CN103447833A - PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method - Google Patents
PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method Download PDFInfo
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- CN103447833A CN103447833A CN2013103489706A CN201310348970A CN103447833A CN 103447833 A CN103447833 A CN 103447833A CN 2013103489706 A CN2013103489706 A CN 2013103489706A CN 201310348970 A CN201310348970 A CN 201310348970A CN 103447833 A CN103447833 A CN 103447833A
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- rotating sleeve
- endoporus
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- rotational sleeve
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Abstract
A PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method includes the steps: enabling a machine tool to clamp a blank, and subjecting an outer circle and an inner hole of a rotating sleeve to rough turning; subjecting the outer circle, the inner hole and an end face of each level of the rotating sleeve to semi-finish turning, and reserving a small amount of allowance for finish to be subjected to finish machining; using a slotting cutter for performing preliminary slot turning on a to-be-cut position of the blank according to the length of the rotating sleeve, and ensuring the bottom of a slot and the wall of the inner wall to be appropriate in thickness; performing finish turning on all of the outer circle, the inner hole and the end face of the rotating sleeve to required sizes of parts; cutting at the position of the slot according to the length of the rotating sleeve, and completing machining. Due to preliminary slot turning at the to-be-cut position of the rotating sleeve, deformation of the parts is reduced.
Description
Technical field
The present invention relates to a kind of PTFE plastic part machining process, particularly a kind of PTFE plastic rotary sleeve machining process.
Background technology
Centrifugal aeration air blower is a kind of high-end turbomachine equipment, is widely used in sewage treatment industry, is the crucial plant equipment of sewage disposal.The quality of centrifugal aeration air blower running quality, be directly connected to security and the economy of sewage disposal process, also is directly connected to the qualified discharge of effluent quality after sewage disposal.
As shown in Figure 1, during this equipment forms, it is the diffuser system parts that one critical component is arranged, play the effect of the secondary air diffusion of centrifugal aeration air blower, and in the diffusion process, diffuser vane is to adjust in time the air-flow size according to variations in flow, the key that wherein supports the diffuser vane rotation is rotational sleeve.So design, processing to rotational sleeve seem particularly important, it is related to final service property (quality) and the effect of product.
Rotate guide and be designed to the earliest the copper material rotational sleeve, handling ease, but because of medium, be gas in using, and contain large quantity of moisture and impurity in gas, cause the rotational sleeve of copper material oxidized in running, the reasons such as generation mucous membrane cause the diffusion mechanism blockage, and diffusion is adjusted out of control.Test, now change the PTFE(polytetrafluoroethylene (PTFE) into by analysis) after the plastic rotary sleeve, effectively avoided the oxidation of copper material rotational sleeve and stuck phenomenon.But because the change of material sharply increases the processing technology difficulty, so the processing technology of the rotational sleeve that to capture material be PTFE is particularly main.
As shown in Figure 3, existing processing technology is: machine tool is clamped in PTFE plastics 6 near the position that will process, the cylindrical 2 of rough turn rotational sleeve 1 and endoporus 3, then the cylindrical 2 of finish turning rotational sleeve 1, endoporus and end face 4, finally directly cut off by the overall length of rotational sleeve 1.
This process is simple, easy to operate.But cut off after fine turning outer circle and endoporus at once, easily cause having dimensional accuracy and the accuracy of form and position variation of the rotational sleeve of fine dimensional accuracy and the accuracy of form and position, when serious, directly cause part to be scrapped, essentially no certified products.And the engine lathe machining accuracy is poor, the high-precision size of turning and form and position tolerance precision can't be guaranteed.
Summary of the invention
In prior art, processing PTFE plastic rotary sleeve dimensions precision and the accuracy of form and position is poor, the technical problem that even causes part to be scrapped, the purpose of this invention is to provide a kind of PTFE plastic rotary sleeve machining process, the method is by the first pre-turning groove in the position that will cut off on the PTFE plastics, the internal stress of part is fully discharged, thereby reduced the distortion of rotational sleeve.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of PTFE plastic rotary sleeve machining process comprises the following steps:
Each grade of cylindrical of step 2. half finish turning rotational sleeve, endoporus and end face, stay a small amount of allowance for finish finally to process;
All cylindricals, endoporus and end face to the part of step 4. finish turning rotational sleeve requires size;
Step 5. is cut according to the length of rotational sleeve in the position of groove, machines.
Preferably, in step 3, the bottom land of groove to the monolateral thickness d of inner hole wall is 0.5～1mm.
Preferably, in step 2, monolateral allowance for finish is 0.1～0.2mm.
Preferentially, roughing adopts engine lathe, and fine finishining adopts Digit Control Machine Tool to be processed.
Useful technique effect of the present invention is:
1. the first pre-turning groove in the position that will cut at rotational sleeve, guarantee bottom land to inner hole wall is monolateral 0.5～1mm entity is arranged after, the internal stress of part is fully discharged, reduced the distortion of part;
2. in fine finishining, first adopt each grade of cylindrical of half finish turning rotational sleeve, hole and end face, stay the last fine finishining of a small amount of allowance for finish, solved fine finishining in prior art and once completed and cause stress to concentrate, and then caused the problem of rotational sleeve distortion;
3. adopt numerically controlled lathe in fine finishining, machining accuracy, far above engine lathe, therefore easily guarantees dimensional accuracy and the form and position tolerance precision of rotational sleeve;
4. finally reduce all cylindricals of finish turning, endoporus and end face under the concentrated condition of part stress, then cutting off by part length in the external of turning groove, guaranteeing dimensional accuracy and the form and position tolerance precision of part fully.
