CN108500652A - Centre frame - Google Patents
Centre frame Download PDFInfo
- Publication number
- CN108500652A CN108500652A CN201810262930.2A CN201810262930A CN108500652A CN 108500652 A CN108500652 A CN 108500652A CN 201810262930 A CN201810262930 A CN 201810262930A CN 108500652 A CN108500652 A CN 108500652A
- Authority
- CN
- China
- Prior art keywords
- pressure head
- translation cam
- upperpush rod
- component
- bracket
- 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
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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
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
- B23Q1/76—Steadies; Rests
- B23Q1/763—Rotating steadies or rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a kind of automatic centering centre frame, main points are：Including cabinet, driving device, translation cam, upperpush rod component, push bar assembly and pressure head component.Translation cam horizontally slips setting in the chassis, and translation cam side-to-side movement is driven by driving device.The upperpush rod of upperpush rod component and down-pressed pole is set to swing by translation cam, to which the pressure head component for making the pressure head component being located on upperpush rod and down-pressed pole and on translation cam is collapsed to the axis of workpiece to be processed simultaneously, to which workpiece to be processed be supported, and the roller frame of pressure head component is rotated automatically according to the shape in the outside face of workpiece to be processed, it is ensured that 2 support rollers on roller frame are pressed on workpiece to be processed simultaneously.
Description
Technical field
The present invention relates to machining equipment technical field, specifically a kind of auxiliary for processing long axis class machine components
The centre frame of support.
Background technology
Centre frame is a kind of auxiliary support apparatus in thin and long shafts part turning or grinding process so that ultra-fine light
The high-precision of the parts such as axis, accurate lead screw, ball-screw is processed into possibility.Usual routine on horizontal lathe or cylindrical grinder
The closed center rest used is upper and lower two bodies composite structure, and three centripetal mandrels support workpiece.It is needed when clamping workpiece in opening
Upper body is closed in heart frame upper body after being packed into workpiece, and rotational workpieces adjust the axial internal clearance of mandrel, reach according to circle bounce numerical value
The bearing of centre frame and the rotation center of workpiece overlap.After workpiece completes processing, centre frame upper body is opened again, unloads workpiece.
Using conventional closed center rest, the workpiece adjustment concentric time is long, and precision is low, and efficiency is low.
Current existing centering center rest mostly uses greatly hydraulic cylinder as motive power, exists and needs special outfit liquid
Pressure station, Hydraulic Elements requirement on machining accuracy is high, and process and assemble difficulty is big, and use space is limited, and production environment is easy by greasy dirt
The shortcomings of.There are also centering center rests to use electric-machine directly-driven mode, but a kind of mobile speed can only be used in centering process
Degree, if the faster centering speed of selection, can cause to generate impact when feeling relieved idler wheel contact workpiece surface, directly affect workpiece
Precision and surface quality；If the slower centering speed of selection, can be substantially reduced processing efficiency, and this kind of mode is whole
Motor remains at working condition in a process, and high energy consumption, calorific value is big, electrical equipment service life reduction.At present no matter
It is hydraulic pressure or electronic automatic centering center rest or manually adjusts centre frame, is all only used for supporting the cylindrical diameter of axle, and can not
Solve the problems, such as the support of the circular cone diameter of axle.Some elongated axial workpieces, the cylindrical shaft part that one end not can be used for supporting（Only
Longer circular conical surface）, when processing can not improve its rigidity using centre frame, cause the processing efficiency and processing essence of such part
Degree is all very low.It can only use that one end clamps, the other end is held out against or two with top for the thin and long shafts part of circular conical surface at present
The top installation way held out against is held, if major diameter is bigger, workpiece is rigidly poor, will produce by workpiece after cutting force larger
Flexural deformation, when processing, can only select the cutting data of very little, and not only processing efficiency is extremely low, it is also difficult to obtain higher processing essence
Degree.So the circular conical surface axial workpiece that processing is elongated, is always a technological difficulties in mechanical processing.
Invention content
The object of the present invention is to provide a kind of simple in structure, the lower Auxiliary support that can be used for circular conical surface of use cost
Centre frame.
Realizing the basic technical scheme of the object of the invention is：A kind of centre frame, it is characterised in that：Including cabinet, driving dress
It sets, translation cam, upperpush rod component, push bar assembly and pressure head component.Cabinet includes body, upper bracket and lower bracket.Upper branch
Frame is fixed on the upside of body, and right end stretches out outside body.Lower bracket is fixed on the downside of body, and right end stretches out
Outside body.There is the body structure of opening to the right to which body, upper bracket and lower bracket are formed.Translation cam horizontally slips setting
Between body, upper bracket and lower bracket, translation cam side-to-side movement is driven by driving device.
