CN106994640B - Movable type line belt grinding device - Google Patents
Movable type line belt grinding device Download PDFInfo
- Publication number
- CN106994640B CN106994640B CN201710256484.XA CN201710256484A CN106994640B CN 106994640 B CN106994640 B CN 106994640B CN 201710256484 A CN201710256484 A CN 201710256484A CN 106994640 B CN106994640 B CN 106994640B
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- grinding
- guide wheel
- diamond wire
- diamond
- pay
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- 238000000227 grinding Methods 0.000 title claims abstract description 134
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 120
- 239000010432 diamond Substances 0.000 claims abstract description 120
- 230000007246 mechanism Effects 0.000 claims abstract description 79
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000011084 recovery Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000000110 cooling liquid Substances 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 10
- 239000002826 coolant Substances 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract 5
- 238000013508 migration Methods 0.000 abstract 5
- 239000000463 material Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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
- B24B27/00—Other grinding machines or devices
-
- 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
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a movable line area abrasive machining device, the fixed trapezoidal support that is provided with on the terminal surface before the lathe bed, set up the receipts paying off machine who is used for paying out and drawing in the diamond wire on the trapezoidal support, a guide pulley mechanism for supporting the diamond wire who pays out and arrange the diamond wire into diamond wire row, set up the supporting element below the trapezoidal support, and fix the cooling body on the lathe bed leading flank, still set up between trapezoidal support and the supporting element and be located diamond wire row above be used for pressing the diamond wire row down and carry out the pressure grinding machine of grinding to the work piece of being ground, the supporting element has the vertical migration mechanism who is used for driving the work piece vertical migration who is ground that sets up on the coolant recovery tank of cooling body, the horizontal migration mechanism who is used for driving the work piece horizontal migration of being ground that sets up on the vertical migration mechanism, the both sides that lie in trapezoidal support on the lathe bed leading flank still are provided with the straining mechanism to the diamond wire. The invention has low grinding temperature, low grinding burn to the surface of the workpiece and ensures the processing precision.
Description
Technical Field
The present invention relates to a grinding apparatus. In particular to a movable type line belt grinding processing device for processing hard and brittle materials and thermolabile materials.
Background
With the need of industrial development and the continuous breakthrough and innovation of material science, various novel materials with high strength, high hardness, corrosion resistance and high temperature resistance are produced. Among these materials, a composite material which has high strength, super hardness, high brittleness, etc., and which usually contains a plurality of multicomponent alloying elements or non-metallic materials having high active energy, and which contains both metals and non-metals, is called a super-hard material. Such as hard alloy, high temperature alloy, titanium alloy, diamond, ceramic, etc., which have shown wide application prospect in the fields of machinery, electronics, computers, aerospace, etc. However, due to the brittle and hard characteristics of the superhard material, the superhard material has poor processing performance and is very easy to generate microcracks and burns, so that the popularization and the application of the superhard material are restricted to a great extent.
At present, the superhard material is mainly ground by a grinding wheel and a grinding belt, wherein the grinding wheel grinding is to extrude the surface of the material by rotating the abrasive particles of the grinding wheel at a high speed to generate plastic deformation or brittle fracture so as to generate grinding and form a new surface. The grinding process features that multiple-edge micro machining is used, so long-time machining and high-precision and precise geometric size can be obtained. The abrasive belt grinding method is to use abrasive belt moving at high speed as grinding tool and to process workpiece with the aid of contact wheel, tension wheel, driving wheel and other parts. Compared with grinding wheel grinding, the method has the characteristics of high grinding efficiency, good processing quality, high process flexibility, strong adaptability and the like, particularly, the residual tensile stress of the processed surface subjected to abrasive belt grinding is small, the method belongs to elastic grinding, and the problems of grinding burn, workpiece deformation and the like are solved.
