CN103100745A - Arc notching machine of numerical control friction plate and notching method thereof - Google Patents
Arc notching machine of numerical control friction plate and notching method thereof Download PDFInfo
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- CN103100745A CN103100745A CN2012104677708A CN201210467770A CN103100745A CN 103100745 A CN103100745 A CN 103100745A CN 2012104677708 A CN2012104677708 A CN 2012104677708A CN 201210467770 A CN201210467770 A CN 201210467770A CN 103100745 A CN103100745 A CN 103100745A
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Abstract
The invention relates to a notching machine, and particularly relates to an arc notching machine of a numerical control friction plate and a notching method thereof. The arc notching machine is especially suitable for processing a double-side and two-way arc oil groove of a Cu-base powder metallurgy friction plate. An electromagnetic chuck control mechanism is arranged inside a bench drilling machine; the bench drilling machine carries out rotating control through a drilling machine stepper servomotor; the electromagnetic chuck control mechanism carries out rotating control through an electromagnetic chuck stepper servomotor; the bench drilling machine, the electromagnetic chuck control mechanism, the drilling machine step servomotor and the electromagnetic chuck stepper servomotor are respectively controlled through an electric control cabinet of a numerical control system; and notching milling cutters which are distributed correspondingly to the electromagnetic chuck control mechanism are arranged in the bench drilling machine. By adopting the arc notching machine of the numerical control friction plate and the notching method thereof, the notching depth is consistent; the scale division is even; the product quality is improved; the labor intensity of a worker is reduced; the working condition is improved; and the production efficiency is obviously improved.
Description
Technical field
The present invention relates to a kind of groover, relate in particular to a kind of numerical control friction plate circular arc groover and grooving method thereof, be specially adapted to two-sided, the two-way arc oil groove processing of copper based powder metallurgy friction wafer.
Background technology
The two-way arc oil groove machining device of existing copper based powder metallurgy friction wafer adopts common bench drill+armstrong's patent index dial and magnechuck etc. to convert at present, except slitting mill by the driven by motor automatic rotation, the mechanical dividing action of the bottom and top feed of milling cutter, the two-way number of assurance arc oil groove all needs manually to use the two hands coordination cooperation to complete, workman's manual operations is too frequent, and labour intensity is large; One people can only operate a processing unit (plant), and efficiency is low; And the oil groove machining accuracy can't be guaranteed, and scrappage is high.Thereby affect the improvement of workman's working condition, the lifting of product quality and the raising of production efficiency.
Chinese patent 200910099959.4, disclose a kind of groover of brake block friction substrate, mainly formed with cutting blade device, dust gathering arrester, cutter sweep motor, stopper slot adjusting device, cutting blade motor adjusting device etc. by conveying mechanism system, brake block stopper slot, stainless steel fixed base plate, push jack baffle plate, fluting.The brake block of bonding friction substrate is by after manually putting on groover, carried out forward by many push jack baffle plates that rotate along with driving chain, enter in the stopper slot according to this batch brake block adjusted size good position, cutting blade below through High Rotation Speed, processed by the grooving that cutting blade carries out desired depth to the friction substrate of brake block, processing the rear braking sheet through fluting continues to carry out forward with the push jack baffle plate again, sending the sheet baffle plate to do circumference when operation with transmission chain through gear to the groover tail end, brake block is fallen into voluntarily chute because of Action of Gravity Field and is slipped in transferring box.This structure relative complex, and inconvenient operation, performance accuracy is low, needs a large amount of manually coordinating.
