An ACW super-hard grinding wheel dressing tool

Abstract

An ACW super-hard grinding wheel dressing tool belongs to the technical field of grinding wheel dressing, and solves the technical problem of low-cost dressing of super-hard series grinding wheels. The solution is as follows: the device includes a rough dressing tool and a fine dressing tool. The ACW super-hard grinding wheel to be rough-dressed is straddled between the headstock and tailstock of a roll grinder, and the rough dressing grinding wheel and the ACW super-hard grinding wheel are driven to move toward each other in a circumferential direction by transmitting power through a dial, and the ACW super-hard grinding wheel is rough-dressed by the rough dressing grinding wheel; the rough dressing tool stops working and keeps the ACW super-hard grinding wheel rotating. At the same time, the roll grinder is started, and the worktable of the roll grinder reciprocates, thereby driving the fine dressing tool to reciprocate, and the white corundum oilstone on the fine dressing tool is fine-dressed for the ACW super-hard grinding wheel to be fine-dressed. The present invention has a simple structure and is easy to use, improves the grinding quality of the roll, and thereby improves the surface quality of the copper plate and strip, meeting customer requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding wheel dressing, and particularly relates to an ACW superhard grinding wheel dressing tool. Background Art

[0002] In the production process of metal plates and strips, the production of high-end plates and strips is inseparable from rollers with high surface quality. Copper processing companies usually use grinding wheels with abrasives such as silicon carbide and corundum to grind the rollers. However, the grinding wheel inevitably sheds during the grinding process, causing sand marks on the roller surface, affecting the surface quality of the roller, and ultimately reducing the surface quality of high-quality copper alloy strips.

[0003] Superhard series grinding wheels have higher compressive strength, good thermal conductivity, chemical stability, wear resistance and strong cutting ability among known hard materials. They can reduce the phenomenon of sand marks on the surface of rollers. However, there are two main reasons why copper processing manufacturers do not use this series of grinding wheels: 1. The cost of superhard series grinding wheels themselves is relatively high. 2. The abrasive of superhard series grinding wheels has the highest hardness among known hard material abrasives, with a microhardness of 98.5GPa. Therefore, the dressing and application of superhard series grinding wheels is a difficult problem. Summary of the Invention

[0004] The main purpose of the present invention is to overcome the deficiencies in the prior art and solve the technical problem of low-cost dressing of superhard series grinding wheels. The present invention provides an ACW superhard grinding wheel dressing tool.

[0005] The present invention is achieved through the following technical solutions: an ACW super-hard grinding wheel dressing tool, including a rough dressing tool and a fine dressing tool, wherein:

[0006] The rough dressing tooling includes a positioning shaft, a pad, a rough dressing grinding wheel and a clamping nut. A top hole with an angle of 60 degrees is respectively provided on the end faces of both ends of the positioning shaft. The two ends of the positioning shaft are respectively installed on the corresponding 60-degree tops at the head and tail frames of the roll grinder. A shaft shoulder is provided on the middle part of the positioning shaft near the tail end, and an external thread is provided on the positioning shaft between the head end and the shaft shoulder; the rough dressing grinding wheel is installed on the threaded section of the positioning shaft, and the diameter of the positioning shaft is equal to the inner hole diameter of the rough dressing grinding wheel; the two pads are installed on the positioning shaft and are respectively provided at the end faces of the two ends of the rough dressing grinding wheel, and the clamping nut is installed on the threaded section of the positioning shaft, and the clamping nut moves along the axial direction of the positioning shaft to press the rough dressing grinding wheel and the pads on both sides onto the end faces of the shaft shoulder;

[0007] The rough dressing process of ACW super-hard grinding wheel is as follows: the ACW super-hard grinding wheel to be rough-dressed is placed between the headstock and tailstock of the roll grinder, and the power is transmitted by the dial to drive the rough dressing grinding wheel and the ACW super-hard grinding wheel to move toward each other in the circumferential direction. The ACW super-hard grinding wheel is rough-dressed by the rough dressing grinding wheel. The rough dressing process parameters are: the speed of the ACW super-hard grinding wheel is 200-400 UPM, the speed of the rough dressing grinding wheel is 50-150 UPM, the number of passes is 200-500 times, and the rough dressing time is 1h-3h;

