Multi-shaft pneumatic grinding machine

Abstract

The utility model discloses a multi-axis pneumatic grinding machine which comprises a base, an X-axis and Y-axis movement assembly, a Z-axis movement mechanism, a support, a grinding frame, an overturning box, a box rotating device, pneumatic grinding heads and a workpiece clamping rotating table, the cross section of the overturning box is square, and a plurality of pneumatic grinding heads are arranged on the four side walls of the overturning box along a straight line. And the roughness of the pneumatic polishing heads on different side walls is different. The pneumatic polishing machine is reasonable in structural design, the four side walls of the turnover box are each provided with a row of pneumatic polishing heads with different roughness, the turnover box can be driven by the box rotating device to turn over, the pneumatic polishing heads with the needed roughness face a workpiece, and the pneumatic polishing heads with the needed roughness are matched with the actions of the XY-axis movement mechanism, the Z-axis movement mechanism and the workpiece clamping rotating table, so that the workpiece can be automatically polished. And the polishing requirements of different roughness can be met through one-time clamping, the flexibility is high, and the working efficiency is remarkably improved. And the pneumatic grinding head is more suitable for polishing metal and other hard materials.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and polishing, in particular to a multi-axis pneumatic grinder. Background Art

[0002] In the processing of daily hardware parts, it is often necessary to polish the sides of some parts. In order to improve the side polishing effect, the applicant applied for an invention patent named "Multi-station CNC side polishing machine" and publication number "CN107971900A" on January 11, 2018. It discloses a multi-station CNC side polishing machine, which includes a base, an X-axis motion mechanism, a Y-axis motion mechanism, a gantry, a lifting beam, a lifting screw, an up and down reciprocating motion device, a lifting height adjustment device, a feeding motion mechanism, a water basin, a workpiece clamping module and a plurality of polishing devices; the plurality of polishing devices are arranged side by side on the lifting beam corresponding to one side of the workpiece clamping module through a feeding motion mechanism. Although it can achieve the purpose of grinding and polishing, multiple polishing devices are arranged side by side on the same plane at the same time, and only have a single grinding roughness. For example, if only coarse polishing or fine polishing is required, when polishing with different roughness is required, the grinding head with the corresponding roughness can only be replaced manually or the workpiece can be transferred to another grinder. The operation is more troublesome, time-consuming and labor-intensive, and the work efficiency is low. Utility Model Content

[0003] In view of the above-mentioned shortcomings, the purpose of the utility model is to provide a multi-axis pneumatic grinder with reasonable structural design and capable of performing various roughness processing.

[0004] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0005] A multi-axis pneumatic grinder, comprising a base, an XY-axis motion assembly, a Z-axis motion mechanism, a bracket, a grinding frame, a flip box, a rotating box device, a pneumatic grinding head and a workpiece clamping rotary table, wherein the bracket is vertically arranged at the rear position of the base, the Z-axis motion mechanism is arranged on the bracket, the grinding frame is arranged on the Z-axis motion mechanism and is driven by the Z-axis motion mechanism to reciprocate in the Z-axis direction, both ends of the flip box are rotatably arranged on the grinding frame, the rotating box device is arranged on the grinding frame and can drive the flip box to flip, the cross-section of the flip box is square, and a plurality of pneumatic grinding heads are arranged in a straight line on its four side walls, and the roughness of the pneumatic grinding heads on different side walls is different; the workpiece clamping rotary table is arranged at the front position of the base through the XY-axis motion assembly.

[0006] As a preferred solution of the utility model, the grinding frame includes a cross frame and two end plates symmetrically arranged at both ends of the cross frame, and has good structural stability and can withstand a large load.

[0007] As a preferred solution of the utility model, a rotating shaft is provided on one end face of the flip box, and a bearing seat adapted to the rotating shaft is provided on the corresponding end plate, and a flange pipe is provided on the other end face of the flip box. The flip box has a stable structure and can be installed with four rows of pneumatic grinding heads with different roughnesses. By flipping, it can meet the grinding requirements of different roughnesses.

[0008] As a preferred solution of the utility model, the turning box device includes a servo motor and a hollow rotating platform. The hollow rotating platform is installed on the end plate corresponding to the position of the flange tube. The flange tube is connected to the rotating table of the hollow rotating platform. The servo motor is used to drive the hollow rotating platform, thereby driving the flip box to flip.

[0009] As a preferred solution of the utility model, the pneumatic grinding head includes a mounting seat, a pneumatic grinding assembly and a floating seat, a mounting plate is provided on the outer wall of the mounting seat, a floating cavity is provided in the mounting seat, the floating seat is movably arranged in the floating cavity through a spring assembly, and the pneumatic grinding assembly is installed on the floating seat.

