CN204195350U - For the centrifugal stationary fixture of turning - Google Patents
For the centrifugal stationary fixture of turning Download PDFInfo
- Publication number
- CN204195350U CN204195350U CN201420590268.0U CN201420590268U CN204195350U CN 204195350 U CN204195350 U CN 204195350U CN 201420590268 U CN201420590268 U CN 201420590268U CN 204195350 U CN204195350 U CN 204195350U
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- CN
- China
- Prior art keywords
- centrifugal
- sleeve
- pull bar
- diameter
- stop collar
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of centrifugal stationary fixture for turning, comprise sleeve, back-moving spring, connecting rod and collet, the holddown groove be connected with back-moving spring is had in sleeve, the other end of back-moving spring is connected with connecting rod, holddown groove notch place is provided with limiting plate, is provided with the fixture of fixed connecting rod between back-moving spring and limiting plate; Centrifugal take-up device comprises centrifugal-block, pull bar, stop collar, and centrifugal-block is located at holddown groove both sides, and pull bar one end connects centrifugal-block, and the pull bar other end connects stop collar afterbody, and stop collar is located at that collet is outer and the head inwall of stop collar is bellmouth.The utility model overcomes existing turning clamp and utilizes pull bar clamping work pieces, driving torque easy damaged fixture and the shortcoming of the weak effect that is fixedly clamped, there is provided one to utilize rotating centrifugal clamping work pieces, avoid causing damage and the effective a kind of centrifugal stationary fixture for turning that is fixedly clamped to fixture.
Description
Technical field
The utility model belongs to the field of fixation devices of workpiece or cutter, is specifically related to a kind of centrifugal stationary fixture for turning.
Background technology
Turnery processing is on lathe, utilize workpiece to rotate the method for workpiece being carried out to machining relative to cutter.Turning is suitable for processing rotary surface, and the workpiece that major part has rotary surface can be processed with method for turning, and as inside and outside circle cylinder, the inside and outside circle conical surface, end face, groove, screw thread and rotoforming face etc., cutter for same is lathe tool mainly.And the cutting energy of turnery processing provides primarily of workpiece, instead of provided by cutter.The item that should be noted that in Tutrning Process has: choose reasonable cutting data, choose reasonable cutter, choose reasonable fixture etc.
For these points for attention of choose reasonable fixture, fixture is used for fixing processing object in machine-building process, makes it to occupy correct position, to accept the device of constructing or detecting.And existing fixture generally includes pull bar and chuck, utilize the pulling force of pull bar and thrust to make chuck produce radial contraction or open, thus give Workpiece clamping power, be fixedly clamped; But, owing to being strained and fixed when operating, first must pull or pushing drawing rod, Workpiece clamping could be fixed, and then turnery processing could be carried out to workpiece, and turnery processing needs rotary main shaft to drive workpiece rotation to be processed, and when rotating, fixture must be driven to rotate, certain moment of torsion can be produced to fixture, therefore, easy after time is permanent damage is caused to fixture itself, and the gap between each part can be brought change due to rotation, such as loosening between part, thus affect clamping effect, fix to clamp weak effect.
Utility model content
The technical problems to be solved in the utility model utilizes pull bar clamping work pieces for existing turning clamp, driving torque easy damaged fixture and the shortcoming of the weak effect that is fixedly clamped, there is provided one to utilize rotating centrifugal clamping work pieces, avoid causing damage and the effective a kind of centrifugal stationary fixture for turning that is fixedly clamped to fixture.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: for the centrifugal stationary fixture of turning, comprise sleeve, back-moving spring, connecting rod and collet, one end diameter of sleeve is greater than other end diameter, one end of diameter length is major diameter end, the short one end of diameter is minor axis end, and the end of minor axis end is axially arranged with through hole; Major diameter end side in sleeve is provided with towards minor axis end opening and holds the holddown groove of back-moving spring, one end of back-moving spring is connected and fixed the bottom of groove, the other end of back-moving spring is connected with connecting rod, connecting rod is arranged with limiting plate near holddown groove notch place, the diameter of limiting plate is greater than the notch diameter of holddown groove, is provided with the fixture of fixed connecting rod between back-moving spring and limiting plate; The other end of connecting rod is connected with the afterbody of collet; Holddown groove both sides in sleeve are provided with centrifugal take-up device, centrifugal take-up device comprises centrifugal-block, pull bar, stop collar, centrifugal-block is located at holddown groove both sides and is left gap between centrifugal-block and sleeve, pull bar one end connects centrifugal-block, the pull bar other end connects stop collar afterbody, stop collar is sheathed on that collet is outer and the head inwall of stop collar is bellmouth, and the diameter of the close minor axis end side of bellmouth is less than opposite side diameter.