[0008] The finishing tool comprises a tool base, a white corundum oilstone and a pressing plate, wherein the tool base comprises a horizontal portion and a vertical portion, and the horizontal portion and the vertical portion are perpendicular to each other and arranged in an L shape;

[0009] A clamping block is provided on the outer wall of the head end of the horizontal portion, a threaded blind hole is provided on the clamping block in the horizontal direction, the fixing piece is provided in a C-shape, the inner concave portion of the fixing piece is detachably mounted on the clamping block, the bolt passes through the side wall of the fixing piece and is threadedly connected to the threaded blind hole, and the lower end portion of the fixing piece is provided with a dovetail groove 1; a screw is provided vertically upward in the middle portion of the horizontal portion, a dovetail groove 2 is provided below the tail end of the horizontal portion, the opening directions of the dovetail groove 1 and the dovetail groove 2 are arranged oppositely, and the tooling base is clamped on the dovetail guide rail of the workbench at the tail end of the roll grinder through the dovetail groove 1 and the dovetail groove 2; a support column is fixedly provided above the tail end of the horizontal portion, the support column is arranged opposite to the vertical portion, and a white corundum oilstone and a first pad are provided above the support column in order from bottom to top;

[0010] The upper portion of the inner wall of the vertical portion is recessed inward to form a clearance groove, a push rod is provided on the side wall of the vertical portion at the position of the clearance groove, a bearing seat is provided on the push rod located in the clearance groove, a pressure plate is arranged across the top of the first pad and the bearing seat, a clamping nut is installed on the screw above the pressure plate, and the clamping nut presses the pressure plate against the first pad and the bearing seat;

[0011] The finishing process of ACW super-hard grinding wheel is as follows: the roll grinder is started, the worktable of the roll grinder reciprocates to drive the reciprocating motion of the finishing tooling, and the white corundum oilstone on the finishing tooling is used to finish the ACW super-hard grinding wheel to be finished. The speed of the ACW super-hard grinding wheel to be finished is 3m / s-10m / s, the feed amount is 0.01-0.05mm, the traverse speed of the worktable is 100-500mm / min, and the number of passes is 10-50.

[0012] Furthermore, the coaxiality of the positioning axis is no more than 0.02 mm.

[0013] Furthermore, the material of the rough dressing grinding wheel is a green carbon grinding wheel with specifications of P300*40*75*GC60L.

[0014] Furthermore, a second pad is provided between the white corundum oilstone and the support column, and the first pad and the second pad are both made of wood.

[0015] The beneficial effects of the present invention are:

[0016] The invention has a simple structure, is easy to use and requires little investment, solves the problem of dressing the ACW super-hard grinding wheel, improves the grinding quality of the roller, and further improves the surface quality of the copper plate and strip, thus meeting the requirements of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the AA surface of the medium finishing tooling.

[0019] In the figure, 1 is the roughing tool, 1-1 is the positioning shaft, 1-2 is the spacer, 1-3 is the roughing grinding wheel, 1-4 is the clamping nut, and 1-5 is the shaft shoulder; 2 is the fine-tuning tool, 2-1 is the tool base, 2-2 is the white corundum oilstone, 2-3 is the pressure plate, 2-4 is the horizontal part, 2-5 is the vertical part, 2-6 is the clamping block, 2-7 is the fixing part, 2-8 is the bolt, 2-9 is the screw, 2-10 is the support column, 2-11 is the first pad, 2-12 is the second pad, 2-13 is the bearing seat, 2-14 is the push rod, and 2-15 is the clamping nut; 3 is the ACW superhard grinding wheel, and 4 is the dovetail guide rail of the workbench. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0021] like Figure 1 and Figure 2 An ACW super-hard grinding wheel dressing tool shown includes a rough dressing tool 1 and a fine dressing tool 2, wherein:

