CN107953159A - A kind of machine for inactivating - Google Patents

A kind of machine for inactivating Download PDF

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Publication number
CN107953159A
CN107953159A CN201711360324.6A CN201711360324A CN107953159A CN 107953159 A CN107953159 A CN 107953159A CN 201711360324 A CN201711360324 A CN 201711360324A CN 107953159 A CN107953159 A CN 107953159A
Authority
CN
China
Prior art keywords
screw
mounting base
inactivating
rack
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711360324.6A
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Chinese (zh)
Inventor
虞荣江
颜宁宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou United States And Japan New Energy Co Ltd
Original Assignee
Taizhou United States And Japan New Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taizhou United States And Japan New Energy Co Ltd filed Critical Taizhou United States And Japan New Energy Co Ltd
Priority to CN201711360324.6A priority Critical patent/CN107953159A/en
Publication of CN107953159A publication Critical patent/CN107953159A/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
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • 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
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • 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
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation

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

Abstract

The present invention provides a kind of machine for inactivating, belong to field of mechanical technique.It is more inconvenient that it solves the problems, such as that a kind of existing machine for inactivating uses.A kind of this machine for inactivating, including rack and the workbench being arranged in rack, the motor that rack is equipped with emery wheel and drives emery wheel to rotate, workbench is equipped with mounting base, the collet chuck fixed cylinder for fixing collet chuck is fixed with mounting base, rack is equipped with the driving mechanism that can drive the mounting base alternating translational, rack is equipped with feeler block, feeler block is located at the side of emery wheel, with being obliquely installed to knife face, the end for the cutter that driving mechanism can drive mounting base mobile and enable to be installed in collet chuck fixed cylinder is abutted in knife face the side wall of feeler block.A kind of this machine for inactivating has the advantages that the installation site that can detect cutter and using more convenient.

