CN108746712A - A kind of multistation button perforating device - Google Patents
A kind of multistation button perforating device Download PDFInfo
- Publication number
- CN108746712A CN108746712A CN201810489043.9A CN201810489043A CN108746712A CN 108746712 A CN108746712 A CN 108746712A CN 201810489043 A CN201810489043 A CN 201810489043A CN 108746712 A CN108746712 A CN 108746712A
- Authority
- CN
- China
- Prior art keywords
- hole
- screwed
- fixed seat
- main body
- button
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
- B23B39/161—Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to button processing technique fields;The present invention proposes a kind of multistation button perforating device, further include being slideably positioned in the operation beam at support frame as described above, the punching unit that the end for operating beam is rotatably connected in by screw thread and the luggage carrier for being welded in the lower end on the right side of the upper end of the pedestal and positioned at the punching unit including pedestal and the supporting rack being connected on the left of the pedestal upper end;Support frame as described above is cylindric, the first round dimple is recessed at the top of support frame as described above, the inner wall of the described first round dimple is thread-like structure.Button is positioned at the annular groove of fixed block by the present invention, is made button be located at the lower end of drill bit by rotating moving block, is next controlled driving motor and drill bit is made to start to rotate, then controls telescopic cylinder and drill bit is declined to carry out boring work.
Description
Technical field
The present invention relates to button processing technique field more particularly to a kind of multistation button perforating devices.
Background technology
Button needs to punch it in process of production, but traditional button puncher structure is too simple, beats
Hole effect is poor, and traditional button puncher can only carry out the punching of single button in an equipment so that perforating efficiency
Difference, and traditional button puncher controllability is too poor, can no longer meet the growth requirement of today's society.
Therefore, we are it is necessary to improve such a structure, to overcome drawbacks described above.
Invention content
The object of the present invention is to provide a kind of multistation button perforating devices.
The present invention is technical solution used by solving its technical problem:
A kind of multistation button perforating device, including pedestal and the supporting rack that is connected on the left of the pedestal upper end, also
Including be slideably positioned in operation beam at support frame as described above, be rotatably connected in by screw thread the operation beam end punching unit with
And it is welded in the luggage carrier of the lower end on the right side of the upper end of the pedestal and positioned at the punching unit;Support frame as described above is cylinder
Shape is recessed with the first round dimple at the top of support frame as described above, and the inner wall of the described first round dimple is thread-like structure;
The rocking arm that the operation beam includes operating main body and is welded on the right side of the operating main body, the operating main body are
Cylinder is equipped with the first circular through hole in the inner along the axial direction of the operating main body, first circular through hole with it is described
Supporting rack is adapted, and the left end of the rocking arm is equipped with first and is screwed on hole, and the described first inner wall for being screwed on hole is shape of threads
Structure;It is further fixed on mounting base at the top of support frame as described above, the mounting base includes mounting base main body and is welded in the peace
The mounting plate of seat body side is filled, the mounting base main body is cylindrical structure, and the outer wall of the mounting base main body is shape of threads
Structure, the mounting base main body are rotatably connected in by screw thread at the described first round dimple, and the intermediate position of the mounting plate is worn
There are the second circular through hole, the upper end of the mounting plate to be fastened by bolts telescopic cylinder, the piston rod of the telescopic cylinder is worn
It crosses the second circular through hole and extends to the lower end of the mounting plate, the piston-rod end of the telescopic cylinder is screwed on described first
Hole is screwed on;
The quantity of the punching unit is two, and the punching unit includes motor mount, is fastened by bolts in institute
The drill bit stated the driving motor of the lower end of motor mount and be connected with the output shaft end of the driving motor;
The luggage carrier includes pedestal, be welded in the pedestal upper end mounting disc, be welded in the upper of the mounting disc
The first fixed seat for holding left side, the second fixed seat being welded on the right side of the upper end of the mounting disc, be rotatably connected in by screw thread it is described
The first leading screw between first fixed seat and second fixed seat, be sheathed on first leading screw right-hand end moving block
And the button fixed seat of the outside of first leading screw is rotatably connected in by screw thread.
