CN104139327A - Fully-automatic micro hinge pin flat grinding machine tool - Google Patents

Fully-automatic micro hinge pin flat grinding machine tool Download PDF

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Publication number
CN104139327A
CN104139327A CN201410366493.0A CN201410366493A CN104139327A CN 104139327 A CN104139327 A CN 104139327A CN 201410366493 A CN201410366493 A CN 201410366493A CN 104139327 A CN104139327 A CN 104139327A
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CN
China
Prior art keywords
grinding
wheel
gear wheel
grinding head
bistrique
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Pending
Application number
CN201410366493.0A
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Chinese (zh)
Inventor
张耀松
张静
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201410366493.0A priority Critical patent/CN104139327A/en
Publication of CN104139327A publication Critical patent/CN104139327A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/002Grinding heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention provides a fully-automatic micro hinge pin flat grinding machine tool specially used for machining micro shafts. The machine tool is formed by a machine tool body, a hopper, a grinding assembly and a correction assembly. The grinding assembly and the correction assembly are arranged on the machine tool body; the grinding assembly comprises a grinding head, a grinding head motor, a grinding head grinding wheel, a gear and a hold-down device; the correction assembly comprises a correction grinding wheel, a cross saddle and a U-turn device. All run programs of the machine tool are controlled through a computer, and running states of all parts are executed through respective motors. Various grinding parameters of the whole micro shaft flat grinding process can be set on a matched control box panel in advance. Due to the fact that a incircle intersection mode is adopted as a grinding mode, a traditional outer circle tangency grinding mode for the same kind of grinders in the prior art is thoroughly changed, workpieces cannot deflect during grinding, ground micro shafts are accurate and unified in size, and ground products are good in quality. Thus, work efficiency is high; meanwhile, the grinding head grinding wheel is not prone to losing. In addition, the machine tool can be used as a chamfering machine for ends of micro hinge pins after a part of parts of the machine tool is replaced.

