CN106563831A - Reducing sleeve for static pressure expanding arbor - Google Patents
Reducing sleeve for static pressure expanding arbor Download PDFInfo
- Publication number
- CN106563831A CN106563831A CN201610909642.2A CN201610909642A CN106563831A CN 106563831 A CN106563831 A CN 106563831A CN 201610909642 A CN201610909642 A CN 201610909642A CN 106563831 A CN106563831 A CN 106563831A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- drill holder
- reducing sleeve
- diameter end
- static pressure
- 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.)
- Granted
Links
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
- B23B31/40—Expansion mandrels
- B23B31/4006—Gripping the work or tool by a split sleeve
- B23B31/4013—Details of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2215/00—Details of workpieces
- B23B2215/64—Thin walled components
Abstract
The invention discloses a reducing sleeve for a static pressure expanding arbor. The reducing sleeve is of a two-stair stepped shaft shaped structure; a through hole is formed in the middle part of the reducing sleeve; two mutually symmetric pin holes are formed in the edge of a large-diameter end of the reducing sleeve; a plurality of uniformly distributed linear cutting grooves are formed in the wall of the reducing sleeve in the axial direction; and the arbor penetrates through the through hole and is in clearance fit with the reducing sleeve. The invention provides the special reducing sleeve for the static pressure expanding arbor in a mode of clamping a workpiece on the static pressure expanding arbor; after the static pressure expanding arbor is adopted to clamp the workpiece, the workpiece can be directly clamped for processing without being heated, and the clamping time is smaller than 10s; with use by matching with the reducing sleeve, the phenomenon that the inner wall of the workpiece does not have scratches after the workpiece is processed is guaranteed, and thus deformation of the workpiece is reduced; and in addition, the processing qualified ratio of the workpiece is larger than or equal to 95 percent, and the processing accuracy requirement of the workpiece is met.
Description
Technical field
The invention belongs to a kind of jig field, and in particular to a kind of drill holder for Hydraulic Expanding Arbors.
Background technology
A kind of Thin-wall Aluminum Parts, its processing relies primarily on turning and completes, and processing has been used up the mode of hot charging and is installed
Workpiece, i.e., first put the workpiece in heating in electric drying oven with forced convection（95±5）℃×（7～20）Min, then using expanding with heat and contract with cold
Principle workpiece is installed on mandrel, treat directly to push workpiece from mandrel using push rod after the completion of work pieces process.So
One, work piece inner surface scuffing is not only easily caused, and workpiece deformation can be caused larger.For this kind of situation, it is necessary to seek
It is a kind of it is brand-new be installed mode to replace existing mode, solve the above problems.
The content of the invention
The present invention proposes to overcome shortcoming present in prior art, its objective is to provide a kind of for static pressure
The drill holder of expanding arbor.
The technical scheme is that：
A kind of drill holder for Hydraulic Expanding Arbors, the drill holder is in second order ladder shaft-like structure, and centre forms through hole, greatly
Footpath end margin is provided with two symmetrical pin holes；Drill holder jacket wall is axially formed multiple uniform wire cutting grooves；Core
Axle passes through through hole, and coordinates with drill holder gap.
The wire cutting bottom land end forms circular hole in communication.
The pin hole is arranged between adjacent two wire cutting groove.
Chamfering between the drill holder bigger diameter end and miner diameter end ladder is 67 °.
The drill holder bigger diameter end axial dimension is than workpiece about 8mm；Miner diameter end axial dimension 1～2mm more bigger than workpiece.
The drill holder carries out Surface heat-treatent, and case hardness is（52-54）HRC.
The invention has the beneficial effects as follows：
The invention provides a kind of drill holder for being exclusively used in Hydraulic Expanding Arbors in Hydraulic Expanding Arbors card engaging workpiece mode, adopts
After Hydraulic Expanding Arbors card engaging workpiece, workpiece need not be heated can directly be installed, process, and be installed time ＜ 10s, coordinate this
The use of invention drill holder, it is ensured that machine rear workpiece inner wall without scuffing, reduces workpiece deformation, and work pieces process qualification rate
>=95%, meet the requirement on machining accuracy of workpiece.
