CN110076365B - Centrifugal anchor clamps of axle type - Google Patents
Centrifugal anchor clamps of axle type Download PDFInfo
- Publication number
- CN110076365B CN110076365B CN201910374020.8A CN201910374020A CN110076365B CN 110076365 B CN110076365 B CN 110076365B CN 201910374020 A CN201910374020 A CN 201910374020A CN 110076365 B CN110076365 B CN 110076365B
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- sliding seat
- groove
- seat
- shaft
- annular
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- 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
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/14—Chucks with simultaneously-acting jaws, whether or not also individually adjustable involving the use of centrifugal force
Abstract
The invention discloses a shaft type centrifugal clamp which comprises a chuck, a rotating tip, a jaw mechanism, a sliding seat and an annular fixed seat. And an annular fixed seat is arranged on the fixed groove of the faceplate, and the sliding seat is sleeved in the annular fixed seat. The workpiece is firstly rotated between the centers on the rotating center and the lathe tailstock front and back, when the chuck rotates, the annular fixing seat can be driven to rotate, the sliding seat rotates relative to the annular fixing seat, meanwhile, the clamping jaw mechanism arranged on the sliding seat is centrifugally rotated, and then the workpieces are fastened by the clamping jaws under the action of centrifugal force, so that the purpose of clamping and fixing the workpieces is achieved. When the lathe spindle stops rotating, the extruded reset spring can stretch the sliding seat along the reverse direction of the annular reset groove, so that the clamping jaws reversely rotate to separate the workpiece, people can take down the workpiece conveniently, and the time for clamping the workpiece is saved.
Description
Technical Field
The invention relates to the field of machinery, in particular to a shaft type centrifugal clamp.
Background
When the lathe is used for machining shaft parts, more auxiliary time needs to be consumed for clamping the parts, the labor time of workers is increased, manual errors are easily caused for manually clamping the parts, namely, the deviation is caused to the coaxiality of the excircle and the central hole of the workpiece, and the precision of the workpiece is influenced.
Disclosure of Invention
Therefore, an axial centrifugal clamp needs to be provided for solving the problem that the existing lathe is time-consuming in clamping workpieces.
In order to achieve the purpose, the inventor provides a shaft centrifugal clamp which comprises a disc chuck, a rotating tip, a jaw mechanism, a sliding seat and an annular fixed seat; one end of the flower disc is provided with a connecting groove, the other end of the flower disc is provided with a fixed groove, a tapered hole is formed between the connecting groove and the fixed groove, the rotating tip is arranged in the tapered hole, the annular fixed seat is sleeved in the fixed groove of the flower disc, the sliding seat is of a hollow structure, and the stepped end of the sliding seat is rotatably sleeved in the fixed groove; the utility model discloses a clamping jaw mechanism, including the clamping jaw mechanism, the clamping jaw mechanism is provided with more than three, the terminal surface of slide is provided with the station groove, is provided with more than three clamping jaw groove on the cell wall in station groove, clamping jaw mechanism includes jack catch and connecting axle, the middle part of jack catch is provided with a plurality of through-holes, the connecting axle is used for passing any through-hole of jack catch and fixes on the slide, the connecting axle is used for fixing the rotatable fixing on the slide of jack catch, and the circular array of clamping jaw mechanism more than three sets up on the slide, be provided with the annular groove that resets on the terminal surface of slide and/or annular fixing base, reset spring sets up at the annular inslot that resets, reset spring's one end sets up on the.
Further, a shaft shoulder is arranged at one end of the faceplate, and a plurality of threaded holes are formed in the circumferential array of the shaft shoulder.
Further, the fixing bolt is used for penetrating through the threaded hole in the shaft shoulder to fix the chuck on a main shaft of the lathe.
Furthermore, a limiting groove is formed in the sliding seat and is located on the side face, facing the annular fixing seat, of the sliding seat after the sliding seat and the annular fixing seat are assembled.
Furthermore, the limiting device further comprises a limiting unit, wherein the limiting unit is arranged on the annular fixing seat and is used for being mutually embedded with the limiting groove to limit the sliding seat to rotate.
Furthermore, the limiting unit comprises a compression spring and a steel ball, a limiting cavity is formed in the annular fixing seat, the compression spring is arranged in the limiting cavity, and the steel ball is arranged between the compression spring and a cavity opening of the limiting cavity.
