CN108890409B - High-precision hard material cutter grinding device and grinding processing method - Google Patents
High-precision hard material cutter grinding device and grinding processing method Download PDFInfo
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- CN108890409B CN108890409B CN201810931282.5A CN201810931282A CN108890409B CN 108890409 B CN108890409 B CN 108890409B CN 201810931282 A CN201810931282 A CN 201810931282A CN 108890409 B CN108890409 B CN 108890409B
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- 238000003754 machining Methods 0.000 claims description 15
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
Abstract
The invention belongs to the technical field of tool grinding, and particularly relates to a high-precision hard material tool grinding device and a grinding method, wherein the high-precision hard material tool grinding device comprises: a work table; the clamping mechanism is connected with the rotary mechanism and is used for clamping and fixing the cutter and driving the cutter to rotate around the horizontal shaft, the feeding mechanism comprises a fine adjustment feeding assembly and a quick feeding assembly, and the rotary mechanism is connected with the fine adjustment feeding assembly and is used for driving the cutter to do rotary motion; the driving mechanism can drive the grinding wheel to rotate around the horizontal shaft, and the swinging mechanism is arranged on the workbench and connected with the grinding wheel seat to drive the grinding wheel to move back and forth along the second horizontal direction so as to grind the cutter back and forth. The high-precision hard material cutter grinding device provided by the invention has the advantages of simple overall structure, low device cost and high quality of processed products.
Description
Technical Field
The invention belongs to the technical field of tool grinding, and particularly relates to a high-precision hard material tool grinding device and a grinding method.
Background
The hard material cutter has the advantages of high hardness, good thermal conductivity, small thermal expansion, high chemical stability and the like, and is widely applied to a plurality of cutting processes, such as milling, hard state processing, high-speed cutting and the like. The machining process of the hard material cutter mainly comprises cutting of a hard material composite sheet, cutter body manufacturing, welding, sharpening and the like, wherein the sharpening is a key process for determining the geometric shape and the dimensional precision of the cutter, the machining precision of the existing tool grinding machine is low, the shafting configuration is simple, the hard material cutter with high precision is difficult to obtain, and the grinding machine for the hard material cutter with high precision is mainly a direct outsourcing machine tool, but the structure is complex, the accessory cost is high, and the overall machining cost is high.
Disclosure of Invention
The invention aims to provide a high-precision hard material cutter grinding device and a grinding processing method, and aims to solve the technical problems of complex structure and high cost of grinding equipment in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: a high precision hard material tool grinding apparatus comprising:
a work table;
the clamping mechanism is connected with the slewing mechanism and is used for clamping and fixing the cutter and driving the cutter to rotate around a horizontal shaft, the feeding mechanism comprises a quick feeding assembly and a fine adjustment feeding assembly, the quick feeding assembly is arranged on the workbench and is used for driving the cutter to move to the position near a machining position along a first horizontal direction, the fine adjustment feeding assembly is connected with the quick feeding assembly and is used for driving the cutter to move to the machining position and grinding the cutter, and the slewing mechanism is connected with the fine adjustment feeding assembly and is used for driving the cutter to perform slewing motion;
the grinding wheel mechanism comprises a grinding wheel seat, a driving mechanism arranged on the grinding wheel seat and a grinding wheel connected with the driving mechanism, the driving mechanism can drive the grinding wheel to rotate around a horizontal shaft, and the swinging mechanism is arranged on the workbench and connected with the grinding wheel seat to drive the grinding wheel to move along a second horizontal direction so as to grind the cutter back and forth.
Further, the quick feeding assembly comprises a guide rail arranged on the workbench, a sliding block connected with the guide rail in a sliding manner and a driving air cylinder connected with the sliding block and used for driving the sliding block to slide along the guide rail so as to drive the slewing mechanism to move along the first horizontal direction, and the extending direction of the length of the guide rail is parallel to the first horizontal direction and perpendicular to the second horizontal direction.
Further, a sliding rail is arranged on the sliding block, and the fine adjustment feeding assembly comprises a supporting table connected to the sliding rail in a sliding manner and a fine adjustment hand wheel connected with the supporting table and used for driving the supporting table to move along the first horizontal direction so as to grind the cutter; the rotary mechanism comprises a hollow rotary table fixed on the supporting table, a rotary shaft arranged on the rotary table, the top of the rotary table stretches out of the rotary table, a first motor connected with the rotary shaft and used for driving the rotary shaft to rotate, and the rotary shaft is fixedly connected with the clamping mechanism.
Further, the fixture is fixed in including the connection the fixing base of pivot, setting are in just be used for the clamping to fix on the fixing base the tool of cutter and set up on the fixing base and with the second motor of tool linkage, the second motor can drive the tool for the fixing base is rotatory around the horizontal axis.
