A high-precision grinding machine for machining bearing rings

Abstract

The present invention relates to a high-precision grinding machine for machining bearing rings, which relates to the field of mechanical machining. The grinding machine comprises a grinding seat and a grinding mechanism for grinding the bearing rings, a positioning mechanism for positioning and installing the bearing rings, a wax circulation mechanism for controlling wax circulation and filling the gap between the bottom surface of the bearing ring and the positioning mechanism with wax to reinforce the inner and outer walls of the bearing rings, and a solid-liquid conversion mechanism for controlling the conversion of wax between liquid and solid forms. The grinding seat is provided with a machining groove for injecting and containing liquid wax, and the positioning mechanism is coaxially arranged at the bottom of the machining groove. When the bearing ring is positioned on the positioning mechanism, the liquid wax solidifies into solid wax under the control of the solid-liquid conversion mechanism along the circumference of the bearing ring and in the gap between the bottom surface of the bearing ring and the positioning mechanism to secure the bearing ring. This application has the effect of improving the precision of bearing machining.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing, in particular to a high-precision grinding machine for processing bearing rings. Background Art

[0002] Bearing grinders are high-precision grinders specially used for machining key parts of bearing rings, such as raceways, ribs, inner and outer diameters. The machining quality directly affects the rotation accuracy, lifespan, and noise performance of the bearings.

[0003] When grinding the plane of the bearing ring, the bearing grinder in the existing technology usually adopts the magnetic disk adsorption method to adsorb the lower surface of the bearing ring on the work station for fixation, and then the grinding wheel grinds the upper surface, and then turns it over and grinds it. However, since the bearing ring is deformed after quenching, especially the end face of the thin series ring is warped, if the lower surface is directly adsorbed at this time, the uneven part will be deformed. When the upper surface grinding is completed and the magnetic force is released, the internal stress is released, the elastic deformation is restored, and the plane becomes warped again, thereby affecting the plane accuracy and ultimately affecting the bearing accuracy. Summary of the Invention

[0004] In order to improve the precision of bearing processing, the present invention provides a high-precision grinding machine for processing bearing rings.

[0005] The present invention provides a high-precision grinding machine for machining bearing rings, which adopts the following technical solutions:

[0006] A high-precision grinding machine for machining bearing rings, comprising a grinding seat and a grinding mechanism for grinding the bearing rings, and further comprising:

[0007] Positioning mechanism, used for positioning and installing the bearing ring;

[0008] A wax circulation mechanism is used to control the circulation of wax liquid, fill the gap between the bottom surface of the bearing ring and the positioning mechanism with wax liquid, and reinforce the inner and outer walls of the bearing ring;

[0009] A solid-liquid conversion mechanism, used to control the conversion of wax between liquid and solid forms;

[0010] The grinding seat is provided with a processing groove for injecting and containing liquid wax, and the positioning mechanism is coaxially arranged at the bottom of the processing groove. When the bearing ring is positioned on the positioning mechanism, the liquid wax solidifies into solid wax in the circumference of the bearing ring and in the gap between the bottom surface of the bearing ring and the positioning mechanism under the control of the solid-liquid conversion mechanism to fix the bearing ring.

[0011] By adopting the above technical solution, when processing the bearing ring, the bearing ring is first positioned by the positioning mechanism, and then the liquid wax is injected into the processing tank by the wax circulation mechanism, and then the liquid wax is cooled by the solid-liquid conversion mechanism to form solid wax to provide uniform support for the bottom surface of the bearing ring, and the inner and outer walls of the bearing ring are fixed, so that the bearing ring is not easily affected by uneven surfaces when fixed, thereby improving the processing accuracy of end face grinding, and effectively solving the problem of end face grinding of thin-walled bearing rings and warped parts.

[0012] Optionally, the positioning mechanism includes:

[0013] A positioning seat, fixedly mounted on the processing groove;

[0014] Positioning sliders, radially telescopically mounted on the positioning seat and distributed circumferentially;

[0015] A driving member, mounted on the positioning seat, for driving the positioning slider to slide;

[0016] A driving cavity is coaxially opened at the center position of the positioning seat, and the driving member includes a driving part rotatably mounted in the driving cavity and a driven part connected to the driving part; the driven part has a spiral guide rail, and the positioning slider has a track groove that cooperates with the spiral guide rail.

