High-precision grinding device of centerless grinder for pre-treatment of polishing

Abstract

The utility model discloses a high accuracy grinding device of centerless grinding machine for polishing pretreatment, including centerless grinding machine, the one side of centerless grinding machine is provided with the feeding mechanism for feeding, the feeding mechanism includes support frame, feeding slide, mounting bracket, telescopic link, friction plate, the one side of centerless grinding machine is provided with support frame, both sides of support frame upper end are all fixedly set up with feeding slide, the surface fixed setting of feeding slide has mounting bracket, the upper end fixed setting of mounting bracket has telescopic link, the movable end fixed setting of telescopic link has friction plate, the upper end of feeding slide is provided with ladder shaft. The utility model is to ladder shaft, and design has the pretreatment mechanism, can rub and polish the vertical surface of ladder shaft simultaneously in the feeding, just need to polish the circumferential surface of ladder shaft in the subsequent centerless grinding machine work, first can improve the processing efficiency, second also can improve the polishing efficiency of ladder shaft vertical surface.

Description

Technical Field

[0001] This utility model relates to the field of centerless grinding technology, specifically a high-precision grinding device for centerless grinding machine used in pre-polishing treatment. Background Technology

[0002] Traditional centerless grinders achieve centerless grinding of workpieces by using a grinding wheel and a guide wheel. They have advantages such as high production efficiency and no need for tool retraction, and are widely used in the batch processing of slender shafts and sleeves.

[0003] In the existing technology for machining slender shafts, stepped shafts are often encountered. These stepped shafts vary in thickness and have a perpendicular surface to the grinding wheel. If a traditional centerless grinder uses the grinding wheel to grind and polish the perpendicular surface of the stepped shaft, the high-speed rotating grinding wheel cannot guarantee accurate positioning with the perpendicular surface of the stepped shaft, which can easily lead to insufficient grinding accuracy. Therefore, to address this issue, a high-precision grinding device for centerless grinders used for pre-polishing treatment is needed. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision grinding device for a centerless grinder used in pre-polishing treatment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision grinding device for a centerless grinder used in pre-polishing treatment, comprising a centerless grinder, a feeding mechanism for feeding material is provided on one side of the centerless grinder, the feeding mechanism includes a support frame, a feeding slide plate, a mounting frame, a telescopic rod, and a friction plate, the support frame is provided on one side of the centerless grinder, the feeding slide plate is fixedly provided on both sides of the upper end of the support frame, the mounting frame is fixedly provided on the surface of the feeding slide plate, the telescopic rod is fixedly provided on the upper end of the mounting frame, the friction plate is fixedly provided on the movable end of the telescopic rod, a stepped shaft is provided on the upper end of the feeding slide plate, the stepped shaft has a first transmission mechanism at the upper end for transmitting the stepped shaft along the feeding slide plate and generating friction polishing between it and the friction plate, and the support frame has a second conveying mechanism on one side of the feeding slide plate for transmitting the stepped shaft into the centerless grinder.

[0006] Preferably, the first transmission mechanism includes a first pulley, a first transmission belt, and a first servo motor. The first pulley is provided on both sides of the upper end of the feeding slide, and the first transmission belt is sleeved on the outer surface of the first pulley. The first servo motor is provided on one side of the first pulley, and the power output shaft of the first servo motor is connected to the first pulley for transmission. The first transmission mechanism can transmit power to the stepped shaft, so that the stepped shaft has sufficient power to perform friction and grinding on the vertical surface. The first servo motor can drive the first pulley to rotate, thereby enabling the first transmission belt to generate power.

[0007] Preferably, the second conveying mechanism includes a second pulley, a second transmission belt, and a second servo motor. The second pulley is fixedly mounted on the upper end of the support frame on the feeding slide plate. The second transmission belt is sleeved between the second pulleys. The second servo motor is fixedly mounted on one side of the surface of the second pulley. The power output shaft of the second servo motor is connected to the second pulley for transmission. The stepped shaft with the vertical surface polished can be fed into the centerless grinder through the second conveying mechanism, and then polished using the centerless grinder.

