CN105364094A - Live center used for machining shaft-type workpiece - Google Patents
Live center used for machining shaft-type workpiece Download PDFInfo
- Publication number
- CN105364094A CN105364094A CN201510823538.7A CN201510823538A CN105364094A CN 105364094 A CN105364094 A CN 105364094A CN 201510823538 A CN201510823538 A CN 201510823538A CN 105364094 A CN105364094 A CN 105364094A
- Authority
- CN
- China
- Prior art keywords
- bearing
- sliding sleeve
- workpiece
- sliding
- live center
- 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
- 238000003754 machining Methods 0.000 title abstract description 6
- 230000001788 irregular Effects 0.000 abstract description 5
- 230000008961 swelling Effects 0.000 abstract 3
- 238000003892 spreading Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/04—Live centres
- B23B23/045—Live centres the centres being adjustable
-
- 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
- B23B31/4073—Gripping the work or tool between planes almost perpendicular to the axis
Abstract
The invention discloses a live center used for machining a shaft-type workpiece. The live center used for machining the shaft-type workpiece comprises a sliding device, a first bearing (3), a second bearing (7) and a taper shank (1). The sliding device is composed of a bearing shell (5), a sliding swelling block (6) and a sliding sleeve (8). A stepped bore is formed in the axis of the bearing shell. The taper shank is installed in the stepped bore through the first bearing and the second bearing. The first bearing and the second bearing are fixed through an inner clamping ring (2) and an outer clamping ring (4). A conical ladder with the same center as an inner hole is arranged at one end of the outer circle surface of the bearing shell, and a groove is formed in the other end of the outer circle surface of the bearing shell. A clamping ring (9) is installed. The sliding sleeve is in a cylindrical shape. Three or more bosses are uniformly distributed on one end surface of the sliding sleeve. A long hole perpendicular to the sliding sleeve is formed in the side face of each boss and the long holes are matched with grooves of the same number in the sliding swelling block. The bosses and the sliding swelling block are connected to be a whole through pin shafts (12) and are installed on the outer circle surface of the bearing shell. According to the live center used for machining the shaft-type workpiece, off-centering caused by an irregular cylinder opening is prevented, fixing of the workpiece is more stable during operation, and positioning is more precise.
Description
Technical field
The present invention relates to a kind of machine tool accessory of cylindrical parts workpiece machining, specifically a kind of live center for working shaft-like workpiece.
Background technology
Live center is the processing accessory of the most frequently used a kind of shaft-like workpiece of lathe, along with the develop rapidly of China's hydraulic jack in recent years, has occurred again umbrella shape live center, has been applied to a secondary process of class workpiece and manufacturability processing.The blank of cylinder barrel is different from round steel, and round steel processing live center acts in centre bore, and positioning datum is reliable.Cylinder barrel class workpiece is then different, the end face of blank material is irregular irregular, position baseline is on the inner port edge line of workpiece, top operationally detent force mainly thrust on workpiece, force Workpiece fixing, because the blank of workpiece is irregular, the center of protruding point forces workpiece centre to offset to direction, protruding point, there is position error, cause next procedure processing difficulties.If fine finishining, this error makes the form and position tolerance of workpiece significantly decline, and even scraps.In addition, the protruding parts of cylinder class workpiece also makes umbrella shape live center unbalance stress, produces top elastic deformation, and when workpiece rotates, umbrella-shaped lathe center drifts about, and rocks, the precision of workpiece be can not be guaranteed.
Because the particularity of cylinder barrel class workpiece is that positioning datum is irregular, produce locating bias, and the concentricity of workpiece and axiality require higher, umbrella-shaped lathe center can not ensure the technological requirement of product at present in process of production.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of live center for working shaft-like workpiece, prevent the off-centring because cylinder mouth irregularity produces, during operation, workpiece is fixing more steady, more accurate positioning.
To achieve these goals, the technical solution used in the present invention is: a kind of live center for working shaft-like workpiece, comprises slide device, bearing one, bearing two and tapering handle, described slide device is by bearing case, slippage is risen block, sliding sleeve forms, bearing case axle center there is a shoulder hole, by bearing one and bearing two, tapering handle is installed in hole, and with interior snap ring and outer snap ring, bearing is fixed, one end of the outer round surface of bearing case establishes conic steps concentric with endoporus, the other end establishes a groove, snap ring is installed, sliding sleeve becomes cylindrical shape, the boss of uniform more than three on one end face of sliding sleeve, the side of each boss establishes the groove that the slippage of an elongated hole vertical with sliding sleeve and equivalent amount is risen on block to coincide, integral by pinned connection, and be arranged on the outer round surface of bearing case.
