Device for polishing annular groove

Abstract

The present invention belongs to the technical field of inner surface processing, and in particular, relates to a device for polishing an annular groove, including a workpiece clamping and rotating device, a feeding device, the workpiece clamping and rotating device including a spindle box, a three-jaw chuck, a motor, the feeding device including a lead screw I, a slide rail, a slide box, and a workbench, characterized in that a fixed frame is provided on the workbench, a grinding device is connected to the fixed frame, an adjustment device is provided below the workbench, the grinding device includes a clamping handle fixed on the fixed frame, an annular magnetic pole sleeve connected to the clamping handle, an annular magnetic pole arranged in the annular magnetic pole sleeve, a rubber ring arranged in the annular magnetic pole, an empty cylinder arranged in the rubber ring, a packing device arranged in the empty cylinder, the packing includes a piston shaft, a piston and a piston handle, and a cylindrical magnetic pole arranged at the end of the piston. The present invention has a simple structure and an ingenious design, which not only realizes uniform distribution of magnetic abrasives, but also uniform distribution of magnetic field intensity in the grinding area, and a significant grinding effect.

Description

Technical Field

[0001] The invention belongs to the technical field of inner surface processing, and in particular relates to a device for polishing annular grooves. Background Art

[0002] Due to its structural characteristics, the annular groove is generally processed by turning, boring and milling. However, with the continuous development of the machinery manufacturing industry, the requirements for the annular groove are getting higher and higher. Conventional processing can no longer meet the processing requirements, such as burrs, microcracks and other surface damage, which requires grinding to ensure. Grinding can significantly improve the surface quality of the annular groove, extend the service life of the sealing ring installed in the annular groove, and ensure the sealing ability for a long time, which has great development space.

[0003] At present, grinding of annular grooves is usually done by grinding wheels, but due to the high hardness of the grinding wheels, the sand grains are not easy to fall off during processing, and repeated grinding causes burns. In addition, due to the different areas involved in cutting, the degree of wear inside and outside the grinding wheels is different, and the finished parts all have a consistent bell-mouth phenomenon. Summary of the invention

[0004] The purpose of the present invention is to provide a device for polishing annular grooves with a simple structure and ingenious design. The magnetic abrasive of the device is evenly distributed, the grinding effect is significant, and the shortcomings of the prior art of grinding annular grooves can be overcome.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] The device for polishing annular grooves of the present invention comprises a workpiece holding and rotating device and a feeding device. The workpiece holding and rotating device comprises a spindle box, a three-jaw chuck, and a motor driving the three-jaw chuck. The feeding device comprises a lead screw I, a slide rail, a slide box arranged on the lead screw I and the slide rail, and a workbench arranged on the slide box. The device is characterized in that a fixed frame is arranged on the workbench, a grinding device is connected to the fixed frame, and an adjustment device is arranged under the workbench.

[0007] The grinding device includes a clamping handle fixed on the fixing frame, an annular magnetic pole sleeve connected to the clamping handle, an annular magnetic pole arranged in the annular magnetic pole sleeve, a rubber ring arranged in the annular magnetic pole, an empty cylinder arranged in the rubber ring, and a filling device arranged in the empty cylinder. The filling device includes a piston shaft, a piston and a piston handle respectively arranged at both ends of the piston shaft, and a cylindrical magnetic pole arranged at the end of the piston. The piston is slidably connected to the empty cylinder.

[0008] The adjusting device comprises a lead screw II arranged in the slide box and below the workbench, and a nut arranged below the workbench, the nut being threadedly connected to the lead screw II.

[0009] The empty cylinder is made of non-magnetic material.

[0010] The clamping handle is fixed to the fixing frame by tightening a nut.

[0011] Advantages of the present invention:

[0012] The device for polishing annular grooves of the present invention has a simple structure and an ingenious design. It utilizes the magnetic grinding characteristics, and the magnetic brush formed by magnetic abrasive particles is in close contact with the surface of the annular groove. The magnetic field intensity in the grinding area of ​​the device is evenly distributed, the magnetic abrasive is evenly distributed, and the grinding pressure is even, which is not easy to cause surface scratches. After grinding, the abrasive can be effectively recovered and reused, saving costs. It has the characteristics of high processing efficiency and good grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic structural diagram of the grinding device of the present invention.

[0015] Figure 3 For the present invention Figure 2 Stereoscopic view of.

[0016] Figure 4 It is a schematic structural diagram of the packing device of the present invention.

[0017] Figure 5 It is a structural schematic diagram of the adjustment device of the present invention.

[0018] Figure 6 This is a view showing the connection between the grinding device and the fixed frame of the present invention.

[0019] Figure 7 It is a schematic structural diagram of the annular groove workpiece of the present invention. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-7 As shown, the device for polishing annular grooves of the present invention comprises a workpiece clamping and rotating device and a feeding device, wherein the workpiece clamping and rotating device comprises a spindle box 6, a three-jaw chuck 5, and a motor 4 for driving the three-jaw chuck 5, and the feeding device comprises a lead screw Ⅰ8, a slide rail 9, a slide box 7 arranged on the lead screw Ⅰ8 and the slide rail 9, and a workbench 1 arranged on the slide box 7, wherein a fixed frame 2 is arranged on the workbench 1, a grinding device is connected to the fixed frame 2, and an adjustment device is arranged below the workbench 1,

[0022] The grinding device includes a clamping handle 10 fixed on the fixing frame 2, an annular pole sleeve 11 connected to the clamping handle 10, an annular pole 12 arranged in the annular pole sleeve 11, a rubber ring 13 arranged in the annular pole 12, an empty cylinder 14 arranged in the rubber ring 13, and a packing device arranged in the empty cylinder 14, wherein the packing includes a piston shaft 17, a piston 16 and a piston handle 18 respectively arranged at both ends of the piston shaft 17, and a cylindrical pole 15 arranged at the end of the piston 16, wherein the piston 16 is slidably connected to the empty cylinder 14.