[0008] Preferably, a baffle is provided on the upper end of the support frame on one side of the second transmission belt, which can prevent the stepped shaft from slipping off the upper end of the second transmission belt.

[0009] Preferably, a baffle is provided on the upper end of the support frame on one side of the second transmission belt, which can prevent the stepped shaft from slipping off the upper end of the second transmission belt.

[0010] Preferably, the feeding slide is inclined. The inclined feeding slide allows the stepped shaft to slide into the lower section of the first transmission belt using the downward force. Under the friction of the first transmission belt, the stepped shaft is transmitted along the feeding slide. During this process, the stepped shaft continuously rolls, and under the action of the friction plate, the vertical surface of the continuously rolling stepped shaft can rub against the friction plate. In this way, the vertical surface of the stepped shaft can be rubbed and polished during the feeding stage. Thus, during the subsequent centerless grinding operation, only the circumferential surface of the stepped shaft needs to be polished.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model sets up a cooperative structure between a first transmission mechanism and a friction plate in the feeding mechanism. During the process of conveying the stepped shaft along the feeding slide, its vertical end face rubs and polishes with the friction plate. There is no need to add a separate end face processing step. The polishing pretreatment of the vertical end face can be completed in the feeding stage, which effectively improves the overall processing efficiency.

[0013] 2. This utility model can flexibly push the friction plate with the telescopic rod, and the grinding layer can be attached to the outer side of the vertical surface of the stepped shaft in real time, which greatly improves the applicability of the device and meets the needs of different batch production scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the high-precision grinding device for centerless grinding machines used in pre-polishing treatment according to this utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of the high-precision grinding device for centerless grinding machines used in pre-polishing treatment according to this utility model. Figure 2 ;

[0016] Figure 3 This is a top view of the high-precision grinding device for centerless grinding machines used in pre-polishing treatment according to this utility model;

[0017] Figure 4 This is a rear view of the high-precision grinding device for centerless grinding machines used in pre-polishing treatment according to this utility model.

[0018] Figure 5 This is an overall structural view of the second transmission mechanism of the high-precision grinding device for centerless grinding machines used in pre-polishing treatment according to this utility model;

[0019] Figure 6 This utility model relates to a high-precision grinding device for centerless grinding machines used in pre-polishing treatment. Figure 4 A magnified view of point A in the middle.

[0020] In the diagram: 1. Centerless grinder; 2. Feeding mechanism; 21. Support frame; 22. Feeding slide plate; 23. Mounting bracket; 24. Telescopic rod; 25. Friction plate; 3. First transmission mechanism; 31. First pulley; 32. First transmission belt; 33. First servo motor; 4. Second conveying mechanism; 41. Second pulley; 42. Second transmission belt; 43. Second servo motor; 5. Stepped shaft; 6. Baffle. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a high-precision grinding device for centerless grinding machine used for pre-polishing treatment, including a centerless grinding machine 1. The centerless grinding machine 1 adopts the existing mature centerless grinding structure. Its core is composed of a grinding wheel, a guide wheel and a support plate, which is used to complete the grinding of the circumferential surface of the stepped shaft 5. In this embodiment, no improvement is made to its internal structure, but only a feeding mechanism 2 is added to its feeding side.

[0023] The feeding mechanism 2 is the core improvement of this utility model, which includes a support frame 21, a feeding slide plate 22, a mounting frame 23, a telescopic rod 24, and a friction plate 25. The support frame 21 is made of welded steel and is fixed to the ground on one side of the centerless grinder 1 by expansion bolts to ensure the stability of the overall structure. The feeding slide plates 22 are symmetrically welded to both sides of the upper end face of the support frame 21. The feeding slide plates 22 are made of steel plate and are arranged at a 15° inclination, with the lower end of the inclination facing the feed port of the centerless grinder 1. The weight of the stepped shaft 5 generates a downward force to assist in the conveying of the workpiece.