Description

Full-automatic miniature bearing pin grinds flat lathe
Technical field
The present invention relates to the processing equipment of little miniature bearing pin series products, specifically refer to that the full-automatic miniature bearing pin that a kind of specialty grinds miniature end part of pin shaft lock-joint grinds flat lathe.
Background technology
Household electrical appliance in the market, the micromachine in instrument; The adjusting knob of modern numberization electronics, electric equipment products has all been widely applied miniature bearing pin, so quite large to the demand of the miniature bearing pin of this class on market.For meeting the market requirement, various places are all built the enterprise that has done the miniature bearing pins of some specialty processing in succession.These enterprises, when producing miniature bearing pin, from blanking, tack, be worked into flat, the chamfering of pivot pin mouth mill, are all to complete on special purpose machine tool.But from present circumstances, these lathes are still in semi-automatic state, production efficiency is generally not high, and often a workman can only keep off a chassis.Especially in the operation of the miniature bearing pin lock-joint of grinding, a workman keeps an eye on a machine, on one side feeding is looked out for the car on one side, work seems at full stretch.A kind of RD-24 type D-cutting that had not long ago occurred Japan is ground and is cut dish, although solved the problem that the automatic milling of miniature bearing pin lock-joint is flat and grinding head grinding wheel correction also can complete automatically.But investigate its mode that grinds to miniature bearing pin lock-joint and be by grinding head grinding wheel and the tangent mode of two cylindricals of drawing-inroller, carry out, therefore the time that the head end of every workpiece and the grinding head grinding wheel of High Rotation Speed contact is shorter, that is to say that grinding is to complete in moment to lock-joint, so impact moment during grinding is larger, be easy to like this make workpiece to produce small deflection, sometimes make unavoidably the against regulation required precision of lock-joint after grinding, thus product to grind quality very unstable.Also easier loss of grinding head grinding wheel simultaneously.So insider looks forward to and to have that a kind of to grind product quality more stable, the full-automatic miniature bearing pin of grinding head grinding wheel wear-resistant grinds flat lathe and comes out.The applicant, for above-mentioned defect, has carried out apparent significant improvement to the grinding method of workpiece on the mill of miniature bearing pin flat machine tool structure, especially grinding head grinding wheel and drawing-inroller for this reason.
Summary of the invention
The present invention seeks to provides a kind of numerically controlled full-automatic miniature bearing pin to grind flat lathe for miniature bearing pin manufacturing enterprise, not only can alleviate the workman's that keeps off a car labour intensity, raise labour productivity, can also make the constant product quality grinding, grinding head grinding wheel is also difficult for loss, thereby reduces the production cost of enterprise.
The technical scheme of technical solution problem of the present invention: full-automatic miniature bearing pin grinds flat lathe, is comprised of bed body, hopper, grinding assembly and correction assembly, on described bed body, grinding assembly is set and revises assembly.Described grinding assembly comprises bistrique, grinding head grinding wheel, gear wheel and hold down gag, and described correction assembly comprises revises emery wheel, cross saddle and slewing equipment.The notable feature of the machine is when workpiece end lock-joint is carried out to grinding, and grinding head grinding wheel cylindrical and gear wheel around the root circle relative position of teeth groove become inscribed circle intersection, and grinding head grinding wheel is outwards workpiece to be carried out to grinding from the back side.
Described bed body is rectangular box, is arranged on lathe bottom, interior electric wiring, electronic circuit board or the coolant circulation system of arranging.
Described hopper is that side is oblique triangle casing, be arranged on directly over described gear wheel, its bottom is provided with over against the spout of gear wheel teeth groove, and workpiece is dispensed to by spout in each teeth groove of gear wheel, and described hopper two sides are provided with can carry out according to Workpiece length the side plate of spacing adjusting.
Described bistrique is sleeve-like parts, above establishes the grinding head motor of variable ratio frequency changer speed governing, and bottom is connected with bed body with bistrique track base by bistrique moving carriage; In bistrique, establish grinding head shaft, grinding head shaft outer end is provided with driven pulley, drive pulley by grinding head motor rotating shaft outer end located in the above drives, and in the inner end of grinding head shaft, portion is provided with removable grinding head grinding wheel, and bistrique carries out position adjustment by the bistrique mobile motor of bottom sides.