However, the traditional grinding wheel is not a tool suitable for efficiently removing metal, and grinding generally always consumes much higher energy than cutting, and the grinding specific energy is usually as high as 6-200J/mm calculated by removing single-bit carbon steel 3 Above, the specific energy of cutting is only 8-10J/mm 3 The following. The large amount of energy that is additionally consumed during grinding is ultimately converted almost to heat, and it is this extremely significant thermal effect of grinding that severely compromises the surface integrity of the part being ground, which limits metal removal rates. In addition, the abrasive belt adopts fabric or paper as a base belt, so that the strength is low, and high-speed grinding and powerful grinding cannot be performed. The belt is a closed loop operation, the length is limited, and the belt needs to be changed frequently. Meanwhile, in order to avoid belt running of the abrasive belt during processing, a pressure grinding wheel in abrasive belt grinding is usually made into a spindle shape, so that certain influence is caused on processing precision.
Disclosure of Invention
The invention aims to solve the technical problem of providing a movable type linear belt grinding device which is high in machining precision, large in grinding machining area and high in efficiency.
The technical scheme adopted by the invention is as follows: a movable type wire belt grinding device comprises a machine body and diamond wires, wherein a trapezoidal support is fixedly arranged on the front end face of the machine body, a take-up and pay-off mechanism used for paying out and taking in the diamond wires and a guide wheel mechanism used for supporting the paid-out diamond wires and arranging the diamond wires into a diamond wire row are arranged on the trapezoidal support, a supporting unit used for supporting and moving a ground workpiece and a cooling mechanism fixed on the front side face of the machine body and used for cooling the grinding mechanism are arranged below the trapezoidal support, a pressing and grinding mechanism used for pressing the diamond wire row to grind the ground workpiece is further arranged between the trapezoidal support and the supporting unit and located above the diamond wire row, the supporting unit comprises a vertical moving mechanism arranged on a cooling liquid recycling groove of the cooling mechanism and used for driving the ground workpiece to vertically move, a horizontal moving mechanism arranged on the vertical moving mechanism and used for driving the ground workpiece to horizontally move, and tensioning mechanisms used for tensioning the diamond wires are further arranged on two sides of the trapezoidal support on the front side face of the machine body;
the vertical moving mechanism comprises a workbench and two diagonal vertical motors which are respectively arranged on the front side and the rear side of the cooling liquid recovery tank, the output shafts of the two vertical motors are respectively connected with a vertical screw rod, internal threads are formed on the workbench corresponding to the two vertical screw rods and are in threaded connection with the two vertical screw rods through the internal threads, guide pillars which penetrate through the workbench are also arranged on the front side and the rear side of the cooling liquid recovery tank in a diagonal manner, and each guide pillar and the vertical screw rod which is positioned on the same side of the cooling liquid recovery tank are arranged in parallel;
the horizontal moving mechanism comprises two guide rails which are arranged on a workbench in the vertical moving mechanism in parallel along the front-back direction, and a sliding block which is arranged on the two guide rails and can move back and forth along the two guide rails and is used for placing a ground workpiece, the sliding block is connected with a horizontal lead screw through an internal thread which is formed in the middle and runs through from front to back, the front end of the horizontal lead screw is connected with a horizontal motor which is arranged on the front side edge of the workbench, and the rear end of the horizontal lead screw is arranged on the rear side edge of the workbench through a bearing.
The trapezoidal support comprises a trapezoidal side frame, four bearing rings which are integrally formed on four end corners of the trapezoidal side frame respectively and have the same structure and are used for respectively supporting a take-up and pay-off mechanism and a guide wheel mechanism, and three fixing frames, wherein one end of each fixing frame is connected with the upper edge and the two side edges of the trapezoidal side frame respectively, and the other end of each fixing frame is connected with the front side face of the lathe bed.
The three fixing frames are identical in structure and are of L-shaped structures, long sides of the three L-shaped structures are vertically connected to the upper side and the two side edges of the trapezoidal side frame respectively, and short sides of the three L-shaped structures are fixed to the front side face of the lathe bed respectively through bolts.
The take-up and pay-off mechanism comprises a pay-off wheel and a take-up wheel, wherein the pay-off wheel is wound with a diamond wire and used for paying off the diamond wire, the take-up wheel is used for receiving the diamond wire wound from the guide wheel mechanism, the pay-off wheel and the take-up wheel are identical in structure, one end of each pay-off wheel is connected with two bearing rings on two end angles of the upper portion of the trapezoidal side frame, the other end of each pay-off wheel is fixed on the front side face of the lathe bed, two take-up and pay-off motors are arranged on the rear side face of the lathe bed corresponding to the pay-off wheel and the take-up wheel, and output shafts of the two take-up and pay-off motors penetrate through the lathe bed respectively and are connected with the pay-off wheel and the take-up wheel on the front side face of the lathe bed.
