Single-group grinding machine

Abstract

The utility model discloses a single-set grinding machine. The single-set grinding machine comprises a machine base, a Y-axis moving mechanism, a Z-axis moving mechanism, an electric cylinder driving device, an up-down base, a supporting arm, a turning plate, an abrasive belt grinding module and a workpiece autorotation mechanism. The grinding device is reasonable in structural design, the rotating axis of the turning plate is aligned with the abrasive belt center line of the abrasive belt grinding module, the grinding requirement of the handle workpieces can be met only by driving the turning plate to rotate and swing through the electric cylinder driving device, the problem that traditional handle workpieces need to swing up and down by a large margin is solved, and the grinding efficiency is improved. The lifting stroke distance of the Z-axis moving mechanism is effectively shortened, loss is reduced, the working efficiency is improved, meanwhile, by combining the lifting action of the Z-axis moving mechanism, the front-back movement of the Y-axis moving mechanism and the matched action of the workpiece rotation mechanism, the handle workpieces are ground through the abrasive belt grinding module, and the grinding effect is good. The overall structure is simple, implementation is easy, and wide application and popularization are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and polishing, and particularly relates to a single-group grinding machine. Background Art

[0002] In the processing of daily hardware parts, it is often necessary to polish some parts. To improve the polishing effect, many polishing machines have been introduced on the market. However, for the polishing of parts with different shapes, special polishing machines need to be developed.

[0003] For polishing handle-like parts, for example, the utility model patent with the publication number "CN217493768U" and the name "Handle Polishing Equipment" discloses a handle polishing equipment, which includes a machine base, a handle grinding mechanism, a tool clamping mechanism, a displacement detection mechanism and a first rotation mechanism. The handle grinding mechanism is arranged on the machine base and can move in the vertical direction. It includes a first mounting plate and a sand belt grinding module connected to the first mounting plate; the tool clamping mechanism is located on one side of the handle grinding mechanism. The tool clamping mechanism includes at least one first clamping member for placing the tool to be processed and a second clamping member for placing the standard tool. Both the first clamping member and the second clamping member can move towards or away from the handle grinding mechanism, and the second clamping member can also rotate around the axis in the horizontal direction; the displacement detection mechanism is arranged in the vertical direction and corresponds to the position of the second clamping member. The displacement detection mechanism includes a detection head and a detection piece, and the detection piece is used to detect the displacement of the detection head moving in the vertical direction. The first rotation mechanism includes a cross plate and two vertical plates. The two vertical plates are arranged at intervals and are respectively connected to the cross plate. A rotating plate is rotatably connected between the two vertical plates. One end of the rotating plate is connected to a first motor for driving the rotating plate to rotate around the axis in the horizontal direction. At least one of the first clamping members and the second clamping member are arranged at intervals on the rotating plate. Since the sand belt grinding module can only move up and down along the Z-axis direction and cannot tilt and rotate, it can only rely on the first motor to drive the rotating plate to rotate around the axis in the horizontal direction to realize the up and down swing of the handle. Although this can realize the grinding of the handle, because the position of the handle is far from its swing axis, the up and down swing amplitude of the handle is large, so the handle grinding mechanism needs to make large-stroke lifting actions frequently to achieve the grinding purpose, which correspondingly increases the loss of the Z-axis moving mechanism and shortens the service life. Moreover, the large-stroke lifting action also takes more time and the working efficiency is low. Content of the Utility Model

[0004] Aiming at the above deficiencies, the purpose of the utility model is to provide a single-group grinding machine with reasonable structural design, which can reduce the loss of the Z-axis moving mechanism and has high grinding efficiency.

