A preparation and sharpening method of a metal bond grinding disc and a sharpening device

Abstract

The invention relates to the technical field of grinding disc preparation and sharpening, and specifically to a method for preparing and sharpening a metal bond grinding disc and a sharpening device. In the method for preparing and sharpening a metal bond grinding disc of the invention, the metal bond grinding disc is divided into two ring widths, the outer ring width is coarse-grained diamond, and the inner ring width is fine-grained diamond. Low-melting-point substances are added in a reducing atmosphere process to ensure sintering density. After sintering, high-pressure and low-temperature cooling is adopted. The cooled grinding disc is clamped by a rotatable clamp and placed under a sharpening device. The grinding edge of the grinding disc is processed to optimize the edge shape of the grinding disc so that the grinding disc provides a smoother surface processing effect. The prepared metal bond grinding disc can improve the cutting efficiency during grinding to a certain extent after the sharpening treatment, and the sharp grinding disc can disperse the heat generated during the grinding process, reduce the wear rate of the grinding disc, and thus extend its service life.

Description

Technical Field

[0001] The invention relates to the technical field of grinding disc preparation and sharpening, and in particular to a method for preparing and sharpening a metal bond grinding disc and a sharpening device. Background Art

[0002] At present, there are two types of grinding discs for cultured diamonds, one is the electroplated diamond grinding disc, and the other is the carbide grinding disc; the electroplated grinding disc has only a layer of diamond on the surface, which is consumed very quickly and has a high cost, and requires two types of grinding discs, one for grinding and the other for polishing; the carbide grinding disc is made by sprinkling diamond powder on the surface of the carbide, and the coarse powder is used for grinding and the fine powder is used for polishing.

[0003] At present, China's patent application number: CN202222303837.6 discloses an adaptive online sharpening device for a double-sided grinder fixed abrasive disc, comprising an upper abrasive disc and a lower abrasive disc; a planetary gear clamp structure is arranged at the upper end of the lower abrasive disc, and the planetary gear clamp structure comprises a sun gear, a ring gear, and a planetary gear clamp; the sun gear is driven to rotate by a first drive structure, the ring gear is driven to rotate by a second drive structure, and the lower abrasive disc is driven to rotate by a third drive structure; a planetary gear clamp for mounting a workpiece is arranged between the sun gear and the ring gear, and a sharpening wheel for sharpening the upper abrasive disc and the lower abrasive disc is arranged between the planetary gear clamps.

[0004] However, in the production and preparation process of the grinding discs in the prior art, the grinding edges of the grinding discs are usually no longer sharpened, which makes the grinding discs prone to material blockage during grinding and use, affecting the performance of the grinding discs. In addition, the existing sharpening devices are inconvenient to change the position angle of the grinding point during use, resulting in poor contact between the grinding disc and the grinding point, affecting the efficiency and quality of sharpening and grinding, and the adaptability to the grinding discs is poor. Summary of the invention

[0005] The object of the present invention is to provide a preparation and sharpening method of a metal bond grinding disc and a sharpening device to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a preparation and sharpening method of a metal bond grinding disc, the specification of the metal bond grinding disc is 330mm*30mm*50mm*(70mm+70mm)*10mm, wherein 330mm is the outer diameter of the metal bond grinding disc, 30mm is the thickness of the metal bond grinding disc, 50mm is the inner hole diameter of the metal bond grinding disc, 10mm is the height of the metal layer, 70mm ring width is a coarse-grained ring, and another 70mm ring width is a fine-grained ring, the fine-grained ring is located inside the coarse-grained ring, and the inner hole is located inside the fine-grained ring. The preparation and sharpening method comprises the following steps:

[0007] S1. Make a circle of partitions from the outer circle of the grinding disc to the annular circle formed at the diameter of the grinding disc at 260mm to separate the coarse-grained diamonds from the fine-grained diamonds;

[0008] S2. After the two types of diamonds are cast, they are first cold pressed into shape and then the partition is removed;

[0009] S3, placing the cold-pressed grinding disc into a reducing atmosphere furnace for pressure sintering, and adding 1-5% of a low melting point substance;

[0010] S4. After the pressure sintering is completed, the grinding disc is placed on a hot press with the upper and lower bottom plates at 300 degrees, the pressure is increased, and the pressure is cooled;

[0011] S5. The cooled grinding wheel is clamped by a rotatable fixture and placed under the sharpening device to process the grinding edge of the grinding wheel to optimize the edge shape of the grinding wheel so that the grinding wheel provides a smoother surface processing effect, thereby obtaining a metal bond grinding wheel.