The guide wheel mechanism comprises a left guide wheel and a right guide wheel, the left guide wheel is used for receiving diamond wires discharged from the wire winding and unwinding mechanism and guiding the diamond wires to form diamond wire rows, the right guide wheel is used for receiving the diamond wire rows led out by the left guide wheel and guiding the diamond wire rows to the wire winding and unwinding mechanism, the left guide wheel and the right guide wheel are identical in structure, one end of each guide wheel is connected into two bearing rings on two end corners of the lower portion of the trapezoidal side frame, the other end of each guide wheel is fixed on the front side face of the lathe bed, two guide wheel motors are arranged on the rear side face of the lathe bed corresponding to the left guide wheel and the right guide wheel, and output shafts of the two guide wheel motors penetrate through the lathe bed respectively and are connected with the left guide wheel and the right guide wheel which are connected on the front side face of the lathe bed.
And U-shaped grooves for supporting diamond wires and arranging the diamond wires into diamond wire rows are formed on the outer surfaces of the left guide wheel and the right guide wheel respectively, and the diamond wires are completely embedded in the U-shaped grooves.
The grinding mechanism comprises a fixed plate fixed on the front side surface of the lathe bed, two vertical guide rails arranged in parallel along the length direction of the fixed plate, a grinding slide block capable of moving up and down along the vertical guide rails, and a grinding wheel vertically connected to the grinding slide block through a bearing and used for pressing a diamond wire row to grind a workpiece to be ground, wherein the grinding slide block is also connected with a grinding lead screw through an internal thread hole formed in the middle and communicated up and down, the lower end of the grinding lead screw is connected with an output shaft of a grinding motor arranged on the lower portion of the fixed plate, and the upper end of the grinding lead screw is connected with a grinding bearing arranged on the upper portion of the fixed plate.
The cooling mechanism comprises a cooling liquid recovery groove and two L-shaped cooling liquid guide paths, wherein the rear side face of the cooling liquid recovery groove is fixed on the front side face of the lathe bed, the bottom end of the vertical part of each L-shaped cooling liquid guide path forms a liquid inlet which is connected with the liquid outlet of the cooling liquid recovery groove, a liquid outlet pump is arranged at the position of the liquid outlet of each cooling liquid recovery groove, the horizontal parts of the two L-shaped cooling liquid guide paths are respectively positioned at the two sides of the press grinding mechanism and are arranged in parallel with press grinding wheels in the press grinding mechanism, and the end heads of the horizontal parts of the L-shaped cooling liquid guide paths form nozzles for spraying cooling liquid on diamond wire rows formed by diamond wires.
According to the movable type wire belt grinding device, due to the inherent characteristics of the diamond wire row, a large number of sharp diamond particles are thrown into a contact area between the diamond wire row and a workpiece for grinding at the same time, so that the grinding rate is higher than that of a consolidated grinding wheel, and the generated grinding heat is small. Because the gaps are distributed among the diamond grains and the contact time of the diamond grains with air in the space is long, the grinding heat diffusion is easy, the grinding temperature of the movable diamond wire row is low, and the grinding burn to the surface of the workpiece is reduced. In the grinding process, a small gap is formed between the diamond wires and moves at a high speed all the time, chips are taken out of the workpiece and shaken off in the movement, and the influence on the precision caused by the blockage of the chips is effectively prevented. And a new diamond wire participates in each small machining cycle, so that the machining precision is ensured on the other hand. Meanwhile, the strength of the diamond wire is far higher than that of the abrasive belt, larger normal grinding force and tangential grinding force can be provided, and the machining efficiency is high. The movable diamond wire row has the advantages of low grinding heat, difficult blockage, high processing precision, large grinding processing area, high efficiency, low cost and convenient replacement of the diamond wire, and has wide application prospect.
