Automated continuous feeding intelligent chamfering device for large-diameter quartz
The automated continuous feeding intelligent chamfering device for large-diameter quartz blanks solves the problems of high labor intensity and low processing efficiency in the chamfering process of quartz blanks. It achieves stable clamping and precise chamfering of quartz blanks, improving production efficiency and equipment applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FERROTEC (JIANGSU) QUARTZ TECH CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-31
AI Technical Summary
Existing methods for chamfering quartz blanks suffer from problems such as high labor intensity due to manual operation, processing quality being affected by human factors, low efficiency, high scrap rate, and inability to achieve simultaneous chamfering of both sides of the edge.
An automated, continuous feeding intelligent chamfering device for large-diameter quartz blanks is adopted, which includes a rubber roller conveyor line, a positioning mechanism, a drive mechanism, an adjustment mechanism, and a disassembly and assembly mechanism to achieve continuous automated feeding, stable clamping, and precise chamfering of quartz blanks.
It improves production efficiency, reduces labor intensity, ensures clamping reliability and rotation accuracy, broadens the processing application range of the equipment, simplifies the grinding wheel replacement process, and improves equipment maintenance efficiency.
Smart Images

Figure CN122480804A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of quartz processing technology, specifically to an automated, continuous feeding intelligent chamfering device for large-diameter quartz. Background Technology
[0002] Quartz blanks, after being obtained by ingot cutting or sawing, usually have very sharp edges, posing safety hazards and affecting subsequent assembly and surface treatment.
[0003] Current chamfering processes mostly involve manual chamfering of each piece using a handheld angle grinder or single-point grinding on semi-automated production lines. Manual operation is labor-intensive, and processing quality is affected by human factors. Common problems with semi-automatic / fully automatic solutions include discontinuous feeding, unstable clamping, low efficiency in processing only one side, the need for multiple material flipping, inconvenient adjustments, and poor adaptability to different shapes and chamfer sizes. Furthermore, existing equipment often cannot simultaneously chamfer both edges, resulting in low efficiency and a high scrap rate. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides an automated, continuous feeding intelligent chamfering device for large-diameter quartz, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an automated continuous feeding intelligent chamfering device for large-diameter quartz, including a base, wherein a rubber roller conveyor line is provided on the upper side of the base, and the rubber roller conveyor line is used to convey quartz blanks;
[0008] It also includes a positioning mechanism and a driving mechanism. The positioning mechanism includes two movable rubber wheels, and the driving mechanism includes two synchronously rotating driving rubber wheels. The two movable rubber wheels and the two driving rubber wheels position and clamp the quartz blank on the rubber roller conveyor line and rotate it on a fixed axis.
[0009] It also includes an adjustment mechanism, a disassembly and assembly mechanism, and a grinding wheel. The grinding wheel is detachably mounted on the disassembly and assembly mechanism. The adjustment mechanism changes the contact radius between the grinding wheel and the quartz blank, thereby adjusting the chamfer width and angle, or selecting different surfaces.
[0010] Preferably, the positioning mechanism includes a base plate, which is fixedly installed on the upper side of the base. A cylinder is fixedly installed on the base plate, and a connecting column is fixedly connected to the piston rod end of the cylinder. Two movable rubber wheels are rotatably installed at the ends of the connecting column. The cylinder drives the connecting column to move the movable rubber wheels laterally to clamp or release the quartz blank.
[0011] Preferably, the driving mechanism includes a fixed frame, which is fixedly installed on the right side of the base plate. A drive motor is installed inside the fixed frame, and two rotating columns are rotatably connected inside the fixed frame. The output shaft of the drive motor is fixedly connected to one of the rotating columns. A first gear is fixedly connected to the middle of each of the two rotating columns, and a second gear meshes between the two first gears. The two rotating columns penetrate the side wall of the fixed frame and extend to its outside. A drive rubber wheel is fixedly installed at the end of each rotating column. The two drive rubber wheels and two movable rubber wheels are arranged in a quadrilateral shape and together form a four-point support structure for the quartz blank.
