Grinding machine oilstone pressure mechanism capable of being automatically adjusted

Abstract

The utility model discloses a grinding machine oilstone pressure mechanism capable of being automatically adjusted, belongs to the technical field of bearing machining, and relates to bearing ring grinding machining. The mechanism comprises an adjusting support, an adapter plate, a supporting circular clamp and a constant-pressure feeding mechanism, and the adjusting support is a T-shaped two-dimensional sliding table and is used for supporting and two-dimensional adjusting of the constant-pressure feeding mechanism. And the adapter plate is used for connecting the horizontal sliding table of the two-dimensional sliding table and the supporting circular clamp. And the supporting circular clamp is used for vertically clamping the constant-pressure feeding mechanism. A guide cylinder of the constant-pressure feeding mechanism is vertically installed in a clamping hole of the supporting round clamp, a guide rod is installed in an inner hole of the guide cylinder in a sliding mode, and an oilstone clamping plate is fixed to the lower end of the guide rod and used for clamping oilstones. The guide rod is coaxially sleeved with the spring, constant pressure is provided for oilstone grinding, and the pressure value of the spring is set according to the grinding pressure requirement of the bearing ring to be machined for oilstone. By means of the structure, constant-pressure automatic adjustment of oilstones during grinding of small-diameter and thin-wall bearing rings is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing processing, relates to the grinding processing of bearing rings, and specifically relates to an oilstone pressure mechanism of a grinding machine which can be adjusted independently. Background Art

[0002] During the grinding process of bearing rings, the rectangular oilstone is usually clamped vertically on the super-finishing cylinder of the grinder, and the continuous bearing rings to be processed are placed horizontally between the two rollers of the grinder, directly below the oilstone. The pressure of the super-finishing cylinder is adjusted to make the bottom surface of the rectangular oilstone have a certain pressure contact with the outer diameter of the bearing ring, and the two rollers drive the rings to be processed to rotate. The rotation also controls the axial movement of the rings to be processed, and the movement direction is along the length direction of the bottom surface of the oilstone, ensuring that the bottom surface of the oilstone is in continuous pressure contact with the outer diameter of the bearing ring, thereby achieving the grinding of the outer diameter of the bearing ring to be processed.

[0003] The grinding equipment mainly uses super-precision cylinders to achieve pneumatic adjustment of oilstone pressure, which is usually suitable for mass production of bearing rings with an outer diameter greater than φ100mm and a wall thickness of more than 20mm. However, for thin-walled small batch samples with an outer diameter between φ3 and φ50mm and a wall thickness of 3-12mm, this equipment cannot be used for grinding. The reasons are: 1. Thin-walled rings have low strength and are easy to deform during processing. The grinding amount is small and the accuracy is difficult to guarantee; 2. The pneumatic pressure is unstable and fluctuates greatly, resulting in poor control of the oilstone pressing force. When the pressing force is too small, the expected grinding effect cannot be achieved. When the pressing force is too large, the ring is easy to deform, which easily leads to dimensional deviations, such as ovality and roundness that do not meet the requirements. In short, the existing grinding equipment with pneumatic adjustment of oilstone pressure is not suitable for the processing of small-diameter and thin-walled bearing rings, and the scrap rate is high during use. When processing small batches of samples, since there is no special pneumatic adjustment equipment for oilstone pressure suitable for grinding small-diameter and thin-walled bearing rings, in order to realize the grinding of small batches of samples of small-diameter and thin-walled bearing rings, workers with rich grinding processing technology are usually required to manually control the oilstone pressure feed. On the one hand, this places high technical requirements on the workers, and on the other hand, the processing efficiency is low.

