A centerless grinder

Abstract

The utility model discloses a centerless grinding machine belongs to centerless grinding machine technical field, it includes bed body, the top fixedly connected with control box of bed body, one side fixedly connected with servo motor of control box, set up the protection cover on two mounting brackets, can in the grinding process, play the protection function, avoid the high -speed rotation's abrasive wheel to the operator to cause the harm, can also play the prevention and treatment of the chip in the grinding process and fly around, avoid the chip to the operator to cause the harm, also protected the environment, set up the spring between mounting bracket and protection cover, can always close when grinding to different size workpiece, ensure the protection effect, set up the placement rod by servo motor, gear and rack drive on control box, realized the function of automatic feeding and discharging, need not manual feeding and discharging, not only reduced the manual cost, reduced the labor intensity of operator, and simple and reliable structure, high integration.

Description

Technical Field

[0001] This utility model belongs to the field of centerless grinding technology, specifically a centerless grinding machine. Background Technology

[0002] A centerless grinder is a grinding machine that grinds without requiring the workpiece's axis to be positioned; instead, it uses a grinding wheel for grinding. On a centerless grinder, the workpiece is not centered or supported but is placed between the grinding wheel and a guide wheel. The rotating surface of the workpiece is ground using centerless grinding. The working principle of a centerless grinder is to utilize the geometric error of the grinding wheel (grinding wheel) during machining on the workpiece surface to control the machining center line, thereby achieving a precise machining effect. Specifically, the grinding wheel rotates at high speed for grinding, while the guide wheel rotates at a slower speed in the same direction, thus driving the workpiece to rotate and perform circumferential feed.

[0003] The existing technology still has the following shortcomings:

[0004] 1. Existing centerless grinders lack safety protection features during use. During grinding operations, the high-speed rotating grinding wheel poses a safety hazard to the operator. At the same time, the flying debris during grinding also poses a safety hazard to the operator.

[0005] 2. Existing centerless grinders still lack automatic loading and unloading functions during use. In the current technology, loading and unloading of centerless grinders mainly rely on manual labor. Even centerless grinders with automatic loading and unloading functions have relatively poor integration of loading and unloading structures and relatively complex structures. Utility Model Content

[0006] To overcome the above-mentioned defects, this utility model provides a centerless grinding machine, which solves the problems of lacking safety protection functions and lacking automatic loading and unloading functions.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a centerless grinder, comprising a bed, a control box fixedly connected to the top of the bed, a servo motor fixedly connected to one side of the control box, a rotating shaft rotatably connected inside the control box, the rotating shaft being coaxially and fixedly connected to the output end of the servo motor, a gear fixedly connected to the outside of the rotating shaft, a placement rod slidably connected to the top of the control box, and a rack fixedly connected to the bottom of the placement rod, the rack meshing with the gear.

[0008] As a further embodiment of this utility model: two mounting brackets are slidably connected above the bed body, and the two mounting brackets are symmetrically distributed.

[0009] As a further embodiment of this utility model: a protective cover is slidably connected to the outer side of the mounting bracket, two sliders are fixedly connected to the lower part of the protective cover, two sliding grooves are provided on the upper part of the mounting bracket, the two sliders are respectively located inside the sliding grooves and slidably connected thereto, a spring is provided inside the sliding groove, one end of the spring is fixedly connected to the side wall of the sliding groove, and the other end is fixedly connected to the slider.

[0010] As a further embodiment of this utility model: a grinding motor and an adjusting motor are fixedly connected to one side of each of the two mounting brackets, and a grinding wheel and an adjusting wheel are rotatably connected inside the two mounting brackets, wherein the output end of the grinding motor is fixedly connected to the grinding wheel on the same axis, and the output end of the adjusting motor is fixedly connected to the adjusting wheel on the same axis.

[0011] As a further embodiment of this utility model: two mounting plates are fixedly connected to the upper part of the bed, and hydraulic cylinders are fixedly connected to the inner side of each of the two mounting plates. The output ends of the two hydraulic cylinders are respectively fixedly connected to the side walls of the two mounting frames.

[0012] As a further embodiment of this utility model: a support block is fixedly connected to the inner wall of the mounting bracket on the side away from the control box, and the top of the support block is flush with the bottom of the placement rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By installing protective covers on the two mounting brackets, protection can be provided during the grinding process to prevent injury to the operator from the high-speed rotating grinding wheel. At the same time, it can also prevent the chips from flying everywhere during the grinding process, thus protecting the operator and the environment. A spring is installed between the mounting bracket and the protective cover to ensure that it can always be closed when grinding workpieces of different sizes, ensuring the protective effect.