[0012] Preferably, the adjustment mechanism includes a lifting component, an angle adjustment component, and a fine-tuning component; the lifting component is used to adjust the height of the grinding wheel to adapt to quartz blanks of different thicknesses; the angle adjustment component is used to adjust the angle of the grinding wheel to adjust the chamfer size of the quartz blank; and the fine-tuning component is used to fine-tune the grinding wheel to adapt to quartz blanks of different diameters.
[0013] Preferably, the lifting assembly includes a first lead screw, which is rotatably mounted on the upper side of the base. A first adjustment knob is fixedly connected to the top of the first lead screw. A first moving block is connected to the threaded part of the first lead screw. A first positioning plate is fixedly connected to one side of the first moving block. The first positioning plate is slidably connected to the side of the base via a slide rail.
[0014] Preferably, the angle adjustment component includes an arc-shaped guide rail, which is fixedly connected to the side of the first positioning plate. A second positioning plate is slidably connected inside the arc-shaped guide rail. A rotating second adjustment knob is provided at the bottom of the second positioning plate. A mating gear is connected to one side of the second adjustment knob through a worm gear reversing device. A mating rack is meshed to one side of the mating gear. The mating rack is fixedly connected to the bottom of the arc-shaped guide rail.
[0015] Preferably, the fine-tuning component includes a third lead screw, which is rotatably mounted on the upper side of the second positioning plate. A third adjustment knob is fixedly connected to the bottom end of the third lead screw. A third moving block is connected to the threaded part of the third lead screw. A third positioning plate is fixedly connected to the upper side of the third moving block. The third positioning plate is slidably connected to the upper side of the second positioning plate via a slide rail.
[0016] Preferably, the disassembly and assembly mechanism includes a frame, which is fixedly installed on the upper side of the third positioning plate. An electric telescopic rod is fixedly installed inside the frame. A disassembly and assembly head is fixedly connected to the telescopic end of the electric telescopic rod. A retaining sleeve is fixedly connected to the cylinder side wall of the electric telescopic rod through a connecting rod. The retaining sleeve is slidably fitted onto the telescopic end of the electric telescopic rod. A grinding wheel is installed on the top of the disassembly and assembly head. When the electric telescopic rod retracts, the retaining sleeve squeezes the disassembly and assembly head to achieve positioning and installation of the grinding wheel.
[0017] (III) Beneficial Effects
[0018] This invention provides an automated, continuous feeding intelligent chamfering device for large-diameter quartz, which has the following advantages:
[0019] 1. This invention achieves continuous automated feeding of quartz blanks through a rubber roller conveyor line. With the coordinated action of the positioning mechanism and the drive mechanism, the quartz blanks maintain a stable fixed-axis rotation state during processing. Continuous feeding and positioning clamping can be completed without manual intervention, which significantly improves production efficiency and reduces labor intensity.
[0020] 2. This invention employs a four-point support structure consisting of two movable rubber wheels and two driving rubber wheels. It achieves rapid clamping and releasing through cylinder drive, while using gear meshing transmission to ensure synchronous rotation of the two driving rubber wheels. This ensures that the quartz blank is subjected to uniform force and runs smoothly during rotation, effectively avoiding problems such as slippage, eccentricity, or surface damage that are prone to occur in traditional clamping methods. This guarantees the clamping reliability and rotation accuracy when processing large-diameter quartz blanks.
[0021] 3. This invention achieves precise adjustment of the grinding wheel in height, angle and radial position through a three-stage adjustment mechanism consisting of a lifting component, an angle adjustment component and a fine adjustment component. It can flexibly adapt to quartz blanks with different thicknesses, diameters and chamfer specifications, solving the technical defects of existing equipment such as inconvenient adjustment and poor adaptability, and greatly expanding the processing application range of the equipment.
