CN103934479A - Electric main shaft for circuit board - Google Patents
Electric main shaft for circuit board Download PDFInfo
- Publication number
- CN103934479A CN103934479A CN201410140956.1A CN201410140956A CN103934479A CN 103934479 A CN103934479 A CN 103934479A CN 201410140956 A CN201410140956 A CN 201410140956A CN 103934479 A CN103934479 A CN 103934479A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- chuck
- circuit board
- electric main
- pull bar
- 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
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- 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
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
Abstract
The invention discloses an electric main shaft for a circuit board. The electric main shaft comprises a motor, a cutter replacing device, a snap ring, a disc spring, a pull rod and a chuck. A center shaft of the motor is a hollow pipe, the head of the center shaft is provided with a conical hole for the chuck to be installed, the pull rod is arranged in the center shaft, one end of the pull rod is connected with the chuck, the other end of the pull rod is connected with the disc spring through the snap ring to tension a cutter, and the cutter replacing device is arranged above the motor and used for clamping the cutter. When a coil of the cutter replacing device is powered on, an ejector rod pushes the pull rod to move downwards, the cutter can be replaced in the manner that the chuck stretches out, and after cutter replacing, the first coil is powered off, the ejector rod loosens, and the cutter is tensioned through the disc spring. One end of the pull rod is connected with the chuck through a thread. Compared with a pneumatic cutter replacing device, the electric main shaft has the advantages that the size is small, an external air source is not needed, and the electric main shaft is suitable for circuit board machining, mini-type numerical control milling machines and other small numerical control systems.
Description
Technical field
The present invention relates to circuit board manufacture field, specifically, relate to a kind of circuit board machining of electric main shaft.
Background technology
Printed circuit board (pcb) is taking insulation board as base material, be covered with at substrate surface the Copper Foil that one deck is thin, and by the mode of chemical attack or Carving Machining, part Copper Foil is removed, form conductive pattern, and cloth porose (as component hole, fastener hole, plated through-hole etc.), be used for replacing the chassis of in the past installing electronic devices and components, and realize interconnecting between electronic devices and components.Current industrial board production is mainly used etch, and first printed circuit pattern on circuit board, then removes unwanted Copper Foil by chemical substance.Then use circuit board machining tool, on circuit board, hole.Except etch, also have a kind of small lot method for producing circuit board, i.e. engraving method, is exactly by milling cutter, unwanted Copper Foil to be removed.No matter be etch or engraving method, all need by circuit board machining tool, circuit board to be processed.Electricity main shaft is the core component of circuit board machining tool, and the performance such as speed, precision of electric main shaft directly has influence on precision and the efficiency of circuit boring or milling.Because circuit board machining tool is with respect to the lathe of Mechanical Processing Industry, volume is relatively little, therefore for the electric main shaft of Mechanical Processing Industry lathe and be not suitable for circuit board machining tool.Develop at present the electric main shaft of many moneys for circuit board processing both at home and abroad, for example patent CN200610124264.3 discloses a kind of air floated high speed electric mandrel, what its tool changing device used is Pneumatic tool-changing apparatus, need to use extra source of the gas just can carry out tool changing, use cylinder to be also unfavorable for dwindling the volume of electric main shaft simultaneously.In document " improvement of CNC milling machine Pneumatic tool-changing apparatus and maintenance ", mention Pneumatic tool-changing apparatus to occur unloading cutter slow in one's movements simultaneously, even there is the fault of " can not unload any more, do not fill ", main cause is that pipeline is repeatedly turned to cause and unloaded the knife back and press large and pressurized cylinder oil mass is on the low side causes, simultaneously in order to improve the speed of tool changing, use rapid escape valve, these all can increase the complexity of system undoubtedly.The sealing ring of cylinder is due to oil contamination, and easily the aging cylinder leakage tester that makes can cause tool changing power to decline.
Summary of the invention
The object of the invention is to solve that the tool changing of available circuit plate machining of electric main shaft need to assist that source of the gas, volume are large, complex structure and the aging exhaust hood of sealing ring leak gas the tool changing power decline problem causing, provide a kind of volume little, without the circuit board machining of electric main shaft of external source of the gas.