Description

A kind of machine for inactivating
Technical field
The invention belongs to field of mechanical technique, is related to a kind of machine for inactivating.
Background technology
Drill bit is to be used to the drilling on solid material go out through hole or blind hole, and the cutter for the hole reaming that can have oneself.It is common Drill bit processing method be grinding, and processing is passivated to the drill bit after processing, passivation is to keep the strong of blade Spend and carry out the technique of blade processing, act to prevent tipping during processing and cross quick-wearing.Common drill bit passivating method is Processing is passivated to drill bit using drill bit machine for inactivating, traditional drill bit machine for inactivating needs worker to hold drill bit, makes the knife of drill bit Sword is brushed close to wheel, and worker controls passivation amount with the feel of oneself, and the hand of worker is also easy to produce shake in passivating process, influences to be passivated Amount, so that passivation precision reduces.
A kind of automatic drill bit machine for inactivating and drill bit system of processing (application number as disclosed in Chinese patent literature: 201610898584.8), including:Rack, wheel brush, wheel brush driving mechanism, drill bit supporting mechanism and drill bit feed mechanism, drill bit into Include to mechanism:First workbench and the second workbench, drill bit supporting mechanism and the first workbench are rotatablely connected, the first workbench It is slidably connected with the second workbench, the second workbench is connected with housing slide;First workbench moves in the first direction, the second work Make platform to move in a second direction, first direction is vertical with second direction, and first direction and second direction are parallel with horizontal plane.But The automatic drill bit machine for inactivating is not provided with tool setting device to being passivated the detection of the installation site of cutter, it is therefore desirable to often carries out Adjustment to the installation site of cutter, therefore its use is more inconvenient.
The content of the invention
The purpose of the present invention is for existing technology, there are the above problem, it is proposed that a kind of installation that can detect cutter Position and use conveniently machine for inactivating.
The purpose of the present invention can be realized by following technical proposal:A kind of machine for inactivating, including rack and it is arranged on machine Workbench on frame, the rack is equipped with emery wheel and drives the motor of the emery wheel rotation, on the workbench Equipped with mounting base, the collet chuck fixed cylinder for fixing collet chuck is fixed with the mounting base, it is characterised in that the rack The driving mechanism of the mounting base alternating translational can be driven by being equipped with, and the rack is equipped with feeler block, pair Cutter block is located at the side of the emery wheel, the side wall of the feeler block have be obliquely installed to knife face, the driving machine The end for the cutter that structure can drive the mounting base mobile and enable to be installed in collet chuck fixed cylinder abuts in described To knife face.
When in use, the collet chuck equipped with cutter is put into one end of collet chuck fixed cylinder, is consolidated collet chuck by locking swivel nut It is scheduled on one end of collet chuck fixed cylinder.Drive the mounting base to translate by driving mechanism, the outer end face of cutter is resisted against pair The placement angle on knife face, detecting cutter of cutter block.Drive mounting base reversely to translate by driving mechanism again, drive mounting base Moved backward with cutter close to emery wheel, realize the passivation to cutting edge roundness, a kind of this machine for inactivating has the peace that can detect cutter Holding position, using more convenient and there is higher work efficiency.
In a kind of above-mentioned machine for inactivating, the workbench is equipped with planker, and the mounting base is arranged on planker And the planker can drive the mounting base to move back and forth, the driving mechanism includes axial be connected in rack Screw and the motor that the screw can be driven to rotate, be fixed with screw on the planker and the screw with it is described Wire rod thread be connected.Driving mechanism drives planker to move back and forth using motor by the transmission of screw screw, has transmission can The advantages of leaning on and being easy to control planker translational speed.
In a kind of above-mentioned machine for inactivating, the driving mechanism is connected in the oil cylinder in the rack, institute for cylinder body The piston rod for the oil cylinder stated is fixedly connected with the planker.Driving mechanism uses oil cylinder, has simple in structure, easy for installation and work Make the advantages of relatively stable.
In a kind of above-mentioned machine for inactivating, sliding block is fixed with the downside of the planker, is fixed with the workbench Slide and the slide are in the sliding slot of the sliding block.Sliding block makes driving mechanism drive the past of planker in sliding slot Multiple translation has preferable guiding role.
In a kind of above-mentioned machine for inactivating, adjustable plate, the peace are equipped between the mounting base and the planker The lower end of dress seat is connected on the adjustable plate, and the adjustable plate is equipped with perforative arc-shaped through-hole, and the arc leads to Hole is equipped with lock-screw one and the lock-screw one passes through the arc-shaped through-hole and is fixedly connected with the planker.When When needing to adjust the angle of mounting base, lock-screw one is unclamped, adjustable plate is rotated to required position, is in locking lock-screw one Can, it is fixedly connected with by lock-screw one through arc-shaped through-hole and with planker, with adjusting, more convenient and structure is relatively simple Advantage.