[0012] Preferably, the coarse-grained diamond is made by uniformly mixing metal powder, a wetting agent and diamond W4-8, and the fine-grained diamond is made by uniformly mixing metal powder, a wetting agent and diamond W15-25.

[0013] Preferably, the composition of the low melting point material is 20-30% tungsten carbide + 50-65% cobalt + 1-5% tin.

[0014] Preferably, the pressure of the pressure sintering in the reducing atmosphere furnace is 3-5KN / CM 2 .

[0015] The present invention also provides a sharpening device for a metal-bond grinding wheel, which is used to perform the above-mentioned preparation and sharpening method to prepare the metal-bond grinding wheel. The sharpening device includes a base, a lifting body is fastened to the top side of the base, the output end on the front side of the bottom of the lifting body is connected to a grinding wheel sharpening mechanism, and the front lower parts of the left and right sides of the lifting body are fixedly connected with cross pieces, and the left and right sides of the top of the grinding wheel sharpening mechanism respectively penetrate and slide inside the two cross pieces. The grinding wheel sharpening mechanism includes a tilting structure, a connecting head fixed to the middle side of the top of the tilting structure, two limiting columns installed on the left and right sides of the top of the connecting head, and a repairing structure connected to the middle side of the bottom of the tilting structure, the top side of the connecting head is connected to the output end on the front side of the bottom of the lifting body, and the two limiting columns respectively penetrate and slide inside the two cross pieces.

[0016] Preferably, the tilting structure includes a disc fixed to the connecting head on the middle side of the top, two first supports respectively fastened to the front and rear sides of the bottom of the disc, two second supports respectively fastened to the left and right sides of the bottom of the disc, a first motor fastened to the left rear side of the bottom of the disc, a second motor fastened to the right front side of the bottom of the disc, and an adjustment component respectively connected to the output ends of the first motor and the second motor, the left and right sides of the top of the disc are fixed to two limiting columns, the front and rear sides of the adjustment component are respectively slidably connected to the two first supports, the left and right sides of the adjustment component are respectively slidably connected to the two second supports, and the bottom of the adjustment component is fastened to the disc repair structure.

[0017] Preferably, the positioning assembly includes a first screw rod whose left end is connected to the right output end of the first motor, a first tooth plate meshing and transmitting at the middle right side of the bottom of the first screw rod, a first arc frame fixed to the middle side of the front portion of the first tooth plate, a second screw rod whose front end is connected to the rear output end of the second motor, a second tooth plate meshing and transmitting at the middle and rear side of the bottom of the second screw rod, a second arc frame fixed to the middle side of the left portion of the second tooth plate, a shift head sliding through the first and second arc frames, and a positioning plate fixed to the bottom side of the shift head, the rear portion of the first tooth plate is slidably connected to the first support located on the rear side, the front portion of the first arc frame is slidably connected to the first support located on the front side, the right portion of the second tooth plate is slidably connected to the second support located on the right side, the left portion of the second arc frame is slidably connected to the second support located on the left side, and the bottom of the positioning plate is fastened to the repair plate structure.

[0018] Preferably, the top tooth grooves of the first tooth plate and the second tooth plate are both arc-shaped structures, the bottoms of the first support and the second support are both arc-shaped structures, the interiors of the first arc frame and the second arc frame are both hollow, and the second arc frame is located on the bottom side of the first arc frame, and the front end of the first arc frame and the left end of the second arc frame are both arc-shaped.

[0019] Preferably, the disc repair structure includes a supporting plate with a top side fastened to the tilting structure, a third motor and a fourth motor fastened to the left and right sides of the bottom of the supporting plate respectively, a first gear connected to the bottom output end of the third motor, a second gear meshing and transmitting to the right side of the first gear, a third gear arranged on the bottom side of the first gear, a fourth gear meshing and transmitting to the right side of the third gear, a gear plate coaxially rotating at the bottom of the third gear, and a grinding assembly arranged on the bottom side of the gear plate, the middle side of the top of the fourth gear is connected to the bottom output end of the fourth motor, a rotating shaft rod is penetrated in the middle of the second gear, the top of the rotating shaft rod is rotatably connected to the supporting plate, the bottom of the rotating shaft rod penetrates and rotates on the third gear and the middle side of the gear plate, and the bottom end of the rotating shaft rod is connected to the grinding assembly, the first gear and the fourth gear have the same structure and size, and the second gear and the third gear have the same number of teeth.

