CN108788198B - Special fixture for processing radial holes of cam shaft - Google Patents
Special fixture for processing radial holes of cam shaft Download PDFInfo
- Publication number
- CN108788198B CN108788198B CN201810893413.5A CN201810893413A CN108788198B CN 108788198 B CN108788198 B CN 108788198B CN 201810893413 A CN201810893413 A CN 201810893413A CN 108788198 B CN108788198 B CN 108788198B
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- head end
- mounting seat
- bottom plate
- plate
- end mounting
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- 125000006850 spacer group Chemical group 0.000 claims 4
- 238000009434 installation Methods 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 108010015780 Viral Core Proteins Proteins 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/005—Tailstocks; Centres the centres being adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
- B23Q1/76—Steadies; Rests
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a special fixture for machining radial holes of a cam shaft, and belongs to the technical field of fixtures. The clamp solves the technical problems that an existing clamp for processing radial holes of a cam shaft is inconvenient to use and the like. The special fixture comprises a bottom plate, wherein a head end mounting seat and a tail end mounting seat are fixedly arranged on the bottom plate, a servo motor is fixedly arranged on the head end mounting seat, a rotary table is arranged on an output shaft of the servo motor, a spring seat and a positioning disk are connected to the rotary table, a head end center is arranged in the middle of the positioning disk, the head end center faces the tail end mounting seat, an angular limiting pin is further arranged at the side eccentric position of the positioning disk, a hydraulic driving piece facing the head end mounting seat is arranged on the tail end mounting seat, and a tail end center facing the head end mounting seat is fixedly arranged on an output shaft of the hydraulic driving piece; at least two support plates are fixedly arranged between the head end installation seat and the tail end installation seat on the bottom plate, and the upper ends of the support plates are provided with V-shaped openings. The clamp can conveniently and rapidly feed materials, ensures accuracy and is high in adjustability.
Description
Technical Field
The invention belongs to the technical field of machine tool machining auxiliary equipment, relates to machining equipment for axial holes of a cam shaft, and particularly relates to a special fixture for machining radial holes of the cam shaft.
Background
The camshaft is one of five major core components of the engine, the existing camshaft generally adopts a hollow technology, a central through hole is a main oil passage hole, a plurality of small radial holes are designed at the neck position of each main shaft and are communicated with the main oil passage hole, and the camshaft is used for lubrication of the neck of the main shaft and driving of a VVT timing mechanism during engine operation. In the existing camshaft processing technology, because the diameter of the radial hole is usually smaller, a vertical processing center or a special drilling machine tool is generally adopted for processing, and the processing precision, the model changing convenience and the processing efficiency put high requirements on the clamp.
The clamp for the camshaft processing device comprises a workbench, wherein a supporting frame for placing a camshaft to be processed is arranged on the workbench, a compression cylinder corresponding to the supporting frame is further arranged on the workbench, the free end of a piston rod of the compression cylinder is connected with a pressing plate, the pressing plate compresses the camshaft to be processed in a state that the piston rod of the compression cylinder is pressed down, a groove is formed in the workbench, two L-shaped hooks with opposite openings are arranged on the inner side wall of the groove, the upper parts of the two L-shaped hooks extend out of the upper surface of the workbench, and the middle parts of the two L-shaped hooks are hinged with the inner side wall of the groove; the groove is internally provided with a pull rod, two clamping grooves are symmetrically arranged on the side wall of the upper part of the pull rod, the lower free ends of the two L-shaped clamping hooks are respectively in clearance fit in the two clamping grooves, and when the pull rod is in a downward moving state, the upper free ends of the two L-shaped clamping hooks relatively rotate and clamp cam blades of a cam shaft to be processed; the bottom of the workbench is vertically provided with a tensioning oil cylinder, and the free end of a piston rod of the tensioning oil cylinder is connected with the bottom of the pull rod.
The clamp in the patent document cannot be well suitable for radial hole machining of a cam shaft, and is time-consuming and not accurate enough when workpieces are fed.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides a special fixture for processing radial holes of a cam shaft, which aims at solving the technical problems that: how to improve the efficiency of workpiece feeding and the positioning accuracy during the radial hole processing of the cam shaft.