[0004] Therefore, it is necessary to design an independently adjustable oilstone pressure mechanism suitable for the grinding of bearing rings with an outer diameter between φ3 and φ50 mm and a wall thickness of 3-12 mm, which can be matched with the grinding equipment to meet the grinding processing of small batches of small-diameter and thin-walled bearing rings. Summary of the invention

[0005] Technical issues to be solved:

[0006] In order to avoid the shortcomings of the prior art, the present invention provides an autonomously adjustable oilstone pressure mechanism for a grinding machine, by installing a constant pressure feed mechanism on a T-shaped two-dimensional sliding table, clamping the oilstone at the end of the constant pressure feed mechanism, and adjusting and controlling the oilstone pressure through a fixed pressure spring, thereby realizing autonomous adjustment of the oilstone pressure during grinding of small-diameter and thin-walled bearing rings.

[0007] The technical solution of the present invention is: an automatically adjustable grinding machine oilstone pressure mechanism, comprising an adjustment support, an adapter plate, a supporting circular card, and a constant pressure feeding mechanism;

[0008] The adjustment support is a T-shaped two-dimensional sliding table, including a vertical sliding table and a horizontal sliding table, and the adjustment support is used for supporting and two-dimensionally adjusting the constant pressure feeding mechanism;

[0009] One end of the adapter plate can be adjusted to connect to the end of the horizontal slide, and the other end is fixed with a supporting circular clamp; the supporting circular clamp is used to vertically clamp the constant pressure feed mechanism;

[0010] The constant pressure feeding mechanism includes a guide cylinder, a guide rod, an oilstone clamp, a spring, and a limiting structure; the guide cylinder is vertically and coaxially installed in the clamping hole of the supporting circular clamp; the guide rod is coaxially and slidably installed in the inner hole of the guide cylinder, and its upper end surface is connected to the top surface of the guide cylinder through a limiting structure, which is used to limit the guide rod from slipping out of the guide cylinder downward, and an oilstone clamp is fixed to the lower end surface of the guide rod; the oilstone clamp is used to clamp the oilstone; the spring is coaxially sleeved on the guide rod, one end of the spring is against the lower end surface of the guide cylinder, and the other end is against the top surface of the oilstone clamp; the spring pressure is set according to the grinding pressure requirement of the bearing ring to be processed for the oilstone.

[0011] A further technical solution of the present invention is: the adapter plate is an L-shaped plate, one side of which is in contact with the parallel surface of the horizontal slide, and the side is provided with a strip mounting hole for passing bolts to be installed in an adjustable position with the horizontal slide; the other side is provided with a threaded hole at the center for installing a supporting circular card.

[0012] A further technical solution of the present invention is: the supporting circular card is formed by docking a left semicircular card and a right semicircular card, the left semicircular card is fixedly connected to the threaded hole of the adapter plate by a first bolt, and the right semicircular card is fixedly connected to the left semicircular card by a second bolt; a through hole with an elliptical cross-section is formed at the center position of the docked supporting circular card, which serves as a clamping hole for installing the guide cylinder; the axis of the clamping hole of the supporting circular card is parallel to the vertical slide.

[0013] A further technical solution of the present invention is: the guide tube body is a hollow cylindrical tube structure, and its outer diameter contacts the inner wall of the clamping hole of the supporting circular clamp; limit platforms are provided at both ends of the guide tube, and the limit platforms are used to limit the axial displacement of the guide tube in the clamping hole of the supporting circular clamp.

[0014] A further technical solution of the present invention is that the guide rod is cylindrical and is clearance-matched with the inner hole of the guide cylinder.

[0015] A further technical solution of the present invention is: the limiting structure includes a gasket and an adjusting bolt, the gasket is horizontally placed on the upper end surface of the guide cylinder, and a through hole is provided in the center of the gasket; the rod of the adjusting bolt passes through the through hole of the gasket and is threadedly connected to the top end of the guide rod; the head diameter of the adjusting bolt is larger than the through hole diameter of the gasket; the outer diameter of the gasket is larger than the aperture of the guide cylinder.

[0016] A further technical solution of the present invention is that the top end of the guide rod is clearance-matched with the lower end surface of the gasket.

[0017] A further technical solution of the present invention is: the spring is a fixed pressure spring, the pressure value range of the spring is 20N-50N, and the spring pressure of two adjacent pressure values ​​increases by 0.5N.