Furthermore, the terminal surface of slide is provided with a plurality of round pin holes, and a plurality of round pin holes are equidistant to be located one side of through-hole.
Furthermore, a through hole is formed in the middle of the clamping jaw, and the connecting shaft penetrates through the through hole to be arranged on the sliding seat.
Furthermore, the two ends of the clamping jaw are inclined arc surfaces, the inclined arc surfaces at the two ends are symmetrically arranged along the origin of the central point of the clamping jaw, and the inclined arc surfaces are provided with the mesh grooves.
Different from the prior art, the above technical scheme uses the disc chuck to be fixed on the main shaft of the lathe, so that the disc chuck can rotate together according to the main shaft of the lathe. An annular fixing seat is installed on a fixing groove of the faceplate, the sliding seat is arranged in a central hole of the annular fixing seat through a stepped end sleeve, and the sliding seat can rotate relative to the annular fixing seat. When processing, with the work piece before back through rotating between the top on top and the lathe tailstock, when the flower disc rotates, can drive annular fixing base and rotate, and the slide then rotates for annular fixing base, carries out the centrifugation to installing jaw mechanism on the slide simultaneously and rotates, and then makes a plurality of clamping jaws under the effect of centrifugal force, the terminal surface and the work piece contact fastening of a plurality of clamping jaws reach the purpose of pressing from both sides tight fixed work piece. When the lathe spindle stops rotating, the extruded reset spring can stretch the sliding seat along the annular reset groove in the direction, so that the clamping jaws reversely rotate to separate the workpieces, the workpieces can be conveniently taken down by people, and the time for clamping the workpieces is saved.
Drawings
FIG. 1 is a block diagram of a shaft based centrifugal jig according to an embodiment;
FIG. 2 is a front view of an embodiment of a shaft based centrifugal clamp;
FIG. 3 is a cross-sectional view of an embodiment of a shaft based centrifugal clamp;
FIG. 4 is a schematic diagram of a slide of an embodiment of a shaft based centrifugal jig;
FIG. 5 is a partial cross-sectional view of an embodiment of a shaft based centrifugal clamp;
fig. 6 is a schematic view of a jaw of a shaft-type centrifugal jig according to an embodiment.
Description of reference numerals:
10. a flower disc; 11. connecting grooves; 12. a shaft shoulder; 13. a tapered hole; 14. fixing grooves;
121. a threaded hole; 122. fixing the bolt;
20. rotating the centre;
30. a jaw mechanism; 31. a claw; 32. a through hole; 33. a connecting shaft;
34. an inclined arc surface; 35. a mesh groove;
40. a slide base; 41. an annular reset groove; 42. a return spring; 43. a limiting groove;
44. a jaw slot; 45. a pin hole; 46. a pin;
50. an annular fixed seat; 51. a limiting cavity;
60. a limiting unit; 61. a compression spring; 62. steel balls;
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 6, the present embodiment provides a shaft-type centrifugal clamp, which includes a faceplate 10, a rotating tip 20, a jaw mechanism 30, a sliding seat 40, and an annular fixing seat 50. The whole body of the faceplate is of a hollow structure, shaft shoulders are arranged at two ends of the faceplate, a connecting groove 11 is formed in one end of the faceplate and is used for being sleeved with a spindle of a lathe, and a threaded hole 121 is formed in the shaft shoulder 12 at one end of the connecting groove, so that a plurality of threaded holes are circumferentially arrayed in the shaft shoulder at one end of the connecting groove, the faceplate is locked on the spindle of the lathe through a fixing bolt 122, and the fixing bolt can be a double-head bolt in the embodiment, so that people can conveniently lock the faceplate.
As shown in fig. 3, in order to maintain the coaxiality of the workpieces, a tapered hole 13 is formed in the middle of the chuck, and the tapered hole is formed from the end of the connecting groove to the end of the fixing groove from small to large, so that when the workpieces abut against the rotating center, the rotating center cannot move axially, namely, the rotating center is matched with the center on the lathe tailstock to fix the center hole of the shaft workpiece and bear the feeding resistance generated during cutting, so that the rotating center of the shaft workpiece and the main shaft of the machine tool keep consistent and synchronous rotation, and the coaxiality of the excircle and the center hole of the shaft workpiece to be processed is ensured. Therefore, when a workpiece is machined, the machining accuracy can be improved.
