CN111570915B - Reamer special for steering knuckle and machining method of steering knuckle - Google Patents
Reamer special for steering knuckle and machining method of steering knuckle Download PDFInfo
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- CN111570915B CN111570915B CN202010316335.XA CN202010316335A CN111570915B CN 111570915 B CN111570915 B CN 111570915B CN 202010316335 A CN202010316335 A CN 202010316335A CN 111570915 B CN111570915 B CN 111570915B
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- reamer
- cutter
- blade
- hole
- diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
- B23D77/14—Reamers for special use, e.g. for working cylinder ridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
- B23D77/02—Reamers with inserted cutting edges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D2277/00—Reaming tools
- B23D2277/06—Connections between component parts
Abstract
The invention relates to the technical field of machining, and discloses a reamer special for a steering knuckle and a machining method of the steering knuckle, wherein the reamer comprises a cutter handle, a cutter bar and a cutter head, the outer wall of the cutter head is provided with a mounting groove and a cutter blade, one side of the mounting groove is provided with a pressing block, a first threaded hole and a pressing bolt, the first threaded hole is formed in the pressing block, the other side of the mounting groove is provided with a second threaded hole, and the pressing bolt penetrates through the first threaded hole to be connected with the second threaded hole; the tool bit outer wall is provided with first conducting bar, and the cutter arbor outer wall is provided with the second conducting bar. The invention has the following advantages and effects: the blade can be repeatedly used after being ground after being worn, so that the processing cost is greatly reduced; the cutter handle is connected with the cutter rod through the flange, the cutter rod can be finely adjusted relative to the axis of the cutter handle, the deviation of the rotating center of the cutter head caused by the jumping and shaking of the cutter head is compensated, and the machining precision of the reamer can be improved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a reamer special for a steering knuckle and a machining method of the steering knuckle.
Background
The knuckle is a hinge for steering the wheel, and is generally fork-shaped. The upper fork and the lower fork are provided with two coaxial holes for mounting the main pin, and the steering knuckle journal is used for mounting a wheel. Two ears of a pin hole on the steering knuckle are connected with the fist-shaped parts at two ends of the front shaft through the main pin, so that the front wheel can deflect a certain angle around the main pin to steer the automobile. The coaxiality requirement of two coaxial holes of the steering knuckle is high, the deviation degree requirement is within the range of +/-0.02, and the coaxiality is difficult to guarantee by adopting the traditional boring cutter for processing.
The invention discloses a special reamer for an automobile steering knuckle, which comprises a front cutter body of a principle handle lever force application part and a rear cutter body close to the handle lever force application part, and can simultaneously twist two pin shaft holes of the automobile steering knuckle and ensure the coaxiality of the twisted two holes. However, the distance between the two coaxial holes of the steering knuckle is long, so that the cutter bar of the reamer is long, and the front cutter body positioned at the front end of the reamer can generate jumping and shaking in the machining process, so that the coaxiality of the two coaxial holes is influenced, the installation performance of an automobile steering shaft is reduced, the automobile steering sensitivity is reduced, and the normal and stable running of an automobile is influenced. The machining precision requirement of the coaxial hole of the steering knuckle is high, the machining diameter of the cutter is reduced due to the fact that the worn cutter is subjected to grinding machining, and the machining precision of the coaxial hole of the steering knuckle is affected, so that the whole cutter or a cutter head is required to be replaced after the existing reamer is worn, and the machining cost of the steering knuckle is increased.
Disclosure of Invention
The invention aims to provide a reamer special for a steering knuckle and a machining method of the steering knuckle, which are used for machining two coaxial holes of the steering knuckle and have the effects of high machining coaxiality, capability of recycling a blade and low machining cost.
The technical purpose of the invention is realized by the following technical scheme: including handle of a knife, cutter arbor and tool bit, its characterized in that: the outer wall of the cutter head is uniformly provided with a plurality of mounting grooves and blades inserted in the mounting grooves, a pressing block, a first threaded hole formed in the pressing block and a pressing bolt in threaded connection with the threaded hole are arranged on one side of each mounting groove, a second threaded hole is formed in the other side of each mounting groove, the pressing bolt penetrates through the first threaded hole and is connected with the second threaded hole, and the pressing bolt is abutted to the blades; the cutter head outer wall evenly is provided with a plurality of first conducting bars, the cutter arbor outer wall evenly be provided with a plurality of second conducting bars corresponding in first conducting bar position.
