CN109128247A - Fan blade perforating device - Google Patents

Fan blade perforating device Download PDF

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Publication number
CN109128247A
CN109128247A CN201811288834.1A CN201811288834A CN109128247A CN 109128247 A CN109128247 A CN 109128247A CN 201811288834 A CN201811288834 A CN 201811288834A CN 109128247 A CN109128247 A CN 109128247A
Authority
CN
China
Prior art keywords
workbench
fan blade
valve
plate
gas tank
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
CN201811288834.1A
Other languages
Chinese (zh)
Inventor
唐良兴
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.)
CHONGQING XINGLIN ELECTRICAL APPLIANCE Co Ltd
Original Assignee
CHONGQING XINGLIN ELECTRICAL APPLIANCE 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 CHONGQING XINGLIN ELECTRICAL APPLIANCE Co Ltd filed Critical CHONGQING XINGLIN ELECTRICAL APPLIANCE Co Ltd
Priority to CN201811288834.1A priority Critical patent/CN109128247A/en
Publication of CN109128247A publication Critical patent/CN109128247A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B39/00General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042Devices for removing chips
    • B23Q11/005Devices for removing chips by blowing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10Arrangements for cooling or lubricating tools or work
    • B23Q11/1038Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
    • B23Q11/1046Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using a minimal quantity of lubricant

Abstract

The present invention relates to Technology for Turning Machining fields, disclose a kind of fan blade perforating device, including rack, punch device, workbench, are arranged fluted on workbench, and the bottom of groove is provided with loss prevention hole;Hold-down mechanism is provided on two sides in groove, hold-down mechanism includes actuator, pressing plate, support plate and support shaft, and support shaft is fixed on the bottom of support plate and runs through the bottom of workbench, and the periphery of support shaft is provided with elastic component;The bottom of workbench is provided with gas tank, piston plate is slidably connected in gas tank, piston plate is fixed therein the upper of a support shaft, reversal valve is fixed in rack, the air inlet of reversal valve is connected to loss prevention hole, one gas outlet of reversal valve is connected to gas tank, another gas outlet of reversal valve is connected to gas tank;The connection strap slided with actuator, the spool connection of connection strap and reversal valve are provided on workbench.The configuration of the present invention is simple can be handled clast when fan blade is punched and after punching.

