Efficient bar polishing device

Abstract

The application provides a bar efficient polishing device, belonging to the technical field of metal processing. It comprises a rack, a polishing mechanism arranged on the rack and a feeding mechanism arranged on the rack. The polishing mechanism comprises a plurality of polishing assemblies and a speed reducer one. The polishing assembly comprises an installation body one, a polishing cylinder rotatably connected to one end of the installation body one and a driving gear one rotatably connected to the installation body one. The outer wall surface of the polishing cylinder is provided with a driven gear one. The polishing cylinders are coaxially arranged. The output shaft of the speed reducer one is connected to each driving gear one. The feeding mechanism comprises a plurality of parallel feeding assemblies and a speed reducer two. The feeding assembly comprises an installation body two, a feeding cylinder rotatably connected to one end of the installation body two and a driving gear two rotatably connected to the installation body two. The outer wall surface of the feeding cylinder is provided with a driven gear two. The output shaft of the speed reducer two is connected to each driving gear two. A sliding block is slidingly connected to the rack. The application has the advantages of high polishing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of machining technology and relates to a high-efficiency grinding device for bar stock. Background Technology

[0002] When grinding shafts, straight rods, and bar-shaped workpieces, which require rotation and axial movement, existing technologies necessitate clamping the workpiece to bring it into contact with the grinding medium while it is rotating. The workpiece is then controlled to move along the axis to switch grinding positions. These existing technologies have the following drawbacks for grinding these types of workpieces: 1. The workpiece assembly and disassembly are cumbersome. Even in rough grinding, the workpiece needs to be assembled and disassembled on the fixture within a single grinding cycle. This assembly and disassembly consumes a significant portion of the grinding process, drastically reducing grinding efficiency; 2. For workpieces of different sizes, different... The use of the same type of fixtures and grinding parts results in a large number of accessories for grinding equipment. Grinding different workpieces requires changing the accessories, which leads to unsatisfactory processing efficiency. 3. Since the machining surface of this type of workpiece is a circumferential surface, and the grinding surface of the grinding parts is generally flat, the grinding surface makes line contact with the workpiece, and most of the grinding surface of the grinding parts cannot be utilized, resulting in a waste of grinding media. Using grinding parts with curved grinding surfaces not only causes high grinding resistance and serious heat generation, but also leads to a decrease in grinding quality due to uneven wear. Different types of grinding parts are required for different specifications of workpieces, which is also a drawback of the existing technology. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by providing a high-efficiency grinding device for bar stock. The technical problem to be solved by this invention is how to eliminate the need for disassembly and assembly of workpieces, thereby improving grinding efficiency.

[0004] The objective of this invention can be achieved through the following technical solution: A high-efficiency grinding device for bar stock, characterized in that it includes a frame, a grinding mechanism disposed on the frame, and a feeding mechanism disposed on the frame. The grinding mechanism includes a plurality of grinding components and a reduction motor. Each grinding component includes a mounting body, a grinding cylinder rotatably connected to one end of the mounting body, and a drive gear rotatably connected to the mounting body. The other end of each mounting body is fixedly connected to the frame. The outer wall surface of the grinding cylinder has a driven gear that meshes with the drive gear. Each grinding cylinder is coaxially arranged, and each drive gear is coaxially arranged. The output shaft of the reduction motor is connected to each drive gear.

[0005] The feeding mechanism includes several parallel feeding components and a second reduction motor. Each feeding component includes a second mounting body, a feeding cylinder rotatably connected to one end of the second mounting body, and a second drive gear rotatably connected to the second mounting body. The outer wall of the feeding cylinder has a second driven gear that meshes with the second drive gear. Each feeding cylinder is coaxially arranged, and each second drive gear is coaxially arranged. The output shaft of the second reduction motor is connected to each second drive gear. The other end of each second mounting body is fixed to a slider. The slider is slidably connected to the frame. A linear motor is mounted on the frame, and the telescopic rod of the linear motor is fixedly connected to the slider.

[0006] The axis of the feed cylinder is always parallel to the axis of the grinding cylinder, and a second mounting body is provided between adjacent mounting bodies one;

[0007] The inner wall of the grinding cylinder contains grinding media, and the inner wall of the feeding cylinder is provided with spiral feeding ribs.

[0008] Furthermore, the frame is equipped with two position sensors located on the outer sides of the two grinding cylinders at their ends.

[0009] Furthermore, the outer wall of the grinding cylinder is provided with two bearings, the mounting body is connected to the outer wall of the grinding cylinder through the two bearings, and the driven gear is disposed on the outer wall of the grinding cylinder between the two bearings.

[0010] Furthermore, the outer wall of the feed cylinder is provided with two bearings, and the mounting body is connected to the outer wall of the feed cylinder through the two bearings. The driven gear is disposed on the outer wall of the feed cylinder between the two bearings.