Driving device includes T-type lead screw, feed screw nut, rocking arm extension bar and crank.It is convex that feed screw nut is fixed at translation
On in the middle part of the left part of wheel.The left part of T-type lead screw is rotatably arranged on by angular contact ball bearing on body, right part and feed screw nut
It matches.The left end of T-type lead screw is rectangular, for being sequentially connected with rocking arm extension bar.Rocking arm extension bar lower end is equipped with and T-type lead screw
The rectangular corresponding connection square hole of left end, rocking arm extension bar connects square hole by it and is sleeved on the left end of T-type lead screw when use.Crank
It screws and is fixed on the upper end of rocking arm extension bar.
Upperpush rod component includes upperpush rod, upper directive wheel and upper reset spring.Upperpush rod is hingedly connected to machine by its middle part
On the right end of the upper bracket of case, lever construction is formed.Upper directive wheel is rotatably arranged on the left end of upperpush rod, along translation cam
Upper guide surface rolling movement.Upper reset spring is arranged between upperpush rod and upper bracket, and directive wheel is made to be pressed into contact with always
On the upper guide surface of translation cam.
It includes down-pressed pole, lower directive wheel and lower resetting spring to push bar assembly.Down-pressed pole is hingedly connected to down by its middle part
On the right end of holder, lever construction is formed.Lower directive wheel is rotatably arranged on the left end of down-pressed pole, along the lower guiding of translation cam
Face rolling movement.Lower resetting spring is arranged between down-pressed pole and lower bracket, so that lower directive wheel is pressed into contact with always convex in translation
On the lower guide surface of wheel.
Pressure head component has 3 groups, and the structure of 3 groups of pressure head components is identical, includes roller frame and 2 support rollers.3 groups of pressure head components
It is referred to as middle pressure head component, seaming chuck component by the difference of the location of its and pushes head assembly.2 support rollers edge successively
Front and back to being rotatably arranged on roller frame, roller frame can swing certain angle, make the pivot center of 2 support rollers and work to be processed
The surface of the part that is in contact of part is mutually parallel.The roller frame of middle pressure head component is hingedly connected to the middle part right end of translation cam
On, pivot center is perpendicular to the plane where the pivot center of 2 support rollers and the axis of workpiece to be processed of middle pressure head component.
On the roller frame of seaming chuck component is hingedly connected on the downside of the right end of upperpush rod, pivot center edge is controlled to horizontally disposed.Under
On the roller frame of pressure head component is hingedly connected on the downside of the right end of down-pressed pole, pivot center edge is controlled to horizontally disposed.
Technical solution based on above-mentioned basic technical scheme is：2 support rollers of pressure head component are all made of deep-groove ball axis
It holds.
The present invention has the effect of positive：（1）The automatic centering centre frame of the present invention efficiently solves axial workpiece circular cone
The technical issues of face self-centering and Auxiliary support, can greatly improve the processing rigidity of elongated circular conical surface axial workpiece, not only
The processing efficiency of such part can be greatly improved, moreover it is possible to effectively improve machining accuracy；The centre frame of the present invention also can be used simultaneously
Self-centering in cylindrical surface and Auxiliary support.The structure of the centre frame of the present invention is simple, and installing and dismounting workpiece is convenient and efficient, energy
Fast automatic centering, centering precision is high, greatly shortens the secondary process time.
（2）The driving device of the centre frame of the present invention uses manual mode, coordinates T-type lead screw and feed screw nut, can not only
It is as needed to adjust speed manually, and energy self-locking when supporting is compressed, it is more energy saving, use cost is further reduced, and
Reliability is preferable.
（3）The pressure head component of the present invention is supported using rolling bearing as contact, and not only contact precision is high, but also uses the longevity
Life length, it is at low cost.The roller frame of pressure head component of the present invention can swing certain angle, make the pivot centers of 2 support rollers and wait for
The surface of the part that is in contact of workpieces processing is mutually parallel, it is ensured that 2 support rollers are pressed on workpiece to be processed simultaneously.
Description of the drawings
Fig. 1 is structural schematic diagram when centre frame of the invention is in releasing orientation；
Fig. 2 is in structural schematic diagram when support work status for the centre frame in Fig. 1；
Fig. 3 is that Fig. 2 removes the schematic top plan view after driving device；
Fig. 4 is A in Fig. 2 to partial schematic diagram；
Fig. 5 is that Fig. 3 removes the structural schematic diagram after upper bracket and upperpush rod component；
Fig. 6 be from the left sides of Fig. 1 when body schematic diagram；
Fig. 7 is the B-B schematic cross-sectional views in Fig. 6.