Adopt the centrifugal stationary fixture for turning of technical solutions of the utility model, comprise sleeve, back-moving spring, connecting rod and collet, one end diameter of sleeve is greater than other end diameter, one end of diameter length is major diameter end, the short one end of diameter is minor axis end, and the end of minor axis end is axially arranged with through hole; Sleeve is used for limiting and protective effect, for holding chuck in the through hole of minor axis end, and clamping work pieces.Major diameter end side in sleeve is provided with towards minor axis end opening and holds the holddown groove of back-moving spring, and one end of back-moving spring is connected and fixed the bottom of groove; Back-moving spring in holddown groove plays reset role.The other end of back-moving spring is connected with connecting rod, and connecting rod is arranged with limiting plate near holddown groove notch place, and the diameter of limiting plate is greater than the notch diameter of holddown groove; Limiting plate is located at the notch place of holddown groove, avoids back-moving spring excess compression, for the protection of back-moving spring.The other end of connecting rod is connected with the afterbody of collet; Connecting rod due to back-moving spring compression or flick, thus drive collet move vertically.Holddown groove both sides in sleeve are provided with centrifugal take-up device, centrifugal take-up device comprises centrifugal-block, pull bar, stop collar, centrifugal-block is located at holddown groove both sides and is left gap between centrifugal-block and sleeve, pull bar one end connects centrifugal-block, the pull bar other end connects stop collar afterbody, stop collar is sheathed on that collet is outer and the head inwall of stop collar is bellmouth, and the diameter of the close minor axis end side of bellmouth is less than opposite side diameter; Centrifugal take-up device provides the clamping power resources of collet, centrifugal-block is along with the rotation generation centrifugal force of sleeve, centrifugal-block moves and is against sleeve lining outside sleeve, and pull bar to move to sleeve wall place due to centrifugal-block and then pulls stop collar axially to move to major diameter end side; The diameter of the close minor axis end side of bellmouth is less than opposite side diameter, stop collar moves to major diameter end, thus make stop collar and collet produce relative displacement, by the bellmouth of stop collar by collet radial contraction, thus will the Workpiece clamping of collet be positioned at.The fixture of fixed connecting rod is provided with between back-moving spring and limiting plate; Fixture is used for being fixed during Workpiece clamping the position of back-moving spring when centrifugal, avoids when centrifugal force changes, the clamping effect of back-moving spring influence elastane chuck.
Operation principle of the present utility model and beneficial effect are: utilize the axial line turnbarrel around sleeve, now, due to the effect of centrifugal force, centrifugal-block outwards throws away, offset with the inwall of sleeve, while throwing away, centrifugal-block gives pull bar oblique outer pulling force, pull pull bar to move axially, thus pull bar drive stop collar axially to move to sleeve major diameter end; While stop collar movement, head inwall due to stop collar is bellmouth, the diameter of the close minor axis end side of bellmouth is less than opposite side diameter, stop collar moves to major diameter end, and then the little side of the diameter of bellmouth is moved to major diameter end, thus collet is subject to the pressure that the little one end of bellmouth diameter gives, and makes its radial contraction by while collet axial tension, thus the Workpiece clamping of collet will be positioned at; Simultaneously, collet moves to major diameter end side, and connecting rod transmission of pressure makes back-moving spring compress, and limiting plate and holddown groove end offset, thus avoid back-moving spring excess compression, back-moving spring is fixed by the fixture between back-moving spring and limiting plate.When centrifugal force disappears, on the contrary, centrifugal-block returns to original position, pushing drawing rod, and then promotes stop collar, stop collar moves to minor axis end, stop collar gives the distress resolves of collet, and the collet of stop collar promotion simultaneously moves to minor axis end, and the ejection of fixture is recovered original position by the elastic force of back-moving spring, collet radial direction is opened, and is unclamped by workpiece.Because circular cone must could realize collet clamping work pieces by means of centrifugal force, therefore, it can rotate processing work with main shaft simultaneously, clamped while processing work, thus the fixture avoiding moment of torsion to bring damage, and make the gap between part consistent due to centrifugal, fix to clamp effect excellent, gap change between the part avoiding rotation of the prior art to bring, thus avoid the gap between part to change the weak effect that is fixedly clamped caused.