Description of the drawings
Fig. 1 is the sectional view of the present invention；
Fig. 2 is the dimensional structure diagram of the present invention.
Wherein：
The through hole of 1 drill holder 2
The wire cutting groove of 3 pin hole 4
5 circular holes.
Specific embodiment
The present invention is carried out specifically for the drill holder of Hydraulic Expanding Arbors with reference to Figure of description and embodiment
It is bright：
As shown in Figure 1, 2, a kind of drill holder for Hydraulic Expanding Arbors, the drill holder 1 is in second order ladder shaft-like structure, in
Between formed through hole 2, bigger diameter end edge is provided with two symmetrical pin holes 3；The jacket wall of drill holder 1 is axially formed multiple equal
The wire cutting groove 4 of cloth；Mandrel（It is not shown）Through through hole 2, and coordinate with the gap of drill holder 1, fit clearance is 0.015mm.
The bottom of wire cutting groove 4 forms circular hole 5 in communication.
The pin hole 3 is arranged between adjacent two wire cutting groove 4.
Chamfering between the bigger diameter end of the drill holder 1 and miner diameter end ladder is 67 °.
The bigger diameter end axial dimension of the drill holder 1 is than workpiece about 8mm；Miner diameter end axial dimension is more bigger than workpiece 1～
2mm。
The outside dimension of the drill holder 1 0.035mm～0.040mm less than workpiece diameter, it is ensured that workpiece can be installed smoothly
On drill holder.
Described the present embodiment of wire cutting groove 4 is 12, and width is 0.1mm, it is ensured that drill holder 1 can be equal with mandrel
Even expansion.
Mandrel surface has a ring annular groove, and when drill holder 1 is inserted in mandrel, pin can be screwed into directly through pin hole 3
In cannelure, drill holder 1 and mandrel are fixed, prevent from producing axial displacement between drill holder 1 and mandrel.Two on drill holder 1
When being symmetrical arranged mode and effectively preventing that wherein any one pin fails of pin hole, drill holder 1 still can be fixed on mandrel
On.
The using method of the present invention：
For the yielding feature of aluminum alloy thin walled workpieces, using Hydraulic Expanding Arbors card engaging workpiece, in order to protect workpiece inner wall
And Reducing distortion, the drill holder of the present invention coordinated with Hydraulic Expanding Arbors is devised according to the internal diameter size of workpiece.
Drill holder 1 is enclosed within mandrel, pin fixes drill holder 1 and mandrel through pin hole 3, is then charged into workpiece,
Directly workpiece is enclosed within drill holder, and ensures axially to be installed in place, then step on lathe pedal, Hydraulic Expanding Arbors utilize machine
Bed hydraulic cylinder realizes Self-pressurizing agri, and two cascaded surfaces of drill holder 1 expand to ensure workpiece uniform force simultaneously, workpiece clamping,
Processing can be started.After machining, lathe pedal is stepped on, mandrel unclamps automatically, workpiece can be removed smoothly.
Workpiece axially with end face of mandrel positioning, is radially positioned based on macropore in workpiece shoulder hole, and aperture is time positioning.Become
Chamfer design between the ladder of footpath set is 67 °, is the fillet of R0.9 between workpiece shoulder hole, while the axle at drill holder path
To size 1～2mm more bigger than workpiece, than workpiece about 8mm at big footpath, chamfer contact at workpiece fillet and ladder is prevented, caused
Axially cross and position, while also to ensure that workpiece is fully contacted vertically with drill holder, so as to even inflation.
In in order to ensure process workpiece can tensioner, will not it is relative with mandrel generation slide, while and can avoid
Expanding force is excessive to cause workpiece to deform, and the swell increment of Hydraulic Expanding Arbors is designed as≤0.1mm.
Hydraulic Expanding Arbors carry out Surface heat-treatent with drill holder 1, and case hardness is（52-54）HRC, to reduce anti-
Reassemble the abrasion during card.