Further, the rocking arm is rectangular parallelepiped structure, and rocking arm right-hand end lower surface is also recessed round there are two second
The inner wall of dimple, the described second round dimple is thread-like structure;The motor mount is "convex" shaped structure, the motor
The top of mounting base is cylindrical structure, and the external wall of upper portion of the motor mount is thread-like structure, the motor mount
Top be rotatably connected in the described second round dimple by screw thread, position is also recessed with the among the bottom of the motor mount
One buckling groove, the both sides of first buckling groove are equipped with second and are screwed on hole, and the described second inner wall for being screwed on hole is shape of threads
Structure.
Further, the top both sides of the driving motor are both provided with connection sheet, and the connection sheet is " L " shape structure,
The third hole and the 4th that is screwed on is equipped at the connection sheet respectively to be screwed on hole, the third hole that is screwed on is screwed on hole with the described 4th
Inner wall is thread-like structure, and the first bolt is screwed on across third and hole and connection sheet is anchored at the driving motor,
Two bolts are screwed on across the 4th and hole and connection sheet is anchored on to described second is screwed at hole, and the top of the driving motor is clamped
In in first buckling groove.
Further, the mounting disc is discoid, and first fixed seat has identical knot with second fixed seat
Structure, first fixed seat are symmetrically disposed on the both sides of the mounting disc with second fixed seat, first fixed seat
Intermediate position is equipped with the 5th and is screwed on hole, and the intermediate position of second fixed seat is equipped with the 6th and is screwed on hole, the 5th rotation
It is shape of threads to connect hole and the described 6th inner wall for being screwed on hole, and the described 5th hole and the described 6th that is screwed on is screwed between hole and passes through spiral shell
Line is screwed with the first leading screw, and first leading screw extends to the right hand external of second fixed seat, the right side of first leading screw
The square structure in side end, the moving block include turn for rotating block main body and being welded in the moving block body side
Seat, the rotation block main body are cylindrical structure, and the swivel base is also cylindrical structure, and the diameter of the swivel base is more than described turn
The diameter of motion block main body, the rotation block main body with the swivel base is concentric connect, the side of the rotation block main body is recessed with just
Square groove, the fast main body of rotation are plugged in the right hand external of first leading screw.
Further, the quantity of the button fixed seat is two, and the button fixed seat is rectangle structure, the knob
The intermediate position of button fixing seat is equipped with the 7th and is screwed on hole, the screw thread that is recessed with for the hole inside spin that is screwed in the described 7th, and described
Seven be screwed on hole and first leading screws are adapted;The surface of the button fixed seat is also recessed with several first circular grooves, institute
The inner wall for stating the first circular groove is thread-like structure, is screwed with fixed block at first circular groove, the fixed block is
The bottom of cylindrical structure, the fixed block is protruding with screw rod, and the screw rod is rotatably connected in first circular groove, described solid
The top for determining block is also recessed with annular groove, and button is embedded in the annular groove.
The advantage of the invention is that:
Button is positioned at the annular groove of fixed block by the present invention, by rotating moving block button is located under drill bit
Next end controls driving motor and drill bit is made to start to rotate, then controls telescopic cylinder and drill bit is declined to be bored
Hole works;Mounting base rotation can make drill bit make the movement of circumferencial direction using operating main body as the center of circle, at button fixed seat
Several first circular grooves opened up, can be screwed on several button fixed seats at several first circular grooves, button fixed seat
On can the be screwed on fixed block of different size be adjusted so as to carry out the punching of different size button on single equipment
Property greatly enhance, be conducive to improve production efficiency.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of multistation button perforating device proposed by the present invention.
Fig. 2 is the vertical view of luggage carrier.
Number and the corresponding component title represented by letter in figure:
Wherein:1- pedestals;2- supporting racks;3- operates beam;4- punching units;5- luggage carriers;6- mounting bases;7- stretches gas
Cylinder;41- motor mounts;42- driving motors;43- drill bits;51- pedestals;52- mounting discs;The first fixed seats of 53-;54- second
Fixed seat;The first leading screws of 55-;56- moving blocks;57- button fixed seats;58- fixed blocks.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Diagram and specific embodiment are closed, the present invention is further explained.