Further, the jig is a tungsten steel bar jig, the tungsten steel bar jig comprises a clamping taper sleeve body fixed on the fixing seat, and a clamping hole for clamping and fixing a cutter handle of the cutter is formed in the axial center of the clamping taper sleeve body.
Further, the swing mechanism comprises a base fixed on the workbench, a third motor arranged on the base, a first sliding table which is connected with the base in a sliding manner and is connected with an output shaft of the third motor, a second sliding table which is connected with the top surface of the first sliding table in a sliding manner, an eccentric mechanism arranged on the first sliding table and a connecting rod connected with the eccentric mechanism, one end of the connecting rod is movably connected with the second sliding table, the grinding wheel mechanism is fixed on the top surface of the second sliding table, and the eccentric mechanism drives the second sliding table to move back and forth through the connecting rod so that the grinding wheel mechanism can swing reciprocally.
Further, the high-precision hard material cutter grinding device further comprises an image acquisition mechanism, a display and a multi-multiplying-power adjusting knob, wherein the image acquisition mechanism is arranged on the workbench and used for acquiring the relative position information of the cutter and the grinding wheel, the display is connected with the image acquisition mechanism and used for displaying the image information acquired by the image acquisition mechanism, and the multi-multiplying-power adjusting knob is connected with the image acquisition mechanism and used for adjusting the acquisition mode of the image acquisition mechanism to be suitable for the relative positions of the cutter and the grinding wheel, which are different.
The invention provides another technical scheme that: a grinding method utilizing the high-precision hard material cutter grinding device comprises the following steps:
clamping and fixing the cutter on the clamping mechanism;
completing tool setting by adjusting the quick feed assembly and the fine adjustment feed assembly, and moving the tool to a processing position;
setting working parameters of the clamping mechanism and the grinding wheel mechanism, and controlling the fine adjustment feeding assembly to drive the clamping mechanism to drive the cutter to move a preset distance towards the grinding wheel mechanism so as to finish single-step feeding grinding;
and controlling the swinging mechanism to drive the grinding wheel mechanism to move back and forth for a preset number of times, so that the cutter is subjected to grinding processing with the same feeding amount every time the cutter completes single-step feeding grinding.
Further, the control of the swing frequency and the swing amplitude of the grinding wheel mechanism is achieved by controlling the driving frequency and the driving distance of the third motor to drive the first sliding table.
Further, the single-step feeding amount is adjusted to be 1um by rotating the fine adjustment hand wheel by a preset angle, and the third motor drives the grinding wheel shaft to move back and forth along the second horizontal direction for 2-4 times when the cutter is fed for 1um each time, so that the cutter is further ground for 1um.
The invention has the beneficial effects that: according to the high-precision hard material cutter grinding device, the fine adjustment feeding assembly and the rapid feeding assembly are arranged, the cutter can be rapidly adjusted, the cutter is driven to move through the fine adjustment feeding assembly to perform single-step precise grinding of the cutter, then the grinding wheel mechanism is driven to swing back and forth through the swinging mechanism, the cutter can be further precisely ground, the whole structure is simple, the device cost is low, the grinding precision can be greatly improved through the cooperation of the fine adjustment feeding assembly and the swinging mechanism, the quality of a processed product is high, and the cutter edge can achieve a matte effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a high-precision hard material tool grinding device according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a portion of the high precision hard material tool grinding apparatus of FIG. 1;
FIG. 3 is a schematic diagram showing a partial perspective view of the high-precision hard material tool grinding device shown in FIG. 1;
FIG. 4 is a schematic perspective view of a portion of a fine adjustment feed mechanism in the high precision hard material tool grinding apparatus of FIG. 1;
FIG. 5 is a schematic top view of a portion of the fine feed mechanism of the high precision hard material tool grinding unit of FIG. 1;
FIG. 6 is a schematic perspective view of a rocking mechanism and a grinding wheel mechanism in the high precision hard material tool grinding apparatus of FIG. 1;
FIG. 7 is a schematic perspective view of the swing mechanism shown in FIG. 6;
FIG. 8 is a partial perspective view of the swing mechanism of FIG. 6;
FIG. 9 is a schematic view of a portion of the swing mechanism of FIG. 6 in an exploded configuration;
FIG. 10 is a schematic side view of a portion of the swing mechanism of FIG. 6;
fig. 11 is a block flow diagram of a method for grinding a high-precision hard material tool according to an embodiment of the present invention.
