CN111014747A - High-power-diameter hole series machining method - Google Patents
High-power-diameter hole series machining method Download PDFInfo
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- CN111014747A CN111014747A CN201911307146.XA CN201911307146A CN111014747A CN 111014747 A CN111014747 A CN 111014747A CN 201911307146 A CN201911307146 A CN 201911307146A CN 111014747 A CN111014747 A CN 111014747A
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- cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
Abstract
The invention relates to a high-power-diameter hole system processing method, which comprises the steps of selecting a cutter with the minimum boring value closest to the inner diameter of a processed hole according to the boring range of the cutter; reserving allowance for the rough-machined hole for adjustment during fine boring; during fine machining, high-speed cutting is replaced by low-speed cutting, cutting parameters and cutting force are set, machining precision is guaranteed, the design and machining requirements of products are met, and precision machining of high-diameter hole systems is achieved. In product development and small-batch production, the common connecting rod type boring cutter is used for processing high-diameter holes, so that the time for customizing a special cutter is reduced, the product manufacturing period is shortened, the production cost is saved, and the product development efficiency is improved.
Description
Technical Field
The invention belongs to the field of aluminum alloy box processing, and particularly relates to a high-power-diameter hole series processing method.
Background
The aluminum alloy box body is used as a core part in a transmission system, the structure is very complex, and the large-quantity high-diameter precision hole system distributed inside the aluminum alloy box body is high in design precision and large in processing difficulty. The porous material has a large number of suspended deep holes (diameter is less than 40mm and more than 10 times of diameter), the surface roughness of the holes is required to be more than Ra1.6, the dimensional accuracy is IT6 grade, the tolerance range is mostly within 0-0.013 mm, and the form and position tolerance is required to be 0.03mm/500 mm. Because the hole hangs deeply big, inner structure is complicated, receives the box structure restriction in the course of working, can't improve the cutter rigidity through increasing the cutter arbor diameter, and also can not increase the stability of cutter arbor through increasing unsteady centring means. During actual machining, the cutter and the part are prone to vibration, the cutter is separated from the original position, and vibration marks are generated on the surface of the part, so that the size and the surface roughness of the part are out of tolerance. And the vibration mark is larger along with the increase of the rotating speed, the out-of-tolerance phenomenon is more serious, the product quality requirement cannot be met, and the scrapping of parts is caused. Generally, floating boring cutters, high-precision hydraulic reamers, honing and coordinate grinding are adopted, the processing period is long, and the production progress is seriously influenced. Aiming at the parts, the floating boring cutter and the high-precision hydraulic reamer have high cost, and most of the floating boring cutter and the high-precision hydraulic reamer are over hundreds of thousands of parts; the honing and coordinate grinding methods have extremely low efficiency, and cannot be applied to actual processing.
Disclosure of Invention
The invention provides a high-power-diameter hole series processing method, which aims to solve the technical problems that: the design and processing requirements of products are met, and the high-power bore system precision processing of the comprehensive transmission case is realized.
In order to solve the technical problems, the invention provides a high-power bore series processing method, which is characterized by comprising the following steps: the method comprises the following specific steps:
s1, selecting a cutter with the minimum boring value closest to the inner diameter of the processed hole according to the boring range of the cutter;
s2, reserving a margin of 1-1.5 mm for the rough-machined hole for adjustment during fine boring;
s3, during finish machining, keeping the rotating speed of the main shaft controlled at 10-15 rpm; the feed amount of each tooth is 0.05-0.1 mm/min; the back bite amount is controlled to be 0.05-0.015 mm;
s4, judging whether the cutting force of the cutter can meet the product requirement or not through the cutting sound of the cutter in the cutting process;
and S5, if the cutting sound can not meet the processing requirement, finely adjusting the rotation speed and the feed quantity of the spindle through a spindle multiplying power switch.
Has the advantages that: the invention changes the traditional aluminum alloy box processing idea, replaces high-speed cutting with low-speed cutting, analyzes and calculates cutting factors such as cutting parameters, cutting force and the like, and actually verifies the cutting factors, and the common boring cutter replaces high-precision cutters such as floating or hydraulic cutters, so that a new processing device is not required to be designed, the processing precision is ensured, the design and processing requirements of products are met, and the precision processing of high-diameter hole systems is realized. In product development and small-batch production, the common connecting rod type boring cutter is used for processing high-diameter holes, so that the time for customizing a special cutter is reduced, the product manufacturing period is shortened, the production cost is saved, and the product development efficiency is improved.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
The invention provides a high-power-diameter hole system processing method, which comprises the following specific processes:
s1, selecting a cutter with the smallest boring value closest to the inner diameter of the hole to be machined according to the boring range of the cutter in the selection of the cutter, and ensuring that the cutter bar has good rigidity as much as possible, wherein two cutter specifications of 21-31mm and 30-40mm are available for machining a hole with the diameter of phi 30mm, and the cutter with the machining range of 30-40mm is selected;
s2, reserving a margin of 1-1.5 mm for the rough-machined hole for adjustment during fine boring;
s3, during finish machining, keeping the rotating speed of the main shaft controlled at 10-15 rpm; the feeding amount of each tooth is selected to be 0.05-0.1 mm/min; the back bite amount is controlled to be 0.05-0.015 mm; the dimensional accuracy and the surface roughness of the part are ensured;
s4, judging whether the cutting force of the cutter can meet the product requirement or not through the cutting sound of the cutter in the cutting process, wherein the cutting sound can meet the processing requirement when controlled below 25 decibels;
s5, if the cutting sound can not meet the processing requirement, finely adjusting the rotating speed and the feed quantity of the spindle through a spindle multiplying power switch on a machine tool panel, and controlling the dimensional accuracy and the surface roughness of the part;
and S6, cooling liquid is used in the machining process to prevent the generation of built-up edges. Meanwhile, the continuity of the use state of the cooling liquid is kept in the cutting process, so that the consistency of the sizes of the parts is ensured.