By adopting the technical scheme, when the reamer is installed, the blade is firstly inserted into the installation groove, the position of the blade is adjusted according to the required cutting diameter, the compression bolt is screwed, the compression block is abutted against the side surface of the blade, the blade is fixed in the installation groove, and the end, far away from the knife edge, of the blade is abutted against the compression bolt, so that the machining diameter of the blade is further limited; when the first blocking hole is machined, the first guide strip is supported in the first blocking hole, and when the second blocking hole is machined, the second guide strip is supported in the first blocking hole, so that the coaxiality of the first blocking hole and the second blocking hole can be guaranteed.
The invention is further provided with: and a circular truncated cone-shaped adjusting rod is arranged at the joint of the pressing bolt and the blade.
By adopting the technical scheme, after the blade is abraded, the blade can be ground to realize the reutilization of the blade, the diameter of the joint of the circular truncated cone type adjusting rod and the blade is increased by further screwing the bolt, the processing diameter reduced by the abrasion of the blade can be compensated, and the ground thickness of the blade is usually 0.01-0.02 mm.
The invention is further provided with: the diameter of the outer peripheral surface of the first guide bar is consistent with that of the outer peripheral surface of the second guide bar.
The invention is further provided with: the diameter of the peripheral surface of the first guide bar is 0.01-0.015mm smaller than the machining diameter of the blade.
By adopting the technical scheme, when the second gear hole is machined, the cutter bar is positioned in the first gear hole, the first guide bar is supported in the first gear hole, and the outer diameter of the first guide bar is one wire (0.01-0.015mm) smaller than the outer diameter of the cutter point, so that the coaxiality deviation degree of the two holes can be ensured to be within 0.02.
The invention is further provided with: the cutter bar is characterized in that a connecting rod is arranged at the upper end of the cutter handle and is uniformly arranged in a plurality of threaded holes III at the lower end of the connecting rod, a flange plate is fixed below the cutter bar and is uniformly arranged in through holes in the flange plate, fixing bolts are inserted in the through holes in the flange plate, a connecting groove for the connecting rod to be embedded is formed in the bottom of the flange plate, and the fixing bolts penetrate through the through holes in the flange plate and are in three-thread connection with the threaded holes.
The invention is further provided with: the inner diameter of the connecting groove is larger than the outer diameter of the connecting rod.
The invention is further provided with: the diameter of the through hole in the flange plate is larger than that of the fixing bolt.
The invention is further provided with: the side wall of the flange plate is uniformly provided with at least two adjusting holes and adjusting bolts in the adjusting holes in a threaded connection mode.
Through adopting above-mentioned technical scheme, the connecting rod of handle of a knife upper end is pegged graft in the spread groove, and handle of a knife and cutter arbor pass through ring flange interconnect, because the spread groove internal diameter is greater than the connecting rod external diameter, and the through-hole diameter on the ring flange is greater than the fixing bolt diameter, so the axle center of cutter arbor can finely tune for the handle of a knife for the offset of the tool bit center of rotation that the compensation reamer tool bit is jumped and is trembled and lead to.
The invention is further provided with: the processing method of the reamer special for the steering knuckle comprises the following steps:
the method comprises the following steps: mounting the reamer on a machine tool, measuring the jumping and shaking degree of a reamer head by adopting a dial indicator, and adjusting the rotation center of the reamer head through an adjusting bolt on the side wall of the flange plate to enable the rotation center of the reamer head to be superposed with the rotation center of the machine tool;
step two: a reamer is adopted to rotate to process a first gear hole of a steering knuckle, a first guide bar on a cutter bar is supported in the first gear hole while the first gear hole is processed, and the linear speed of the reamer is adjusted to be 75-85 m/s; after the first gear hole is machined, supporting a second guide bar on the cutter bar in the first gear hole, machining a second gear hole, and adjusting the linear speed of the reamer to be 90-100 m/s;
step three: and when the blade is worn, taking down the blade to grind the blade, and after the blade is embedded into the mounting groove after grinding, finely adjusting the machining diameter of the blade through a compression bolt.