Description

Fan blade perforating device
Technical field
The present invention relates to turnery processing fields, and in particular to a kind of fan blade perforating device.
Background technique
Fan blade, i.e. flabellum are the building blocks of desk fan or ceiling fan, drive flabellum rotation, flabellum rotation by motor It can produce air-flow.
In use, fan blade is generally applied in combination by 3 or 5, in order to which the combination of multi-disc fan blade exists Together, it needs to punch in fan blade close to one end of rotor.Existing hole knockout generally by turning, specifically: will The punching end of fan blade is fixed on the table, is then punched by drilling device to fan blade.In order to avoid boring Head is contacted to after fan blade punching with workbench, needs that loss prevention hole is arranged on the table.After fan blade punching, meeting A large amount of clast is generated, clast can enter in loss prevention hole, and loss prevention hole can excessively be filled up and be influenced the company of fan blade by clast Continuous processing.Since loss prevention hole is too small, manually it is not easy to clean out the clast in loss prevention hole.
Now in order to handle the clast in loss prevention hole, rubber bar or cotton swab generally will use by the clast band in loss prevention hole Out, not only working efficiency is low in this way, is also easy to that loss prevention hole intraclast is caused to remain.
Summary of the invention
The invention is intended to provide a kind of fan blade perforating device, to solve in the loss prevention hole in existing perforating device Clast is not easy the problem of cleaning out.
To achieve the above object, the invention provides the following technical scheme: a kind of fan blade perforating device, including rack, Fluted, the bottom of groove is arranged on workbench punch device lower section and be fixed on the rack, workbench in punch device It is provided with loss prevention hole;Hold-down mechanism is provided on two sidewalls in groove, hold-down mechanism includes actuator, pressing plate, support Plate and support shaft, pressing plate are fixed on the top on the output shaft of actuator and being located at support plate, and support plate and workbench sliding connect It connects, support shaft is fixed on the bottom of support plate and runs through the bottom of workbench, and the periphery of support shaft is provided with to offset with workbench Elastic component;The bottom of workbench is provided with gas tank, and piston plate is slidably connected in gas tank, and piston plate is fixed therein a branch It supports on axis, reversal valve is fixed in rack, the air inlet of reversal valve is connected to loss prevention hole, a gas outlet of reversal valve and gas tank Connection and the top for being located at piston plate, another gas outlet of reversal valve are connected to and are located at the lower section of piston plate with gas tank;Work It is additionally provided on platform by the connection strap of actuator driving sliding, the spool connection of connection strap and reversal valve.
The principle of the present invention and the utility model has the advantages that
Support plate is used to place the punching end of fan blade, actuator driving pressing plate rotate down and push fan blade and Support plate slide downward closes actuator when support plate and workbench offset, by the above work step clamping fan blade, Avoid fan blade that positional shift occurs in drill process.At this point, the air inlet of reversal valve is connected to a gas outlet, should go out Port is connected to the gas tank above piston plate, and when support plate slide downward, support plate will push support glides downward, support shaft It will push the piston plate slide downward being attached thereto, so that the top of gas tank will form suction and suck loss prevention hole by reversal valve Interior clast.
After the hole of fan blade is accomplished fluently, start actuator, actuator is resetted with pressing plate, and elastic component will push support plate It resets, support shaft is with the piston sheet reset being attached thereto, and actuator can also be moved upwards with connection strap at this time, connection strap meeting It is commutated by spool to reversal valve, the air inlet of such reversal valve is connected to another gas outlet, the gas outlet and piston plate The gas tank of lower section is connected to.Suction is formed below piston plate and gas tank is handled the clast in loss prevention hole by reversal valve.
In conclusion when piston plate reciprocatingly slides vertically in gas tank, so that gas tank is by gas continuously in loss prevention hole Clast handled, from achieving the purpose that clean out the clast in loss prevention hole, and since gas tank is continuously to loss prevention hole Debris removal is carried out, the effect of debris removal so can be improved, to keep away without work using cotton swab and rubber strip come to broken in loss prevention hole Bits are cleared up.Fan blade is compressed by hold-down mechanism, can avoid position occurs in drill process in fan blade inclined It moves.
Further, workbench bottom is removably connected with recycling bins, and the first check valve and second is communicated on gas tank unidirectionally Valve, the first check valve are located at the top of piston plate, and second one-way valve is located at the lower section of piston plate, and the first check valve and second is unidirectionally The outlet side of valve is towards recycling bins, and the inlet end of the first check valve and second one-way valve is towards gas tank.When piston plate is upward When sliding, the clast above piston plate can be blown into recycling bins by piston plate by the first check valve, when piston plate is to downslide When dynamic, the clast below piston plate can be blown into recycling bins by piston plate by second one-way valve.Such piston plate is past vertically When sliding again, clast can also be recycled.
Further, the bottom of workbench is removably connected with liquid case, and push plate, push plate and separate gas are slidably connected in liquid case The support axis connection of case, is communicated with solenoid valve in liquid case, and solenoid valve is communicated with liquid pipe, and the outlet of liquid pipe is towards in loss prevention hole Portion.Enough water and milk cutting fluids are filled in liquid case, push plate squeezes water and milk cutting fluid.When punch device work, electromagnetism is opened Valve, water and milk cutting fluid can be sprayed towards loss prevention hole by liquid pipe, can so be cooled down to the drill bit of punch device, moreover it is possible to form protection Film protects fan blade punched hole, avoids getting rusty.