Label in above-mentioned attached drawing is as follows：
Cabinet 1, body 1-1, upper bracket 1-2, lower bracket 1-3,
Driving device 2, T-type lead screw 2-1, feed screw nut 2-2, rocking arm extension bar 2-3, crank 2-4,
Translation cam 3,
Upperpush rod component 4, upperpush rod 4-1, upper directive wheel 4-2, upper reset spring 4-3,
Pushing bar assembly 5, down-pressed pole 5-1, lower directive wheel 5-2, lower resetting spring 5-3,
Pressure head component 6, middle pressure head component 6a, seaming chuck component 6b push head assembly 6c, roller frame 6-1, support roller 6-2.
Specific implementation mode
The description in the orientation of the present invention is carried out according to orientation shown in FIG. 1 namely direction up and down shown in FIG. 1 is
One side in the direction up and down of description, court of Fig. 1 institutes is front, and the side away from Fig. 1 is rear.
（Embodiment 1）
See that Fig. 1 to Fig. 7, centre frame of the invention include cabinet 1, driving device 2, translation cam 3, upperpush rod component 4, down-pressed pole
Component 5 and pressure head component 6.
Cabinet 1 includes body 1-1, upper bracket 1-2 and lower bracket 1-3.Upper bracket 1-2 is fixed on the upside of body 1-1,
And right end stretches out outside body 1-1.Lower bracket is fixed on the downside of body 1-1, and right end stretches out outside body 1-1.To
Body 1-1, upper bracket 1-2 and lower bracket 1-3, which are formed, has the body structure of opening to the right.Translation cam 3 horizontally slips setting
Between body 1-1, upper bracket 1-2 and lower bracket 1-3,3 side-to-side movement of translation cam is driven by driving device 2.
See that Fig. 1 and Fig. 2, driving device 2 include T-type lead screw 2-1, feed screw nut 2-2, rocking arm extension bar 2-3 and crank 2-4.
On feed screw nut 2-2 is fixed in the middle part of the left part of translation cam 3；The left part of T-type lead screw 2-1 passes through angular contact ball bearing
It is rotatably arranged on body 1-1, right part is matched with feed screw nut 2-2.The left end of T-type lead screw 2-1 is rectangular, is used for and rocking arm
Extension bar 2-3 is sequentially connected.The lower ends rocking arm extension bar 2-3 be equipped with the rectangular corresponding connection square hole of the left end of T-type lead screw 2-1,
Rocking arm extension bar 2-3 connects square hole by it and is sleeved on the left end of T-type lead screw 2-1 when use.Crank 2-4, which is screwed, is fixed at rocking arm
On the upper end of extension bar 2-3.
See that Fig. 1 to Fig. 4, upperpush rod component 4 include upperpush rod 4-1, upper directive wheel 4-2 and upper reset spring 4-3.Upperpush rod
4-1 is hingedly connected to by its middle part on the right end of upper bracket 1-2, forms lever construction.Upper directive wheel 4-2 is rotatably arranged on pressure
On the left end of bar 4-1, along the upper guide surface 3-1 rolling movements of translation cam 3.Upper reset spring 4-3 setting upperpush rod 4-1 with
Between upper bracket 1-2, directive wheel 4-2 is made to be pressed into contact with always on the upper guide surface 3-1 of translation cam 3.
See Fig. 1 and Fig. 2, it includes down-pressed pole 5-1, lower directive wheel 5-2 and lower resetting spring 5-3 to push bar assembly 5.Down-pressed pole
5-1 is hingedly connected to by its middle part on the right end of lower bracket 1-3, forms lever construction.Lower directive wheel 5-2 is rotatably arranged on pushing
On the left end of bar 5-1, along the lower guide surface 3-2 rolling movements of translation cam 3.Lower resetting spring 5-3 setting down-pressed pole 5-1 with
Between lower bracket 1-3, lower directive wheel 5-2 is made to be pressed into contact with always on the lower guide surface 3-2 of translation cam 3.