Drawings
FIG. 1 is a schematic view of the overall structure of a movable belt grinding apparatus according to the present invention;
FIG. 2 is a schematic front view of a movable belt grinding apparatus according to the present invention;
FIG. 3 is a schematic view of the overall structure of the ladder support of the present invention;
FIG. 4 is a schematic view of the mounting structure of the ladder support of the present invention;
FIG. 5 is a schematic view of the outer side structure of the left and right guide wheels of the present invention;
fig. 6 is a schematic structural view of the press grinding mechanism of the present invention.
In the drawings
1: a lathe bed 2: paying-off wheel
3: the tensioning mechanism 4: left guide wheel
5: diamond wire 6: l-shaped cooling liquid guide path
7: cooling liquid recovery tank 8: guide post
9: the vertical motor 10: vertical lead screw
11: guide rail 12: sliding block
13: pressing the grinding wheel 14: nozzle with a nozzle body
15: a take-up pulley 16: ladder-shaped support
161: trapezoidal side frame 162: bearing ring
163: a fixing frame 17: diamond wire row
18: retraction motor 19: right guide wheel
20: guide wheel motor 21: u-shaped groove
22: fixing plate 23: vertical guide rail
24: pressing and grinding the sliding block 25: press grinding motor
26: pressing and grinding the screw rod 27: press grinding bearing
28: the work table 29: horizontal lead screw
30: horizontal motor
Detailed Description
A movable type wire belt grinding apparatus according to the present invention will be described in detail with reference to the following embodiments and the accompanying drawings.
The invention relates to a movable type line belt grinding processing device, which is a novel processing mode integrating traditional abrasive belt grinding and newly developed diamond lines. The diamond wire substrate is a steel wire, and a layer of artificial diamond abrasive grains is uniformly consolidated on the surface. During processing, the diamond wire firstly winds out from the pay-off wheel to enter the left guide wheel under the action of pretightening force, returns to the right guide wheel through the pretightening force, is spirally wound and arranged among the 2 guide wheels to form a wire belt, and finally returns to the take-up pulley. After the diamond wire row operates stably, the pressure grinding wheel is close to the diamond wire row and applies certain pressure to enable the pressure grinding wheel to be in contact with the surface of a workpiece to be ground and generate relative friction, and therefore grinding is conducted. The left guide wheel and the right guide wheel drive the diamond wire row to move forwards for a certain distance, and then the diamond wire row can be decelerated, stopped and reversely moved for a certain distance. In reverse operation, the diamond wire is wound out from the pay-off wheel and returns to the take-up wheel through the grinding part. And a workbench for fixing the workpiece to realize feeding is arranged below the diamond wire row. The special grinding tool with the movable diamond wire row is adopted, the heat of the processed surface is low, and the tool is not easy to block by abrasive dust. And the grinding wheel is made of flexible materials, and can deform when contacting with a workpiece, so that the processing area is increased. The movable pressure grinding wheel can also adjust contact pressure, realize adjustable high-speed heavy-load ultra-wide processing, is suitable for grinding planes, excircles, stepped shafts and the like, and has wide application prospect.
As shown in fig. 1 and 2, the movable type wire belt grinding device of the present invention includes a bed 1 and a diamond wire 5, wherein a trapezoidal bracket 16 is fixedly disposed on a front end surface of the bed 1, a take-up and pay-off mechanism for paying out and paying in the diamond wire 5 and a guide wheel mechanism for supporting the paid-out diamond wire 5 and arranging the diamond wire 5 into a diamond wire row 17 are disposed on the trapezoidal bracket 16, and a width of the diamond wire row 17 is different from 20mm to 100 mm. The grinding machine is characterized in that a supporting unit used for supporting and moving a ground workpiece is arranged below the trapezoid support 16, a cooling mechanism used for cooling the grinding mechanism is fixed on the front side face of the machine body 1, a pressing and grinding mechanism located above the diamond wire row 17 and used for pressing the diamond wire row 17 to grind the ground workpiece is further arranged between the trapezoid support 16 and the supporting unit, the supporting unit comprises a vertical moving mechanism arranged on a cooling liquid recovery tank 7 of the cooling mechanism and used for driving the ground workpiece to vertically move, and a horizontal moving mechanism arranged on the vertical moving mechanism and used for driving the ground workpiece to horizontally move, and tensioning mechanisms 3 used for tensioning the diamond wires 5 are further arranged on the two sides of the trapezoid support 16 on the front side face of the machine body 1.