[0005] To achieve the above purpose, the technical solution provided by the utility model is:

[0006] A single-group grinding machine, which comprises a machine base, a Y-axis moving mechanism, a Z-axis moving mechanism, an electric cylinder driving device, an upper and lower seat, a support arm, a flap, a sand belt grinding module and a workpiece self-rotation mechanism. The Z-axis moving mechanism is vertically arranged on the machine base. The upper and lower seat is arranged on the Z-axis moving mechanism and is driven by it to make a reciprocating motion in the Z-axis direction. The sand belt grinding module is arranged on the front surface of the flap. One end of the support arm is fixed on the upper and lower seat, and the other end extends to the front surface of the flap and is hinged on the flap through a hinge shaft. The axis of the hinge shaft is aligned with the center line of the sand belt of the sand belt grinding module. The electric cylinder driving device is arranged on the upper and lower seat and can drive the flap to rotate around the hinge shaft. The Y-axis moving mechanism is arranged on the machine base corresponding to the front position of the Z-axis moving mechanism. The multi-station workpiece self-rotation mechanism is arranged on the Y-axis moving mechanism.

[0007] As a preferred solution of the present utility model, mounting plates are provided on both sides of the upper and lower seat. Rear vertical bearing seats are provided on the mounting plates. Front vertical bearing seats are provided on the back surface of the flap corresponding to the positions of the rear vertical bearing seats. One end of the electric cylinder driving device is arranged on the rear vertical bearing seat through a rear rotating shaft, and the other end of the electric cylinder driving device is arranged on the front vertical bearing seat through a front rotating shaft. The electric cylinder driving device is used to drive the flap to rotate, with stable rotation, improving the reliability and stability of the equipment operation and ensuring the grinding effect.

[0008] As a preferred solution of the present utility model, the sand belt grinding module comprises a sand belt motor, a driving pulley, an adjusting pulley, a sand belt tensioning mechanism and a number of pressing pulleys. The number of pressing pulleys are arranged side by side at intervals at the lower edge position of the flap. The sand belt motor is arranged on one side of the flap. The driving pulley is arranged on the driving shaft of the sand belt motor. The adjusting pulley is arranged on the other side of the flap through the sand belt tensioning mechanism. The sand belt passes around the driving pulley, the adjusting pulley and the pressing pulleys. The sand belt motor drives the driving pulley, and drives the adjusting pulley and the pressing pulleys through the sand belt to achieve the purpose of grinding.

[0009] As a preferred embodiment of the present utility model, the abrasive belt tensioning mechanism includes a tensioning seat, a tensioning cylinder, a bearing, a tensioning frame, an intermediate seat and an offset adjusting handle. The tensioning cylinder is installed on the flap through the tensioning seat. The intermediate seat is arranged on the piston rod of the tensioning cylinder. An assembly cavity adapted to the outer shape of the bearing is provided on the back surface of the tensioning frame, and the bearing is fixed in the assembly cavity. An installation shaft installed in the inner ring of the bearing is provided on the front surface of the intermediate seat. The two offset adjusting handles are symmetrically arranged on both sides of the tensioning frame and can press against the top surfaces on both sides of the intermediate seat. The adjusting pulley is arranged on the tensioning frame. By extending and retracting the tensioning cylinder, the position of the adjusting pulley is adjusted to achieve the purpose of adjusting the tension of the abrasive belt. By adjusting the rotation angle of the tensioning frame through the offset adjusting handle, the deflection angle of the adjusting pulley is adjusted to realize the offset adjustment of the abrasive belt.

[0010] As a preferred embodiment of the present utility model, an avoidance opening is provided on the flap corresponding to the position between two adjacent pressing pulleys. Through the avoidance opening, handle-shaped workpieces can be avoided, which is more conducive to the grinding process.

[0011] As a preferred embodiment of the present utility model, arm holes through which the support arms pass are provided on the flap, and a hinge seat is provided at each of the two positions corresponding to both sides of the arm holes. Both ends of the hinge shaft are arranged on the hinge seats, and the connection structure is stable and the swing is flexible.

[0012] As a preferred embodiment of the present utility model, the workpiece self-rotation mechanism includes a base, a plate seat, a self-rotation jig and a self-rotation motor. The plate seat is vertically arranged on the base, and a plurality of self-rotation jigs are arranged side by side on the plate seat. The self-rotation motor drives all the self-rotation jigs to rotate synchronously through a synchronous belt assembly to realize the self-rotation grinding of handle-shaped workpieces.