The endoporus of sliding sleeve of the present invention is arranged on the periphery on bearing case, and cone is established in outer round surface one end, is convenient to the handling of workpiece, tailstock tool is to workpiece movable, and the slippage block that rises is subject to thrust, along the cone spreading on bearing case, the masterpiece of spreading is used on the inwall of workpiece, workpiece tensioner, realizes, with endoporus centering, preventing the off-centring because cylinder mouth irregularity produces, during operation, workpiece is fixing more steady, more accurate positioning, sliding sleeve assists the slippage of each position to rise block action together, realizes synchronous; Workpiece obtains the concentricity equal with machine tool accuracy and axiality and enough expanding forces by rolling center.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 is operation principle view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, a kind of live center for working shaft-like workpiece, comprises slide device, bearing 1, bearing 27 and tapering handle 1; Described slide device is made up of rise block 6, sliding sleeve 8 of bearing case 5, slippage, by sliding motion, realizes the tensioner of workpiece.There is a shoulder hole in axle center to bearing case 5, by bearing 1 and bearing 27, tapering handle 1 is installed in hole, and with interior snap ring 2 and outer snap ring 4, bearing is fixed, realize rotating with workpiece of slide device, one end of the outer round surface of bearing case 5 establishes conic steps concentric with endoporus, the other end establishes a groove, installs snap ring 9, prevents slide device from coming off.Sliding sleeve 8 one-tenth cylindrical shape, the boss of uniform more than three on one end face of sliding sleeve 8, the side of each boss establishes the groove that the slippage of an elongated hole vertical with sliding sleeve 8 and equivalent amount is risen on block 6 to coincide, and is linked into an integrated entity, and be arranged on the outer round surface of bearing case 5 by bearing pin 12.
Slippage is risen between block 6 and sliding sleeve 8 and is strained by spring 10.Back-moving spring 10 ensures that the slippage block 6 that rises is fitted on the conic steps of the outer round surface of bearing case 5.
As shown in Figure 3, tapering handle 1 is installed on tailstock tool 13, and the endoporus of sliding sleeve 8 is arranged on the periphery on bearing case 5, cone is established in outer round surface one end, be convenient to the handling of workpiece, the other end is provided with the groove of block 6 equivalent amount that to rise with slippage, and coincide be connected with the rise boss of block 6 of slippage.Tailstock tool 13 is to workpiece movable, and the slippage block 6 that rises is subject to thrust, and along the cone spreading on bearing case 5, the masterpiece of spreading is used on the inwall of workpiece, workpiece tensioner, realizes feeling relieved with endoporus.Sliding sleeve 8 assists the slippage of each position to rise block 6 action together, realizes synchronous.Workpiece obtains the concentricity equal with machine tool accuracy and axiality and enough expanding forces by rolling center, and lathe tool carries out machining.
Claims (2)
1. for a live center for working shaft-like workpiece, it is characterized in that, comprise slide device, bearing one (3), bearing two (7) and tapering handle (1), described slide device is by bearing case (5), slippage is risen block (6), sliding sleeve (8) forms, bearing case (5) axle center there is a shoulder hole, by bearing one (3) and bearing two (7), tapering handle (1) is installed in hole, and with interior snap ring (2) and outer snap ring (4), bearing is fixed, one end of the outer round surface of bearing case (5) establishes conic steps concentric with endoporus, the other end establishes a groove, snap ring (9) is installed, sliding sleeve (8) becomes cylindrical shape, the boss of uniform more than three on one end face of sliding sleeve (8), the side of each boss establishes the groove that the slippage of an elongated hole vertical with sliding sleeve (8) and equivalent amount is risen on block (6) to coincide, linked into an integrated entity by bearing pin (12), and be arranged on the outer round surface of bearing case (5).