Described gear wheel is gear-like disk, the gearbox outside that to be arranged on over against the profile of bistrique be square box body, and driven by reducing motor, described gear wheel disk perimeter 360 degree intervals are evenly provided with some teeth groove, in teeth groove, hold workpiece, the root diameter of gear wheel teeth groove is greater than the outside diameter of grinding head grinding wheel, described gear wheel, gearbox and reducing motor are erected on gear wheel moving guide rail and gear wheel moving carriage, gear wheel position and state adjustment are controlled motor and are realized from vertical or horizontal both direction by starting grinding THICKNESS CONTROL motor and grinding length, the grinding length of workpiece lock-joint can be located at the other grinding length control motor of grinding length moving carriage by bogie and regulate.
Described hold down gag comprises Work-sheet pressing belt, compensation pressing plate and tensioning bolt, also comprise the workpiece guide plate being located at above, described Work-sheet pressing belt is toothed Timing Belt, by compensation pressing plate, outwards tightly pressed to from the back side gear wheel, make tooth bar on Timing Belt be embedded in each teeth groove of gear wheel periphery and be pressed on workpiece outside, become run-in synchronism state with gear wheel.
Described correction emery wheel is located on the support with base, and the advance and retreat of described correction emery wheel are carried out by revising planker control motor on emery wheel; Described correction emery wheel its cylindrical and grinding head grinding wheel cylindrical after levelling, in tangent state, can carry out grinding correction to grinding head grinding wheel outer round surface,
Described cross saddle and slewing equipment are arranged on to be revised under emery wheel bracket base, and described cross saddle divides planker and lower planker, and described upper planker is by revising emery wheel advance and retreat Electric Machine Control; Below described lower planker, be provided with the slewing equipment being comprised of revolution worm gear and worm screw, the angle while revising emery wheel to grinding head grinding wheel correction for regulating, is carried out by revolution drive motors.
The special equipment that the present invention be directed to the miniature bearing pin lock-joint of grinding and design, all working procedure is controlled by computer, and each parts running status is driven and is controlled by each motor respectively.Minisize axial grinds the various grinding parameters of flat overall process and can on supporting control cabinet panel, set in advance.Because grinding method adopts inscribed circle, intersect mode, quiver and answered the tangent traditional grinding method of similar milling drum cylindrical in the past, so operating efficiency is high, the Minisize axial size grinding is accurate, unified, grinds good product quality, and grinding head grinding wheel is difficult for loss simultaneously.If also can make the beveler of miniature end part of pin shaft after in addition part parts being changed.
Accompanying drawing explanation
Fig. 1 is complete machine schematic perspective view of the present invention;
Fig. 2 is front of the present invention front view;
Fig. 3 is that gear wheel of the present invention and hold down gag are related to schematic diagram;
Fig. 4 is the side view of Fig. 2;
Fig. 5 is grinding head grinding wheel and correction emery wheel location diagram;
Fig. 6 is cross saddle of the present invention and slewing equipment schematic diagram;
Each several part title and numbering in figure: 1-grinding head motor, 2-hopper, 3-bed body, 4-bistrique mobile motor, 5-bistrique, 6-grinding head grinding wheel, 7-gear wheel, 8-gearbox, 9-reducing motor, 10-bistrique moving carriage, 11-bistrique track base, 12-grinding THICKNESS CONTROL motor, 13-gear wheel moving guide rail, 14-gear wheel moving carriage, 15-grinding length is controlled motor, 16-grinding length moving carriage, 17-revises planker on emery wheel and controls motor, 18-drive pulley, 19-driven pulley, 20-revolution worm gear and worm screw, 21-turns round drive motors, 22-Work-sheet pressing belt, 23-revises emery wheel, 24-workpiece guide plate, 25-compensates pressing plate, 26-tensioning bolt.
The specific embodiment
Embodiment: contrast each accompanying drawing, the present invention a kind ofly carries out end to miniature bearing pin and grinds flat special equipment, and operation is set by micro computer and omnidistance control.Full-automatic miniature bearing pin grinds flat lathe by bed body 3, hopper 2, grinding assembly and revises assembly and forms.Grinding assembly is set on bed body 3 and revises assembly.Grinding assembly comprises grinding head motor 1, grinding head grinding wheel 6, gear wheel 7 and hold down gag.Revise assembly and comprise correction emery wheel 23, cross saddle and slewing equipment.The feature of the machine is when workpiece head end lock-joint is carried out to grinding, and the gear wheel 7 of grinding head grinding wheel 6 cylindricals and the feeding around root circle relative position of teeth groove becomes inscribed circle intersection, and grinding head grinding wheel 6 is outwards workpiece to be carried out to grinding from the back side.Bed body 3 is rectangular box, is arranged on the bottom of lathe, interior electric wiring or the electronic circuit board of arranging as the pedestal of complete machine.Hopper 2 is for side is the casing of oblique triangle, be arranged on described gear wheel 7 directly over, its bottom is provided with over against the spout of gear wheel 7 teeth groove, workpiece is dispensed in each teeth groove of gear wheel 7 by spout.The two sides of hopper 2 are provided with can carry