CN114453621A - Portable steel plate punching machine and application thereof - Google Patents
Portable steel plate punching machine and application thereof Download PDFInfo
- Publication number
- CN114453621A CN114453621A CN202111610829.XA CN202111610829A CN114453621A CN 114453621 A CN114453621 A CN 114453621A CN 202111610829 A CN202111610829 A CN 202111610829A CN 114453621 A CN114453621 A CN 114453621A
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- drill bit
- steel plate
- annular support
- support plate
- drill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/001—Housing of the drill, e.g. handgrip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a portable steel plate perforating machine and application thereof, comprising a driving motor, wherein a power output shaft of the driving motor is rotationally connected with one end of a drill bit clamp, and the other end of the drill bit clamp is detachably connected with a drill bit; the drill bit clamp is movably provided with a shaft sleeve in the circumferential direction on one side close to the driving motor, a telescopic guide mechanism is detachably mounted on the shaft sleeve along the screwing direction of the drill bit, the end part of the telescopic guide mechanism is connected with an electromagnetic locking mechanism used for locking the punching position of a machined part, and the electromagnetic locking mechanism is of a hollow structure and used for the drill bit to come in and go out. The electromagnetic locking mechanism at the bottom of the hole punching can be firmly adsorbed on the surface of the steel plate, so that the problems of hole drilling deviation, insecurity and the like caused by slipping are avoided, and the size precision and the position precision of the hole punching are ensured; in addition, the perforating machine is convenient to carry and easy to operate, and is particularly suitable for field installation of raw foil all-in-one machine equipment.
Description
Technical Field
The invention belongs to the technical field of auxiliary tools for mechanical equipment installation, and particularly relates to a portable steel plate perforating machine which is particularly suitable for field installation of a raw foil all-in-one machine.
Background
In the installation process of the foil generation all-in-one machine, the phenomenon that a rack transported to an installation site is lack of cable wiring holes exists, and the phenomenon that installation hole diameters of some non-standard mechanical parts are not matched with those of standard parts and non-standard parts exists, so that the rack and other parts are required to be punched or reamed in an equipment installation site, and the rack and other parts are basically made of steel plates with certain thicknesses (4-12 mm).
As is known, common punching equipment for steel plates is of a fixed structure and is not easy to temporarily process on site, so that the existing punching equipment commonly used on the site for installing the raw foil all-in-one machine mainly comprises an electric hand drill and an angle grinder, but both the two types of equipment have great use limitations, for example, the electric hand drill is difficult to process parts with high hardness, and the electric hand drill is easy to slip particularly when punching is carried out on an inclined surface or a vertical surface, so that the size precision and the position precision of punching are difficult to ensure; in addition, the angle grinder is often used for cutting non-metal plates and stainless steel plates with the thickness of less than 1mm, and the cutting of steel plates with large thickness and high hardness is time-consuming and labor-consuming.
In view of the above, the present inventors propose a portable steel plate punching machine and applications thereof to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a portable steel plate punching machine and application thereof to solve the problems that the position of the existing punching and cutting tool deviates greatly from the designed position after punching holes on an inclined plane and a vertical plane, the notch is not attractive, the working efficiency is low, and especially the manual electric drill or an angle grinder slips easily in the working process to cause personal safety.
The purpose of the invention is solved by the following technical scheme:
a portable steel plate punching machine comprises a driving motor, wherein a power output shaft of the driving motor is rotatably connected with one end of a drill bit clamp, and the other end of the drill bit clamp is detachably connected with a drill bit;
the drill bit clamp is provided with a shaft sleeve in a circumferential direction close to one side of the driving motor, a telescopic guide mechanism is detachably mounted on the shaft sleeve and along the screwing direction of the drill bit, the end part of the telescopic guide mechanism is connected with an electromagnetic locking mechanism used for locking the punching position of a workpiece, and the electromagnetic locking mechanism is of a hollow structure and used for allowing the drill bit to come in and go out.
Further, the telescopic guide mechanism, the electromagnetic locking mechanism and the drill bit are coaxially arranged.
Further, the electromagnetic locking mechanism comprises a hollow electromagnetic core and an electromagnetic coil, and the electromagnetic coil is wound on the circumferential surface of the electromagnetic core;
and any end of the electromagnetic coil is connected with an electromagnetic control switch, and the electromagnetic control switch is connected with a control switch of the driving motor in series and interlocked.