The aim of the invention can be achieved by the following technical scheme:
the special fixture for processing radial holes of cam shafts comprises a bottom plate, and is characterized in that a head end mounting seat and a tail end mounting seat are fixedly arranged on the bottom plate, a servo motor is fixedly arranged on the head end mounting seat, a turntable is arranged on an output shaft of the servo motor, a spring seat and a positioning disk are connected on the turntable, a head end center is arranged in the middle of the positioning disk and faces to the tail end mounting seat, an angular limiting pin is further arranged at the side eccentric position of the positioning disk, a hydraulic driving piece facing to the head end mounting seat is arranged on the tail end mounting seat, and a tail end center facing to the head end mounting seat is fixedly arranged on an output shaft of the hydraulic driving piece; the bottom plate is located between the head end installation seat and the tail end installation seat and is fixedly provided with at least two support plates, all the support plates are arranged at intervals, and the upper ends of the support plates are provided with V-shaped openings.
The principle is as follows: both ends of the cam shaft are provided with central holes, and the eccentric position of the head end of the cam shaft is also provided with an angular limiting hole matched with the angular limiting pin. The fixture adopts a complete set design mode, the whole structure is arranged on a bottom plate, and the complete set of fixture is directly arranged on a workbench of a machining center. When the positioning device is used, a camshaft workpiece is placed on the V-shaped openings of the two support plates, the head end center hole of the camshaft workpiece is aligned to the head end center, preliminary guiding and positioning are realized through the support plates, the workpiece is rotated again, so that the angular limiting pin on the positioning disc can be completely inserted into the angular limiting hole of the head end of the workpiece, then the tail end center is tightly propped, and the whole positioning action of the workpiece is completed. During processing, the servo motor drives the turntable to rotate so as to drive the workpiece to rotate, and the rotation angle can be designed randomly in a program according to the angle requirement of each radial hole of the product to realize automatic adjustment. According to the technical scheme, the hydraulic driving piece can drive the tail end center to move, so that the distance between the tail end center and the head end center is adjusted, workpieces with different lengths are machined, and the universality is high. The fixture adopts the head end center and the tail end center to realize positioning, the positioning reference and the whole line are completely unified, and the positioning precision is higher. The locating disc of the head end adopts a modularized design, and is matched with the installation design of the turntable in an axial and angular locating way; the positioning disc can directly prepare corresponding positioning discs according to the positioning size requirements of different products, the positioning disc can be quickly changed, the axial and angular positioning origins of the clamp can be quickly found, the adjustment time is greatly saved, and the working efficiency is improved.
In the special fixture for processing radial holes of cam shafts, a through hole is formed in the middle of the positioning disc, the head end center is movably inserted into the through hole, one end of the head end center is a tip end and extends out of the positioning disc, a spiral spring is arranged in the spring seat, and the other end of the head end center is a flat bottom end and abuts against the spiral spring.
In the special fixture for processing radial holes of camshafts, the supporting plate comprises a mounting plate and an adjusting plate, the lower end of the mounting plate is provided with a folded edge turned to one side, the folded edge is fixed on the bottom plate, the V-shaped opening is positioned at the upper end of the adjusting plate, the adjusting plate is provided with a first vertical strip-shaped hole, and the adjusting plate is fixedly connected with the upper end of the mounting plate through a first connecting bolt inserted into the first strip-shaped hole.
In the special fixture for processing radial holes of the cam shaft, the bottom plate is rectangular, the second strip-shaped holes are formed in the folded edges at intervals, the length direction of the second strip-shaped holes is consistent with that of the bottom plate, and the folded edges are fixedly connected with the bottom plate through the second connecting bolts inserted into the second strip-shaped holes.
In the special fixture for processing radial holes of the cam shaft, the number of the supporting plates is two, and the base plate is also provided with an origin block and a plurality of hanging rings.
Further, every two supporting plates, a head end center and a tail end center are positioned on the same straight line to form a group of clamping mechanisms, each bottom plate is provided with two groups of the clamping mechanisms, and the two groups of the clamping mechanisms are arranged side by side at intervals.
Compared with the prior art, the clamp has the following advantages:
1. The fixture drives the tail end center to move through the hydraulic driving piece, so that the distance between the tail end center and the head end center is adjusted, workpieces with different lengths are processed, and the universality is high.
