CN110814942A - Automatic clamping driving device for large-size workpieces - Google Patents
Automatic clamping driving device for large-size workpieces Download PDFInfo
- Publication number
- CN110814942A CN110814942A CN201911133335.XA CN201911133335A CN110814942A CN 110814942 A CN110814942 A CN 110814942A CN 201911133335 A CN201911133335 A CN 201911133335A CN 110814942 A CN110814942 A CN 110814942A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- ring
- workpiece
- middle sleeve
- pawl
- 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
Links
Images
Classifications
-
- 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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- 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
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Abstract
The invention relates to an automatic clamping driving device for large-size workpieces.A centre is fixedly connected with an inner sleeve, the inner sleeve is connected with a middle sleeve and an outer sleeve sequentially through a needle bearing, the inner end of the outer sleeve is connected with a driving plate and a headstock through a driving ring and a driving lever, and the outer end of the outer sleeve is connected with a front outer ring through an outer ring to rotate together; the outer end of the middle sleeve is fixedly connected with a nut and is fixedly connected with the front inner ring through a floating ring to rotate together; a spring is connected between the outer sleeve and the middle sleeve, the outer sleeve and the middle sleeve are linked by the spring, a pawl is rotatably connected on the inner sleeve through a pin shaft, the pawl is matched and connected with a ratchet wheel of the middle sleeve, and the pawl can move unidirectionally along with the ratchet wheel of the middle sleeve; and a clamping piece is connected between the front inner ring and the front outer ring, and the clamping piece rotates along with the outer sleeve and the inner sleeve through the pawl and the ratchet wheel of the middle sleeve in a forward rotation or reverse rotation manner by the headstock so as to drive the workpiece or loosen the workpiece. The invention has simple structure, easy realization and high reliability, and can be used for the automatic clamping driving of workpieces in high-efficiency processing.
Description
Technical Field
The invention relates to a workpiece driving device, in particular to an automatic clamping driving device which is suitable for a numerical control special grinding machine for large-specification shaft precision machining.
Background
Along with the continuous development of various social fields, the requirements on the machining field are continuously improved, the three-high machining with high speed, high precision and high efficiency is the basic requirement on future machining, along with the continuous improvement of the automation degree of a numerical control grinding machine, the high-precision machining requirement of large-size shaft parts is continuously expanded, the traditional manual driving device cannot meet the requirement of the rapidly-developed numerical control grinding machine, and the automatic clamping driving device is a driving problem that the high-efficiency precision machining of large-size workpieces with complex shapes can be realized under the automatic numerical control machining condition.
Therefore, it is imperative to develop a safe and reliable automatic clamping driving device for large-scale workpieces as a core component of a high-precision numerical control grinding machine for large-scale shaft parts with complex shapes and high precision.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an automatic clamping driving device for large-size workpieces.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automatic clamping driving device for large-size workpieces comprises a driving plate, a driving rod, a driving ring, a tip, an inner sleeve, a middle sleeve, an outer sleeve, a floating ring, a front inner ring, a front outer ring and a clamping piece, wherein the inner sleeve is fixedly connected outside the tip, the inner sleeve is connected with the middle sleeve and the outer sleeve sequentially through a needle bearing, the inner end of the outer sleeve is connected with the driving plate and a headstock through the driving ring and the driving rod, and the outer end of the outer sleeve is connected with the front outer ring through the outer ring to rotate together; the outer end of the middle sleeve is fixedly connected with a nut and is fixedly connected with the front inner ring through a floating ring to rotate together; a spring is connected between the outer sleeve and the middle sleeve, the outer sleeve and the middle sleeve are linked by the spring, a pawl is rotatably connected on the inner sleeve through a pin shaft, the pawl is matched and connected with a ratchet wheel of the middle sleeve, and the pawl can move unidirectionally along with the ratchet wheel of the middle sleeve; and a clamping piece is connected between the front inner ring and the front outer ring, and the clamping piece rotates along with the outer sleeve and the inner sleeve through the pawl and the ratchet wheel of the middle sleeve in a forward rotation or reverse rotation manner by the headstock so as to drive the workpiece or loosen the workpiece.
Furthermore, the spring that overcoat and well cover are connected is the spring that has the pretightning force, can prevent that when the overcoat from rotating, well cover is not followed rotation.
