Claw hammer polishing abrasive belt mechanism

Abstract

The utility model relates to a claw hammer polishing abrasive belt mechanism which comprises an abrasive belt and a flexible force controller. During grinding, the surface of a claw hammer makes contact with the front face of the abrasive belt, and the claw hammer is supported on the flexible force controller. The flexible force controller is characterized in that the flexible force controller is a pneumatic flexible clamp and is provided with a plurality of floating needles, needle heads of the floating needles form a supporting face, the supporting face right faces the back face of the abrasive belt, and during grinding, the surface of the claw hammer is supported on the supporting face; the shape of the supporting face is consistent with that of the actual contact face of the claw hammer, the supporting face changes along with the different shapes of the actual contact face of the claw hammer, and when changing, the floating needles float. And hammerhead tolerance absorption compatibility is achieved, surface attaching and automatic following can be carried out, robot automatic grinding is achieved, and the quality effect the same as that of manual grinding is achieved.

Description

Technical Field

[0001] The utility model relates to the processing technology of a claw hammer, in particular to a claw hammer grinding sand belt mechanism. Background Art

[0002] At present, when using a belt sander to grind a claw hammer, the hammer head is basically placed at the tangent position of the sand belt and the rubber wheel, which can ensure good supporting force during the grinding of the claw hammer; however, due to the inevitable dimensional differences caused by the casting thermal expansion and contraction between the surfaces of the claw hammer head, the actual grinding effect cannot be achieved during the precise coordinate position transformation through the robot program. Content of the Utility Model

[0003] The utility model provides a claw hammer grinding sand belt mechanism, which has the function of absorbing and compatible with the hammer head tolerance, and can automatically follow the surface fitting to realize automatic grinding by the robot to achieve the same quality effect as manual grinding.

[0004] The technical solution of the utility model is as follows:

[0005] A claw hammer grinding sand belt mechanism, the mechanism includes a sand belt and a flexible force controller; during grinding, a claw hammer has its surface in contact with the front of the sand belt and is supported on the flexible force controller; the flexible force controller is a pneumatic flexible fixture (such as: Pulijie pneumatic flexible fixture A21G - 3079), which has a number of floating pins, and the needle tips of each floating pin form a support surface, the support surface faces the back of the sand belt, and the surface of the claw hammer is supported on the support surface;

[0006] The shape of the support surface is the same as the shape of the actual contact surface of the claw hammer, and it changes with the shape of the actual contact surface of the claw hammer. When changing, the floating pins of the pneumatic flexible fixture float.

[0007] To further refine the above technical solution, the mechanism further includes a mechanism main body, a main floating force control board, and at least three belt wheels. The main floating force control board is installed inside the mechanism main body, and the front section extends outside the mechanism main body. Each belt wheel is installed on the main floating force control board. Among them, three belt wheels are located at the front section of the main floating force control board and are distributed in a triangle, which are the upper auxiliary wheel, the lower auxiliary wheel, and the guiding wheel. The upper auxiliary wheel is in the upper front position, the lower auxiliary wheel is in the lower rear position, and the guiding wheel is in the middle position. The flexible force controller is installed at the front section of the main floating force control board, between the upper auxiliary wheel and the guiding wheel. The sand belt bypasses and is tensioned on each belt wheel and the guiding roller, and at least one of the belt wheels is a driving wheel. By moving the main floating force control board back and forth, the sand belt is driven to move back and forth.

[0008] To further refine the above technical solution, a vertical support plate is fixedly connected to the front end of the main floating force control plate. An upper front adjustment space plate is installed on the upper part of the vertical support plate, a lower rear adjustment space plate is installed on the lower part, and a mounting plate is installed in the middle. The upper auxiliary wheel is installed at the front end of the upper front adjustment space plate, the lower auxiliary wheel is installed at the rear end of the lower rear adjustment space plate, and the flexible force controller is installed at the front end of the mounting plate. The vertical and front-back positions of the upper auxiliary wheel are adjusted through the upper front adjustment space plate, and the vertical and front-back positions of the lower auxiliary wheel are adjusted through the lower rear adjustment space plate to adapt to different grinding requirements. The change in the vertical and front-back positions of the upper auxiliary wheel causes the angle of the abrasive belt between it and the guide roller to change. By rotating the mounting plate, the support surface is kept facing the back of the abrasive belt exactly.