[0020] Preferably, the grinding assembly includes a bracket connected to the bottom of the rotating shaft rod on the middle side of the top, a driven gear that passes through and rotates on the right side of the top of the bracket, a first bevel gear that coaxially rotates on the bottom of the driven gear, a second bevel gear that meshes and transmits to the left side of the bottom of the first bevel gear, a threaded column connected to the middle part of the left side of the second bevel gear, two bearing blocks that are wrapped and rotated on the left and right sides of the threaded column, an internally threaded slider that is threadedly connected to the outer surface of the threaded column, a loading slide fixed to the bottom of the internally threaded slider, a grinding head fastened to the bottom side of the loading slide, and two guide rods that pass through and slide inside the loading slide, the left side of the driven gear is meshed with the gear plate, the top side of the bearing block is fixed to the bracket, the top side of the internally threaded slider is slidably connected to the bracket, and the left and right ends of the two guide rods are fixed to the bracket.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The preparation and sharpening method of the present invention divides a metal bond grinding wheel into two ring widths, the outer ring width is coarse-grained diamond, and the inner ring width is fine-grained diamond. A low-melting-point substance is added in a reducing atmosphere process to ensure sintering density. After sintering, high-pressure and low-temperature cooling is adopted. The cooled grinding wheel is clamped by a rotatable clamp and placed under a sharpening device. The grinding edge of the grinding wheel is processed to optimize the edge shape of the grinding wheel so that the grinding wheel provides a smoother surface processing effect. The prepared metal bond grinding wheel can improve the cutting efficiency during grinding to a certain extent after the sharpening treatment, and the sharp grinding wheel can disperse the heat generated during the grinding process, reduce the wear rate of the grinding wheel, and thus extend its service life.

[0023] The present invention optimizes the setting of the sharpening device, and under the action of the lifting body, the connecting head drives the tilting structure and the repairing disc structure to change their height positions, and the tilting structure can change the tilting angle of the repairing disc structure. By adjusting the grinding angle, the contact mode with the grinding disc can be better controlled, thereby improving the grinding efficiency and quality, ensuring that the sharpness of the edge reaches the optimal state, and the appropriate tilting angle can reduce the friction and heat generation during the grinding process, reduce the wear of the grinding head position and the grinding disc, and extend the service life of the equipment. It can adapt to grinding discs of different types and shapes and provide a wider range of application scenarios.

[0024] The top tooth grooves of the first tooth plate and the second tooth plate of the present invention are both arc-shaped structures, and the bottoms of the first support and the second support are both arc-shaped structures, so that the first tooth plate and the second tooth plate can move in an arc shape. The interiors of the first arc frame and the second arc frame are both hollow, and the second arc frame is located on the bottom side of the first arc frame. The front end of the first arc frame and the left end of the second arc frame are both arc-shaped, so that the position angle between the first arc frame and the second arc frame can be changed in an arc shape, thereby changing the position angle of the shift head, and the positioning plate and the repair plate structure are adjusted to the grinding position angle through the shift head.

[0025] According to the present invention, when the third motor and the fourth motor rotate in the same direction at the same speed, the loading slide and the grinding head do not produce lateral displacement and keep rotating in one direction. At this time, the grinding disc is sharpened by the rotating grinding head. When the fourth motor rotates and the third motor does not rotate, the lateral position of the grinding head is changed by the rotation of the threaded column rod, so that the grinding head is located at different positions on the grinding disc, so that different positions can be sharpened, thereby improving the efficiency of sharpening. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a process flow chart of the preparation of the metal bond grinding disc;

[0027] Figure 2 It is a structural schematic diagram of the sharpening device of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the grinding disc dressing mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the tilting structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the top view of the structure of the position adjustment assembly of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the connection between the second screw rod and the second tooth plate of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the disk repair structure of the present invention;

[0033] Figure 8 It is a schematic structural diagram of the grinding assembly of the present invention.