[0024] A mounting bracket 23 is bolted to the upper surface of the feeding slide 22. The mounting bracket 23 is a portal frame structure spanning above the feeding slide 22. A telescopic rod 24 is fixedly mounted on the upper end of the crossbeam of the mounting bracket 23. In this embodiment, the telescopic rod 24 is an electric telescopic rod, whose control end is electrically connected to the main control system of the centerless grinder, and the telescopic amount can be precisely adjusted through the control system. A friction plate 25 is bolted to the movable end of the telescopic rod 24. The friction plate 25 is a rectangular steel plate, and an alumina wear-resistant grinding layer is bonded to its lower end surface. The mesh size of the wear-resistant grinding layer can be selected according to the processing accuracy requirements. In this embodiment, an 800-mesh grinding layer is selected. A gap is formed between the lower end surface of the friction plate 25 and the upper surface of the feeding slide 22 for the stepped shaft 5 to pass through.

[0025] A first transmission mechanism 3 is provided at the upper end of the feeding slide plate 22, which is used to drive the stepped shaft 5 to move and rotate along the length direction of the feeding slide plate 22. The first transmission mechanism 3 includes a first pulley 31, a first transmission belt 32, and a first servo motor 33. The first pulley 31 is rotatably provided on both sides of the upper end of the feeding slide plate 22 along its length direction through bearing seats. A closed rubber first transmission belt 32 is sleeved on the outside of the first pulley 31. The first servo motor 33 is located on one side of the first pulley 3. The power output shaft of the first servo motor 33 is connected to one of the driving first pulleys 31 through a coupling and a reducer. Driven by the first servo motor 33, the first transmission belt 32 is driven to rotate, thereby driving the stepped shaft 5 to move along the feeding direction. At the same time, the stepped shaft 5 rotates under the action of the friction of the belt.

[0026] A second conveying mechanism 4 is fixed to the discharge end of the feeding slide plate 22 on the support frame 21. This mechanism is used to convey the stepped shaft 5, after end face grinding, into the centerless grinder 1. The second conveying mechanism 4 includes a second pulley 41, a second transmission belt 42, and a second servo motor 43. A mounting base is welded to the upper end of the support frame 21 at the discharge end of the feeding slide plate 22. The second pulley 41 is rotatably mounted on the mounting base via bearings. The second pulley 41 is arranged along the feeding direction, and a closed second transmission belt 42 is sleeved on its outer side. Two second transmission belts 42 are provided, arranged parallel and spaced apart. The spacing is adapted to the minimum diameter of the stepped shaft 5, forming a limiting support for the stepped shaft 5. A second servo motor 43 is fixed to one side of the mounting base via a motor mount. The power output shaft of the second servo motor 43 is connected to one of the second pulleys 41 via a coupling and a reducer, driving the second transmission belt 42 to rotate and realize the conveying of the stepped shaft 5.

[0027] To prevent the stepped shaft 5 from slipping off from the side while being conveyed on the second transmission belt 42, a baffle 6 is bolted to the upper end of the support frame 21 on the outside of the second transmission belt 42. The baffle 6 is made of steel plate and is arranged along the length of the second transmission belt 42. Its height is higher than the maximum diameter of the stepped shaft 5 to ensure the blocking and limiting effect on the stepped shaft 5.

[0028] Work process:

[0029] When using this device, the extension and retraction of the telescopic rod 24 is first adjusted according to the specifications of the stepped shaft 5 to be processed through the main control system of the centerless grinder.

[0030] The stepped shaft 5 to be processed is placed on the inclined upper end of the feeding slide plate 22. Under its own weight, the stepped shaft 5 slides down the feeding slide plate 22 and enters the lower end of the first transmission belt 32. The first servo motor 33 is started, which drives the first pulley 31 to rotate, causing the first transmission belt 32 to move synchronously. The first transmission belt 32 drives the stepped shaft 5 to move along the feeding direction through friction, and at the same time, the stepped shaft 5 rotates under the friction of the belt. When the stepped shaft 5 moves between the friction plates 25, its vertical end face is in close contact with the wear-resistant grinding layer on the surface of the friction plate 25. Since the stepped shaft 5 is in a rotating state, a continuous friction is generated between its vertical end face and the wear-resistant grinding layer, realizing the pre-polishing grinding of the vertical end face.

