CN111331206B - Pneumatic in-mold tapping machine - Google Patents
Pneumatic in-mold tapping machine Download PDFInfo
- Publication number
- CN111331206B CN111331206B CN202010304942.4A CN202010304942A CN111331206B CN 111331206 B CN111331206 B CN 111331206B CN 202010304942 A CN202010304942 A CN 202010304942A CN 111331206 B CN111331206 B CN 111331206B
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- pneumatic
- tapping machine
- block
- driving gear
- screw tap
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
- B23G1/18—Machines with one working spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
Abstract
The invention relates to the technical field of tapping machines, and discloses a pneumatic in-mold tapping machine which is convenient to use and high in safety, and the pneumatic in-mold tapping machine comprises: a cylinder for generating an axial rotational force; the fixing ring is arranged at one end of the cylinder for outputting power, and square grooves which are symmetrically arranged are arranged on the fixing ring; the impact block is provided with a lug at one end and is embedded into the square groove through the lug, one end in the impact block is wing-shaped, and the other end is provided with an outer hexagonal connecting shaft; one end of the driving gear is matched and connected with one end of an outer hexagon of the connecting shaft, so that axial rotating force is applied to the driving gear through the impact block; a driven gear engaged with the driving gear; when tapping, through driving gear and driven gear cooperation to the tooth hole is attacked to the drive screw tap, if the screw tap receives the torsion too big, then the kicking block skids, and then cuts the kicking block output axial revolving force. By using the technical scheme, the traditional mechanical or servo driving mode can be changed, the installation is convenient, the cost is reduced, and the technology is a breakthrough.
Description
Technical Field
The invention relates to the technical field of tapping machines, in particular to a pneumatic in-mold tapping machine.
Background
The in-mold tapping machine achieves the purpose of thread forming by converting the up-and-down motion of the punch/die slide block into the spiral motion of the extrusion screw tap. In the prior art, a mechanical type or servo motor is generally adopted to drive a gear set to rotate so as to drive a screw tap to carry out tapping, and when the hole site is inaccurate or the deviation of the hole site is large in the using process, the in-mold tapping machine continuously outputs power, so that the tooth teeth of the gear are easily cracked or the screw tap is broken due to the fact that the gear bears excessive reverse force.
Therefore, how to avoid the damage of the gear and the tap caused by the excessive reverse force is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the technical problem that in the prior art, when the hole position is inaccurate or the deviation of the hole position is large, the tooth teeth of the gear are easy to crack due to the bearing of a reverse force or a screw tap is broken, and provides a pneumatic in-mold tapping machine which is convenient to use and high in safety.
The technical scheme adopted by the invention for solving the technical problems is as follows: a pneumatic die internal tapping machine is constructed, and the pneumatic die internal tapping machine is provided with:
the air cylinder is provided with an air inlet end at one end of the air inlet/exhaust pipe and is used for generating axial rotating force;
the fixing ring is arranged at one end of the cylinder for outputting power, and square grooves which are symmetrically arranged are formed in the fixing ring;
the impact block is provided with a convex block at one end and is embedded into the square groove through the convex block, wherein one end in the impact block is wing-shaped, and the other end is provided with an outer hexagonal connecting shaft;
one end of the driving gear is matched and connected with one end of an outer hexagon of the connecting shaft, so that the axial rotating force is applied to the driving gear through the impact block; and
a driven gear engaged with the drive gear;
when tapping, through the driving gear with driven gear cooperation to the tooth hole is attacked to the drive screw tap, if the screw tap receives the torsion too big, then the kicking block skids, and then cuts the kicking block output axial revolving force.
In some embodiments, the impact block is provided in a split arrangement, and one wing-shaped end of the connecting shaft is placed in the impact block.
In some embodiments, the driving gear and the driven gear are bevel gears and are formed as a hollow structure of a hexagon socket.
