CN111515859A - Method for quickly adjusting main shaft runout of grinding head - Google Patents
Method for quickly adjusting main shaft runout of grinding head Download PDFInfo
- Publication number
- CN111515859A CN111515859A CN202010512246.2A CN202010512246A CN111515859A CN 111515859 A CN111515859 A CN 111515859A CN 202010512246 A CN202010512246 A CN 202010512246A CN 111515859 A CN111515859 A CN 111515859A
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- CN
- China
- Prior art keywords
- main shaft
- grinding head
- nut
- eliminated
- jumping
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
A method for quickly adjusting the bounce of a main shaft of a grinding head comprises the steps of firstly finding a point B with the largest bending on the main shaft by a dial indicator, then translating to a position B 'corresponding to a nut, padding the position B' with a hardwood or a red copper bar, slightly tapping by a hammer, then checking the bounce amount, and if the position B is not qualified, repeating the steps for adjustment; the thread fit clearance between the nut and the main shaft is reduced or eliminated, so that the P1 and P2 forces are equal, and the bending moment borne by the main shaft is eliminated; the invention can be adjusted by only three to five minutes, can save the time for repeated adjustment and grinding matching, improves the work efficiency by dozens of times or even hundreds of times, and can adjust the jumping quantity of the main shaft of the grinding head to be within the range of 0-0.004 mm.
Description
Technical Field
The invention relates to a method for quickly adjusting the runout of a main shaft of a grinding head.
Background
Repairing a grinding head of the grinding machine, and after disassembly and assembly, requiring that the jumping quantity of a main shaft of the assembled grinding head is not more than 0.005mm because the rotating speed of the grinding head is high; under the condition that the manufacturing precision of each part of the grinding head is ensured, the maximum 0.005mm out-of-tolerance of the jumping quantity of the main shaft of the assembled grinding machine cannot be ensured; the assembly is qualified only by repeated disassembly, assembly and repair and long time; long time and low efficiency.
Because the nut 2 is screwed with the main shaft 1, the nut 2 is matched with the threads of the main shaft 1 by a gap, the middle diameter is eccentric after the nut 2 is locked, two pressures P1 and P2 (as shown in figure 1) are arranged on the end surface of the nut 2, the lower end threads are tightly attached without the gap, the P1 force is large, the upper end threads have the gap, the P2 force is small, and the P1 and the P2 have different sizes, so that a bending moment about (P1-P2) multiplied by the thread diameter is generated to act on the main shaft 1. The main shaft 1 is bent in the direction B (as shown in fig. 1) due to the bending moment, resulting in an out-of-tolerance of 0.005mm at maximum for the run-out of the main shaft 1.
Disclosure of Invention
The invention aims to solve the problems that after the grinding head of the existing grinding machine is repaired and disassembled and assembled, the jumping quantity of the main shaft of the assembled grinding head is required to be not more than 0.005mm because the rotating speed of the grinding head is high; under the condition that the manufacturing precision of each part of the grinding head is ensured, the maximum 0.005mm out-of-tolerance of the jumping quantity of the main shaft of the assembled grinding machine cannot be ensured; the assembly is qualified only by repeated disassembly, assembly and repair and long time; long time and low efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for quickly adjusting the bounce of a main shaft of a grinding head comprises the steps of firstly finding a point B with the largest bending on the main shaft by a dial indicator, then translating to a position B 'corresponding to a nut, padding the position B' with a hardwood or a red copper bar, slightly tapping by a hammer, then checking the bounce amount, and if the position B is not qualified, repeating the steps for adjustment; the thread fit clearance between the nut and the main shaft is reduced or eliminated, so that the P1 and P2 forces are equal, and the bending moment borne by the main shaft is eliminated; when the grinding head is used for a period of time, the jumping of the grinding head can be out of tolerance, and the precision can be quickly recovered by using the method.
Adopt above-mentioned technical scheme's beneficial effect:
the invention can be adjusted by only three to five minutes, can save the time for repeated adjustment and grinding matching, improves the work efficiency by dozens of times or even hundreds of times, and can adjust the jumping quantity of the main shaft of the grinding head to be within the range of 0-0.004 mm.
