in that: A plurality of evenly distributed limiting grooves (21) are provided on a side of the bottom supporting plate (2) away from the bed body (1), and both ends of the bottom supporting plate (2) are threadedly connected to limiting bolts (22).

6. A punching machine worktable grinding device according to claim 5, characterized in that: A mounting plate (31) is fixedly connected to a side of the middle support plate (3) away from the bed body (1); a turntable (32) is rotatably connected to the bottom of the mounting plate (31); the height of the turntable (32) is flush with the height of the limit slot (21); a plurality of evenly distributed limit plates (33) are fixedly connected to the turntable (32); a transmission plate (35) is fixedly connected to the top of the mounting plate (31); a plurality of evenly distributed limit holes (36) are arranged on the top of the transmission plate (35); and the interval angle between the limit plates (33) is the same as the interval angle between the limit holes (36).

7. A punching machine worktable grinding device according to claim 6, characterized in that: The top of the mounting plate (31) is fixedly connected to a mounting seat (4), the top of the mounting seat (4) is provided with a receiving groove (41), a U-shaped rod (42) is slidably connected in the receiving groove (41), an end of the U-shaped rod (42) away from the mounting seat (4) is located above a limiting hole (36) on the transmission plate (35) closest to the mounting seat (4), and a fixing spring (43) is fixedly connected between an end of the U-shaped rod (42) close to the mounting seat (4) and an inner bottom wall of the receiving groove (41).

8. The punch press worktable grinding device according to claim 1, characterized in that: One side of the middle support plate (3) is rotatably connected to a screw rod (6) through a frame body, and one end of the screw rod (6) away from the bed body (1) is fixedly connected to a handle (61).

9. A punch press worktable grinding device according to claim 8, characterized in that: A transmission frame (51) is fixedly connected to one side of the small support plate (5) close to the screw rod (6); the transmission frame (51) is sleeved on the screw rod (6) and threadedly connected thereto.

10. The punching machine worktable grinding device according to claim 4, characterized in that: A limit spring B (86) is fixedly connected between the top end of the transmission rod (84) and the top wall of the installation cavity (741), and a pressure plate (88) is fixedly connected to one end of the connecting rod B (87) away from the transmission rod (84).

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