The invention has the beneficial effects that:
1. the reamer is characterized in that a blade is fixed in a mounting groove by a compression bolt and a compression block, when the reamer works, the force applied to the blade is mainly along the tangential direction of a cutter head, the blade is arranged in the mounting groove, and the displacement in the tangential direction is limited by the inner wall of the mounting groove and the compression block; the compression bolt enables the compression block to abut against the blade on one hand, and fixes the position of the blade along the tangential direction of the cutter head on the other hand, the compression bolt abuts against one end, far away from the cutter head, of the blade, so that the displacement of the compression bolt moving towards the mounting groove is limited, the machining diameter of the cutter head is fixed, and the machining precision of the reamer is improved;
2. the blade is detachably connected to the cutter head, the blade can be replaced after the blade is worn, the whole reamer is not required to be replaced, the processing cost is greatly reduced, the blade can be ground after being worn, the blade is recycled, the cost is further reduced, a circular truncated cone-shaped adjusting rod is arranged at the joint of the pressing bolt and the blade, the diameter of the joint of the adjusting rod and the blade can be increased by further screwing the pressing bolt, the reduced thickness of the blade after being ground is compensated, and the processing diameter of the reamer is kept unchanged;
3. the cutter handle is connected with the cutter rod through the flange, the cutter rod can be finely adjusted relative to the axis of the cutter handle, the deviation of the rotating center of the cutter head caused by the jumping and shaking of the cutter head is compensated, and the machining precision of the reamer can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is an exploded view of the cutter head.
Fig. 4 is an exploded view of the handle and the tool bar.
FIG. 5 is a schematic view of a tool shank configuration.
In the figure, 1, a knife handle; 11. a connecting rod; 12. a third threaded hole; 2. a cutter bar; 21. a second conducting bar; 22. a flange plate; 23. a through hole; 24. connecting grooves; 25. an adjustment hole; 26. adjusting the bolt; 27. fixing the bolt; 3. a cutter head; 31. mounting grooves; 32. a blade; 33. a compression block; 34. a first threaded hole; 35. a second threaded hole; 36. a hold-down bolt; 37. adjusting a rod; 38. a first conductive strip.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example (b): a reamer special for a steering knuckle is shown in figures 1-3 and comprises a cutter handle 1, a cutter bar 2 and a cutter head 3, wherein two installation grooves 31 are uniformly formed in the outer wall of the cutter head 3, the side walls of the installation grooves 31 are perpendicular to the tangential direction of the outer wall of the cutter head 3, blades 32 are inserted into the installation grooves 31, a pressing block 33 is arranged on one side of each installation groove 31, a first threaded hole 34 is formed in each pressing block 33, a second threaded hole 35 is formed in the other side of each installation groove 31, a pressing bolt 36 is in threaded connection with the first threaded hole 34 and the second threaded hole 35, the pressing block 33 is abutted to the blades 32, the blades 32 are positioned at one ends of the installation grooves 31 and abutted to the pressing bolt 36, the pressing blocks 33 and the pressing bolt 36 fix the blades 32 on the cutter head 3, and a circular table type adjusting rod 37 is arranged at the joint of the blades 32 and the pressing bolt 36, so that the machining diameter of the blades 32 can be finely adjusted; the outer wall of the tool bit 3 is uniformly provided with a plurality of first guide bars 38, the outer wall of the tool bar 2 is uniformly provided with second guide bars 21 corresponding to the positions of the first guide bars 38, the diameter of the outer peripheral surface of each first guide bar 38 is 0.01-0.015mm smaller than the machining diameter of the blade 32, and the diameter of the outer peripheral surface of each second guide bar 21 is consistent with that of the first guide bar 38.
As shown in fig. 4 to 5, a connecting rod 11 is arranged at the upper end of the tool holder 1, a plurality of threaded holes three 12 are arranged at the lower end of the connecting rod 11, a flange plate 22 is fixed at the lower end of the tool bar 2, a plurality of through holes 23 are uniformly arranged on the flange plate 22, a connecting groove 24 for the connecting rod 11 to be embedded is arranged at the lower end of the tool bar 2, and after the connecting rod 11 is embedded into the connecting groove 24, a fixing bolt 27 passes through the through hole 23 to be connected with the threaded holes three 12, so that the tool bar 2 is fixed on the tool holder 1; the diameter of the through hole 23 on the flange plate 22 is larger than the diameter of the fixing bolt 27, the diameter of the connecting groove 24 is larger than the diameter of the connecting rod 11, two adjusting holes 25 are symmetrically arranged on the side wall of the flange plate 22, adjusting bolts 26 are connected in the adjusting holes 25 in a threaded mode, and the position of the cutter rod 2 relative to the cutter handle 1 can be adjusted through the adjusting bolts 26.