Further, described fixture comprises the fixed head be sheathed on pull bar, and the outer wall of fixed head is provided with external screw thread, and the notch place inwall of described holddown groove is provided with internal thread, and the outer wall of fixed head matches with the internal thread at notch place.The external screw thread of fixed head is due to turning effort, by in the internal thread screwing into holddown groove notch of fixed head, thus back-moving spring is tentatively fixing, even if centrifugal force reduces, fixed head is also positioned at screw thread, avoids ensureing that back-moving spring resets immediately and makes the event resolves that is fixedly clamped of collet; By means of centrifugal rotation fixed reset spring, easy to operate.
Further, sleeve lining and the adjacent centrifugal-block sidewall of described centrifugal-block both sides match; Pull bar is brace and pull bar is drawn close to connecting rod; The sleeve lining adjacent with pull bar is inclined-plane.Sleeve lining and the adjacent centrifugal-block sidewall of described centrifugal-block both sides match, and when ensureing centrifugal, the outer wall of sleeve lining and centrifugal-block is fitted stable; Pull bar is brace and pull bar is drawn close to connecting rod, and brace is that inclined-plane pulls stop collar along the sleeve lining adjacent with pull bar, and the balance of power of brace is stablized.
Further, the outer wall of described collet is the inclined-plane matched with the bellmouth of stop collar head.Stop collar and collet are that face contacts, and stop collar slides along collet outer wall, and face contact slide is more stable, damages less.
Further, major diameter end side and the minor axis end side of described sleeve are with bolts.Sleeve adopts major diameter end and minor axis end to be spliced, and the dismounting of minor axis end directly can be cancelled the pressure that stop collar gives collet, unclamp workpiece, and be beneficial to the stop collar minor axis end changing different size bellmouth.
Further, also include main shaft, the major diameter end spindle thread of described sleeve connects.Main shaft rotarily drives sleeve rotating and produces centrifugal force, is threaded and is convenient for changing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
The schematic diagram of Fig. 1 embodiment when to be the utility model unclamp workpiece for the centrifugal stationary fixture of turning;
Fig. 2 is the sectional schematic diagram of A-A in Fig. 1;
Fig. 3 is the right view of Fig. 1;
Schematic diagram when Fig. 4 is the utility model clamping work pieces.
Detailed description of the invention
As shown in Figure 1, 2, the utility model is used for the centrifugal stationary fixture of turning, comprise sleeve 1, back-moving spring 2, connecting rod 3 and collet 4, collet 4 comprise holder and be mounted on holder and between leave the jaw in gap, one end diameter of sleeve 1 is greater than other end diameter, and the long one end of diameter is major diameter end 5, the short one end of diameter is minor axis end 6, and the end of minor axis end 6 is axially arranged with through hole, major diameter end 5 side in sleeve 1 is provided with towards minor axis end 6 opening and holds the holddown groove 7 of back-moving spring 2, back-moving spring 2 is stage clip, one end of back-moving spring 2 is connected and fixed the bottom of groove 7, the other end of back-moving spring 2 is connected with connecting rod 3, connecting rod 3 is arranged with limiting plate 8 near holddown groove 7 notch place, limiting plate 8 is circular slab, and the diameter of limiting plate 8 is greater than the notch diameter of holddown groove 7, the other end of connecting rod 3 is connected with the afterbody of collet 4, and be provided with externally threaded fixed head 9 between back-moving spring 2 and limiting plate 8, there is internal thread at the notch place of holddown groove 7, and the external screw thread of fixed head 9 matches with the internal thread of holddown groove, holddown groove 7 both sides in sleeve 1 are provided with centrifugal-block 10, as shown in Figure 3: centrifugal-block 10 is provided with six, and radially arrange, each centrifugal-block 10 is located at holddown groove 7 both sides and is left gap between centrifugal-block 10 and sleeve 1, pull bar 11 one end connects centrifugal-block 10, pull bar 11 other end is connected with stop collar 12 afterbody, stop collar 12 is sheathed on that collet 4 is outer and the head inwall of stop collar 12 is bellmouth 13, the diameter of close minor axis end 6 side of bellmouth 13 is less than opposite side diameter, the outer wall of collet 4 is the inclined-plane matched with the bellmouth 13 of stop collar 12 head, sleeve 1 and centrifugal-block 10 adjacent are for keep straight on, and pull bar 11 is brace and pull bar 11 is drawn close to connecting rod 3, and sleeve 1 is made up of two parts and bolt connects, main shaft is threaded with the major diameter end of sleeve 1.