[0011] Furthermore, a cylindrical grinding tube is detachably connected to the inner wall of the grinding cylinder, and the grinding medium is located on the inner wall of the grinding tube.

[0012] Furthermore, a cylindrical feeding tube is detachably connected to the inner wall of the feeding cylinder, and the feeding rib is located on the inner wall of the feeding tube.

[0013] Furthermore, the inner diameter of the grinding cylinder is smaller than the inner diameter of the feed cylinder.

[0014] This ensures smooth feeding and unloading processes, especially when inserting bar stock, preventing the bar stock end from pressing against the end face of the feed cylinder and making insertion difficult.

[0015] The working principle of this polishing device is as follows:

[0016] Feeding: Control the linear motor to make the grinding cylinder and the feed cylinder coaxial, insert the bar stock from one end of the grinding cylinder, so that the front end of the workpiece extends into the grinding cylinder at the other end;

[0017] Grinding process: Control the linear motor to move the slider away from the grinding cylinder, that is, move the feed cylinder away from the grinding cylinder. The workpiece smaller than the inner diameter of the grinding cylinder is clamped by the grinding cylinder and the feed cylinder. At the same time, the first and second reduction motors are turned on. Under the action of the spiral feed ribs, the workpiece moves along the axis of the workpiece while being clamped. The direction of the second reduction motor can be controlled to make the workpiece reciprocate while being clamped. With the help of two position sensors, the workpiece can reciprocate multiple times without leaving the end of the grinding cylinder. After grinding, the workpiece is unloaded from the outside of the grinding cylinder.

[0018] The specific method for controlling the reciprocating motion of the workpiece can be as follows: the length of the workpiece is greater than the distance between the two end grinding cylinders. When the rear end of the workpiece is about to leave the grinding cylinder at the feed end, the position sensor at the feed end acquires the position information of the workpiece and sends a reverse signal to the second geared motor, thereby causing the workpiece to move in the reverse direction. During the process of the workpiece moving from the discharge end to the feed end, when the front end of the workpiece is about to leave the grinding cylinder at the discharge end, the position sensor at the discharge end acquires the position information of the workpiece and sends a reverse signal to the second geared motor again, causing the workpiece to reverse again. After controlling this multiple times, when the position sensor at the feed end no longer sends a position signal to the second geared motor, the workpiece can be unloaded from the discharge end. The frequency of the signals sent by the two position sensors to the second geared motor can be adjusted through a predetermined program to regulate the degree of grinding of the workpiece.

[0019] During the grinding process, the linear motor maintains a certain pulling force on the slider, which enables the grinding cylinder and the feed cylinder to effectively clamp the workpiece and also compensate for the wear of the grinding media and the feed ribs.

[0020] The feeding ribs not only drive the workpiece to move along the axis, but also create relative motion between the workpiece and the inner wall of the grinding cylinder, resulting in uniform grinding. The rotational speed of the grinding cylinder differs from that of the feeding cylinder, creating a significant difference in linear velocity between the workpiece and the grinding cylinder.

[0021] This grinding device not only eliminates the need for disassembling and assembling workpieces, but also adapts to grinding bar stock of different diameters within a certain range. It also ensures uniform wear of the grinding media on the inner wall of the grinding cylinder, making full use of the grinding media and significantly improving grinding efficiency during the rough grinding process. It can increase the gap between the grinding cylinder and the feed cylinder to facilitate heat dissipation and chip removal. In order to provide better frictional resistance between the feed ribs and the workpiece, the feed ribs can be made of polymer materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this polishing device.

[0023] Figure 2 This is a three-dimensional structural diagram of the grinding component and the feeding component.

[0024] Figure 3 This is a schematic diagram showing the positions of the grinding cylinder and the feed cylinder during the feeding state.

[0025] Figure 4 This is a schematic diagram showing the positions of the grinding cylinder and the feed cylinder during the grinding process.

[0026] Figure 5 This is a cross-sectional view of the grinding cylinder.

[0027] Figure 6 This is a cross-sectional view of the feed cylinder.