The other end face of the flower disc is provided with a fixed groove 14, an annular fixed seat is fixedly installed on the fixed groove, the annular fixed seat is of a lantern ring structure and used for sleeving the sliding seat and the fixed groove, a slotted hole can be formed in the annular face of the annular fixed seat, the purpose of connecting and locking the sliding seat is achieved, and the sliding seat can be conveniently installed through the annular fixed seat, and the abrasion of the flower disc is reduced. Specifically, the annular fixing seat can be fixed in a fixing groove in an interference fit or bolt locking mode. The sliding seat is of a hollow structure, and the diameter of a central hole of the sliding seat is larger than that of the rotating center, so that the whole rotating center can penetrate through the central hole of the sliding seat, and the rotating center can be conveniently installed in the disc chuck. The outer end of the sliding seat is provided with a step structure, and the other end of the outer part of the sliding seat is provided with a station groove. Establish on the hole of annular fixing base through the ladder structure cover, through installing the ball between grooved rail and spout, perhaps set up the grooved rail at the centre bore inner wall of annular fixing base, and serve at the less diameter of slide and set up a spout, use grooved rail and spout to make and can rotate relatively between slide and the annular fixing base, reach the slide and can rotate the purpose for annular fixing base, and then the jack catch that drives the jack catch mechanism on the slide carries out the effect of centrifugal force clamping.
The end with the larger diameter of the sliding seat is used for installing the jaw mechanisms, in the embodiment, the number of the jaws 31 of the jaw mechanisms is three, and the middle parts of the jaws are provided with a plurality of through holes 32, so that the diameters of the jaws for clamping workpieces can be adjusted by fixing the through holes at different positions through the connecting shaft, and the centrifugal force of the jaws rotating along with the lathe spindle can be changed. And for the connecting shaft installed on the sliding seat, the connecting shaft can be positioned on the circular arc of the same circle, and the center of the circle coincides with the central axis of the sliding seat, so that the clamping force of the three clamping jaws is the same, and the coaxiality of the shaft type workpiece is improved.
When three jaws are fixed on the outer end face of the sliding seat through a connecting shaft 33 respectively, one end of each jaw is located in a jaw groove 44, so that when the three jaws rotate along with a lathe spindle in a centrifugal mode, mutual collision between the jaws cannot happen, a pin 46 is fixed through a pin hole 45 in the end face of the sliding seat, the movable range of the jaws is limited, the jaws are located between the pin and the side walls of the jaw grooves, the same clamping force is kept when the three jaws clamp shaft workpieces, the situation that damage occurs due to overlarge clamping force of a certain clamping jaw is avoided, or the situation that coaxiality of the shaft workpieces deviates due to the fact that the clamping force between the clamping jaws is different is avoided. Namely, the end surface of the sliding seat faces the outer side of the flower disc fixing groove, and the surface of the sliding seat opposite to the annular fixing seat is an inner end surface. The jack catch can rotate for the connecting axle, and sets up an slope cambered surface 34 on two terminal surfaces of jack catch, consequently when the flower disc is along with the high-speed rotatory time of lathe main shaft, the jack catch on the slide can follow the rotation and produce great centrifugal force for the jack catch can be along with slew velocity faster to axle type work piece clamp force big more, and the jack catch can not take place with axle type work piece the condition emergence that breaks away from when processing, has guaranteed the security and the stability of processing. The shaft workpiece fixed between the rotating center and the center of the lathe tailstock is automatically clamped, so that the cutting resistance generated during cutting is overcome, meanwhile, the manual locking process of the traditional three-jaw chuck is avoided, the auxiliary time is shortened, and the working efficiency of people is improved.
And when the lathe spindle stops rotating, the workpiece can be automatically loosened. Specifically, an annular reset groove 41 is formed in the inner surface of the sliding seat, or an annular reset groove is formed in the end surface, facing the sliding seat, of the annular fixed seat, or annular reset grooves are formed in the inner surface of the sliding seat and the end surface, facing the sliding seat, of the annular fixed seat, and a reset spring 42 is installed on the annular reset groove, one end of the reset spring is fixed on the sliding seat, and the other end of the reset spring is fixed on the annular fixed seat. Consequently, when the slide rotated for annular fixing base, can extrude reset spring, so still there is moment of inertia when lathe main shaft stops rotating after, consequently very difficult faster axle class work piece of loosening can stretch the slide through reset spring, and then drives the jack catch on the slide and carry out faster reset and loosen the work piece to improve the efficiency of processing.