A method for processing a reamer special for a steering knuckle comprises the following steps:
the method comprises the following steps: the reamer is arranged on a machine tool, the jumping and shaking degree of a reamer head 3 is measured by adopting a dial indicator, a fixing bolt 27 is loosened, the rotation center of the reamer head 3 is adjusted by an adjusting bolt 26 on the side wall of the flange plate 22, so that the rotation center of the reamer head 3 is coincided with the rotation center of the machine tool, then the fixing bolt 27 is screwed, a cutter bar 2 is stably connected to a cutter handle 1, and the rotation center of the reamer is prevented from shifting in the machining process;
step two: a first gear hole of a steering knuckle is machined by rotating a reamer, a first guide bar 38 on a cutter bar 2 is supported in the first gear hole while the first gear hole is machined, the reamer is longer in overhang at the moment, parameters of the reamer are properly reduced, and the linear velocity of the reamer is adjusted to be 85 m/s; after the first gear hole is processed, supporting a second guide bar 21 on the cutter bar 2 in the first gear hole, then processing a second gear hole, and adjusting the linear speed of the reamer to be 100 m/s;
step three: when the blade 32 is abraded, the blade 32 is taken down to grind the blade 32, the thickness of the ground blade 32 can be reduced by 0.01-0.22 mm, the compression bolt 36 is further screwed after the blade 32 is embedded into the mounting groove 31, the diameter of the joint of the adjusting rod 37 on the compression bolt 36 and the blade 32 is increased, the blade 32 can be pushed outwards, the processing diameter of the blade 32 is finely adjusted, and the grinding loss of the blade 32 is compensated.
Claims (8)
1. The utility model provides a special reamer of knuckle, includes handle of a knife (1), cutter arbor (2) and tool bit (3), its characterized in that: the outer wall of the cutter head (3) is uniformly provided with a plurality of mounting grooves (31) and blades (32) inserted in the mounting grooves (31), one side of each mounting groove (31) is provided with a pressing block (33), a first threaded hole (34) formed in the pressing block (33) and a pressing bolt (36) in threaded connection with the corresponding threaded hole, the other side of each mounting groove (31) is provided with a second threaded hole (35), the pressing bolt (36) penetrates through the first threaded hole (34) to be connected with the second threaded hole (35), and the pressing bolt (36) is abutted to the blades (32); the utility model discloses a cutter head, including cutter arbor (2), cutter head (3) outer wall, cutter arbor (2) outer wall evenly is provided with a plurality of first conducting bars (38), cutter arbor (2) outer wall evenly be provided with a plurality of second conducting bars (21) that first conducting bar (38) position is corresponding, clamp bolt (36) with blade (32) department of meeting is provided with round platform type regulation pole (37).
2. The reamer as claimed in claim 1, wherein: the diameter of the outer peripheral surface of the first conducting bar (38) is consistent with that of the outer peripheral surface of the second conducting bar (21).
3. The reamer as claimed in claim 1, wherein: the diameter of the peripheral surface of the first guide bar (38) is 0.01-0.015mm smaller than the machining diameter of the blade (32).
4. The reamer as claimed in claim 3, wherein: the utility model discloses a handle of a knife, including handle of a knife (1), handle of a knife (1) upper end is provided with connecting rod (11), evenly sets up a plurality of screw holes three (12) of connecting rod (11) lower extreme, cutter arbor (2) below is fixed with ring flange (22), evenly sets up through-hole (23) on ring flange (22) are pegged graft fixing bolt (27) on ring flange (22), cutter arbor (2) bottom is provided with the confession connecting groove (24) of connecting rod (11) embedding, fixing bolt (27) pass through-hole (23) of ring flange (22) with screw hole three (12) threaded connection.
5. The reamer as claimed in claim 4, wherein: the inner diameter of the connecting groove (24) is larger than the outer diameter of the connecting rod (11).
6. The reamer as claimed in claim 4, wherein: the diameter of the through hole (23) on the flange plate (22) is larger than that of the fixing bolt (27).
7. The reamer as claimed in claim 4, wherein: the side wall of the flange plate (22) is symmetrically provided with at least two adjusting holes (25) and adjusting bolts (26) which are in threaded connection in the adjusting holes (25).