[0015] 2. By setting a placement rod driven by a servo motor, gears, and racks on the control box, the automatic loading and unloading function is realized, eliminating the need for manual loading and unloading. This not only reduces labor costs and alleviates the labor intensity of operators, but also features a simple, reliable structure and high integration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the protective cover structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the control box and the placement rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the control box structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the placement rod structure of this utility model.

[0021] In the diagram: 1. Bed; 2. Control box; 3. Servo motor; 4. Rotary shaft; 5. Gear; 6. Placement rod; 7. Rack; 8. Mounting bracket; 9. Grinding motor; 10. Grinding wheel; 11. Adjusting motor; 12. Adjusting wheel; 13. Sliding groove; 14. Protective cover; 15. Spring; 16. Mounting plate; 17. Hydraulic cylinder; 18. Support block. Detailed Implementation

[0022] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0023] like Figures 1-5 As shown, this utility model provides a technical solution:

[0024] A centerless grinder includes a bed 1, a control box 2 fixedly connected to the top of the bed 1, a servo motor 3 fixedly connected to one side of the control box 2, a rotating shaft 4 rotatably connected inside the control box 2, the rotating shaft 4 being coaxially and fixedly connected to the output end of the servo motor 3, a gear 5 fixedly connected to the outside of the rotating shaft 4, a placement rod 6 slidably connected above the control box 2, and a rack 7 fixedly connected below the placement rod 6, the rack 7 meshing with the gear 5. The operator places the workpiece to be ground on the placement rod 6, then starts the servo motor 3, driving the rotating shaft 4 inside the control box 2 to rotate. The rotating shaft 4 drives the gear 5 on its outside to rotate. When the gear 5 rotates, it drives the rack 7 meshing with it to move horizontally. The rack 7, through the placement rod 6, drives the workpiece placed on the placement rod 6 to move between the grinding wheel 10 and the adjusting wheel 12.

[0025] Two mounting brackets 8 are slidably connected to the top of the bed frame 1. The two mounting brackets 8 are symmetrically distributed. Protective covers 14 are slidably connected to the outer side of the mounting brackets 8. Two sliders are fixedly connected to the bottom of the protective covers 14. Two sliding grooves 13 are opened on the top of the mounting brackets 8. The two sliders are located inside the sliding grooves 13 and are slidably connected thereto. A spring 15 is installed inside the sliding groove 13. One end of the spring 15 is fixedly connected to the side wall of the sliding groove 13, and the other end is fixedly connected to the slider. When the two mounting brackets 8 approach each other, they also drive the two protective covers 14 to approach each other. The two protective covers 14 fit together and cover the workpiece inside, thus achieving the protection function. When the size of the workpiece is small, the two protective covers 14 are already in a fitted state. At this time, the two mounting brackets 8 continue to approach each other. The spring 15 inside the sliding groove 13 contracts, ensuring that the two mounting brackets 8 will not be unable to approach each other due to the two protective covers 14 pressing against each other.

[0026] A grinding motor 9 and an adjusting motor 11 are fixedly connected to one side of each of the two mounting brackets 8. A grinding wheel 10 and an adjusting wheel 12 are rotatably connected inside the two mounting brackets 8. The output end of the grinding motor 9 is fixedly connected to the grinding wheel 10 on the same axis, and the output end of the adjusting motor 11 is fixedly connected to the adjusting wheel 12 on the same axis. When the grinding motor 9 and the adjusting motor 11 are started, they drive the grinding wheel 10 and the adjusting wheel 12 to rotate respectively. The grinding wheel 10 rotates at high speed to perform grinding, while the adjusting wheel 12 rotates at a slower speed in the same direction, thereby driving the workpiece to rotate and perform circumferential feed to achieve grinding of the workpiece.

[0027] Two mounting plates 16 are fixedly connected to the top of the bed 1. Hydraulic cylinders 17 are fixedly connected to the inner side of each mounting plate 16. The output ends of the two hydraulic cylinders 17 are fixedly connected to the side walls of the two mounting frames 8 respectively. When the two hydraulic cylinders 17 are started, the output ends of the two hydraulic cylinders 17 push the two mounting frames 8 closer to each other.

[0028] A support block 18 is fixedly connected to the inner wall of the mounting bracket 8 on the side away from the control box 2. The top of the support block 18 is flush with the bottom of the placement rod 6. When the placement rod 6 sends the workpiece between the grinding wheel 10 and the adjusting wheel 12, the two mounting brackets 8 move closer to each other until they move to the processing position. At this time, the support block 18 on the side wall of the two mounting brackets 8 supports the end of the placement rod 6 away from the control box 2 to ensure the stability of the placement rod 6 during the processing.