2. The fixture provided by the invention adopts the head-end center and the tail-end center to realize positioning, the positioning reference and the whole line working procedures are completely unified, and the positioning precision is higher.
3. The locating disc at the head end adopts a modularized design, and is matched with the installation design of the turntable in an axial and angular locating way; the positioning disc can directly prepare corresponding positioning discs according to the positioning size requirements of different products, the positioning disc can be quickly changed, the axial and angular positioning origins of the clamp can be quickly found, the adjustment time is greatly saved, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic perspective view of the present clamp.
Fig. 2 is a schematic perspective view of the present fixture.
Fig. 3 is a schematic perspective view of the support plate in the present jig.
In the figure, 1, a bottom plate; 2. a head end mounting seat; 3. a tail end mounting seat; 4. a servo motor; 5. a turntable; 6. a spring seat; 7. a positioning plate; 7a, through holes; 8. a head end center; 9. a support plate; 91. a mounting plate; 91a, flanging; 91b, a second strip-shaped hole; 92. an adjustment plate; 92a, V-shaped openings; 92b, bar-shaped hole one; 10. an angular limiting pin; 11. a hydraulic drive; 12. a tail end center; 13. an origin block; 14. a hanging ring; 15. a first connecting bolt; 16. a second connecting bolt; 17. and a cam shaft.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the special fixture comprises a bottom plate 1, a head end mounting seat 2 and a tail end mounting seat 3 are fixedly arranged on the bottom plate 1, a servo motor 4 is fixedly arranged on the head end mounting seat 2, a rotary disc 5 is arranged on an output shaft of the servo motor 4, a spring seat 6 and a positioning disc 7 are connected on the rotary disc 5, a head end center 8 is arranged in the middle of the positioning disc 7 and faces the tail end mounting seat 3, an angular limiting pin 10 is further arranged at the side eccentric position of the positioning disc 7, a hydraulic driving piece 11 facing the head end mounting seat 2 is arranged on the tail end mounting seat 3, and a tail end center 12 facing the head end mounting seat 2 is fixedly arranged on an output shaft of the hydraulic driving piece 11; at least two support plates 9 are fixedly arranged between the head end mounting seat 2 and the tail end mounting seat 3 on the bottom plate 1, all the support plates 9 are arranged at intervals, and the upper ends of the support plates 9 are provided with V-shaped openings 92a; both ends of the cam shaft 17 are provided with center holes, and the eccentric position of the head end of the cam shaft 17 is also provided with an angular limiting hole matched with the angular limiting pin 10. The fixture adopts a complete set design mode, the whole structure is arranged on a bottom plate 1, and the complete set of fixture is directly arranged on a workbench of a machining center. When the positioning device is used, a workpiece of the cam shaft 17 is placed on the V-shaped openings 92a of the two support plates 9, the head end center hole of the workpiece of the cam shaft 17 is aligned with the head end center 8, preliminary guiding and positioning are realized through the support plates 9, the workpiece is rotated again, the angular limiting pin 10 on the positioning disc 7 can be completely inserted into the angular limiting hole of the head end of the workpiece, then the tail end center 12 is tightly propped, and the whole positioning action of the workpiece is finished. During processing, the servo motor 4 drives the turntable 5 to rotate, so that the workpiece is driven to rotate, and the rotation angle can be randomly designed in a program according to the angle requirement of each radial hole of a product to realize automatic adjustment.
As shown in fig. 1 and 2, a through hole 7a is formed in the middle of the positioning disc 7, a head end center 8 is movably inserted into the through hole 7a, one end of the head end center 8 is a tip end, the end extends out of the positioning disc 7, a spiral spring is arranged in the spring seat 6, the other end of the head end center 8 is a flat bottom end, and the end abuts against the spiral spring; as shown in fig. 3, the supporting plate 9 comprises a mounting plate 91 and an adjusting plate 92, wherein the lower end of the mounting plate 91 is provided with a folded edge 91a which is folded to one side, the folded edge 91a is fixed on the bottom plate 1, a V-shaped opening 92a is positioned at the upper end of the adjusting plate 92, the adjusting plate 92 is provided with a vertical strip-shaped hole I92 b, and the adjusting plate 92 is fixedly connected with the upper end of the mounting plate 91 through a connecting bolt I15 inserted into the strip-shaped hole I92 b; the bottom plate 1 is rectangular, the folded edge 91a is provided with two strip-shaped holes 91b which are arranged at intervals, the length direction of the strip-shaped holes 91b is consistent with the length direction of the bottom plate 1, and the folded edge 91a is fixedly connected with the bottom plate 1 through a second connecting bolt 16 inserted into the strip-shaped holes 91 b.
