CN109848742B - Machining tool capable of automatically reducing shape and position deviation of shock absorption block casting - Google Patents
Machining tool capable of automatically reducing shape and position deviation of shock absorption block casting Download PDFInfo
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- CN109848742B CN109848742B CN201910256514.6A CN201910256514A CN109848742B CN 109848742 B CN109848742 B CN 109848742B CN 201910256514 A CN201910256514 A CN 201910256514A CN 109848742 B CN109848742 B CN 109848742B
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- 238000005266 casting Methods 0.000 title claims abstract description 53
- 230000035939 shock Effects 0.000 title claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 22
- 238000003754 machining Methods 0.000 title claims description 16
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
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Abstract
The invention discloses a processing tool for automatically reducing the shape and position deviation of a shock absorption block casting, which comprises a ductile iron disc and a positioning block, wherein a cylindrical first shaft hole, a cylindrical second shaft hole, a cylindrical third shaft hole and a cylindrical fourth shaft hole are sequentially formed in the ductile iron disc from one side end face to the other side end face; the positioning block comprises a positioning rod and a positioning head, the positioning head comprises a cylindrical first limiting cylinder, a cylindrical second limiting cylinder and a limiting convex block, a cover plate is arranged in the second shaft hole, one end of the positioning rod penetrates through the through hole, the other end of the positioning rod is fixedly connected with the first limiting cylinder, and a reset spring is arranged between the first limiting cylinder and the cover plate; at least three positioning holes are formed in the end face, far away from the first shaft hole, of the ductile iron disc, and equal-height columns are arranged in the positioning holes; the invention ensures the accuracy and quality of casting processing, and reduces the waste rate of the casting from 26% to 0.5%.
Description
Technical Field
The invention relates to the technical field of machining tool equipment, in particular to a machining tool and a machining method for automatically reducing the shape and position deviation of a shock absorber block casting.
Background
The automobile damper is an indispensable accessory product in automobiles. Besides the size control requirement, the automobile damper has higher control requirement on weight, the weight tolerance is generally required to be plus or minus 35g, in order to ensure the consistency of the automobile damper castings, a high-pressure horizontal automatic production line is generally selected to produce the castings, but the average processing waste removal amount is still up to 26%, and the economic loss is serious.
The existing automobile shock absorber has the following processing technology: the first procedure, machining an angle which is identical to the outer circle 94 degrees of the casting by using a lengthened three-grab lathe, axially positioning the angle to be flat by using a small plane, radially clamping the large plane of the casting by using the lengthened three-grab lathe, wherein the cutting amount is 2.0mm, and chamfering an external round angle R4 at the same time, as shown in figure 1; a second procedure, namely, three grabs are used for clamping the side excircle of the large plane by taking the turned large plane as a reference plane, and the middle counter bore of the forming reamer is scraped to be flat, as shown in fig. 2; thirdly, three clamping excircles are clamped by taking the processed large plane as a reference, and a phi 10 center hole is drilled; and a fourth step of removing the phi 10 sharp angle.
According to the processing technology, the problem that the casting surface is non-standard, particularly the casting side surface has rough surface, small knots and the like is solved, the 94-degree side surface of the damper block is clamped by the three grippers, meanwhile, the fact that the small plane of the balancing weight is close to the three-gripper inner reference plane is unreliable is ensured, and when the side surface is clamped, the small plane of the damper block and the three-gripper inner reference plane deviate to form a virtual positioning phenomenon due to the irregularity of the side surface; practice proves that the phenomenon of non-parallelism exists between the machined large plane and the small plane of the casting, and the phenomenon of serious non-uniformity occurs in the inverted phi 179.4mm bullnose after the large plane is machined, the problem of sinking coaxiality between the machined large plane and the blank of the casting is caused, the sinking side wall is subjected to single-sided cutting during sinking and scraping machining in the next working procedure, and the critical factor of unequal weights of the casting is also caused, so that the machining waste rejection is greatly improved.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a processing tool and a processing method for automatically reducing the shape and position deviation of a shock absorption block casting.