As shown in fig. 3 and 4, the trapezoid support 16 includes a trapezoid side frame 161, four bearing rings 162 integrally formed at four corners of the trapezoid side frame 161 and having the same structure for supporting a take-up and pay-off mechanism and a guide wheel mechanism, and three fixing frames 163 having one end connected to an upper side and two side edges of the trapezoid side frame 161 and the other end connected to a front side of the bed 1.
The three fixing frames 163 have the same structure and are all L-shaped structures, wherein the long sides of the three L-shaped structures are respectively and vertically connected to the upper side and the two side edges of the trapezoidal side frame 161, and the short sides of the three L-shaped structures are respectively fixed on the front side surface of the bed body 1 through screws.
As shown in fig. 1 and 2, the take-up and pay-off mechanism includes a pay-off reel 2 wound with a diamond wire 5 and used for paying off, and a take-up reel 15 used for receiving the diamond wire 5 wound from the guide wheel mechanism, the pay-off reel 2 and the take-up reel 15 have the same structure, one end of each pay-off reel is respectively connected in two bearing rings 162 on two end corners of the upper part of the trapezoidal side frame 161, the other end of each pay-off reel is respectively fixed on the front side surface of the bed body 1, two take-up and pay-off motors 18 are arranged on the rear side surface of the bed body 1 corresponding to the pay-off reel 2 and the take-up reel 15, and output shafts of the two take-up and pay-off motors 18 respectively penetrate through the bed body 1 and are connected with the pay-off reel 2 and the take-up reel 15 connected on the front side surface of the bed body 1.
As shown in fig. 1 and 2, the guide wheel mechanism includes a left guide wheel 4 for receiving the diamond wire 5 discharged from the wire take-up and pay-off mechanism and guiding the diamond wire 5 out to form a diamond wire row 17, and a right guide wheel 19 for receiving the diamond wire row 17 guided by the left guide wheel 4 and guiding the wire take-up and pay-off mechanism, the left guide wheel 4 and the right guide wheel 19 have the same structure, one end of each of the left guide wheel 4 and the right guide wheel 19 is respectively connected to two bearing rings 162 at two end corners of the lower portion of the trapezoidal side frame 161, the other end of each of the left guide wheel 4 and the right guide wheel is respectively fixed to the front side surface of the bed 1, two guide wheel motors 20 are arranged on the rear side surface of the bed 1 corresponding to the left guide wheel 4 and the right guide wheel 19, and output shafts of the two guide wheel motors 20 respectively penetrate through the bed 1 and are connected to the left guide wheel 4 and the right guide wheel 19 connected to the front side surface of the bed 1.
The outer surfaces of the left guide wheel 4 and the right guide wheel 19 are respectively provided with a U-shaped groove 21 for supporting the diamond wires 5 and arranging the diamond wires 5 into the diamond wire row 17, and the diamond wires 5 are completely embedded in the U-shaped grooves 21. The diamond wire 5 returns to the take-up reel 15 after passing around all the U-shaped grooves 21 on the left guide wheel 4 and the right guide wheel 19.