[0013] As a preferred embodiment of the present utility model, the self-rotation jig includes a self-rotation sleeve seat, a self-rotation shaft and a workpiece jig. The self-rotation shaft is arranged on the self-rotation sleeve seat through two tapered roller bearings, and the workpiece jig is arranged at the front end of the self-rotation shaft, which is suitable for clamping and grinding various handle-shaped workpieces.

[0014] As a preferred embodiment of the present utility model, the synchronous belt assembly includes a driving synchronous pulley, a driven synchronous pulley, a synchronous guide pulley, a tensioning synchronous pulley, a support plate, a tensioning eccentric disc and a synchronous belt. The driving synchronous pulley is arranged on the driving shaft of the self-rotation motor, the driven synchronous pulley is arranged at the tail end of the self-rotation shaft, the tensioning eccentric disc is arranged on the base through the support plate, the tensioning synchronous pulley is arranged on the eccentric shaft of the tensioning eccentric disc, the synchronous guide pulley is arranged on the plate seat corresponding to the position between two adjacent driven synchronous pulleys, and the synchronous belt passes around the driving synchronous pulley, the driven synchronous pulley, the synchronous guide pulley and the tensioning synchronous pulley to realize synchronous rotation.

[0015] As a preferred embodiment of the present utility model, a machine cover is provided on the machine base. An operation opening is provided on the front surface of the machine cover, and an external electric control box is provided on the side wall of the machine cover. The Y-axis moving mechanism, the Z-axis moving mechanism, the electric cylinder driving device, the sand belt grinding module, and the workpiece self-rotation mechanism are respectively connected to the external electric control box and controlled by it.

[0016] The beneficial effects of the present utility model are as follows: The structure of the present utility model is reasonably designed. Since the rotation axis of the flap is aligned with the center line of the sand belt of the sand belt grinding module, only the electric cylinder driving device needs to drive the flap to rotate and swing to meet the grinding requirements of the handle-shaped workpiece, avoiding the problem that the traditional handle-shaped workpiece needs to swing up and down greatly, effectively shortening the lifting stroke distance of the Z-axis moving mechanism, reducing losses, and thus improving work efficiency. At the same time, in combination with the lifting action of the Z-axis moving mechanism, the forward and backward movement of the Y-axis moving mechanism, and the coordinated action of the workpiece self-rotation mechanism, the sand belt grinding module grinds the handle-shaped workpiece, and the grinding effect is good. In addition, the overall structure is simple, easy to implement, and conducive to wide promotion and application.

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 is an internal structural schematic diagram of the present utility model.

[0020] Figure 3 is a structural schematic diagram of the sand belt grinding module in the present utility model.

[0021] Figure 4 is an exploded structural schematic diagram of the sand belt grinding module in the present utility model.

[0022] Figure 5 is a structural schematic diagram of the sand belt tensioning mechanism in the present utility model.

[0023] Figure 6 is a structural schematic diagram of the workpiece self-rotation mechanism in the present utility model.

[0024] Figure 7 is a structural schematic diagram of the self-rotation jig in the present utility model. Detailed Embodiments

[0025] Embodiment, see Figures 1 to 7 , a single-group grinding machine provided in this embodiment includes a machine base 1, a Y-axis moving mechanism 2, a Z-axis moving mechanism 3, an electric cylinder driving device 4, an upper and lower seat 5, a support arm 6, a sand belt grinding module 7, a workpiece self-rotation mechanism 8, a flap 9, and a machine cover 10.

[0026] The Z-axis moving mechanism 3 is vertically arranged on the machine base 1, and the upper and lower seat 5 is arranged on the Z-axis moving mechanism 3 and is driven by the same to reciprocate in the Z-axis direction.