2. a kind of live center for working shaft-like workpiece according to claim 1, is characterized in that, described slippage is risen between block (6) and sliding sleeve (8) and strained by spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823538.7A CN105364094A (en) | 2015-11-24 | 2015-11-24 | Live center used for machining shaft-type workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823538.7A CN105364094A (en) | 2015-11-24 | 2015-11-24 | Live center used for machining shaft-type workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105364094A true CN105364094A (en) | 2016-03-02 |
Family
ID=55366996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823538.7A Pending CN105364094A (en) | 2015-11-24 | 2015-11-24 | Live center used for machining shaft-type workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105364094A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814366A (en) * | 2019-11-06 | 2020-02-21 | 博信矿山科技（徐州）股份有限公司 | Live center for machining shaft workpieces |
| CN112192161A (en) * | 2020-10-12 | 2021-01-08 | 贵州航天电子科技有限公司 | Machining method for shaft boss shell parts |
| RU2758976C1 (en) * | 2020-11-02 | 2021-11-03 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Device for installing workpiece on processing machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US412926A (en) * | 1889-10-15 | Adjustable cone-center for lathes | ||
| US1491332A (en) * | 1921-10-31 | 1924-04-22 | Norton Co | Work supporting and centering device for grinding machines |
| US4151767A (en) * | 1978-01-03 | 1979-05-01 | Szush John J Jr | Pipe center assembly |
| DE2819354A1 (en) * | 1978-05-03 | 1979-11-08 | Gipson & Co Metallverarbeitung | Live centre for lathe - has exchangeable taper nose to accommodate different internal dia. workpieces |
| KR200228088Y1 (en) * | 2000-12-23 | 2001-06-15 | 포항종합제철주식회사 | Center supporting device of regulative out-diameter |
| CN201906851U (en) * | 2010-12-22 | 2011-07-27 | 广元瑞峰精工机械制造有限公司 | Clamp for processing shaft sleeve |
| CN202097426U (en) * | 2011-06-03 | 2012-01-04 | 哈尔滨飞机工业集团有限责任公司 | Bulging fixture |
| CN202684137U (en) * | 2012-07-25 | 2013-01-23 | 天津市静海县盛鑫机械配件厂（普通合伙） | Hydraulic clamp for numerically controlled lathe |
| CN103639725A (en) * | 2013-11-28 | 2014-03-19 | 无锡市航鹄科技有限公司 | Cylindrical turning positioning tool |
| CN103894641A (en) * | 2014-04-16 | 2014-07-02 | 江西江铃底盘股份有限公司 | Outer-ejection-type inner expansion clamping sleeve |
| CN205289762U (en) * | 2015-11-24 | 2016-06-08 | 江苏华海钢结构有限公司 | A live center for processing axle type work piece |
-
2015
- 2015-11-24 CN CN201510823538.7A patent/CN105364094A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US412926A (en) * | 1889-10-15 | Adjustable cone-center for lathes | ||
| US1491332A (en) * | 1921-10-31 | 1924-04-22 | Norton Co | Work supporting and centering device for grinding machines |
| US4151767A (en) * | 1978-01-03 | 1979-05-01 | Szush John J Jr | Pipe center assembly |
| DE2819354A1 (en) * | 1978-05-03 | 1979-11-08 | Gipson & Co Metallverarbeitung | Live centre for lathe - has exchangeable taper nose to accommodate different internal dia. workpieces |
| KR200228088Y1 (en) * | 2000-12-23 | 2001-06-15 | 포항종합제철주식회사 | Center supporting device of regulative out-diameter |
| CN201906851U (en) * | 2010-12-22 | 2011-07-27 | 广元瑞峰精工机械制造有限公司 | Clamp for processing shaft sleeve |
| CN202097426U (en) * | 2011-06-03 | 2012-01-04 | 哈尔滨飞机工业集团有限责任公司 | Bulging fixture |
| CN202684137U (en) * | 2012-07-25 | 2013-01-23 | 天津市静海县盛鑫机械配件厂（普通合伙） | Hydraulic clamp for numerically controlled lathe |
| CN103639725A (en) * | 2013-11-28 | 2014-03-19 | 无锡市航鹄科技有限公司 | Cylindrical turning positioning tool |
| CN103894641A (en) * | 2014-04-16 | 2014-07-02 | 江西江铃底盘股份有限公司 | Outer-ejection-type inner expansion clamping sleeve |
| CN205289762U (en) * | 2015-11-24 | 2016-06-08 | 江苏华海钢结构有限公司 | A live center for processing axle type work piece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814366A (en) * | 2019-11-06 | 2020-02-21 | 博信矿山科技（徐州）股份有限公司 | Live center for machining shaft workpieces |
| CN112192161A (en) * | 2020-10-12 | 2021-01-08 | 贵州航天电子科技有限公司 | Machining method for shaft boss shell parts |
| RU2758976C1 (en) * | 2020-11-02 | 2021-11-03 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Device for installing workpiece on processing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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: 20160302 |
|
| RJ01 | Rejection of invention patent application after publication |