As shown in fig. 6, the pressing and grinding mechanism includes a fixing plate 22 fixed on the front side surface of the bed 1, two vertical guide rails 23 arranged in parallel along the length direction of the fixing plate 22, a pressing and grinding slider 24 capable of moving up and down along the vertical guide rails 23, and a pressing and grinding wheel 13 vertically connected to the pressing and grinding slider 24 through a bearing and used for pressing down the diamond wire row 17 to grind a workpiece to be ground, the pressing and grinding slider 24 is further connected to a pressing and grinding screw 26 through an internal threaded hole formed in the middle and penetrating up and down, the lower end of the pressing and grinding screw 26 is connected to an output shaft of a pressing and grinding motor 25 arranged at the lower part of the fixing plate 22, and the upper end of the pressing and grinding screw 26 is connected to a pressing and grinding bearing 27 arranged at the upper part of the fixing plate 22. The grinding wheel 13 is not in contact with the diamond wire row 17 immediately after the system is started. After the diamond wire row 17 moves stably, the pressing grinding wheel 13 is close to the diamond wire row 17 and presses the diamond wire row to the workpiece to be ground, so that the diamond wire row is in contact with and rubs against the surface of the workpiece to be ground, and the grinding effect can be achieved. The grinding wheel 13 is a driven wheel, and when the grinding wheel presses the diamond wire row 17, the grinding wheel can rotate along with the diamond wire row 17 under the action of force. The surface of the grinding wheel 13 is made of a flexible material and is deformed by a normal grinding force. Therefore, the diamond wire row 17 and the workpiece to be ground are ground in surface contact during machining.
The take-up pulley 15, the pay-off pulley 2, the left guide pulley 4 and the right guide pulley 19 have only 1 degree of freedom, namely, rotate around the direction of the axis of the take-up pulley 15, the pay-off pulley 2, the left guide pulley 4 and the right guide pulley 19.
As shown in fig. 1, 2 and 4, the vertical moving mechanism includes a working table 28 and two vertical motors 9 which are diagonally arranged on the front side and the rear side of the coolant recovery tank 7, the output shafts of the two vertical motors 9 are connected with a vertical screw 10, the working table 28 is provided with an internal thread corresponding to the two vertical screws 10, and is in threaded connection with the two vertical screws 10 through the internal thread, two guide posts 8 which penetrate through the working table 28 are diagonally arranged on the front side and the rear side of the coolant recovery tank 7, and each guide post 8 and the vertical screw 10 on the same side of the coolant recovery tank 7 are arranged in parallel and in parallel.
As shown in fig. 1, 2 and 4, the horizontal moving mechanism includes two guide rails 11 arranged in parallel in the front-back direction on a table 28 in the vertical moving mechanism, and a slider 12 mounted on the two guide rails 11 and capable of moving back and forth along the two guide rails 11 for placing a workpiece to be ground, the slider 12 is connected with a horizontal screw 29 through a front-back through internal thread formed in the middle, the front end of the horizontal screw 29 is connected with a horizontal motor 30 arranged on the front side of the table 28, and the rear end of the horizontal screw 29 is arranged on the rear side of the table 28 through a bearing.
As shown in fig. 1 and 2, the cooling mechanism includes a cooling liquid recycling groove 7 and two L-shaped cooling liquid guide paths 6, the rear side of which is fixed on the front side of the bed 1, the bottom ends of the vertical portions of the two L-shaped cooling liquid guide paths 6 form a liquid inlet connected to the liquid outlet of the cooling liquid recycling groove 7, a liquid outlet pump is disposed at the liquid outlet of the cooling liquid recycling groove 7, the horizontal portions of the two L-shaped cooling liquid guide paths 6 are respectively located at two sides of the crushing and grinding mechanism and are arranged in parallel with a crushing and grinding wheel 13 in the crushing and grinding mechanism, and the end of the horizontal portion of the L-shaped cooling liquid guide path 6 forms a nozzle 14 for spraying cooling liquid onto a diamond wire row 17 formed by diamond wires 5. The cooling liquid is sprayed on the diamond wire row 17 to exchange heat with the diamond wire, so that the temperature of the diamond wire and the surface of a ground workpiece is reduced. The length of the nozzle is the same as that of the grinding wheel, and a series of small holes are formed on one side close to the diamond wire row 17 to allow the cooling liquid to flow out.
Since diamond wire is a consumable, it fails after a certain number of grindings. During grinding, the diamond wire rotates for a distance l in each forward direction 1 Will decelerate, stop and rotate in the reverse direction for a distance l 2 And the relationship between the two must satisfy l 1 >l 2 The difference between the two is the advancing distance of the diamond wire with one processing small circulation. l 1 And l 2 The specific numerical value of the diamond wire is determined according to the actual machining working condition, and the machining is stopped after the diamond wire is fully used and fails. The diamond wire is low in cost, and the wire does not need to be repaired after failure, and can be directly replaced by a new wire. When the diamond wire on the pay-off wheel is about to be used up, the processing should be stopped, the grinding wheel is separated from the wire belt, and a new diamond wire is replaced.
Claims (8)
1. A movable type wire belt grinding device comprises a machine body (1) and diamond wires (5), and is characterized in that a trapezoidal support (16) is fixedly arranged on the front end face of the machine body (1), a wire winding and unwinding mechanism for winding and unwinding the diamond wires (5) and a guide wheel mechanism for supporting the wound diamond wires (5) and arranging the diamond wires (5) into diamond wire rows (17) are arranged on the trapezoidal support (16), a supporting unit for supporting and moving a ground workpiece and a cooling mechanism for cooling the grinding mechanism are fixed on the front side face of the machine body (1), a vertical moving mechanism for driving the ground workpiece to vertically move is arranged on a cooling liquid recovery groove (7) of the cooling mechanism, a pressing and grinding mechanism for pressing the diamond wire rows (17) to grind the ground workpiece is arranged on the diamond wire rows (17) is arranged between the trapezoidal support (16) and the supporting unit, a horizontal moving mechanism for tensioning the diamond wires (3) is arranged on the horizontal moving mechanism and used for tensioning the diamond wires (5);
the vertical moving mechanism comprises a workbench (28) and two vertical motors (9) which are arranged diagonally and are respectively arranged on the front side and the rear side of the cooling liquid recovery tank (7), the output shafts of the two vertical motors (9) are respectively connected with a vertical lead screw (10), internal threads are formed on the workbench (28) corresponding to the two vertical lead screws (10) and are in threaded connection with the two vertical lead screws (10) through the internal threads, guide columns (8) penetrating through the workbench (28) are respectively arranged diagonally and on the front side and the rear side of the cooling liquid recovery tank (7), and each guide column (8) and the vertical lead screw (10) on the same side edge of the cooling liquid recovery tank (7) are arranged side by side and in parallel;
the horizontal moving mechanism comprises two guide rails (11) which are arranged on a workbench (28) in the vertical moving mechanism in parallel along the front-back direction, a sliding block (12) which is arranged on the two guide rails (11) and can move back and forth along the two guide rails (11) and used for placing a workpiece to be ground, the sliding block (12) is connected with a horizontal lead screw (29) through a front-back through internal thread formed in the middle part, the front end of the horizontal lead screw (29) is connected with a horizontal motor (30) arranged on the front side edge of the workbench (28), and the rear end of the horizontal lead screw (29) is arranged on the rear side edge of the workbench (28) through a bearing.
2. The movable type bobbin grinding device according to claim 1, wherein the trapezoid support (16) comprises trapezoid side frames (161), four bearing rings (162) which are respectively and integrally formed on four corners of the trapezoid side frames (161) and have the same structure and are respectively used for supporting a take-up and pay-off mechanism and a guide wheel mechanism, and three fixing frames (163) which are respectively connected with the upper side and two side edges of the trapezoid side frames (161) at one end and are connected with the front side surface of the machine body (1) at the other end.
3. The movable type wire belt grinding device as claimed in claim 2, wherein the three fixing frames (163) are identical in structure and are all L-shaped structures, wherein the long sides of the three L-shaped structures are vertically connected to the upper side and the two side sides of the trapezoidal side frame (161) respectively, and the short sides of the three L-shaped structures are fixed on the front side surface of the machine body (1) respectively through bolts.
4. The movable type wire belt grinding processing device as claimed in claim 2, wherein the take-up and pay-off mechanism comprises a pay-off reel (2) wound with and paying off a diamond wire (5) and a take-up reel (15) used for receiving the diamond wire (5) wound from the guide wheel mechanism, the pay-off reel (2) and the take-up reel (15) are identical in structure, one end of each pay-off reel is respectively connected into two bearing rings (162) on two end corners of the upper portion of the trapezoidal side frame (161), the other end of each pay-off reel is respectively fixed on the front side face of the lathe body (1), two take-up and pay-off motors (18) are arranged on the rear side face of the lathe body (1) corresponding to the pay-off reel (2) and the take-up reel (15), and output shafts of the two take-up and pay-off motors (18) respectively penetrate through the lathe body (1) and are connected with the pay-off reel (2) and the take-up reel (15) connected on the front side face of the lathe body (1).
