Multi-grinding-head grinding structure

Abstract

The utility model discloses a multi-grinding-head grinding structure which comprises a main shaft box, a grinding motor, main shafts, a working wheel, a driving wheel, a driving wheel, a driven wheel and an abrasive belt tensioning device, a plurality of main shafts are movably arranged on the main shaft box side by side, and the driven wheel and the working wheel are coaxially fixed on the main shafts. The abrasive belt tensioning device is located on one side of the spindle box, the polishing motor is arranged on the other side of the spindle box, and the driving wheel and the driving wheel are coaxially fixed to a driving shaft of the polishing motor. The structure has a grinding wheel grinding mode and an abrasive belt grinding mode. A driven wheel and a working wheel are coaxially arranged on the main shaft, and the working wheel can be directly used for making contact with a workpiece to achieve the purpose of grinding through a grinding wheel and can also be used for cooperating with an abrasive belt to operate to make contact with the workpiece through the abrasive belt to achieve the purpose of grinding through the abrasive belt; the multiple working wheels are driven by the same motor, a traditional synchronous control system is omitted, it is effectively guaranteed that the rotating speeds of all the working wheels are the same, and then the consistency of the grinding effect of all the workpieces is guaranteed; and the consistency of the grinding effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, in particular to a multi-grinding head grinding structure applied to a grinder. Background Art

[0002] In the processing of daily hardware parts, some parts often need to be polished. In order to improve the polishing effect, many automatic polishing machines are launched on the market.

[0003] For example, the utility model patent with publication number "CN208729479U" and the name "A four-axis linkage mirror polishing device" discloses a four-axis linkage mirror polishing device, the principle of which is that the A-axis rotation drive unit is driven by a drive motor to drive the divider to drive the product to rotate, and is linked with the X and Z drive units according to the product contour trajectory. The grinding wheel device is driven by the motor to rotate and moves up and down with the Y-axis motion group. After cyclic processing, the product polishing effect reaches the mirror standard requirements to achieve the polishing of the product. Liquid medium polishing is used, and multiple groups of grinding heads can polish multiple products at the same time. Multiple groups of grinding heads, namely the polishing and grinding units, respectively include a grinding drive motor and a grinding wheel connected to the grinding drive motor through a rotating shaft. Each grinding wheel needs to be driven by a grinding drive motor. The synchronous control system is relatively complicated, and it is difficult to ensure that the grinding effects of each group of grinding heads are consistent. It is also only suitable for grinding wheels, not sanding belts, and it is difficult to meet diverse grinding needs. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the purpose of the utility model is to provide a multi-grinding head grinding structure with reasonable structural design, a grinding wheel grinding mode and a sanding belt grinding mode, and good grinding effect consistency.

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

[0006] A multi-grinding head grinding structure, comprising a spindle box, a grinding motor, a spindle, a working wheel, a driving wheel, a driving wheel, a driven wheel and a sand belt tensioning device, wherein a plurality of spindles are movably arranged side by side on the spindle box, the driven wheel and the working wheel are coaxially fixed on the spindle, a sand belt pressure wheel is provided at a position corresponding to the position between two adjacent working wheels and a belt pressure wheel is provided at a position corresponding to the side of the driven wheel, the sand belt tensioning device is located on one side of the spindle box, the grinding motor is arranged on the other side of the spindle box, and the driving wheel and the driving wheel are coaxially fixed on the driving shaft of the grinding motor;

[0007] The grinding belt is wound around the driving wheel, the belt tensioning device, the working wheel and the belt pressure wheel to achieve the purpose of grinding with the sand belt, or the transmission belt is wound around the driving wheel, the belt pressure wheel and the driven wheel to achieve the purpose of grinding with the working wheel.

[0008] As a preferred solution of the utility model, the working wheel is a rubber wheel or a grinding wheel. The grinding wheel can be used directly for grinding, and the rubber wheel is used to cooperate with the sanding belt to improve the running stability of the sanding belt.

[0009] As a preferred solution of the utility model, the spindle box is provided with a sleeve seat, and the sleeve seat is provided with a tapered roller bearing adapted to the spindle. The tapered roller bearing can effectively bear the radial and axial loads of the spindle during operation, ensure the smooth rotation of the spindle, and reduce wear and noise.