In order to solve the technical problems, the technical scheme of the invention is as follows:
The machining tool for automatically reducing the shape and position deviation of the shock absorption block casting comprises a ductile iron disc and a positioning block, wherein a cylindrical first shaft hole, a cylindrical second shaft hole, a cylindrical third shaft hole and a cylindrical fourth shaft hole are sequentially formed in the ductile iron disc from one side end face to the other side end face, the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole are coaxially arranged, the diameters of the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole are sequentially decreased, and the outer end faces of the first shaft hole and the fourth shaft hole are respectively flush with the end faces of two sides of the ductile iron disc; the positioning block comprises a positioning rod and a positioning head, the positioning head comprises a first limiting cylinder, the diameter of the first limiting cylinder is larger than that of a fourth shaft hole and smaller than that of a third shaft hole, a second limiting cylinder matched with the fourth shaft hole in shape is coaxially arranged on the end face of the first limiting cylinder, a limiting convex block matched with a concave hole in the middle of a small plane of a shock absorption block casting is arranged on the end face of the second limiting cylinder, the positioning rod is arranged along the axis of a ductile iron disc, a cover plate is fixedly arranged in the second shaft hole, a through hole is formed in the middle of the cover plate, one end of the positioning rod penetrates through the through hole, the other end of the positioning rod is fixedly connected with the first limiting cylinder, a reset spring is arranged between the first limiting cylinder and the cover plate, and is sleeved on the positioning rod, and the length of the reset spring is larger than the difference between the thickness of the third shaft hole and the thickness of the first limiting cylinder under the condition of no external force; three locating holes are formed in the end face, far away from the first shaft hole, of the ductile iron disc, three locating holes are located on the same circumference, equal-height columns are arranged in the locating holes, and the heights of the equal-height columns, extending out of the ductile iron disc, are equal to and smaller than those of the limiting protruding blocks.
Further, three contour posts are all provided on the same circumference.
The processing tool capable of automatically reducing the shape and position deviation of the shock absorber block casting is characterized in that the diameter of the cover plate is larger than that of the third shaft hole and smaller than that of the second shaft hole, and the cover plate is fixedly mounted on the end face of the second shaft hole through bolts.
The processing tool for automatically reducing the shape and position deviation of the shock absorber block casting is characterized in that the first shaft hole is matched with the spindle receiving disc of the lathe.
The beneficial effects of the invention are as follows:
(1) According to the processing tool provided by the invention, the small plane of the shock absorption block casting is used as the positioning surface for axial positioning, and is not arranged on the parting surface, so that the phenomena of deformation such as box closing clearance, box lifting and the like can not occur in the casting process, the small plane is smooth and regular, and the accuracy of axial positioning of the casting is effectively improved;
(2) When the processing tool provided by the invention is used for axially positioning, the small plane of the shock absorption block casting is propped up to be in contact with three contour posts, a plane with fixed reference is determined through the end surfaces of the three contour posts, so that the shock absorption block is attached to the plane with fixed reference, the large plane can be processed to automatically eliminate the large plane dimension deviation of the shock absorption block casting caused by casting parting, self-correction is formed, the accuracy of the axial positioning of the casting is ensured, the processing quality of the casting is ensured, and the waste rate of the casting is reduced to 0.5% from the original 26%;
(3) The positioning head is provided with the limiting convex blocks, and the limiting convex blocks correspond to the concave holes in the middle of the small plane of the shock absorption block casting, so that the limiting convex blocks can be embedded into the concave holes when the shock absorption block casting is clamped, and the radial movement of the casting is limited, thereby realizing the radial positioning of the shock absorption block casting, avoiding the inaccurate phenomenon of radial positioning caused by the irregularity of the shock absorption block casting, ensuring the fixed and accurate position of the casting in the processing process and ensuring the processing quality;