Summary of the invention
The present invention solves the deficiencies in the prior art, provide a kind of compact conformation, the numerical control friction plate circular arc groover and the grooving method thereof that workman's working condition is thoroughly improved, product quality get a promotion and production efficiency is improved significantly.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
a kind of numerical control friction plate circular arc groover, comprise bench drill and digital control system electrical control cabinet, be provided with the magnechuck controlling organization in described bench drill, described bench drill is by the control that rotates of drilling machine step-servo motor, described magnechuck controlling organization is by the control that rotates of magnechuck step-servo motor, described bench drill, the magnechuck controlling organization, the drilling machine step-servo motor, the magnechuck step-servo motor is respectively by digital control system electrical control cabinet phase control, be provided with the slitting mill with the corresponding distribution of magnechuck controlling organization in described bench drill,
described magnechuck controlling organization comprises base, the top of described base is provided with the turntable body that is halved together with it, the top of described turntable body is provided with the circular electromagnetic chunk that fixes with it, be provided with equally distributed coil in described circular electromagnetic chunk, be provided with main shaft in described base and turntable body, be provided with the nylon mandrel in described main shaft, the bottom cover of described nylon mandrel has copper ring, described copper ring is provided with the connecting line that is connected with circular electromagnetic chunk, described copper ring touches mutually with carbon brush, described carbon brush is by digital control system electrical control cabinet phase control, be provided with worm screw in described base, the bottom lateral wall of described turntable body is provided with the worm gear that is meshed with worm screw, described worm screw and magnechuck step-servo motor are fixedly connected.
As preferably, be fixedly connected by mounting flange between described turntable body and circular electromagnetic chunk, the upper end of described main shaft is located between the lateral wall of the madial wall of turntable body and mounting flange, upper end and the mounting flange of described nylon mandrel fix, the top of described circular electromagnetic chunk be provided with equally distributed be halved together with it increase the magnetic copper band, the bottom of described base is provided with the base connecting plate.
As preferably, described carbon brush is located at the bottom of base connecting plate, between described base and base connecting plate, fix by bolt respectively between mounting flange and turntable body, the described magnetic copper band that increases is provided with 7 circles, and the described magnetic copper band that increases amplifies gradually from inside to outside and distributes.
As preferably, described turntable body and main shaft fix, described main shaft and base are by the locking of locking screw parent phase, be provided with pad between described locking nut and base, described circular electromagnetic chunk is divided into sucker and lower sucker, described coil is halved together with upper sucker and lower sucker respectively, and described coil is provided with 3, and described coil amplifies distribution from inside to outside gradually.
As preferably, the gearratio of described worm and wheel is 1:90, and the diameter of described circular electromagnetic chunk is 320mm, and the height of described circular electromagnetic chunk is 105mm, and the rated voltage of described circular electromagnetic chunk is 90W; The number of phases of described drilling machine step-servo motor and magnechuck step-servo motor is respectively 3, the step angle of described drilling machine step-servo motor and magnechuck step-servo motor is 0.6 degree, the voltage of described drilling machine step-servo motor and magnechuck step-servo motor is respectively 30～300V, the electric current of described drilling machine step-servo motor and magnechuck step-servo motor is respectively 3.4A, and the holding torque of described drilling machine step-servo motor and magnechuck step-servo motor is respectively 12N.M.
As preferably, the bottom of described magnechuck controlling organization is provided with tooling base, and the bottom of described tooling base is provided with workbench.
A kind of grooving method of numerical control friction plate circular arc groover, carry out according to the following steps:
1., friction plate is placed on circular electromagnetic chunk;
2., press digital control system electrical control start button cashier's office in a shop;
3., circular electromagnetic chunk energising produces magnetic force, and friction plate absorption is fixed, the magnetic force of circular electromagnetic chunk is 80N/cm, the time of the energising of circular electromagnetic chunk is 0.66 * 30～75 seconds;
4., digital control system electrical control cabinet control slitting mill carries out the main shaft rotation, the speed of main shaft rotation is 280r/min, the time of main shaft rotation is 0.66 * 30～75 seconds, the digital control system electrical control cabinet drives the main shaft of slitting mill and slots to lower feeding, after fluting is completed, main shaft upwards returns, and the worm drive worm gear is by definite value angle rotary calibration simultaneously, and so repetitive cycling is 30～75 times, the each rotating calibration of worm gear is 360/30～75 degree, and each rotating time of worm gear is 0.3 second;
5., the digital control system electrical control cabinet cuts off the power supply, circular electromagnetic chunk demagnetizes;
6., take off friction plate;
7., friction plate is carried out relay the oil groove processing of carrying out another side on circular electromagnetic chunk, repetition 1～6 step after turn-over.
30～75 quantity that refer to oil groove wherein.
