CN203817795U - Elastic chuck mechanism for lathe - Google Patents
Elastic chuck mechanism for lathe Download PDFInfo
- Publication number
- CN203817795U CN203817795U CN201420174776.0U CN201420174776U CN203817795U CN 203817795 U CN203817795 U CN 203817795U CN 201420174776 U CN201420174776 U CN 201420174776U CN 203817795 U CN203817795 U CN 203817795U
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- CN
- China
- Prior art keywords
- collet chuck
- elastic collet
- elastic
- conical surface
- lathe
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- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an elastic chuck mechanism for a lathe. The elastic chuck mechanism comprises a tapered sleeve, an elastic cylinder clamp and a housing, wherein a mounting flange is arranged at the rear end of the housing; an inner locking conical surface is arranged in the tapered sleeve; the excircle of the elastic cylinder clamp is an outer locking conical surface; the inner hole of the elastic cylinder clamp is a workpiece mounting cavity and arranged in the tapered sleeve in a matched manner; a mounting hole cavity is arranged in the housing; the tapered sleeve is fixed in the mounting hole cavity in the housing; internal threads are formed at the rear end of the elastic cylinder clamp; the elastic cylinder clamp can be connected with a lathe pull rod through the internal threads; an expanded concave tapered groove is formed in the front end surface of the elastic cylinder clamp; an end cover is fixed to the front end of the housing; a workpiece open cavity is formed in the center of the end cover; an expanded raised conical surface is arranged on the inner side of the end cover and matched with the expanded concave tapered groove; an anti-rotating pin is arranged between the end cover and the elastic cylinder clamp. According to the utility model, through double actions of the locking conical surfaces and the added expanded parts, a large clamping stroke of 0-3 mm can be realized.
Description
Technical field
The utility model relates to the machine tool accessories in a kind of field of machining and machinebuilding technology, the collet mechanism that has 0-3 millimeter and clamp greatly stroke specifically using on a kind of engine lathe or numerically controlled lathe.
Background technology
Collet claims again elastic collet chuck, is a kind of use extensively, and precision is high, but the technological equipment of easy operation and long service life.In order to quick location, clamping work pieces.But the standard elastic chuck that can purchase on market has the deficiency of 2 technology, 1: clamp stroke limited, the general clamping stroke that 0-0.2 millimeter only can be provided, the two ends size that runs into an axis products in reality is produced differs by more than 1 millimeter, technological requirement clamps after one end machines will change folder other end continuation processing, common standard collet cannot be realized, can only adopt one end to machine rear replacing collet chuck and clamp again the continuation processing of other one end, prouctiveness cannot meet need of production, 2: if standard elastic chuck people is for exceeding the scope of application, strengthen and clamp stroke, will cause collet chuck permanent deformation, cannot after lax, get back to original standard size.
Summary of the invention
The utility model overcomes existing deficiency, and a kind of lathe collet mechanism is provided, and realizes 0-3 millimeter and clamps greatly stroke.
Design: lathe of the present utility model has adopted the design of biconical surface structure with collet mechanism, has 0-3 millimeter and clamps greatly stroke thereby realized collet.
Concrete technical scheme of the present utility model is: a kind of lathe collet mechanism, comprise conic sleeve, elastic collet chuck, shell, the rear end of shell is mounting flange, in conic sleeve, be provided with the internal locking conical surface, the cylindrical of elastic collet chuck is the outer locking conical surface, the endoporus of elastic collet chuck is workpiece installation cavity, elastic collet chuck is engaged in conic sleeve, it is characterized in that: in shell, be provided with installation vestibule, in the fixing installation vestibule in the enclosure of conic sleeve, the rear end of elastic collet chuck is provided with internal thread, and elastic collet chuck can be connected with lathe pull bar by internal thread; The front end end face of elastic collet chuck is provided with expansion spill cone groove, and the front end of shell is fixed with end cap, and end cap center is that workpiece sky is begun to speak, and end cap inner side is provided with the protruding conical surface of expansion, expands the protruding conical surface and coordinates with expansion spill cone groove; Between end cap and elastic collet chuck, be provided with stop pin.