(4) According to the invention, the positioning block is formed into a whole by the first limiting cylinder, the second limiting cylinder, the limiting convex block and the positioning rod, the first limiting cylinder, the second limiting cylinder and the limiting convex block can extend into the third shaft hole and the fourth shaft hole of the ductile iron disc, and form an axially movable limiting system together with the reset spring and the cover plate, so that the processing tool can adapt to shock absorption block castings with different sizes, when the diameter of a concave hole in the middle of the shock absorption block casting changes, the small plane of the shock absorption block casting can still be propped to be flush with the contour column, the application range of the processing tool is wider, and the mutual interference between axial positioning and radial positioning can be prevented;
(5) According to the invention, the reset spring is arranged between the first limit cylinder and the cover plate, and when the second lug of the positioning head is completely embedded into the fourth shaft hole, the reset spring is in a micro deformation state, and the reset spring can always apply pressure to the positioning head, so that the positioning head can be reset after the casting is machined, the subsequent machining is facilitated, and the machining efficiency is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the prior art process steps of a damper block;
FIG. 2 is a schematic diagram of the prior art process steps for manufacturing a damper block;
FIG. 3 is a schematic diagram of the structure of the present invention;
FIG. 4 is a perspective view of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the tooling of FIG. 4;
FIG. 6 is a schematic cross-sectional view of the spheroidal iron plate of FIG. 3;
FIG. 7 is a schematic view of the structure of a contour post;
FIG. 8 is a schematic structural view of a positioning block;
FIG. 9 is a front view of a snubber block casting;
FIG. 10 is a section A-A of FIG. 9;
Wherein: 1. a ball iron plate; 2. a first shaft hole; 3. a second shaft hole; 4. a third shaft hole; 5. a fourth shaft hole; 6. a positioning block; 7. a positioning rod; 8. a positioning head; 9. a first limit cylinder; 10. the second limit cylinder; 11. a limit bump; 12. a cover plate; 13. a return spring; 14. a contour column; 15. and (5) casting the damping block.
Detailed Description
In order that the invention may be more readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment provides a processing tool capable of automatically reducing the shape and position deviation of a shock absorber casting, which comprises a ductile iron disc 1 and a positioning block 6.
Referring to fig. 6, the ductile iron disc 1 is a cylinder with the diameter of 110mm and the thickness of 47mm, a cylindrical first shaft hole 2 with the diameter of 100mm and the depth of 5mm is turned in the middle of the lower end surface of the ductile iron disc 1, and the shape of the first shaft hole 2 is matched with the shape of a lathe spindle receiving disc, so that the ductile iron disc 1 can be mounted on the lathe spindle receiving disc; a cylindrical second shaft hole 3 with the diameter of 80mm and the depth of 15mm is formed in the middle of the inner end face of the first shaft hole 2, a cylindrical third shaft hole 4 with the diameter of 42.15mm and the depth of 23mm is formed in the middle of the inner end face of the second shaft hole 3, a cylindrical fourth shaft hole 5 with the diameter of 38.15mm and the depth of 5mm is formed in the middle of the inner end face of the third shaft hole 4, the upper end face of the fourth shaft hole 5 extends to the upper end face of the ductile iron disc 1, and the first shaft hole 2, the second shaft hole 3, the third shaft hole 4 and the fourth shaft hole 5 are all coaxially arranged with the ductile iron disc 1.
Referring to fig. 8, the positioning block 6 comprises a positioning rod 7 and a positioning head 8, the positioning head 8 comprises a first limit cylinder 9 with a diameter of 42mm and a height of 5mm, a second limit cylinder 10 with a diameter of 38mm and a height of 5mm is coaxially arranged in the middle of the upper end face of the first limit cylinder 9, a limit bump 11 is arranged on the upper end face of the second limit cylinder 10, the cross section of the limit bump 11 is arc-shaped, a concave hole is formed in the middle of a small plane of the shock absorption block casting 15, and the limit bump 11 can be partially embedded into the concave hole, so that the shock absorption block casting 15 cannot move along the radial direction, and radial positioning is realized.
The locating lever 7 sets up along the axis direction of ductile iron disc 1, the up end of second shaft hole 3 passes through bolt fixed mounting and has apron 12, a through-hole that the diameter is 15.15mm has been seted up at the middle part of apron 12, the through-hole is passed to the one end of locating lever 7, the other end and first spacing cylinder 9 fixed connection, be provided with reset spring 13 between first spacing cylinder 9 and the apron 12, reset spring 13 cover is established on locating lever 7, under the condition that does not receive external force, reset spring 13's length is greater than 18mm, see fig. 5, when positioning head 8 gomphosis in ductile iron disc 1, reset spring 13 is in the slightly pressurized state, apply ascending power to positioning head 8. When the positioning head is pressed towards the inner part of the ductile iron disc, the positioning head can move towards the inner part of the ductile iron disc; when the positioning head is not subjected to external force, the return spring can push the positioning head to the state shown in fig. 5.
Three thread locating holes are formed in the upper end face of the ductile iron plate 1, the diameter of each locating hole is 10mm, the height of each locating hole is 10mm, the three locating holes are located on the same circumference with the radius of 27mm, the circumference is coaxial with the end face of the ductile iron plate 1, and the three locating holes are evenly distributed on the circumference. The equal-height columns 14 are arranged in each positioning hole, each equal-height column 14 consists of a threaded rod with the diameter of 10mm and the height of 10mm and a column head with the diameter of 20mm and the height of 5mm, the threaded rod is arranged in each positioning hole, the column heads are positioned on the upper end faces of the iron plates 1, and the upper end faces of the column heads are positioned in the same horizontal plane.
According to the machining tool, the small plane of the shock absorption block casting 15 is used as the positioning surface for axial positioning, the small plane of the shock absorption block casting 15 is not arranged on the parting surface, and deformation phenomena such as box closing clearance and box lifting can not occur in the casting process, so that the small plane is smooth and regular, the accuracy of axial positioning of the casting is effectively improved, the quality of casting machining is ensured, and the rejection rate of the casting is reduced to 0.5% from the original 26%.
In addition to the above embodiments, the present invention may have other embodiments; all technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (2)
1. Machining tool capable of automatically reducing shape and position deviation of shock absorption block castings (15), and is characterized in that: comprises a ball iron disc (1) and a positioning block (6),
The ball iron disc (1) is internally provided with a cylindrical first shaft hole (2), a second shaft hole (3), a third shaft hole (4) and a fourth shaft hole (5) from one side end face to the other side end face in sequence, the first shaft hole (2), the second shaft hole (3), the third shaft hole (4) and the fourth shaft hole (5) are coaxially arranged and the diameters of the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole (5) are gradually decreased, and the outer end faces of the first shaft hole (2) and the fourth shaft hole (5) are respectively flush with the end faces of the two sides of the ball iron disc (1);
The positioning block (6) comprises a positioning rod (7) and a positioning head (8), the positioning head (8) comprises a first limiting cylinder (9), the diameter of the first limiting cylinder (9) is larger than that of a fourth shaft hole (5) and smaller than that of a third shaft hole (4), a second limiting cylinder (10) matched with the fourth shaft hole (5) in shape is coaxially arranged on the end face of the first limiting cylinder (9), a limiting projection (11) matched with a small-plane middle concave hole of a shock-absorbing block casting (15) is arranged on the end face of the second limiting cylinder (10), the positioning rod (7) is arranged along the axis of a ductile iron disc (1), a cover plate (12) is fixedly arranged in the second shaft hole (3), a through hole is formed in the middle of the cover plate (12), one end of the positioning rod (7) penetrates through the through hole, the other end of the positioning rod is fixedly connected with the first limiting cylinder (9), a reset spring (13) is arranged between the first limiting cylinder (9) and the cover plate (12), the reset spring (13) is sleeved on the positioning rod (7) and is not subjected to the thickness difference between the first limiting cylinder (4) and the thickness of the first limiting cylinder is not subjected to the thickness difference between the first limiting cylinder and the first end and the first limiting cylinder (4;
Three positioning holes are formed in the end face, far away from the first shaft hole (2), of the ductile iron disc (1), the three positioning holes are located on the same circumference, equal-height columns (14) are arranged in the positioning holes, and the heights of the three equal-height columns (14) extending out of the ductile iron disc (1) are equal and smaller than the heights of the limiting protruding blocks (11);
The three equal-height columns (14) are all arranged on the same circumference;
The diameter of the cover plate (12) is larger than that of the third shaft hole (4) and smaller than that of the second shaft hole (3), and the cover plate (12) is fixedly arranged on the end face of the second shaft hole (3) through bolts.