[0022] 4. The disassembly and assembly mechanism of the present invention adopts a locking structure that combines an electric telescopic rod with a ferrule. The inward movement of the telescopic rod causes the ferrule to squeeze the disassembly and assembly head, thereby realizing the quick positioning, installation, disassembly and replacement of the grinding wheel. The operation is simple and quick, effectively shortening the grinding wheel replacement time and improving equipment maintenance efficiency and production continuity. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0024] Figure 2 This is a schematic diagram of the positioning mechanism of the present invention;
[0025] Figure 3 This is a schematic diagram of the driving mechanism of the present invention;
[0026] Figure 4 This is a schematic diagram of the angle adjustment component of the present invention;
[0027] Figure 5 This is a schematic diagram of the fine-tuning component and disassembly / assembly mechanism of the present invention.
[0028] The components include: 1. base; 2. rubber roller conveyor line; 3. positioning mechanism; 4. drive mechanism; 5. quartz blank; 6. adjustment mechanism; 7. disassembly and assembly mechanism; and 8. grinding wheel.
[0029] 31. Base plate; 32. Cylinder; 33. Connecting column; 34. Movable rubber wheel;
[0030] 41. Fixed frame; 42. Drive motor; 43. Rotating column; 44. First gear; 45. Second gear; 46. Drive rubber wheel;
[0031] 61. Lifting assembly; 6101. First adjusting knob; 6102. First lead screw; 6103. First moving block; 6104. First positioning plate;
[0032] 62. Angle adjustment assembly; 6201. Arc-shaped guide rail; 6202. Second positioning plate; 6203. Second adjustment knob; 6204. Worm gear reversing device; 6205. Connecting gear; 6206. Connecting rack;
[0033] 63. Fine-tuning component; 6301. Third adjusting knob; 6302. Third lead screw; 6303. Third moving block; 6304. Third positioning plate;
[0034] 71. Frame; 72. Electric telescopic rod; 73. Clip; 74. Assembly / disassembly head. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0036] Example:
[0037] like Figure 1As shown in the figure, this embodiment of the invention provides an automated continuous feeding intelligent chamfering device for large-diameter quartz, including a base 1. A rubber roller conveyor line 2 is arranged on the upper side of the base 1, and the rubber roller conveyor line 2 is used to transport quartz blanks 5. The rubber roller conveyor line 2 consists of multiple sets of parallel rubber rollers. The surface of the rollers is covered with a highly elastic and wear-resistant rubber layer, which can provide sufficient friction to drive the quartz blanks 5 forward while avoiding scratches on the quartz surface. The conveying speed of the rubber roller conveyor line 2 can be frequency-controlled according to the processing cycle, achieving seamless connection with subsequent positioning and clamping actions.
[0038] like Figure 2 As shown, a positioning mechanism 3 and a driving mechanism 4 are respectively installed on the upper side of the base 1 on both sides of the rubber roller conveyor line 2. The positioning mechanism 3 includes a base plate 31, which is fixedly installed on the upper side of the base 1 by bolts. A cylinder 32 is fixedly installed on the base plate 31. A connecting column 33 is fixedly connected to the end of the piston rod of the cylinder 32. Two movable rubber wheels 34 are rotatably installed on the end of the connecting column 33 through bearings. The cylinder 32 is a double-acting cylinder. The extension and retraction stroke of its piston rod is precisely matched with the opening and closing distance between the movable rubber wheel 34 and the driving rubber wheel 46. When the cylinder 32 drives the connecting column 33 to move the movable rubber wheel 34, the clamping or releasing action of the quartz blank 5 can be quickly realized. The rim of the movable rubber wheel 34 is made of polyurethane elastomer material, which ensures both clamping rigidity and appropriate elastic deformation capacity to adapt to the slight fluctuations in the outer diameter of the quartz blank 5.
[0039] like Figure 3 As shown, the drive mechanism 4 includes a fixed frame 41, which is fixedly installed on the right side of the base plate 31. A drive motor 42 is housed inside the fixed frame 41. The drive motor 42 is a servo motor to achieve precise speed control. Two rotating columns 43 are also rotatably connected inside the fixed frame 41. The output shaft of the drive motor 42 is fixedly connected to one of the rotating columns 43 via a coupling. A first gear 44 is fixedly connected to the middle of each of the two rotating columns 43, and a second gear 45 meshes between the two first gears 44, forming a synchronous transmission mechanism. The two rotating columns 43 penetrate the side wall of the fixed frame 41 and extend to its exterior. Drive wheels 46 are fixedly installed at the ends of the rotating columns 43. The two drive wheels 46 and the two movable wheels 34 are V-shaped and arranged in a quadrilateral pattern, forming a four-point support structure for the quartz blank 5. This support structure keeps the rotation axis of the quartz blank 5 stable, preventing radial runout during processing.