In order to increase the friction between the shaft-like workpiece and the jaws, a screen groove 35 is provided on the end faces of the jaws. Simultaneously, in order to prolong the service life of the clamping jaw, the two ends of the clamping jaw are arranged in a centrosymmetric or symmetric manner, so that the other end of the clamping jaw can be replaced for use after one end of the clamping jaw is damaged, and the use cost of the clamping jaw is reduced.
The limiting unit 60 is further provided in the embodiment, and is used for limiting the swing angle range of the clamping jaw, namely when the clamping jaw rotates to the angle limit, the limiting unit locks the sliding seat, so that the sliding seat cannot rotate relative to the annular fixed seat, one end of the clamping jaw abuts against and is clamped on the shaft workpiece, and the other end of the clamping jaw is fixed on the flower disc at one end with the larger diameter of the sliding seat due to the stop rotation of the sliding seat. The limiting unit comprises a compression spring 61 and a steel ball 62, since the three clamping jaws can be pivoted about their respective connecting shafts fixed to the carriage and clamp the workpiece by centrifugal force. Therefore, the positioning pin can be installed on the annular fixing seat in an interference mode, so that the swinging angles of the three clamping jaws are limited to be the same, the clamping force of the three clamping jaws is kept consistent, the workpiece is clamped uniformly, and the swinging angles of the clamping jaws are limited through the limiting unit. Specifically, a plurality of limiting cavities are formed in the annular fixing seat in a circumferential array mode, the limiting cavities are located between the annular reset groove and the outer side face of the annular fixing seat, the steel balls are placed at the cavity openings of the limiting cavities, then the compression springs are installed in the limiting cavities, and the limiting cavities are sealed and locked, so that the compression springs are installed in the limiting cavities. And have a spacing groove 43 on the medial surface of the spacing cavity of slide for annular fixing base, this spacing groove can have 120 degrees nest grooves for an opening, when the nest groove of slide slides to spacing unit department, compression spring jack-up steel ball embedding nest inslot for the slide no longer removes, reaches spacing purpose.
In the embodiment, the spindle of the lathe is used for processing the shaft parts through high-speed rotation, so that the protective cover is arranged on the chuck and can be of a two-half structure, the protective cover is conveniently locked on the chuck, the clamping jaws at the sliding seat are protected through the protective cover, and the processing safety is improved. The protection cover can be fixed on the chuck table by using screws, so that the purpose that the slide seat, the clamping jaw, the annular fixing seat and the like are protected in the protection cover is achieved, the parts and fragments which splash when the clamping jaw is damaged or the faults happen are prevented from causing harm to the human body, and the safety of the centrifugal clamp is improved.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (8)
1. The utility model provides an axle type centrifugal jig which characterized in that: comprises a faceplate, a rotating centre, a jaw mechanism, a sliding seat and an annular fixed seat;
one end of the flower disc is provided with a connecting groove, the other end of the flower disc is provided with a fixing groove, a tapered hole is formed between the connecting groove and the fixing groove, the rotating tip is arranged in the tapered hole, the annular fixing seat is sleeved in the fixing groove of the flower disc, the sliding seat is of a hollow structure, and the stepped end of the sliding seat is rotatably sleeved on an inner hole of the annular fixing seat;
the clamping jaw mechanism is provided with more than three clamping jaw mechanisms, the end surface of the sliding seat is provided with a station groove, the groove wall of the station groove is provided with more than three clamping jaw grooves,
the clamping jaw mechanism comprises a clamping jaw and a connecting shaft, a plurality of through holes are formed in the middle of the clamping jaw, the connecting shaft is used for penetrating through any through hole of the clamping jaw and fixing the through hole on the sliding seat, the connecting shaft is used for rotatably fixing the clamping jaw on the sliding seat, more than three clamping jaw mechanisms are arranged on the sliding seat in a circumferential array mode, and one end of the clamping jaw is located in a clamping jaw groove;
the end face of the sliding seat and/or the annular fixing seat is provided with an annular reset groove, the reset spring is arranged in the annular reset groove, one end of the reset spring is arranged on the sliding seat, and the other end of the reset spring is arranged on the annular fixing seat.