[0028] In the diagram, 1. Frame; 2. Grinding assembly; 21. Mounting body one; 22. Grinding cylinder; 221. Bearing one; 222. Grinding tube; 23. Drive gear one; 24. Driven gear one; 3. Gear motor one; 4. Feeding assembly; 5. Gear motor two; 41. Mounting body two; 42. Feeding cylinder; 421. Bearing two; 422. Feeding tube; 43. Drive gear two; 44. Driven gear two; 45. Slider; 46. Linear motor; 47. Feeding rib; 6. Position sensor; a. Bar stock workpiece. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figures 1-6 As shown, the high-efficiency grinding device for bar stock includes a frame 1, a grinding mechanism mounted on the frame 1, and a feeding mechanism mounted on the frame 1. The grinding mechanism includes several grinding components 2 and a geared motor 3. Each grinding component 2 includes a mounting body 21, a grinding cylinder 22 rotatably connected to one end of the mounting body 21, and a drive gear 23 rotatably connected to the mounting body 21. The other end of each mounting body 21 is fixedly connected to the frame 1. The outer wall of the grinding cylinder 22 has a driven gear 24 that meshes with the drive gear 23. Each grinding cylinder 22 is coaxially arranged, and each drive gear 23 is coaxially arranged. The output shaft of the geared motor 3 is connected to each drive gear 23.

[0031] The feeding mechanism includes several parallel feeding components 4 and a second reduction motor 5. The feeding component 4 includes a second mounting body 41, a feeding cylinder 42 rotatably connected to one end of the second mounting body 41, and a second drive gear 43 rotatably connected to the second mounting body 41. The outer wall of the feeding cylinder 42 has a driven gear 44 that meshes with the second drive gear 43. Each feeding cylinder 42 is coaxially arranged, and each second drive gear 43 is coaxially arranged. The output shaft of the second reduction motor 5 is connected to each second drive gear 43. The other end of each second mounting body 41 is fixed to a slider 45. The slider 45 is slidably connected to the frame 1. A linear motor 46 is arranged on the frame 1. The extension rod of the linear motor 46 is fixedly connected to the slider 45.

[0032] The axis of the feed cylinder 42 is always parallel to the axis of the grinding cylinder 22, and a second mounting body 41 is provided between adjacent mounting bodies 1 21;

[0033] The inner wall of the grinding cylinder 22 contains grinding media, and the inner wall of the feed cylinder 42 is provided with spiral feed ribs 47.

[0034] The frame 1 is equipped with two position sensors 6 located on the outer sides of the two grinding cylinders 22 at their ends.

[0035] The outer wall of the grinding cylinder 22 is provided with two bearings 221. The mounting body 21 is connected to the outer wall of the grinding cylinder 22 through the two bearings 221. The driven gear 24 is provided on the outer wall of the grinding cylinder 22 between the two bearings 221. The inner wall of the grinding cylinder 22 is detachably connected with a cylindrical grinding tube 222, and the grinding medium is located on the inner wall of the grinding tube 222.

[0036] Two bearings 421 are provided on the outer wall of the feed cylinder 42. The mounting body 41 is connected to the outer wall of the feed cylinder 42 through the two bearings 421. The driven gear 44 is provided on the outer wall of the feed cylinder 42 between the two bearings 421. Furthermore, a cylindrical feed tube 422 is detachably connected to the inner wall of the feed cylinder 42. The feed rib 47 is located on the inner wall of the feed tube 422.

[0037] The inner diameter of the grinding cylinder 22 is slightly smaller than that of the feeding cylinder 42, which makes the feeding and unloading process smooth. Especially when inserting bar stock, it will not cause the end of the bar stock to press against the end face of the feeding cylinder 42 and make it difficult to insert.

[0038] The working principle of this polishing device is as follows:

[0039] Feeding: Control the linear motor 46 to make the grinding cylinder 22 and the feeding cylinder 42 coaxial, insert the bar stock from the grinding cylinder 22 at one end, so that the front end of the workpiece extends into the grinding cylinder 22 at the other end;

[0040] Grinding process: Control the linear motor 46 to move the slider 45 away from the grinding cylinder 22, that is, the feed cylinder 42 away from the grinding cylinder 22. The workpiece smaller than the inner diameter of the grinding cylinder 22 is clamped by the grinding cylinder 22 and the feed cylinder 42. At the same time, the first reduction motor 3 and the second reduction motor 5 are turned on. Under the action of the spiral feed rib 47, the workpiece moves along the axis of the workpiece while being clamped. The direction of the second reduction motor 5 can be controlled to make the workpiece reciprocate while being clamped. With the help of two position sensors 6, the workpiece reciprocates multiple times without leaving the end of the end grinding cylinder 22. After grinding is completed, the workpiece is unloaded from the outside of the grinding cylinder 22.

[0041] The specific method for controlling the reciprocating motion of the workpiece can be as follows: when the length of the workpiece is greater than the distance between the two end grinding cylinders 22, and the rear end of the workpiece is about to leave the grinding cylinder 22 at the feed end, the position sensor 6 at the feed end acquires the position information of the workpiece and sends a reverse signal to the second geared motor 5, thereby causing the workpiece to move in the reverse direction. During the process of the workpiece moving from the discharge end to the feed end, when the front end of the workpiece is about to leave the grinding cylinder 22 at the discharge end, the position sensor 6 at the discharge end acquires the position information of the workpiece and sends a reverse signal to the second geared motor 5 again, causing the workpiece to reverse again. After controlling this multiple times, when the position sensor 6 at the feed end no longer sends a position signal to the second geared motor 5, the workpiece can be unloaded from the discharge end. The frequency of the signals sent by the two position sensors 6 to the second geared motor 5 can be adjusted through a predetermined program to adjust the degree of grinding of the workpiece.