In some embodiments, a stop block comprises a tooth bar and a mouthpiece for mounting the tooth bar;
one end of the tooth rod is an inner hexagonal and the other end is an outer hexagonal,
one end of the inner hexagon of the tooth rod is connected with one end of the outer hexagon of the connecting shaft in a matching way;
one end of the outer hexagon of the tooth rod is connected with one end of the driving gear in a matching way;
the limiting block is used for limiting the stroke of the screw tap shaft.
In some embodiments, the periphery of one end of the tap shaft is provided with an outer hexagon, and an inner cavity for installing the tap is formed in one end of the tap shaft provided with the outer hexagon;
the other end of the screw tap shaft penetrates through the driven gear and extends into the sleeve, so that the screw tap shaft is provided with an outer hexagonal end and is connected with the driven gear in a matched mode.
In some embodiments, the tap is removably mounted within the tap shaft.
In some embodiments, the box body and the clamping seat are circular, wherein the box body and the clamping seat are hollow structures;
one end of the box body is provided with three positioning blocks which protrude outwards,
a clamping ring is formed on the inner side of the upper end of the clamping seat, a groove corresponding to the positioning block is formed in the clamping ring, and the box body is detachably mounted in the clamping seat through the matching mounting of the clamping ring and the positioning block.
In some embodiments, a square housing for mounting the drive gear and the driven gear;
the top of the square box body is provided with a round hole with internal thread, a through hole corresponding to the round hole of the square box body is arranged in the clamping seat, and the clamping seat is fixed on the square box body through a screw rod.
In some embodiments, a solenoid valve is used to control the direction of intake/exhaust of the cylinder.
The pneumatic die internal tapping machine comprises a cylinder, a fixing ring, an impact block, a driving gear and a driven gear, wherein the fixing ring is arranged at one end of the cylinder for outputting power, and square grooves which are symmetrically arranged are formed in the fixing ring; the impact block is provided with a lug at one end and is embedded into the square groove through the lug, one end in the impact block is wing-shaped, and the other end is provided with an outer hexagonal connecting shaft; when tapping, through driving gear and driven gear cooperation to the tooth is attacked to the bottom outlet to the drive screw tap, when the screw tap card was in the tooth downthehole, the kicking block skidded, and then cuts the kicking block output axial revolving force. Compared with the prior art, on one hand, when the screw tap is clamped in the tooth hole, the convex block of the impact block pops out of the square groove of the fixing ring, so that the connecting shaft loses axial rotating force, the tooth teeth of the gear are prevented from cracking or the screw tap is broken due to overlarge bearing reverse force, and the safety of the tapping machine is further improved; on the other hand, when the tap tapping meets the blind hole, the buffer spring on the small nut rebounds, and the tap can be effectively prevented from being broken.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a perspective view of an embodiment of a pneumatic in-mold tapping machine provided by the present invention;
FIG. 2 is a perspective view of another embodiment of a pneumatic in-mold tapping machine provided in accordance with the present invention;
FIG. 3a is an exploded view of an embodiment of the present invention providing a pneumatic in-mold tapping machine;
FIG. 3b is an exploded view of another embodiment of the present invention providing a pneumatic in-mold tapping machine;
FIG. 4a is a perspective view of one embodiment of the cylinder of the present invention;
FIG. 4b is a perspective view of an embodiment of the present invention providing an impact block, a limiting block, a driving gear and a driven gear;
FIG. 5 is an exploded view of an embodiment of the impact block, retaining ring and connecting shaft of the present invention;
FIG. 6 is an exploded view of one embodiment of the present invention providing a circular sleeve member.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 is a perspective view of an embodiment of a pneumatic die internal tapping machine provided by the present invention, fig. 2 is a perspective view of another embodiment of a pneumatic die internal tapping machine provided by the present invention, fig. 3a is an exploded view of an embodiment of a pneumatic die internal tapping machine provided by the present invention, fig. 3b is an exploded view of another embodiment of a pneumatic die internal tapping machine provided by the present invention, fig. 4a is a perspective view of an embodiment of a cylinder provided by the present invention, fig. 4b is a perspective view of an embodiment of an impact block, a limit block, a driving gear and a driven gear provided by the present invention, fig. 5 is an exploded view of an embodiment of an impact block, a fixing ring and a connecting shaft provided by the present invention, and fig. 6 is an exploded view of an embodiment of a sleeve member provided by the. As shown in fig. 1 to 6, in the first embodiment of the pneumatic die internal tapping machine of the present invention, the pneumatic die internal tapping machine 100 includes a cylinder 10, an impact part 20, a stopper 30, a gear 40, a screw shaft 50, a sleeve member 60, and a base 70.