[0010] As a preferred solution of the utility model, the pneumatic grinding assembly includes a grinding disc and a pneumatic grinder, and the grinding disc is arranged on the rotating shaft of the pneumatic grinder through an eccentric assembly.

[0011] As a preferred solution of the utility model, a mounting hole matching the shape of the mounting seat is provided on the side wall of the turnover box, so as to facilitate the quick replacement or installation of different types of pneumatic grinding heads.

[0012] As a preferred solution of the utility model, the workpiece clamping rotary table includes a box seat, a lifting frame, a lifting drive device, a spinning positioning device, a rotating platform and a rotating motor. Several rotating platforms are arranged side by side on the box seat at intervals. The rotating motor is arranged on the box seat and drives all rotating platforms to rotate synchronously through a synchronous belt. The lifting frame is arranged on the box seat. The lifting drive device is arranged on the box seat and can drive the lifting frame to perform lifting and lowering movements relative to the box seat. Several spinning positioning devices are arranged on the lifting frame corresponding to the positions of the rotating platforms, and the lifting frame drives the several spinning positioning devices to adjust their heights.

[0013] As a preferred solution of the utility model, the spin-pressing positioning device includes a positioning cylinder, a pressure seat and a rubber block, the pressure seat is arranged on the piston rod of the positioning cylinder, the pressure seat is provided with a bearing, and the rubber block is installed on the bearing of the pressure seat through a rotating shaft, so that the rubber block can rotate while positioning the workpiece; the lifting frame includes a long plate, an inner tube, an outer tube, a screw rod and a nut, the outer tube is arranged on the box seat, the long plate is arranged at the upper end of the inner tube, the lower end of the inner tube is movably inserted into the outer tube, the nut is fixed in the inner tube and cooperates with the screw rod, and one end of the screw rod is connected to the lifting drive device.

[0014] As a preferred solution of the utility model, it also includes a protection box that can cover the entire device, and the protection box is provided with an operating door, which not only improves the safety of the device, but also reduces noise pollution and maintenance costs.

[0015] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design, and a row of pneumatic grinding heads with different roughness are arranged on each of the four side walls of the turning box. The turning box can be driven to turn by the turning box device, so that the pneumatic grinding head with the required roughness is directed toward the workpiece, and the action coordination of the XY axis motion mechanism, the Z axis motion mechanism and the workpiece clamping rotating table can meet the grinding requirements of different roughnesses with one clamping, which is highly flexible and significantly improves work efficiency. Moreover, the use of pneumatic grinding heads is more suitable for polishing metals and other hard materials.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model with the cover body opened.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the Z-axis motion mechanism in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the transfer box device of the utility model.

[0021] Figure 5 It is a structural schematic diagram of the overturn box in the utility model.

[0022] Figure 6 It is a structural schematic diagram of the pneumatic grinding head in the utility model.

[0023] Figure 7 It is a structural schematic diagram of a workpiece clamping rotary table in the utility model. DETAILED DESCRIPTION

[0024] For example, see Figures 1 to 7 The present embodiment provides a multi-axis pneumatic grinder, which includes a base 1, an XY-axis motion assembly 2, a Z-axis motion mechanism 3, a bracket 4, a grinding frame 5, a flip box 6, a rotating box device 7, a pneumatic grinding head 8, a workpiece clamping rotating table 9 and a protective box 10.

[0025] In this embodiment, a five-station structure is used for explanation, that is, the number of the pneumatic grinding head 8, the rotating platform and the spinning positioning device is five. In other embodiments, the number of the pneumatic grinding head 8, the rotating platform and the spinning positioning device may be three, four, six or more stations.

[0026] The bracket 4 is vertically arranged at the rear of the base 1, the Z-axis motion mechanism 3 is arranged on the bracket 4, and the grinding frame 5 is arranged on the Z-axis motion mechanism 3 and is driven by the Z-axis motion mechanism 3 to reciprocate in the Z-axis direction. The grinding frame 5 includes a horizontal frame 51 and two end plates 52 symmetrically arranged at both ends of the horizontal frame 51. The structure has good stability and can withstand a large load, so that it is not easy to deform or shake when carrying the turning box 6 and the pneumatic grinding head 8, thereby ensuring stability and accuracy during the grinding process.