[0010] As a preferred solution of the utility model, the belt tensioning device includes a cylinder fixing seat, a tensioning cylinder, an adjusting wheel, a rotating bearing, a wheel frame, a mounting seat and an adjusting handle, the cylinder body of the tensioning cylinder is fixed on the cylinder fixing seat, the mounting seat is arranged on the piston rod of the tensioning cylinder, the back of the wheel frame is provided with an assembly cavity adapted to the shape of the rotating bearing, the rotating bearing is fixed in the assembly cavity, the front of the mounting seat is provided with an installation shaft installed on the inner ring of the rotating bearing, the two adjusting handles are symmetrically arranged on both sides of the wheel frame and can press on the top surfaces of both sides of the mounting seat, and the adjusting wheel is arranged on the wheel frame. The position of the adjusting wheel is controlled by the cylinder to adjust the tension of the belt, so as to ensure that the belt is stable and not loose during the grinding process, and improve the grinding quality and efficiency.

[0011] As a preferred solution of the utility model, a flange pipe is provided at one end of the spindle box, a flange shaft is provided at the other end, and a motor mounting plate is provided at the end of the flange shaft. The design of the flange pipe and the flange shaft facilitates the connection and fixation of the spindle box with other components, and the motor mounting plate is used to install and position the grinding motor, so the structure is stable and easy to install and disassemble.

[0012] As a preferred solution of the utility model, a boss is provided at one end of the motor mounting plate, an assembly hole adapted to the flange shaft is provided on the boss, a threaded hole connected to the assembly hole is radially provided on the outer wall of the boss, and a locking screw is screwed on the threaded hole, which makes installation simple and convenient.

[0013] As a preferred solution of the utility model, the belt pressure wheel includes an adjustment seat, an adjustment column and a deep groove ball bearing, wherein the adjustment column is vertically arranged on one end of the adjustment seat, and a long adjustment hole is arranged on the other end of the adjustment seat, and a plurality of deep groove ball bearings are stacked and sleeved on the upper end of the adjustment column. The front and rear positions of the adjustment seat can be adjusted through the long adjustment hole, and the deep groove ball bearing ensures that the pressure wheel rotates flexibly, reducing the wear of the belt.

[0014] As a preferred solution of the utility model, the belt pressure wheel and the sanding belt pressure wheel have the same structure, and are easy to produce and install.

[0015] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design and has a grinding wheel grinding mode and a sanding belt grinding mode. A driven wheel and a working wheel are coaxially arranged on the main shaft. The working wheel can be used to directly contact the workpiece to achieve the purpose of grinding wheel grinding, and can also be used to cooperate with the operation of the sanding belt, so that the sanding belt contacts the workpiece to achieve the purpose of sanding belt grinding; and the several working wheels are all driven by the same motor, which not only saves the traditional synchronous control system, but also effectively ensures that the rotation speed of each working wheel is the same, thereby ensuring the consistency of the grinding effect of each workpiece. If the sanding belt grinding mode is adopted, that is, each workpiece is ground with a sanding belt in the same working state, the consistency of the grinding effect can be further improved.

[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 schematic diagram of the top structure of Example 1 of the utility model.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of embodiment 1 of the utility model.

[0019] Figure 3 It is a schematic cross-sectional structural diagram of the main shaft in Example 1 of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the grinding motor in Example 1 of the utility model.

[0021] Figure 5 It is a structural schematic diagram of the abrasive belt pressure wheel in Example 1 of the utility model.

[0022] Figure 6 It is a structural schematic diagram of the abrasive belt tensioning device in Example 1 of the utility model.

[0023] Figure 7 It is a structural schematic diagram of the utility model embodiment 1 adopting the abrasive belt grinding mode.

[0024] Figure 8 It is a structural schematic diagram of the grinding wheel grinding mode adopted in Example 1 of the utility model.

[0025] Fig. 9 It is a structural schematic diagram of embodiment 1 of the utility model applied to a grinding machine.

[0026] Fig.10 It is a structural schematic diagram of embodiment 2 of the utility model applied to a grinding machine.

[0027] Fig.11 It is a structural schematic diagram of embodiment 3 of the utility model applied to a grinding machine. DETAILED DESCRIPTION

[0028] Example 1, see Figures 1 to 9 The present embodiment provides a multi-grinding head grinding structure, which includes a spindle box 1, a grinding motor 2, a spindle 3, a working wheel 4, a driving wheel 5, an active wheel 6, a driven wheel 7 and a belt tensioning device 8.