[0034] In the figure: base 1, lifting body 2, grinding disc sharpening mechanism 3, cross piece 4, tilting structure 31, connecting head 32, limiting column 33, disc repairing structure 34, disc 311, first support 312, second support 313, first motor 314, second motor 315, adjustment component 316, first screw 3161, first tooth piece 3162, first arc frame 3163, second screw 3164, second tooth piece 3165, second arc frame 3166, shift head 3167, positioning Disk-3168, supporting plate-341, third motor-342, fourth motor-343, first gear-344, second gear-345, third gear-346, fourth gear-347, gear plate-348, grinding assembly-349, bracket-3491, driven gear-3492, first bevel gear-3493, second bevel gear-3494, threaded column-3495, bearing block-3496, internal threaded slider-3497, loading slide-3498, grinding head-3499, guide rod-34910. DETAILED DESCRIPTION

[0035] In order to further explain the technical solution of the present invention, it is described in detail below through specific embodiments.

[0036] See also Figure 1 The present invention provides a preparation and sharpening method for a metal bond grinding disc, wherein the specification of the metal bond grinding disc is 330mm*30mm*50mm*(70mm+70mm)*10mm, wherein 330mm is the outer diameter of the metal bond grinding disc, 30mm is the thickness of the metal bond grinding disc, 50mm is the inner hole diameter of the metal bond grinding disc, 10mm is the height of the metal layer, a 70mm ring width is a coarse-grained ring, and another 70mm ring width is a fine-grained ring, the fine-grained ring is located inside the coarse-grained ring, and the inner hole is located inside the fine-grained ring. The preparation and sharpening method comprises the following steps:

[0037] First, make a circle of partitions from the outer circle of the grinding disc to the annular circle formed by the grinding disc diameter at 260mm to separate the coarse-grained diamonds made by mixing metal powder, wetting agent and diamond W4-8 evenly from the fine-grained diamonds made by mixing metal powder, wetting agent and diamond W15-25 evenly;

[0038] Second, after the two types of diamonds are cast, they are first cold pressed into shape and then the partition is removed to ensure that the different binders are perfectly combined together;

[0039] Third, put the cold pressed grinding disc into the pressure of 3.5KN / cm 2, sintering under pressure in a reducing atmosphere furnace at 850-900 degrees, and adding 1-5% low melting point substances. The reducing atmosphere can not only reduce metal oxides to ensure sintering densification, but also protect diamond carbide. The composition of the low melting point substance is 20-30% tungsten carbide + 50-65% cobalt + 1-5% tin;

[0040] Fourth, after the pressure sintering is completed, place the grinding disc on a hot press with the upper and lower bottom plates at 300 degrees, and control the pressure at 10-15KN / cm 2 , cooling under pressure;

[0041] Fifth, the cooled grinding wheel is clamped by a rotatable clamp and placed under the sharpening device, and the grinding edge of the grinding wheel is processed to optimize the edge shape of the grinding wheel so that the grinding wheel provides a smoother surface processing effect, thereby obtaining a metal bond grinding wheel. The obtained metal bond grinding wheel can improve the cutting efficiency during grinding to a certain extent after the sharpening treatment, and the sharp grinding wheel can disperse the heat generated during the grinding process, reduce the wear rate of the grinding wheel, and thus extend its service life.

[0042] See also Figure 1-Figure 8 The present invention provides a sharpening device for a metal bond grinding wheel, comprising a base 1, a lifting body 2 is fastened to the top side of the base 1, and an output end at the front side of the bottom of the lifting body 2 is connected to a grinding wheel sharpening mechanism 3, so that the overall height of the grinding wheel sharpening mechanism 3 can be changed through the lifting body 2, so that the grinding position is close to the grinding wheel, and the front lower parts of the left and right sides of the lifting body 2 are fixedly connected with transverse pieces 4, and the left and right sides of the top of the grinding wheel sharpening mechanism 3 respectively penetrate and slide inside the two transverse pieces 4, which play a role of limiting guide, and ensure the stability of the grinding wheel sharpening mechanism 3 after the longitudinal displacement changes its position, and the grinding wheel sharpening mechanism 3 includes a tilting structure 31, a connecting head 32 fixed to the middle side of the top of the tilting structure 31, two limiting columns 33 installed on the left and right sides of the top of the connecting head 32, and a repairing structure 34 connected to the middle side of the bottom of the tilting structure 31, and the connecting head 32 The top side is connected to the output end of the bottom front side of the lifting body 2. Under the action of the lifting body 2, the connecting head 32 drives the tilting structure 31 and the repairing disc structure 34 to change their height position, and the tilting angle of the repairing disc structure 34 can be changed through the tilting structure 31. By adjusting the grinding angle, the contact method with the grinding disc can be better controlled, thereby improving the grinding efficiency and quality, and ensuring that the sharpness of the edge reaches the optimal state. The appropriate tilting angle can reduce the friction and heat generation during the grinding process, reduce the wear of the grinding head position and the grinding disc, and extend the service life of the equipment. It can adapt to grinding discs of different types and shapes and provide a wider range of application scenarios. The two limit columns 33 respectively penetrate and slide inside the two cross pieces 4. The limit columns 33 move in the two cross pieces 4 to maintain the stability of the tilting structure 31 and the repairing disc structure 34.