[0027] Both ends of the flip box 6 are rotatably arranged on the grinding frame 5. Specifically, a rotating shaft 61 is provided on one end face of the flip box 6, and a bearing seat 53 matched with the rotating shaft 61 is provided on the corresponding end plate 52. A flange tube 62 is provided on the other end face of the flip box 6. The flip box 6 has a stable structure and can be installed with four rows of pneumatic grinding heads 8 with different roughness. By flipping, the grinding requirements of different roughness can be met. The rotating box device 7 is arranged on the grinding frame 5 and can drive the flip box 6 to perform a flipping movement. The rotating box device 7 includes a servo motor 71 and a hollow rotating platform 72. The hollow rotating platform 72 is installed on the end plate 52 corresponding to the position of the flange tube 62. The flange tube 62 is connected to the rotating table of the hollow rotating platform 72. The servo motor 71 is used to drive the hollow rotating platform 72, thereby driving the flip box 6 to flip.

[0028] The cross section of the flip box 6 is square, and a number of pneumatic grinding heads 8 are arranged in a straight line on the four side walls thereof, and the roughness of the pneumatic grinding heads 8 on different side walls is different; the pneumatic grinding head 8 includes a mounting seat 81, a pneumatic grinding assembly and a floating seat 82, a mounting plate 85 is provided on the outer wall of the mounting seat 81, a floating cavity is provided in the mounting seat 81, and the floating seat 82 is movably arranged in the floating cavity through a spring assembly, and the pneumatic grinding assembly is installed on the floating seat 82, so that the pneumatic grinding assembly can fine-tune the angle and pressure according to the surface condition of the workpiece when contacting the workpiece, so as to achieve better fitting and grinding effects. The pneumatic grinding assembly includes a grinding disc 83 and a pneumatic grinder 84, and the grinding disc 83 is arranged on the rotating shaft 61 of the pneumatic grinder 84 through an eccentric assembly. In order to facilitate the rapid replacement or installation of different types of pneumatic grinding heads 8, a mounting hole 63 that matches the shape of the mounting seat 81 is provided on the side wall of the flip box 6. The tail of the mounting seat 81 is placed in the mounting hole 63 for positioning, and the screws are passed through the through holes on the mounting plate 85 and screwed on the box wall of the flip box 6 to achieve the purpose of installation and fixing.

[0029] The workpiece clamping rotating table 9 is arranged at the front position of the base 1 through the XY axis motion assembly 2. The XY axis motion assembly 2 includes an X axis motion mechanism and a Y axis motion mechanism stacked on each other. The X axis motion mechanism and the Y axis motion mechanism cooperate to drive the workpiece clamping rotating table 9 to move in the X axis and Y axis directions.

[0030] See also Figure 7 The workpiece clamping rotary table 9 includes a box seat 91, a lifting frame 92, a lifting drive device 93, a spinning positioning device 94, a rotating platform 95 and a rotating motor 96. Five rotating platforms 95 are arranged side by side on the box seat 91 at intervals. The rotating motor 96 is arranged on the box seat 91 and drives all the rotating platforms 95 to rotate synchronously through a synchronous belt. The lifting frame 92 is arranged on the box seat 91. The lifting drive device 93 is arranged on the box seat 91 and can drive the lifting frame 92 to lift relative to the box seat 91. Five spinning positioning devices 94 are arranged on the lifting frame 92 corresponding to the positions of the rotating platform 95, and the lifting frame 92 drives the five spinning positioning devices 94 to adjust their height. The spin-pressing positioning device 94 includes a positioning cylinder, a pressure seat and a rubber block. The pressure seat is arranged on the piston rod of the positioning cylinder. A bearing is provided on the pressure seat. The rubber block is installed on the bearing of the pressure seat through a rotating shaft, so that the rubber block can rotate while positioning the workpiece; the lifting frame 92 includes a long plate, an inner tube, an outer tube, a screw rod and a nut. The outer tube is arranged on the box seat 91, and the long plate is arranged at the upper end of the inner tube. The lower end of the inner tube is movably inserted into the outer tube. The nut is fixed in the inner tube and cooperates with the screw rod. One end of the screw rod is connected to the lifting drive device 93.

[0031] The base 1 is provided with a protective box 10, which can cover the entire device. The protective box 10 is provided with an operating door, which can play a safety protection role during the operation of the device, prevent debris from splashing and accidental touch by personnel, not only improve the safety of equipment use, but also reduce noise pollution and maintenance costs. The side of the protective box 10 is provided with a control box 11, and the XY axis motion assembly 2, Z axis motion mechanism 3, rotating box device 7, pneumatic grinding head 8 and workpiece clamping rotating table 9 are all connected to the control box 11 and controlled by it.