The invention provides a kind of drill holder for being exclusively used in Hydraulic Expanding Arbors in Hydraulic Expanding Arbors card engaging workpiece mode,
After Hydraulic Expanding Arbors card engaging workpiece, workpiece need not be heated can directly be installed, process, and be installed time ＜ 10s, matches somebody with somebody
Close the use of drill holder of the present invention, it is ensured that machine rear workpiece inner wall without scuffing, reduce workpiece deformation, and work pieces process is closed
Lattice rate >=95%, meets the requirement on machining accuracy of workpiece.
Claims (6)
1. a kind of drill holder for Hydraulic Expanding Arbors, it is characterised in that：The drill holder（1）In second order ladder shaft-like knot
Structure, centre forms through hole（2）, bigger diameter end edge is provided with two symmetrical pin holes（3）；Drill holder（1）Jacket wall is along axle
To the multiple uniform wire cutting grooves of formation（4）；Mandrel passes through through hole（2）, and and drill holder（1）Gap coordinates.
2. a kind of drill holder for Hydraulic Expanding Arbors according to claim 1, it is characterised in that：The wire cutting groove
（4）Bottom forms circular hole in communication（5）.
3. a kind of drill holder for Hydraulic Expanding Arbors according to claim 1, it is characterised in that：The pin hole
（3）It is arranged at adjacent two wire cutting groove（4）Between.
4. a kind of drill holder for Hydraulic Expanding Arbors according to claim 1, it is characterised in that：The drill holder
（1）Chamfering between bigger diameter end and miner diameter end ladder is 67 °.
5. a kind of drill holder for Hydraulic Expanding Arbors according to claim 1, it is characterised in that：The drill holder
（1）Bigger diameter end axial dimension is than workpiece about 8mm；Miner diameter end axial dimension 1～2mm more bigger than workpiece.
6. a kind of drill holder for Hydraulic Expanding Arbors according to claim 1, it is characterised in that：The drill holder
（1）Surface heat-treatent is carried out, case hardness is（52-54）HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909642.2A CN106563831B (en) | 2016-10-19 | 2016-10-19 | Drill holder for Hydraulic Expanding Arbors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909642.2A CN106563831B (en) | 2016-10-19 | 2016-10-19 | Drill holder for Hydraulic Expanding Arbors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106563831A true CN106563831A (en) | 2017-04-19 |
| CN106563831B CN106563831B (en) | 2018-04-24 |
Family
ID=58533887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610909642.2A Active CN106563831B (en) | 2016-10-19 | 2016-10-19 | Drill holder for Hydraulic Expanding Arbors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106563831B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548077B2 (en) | 2020-04-08 | 2023-01-10 | Kennametal Inc. | Reducing sleeve, modular system for providing a reducing sleeve assembly, and machining assembly |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1145790A1 (en) * | 2000-03-13 | 2001-10-17 | Sandvik Tobler S.A. | High precision expanding mandrel with cylindrical clamping |
| CA2607669A1 (en) * | 2006-11-17 | 2008-05-17 | Hydra-Lock Corporation | Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve |
| CN201470924U (en) * | 2009-06-18 | 2010-05-19 | 中信戴卡轮毂制造股份有限公司 | Improved machining center clamp |