Preferably, in this embodiment, the number of the supporting plates 9 is two, and the base plate 1 is further provided with an origin block 13 and a plurality of hanging rings 14. Further, each two supporting plates 9, one head end center 8 and one tail end center 12 are positioned on the same straight line to form a group of clamping mechanisms, each bottom plate 1 is provided with two groups of the clamping mechanisms, and the two groups of the clamping mechanisms are arranged side by side at intervals.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although 1, floor are used more herein; 2. a head end mounting seat; 3. a tail end mounting seat; 4. a servo motor; 5. a turntable; 6. a spring seat; 7. a positioning plate; 7a, through holes; 8. a head end center; 9. a support plate; 91. a mounting plate; 91a, flanging; 91b, a second strip-shaped hole; 92. an adjustment plate; 92a, V-shaped openings; 92b, bar-shaped hole one; 10. an angular limiting pin; 11. a hydraulic drive; 12. a tail end center; 13. an origin block; 14. a hanging ring; 15. a first connecting bolt; 16. a second connecting bolt; 17. camshaft, etc., but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (3)
1. The special fixture for processing radial holes of camshafts comprises a bottom plate (1), and is characterized in that a head end mounting seat (2) and a tail end mounting seat (3) are fixedly arranged on the bottom plate (1), a servo motor (4) is fixedly arranged on the head end mounting seat (2), a rotary table (5) is arranged on an output shaft of the servo motor (4), a spring seat (6) and a positioning disc (7) are connected onto the rotary table (5), a head end center (8) is arranged in the middle of the positioning disc (7) and faces the head end mounting seat (3), an angular limiting pin (10) is further arranged at the side eccentric position of the positioning disc (7), a hydraulic driving part (11) facing the head end mounting seat (2) is arranged on the tail end mounting seat (3), and a tail end center (12) facing the head end mounting seat (2) is fixedly arranged on an output shaft of the hydraulic driving part (11). At least two support plates (9) are fixedly arranged between the head end mounting seat (2) and the tail end mounting seat (3) on the bottom plate (1), all the support plates (9) are arranged at intervals, and a V-shaped opening (92 a) is formed in the upper end of each support plate (9);
A through hole (7 a) is formed in the middle of the positioning disc (7), the head end center (8) is movably inserted into the through hole (7 a), one end of the head end center (8) is a tip end, the end extends out of the positioning disc (7), a spiral spring is arranged in the spring seat (6), and the other end of the head end center (8) is a flat bottom end and is abutted against the spiral spring;
the supporting plate (9) comprises a mounting plate (91) and an adjusting plate (92), wherein a folded edge (91 a) turned to one side is arranged at the lower end of the mounting plate (91), the folded edge (91 a) is fixed on the bottom plate (1), the V-shaped opening (92 a) is positioned at the upper end of the adjusting plate (92), a vertical strip-shaped hole I (92 b) is formed in the adjusting plate (92), and the adjusting plate (92) is fixedly connected with the upper end of the mounting plate (91) through a connecting bolt I (15) inserted into the strip-shaped hole I (92 b);
both ends of camshaft (17) all have the centre bore, the head end eccentric position of camshaft (17) still be equipped with angle to spacer pin (10) matched with angle to the spacer hole, camshaft (17) work piece is placed on V type opening (92 a) of two backup pads (9) to with the head end centre bore of camshaft (17) work piece centering head end top (8), realize preliminary direction and location through backup pad (9), rotate camshaft (17) work piece again and make angle to spacer pin (10) on positioning disk (7) can insert in the angle to spacer hole of camshaft (17) work piece head end completely, tail end top (12) top tightly afterwards.