Furthermore, one end of the clamping piece is rotatably connected with the front inner ring through a screw; the other end of the clamping piece is rotatably connected with the front outer ring through a screw.
Further, when the head frame rotates in the forward direction, the outer sleeve and the middle sleeve rotate together to drive the three clamping pieces to rotate, the three clamping pieces clamp the workpiece through friction force, and the workpiece is automatically driven to rotate.
Furthermore, a contactless signaling support is arranged on the drive plate and can be used for detecting the reversal angle of the workpiece.
Further, when the workpiece is ground, the headstock rotates reversely, the ratchet wheel of the middle sleeve is pressed by the pawl, the middle sleeve does not rotate along with the outer sleeve any more, and the clamping piece freely rotates around the screw fixed on the front outer ring, so that the workpiece is loosened.
Further, the needle bearing is hermetically connected between the outer sleeve and the middle sleeve; and the middle sleeve and the nut are both provided with sealing rings.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by additionally arranging the pawl ratchet wheel device, the workpiece can be automatically clamped and driven to rotate without electric and hydraulic control, so that the manufacturing cost of the machine tool is saved, and the internal space of the machine tool is saved. The problem of the drive of large-scale complicated axle class work piece in the numerically control grinder machine is solved, realize the automation, improve machining efficiency and machining precision.
Drawings
FIG. 1 is a front view of an automatic clamping driving device for large-sized workpieces according to the present invention;
FIG. 2 is a view of the automatic clamping driving device for large-sized workpieces in the direction of A of the present invention;
FIG. 3 is a cross-sectional view of the pawl-and-ratchet arrangement of the present invention;
fig. 4 is a structural sectional view of the spring device of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1 to 4, the automatic clamping driving device for large-size workpieces of the present invention comprises: the device comprises a dial plate 1, a deflector rod 2, a driving ring 3, an inner sleeve 4, an outer sleeve 5, a middle sleeve 6, a nut 7, a floating ring 8, an outer ring 9, a front inner ring 10, a front outer ring 11, a clamping piece 12, a screw 13, a pawl 14, a screw 15, a needle bearing 16, a needle bearing 17, a spring 18 and a signaling support 19.
When a workpiece is ground, the headstock rotates forwards to drive the driving plate 1, the driving plate 1 is provided with the driving rod 2, one end of the driving rod 2 is inserted into a groove of the driving ring 3 to drive the driving ring 3 to rotate together, the outer sleeve 5 is fixedly connected with the driving ring 3, the outer sleeve 5 is connected with the middle sleeve 6 through the needle bearing 16, one end of the spring 18 is fixed on the outer sleeve 5, the other end of the spring is fixed on the middle sleeve 6, as shown in fig. 4, the spring is pre-tightened to realize the linkage of the outer sleeve 5 and the middle sleeve 6, the middle sleeve 6 is connected with the inner sleeve 4 through the needle bearing 17, the inner sleeve 4 is fixed on a large tip which is adaptive to a positioning inner taper hole of the headstock through a set screw, and the pawl 14. The nut 7 is connected with the middle sleeve 6 through threads, the inside of the nut is sealed by an O-shaped ring, the outside shaft is fixed by a spring retainer ring, and the nut 7 rotates along with the middle sleeve 6. The outer ring 9 is fixedly connected with the outer sleeve 5, the floating ring 8 is fixedly connected with the middle sleeve 6, the front outer ring 11 is fixedly connected with the outer ring 9, the front inner ring 10 is fixedly connected with the floating ring 8 and rotates together, one end of the clamping piece 12 is fixed on the front outer ring 11 through a screw A13, the other end of the clamping piece is fixed on the front inner ring 10 through a screw B13, and when a workpiece is fed, the headstock is started, the clamping piece rotates, and the workpiece is automatically clamped and driven while self-centering is achieved. A contactless transmission support (19) is arranged on the dial 1 and can be used for detecting the reversal angle of the workpiece.
After the grinding of the workpiece is finished, the headstock rotates reversely, as shown in fig. 3, at this time, the pawl 14 abuts against the ratchet wheel part of the middle sleeve 6, the middle sleeve 6 does not rotate along with the outer sleeve 5 any more, the floating ring 8 and the front inner ring 10 do not rotate any more, and under the rotation action of the outer ring 11, the screw 13 can slide along the waist-shaped hole on the clamping piece 12 to push the clamping piece 12 to rotate around the screw connected with the front inner ring 10, so that the workpiece is automatically loosened, and the workpiece is blanked.