[0022] The rough dressing tool 1 includes a positioning shaft 1-1, a pad 1-2, a rough dressing grinding wheel 1-3 and a clamping nut 1-4. The end faces of the two ends of the positioning shaft 1-1 are respectively provided with top holes with an angle of 60 degrees. The two ends of the positioning shaft 1-1 are respectively installed on the corresponding 60-degree tops at the head and tail ends of the roll grinder. A shoulder 1-5 is provided on the middle part of the positioning shaft 1-1 near the tail end, and an external thread is provided on the positioning shaft 1-1 between the head end and the shoulder 1-5; the rough dressing grinding wheel 1-3 is installed on the threaded section of the positioning shaft 1-1, and the diameter of the positioning shaft 1-1 is equal to the inner hole diameter of the rough dressing grinding wheel 1-3. Diameter; the two pads 1-2 are installed on the positioning shaft 1-1 and are respectively arranged at the end faces of the coarse grinding wheel 1-3. The pads 1-2 prevent the coarse grinding wheel 1-3 from radial displacement and also play a buffering role to prevent the coarse grinding wheel 1-3 from being cracked due to excessive force. The clamping nut 1-4 is installed on the threaded section of the positioning shaft 1-1, and the clamping nut 1-4 moves along the axial direction of the positioning shaft 1-1 to press the coarse grinding wheel 1-3 and the pads 1-2 on both sides onto the end faces of the shaft shoulder 1-5. The clamping nut 1-4 plays a tightening role to prevent the coarse grinding wheel 1-3 from axial displacement;

[0023] The rough dressing process of the ACW superhard grinding wheel 3 is as follows: the ACW superhard grinding wheel 3 to be rough-dressed is arranged between the headstock and tailstock of the roll grinder, and the power is transmitted by the dial to drive the rough dressing grinding wheel 1-3 and the ACW superhard grinding wheel 3 to move toward each other in the circumferential direction, and the ACW superhard grinding wheel 3 is rough-dressed by the rough dressing grinding wheel 1-3. The rough dressing process parameters are: the speed of the ACW superhard grinding wheel 3 is 200-400UPM, the speed of the rough dressing grinding wheel 1-3 is 50-150UPM, the number of passes is 200-500 times, and the rough dressing time is 1h-3h; the main function of the rough dressing tool 1 is to eliminate the gap error of the installation of the rough dressing grinding wheel 1-3, and to correct the geometric shape of the ACW superhard grinding wheel 3 through rough dressing, but the ACW superhard grinding wheel 3 after rough dressing cannot meet the high-quality use requirements of the roll, and it is necessary to further use the fine dressing tool to fine-dress the ACW superhard grinding wheel 3;

[0024] The finishing tool 2 includes a tool base 2-1, a white corundum oilstone 2-2 and a pressing plate 2-3. The tool base 2-1 includes a horizontal portion 2-4 and a vertical portion 2-5. The horizontal portion 2-4 and the vertical portion 2-5 are perpendicular to each other and are arranged in an L shape.

[0025] A clamping block 2-6 is provided on the outer wall of the head end of the horizontal part 2-4, and a threaded blind hole is provided on the clamping block 2-6 in the horizontal direction. The fixing piece 2-7 is set in a C shape, and the inner concave part of the fixing piece 2-7 is detachably mounted on the clamping block 2-6, and the bolt 2-8 passes through the side wall of the fixing piece 2-7 and is threadedly connected to the threaded blind hole, and the lower end of the fixing piece 2-7 is set as a dovetail groove 1; a screw rod 2-9 is provided vertically upward in the middle part of the horizontal part 2-4, and a dovetail groove 2 is provided below the tail end of the horizontal part 2-4. The opening directions of the dovetail groove 1 and the dovetail groove 2 are arranged oppositely, and the tooling base 2-1 is clamped on the dovetail guide rail 4 of the workbench at the tail end of the roll grinder through the dovetail groove 1 and the dovetail groove 2; a support column 2-10 is fixed above the tail end of the horizontal part 2-4, and the support column 2-10 is arranged opposite to the vertical part 2-5. White corundum oilstone 2-2 and the first pad 2-11 are arranged above the support column 2-10 in sequence from bottom to top;

[0026] The upper part of the inner wall of the vertical portion 2-5 is recessed inward to provide a clearance groove, a push rod 2-14 is provided on the side wall of the vertical portion 2-5 at the position of the clearance groove, a bearing seat 2-13 is provided on the push rod 2-14 located in the clearance groove, a pressure plate 2-3 is arranged across the first pad 2-11 and the bearing seat 2-13, a tightening nut 2-15 is installed on the screw 2-9 above the pressure plate 2-3, and the tightening nut 2-15 presses the pressure plate 2-3 against the first pad 2-11 and the bearing seat 2-13;