out according to Workpiece length the side plate of spacing adjusting.Bistrique 5 is sleeve-like parts, is provided with the grinding head motor 1 of variable ratio frequency changer speed governing above it, and bottom is connected with bed body 3 with bistrique track base 11 by bistrique moving carriage 10.In bistrique 5, establish grinding head shaft, grinding head shaft outer end is provided with driven pulley 19, drive pulley 18 by grinding head motor located in the above 1 rotating shaft outer end drives, and in the inner end of grinding head shaft portion, is provided with removable grinding head grinding wheel 6, and bistrique 5 can carry out position adjustment by the bistrique mobile motor 4 of bottom sides.Gear wheel 7 is gear-like disk, gearbox 8 outsides that to be arranged on over against the profile of bistrique be square box body, and driven by reducing motor 9.Gear wheel 7 disk perimeter 360 degree intervals are evenly provided with some teeth groove, hold workpiece in teeth groove.The root diameter of gear wheel 7 teeth groove is greater than the outside diameter of grinding head grinding wheel 6.Gear wheel 7, gearbox 8 and reducing motor 9 are erected on gear wheel moving guide rail 13 and gear wheel moving carriage 14, and gear wheel 7 positions and state adjustment are controlled motor 15 and realized from vertical or horizontal both direction by starting grinding THICKNESS CONTROL motor 12 and grinding length.The grinding length of workpiece lock-joint can be located at the other grinding length control motor 15 of grinding length moving carriage 16 by bogie and regulate.Hold down gag comprises Work-sheet pressing belt 22, compensation pressing plate 25 and tensioning bolt 26, also comprises the workpiece guide plate 24 being located at above.Work-sheet pressing belt 22 is toothed Timing Belt, is compensated pressing plate 25 to be outwards pressed on from the back side in the teeth groove of gear wheel 7, and the tooth bar on Timing Belt is embedded in the teeth groove of gear wheel 7 peripheries, and the workpiece that enters teeth groove is tightly pushed down.7 one-tenth run-in synchronism states of Work-sheet pressing belt 22 and gear wheel.Revise emery wheel 23 and be located on the support with base, revise the advance and retreat of emery wheel 23 and control motor 17 execution by revising planker on emery wheel; Revise emery wheel 23 its cylindrical and grinding head grinding wheel 6 cylindricals after levelling and, in tangent state, can carry out grinding correction to grinding head grinding wheel 6 outer round surface.Cross saddle and slewing equipment are arranged on to be revised under emery wheel 23 bracket bases, and cross saddle divides planker and lower planker, and upper planker carries out position adjustments by revising planker control motor 17 on emery wheel; Below lower planker, be provided with the slewing equipment being comprised of revolution worm gear and worm screw 20, the angle while revising 6 correction of 23 pairs of grinding head grinding wheels of emery wheel for regulating, is carried out by revolution drive motors 21.
Below the course of work of complete machine is described in further detail: first according to the design size of workpiece, work out procedure, then on the control panel of the machine, set various parameters.After lathe starts, each actuating motor can be adjusted position and state automatically according to computer instruction.Putting into the hopper 2 of adjusted good spacing after the alignment of workpiece two of processing.Start grinding head motor 1, lathe starts working.Workpiece in hopper 2 enters in the teeth groove of gear wheel 7 by root by the spout of bottom.Because gear wheel 7 is under reducing motor 9 and gearbox 8 drives, slow circumvolve ceaselessly, workpiece is assigned in each teeth groove of gear wheel 7 one by one through workpiece guide plate 24.Now workpiece wants one end of grinding to stretch out outside the teeth groove of gear wheel 7, just by the grinding head grinding wheel 6 outer rim grindings of High Rotation Speed.The Timing Belt tooth bar of Work-sheet pressing belt 22 is withheld tightly in the relevant teeth groove of gear wheel 7 simultaneously, and therefore workpiece can not ejected by grinding head grinding wheel 6.Workpiece head end in gear wheel 7 teeth groove enters the state of being ground, and when gear wheel 7 turns over after certain angle, workpiece head end and grinding head grinding wheel 6 depart from, and lock-joint grinds flat work and accused.Workpiece falls into charging basket below.22 pairs of gear wheel 7 pressure of Work-sheet pressing belt can regulate with tensioning bolt 26.
When the specification of workpiece converts, former grinding head grinding wheel 6 and gear wheel 7 should be unloaded, change suitable grinding head grinding wheel 6 and gear wheel 7, again on control cabinet panel, set new parameter and could work.
Lathe, after work a period of time, need to be revised grinding head grinding wheel 6 outer round surface.Now first on control cabinet panel, set corrected parameter, regulate grinding head grinding wheel 6 and the relative position of revising emery wheel 23, then start and revise emery wheel 23 runnings, and allow grinding head grinding wheel 6 also make low speed rotation, make grinding head grinding wheel 6 can obtain balanced correction.When needs carry out angular adjustment to revising emery wheel 23, can start revolution drive motors 21, the revolution worm gear in slewing equipment and worm screw 20 can automatically regulate and put in place according to instruction.

