CN104942632A - Workpiece clamping and returning device of numerical control machine tool - Google Patents
Workpiece clamping and returning device of numerical control machine tool Download PDFInfo
- Publication number
- CN104942632A CN104942632A CN201510400724.XA CN201510400724A CN104942632A CN 104942632 A CN104942632 A CN 104942632A CN 201510400724 A CN201510400724 A CN 201510400724A CN 104942632 A CN104942632 A CN 104942632A
- Authority
- CN
- China
- Prior art keywords
- push rod
- collet
- main shaft
- workpiece clamping
- returning device
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
Abstract
The invention discloses a workpiece clamping and returning device of a numerical control machine tool. The workpiece clamping and returning device comprises a spindle and a hydraulic cylinder, wherein a spring chuck push rod is arranged in the spindle; a spring chuck, a spring chuck push sleeve and a spindle nut are arranged at the front part of the spindle; the front end of the spring chuck push rod is propped against the spring chuck push sleeve; the hydraulic cylinder is mounted on a spindle box of the spindle; a bearing, a shift block and an adjustable belleville spring are arranged sequentially at the rear part of the spindle from front to back; the shift block is clamped and fixed with the tail part of the spring chuck push rod; a piston of the hydraulic cylinder is propped against the bearing. The workpiece clamping and returning device is simpler in structure, the spring chuck push rod and the spring chuck push sleeve are more convenient to operate, the probability of claw breaking in the structure in the prior art is low, the costs of parts are reduced, the structural reasonability is high, meanwhile, the device has both the clamping and automatic push rod loosening effects which cannot be realized by the conventional device, and faults of the device are reduced.
Description
Technical field
The present invention relates to machine tool component manufacturing technology field, particularly relate to a kind of Digit Control Machine Tool Workpiece clamping returning device.
Background technology
Existing Digit Control Machine Tool clamping device is mainly by movable claw pushing sleeve, the rotatable claw pushing sleeve overcoat on main shaft is arranged on coaxial bearing, what be arranged on the claw pushing sleeve other end is claw fixed mount and claw, and being arranged on main shaft, inner what directly contact with claw is collet push rod.Be illustrated in figure 3 the structural representation of Workpiece clamping device, first ready workpiece raw material are placed in main shaft during work, then compressed air is added to air inlet A, cylinder piston is driven to pull shift fork while movement backward, the other end of shift fork is made to go to stir claw pushing sleeve overcoat, claw pushing sleeve in claw pushing sleeve overcoat moves towards the direction of claw, by the slope driving claw on claw pushing sleeve head, make claw along the inclined-plane expansion on claw pushing sleeve, the other end of claw goes to stir collet push rod around claw fixing pin, collet push rod goes to promote collet pushing sleeve again, allow the inclined-plane of contact of incline plane collet of collet pushing sleeve, thus contraction spring chuck reaches the raw-material object of clamping work pieces.In use find, the other end of claw is stirred claw while collet push rod goes clamping and need be in stress for a long time, easily ruptures.After cylinder return, claw is in relaxation state, and because push rod is too little with main shaft High Rotation Speed gap, long-time processing parts causes the push rod of main shaft inside that the expansionary force of collet cannot be leaned on automatically to loosen workpiece, so can not play push rod self-return function.And the manufacture craft of claw fixed mount is too complicated, the secondary matched bearings in claw pushing sleeve overcoat belongs to high-speed bearing selling at exorbitant prices, complicated integral structure.
Summary of the invention
Object of the present invention is just to provide a kind of Digit Control Machine Tool Workpiece clamping returning device to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of Digit Control Machine Tool Workpiece clamping returning device, comprise main shaft and hydraulic cylinder, collet push rod is provided with in described main shaft, the front portion of described main shaft is provided with collet, collet pushing sleeve and shaft nut, the front end of described collet push rod is resisted against on described collet pushing sleeve, described hydraulic cylinder is arranged on the main spindle box of described main shaft, the rear portion of described main shaft is disposed with bearing from front to back, shifting block and adjustable dished spring, the afterbody of described shifting block and described collet push rod clamps fixing, the piston of described hydraulic cylinder is resisted against on described bearing.
Further, the rear sleeve of described main shaft has shifting block frame, and described shifting block is fixed by a pin on described shifting block frame.
Further, the rear end of described main shaft is provided with the adjusting nut for regulating described adjustable butterfly spring, and described adjusting nut is resisted against on described adjustable butterfly spring.
Further, the afterbody of described collet push rod is provided with draw-in groove, and described shifting block is fixedly connected with described collet push rod by being installed in described draw-in groove.
Beneficial effect of the present invention is:
Structure of the present invention is simpler, do not need to use air cylinder device, shift fork, shift fork base, claw, claw base and claw pushing sleeve, collet push rod and pushing sleeve is made to run more convenient, and not easily there is the phenomenon of jackcatch fracture in prior art structure, also reduce component costs, reasonable structure is high, and has clamping and the effect automatically loosened by push rod simultaneously, be the technique effect that existing apparatus can not reach, also reduce the fault of device.