[0018] A further technical solution of the present invention is: the oilstone clamp includes a top plate and two side plates; the top plate is horizontally fixed to the lower end surface of the guide rod; the two side plates are arranged in parallel and vertically installed on the bottom surface of the top plate; the oilstone is vertically inserted between the two side plates; one side plate is provided with a plurality of threaded holes for passing fastening bolts to fix the position of the oilstone.

[0019] Beneficial Effects

[0020] The beneficial effects of the present invention are as follows: the present invention is a self-adjustable grinding machine oilstone pressure mechanism, which uses a two-dimensional sliding table in conjunction with an adapter plate and a supporting circular clip to vertically install a constant pressure feed mechanism, thereby facilitating the position adjustment of the constant pressure feed mechanism and facilitating the alignment of the oilstone and the bearing ring to be ground. The horizontal movement of the constant pressure feed mechanism can be achieved by screwing the adjustment handle of the horizontal slide; the vertical movement of the constant pressure feed mechanism can be achieved by screwing the adjustment handle of the vertical slide; at the same time, by adjusting the installation position of the bolts fixing the adapter plate and the horizontal slide in the strip hole of the adapter plate, the extension length of the adapter plate along the horizontal slide can be adjusted. Multiple groups of adjustment methods facilitate the initial positioning of the oilstone, and also facilitate the adjustment of the oilstone during the grinding process.

[0021] The constant pressure feeding mechanism of the present invention realizes constant pressure feeding through a constant pressure spring. The spring is selected according to the pressure requirement of the oilstone. The present invention presets multiple constant pressure springs, which start from a pressure of 20N and increase by 0.5N, and are 20N, 20.5N, 21N... until 50N. A variety of spring pressure specifications can meet the grinding requirements of bearing rings of different specifications and sizes. By replacing springs with different pressures, the pressing force of the constant pressure feeding mechanism on the bearing ring can be adjusted.

[0022] The present invention has a simple structure and low cost. The clamping force of the constant pressure feed mechanism is adjusted autonomously by the constant pressure spring, which ensures the processing accuracy and quality and improves the processing efficiency. At the same time, the constant pressure clamping force is easy to adjust and replace, and it can be achieved by simply replacing springs with different pressures. It is suitable for grinding small-diameter and thin-walled bearing rings of various sizes with an outer diameter between φ3 and φ50 mm and a wall thickness of 3-12 mm. The structure of the present invention realizes the autonomous adjustment of the oilstone constant pressure during grinding, and has good economic efficiency and universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the adjusting support in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the transfer board in the present invention;

[0026] Figure 4 This is a schematic diagram of the overall structure of the supporting circular card in the present invention;

[0027] Figure 5 It is a schematic diagram of the left semicircle card structure;

[0028] Figure 6 It is a schematic diagram of the right semicircle card structure;

[0029] Figure 7 This is a schematic diagram of the guide tube structure;

[0030] Figure 8 Schematic diagram of the structure of the guide rod connected to the oilstone clamp.

[0031] Explanation of the accompanying drawings: 1. Adjustment support, 11. Vertical slide, 111. Adjustment handle of vertical slide, 112. Screw of vertical slide, 12. Horizontal slide, 121. Adjustment handle of horizontal slide, 122. Adapter plate mounting hole, 2. Adapter plate, 21. Strip mounting hole, 22. Threaded hole, 3. Support circular clamp, 31. Left semicircular clamp, 32. Right semicircular clamp, 33. First bolt, 34. Second bolt, 4. Constant pressure feed mechanism, 41. Guide cylinder, 411. Limiting platform, 42. Guide rod, 43. Oilstone clamp, 431. Top plate, 432. Side plate, 44. Spring, 45. Gasket, 46. Adjustment bolt, 47. Fastening bolt, 5. Oilstone, 6. Bearing ring to be processed, 7. Large roller, 8. Small roller, 9. Mounting seat of grinder. DETAILED DESCRIPTION