[0032] During operation, the workpiece is placed on the rotating platform 95, and the lifting frame 92 is driven by the lifting drive device 93 to descend to a predetermined height, and the spinning positioning device 94 is controlled to press down to position the workpiece on the rotating platform 95. The rotating motor 96 drives all the rotating platforms 95 to rotate synchronously through the synchronous belt, so as to drive all the workpieces to rotate at the same time. A row of pneumatic grinding heads 8 with different roughness are pre-arranged on each of the four side walls of the turning box 6, such as fine grinding heads, medium fine grinding heads, rough grinding heads and medium rough grinding heads. During grinding, the turning box 6 can be driven to turn over by the turning box device 7, so that the pneumatic grinding head 8 with the required roughness is facing the workpiece, and then the action of the XY axis motion mechanism, the Z axis motion mechanism 3 and the workpiece clamping rotating table 9 are combined to achieve the grinding process of different roughnesses in one clamping.

[0033] According to the disclosure and teaching of the above specification, technicians in the field of the present invention can also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementation disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. Other grinders that are the same or similar to the present invention are all within the scope of protection of the present invention.

Claims

1. A multi-axis pneumatic grinder, comprising a base, an XY axis motion assembly and a Z axis motion mechanism, characterized in that: It also includes a bracket, a grinding frame, a flip box, a rotating box device, a pneumatic grinding head and a workpiece clamping rotating table. The bracket is vertically arranged at the rear position of the base, the Z-axis motion mechanism is arranged on the bracket, the grinding frame is arranged on the Z-axis motion mechanism and is driven by it to reciprocate in the Z-axis direction, the two ends of the flip box are rotatably arranged on the grinding frame, the rotating box device is arranged on the grinding frame, and can drive the flip box to flip. The cross-section of the flip box is square, and a number of pneumatic grinding heads are arranged in a straight line on its four side walls, and the roughness of the pneumatic grinding heads on different side walls is different; the workpiece clamping rotating table is arranged at the front position of the base through an XY-axis motion component.

2. The multi-axis pneumatic grinding machine according to claim 1, characterized in that: The grinding frame comprises a cross frame and two end plates symmetrically arranged at two ends of the cross frame.

3. The multi-axis pneumatic grinding machine according to claim 2, characterized in that: A rotating shaft is arranged on one end surface of the turnover box, and a bearing seat matched with the rotating shaft is arranged on the corresponding end plate, and a flange pipe is arranged on the other end surface of the turnover box.

4. The multi-axis pneumatic grinding machine according to claim 3, characterized in that: The rotating box device includes a servo motor and a hollow rotating platform. The hollow rotating platform is installed on the end plate corresponding to the position of the flange tube. The flange tube is connected to the rotating table of the hollow rotating platform. The servo motor is used to drive the hollow rotating platform.

5. The multi-axis pneumatic grinding machine according to claim 3, characterized in that: The pneumatic grinding head includes a mounting seat, a pneumatic grinding assembly and a floating seat. A mounting plate is provided on the outer wall of the mounting seat. A floating cavity is provided in the mounting seat. The floating seat is movably arranged in the floating cavity through a spring assembly. The pneumatic grinding assembly is installed on the floating seat.

6. The multi-axis pneumatic grinding machine according to claim 5, characterized in that: The pneumatic grinding assembly comprises a grinding disc and a pneumatic grinder, and the grinding disc is arranged on the rotating shaft of the pneumatic grinder through an eccentric assembly.

7. The multi-axis pneumatic grinding machine according to claim 5, characterized in that: The side wall of the turnover box is provided with a mounting hole matched with the outer shape of the mounting seat.

8. The multi-axis pneumatic grinding machine according to claim 1, characterized in that: The workpiece clamping rotary table includes a box seat, a lifting frame, a lifting drive device, a spinning positioning device, a rotating platform and a rotating motor. Several rotating platforms are arranged side by side on the box seat at intervals. The rotating motor is arranged on the box seat and drives all rotating platforms to rotate synchronously through a synchronous belt. The lifting frame is arranged on the box seat. The lifting drive device is arranged on the box seat and can drive the lifting frame to perform lifting and lowering movements relative to the box seat. Several spinning positioning devices are arranged on the lifting frame corresponding to the positions of the rotating platforms.

9. The multi-axis pneumatic grinding machine according to claim 8, characterized in that: The spinning positioning device includes a positioning cylinder, a pressure seat and a rubber block. The pressure seat is arranged on the piston rod of the positioning cylinder. A bearing is provided on the pressure seat. The rubber block is installed on the bearing of the pressure seat through a rotating shaft. The lifting frame includes a long plate, an inner tube, an outer tube, a screw rod and a nut. The outer tube is arranged on the box seat. The long plate is arranged at the upper end of the inner tube. The lower end of the inner tube is movably inserted into the outer tube. The nut is fixed in the inner tube and cooperates with the screw rod. One end of the screw rod is connected to the lifting drive device.

10. The multi-axis pneumatic grinding machine according to any one of claims 1 to 9, characterized in that: The utility model also comprises a protection box which can cover the utility model as a whole, and an operating door is arranged on the protection box.

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