Further restriction to technique scheme: in conic sleeve, be provided with lubricating oil accumulator tank, when use, fill oil, the High Rotation Speed when work of this chuck, producing splashes plays lubricated effect with mist of oil.
Further restriction to technique scheme: the size setting of elastic collet chuck will ensure to expand the spill cone lateral surface opening part of groove and the outer edge thickness of the front end end face of elastic collet chuck is 3.5-4.5 millimeter, it is 3.5-4.5 millimeter that the size setting of elastic collet chuck will ensure to expand edge thickness in the spill cone medial surface opening part of groove and the front end end face of elastic collet chuck.
Further restriction to technique scheme: the medial surface of expanding spill cone groove on the front end end face of elastic collet chuck is parallel with the central axis of elastic collet chuck; The lateral surface of expansion spill cone groove is the conical surface, is 40-50o angle with the central axis of elastic collet chuck; The expansion projection conical surface of end cap inner side is corresponding with expansion spill cone groove.
Beneficial effect: when elastic collet chuck drives inwardly motion by lathe pull bar, convert axial tension to a clamping force perpendicular to collet center, by Workpiece clamping in the utility model; By elastic collet chuck is improved, increase expansion spill cone groove, with the expansion projection cone match on end cap, in the time of pull bar outward movment, promote elastic collet chuck reach, depart from the locking conical surface lax, under self elastic reaction, internal diameter returns to certain size, pull bar continues motion outward, elastic collet chuck and end cap come in contact, the expansion projection conical surface of the expansion spill cone groove of elastic collet chuck front end face and end cap inner side interacts, and converts one to and makes collet chuck internal diameter swell to the diameter requiring perpendicular to the outer tension force at collet center; The utility model, by the double action of expansion place of locking conical surface place and increase, reaches the maximum grip stroke of 3 millimeters, realizes 0-3 millimeter and clamps greatly stroke; Conic sleeve becomes sub-assembly with housing design, has overcome the integrative-structure in conventional design, in the time of long-term use tapering wearing and tearing, only needs to change conic sleeve, reduces costs; The nominal bore dia of elastic collet chuck, owing to there being initiatively expansion action to ensure, can use the common steel such as general 40cr, 45 steel, compares the processing technologys such as spring steel and Technology for Heating Processing relatively simple.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model Elastic collet chuck.
Fig. 3 is the right view of elastic collet chuck shown in Fig. 2.
Detailed description of the invention
As Fig. 1, Fig. 2, shown in Fig. 3, further describe the utility model: a kind of lathe collet mechanism, comprise conic sleeve 6, elastic collet chuck 1, shell 7, the rear end of shell is mounting flange, when use, be connected with lathe flange 9, in shell 7, be that vestibule is installed, in the fixing installation vestibule in the enclosure of conic sleeve 6, in conic sleeve, be provided with the internal locking conical surface, the cylindrical of elastic collet chuck is the outer locking conical surface 14, the endoporus of elastic collet chuck is workpiece installation cavity 12, elastic collet chuck 1 is engaged in conic sleeve 6, the rear end of elastic collet chuck is provided with internal thread 15, elastic collet chuck 1 can be connected with lathe pull bar 5 by internal thread, the front end end face of elastic collet chuck is provided with expansion spill cone groove 13, and the front end of shell is fixed with end cap 4, and end cap center is that workpiece sky is begun to speak, and end cap inner side is provided with the protruding conical surface 4a of expansion, expands the protruding conical surface and coordinates with expansion spill cone groove 13, between end cap and elastic collet chuck, be provided with stop pin 3(elastic collet chuck and be provided with pin-and-hole 2), under normal circumstances, the taper angles A of the outer locking conical surface 14 is got 30o, and the tapering of the conic sleeve internal locking conical surface supporting with it is got 27.5-28.5 o.
As shown in Figure 2 and Figure 3, elastic collet chuck 1 is cut with 4 grooves 11 vertically from large end face to spigot surface, and this is the same with standard elastic collet chuck action principle, is the needs for large stroke, relative standard's elastic collet chuck size is widened processing a little, can be designed to 3-4 millimeter.