In specific implementation process, as shown in Figure 4, work as rotary main shaft, main shaft band moving sleeve 1 rotates, produce centrifugal force, thus centrifugal-block 10 is outwards got rid of, outer wall to sleeve 1 is pressed close to, thus centrifugal-block 10 pulls pull bar 11, drives stop collar 12 to move to major diameter end 5, thus stop collar 12 gives collet 4 extruding force, make collet 12 radial clamping, meanwhile, limiting plate 8 offsets with the notch of holddown groove 7, fixed head 9 along with centrifugal force along holddown groove 7 notch place internal thread rotate collet 12 is tentatively fixing, Workpiece clamping is fixed.When centrifugal centrifugal force disappears, because fixed head 9 is still fixed in screw thread, therefore still by Workpiece clamping, when unclamping workpiece, only need rotary main shaft in the other direction, fixed head 9 reverse rotation place holddown groove 7, connecting rod 3 flicks by back-moving spring 2, thus push collet 4 to minor axis end 6, thus depart from extruding force, unclamp workpiece.
For a person skilled in the art; under the prerequisite not departing from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (6)
1. for the centrifugal stationary fixture of turning, it is characterized in that: comprise sleeve, back-moving spring, connecting rod and collet, one end diameter of sleeve is greater than other end diameter, and one end of diameter length is major diameter end, the short one end of diameter is minor axis end, and the end of minor axis end is axially arranged with through hole; Major diameter end side in sleeve is provided with towards minor axis end opening and holds the holddown groove of back-moving spring, one end of back-moving spring is connected and fixed the bottom of groove, the other end of back-moving spring is connected with connecting rod, connecting rod is arranged with limiting plate near holddown groove notch place, the diameter of limiting plate is greater than the notch diameter of holddown groove, is provided with the fixture of fixed connecting rod between back-moving spring and limiting plate; The other end of connecting rod is connected with the afterbody of collet; Holddown groove both sides in sleeve are provided with centrifugal take-up device, centrifugal take-up device comprises centrifugal-block, pull bar, stop collar, centrifugal-block is located at holddown groove both sides and is left gap between centrifugal-block and sleeve, pull bar one end connects centrifugal-block, the pull bar other end connects stop collar afterbody, stop collar is sheathed on that collet is outer and the head inwall of stop collar is bellmouth, and the diameter of the close minor axis end side of bellmouth is less than opposite side diameter.
2. as claimed in claim 1 for the centrifugal stationary fixture of turning, it is characterized in that: described fixture comprises the fixed head be sheathed on pull bar, the outer wall of fixed head is provided with external screw thread, the notch place inwall of described holddown groove is provided with internal thread, and the outer wall of fixed head matches with the internal thread at notch place.
3. as claimed in claim 2 for the centrifugal stationary fixture of turning, it is characterized in that: sleeve lining and the adjacent centrifugal-block sidewall of described centrifugal-block both sides match; Pull bar is brace and pull bar is drawn close to connecting rod; The sleeve lining adjacent with pull bar is inclined-plane.
4. as claimed in claim 3 for the centrifugal stationary fixture of turning, it is characterized in that: the outer wall of described collet is the inclined-plane matched with the bellmouth of stop collar head.
5. as claimed in claim 4 for the centrifugal stationary fixture of turning, it is characterized in that: major diameter end side and the minor axis end side of described sleeve are with bolts.
6. as claimed in claim 5 for the centrifugal stationary fixture of turning, it is characterized in that: also include main shaft, the major diameter end spindle thread of described sleeve connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590268.0U CN204195350U (en) | 2014-10-14 | 2014-10-14 | For the centrifugal stationary fixture of turning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590268.0U CN204195350U (en) | 2014-10-14 | 2014-10-14 | For the centrifugal stationary fixture of turning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204195350U true CN204195350U (en) | 2015-03-11 |
Family
ID=52653349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420590268.0U Expired - Fee Related CN204195350U (en) | 2014-10-14 | 2014-10-14 | For the centrifugal stationary fixture of turning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204195350U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743467A (en) * | 2020-12-08 | 2021-05-04 | 上海航天设备制造总厂有限公司 | Centrifugal clamping device and method for rotating process step |
| CN112756644A (en) * | 2020-12-25 | 2021-05-07 | 沈阳工程学院 | Spring chuck clamping mechanism of numerically controlled lathe |
-
2014
- 2014-10-14 CN CN201420590268.0U patent/CN204195350U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743467A (en) * | 2020-12-08 | 2021-05-04 | 上海航天设备制造总厂有限公司 | Centrifugal clamping device and method for rotating process step |
| CN112756644A (en) * | 2020-12-25 | 2021-05-07 | 沈阳工程学院 | Spring chuck clamping mechanism of numerically controlled lathe |
| CN112756644B (en) * | 2020-12-25 | 2022-02-18 | 沈阳工程学院 | Spring chuck clamping mechanism of numerically controlled lathe |
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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: 20150311 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |