A polishing head for polishing an internal bore

Abstract

The utility model relates to the field of polishing tool discloses a grinding head for polishing of inner hole, including polishing machine shell main part, frame, the frame sliding connection is in the side inner wall of polishing machine shell main part, the bottom inner wall of frame is fixedly connected with driver, the output of driver is fixedly connected with polishing head through the shaft coupling, be provided with dustproof mechanism on the frame, be provided with deployment mechanism on the dustproof mechanism, the dustproof mechanism includes hose, the hose fixedly connected in the bottom inner wall of frame, the top outer wall of frame is opened with the water storage groove, the side inner wall of water storage groove is opened with the butt joint groove. In the utility model, through setting up by water storage groove, micro - grade water pump, hose and annular spray head constitute the dustproof structure, cooperate micro - grade water pump drive water flow through the hose delivery to annular spray head, make annular spray head can form annular water mist to polishing head polishing area, can effectively restrain the dust diffusion produced in the polishing process.

Description

Technical Field

[0001] This utility model relates to the field of polishing tools, and more particularly to a grinding head for polishing internal holes. Background Technology

[0002] Internal polishing grinding heads are core tools used for polishing the inner surface of workpieces in precision machining. They can be classified into various types according to their materials, such as diamond, CBN, corundum, and rubber, to suit different hardness processing materials. Diamond grinding heads are suitable for hard and brittle materials such as cemented carbide and ceramics. CBN grinding heads are mainly used for processing high-hardness ferrous metals. Corundum grinding heads are cost-effective and suitable for ordinary metals. Rubber grinding heads are suitable for fine polishing.

[0003] Polishing is achieved through the relative movement between the grinding head and the inner surface of the workpiece, using the micro-cutting or grinding action of the abrasive. The specific mechanisms of different types of grinding heads vary slightly: mainstream abrasive flow grinding heads rely on a mixture of viscoelastic fluid abrasive polymer carrier and abrasive grains, which flows back and forth in the inner hole under the drive of the equipment. The viscosity of the carrier ensures that the abrasive grains are evenly attached to the inner hole surface, while the elasticity avoids excessive damage to the workpiece. The abrasive grains complete micro-cutting by relative movement with the inner hole surface, removing surface defects.

[0004] The above-mentioned device has the following defects: some grinding heads generate a large amount of grinding dust during use, especially metal abrasive grinding heads. The dust can easily pollute the environment and endanger the health of operators. Therefore, a grinding head for internal hole polishing is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a grinding head for internal hole polishing, which aims to improve the problem that some grinding heads in the prior art generate a large amount of grinding dust during use, especially metal abrasive grinding heads, and the dust can easily pollute the environment and endanger the health of operators.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grinding head for internal hole polishing, comprising a polishing housing body and a frame, the frame being slidably connected to the inner side wall of the polishing housing body, a driver being fixedly connected to the inner bottom wall of the frame, the output end of the driver being fixedly connected to a grinding head via a coupling, a dustproof mechanism being provided on the frame, an adjustment mechanism being provided on the dustproof mechanism, the dustproof mechanism including a hose, the hose being fixedly connected to the inner bottom wall of the frame, a water storage tank being provided on the outer top wall of the frame, a docking groove being provided on the inner side wall of the water storage tank, a piston cap being threadedly connected to the inner side wall of the docking groove, a micro-water pump being fixedly connected to the inner bottom wall of the water storage tank, an annular spray head being fixedly connected to the bottom end of the hose, a threaded hole being provided on the inner top wall of the frame, a threaded post being threadedly connected to the inner side wall of the threaded hole, and an adjustment disc being fixedly connected to the top end of the threaded post.

[0007] As a further description of the above technical solution: the dispensing mechanism includes a threaded cover, which is threadedly connected to the top inner wall of the polishing machine housing body. Adjusting plates are slidably connected to the inner walls of the left and right sides of the adjusting plate. A plug rod is fixedly connected to the bottom outer wall of the adjusting plate. A compression spring is fixedly connected to the top outer wall of the adjusting plate. A directional mark is provided on the top outer wall of the threaded cover.

[0008] As a further description of the above technical solution: the outer diameter of the piston cover is adapted to the inner diameter of the water storage tank, and the top end of the hose is fixedly connected to the bottom outer wall of the micro water pump.

[0009] As a further description of the above technical solution: the annular spray head is fixedly connected to the bottom outer wall of the frame, and a frosted sleeve is fixedly connected to the side outer wall of the adjustment disc.

[0010] As a further description of the above technical solution: the hose penetrates the bottom outer wall of the frame, and the spraying direction of the annular spray head is adapted to the grinding position of the grinding head.

[0011] As a further description of the above technical solution: silicone pads are fixedly connected to the outer walls of the top and bottom sides of the adjustment plate, and the insertion rod is snapped into the top inner wall of the threaded cover.