[0017] Optionally, the wax circulation mechanism includes:

[0018] a liquid storage tank, located at the bottom of the processing tank, for storing liquid wax;

[0019] A wax injection head, located in the processing tank, for injecting liquid wax into the processing tank;

[0020] a liquid outlet pump connected between the liquid storage tank and the wax injection head, and used for pumping the liquid wax in the liquid storage tank into the wax injection head;

[0021] a liquid return pipe connected to the liquid storage tank and used for returning the liquid wax in the processing tank to the liquid storage tank;

[0022] The inner bottom surface of the processing tank is provided with a liquid return hole connected with the liquid return pipe; the wax injection head is circumferentially provided with wax spray holes for spraying liquid wax.

[0023] Optionally, the wax injection head is located in the driving cavity, and the wax spray hole is eccentrically inclined; the driving member has a driving blade on the circumference of the inner wall of the driving part, and the wax spray hole is opposite to the driving blade to drive the driving member to rotate when spraying wax.

[0024] By adopting the above technical solution, when the wax injection head sprays liquid wax into the processing tank, since the wax spray hole is directly opposite to the driving blade, the liquid wax sprayed by the wax injection head can drive the positioning slider of the positioning mechanism to extend and retract, thereby replacing the function of the motor, so that the positioning mechanism can be driven without a motor.

[0025] Moreover, when the liquid wax solidifies into solid wax in the driving cavity, the solid wax and the driving leaf are limited, so that the positioning slider is not easy to retract during the bearing ring processing, and the bearing ring can always be positioned and supported.

[0026] Optionally, the liquid return hole includes a first liquid return hole and a second liquid return hole, the first liquid return hole is located outside the positioning seat, and the second liquid return hole is located inside the driving cavity; the first liquid return hole and the second liquid return hole are both connected to the liquid return pipe through a liquid return valve;

[0027] When the positioning slider extends out of the positioning seat, the positioning slider covers the first liquid return hole;

[0028] The positioning seat is provided with a liquid conducting channel on the circumferential direction of the inner wall of the driving cavity, which passes through to the outside. The liquid conducting channel is opened obliquely downward toward the outside of the positioning seat, and the entrance of the liquid conducting channel is located above the driving member.

[0029] By adopting this technical solution, the inlet of the liquid guide channel is positioned above the driver. When wax is injected into the driver cavity, it first completely fills the driver's area, then flows through the liquid guide channel to the outside of the positioning mechanism to secure the bearing ring. As the liquid wax solidifies into solid wax, the driver remains completely covered by the wax, effectively securing the driver and the fixed wax.

[0030] Optionally, the solid-liquid conversion mechanism includes a heating tube for heating the solid wax to convert it into liquid wax and a refrigeration tube for cooling the liquid wax to convert it into solid wax;

[0031] A heating chamber is formed between the processing tank and the liquid storage tank, and the heating pipe is located in the heating chamber;

[0032] The outer peripheral wall of the processing tank is provided with a refrigeration chamber, and the refrigeration pipe is located in the refrigeration chamber.

[0033] By adopting the above technical solution, the heating chamber is located below the processing tank, allowing hot air to naturally rise and melt the solid wax in the processing tank, while the cooling chamber is located around the processing tank, allowing cold air to naturally sink and cool and solidify the liquid wax in the processing tank.

[0034] In addition, the heating chamber is arranged between the processing tank and the liquid storage tank. The heating pipe can always keep the wax in the liquid storage tank warm, so that it is always in liquid state, which makes it easy to directly extract the liquid wax from the liquid storage tank without waiting.

[0035] Optionally, the solid-liquid conversion mechanism further includes a first heat preservation component and a second heat preservation component;

[0036] The first insulation component is arranged between the refrigeration pipe and the outer peripheral wall of the processing tank and is used to isolate the cold air from the refrigeration pipe; the first insulation component includes a first insulation inner plate fixedly arranged in the refrigeration chamber and a first insulation outer plate rotatably arranged in the refrigeration chamber, and the first insulation inner plate and the first insulation outer plate are both circumferentially penetrated by a cold air groove;

[0037] The second insulation component is arranged between the heating tube and the bottom of the processing tank and is used to isolate the hot air from the heating tube; the second insulation component includes a second insulation inner plate fixedly arranged in the heating chamber and a second insulation outer plate rotatably arranged in the heating chamber, and the second insulation inner plate and the second insulation outer plate are both circumferentially penetrated by a hot air groove.

[0038] By adopting the above technical solution and setting up the first insulation component and the second insulation component, the refrigeration pipe and the heating pipe will not directly control the wax in the processing tank, but can control the timing of heating or cooling the wax.