[0032] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] See also Figure 1 The present invention provides a self-adjustable grinding machine oilstone pressure mechanism, which is installed in a bearing ring grinding machine and is used for grinding small batches of small-diameter and thin-walled bearing rings of various sizes with an outer diameter between φ3 and φ50 mm and a wall thickness between 3 and 12 mm. The self-adjustable grinding machine oilstone pressure mechanism of the present invention comprises an adjustment support 1, an adapter plate 2, a support circular card 3, and a constant pressure feed mechanism 4, and the constant pressure feed mechanism 4 is used to realize the self-adjustment of the oilstone constant pressure during grinding.

[0035] See also Figure 2 The adjustment support 1 is a T-shaped two-dimensional manual adjustment slide. The T-shaped two-dimensional slide is a prior art, including a vertical slide 11 and a horizontal slide 12. Both slides are lead screw slider structures. The adjustment support 1 is used for the support and two-dimensional adjustment of the constant pressure feed mechanism 4. By screwing the adjustment handle of the adjustment support 1, the stepless adjustment of the clamping force of the constant pressure feed mechanism 4 can be achieved, and the adjustment is simple and convenient, which improves the processing efficiency of the grinder. Specifically, the vertical slide 11 of the adjustment support 1 is vertically fixed to the mounting seat of the grinder by bolts. The adjustment handle 111 of the vertical slide drives the lead screw 112 of the vertical slide to rotate, driving the slider installed on the lead screw 112 to slide vertically along the lead screw 112. The horizontal slide 12 is perpendicular to the vertical slide 11, and is fixedly connected to the slider of the vertical slide 11. The overall up and down movement of the horizontal slide 12 is achieved by screwing the adjustment handle 111 of the vertical slide. At the same time, an adjustment handle 121 of the horizontal slide is fixed to the end of the screw of the horizontal slide 12. By screwing the adjustment handle 121 of the horizontal slide, the horizontal movement of the horizontal slide 12 is adjusted. The horizontal slide 12 is provided with two rows of four adapter plate mounting holes 122 at one end away from its adjustment handle 121, which are used to install the adapter plate 2 through bolts. The vertical slide 11 and the horizontal slide 12 of the adjustment support 1 are both provided with scales to facilitate control of the adjustment size. At the same time, the vertical slide 11 and the horizontal slide 12 are both provided with locking devices, which are used to lock the slides after adjustment to ensure the stability and reliability of the work.

[0036] See also Figure 3The adapter plate 2 is an L-shaped plate, one side of which is parallel to and in surface contact with the horizontal slide 12. The side plate is provided with two strip-shaped mounting holes 21, and two bolts are installed in each strip hole and connected to the adapter plate mounting holes 122 of the horizontal slide 12. By adjusting the position of the bolts in the two strip holes, the installation position of the adapter plate 2 can be adjusted to achieve the expansion and contraction of the adapter plate 2 along the horizontal slide 12. A threaded hole 22 is provided at the center of the other side of the adapter plate 2 for installing the supporting circular card 3.

[0037] See also Figure 4-6 , the support circular card 3 is fixed to the adapter plate 2, and is used to vertically clamp the constant pressure feed mechanism 4. Specifically, the support circular card 3 is formed by docking a left semicircular card 31 and a right semicircular card 32. The left semicircular card 31 is fixedly connected to the threaded hole 22 of the adapter plate 2 by a first bolt 33, and the right semicircular card 32 is fixedly connected to the left semicircular card 31 by two second bolts 34. The center of the left semicircular card 31 and the right semicircular card 32 are both provided with an inner concave portion with a semi-elliptical cross section. When the left semicircular card 31 and the right semicircular card 32 are docked, a through hole with an elliptical cross section is formed at the center position of the support circular card 3, which serves as a clamping hole for installing the constant pressure feed mechanism 4. After the support circular card 3 is installed in place, the central axis of its clamping hole is perpendicular to the horizontal plane. In order to ensure installation stability, the first bolt 33 mounting hole of the left semicircular card 31 is located at the geometric center position of the left semicircular card 31 and is perpendicular to the central axis of the clamping hole. The mounting holes of the two second bolts 34 on the right semicircular card 32 and the mounting holes of the first bolts 33 on the left semicircular card 31 are located on the same horizontal plane and on both sides of the mounting holes of the first bolts 33. At the same time, the left semicircular card 31 is provided with threaded holes corresponding to the mounting holes of the two second bolts 34 on the right semicircular card 32.