As depicted in figs. 1 and 2, a kind of multistation button perforating device proposed by the present invention, including pedestal 1 and be connected in
Supporting rack 2 on the left of 1 upper end of the pedestal further includes being slideably positioned in operation beam 3 at support frame as described above 2, being revolved by screw thread
It is connected to the punching unit 4 of the end of the operation beam 3 and is welded on the right side of the upper end of the pedestal 1 and is located at the punching portion
The luggage carrier 5 of the lower end of part 4;Support frame as described above 2 is cylindric, and the top of support frame as described above 2 is recessed with the first round dimple, institute
The inner wall for stating the first round dimple is thread-like structure;
The operation beam 3 includes operating main body and the rocking arm being welded on the right side of the operating main body, the operating main body
For cylinder, it is equipped with the first circular through hole, first circular through hole and institute in the inner along the axial direction of the operating main body
It states supporting rack 2 to be adapted, the left end of the rocking arm is equipped with first and is screwed on hole, and the described first inner wall for being screwed on hole is screw thread
Shape structure;The top of support frame as described above 2 is further fixed on mounting base 6, and the mounting base 6 is including mounting base main body and is welded in institute
The mounting plate of mounting base body side is stated, the mounting base main body is cylindrical structure, and the outer wall of the mounting base main body is spiral shell
Striated structure, the mounting base main body are rotatably connected in by screw thread at the described first round dimple, the intermediate position of the mounting plate
It is equipped with the second circular through hole, the upper end of the mounting plate has been fastened by bolts telescopic cylinder 7, the work of the telescopic cylinder 7
Stopper rod passes through the second circular through hole and extends to the lower end of the mounting plate, the piston-rod end of the telescopic cylinder 7 with it is described
First hole that is screwed on is screwed on;
The quantity of the punching unit 4 is two, and the punching unit 4 includes motor mount 41, is fastened by bolts
Driving motor 42 in the lower end of the motor mount 41 and the brill that is connected with the output shaft end of the driving motor 42
First 43;
The luggage carrier 5 include pedestal 51, be welded in the pedestal 51 upper end mounting disc 52, be welded in the installation
The first fixed seat 53 on the left of the upper end of disk 52, passes through the second fixed seat 54 being welded on the right side of the upper end of the mounting disc 52
Screw thread is rotatably connected in the first leading screw 55 between first fixed seat 53 and second fixed seat 54, is sheathed on described first
The moving block 56 of the right-hand end of thick stick 55 and be rotatably connected in by screw thread first leading screw 55 outside button fixed seat 57.
Further, the rocking arm is rectangular parallelepiped structure, and rocking arm right-hand end lower surface is also recessed round there are two second
The inner wall of dimple, the described second round dimple is thread-like structure;The motor mount 41 is "convex" shaped structure, the electricity
The top of machine mounting base 41 is cylindrical structure, and the external wall of upper portion of the motor mount 41 is thread-like structure, the motor
The top of mounting base 41 is rotatably connected in by screw thread in the described second round dimple, position among the bottom of the motor mount 41
Also it is recessed with the first buckling groove, the both sides of first buckling groove are equipped with second and are screwed on hole, and described second is screwed on the interior of hole
Wall is thread-like structure.
Further, the top both sides of the driving motor 42 are both provided with connection sheet, and the connection sheet is " L " shape knot
Structure is equipped with the third hole and the 4th that is screwed at the connection sheet and is screwed on hole respectively, and the third hole that is screwed on is screwed on the described 4th
The inner wall in hole is thread-like structure, and the first bolt is screwed on across third and hole and connection sheet is anchored on the driving motor 42
Place, the second bolt are screwed on across the 4th and hole and connection sheet is anchored on to described second is screwed at hole, the driving motor 42
Top is connected in first buckling groove.
Further, the mounting disc 52 is discoid, and first fixed seat 53 has with second fixed seat 54
Identical structure, first fixed seat 53 is symmetrically disposed on the both sides of the mounting disc 52 with second fixed seat 54, described
The intermediate position of first fixed seat 53 is equipped with the 5th and is screwed on hole, and the intermediate position of second fixed seat 54 is equipped with the 6th rotation
Connect hole, the described 5th hole that is screwed on the described 6th inner wall for being screwed on hole is shape of threads, and the described 5th is screwed on hole and the described 6th
It is screwed between hole and the first leading screw 55 is screwed with by screw thread, first leading screw 55 extends to the right side of second fixed seat 54
Outside, the square structure of right-hand end of first leading screw 55, the moving block 56 include rotation block main body and welding
In the swivel base of the moving block body side, the rotation block main body is cylindrical structure, and the swivel base is also cylindrical structure,
The diameter of the swivel base is more than the diameter of the rotation block main body, the rotation block main body with the swivel base is concentric connect, it is described
The side of rotation block main body is recessed with square indentations, and the fast main body of rotation is plugged in outside the right side of first leading screw 55
Portion.