2. The special fixture for radial hole processing of cam shaft according to claim 1, wherein the bottom plate (1) is rectangular, the folded edge (91 a) is provided with two strip-shaped holes (91 b) arranged at intervals, the length direction of the strip-shaped holes (91 b) is consistent with the length direction of the bottom plate (1), and the folded edge (91 a) is fixedly connected with the bottom plate (1) through a connecting bolt (16) inserted into the strip-shaped holes (91 b).
3. The special fixture for radial hole processing of cam shafts according to claim 2, characterized in that the number of the supporting plates (9) is two, and the base plate (1) is also provided with an origin block (13) and a plurality of hanging rings (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810893413.5A CN108788198B (en) | 2018-08-07 | 2018-08-07 | Special fixture for processing radial holes of cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810893413.5A CN108788198B (en) | 2018-08-07 | 2018-08-07 | Special fixture for processing radial holes of cam shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108788198A CN108788198A (en) | 2018-11-13 |
| CN108788198B true CN108788198B (en) | 2024-05-03 |
Family
ID=64079393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810893413.5A Active CN108788198B (en) | 2018-08-07 | 2018-08-07 | Special fixture for processing radial holes of cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788198B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2545181A (en) * | 1945-02-02 | 1951-03-13 | Weiss Albert | Outboard support for the arm of a radial boring machine |
| JPH07299607A (en) * | 1994-04-29 | 1995-11-14 | Nippei Toyama Corp | Tailstock |
| US6053083A (en) * | 1998-02-26 | 2000-04-25 | Mosey; George N. | Turning and boring machine with double centering positioners |
| CN2863321Y (en) * | 2005-08-08 | 2007-01-31 | 浙江三鸥机械股份有限公司 | Cam-ring chuck with locking piece |
| CN102303247A (en) * | 2011-08-12 | 2012-01-04 | 成都科盛石油科技有限公司 | System for centering slender workpiece of machining cutting machine tool |
| CN205200585U (en) * | 2015-12-18 | 2016-05-04 | 浙江诺格汽车模具有限公司 | Anchor clamps of camshaft |
| CN108311716A (en) * | 2018-04-12 | 2018-07-24 | 宁波海天精工股份有限公司 | A kind of automatic eccentric clamping device of crank-shaft link neck processing hydraulic pressure |
| CN208528108U (en) * | 2018-08-07 | 2019-02-22 | 浙江卓驰机电科技有限公司 | A kind of special fixture for camshaft radial direction hole machined |
-
2018
- 2018-08-07 CN CN201810893413.5A patent/CN108788198B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2545181A (en) * | 1945-02-02 | 1951-03-13 | Weiss Albert | Outboard support for the arm of a radial boring machine |
| JPH07299607A (en) * | 1994-04-29 | 1995-11-14 | Nippei Toyama Corp | Tailstock |
| US6053083A (en) * | 1998-02-26 | 2000-04-25 | Mosey; George N. | Turning and boring machine with double centering positioners |
| CN2863321Y (en) * | 2005-08-08 | 2007-01-31 | 浙江三鸥机械股份有限公司 | Cam-ring chuck with locking piece |
| CN102303247A (en) * | 2011-08-12 | 2012-01-04 | 成都科盛石油科技有限公司 | System for centering slender workpiece of machining cutting machine tool |
| CN205200585U (en) * | 2015-12-18 | 2016-05-04 | 浙江诺格汽车模具有限公司 | Anchor clamps of camshaft |
| CN108311716A (en) * | 2018-04-12 | 2018-07-24 | 宁波海天精工股份有限公司 | A kind of automatic eccentric clamping device of crank-shaft link neck processing hydraulic pressure |
| CN208528108U (en) * | 2018-08-07 | 2019-02-22 | 浙江卓驰机电科技有限公司 | A kind of special fixture for camshaft radial direction hole machined |
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| Publication number | Publication date |
|---|---|
| CN108788198A (en) | 2018-11-13 |
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Effective date of registration: 20211227 Address after: 318000 No. 68, Airport South Road, Xiachen street, Jiaojiang District, Taizhou City, Zhejiang Province (self declaration) Applicant after: Agsai (Taizhou) Machinery Co.,Ltd. Address before: 318000 No.25, Airport South Road, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: ZHEJIANG ZHUOCHI DYNAMO-ELECTRIC TECHNOLOGY Co.,Ltd. |
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