[0029] The three main shafts 3 are movably arranged side by side on the main shaft box 1. Specifically, the main shaft box 1 is provided with three sleeve seats 31, and the sleeve seats 31 are provided with tapered roller bearings 32 adapted to the main shafts 3. The number of the tapered roller bearings 32 is preferably two, which are symmetrically arranged at the upper and lower ends of the sleeve seats 31. The tapered roller bearings 32 can effectively bear the radial and axial loads of the main shaft 3 during operation, ensure the smooth rotation of the main shaft 3, and reduce wear and noise.

[0030] The driven wheel 7 and the working wheel 4 are coaxially fixed on the main shaft 3, and a sanding belt pressure wheel 9 is provided at a position corresponding to the position between two adjacent working wheels 4, and a belt pressure wheel 10 is provided at a position corresponding to the side of the driven wheel 7.

[0031] The belt pressure wheel 9 is used to guide the sanding belt 11. The belt pressure wheel 9 includes an adjustment seat 91, an adjustment column 92 and a deep groove ball bearing 93. The adjustment column 92 is vertically arranged on one end of the adjustment seat 91. The other end of the adjustment seat 91 is provided with a long adjustment hole. A plurality of deep groove ball bearings 93 are stacked and sleeved on the upper end of the adjustment column 92. The front and rear positions of the adjustment seat 91 can be adjusted through the long adjustment hole. At the same time, the deep groove ball bearings 93 ensure that the pressure wheel rotates flexibly and reduces the wear of the sanding belt. The belt pressure wheel 10 has the same structure as the belt pressure wheel 9 and is used to guide the transmission belt.

[0032] The belt tensioning device 8 is located at one side of the spindle box 1. Specifically, the belt tensioning device 8 includes a cylinder fixing seat 81, a tensioning cylinder 82, an adjusting wheel 83, a rotating bearing 84, a wheel frame 85, a mounting seat 86 and an adjusting handle 87. The cylinder body of the tensioning cylinder 82 is fixed on the cylinder fixing seat 81, the mounting seat 86 is arranged on the piston rod of the tensioning cylinder 82, the back of the wheel frame 85 is provided with an assembly cavity adapted to the shape of the rotating bearing 84, the rotating bearing 84 is fixed in the assembly cavity, the front of the mounting seat 86 is provided with an installation shaft 88 installed on the inner ring of the rotating bearing 84, two adjusting handles 87 are symmetrically arranged on both sides of the wheel frame 85, and can press on the top surfaces of both sides of the mounting seat 86, and the adjusting wheel 83 is arranged on the wheel frame 85. The position of the adjusting wheel 83 is controlled by the cylinder, so as to adjust the tension of the belt, ensure that the belt is stable and not loose during the grinding process, and improve the grinding quality and efficiency. By adjusting the two adjusting handles 87, the rotation angle of the wheel frame 85 with the mounting shaft 88 as the axis can be controlled, thereby adjusting the deflection angle of the adjusting wheel 83 to further improve the running stability of the sanding belt.

[0033] The grinding motor 2 is arranged on the other side of the spindle box 1, and the driving wheel 5 and the driving wheel 6 are coaxially fixed on the driving shaft of the grinding motor 2; specifically, a flange pipe is provided at one end of the spindle box 1, and a flange shaft 101 is provided at the other end, and a motor mounting plate 102 is provided at the end of the flange shaft 101. The design of the flange pipe and the flange shaft 101 facilitates the connection and fixation of the spindle box 1 with other components, and the grinding motor 2 is installed and positioned through the motor mounting plate 102, and the structure is stable and easy to install and disassemble.

[0034] A boss 103 is provided at one end of the motor mounting plate 102, and an assembly hole matched with the flange shaft 101 is provided on the boss 103. A threaded hole connected to the assembly hole is radially provided on the outer wall of the boss 103, and a locking screw is screwed on the threaded hole. The swing angle of the driving wheel 5 and the active wheel 6 can be adjusted by adjusting the rotation angle of the motor mounting plate 102, which can further improve the operating stability of the grinding belt and the transmission belt.

[0035] See also Figure 7 When the sanding belt is used, the working wheel 4 is preferably a rubber wheel, which cooperates with the sanding belt to improve the stability of the sanding belt. When working, the sanding belt 11 passes through the driving wheel 5, the sanding belt tensioning device 8, the working wheel 4 and the pressure wheel to achieve the purpose of sanding with the sanding belt 11.