Therefore, a kind of numerical control friction plate circular arc groover of the present invention and grooving method thereof, groove depth is consistent, calibration is even, and product quality gets a promotion, and labor strength is reduced, and working condition improves, and production efficiency is improved significantly.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
embodiment 1: as depicted in figs. 1 and 2, a kind of numerical control friction plate circular arc groover, comprise bench drill 1 and digital control system electrical control cabinet 2, be provided with the magnechuck controlling organization in described bench drill 1, described bench drill 1 is by drilling machine step-servo motor 3 control that rotates, described magnechuck controlling organization is by magnechuck step-servo motor 4 control that rotates, described bench drill 1, the magnechuck controlling organization, drilling machine step-servo motor 3, magnechuck step-servo motor 4 is respectively by digital control system electrical control cabinet 2 phase controls, be provided with the slitting mill 6 with the corresponding distribution of magnechuck controlling organization in described bench drill 1, described magnechuck controlling organization comprises base 7, the top of described base 7 is provided with the turntable body 8 that is halved together with it, the top of described turntable body 8 is provided with the circular electromagnetic chunk 9 that fixes with it, be provided with equally distributed coil 10 in described circular electromagnetic chunk 9, be provided with main shaft 11 in described base 7 and turntable body 8, be provided with nylon mandrel 12 in described main shaft 11, the bottom cover of described nylon mandrel 12 has copper ring 13, described copper ring 13 is provided with the connecting line 14 that is connected with circular electromagnetic chunk 9, described copper ring 13 touches mutually with carbon brush 15, described carbon brush 15 is by digital control system electrical control cabinet 2 phase controls, be provided with worm screw 16 in described base 7, the bottom lateral wall of described turntable body 8 is provided with the worm gear 17 that is meshed with worm screw 16, described worm screw 16 is fixedly connected with magnechuck step-servo motor 4.9 of described turntable body 8 and circular electromagnetic chunks are fixedly connected by mounting flange 18, the upper end of described main shaft 11 is located between the lateral wall of the madial wall of turntable body 8 and mounting flange 18, the upper end of described nylon mandrel 12 and mounting flange 18 fix, the top of described circular electromagnetic chunk 9 be provided with equally distributed be halved together with it increase magnetic copper band 19, the bottom of described base 7 is provided with base connecting plate 20.Described carbon brush 15 is located at the bottom of base connecting plate 20,20 of described base 7 and base connecting plates, mounting flange 18 and 8 of turntable bodies fix by bolt 21 respectively, the described magnetic copper band 19 that increases is provided with 7 circles, and the described magnetic copper band 19 that increases amplifies distribution from inside to outside gradually.Described turntable body 8 fixes with main shaft 11, described main shaft 11 is locked by locking nut 22 mutually with base 7,7 of described locking nut 22 and bases are provided with pad 23, described circular electromagnetic chunk 9 is divided into sucker 24 and lower sucker 25, described coil 10 is halved together with upper sucker 24 and lower sucker 25 respectively, described coil 10 is provided with 3, and described coil 10 amplifies distribution from inside to outside gradually.Described worm screw 16 is 1:90 with the gearratio of worm gear 17, and the diameter of described circular electromagnetic chunk 9 is 320mm, and the height of described circular electromagnetic chunk 9 is 105mm, and the rated voltage of described circular electromagnetic chunk 9 is 90W; Described drilling machine step-servo motor 3 is respectively 3 with the number of phases of magnechuck step-servo motor 4, described drilling machine step-servo motor 3 is 0.6 degree with the step angle of magnechuck step-servo motor 4, described drilling machine step-servo motor 3 is respectively 30～300V with the voltage of magnechuck step-servo motor 4, described drilling machine step-servo motor 3 is respectively 3.4A with the electric current of magnechuck step-servo motor 4, and described drilling machine step-servo motor 3 is respectively 12N.M with the holding torque of magnechuck step-servo motor 4.The bottom of described magnechuck controlling organization is provided with tooling base 26, and the bottom of described tooling base 26 is provided with workbench 27.