Illustratively, the pneumatic die internal tapping machine 100 uses high-pressure air as power, when the high-pressure air is input into the motor of the cylinder 10, the motor shaft 101 is driven to rotate, an axial rotation force is generated and transmitted to the connecting shaft 203 of the impact portion 20 through the shaft 101, the axial rotation force is connected to the driving gear 401 through the connecting shaft 203, the driving gear 401 rotates, the driven gear 402 is driven to rotate, the driven gear 402 adds the axial rotation force to the tap shaft 50, and tapping is performed on a product to be tapped through the tap 501.
Specifically, an intake/exhaust port is provided at one end of the cylinder 10, the intake/exhaust pipe 80 is connected to the intake/exhaust port of the cylinder 10 via a solenoid valve (not shown), the direction of the axial rotation torque output from the cylinder 10 (i.e., normal rotation or reverse rotation) is changed by the solenoid valve (not shown) to control the direction of the intake/exhaust of the cylinder 10, and the axial rotation torque generated by the cylinder 10 is transmitted to the impact portion 20 via the rotating shaft 101.
The impact portion 20 includes a fixed block 201, a fixed ring 202, a connecting shaft 203, impact blocks (204a, 204b), and spacers (206a, 206 b).
The fixing block 201 is a hollow structure, two ends of the fixing block are circular openings, and the surface of the fixing block is provided with symmetrical openings.
One end of the fixing ring 202 is in a small circle shape and the other end is in a large circle shape. In which a hexagonal through hole is formed in the small circle, and symmetrically arranged square grooves 202a are formed on the outer side of the large circle.
The impact blocks (204a, 204b) can be provided in an integrated or split type and have a hollow structure. One end of each impact block (204a, 204b) is provided with a lug (205a, 205b) extending outwards.
Specifically, a washer 206a, a fixing ring 202, a connecting shaft 203, impact blocks (204a, 204b), and another washer 206b are sequentially installed in the fixing block 201 to constitute the impact portion 20.
More specifically, one side of the small circle of the fixing ring 202 is disposed at one end of the cylinder 10 outputting power, the motor shaft 101 in the cylinder 10 passes through the inner hexagon of the circular hole (which can be understood as the left side) at one side of the fixing block 201, and the axial rotation force generated by the cylinder 10 is applied to the fixing ring 202 through the motor shaft 101.
The fixing ring 202 is provided with symmetrically arranged square grooves 202 a.
Furthermore, the impact blocks (204a, 204b) are split, and a bump 205a is disposed at one end of the impact block 204a, and a bump 205b is disposed at one end of the impact block 204 b.
During installation, a lug 205a of an impact block 204a is embedded into a groove 202a of the fixing ring 202; a projection 205b of another impact block 204b is inserted into another square groove 202b (not shown) of the fixing ring 202.
One end of the connecting shaft 203 is a wing 203a, the other end is an outer hexagon 203b, and one end of the wing 203a of the connecting shaft 203 is installed in the impact blocks (204a, 204b), and the connecting shaft 203 is driven to rotate by the rotation of the impact blocks (204a, 204b), so as to transmit the rotation power to the driving gear 401.
One end of the driving gear 401 is connected with one end of the outer hexagon 203b of the connecting shaft 203 in a matching manner, so that axial rotating force is applied to the driving gear 401 through the impact blocks (204a, 204b) and the connecting shaft 203, the driving gear 401 rotates, and meanwhile, the axial rotating force can be transmitted to the driven gear 402 through the teeth.