[0012] As a further description of the above technical solution: the top outer wall of the pointing mark is coated with a display coating, and the end of the compression spring away from the adjustment plate is fixedly connected to the top inner wall of the adjustment disc.

[0013] This utility model has the following beneficial effects: 1. In this utility model, a dustproof structure consisting of a water storage tank, a micro-pump, a hose, and an annular spray head is set up. The micro-pump drives water to flow through the hose and deliver it to the annular spray head, so that the annular spray head can form annular water mist on the grinding area of ​​the grinding head. This can effectively suppress the spread of dust generated during the grinding process, which not only avoids the pollution of the working environment by dust, but also reduces the amount of dust inhaled by the operators, protecting the health of the operators. At the same time, the structural design of the annular spray head can ensure that the water mist fully covers the grinding area, improving the stability of the dustproof effect.

[0014] 2. In this utility model, the combination of the threaded column and threaded hole with the adjusting plate enables the frame to be telescopically adjusted relative to the main body of the polishing machine, adapting to the polishing needs of inner holes of different depths and significantly improving the applicability of the grinding head. At the same time, the limiting structure composed of the adjusting plate, the insert rod and the compression spring can quickly limit and fix the adjusted adjusting plate and the threaded column, avoiding positional displacement caused by vibration during the polishing process and ensuring polishing accuracy. In addition, the threaded cover and the directional mark with the display coating make it convenient for operators to accurately disassemble the threaded cover to pull out the dustproof mechanism component for maintenance and replacement, reducing the difficulty of equipment maintenance and improving the overall ease of use. Attached Figure Description

[0015] Figure 1 This is a schematic front view of the grinding head for internal hole polishing proposed in this utility model; Figure 2 This is a split diagram of a grinding head for internal hole polishing proposed in this utility model; Figure 3 This is a schematic diagram of a dustproof mechanism for a grinding head used for internal hole polishing according to the present invention. Figure 4 This is a schematic diagram of the adjustment mechanism of a grinding head for internal hole polishing proposed in this utility model.

[0016] Legend: 1. Polishing machine housing; 2. Frame; 3. Driver; 4. Grinding head; 5. Dustproof mechanism; 51. Hose; 52. Water tank; 53. Connecting groove; 54. Piston cover; 55. Micro water pump; 56. Annular spray head; 57. Threaded hole; 58. Threaded post; 59. Adjusting plate; 6. Mixing mechanism; 61. Threaded cover; 62. Adjusting plate; 63. Insert rod; 64. Compression spring; 65. Pointer mark. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-3This utility model provides an embodiment of a grinding head for internal hole polishing, comprising a polishing housing body 1 and a frame 2. The frame 2 is slidably connected to the inner side wall of the polishing housing body 1. A driver 3 is fixedly connected to the bottom inner wall of the frame 2. The output end of the driver 3 is fixedly connected to a grinding head 4 via a coupling. A dustproof mechanism 5 is provided on the frame 2, and a dispensing mechanism 6 is provided on the dustproof mechanism 5. The dustproof mechanism 5 includes a hose 51, which is used to transport water from a water storage tank 52 to an annular spray head 56. The hose 51 is flexible enough to adapt to the movement of the frame 2. The hose 51 is fixedly connected to the bottom inner wall of the frame 2, and a water storage tank 52 is provided on the top outer wall of the frame 2. The inner side wall of the water storage tank 52 is provided with a docking groove 53, and a piston cover 54 is threadedly connected to the inner side wall of the docking groove 53. The piston cover 54 has good sealing performance and can prevent water leakage in the water storage tank 52. At the same time, it is easy to open for water addition or cleaning. A micro water pump 55 is fixedly connected to the inner bottom wall of the water storage tank 52. An annular spray head 56 is fixedly connected to the bottom end of the hose 51. The annular spray head 56 can form an annular water mist around the grinding head 4, which can fully cover the grinding area and improve the dust prevention effect. A threaded hole 57 is provided on the inner top wall of the frame 2. A threaded post 58 is threadedly connected to the inner side wall of the threaded hole 57. An adjustment plate 59 is fixedly connected to the top of the threaded post 58.

[0019] Reference Figures 2-4 The outer diameter of the piston cover 54 is matched with the inner diameter of the water storage tank 52. The top end of the hose 51 is fixedly connected to the bottom outer wall of the micro water pump 55. The annular spray head 56 is fixedly connected to the bottom outer wall of the frame 2. A frosted sleeve is fixedly connected to the side outer wall of the adjustment plate 59. The frosted sleeve increases the friction between the operator's hand and the adjustment plate 59 to prevent slippage during adjustment. The hose 51 passes through the bottom outer wall of the frame 2. The spray direction of the annular spray head 56 is matched with the grinding position of the grinding head 4.