Drawings
Fig. 1 is a schematic diagram of the method for rapidly adjusting the grinding head spindle runout.
In the figure: 1-main shaft, 2-nut, 3-bistrique subassembly.
Detailed Description
The invention is further described below with reference to specific embodiments:
as shown in figure 1, a method for quickly adjusting the bounce of a main shaft of a grinding head comprises the steps of firstly finding a point B with the maximum bending on the main shaft 1 by using a dial indicator, then translating to a position B 'corresponding to a nut 2, padding the position B' with a hardwood or a red copper bar, slightly tapping by using a hammer, then checking the bounce amount, and if the position is not qualified, repeating the steps for adjustment; the thread fit clearance between the nut 2 and the main shaft 1 is reduced or eliminated, so that the P1 force and the P2 force are equal, and the bending moment applied to the main shaft 1 is eliminated. When the grinding head is used for a period of time, the jumping of the grinding head can be out of tolerance, and the precision can be quickly recovered by using the method.
Claims (1)
1. A method for quickly adjusting the jumping of a main shaft of a grinding head is characterized in that: firstly, finding a point B of the maximum bending on the main shaft (1) by using a dial indicator, translating to a position B 'corresponding to the nut (2), cushioning the position B' by using a hardwood or a red copper bar, slightly tapping by using a hammer, checking the jumping amount, and if the jumping amount is not qualified, repeating the steps for adjustment; the thread fit clearance between the nut (2) and the main shaft (1) is reduced or eliminated, so that the P1 and P2 forces are equal, and the bending moment borne by the main shaft (1) is eliminated; when the grinding head is used for a period of time, the jumping of the grinding head can be out of tolerance, and the precision can be quickly recovered by using the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512246.2A CN111515859A (en) | 2020-06-08 | 2020-06-08 | Method for quickly adjusting main shaft runout of grinding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512246.2A CN111515859A (en) | 2020-06-08 | 2020-06-08 | Method for quickly adjusting main shaft runout of grinding head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111515859A true CN111515859A (en) | 2020-08-11 |
Family
ID=71911506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010512246.2A Pending CN111515859A (en) | 2020-06-08 | 2020-06-08 | Method for quickly adjusting main shaft runout of grinding head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111515859A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202833677U (en) * | 2012-08-31 | 2013-03-27 | 中电电机股份有限公司 | Installment clearance adjustment bush for spherical roller bearing |
| CN103192224A (en) * | 2013-04-20 | 2013-07-10 | 韶关市龙润工业技术有限公司 | Metallurgical continuous casting machine roller repairing method |
| CN103506799A (en) * | 2012-06-21 | 2014-01-15 | 五冶集团上海有限公司 | Jack-type large diameter pipe orifice aligning device and using method |
| CN103722355A (en) * | 2013-12-27 | 2014-04-16 | 宝钢特钢有限公司 | Method for assembling duplicate gear for roller of seamless steel tube cold rolling mill |
| CN106964974A (en) * | 2017-04-17 | 2017-07-21 | 哈尔滨电气动力装备有限公司 | The process of nuclear power station axle envelope main pump shafting bounce adjustment |
-
2020
- 2020-06-08 CN CN202010512246.2A patent/CN111515859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506799A (en) * | 2012-06-21 | 2014-01-15 | 五冶集团上海有限公司 | Jack-type large diameter pipe orifice aligning device and using method |
| CN202833677U (en) * | 2012-08-31 | 2013-03-27 | 中电电机股份有限公司 | Installment clearance adjustment bush for spherical roller bearing |
| CN103192224A (en) * | 2013-04-20 | 2013-07-10 | 韶关市龙润工业技术有限公司 | Metallurgical continuous casting machine roller repairing method |
| CN103722355A (en) * | 2013-12-27 | 2014-04-16 | 宝钢特钢有限公司 | Method for assembling duplicate gear for roller of seamless steel tube cold rolling mill |
| CN106964974A (en) * | 2017-04-17 | 2017-07-21 | 哈尔滨电气动力装备有限公司 | The process of nuclear power station axle envelope main pump shafting bounce adjustment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200811 |