The driven gear 402 is engaged with the drive gear 401.
The drive gear 401 and the driven gear 402 are both bevel gears, and have a hexagonal hollow structure.
During tapping, the driving gear 401 is matched with the driven gear 402 to drive the screw tap 501 to tap the tooth hole, when the torsion borne by the screw tap 501 is too large, the screw tap 501 is clamped in the tooth hole, and at the moment, the impact blocks (204a and 204b) slip to enable the connecting shaft 203 to lose axial rotating force.
Specifically, when the torque applied to the tap 501 is too large, a protrusion 205a of an impact block 204a pops out of a groove 202a of the fixing ring 202; a protrusion 205b of the other impact block 204b also pops up the other square groove 202b (not shown in the figure) of the fixing ring 202 at the same time, so that the connecting shaft 203 loses the axial rotating force, and further stops providing the axial rotating force to the driving gear 401, and the tap 501 stops tapping the tooth hole, thereby effectively solving the problem that the tooth of the driving gear 401 or the driven gear 402 is cracked or the tap 501 is broken due to the excessive reverse force, and further improving the safety of the tapping machine.
In some embodiments, in order to determine the stroke distance of the tap shaft 50, a limit block 30 may be provided at the power output end of the connection shaft 203, wherein the limit block 30 is used for limiting the stroke distance of the tap shaft 50 on the "Z" axis.
Specifically, the limiting block 30 includes a mouthpiece 301 and a tooth rod 302, wherein the mouthpiece 301 is a hollow cylinder, and the tooth rod 302 is detachably mounted in the mouthpiece 301.
One end of the threaded rod 302 is an inner hexagon 302a, and the other end is an outer hexagon 302 b.
One end of the inner hexagon of the toothed bar 302 is connected with one end of the outer hexagon of the connecting shaft 203 in a matching way, and one end of the outer hexagon of the toothed bar 302 is installed with the inner hexagon 401a of the driving gear 401 in a matching way.
The axial rotation force output by the connecting shaft 203 is applied to the driving gear 401 through the toothed rod 302, and further drives the driving gear 401 to rotate.
Floating pieces (not shown in the figure) capable of reciprocating are arranged on two sides of the limiting block 30, wherein the floating pieces are arranged on the opposite sides of the two sides of the limiting block 30. That is, when the motor shaft 101 rotates forward, the floating piece on one side of the limiting block 30 moves from one end to the other end, and the stroke distance is the deepest point of the tap 501 when tapping the tooth hole; when the controller (or the CNC controller) of the machine tool controls the screw tap 501 to exit the thread hole, that is, when the motor rotating shaft 101 rotates reversely, at this time, the floating piece on the other side of the limiting block 30 moves from one end to the other end, the screw tap shaft 50 moves upwards, and then the screw tap 501 is taken out of the thread hole to complete the work of one stroke, and the stroke of the screw tap shaft 50 can be limited by the limiting block 30.
In some embodiments, in order to improve the convenience of the tapping machine, the screw tap shaft 50 may be formed with an outer hexagonal shape at one end, and an inner cavity for installing the screw tap 501 may be formed in the end of the screw tap shaft 50 formed with the outer hexagonal shape.
Specifically, the other end of the screw shaft 50 passes through the driven gear 402 and extends into the sleeve, so that the end of the screw shaft 50 with an outer hexagonal shape is in fit connection with the driven gear 402.
The tap 501 is removably mounted within the internal cavity of the tap shaft 50 and the tap 501 is secured within the tap shaft 50 by a locking sleeve 502. When the screw tap 501 needs to be replaced, the locking sleeve 502 is extruded towards the inner cavity side of the screw tap 501, the screw tap 501 can be taken out, and replacement and use are convenient.
In some embodiments, in order to improve the convenience of disassembly, a positioning block 16a protruding outward and a clamping seat 601 may be provided on the bottom side of the circular box 16 (or the sleeve member 60). Wherein, a snap ring 601a matched with the positioning block 16a is arranged at the inner side of the upper end of the clamping seat 601.