Furthermore, the telescopic guide mechanism comprises a first annular support plate and a second annular support plate which are coaxially arranged, a plurality of elastic telescopic units are annularly arranged between the first annular support plate and the second annular support plate around the axis, and the first annular support plate and the second annular support plate are connected through the plurality of elastic telescopic units;
the inner diameter of the first annular supporting plate is larger than the outer diameter of the drill bit clamp and smaller than the outer diameter of the shaft sleeve, the first annular supporting plate is connected to the end face of the shaft sleeve through a fastening piece, and the second annular supporting plate is fixedly connected with the electromagnet core.
Furthermore, the elastic telescopic unit comprises a sleeve fixed on the first annular supporting plate and a loop bar fixed on the second annular supporting plate, and the loop bar is in clearance fit with the sleeve;
the sleeve rod is circumferentially provided with a compression spring, the diameter of the compression spring is between the inner diameter and the outer diameter of the sleeve, and the sleeve is used for resisting the deformation of the compression spring.
Further, the sleeve outer wall is provided with logical groove along the axial, the tip of loop bar is connected with logical groove through spacing pin for prevent that the loop bar from breaking away from the sleeve.
Further, the drill bit includes the connecting rod, the one end and the drill bit of connecting rod press from both sides the joint, and other end fixedly connected with location bores, the peripheral coaxial tool bit that is provided with of location bores, on the location bore, be located the location and bore and be provided with row material spring between the tool bit.
Furthermore, at least two groups of first arc grooves are arranged at intervals along the circumferential surface of the drill chuck, second arc grooves corresponding to the first arc grooves are arranged on the inner wall of the shaft sleeve, and a plurality of balls are embedded in the first arc grooves and the second arc grooves.
Further, a handle is arranged at the top of the driving motor and used for conveniently applying acting force screwed along the drill bit and simultaneously facilitating carrying of the punching machine.
The application of the portable steel plate punching machine is suitable for field installation of raw foil all-in-one machine equipment, and the portable steel plate punching machine is mainly used for punching or reaming a rack or other parts of the raw foil all-in-one machine equipment.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention relates to a portable steel plate perforating machine, which is characterized in that a telescopic guide mechanism, an electromagnetic locking mechanism and a drill bit are coaxially arranged, therefore, when punching, only the center of the electromagnet core in the electromagnetic locking mechanism needs to be aligned with the center of the steel plate to be punched, then the switch is started, the end face of the electromagnet core can be firmly adsorbed on the surface of the steel plate, the axis of the punching machine is just vertical to the surface of the steel plate, finally, an operator only needs to apply acting force to the punching machine through a handle, the problem of drilling deviation caused by slipping in the prior art can be avoided, thereby ensuring the dimensional accuracy and the position accuracy of the steel plate drilling, the hole puncher is convenient to carry and move, is particularly suitable for field installation of raw foil all-in-one machine equipment, especially for punching or reaming inclined planes or vertical planes on a rack or other parts, and obviously improves the installation efficiency and the installation quality through practical verification.
2. The portable steel plate perforating machine is provided with the elastic telescopic guide mechanism, so that the feeding amount of a drill bit is relatively mild and stable when an operator applies acting force, the drilling bit is prevented from being damaged by violent feeding, and the drill bit can be quickly withdrawn through the elastic telescopic guide mechanism after a hole is drilled, and the processing efficiency is improved.
3. The invention relates to a portable steel plate perforating machine, wherein a drill bit of the perforating machine comprises a connecting rod, a cutter head made of alloy material and a protruding positioning drill, when an electromagnet core is not easy to position the center of a circle to be perforated, the center of the circle can be positioned through the protruding positioning drill, and after the position is determined, a switch is turned on to perform perforation or hole expansion; in addition, the drill bit is also provided with a discharging spring, so that scraps can be discharged in time in the drilling process, and the processing efficiency is further improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of a portable steel plate punch of the present invention;
FIG. 2 is a schematic view of the main view structure of the portable steel plate punching machine of the present invention
FIG. 3 is a cross-sectional structural view of the structure A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the configuration of the bit holder and bushing of the present invention;
FIG. 5 is a schematic view of the construction of the drill bit of the present invention;
FIG. 6 is a schematic structural view of the telescopic guide mechanism of the present invention;
fig. 7 is a schematic structural diagram of the electromagnetic locking mechanism of the invention.