See that Fig. 1 to Fig. 5, pressure head component 6 there are 3 groups, the structure of 3 groups of pressure head components 6 is identical, includes roller frame 6-1 and 2
Support roller 6-2.3 groups of pressure head components 6 by its location of difference be referred to as middle pressure head component 6a, seaming chuck component 6b and under
Pressure head component 6c.2 support roller 6-2 are all made of deep groove ball bearing, and 2 support roller 6-2 are successively along front and back to being rotatably arranged on roller frame
On 6-1, roller frame 6-1 can swing certain angle, make the pivot center of 2 support roller 6-2 and being in contact for workpiece to be processed 100
Partial surface is mutually parallel.The roller frame 6-1 of middle pressure head component 6a is hingedly connected on the middle part right end of translation cam 3,
Pivot center is flat where the pivot center of 2 support roller 6-2 and the axis of workpiece to be processed 100 of middle pressure head component 6a
Face.On the roller frame 6-1 of seaming chuck component 6b is hingedly connected on the downside of the right end of upperpush rod 4-1, pivot center along left and right to
It is horizontally disposed.The roller frame 6-1 for pushing head assembly 6c is hingedly connected on the downside of the right end of down-pressed pole 5-1, pivot center edge
It controls to horizontally disposed.
The centre frame of the present invention is in use, shake with hands crank 2-4, to make T-type lead screw 2-1 rotate so that lead screw spiral shell
Female 2-2 drives translation cam 3 to move right, and translation cam 3 pushes up the left end of the upperpush rod 4-1 of upperpush rod component 4 upwards, will under
The left end of the down-pressed pole 5-1 of depression bar assembly 5 pushes up downwards, so that the right end of the upperpush rod 4-1 of upperpush rod component 4 is downwards to waiting for
Workpieces processing 100 is close, while the right end for pushing the down-pressed pole 5-1 of bar assembly 5 is close to workpiece to be processed 100 upwards, and 3 groups
The distance of pressure head component 6 to the axis of workpiece to be processed 100 remains identical（Ensured by the curve of translation cam 3）, finally
Workpiece to be processed 100 is compressed and is supported.Shapes of the roller frame 6-1 of pressure head component 6 automatically according to the outside face of workpiece to be processed 100
Shape rotates, it is ensured that 2 support roller 6-2 are pressed on workpiece to be processed 100 simultaneously.
Above example is used for illustrative purposes only rather than limitation of the present invention, the technology people in relation to technical field
Member without departing from the spirit and scope of the present invention, can also make various transformation and variation, during concrete application
It can also be accordingly transformed according to the inspiration of above-described embodiment, therefore all equivalent technical solutions should be included into this hair
Within bright scope of patent protection.
Claims (2)
1. a kind of centre frame, it is characterised in that：Including cabinet, driving device, translation cam, upperpush rod component, push bar assembly
And pressure head component；Cabinet includes body, upper bracket and lower bracket；Upper bracket is fixed on the upside of body, and right end stretches out machine
In vitro；Lower bracket is fixed on the downside of body, and right end stretches out outside body；To body, upper bracket and lower bracket shape
At the body structure with opening to the right；Translation cam, which horizontally slips, to be arranged between body, upper bracket and lower bracket, by driving
Device drives translation cam side-to-side movement；
Driving device includes T-type lead screw, feed screw nut, rocking arm extension bar and crank；Feed screw nut is fixed at translation cam
On in the middle part of left part；The left part of T-type lead screw is rotatably arranged on by angular contact ball bearing on body, and right part matches with feed screw nut
It closes；The left end of T-type lead screw is rectangular, for being sequentially connected with rocking arm extension bar；Rocking arm extension bar lower end is equipped with the left end with T-type lead screw
Rectangular corresponding connection square hole, rocking arm extension bar connects square hole by it and is sleeved on the left end of T-type lead screw when use；Crank screws
It is fixed on the upper end of rocking arm extension bar；
Upperpush rod component includes upperpush rod, upper directive wheel and upper reset spring；Upperpush rod is hingedly connected to cabinet by its middle part
On the right end of upper bracket, lever construction is formed；Upper directive wheel is rotatably arranged on the left end of upperpush rod, is led along translation cam
To face rolling movement；Upper reset spring is arranged between upperpush rod and upper bracket, so that directive wheel is pressed into contact with always and is translating
On the upper guide surface of cam；
It includes down-pressed pole, lower directive wheel and lower resetting spring to push bar assembly；Down-pressed pole is hingedly connected to lower bracket by its middle part
Right end on, formed lever construction；Lower directive wheel is rotatably arranged on the left end of down-pressed pole, and the lower guide surface along translation cam rolls
Dynamic movement；Lower resetting spring is arranged between down-pressed pole and lower bracket, and lower directive wheel is made to be pressed into contact with always in translation cam
On lower guide surface；
Pressure head component has 3 groups, and the structure of 3 groups of pressure head components is identical, includes roller frame and 2 support rollers；3 groups of pressure head components press it
The difference of location is referred to as middle pressure head component, seaming chuck component and pushes head assembly；2 support rollers are successively along front and back
To being rotatably arranged on roller frame, roller frame can swing certain angle, make the pivot center and workpiece to be processed of 2 support rollers
The be in contact surface of part is mutually parallel；The roller frame of middle pressure head component is hingedly connected on the middle part right end of translation cam,
Pivot center is perpendicular to the plane where the pivot center of 2 support rollers and the axis of workpiece to be processed of middle pressure head component；Upper pressure
On the roller frame of head assembly is hingedly connected on the downside of the right end of upperpush rod, pivot center edge is controlled to horizontally disposed；Push-down head
On the roller frame of component is hingedly connected on the downside of the right end of down-pressed pole, pivot center edge is controlled to horizontally disposed.