Wherein, each reference sign in the figure:
10-workbench 100-clamping mechanism 110-fixing seat
120-jig 130-driven wheel 140-synchronous belt
200-rotation mechanism 210-rotation table 220-rotation shaft
30-feed mechanism 310-quick feed assembly 320-fine feed assembly
311-guide rail 312-slide block 321-slide rail
322-supporting table 323-fine adjustment hand wheel 313-grating ruler
330-housing 340-connection 324-drive shaft
331-driving gear 350-worm 351-driven gear
352-driving part 360-screw 361-turbine
400-grinding wheel mechanism 410-grinding wheel seat 420-driving mechanism
430-grinding wheel 431-grinding wheel shaft 500-swinging mechanism
510-base 520-third motor 511-first sliding table
512-second sliding table 513-connecting piece 514-connecting rod
515-first slide rail 516-second slide rail 530-mounting box
540-gear motor 550-eccentric 560-guide
561-stopper 570-adjusting block 580-sphere
581-connecting section 582-spacer 590-rod end joint bearing
610-image acquisition mechanism 611-support 612-adjusting plate
613-mounting rack 614-CCD monitoring component 615-optical lens cone
616-CCD camera 620-bamboo joint pipe 630-waterproof water return disc
640-waterproof telescopic shield 650-LED lamp 660-operation panel
670-display.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 2, the high-precision hard material tool grinding device provided by the embodiment of the invention comprises a workbench 10, a clamping mechanism 100, a slewing mechanism 200, a feeding mechanism 30, a grinding wheel mechanism 400 and a swinging mechanism 500.
The clamping mechanism 100 is connected with the turning mechanism 200 and is used for clamping and fixing the tool and driving the tool to rotate around the horizontal shaft, the feeding mechanism 30 comprises a rapid feeding component 310 which is arranged on the workbench 10 and is used for driving the tool to move to the vicinity of the processing position along the first horizontal direction, and a fine adjustment feeding component 320 which is connected with the rapid feeding component 310 and is used for driving the tool to move to the processing position and grinding the tool, and the turning mechanism 200 is connected with the fine adjustment feeding component 320 and is used for driving the tool to perform turning motion. That is, when the quick feed assembly 310 drives the swing mechanism 200 to move, the clamping mechanism 100 moves along with the swing mechanism 200, so as to drive the tool to quickly move along the first horizontal direction (the F1 direction in fig. 1) to the vicinity of the processing position; the fine adjustment feed assembly 320 drives the swing mechanism 200 and the clamping mechanism 100 to move together, so that the tool moves to the machining position for precise grinding machining.
As shown in fig. 6, the grinding wheel mechanism 400 includes a grinding wheel seat 410, a driving mechanism 420 mounted on the grinding wheel seat 410, and a grinding wheel 430 connected with the driving mechanism 420, wherein the driving mechanism 420 can drive the grinding wheel 430 to rotate around a horizontal axis, the grinding wheel 430 is fixed on a grinding wheel shaft 431, the grinding wheel shaft 431 is rotatably arranged on the grinding wheel seat 410, one end of the grinding wheel shaft 431 is sleeved with a driven wheel, an output shaft sleeve of the driving mechanism 420 is provided with a driving wheel, and a synchronous belt is connected between the driven wheel and the driving wheel, so that the grinding wheel shaft 431 and the grinding wheel 430 can be driven to rotate. The swing mechanism 500 is disposed on the table 10 and connected to the grinding wheel base 410 to drive the grinding wheel 430 to move back and forth along the second horizontal direction (F2 direction in fig. 1), thereby grinding the tool back and forth. The swing mechanism 500 drives the grinding wheel mechanism 400 to move back and forth after each time the tool is precisely ground, so as to further precisely grind the tool back and forth.
The high accuracy hard material cutter grinding device that this embodiment provided owing to be provided with fine setting feed assembly 320 and quick feed assembly 310, the cutter can carry out quick tool setting, drive the cutter through fine setting feed assembly 320 and remove the accurate grinding of single step that can carry out the cutter, then drive grinding wheel mechanism 400 back and forth swing through swing mechanism 500, can further carry out accurate grinding to the cutter again, and overall structure is simple, the device is with low costs, and fine setting feed assembly 320 and swing mechanism 500's cooperation is used and can be improved grinding precision greatly, the product quality of processing is high, the cutter cutting edge can reach the inferior light effect.
In an embodiment, as shown in fig. 1 to 3, the fast-feeding assembly 310 includes a guide rail 311 disposed on the table 10, a slider 312 slidably connected to the guide rail 311, and a driving cylinder connected to the slider 312 and used for driving the slider 312 to slide along the guide rail 311 to drive the swing mechanism 200 to move along the F1 direction, wherein the length of the guide rail 311 extends in a direction parallel to the F1 direction and perpendicular to the F2 direction.
Further, the workbench 10 is provided with a sliding rail 321, and the fine adjustment feeding assembly 320 comprises a supporting table 322 slidably connected to the sliding rail 321 and a fine adjustment hand wheel 323 connected with the supporting table 322 and used for driving the cutter to move along the first horizontal direction so as to grind the cutter; the revolving mechanism 200 comprises a hollow revolving platform 210 fixed on a supporting platform 322, a rotating shaft 220 arranged on the revolving platform 210 and the top of which extends out of the revolving platform 210, and a first motor (not shown) connected with the rotating shaft 220 and used for driving the rotating shaft 220 to rotate, wherein the rotating shaft 220 is fixedly connected with the clamping mechanism 100.