Wherein: 1 is a driving motor; 2, a drill bit clamp; 3 is a drill bit; 4 is a shaft sleeve; 5 is a telescopic guide mechanism; 6 is an electromagnetic locking mechanism; 7 is a limit pin; 8 is a ball; 9 is a handle; 10 is a bond; 11 is a power output shaft; 21 is a first arc groove; 22 is a drill bit fixing nut; 23 is a drill bit bayonet; 31 is a connecting rod; 32 is a positioning drill; 33 is a cutter head; 34 is a discharge spring; 41 is a second arc groove; 51 is a first annular support plate; 52 is a second annular support plate; 53 is an elastic telescopic unit; 61 is an electromagnet core; 62 is an electromagnetic coil; 531 is a sleeve; 532 is a loop bar; 533 is a compression spring; 5311 it is a through groove.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
Referring to fig. 1-7, the invention provides a portable steel plate punching machine which is of a vertical structure integrally and comprises a driving motor 1, wherein a power output shaft 11 of the driving motor 1 is rotatably connected with one end of a drill clamp 2, and the other end of the drill clamp 2 is detachably connected with a drill 3.
The drilling machine comprises a driving motor 1, a drill bit clamp 2, a telescopic guide mechanism 5, an electromagnetic locking mechanism 6, a driving motor 1, a driving motor, a driving shaft and a driving shaft, wherein the shaft sleeve 4 is movably arranged on the circumferential direction of one side of the drill bit clamp 2 close to the driving motor 1, the telescopic guide mechanism 4 is detachably mounted on the shaft sleeve 4 along the screwing direction of a drill bit 3, the end part of the telescopic guide mechanism 5 is connected with the electromagnetic locking mechanism 6 used for locking the punching position of a workpiece, and the electromagnetic locking mechanism 6 is of a hollow structure and used for allowing the drill bit 3 to come in and go out; preferably, the telescopic guide mechanism 5, the electromagnetic locking mechanism 6 and the drill bit 3 are coaxially arranged. Through the above arrangement, after the drilling position is determined, the electromagnetic locking mechanism 6 is adsorbed on the surface of the processed steel plate through the magnetic attraction generated by the electromagnetism, at the moment, the end surface of the electromagnetic locking mechanism 6 is completely contacted with the surface of the steel plate, and in addition, the electromagnetic locking mechanism 6 and the drill bit 3 are coaxially arranged, so that the surface of the steel plate is perpendicular to the precession direction of the drill bit 3, and the size and the position accuracy of the drilling are ensured simultaneously under the condition of avoiding the slippage and the deviation of the drilling machine.
Specifically, as shown in fig. 3 and 4, the drill clamp 2 is connected with the power output shaft 11 through a key 10, the drill clamp 2 comprises a connecting shaft main body, an inner hole is formed in one end of the connecting shaft main body, a groove is formed in the hole wall of the inner hole, the connecting shaft main body is connected with the power output shaft 11 through the groove in a key mode and used for transmitting torque, a drill bayonet 23 used for mounting a drill 3 is arranged at the other end of the connecting shaft main body, and a drill fixing nut 22 is arranged on one side, close to the drill bayonet 23, of the connecting shaft main body in the circumferential direction, so that the drill 3 is locked on the drill clamp 2.
In addition, at least two groups of first arc grooves 21 are arranged at intervals along the circumferential surface of the drill clamp 2, second arc grooves 41 corresponding to the first arc grooves 21 are arranged on the inner wall of the shaft sleeve 4, and a plurality of balls 8 are embedded in the first arc grooves 21 and the second arc grooves 41; that is, the bit holder 2 and the sleeve 4 form a bearing-like structure, which ensures that the sleeve 4 is stationary when the driving motor 1 drives the bit holder 2 and the bit 3 to rotate.
As shown in fig. 5, the drill bit 3 of the present invention includes a connecting rod 31, one end of the connecting rod 31 is clamped with the drill bit bayonet 23 of the drill bit holder 2, the other end is fixedly connected with a positioning drill 32, a cutter head 33 is coaxially arranged on the periphery of the positioning drill 32, and the positioning drill 32 protrudes out of the cutter head 33, so that when the position of the circle center to be punched is not easy to be determined, the positioning drill 32 can be used for positioning, and after the position is determined, a switch is turned on to perform punching or hole expanding operation; preferably, the tool bit 33 can be adjusted and replaced correspondingly according to the size of the hole, the positioning drill 32 is provided with a discharging spring 34 between the positioning drill 32 and the tool bit 33, the tool bit 33 is provided with a chip removing hole, and through the matching of the discharging spring 34 and the chip removing hole, the iron chips are prevented from being blocked in the containing cavity between the positioning drill 32 and the tool bit 33 to interfere with the drilling operation.