[0038] See also Figure 1 , 7 , 8, the constant pressure feeding mechanism 4 includes a guide cylinder 41, a guide rod 42, an oilstone clamp 43, a spring 44, a gasket 45, and an adjusting bolt 46. The constant pressure feeding mechanism 4 is used to provide a stable pressure for the oilstone 5, and then provide a stable grinding pressure for the bearing ring 6 to be processed. The main body of the guide cylinder 41 is a hollow cylindrical cylinder structure, which is vertically and coaxially installed in the clamping hole of the support circular card 3, and its outer diameter contacts the inner wall of the clamping hole of the support circular card 3, specifically, contacts the inner wall of the elliptical minor axis direction of the clamping hole. Both ends of the guide cylinder 41 are provided with a limit table 411, which is used to limit the axial displacement of the guide cylinder 41 in the clamping hole of the support circular card 3. The outer diameter of the limit platform 411 is larger than the elliptical minor axis aperture of the clamping hole. The supporting circular card 3 is located between the limit platforms 411 at both ends of the guide cylinder 41 and contacts the two limit platforms 411 surfaces, that is, the lower end surface of the limit platform 411 at the upper end of the guide cylinder 41 contacts the upper end surface of the supporting circular card 3, and the upper end surface of the limit platform 411 at the lower end of the guide cylinder 41 contacts the lower end surface of the supporting circular card 3.

[0039] The guide rod 42 is coaxially slidably installed in the inner hole of the guide cylinder 41, and the two are matched and ground to make the matching clearance within 0.01mm. The upper end of the guide rod 42 is limited by the gasket 45 and the adjusting bolt 46 to limit its axial downward sliding position. Specifically, the two gaskets 45 are stacked in sequence and placed horizontally on the upper end surface of the guide cylinder 41. The center of the gasket 45 is provided with a through hole. The rod of the adjusting bolt 46 passes through the through holes of the two gaskets 45 in sequence and is threadedly connected with the threaded hole at the top of the guide rod 42. The head of the adjusting bolt 46 is located above the two gaskets 45, and the diameter of the head of the adjusting bolt 46 is larger than the through hole diameter of the gasket 45 to prevent it from falling off from the center hole of the gasket 45. The outer diameter of the gasket 45 is larger than the inner hole diameter of the guide cylinder 41, so that it can be stuck on the upper end surface of the guide cylinder 41 to prevent the guide rod 42 from falling off. At the same time, the number of gaskets 45 can be selected according to demand to ensure that the guide rod 42 and the connecting parts at the lower end of the guide rod 42 can be stably carried. The top of the guide rod 42 is matched with the lower end surface of the gasket 45, specifically, there is a gap of 10mm to ensure the moving distance of the guide rod 42. The lower end surface of the guide rod 42 is fixed with an oilstone clamping plate 43, so that the oilstone clamping plate 43 and the guide rod 42 are integrated, and the oilstone clamping plate 43 is used to clamp the oilstone 5.

[0040] The oilstone clamp 43 includes a top plate 431 and two side plates 432. The top plate 431 is horizontally fixed to the lower end surface of the guide rod 42, and the two side plates 432 are arranged in parallel and vertically installed on the bottom surface of the top plate 431. The two side plates 432 are rectangular plates, and the gap between the two matches the thickness of the oilstone 5, which is used to insert the oilstone 5. The oilstone 5 of the rectangular structure is vertically inserted between the two side plates 432, and the side plate 432 located on the outside of the oilstone 5 is provided with four threaded holes arranged at equal intervals in a straight line, which are used to pass four fastening bolts 47 to fix the position of the oilstone 5. At the same time, the fastening bolts 47 can be adjusted to move the oilstone 5 as needed to ensure effective contact between the oilstone 5 and the bearing ring 6 to be processed; it is also convenient to replace the oilstone 5.