[0043] The tilting structure 31 includes a disk 311 fixed to the connector 32 at the middle of the top, two first supports 312 respectively fastened to the front and rear sides of the bottom of the disk 311, two second supports 313 respectively fastened to the left and right sides of the bottom of the disk 311, a first motor 314 fastened to the left rear side of the bottom of the disk 311, a second motor 315 fastened to the right front side of the bottom of the disk 311, and a positioning assembly 316 respectively connected to the output ends of the first motor 314 and the second motor 315. The left and right sides of the top of the disk 311 are fixed to the two limiting columns 33, the front and rear sides of the positioning assembly 316 are respectively slidably connected to the two first supports 312, the left and right sides of the positioning assembly 316 are respectively slidably connected to the two second supports 313, and the positioning assembly 316 is The bottom is fastened to the repairing disc structure 34, so that under the action of the first motor 314 and the second motor 315, the adjustment component 316 drives the repairing disc structure 34 to change its position to present an inclined state. The adjustment component 316 includes a first screw rod 3161 whose left end is connected to the right output end of the first motor 314, a first tooth piece 3162 meshing and transmitting at the middle right side of the bottom of the first screw rod 3161, and a first arc frame 3163 fixed to the middle side of the front part of the first tooth piece 3162. Under the action of the first motor 314, the first screw rod 3161 drives the first arc frame 3163 to swing to a certain position through cooperation with the first tooth piece 3162, and the front end of the second screw rod 3164 is connected to the rear output end of the second motor 315, and the second screw rod 3164 meshing and transmitting at the bottom of the second screw rod 3164. The second tooth piece 3165 at the middle and rear side of the second tooth piece 3165, and the second arc frame 3166 fixed on the middle side of the left side of the second tooth piece 3165, under the action of the second motor 315, the second screw rod 3164 drives the second arc frame 3166 to swing to a position through the cooperation with the second tooth piece 3165, and penetrates the shift head 3167 sliding on the inner sides of the first arc frame 3163 and the second arc frame 3166 and the positioning plate 3168 fixed on the bottom side of the shift head 3167, the rear part of the first tooth piece 3162 is slidably connected with the first support 312 located on the rear side, the front part of the first arc frame 3163 is slidably connected with the first support 312 located on the front side, the right part of the second tooth piece 3165 is slidably connected with the second support 313 located on the right side, and the left part of the second arc frame 3166 is slidably connected with the left side The second support 313 is slidably connected, the bottom of the positioning plate 3168 is fastened to the repairing plate structure 34, and the position angle of the shift head 3167 is changed after the first arc frame 3163 and the second arc frame 3166 swing to a certain position, so that the positioning plate 3168 and the repairing plate structure 34 can adjust the grinding position angle through the shift head 3167. The top tooth grooves of the first tooth piece 3162 and the second tooth piece 3165 are both arc-shaped structures, and the bottoms of the first support 312 and the second support 313 are both arc-shaped structures, so that the first tooth piece 3162 and the second tooth piece 3165 can move in an arc shape. The first arc frame 3163 and the second arc frame 3166 are both hollow inside, and the second arc frame 3166 is located at the bottom side of the first arc frame 3163.The front end of the first arc frame 3163 and the left end of the second arc frame 3166 are both arc-shaped, so that the first arc frame 3163 and the second arc frame 3166 can change their position angle in an arc shape.