Further, the quantity of the button fixed seat 57 is two, and the button fixed seat 57 is rectangle structure, institute
The intermediate position for stating button fixed seat 57 is equipped with the 7th and is screwed on hole, the screw thread that is recessed with for the hole inside spin that is screwed in the described 7th,
Described 7th be screwed on hole and first leading screw 55 is adapted;The surface of the button fixed seat 57 is also recessed with several first circles
The inner wall of connected in star, first circular groove is thread-like structure, and fixed block 58, institute are screwed at first circular groove
It is cylindrical structure to state fixed block 58, and the bottom of the fixed block 58 is protruding with screw rod, and the screw rod is rotatably connected in first circle
In connected in star, the top of the fixed block 58 is also recessed with annular groove, and button is embedded in the annular groove.
Operation principle of the present invention:Button is positioned at the annular groove of fixed block by the present invention, is made by rotating moving block
Button is located at the lower end of drill bit, next controls driving motor and drill bit is made to start to rotate, and then controls telescopic cylinder and to bore
Head declines to carry out boring work.
Fixed block set by the present invention can be replaced according to the specification size of button, improve the adaptation of the present invention
Property so that the drilling of different size button is carried out on single equipment, controllability greatly enhances, and is conducive to improve production effect
Rate.
Wherein:First switch is installed, first switch is stretched out or contracted for controlling telescopic cylinder at telescopic cylinder
Tightly, first switch is connected by circuit with 220v power supplys;Driving motor is connected by circuit with 220V power supplys.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (5)
1. a kind of multistation button perforating device, including pedestal (1) and the supporting rack that is connected on the left of the pedestal (1) upper end
(2), it is characterised in that:Further include be slideably positioned in operation beam (3) at support frame as described above (2), be rotatably connected in by screw thread it is described
It operates the punching unit (4) of the end of beam (3) and is welded on the right side of the upper end of the pedestal (1) and is located at the punching unit
(4) luggage carrier (5) of lower end;Support frame as described above (2) is cylindric, and the first circle is recessed at the top of support frame as described above (2)
The inner wall of dimple, the described first round dimple is thread-like structure;
The rocking arm that the operation beam (3) includes operating main body and is welded on the right side of the operating main body, the operating main body are
Cylinder is equipped with the first circular through hole in the inner along the axial direction of the operating main body, first circular through hole with it is described
Supporting rack (2) is adapted, and the left end of the rocking arm is equipped with first and is screwed on hole, and the described first inner wall for being screwed on hole is screw thread
Shape structure;Mounting base (6) is further fixed at the top of support frame as described above (2), the mounting base (6) includes mounting base main body and weldering
Be connected to the mounting plate of the mounting base body side, the mounting base main body is cylindrical structure, the mounting base main body it is outer
Wall is thread-like structure, and the mounting base main body is rotatably connected in by screw thread at the described first round dimple, in the mounting plate
Between position be equipped with the second circular through hole, the upper end of the mounting plate has been fastened by bolts telescopic cylinder (7), the flexible gas
The piston rod of cylinder (7) passes through the second circular through hole and extends to the lower end of the mounting plate, the piston rod of the telescopic cylinder (7)
End is screwed on described first hole that is screwed on;
The quantity of the punching unit (4) is two, and the punching unit (4) includes motor mount (41), tight by bolt
It is fixed in the driving motor (42) of the lower end of the motor mount (41) and the output shaft end phase with the driving motor (42)
The drill bit (43) of connection;
The luggage carrier (5) includes pedestal (51), be welded in the pedestal (51) upper end mounting disc (52), be welded in it is described
The first fixed seat (53) on the left of the upper end of mounting disc (52), second be welded on the right side of the upper end of the mounting disc (52) are fixed
Seat (54) is rotatably connected in the first leading screw between first fixed seat (53) and second fixed seat (54) by screw thread
(55), it is sheathed on the moving block (56) of the right-hand end of first leading screw (55) and is rotatably connected in described first by screw thread
The button fixed seat (57) of the outside of thick stick (55).