[0039] Optionally, the solid-liquid conversion mechanism further includes a switching motor, an output end of the switching motor is connected to a bevel gear; the first heat-insulating outer plate has a first gear portion, and the second heat-insulating outer plate has a second gear portion; the bevel gear connects the first gear portion and the second gear portion;

[0040] The solid-liquid conversion mechanism has a cold source state and a hot source state; when in the cold source state, the cold air groove of the first insulation component is facing, and the hot air groove of the second insulation component is misplaced; when in the hot source state, the cold air groove of the first insulation component is misplaced, and the hot air groove of the second insulation component is facing.

[0041] By adopting this technical solution, the first and second insulation assemblies are synchronously controlled by switching motors, preventing the cooling pipe and the heating pipe from simultaneously controlling the wax in the processing tank. When in the cooling state, the hot air from the heating pipe is sealed, making it less likely to affect the solid wax. When in the heating state, the cold air from the cooling pipe is sealed, making it less likely to affect the liquid wax.

[0042] Optionally, the positioning mechanism also includes a drive cover installed on the top of the positioning seat and used to cover the bottom of the drive cavity, and a connecting plate rotatably installed on the top of the drive cavity; the driving member has a connecting column, and the connecting column is snap-fitted with the connecting plate to drive the positioning slider to retract when the drive cover is removed.

[0043] Optionally, a sliding cover is symmetrically and slidingly installed on the top of the grinding seat to cover the processing groove.

[0044] By adopting the above technical solution, after the processing tank is covered by the sliding cover, the cold air from the refrigeration pipe can be sealed in the processing tank, improving the cooling and solidification effect of the refrigeration pipe on the liquid wax. In addition, the sliding cover can block some of the debris generated by grinding the bearing ring, preventing it from entering the processing tank.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] A high-precision grinding machine for machining bearing rings. When machining the bearing rings, the bearing rings are first positioned by a positioning mechanism, liquid wax is then injected into a machining tank by a wax circulation mechanism, and the liquid wax is then cooled by a solid-liquid conversion mechanism to form solid wax to provide uniform support for the bottom surface of the bearing rings. The inner and outer walls of the bearing rings are also fixed, making the bearing rings less susceptible to uneven surfaces during fixation. This improves the machining accuracy of end face grinding and effectively solves the problem of grinding the end faces of thin-walled bearing rings and warped parts.

[0047] When the wax injection head sprays liquid wax into the processing tank, the liquid wax sprayed by the wax injection head can drive the positioning slider of the positioning mechanism to extend and retract, thereby replacing the function of the motor, so that the positioning mechanism can be driven without a motor; and when the liquid wax solidifies into solid wax in the driving cavity, the solid wax and the driving blade are limited, so that the positioning slider is not easy to retract during the bearing ring processing process, and can always position and support the bearing ring;

[0048] The heating chamber is located below the processing tank, so that the hot air can naturally rise to melt the solid wax in the processing tank, and the refrigeration chamber is located on the side of the processing tank, so that the cold air can naturally sink to cool and solidify the liquid wax in the processing tank; and by arranging the first insulation component, the second insulation component and the switching motor, the refrigeration pipe and the heating pipe will not control the wax in the processing tank at the same time; when in the cold source state, the hot air of the heating pipe is sealed and not easy to affect the solid wax; when in the heat source state, the cold air of the refrigeration pipe is sealed and not easy to affect the liquid wax. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the overall structure of a high-precision grinder for machining bearing rings according to an embodiment of the present application;

[0050] Figure 2 is a cross-sectional view of a high-precision grinder for machining bearing rings according to an embodiment of the present application;

[0051] Figure 3 is a cross-sectional view of a positioning mechanism according to an embodiment of the present application;

[0052] Figure 4 is a cross-sectional view of a wax circulation mechanism according to an embodiment of the present application;

[0053] Figure 5 This is a schematic diagram of a state in which the wax injection head drives the driving member to rotate according to an embodiment of the present application;

[0054] Figure 6 is a cross-sectional view of the solid-liquid conversion mechanism of an embodiment of the present application;