[0044] The repairing plate structure 34 includes a carrier plate 341 fastened to the tilting structure 31 on the top side, and the tilting structure 31 is used to change the position tilting angle of the carrier plate 341, respectively fastened to the left and right sides of the bottom of the carrier plate 341, a first gear 344 connected to the output end of the bottom of the third motor 342, a second gear 345 meshing and transmitting on the right side of the first gear 344, a third gear 346 arranged on the bottom side of the first gear 344, a fourth gear 347 meshing and transmitting on the right side of the third gear 346, a gear plate 348 coaxially rotating at the bottom of the third gear 346, and a grinding assembly 349 arranged on the bottom side of the gear plate 348, and the middle side of the top of the fourth gear 347 is connected to the bottom of the fourth motor 343. The output end is connected, a rotating shaft rod is set through the middle of the second gear 345, the top of the rotating shaft rod is rotatably connected to the carrier plate 341 to ensure the stability of the rotation of the second gear 345, the bottom of the rotating shaft rod is rotated through the third gear 346 and the middle side of the gear plate 348, and the bottom end of the rotating shaft rod is connected to the grinding assembly 349, so as to drive the grinding assembly 349 to rotate through the rotating shaft rod on the second gear 345, so as to sharpen the grinding disc through the grinding assembly 349, the first gear 344 and the fourth gear 347 have the same structure and size, and the second gear 345 and the third gear 346 have the same number of teeth, so that the grinding assembly 349 can perform two forms of movement, and the grinding assembly 349 includes a top middle side connected to the bottom of the rotating shaft rod. The bracket 3491 is connected, the driven gear 3492 passes through and rotates on the right side of the top of the bracket 3491, the first bevel gear 3493 coaxially rotates on the bottom of the driven gear 3492, the second bevel gear 3494 meshing and transmitting on the left side of the bottom of the first bevel gear 3493, and the threaded column 3495 connected to the middle of the left side of the second bevel gear 3494, the left side of the driven gear 3492 is meshed with the gear plate 348, and the driven gear 3492 drives the first bevel gear 3493 to rotate under the rotation of the gear plate 348. The threaded column 3495 is rotated by the cooperation of the first bevel gear 3493 and the second bevel gear 3494, which wraps around the two bearing blocks 3496 on the left and right sides of the threaded column 3495, which are threadedly connected to The internal threaded slider 3497 on the outer surface of the threaded column 3495, the loading slide 3498 fixed to the bottom of the internal threaded slider 3497, the grinding head 3499 fastened to the bottom side of the loading slide 3498, and the two guide rods 34910 that pass through and slide inside the loading slide 3498. When the threaded column 3495 rotates, the loading slide 3498 moves laterally on the surfaces of the two guide rods 34910 through the cooperation with the internal threaded slider 3497, thereby changing the lateral position of the grinding head 3499 to perform sharpening treatment on different positions on the grinding disc. The top side of the bearing block 3496 is fixed to the bracket 3491 to ensure the stability of the rotation of the threaded column 3495. The top side of the internal threaded slider 3497 is slidably connected to the bracket 3491.The left and right ends of the two guide rods 34910 are fixed to the bracket 3491 to ensure the stability of the lateral displacement of the loading slide 3498. When the third motor 342 and the fourth motor 343 rotate in the same direction at the same speed, the loading slide 3498 and the grinding head 3499 do not produce lateral displacement and keep rotating in one direction. At this time, the grinding disc is sharpened by the rotating grinding head 3499. When the fourth motor 343 rotates and the third motor 342 does not rotate, the lateral position of the grinding head 3499 is changed by the rotation of the threaded column 3495, so that the grinding head 3499 is located at different positions on the grinding disc, so that different positions can be sharpened to improve the efficiency of sharpening.

[0045] The working principle of the sharpening device of a metal bond grinding disc of the present invention is as follows:

[0046] First, the grinding disc is clamped by a rotatable clamp and placed under the sharpening device, and then the fourth motor 343 is started according to the position control on the grinding disc. When the fourth motor 343 rotates and the third motor 342 does not rotate, the fourth motor 343 rotates the third gear 346 and the gear plate 348 through the fourth gear 347. When the threaded column 3495 rotates, the loading slide 3498 is moved laterally on the surfaces of the two guide rods 34910 through the cooperation with the internal threaded slider 3497, thereby changing the lateral position of the grinding head 3499 so that the grinding head 3499 is aligned with different positions on the grinding disc;

[0047] Secondly, the lifting body 2 is controlled to start so that the height position of the grinding head 3499 is adjusted, and the grinding head 3499 is moved down to contact the grinding disc, and then the third motor 342 and the fourth motor 343 are controlled to start so that the third motor 342 and the fourth motor 343 rotate in the same direction at the same speed, and the loading slide 3498 and the grinding head 3499 do not produce lateral displacement action and keep rotating in one direction. At this time, the grinding disc is sharpened by the rotating grinding head 3499;