Accompanying drawing explanation
Fig. 1 is the structural representation of Digit Control Machine Tool Workpiece clamping returning device of the present invention;
Fig. 2 is the partial enlargement structural representation at B place in Fig. 1;
Fig. 3 is the structural representation of Workpiece clamping device in prior art;
In figure: 1-collet push rod, 101-draw-in groove, 2-shifting block, 3-main shaft, 4-adjusting nut, 5-shifting block frame, 6-bearing, 7-piston, 8-hydraulic cylinder, the adjustable butterfly spring of 9-, 10-shaft nut, 11-collet, 12-collet pushing sleeve, 13-pin, 14-workpiece raw material, 15-cylinder, 16-cylinder piston, 17-shift fork, 18-shift fork base, 19-three-jaw pushing sleeve outer shroud, 20-claw pushing sleeve, 21-claw, 22-master jaw.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As depicted in figs. 1 and 2, the present invention includes main shaft 3 and hydraulic cylinder 8, collet push rod 1 is provided with in main shaft 3, the front portion of main shaft 3 is provided with collet 11, collet pushing sleeve 12 and shaft nut 10, the front end of collet push rod 1 is resisted against on collet pushing sleeve 12, hydraulic cylinder 8 is arranged on the main spindle box of main shaft 3, and the rear portion of main shaft 3 is disposed with bearing 6, shifting block 2 and adjustable dished spring 9 from front to back, and the piston 7 of hydraulic cylinder 8 is resisted against on bearing 6.
Due to main shaft 3 High Rotation Speed, vibration is produced in order to prevent High Rotation Speed, so collet push rod 1 is very little with the gap of main shaft 3 endoporus, due to the impact of cutting fluid in process, collet push rod 1 can not lean on the tension force of collet 11 automatically to return normally, the workpiece blank clamped by collet 11 is caused to loosen, so be provided with draw-in groove 101 at the afterbody of collet push rod 1, shifting block 2 is fixedly connected with collet push rod 1 by being installed in draw-in groove 101, thus allow collet push rod 1 rollback by force, collet 11 is opened automatically.
The rear sleeve of main shaft 3 has shifting block frame 5, and shifting block 2 is fixed on shifting block frame 5 by pin 13.
The rear end of main shaft 3 is provided with the adjusting nut 4 for regulating adjustable butterfly spring 9, and adjusting nut 4 is resisted against on adjustable butterfly spring 9, is changed the spring force of adjustable butterfly spring 9 by turn adjusting nut 4.
Digit Control Machine Tool Workpiece clamping returning device of the present invention, is promoted to form by hydraulic cylinder 8 and shifting block 2 mutually.Hydraulic piston 7 is by liquid station hydraulic drive, bearing 6 is promoted, adjustable dished spring 9 is compressed return by bearing 6 and shifting block 2 under acting on hydraulic drive piston 7, also collet push rod 1 and collet pushing sleeve 12 contact surface is separated simultaneously, thus conveniently gets collet 11.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included in protection scope of the present invention.
Claims (4)
1. a Digit Control Machine Tool Workpiece clamping returning device, comprise main shaft, collet push rod is provided with in described main shaft, the front portion of described main shaft is provided with collet, collet pushing sleeve and shaft nut, the front end of described collet push rod is resisted against on described collet pushing sleeve, it is characterized in that: also comprise hydraulic cylinder, described hydraulic cylinder is arranged on the main spindle box of described main shaft, the rear portion of described main shaft is disposed with bearing from front to back, shifting block and adjustable dished spring, the afterbody of described shifting block and described collet push rod clamps fixing, the piston of described hydraulic cylinder is resisted against on described bearing.
2. Digit Control Machine Tool Workpiece clamping returning device according to claim 1, it is characterized in that: the rear sleeve of described main shaft has shifting block frame, described shifting block is fixed by a pin on described shifting block frame.
3. Digit Control Machine Tool Workpiece clamping returning device according to claim 1, is characterized in that: the rear end of described main shaft is provided with the adjusting nut for regulating described adjustable butterfly spring, and described adjusting nut is resisted against on described adjustable butterfly spring.
4. Digit Control Machine Tool Workpiece clamping returning device according to claim 1, is characterized in that: the afterbody of described collet push rod is provided with draw-in groove, described shifting block is fixedly connected with described collet push rod by being installed in described draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400724.XA CN104942632A (en) | 2015-07-09 | 2015-07-09 | Workpiece clamping and returning device of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400724.XA CN104942632A (en) | 2015-07-09 | 2015-07-09 | Workpiece clamping and returning device of numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942632A true CN104942632A (en) | 2015-09-30 |
Family
ID=54157975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510400724.XA Pending CN104942632A (en) | 2015-07-09 | 2015-07-09 | Workpiece clamping and returning device of numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942632A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000246573A (en) * | 1999-03-02 | 2000-09-12 | Toshiba Mach Co Ltd | Clamp device for main spindle tool |
| CN2829948Y (en) * | 2005-10-25 | 2006-10-25 | 陈相周 | Automatic chucking device of lathe chuck |
| CN202271214U (en) * | 2011-09-22 | 2012-06-13 | 梁锦星 | Energy-saving clamping device for lathes |
| CN204725194U (en) * | 2015-07-09 | 2015-10-28 | 四川新蕾机床有限公司 | Digit Control Machine Tool Workpiece clamping returning device |
-
2015
- 2015-07-09 CN CN201510400724.XA patent/CN104942632A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000246573A (en) * | 1999-03-02 | 2000-09-12 | Toshiba Mach Co Ltd | Clamp device for main spindle tool |
| CN2829948Y (en) * | 2005-10-25 | 2006-10-25 | 陈相周 | Automatic chucking device of lathe chuck |
| CN202271214U (en) * | 2011-09-22 | 2012-06-13 | 梁锦星 | Energy-saving clamping device for lathes |
| CN204725194U (en) * | 2015-07-09 | 2015-10-28 | 四川新蕾机床有限公司 | Digit Control Machine Tool Workpiece clamping returning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150930 |