[0055] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0056] The parts designated by the numbers in the above drawings are as follows: 1. Grinding seat; 11. Processing tank; 12. Refrigeration chamber; 13. Heating chamber; 14. Material reduction hole; 2. Grinding mechanism; 3. Positioning mechanism; 31. Positioning seat; 311. Driving chamber; 312. Liquid guide channel; 32. Positioning slider; 321. Positioning part; 322. Track groove; 33. Driving member; 331. Driving part; 332. Driven part; 333. Spiral guide rail; 334. Driving blade; 335. Connecting column; 34. Driving cover; 35. Connecting plate; 4. Wax circulation mechanism; 41. Liquid storage tank; 42. Wax injection head ; 421. Wax spray hole; 43. Liquid outlet pump; 44. Liquid return pipe; 45. Liquid return valve; 46. Liquid return hole; 461. First liquid return hole; 462. Second liquid return hole; 5. Solid-liquid conversion mechanism; 51. Heating pipe; 52. Refrigeration pipe; 53. First insulation component; 531. First insulation inner plate; 532. First insulation outer plate; 533. Cold air trough; 534. First gear part; 54. Second insulation component; 541. Second insulation inner plate; 542. Second insulation outer plate; 543. Hot air trough; 544. Second gear part; 55. Switching motor; 56. Bevel gear; 6. Sliding cover. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0058] An embodiment of the present application discloses a high-precision grinder for machining bearing rings.

[0059] Reference Figure 1 and Figure 2A high-precision grinding machine for processing bearing rings includes a grinding base 1, a grinding mechanism 2, a positioning mechanism 3, a wax circulation mechanism 4, and a solid-liquid conversion mechanism 5. The grinding mechanism 2, the positioning mechanism 3, the wax circulation mechanism 4, and the solid-liquid conversion mechanism 5 are all arranged on the grinding base 1. The positioning mechanism 3 is used to position and install the bearing ring. The wax circulation mechanism 4 is used to control the circulation of wax liquid and reinforce the inner and outer walls of the bearing ring through the wax liquid. The solid-liquid conversion mechanism 5 is used to control the conversion of wax between liquid and solid forms. The grinding mechanism 2 is used to grind the top of the bearing ring that has been fixed by solid wax.

[0060] When processing the bearing ring, the bearing ring is first positioned by the positioning mechanism 3, then liquid wax is injected through the wax circulation mechanism 4, and then the liquid wax is cooled to form solid wax through the solid-liquid conversion mechanism 5 to fix the inner and outer walls of the bearing ring, and finally the top of the bearing ring is ground by the grinding mechanism 2.

[0061] The top of the grinding seat 1 is recessed to form a machining groove 11, which is a thick, open-top cylinder. The grinding mechanism 2 is fixed to the top of the grinding seat 1 and has a disc-shaped grinding head located above and coaxial with the machining groove 11.

[0062] Reference Figure 2 and Figure 3 The positioning mechanism 3 is installed on the inner bottom surface of the processing groove 11, and includes a positioning seat 31, a positioning slider 32, a driving member 33, a driving cover 34 and a connecting plate 35.

[0063] The positioning seat 31 is annular, with a drive cavity 311 coaxially extending through its center and extending from top to bottom. Multiple positioning sliders 32 are evenly distributed around the circumference of the positioning seat 31 and are mounted horizontally and telescopically on the positioning seat 31. The end of the positioning slider 32, facing away from the positioning seat 31, has a locating portion 321 for positioning the bearing ring.

[0064] The driving member 33 comprises a driving portion 331 and a driven portion 332. The driving portion 331 is cylindrical and rotatably mounted within the driving cavity 311, engaging the inner wall of the driving cavity 311. The driven portion 332 is disc-shaped and integrally connected to the bottom of the driving portion 331, rotating synchronously with the driving portion 331.

[0065] The top of the driven portion 332 has a spiral guide rail 333, and the bottom of the positioning slider 32 has a track groove 322 that cooperates with the spiral guide rail 333. The positioning slider 32 can move and retract radially on the driven portion 332 through the cooperation between the track groove 322 and the spiral guide rail 333. When the driving member 33 rotates, the positioning slider 32 can radially retract and retract on the positioning seat 31, thereby positioning and installing the bearing ring.

[0066] The drive cover 34 is fixedly mounted on the top of the positioning base 31 and covers the drive cavity 311. The connecting plate 35 is rotatably mounted on the top of the drive cavity 311 and is located below the drive cover 34. The top of the driving member 33 has a connecting post 335 with a polygonal cross-section. The connecting post 335 engages with the bottom surface of the connecting plate 35.

[0067] After opening the drive cover 34, by rotating the connecting plate 35, the connecting plate 35 can drive the driving member 33 to rotate, thereby driving the positioning slider 32 to move radially, so that the positioning slider 32 extends or resets. In this embodiment, the main function of the drive cover 34 and the connecting plate 35 is to control the reset of the positioning slider 32.