[0027] The abrasive belt grinding module 7 is arranged on the front surface of the turning plate 9. Specifically, the abrasive belt grinding module 7 includes an abrasive belt motor 71, a driving pulley 75, an adjusting pulley 72, an abrasive belt tensioning mechanism 73 and a plurality of pressing pulleys 74. The plurality of pressing pulleys 74 are arranged side by side at intervals at the lower edge position of the turning plate 9. Preferably, an avoidance opening 61 is provided on the turning plate 9 corresponding to the position between two adjacent pressing pulleys 74. The handle-like workpiece can be avoided through the avoidance opening 61, which is more conducive to the grinding process. The abrasive belt part wound between two adjacent pressing pulleys 74 is used for grinding and has a certain elasticity. The abrasive belt motor 71 is arranged on one side of the turning plate 9, the driving pulley 75 is arranged on the driving shaft of the abrasive belt motor 71, and the adjusting pulley 72 is arranged on the other side of the turning plate 9 through the abrasive belt tensioning mechanism 73. Specifically, the abrasive belt tensioning mechanism 73 includes a tensioning seat 731, a tensioning cylinder 732, a bearing 733, a tensioning frame 734, an intermediate seat 735 and a deviation adjusting handle 736. The tensioning cylinder 732 is installed on the turning plate 9 through the tensioning seat 731, the intermediate seat 735 is arranged on the piston rod of the tensioning cylinder 732, an assembly cavity adapted to the outer shape of the bearing 733 is provided on the back surface of the tensioning frame 734, the bearing 733 is fixed in the assembly cavity, a mounting shaft installed in the inner ring of the bearing 733 is provided on the front surface of the intermediate seat 735, and the two deviation adjusting handles 736 are symmetrically arranged on both sides of the tensioning frame 734 and can press against the top surfaces on both sides of the intermediate seat 735. The adjusting pulley 72 is arranged on the tensioning frame 734. By stretching and contracting the tensioning cylinder 732, the position of the adjusting pulley 72 is adjusted to achieve the purpose of adjusting the tension of the abrasive belt 76. By adjusting the rotation angle of the tensioning frame 734 through the deviation adjusting handle 736, the deflection angle of the adjusting pulley 72 is adjusted to realize the deviation adjustment of the abrasive belt 76. During operation, the abrasive belt 76 is wound around the driving pulley 75, the adjusting pulley 72 and the pressing pulleys 74. The abrasive belt motor 71 drives the driving pulley 75, and drives the adjusting pulley 72 and the pressing pulleys 74 through the abrasive belt 76 to achieve the purpose of grinding.

[0028] One end of the support arm 6 is fixed on the upper and lower seat 5, and the other end extends to the front surface of the turning plate 9 and is hinged on the turning plate 9 through a hinge shaft. Preferably, an arm hole 92 for the support arm 6 to pass through is provided on the turning plate 9, and a hinge seat 93 is provided on each of the two sides corresponding to the arm hole 92. Both ends of the hinge shaft are arranged on the hinge seats 93. The other end of the support arm 6 passes through the arm hole 92 and is arranged on the hinge shaft. The axis of the hinge shaft is aligned with the center line of the abrasive belt of the abrasive belt grinding module 7.

[0029] The electric cylinder driving device 4 is arranged on the upper and lower seats 5 and can drive the flap 9 to rotate about the hinge axis. Specifically, mounting plates 51 are provided on both sides of the upper and lower seats 5, and rear vertical bearing seats 52 are provided on the mounting plates 51. At the position corresponding to the rear vertical bearing seats 52, front vertical bearing seats 53 are provided on the back of the flap 9. One end of the electric cylinder driving device 4 is arranged on the rear vertical bearing seat 52 through a rear rotating shaft, and the other end of the electric cylinder driving device 4 is arranged on the front vertical bearing seat 53 through a front rotating shaft. Using the electric cylinder driving device 4 to drive the flap 9 to rotate, the rotation is stable, improving the reliability and stability of the equipment operation and ensuring the grinding effect.

