CN109531304B - Clamping tool capable of realizing polishing and grinding of crank neck of large-sized crankshaft and polishing and grinding method using clamping tool - Google Patents
Clamping tool capable of realizing polishing and grinding of crank neck of large-sized crankshaft and polishing and grinding method using clamping tool Download PDFInfo
- Publication number
- CN109531304B CN109531304B CN201811533526.0A CN201811533526A CN109531304B CN 109531304 B CN109531304 B CN 109531304B CN 201811533526 A CN201811533526 A CN 201811533526A CN 109531304 B CN109531304 B CN 109531304B
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- transmission shaft
- polishing
- grinding
- lathe
- 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.)
- Active
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract 1
- 210000003739 neck Anatomy 0.000 description 20
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
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- 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
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
- B24B5/421—Supports therefor
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention relates to a clamping tool capable of realizing polishing and grinding of a crank neck of a large-sized crankshaft and a polishing and grinding method thereof, wherein cylindrical ends of a left transmission shaft and a right transmission shaft are connected with an upper tile seat and a connecting seat, and main journals at the left end and the right end of the crankshaft are respectively connected with the connecting seat and a lower tile seat; crank arms at the left end and the right end of the crankshaft are connected with square ends of a left transmission shaft and a right transmission shaft; the center distance between the upper end and the lower end of the connecting seat is the same as the eccentric distance of the crankshaft; the centers of the left and right transmission shafts are concentric with the center of the crank neck of the crankshaft. The polishing and grinding method is that after finishing finish machining is finished on the large-sized crankshaft, the center of the crank neck of the crankshaft is concentric with the left transmission shaft and the right transmission shaft of the clamping tool. The crank neck of the large-sized crankshaft is concentric with the main shaft of the lathe by clamping the left and right transmission shafts of the common lathe, the crank neck of the crankshaft rotates around the center of the main shaft of the lathe, and the polishing grinding wheel arranged on the tool rest of the lathe can polish the crank neck of the crankshaft. The polishing and grinding device has the advantages of high polishing and grinding efficiency, stable and reliable quality, smooth and round surface of the polished crankshaft crank neck and good roundness and straightness.
Description
Technical Field
The invention relates to a clamping tool for polishing and grinding a crank neck of a large-sized crankshaft and a polishing and grinding method using the same.
Background
The large-sized crankshaft has large rotation diameter, the eccentric distance is 400mm, the crank arm is narrower in gear opening, the requirement on the roughness of the crank neck is higher, the requirement can be met by polishing, and the large-sized crankshaft is not ground by a large-sized grinding machine. For example, a numerical control crank grinder and a follow-up grinder are limited by equipment factors, the grinding mode is only used for crankshafts with smaller eccentric distances, and the crankshafts with larger rotation diameter and eccentric distances and narrower crank arm gear opening cannot be ground, so that a new method is urgently needed to be developed.
Disclosure of Invention
Aiming at the current situation, the invention aims to provide a polishing method which can be applied to the large-scale crank neck polishing with larger rotation and larger eccentricity, and has the advantages of stability, reliability and high efficiency; the surface is smooth and round, the roundness and the straightness can be guaranteed, and the large-scale crank shaft turning neck polishing and grinding can be realized.
The implementation mode of the invention is as follows: the clamping tool for polishing and grinding the crank necks of the large-sized crankshafts is characterized in that one end of a left transmission shaft and one end of a right transmission shaft are cylinders, the other end of the left transmission shaft and the right transmission shaft are square, and square grooves are formed in the square ends; the cylindrical end of the left transmission shaft and the cylindrical end of the right transmission shaft are inserted into an inner hole formed by combining the upper tile seat and the connecting seat and are fastened by using a connecting bolt; main journals at the left end and the right end of the crankshaft are respectively plugged into inner holes formed by combining the connecting seat and the lower tile seat and are fastened by connecting bolts; crank arms at the left end and the right end of the crankshaft are respectively plugged into square grooves at square ends of the left transmission shaft and the right transmission shaft and are fastened by screws; the center distance between the threaded holes of the connecting seat and the lower tile seat is the same, and the center distance between the inner holes at the upper end and the lower end of the connecting seat is the same as the eccentric distance of the crankshaft; when the crank neck of the large-sized crankshaft is clamped, the centers of the left transmission shaft and the right transmission shaft are concentric with the crank neck center of the crankshaft.