Claims (8)

1. full-automatic miniature bearing pin grinds flat lathe, by bed body (3), hopper (2), grinding assembly and correction assembly, formed, grinding assembly is set on described bed body (3) and revises assembly, described grinding assembly comprises bistrique (5), grinding head grinding wheel (6), gear wheel (7) and hold down gag, described correction assembly comprises revises emery wheel (23), cross saddle and slewing equipment, it is characterized in that when workpiece end is carried out to grinding, grinding head grinding wheel (23) cylindrical and gear wheel (7) around the root circle relative position of teeth groove become inscribed circle intersection.
2. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described bed body (3), for rectangular box, is arranged on lathe bottom.
3. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described hopper (2) is oblique triangle casing for side, be arranged on directly over described gear wheel (7), its bottom is provided with over against the spout of gear wheel (7) teeth groove, and described hopper (2) two sides are provided with can carry out according to Workpiece length the side plate of spacing adjusting.
4. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described bistrique (5) is sleeve-like parts, on establish the grinding head motor (1) of variable ratio frequency changer speed governing, bottom is connected with a body (3) by bistrique moving carriage (10) and bistrique track base (11); Bistrique is established grinding head shaft in (5), grinding head shaft outer end is provided with driven pulley (19), drive pulley (18) by grinding head motor located in the above (1) rotating shaft outer end drives, in the inner end of grinding head shaft portion, be provided with removable grinding head grinding wheel (6), bistrique (5) carries out position adjustment by the bistrique mobile motor (4) of bottom sides.
5. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described gear wheel (7) is gear-like disk, gearbox (8) outside that to be arranged on over against the profile of bistrique (5) be square box body, and driven by reducing motor (9), described gear wheel (7) disk perimeter 360 degree intervals are evenly provided with some teeth groove, in teeth groove, hold workpiece, the root diameter of gear wheel (7) teeth groove is greater than the outside diameter of grinding head grinding wheel (6), described gear wheel (7), gearbox (8) and reducing motor (9) are erected on gear wheel moving guide rail (13) and gear wheel moving carriage (14), gear wheel (7) position and state adjustment are controlled motor (15) and are realized from vertical or horizontal both direction by starting grinding THICKNESS CONTROL motor (12) and grinding length, the grinding length of workpiece pin key groove can be located at the other grinding length control motor (15) of grinding length moving carriage (16) by bogie and regulate.
6. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described hold down gag comprises Work-sheet pressing belt (22), compensation pressing plate (25) and tensioning bolt (26), also comprise the workpiece guide plate (24) being located at above, described Work-sheet pressing belt (22) is toothed Timing Belt, by compensation pressing plate (25), outwards tightly pressed to from the back side gear wheel (7), make tooth bar on Timing Belt be embedded in each teeth groove of gear wheel (7) periphery and be pressed on workpiece outside, become run-in synchronism state with gear wheel (7).
7. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described correction emery wheel (23) is located on the support with base, support is fixed on the upper planker of cross saddle, the advance and retreat of revising emery wheel (23) are controlled motor (17) and are carried out by revising on emery wheel planker, described correction emery wheel (23) after levelling its cylindrical and grinding head grinding wheel (6) cylindrical in tangent state.
8. full-automatic miniature bearing pin according to claim 1 grinds flat lathe, it is characterized in that described cross saddle and slewing equipment are arranged under correction emery wheel (23) bracket base, described cross saddle divides planker and lower planker, below described lower planker, be provided with the slewing equipment being formed by revolution worm gear and worm screw (20), by revolution drive motors (21), carried out.
CN201410366493.0A 2014-07-27 2014-07-27 Fully-automatic micro hinge pin flat grinding machine tool Pending CN104139327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410366493.0A CN104139327A (en) 2014-07-27 2014-07-27 Fully-automatic micro hinge pin flat grinding machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410366493.0A CN104139327A (en) 2014-07-27 2014-07-27 Fully-automatic micro hinge pin flat grinding machine tool

Publications (1)

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CN104139327A true CN104139327A (en) 2014-11-12

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Application Number Title Priority Date Filing Date
CN201410366493.0A Pending CN104139327A (en) 2014-07-27 2014-07-27 Fully-automatic micro hinge pin flat grinding machine tool

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104551962A (en) * 2015-01-08 2015-04-29 佛山市固高自动化技术有限公司 Screw ball head surface polishing machine
CN107114867A (en) * 2017-06-02 2017-09-01 章健伟 A kind of midsole automatic trimming device
CN110480484A (en) * 2019-09-12 2019-11-22 无锡盛烨特邦新材料科技有限公司 What automatic intelligent exempted from glue fiber flat axe-shape nib equipment for grinding exempts from glue fiber nib step grinding attachment ax-shaped
CN113146388A (en) * 2021-05-10 2021-07-23 无锡威孚马山油泵油嘴有限公司 Plunger flat position processing device and processing method thereof
CN113752100A (en) * 2021-04-12 2021-12-07 深圳市誉和钻石工具有限公司 Multifunctional precise special-shaped cutter grinding machine tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104551962A (en) * 2015-01-08 2015-04-29 佛山市固高自动化技术有限公司 Screw ball head surface polishing machine
CN104551962B (en) * 2015-01-08 2017-11-17 佛山市固高自动化技术有限公司 A kind of screw spherical surface polishing machine
CN107114867A (en) * 2017-06-02 2017-09-01 章健伟 A kind of midsole automatic trimming device
CN107114867B (en) * 2017-06-02 2022-07-22 章健伟 Automatic trimming device for insole
CN110480484A (en) * 2019-09-12 2019-11-22 无锡盛烨特邦新材料科技有限公司 What automatic intelligent exempted from glue fiber flat axe-shape nib equipment for grinding exempts from glue fiber nib step grinding attachment ax-shaped
CN113752100A (en) * 2021-04-12 2021-12-07 深圳市誉和钻石工具有限公司 Multifunctional precise special-shaped cutter grinding machine tool
CN113146388A (en) * 2021-05-10 2021-07-23 无锡威孚马山油泵油嘴有限公司 Plunger flat position processing device and processing method thereof
CN113146388B (en) * 2021-05-10 2024-01-02 无锡威孚马山油泵油嘴有限公司 Plunger flat processing device and processing method thereof

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Application publication date: 20141112