A kind of grooving method of numerical control friction plate circular arc groover, carry out according to the following steps:
1., friction plate is placed on circular electromagnetic chunk 9;
2., press start button on digital control system electrical control cabinet 2;
3., circular electromagnetic chunk 9 energising produces magnetic force, and friction plate absorption is fixed, the magnetic force of circular electromagnetic chunk (9) is 80N/cm, the time of the energising of circular electromagnetic chunk 9 is 0.66 * 30 second;
4., digital control system electrical control cabinet 2 control slitting mills 6 carry out the main shaft rotation, the speed of main shaft rotation is 280r/min, the time of main shaft rotation is 0.66 * 30 second, the main shaft that digital control system electrical control cabinet 2 drives slitting mill 6 is slotted to lower feeding, after fluting is completed, main shaft upwards returns, and worm screw 16 drives worm gear 17 by definite value angle rotary calibration simultaneously, and so repetitive cycling is 30 times, the each rotating calibration of worm gear 17 is 360/30 degree, and each rotating time of worm gear 17 is 0.3 second;
5., digital control system electrical control cabinet 2 cuts off the power supply, circular electromagnetic chunk 9 demagnetizes;
6., take off friction plate;
7., friction plate is carried out relay the oil groove processing of carrying out another side on circular electromagnetic chunk 9, repetition 1～6 step after turn-over.
Embodiment 2:
A kind of grooving method of numerical control friction plate circular arc groover, carry out according to the following steps:
1., friction plate is placed on circular electromagnetic chunk 9;
2., press start button on digital control system electrical control cabinet 2;
3., circular electromagnetic chunk 9 energising produces magnetic force, and friction plate absorption is fixed, the magnetic force of circular electromagnetic chunk (9) is 80N/cm, the time of the energising of circular electromagnetic chunk 9 is 0.66 * 50 second;
4., digital control system electrical control cabinet 2 control slitting mills 6 carry out the main shaft rotation, the speed of main shaft rotation is 280r/min, the time of main shaft rotation is 0.66 * 50 second, the main shaft that digital control system electrical control cabinet 2 drives slitting mill 6 is slotted to lower feeding, after fluting is completed, main shaft upwards returns, and worm screw 16 drives worm gear 17 by definite value angle rotary calibration simultaneously, and so repetitive cycling is 50 times, the each rotating calibration of worm gear 17 is 360/50 degree, and each rotating time of worm gear 17 is 0.3 second;
5., digital control system electrical control cabinet 2 cuts off the power supply, circular electromagnetic chunk 9 demagnetizes;
6., take off friction plate;
7., friction plate is carried out relay the oil groove processing of carrying out another side on circular electromagnetic chunk 9, repetition 1～6 step after turn-over.
Embodiment 3:
A kind of grooving method of numerical control friction plate circular arc groover, carry out according to the following steps:
1., friction plate is placed on circular electromagnetic chunk 9;
2., press start button on digital control system electrical control cabinet 2;
3., circular electromagnetic chunk 9 energising produces magnetic force, and friction plate absorption is fixed, the magnetic force of circular electromagnetic chunk 9 is 80N/cm
2, the time of the energising of circular electromagnetic chunk 9 is 0.66 * 75 second;
4., digital control system electrical control cabinet 2 control slitting mills 6 carry out the main shaft rotation, the speed of main shaft rotation is 280r/min, the time of main shaft rotation is 0.66 * 75 second, the main shaft that digital control system electrical control cabinet 2 drives slitting mill 6 is slotted to lower feeding, after fluting is completed, main shaft upwards returns, and worm screw 16 drives worm gear 17 by definite value angle rotary calibration simultaneously, and so repetitive cycling is 75 times, the each rotating calibration of worm gear 17 is 360/75 degree, and each rotating time of worm gear 17 is 0.3 second;
5., digital control system electrical control cabinet 2 cuts off the power supply, circular electromagnetic chunk 9 demagnetizes;
6., take off friction plate;
7., friction plate is carried out relay the oil groove processing of carrying out another side on circular electromagnetic chunk 9, repetition 1～6 step after turn-over.