2. a kind of multistation button perforating device according to claim 1, it is characterised in that:The rocking arm is cuboid knot
Structure, rocking arm right-hand end lower surface is also recessed, and there are two the second round dimples, and the inner wall of the described second round dimple is shape of threads
Structure;The motor mount (41) is "convex" shaped structure, and the top of the motor mount (41) is cylindrical structure, institute
The external wall of upper portion for stating motor mount (41) is thread-like structure, and the top of the motor mount (41) is rotatably connected in by screw thread
In the second round dimple, position is also recessed with the first buckling groove among the bottom of the motor mount (41), and described the
The both sides of one buckling groove are equipped with second and are screwed on hole, and the described second inner wall for being screwed on hole is thread-like structure.
3. a kind of multistation button perforating device according to claim 2, it is characterised in that:The driving motor (42)
Top both sides are both provided with connection sheet, and the connection sheet is " L " shape structure, are equipped with third at the connection sheet respectively and are screwed on hole
It is screwed on hole with the 4th, the third hole that is screwed on the described 4th inner wall for being screwed on hole is thread-like structure, and the first bolt passes through
Third, which is screwed on, hole and to be anchored on connection sheet at the driving motor (42), and the second bolt is screwed on hole and will be even across the 4th
Contact pin is anchored on described second and is screwed at hole, is connected in first buckling groove at the top of the driving motor (42).
4. a kind of multistation button perforating device according to claim 1, it is characterised in that:The mounting disc (52) is circle
Plate-like, first fixed seat (53) and second fixed seat (54) have an identical structure, first fixed seat (53) with
Second fixed seat (54) is symmetrically disposed on the both sides of the mounting disc (52), the intermediate position of first fixed seat (53)
It is equipped with the 5th to be screwed on hole, the intermediate position of second fixed seat (54) is equipped with the 6th and is screwed on hole, and the described 5th is screwed on hole
The inner wall for being screwed on hole with the described 6th is shape of threads, and the described 5th hole and the described 6th that is screwed on is screwed between hole and is revolved by screw thread
It is connected to the first leading screw (55), first leading screw (55) extends to the right hand external of second fixed seat (54), and described first
The square structure of right-hand end of leading screw (55), the moving block (56) is including rotation block main body and is welded in the rotation
The swivel base of block main body side, the rotation block main body are cylindrical structure, and the swivel base is also cylindrical structure, the swivel base
Diameter is more than the diameter of the rotation block main body, the rotation block main body with the swivel base is concentric connect, the rotation block main body
Side be recessed with square indentations, the fast main body of rotation is plugged in the right hand external of first leading screw (55).
5. a kind of multistation button processing unit (plant) according to claim 1, it is characterised in that:The button fixed seat (57)
Quantity be two, the button fixed seat (57) be rectangle structure, the intermediate position of the button fixed seat (57) is worn
There is the 7th to be screwed on hole, the screw thread that is recessed with for the hole inside spin that is screwed in the described 7th, the described 7th is screwed on hole and first leading screw
(55) it is adapted;The surface of the button fixed seat (57) is also recessed with several first circular grooves, first circular groove
Inner wall be thread-like structure, fixed block (58) is screwed at first circular groove, the fixed block (58) is cylinder
The bottom of structure, the fixed block (58) is protruding with screw rod, and the screw rod is rotatably connected in first circular groove, the fixation
The top of block (58) is also recessed with annular groove, and button is embedded in the annular groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810489043.9A CN108746712A (en) | 2018-05-21 | 2018-05-21 | A kind of multistation button perforating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810489043.9A CN108746712A (en) | 2018-05-21 | 2018-05-21 | A kind of multistation button perforating device |
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CN108746712A true CN108746712A (en) | 2018-11-06 |
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CN201810489043.9A Pending CN108746712A (en) | 2018-05-21 | 2018-05-21 | A kind of multistation button perforating device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110711877A (en) * | 2019-11-07 | 2020-01-21 | 邵阳博瑞钟表制造有限公司 | Numerical control drilling machine for clock production |
-
2018
- 2018-05-21 CN CN201810489043.9A patent/CN108746712A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110711877A (en) * | 2019-11-07 | 2020-01-21 | 邵阳博瑞钟表制造有限公司 | Numerical control drilling machine for clock production |
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Application publication date: 20181106 |