8. A method of processing a reamer specially used for a knuckle according to any one of claims 5 to 7, comprising the steps of:
the method comprises the following steps: the reamer is arranged on a machine tool, the jumping and shaking degree of a reamer head (3) is measured by a dial indicator, and the rotation center of the reamer head (3) is adjusted through an adjusting bolt (26) on the side wall of the flange plate (22), so that the rotation center of the reamer head (3) is superposed with the rotation center of the machine tool;
step two: a first gear hole of a steering knuckle is machined by rotating a reamer, a first guide bar (38) on a cutter bar (2) is supported in the first gear hole while the first gear hole is machined, and the linear speed of the reamer is adjusted to be 75-85 m/s; after the first gear hole is machined, supporting a second guide bar (21) on the cutter bar (2) in the first gear hole, machining a second gear hole, and adjusting the linear speed of the reamer to 90-100 m/s;
step three: and when the blade (32) is worn, the blade (32) is taken down to grind the blade (32), and after the blade (32) is embedded into the mounting groove (31) after grinding, the processing diameter of the blade (32) is finely adjusted through the compression bolt (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316335.XA CN111570915B (en) | 2020-04-21 | 2020-04-21 | Reamer special for steering knuckle and machining method of steering knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316335.XA CN111570915B (en) | 2020-04-21 | 2020-04-21 | Reamer special for steering knuckle and machining method of steering knuckle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111570915A CN111570915A (en) | 2020-08-25 |
| CN111570915B true CN111570915B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010316335.XA Active CN111570915B (en) | 2020-04-21 | 2020-04-21 | Reamer special for steering knuckle and machining method of steering knuckle |
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| CN (1) | CN111570915B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115055910B (en) * | 2022-07-12 | 2023-08-29 | 徐州阿马凯液压技术有限公司 | High-precision valve core hole precision machining method suitable for cast valve body |
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| US3880545A (en) * | 1972-11-27 | 1975-04-29 | Mapal Fab Praezision | Fine-boring tool |
| WO2005105355A2 (en) * | 2004-05-04 | 2005-11-10 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Cutting tip and reamer |
| CN102256734A (en) * | 2008-12-19 | 2011-11-23 | 克莱斯博士玛帕精密仪器工厂两合公司 | Reamer, cutter plates therefor and method for adjusting the machining diameter of a reamer of this type |
| CN202155610U (en) * | 2011-06-17 | 2012-03-07 | 威海威硬工具股份有限公司 | Adjusting device for high-speed reamer with HSK handle |
| CN202555912U (en) * | 2012-04-05 | 2012-11-28 | 大连恒瑞精机有限公司 | Reamer with replaceable blade |
| CN202763208U (en) * | 2012-07-20 | 2013-03-06 | 达州市金恒机械有限责任公司 | Crankshaft hole reamer and lathe for processing cylinder body crankshaft holes of multicylinder engine |
| CN104816043A (en) * | 2014-02-05 | 2015-08-05 | 埃科罗尔刀具技术股份公司 | Skiving Tool |
| DE202013012454U1 (en) * | 2013-06-04 | 2016-11-24 | Kennametal Inc. | Cutting tool, in particular boring bar |
| CN208450730U (en) * | 2018-05-04 | 2019-02-01 | 上汽通用五菱汽车股份有限公司 | A kind of cutter for machining crankshafts flange center hole |
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2020
- 2020-04-21 CN CN202010316335.XA patent/CN111570915B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3880545A (en) * | 1972-11-27 | 1975-04-29 | Mapal Fab Praezision | Fine-boring tool |
| WO2005105355A2 (en) * | 2004-05-04 | 2005-11-10 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Cutting tip and reamer |
| CN102256734A (en) * | 2008-12-19 | 2011-11-23 | 克莱斯博士玛帕精密仪器工厂两合公司 | Reamer, cutter plates therefor and method for adjusting the machining diameter of a reamer of this type |
| CN202155610U (en) * | 2011-06-17 | 2012-03-07 | 威海威硬工具股份有限公司 | Adjusting device for high-speed reamer with HSK handle |
| CN202555912U (en) * | 2012-04-05 | 2012-11-28 | 大连恒瑞精机有限公司 | Reamer with replaceable blade |
| CN202763208U (en) * | 2012-07-20 | 2013-03-06 | 达州市金恒机械有限责任公司 | Crankshaft hole reamer and lathe for processing cylinder body crankshaft holes of multicylinder engine |
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| CN111570915A (en) | 2020-08-25 |
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