The invention has the advantages that the ratchet wheel device with the pawl is additionally arranged, so that the clamping sheet clamps a workpiece without being limited by the pawl when the ratchet wheel on the middle sleeve rotates forwards, and loosens the workpiece after being limited by the pawl when the ratchet wheel rotates backwards, the driving problem in the processing of large-scale shaft parts is realized, the structure is simple, and the reliability is high.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All structural equivalents made by using the contents of the specification and the drawings are included in the scope of the present invention.
Claims (7)
1. The utility model provides an automatic clamping drive arrangement of big specification work piece, includes driver plate (1), driving lever (2), drives ring (3), top, endotheca (4), well cover (6), overcoat (5), floating ring (8), preceding inner ring (10), preceding outer ring (11), presss from both sides tight piece (12), its characterized in that: the center is fixedly connected with an inner sleeve (4) outside, the inner sleeve (4) is connected with a middle sleeve (6) and an outer sleeve (5) sequentially through a needle bearing, the inner end of the outer sleeve (5) is connected with a driving plate (1) and a headstock through a driving ring (3) and a driving lever (2), and the outer end of the outer sleeve (5) is connected with a front outer ring (11) through an outer ring (9) to rotate together; the outer end of the middle sleeve (6) is fixedly connected with a nut (7) and is fixedly connected with a front inner ring (10) through a floating ring (8) to rotate together; a spring is connected between the outer sleeve (5) and the middle sleeve (6), the outer sleeve (5) and the middle sleeve (6) are linked by the spring, a pawl (14) is rotatably connected to the inner sleeve (4) through a pin shaft, the pawl (14) is matched and connected with a ratchet wheel of the middle sleeve (6), and the pawl (14) can move in a single direction along with the ratchet wheel of the middle sleeve (6); a clamping piece (12) is connected between the front inner ring (10) and the front outer ring (11), and the clamping piece (12) rotates forwards or backwards through the headstock to drive the workpiece or loosen the workpiece through the ratchet wheels of the pawl (14) and the middle sleeve (6) and the outer sleeve (5) and the inner sleeve (4) to rotate together.
2. The large format workpiece autoclaving actuator of claim 1, wherein: the spring that overcoat (5) and well cover (6) are connected is the spring that has the pretightning force, can prevent that when overcoat (5) is rotatory, well cover (6) do not follow the rotation.
3. The large format workpiece autoclaving actuator of claim 1, wherein: one end of the clamping piece (12) is rotatably connected with the front inner ring (10) through a screw (13); the other end of the clamping piece (12) is rotatably connected with the front outer ring (11) through a screw (13).
4. The large format workpiece autoclaving actuator of claim 1, wherein: when the headstock rotates in the positive direction, the outer sleeve (5) and the middle sleeve (6) rotate together to drive the three clamping pieces (12) to rotate, and the three clamping pieces (12) clamp the workpiece through friction force to automatically drive the workpiece to rotate.
5. The large format workpiece autoclaving actuator of claim 1, wherein: the dial (1) is provided with a contactless signaling support (19) which can be used for detecting the reversal angle of a workpiece.
6. The large format workpiece autoclaving actuator of claim 1, wherein: when the workpiece is ground, the headstock is reversely rotated, the pawl (14) abuts against the ratchet wheel of the middle sleeve (6), the middle sleeve (6) does not rotate along with the outer sleeve (5), and the clamping piece (12) freely rotates around the screw (13) fixed on the front outer ring (11), so that the workpiece is loosened.