[0009] To further refine the above technical solution, several groups of fixing holes Ⅰ are arranged vertically on the upper part of the vertical support plate, several groups of fixing holes Ⅲ are arranged front and back on the upper front adjustment space plate, and the vertical support plate and the upper front adjustment space plate are fixed by bolts, and the bolts pass through a group of fixing holes Ⅰ and a group of fixing holes Ⅲ.

[0010] Several groups of fixing holes Ⅱ are arranged vertically on the lower part of the vertical support plate, several groups of fixing holes Ⅳ are arranged front and back on the lower rear adjustment space plate, and the vertical support plate and the lower rear adjustment space plate are fixed by bolts, and the bolts pass through a group of fixing holes Ⅱ and a group of fixing holes Ⅳ.

[0011] The rear end of the mounting plate is fixed to the middle of the vertical support plate by bolts, and the fixing holes are arc-shaped holes.

[0012] To further refine the above technical solution, several annular grooves are distributed on the outer peripheral surface of the guide roller.

[0013] The advantages of the present utility model are reasonable design and simple structure. The surface of the claw hammer is in complete fitting contact with the front of the abrasive belt. The shape of the support surface matches the shape of the actual contact surface of the claw hammer (adjusted by the floating of each floating needle). All contact points (each floating needle) on the contact surface have the same floating force control, and the grinding quality is high. It can solve the problem of tolerance differences that inevitably occur during the forging process of claw hammer heads of the same model. The cooperation of the upper auxiliary wheel, lower auxiliary wheel, and guide wheel distributed in a triangle meets the grinding requirements of the claw hammer while making room to avoid interference between the robot and the abrasive belt mechanism during grinding. Description of the Drawings

[0014] Figure 1 is a three-dimensional structure schematic diagram of the claw hammer grinding abrasive belt mechanism.

[0015] Figure 2 is a partial structure schematic diagram (front view) of the claw hammer grinding abrasive belt mechanism.

[0016] In the figure, there are mechanism main body 1, main floating power control board 2, upper auxiliary wheel 3, lower auxiliary wheel 4, guide wheel 5, pneumatic flexible fixture 6, floating needles 6-1, abrasive belt 7, vertical support plate 8, upper front adjustment space plate 9, lower rear adjustment space plate 10, mounting plate 11, and claw hammer 12. Specific implementation manner

[0017] As Figure 1-2 shown, a claw hammer grinding abrasive belt mechanism, the mechanism includes mechanism main body 1, main floating power control board 2, upper auxiliary wheel 3, lower auxiliary wheel 4, guide wheel 5, pneumatic flexible fixture 6, (other pulleys), and abrasive belt 7;

[0018] The main floating power control board 2 is installed inside the mechanism main body 1, and the front section extends outside the mechanism main body 1. A vertical support plate 8 is fixedly connected to the front end of the main floating power control board 2. The upper part of the vertical support plate 8 is provided with an upper front adjustment space plate 9, the lower part is provided with a lower rear adjustment space plate 10, and the middle part is provided with a mounting plate 11. The upper auxiliary wheel 3 is installed at the front end of the upper front adjustment space plate 9, the lower auxiliary wheel 4 is installed at the rear end of the lower rear adjustment space plate 10, and the pneumatic flexible fixture 6 is installed at the front end of the mounting plate 11 and has a number of floating needles 6-1. The needle tips of the floating needles 6-1 form a support surface, and the support surface faces the back of the abrasive belt 8. The guide wheel 5 is installed on the pneumatic flexible fixture 6 and is located below the pneumatic flexible fixture 6. (Other pulleys are installed on the main floating power control board and are located inside the mechanism main body, and at least one pulley is a driving pulley.) The abrasive belt 8 bypasses and is tensioned on the upper auxiliary wheel 3, lower auxiliary wheel 4, guide wheel 5, (other pulleys). The upper auxiliary wheel 3, lower auxiliary wheel 4, and guide wheel 5 are distributed in a triangle. A number of annular grooves are distributed on the outer peripheral surface of the guide wheel 5;