[0048] Again, during the sharpening process, the first motor 314 and the second motor 315 can be controlled to start. Under the action of the first motor 314, the first screw 3161 drives the first arc frame 3163 to swing position by cooperating with the first tooth plate 3162. Under the action of the second motor 315, the second screw 3164 drives the second arc frame 3166 to swing position by cooperating with the second tooth plate 3165. After the first arc frame 3163 and the second arc frame 3166 swing to the position, the position angle of the shift head 3167 is changed, so that the positioning plate 3168 and the repairing plate structure 34 are adjusted to the tilted position angle of grinding through the shift head 3167, so that the grinding head 3499 is tilted for sharpening the grinding plate. By adjusting the grinding angle, the contact mode with the grinding plate can be better controlled, thereby improving the grinding efficiency and quality, and ensuring that the sharpness of the edge reaches the optimal state.

[0049] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sharpening device for a metal bond grinding disc, characterized in that: The sharpening device comprises a base (1), a lifting body (2) is fastened to the top side of the base (1), an output end at the bottom front side of the lifting body (2) is connected to a grinding disc sharpening mechanism (3), the front lower parts of the left and right sides of the lifting body (2) are fixedly connected to transverse plates (4), the top left and right sides of the grinding disc sharpening mechanism (3) respectively penetrate and slide inside the two transverse plates (4), the grinding disc sharpening mechanism (3) comprises a tilting structure (31), a connecting head (32) fixed to the middle side of the top of the tilting structure (31), two limiting columns (33) installed on the left and right sides of the top of the connecting head (32), and a repairing disc structure (34) connected to the middle side of the bottom of the tilting structure (31), the top side of the connecting head (32) is connected to the output end at the bottom front side of the lifting body (2), the two limiting columns (33) respectively penetrate and slide inside the two transverse plates (4); the tilting structure (31) comprises a top A disc (311) fixed to the connecting head (32) at the middle side of the disc (311), two first supports (312) respectively fastened to the front and rear sides of the bottom of the disc (311), two second supports (313) respectively fastened to the left and right sides of the bottom of the disc (311), a first motor (314) fastened to the left rear side of the bottom of the disc (311), a second motor (315) fastened to the right front side of the bottom of the disc (311), and a positioning component (316) respectively connected to the output ends of the first motor (314) and the second motor (315), the left and right sides of the top of the disc (311) are fixed to the two limiting pillars (33), the front and rear sides of the positioning component (316) are respectively slidably connected to the two first supports (312), the left and right sides of the positioning component (316) are respectively slidably connected to the two second supports (313), and the bottom of the positioning component (316) is fastened to the disc repair structure (34);The positioning assembly (316) comprises a first screw (3161) whose left end is connected to the right output end of the first motor (314), a first tooth piece (3162) meshingly transmitted at the middle right side of the bottom of the first screw (3161), a first arc frame (3163) fixed at the middle side of the front part of the first tooth piece (3162), a second screw (3164) whose front end is connected to the rear output end of the second motor (315), a second tooth piece (3165) meshingly transmitted at the middle rear side of the bottom of the second screw (3164), a second arc frame (3166) fixed at the middle side of the left part of the second tooth piece (3165), and a first arc frame (3167) slidingly extending through the first arc frame (3168). 3163 and a shift head (3167) inside the second arc frame (3166) and a positioning plate (3168) fixed to the bottom side of the shift head (3167), the rear part of the first tooth plate (3162) is slidably connected to the first support (312) located at the rear side, the front part of the first arc frame (3163) is slidably connected to the first support (312) located at the front side, the right part of the second tooth plate (3165) is slidably connected to the second support (313) located on the right side, the left part of the second arc frame (3166) is slidably connected to the second support (313) located on the left side, and the bottom of the positioning plate (3168) is connected to the plate repair structure (3166). 4) are fastened together; the repairing plate structure (34) comprises a carrier plate (341) whose top side is fastened to the tilting structure (31), a third motor (342) and a fourth motor (343) fastened to the left and right sides of the bottom of the carrier plate (341), respectively, a first gear (344) connected to the output end of the bottom of the third motor (342), a second gear (345) meshingly transmitted on the right side of the first gear (344), a third gear (346) arranged on the bottom side of the first gear (344), a fourth gear (347) meshingly transmitted on the right side of the third gear (346), and a gear plate (348) coaxially rotating at the bottom of the third gear (346) and a grinding assembly (349) arranged at the bottom side of the gear plate (348); the middle side of the top of the fourth gear (347) is connected to the bottom output end of the fourth motor (343); a rotating shaft rod is arranged through the middle of the second gear (345); the top of the rotating shaft rod is rotatably connected to the carrier plate (341); the bottom of the rotating shaft rod is rotatably connected to the third gear (346) and the middle side of the gear plate (348); and the bottom end of the rotating shaft rod is connected to the grinding assembly (349); the first gear (344) and the fourth gear (347) have the same structure and size; and the second gear (345) and the third gear (346) have the same number of teeth. ; 2. The sharpening device for a metal bond grinding disc according to claim 1, characterized in that: The top tooth grooves of the first tooth piece (3162) and the second tooth piece (3165) are both arc-shaped structures, the bottoms of the first support (312) and the second support (313) are both arc-shaped structures, the interiors of the first arc frame (3163) and the second arc frame (3166) are both hollow, and the second arc frame (3166) is located on the bottom side of the first arc frame (3163), and the front end of the first arc frame (3163) and the left end of the second arc frame (3166) are both arc-shaped.