[0027] The finishing process for the ACW superhard grinding wheel 3 is as follows: the roll grinder is started, and the worktable of the roll grinder reciprocates, thereby driving the reciprocating motion of the finishing fixture 2. The white corundum oilstone 2-2 on the finishing fixture 2 is used to finish the ACW superhard grinding wheel 3 to be finished. The speed of the ACW superhard grinding wheel 3 to be finished is 3m / s-10m / s, the feed rate is 0.01-0.05mm, the worktable traverse speed is 100-500mm / min, and the number of passes is 10-50. After finishing the ACW superhard grinding wheel 3, a test grinding is performed on the roll. The contact surface of the grinding wheel is observed. The darker areas are the high points of the grinding wheel and are focused on finishing until the roll surface quality meets the requirements.

[0028] Furthermore, the coaxiality of the positioning shaft 1 - 1 is no more than 0.02 mm.

[0029] Furthermore, the material of the rough dressing grinding wheel 1-3 is a green carbon grinding wheel with specifications of P300*40*75*GC60L.

[0030] Furthermore, a second pad 2-12 is provided between the white corundum oilstone 2-2 and the support column 2-10. The first pad 2-11 and the second pad 2-12 are both made of wood. The first pad 2-11 and the second pad 2-12 can both play a buffering role and increase friction to prevent the white corundum oilstone 2-2 from moving.

[0031] The use process of the present invention is as follows:

[0032] First, the ACW superhard grinding wheel 3 is rough-dressed: the ACW superhard grinding wheel 3 to be rough-dressed is placed between the headstock and tailstock of the roll grinder, and the rough-dressing grinding wheel 1-3 and the ACW superhard grinding wheel 3 are driven to move toward each other in the circumferential direction by transmitting power through the dial. The ACW superhard grinding wheel 3 is rough-dressed by the rough-dressing grinding wheel 1-3. The rough-dressing process parameters are: the speed of the ACW superhard grinding wheel 3 is 200-400 UPM, the speed of the rough-dressing grinding wheel 1-3 is 50-150 UPM, the number of passes is 200-500 times, and the rough-dressing time is 1h-3h;

[0033] Secondly, the ACW superhard grinding wheel 3 after rough dressing is fine-dressed: the rough dressing tooling 1 stops working and keeps the ACW superhard grinding wheel 3 rotating. At the same time, the roll grinder is started, and the worktable of the roll grinder reciprocates, thereby driving the fine-dressing tooling 2 to reciprocate. The white corundum oilstone 2-2 on the fine-dressing tooling 2 fine-dresses the ACW superhard grinding wheel 3 to be fine-dressed. The fine-dressing process parameters are: the speed of the ACW superhard grinding wheel 3 to be fine-dressed is 3m / s-10m / s, the feed amount is 0.01-0.05mm, the worktable lateral movement speed is 100-500mm / min, the number of passes is 10-50 times, and the fine-dressing of the ACW superhard grinding wheel 3 is completed.