7. The large format workpiece autoclaving actuator of claim 1, wherein: the needle bearing is hermetically connected between the outer sleeve (5) and the middle sleeve (6); and the middle sleeve (6) and the nut (7) are both provided with sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133335.XA CN110814942A (en) | 2019-11-19 | 2019-11-19 | Automatic clamping driving device for large-size workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133335.XA CN110814942A (en) | 2019-11-19 | 2019-11-19 | Automatic clamping driving device for large-size workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110814942A true CN110814942A (en) | 2020-02-21 |
Family
ID=69556686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911133335.XA Pending CN110814942A (en) | 2019-11-19 | 2019-11-19 | Automatic clamping driving device for large-size workpieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110814942A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1178728A (en) * | 1966-06-14 | 1970-01-21 | Dyncast Ltd | A Sliding Clasp Fastener Chain Forming Device |
| JPS57201170A (en) * | 1981-05-30 | 1982-12-09 | Kurosaki Refract Co Ltd | Mounting jig for grinding and forming bent pipe body made of ceramics |
| US4416570A (en) * | 1980-05-14 | 1983-11-22 | Argenbright Carl T | Precision work holder for machine tools |
| CN105196169A (en) * | 2014-06-25 | 2015-12-30 | 东莞市德威精密机械有限公司 | Tractor |
| CN105382276A (en) * | 2015-12-24 | 2016-03-09 | 成都铁马机车车辆实业有限公司 | Machining locking device for locomotive wheel |
| CN105881205A (en) * | 2016-05-28 | 2016-08-24 | 合肥华兴机器人有限公司 | Self-compensation type floating three-jaw power chuck for cylindrical grinding machine |
-
2019
- 2019-11-19 CN CN201911133335.XA patent/CN110814942A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1178728A (en) * | 1966-06-14 | 1970-01-21 | Dyncast Ltd | A Sliding Clasp Fastener Chain Forming Device |
| US4416570A (en) * | 1980-05-14 | 1983-11-22 | Argenbright Carl T | Precision work holder for machine tools |
| JPS57201170A (en) * | 1981-05-30 | 1982-12-09 | Kurosaki Refract Co Ltd | Mounting jig for grinding and forming bent pipe body made of ceramics |
| CN105196169A (en) * | 2014-06-25 | 2015-12-30 | 东莞市德威精密机械有限公司 | Tractor |
| CN105382276A (en) * | 2015-12-24 | 2016-03-09 | 成都铁马机车车辆实业有限公司 | Machining locking device for locomotive wheel |
| CN105881205A (en) * | 2016-05-28 | 2016-08-24 | 合肥华兴机器人有限公司 | Self-compensation type floating three-jaw power chuck for cylindrical grinding machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205271307U (en) | Welding position mechanism | |
| CN204235299U (en) | A kind of Novel dual head Digit Control Machine Tool | |
| CN209078780U (en) | The two-sided fixture of mechanical arm carried for gear | |
| CN103433818B (en) | A kind of work holder of axle cylindrical full-automatic grinding | |
| CN208663143U (en) | Brake head frock clamp | |
| CN202271199U (en) | Fixture clamp for broaching timing gear key groove on hydraulic broacher | |
| CN110814942A (en) | Automatic clamping driving device for large-size workpieces | |
| CN102528470B (en) | Double-sided right-angled milling head | |
| CN201922282U (en) | Tool for milling spline tooth on end face of flange yoke | |
| CN201493566U (en) | Fixture used for manufacturing chamfer angle of gear shaft | |
| CN103009118A (en) | Clamping device with both floating ends | |
| CN203495647U (en) | Automatic tool changing mechanism | |
| CN205271308U (en) | Axle and welding position frock of axle sleeve | |
| CN201423470Y (en) | Clamp for cutting high gravity alloy into three equal divisions | |
| CN204997618U (en) | Loose ware is torn open to screw wrenching tool , bolt and many bolt tightening tear loose ware open | |
| CN1695850A (en) | Dual rotation structure of core clamper | |
| CN206356922U (en) | A kind of novel servo device structure processes chuck | |
| CN202921944U (en) | Drilling indexing jig | |
| CN111922809A (en) | Automatic fixture equipment for eccentric shaft grinding of cylindrical grinding machine | |
| CN204818746U (en) | Pneumatic revolving stage of two mesas | |
| CN214109667U (en) | Self-centering quick alignment tool for large ring forging part | |
| CN110039336A (en) | A kind of diverter input and output axle assembly look in drilling pin pressing fixture | |
| CN217991059U (en) | Sliding sleeve milling tool | |
| CN201427192Y (en) | Chuck structure of three-jaw linkage heavy horizontal lathe | |
| CN215788638U (en) | Fixture for automatically processing outer diameter of grinding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
| RJ01 | Rejection of invention patent application after publication |