5. The movable type wire belt grinding device as claimed in claim 2, wherein the guide wheel mechanism comprises a left guide wheel (4) for receiving the diamond wire (5) paid out from the wire take-up and pay-off mechanism and guiding the diamond wire (17) out of the wire take-up and pay-off mechanism, and a right guide wheel (19) for receiving the diamond wire (17) led out from the left guide wheel (4) and guiding the diamond wire out of the wire take-up and pay-off mechanism, the left guide wheel (4) and the right guide wheel (19) are identical in structure, one end of each of the left guide wheel (4) and the right guide wheel (19) is connected to two bearing rings (162) at two end corners of the lower portion of the trapezoidal side frame (161), the other end of each of the left guide wheel (4) and the right guide wheel (19) is fixed to the front side surface of the machine body (1), two guide wheel motors (20) are arranged on the rear side surface of the machine body (1) corresponding to the left guide wheel (4) and the right guide wheel (19), and output shafts of the two guide wheel motors (20) are respectively connected to the left guide wheel (4) and the right guide wheel (19) connected to the front side surface of the machine body (1).
6. A movable wire belt grinding device according to claim 5, wherein the outer surfaces of the left guide wheel (4) and the right guide wheel (19) are respectively formed with U-shaped grooves (21) for supporting the diamond wires (5) and arranging the diamond wires (5) in the diamond wire row (17), and the diamond wires (5) are completely embedded in the U-shaped grooves (21).
7. The movable type linear belt grinding device according to claim 1, wherein the grinding mechanism comprises a fixed plate (22) fixed on the front side surface of the machine body (1), two vertical guide rails (23) arranged in parallel along the length direction of the fixed plate (22), a grinding slide block (24) capable of moving up and down along the vertical guide rails (23), and a grinding wheel (13) vertically connected to the grinding slide block (24) through a bearing and used for pressing a diamond wire row (17) down to grind a ground workpiece, the grinding slide block (24) is further connected with a grinding screw rod (26) through an internal threaded hole formed in the middle and penetrating up and down, the lower end of the grinding screw rod (26) is connected with an output shaft of a grinding motor (25) arranged at the lower part of the fixed plate (22), and the upper end of the grinding screw rod is connected with a grinding bearing (27) arranged at the upper part of the fixed plate (22).
8. The movable type wire belt grinding processing device according to claim 1, wherein the cooling mechanism comprises a cooling liquid recovery groove (7) having a rear side fixed on the front side of the bed (1) and two L-shaped cooling liquid guide paths (6), a liquid inlet formed at the bottom end of the vertical portion of the two L-shaped cooling liquid guide paths (6) is connected to the liquid outlet of the cooling liquid recovery groove (7), a liquid outlet pump is arranged at the liquid outlet of the cooling liquid recovery groove (7), the horizontal portions of the two L-shaped cooling liquid guide paths (6) are respectively located at two sides of the press grinding mechanism and are arranged in parallel with a press grinding wheel (13) in the press grinding mechanism, and the end of the horizontal portion of the L-shaped cooling liquid guide path (6) forms a nozzle (14) for spraying cooling liquid onto a diamond wire row (17) formed by diamond wires (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710256484.XA CN106994640B (en) | 2017-04-18 | 2017-04-18 | Movable type line belt grinding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710256484.XA CN106994640B (en) | 2017-04-18 | 2017-04-18 | Movable type line belt grinding device |
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| CN106994640A CN106994640A (en) | 2017-08-01 |
| CN106994640B true CN106994640B (en) | 2022-12-20 |
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| CN201710256484.XA Expired - Fee Related CN106994640B (en) | 2017-04-18 | 2017-04-18 | Movable type line belt grinding device |
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| CN114932270B (en) * | 2022-06-24 | 2023-08-22 | 浙江亚微精密机床有限公司 | Processing method for bonding nut block and screw rod surface |
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| CN106994640A (en) | 2017-08-01 |
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