Specifically, the box 16 and the card seat 601 are hollow structures, and three positioning blocks 16a protruding outwards are arranged at one end of the box 16. A snap ring 601a is formed at the inner side of the upper end of the snap seat 601, wherein a groove 601b corresponding to the positioning block 16a and a through hole 603c penetrating through the snap seat 601 are formed on the snap ring 601 a.
When the box body 16 is installed, the positioning block 16a of the box body 16 is embedded into the groove 601b of the clamping seat 601 and is turned leftwards or rightwards, so that the positioning block 16a is clamped in the clamping ring 602a of the clamping seat 601, and the box body 16 is detachably fixed in the clamping seat 601.
Of course, a small nut 602, a rectangular spring 603a, a clamping lug 603b and a spring 604 are also arranged in the box 16, and the installation sequence is as follows: (as shown in fig. 6), the small spring, the gasket and the clamping lug 603b are firstly placed in the concave part at the upper end of the box body 14, then the clamping seat 601 is fixed on the box body 14, then the rectangular spring 603a, the small nut 602 and the spring 604 are installed, and finally the box body 16 is clamped in the clamping seat 601.
In some embodiments, to improve the use effect of the tapping machine, a square housing 14 for mounting the driving gear 401 and the driven gear 402 may be provided.
Specifically, the square box 14 is used for placing the driving gear 401 and the driven gear 402, and a grease nipple is arranged on one side of the square box 14, so that grease can be injected into the gear, and the transmission effect of the gear is improved.
Further, a round hole corresponding to the internal thread of the clamping seat 601 is formed in the top of the square box 14, the round hole corresponds to the through hole 603c formed in the clamping seat 601, and the clamping seat 601 is fixed on the square box 14 through a screw rod during installation.
In some embodiments, in order to improve the tapping effect of the tapping machine, a solenoid valve (not shown) for controlling the air intake/exhaust of the air intake pipe 80 may be provided, and specifically, the solenoid valve is electrically connected to the CNC controller, and outputs a command signal through the CNC controller to control the conduction/reversing of the solenoid valve, and controls the air intake/exhaust direction of the air cylinder 10 through the solenoid valve to output the forward rotation or the reverse rotation power.
In some embodiments, a positioning base 70 may also be provided, wherein the square box 14 is secured to the positioning base 70 and may be mounted on a machine tool by the positioning base 70.
By using the technical scheme, the traditional mechanical or servo driving mode can be changed, the installation is convenient, the cost is reduced, and the technology is a breakthrough.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A pneumatic die internal tapping machine is characterized by comprising:
the air cylinder is provided with an air inlet end at one end of the air inlet/exhaust pipe and is used for generating axial rotating force;
the fixing ring is arranged at one end of the cylinder for outputting power, and square grooves which are symmetrically arranged are formed in the fixing ring;
the impact block is provided with a convex block at one end and is embedded into the square groove through the convex block;
one end of the connecting shaft is wing-shaped, and the other end of the connecting shaft is provided with an outer hexagon;
one end of the driving gear is matched and connected with one end of an outer hexagon of the connecting shaft, so that the axial rotating force is applied to the driving gear through the impact block; and
a driven gear engaged with the drive gear;
when tapping, through the driving gear with driven gear cooperation to the tooth hole is attacked to the drive screw tap, if the screw tap receives the torsion too big, then the kicking block skids, and then cuts the kicking block output axial revolving force.
2. A pneumatic in-mold tapping machine as claimed in claim 1,
the impact block is arranged in a split mode, and one wing-shaped end of the connecting shaft is placed in the impact block.
3. A pneumatic in-mold tapping machine as claimed in claim 1,
the driving gear and the driven gear are bevel gears and are formed into a hexagon socket hollow structure.