[0041] The spring 44 is a constant pressure spring, which is coaxially mounted on the guide rod 42 to provide a downward pressing force for the oilstone 5. The upper end of the spring 44 abuts against the lower end surface of the guide cylinder 41, and the lower end of the spring 44 abuts against the upper end surface of the top plate 431 of the oilstone clamp. The pressure of the spring 44 is set according to the grinding pressure requirement of the bearing ring 6 to be processed on the oilstone 5. Specifically, the spring 44 provides a constant pressure for the oilstone 5, and the pressure value of the spring 44 is set at 20N-50N. The spring pressure of two adjacent pressure values ​​increases by 0.5N. For example, multiple springs 44 including 20N, 20.5N, 21N... up to 50N are available for selection. In order to meet the grinding requirements of bearing rings of different specifications and sizes, the pressing force of the constant pressure feed mechanism on the bearing ring 6 to be processed is adjusted by replacing springs 44 with different pressure values.

[0042] When in use, the adjustment support 1 is installed on the workbench mounting seat 9 of the grinder, and the height of its horizontal slide 12 is preliminarily adjusted to an appropriate position. The guide cylinder 41 is fixed with the support circular card 3, and then the spring 44 of the corresponding pressure value is installed and installed into the guide rod 42 according to the grinding requirements of the bearing ring 6 to be processed. In this embodiment, a customized 20N spring is selected. Then, the guide rod 42 fixed with the oilstone clamping plate 43 is installed from bottom to top into the inner hole of the guide cylinder 41, and the adjustment bolt 46 is screwed into the threaded hole at the top of the guide rod 42 through the gasket 45, and then the oilstone 5 is fixed to the oilstone clamping plate 43. According to the diameter size of the bearing ring 6 to be processed, the adjustment support 1 is adjusted so that the oilstone 5 is located directly above the bearing ring 6 to be processed, and the lower end surface of the oilstone 5 is in constant pressure contact with the outer diameter of the bearing ring 6 to be processed. Start the grinding equipment, the large roller shaft 7 and the small roller shaft 8 of the grinder rotate at the same speed, driving the bearing ring 6 to rotate while moving axially along the length direction of the oilstone 5 to fit the oilstone 5 for grinding. The constant pressure feed mechanism 4 provides constant pressure through the spring 44 during the grinding process. The upper end of the spring 44 supports the bottom of the guide cylinder 41, and the lower end supports the oil stone clamp 43 to form an elastic downward pressure end, which transmits the pressure to the outer diameter of the bearing ring 6 to be processed through the oil stone 5. In order to ensure the stability of the pressure, the guide rod 42 can move up and down in the guide cylinder 41, which ensures the stability of the up and down movement of the oil stone 5 during the grinding process, so that the oil stone 5 is always in a good working state during work, and improves the qualified rate and grinding accuracy of the product. The clamping force of the constant pressure feed mechanism 4 is adjusted by replacing the spring 44 with different pressure values. At the same time, the operator fine-tunes the height of the support 1 according to the grinding situation and combined with work experience to process the bearing ring that meets the required accuracy.

