CN107486567A - A kind of piece-holder positioner - Google Patents
A kind of piece-holder positioner Download PDFInfo
- Publication number
- CN107486567A CN107486567A CN201710780947.2A CN201710780947A CN107486567A CN 107486567 A CN107486567 A CN 107486567A CN 201710780947 A CN201710780947 A CN 201710780947A CN 107486567 A CN107486567 A CN 107486567A
- Authority
- CN
- China
- Prior art keywords
- centring means
- collet
- drive mechanism
- piece
- clamping 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
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008685 targeting Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a kind of piece-holder positioner, including machine tool chief axis, piece-holder positioner includes drive mechanism and clamping device, in addition to centring means, one end of clamping device are fixedly connected with machine tool chief axis, and the clamping device is hollow structure；One end of centring means is stretched into hollow structure；The other end of centring means is stretched into one end of workpiece, the fixing end of drive mechanism is fixedly connected with machine tool chief axis, the movable end of drive mechanism drives centring means to be moved in hollow structure, and centring means is engaged with clamping device so that centring means is clamped or loosened to workpiece.Present invention employs special high precision elastic chuck, hydraulic locking, automatic clamping, self-centering, it is ensured that the voluntarily precision of centering, efficiency high, steady quality.
Description
Technical field
The present invention relates to mechanical processing technique technical field, more particularly to a kind of piece-holder positioner.
Background technology
At present, work holder of the prior art uses scroll chuck mostly, and the working method of scroll chuck is：Three
Below three claw guiding parts on dog chuck, there is screw thread and the flat thread at the dish-shaped bevel gear back side to be meshed, when with
When spanner rotates cone pinion by four square holes, dish-shaped pinion rotation, the flat thread at the back side drives three claws in simultaneously
The heart is close or exits, to clamp the workpiece of different-diameter.The voluntarily centering accuracy of scroll chuck is 0.05-0.15mm.With
The precision of scroll chuck workpieces processing is influenceed by the chuck accuracy of manufacture and using rear abrasion condition.Scroll chuck uses long
, as bell mouth shape occurs in the abrasion three-jaw of chuck, three-jaw also can slowly deviate lathe spindle center, make processed part
Form and position tolerance increase.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of piece-holder positioner, this hair
Bright purpose adopts the following technical scheme that realization：
A kind of piece-holder positioner, including machine tool chief axis, the piece-holder positioner include drive mechanism and
Clamping device, in addition to centring means, one end of the clamping device are fixedly connected with machine tool chief axis, and the clamping device is hollow
Structure；One end of the centring means is stretched into the hollow structure；The other end of centring means is stretched into one end of workpiece, described
The fixing end of drive mechanism is fixedly connected with machine tool chief axis, and the movable end of drive mechanism drives centring means to be transported in hollow structure
Dynamic, centring means is engaged with clamping device so that centring means is clamped or loosened to workpiece.
Further, the clamping device is clamping flange, and the other end port inner wall of the clamping flange is the conical surface.
Further, the centring means is collet, and the outside of the collet connects with clamping the inwall of flange
Touch, one end of collet and the other end of drive mechanism are rotatablely connected, and the other end of collet is offered not less than two
Groove position, the groove position extends along the axle of collet, card valve is formed between adjacent two grooves position, the outer wall of the card valve is cone
Face.
Further, the drive mechanism is rotating cylinder, and the rotating cylinder includes hydraulic pressure draw-bar, the one of the hydraulic pressure draw-bar
End is fixedly connected with the output shaft of rotating cylinder, and the hydraulic pressure draw-bar is connected through a screw thread with collet.
Further, the drive mechanism is electric pushrod, and the electric pushrod includes motor and push rod, the push rod
One end be fixedly connected with the output shaft of the motor, the push rod is threadedly coupled with collet.
Compared with prior art, the beneficial effects of the present invention are：The present invention uses special high precision elastic chuck, hydraulic lock
Tightly, automatic clamping, self-centering, it is ensured that the voluntarily precision of centering, efficiency high, steady quality.
Brief description of the drawings
Fig. 1 is the overall structure profile of the present invention；
Fig. 2 is the profile of clamping flange；
Fig. 3 is Fig. 2 side view；
Fig. 4 is the profile of collet；
Fig. 5 is Fig. 4 side view.
In figure：1st, machine tool chief axis；2nd, flange is clamped；3rd, collet；4th, workpiece；5th, hydraulic pressure draw-bar；6th, dop；7th, middle part
Elastic part；8th, targeting part；9th, card valve.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further, it is necessary to which explanation is, not
Under the premise of afoul, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
A kind of piece-holder positioner, including machine tool chief axis 1 and workpiece 4, as shown in figure 1, piece-holder positioner
Including drive mechanism and clamping device, clamping device is fixedly connected with machine tool chief axis 1 by screw, and clamping device is hollow knot
Structure；Also include centring means, one end of centring means is stretched into hollow structure, and the another of centring means is stretched into one end of workpiece 4
End；The fixing end of drive mechanism is fixedly connected on the machine tool chief axis 1, and the movable end of drive mechanism drives centring means in
Moved in hollow structure, centring means is engaged with clamping device so that centring means is clamped or loosened to workpiece 4.