Further, the bottom of workbench is fixed with supply case, and supply case is communicated with the third check valve being connected to liquid case, the The liquid feeding end of three check valves is towards supply case, and the outlet end of third check valve is towards liquid case.In use, the water in liquid case Newborn cutting fluid can be reduced, and in push plate upward sliding, will form suction in liquid case, so that liquid case passes through third check valve from benefit Water and milk cutting fluid is extracted out to case.
Further, the upper surface of support plate is provided with buffer layer.Buffer layer forms protection to the lower surface of fan blade, When punching to fan blade, fan blade is easy to happen vibration and is subjected to displacement, and avoids fan blade by buffer layer It is subjected to displacement, while also fan blade being avoided to wear.
Further, the bottom in loss prevention hole is back taper.Clast can be slipped to bottom along the inclined-plane of back taper, to reach The purpose for concentrating clast, so facilitates gas tank to take away clast.
Further, matcoveredn is arranged far from one end of actuator in pressing plate.Protective layer forms the upper surface of fan blade Protection avoids the upper surface of pressing plate abrasion fan blade.
Detailed description of the invention
Fig. 1 is the positive cross-sectional view of fan blade perforating device in the embodiment of the present invention;
Fig. 2 is the structural schematic diagram of reversal valve in the embodiment of the present invention.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: workbench 1, rack gear 2, gear 3, pressing plate 4, protective layer 5, drill bit 6, delays Rush layer 7, liquid pipe 8, elastic component 9, support shaft 10, solenoid valve 11, third check valve 12, liquid case 13, loss prevention hole 14, reversal valve 15, Pressure spring 151, the first closing block 152, air inlet 153, the second closing block 154, spool 155, the first gas outlet 156, the second outlet Mouth 157, tracheae 16, gas tank 17, second one-way valve 18, the first check valve 19, recycling bins 20, drawstring 21, support plate 22, supply case 24。
Embodiment:
Fan blade perforating device including rack, punch device and is fixed on the rack as shown in Figure 1 and Figure 2 Workbench 1.Punch device includes drill bit 6 and the motor for driving drill bit 6 to work.
The medium position of workbench 1 open up it is fluted, the bottom of groove be provided with prevent drill bit 6 damage loss prevention hole 14, The lower end in loss prevention hole 14 is inverted-cone shape.Two sides in groove are provided with the hold-down mechanism positioned at 6 lower section of drill bit, hold-down mechanism Including actuator, pressing plate 4, support plate 22 and support shaft 10.
Actuator is any one in servo motor, stepper motor or motor, and the present embodiment selects servo motor, servo The rotation direction of the output shaft of motor is opposite.Actuator is fixed on workbench 1, is respectively and fixedly provided with gear on the output shaft of actuator 3, rotation slot is provided on workbench 1, and gear 3 is located in rotation slot.Pressing plate 4 is fixed on the end face of gear 3, and pressing plate 4 End be bonded matcoveredn 5, protective layer 5 is any one in rubber layer or sponge, and the present embodiment selects rubber layer, When pressing plate 4 compresses fan blade, protective layer 5 can avoid fan blade abrasion.
Support plate 22 is located at the lower section of pressing plate 4, and support plate 22 and the sidewalls vertical of workbench 1 are slidably connected, support The upper surface of plate 22 is bonded with buffer layer 7, and buffer layer 7 is rubber layer or spongy layer, and the present embodiment selects spongy layer, and drill bit 6 is right When punching certain vibration can occur for fan blade, and buffer layer 7 can reduce the vibration that fan blade is subject to, while avoid fan Positional shift occurs for blade.The upper end of support shaft 10 is welded on the bottom of support plate 22, and workbench 1 is run through in the lower end of support shaft 10 Bottom, support shaft 10 connect with workbench vertical sliding, and the periphery of support shaft 10 is provided with elastic component 9, and elastic component 9 is bullet Spring.The upper end of elastic component 9 is fixed on the top of support shaft 10, and the lower end of elastic component 9 is fixed on 1 top of workbench.
The left side of 1 bottom of workbench is fixed with liquid case 13 by fastening bolt, and right side is fixed with gas tank by fastening bolt 17.Vertical sliding is connected with push plate in liquid case 13, and push plate is fixedly connected with the support shaft 10 in left side.The left side wall of liquid case 13 is connected to There is solenoid valve 11, solenoid valve 11 is communicated with liquid pipe 8, and liquid pipe 8 is deformable rubber tube, and liquid pipe 8 passes through workbench 1 and is fixed on In the support plate 22 in left side, the middle part of the outlet of liquid pipe 8 towards loss prevention hole 14.The bottom of workbench 1 is removable by fastening bolt It unloads and is connected with supply case 24, supply case 24 is located at the left side of liquid case 13, and the left side wall of liquid case 13 is communicated with to be connected to supply case 24 Third check valve 12, the liquid feeding end of third check valve 12 is towards supply case 24, and the outlet end of third check valve 12 is towards liquid case 13。
Vertical sliding is connected with the piston plate being fixedly connected with the support shaft 10 on right side in gas tank 17, and the left side of gas tank 17 is set It is equipped with the reversal valve 15 being fixed on the rack.Reversal valve 15 includes valve body and spool 155, and the top of valve body is provided with and loss prevention hole The air inlet 153 of 14 connections, the bottom of valve body are provided with the first gas outlet 156 and the second gas outlet 157, horizontal sliding in valve body It is connected with the first closing block 152 being located on the left of valve body and the second closing block 154 on the right side of valve body, the first closing block 152 It is fixed together with the second closing block 154 by spool 155.The left side wall of second closing block 154 is fixed with solid with valve body Surely the pressure spring 151 connected.First gas outlet 156 and the second gas outlet 157 are communicated with tracheae 16, and tracheae 16 and gas tank 17 connect Logical, the first gas outlet 156 is located at the top of piston plate with the connectivity part of gas tank 17, and the connection of the second gas outlet 157, which goes out, is located at work The lower section of seben.Sliding slot is provided in the right side wall of workbench 1, vertical sliding is connected with connection strap in sliding slot, and connection strap is tooth It item 2 and is engaged with the gear on right side 3, the lower part of connection strap is fixed with drawstring 21, and drawstring 21 is any in nylon rope or steel wire One kind, the present embodiment select nylon rope, and drawstring 21 is fixedly connected with spool 155.