Claims (7)
1. numerical control friction plate circular arc groover, it is characterized in that: comprise bench drill (1) and digital control system electrical control cabinet (2), described bench drill is provided with the magnechuck controlling organization in (1), described bench drill (1) is by drilling machine step-servo motor (3) control that rotates, described magnechuck controlling organization is by magnechuck step-servo motor (4) control that rotates, described bench drill (1), the magnechuck controlling organization, drilling machine step-servo motor (3), magnechuck step-servo motor (4) is respectively by digital control system electrical control cabinet (2) phase control, be provided with the slitting mill (6) with the corresponding distribution of magnechuck controlling organization in described bench drill (1),
described magnechuck controlling organization comprises base (7), the top of described base (7) is provided with the turntable body (8) that is halved together with it, the top of described turntable body (8) is provided with the circular electromagnetic chunk (9) that fixes with it, be provided with equally distributed coil (10) in described circular electromagnetic chunk (9), be provided with main shaft (11) in described base (7) and turntable body (8), be provided with nylon mandrel (12) in described main shaft (11), the bottom cover of described nylon mandrel (12) has copper ring (13), described copper ring (13) is provided with the connecting line (14) that is connected with circular electromagnetic chunk (9), described copper ring (13) touches mutually with carbon brush (15), described carbon brush (15) is by digital control system electrical control cabinet (2) phase control, be provided with worm screw (16) in described base (7), the bottom lateral wall of described turntable body (8) is provided with the worm gear (17) that is meshed with worm screw (16), described worm screw (16) is fixedly connected with magnechuck step-servo motor (4).
2. a kind of numerical control friction plate circular arc groover according to claim 1, it is characterized in that: be fixedly connected by mounting flange (18) between described turntable body (8) and circular electromagnetic chunk (9), the upper end of described main shaft (11) is located between the lateral wall of the madial wall of turntable body (8) and mounting flange (18), the upper end of described nylon mandrel (12) and mounting flange (18) fix, the top of described circular electromagnetic chunk (9) be provided with equally distributed be halved together with it increase magnetic copper band (19), the bottom of described base (7) is provided with base connecting plate (20).
3. a kind of numerical control friction plate circular arc groover according to claim 2, it is characterized in that: described carbon brush (15) is located at the bottom of base connecting plate (20), between described base (7) and base connecting plate (20), fix by bolt (21) respectively between mounting flange (18) and turntable body (8), the described magnetic copper band (19) that increases is provided with 7 circles, and the described magnetic copper band (19) that increases amplifies distribution from inside to outside gradually.
4. according to claim 1 and 2 or 3 described a kind of numerical control friction plate circular arc groovers, it is characterized in that: described turntable body (8) fixes with main shaft (11), described main shaft (11) is locked by locking nut (22) mutually with base (7), be provided with pad (23) between described locking nut (22) and base (7), described circular electromagnetic chunk (9) is divided into sucker (24) and lower sucker (25), described coil (10) is halved together with upper sucker (24) and lower sucker (25) respectively, described coil (10) is provided with 3, described coil (10) amplifies distribution from inside to outside gradually.
5. according to claim 1 and 2 or 3 described a kind of numerical control friction plate circular arc groovers, it is characterized in that: described worm screw (16) is 1:90 with the gearratio of worm gear (17), the diameter of described circular electromagnetic chunk (9) is 320mm, the height of described circular electromagnetic chunk (9) is 105mm, and the rated voltage of described circular electromagnetic chunk (9) is 90W, described drilling machine step-servo motor (3) is respectively 3 with the number of phases of magnechuck step-servo motor (4), described drilling machine step-servo motor (3) is 0.6 degree with the step angle of magnechuck step-servo motor (4), described drilling machine step-servo motor (3) is respectively 30～300V with the voltage of magnechuck step-servo motor (4), described drilling machine step-servo motor (3) is respectively 3.4A with the electric current of magnechuck step-servo motor (4), described drilling machine step-servo motor (3) is respectively 12N.M with the holding torque of magnechuck step-servo motor (4).
6. according to claim 1 and 2 or 3 described a kind of numerical control friction plate circular arc groovers, it is characterized in that: the bottom of described magnechuck controlling organization is provided with tooling base (26), and the bottom of described tooling base (26) is provided with workbench (27).