3. The sharpening device for a metal bond grinding disc according to claim 1, characterized in that: The grinding assembly (349) comprises a bracket (3491) connected to the bottom of the rotating shaft at the middle side of the top, a driven gear (3492) passing through and rotating on the right side of the top of the bracket (3491), a first bevel gear (3493) coaxially rotating on the bottom of the driven gear (3492), a second bevel gear (3494) meshingly transmitting on the left side of the bottom of the first bevel gear (3493), a threaded column (3495) connected to the middle part of the left side of the second bevel gear (3494), two bearing blocks (3496) wrapped around and rotating on the left and right sides of the threaded column (3495), and an inner threaded connection to the outer surface of the threaded column (3495). A threaded slider (3497), a loading slider (3498) fixed to the bottom of the internally threaded slider (3497), a grinding head (3499) fastened to the bottom side of the loading slider (3498), and two guide rods (34910) sliding through the loading slider (3498), the left side of the driven gear (3492) is meshed with the gear plate (348), the top side of the bearing block (3496) is fixed to the bracket (3491), the top side of the internally threaded slider (3497) is slidably connected to the bracket (3491), and the left and right ends of the two guide rods (34910) are fixed to the bracket (3491).

4. A method for preparing and sharpening a metal bond grinding disc, characterized in that: A sharpening device for a metal bond grinding disc according to any one of claims 1 to 3 is used to prepare a sharpened metal bond grinding disc, wherein the specification of the metal bond grinding disc is 330mm*30mm*50mm*(70mm+70mm)*10mm, wherein 330mm is the outer diameter of the metal bond grinding disc, 30mm is the thickness of the metal bond grinding disc, 50mm is the inner hole diameter of the metal bond grinding disc, 10mm is the height of the metal layer, 70mm ring width is a coarse-grained ring, and another 70mm ring width is a fine-grained ring, the fine-grained ring is located inside the coarse-grained ring, and the inner hole is located inside the fine-grained ring. The preparation and sharpening method comprises the following steps: S1. Make a circle of partitions from the outer circle of the grinding disc to the annular circle formed at the diameter of the grinding disc at 260mm to separate the coarse-grained diamonds from the fine-grained diamonds; S2. After the two types of diamonds are cast, they are first cold pressed into shape and then the partition is removed; S3, placing the cold-pressed grinding disc into a reducing atmosphere furnace for pressure sintering, and adding 1-5% of a low melting point substance; S4. After the pressure sintering is completed, the grinding disc is placed on a hot press with the upper and lower bottom plates at 300 degrees, the pressure is increased, and the pressure is cooled; S5. The cooled grinding wheel is clamped by a rotatable fixture and placed under the sharpening device to process the grinding edge of the grinding wheel to optimize the edge shape of the grinding wheel so that the grinding wheel provides a smoother surface processing effect, thereby obtaining a metal bond grinding wheel.

5. The method for preparing and sharpening a metal bond grinding disc according to claim 4, characterized in that: The coarse-grained diamond is made by uniformly mixing metal powder, a wetting agent and diamond W4-8, and the fine-grained diamond is made by uniformly mixing metal powder, a wetting agent and diamond W15-25.

6. The method for preparing and sharpening a metal bond grinding disc according to claim 4, characterized in that: The composition of the low melting point material is 20-30% tungsten carbide + 50-65% cobalt + 1-5% tin.

7. The method for preparing and sharpening a metal bond grinding disc according to claim 4, characterized in that: The pressure of the pressure sintering in the reducing atmosphere furnace is 3-5KN / CM 2 .

Images