[0040] like Figure 2As shown, an adjustment mechanism 6 is provided on the side of the base 1. The adjustment mechanism 6 includes a lifting component 61, an angle adjustment component 62, and a fine adjustment component 63. The lifting component 61 is used to adjust the height of the grinding wheel 8 to accommodate quartz blanks 5 of different thicknesses. The lifting component 61 includes a first lead screw 6102, which is rotatably mounted on the upper side of the base 1 via a bearing seat. A first adjustment knob 6101 is fixedly connected to the top of the first lead screw 6102. A first moving block 6103 is connected to the threaded part of the first lead screw 6102. A first positioning plate 6104 is fixedly connected to one side of the first moving block 6103. The first positioning plate 6104 is slidably connected to the side of the base 1 via a slide rail. When the first adjustment knob 6101 is rotated, the first lead screw 6102 drives the first moving block 6103 to move vertically, thereby driving the first positioning plate 6104 and its angle adjustment component 62, fine adjustment component 63, and grinding wheel 8 to rise and fall as a whole, realizing the coarse adjustment of the processing height of the grinding wheel 8.
[0041] like Figure 4 As shown, the angle adjustment component 62 is used to adjust the angle of the grinding wheel 8 to adjust the chamfer size of the quartz blank 5. The angle adjustment component 62 includes an arc-shaped guide rail 6201, which is fixedly connected to the side of the first positioning plate 6104. The center of the arc of the arc-shaped guide rail 6201 coincides with the rotation axis of the quartz blank 5. A second positioning plate 6202 is slidably connected inside the arc-shaped guide rail 6201. A rotating second adjustment knob 6203 is provided at the bottom of the second positioning plate 6202. One side of the second adjustment knob 6203 is connected to a mating gear 6205 through a worm gear reversing device 6204. One side of the mating gear 6205 is meshed with a mating rack 6206, which is fixedly connected to the bottom of the arc-shaped guide rail 6201. The worm gear reversing device 6204 has a self-locking characteristic to prevent angle drift during processing. When the second adjustment knob 6203 is rotated, the power is transmitted to the mating gear 6205 through the worm gear reversing device 6204. The mating gear 6205 rolls along the mating rack 6206, driving the second positioning plate 6202 to swing along the arc-shaped guide rail 6201, thereby changing the cutting angle of the grinding wheel 8 relative to the surface of the quartz blank 5, and realizing the precise setting of the chamfering angle.
[0042] like Figure 5As shown, the fine-tuning component 63 is used to fine-tune the grinding wheel 8 to adapt to quartz blanks 5 of different diameters. The fine-tuning component 63 includes a third lead screw 6302, which is rotatably mounted on the upper side of the second positioning plate 6202. A third adjusting knob 6301 is fixedly connected to the bottom end of the third lead screw 6302. A third moving block 6303 is connected to the threaded portion of the third lead screw 6302. A third positioning plate 6304 is fixedly connected to the upper side of the third moving block 6303. The third positioning plate 6304 is slidably connected to the upper side of the second positioning plate 6202 via a slide rail. The third lead screw 6302 uses a fine thread with a small pitch, enabling fine adjustment of the radial position of the grinding wheel 8. When the third adjustment knob 6301 is rotated, the third lead screw 6302 drives the third moving block 6303 and the third positioning plate 6304 to move in the direction of approaching or moving away from the quartz blank 5, thereby precisely controlling the contact position between the grinding wheel 8 and the outer circle of the quartz blank 5 and ensuring the accuracy of the chamfer width.