Furthermore, drive mechanism is rotating cylinder, and the output shaft of rotating cylinder is fixedly connected with hydraulic pressure draw-bar 5, hydraulic pressure draw-bar 5
It is connected through a screw thread with the one end of collet 3, the rotation of the rotating band hydrodynamic pressure pull bar 5 of rotating cylinder, the bullet being threadedly coupled with it
Property chuck 3 realize it is flexible in clamping device.
The operation principle class of electric pushrod or triangle cylinder, electric pushrod or triangle cylinder further may be selected in drive mechanism
Seemingly, the output shaft of motor is fixed in one end of push rod, and collet 3 is threadedly coupled with the other end of push rod, passes through controller control
Motor processed rotates, and realizes the process of push-and-pull.
As shown in Figures 2 and 3, clamping device is clamping flange 2, and clamping flange 2 is fixedly connected on lathe master by screw
On the ring flange of axle 1；Centring means is collet 3, and the collet 3 is using a conical flexible sleeve as work
Element is simultaneously engaged with the inner side of clamping flange 2, is guided the self-centering of workpiece 4 using its elastic deformation and is stepped up；Meanwhile elasticity
The shapes and sizes of chuck 3 determine the construction of centring means and clamp the size of flange 2.
As shown in Figure 4 and Figure 5, collet 3 includes dop 6, middle part elastic part 7 and targeting part 8, targeting part 8
It is connected with hydraulic pressure draw-bar 5 by threads turn, the groundwork position of collet 3 is its dop 6, and dop 6 is by axially grooved
Card valve 9 is formed, card valve 9 is used for clamping workpiece 4, and the outer wall of card valve 9 is the conical surface, while clamps the other end port inner wall of flange 2
Also it is the conical surface, is engaged with the conical surface of card valve 9.Under the hydraulic pressure draw-bar driving of rotating cylinder, with its profit of collet 3 that is connected
Relative slip is done with the conical surface and clamping flange 2, so as to force collet 3 to produce elastic deformation, realizes the clamping to workpiece；Production
After product machine, realized by elastically-deformable restoring force and the pine of workpiece is pressed from both sides.The clamping face of collet 3, which is mounted in, to be set
Standby above to manufacture, concentricity is high, and less than 0.005mm, card valve 9 is opened up along the central axis of collet 3 into axial symmetry in addition, real
The centering of existing piece-holder.
Wherein, the fluting number of dop 6 is the elasticity that the quantity of card valve 9 and the length of dop 6 can influence collet 3
And intensity, so to select suitable collet 3 according to specific production requirement.
Furthermore, the groove of dop 6 is uniform, otherwise can because of 6 each position of dop clamping dynamics it is uneven and
Influence the precision of centering.
In addition, the cone angle size of card valve 9 also should according to production requirement come appropriate selection, the present invention use for interior drawing
The mode that formula clamps, vertebra angle typically select 40 °, and the setting of cone angle can make contact surface in clamping process become big, make clamping more
It is firm, and when unclamping, there is the ability unclamped automatically.
It is advantageous in that it will not injure the reference plane of workpiece 4 when clamping using collet 3 in the present invention, compared to
The scroll chuck of prior art, centering precision improve, and more reliable and more stable, when using material and preferable heat treatment mode,
Centering precision can be promoted to 0.02-0.05mm by original 0.05-0.15mm.
The specifically used method of the present invention is：First release collet 3 before processing, i.e. hydraulic pressure draw-bar 5 stretches out, and operator is by work
Part 4 is put into the collet 3 of release；The retraction of hydraulic pressure draw-bar 5 tightens up collet 3, and chuck aperture diminishes, and locks workpiece 4, work
Part 4 is machined out；After completing all process steps, then collet 3 is unclamped, take the workpiece 4 processed away and complete time processing.
Whole process is by controlling rotating cylinder to complete whole processing action.Further, since the diameter of the positioning hole of collet 3 is slightly smaller than
The diameter of workpiece 4, so elastic force and frictional force can be relied on to fix in off working state, pressed from both sides again when then being bounced back with hydraulic pressure draw-bar 5
Tightly.
Sum it up, prior art needs to tighten chuck manually to clamp workpiece 4, time length, people works hard, and the present invention is only
Click commands need to be used to complete the process for clamping or unclamping workpiece 4, use of the invention improves processing efficiency, reduced
Labor intensity；And hydraulic locking can be realized, automatic clamping, self-centering, it is ensured that the voluntarily precision of centering, efficiency high, matter
Amount is stable.