[0068] Reference Figure 2 and Figure 4 The wax circulation mechanism 4 includes a liquid storage tank 41, a wax injection head 42, a liquid discharge pump 43, a liquid return pipe 44, and a liquid return valve 45. The liquid storage tank 41 is arranged below the processing tank 11 and is used to store liquid wax. The liquid discharge pump 43 is connected between the liquid storage tank 41 and the wax injection head 42. The wax injection head 42 extracts liquid wax from the liquid storage tank 41 through the liquid discharge pump 43 and sprays it into the processing tank 11. The liquid return pipe 44 is connected to the liquid storage tank 41, and the liquid return valve 45 is located on the liquid return pipe 44. It is used to extract the liquid wax in the processing tank 11 back to the liquid storage tank 41.

[0069] The wax injection head 42 is vertically extended upward from the bottom of the processing tank 11 into the processing tank 11, and the wax injection head 42 is located in the driving cavity 311 of the positioning mechanism 3. The wax injection head 42 is provided with a plurality of wax injection holes 421 in the circumference.

[0070] Reference Figure 2 and Figure 5 , the wax spray hole 421 does not point to the central axis of the wax injection head 42, but is eccentrically inclined. In this embodiment, a driving blade 334 is circumferentially provided on the inner wall of the driving portion 331 of the driving member 33. The driving blade 334 does not point to the central axis of the driving member 33, but is inclined. The surface of the driving blade 334 is opposite to the wax spray hole 421 of the wax injection head 42, so that when the wax injection head 42 sprays liquid wax, the liquid wax can be directly sprayed on the driving blade 334. When the wax injection head 42 injects liquid wax into the processing tank 11, the liquid wax sprayed from the wax spray hole 421 can drive the driving member 33 to rotate, thereby driving the positioning slider 32 to extend.

[0071] Reference Figure 2 、 Figure 3 and Figure 4The positioning seat 31 has a liquid guide channel 312 formed circumferentially on the inner wall of the driving cavity 311. The liquid guide channel 312 is used to transport the liquid wax injected into the driving cavity 311 to the outside of the positioning seat 31, thereby filling the processing groove 11. The liquid guide channel 312 penetrates the inner and outer surfaces of the positioning seat 31 and is opened downwardly and obliquely toward the outside of the positioning seat 31.

[0072] The entrance of the liquid-conducting channel 312 is located above the driver 33. As liquid wax is injected into the driver cavity 311, the wax level gradually rises, causing the positioning slider 32 of the positioning mechanism 3 to extend and retract to position the bearing ring. Once the bearing ring is positioned, the wax level continues to rise, submerging the driver 33 and reaching the entrance of the liquid-conducting channel 312. At this point, the wax begins to flow through the liquid-conducting channel 312 toward the exterior of the positioning seat 31. At this point, the driver cavity 311 remains filled with liquid wax. As the liquid wax solidifies, the solid wax forms a tight bond with the driver 33.

[0073] In this embodiment, a return hole 46 for recovering liquid wax is provided on the inner bottom surface of the processing tank 11, and the return hole 46 includes a first return hole 461 and a second return hole 462. The first return hole 461 is located outside the positioning seat 31, and the second return hole 462 is located within the drive chamber 311. Multiple return holes 461 and 462 are provided circumferentially. The first return hole 461 and the second return hole 462 are both connected to the return valve 45 and communicate with the liquid storage tank 41 via the return valve 45 and the return pipe 44. A filter screen is provided in each of the first return hole 461 and the second return hole 462 for filtering processing debris.

[0074] When the positioning slider 32 extends out of the positioning seat 31 under the drive of the driving member 33, the positioning slider 32 is at the top of the first liquid return hole 461 and covers the first liquid return hole 461, so that the liquid wax flowing out of the liquid guide channel 312 is not easy to flow into the first liquid return hole 461.

[0075] Furthermore, the connection port of the return liquid pipe 44 and the liquid storage tank 41 is above the connection port of the liquid outlet pump 43 and the liquid storage tank 41, and the two are respectively located on both sides of the liquid storage tank 41. When the liquid wax returns to the liquid storage tank 41 from the return liquid pipe 44, the liquid wax can sink and bypass the liquid storage tank 41 and leave from the liquid outlet pump 43, so that the liquid wax can be evenly mixed in the liquid storage tank 41.