[0043] A disassembly / assembly mechanism 7 is fixedly installed on the upper side of the third positioning plate 6304. The disassembly / assembly mechanism 7 includes a frame 71, which is fixedly installed on the upper side of the third positioning plate 6304 by bolts. An electric telescopic rod 72 is fixedly installed inside the frame 71, and a disassembly / assembly head 74 is fixedly connected to the telescopic end of the electric telescopic rod 72. A retaining sleeve 73 is fixedly connected to the cylinder side wall of the electric telescopic rod 72 by a connecting rod. The retaining sleeve 73 is slidably fitted onto the telescopic end of the electric telescopic rod 72. The inner hole of the retaining sleeve 73 has a conical structure, with the large end facing the disassembly / assembly head 74. A grinding wheel 8 is installed on the top of the disassembly / assembly head 74. The grinding wheel 8 is fitted onto the conical positioning surface of the disassembly / assembly head 74 through a central hole. The grinding wheel 8 has a V-shaped groove (the groove width and V angle can be designed according to requirements or the grinding wheel can be replaced). When the electric telescopic rod 72 retracts, the conical inner hole of the ferrule 73 and the conical outer surface of the disassembly head 74 are relatively displaced. The ferrule 73 presses against the disassembly head 74, causing its conical positioning surface to contract, thereby clamping and positioning the center hole of the grinding wheel 8, achieving quick locking and installation of the grinding wheel 8. When the electric telescopic rod 72 extends, the ferrule 73 disengages from the disassembly head 74, and the conical positioning surface of the disassembly head 74 elastically opens, allowing the grinding wheel 8 to be easily removed for replacement. This structural design reduces the replacement time of the grinding wheel 8 from several minutes using traditional bolt fixing to tens of seconds, significantly improving the maintenance efficiency of the equipment.
[0044] During operation, the quartz blank 5 is continuously conveyed to the positioning station by the rubber roller conveyor line 2. The cylinder 32 drives the movable rubber wheel 34 to extend, cooperating with the drive rubber wheel 46 to clamp and position the quartz blank 5. The drive motor 42 starts, driving the two drive rubber wheels 46 to rotate synchronously through gear transmission, thereby driving the quartz blank 5 to rotate uniformly around its axis. According to the thickness, diameter, and target chamfer specifications of the quartz blank 5, the first adjustment knob 6101, the second adjustment knob 6203, and the third adjustment knob 6301 are operated respectively to adjust the grinding wheel 8 to the appropriate processing position. The grinding wheel 8 contacts the edge of the rotating quartz blank 5 to complete the chamfering process. After processing is completed, the cylinder 32 retracts to release the quartz blank 5, and the rubber roller conveyor line 2 sends it out, and the next quartz blank 5 immediately enters, realizing continuous automated production.
[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automated continuous feeding intelligent chamfering device for large-diameter quartz, characterized in that: Includes a base (1), and a rubber roller conveyor line (2) is provided on the upper side of the base (1), the rubber roller conveyor line (2) is used to convey quartz blanks (5); It also includes a positioning mechanism (3) and a driving mechanism (4). The positioning mechanism (3) includes two movable rubber wheels (34), and the driving mechanism (4) includes two synchronously rotating driving rubber wheels (46). The two movable rubber wheels (34) and the two driving rubber wheels (46) position and clamp the quartz blank (5) on the rubber roller conveyor line (2) and rotate it on a fixed axis. It also includes an adjustment mechanism (6), a disassembly and assembly mechanism (7), and a grinding wheel (8). The grinding wheel (8) is detachably mounted on the disassembly and assembly mechanism (7). The adjustment mechanism (6) changes the contact radius between the grinding wheel (8) and the quartz blank (5), thereby adjusting the chamfer width and angle, or selecting different surfaces.
2. The automated continuous feeding large-diameter quartz intelligent chamfering device according to claim 1, characterized in that: The positioning mechanism (3) includes a base plate (31), which is fixedly installed on the upper side of the base (1). A cylinder (32) is fixedly installed on the base plate (31). A connecting column (33) is fixedly connected to the piston rod end of the cylinder (32). Two movable rubber wheels (34) are rotatably installed on the end of the connecting column (33). The cylinder (32) drives the connecting column (33) to move the movable rubber wheels (34) laterally, so as to clamp or release the quartz blank (5).