In a kind of above-mentioned machine for inactivating, the mounting base is equipped with perforative strip through-hole and the strip through-hole In being vertically arranged, lock-screw two is equipped with the strip through-hole and the lock-screw two leads to through the bar shaped Collet chuck screw thread described in Kong Bingyu is fixedly connected with.Lock-screw two is fixedly connected with through strip through-hole and with collet chuck fixed cylinder screw thread, just In adjusting vertical position of the collet chuck with respect to mounting base, have the advantages that to adjust more convenient.
In a kind of above-mentioned machine for inactivating, the upside of the mounting base is equipped with for the insertion from top to bottom of collet chuck fixed cylinder Mounting groove, the inner of the lock-screw two are located in mounting groove.Collet chuck fixed cylinder is inserted into mounting groove from top to bottom, is led to Cross lock-screw two collet chuck fixed cylinder is connected in mounting base, have the advantages that to dismount and adjust more convenient.
In a kind of above-mentioned machine for inactivating, adjustable plate two is equipped between the feeler block and the rack, it is described Adjustable plate two is equipped with perforative bar-shaped trough, and the bar-shaped trough is equipped with adjusting screw one, and the adjusting screw one passes through The bar-shaped trough is fixedly connected with the rack.It is fixedly connected with by adjusting screw one through bar-shaped trough with rack, has and adjust The advantages of convenient and structure is relatively simple.
In a kind of above-mentioned machine for inactivating, one end of the feeler block is hinged on the adjustable plate two, described The other end of feeler block is equipped with the sliding slot of bar shaped, and adjusting screw two and the adjusting are threaded with the adjustable plate two The other end of screw two is in the sliding slot.Adjusting screw two is set to promote feeler block to rotate by rotating adjusting screw two, Realize the angular adjustment to knife face to feeler block, have the advantages that simple in structure and adjust more convenient.
In a kind of above-mentioned machine for inactivating, the collet chuck fixed cylinder is equipped with the extension rod of tubular, and the collet chuck is consolidated One end of extension rod is connected in, the collet chuck fixed cylinder screw is connected with indexing pin, and the inner of the indexing pin is supported Lean against on the extension rod.By indexing pin, indexing that can be to extension rod is spacing, and the different cutting edges progress to cutter is blunt Change.
Compared with prior art, a kind of this machine for inactivating has the following advantages:
1st, drive mounting base to translate by driving mechanism, make cutter outer end face be resisted against feeler block on knife face, inspection The placement angle of cutter is surveyed, then drives mounting base reversely to translate by driving mechanism, drives mounting base and cutter reverse movement to lean on Nearly emery wheel, realizes the passivation to cutting edge roundness, a kind of this machine for inactivating have can detect the installation site of cutter, using more square Just and there is higher work efficiency;
2nd, driving mechanism drives planker to move back and forth using motor by the transmission of screw screw, with reliable transmission and just In control planker translational speed the advantages of;
3rd, when needing to adjust the angle of mounting base, lock-screw one is unclamped, adjustable plate is rotated to required position, is locking Lock-screw one, is fixedly connected with through arc-shaped through-hole and with planker by lock-screw one, is had and is adjusted more convenient and tie The advantages of structure is relatively simple;
4th, it is fixedly connected with by adjusting screw one through bar-shaped trough and rack, with easy to adjust and relatively simple structure excellent Point.
Brief description of the drawings
Fig. 1 is a kind of this schematic perspective view of machine for inactivating.
Fig. 2 is the schematic cross-sectional view of a kind of this adjustable plate two of machine for inactivating another way and feeler block.
In figure, 1, rack;2nd, workbench;3rd, emery wheel;4th, mounting base;4a, strip through-hole;4b, mounting groove;5th, collet chuck is fixed Cylinder;6th, driving mechanism;6a, screw;6b, screw;7th, feeler block;7a, to knife face;7b, sliding slot;8th, planker;9th, adjustable plate;9a、 Arc-shaped through-hole;10th, lock-screw one;11st, lock-screw two;12nd, adjustable plate two;12a, bar-shaped trough;13rd, adjusting screw one;14、 Adjusting screw two;15th, extension rod;16th, pin is indexed.
Embodiment
It is the specific embodiment of the present invention and with reference to attached drawing below, technical scheme is further described, But the present invention is not limited to these embodiments.
As shown in Figure 1, a kind of machine for inactivating, including rack 1 and the workbench 2 that is arranged in rack 1, rack 1 are equipped with Emery wheel 3 and the motor for driving emery wheel 3 to rotate, workbench 2 are equipped with mounting base 4, are fixed with mounting base 4 for fixing collet chuck Collet chuck fixed cylinder 5, rack 1, which is equipped with, can drive the driving mechanism 6 of 4 alternating translational of mounting base, and rack 1 is equipped with feeler block 7, feeler block 7 is located at the side of emery wheel 3, and adjustable plate 2 12 is equipped between feeler block 7 and rack 1, and adjustable plate 2 12 is equipped with and passes through The bar-shaped trough 12a worn, bar-shaped trough 12a are equipped with adjusting screw 1, and adjusting screw 1 passes through bar-shaped trough 12a and 1 phase of rack It is connected, adjustable plate 2 12 is structure as a whole with feeler block 7.The side wall of feeler block 7 have be obliquely installed to knife face 7a, driving machine The end for the cutter that structure 6 can drive mounting base 4 to move and enable to be installed in collet chuck fixed cylinder 5 abuts in described to knife Face 7a.