2. centre frame according to claim 1, it is characterised in that：2 support rollers of pressure head component are all made of deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810262930.2A CN108500652A (en) | 2018-03-28 | 2018-03-28 | Centre frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810262930.2A CN108500652A (en) | 2018-03-28 | 2018-03-28 | Centre frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108500652A true CN108500652A (en) | 2018-09-07 |
Family
ID=63378856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810262930.2A Pending CN108500652A (en) | 2018-03-28 | 2018-03-28 | Centre frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108500652A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640422A (en) * | 2019-09-24 | 2020-01-03 | 河南欣柯奕舟重工科技有限公司 | Disassembly honing device of hydraulic cylinder |
| JP7085253B1 (en) * | 2021-09-16 | 2022-06-16 | 有限会社システムエンジニアリング | Grindstone width forming device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220954A (en) * | 1967-06-06 | 1971-01-27 | Bruno Dietl | Improvements in and relating to devices for clamping and/or holding a workpiece in a lathe |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| US6699113B2 (en) * | 2001-10-12 | 2004-03-02 | Arobotech Systems, Inc. | Steady rest with vertical adjustment |
| CN203380626U (en) * | 2013-08-07 | 2014-01-08 | 晋西工业集团有限责任公司 | Center frame with rotary contact head |
| CN203712294U (en) * | 2014-02-28 | 2014-07-16 | 林月喜 | Manual centering center frame of lathe |
| CN204339303U (en) * | 2014-12-03 | 2015-05-20 | 陕西理工学院 | A kind of electric-machine directly-driven type centering center rest |
| CN106584136A (en) * | 2016-12-28 | 2017-04-26 | 宁波市精恒凯翔机械有限公司 | Self-centering center frame |
| CN107127590A (en) * | 2017-06-09 | 2017-09-05 | 北京工业大学 | A kind of dexterous three-jaw automatic centring fixture of translation swallow appearance cam mandrel type |
-
2018
- 2018-03-28 CN CN201810262930.2A patent/CN108500652A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220954A (en) * | 1967-06-06 | 1971-01-27 | Bruno Dietl | Improvements in and relating to devices for clamping and/or holding a workpiece in a lathe |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| US6699113B2 (en) * | 2001-10-12 | 2004-03-02 | Arobotech Systems, Inc. | Steady rest with vertical adjustment |
| CN203380626U (en) * | 2013-08-07 | 2014-01-08 | 晋西工业集团有限责任公司 | Center frame with rotary contact head |
| CN203712294U (en) * | 2014-02-28 | 2014-07-16 | 林月喜 | Manual centering center frame of lathe |
| CN204339303U (en) * | 2014-12-03 | 2015-05-20 | 陕西理工学院 | A kind of electric-machine directly-driven type centering center rest |
| CN106584136A (en) * | 2016-12-28 | 2017-04-26 | 宁波市精恒凯翔机械有限公司 | Self-centering center frame |
| CN107127590A (en) * | 2017-06-09 | 2017-09-05 | 北京工业大学 | A kind of dexterous three-jaw automatic centring fixture of translation swallow appearance cam mandrel type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640422A (en) * | 2019-09-24 | 2020-01-03 | 河南欣柯奕舟重工科技有限公司 | Disassembly honing device of hydraulic cylinder |
| JP7085253B1 (en) * | 2021-09-16 | 2022-06-16 | 有限会社システムエンジニアリング | Grindstone width forming device |
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Application publication date: 20180907 |
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| RJ01 | Rejection of invention patent application after publication |