As shown in fig. 6, the telescopic guide mechanism 5 of the present invention includes a first annular support plate 51 and a second annular support plate 52 which are coaxially disposed, and a plurality of elastic telescopic units 53 are annularly arranged between the first annular support plate 51 and the second annular support plate 52 around an axis, for example, four elastic telescopic units 53 are provided in the present embodiment, and central angles between adjacent elastic telescopic units are the same, and the first annular support plate 51 is connected with the second annular support plate 52 through the four elastic telescopic units 53; the inner diameter of the first annular support plate 51 is larger than the outer diameter of the connecting shaft of the main body of the drill chuck 2 and smaller than the outer diameter of the shaft sleeve 4, the first annular support plate 51 is connected to the end face of the shaft sleeve 4 through a fastening piece, and the second annular support plate 52 is fixedly connected with the electromagnetic locking mechanism 6. Of course, the first annular supporting plate 51 may also be directly detachably connected to the end surface of the bottom end of the housing of the driving motor 1, and the first annular supporting plate 51 is connected to the end surface of the bottom end of the housing of the driving motor 1 or the end surface of the shaft sleeve 4, so as to maximally utilize the acting force applied by the operator, thereby reducing the labor intensity of the operator in drilling.
The elastic telescopic unit 53 comprises a sleeve 531 fixed on the first annular support plate 51 and a sleeve rod 532 fixed on the second annular support plate 52, wherein the sleeve rod 532 is in clearance fit with the sleeve 531; the sleeve rod 532 is circumferentially provided with a compression spring 533, and the diameter of the compression spring 533 is between the inner diameter and the outer diameter of the sleeve 531, that is, when acting force is applied to the telescopic guide mechanism 5, the sleeve 531 is used for resisting the deformation of the compression spring 533. Through setting up elastic flexible guiding mechanism 5, when can guaranteeing that operating personnel applies the effort, the feed volume of drill bit 3 relatively more relaxes steadily, avoids the violent feed to damage trompil drill bit 3, and 3 drill bits have bored the hole after, can move back the sword rapidly through elastic flexible guiding mechanism 5 simultaneously, improve machining efficiency.
Preferably, in order to prevent the loop bar 532 from separating from the sleeve 531, the outer wall of the sleeve 531 is axially provided with a through groove 5311, the end of the loop bar 532 is connected with the through groove 5311 through a limit pin 7, and the loop bar 532 is sleeved in the sleeve 531 through the limit pin 7, so that the loop bar 532 can only do linear motion in the sleeve 531.
As shown in fig. 7, the electromagnetic locking mechanism 6 of the present invention includes a hollow electromagnet core 61 and an electromagnetic coil 62, wherein the electromagnetic coil 62 is wound around the circumference of the electromagnet core 61, the electromagnet core 61 is made of hollow steel pipe, in addition, any end of the electromagnetic coil 62 is connected with an electromagnetic control switch, the electromagnetic control switch is connected in series and interlocked with a control switch of the driving motor 1, that is, the driving motor 1 can be powered on to operate after the electromagnetic coil 62 is powered on, and the driving motor 1 cannot be started when the electromagnetic coil 62 is powered off, so as to ensure the processing safety.
Preferably, the invention also provides a handle 9 at the top of the driving motor, and the handle 9 is used for conveniently applying the force screwed along the drill bit 3 and simultaneously is convenient for carrying the punching machine.
In conclusion, the portable perforating machine is convenient to carry and easy to operate, and can ensure the dimensional accuracy and the position accuracy of perforating, so that the portable perforating machine is particularly suitable for field installation of the green foil all-in-one machine equipment, and mainly can be used for perforating or reaming the frame or other parts of the green foil all-in-one machine equipment.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The portable steel plate punching machine is characterized by comprising a driving motor (1), wherein a power output shaft (11) of the driving motor (1) is rotatably connected with one end of a drill bit clamp (2), and the other end of the drill bit clamp (2) is detachably connected with a drill bit (3);
the drilling tool comprises a driving motor (1), a drill bit clamp (2), a shaft sleeve (4) and a telescopic guide mechanism (5), wherein the shaft sleeve (4) is movably arranged in the circumferential direction close to one side of the driving motor (1), the telescopic guide mechanism (5) is detachably mounted on the shaft sleeve (4) along the screwing direction of a drill bit (3), the end part of the telescopic guide mechanism (5) is connected with an electromagnetic locking mechanism (6) used for locking the punching position of a workpiece, and the electromagnetic locking mechanism (6) is of a hollow structure and used for allowing the drill bit (3) to come in and go out.
2. A portable steel plate perforating machine as claimed in claim 1, characterized in that the telescopic guide (5), the electromagnetic locking mechanism (6) and the drill (3) are arranged coaxially.
3. A portable steel plate punch according to claim 2, wherein the electromagnetic locking mechanism (6) comprises a hollow electromagnet core (61) and an electromagnetic coil (62), the electromagnetic coil (62) being wound around the circumference of the electromagnet core (61).