[0034] The invention solves the problem of sand mark removal of the grinding wheel during roller grinding in the production process, thereby improving the surface quality of the copper alloy strip. The device has a simple structure and is easy to use and operate, making it a practical device with high cost performance.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An ACW super-hard grinding wheel dressing tool, comprising a rough dressing tool (1) and a fine dressing tool (2), characterized in that: The roughing tool (1) comprises a positioning shaft (1-1), a spacer (1-2), a roughing grinding wheel (1-3) and a clamping nut (1-4); a top hole with an angle of 60 degrees is respectively provided on the end faces of both ends of the positioning shaft (1-1); both ends of the positioning shaft (1-1) are respectively mounted on the 60-degree tops corresponding to the head and tail frames of the roll grinder; a shoulder (1-5) is provided on the middle part of the positioning shaft (1-1) near the tail end; an external thread is provided on the positioning shaft (1-1) between the head end and the shoulder (1-5); the roughing grinding wheel (1-3 ) is installed on the threaded section of the positioning shaft (1-1), and the diameter of the positioning shaft (1-1) is equal to the inner hole diameter of the roughing grinding wheel (1-3); the two pads (1-2) are installed on the positioning shaft (1-1) and are respectively arranged at the end faces of both ends of the roughing grinding wheel (1-3); the clamping nut (1-4) is installed on the threaded section of the positioning shaft (1-1), and the clamping nut (1-4) moves along the axial direction of the positioning shaft (1-1) to press the roughing grinding wheel (1-3) and the pads (1-2) on both sides onto the end face of the shaft shoulder (1-5); The rough dressing process of the ACW superhard grinding wheel (3) is as follows: the ACW superhard grinding wheel (3) to be rough-dressed is placed between the headstock and tailstock of the roller grinder, and the power is transmitted by the dial to drive the rough dressing grinding wheel (1-3) and the ACW superhard grinding wheel (3) to move toward each other in the circumferential direction, and the ACW superhard grinding wheel (3) is rough-dressed by the rough dressing grinding wheel (1-3). The rough dressing process parameters are: the rotation speed of the ACW superhard grinding wheel (3) is 200-400UPM, The rotation speed of the rough dressing grinding wheel (1-3) is 50-150 UPM, the number of passes is 200-500 times, and the rough dressing time is 1 hour to 3 hours; the finishing tool (2) includes a tool base (2-1), a white corundum oilstone (2-2) and a pressure plate (2-3); the tool base (2-1) includes a horizontal part (2-4) and a vertical part (2-5); the horizontal part (2-4) and the vertical part (2-5) are perpendicular to each other and are arranged in an L shape; A clamping block (2-6) is provided on the outer wall of the head end of the horizontal portion (2-4), a threaded blind hole is provided on the clamping block (2-6) in the horizontal direction, the fixing member (2-7) is provided in a C-shape, the inner concave portion of the fixing member (2-7) is detachably mounted on the clamping block (2-6), a bolt (2-8) passes through the side wall of the fixing member (2-7) and is threadedly connected to the threaded blind hole, and the lower end of the fixing member (2-7) is provided with a dovetail groove; a screw rod (2-9) is provided vertically upward in the middle of the horizontal portion (2-4), and the horizontal portion A dovetail groove 2 is provided below the tail end of (2-4), and the opening directions of the dovetail groove 1 and the dovetail groove 2 are arranged opposite to each other. The tooling base (2-1) is clamped on the dovetail guide rail (4) of the workbench at the tail end of the roller grinder through the dovetail groove 1 and the dovetail groove 2; a support column (2-10) is fixedly provided above the tail end of the horizontal portion (2-4), and the support column (2-10) is arranged opposite to the vertical portion (2-5). A white corundum oilstone (2-2) and a first pad (2-11) are arranged above the support column (2-10) in order from bottom to top; The upper portion of the inner wall of the vertical portion (2-5) is recessed inward to provide a clearance groove, a push rod (2-14) is provided on the side wall of the vertical portion (2-5) at the position of the clearance groove, a bearing seat (2-13) is provided on the push rod (2-14) located in the clearance groove, a pressure plate (2-3) is arranged across the first pad (2-11) and the bearing seat (2-13), a clamping nut (2-15) is installed on the screw (2-9) above the pressure plate (2-3), and the clamping nut (2-15) presses the pressure plate (2-3) against the first pad (2-11) and the bearing seat (2-13); The finishing process of the ACW super-hard grinding wheel (3) is as follows: the roll grinder is started, the worktable of the roll grinder reciprocates to drive the finishing tool (2) to reciprocate, and the white corundum oilstone (2-2) on the finishing tool (2) finishes the ACW super-hard grinding wheel (3) to be finished, the speed of the ACW super-hard grinding wheel (3) to be finished is 3m / s-10m / s, the feed amount is 0.01-0.05mm, the worktable lateral movement speed is 100-500mm / min, and the number of passes is 10-50 times.

2. The ACW super-hard grinding wheel dressing tool according to claim 1, characterized in that: The coaxiality of the positioning shaft (1-1) is no greater than 0.02 mm.

3. The ACW super-hard grinding wheel dressing tool according to claim 1, characterized in that: The material of the rough dressing grinding wheel (1-3) is a green carbon grinding wheel with a specification of P300*40*75*GC60L.

4. The ACW super-hard grinding wheel dressing tool according to claim 1, characterized in that: A second pad (2-12) is provided between the white corundum oilstone (2-2) and the support column (2-10), and the first pad (2-11) and the second pad (2-12) are both made of wood.

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