To achieve these goals, the present invention adopts following technical scheme:
A kind of circuit board machining of electric main shaft, comprise motor, tool changing device, snap ring, dish spring, pull bar and chuck, the inside of described motor is provided with pull bar, one end of pull bar is connected with chuck, be used for straining cutter, the other end of pull bar is connected with dish spring by snap ring, described tool changing device be located at motor above, for the clamping of cutter.
Described tool changing device comprises the first permanent magnet, the second coil, push rod, spring, end cap and the first housing, above described the first housing, be provided with end cap, below end cap, be provided with the first permanent magnet, the bottom of the first housing is provided with the first coil, spring is located between the first permanent magnet and the first coil, and described push rod is located at the inside of the first housing.After the first described coil electricity, produce magnetic force, interact with the first permanent magnet, tool changing power is provided.By changing electric current and the voltage of the first coil, can regulate the size of tool changing power.After the first coil electricity, instantaneous generation tool changing power, has improved tool-changing speed.
The inside of described motor is provided with upper bearing (metal) and lower bearing, and the both ends of motor are provided with respectively top bearing cover and lower bearing end cap, and upper bearing (metal) and lower bearing are arranged on the second housing by top bearing cover and lower bearing end cap respectively; The central shaft of described motor is hollow tube, and the end of hollow tube is bellmouth, is provided with chuck in bellmouth, and described pull bar is located at the inside of hollow tube; Described central shaft is provided with the second permanent magnet, and the second coil is located between upper bearing (metal) and lower bearing, and is fixed on the second housing.
One end that described pull bar is connected with chuck is provided with screw thread, and the other end of pull bar is provided with two annular grooves.
The number of described snap ring is two, and two snap rings are arranged on respectively on two annular grooves of pull bar, and described dish spring is arranged between two snap rings, and described disc spring pressing is at upper bearing (metal) inner ring top.
The end of described chuck is provided with the internal thread of cylinder lever connecting rod.
When main shaft work, the first coil losing electricity in tool changing device, spring action is in the first permanent magnet bottom, the first permanent magnet is moved upward, the first permanent magnet is threaded with push rod, thereby drive push rod to move upward, now push rod separates with dish spring, and dish spring in the main shaft course of work along with central shaft rotates together, under the effect of dish spring, pull bar pulls chuck extruding center axial cone shape hole wall, the chuck power clamp-on tool device that is squeezed, again because chuck and taper hole wall push generation frictional force mutually, under the effect of frictional force, chuck rotates with central shaft, the in the situation that of needs tool changing, first central shaft stops the rotation, the first coil obtains electric, the first coil produces the magnetic different with permanent magnet, the first coil in tool changing device obtains electric, and push rod moves downward under the effect of electromagnetic force, thereby promote the distortion of dish spring, pull bar is moved downward, and then chuck loosening cutter device, now can carry out tool changing by hand or by automatic tool changer.
Beneficial effect: the present invention is compared with Pneumatic tool-changing apparatus, its advantage be volume little, without external source of the gas, simple in structure, can change tool changing power and realize rapid changing knife, solved the tool changing power decline problem that the aging cylinder leakage tester causing of sealing ring causes simultaneously.The present invention is applicable to the miniature numerical control systems such as circuit board processing, Miniature numerical control milling machine.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of circuit board machining of electric main shaft of the present invention
Fig. 2 is the structural representation of chuck
In figure: 1. the first permanent magnet 2. push rod 3. first coil 4. snap ring 5. dish spring 6. second housing 7. second permanent magnet 8. second coil 9. pull bar 10. chuck 11. end cap 12. first housing 13. spring 14. tool changing device 15. top bearing cover 16. upper bearing (metal) 17. motor 18. central shaft 19. lower bearing 20. lower bearing end cap 21. internal threads.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
Embodiment
As shown in Figure 1, a kind of circuit board machining of electric main shaft, comprise motor 17, tool changing device 14, snap ring 4, dish spring 5, pull bar 9 and chuck 10, the inside of described motor 17 is provided with pull bar 9, one end of pull bar 9 is connected with chuck 10, and for straining cutter, the other end of pull bar 9 is connected with dish spring 5 by snap ring 4, described tool changing device 14 be located at motor 17 above, for the clamping of cutter.