As shown in Figure 1, in conic sleeve, be provided with lubricating oil accumulator tank 8, when use, fill oil, the High Rotation Speed when work of this chuck, producing splashes plays lubricated effect with mist of oil.
As shown in Figure 1 and Figure 2, the size setting of elastic collet chuck will ensure to expand the spill cone lateral surface opening part of groove and the outer edge thickness D of the front end end face of elastic collet chuck is 3.5-4.5 millimeter, and the size setting of elastic collet chuck will ensure to expand the spill cone medial surface opening part of groove and the front end end face inner edge thickness C of elastic collet chuck is 3.5-4.5 millimeter.
As shown in Figure 1 and Figure 2, the medial surface of expanding spill cone groove on the front end end face of elastic collet chuck is parallel with the central axis of elastic collet chuck; The lateral surface of expansion spill cone groove is the conical surface, with the central axis included angle B of elastic collet chuck be 45 degree; The expansion projection conical surface of end cap inner side is corresponding with expansion spill cone groove.The utility model is not limited to this, and the scope that the expansion spill cone lateral surface of groove and the central axis included angle B of elastic collet chuck are 40-50o, can achieve the goal.
Operation principle: the external screw thread of pull bar 5 is connected with the rear end internal thread of elastic collet chuck, strains elastic collet chuck during toward left movement when pull bar, produces axial tension, then by the internal locking conical surface of this mechanism internal taper barrel forward end, convert axial tension to a clamping force perpendicular to elastic collet chuck center by Workpiece clamping, end cap 4 end faces play the effect of axial location in technique simultaneously, in the time that turning right motion, pull bar promotes elastic collet chuck reach, depart from the locking conical surface, elastic collet chuck is lax, under self elastic reaction, internal diameter returns to certain size, pull bar is turned right and is continued motion, elastic collet chuck and end cap come in contact, the spill cone groove of elastic collet chuck front end face and the protruding conical surface of end cap inner side interact, converting one to makes collet chuck internal diameter swell to the nominal bore dia requiring perpendicular to the outer tension force at collet center, come in contact collet chuck internal diameter swell to the nominal bore dia requiring from elastic collet chuck and end cap, the pull bar motion of turning right stops after about 2 millimeters, the driving of pull bar can be hydraulic pressure, pneumatic etc.
Making of the present utility model and installation process: following parts are all done with No. 45 steels;
0.5mm fine finishining amount is reserved in elastic collet chuck 1 roughing, and quenching after completing, is tempered to hardness HRC40-45, and with grinding machine of universal processing, clamped one time completes spigot surface, clamps the conical surface, clamping area, then use line cutting processing 2 to symmetrical channels;
1 millimeter of fine finishining amount is stayed in shell 7 roughing, completes thickly modifiedly to install lathe spindle to hardness HRC28-32, with the own fine finishining endoporus of lathe and end face;
1 millimeter of fine finishining amount is stayed in end cap 4 roughing, draw-bore, and quenching after completing, is tempered to hardness HRC40-45, ensures that the expansion conical surface and inner face clamped one time machine when fine finishining;
After conic sleeve 6 is rough turn, stay 1 millimeter of fine finishining amount, quenching after completing, is tempered to hardness HRC40-45, and with grinding machine fine grinding, clamped one time completes cylindrical and inner conical surface, install: the driving mechanism (hydraulic pressure or pneumatic) that first starts this device is confirmed turn right motion in to bit position of pull bar, the conic sleeve processing 6 is put into housing 7, again by the internal thread rotation of elastic collet chuck 1 to the external screw thread of pull bar, screw in the time that the locking conical surface of conic sleeve also has 2-3 millimeter gap and stop, end cap is put on resilient sleeve, the straight pin of end cap inserts the pin-and-hole of resilient sleeve, the fixed screw of end cap is installed, whether now observing resilient sleeve can just slightly be opened end cap and can be in place again, if resilient sleeve can open, and end cap can not put in place, screw under side dumping, rotating end cap drives resilient sleeve to rotate to an angle together screw is installed again, repeatedly after trial assembly, resilient sleeve can just be opened the end cap side installation that can be in place again slightly.
