CN202517284U - Four-claw center rest - Google Patents
Four-claw center rest Download PDFInfo
- Publication number
- CN202517284U CN202517284U CN2012201052438U CN201220105243U CN202517284U CN 202517284 U CN202517284 U CN 202517284U CN 2012201052438 U CN2012201052438 U CN 2012201052438U CN 201220105243 U CN201220105243 U CN 201220105243U CN 202517284 U CN202517284 U CN 202517284U
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- China
- Prior art keywords
- bearing
- rotor
- center rest
- centre frame
- positioning plate
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a lathe center rest, in particular to a four-claw center rest. The utility model mainly solves the technical problems of the defect that in the prior art, the center rest can only be used for processing an alignment belt in advance and cannot be used for carrying out large-range regulation alignment and the like. The four-claw center rest comprises a center rest frame body (1). The four-claw center rest is characterized in that the center rest frame body (1) is connected with a positioning bottom plate (2); the positioning bottom plate is matched with a machine tool lathe; a pair of bearings is arranged in the positioning bottom plate; rotors (3) are assembled in inner rings of the bearings; shaft shoulders are turned at one ends of the rotors; the inner ring of one bearing is retained; four screwed holes are uniformly distributed on the peripheral direction of each rotor; a regulating screw (4) is arranged; and the head part of the regulating screw is of a spherical shape.
Description
Technical field
The utility model relates to a kind of lathe centre frame, especially relates to a kind of four paws centre frame.
Background technology
At present, during machining elongate steel tubing parts internal structure, the most frequently used method is an end three-jaw clamping, and the other end utilizes tailstock centre to push up positive workpiece, processes the centering band then, and frame is held centre frame in centering band position again; Known machine center frame is the upper and lower frames shelf structure; Rely on rotating shaft can overturn, lock; Earlier with upper part opening, workpiece is placed on two support claws of centre frame the latter half during work, suitably behind the adjustable support pawl height the first half is turned over back locking slightly; Fine setting the latter half two support claws remain on the extended line of lathe spindle axis to guarantee the workpiece centre position, clamp lathe scroll chuck and locking centre frame the first half at last.But, when using traditional centre frame, can only carry out the fine adjustments of upper-lower position, also the centering band must be processed, otherwise axis of workpiece and main-shaft axis concentricity can not be guaranteed.Processing centering band has not only increased production process, and some workpiece are suitable processes the centering band, therefore, has caused very big puzzlement to production.
The utility model content
The utility model provides a kind of four paws centre frame, and it mainly is to solve the existing in prior technology centre frame can only process the centering band in advance, and can not regulate the technical problem of the deficiency etc. of centering on a large scale.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of four paws centre frame of the utility model comprises the centre frame framework, and described centre frame framework is connected with positioning plate; Positioning plate matches with machine tool guideway, is provided with pair of bearings in the positioning plate, and bearing inner race is equipped with rotor; Rotor one end car has the shaft shoulder, blocks the inner ring of a bearing, is uniformly distributed with 4 place's screwed holes on the rotor circumference direction; The adjustment screw is installed, and the adjustment screw head is a dome shape, can utilize the adjustment screw to come the central axis position of calibration of workpieces.Positioning plate matches with machine tool guideway, can realize that displacement is with fixing.
As preferably, described bearing is a taper roll bearing, is lined with middle spacer ring between the outer ring of two pairs of taper roll bearings.Taper roll bearing can carry bigger axial force and radial load, and radial load is converted into axial force, movement velocity and service life when guaranteeing work.
As preferably, the two ends of described taper roll bearing are fixed with gland, and the gland car has the shaft shoulder, and shaft shoulder position cooperates with positioning plate, and gland internal diameter position is provided with seal channel, and the felt collar oil sealing is installed, and on place's gland end face, opens oilhole.The taper roll bearing internal voids is coated with full lubricating oil, realizes the rotatory sealing of lubricating oil, and on place's gland end face, opens oilhole, adds lubricating oil during convenient daily use.Positioning plate and two ends of rotor are used gland seal, have formed an airtight lubricating system, can lubricating oil be provided for the centre frame running, and can store and prevent that lubricating oil from being polluted.
As preferably, the other end car of described rotor has external screw thread, and its locking nut that has been threaded is equipped with the adjustment packing ring between locking nut and the bearing inner race inner ring.Lean on the degree of tightness of locking nut and adjustment packing ring adjustment taper roll bearing, realize connecting between centre frame framework and the rotor, can carry out gyration.
Therefore, the centre frame of the utility model can not need to process in advance processing work under the situation of centering band, and enable manual centering workpiece centre, and is simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is side structure sketch mapes of Fig. 1.