[0076] Reference Figure 2 and Figure 6In this embodiment, the solid-liquid conversion mechanism 5 includes a heating tube 51, a cooling tube 52, a first insulation component 53, a second insulation component 54 and a switching motor 55. The cooling tube 52 can generate cold air, which is used to cool the liquid wax after the liquid wax fills the processing tank 11 to solidify it into solid wax. The heating tube 51 can generate hot air, which is used to heat the solid wax in the processing tank 11 after the bearing ring is processed to melt it into liquid wax, so that the liquid wax can be recovered into the liquid storage tank 41. The first insulation component 53 is used to isolate the cold air, and the second insulation component 54 is used to isolate the hot air. Through the two, the heating tube 51 and the cooling tube 52 will not act on the processing tank 11 at the same time.

[0077] The outer wall of the processing tank 11 has a refrigeration chamber 12, and the refrigeration pipe 52 is located in the refrigeration chamber 12. It is a water pipe wound in a spiral shape and is supplied with cooling by an external cold source. The first insulation component 53 is located between the refrigeration pipe 52 and the peripheral side wall of the processing tank 11. The first insulation component 53 includes a first insulation inner plate 531 and a first insulation outer plate 532, both of which are cylindrical and made of insulation material. The first insulation inner plate 531 is fixedly installed in the refrigeration chamber 12, while the first insulation outer plate 532 is rotatably installed in the refrigeration chamber 12. The inner wall of the first insulation outer plate 532 is in contact with the outer wall of the first insulation inner plate 531, and both are circumferentially penetrated with a cold air groove 533. When the cold air grooves 533 of the two are facing each other, the cold air from the refrigeration pipe 52 can affect the groove wall of the processing tank 11 through the cold air groove 533, thereby cooling the liquid wax in the processing tank 11. When the cold air slots 533 of the two are misaligned, the cold air of the refrigeration pipe 52 cannot pass through the first heat-insulating inner plate 531 and the first heat-insulating outer plate 532 .

[0078] A heating chamber 13 is provided between the bottom of the processing tank 11 and the top of the liquid storage tank 41, and a heating tube 51 is provided in the heating chamber 13, which is powered by a power supply to generate heat. A second heat-insulating component 54 is provided between the heating tube 51 and the bottom of the processing tank 11, and the second heat-insulating component 54 includes a second heat-insulating inner plate 541 and a second heat-insulating outer plate 542, both of which are disc-shaped and made of heat-insulating material. The second heat-insulating inner plate 541 is fixedly mounted in the heating chamber 13, while the second heat-insulating outer plate 542 is rotatably mounted in the heating chamber 13. The second heat-insulating outer plate 542 is fitted with the second heat-insulating inner plate 541, and both are circumferentially provided with a hot air groove 543. When the hot air grooves 543 of the two are facing each other, the hot air from the heating tube 51 can affect the bottom of the processing tank 11 through the heating tube 51, thereby heating and melting the solid wax in the processing tank 11. When the hot air grooves 543 of the two are misaligned, the hot air from the heating pipe 51 cannot pass through the second heat-insulating inner plate 541 and the second heat-insulating outer plate 542 .

[0079] Reference Figure 7The switching motor 55 is used to control the switching between the heating tube 51 and the cooling tube 52. The output end of the switching motor 55 is connected to the bevel gear 56. The bottom of the first insulation outer plate 532 has a first gear portion 534, and the peripheral end of the second insulation outer plate 542 has a second gear portion 544. The first gear portion 534 and the second gear portion 544 can simultaneously engage with the bevel gear 56. When the switching motor 55 is in operation, the switching motor 55 can simultaneously drive the first insulation outer plate 532 and the second insulation outer plate 542 to rotate via the bevel gear 56, thereby switching between the cooling source state and the heating source state.

[0080] Reference Figure 2 、 Figure 6 and Figure 7 When in the cold source state, the cold air grooves 533 of the first insulation component 53 are all facing each other, while the hot air grooves 543 of the second insulation component 54 are all staggered, so that the cold air of the refrigeration pipe 52 can affect the processing tank 11 through the cold air grooves 533, while the hot air of the heating pipe 51 is enclosed in the heating chamber 13.

[0081] When in the heat source state, the hot air grooves 543 of the second insulation component 54 are all facing each other, while the cold air grooves 533 of the first insulation component 53 are all staggered, so that the hot air of the heating tube 51 can affect the processing tank 11 through the hot air grooves 543, while the cold air of the refrigeration tube 52 is enclosed in the refrigeration chamber 12.

[0082] When the bearing ring is installed in the processing tank 11 and the processing tank 11 is filled with liquid wax, the switching motor 55 controls the device to the cold source state. At this time, the liquid wax cools down and solidifies to form solid wax, thereby fixing the bearing ring. When the bearing ring is processed and removed from the processing tank 11, the switching motor 55 controls the device to the heat source state. At this time, the solid wax melts when heated and circulates through the wax circulation mechanism 4.