4. The pneumatic die internal tapping machine of claim 1, further comprising
The limiting block comprises a tooth rod and a tooth socket for mounting the tooth rod;
one end of the tooth rod is an inner hexagonal and the other end is an outer hexagonal,
one end of the inner hexagon of the tooth rod is connected with one end of the outer hexagon of the connecting shaft in a matching way;
the other end of the outer hexagon of the tooth rod is connected with one end of the driving gear in a matching way;
the limiting block is used for limiting the stroke of the screw tap shaft.
5. The pneumatic in-mold tapping machine as claimed in claim 4,
the periphery of one end of the screw tap shaft is provided with an outer hexagon, and an inner cavity for mounting the screw tap is formed in one end of the screw tap shaft provided with the outer hexagon;
the other end of the screw tap shaft penetrates through the driven gear and extends into the sleeve, so that the screw tap shaft is provided with an outer hexagonal end and is connected with the driven gear in a matched mode.
6. The pneumatic in-mold tapping machine as claimed in claim 5,
the tap is detachably mounted in the tap shaft.
7. The pneumatic in-mold tapping machine as claimed in claim 5, further comprising
The box body and the clamping seat are of hollow structures;
one end of the box body is provided with three positioning blocks which protrude outwards,
a clamping ring is formed on the inner side of the upper end of the clamping seat, a groove corresponding to the positioning block is formed in the clamping ring, and the box body is detachably mounted in the clamping seat through the matching mounting of the clamping ring and the positioning block.
8. The pneumatic in-mold tapping machine as claimed in claim 7, further comprising
The square box body is used for mounting the driving gear and the driven gear;
the top of the square box body is provided with a round hole with internal thread, a through hole corresponding to the round hole of the square box body is arranged in the clamping seat, and the clamping seat is fixed on the square box body through a screw rod.
9. The pneumatic in-mold tapping machine as claimed in any one of claims 1 to 4, further comprising
A solenoid valve for controlling the direction of intake/exhaust of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304942.4A CN111331206B (en) | 2020-04-17 | 2020-04-17 | Pneumatic in-mold tapping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304942.4A CN111331206B (en) | 2020-04-17 | 2020-04-17 | Pneumatic in-mold tapping machine |
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| Publication Number | Publication Date |
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| CN111331206A CN111331206A (en) | 2020-06-26 |
| CN111331206B true CN111331206B (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010304942.4A Active CN111331206B (en) | 2020-04-17 | 2020-04-17 | Pneumatic in-mold tapping machine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209318940U (en) * | 2019-01-02 | 2019-08-30 | 上海杰高精密模具有限公司 | A kind of Fast Modular tapping device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3466517B2 (en) * | 1998-10-22 | 2003-11-10 | 芳典 和田 | Tapping unit |
| CN201342534Y (en) * | 2008-09-27 | 2009-11-11 | 奕达造机有限公司 | Lateral tapping mechanism |
| CN204505133U (en) * | 2015-01-16 | 2015-07-29 | 大里兴业有限公司 | There is the pneumatic tool of two impact block impact group |
| CN204449518U (en) * | 2015-01-27 | 2015-07-08 | 廖朝元 | A kind of mould tapping machine with screw tap protection |
| CN204639353U (en) * | 2015-06-01 | 2015-09-16 | 东莞市森川机械工具有限公司 | A kind of anti-jamming mould tapping machine |
| CN204912961U (en) * | 2015-08-03 | 2015-12-30 | 亿和精密工业（苏州）有限公司 | Side direction tapping device |
| CN206936538U (en) * | 2017-06-16 | 2018-01-30 | 苏州米河自动化科技有限公司 | A kind of lateral tapper mechanism |
| CN210023993U (en) * | 2019-01-24 | 2020-02-07 | 东莞市增利自动化科技有限公司 | Tapping head in servo die |
-
2020
- 2020-04-17 CN CN202010304942.4A patent/CN111331206B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209318940U (en) * | 2019-01-02 | 2019-08-30 | 上海杰高精密模具有限公司 | A kind of Fast Modular tapping device |
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