[0036] See also Figure 8When the grinding wheel grinding mode is adopted, the working wheel 4 is preferably a grinding wheel, which can be directly used for grinding. During operation, the transmission belt 12 passes through the driving wheel 6, the belt pressure wheel 10 and the driven wheel 7 to achieve the purpose of grinding using the working wheel 4.

[0037] See also Fig. 9 The utility model is installed on the X-axis motion mechanism of the grinding machine.

[0038] Example 2, see Fig.10 The embodiment provides a multi-grinding head grinding structure, which is installed on the X-axis motion mechanism of the grinder. The structure is basically the same as that of the embodiment 1, except that the overall structure adopts a two-station structure design, that is, the number of the spindles 3 is two, and the number of the working wheels 4 is also two.

[0039] Example 3, see Fig.11 , a multi-grinding head grinding structure provided in this embodiment is installed on the X-axis motion mechanism of the grinding machine. Its structure is basically the same as that of embodiment 1, except that the overall structure adopts a four-station structure design, that is, the number of the spindles 3 is four, and the number of the working wheels 4 is also four. In other embodiments, the multi-grinding head grinding structure can also adopt a five-station or more station design, and the number of the spindles 3 and the working wheels 4 corresponds to the number of stations.

[0040] 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-grinding head grinding structure, comprising a spindle box, a grinding motor, a spindle, a working wheel, a driving wheel, a driving wheel, a driven wheel and a sand belt tensioning device, wherein a plurality of spindles are movably arranged side by side on the spindle box, the driven wheel and the working wheel are coaxially fixed on the spindle, a sand belt pressure wheel is provided at a position corresponding to the position between two adjacent working wheels and a belt pressure wheel is provided at a side position corresponding to the driven wheel, the sand belt tensioning device is located on one side of the spindle box, the grinding motor is arranged on the other side of the spindle box, and the driving wheel and the driving wheel are coaxially fixed on the driving shaft of the grinding motor; The grinding belt is wound around the driving wheel, the grinding belt tensioning device, the working wheel and the belt pressure wheel, or the transmission belt is wound around the driving wheel, the belt pressure wheel and the driven wheel.

2. The multi-grinding head grinding structure according to claim 1, characterized in that: The working wheel is a rubber wheel or a grinding wheel.

3. The multi-grinding head grinding structure according to claim 1, characterized in that: The main shaft box is provided with a shaft sleeve seat, and the shaft sleeve seat is provided with a tapered roller bearing matched with the main shaft.

4. The multi-grinding head grinding structure according to claim 3, characterized in that: The number of the tapered roller bearings is two, which are symmetrically arranged at the upper and lower ends of the shaft sleeve seat.

5. The multi-grinding head grinding structure according to claim 1, characterized in that: The belt tensioning device includes a cylinder fixing seat, a tensioning cylinder, an adjusting wheel, a rotating bearing, a wheel frame, a mounting seat and an adjusting handle. The cylinder body of the tensioning cylinder is fixed on the cylinder fixing seat. The mounting seat is arranged on the piston rod of the tensioning cylinder. The back of the wheel frame is provided with an assembly cavity matched with the shape of the rotating bearing. The rotating bearing is fixed in the assembly cavity. The front of the mounting seat is provided with a mounting shaft installed on the inner ring of the rotating bearing. The two adjusting handles are symmetrically arranged on both sides of the wheel frame and can press against the top surfaces on both sides of the mounting seat. The adjusting wheel is arranged on the wheel frame.

6. The multi-grinding head grinding structure according to claim 1, characterized in that: A flange pipe is provided at one end of the spindle box, and a flange shaft is provided at the other end. A motor mounting plate is provided at the end of the flange shaft.

7. The multi-grinding head grinding structure according to claim 6, characterized in that: A boss is provided at one end of the motor mounting plate, an assembly hole matched with the flange shaft is provided on the boss, a threaded hole connected with the assembly hole is radially provided on the outer wall of the boss, and a locking screw is screwed on the threaded hole.

8. The multi-grinding head grinding structure according to any one of claims 1 to 7, characterized in that: The sanding belt pressure wheel includes an adjustment seat, an adjustment column and a deep groove ball bearing. The adjustment column is vertically arranged on one end of the adjustment seat, and a long adjustment hole is arranged on the other end of the adjustment seat. A plurality of deep groove ball bearings are stacked and sleeved on the upper end of the adjustment column.

9. The multi-grinding head grinding structure according to claim 8, characterized in that: The belt pressure wheel has the same structure as the sanding belt pressure wheel.

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