As shown in fig. 2 and 3, two guide rails 311 are disposed in parallel on two sides of the workbench 10, each guide rail 311 is slidably connected with a slide block 312, a slide rail 321 is fixedly connected to the top surface of each slide block 312, the bottom surface of the support table 322 is slidably connected to the slide rails 321 on two sides, a fine adjustment hand wheel 323 is connected to one side of the support table 322 through a connecting piece, and the support table 322 can be driven to slide along the slide rails 321 when the fine adjustment hand wheel 323 is rotated. The workbench 10 is also provided with a high-precision grating 313 to detect the moving distance of the support table 322, the fine adjustment hand wheel 323 is provided with scales, and the fine adjustment hand wheel 323 can be rotated by a preset angle according to the requirement of machining precision.
As shown in fig. 4 and 5, a casing 330 and a connecting portion 340 are connected to a side of the support stand 322 away from the swing mechanism 500, a fine adjustment hand wheel 323 is provided with a driving shaft 324, one end of the driving shaft 324 extends into the casing 330 and is connected with a driving gear 331, a worm 350 is rotatably mounted in the casing 330, one end of the worm 350 is connected with a driven gear 351 meshed with the driving gear 331, a driving portion 352 is formed at the other end of the worm 350, an external thread is formed at the outer circumference of the driving portion 352, a screw rod 360 is rotatably provided in the casing 330, one end of the screw rod 360 is in screw connection with the connecting portion 340, the other end of the screw rod 360 is connected with a turbine 361, and the turbine 361 is in screw fit with the external thread of the driving portion 352. When the fine adjustment hand wheel 323 is rotated, the driving gear 331 of the driving shaft 324 drives the driven gear 351 to rotate, the worm 350 is rotated, the driving portion 352 drives the turbine 361, the screw 360 rotates around the housing 330 along the axial direction of the screw 360, and the connecting portion 340 is further driven to move in the first direction, so that the supporting table 322 can be driven to move in the first direction, and fine adjustment feeding of the cutter is completed.
As shown in fig. 2 and 3, the clamping mechanism 100 includes a fixed seat 110 connected and fixed with the rotating shaft 220, a fixture 120 movably disposed on the fixed seat 110 and used for clamping and fixing a tool, and a second motor (not shown) disposed on the fixed seat 110 and linked with the fixture 120, where the second motor can drive the fixture 120 to rotate around a horizontal axis relative to the fixed seat 110.
In a specific embodiment, the jig 120 is a tungsten steel bar jig, and the tungsten steel bar jig includes a clamping taper sleeve body fixed on the fixing seat 110, a clamping hole for clamping a tool holder for fixing a tool is formed in the axial center of the clamping taper sleeve body, and a groove for clamping the tool holder is formed in the inner wall of the clamping hole. The front end of the clamping taper sleeve body is integrally conical, the rear end of the clamping taper sleeve body is connected with a driven wheel 130, a second motor is fixed at the top of the fixed seat 110 and is located right above the clamping taper sleeve body, an output shaft of the second motor is connected with a driving wheel, and a synchronous belt 140 is connected between the driving wheel and the driven wheel 130, so that the second motor can drive the clamping taper sleeve body to rotate around a horizontal shaft.
In an embodiment, as shown in fig. 2 and 6 to 10, the swinging mechanism 500 includes a base 510 fixed on the workbench 10, a third motor 520 provided on the base 510, a first sliding table 511 slidably connected on the base 510, a second sliding table 512 slidably connected on the top surface of the first sliding table 511, an eccentric mechanism provided on the first sliding table 511, and a connecting rod 514 connected with the eccentric mechanism, one end of the connecting rod 514 is connected with the second sliding table 512, the grinding wheel mechanism 400 is fixed on the top surface of the second sliding table 512, an output shaft of the third motor 520 is connected and fixed with the first sliding table 511 to drive the first sliding table 511 to slide, and the third motor 520 drives the first sliding table 511 to realize reciprocating swinging through the eccentric mechanism and the connecting rod 514 when sliding on a slide rail.
Specifically, the extending direction of the length of the base 510 is perpendicular to the first horizontal direction, the base 510 encloses a structure similar to a housing, the top of the base is open, the third motor 520 is installed and fixed in a cavity enclosed by the base 510, and the grinding wheel seat 410 of the grinding wheel mechanism 400 is fixedly connected to the top surface of the second sliding table 512. The base 510 is provided with first slide rail 515 along length direction's top both sides, and first slip table 511 is provided with second slide rail 516 through first slide rail 515 with base 510 sliding connection through first slide rail 515, and second slip table 512 is provided with first slip table 511 sliding connection through first slide rail 515, and length direction of first slide rail 515 is parallel with length direction of second slide rail 516, and the length of first slip table 511 is greater than the length of second slip table 512, and one side that first slip table 511 kept away from third motor 520 stretches out a part for second slip table 512.