| CN202114285U (en) * | 2011-04-27 | 2012-01-18 | 上海东方泵业(集团)有限公司 | Expansion positioning mandrel |
| WO2013170475A1 (en) * | 2012-05-18 | 2013-11-21 | 浙江联宜电机股份有限公司 | Expanding and tightening clamping tool |
| CN103921142A (en) * | 2014-04-18 | 2014-07-16 | 蒋剑锋 | Fixing clamp for turning special-shaped workpiece |
| CN103990825A (en) * | 2014-06-18 | 2014-08-20 | 中核(天津)科技发展有限公司 | Machining tool for ultrathin-walled cylinder workpiece |
| CN104174888A (en) * | 2013-05-28 | 2014-12-03 | 钴碳化钨硬质合金公司 | Hydraulic chuck with a reduction sleeve |
| CN204295072U (en) * | 2014-10-24 | 2015-04-29 | 重庆市德顺汽车部件制造有限公司 | For the core fixture that rises of synchronizer gear sleeve |
| CN204673000U (en) * | 2015-05-30 | 2015-09-30 | 广西玉柴机器股份有限公司 | A kind of self-locking expansion set |
| CN204934662U (en) * | 2015-08-04 | 2016-01-06 | 安徽海立精密铸造有限公司 | A kind of expansion set for expansion sleeve type fixture |
| CN204953942U (en) * | 2015-09-14 | 2016-01-13 | 江门马丁电机科技有限公司 | Fixture device and processing equipment |
| CN105290439A (en) * | 2015-11-24 | 2016-02-03 | 新昌县中环磨料有限公司 | Clamp |
| CN205437204U (en) * | 2016-03-02 | 2016-08-10 | 浙江金驰机械有限公司 | Lathe expands and overlaps |
| CN205519741U (en) * | 2016-03-02 | 2016-08-31 | 浙江金驰机械有限公司 | Chamfer cover that rises |
-
2016
- 2016-10-19 CN CN201610909642.2A patent/CN106563831B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1145790A1 (en) * | 2000-03-13 | 2001-10-17 | Sandvik Tobler S.A. | High precision expanding mandrel with cylindrical clamping |
| CA2607669A1 (en) * | 2006-11-17 | 2008-05-17 | Hydra-Lock Corporation | Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve |
| CN201470924U (en) * | 2009-06-18 | 2010-05-19 | 中信戴卡轮毂制造股份有限公司 | Improved machining center clamp |
| CN202114285U (en) * | 2011-04-27 | 2012-01-18 | 上海东方泵业(集团)有限公司 | Expansion positioning mandrel |
| WO2013170475A1 (en) * | 2012-05-18 | 2013-11-21 | 浙江联宜电机股份有限公司 | Expanding and tightening clamping tool |
| CN104174888A (en) * | 2013-05-28 | 2014-12-03 | 钴碳化钨硬质合金公司 | Hydraulic chuck with a reduction sleeve |
| CN103921142A (en) * | 2014-04-18 | 2014-07-16 | 蒋剑锋 | Fixing clamp for turning special-shaped workpiece |
| CN103990825A (en) * | 2014-06-18 | 2014-08-20 | 中核(天津)科技发展有限公司 | Machining tool for ultrathin-walled cylinder workpiece |
| CN204295072U (en) * | 2014-10-24 | 2015-04-29 | 重庆市德顺汽车部件制造有限公司 | For the core fixture that rises of synchronizer gear sleeve |
| CN204673000U (en) * | 2015-05-30 | 2015-09-30 | 广西玉柴机器股份有限公司 | A kind of self-locking expansion set |
| CN204934662U (en) * | 2015-08-04 | 2016-01-06 | 安徽海立精密铸造有限公司 | A kind of expansion set for expansion sleeve type fixture |
| CN204953942U (en) * | 2015-09-14 | 2016-01-13 | 江门马丁电机科技有限公司 | Fixture device and processing equipment |
| CN105290439A (en) * | 2015-11-24 | 2016-02-03 | 新昌县中环磨料有限公司 | Clamp |
| CN205437204U (en) * | 2016-03-02 | 2016-08-10 | 浙江金驰机械有限公司 | Lathe expands and overlaps |
| CN205519741U (en) * | 2016-03-02 | 2016-08-31 | 浙江金驰机械有限公司 | Chamfer cover that rises |
Non-Patent Citations (3)
| Title |
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| 沈健: "用于外齿轮加工的静压膨胀芯轴", 《机械传动》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548077B2 (en) | 2020-04-08 | 2023-01-10 | Kennametal Inc. | Reducing sleeve, modular system for providing a reducing sleeve assembly, and machining assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106563831B (en) | 2018-04-24 |
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