2. The machining tool for automatically reducing shape and position deviation of damper block castings (15) according to claim 1, wherein the machining tool is characterized in that: the first shaft hole (2) is matched with the lathe spindle receiving disc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910256514.6A CN109848742B (en) | 2019-04-01 | 2019-04-01 | Machining tool capable of automatically reducing shape and position deviation of shock absorption block casting |
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| CN201910256514.6A CN109848742B (en) | 2019-04-01 | 2019-04-01 | Machining tool capable of automatically reducing shape and position deviation of shock absorption block casting |
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| CN109848742A CN109848742A (en) | 2019-06-07 |
| CN109848742B true CN109848742B (en) | 2024-06-18 |
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| CN109848741B (en) * | 2019-04-01 | 2020-08-28 | 朱爱军 | Machining tool and machining method for automatically reducing shape and position deviation of damping block casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209698568U (en) * | 2019-04-01 | 2019-11-29 | 朱爱军 | A kind of processing tool of automatic diminution damping block casting shape position error |
| CN109848741B (en) * | 2019-04-01 | 2020-08-28 | 朱爱军 | Machining tool and machining method for automatically reducing shape and position deviation of damping block casting |
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| JP4193972B2 (en) * | 2002-09-17 | 2008-12-10 | 株式会社ヤマザキ | Tool unit for machine tools |
| DE112006002087T5 (en) * | 2005-08-05 | 2008-06-12 | Kitagawa Iron Works Co., Ltd., Fuchu | Holding method and workpiece holding device for a turbocharger housing |
| CN201175839Y (en) * | 2008-01-23 | 2009-01-07 | 中机十院国际工程有限公司 | Cramp for turning end plane of cold rolling piece of hub bearing outer sleeve |
| CN105397535B (en) * | 2014-09-03 | 2017-10-13 | 哈尔滨建成集团有限公司 | One kind is used for the externally threaded fixture of the irregular revolving body workpieces of turning |
| CN204584821U (en) * | 2015-04-09 | 2015-08-26 | 端木慧娟 | A kind of lathe quick position frock clamp |
| CN105537634A (en) * | 2016-01-22 | 2016-05-04 | 中信戴卡股份有限公司 | Lathe chuck for aluminum alloy hub |
| CN105798680A (en) * | 2016-05-01 | 2016-07-27 | 中信戴卡股份有限公司 | Automobile wheel lathe clamp |
| CN105945624B (en) * | 2016-06-13 | 2017-11-07 | 宁波海天精工股份有限公司 | One kind processing thin-walled disk-like accessory clamping device |
| CN108032123B (en) * | 2017-12-21 | 2019-04-23 | 大连理工大学 | A kind of ball head core shaft rigid grasp tooling |
| CN109158571B (en) * | 2018-10-29 | 2023-09-08 | 扬州广润机械有限公司 | Casting mold for preventing leakage of automobile ductile iron steering gear shell casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209698568U (en) * | 2019-04-01 | 2019-11-29 | 朱爱军 | A kind of processing tool of automatic diminution damping block casting shape position error |
| CN109848741B (en) * | 2019-04-01 | 2020-08-28 | 朱爱军 | Machining tool and machining method for automatically reducing shape and position deviation of damping block casting |
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