The right side of gas tank 17 is provided with the recycling bins 20 being fixed on workbench 1, and the right side of gas tank 17 is communicated with to be located at and live The first check valve 19 above seben, the second one-way valve 18 below piston plate, the first check valve 19 and second one-way valve 18 are connected to recycling bins 20.The outlet side of first check valve 19 and second one-way valve 18 is unidirectional towards recycling bins 20, first Valve 19 and the inlet end of second one-way valve 18 are towards gas tank 17.First check valve 19, second one-way valve 18 and third check valve 12 be pressure valve.
Specific implementation process is as follows:
Water and milk cutting fluid is filled in liquid case 13, when initial the air inlet 153 of reversal valve 15 respectively with loss prevention hole 14 and The connection of one gas outlet 156.It needs the one end punched to be placed in support plate 22 fan blade, starts servo motor, left side Servo motor is rotated clockwise by the gear 3 in left side with the pressing plate 4 in left side, the gear that the servo motor on right side passes through right side 3 rotate counterclockwise with the pressing plate 4 on right side.After the pressing plates 4 of two sides and fan blade offset, pressing plate 4 will push fan blade and 22 slide downward of support plate closes servo motor, at this time clamps fan blade when support plate 22 offsets with workbench 1.
During pressing plate 4 and support plate 22 clamp fan blade, the hold-down mechanism of left and right side has different Working condition.The hold-down mechanism specific works in left side are as follows: the pressing plate 4 in left side pushes the support plate 22 in left side and support shaft 10 downward Sliding, support shaft 10 drive push plate to be pressed down against the water and milk cutting fluid in liquid case 13.The hold-down mechanism specific works on right side are as follows: right The pressing plate 4 of side pushes 10 slide downward of support plate 22 and support shaft on right side, and support shaft 10 drives piston plate to move downward, and So that the gas tank 17 above piston plate forms suction, the suction that gas tank 17 is formed is inhaled by air inlet 153 and the first gas outlet 156 Enter remaining clast or the other impurities in loss prevention hole 14, the gas below piston plate will receive the extruding of piston plate, and pass through Second one-way valve 18 enters in recycling bins 20, if there are clasts below piston plate, can also be entered by second one-way valve 18 Recycling in recycling bins 20.After fan blade is compacted, servo motor is closed, so that gear 3 stops operating, gear 3 stops band 2 upward sliding of carry-over bar, during 2 upward sliding of rack gear, rack gear 2 drives drawstring 21 to overcome the pressure of pressure spring 151, drawstring 21 The Slideslip to the left of spool 155 is hauled, so that the air inlet 153 of reversal valve 15 is connected to the second air inlet 153.
When drill bit 6 drills to fan blade, solenoid valve 11 is opened, since the water and milk cutting fluid in liquid case is squeezed by push plate Pressure, water and milk cutting fluid can spray to fan blade by liquid pipe 8, and drill bit 6, which adheres to water and milk cutting fluid, to cool down, the hole in fan blade Corrosion protection can be carried out by adhering to water and milk cutting fluid, and punching the clast generated can enter in loss prevention hole 14, and extra water and milk is cut Cutting liquid can also enter in loss prevention hole 14, and concentrate on the middle part in loss prevention hole 14.
It is drilled after hole, closes solenoid valve 11, start the actuator work of two sides, the actuator in left side is inverse with gear 3 Hour hands rotation, so that the pressing plate 4 in left side rotates counterclockwise.The actuator on right side is rotated clockwise with gear 3, thus right side Pressing plate 4 rotates clockwise.The support plate 22 of two sides equal upward sliding under the action of the spring.The support shaft 10 of two sides respectively with Push plate and piston plate upward sliding.
Push plate makes liquid case 13 form suction, sucks water and milk cutting fluid by third check valve 12 and is supplemented.Piston plate So that the gas tank 17 below piston plate forms suction, the gas tank 17 below piston plate passes through air inlet 153 and the second gas outlet 157 The clast and water and milk cutting fluid in loss prevention hole 14 are sucked, the clast and gas above piston plate are under the extruding of piston plate by the One check valve 19 enters in recycling bins 20.After unclamping fan blade, actuator is closed, the gear 3 on right side stops band at this time 2 slide downward of carry-over bar, pressure spring 151 overcome the pulling force of drawstring 21, and pressure spring 151 is with spool 155, the first closing block 152 and Two closing blocks 154 Slideslip to the right, so that air inlet 153 is connected to the first gas outlet 156.
Supply case 24 and recycling bins 20 are detachably connected with workbench 1, under can dismantling supply case 24 from workbench 1 To carry out supply case 24 supplement of water and milk cutting fluid.Recycling bins 20 can be disassembled from workbench 1 in recycling bins 20 Water and milk cutting fluid and clast settle and separate, so that water and milk cutting fluid is reusable.
The above are merely the preferred embodiment of the present invention, it is noted that for those skilled in the art, not Under the premise of being detached from present inventive concept, several modifications and improvements can also be made, these also should be considered as protection model of the invention It encloses, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omit describe technology, shape, Construction portion is well-known technique.