The eccentric mechanism comprises a mounting box 530 fixed on the first sliding table 511, a gear motor 540 fixed on the mounting box 530, an eccentric wheel 550 connected with an output shaft of the gear motor 540, a guide piece 560 connected and fixed on the bottom surface of the eccentric wheel 550 and provided with a dovetail guide rail, an adjusting block 570 connected with the guide piece 560 in a sliding manner, and a rod end joint bearing 590 connected with the adjusting block 570, wherein the gear motor 540 drives the eccentric wheel 550 and the guide piece 560 to rotate, the adjusting block 570 slides back and forth in the guide piece 560, and then drives the rod end joint bearing 590 and the connecting rod 514 to swing so as to drive the second sliding table 512 to slide back and forth on the first sliding table 511. The guide member 560 is hollow and has an opening at the bottom, a dovetail rail is formed in the guide member 560, an inlet for the adjustment block 570 to slide in is formed in the side surface of the guide member 560, a limiting block 561 is detachably connected to the guide member 560 at the inlet, and a supporting column (not shown) is convexly arranged on one side of the limiting block 561 facing the guide member 560 for limiting the maximum sliding travel of the adjustment block 570 on the dovetail rail. One end of the rod end joint bearing 590 is connected with the connecting rod 514, the other end of the rod end joint bearing 590 is provided with a spherical sliding bearing, a matched sphere 580 is movably embedded in the spherical sliding bearing, the sphere 580 can rotate in the spherical sliding bearing, the top end of the sphere 580 is provided with a connecting section 581 extending out, the connecting section 581 is fixedly connected with the bottom surface of the adjusting block 570, a spacer 582 is sleeved outside the connecting section 581, the spacer 582 can limit the maximum angle of the sphere 580 relative to the spherical sliding bearing, one end of the connecting rod 514 far away from the rod end joint bearing 590 is movably connected with the second sliding table 512 through the connecting piece 513, and thus, a crank sliding block structure is formed between the first sliding table 511 and the second sliding table 512. The third motor 520 drives the first sliding table 511 to move, so that the swing amplitude of the second sliding table 512 can be adjusted, and further the swing amplitude of the grinding wheel mechanism 400 can be adjusted.
In this embodiment, as shown in fig. 1 to 3, the high-precision hard material tool grinding apparatus further includes an image capturing mechanism 610 provided on the table 10 for capturing relative position information of the tool and the grinding wheel 430, a display 670 connected to the image capturing mechanism 610 for displaying image information captured by the image capturing mechanism 610, and a multi-magnification adjustment knob (not shown) connected to the image capturing mechanism 610 for adjusting the capturing mode of the image capturing mechanism 610 to a relative position suitable for a difference between the tool and the grinding wheel 430.
Specifically, the image capturing mechanism 610 includes a bracket 611 connected to a side wall of the support stand 322, and a CCD monitoring assembly 614 provided on the bracket 611, i.e., the image capturing mechanism 610 moves with the movement of the support stand 322. The end of the support 611 near the top is provided with an adjusting plate 612, the adjusting plate 612 comprises a bottom plate connected and fixed with the support 611 and a top plate movably connected with the bottom plate, the top plate can move in a horizontal plane in an adjusting manner relative to the bottom plate so as to adjust the horizontal position of the CCD monitoring assembly 614, and a mounting rack 613 is fixed on the top surface of the top plate. The CCD monitoring assembly 614 comprises an optical barrel 615 arranged on a mounting frame 613 and a CCD camera 616 arranged on the top of the optical barrel 615, wherein the CCD camera 616 can be externally connected with a computer to realize on-line monitoring of the position and the geometric dimension of a cutter, and the position and the geometric dimension of the cutter can be compared with a preset shape by scaling and displaying the cutter image on a display 670.
A spray tank (not shown) is placed near the work table 10, the spray tank is connected with a bamboo joint pipe 620 through a pipe, cutting fluid is sprayed to a processing position through the bamboo joint pipe 620, a waterproof water return disc 630 is formed on Zhou Cewei of the support table 322, the waterproof water return disc 630 is connected with a liquid discharge pipe to discharge the cutting fluid, and a waterproof telescopic shield 640 is arranged on one side close to the swinging mechanism 500 so as to prevent the cutting fluid from splashing outside. The table 10 may also be provided with an illumination mechanism, such as a rotatable bracket on the table 10, with an LED light 650 connected to the end of the bracket to illuminate the tool and tool setting area for ease of viewing.