2. The shaft-type centrifugal clamp of claim 1, wherein: one end of the faceplate is provided with a shaft shoulder, and a plurality of threaded holes are formed in the circumferential array of the shaft shoulder.
3. The shaft-type centrifugal jig of claim 2, wherein: the fixture further comprises a fixing bolt, and the fixing bolt is used for penetrating through the threaded hole in the shaft shoulder to fix the disc chuck on a main shaft of the lathe.
4. The shaft-type centrifugal clamp of claim 1, wherein: the sliding seat is provided with a limiting groove, and the limiting groove is positioned on the side surface of the sliding seat facing the annular fixing seat after the sliding seat and the annular fixing seat are assembled.
5. The shaft-type centrifugal clamp of claim 4, wherein: the limiting unit is arranged on the annular fixing seat and is used for being embedded with the limiting groove to limit the sliding seat to rotate.
6. The shaft-type centrifugal clamp of claim 5, wherein: the limiting unit comprises a compression spring and a steel ball, a limiting cavity is formed in the annular fixing seat, the compression spring is arranged in the limiting cavity, and the steel ball is arranged between the compression spring and a cavity opening of the limiting cavity.
7. The shaft-type centrifugal clamp of claim 1, wherein: the middle part of the clamping jaw is provided with a through hole, and the connecting shaft penetrates through the through hole to be arranged on the sliding seat.
8. The shaft-type centrifugal clamp of claim 1, wherein: the both ends of jack catch are the slope cambered surface, the slope cambered surface at both ends sets up along jack catch central point initial point symmetry, be provided with the net grain groove on the slope cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374020.8A CN110076365B (en) | 2019-05-07 | 2019-05-07 | Centrifugal anchor clamps of axle type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374020.8A CN110076365B (en) | 2019-05-07 | 2019-05-07 | Centrifugal anchor clamps of axle type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110076365A CN110076365A (en) | 2019-08-02 |
| CN110076365B true CN110076365B (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910374020.8A Active CN110076365B (en) | 2019-05-07 | 2019-05-07 | Centrifugal anchor clamps of axle type |
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| Country | Link |
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| CN (1) | CN110076365B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118822B (en) * | 2021-04-21 | 2022-03-29 | 宁波迈科隆精密机械制造有限公司 | CNC numerical control lathe axle type work piece adds clamping apparatus |
| CN115121819B (en) * | 2022-09-02 | 2022-11-04 | 溧阳市兴达机械有限公司 | Heating roller machining lathe |
| CN115673365B (en) * | 2022-12-30 | 2023-04-07 | 江苏创一精锻有限公司 | CNC numerical control lathe axle type work piece adds clamping apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH277746A (en) * | 1950-01-18 | 1951-09-15 | Fischer Ag Georg | Workpiece drivers for lathes. |
| FR2447546A1 (en) * | 1979-01-23 | 1980-08-22 | Muller & Cie Ets M | DEVICE FOR FIXING VEHICLE WHEELS ON A BALANCER |
| DE3204987C2 (en) * | 1982-02-12 | 1986-06-05 | Supfina Maschinenfabrik Hentzen GmbH & Co KG, 5630 Remscheid | Clamping device for small diameter disc-shaped workpieces |
| CN204504272U (en) * | 2015-04-08 | 2015-07-29 | 兰州工业学院 | Centrifugal Automatic-clamping scroll chuck |
| CN204867489U (en) * | 2015-06-03 | 2015-12-16 | 十堰方石汽车零部件有限公司 | Three -jaw centrifugal chuck with adjustable |
| CN105499621B (en) * | 2016-01-11 | 2018-09-28 | 贵阳志源机械产品开发有限公司 | Centrifugal automatic chuck |
| CN207013743U (en) * | 2017-07-11 | 2018-02-16 | 江门江菱电机电气有限公司 | A kind of lathe automatic chuck device |
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2019
- 2019-05-07 CN CN201910374020.8A patent/CN110076365B/en active Active
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