[0030] The Y-axis moving mechanism 2 is arranged on the machine base 1 at the front position corresponding to the Z-axis moving mechanism 3. The multi-station workpiece self-rotation mechanism 8 is arranged on the Y-axis moving mechanism 2 and is driven by the Y-axis moving mechanism 2 to make a reciprocating movement in the Y-axis direction. The workpiece self-rotation mechanism 8 includes a pedestal 81, a plate seat 82, a self-rotation jig 83 and a self-rotation motor 84. The plate seat 82 is vertically arranged on the pedestal 81. A number of self-rotation jigs 83 are arranged side by side on the plate seat 82. The self-rotation motor 84 drives all the self-rotation jigs 83 to rotate synchronously through a synchronous belt assembly 85, realizing the self-rotation grinding of the shank-type workpieces. The self-rotation jig 83 includes a self-rotation sleeve seat 831, a self-rotation shaft 832 and a workpiece jig 833. The self-rotation shaft 832 is arranged on the self-rotation sleeve seat 831 through two tapered roller bearings 834. The workpiece jig 833 is arranged at the front end of the self-rotation shaft 832, suitable for clamping and grinding various shank-type workpieces. The synchronous belt assembly includes a driving synchronous pulley, a driven synchronous pulley, a synchronous guide pulley, a tensioning synchronous pulley, a support plate, a tensioning eccentric disc and a synchronous belt. The driving synchronous pulley is arranged on the driving shaft of the self-rotation motor 84. The driven synchronous pulley is arranged at the tail end of the self-rotation shaft 832. The tensioning eccentric disc is arranged on the pedestal 81 through the support plate. The tensioning synchronous pulley is arranged on the eccentric shaft of the tensioning eccentric disc. The synchronous guide pulley is arranged on the plate seat 82 at the position between two adjacent driven synchronous pulleys. The synchronous belt passes around the driving synchronous pulley, the driven synchronous pulley, the synchronous guide pulley and the tensioning synchronous pulley to realize synchronous rotation.

[0031] A machine cover 10 is provided on the machine base 1. An operation opening is provided on the front surface of the machine cover 10. An external-mounted electric control box 11 is provided on the side wall of the machine cover 10. The Y-axis moving mechanism 2, the Z-axis moving mechanism 3, the electric cylinder driving device 4, the abrasive belt grinding module 7 and the workpiece self-rotation mechanism 8 are respectively connected to the external-mounted electric control box 11 and are controlled by it.

[0032] During operation, the telescopic movement of the electric cylinder driving device 4 can control the turning of the flap 9 about the hinge axis. Since the axis of rotation of the flap 9 is aligned with the center line of the abrasive belt 76 of the abrasive belt grinding module 7, only by driving the flap 9 to rotate and swing by the electric cylinder driving device 4 can the grinding requirements of the handle-shaped workpiece be met, avoiding the problem that traditional handle-shaped workpieces need to swing up and down significantly. This effectively shortens the lifting stroke distance of the Z-axis moving mechanism 3, reduces losses, and improves work efficiency. At the same time, by combining the lifting movement of the Z-axis moving mechanism 3, the forward and backward movement of the Y-axis moving mechanism 2, and the coordinated movement of the workpiece rotation mechanism 8, the abrasive belt grinding module 7 grinds the handle-shaped workpiece, and the grinding effect is good, and the operation is simple and convenient.

[0033] According to the disclosure and teaching of the above specification, those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention. Other grinding machines using the same or similar ones are all within the protection scope of the present invention.

Claims

1. A single-group grinding machine, which comprises a machine base, a Y-axis moving mechanism and a Z-axis moving mechanism, and is characterized in that, It further includes an electric cylinder driving device, an upper and lower seat, a support arm, a flap, a sand belt grinding module, and a workpiece self-rotation mechanism. The Z-axis moving mechanism is vertically arranged on the machine base. The upper and lower seat is arranged on the Z-axis moving mechanism and is driven by it to make a reciprocating motion in the Z-axis direction. The sand belt grinding module is arranged on the front of the flap. One end of the support arm is fixed on the upper and lower seat, and the other end extends to the front of the flap and is hinged on the flap through a hinge shaft. The axis of the hinge shaft is aligned with the center line of the sand belt of the sand belt grinding module. The electric cylinder driving device is arranged on the upper and lower seat and can drive the flap to rotate around the hinge shaft. The Y-axis moving mechanism is arranged on the machine base corresponding to the front position of the Z-axis moving mechanism, and the multi-station workpiece self-rotation mechanism is arranged on the Y-axis moving mechanism.