Described tool changing device 14 comprises the first permanent magnet 1, the first coil 3, push rod 2, spring 13, end cap 11 and the first housing 12, above described the first housing 12, be provided with end cap 11, below end cap 11, be provided with the first permanent magnet 1, the bottom of the first housing 12 is provided with the first coil 3, spring 13 is located between the first permanent magnet 1 and the first coil 3, and described push rod 2 is located at the inside of the first housing 12.After the first described coil 3 energisings, produce magnetic force, interact with the first permanent magnet 1, tool changing power is provided.By changing electric current and the voltage of the first coil 3, can regulate the size of tool changing power.After the first coil 3 energisings, instantaneous generation tool changing power, has improved tool-changing speed.
The inside of described motor 17 is provided with upper bearing (metal) 16 and lower bearing 19, and the two ends of motor 17 are respectively equipped with top bearing cover 15 and lower bearing end cap 20, and upper bearing (metal) 16 and lower bearing 19 are arranged on the second housing 6 by top bearing cover 15 and lower bearing end cap 20 respectively; The central shaft 18 of described motor 17 is hollow tube, and the end of hollow tube is bellmouth, is provided with chuck 10 in bellmouth, and described pull bar 9 is located at the inside of hollow tube; Described central shaft 18 is provided with the second permanent magnet 7, the second coils 8 and is located between upper bearing (metal) 16 and lower bearing 19, and is fixed on the second housing 6.
Described pull bar 9 is provided with screw thread with one end that chuck 10 is connected, and the other end of pull bar 9 is provided with two annular grooves.
The number of described snap ring 4 is two, and two described snap rings 4 are arranged on respectively on two annular grooves of pull bar 9, and described dish spring 5 is arranged between two snap rings 4, and dish spring 5 is pressed on upper bearing (metal) 16 inner ring tops.
The end of described chuck 10 is provided with the internal thread 21 of cylinder lever connecting rod 9, as shown in Figure 2.
When main shaft work, the first coil 3 dead electricity in tool changing device 14, spring 13 acts on the first permanent magnet 1 bottom, the first permanent magnet 1 is moved upward, the first permanent magnet 1 is threaded with push rod 2, thereby drive push rod 2 to move upward, now push rod 2 separates with dish spring 5, and dish spring 5 in the main shaft course of work along with central shaft 18 rotates together, under the effect of dish spring 5, pull bar 9 pulls the taper hole wall of chuck 10 extruding center axles, the chuck 10 power clamp-on tool device that is squeezed, again because chuck 10 and taper hole wall push generation frictional force mutually, under the effect of frictional force, chuck 10 rotates with central shaft 18 and rotates, the in the situation that of needs tool changing, first central shaft 18 stops the rotation, the first coil 3 produces the magnetic different with the first permanent magnet 1, the first coil 3 in tool changing device 14 obtains electric, push rod 2 moves downward under the effect of electromagnetic force, thereby promote 5 distortion of dish spring, pull bar 9 is moved downward, and then chuck 10 loosening cutter devices, now can carry out tool changing by hand or by automatic tool changer.
Claims (7)
1. a circuit board machining of electric main shaft, it is characterized in that: comprise motor (17), tool changing device (14), snap ring (4), dish spring (5), pull bar (9) and chuck (10), the inside of described motor (17) is provided with pull bar (9), one end of pull bar (9) is connected with chuck (10), the other end of pull bar (9) is connected with dish spring (5) by snap ring (4), described tool changing device (14) be located at motor (17) above;
Described tool changing device (14) comprises the first permanent magnet (1), the first coil (3), push rod (2), spring (13), end cap (11) and the first housing (12), above described the first housing (12), be provided with end cap (11), below end cap (11), be provided with the first permanent magnet (1), the bottom of the first housing (12) is provided with the first coil (3), spring (13) is located between the first permanent magnet (1) and the first coil (3), and described push rod (2) is located at the inside of the first housing (12).
2. a kind of circuit board machining of electric main shaft according to claim 1, it is characterized in that: the inside of described motor (17) is provided with upper bearing (metal) (16) and lower bearing (19), the two ends of motor (17) are respectively equipped with top bearing cover (15) and lower bearing end cap (20), and upper bearing (metal) (16) and lower bearing (19) are arranged on the second housing (6) by top bearing cover (15) and lower bearing end cap (20) respectively;
The central shaft (18) of described motor (17) is hollow tube, and the end of hollow tube is bellmouth, is provided with chuck (10) in bellmouth, and described pull bar (9) is located at the inside of hollow tube;
Described central shaft (18) is provided with the second permanent magnet (7), and the second coil (8) is located between upper bearing (metal) (16) and lower bearing (19), and is fixed on the second housing (6).