[0020] Reference Figures 3-4The mixing mechanism 6 includes a threaded cover 61, which is threadedly connected to the top inner wall of the polishing machine housing 1. Adjustment plates 62 are slidably connected to the inner walls of the left and right sides of the adjustment plate 59. A plug rod 63 is fixedly connected to the bottom outer wall of the adjustment plate 62. The plug rod 63 fixes the adjustment plate 59 to the threaded cover 61 by snapping, thereby limiting the threaded post 58 and preventing rotation during polishing. A compression spring 64 is fixedly connected to the top outer wall of the adjustment plate 62. A directional mark 65 is provided on the top outer wall of the threaded cover 61. The directional mark 65 provides a visual reference for the operator to rotate the threaded cover 61. Silicone pads are fixedly connected to the top and bottom outer walls of the adjustment plate 62. The silicone pads reduce friction and wear when the adjustment plate 62 slides. The plug rod 63 is snapped into the top inner wall of the threaded cover 61. A display coating is applied to the top outer wall of the directional mark 65. The display coating improves the clarity of the directional mark 65, making it easy for the operator to observe clearly under different lighting conditions. The end of the compression spring 64 away from the adjustment plate 62 is fixedly connected to the top inner wall of the adjustment plate 59.

[0021] Working principle: When the grinding head 4 is grinding, the micro water pump 55 is turned on to spray water from the water tank 52 through the hose 51 to the annular spray head 56, so that the annular spray head 56 forms a water mist around the grinding head 4, reducing dust and preventing it from floating around. At the same time, when some internal control holes are deep, the adjusting plate 59 is rotated to rotate the threaded column 58. The rotation of the threaded column 58 drives the threaded hole 57 to move downward. The movement of the threaded hole 57 causes the frame 2 to extend from the polishing machine housing 1, extending the grinding head 4 to reach deeper into the inner hole for polishing. At the same time, by locking the plug 63 to the top of the threaded cover 61, the adjusting plate 59 and the threaded column 58 are conveniently limited to prevent rotation during grinding. At the same time, by observing the indicator mark 65 and rotating the threaded cover 61, the internal dustproof mechanism 5 component can be pulled out from the polishing machine housing 1 for easy maintenance and replacement.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grinding head for internal hole polishing, comprising a polishing housing body (1) and a frame (2), characterized in that: The frame (2) is slidably connected to the inner side wall of the polishing machine housing body (1). The bottom inner wall of the frame (2) is fixedly connected to a driver (3). The output end of the driver (3) is fixedly connected to a grinding head (4) through a coupling. The frame (2) is provided with a dustproof mechanism (5). The dustproof mechanism (5) is provided with a dispensing mechanism (6). The dustproof mechanism (5) includes a hose (51), which is fixedly connected to the bottom inner wall of the frame (2). A water storage tank (52) is provided on the top outer wall of the frame (2). A docking groove (53) is provided on the side inner wall of the water storage tank (52). A piston cover (54) is threadedly connected to the side inner wall of the docking groove (53). A micro water pump (55) is fixedly connected to the bottom inner wall of the water storage tank (52). An annular spray head (56) is fixedly connected to the bottom end of the hose (51). A threaded hole (57) is provided on the top inner wall of the frame (2). A threaded post (58) is threadedly connected to the side inner wall of the threaded hole (57). An adjusting plate (59) is fixedly connected to the top end of the threaded post (58).

2. The grinding head for internal hole polishing according to claim 1, characterized in that: The mixing mechanism (6) includes a threaded cover (61), which is threaded to the top inner wall of the polishing machine housing body (1). Adjusting plates (62) are slidably connected to the inner walls of the left and right sides of the adjusting plate (59). A plug rod (63) is fixedly connected to the bottom outer wall of the adjusting plate (62). A compression spring (64) is fixedly connected to the top outer wall of the adjusting plate (62). A directional mark (65) is opened on the top outer wall of the threaded cover (61).

3. The grinding head for internal hole polishing according to claim 1, characterized in that: The outer diameter of the piston cover (54) is adapted to the inner diameter of the water storage tank (52), and the top end of the hose (51) is fixedly connected to the bottom outer wall of the micro water pump (55).

4. A grinding head for internal hole polishing according to claim 1, characterized in that: The annular spray head (56) is fixedly connected to the bottom outer wall of the frame (2), and the side outer wall of the adjustment disc (59) is fixedly connected to a frosted sleeve.

5. A grinding head for internal hole polishing according to claim 1, characterized in that: The hose (51) penetrates the bottom outer wall of the frame (2), and the spray direction of the annular spray head (56) is adapted to the grinding position of the grinding head (4).

6. A grinding head for internal hole polishing according to claim 2, characterized in that: The top and bottom sides of the adjustment plate (62) are fixedly connected with silicone pads, and the plug rod (63) is snapped into the top inner wall of the threaded cover (61).

7. A grinding head for internal hole polishing according to claim 2, characterized in that: The top outer wall of the directional marker (65) is coated with a display coating, and the end of the compression spring (64) away from the adjustment plate (62) is fixedly connected to the top inner wall of the adjustment disc (59).

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