[0031] The stepped shaft 5, having completed vertical end face grinding, moves along the first transmission belt 32 to the discharge end of the feeding slide 22 and enters the second conveyor mechanism 4 between the two second transmission belts 42. The second servo motor 43 is activated, driving the second pulley 41 to rotate, which in turn moves the second transmission belts 42. The friction of the second transmission belts 42 propels the stepped shaft 5 towards the feed inlet of the centerless grinder 1. A baffle 6 provides lateral restraint to prevent slippage. Once inside the centerless grinder 1, the grinding wheel and guide wheel work together to perform high-precision grinding on the circumferential surface of the stepped shaft 5. Since the vertical end face of the stepped shaft 5 has already undergone pre-treatment grinding, the centerless grinder does not need to further process the end face, thus improving the processing efficiency of the centerless grinder and avoiding insufficient end face grinding precision.

[0032] After machining, the stepped shaft 5 is discharged from the discharge end of the centerless grinder 1, completing the entire machining process. Throughout the process, feeding, end face pretreatment, and circumferential grinding are seamlessly integrated, significantly improving production efficiency and machining accuracy.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision grinding apparatus for centerless grinding machines used in pre-polishing treatment, comprising a centerless grinding machine (1), characterized in that: The centerless grinder (1) is provided with a feeding mechanism (2) for feeding materials on one side. The feeding mechanism (2) includes a support frame (21), a feeding slide plate (22), a mounting frame (23), a telescopic rod (24), and a friction plate (25). The centerless grinder (1) is provided with a support frame (21) on one side. The upper ends of the support frame (21) are fixedly provided with feeding slide plates (22) on both sides. The surface of the feeding slide plate (22) is fixedly provided with a mounting frame (23). The upper end of the mounting frame (23) is fixedly provided with a... The telescopic rod (24) has a friction plate (25) fixedly installed at its movable end. The upper end of the feeding slide plate (22) is provided with a stepped shaft (5). The upper end of the stepped shaft (5) has a first transmission mechanism (3) for transmitting the stepped shaft (5) along the feeding slide plate (22) and generating friction polishing between it and the friction plate (25). The support frame (21) has a second conveying mechanism (4) on one side of the feeding slide plate (22) for transmitting the stepped shaft (5) into the centerless grinder (1).

2. The high-precision grinding device for centerless grinding machine used for pre-polishing treatment according to claim 1, characterized in that: The first transmission mechanism (3) includes a first pulley (31), a first transmission belt (32), and a first servo motor (33). The first pulley (31) is provided on both sides of the upper end of the feeding slide plate (22). The first transmission belt (32) is sleeved on the outer surface of the first pulley (31). The first servo motor (33) is provided on one side of the first pulley (31). The power output shaft end of the first servo motor (33) is connected to the first pulley (31) for transmission.

3. The high-precision grinding device for centerless grinding machine used for pre-polishing treatment according to claim 1, characterized in that: The second conveying mechanism (4) includes a second pulley (41), a second transmission belt (42), and a second servo motor (43). The second pulley (41) is fixedly installed on the upper end of the support frame (21) on the feeding slide plate (22). The second transmission belt (42) is sleeved between the second pulleys (41). The second servo motor (43) is fixedly installed on one side of the surface of the second pulley (41). The power output shaft end of the second servo motor (43) is connected to the second pulley (41) for transmission.

4. The high-precision grinding device for centerless grinding machine used in pre-polishing treatment according to claim 3, characterized in that: A baffle (6) is provided on one side of the second transmission belt (42) at the upper end of the support frame (21).

5. The high-precision grinding device for centerless grinding machine used in pre-polishing treatment according to claim 3, characterized in that: The second transmission belt (42) has two sections.

6. The high-precision grinding apparatus for centerless grinding machines used in pre-polishing treatment according to claim 1, characterized in that: The feeding slide (22) is inclined.

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