7. the grooving method of a kind of numerical control friction plate circular arc groover according to claim 1 is characterized in that carrying out according to the following steps:
1., friction plate is placed on circular electromagnetic chunk (9);
2., press start button on digital control system electrical control cabinet (2);
3., circular electromagnetic chunk (9) energising produces magnetic force, and friction plate absorption is fixed, the magnetic force of circular electromagnetic chunk (9) is 80 N/cm
2, the time of the energising of circular electromagnetic chunk (9) is 0.66 * 30～75 seconds;
4., digital control system electrical control cabinet (2) control slitting mill (6) carries out the main shaft rotation, the speed of main shaft rotation is 280r/min, the time of main shaft rotation is 0.66 * 30～75 seconds, digital control system electrical control cabinet (2) drives the main shaft of slitting mill (6) and slots to lower feeding, after fluting is completed, main shaft upwards returns, worm screw (16) drives worm gear (17) by definite value angle rotary calibration simultaneously, so repetitive cycling is 30～75 times, the each rotating calibration of worm gear (17) is 360/30～75 degree, and each rotating time of worm gear (17) is 0.3 second;
5., digital control system electrical control cabinet (2) cuts off the power supply, circular electromagnetic chunk (9) demagnetizes;
6., take off friction plate;
7., friction plate is carried out relay the oil groove processing of carrying out another side on circular electromagnetic chunk (9), repetition 1～6 step after turn-over.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210467770.8A CN103100745B (en) | 2012-11-19 | 2012-11-19 | Arc notching machine of numerical control friction plate and notching method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210467770.8A CN103100745B (en) | 2012-11-19 | 2012-11-19 | Arc notching machine of numerical control friction plate and notching method thereof |
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| CN103100745A true CN103100745A (en) | 2013-05-15 |
| CN103100745B CN103100745B (en) | 2015-05-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107427937A (en) * | 2015-03-18 | 2017-12-01 | 赛峰航空器发动机 | For processing the frock of turbogenerator housing groove |
| CN108098704A (en) * | 2017-11-30 | 2018-06-01 | 芜湖戎征达伺服驱动技术有限公司 | Component test workbench |
| CN109108381A (en) * | 2018-08-27 | 2019-01-01 | 盐城加申汽车制动部件有限公司 | A kind of grooving apparatus of brake block |
| CN110788378A (en) * | 2019-11-08 | 2020-02-14 | 李雪梅 | Equipment for machining long groove of lock block |
| CN112191901A (en) * | 2020-10-26 | 2021-01-08 | 江苏安全技术职业学院 | Milling equipment for arc-shaped opening of support |
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| CN201618880U (en) * | 2010-03-17 | 2010-11-03 | 浙江上风实业股份有限公司 | Special machine tool for milling circular arc grooves |
| CN201760643U (en) * | 2010-08-19 | 2011-03-16 | 湖南常摩制造有限公司 | Processing device for reticular oil groove of friction sheet |
| CN102350515A (en) * | 2011-09-28 | 2012-02-15 | 常州源兴数控机床有限公司 | Rotary type numerical control upright drilling machine |
| CN202943318U (en) * | 2012-11-19 | 2013-05-22 | 杭州宗兴齿轮有限公司 | Numerical control friction plate arc grooving machine |
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| US3851992A (en) * | 1972-06-13 | 1974-12-03 | Toyoda Machine Works Ltd | Grooving machine tool |
| CN1033955A (en) * | 1987-12-29 | 1989-07-19 | 盛开 | Metallographic specimen polishing, polishing magnechuck |
| CN2707430Y (en) * | 2004-06-25 | 2005-07-06 | 重庆机床厂 | auxiliary rotating table with double indexes for machine tool |
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| CN201760643U (en) * | 2010-08-19 | 2011-03-16 | 湖南常摩制造有限公司 | Processing device for reticular oil groove of friction sheet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107427937A (en) * | 2015-03-18 | 2017-12-01 | 赛峰航空器发动机 | For processing the frock of turbogenerator housing groove |
| CN107427937B (en) * | 2015-03-18 | 2020-03-20 | 赛峰航空器发动机 | Tool for machining grooves of turbine engine shell |
| CN108098704A (en) * | 2017-11-30 | 2018-06-01 | 芜湖戎征达伺服驱动技术有限公司 | Component test workbench |
| CN109108381A (en) * | 2018-08-27 | 2019-01-01 | 盐城加申汽车制动部件有限公司 | A kind of grooving apparatus of brake block |
| CN110788378A (en) * | 2019-11-08 | 2020-02-14 | 李雪梅 | Equipment for machining long groove of lock block |
| CN112191901A (en) * | 2020-10-26 | 2021-01-08 | 江苏安全技术职业学院 | Milling equipment for arc-shaped opening of support |
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| Publication number | Publication date |
|---|---|
| CN103100745B (en) | 2015-05-20 |
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