[0042] During the grinding process, the linear motor 46 maintains a certain pulling force on the slider 45, so that the grinding cylinder 22 and the feed cylinder 42 can effectively clamp the workpiece, and also compensate for the wear of the grinding media and the feed rib 47.

[0043] The feeding rib 47 not only drives the workpiece to move along the axis, but also creates relative motion between the workpiece and the inner wall of the grinding cylinder 22, resulting in uniform grinding. The rotational speed of the grinding cylinder 22 is different from that of the feeding cylinder 42, so that there is a significant difference in linear velocity between the workpiece and the grinding cylinder 22.

[0044] This grinding device not only eliminates the need for disassembling and assembling workpieces, but also adapts to grinding bar workpieces a of different diameters within a certain range. It also ensures uniform wear of the grinding media on the inner wall of the grinding cylinder 22, making full use of the grinding media. In the rough grinding process of the workpiece, it can greatly improve the grinding efficiency.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency grinding device for bar stock, characterized in that, The machine includes a frame (1), a grinding mechanism mounted on the frame (1), and a feeding mechanism mounted on the frame (1). The grinding mechanism includes several grinding components (2) and a geared motor (3). The grinding component (2) includes a mounting body (21), a grinding cylinder (22) rotatably connected to one end of the mounting body (21), and a drive gear (23) rotatably connected to the mounting body (21). The other end of each mounting body (21) is fixedly connected to the frame (1). The outer wall of the grinding cylinder (22) has a driven gear (24) meshing with the drive gear (23). Each grinding cylinder (22) is coaxially arranged, and each drive gear (23) is coaxially arranged. The output shaft of the geared motor (3) is connected to each drive gear (23). The feeding mechanism includes several parallel feeding components (4) and a second reduction motor (5). The feeding component (4) includes a second mounting body (41), a feeding cylinder (42) rotatably connected to one end of the second mounting body (41), and a second drive gear (43) rotatably connected to the second mounting body (41). The outer wall of the feeding cylinder (42) has a driven gear (44) meshing with the second drive gear (43). Each feeding cylinder (42) is coaxially arranged, and each second drive gear (43) is coaxially arranged. The output shaft of the second reduction motor (5) is connected to each second drive gear (43). The other end of each second mounting body (41) is fixed on a slider (45). The slider (45) is slidably connected to the frame (1). A linear motor (46) is provided on the frame (1). The telescopic rod of the linear motor (46) is fixedly connected to the slider (45). The axis of the feed cylinder (42) is always parallel to the axis of the grinding cylinder (22), and a second mounting body (41) is provided between adjacent mounting bodies one (21); The inner wall of the grinding cylinder (22) has a grinding medium, and the inner wall of the feeding cylinder (42) is provided with a spiral feeding rib (47).

2. The high-efficiency grinding device for bar stock according to claim 1, characterized in that, The frame (1) is equipped with two position sensors (6) on the outer sides of two grinding cylinders (22) located at their ends.

3. The high-efficiency grinding device for bar stock according to claim 1 or 2, characterized in that, The outer wall of the grinding cylinder (22) is provided with two bearings (221), the mounting body (21) is connected to the outer wall of the grinding cylinder (22) through the two bearings (221), and the driven gear (24) is provided on the outer wall of the grinding cylinder (22) between the two bearings (221).

4. The high-efficiency grinding device for bar stock according to claim 1 or 2, characterized in that, The outer wall of the feed cylinder (42) is provided with two bearings (421), the mounting body (41) is connected to the outer wall of the feed cylinder (42) through the two bearings (421), and the driven gear (44) is provided on the outer wall of the feed cylinder (42) between the two bearings (421).

5. The high-efficiency grinding device for bar stock according to claim 3, characterized in that, The inner wall of the grinding cylinder (22) is detachably connected to a cylindrical grinding tube (222), and the grinding medium is located on the inner wall of the grinding tube (222).

6. The high-efficiency grinding device for bar stock according to claim 4, characterized in that, The inner wall of the feeding cylinder (42) is detachably connected to a cylindrical feeding tube (422), and the feeding rib (47) is located on the inner wall of the feeding tube (422).

7. The high-efficiency grinding device for bar stock according to claim 1 or 2, characterized in that, The inner diameter of the grinding cylinder (22) is smaller than the inner diameter of the feed cylinder (42).

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