[0083] In this embodiment, when the equipment is running, the heating tube 51 and the cooling tube 52 are always in operation, and the cold source state and the heat source state are switched only by switching the motor 55, thereby heating or cooling the wax in the processing tank 11.

[0084] Reference Figure 2 Furthermore, to reduce the thickness of the circumferential sidewalls of the machining groove 11 and facilitate cooling of the liquid wax in the machining groove 11 by the refrigeration pipe 52, a reduction hole 14 is formed in the circumferential inner wall of the machining groove 11. The reduction hole 14 does not penetrate the machining groove 11. Furthermore, after the reduction hole 14 is formed, if the liquid wax in the machining groove 11 solidifies into solid wax, a portion of the solid wax can enter the reduction hole 14, thereby achieving a tighter connection between the solid wax and the machining groove 11, and better fixing the bearing ring to the solid wax.

[0085] Reference Figure 1Furthermore, when in the cold source state, to enhance the cooling effect, a sliding cover 6 is symmetrically mounted on the top of the grinding base 1. The sliding cover 6 abuts the outer wall of the bearing ring, thereby partially covering the processing groove 11, allowing the cold air to fully cool the liquid wax. Furthermore, the sliding cover 6 blocks some of the debris generated during the bearing ring processing, preventing excessive debris from falling into the processing groove 11.

[0086] Combine Figures 1 to 7 The high-precision grinding machine for machining bearing rings according to an embodiment of the present application operates as follows: When machining a bearing ring, liquid wax is injected into the drive chamber 311 via the wax injection head 42. The liquid wax drives the positioning slider 32 to extend and retract horizontally, thereby positioning and installing the bearing ring. When the drive chamber 311 is filled with liquid wax, it flows out through the liquid guide channel 312 and fills the machining tank 11. When the machining tank 11 is filled with liquid wax, the motor 55 is switched to a cold source state. The cold air pipe cools the liquid wax in the machining tank 11 through the cold air groove 533, causing it to solidify and secure the bearing ring. After the bearing ring is secured, the motor 55 is switched to a hot source state. The hot air pipe heats the solid wax in the machining tank 11 through the hot air groove 543, causing it to melt. The melted wax is then recovered into the liquid storage tank 41.

[0087] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-precision grinding machine for machining bearing rings, comprising a grinding seat (1) and a grinding mechanism (2) for grinding the bearing rings, characterized in that: Also includes: A positioning mechanism (3) for positioning and installing the bearing ring; A wax circulation mechanism (4) is used to control the circulation of wax liquid, fill the gap between the bottom surface of the bearing ring and the positioning mechanism (3) with the wax liquid, and is used to reinforce the inner and outer walls of the bearing ring; A solid-liquid conversion mechanism (5) is used to control the conversion of the wax between liquid and solid forms; The grinding seat (1) is provided with a processing groove (11) for injecting and holding liquid wax, and the positioning mechanism (3) is coaxially arranged at the bottom of the processing groove (11). When the bearing ring is positioned on the positioning mechanism (3), the liquid wax solidifies into solid wax in the circumference of the bearing ring and in the gap between the bottom surface of the bearing ring and the positioning mechanism (3) under the control of the solid-liquid conversion mechanism (5) to fix the bearing ring; The positioning mechanism (3) comprises: A positioning seat (31) is fixedly mounted on the processing groove (11); A positioning slider (32) is radially telescopically mounted on the positioning seat (31) and distributed circumferentially; A driving member (33) is mounted on the positioning seat (31) and is used to drive the positioning slider (32) to slide; A driving cavity (311) is coaxially formed at the center of the positioning seat (31), and the driving member (33) includes a driving portion (331) rotatably mounted on the driving cavity (311) and a driven portion (332) connected to the driving portion (331); the driven portion (332) has a spiral guide rail (333), and the positioning slider (32) has a track groove (322) that cooperates with the spiral guide rail (333); The wax circulation mechanism (4) comprises: A liquid storage tank (41), located at the bottom of the processing tank (11), for storing liquid wax; A wax injection head (42), located in the processing tank (11), for injecting liquid wax into the processing tank (11); a liquid outlet pump (43), connected between the liquid storage tank (41) and the wax injection head (42), and used for pumping the liquid wax in the liquid storage tank (41) into the wax injection head (42); a liquid return pipe (44), connected to the liquid storage tank (41), for returning the liquid wax in the processing tank (11) to the liquid storage tank (41); The inner bottom surface of the processing tank (11) is provided with a liquid return hole (46) connected to the liquid return pipe (44); the wax injection head (42) is circumferentially provided with wax injection holes (421) for spraying liquid wax; The wax injection head (42) is located in the driving cavity (311), and the wax spray hole (421) is eccentrically inclined. The driving member (33) has a driving blade (334) on the circumference of the inner wall of the driving portion (331), and the wax spray hole (421) is opposite to the driving blade (334) to drive the driving member (33) to rotate when spraying wax. The liquid return hole (46) includes a first liquid return hole (461) and a second liquid return hole (462), wherein the first liquid return hole (461) is located outside the positioning seat (31), and the second liquid return hole (462) is located inside the driving cavity (311); the first liquid return hole (461) and the second liquid return hole (462) are both connected to the liquid return pipe (44) via a liquid return valve (45); When the positioning slider (32) extends out of the positioning seat (31), the positioning slider (32) covers the first liquid return hole (461); The positioning seat (31) is provided with a liquid guide channel (312) extending to the outside on the inner wall of the driving cavity (311). The liquid guide channel (312) is opened obliquely downward toward the outside of the positioning seat (31), and the entrance of the liquid guide channel (312) is located above the driving member (33).