And either end of the electromagnetic coil (62) is connected with an electromagnetic control switch, and the electromagnetic control switch is connected with a control switch of the driving motor (1) in series and interlocked.
4. The portable steel plate punching machine according to claim 3, wherein the telescopic guide mechanism (5) comprises a first annular support plate (51) and a second annular support plate (52) which are coaxially arranged, a plurality of elastic telescopic units (53) are annularly arranged between the first annular support plate (51) and the second annular support plate (52) around the axis, and the first annular support plate (51) is connected with the second annular support plate (52) through the plurality of elastic telescopic units (53);
the inner diameter of the first annular support plate (51) is larger than the outer diameter of the drill chuck (2) and smaller than the outer diameter of the shaft sleeve (4), the first annular support plate (51) is connected to the end face of the shaft sleeve (4) through a fastening piece, and the second annular support plate (52) is fixedly connected with the electromagnet core (61).
5. A portable steel plate punch as claimed in claim 4, wherein the elastic expansion unit (53) comprises a sleeve (531) fixed on the first annular support plate (51), and a bar (532) fixed on the second annular support plate (52), the bar (532) is in clearance fit with the sleeve (531);
the telescopic rod (532) is circumferentially provided with a compression spring (533), the diameter of the compression spring (533) is between the inner diameter and the outer diameter of the sleeve (531), and the sleeve (531) is used for resisting the deformation of the compression spring (533).
6. The portable steel plate punching machine according to claim 5, wherein the outer wall of the sleeve (531) is axially provided with a through groove (5311), and the end of the loop bar (532) is connected with the through groove (5311) through a limit pin (7) for preventing the loop bar (532) from being separated from the sleeve (531).
7. The portable steel plate punching machine according to claim 1, wherein the drill bit (3) comprises a connecting rod (31), one end of the connecting rod (31) is clamped with the drill bit clamp (2), the other end of the connecting rod is fixedly connected with a positioning drill (32), a cutter head (33) is coaxially arranged on the periphery of the positioning drill (32), and a discharging spring (34) is arranged on the positioning drill (32) and between the positioning drill (32) and the cutter head (33).
8. The portable steel plate punching machine according to claim 1, wherein the drill bit holder (2) is provided with at least two sets of first circular arc grooves (21) at intervals along the circumferential surface, the inner wall of the shaft sleeve (4) is provided with second circular arc grooves (41) corresponding to the first circular arc grooves (21), and a plurality of balls (8) are embedded in the first circular arc grooves (21) and the second circular arc grooves (41).
9. A portable steel plate punch according to claim 1 wherein a handle (9) is provided on top of the drive motor, said handle (9) being adapted to facilitate application of a force that precesses along the drill bit (3) while facilitating carrying of the punch.
10. The use of the portable steel plate punching machine according to any one of claims 1 to 9, wherein the punching machine is suitable for field installation of the green foil all-in-one machine, and is mainly used for punching or reaming a frame or other parts of the green foil all-in-one machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610829.XA CN114453621A (en) | 2021-12-27 | 2021-12-27 | Portable steel plate punching machine and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610829.XA CN114453621A (en) | 2021-12-27 | 2021-12-27 | Portable steel plate punching machine and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114453621A true CN114453621A (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111610829.XA Pending CN114453621A (en) | 2021-12-27 | 2021-12-27 | Portable steel plate punching machine and application thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114453621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532687A (en) * | 2023-06-01 | 2023-08-04 | 大昌汽车部件股份有限公司 | Hole forming device of master cylinder piston |
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| JPH07227708A (en) * | 1994-02-15 | 1995-08-29 | Matsushita Electric Works Ltd | Boring device and boring method using the same |
| JP2011177818A (en) * | 2010-02-26 | 2011-09-15 | Hitachi Koki Co Ltd | Magnetic drilling machine |
| CN102606097A (en) * | 2012-03-18 | 2012-07-25 | 陈科 | Electric drill dust cover |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532687A (en) * | 2023-06-01 | 2023-08-04 | 大昌汽车部件股份有限公司 | Hole forming device of master cylinder piston |
| CN116532687B (en) * | 2023-06-01 | 2023-10-27 | 大昌汽车部件股份有限公司 | Hole forming device of master cylinder piston |
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Address after: 710299 No. 15, west section of Xijin Road, Jingwei Industrial Park, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province Applicant after: Xi'an Taijin Xinneng Technology Co.,Ltd. Address before: 710299 No. 15, west section of Xijin Road, Jingwei Industrial Park, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province Applicant before: XI'AN TAIJIN INDUSTRIAL ELECTROCHEMICAL TECHNOLOGY Co.,Ltd. |