[0029] The working principle of this utility model is as follows:

[0030] First, the operator places the workpiece to be ground above the placement rod 6. Then, the servo motor 3 is started, driving the rotating shaft 4 inside the control box 2 to rotate. The rotating shaft 4 drives the gear 5 on its outer side to rotate. When the gear 5 rotates, it drives the rack 7 meshing with it to move horizontally. The rack 7, through the placement rod 6, moves the workpiece placed above the placement rod 6 between the grinding wheel 10 and the adjusting wheel 12. Then, the two hydraulic cylinders 17 are started. The output ends of the two hydraulic cylinders 17 push the two mounting brackets 8 closer together. When the two mounting brackets 8 are closer together, they also drive the two protective covers 14 to be closer together. The two protective covers 14 fit together, covering the workpiece inside, achieving a protective function and preventing the high-speed rotating grinding wheel from injuring the operator. At the same time, it also prevents the chips from flying everywhere during the grinding process, avoiding chip injury to the operator and protecting the environment. When the workpiece size is small, the two protective covers 14 are already in a fitted state. At this time, the two mounting brackets 8 continue to move closer together, and the spring 15 inside the sliding groove 13 contracts. To ensure that the two mounting brackets 8 are not prevented from getting closer due to the two protective covers 14 blocking each other, the system can always be closed to ensure protection when grinding workpieces of different sizes. The two mounting brackets 8 move closer to each other until they reach the processing position. At this time, the support blocks 18 on the side walls of the two mounting brackets 8 support the end of the placement rod 6 away from the control box 2 to ensure the stability of the placement rod 6 during processing. Then, the grinding motor 9 and the adjusting motor 11 are started, which drive the grinding wheel 10 and the adjusting wheel 12 to rotate respectively. The grinding wheel 10 rotates at high speed to perform grinding, while the adjusting wheel 12 rotates at a slower speed in the same direction, thereby driving the workpiece to rotate and perform circumferential feeding to achieve grinding of the workpiece. After grinding is completed, the two hydraulic cylinders 17 drive the two mounting brackets 8 to move away from each other, and the servo motor 3 is started. The placement rod 6 is moved outward through the gear 5 and the rack 7 to remove the ground workpiece. No manual loading and unloading is required, which not only reduces labor costs and the labor intensity of operators, but also has a simple and reliable structure with high integration.

[0031] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A centerless grinding machine comprising a machine bed (1), characterized in that: A control box (2) is fixedly connected to the top of the bed (1). A servo motor (3) is fixedly connected to one side of the control box (2). A rotating shaft (4) is rotatably connected inside the control box (2). The rotating shaft (4) is coaxially fixedly connected to the output end of the servo motor (3). A gear (5) is fixedly connected to the outside of the rotating shaft (4). A placement rod (6) is slidably connected to the top of the control box (2). A rack (7) is fixedly connected to the bottom of the placement rod (6). The rack (7) meshes with the gear (5).

2. The centerless grinding machine according to claim 1, characterized in that: Two mounting brackets (8) are slidably connected above the bed body (1), and the two mounting brackets (8) are symmetrically distributed.

3. A centerless grinding machine according to claim 2, characterized in that: A protective cover (14) is slidably connected to the outside of the mounting bracket (8). Two sliders are fixedly connected to the bottom of the protective cover (14). Two sliding grooves (13) are provided on the top of the mounting bracket (8). The two sliders are located inside the sliding grooves (13) and are slidably connected thereto. A spring (15) is provided inside the sliding groove (13). One end of the spring (15) is fixedly connected to the side wall of the sliding groove (13), and the other end is fixedly connected to the slider.

4. A centerless grinding machine according to claim 3, characterized in that: A sanding motor (9) and an adjusting motor (11) are fixedly connected to one side of each of the two mounting brackets (8). A sanding wheel (10) and an adjusting wheel (12) are rotatably connected inside each of the two mounting brackets (8). The output end of the sanding motor (9) is coaxially fixedly connected to the sanding wheel (10), and the output end of the adjusting motor (11) is coaxially fixedly connected to the adjusting wheel (12).

5. A centerless grinding machine according to claim 4, characterized in that: Two mounting plates (16) are fixedly connected to the top of the bed (1). Hydraulic cylinders (17) are fixedly connected to the inner side of the two mounting plates (16). The output ends of the two hydraulic cylinders (17) are fixedly connected to the side walls of the two mounting frames (8).

6. A centerless grinding machine according to claim 5, characterized in that: A support block (18) is fixedly connected to the inner wall of the mounting bracket (8) on the side away from the control box (2), and the top of the support block (18) is flush with the bottom of the placement rod (6).

Images