Parts, position and numbering among the figure: centre frame framework 1, positioning plate 2, rotor 3, adjustment screw 4, taper roll bearing 5, middle spacer ring 6, gland 7, felt collar oil sealing 8, oilhole 9, locking nut 10, adjustment packing ring 11.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: a kind of four paws centre frame of this example; Like Fig. 1, Fig. 2; A centre frame framework 1 is arranged, and the centre frame framework is connected with positioning plate 2, and positioning plate matches with machine tool guideway; Be provided with in the positioning plate be lined with between the outer ring of 5, two pairs of taper roll bearings of a pair of taper roll bearing in spacer ring 6.The inner ring of taper roll bearing is equipped with rotor 3, and rotor one end car has the shaft shoulder, blocks the inner ring of a bearing, is uniformly distributed with 4 place's screwed holes on the rotor circumference direction, and adjustment screw 4 is installed, and adjustment screw one end has spanner to flat, and other end car becomes dome shape.The two ends of taper roll bearing are fixing with gland 7, and the gland car has the shaft shoulder, and shaft shoulder position cooperates with positioning plate, and gland internal diameter position is provided with seal channel, and felt collar oil sealing 8 is installed, and on place's gland end face, opens oilhole 9.The other end car of rotor has external screw thread, and its locking nut 10 that has been threaded is equipped with adjustment packing ring 11 between locking nut and the bearing inner race inner ring.
During use positioning plate 2 is installed on the lathe guide rail appropriate location; The bottom connects with pressing plate; Workpiece passes through from rotor 3 endoporus, and an end clamps with the scroll chuck that lathe carries slightly, end utilization adjustment screw 4 adjustment workpiece centres; After treating the centering workpiece centre, tighten 4 adjustment screws 4 and lathe three-jaw; During work, lathe drives the workpiece rotation, and the inner ring that workpiece drives adjustment screw 4, rotor 3, taper roll bearing 5 respectively rotates together; Taper roll bearing 5 internal lubrication oil are lubricated effect to bearing, and felt collar oil sealing 8 plays the rotatory sealing effect.
The above is merely the specific embodiment of the utility model; But the architectural feature of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (4)
1. a four paws centre frame comprises centre frame framework (1), it is characterized in that described centre frame framework (1) is connected with positioning plate (2); Positioning plate matches with machine tool guideway, is provided with pair of bearings in the positioning plate, and bearing inner race is equipped with rotor (3); Rotor one end car has the shaft shoulder, blocks the inner ring of a bearing, is uniformly distributed with 4 place's screwed holes on the rotor circumference direction; Adjustment screw (4) is installed, and the adjustment screw head is a dome shape.
2. a kind of four paws centre frame according to claim 1 is characterized in that described bearing is taper roll bearing (5), is lined with middle spacer ring (6) between the outer ring of two pairs of taper roll bearings.
3. a kind of four paws centre frame according to claim 2; The two ends that it is characterized in that described taper roll bearing (5) are fixing with gland (7); The gland car has the shaft shoulder, and shaft shoulder position cooperates with positioning plate (2), and gland internal diameter position is provided with seal channel; Felt collar oil sealing (8) is installed, and on place's gland end face, opens oilhole (9).
4. according to claim 1 or 2 or 3 described a kind of four paws centre frames; The other end car that it is characterized in that described rotor (3) has external screw thread; Its locking nut that has been threaded (10) is equipped with adjustment packing ring (11) between locking nut and the bearing inner race inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201052438U CN202517284U (en) | 2012-03-20 | 2012-03-20 | Four-claw center rest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201052438U CN202517284U (en) | 2012-03-20 | 2012-03-20 | Four-claw center rest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202517284U true CN202517284U (en) | 2012-11-07 |
Family
ID=47100252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201052438U Expired - Fee Related CN202517284U (en) | 2012-03-20 | 2012-03-20 | Four-claw center rest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202517284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273338A (en) * | 2013-06-08 | 2013-09-04 | 宁波瑞亚紧固件制造有限公司 | Auxiliary clamping mechanism for outer circle turning of moving bolt in marine diesel engine cylinder |
| CN103286581A (en) * | 2013-06-08 | 2013-09-11 | 宁波瑞亚紧固件制造有限公司 | Lathe center frame auxiliary clamping mechanism |
| CN105458748A (en) * | 2015-12-24 | 2016-04-06 | 张家口第一煤矿机械有限公司 | Lathe center frame and use method thereof |
-
2012
- 2012-03-20 CN CN2012201052438U patent/CN202517284U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273338A (en) * | 2013-06-08 | 2013-09-04 | 宁波瑞亚紧固件制造有限公司 | Auxiliary clamping mechanism for outer circle turning of moving bolt in marine diesel engine cylinder |
| CN103286581A (en) * | 2013-06-08 | 2013-09-11 | 宁波瑞亚紧固件制造有限公司 | Lathe center frame auxiliary clamping mechanism |
| CN105458748A (en) * | 2015-12-24 | 2016-04-06 | 张家口第一煤矿机械有限公司 | Lathe center frame and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150320 |
|
| EXPY | Termination of patent right or utility model |