The setting of the multiple-magnification adjusting knob can also facilitate adjusting tool setting, specifically, in the process of tool setting operation before machining, the rapid feeding mechanism drives the tool to the position near machining, the image acquisition mechanism 610 can be adjusted to a low-magnification acquisition mode through the multiple-magnification adjusting knob, the relative position between the grinding wheel 430 and the tool can be sufficiently observed on the display 670, the image acquisition mechanism 610 can be adjusted to a high-magnification acquisition mode through the multiple-magnification adjusting knob in the process of adjusting the slow feeding of the tool by the fine adjusting hand wheel 323, the relative position between the grinding wheel 430 and the tool can be sufficiently observed on the display 670, so that the judgment of the relative position between the tool and the grinding wheel 430 in different adjustment modes can be facilitated, the setting of the multiple-magnification adjusting knob facilitates the rapid and slow adjustment operation on the movement of the tool in the tool setting operation, and the tool setting operation is simpler, more convenient and faster.
The table 10 is also connected with an operation panel 660, parameters of each mechanism can be set through the operation panel 660, and after the tool setting operation is performed through the image acquisition mechanism 610, the feeding position can be set to 0 point on the operation panel 660, so that each feeding parameter can be directly known during the grinding operation, and conversion is not required.
In addition, when the abrasion of the grinding wheel 430 is found during the grinding process, the grinding wheel 430 may be repaired by using a cutter bar, specifically, a PCD blade is clamped at one end of the cutter bar, a cutter is removed from the jig 120, the other end of the cutter bar is clamped and fixed on the jig 120, then the grinding wheel 430 is ground by a feeding mechanism, and the repair condition is observed in the display 670 until the repair of each abrasion part of the grinding wheel 430 is completed.
As shown in fig. 1 to 11, the grinding method of the high-precision hard material cutter grinding device provided by the embodiment of the invention comprises the following steps:
s100: clamping and fixing the cutter on the clamping mechanism 100;
s200: completing tool setting by adjusting the fast feed assembly 310 and the fine feed assembly 320, and moving the tool to a machining position;
s300: setting working parameters of the clamping mechanism 100 and the grinding wheel mechanism 400, and controlling the fine adjustment feeding assembly 320 to drive the clamping mechanism 100 to drive the cutter to move a preset distance towards the grinding wheel mechanism 400 so as to finish single-step feeding grinding;
s400: the rocking mechanism is controlled to drive the grinding wheel mechanism 400 to move back and forth a predetermined number of times, so that the grinding process of the same feeding amount is performed each time the cutter completes the single-step feeding grinding.
According to the high-precision hard material cutter grinding method provided by the embodiment of the invention, the quick tool setting can be performed through the quick feeding component 310 and the fine adjustment feeding component 320, the single-step precise grinding of the cutter can be performed through driving the cutter to move through the fine adjustment feeding component 320, then the grinding wheel mechanism 400 is driven to swing back and forth through the swinging mechanism 500, the precise grinding of the cutter can be further performed, the operation is simple, the device cost is low, the grinding precision can be greatly improved through the cooperation of the fine adjustment feeding component 320 and the swinging mechanism 500, and the quality of a product obtained through grinding processing is high.
In step S100, the high-precision tungsten steel bar jig 120 is adopted, so that the shank of the tool can be inserted into the clamping taper sleeve, the clamping of the tool can be rapidly completed, and the clamping and positioning precision is high.
In step S200, the operation from the start to the tool setting is specifically: adjusting the swing amplitude of the grinding wheel shaft 431, adjusting the swing amplitude of the rotating shaft 220 of the swing mechanism 200 at the original position (the axial direction of the jig 120 is perpendicular to the first direction), resetting the supporting table 322 to the original position, installing a tool to be ground on the jig 120, adjusting the jig 120 to enable the rotating runout value of a bar to be within 1um, driving the tool to the standard machining position through a cylinder, inputting the angle of the tool to be machined into the swing mechanism 200 at the operation panel 660 according to the angle of the tool to be machined, pressing a corresponding driving button, rotating the swing mechanism 200 to the set position, quickly positioning the grinding wheel shaft 431 at a certain position, adjusting the grinding wheel shaft 431 to be slowly fed to the vicinity of the tool setting position, and then combining the position of the tool to be observed on the display 670 through the fine-tuning hand wheel 323 and the image acquisition mechanism 610 until the tool setting operation is completed. After the completion of the tool setting, the feeding position is set to 0 on the operation panel 660.
In step S300, parameters of other mechanisms can be set by controlling the operation panel 660 or manually adjusting, the jig 120 can rotate in forward and reverse directions, the rotation speed is adjustable between 0 and 200r/S, for example, 80r/S, 180r/S and 200r/S, the end face runout and the radial runout of the grinding wheel shaft 431 are both within 2um, the rotation speed of the grinding wheel shaft 431 is adjustable within 0 to 3000r/S, for example, 1000r/S, 2500r/S and 3000r/S, the swing frequency of the grinding wheel shaft 431 is adjustable within 0 to 100Hz, for example, 20Hz, 60Hz and 100Hz, and the swing amplitude is adjustable within 0 to 10mm, for example, 2mm, 6mm and 10mm; the swing shaft is positioned in the range of 0-80mm, such as 20mm, 50mm and 80mm.