Claims (7)

1. a kind of fan blade perforating device, including rack, punch device, below the punch device and it is fixed on the rack Workbench, it is characterised in that: be arranged fluted on workbench, the bottom of groove is provided with loss prevention hole;
Hold-down mechanism is provided on two sidewalls in groove, hold-down mechanism includes actuator, pressing plate, support plate and support Axis, pressing plate are fixed on the top on the output shaft of actuator and being located at support plate, and support plate is slidably connected with workbench, support shaft It is fixed on the bottom of support plate and runs through the bottom of workbench, the periphery of support shaft is provided with the elastic component to offset with workbench;
The bottom of workbench is provided with gas tank, and piston plate is slidably connected in gas tank, and piston plate is fixed therein a support shaft On, reversal valve is fixed in rack, the air inlet of reversal valve is connected to loss prevention hole, and a gas outlet of reversal valve is connected to gas tank And it is located at the top of piston plate, another gas outlet of reversal valve is connected to and is located at the lower section of piston plate with gas tank;
It is additionally provided on workbench by the connection strap of actuator driving sliding, the spool connection of connection strap and reversal valve.
2. a kind of fan blade perforating device according to claim 1, it is characterised in that: workbench bottom is detachably connected There are recycling bins, the first check valve and second one-way valve are communicated on gas tank, the first check valve is located at the top of piston plate, and second is single Be located at the lower section of piston plate to valve, the outlet side of the first check valve and second one-way valve towards recycling bins, the first check valve and The inlet end of second one-way valve is towards gas tank.
3. a kind of fan blade perforating device according to claim 2, it is characterised in that: the bottom of workbench detachably connects It is connected to liquid case, push plate, push plate and the support axis connection far from gas tank are slidably connected in liquid case, is communicated with solenoid valve in liquid case, Solenoid valve is communicated with liquid pipe, the middle part of the outlet of liquid pipe towards loss prevention hole.
4. a kind of fan blade perforating device according to claim 3, it is characterised in that: the bottom of workbench is fixed with benefit To case, supply case is communicated with the third check valve being connected to liquid case, and for the liquid feeding end of third check valve towards supply case, third is unidirectional The outlet end of valve is towards liquid case.
5. a kind of fan blade perforating device described in any one according to claim 1~4, it is characterised in that: support plate Upper surface is provided with buffer layer.
6. a kind of fan blade perforating device according to claim 5, it is characterised in that: the bottom in loss prevention hole is back taper Shape.
7. a kind of fan blade perforating device according to claim 6, it is characterised in that: the one end of pressing plate far from actuator Matcoveredn is set.
CN201811288834.1A 2018-10-31 2018-10-31 Fan blade perforating device Pending CN109128247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811288834.1A CN109128247A (en) 2018-10-31 2018-10-31 Fan blade perforating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811288834.1A CN109128247A (en) 2018-10-31 2018-10-31 Fan blade perforating device

Publications (1)

Publication Number Publication Date
CN109128247A true CN109128247A (en) 2019-01-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811288834.1A Pending CN109128247A (en) 2018-10-31 2018-10-31 Fan blade perforating device

Country Status (1)

Country Link
CN (1) CN109128247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113210500A (en) * 2021-07-12 2021-08-06 徐州达一重锻科技有限公司 Semi-automatic positioning punching machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113210500A (en) * 2021-07-12 2021-08-06 徐州达一重锻科技有限公司 Semi-automatic positioning punching machine

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Application publication date: 20190104