3. The automated continuous feeding intelligent chamfering device for large-diameter quartz as described in claim 2, characterized in that: The drive mechanism (4) includes a fixed frame (41), which is fixedly installed on the right side of the base plate (31). A drive motor (42) is installed inside the fixed frame (41). Two rotating columns (43) are also rotatably connected inside the fixed frame (41). The output shaft of the drive motor (42) is fixedly connected to one of the rotating columns (43). A first gear (44) is fixedly connected to the middle of each of the two rotating columns (43). A second gear (45) meshes between the two first gears (44). The two rotating columns (43) penetrate the side wall of the fixed frame (41) and extend to its outside. A drive rubber wheel (46) is fixedly installed at the end of the rotating column (43). The two drive rubber wheels (46) and the two movable rubber wheels (34) are arranged in a quadrilateral shape and together form a four-point support structure for the quartz blank (5).
4. The automated continuous feeding intelligent chamfering device for large-diameter quartz as described in claim 1, characterized in that: The adjustment mechanism (6) includes a lifting component (61), an angle adjustment component (62), and a fine-tuning component (63); the lifting component (61) is used to adjust the height of the grinding wheel (8) to adapt to quartz blanks (5) of different thicknesses; the angle adjustment component (62) is used to adjust the angle of the grinding wheel (8) to adjust the chamfer size of the quartz blank (5); the fine-tuning component (63) is used to fine-tune the grinding wheel (8) to adapt to quartz blanks (5) of different diameters.
5. The automated continuous feeding intelligent chamfering device for large-diameter quartz as described in claim 4, characterized in that: The lifting assembly (61) includes a first lead screw (6102), which is rotatably mounted on the upper side of the base (1). A first adjustment knob (6101) is fixedly connected to the top of the first lead screw (6102). A first moving block (6103) is connected to the threaded part of the first lead screw (6102). A first positioning plate (6104) is fixedly connected to one side of the first moving block (6103). The first positioning plate (6104) is slidably connected to the side of the base (1) via a slide rail.
6. The automated continuous feeding large-diameter quartz intelligent chamfering device according to claim 5, characterized in that: The angle adjustment component (62) includes an arc-shaped guide rail (6201), which is fixedly connected to the side of the first positioning plate (6104). A second positioning plate (6202) is slidably connected inside the arc-shaped guide rail (6201). A rotating second adjustment knob (6203) is provided at the bottom of the second positioning plate (6202). A mating gear (6205) is connected to one side of the second adjustment knob (6203) through a worm gear reversing device (6204). A mating rack (6206) is meshed with one side of the mating gear (6205). The mating rack (6206) is fixedly connected to the bottom of the arc-shaped guide rail (6201).
7. The automated continuous feeding intelligent chamfering device for large-diameter quartz as described in claim 6, characterized in that: The fine-tuning component (63) includes a third lead screw (6302), which is rotatably mounted on the upper side of the second positioning plate (6202). A third adjustment knob (6301) is fixedly connected to the bottom end of the third lead screw (6302). A third moving block (6303) is connected to the threaded part of the third lead screw (6302). A third positioning plate (6304) is fixedly connected to the upper side of the third moving block (6303). The third positioning plate (6304) is slidably connected to the upper side of the second positioning plate (6202) via a slide rail.
8. The automated continuous feeding intelligent chamfering device for large-diameter quartz as described in claim 7, characterized in that: The disassembly and assembly mechanism (7) includes a frame (71), which is fixedly installed on the upper side of the third positioning plate (6304). An electric telescopic rod (72) is fixedly installed inside the frame (71). A disassembly and assembly head (74) is fixedly connected to the telescopic end of the electric telescopic rod (72). A sleeve (73) is fixedly connected to the cylinder side wall of the electric telescopic rod (72) through a connecting rod. The sleeve (73) is slidably sleeved on the telescopic end of the electric telescopic rod (72). A grinding wheel (8) is installed on the top of the disassembly and assembly head (74). When the electric telescopic rod (72) retracts, the sleeve (73) squeezes the disassembly and assembly head (74) to achieve the positioning and installation of the grinding wheel (8).