Specifically, the third motor 520 is controlled to control the driving frequency and the driving distance of the first sliding table 515, so as to control the swinging frequency and the swinging amplitude of the grinding wheel mechanism 400, further control the precision of regrinding after single-step feeding grinding, and realize the processing of high-precision grinding.
Preferably, the feeding amount of the single-step feed grinding is adjusted to 1um by rotating the fine adjustment hand wheel 323 by a predetermined angle, and the third motor 520 drives the grinding wheel shaft 431 to move back and forth in the second horizontal direction 2 to 4 times every time the tool is fed by 1um for grinding, so that the tool is fed by 1um again. For example, when the diamond tool is ground, each parameter is set, after the tool setting is completed, when the tool is ground, each time the fine adjustment hand wheel 323 rotates for about 6 degrees, the single-step feeding amount of the tool is 1um, the grinding wheel shaft 431 is driven by the swinging mechanism to swing for 2-4 times, the tool can be further fed for 1um, the precision of the edge cutting angle of the diamond tool obtained after the grinding is within plus or minus 0.1 degree, the radius R of the edge angle is within 0.5um, the outer diameter of the edge is within plus or minus 1um, the deviation of the upper edge line and the lower edge line is within 1um, the surface finish of the edge of the diamond tool can reach the sub-optical path degree, the precision of the diamond tool after the machining is high, and the service life of the diamond tool is longer.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A high-precision hard material cutter grinding device is characterized in that: comprising the following steps:
a work table;
the clamping mechanism is connected with the slewing mechanism and is used for clamping and fixing the cutter and driving the cutter to rotate around a horizontal shaft, the feeding mechanism comprises a quick feeding assembly and a fine adjustment feeding assembly, the quick feeding assembly is arranged on the workbench and is used for driving the cutter to move to the position near a machining position along a first horizontal direction, the fine adjustment feeding assembly is connected with the quick feeding assembly and is used for driving the cutter to move to the machining position and grinding the cutter, and the slewing mechanism is connected with the fine adjustment feeding assembly and is used for driving the cutter to perform slewing motion;
the grinding wheel mechanism comprises a grinding wheel seat, a driving mechanism arranged on the grinding wheel seat and a grinding wheel connected with the driving mechanism, the driving mechanism can drive the grinding wheel to rotate around a horizontal shaft, and the swinging mechanism is arranged on the workbench and connected with the grinding wheel seat to drive the grinding wheel to move back and forth along a second horizontal direction so as to grind the cutter back and forth;
the swinging mechanism comprises a base fixed on the workbench, a third motor arranged on the base, a first sliding table connected with the base in a sliding way and connected with an output shaft of the third motor, a second sliding table connected with the top surface of the first sliding table in a sliding way, an eccentric mechanism arranged on the first sliding table and a connecting rod connected with the eccentric mechanism, one end of the connecting rod is movably connected with the second sliding table, the grinding wheel mechanism is fixed on the top surface of the second sliding table, and the eccentric mechanism drives the second sliding table to move back and forth through the connecting rod so as to enable the grinding wheel mechanism to realize reciprocating swinging;
the eccentric mechanism comprises a mounting box fixed on the first sliding table, a speed reducing motor, an eccentric wheel, a guide piece, an adjusting block and a rod end joint bearing, wherein the speed reducing motor is fixedly arranged on the mounting box, the eccentric wheel is connected with an output shaft of the speed reducing motor, the guide piece is fixedly connected to the bottom surface of the eccentric wheel and provided with a dovetail guide rail, the adjusting block is connected to the guide piece in a sliding manner, the rod end joint bearing is connected with the adjusting block, the speed reducing motor drives the eccentric wheel and the guide piece to rotate, the adjusting block slides back and forth in the guide piece, and then drives the rod end joint bearing and the connecting rod to swing so as to drive the second sliding table to slide back and forth on the first sliding table; the guide piece is hollow and the bottom surface opening is formed with the forked tail guide rail in the guide piece, the entry that supplies the regulating block to slide into is offered to the side of guide piece, this guide piece is connected with the stopper in this entrance detachably, this stopper is provided with the top in the one side protrusion in the guide piece and holds the post towards the gliding maximum stroke of regulating block on the forked tail guide rail, rod end joint bearing's one end and connecting rod are connected, rod end joint bearing's the other end has spherical slide bearing, spherical slide bearing embeds in the activity is equipped with the spheroid that matches, the spheroid can rotate in spherical slide bearing, spheroidal top has the linkage segment that stretches out, this linkage segment is connected and is fixed in the bottom surface of regulating block, this linkage segment overcoat is equipped with the spacer, this spacer can restrict spheroid for spherical slide bearing pivoted biggest angle, the connecting rod is kept away from rod end through connecting piece and second slip table swing joint.