2. A high-precision grinding machine for machining bearing rings according to claim 1, characterized in that: The solid-liquid conversion mechanism (5) comprises a heating tube (51) for heating the solid wax to convert it into liquid wax and a cooling tube (52) for cooling the liquid wax to convert it into solid wax. A heating chamber (13) is formed between the processing tank (11) and the liquid storage tank (41), and the heating pipe (51) is located in the heating chamber (13); The outer peripheral wall of the processing tank (11) has a refrigeration chamber (12), and the refrigeration pipe (52) is located in the refrigeration chamber (12).

3. A high-precision grinding machine for machining bearing rings according to claim 2, characterized in that: The solid-liquid conversion mechanism (5) further includes a first heat preservation component (53) and a second heat preservation component (54); The first heat-insulating component (53) is arranged between the refrigeration pipe (52) and the outer peripheral wall of the processing tank (11) and is used to isolate the cold air from the refrigeration pipe (52); the first heat-insulating component (53) includes a first heat-insulating inner plate (531) fixedly arranged in the refrigeration chamber (12) and a first heat-insulating outer plate (532) rotatably arranged in the refrigeration chamber (12); the first heat-insulating inner plate (531) and the first heat-insulating outer plate (532) are both circumferentially penetrated by a cold air groove (533); The second heat-insulating component (54) is arranged between the heating tube (51) and the bottom of the processing tank (11) and is used to isolate the hot air from the heating tube (51); the second heat-insulating component (54) includes a second heat-insulating inner plate (541) fixedly arranged in the heating chamber (13) and a second heat-insulating outer plate (542) rotatably arranged in the heating chamber (13); the second heat-insulating inner plate (541) and the second heat-insulating outer plate (542) are both circumferentially penetrated by a hot air groove (543).

4. A high-precision grinding machine for machining bearing rings according to claim 3, characterized in that: The solid-liquid conversion mechanism (5) further includes a switching motor (55), the output end of the switching motor (55) being connected to a bevel gear (56); the first heat-insulating outer plate (532) having a first gear portion (534), and the second heat-insulating outer plate (542) having a second gear portion (544); the bevel gear (56) connecting the first gear portion (534) and the second gear portion (544); The solid-liquid conversion mechanism (5) has a cold source state and a hot source state; when in the cold source state, the cold air groove (533) of the first heat-insulating component (53) is aligned, and the hot air groove (543) of the second heat-insulating component (54) is misaligned; when in the hot source state, the cold air groove (533) of the first heat-insulating component (53) is misaligned, and the hot air groove (543) of the second heat-insulating component (54) is aligned.

5. The high-precision grinding machine for machining bearing rings according to claim 1, characterized in that: The positioning mechanism (3) further comprises a driving cover (34) mounted on the top of the positioning seat (31) and used to cover the bottom of the driving cavity (311), and a connecting plate (35) rotatably mounted on the top of the driving cavity (311); the driving member (33) has a connecting column (335), and the connecting column (335) is engaged with the connecting plate (35) to drive the positioning slider (32) to retract when the driving cover (34) is removed.

6. A high-precision grinding machine for machining bearing rings according to claim 1, characterized in that: A sliding cover (6) is symmetrically and slidingly installed on the top of the grinding seat (1) to cover the processing groove (11).

Images