The clamping tool for polishing and grinding the crank neck of the large-sized crankshaft and the polishing and grinding method using the clamping tool specifically comprise the following steps:
1) The method comprises the steps that a clamping tool for polishing and grinding a crank neck of a large-sized crankshaft and a crankshaft are integrally lifted onto a lathe after being installed, a lathe head chuck clamps a left transmission shaft, and a center hole of the left transmission shaft is propped up by a top; the lathe tail tip props against the central hole of the right transmission shaft, so that the left transmission shaft, the right transmission shaft, the crank neck of the crankshaft and the lathe spindle are concentric;
2) The left transmission shaft, the right transmission shaft and the crankshaft are driven to rotate together through the rotation of the lathe spindle;
3) And clamping the polishing grinding wheel on a lathe tool rest, rotating the lathe, and enabling the tool rest to move back and forth, wherein the polishing grinding wheel on the tool rest can polish and grind the crank neck of the crankshaft to the required requirement.
The polishing and grinding method can be applied to polishing and grinding of the large crank journal with large rotation and large eccentricity, and is stable and reliable and high in efficiency.
The surface of the large crankshaft crank neck polished by the polishing device is smooth and round, and the roundness and the straightness are easier to ensure.
Drawings
Figure 1 is a schematic view of a large crankshaft with an eccentricity of 400mm,
Figure 2 is a diagram of the present invention clamping a large crankshaft crank neck,
Fig. 3 is a cross-sectional view taken along A-A, B-B of fig. 2.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, one end of the left transmission shaft 4 and one end of the right transmission shaft 6 are cylinders, the other end of the left transmission shaft and the right transmission shaft are square, and square ends are provided with square grooves; the cylindrical end of the left transmission shaft 4 and the right transmission shaft 6 is inserted into the inner hole of the upper tile seat 5 and the connecting seat 8 after being combined, and is fastened by the connecting bolt 7; the main journals 1 at the left end and the right end of the crankshaft are respectively plugged into the inner holes of the combined connecting seat 8 and the lower tile seat 9 and are fastened by connecting bolts; crank arms 2 at the left end and the right end of the crank shaft are respectively plugged into square grooves at square ends of a left transmission shaft 4 and a right transmission shaft 6 and are fastened by bolts 10; the center distance between the threaded holes of the connecting seat 8 and the lower tile seat 9 is the same, and the center distance between the inner holes at the upper end and the lower end of the connecting seat 8 is 400mm with the eccentric distance of the crankshaft.
The whole fixture is made of 45# quenched and tempered steel, so that the rigidity of the whole fixture is ensured.
The method for polishing and grinding by using the clamping tool for polishing and grinding the crank neck of the large-scale crankshaft comprises the following specific steps:
1) And (3) integrally lifting the clamping tool for polishing and grinding the crank neck of the large-sized crankshaft and the crankshaft after the crankshaft is mounted, clamping the left transmission shaft 4 by a lathe head 11 chuck, and propping the center hole of the left transmission shaft 4 by a lathe tail 12 tip to prop the center hole of the right transmission shaft 6, so that the left transmission shaft 4 and the right transmission shaft 6 are concentric with the crank neck 3 of the crankshaft and a lathe spindle (figure 2).
2) The left transmission shaft 4, the right transmission shaft 6 and the crankshaft are driven to rotate together by the rotation of the lathe spindle.
3) And clamping the polishing grinding wheel on a lathe tool rest, rotating the lathe, and enabling the tool rest to move back and forth, wherein the polishing grinding wheel on the tool rest can polish and grind the crank neck 3 of the crankshaft.
The large crankshaft is clamped by the invention to polish the crank neck, the surface of the crank neck is smooth and round, the roundness and the straightness of the crank neck are easier to ensure, and the production efficiency is high.