Claims (4)
1. a lathe collet mechanism, comprise conic sleeve, elastic collet chuck, shell, the rear end of shell is mounting flange, in conic sleeve, be provided with the internal locking conical surface, the cylindrical of elastic collet chuck is the outer locking conical surface, the endoporus of elastic collet chuck is workpiece installation cavity, elastic collet chuck is engaged in conic sleeve, it is characterized in that: in shell, be provided with installation vestibule, in the fixing installation vestibule in the enclosure of conic sleeve, the rear end of elastic collet chuck is provided with internal thread, and elastic collet chuck can be connected with lathe pull bar by internal thread; The front end end face of elastic collet chuck is provided with expansion spill cone groove, and the front end of shell is fixed with end cap, and end cap center is that workpiece sky is begun to speak, and end cap inner side is provided with the protruding conical surface of expansion, expands the protruding conical surface and coordinates with expansion spill cone groove; Between end cap and elastic collet chuck, be provided with stop pin.
2. a kind of lathe collet mechanism according to claim 1, is characterized in that: in conic sleeve, be provided with lubricating oil accumulator tank.
3. according to a kind of lathe collet mechanism described in claim 1 or 2, it is characterized in that: the size setting of elastic collet chuck will ensure to expand the spill cone lateral surface opening part of groove and the outer edge thickness of the front end end face of elastic collet chuck is 3.5-4.5 millimeter, it is 3.5-4.5 millimeter that the size setting of elastic collet chuck will ensure to expand edge thickness in the spill cone medial surface opening part of groove and the front end end face of elastic collet chuck.
4. according to a kind of lathe collet mechanism described in claim 1 or 2, it is characterized in that: the medial surface of expanding spill cone groove on the front end end face of elastic collet chuck is parallel with the central axis of elastic collet chuck; The lateral surface of expansion spill cone groove is the conical surface, is 40-50o angle with the central axis of elastic collet chuck; The expansion projection conical surface of end cap inner side is corresponding with expansion spill cone groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420174776.0U CN203817795U (en) | 2014-04-11 | 2014-04-11 | Elastic chuck mechanism for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420174776.0U CN203817795U (en) | 2014-04-11 | 2014-04-11 | Elastic chuck mechanism for lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817795U true CN203817795U (en) | 2014-09-10 |
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ID=51473338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420174776.0U Expired - Fee Related CN203817795U (en) | 2014-04-11 | 2014-04-11 | Elastic chuck mechanism for lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817795U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999315A (en) * | 2015-07-31 | 2015-10-28 | 梧州奥卡光学仪器有限公司 | Finish turning method for fixed disc |
| CN108788802A (en) * | 2018-06-25 | 2018-11-13 | 安徽尼古拉电子科技有限公司 | A kind of Multifunctional positioning clamp of radar slotted waveguide tube antenna production |
| CN109759875A (en) * | 2019-02-27 | 2019-05-17 | 常州金球轴承厂 | Cold-extruded tooth shaft lathe finish fixture |
-
2014
- 2014-04-11 CN CN201420174776.0U patent/CN203817795U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999315A (en) * | 2015-07-31 | 2015-10-28 | 梧州奥卡光学仪器有限公司 | Finish turning method for fixed disc |
| CN104999315B (en) * | 2015-07-31 | 2017-05-24 | 梧州奥卡光学仪器有限公司 | Finish turning method for fixed disc |
| CN108788802A (en) * | 2018-06-25 | 2018-11-13 | 安徽尼古拉电子科技有限公司 | A kind of Multifunctional positioning clamp of radar slotted waveguide tube antenna production |
| CN109759875A (en) * | 2019-02-27 | 2019-05-17 | 常州金球轴承厂 | Cold-extruded tooth shaft lathe finish fixture |
| CN109759875B (en) * | 2019-02-27 | 2021-09-14 | 常州金球轴承厂 | Finish turning clamp for cold extrusion gear shaft |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160411 |