[0019] A number of groups of fixing holes Ⅰ are provided in the upper part of the vertical support plate 8, and the groups of fixing holes Ⅰ are arranged vertically. A number of groups of fixing holes Ⅲ are provided on the upper front adjustment space plate 9, and the groups of fixing holes Ⅲ are arranged front and rear. The vertical support plate 8 and the upper front adjustment space plate 9 are fixed by bolts, and the bolts pass through a group of fixing holes Ⅰ and a group of fixing holes Ⅲ. A number of groups of fixing holes Ⅱ are provided in the lower part of the vertical support plate 8, and the groups of fixing holes Ⅱ are arranged vertically. A number of groups of fixing holes Ⅳ are provided on the lower rear adjustment space plate 10, and the groups of fixing holes Ⅳ are arranged front and rear. The vertical support plate 8 and the lower rear adjustment space plate 10 are fixed by bolts, and the bolts pass through a group of fixing holes Ⅱ and a group of fixing holes Ⅳ. The rear end of the mounting plate 11 is fixed to the middle part of the vertical support plate 8 by bolts, and the fixing holes are arc-shaped holes;

[0020] During grinding, the claw hammer 12 has its surface in contact with the front of the abrasive belt 7 and is supported on the support surface. The shape of the support surface is the same as the shape of the actual contact surface of the claw hammer 12, and it changes with the shape of the actual contact surface of the claw hammer 12. When changing, the floating needles 6-1 of the pneumatic flexible fixture float.

[0021] The above embodiments are only for illustrating the technical concept and features of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly. It is not intended to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be covered within the protection scope of the utility model.

Claims

1. A grinding belt mechanism for a claw hammer, the mechanism comprising a grinding belt and a flexible force controller; during grinding, a claw hammer has its surface in contact with the front surface of the grinding belt and is supported on the flexible force controller; characterized in that, The flexible force controller is a pneumatic flexible fixture, which has a number of floating pins. The needle tips of the floating pins form a support surface, and the support surface faces the back of the abrasive belt. During grinding, the surface of the claw hammer is supported on the support surface; The shape of the support surface is consistent with the shape of the actual contact surface of the claw hammer, and it changes with the shape of the actual contact surface of the claw hammer. When changing, each floating pin floats.

2. The anvil hammer grinding abrasive belt mechanism according to claim 1, characterized in that, The mechanism further includes a mechanism main body, a main floating force control board, and at least three belt pulleys. The main floating force control board is installed inside the mechanism main body, and the front section extends outside the mechanism main body. Each belt pulley is installed on the main floating force control board. Among them, three belt pulleys are located at the front section of the main floating force control board and are distributed in a triangle, namely the upper auxiliary pulley, the lower auxiliary pulley, and the guide pulley. The upper auxiliary pulley is in the upper front, the lower auxiliary pulley is in the lower rear, and the guide pulley is in the middle. The flexible force controller is installed at the front section of the main floating force control board, between the upper auxiliary pulley and the guide pulley. The abrasive belt bypasses and is tensioned on each belt pulley and the guide roller, and at least one of the belt pulleys is a driving pulley.

3. The abrasive belt mechanism for a claw hammer according to claim 2, characterized in that, A vertical support plate is fixedly connected to the front end of the main floating force control board. The upper part of the vertical support plate is provided with an upper front adjustment space board, the lower part is provided with a lower rear adjustment space board, and the middle part is provided with a mounting board; the upper auxiliary pulley is installed at the front end of the upper front adjustment space board, the lower auxiliary pulley is installed at the rear end of the lower rear adjustment space board, the flexible force controller is installed at the front end of the mounting board, and the guide pulley is installed on the flexible force controller.

4. A claw hammer grinding abrasive belt mechanism according to claim 3, wherein A number of groups of fixing holes Ⅰ are provided in the upper part of the vertical support plate, and the groups of fixing holes Ⅰ are arranged up and down. A number of groups of fixing holes Ⅲ are provided on the upper front adjustment space board, and the groups of fixing holes Ⅲ are arranged front and rear. The vertical support plate and the upper front adjustment space board are fixed by bolts, and the bolts pass through a group of fixing holes Ⅰ and a group of fixing holes Ⅲ; A number of groups of fixing holes Ⅱ are provided in the lower part of the vertical support plate, and the groups of fixing holes Ⅱ are arranged up and down. A number of groups of fixing holes Ⅳ are provided on the lower rear adjustment space board, and the groups of fixing holes Ⅳ are arranged front and rear. The vertical support plate and the lower rear adjustment space board are fixed by bolts, and the bolts pass through a group of fixing holes Ⅱ and a group of fixing holes Ⅳ; The rear end of the mounting board is fixed to the middle of the vertical support plate by bolts, and the fixing holes are arc-shaped holes.

5. The abrasive belt mechanism for a claw hammer according to claim 2, characterized in that, A number of annular grooves are distributed on the outer peripheral surface of the guide pulley.

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