2. The single-group grinding machine according to claim 1, wherein: Mounting plates are provided on both sides of the upper and lower seat. Rear vertical bearing seats are provided on the mounting plates. Front vertical bearing seats are provided on the back of the flap corresponding to the positions of the rear vertical bearing seats. One end of the electric cylinder driving device is arranged on the rear vertical bearing seat through a rear rotating shaft, and the other end of the electric cylinder driving device is arranged on the front vertical bearing seat through a front rotating shaft.

3. The single-group grinding machine according to claim 2, characterized in that: The sand belt grinding module includes a sand belt motor, a driving pulley, an adjusting pulley, a sand belt tensioning mechanism, and a number of pressing pulleys. The number of pressing pulleys are arranged side by side at intervals at the lower edge position of the flap. The sand belt motor is arranged on one side of the flap. The driving pulley is arranged on the driving shaft of the sand belt motor. The adjusting pulley is arranged on the other side of the flap through the sand belt tensioning mechanism. The sand belt passes around the driving pulley, the adjusting pulley, and the pressing pulleys.

4. The single-group grinding machine according to claim 3, characterized in that: The sand belt tensioning mechanism includes a tensioning seat, a tensioning cylinder, a bearing, a tensioning frame, an intermediate seat, and an offset adjusting handle. The tensioning cylinder is installed on the flap through the tensioning seat. The intermediate seat is arranged on the piston rod of the tensioning cylinder. An assembly cavity adapted to the outer shape of the bearing is provided on the back of the tensioning frame. The bearing is fixed in the assembly cavity. An installation shaft installed in the inner ring of the bearing is provided on the front of the intermediate seat. Two offset adjusting handles are symmetrically arranged on both sides of the tensioning frame and can press against the top surfaces on both sides of the intermediate seat. The adjusting pulley is arranged on the tensioning frame.

5. The single-group grinding machine according to claim 3, wherein: Avoidance openings are provided on the flap corresponding to the positions between adjacent two pressing pulleys.

6. The single-group grinding machine according to claim 1, wherein: Arm holes for the support arm to pass through are provided on the flap. A hinge seat is provided on each side corresponding to the arm holes. Both ends of the hinge shaft are arranged on the hinge seats.

7. The single-group grinding machine according to claim 1, characterized in that: The workpiece self-rotation mechanism includes a pedestal, a plate seat, a self-rotation fixture, and a self-rotation motor. The plate seat is vertically arranged on the pedestal. A number of self-rotation fixtures are arranged side by side on the plate seat. The self-rotation motor drives all the self-rotation fixtures to rotate synchronously through a synchronous belt assembly.

8. The single-group grinding machine according to claim 7, wherein: The self-rotation fixture includes a self-rotation sleeve seat, a self-rotation shaft, and a workpiece fixture. The self-rotation shaft is arranged on the self-rotation sleeve seat through two tapered roller bearings. The workpiece fixture is arranged at the front end of the self-rotation shaft.

9. The single-group grinding machine according to claim 8, characterized in that: The synchronous belt assembly includes a driving synchronous pulley, a driven synchronous pulley, a synchronous guide pulley, a tensioning synchronous pulley, a support plate, a tensioning eccentric disc and a synchronous belt. The driving synchronous pulley is arranged on the driving shaft of the rotation motor. The driven synchronous pulley is arranged at the tail end of the rotation shaft. The tensioning eccentric disc is arranged on the pedestal through the support plate. The tensioning synchronous pulley is arranged on the eccentric shaft of the tensioning eccentric disc. The synchronous guide pulley is arranged on the plate base corresponding to the position between two adjacent driven synchronous pulleys. The synchronous belt bypasses the driving synchronous pulley, the driven synchronous pulley, the synchronous guide pulley and the tensioning synchronous pulley.

10. The single-group grinding machine according to claim 1, characterized in that: A machine cover is arranged on the machine base. An operation opening is arranged on the front surface of the machine cover. An external-mounted electric control box is arranged on the side wall of the machine cover. The Y-axis moving mechanism, the Z-axis moving mechanism, the electric cylinder driving device, the abrasive belt grinding module and the workpiece rotation mechanism are respectively connected with the external-mounted electric control box and are controlled by it.

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