3. a kind of circuit board machining of electric main shaft according to claim 1, is characterized in that: described pull bar (9) is provided with screw thread with one end that chuck (10) is connected, and the other end of pull bar (9) is provided with two annular grooves.
4. a kind of circuit board machining of electric main shaft according to claim 1, is characterized in that: the number of described snap ring (4) is two, described dish spring (5) is arranged between two snap rings.
5. a kind of circuit board machining of electric main shaft according to claim 1, is characterized in that: described dish spring (5) compresses upper bearing (metal) (16) inner ring top.
6. a kind of circuit board machining of electric main shaft according to claim 4, is characterized in that: described two snap rings (4) are arranged on respectively on two annular grooves of pull bar (9).
7. a kind of circuit board machining of electric main shaft according to claim 1, is characterized in that: the end of described chuck (10) is provided with the internal thread (21) of cylinder lever connecting rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140956.1A CN103934479A (en) | 2014-04-10 | 2014-04-10 | Electric main shaft for circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140956.1A CN103934479A (en) | 2014-04-10 | 2014-04-10 | Electric main shaft for circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103934479A true CN103934479A (en) | 2014-07-23 |
Family
ID=51182499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410140956.1A Pending CN103934479A (en) | 2014-04-10 | 2014-04-10 | Electric main shaft for circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103934479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735334A (en) * | 2017-01-18 | 2017-05-31 | 深圳数马电子技术有限公司 | Electromagnet pine blade automatic tool changing electrical spindle |
| CN112872956A (en) * | 2021-03-12 | 2021-06-01 | 南京伶机宜动驱动技术有限公司 | Precise burr removing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437322A2 (en) * | 1990-01-08 | 1991-07-17 | Kabushiki Kaisha Mori Seiki Seisakusho | Spindle unit for a machine tool |
| WO2001060562A1 (en) * | 2000-02-17 | 2001-08-23 | Paul Müller Gmbh & Co. Kg | Spindle comprising a data storage element |
| CN2659602Y (en) * | 2003-11-24 | 2004-12-01 | 宁波韵升股份有限公司 | Adjusting precision holding mainshaft |
| CN201038044Y (en) * | 2007-03-21 | 2008-03-19 | 鞍山市宏源自动化工程有限公司 | Permanent-magnetic operating mechanism |
| CN201696538U (en) * | 2010-06-28 | 2011-01-05 | 南京师范大学 | Disc spring and automatic tool changing device for electric spindle |
| CN102626792A (en) * | 2012-04-20 | 2012-08-08 | 广州市昊志机电股份有限公司 | High-speed multifunctional ball electric spindle |
-
2014
- 2014-04-10 CN CN201410140956.1A patent/CN103934479A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437322A2 (en) * | 1990-01-08 | 1991-07-17 | Kabushiki Kaisha Mori Seiki Seisakusho | Spindle unit for a machine tool |
| WO2001060562A1 (en) * | 2000-02-17 | 2001-08-23 | Paul Müller Gmbh & Co. Kg | Spindle comprising a data storage element |
| CN2659602Y (en) * | 2003-11-24 | 2004-12-01 | 宁波韵升股份有限公司 | Adjusting precision holding mainshaft |
| CN201038044Y (en) * | 2007-03-21 | 2008-03-19 | 鞍山市宏源自动化工程有限公司 | Permanent-magnetic operating mechanism |
| CN201696538U (en) * | 2010-06-28 | 2011-01-05 | 南京师范大学 | Disc spring and automatic tool changing device for electric spindle |
| CN102626792A (en) * | 2012-04-20 | 2012-08-08 | 广州市昊志机电股份有限公司 | High-speed multifunctional ball electric spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735334A (en) * | 2017-01-18 | 2017-05-31 | 深圳数马电子技术有限公司 | Electromagnet pine blade automatic tool changing electrical spindle |
| CN112872956A (en) * | 2021-03-12 | 2021-06-01 | 南京伶机宜动驱动技术有限公司 | Precise burr removing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140723 |
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| WD01 | Invention patent application deemed withdrawn after publication |