[0023] The adjusting device comprises a lead screw II19 arranged in the slide box 7 and below the workbench 1, and a nut arranged below the workbench 1, the nut being threadedly connected to the lead screw II19.

[0024] The empty cylinder 14 is made of non-magnetic material.

[0025] The clamping handle 10 is fixed to the fixing frame 2 by tightening the nut 20 .

[0026] The device for polishing annular grooves of the present invention utilizes magnetic grinding technology to process annular grooves, has reasonable design, and has evenly distributed abrasives, and has a significant grinding effect on difficult-to-polish surfaces such as grooves of annular groove workpieces.

[0027] The workpiece clamping device and feeding device of the present invention are modifications to the existing machine tool. By utilizing the working characteristics of the machine tool itself, the annular groove workpiece 3 to be processed can be ensured to maintain stable rotation during polishing, and can be rotated forward or reversely. The slide box 7 can drive the workbench 1 and the grinding device to move along the lead screw Ⅰ8 and the slide rail 9 in the axial direction of the annular groove workpiece 3, and can ensure that the grinding device polishes different positions of the annular groove workpiece 3. The adjustment device drives the workbench 1 and the grinding device to move through the rotation of the lead screw Ⅱ19, and adjusts the position and distance between the grinding device and the annular groove workpiece 3.

[0028] Before polishing, the abrasive is first adsorbed on the cylindrical magnetic pole 15, and the piston handle 18 is pushed and pulled, so that the piston 16 drives the cylindrical magnetic pole 15 and the abrasive adsorbed on the cylindrical magnetic pole 15 to reciprocate in the empty cylinder 14. Due to the edge effect of the annular magnetic pole 12, the magnetic abrasive will gather at the edge of the annular magnetic pole 12. When the piston 16 reciprocates in the empty cylinder 14, under the joint action of the annular magnetic pole 12 and the cylindrical magnetic pole 15, the magnetic abrasive can be effectively guaranteed to be evenly distributed on the inner wall of the empty cylinder 14. The cylindrical magnetic pole 15 on the piston 16 is relatively short, which not only ensures that the magnetic abrasive is evenly distributed on the inner wall of the empty cylinder 14, but also does not affect the structure of the entire abrasive distribution device due to its oversized size. The rubber ring 13 can both achieve a sealing effect and resist the leakage of magnetic abrasives. The part to be processed of the annular groove workpiece 3 is extended into the empty cylinder 14.

[0029] During grinding, the annular groove workpiece 3 rotates under the drive of the workpiece clamping rotating device, the grinding device and the fixed frame 2 reciprocate with the slide box 7, and the annular magnetic pole 12 provides a magnetic field force to make the magnetic abrasive on the inner wall of the empty cylinder 14 roll and grind, thereby achieving surface polishing of the annular groove workpiece 3.

Claims

1. A device for polishing an annular groove, comprising a workpiece holding and rotating device, a feeding device, wherein the workpiece holding and rotating device comprises a spindle box, a three-jaw chuck, and a motor for driving the three-jaw chuck, the feeding device comprises a lead screw I, a slide rail, a slide box disposed on the lead screw I and the slide rail, and a workbench disposed on the slide box, characterized in that A fixed frame is provided on the workbench, a grinding device is connected to the fixed frame, and an adjustment device is provided under the workbench. The grinding device comprises a clamping handle fixed on the fixing frame, an annular magnetic pole sleeve connected to the clamping handle, an annular magnetic pole arranged in the annular magnetic pole sleeve, a rubber ring arranged in the annular magnetic pole, an empty cylinder arranged in the rubber ring, and a packing device arranged in the empty cylinder, wherein the packing comprises a piston shaft, a piston and a piston handle respectively arranged at both ends of the piston shaft, and a cylindrical magnetic pole arranged at the end of the piston, wherein the piston is slidably connected to the empty cylinder. Before polishing, first adsorb the abrasive on the cylindrical magnetic pole, push and pull the piston handle, so that the piston drives the cylindrical magnetic pole and the abrasive adsorbed on the cylindrical magnetic pole to reciprocate in the empty cylinder. Due to the edge effect of the annular magnetic pole, the magnetic abrasive will gather at the edge of the annular magnetic pole. When the piston reciprocates in the empty cylinder, under the joint action of the annular magnetic pole and the cylindrical magnetic pole, it can effectively ensure that the magnetic abrasive is evenly distributed on the inner wall of the empty cylinder. The cylindrical magnetic pole on the piston is relatively short, which can ensure that the magnetic abrasive is evenly distributed on the inner wall of the empty cylinder. The adjusting device comprises a lead screw II arranged in the slide box and below the workbench, and a nut arranged below the workbench, the nut being threadedly connected to the lead screw II. The empty cylinder is made of non-magnetic material.

2. The device for polishing annular groove according to claim 1, characterized in that The clamping handle is fixed to the fixing frame by tightening a nut.

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