Claims (3)
1. Realize large-scale bent axle turning neck and throw clamping frock of grinding, its characterized in that: the left transmission shaft and the right transmission shaft are cylindrical at one end and square shaft bodies at the other end, and square grooves are formed in the square ends; the cylindrical end of the left transmission shaft and the cylindrical end of the right transmission shaft are inserted into an inner hole formed by combining the upper tile seat and the connecting seat and are fastened by using a connecting bolt; main journals at the left end and the right end of the crankshaft are respectively plugged into inner holes formed by combining the connecting seat and the lower tile seat and are fastened by connecting bolts; crank arms at the left end and the right end of the crankshaft are respectively plugged into square grooves at square ends of the left transmission shaft and the right transmission shaft and are fastened by screws; the center distance between the threaded holes of the connecting seat and the lower tile seat is the same, and the center distance between the inner holes at the upper end and the lower end of the connecting seat is 400mm as the eccentric distance of the crankshaft; when the crank neck of the crankshaft is clamped, the centers of the left transmission shaft and the right transmission shaft are concentric with the crank neck center of the crankshaft.
2. The clamping tool for realizing polishing and grinding of a large crankshaft turning neck according to claim 1, wherein the clamping tool is characterized in that: the clamping tool is made of 45# quenched and tempered steel.
3. The method for polishing the large crankshaft turning neck by using the clamping tool disclosed in claim 1 is characterized by comprising the following steps: the method comprises the following specific steps:
1) The method comprises the steps that a clamping tool for polishing and grinding a crank neck of a large-sized crankshaft and a crankshaft are integrally lifted onto a lathe after being installed, a lathe head chuck clamps a left transmission shaft, and a center hole of the left transmission shaft is propped up by a top; the lathe tail center is propped against the center hole of the right transmission shaft, so that the left transmission shaft, the right transmission shaft, the crank neck of the crankshaft and the lathe spindle are concentric;
2) The left transmission shaft, the right transmission shaft and the crankshaft are driven to rotate together through the rotation of the lathe spindle;
3) And clamping the polishing grinding wheel on a lathe tool rest, rotating the lathe, and enabling the tool rest to move back and forth, wherein the polishing grinding wheel on the tool rest can polish and grind the crank neck of the crankshaft to the required requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533526.0A CN109531304B (en) | 2018-12-14 | 2018-12-14 | Clamping tool capable of realizing polishing and grinding of crank neck of large-sized crankshaft and polishing and grinding method using clamping tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533526.0A CN109531304B (en) | 2018-12-14 | 2018-12-14 | Clamping tool capable of realizing polishing and grinding of crank neck of large-sized crankshaft and polishing and grinding method using clamping tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109531304A CN109531304A (en) | 2019-03-29 |
| CN109531304B true CN109531304B (en) | 2024-07-09 |
Family
ID=65856112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811533526.0A Active CN109531304B (en) | 2018-12-14 | 2018-12-14 | Clamping tool capable of realizing polishing and grinding of crank neck of large-sized crankshaft and polishing and grinding method using clamping tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109531304B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502801B (en) * | 2022-11-08 | 2023-03-24 | 广州越鑫曲轴制造有限公司 | Quick positioner of bent axle grinding based on image technique |
| CN115635374B (en) * | 2022-12-24 | 2023-04-07 | 潍坊胜利石化机械有限公司 | Fixing device for horizontal machine tool crankshaft machining |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209615027U (en) * | 2018-12-14 | 2019-11-12 | 武汉重工铸锻有限责任公司 | Achievable Large Crankshaft turns the clamping tooling of neck rubbing down |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB632567A (en) * | 1944-03-02 | 1949-11-28 | Norton Co | Crankshaft grinding machine |
| GB2321027B (en) * | 1994-05-27 | 1998-12-09 | Unova Uk Ltd | Improved grinding machine and method of grinding |
| CN200996449Y (en) * | 2007-01-11 | 2007-12-26 | 延边龙川包装机械有限公司 | Power outputting unit of automatic shackle maker |
| JP2015083329A (en) * | 2013-10-25 | 2015-04-30 | 住友重機械工業株式会社 | Method for manufacturing eccentric oscillation type speed reducer |
| CN106312813B (en) * | 2016-11-11 | 2018-06-15 | 桂林电子科技大学 | A kind of crankshaft-link rod diameter of axle processing tool system |
-
2018
- 2018-12-14 CN CN201811533526.0A patent/CN109531304B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209615027U (en) * | 2018-12-14 | 2019-11-12 | 武汉重工铸锻有限责任公司 | Achievable Large Crankshaft turns the clamping tooling of neck rubbing down |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109531304A (en) | 2019-03-29 |
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