Above-mentioned embodiment is only the preferred embodiment of the present invention, it is impossible to the scope of protection of the invention is limited with this,
The change and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed scope.
Claims (5)
1. a kind of piece-holder positioner, including machine tool chief axis, the piece-holder positioner includes drive mechanism and folder
Hold device, it is characterised in that：Also include centring means, one end of the clamping device is fixedly connected with machine tool chief axis, the clamping
Device is hollow structure；One end of the centring means is stretched into the hollow structure；Centring means is stretched into one end of workpiece
The other end, the fixing end of the drive mechanism are fixedly connected with machine tool chief axis, and the movable end of drive mechanism drives centring means to exist
Moved in hollow structure, centring means is engaged with clamping device so that centring means is clamped or loosened to workpiece.
2. piece-holder positioner as claimed in claim 1, it is characterised in that：The clamping device is to clamp flange, institute
The other end port inner wall for stating clamping flange is the conical surface.
3. piece-holder positioner as claimed in claim 2, it is characterised in that：The centring means is collet, institute
The outside for stating collet is contacted with clamping the inwall of flange, and one end of collet and the other end of drive mechanism are rotated and connected
Connecing, the other end of collet offers the groove position not less than two, and the groove position extends along the axle of collet, and adjacent two
Card valve is formed between groove position, the outer wall of the card valve is the conical surface.
4. piece-holder positioner as claimed in claim 3, it is characterised in that：The drive mechanism is rotating cylinder, described
Rotating cylinder includes hydraulic pressure draw-bar, and one end of the hydraulic pressure draw-bar is fixedly connected with the output shaft of rotating cylinder, the hydraulic pressure draw-bar and bullet
Property chuck is connected through a screw thread.
5. piece-holder positioner as claimed in claim 3, it is characterised in that：The drive mechanism is electric pushrod, institute
Stating electric pushrod includes motor and push rod, and one end of the push rod is fixedly connected with the output shaft of the motor, the push rod
It is threadedly coupled with collet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780947.2A CN107486567A (en) | 2017-09-01 | 2017-09-01 | A kind of piece-holder positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780947.2A CN107486567A (en) | 2017-09-01 | 2017-09-01 | A kind of piece-holder positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107486567A true CN107486567A (en) | 2017-12-19 |
Family
ID=60651315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710780947.2A Pending CN107486567A (en) | 2017-09-01 | 2017-09-01 | A kind of piece-holder positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107486567A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876730B2 (en) * | 1990-07-06 | 1999-03-31 | アイシン精機株式会社 | Work holding device with axial positioning function |
| DE19912869A1 (en) * | 1999-03-22 | 2000-09-28 | Alfons Plereiter | Clamping device for lathe, with inner piece screwed to threaded rod and lugs radially movable to engage in slots of collet chuck |
| CN201405083Y (en) * | 2009-03-11 | 2010-02-17 | 济南玫德铸造有限公司 | Clamping device for steel tube processing |
| CN201848555U (en) * | 2010-11-17 | 2011-06-01 | 慈溪市飞达齿轮厂 | Spring collet |
| CN102335766A (en) * | 2011-09-22 | 2012-02-01 | 梁锦星 | Energy-saving clamping device of lathe |
| CN202845828U (en) * | 2012-06-29 | 2013-04-03 | 宜宾常达机械有限公司 | Clamping tool used for mushroom-shaped parts |
| CN204770771U (en) * | 2015-08-03 | 2015-11-18 | 台州市格特电机有限公司 | Motor shell face work anchor clamps |
-
2017
- 2017-09-01 CN CN201710780947.2A patent/CN107486567A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2876730B2 (en) * | 1990-07-06 | 1999-03-31 | アイシン精機株式会社 | Work holding device with axial positioning function |
| DE19912869A1 (en) * | 1999-03-22 | 2000-09-28 | Alfons Plereiter | Clamping device for lathe, with inner piece screwed to threaded rod and lugs radially movable to engage in slots of collet chuck |
| CN201405083Y (en) * | 2009-03-11 | 2010-02-17 | 济南玫德铸造有限公司 | Clamping device for steel tube processing |
| CN201848555U (en) * | 2010-11-17 | 2011-06-01 | 慈溪市飞达齿轮厂 | Spring collet |
| CN102335766A (en) * | 2011-09-22 | 2012-02-01 | 梁锦星 | Energy-saving clamping device of lathe |
| CN202845828U (en) * | 2012-06-29 | 2013-04-03 | 宜宾常达机械有限公司 | Clamping tool used for mushroom-shaped parts |
| CN204770771U (en) * | 2015-08-03 | 2015-11-18 | 台州市格特电机有限公司 | Motor shell face work anchor clamps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171219 |
|
| RJ01 | Rejection of invention patent application after publication |