The invention adopts low-speed cutting to analyze and calculate cutting parameters, cutting force and other cutting factors and actually verify the cutting parameters, the cutting force and other cutting factors so as to meet the design and processing requirements of products and realize the high-power bore series precision processing of the comprehensive transmission case. In product development and small-batch production, the common connecting rod type boring cutter is used for processing high-diameter holes, so that the time for customizing a special cutter is reduced, the product manufacturing period is shortened, the production cost is saved, and the product development efficiency is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A high-power bore series processing method is characterized in that: the method comprises the following specific steps:
s1, selecting a cutter with the minimum boring value closest to the inner diameter of the processed hole according to the boring range of the cutter;
s2, reserving a certain allowance for the rough-machined hole for adjustment during fine boring;
s3, during finish machining, keeping the rotating speed of the main shaft controlled at 10-15 rpm; the feed amount of each tooth is 0.05-0.1 mm/min; the back bite amount is controlled to be 0.05-0.015 mm;
s4, judging whether the cutting force of the cutter can meet the product requirement or not through the cutting sound of the cutter in the cutting process;
and S5, if the cutting sound can not meet the processing requirement, finely adjusting the rotation speed and the feed quantity of the spindle through a spindle multiplying power switch.
2. The method for machining a high-power hole system according to claim 1, wherein: the cutting sound can be controlled below 25 dB to meet the processing requirement.
3. The method for machining a high-power hole system according to claim 1, wherein: the cooling liquid is used in the processing process.
4. The method for machining a high-power hole system according to claim 3, wherein: the continuity of the use state of the coolant should be maintained during the cutting process.
5. The method for machining a high-power hole system according to any one of claims 1 to 4, wherein: and reserving 1-1.5 mm of allowance for the rough-machined hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307146.XA CN111014747A (en) | 2019-12-18 | 2019-12-18 | High-power-diameter hole series machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307146.XA CN111014747A (en) | 2019-12-18 | 2019-12-18 | High-power-diameter hole series machining method |
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| Publication Number | Publication Date |
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| CN111014747A true CN111014747A (en) | 2020-04-17 |
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| CN201911307146.XA Pending CN111014747A (en) | 2019-12-18 | 2019-12-18 | High-power-diameter hole series machining method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004337997A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Materials Corp | Stepped deep hole machining method and stepped drill |
| CN104001958A (en) * | 2014-05-13 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Machining method for deep hole reducing inner cavity |
| CN104440447A (en) * | 2014-10-30 | 2015-03-25 | 芜湖市和蓄机械股份有限公司 | Portable casting grinding machine |
| CN105921776A (en) * | 2016-03-25 | 2016-09-07 | 哈尔滨飞机工业集团有限责任公司 | Method to make standard surface roughness by boring aluminum alloy |
| CN107756138A (en) * | 2016-08-18 | 2018-03-06 | 王智中 | Cutting tool state online test method and equipment |
| CN108994352A (en) * | 2018-09-03 | 2018-12-14 | 贵阳博亚机械制造有限公司 | A kind of aluminium alloy inner hole microstoning cutter and processing method |
| CN109696478A (en) * | 2018-11-27 | 2019-04-30 | 福建省嘉泰智能装备有限公司 | A kind of monitoring method of combination acoustic emission energy and lathe information |
-
2019
- 2019-12-18 CN CN201911307146.XA patent/CN111014747A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004337997A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Materials Corp | Stepped deep hole machining method and stepped drill |
| CN104001958A (en) * | 2014-05-13 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Machining method for deep hole reducing inner cavity |
| CN104440447A (en) * | 2014-10-30 | 2015-03-25 | 芜湖市和蓄机械股份有限公司 | Portable casting grinding machine |
| CN105921776A (en) * | 2016-03-25 | 2016-09-07 | 哈尔滨飞机工业集团有限责任公司 | Method to make standard surface roughness by boring aluminum alloy |
| CN107756138A (en) * | 2016-08-18 | 2018-03-06 | 王智中 | Cutting tool state online test method and equipment |
| CN108994352A (en) * | 2018-09-03 | 2018-12-14 | 贵阳博亚机械制造有限公司 | A kind of aluminium alloy inner hole microstoning cutter and processing method |
| CN109696478A (en) * | 2018-11-27 | 2019-04-30 | 福建省嘉泰智能装备有限公司 | A kind of monitoring method of combination acoustic emission energy and lathe information |
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Application publication date: 20200417 |
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| RJ01 | Rejection of invention patent application after publication |