Workbench 2 is equipped with planker 8, and mounting base 4 is arranged on planker 8, and driving mechanism 6 includes axially being connected in rack 1 On screw 6a and motor that screw 6a can be driven to rotate, be fixed with screw 6b and the screw 6b and institute on planker 8 The screw 6a screw threads stated are connected.As preference, driving mechanism 6 is connected in the oil cylinder in rack 1, the piston rod of oil cylinder for cylinder body It is fixedly connected with planker 8.
The downside of planker 8 is fixed with sliding block, and slide is fixed with workbench 2 and slide is in the sliding slot 7b of sliding block.Peace Adjustable plate 9 is equipped between dress seat 4 and the planker 8, the lower end of mounting base 4 is connected on adjustable plate 9, and adjustable plate 9 is equipped with Perforative arc-shaped through-hole 9a, arc-shaped through-hole 9a be equipped with lock-screw 1 and lock-screw 1 through arc-shaped through-hole 9a and with The planker 8 is fixedly connected with.
Mounting base 4 is equipped with perforative strip through-hole 4a and strip through-hole 4a is in being vertically arranged, and is worn in strip through-hole 4a There is lock-screw 2 11 and lock-screw 2 11 passes through strip through-hole 4a and is fixedly connected with 5 screw thread of collet chuck fixed cylinder.Mounting base 4 Upside is equipped with the mounting groove 4b being embedded in from top to bottom for collet chuck fixed cylinder 5, and the inner of lock-screw 2 11 is located in mounting groove 4b, Collet chuck fixed cylinder 5 is inserted into mounting groove 4b from top to bottom, collet chuck fixed cylinder 5 is connected in by mounting base by lock-screw 2 11 On 4, have the advantages that to dismount and adjust more convenient.
Collet chuck fixed cylinder 5 is equipped with the extension rod 15 of tubular, and collet chuck is connected in one end of extension rod 15, collet chuck fixed cylinder 5 Screw is connected with indexing pin 16, and the inner of indexing pin 16 is resisted against on extension rod 15., can be right by indexing pin 16 The indexing of extension rod 15 is spacing, and the different cutting edges of cutter are passivated.
When in use, the collet chuck equipped with cutter is put into one end of collet chuck fixed cylinder 5, is consolidated collet chuck by locking swivel nut It is scheduled on one end of collet chuck fixed cylinder 5.Motor by the transmission of screw 6a and screw 6b drive planker 8 and mounting base 4 along The guiding of guide rail and sliding block translate, make cutter outer end face be resisted against feeler block 7 on knife face 7a, detecting the putting angle of cutter Degree.Then motor reversal and drive planker 8 and mounting base 4 reversely to translate by screw 6a and screw 6b, drive mounting base 4 Moved backward with cutter close to emery wheel 3, realize the passivation to cutting edge roundness.A kind of this machine for inactivating has the peace that can detect cutter Holding position, using more convenient and there is higher work efficiency.
When needing to adjust the angle of mounting base 4, lock-screw 1 is unclamped, adjustable plate 9 is rotated and arrives required position, locking Tight lock-screw 1, is fixedly connected with through arc-shaped through-hole 9a and with planker 8 by lock-screw 1, is had and is adjusted more The advantages of convenient and structure is relatively simple;When needing to adjust the vertical position of the opposite mounting base 4 of collet chuck, lock-screw two is unclamped 11, the clamping safety barrel 5 of moving cylinder arrives required position, then locks lock-screw 2 11 and wear, easy to adjust collet chuck with respect to mounting base 4 Vertical position, have the advantages that adjust it is more convenient.
Alternatively, as shown in Fig. 2, being equipped with adjustable plate 2 12, adjustable plate 2 12 between feeler block 7 and rack 1 Perforative bar-shaped trough 12a is equipped with, bar-shaped trough 12a is equipped with adjusting screw 1, and adjusting screw 1 passes through the bar shaped Groove 12a is fixedly connected with the rack 1.One end of feeler block 7 is hinged on adjustable plate 2 12, and the other end of feeler block 7 is equipped with The sliding slot 7b of bar shaped, is threaded with adjusting screw 2 14 on adjustable plate 2 12 and the other end of adjusting screw 2 14 is embedded in sliding slot In 7b.Make adjusting screw 2 14 promote feeler block 7 to rotate by rotating adjusting screw 2 14, realize to feeler block 7 to knife face The angular adjustment of 7a, has the advantages that simple in structure and adjusts more convenient.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Although be used more herein rack 1, workbench 2, emery wheel 3, mounting base 4, strip through-hole 4a, mounting groove 4b, Collet chuck fixed cylinder 5, driving mechanism 6, screw 6a, screw 6b, feeler block 7, to knife face 7a, sliding slot 7b, planker 8, adjustable plate 9, arc Shape through hole 9a, lock-screw 1, lock-screw 2 11, adjustable plate 2 12, bar-shaped trough 12a, adjusting screw 1, adjusting screw 2 14, the term such as extension rod 15, indexing pin 16, but it does not preclude the possibility of using other terms.Using these terms only Merely to more easily describe and explain the essence of the present invention;Being construed as any one of the additional limitations is all and this What spirit was disagreed.