[0043] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A self-adjustable grinding machine oilstone pressure mechanism, characterized in that: It comprises an adjustment support (1), an adapter plate (2), a supporting circular card (3), and a constant pressure feeding mechanism (4); The adjustment support (1) is a T-shaped two-dimensional sliding table, comprising a vertical sliding table (11) and a horizontal sliding table (12), and the adjustment support (1) is used for supporting and two-dimensionally adjusting the constant pressure feeding mechanism (4); One end of the adapter plate (2) can be adjusted to connect to the end of the horizontal slide (12), and the other end is fixed with a supporting circular clamp (3); the supporting circular clamp (3) is used to vertically clamp the constant pressure feeding mechanism (4); The constant pressure feeding mechanism (4) comprises a guide cylinder (41), a guide rod (42), an oilstone clamp (43), a spring (44), and a limiting structure; the guide cylinder (41) is vertically and coaxially installed in the clamping hole of the supporting circular clamp (3); the guide rod (42) is coaxially and slidably installed in the inner hole of the guide cylinder (41); the upper end surface of the guide rod (42) is connected to the top surface of the guide cylinder (41) through the limiting structure, which is used to limit the guide rod (42) from falling off downward. The guide cylinder (41) is extended outward, and an oilstone clamping plate (43) is fixed to the lower end surface of the guide rod (42); the oilstone clamping plate (43) is used to clamp the oilstone (5); the spring (44) is coaxially sleeved on the guide rod (42), one end of the spring (44) is against the lower end surface of the guide cylinder (41), and the other end is against the top surface of the oilstone clamping plate (43); the pressure of the spring (44) is set according to the grinding pressure requirement of the bearing ring (6) to be processed on the oilstone (5).

2. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The adapter plate (2) is an L-shaped plate, one side of which is in parallel contact with the horizontal slide (12). The side is provided with a strip-shaped mounting hole (21) for passing a bolt through the side of the adapter plate so as to be mounted in an adjustable position with the horizontal slide (12); and the other side is provided with a threaded hole (22) at the center of the side for mounting a supporting circular card (3).

3. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The supporting circular clamp (3) is formed by docking a left semicircular clamp (31) and a right semicircular clamp (32); the left semicircular clamp (31) is fixedly connected to the threaded hole (22) of the adapter plate (2) by a first bolt (33); the right semicircular clamp (32) and the left semicircular clamp (31) are fixedly connected by a second bolt (34); a through hole with an elliptical cross section is formed at the center of the docked supporting circular clamp (3) as a clamping hole for installing the guide cylinder; the axis of the clamping hole of the supporting circular clamp is parallel to the vertical slide (11).

4. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The main body of the guide cylinder (41) is a hollow cylindrical structure, and its outer diameter contacts the inner wall of the clamping hole of the supporting circular clamp (3); both ends of the guide cylinder (41) are provided with a limit platform (411), and the limit platform (411) is used to limit the axial displacement of the guide cylinder (41) in the clamping hole of the supporting circular clamp (3).

5. The self-adjustable grinding machine oilstone pressure mechanism according to claim 4, characterized in that: The guide rod (42) is cylindrical and is clearance-matched with the inner hole of the guide cylinder (41).

6. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The limiting structure comprises a gasket (45) and an adjusting bolt (46); the gasket (45) is horizontally placed on the upper end surface of the guide cylinder (41); a through hole is provided at the center of the gasket (45); the rod of the adjusting bolt (46) passes through the through hole of the gasket (45) and is threadedly connected to the top end of the guide rod (42); the head diameter of the adjusting bolt (46) is larger than the through hole diameter of the gasket (45); and the outer diameter of the gasket (45) is larger than the hole diameter of the guide cylinder (41).

7. The self-adjustable grinding machine oilstone pressure mechanism according to claim 6, characterized in that: The top end of the guide rod (42) is clearance-matched with the lower end surface of the gasket (45).

8. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The spring (44) is a constant pressure spring, the pressure value range of the spring (44) is 20N-50N, and the spring pressures of two adjacent pressure values ​​increase by 0.5N.

9. The self-adjustable grinding machine oilstone pressure mechanism according to claim 1, characterized in that: The oilstone clamping plate (43) comprises a top plate (431) and two side plates (432); the top plate (431) is horizontally fixed to the lower end surface of the guide rod (42); the two side plates (432) are arranged in parallel and vertically installed on the bottom surface of the top plate (431); the oilstone (5) is vertically inserted between the two side plates (432); one of the side plates (432) is provided with a plurality of threaded holes for passing fastening bolts (47) to fix the position of the oilstone (5).

Images