2. The high precision hard material tool grinding device according to claim 1, wherein: the quick feeding assembly comprises a guide rail arranged on the workbench, a sliding block connected to the guide rail in a sliding manner and a driving air cylinder connected with the sliding block and used for driving the sliding block to slide along the guide rail so as to drive the slewing mechanism to move along the first horizontal direction, and the extending direction of the length of the guide rail is parallel to the first horizontal direction and perpendicular to the second horizontal direction.
3. The high precision hard material tool grinding device according to claim 2, wherein: the fine adjustment feeding assembly comprises a supporting table and a fine adjustment hand wheel, wherein the supporting table is connected with the sliding rail in a sliding mode, and the fine adjustment hand wheel is connected with the supporting table and used for driving the supporting table to move along the first horizontal direction so as to grind the cutter; the rotary mechanism comprises a hollow rotary table fixed on the supporting table, a rotary shaft arranged on the rotary table, the top of the rotary table stretches out of the rotary table, a first motor connected with the rotary shaft and used for driving the rotary shaft to rotate, and the rotary shaft is fixedly connected with the clamping mechanism.
4. A high precision hard material tool grinding apparatus according to claim 3, wherein: the clamping mechanism comprises a fixing seat, a fixture and a second motor, wherein the fixing seat is fixedly connected with the rotating shaft, the fixture is arranged on the fixing seat and used for clamping and fixing the cutter, the second motor is arranged on the fixing seat and is in linkage with the fixture, and the second motor can drive the fixture to rotate around a horizontal shaft relative to the fixing seat.
5. The high precision hard material tool grinding device according to claim 4, wherein: the jig is a tungsten steel bar jig, the tungsten steel bar jig comprises a clamping taper sleeve body fixed on the fixing seat, and a clamping hole for clamping and fixing a cutter handle of the cutter is formed in the axial center of the clamping taper sleeve body.
6. The high precision hard material tool grinding device according to claim 5, wherein: the high-precision hard material cutter grinding device further comprises an image acquisition mechanism, a display and a multi-multiplying-power adjusting knob, wherein the image acquisition mechanism is arranged on the workbench and used for acquiring the relative position information of the cutter and the grinding wheel, the display is connected with the image acquisition mechanism and used for displaying the image information acquired by the image acquisition mechanism, and the multi-multiplying-power adjusting knob is connected with the image acquisition mechanism and used for adjusting the acquisition mode of the image acquisition mechanism to be suitable for the relative positions of the cutter and the grinding wheel.
7. A grinding method using the high-precision hard material tool grinding device according to claim 6, characterized in that: the method comprises the following steps:
clamping and fixing the cutter on the clamping mechanism;
completing tool setting by adjusting the quick feed assembly and the fine adjustment feed assembly, and moving the tool to a processing position;
setting working parameters of the clamping mechanism and the grinding wheel mechanism, and controlling the fine adjustment feeding assembly to drive the clamping mechanism to drive the cutter to move a preset distance towards the grinding wheel mechanism so as to finish single-step feeding grinding;
and controlling the swinging mechanism to drive the grinding wheel mechanism to move back and forth for a preset number of times, so that the grinding processing with the same feeding amount is performed each time the cutter completes single-step feeding grinding.
8. The grinding method according to claim 7, wherein: and the control of the swing frequency and the swing amplitude of the grinding wheel mechanism is realized by controlling the driving frequency and the driving distance of the third motor to drive the first sliding table.
9. The grinding method according to claim 8, wherein: and the feeding amount of the single-step feeding grinding is adjusted to be 1um by rotating the fine adjustment hand wheel by a preset angle, and the grinding wheel shaft is driven by the third motor to move back and forth along the second horizontal direction for 2-4 times when the cutter is fed for 1um each time, so that the cutter is fed for 1um by grinding.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109940465B (en) * | 2019-04-03 | 2020-12-29 | 马鞍山市恒强合金科技有限公司 | Cutter grinding and recycling device |
| CN110154252B (en) * | 2019-04-04 | 2021-12-03 | 深圳市威雄精机有限公司 | Method for manufacturing diamond cutter wheel |
| CN110026900A (en) * | 2019-04-30 | 2019-07-19 | 深圳市威雄精机有限公司 | Break bar grinding attachment |
| CN111168486B (en) * | 2020-01-22 | 2021-07-30 | 深圳市威雄精机有限公司 | Cutter grinding machine |
| CN116713539B (en) * | 2023-08-11 | 2023-12-26 | 江苏京创先进电子科技有限公司 | Cutting equipment |
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