Claims (10)

1. a kind of machine for inactivating, including rack (1) and the workbench (2) that is arranged in rack (1), the rack are set on (1) The motor for having emery wheel (3) and driving the emery wheel (3) to rotate, the workbench (2) is equipped with mounting base (4), described Mounting base (4) on be fixed with collet chuck fixed cylinder (5) for fixing collet chuck, it is characterised in that the rack (1) is equipped with The driving mechanism (6) of the mounting base (4) alternating translational can be driven, the rack (1) is equipped with feeler block (7), institute The feeler block (7) stated is located at the side of the emery wheel (3), the side wall of the feeler block (7) have be obliquely installed to knife Face (7a), the driving mechanism (6) can drive the mounting base (4) mobile and make to be installed in collet chuck fixed cylinder (5) Cutter end can abut in it is described to knife face (7a).
A kind of 2. machine for inactivating according to claim 1, it is characterised in that the workbench (2) is equipped with planker (8), The mounting base (4) is arranged on planker (8) and the planker (8) can drive the mounting base (4) to move back and forth, The driving mechanism (6) includes the axial screw (6a) being connected in rack (1) and can drive the screw (6a) The motor of rotation, screw (6b) is fixed with the planker (8) and the screw (6b) and described screw (6a) screw thread It is connected.
3. a kind of machine for inactivating according to claim 1, it is characterised in that the driving mechanism (6) is connected in for cylinder body Oil cylinder in the rack (1), the piston rod of the oil cylinder are fixedly connected with the planker (8).
A kind of 4. machine for inactivating according to claim 1, it is characterised in that sliding block is fixed with the downside of the planker (8), Slide is fixed with the workbench (2) and the slide is in the sliding slot of the sliding block.
5. according to a kind of machine for inactivating described in claim 1 or 2 or 3 or 4, it is characterised in that the mounting base (4) with it is described Planker (8) between be equipped with adjustable plate (9), the lower end of the mounting base (4) is connected on the adjustable plate (9), described Adjustable plate (9) be equipped with perforative arc-shaped through-hole (9a), the arc-shaped through-hole (9a) be equipped with lock-screw one (10) and The lock-screw one (10) is fixedly connected with through the arc-shaped through-hole (9a) and with the planker (8).
6. according to a kind of machine for inactivating described in claim 1 or 2 or 3 or 4, it is characterised in that the mounting base (4) is equipped with Perforative strip through-hole (4a) and the strip through-hole (4a) are in be vertically arranged, and lock is equipped with the strip through-hole (4a) Tight screw two (11) and the lock-screw two (11) through the strip through-hole (4a) and with the collet chuck fixed cylinder (5) screw thread is fixedly connected with.
7. a kind of machine for inactivating according to claim 6, it is characterised in that the upside of the mounting base (4) is equipped with and supplies cylinder Clamping safety barrel (5) mounting groove (4b) embedded from top to bottom, the inner of the lock-screw two (11) is located at mounting groove (4b) It is interior.
8. according to a kind of machine for inactivating described in claim 1 or 2 or 3 or 4, it is characterised in that the feeler block (7) with it is described Rack (1) between be equipped with adjustable plate two (12), the adjustable plate two (12) is equipped with perforative bar-shaped trough (12a), described Bar-shaped trough (12a) be equipped with adjusting screw one (13), the adjusting screw one (13) through the bar-shaped trough (12a) with The rack (1) is fixedly connected with.
9. a kind of machine for inactivating according to claim 8, it is characterised in that one end of the feeler block (7) is hinged on institute On the adjustable plate two (12) stated, the other end of the feeler block (7) is equipped with the sliding slot (7b) of bar shaped, the adjustable plate two (12) other end that adjusting screw two (14) and the adjusting screw two (14) are threaded with is embedded in the sliding slot In (7b).
10. according to a kind of machine for inactivating described in claim 1 or 2 or 3 or 4, it is characterised in that the collet chuck fixed cylinder (5) The extension rod (15) of tubular is equipped with, the collet chuck is connected in one end of extension rod (15), described collet chuck fixed cylinder (5) spiral shell Nail is connected with indexing pin (16), and the inner of the indexing pin (16) is resisted against on the extension rod (15).
CN201711360324.6A 2017-12-15 2017-12-15 A kind of machine for inactivating Pending CN107953159A (en)

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Application Number Priority Date Filing Date Title
CN201711360324.6A CN107953159A (en) 2017-12-15 2017-12-15 A kind of machine for inactivating

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Publication Number Publication Date
CN107953159A true CN107953159A (en) 2018-04-24

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CN108772468A (en) * 2018-06-11 2018-11-09 安陆市华誉金属网机制造有限公司 Discharging slide carriage angle regulator for metal mesh punching and shearing machine
CN111451850A (en) * 2020-05-18 2020-07-28 浙江台星智能装备有限公司 Drill bit grinding machine
WO2022052159A1 (en) * 2020-09-08 2022-03-17 浙江美日智能装备有限公司 Drill bit grinding machine

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Publication number Priority date Publication date Assignee Title
CN108772468A (en) * 2018-06-11 2018-11-09 安陆市华誉金属网机制造有限公司 Discharging slide carriage angle regulator for metal mesh punching and shearing machine
CN108772468B (en) * 2018-06-11 2024-01-12 安陆市华誉金属网机制造有限公司 Discharge slide carriage angle adjusting device for metal mesh punching and shearing machine
CN111451850A (en) * 2020-05-18 2020-07-28 浙江台星智能装备有限公司 Drill bit grinding machine
WO2022052159A1 (en) * 2020-09-08 2022-03-17 浙江美日智能装备有限公司 Drill bit grinding machine

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