The accompanying drawing explanation
Fig. 1 is the rotational sleeve structural representation;
Fig. 2 is former machining sketch chart;
Fig. 3 is machining sketch chart after improving.
Reference numeral
1. rotational sleeve 2. cylindrical 3. endoporus
4. end face 5. groove 6. blanks
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further details.
As shown in Figure 1, rotational sleeve 1 comprises cylindrical 2, endoporus 3 and end face 4.
As shown in Figure 3, PTFE plastic rotary sleeve machining process of the present invention comprises the following steps:
All cylindricals 2 of step 4. finish turning rotational sleeve 1, endoporus 3 and end face 4 to part requires size;
Step 5. is cut according to the length of rotational sleeve 1 in the position of groove 5, completes processing.
In the present embodiment, the bottom land of groove 5 to the monolateral thickness d of endoporus 3 hole wall is 0.5～1mm; After half finish turning, monolateral allowance for finish is 0.1～0.2mm.
PTFE plastic rotary sleeve machining process of the present invention, roughing adopts engine lathe, and fine finishining adopts Digit Control Machine Tool to be processed.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. a PTFE plastic rotary sleeve machining process comprises the following steps:
Step 1. lathe clamping blank (6), the cylindrical (2) of rough turn rotational sleeve (1) and endoporus (3);
Step 2. half each grade of cylindrical of finish turning rotational sleeve (1) (2), endoporus (3) and end face (4), stay a small amount of allowance for finish finally to process;
Step 3. is according to the length of rotational sleeve (1), and the position that will cut off at blank (6) is with cutting the pre-turning groove of groove cutter (5), and the bottom land of assurance groove (5) to the hole wall of endoporus (3) has suitable thickness;
All cylindricals (2) of step 4. finish turning rotational sleeve (1), endoporus (3) and end face (4) to part requires size;
Step 5. is cut according to the length of rotational sleeve (1) in the position of groove (5), machines.
2. PTFE plastic rotary sleeve machining process according to claim 1, it is characterized in that: in step 3, the bottom land of groove (5) to the monolateral thickness d of endoporus (3) wall is 0.5～1mm.
3. PTFE plastic rotary sleeve machining process according to claim 1, it is characterized in that: in step 2, monolateral allowance for finish is 0.1～0.2mm.
4. PTFE plastic rotary sleeve machining process according to claim 1 is characterized in that: roughing adopts engine lathe, and fine finishining adopts Digit Control Machine Tool to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348970.6A CN103447833B (en) | 2013-08-12 | 2013-08-12 | PTFE plastic rotary sleeve machining process |
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| CN201310348970.6A CN103447833B (en) | 2013-08-12 | 2013-08-12 | PTFE plastic rotary sleeve machining process |
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| CN103447833A true CN103447833A (en) | 2013-12-18 |
| CN103447833B CN103447833B (en) | 2016-08-10 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028782A (en) * | 2014-06-06 | 2014-09-10 | 中国南方航空工业(集团)有限公司 | Lathe machining method for end face deep narrow groove in aerial engine crankcase |
| CN104588978A (en) * | 2014-11-25 | 2015-05-06 | 吴中区长桥诚惠机械加工厂 | Sleeve machining process |
| CN105945623A (en) * | 2016-05-27 | 2016-09-21 | 镇江市星球流体控制设备有限公司 | Machining method for front clamping sleeve of clamping sleeve pipe connector |
| CN106735316A (en) * | 2016-11-17 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of method for turning of inner hole deep groove |
| WO2019109282A1 (en) * | 2017-12-07 | 2019-06-13 | 徐文胜 | Method for processing polytetrafluoroethylene temperature-resistant gasket with steel lining, and product |
| CN110549072A (en) * | 2019-09-28 | 2019-12-10 | 贵州航天精工制造有限公司 | Machining method for cutting off hollow workpiece |
| CN110757105A (en) * | 2019-11-13 | 2020-02-07 | 中国航发动力股份有限公司 | Machining method of thin-wall sleeve type part |
| CN112453432A (en) * | 2020-11-30 | 2021-03-09 | 江苏太平洋齿轮传动有限公司 | Method for cutting vehicle gear ring blank in sleeving manner |
| CN114160819A (en) * | 2022-02-15 | 2022-03-11 | 丹棱联合机械实业有限公司 | High-efficiency continuous machining system and method for numerical control machine tool |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028782A (en) * | 2014-06-06 | 2014-09-10 | 中国南方航空工业(集团)有限公司 | Lathe machining method for end face deep narrow groove in aerial engine crankcase |
| CN104588978A (en) * | 2014-11-25 | 2015-05-06 | 吴中区长桥诚惠机械加工厂 | Sleeve machining process |
| CN105945623A (en) * | 2016-05-27 | 2016-09-21 | 镇江市星球流体控制设备有限公司 | Machining method for front clamping sleeve of clamping sleeve pipe connector |
| CN106735316A (en) * | 2016-11-17 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of method for turning of inner hole deep groove |
| WO2019109282A1 (en) * | 2017-12-07 | 2019-06-13 | 徐文胜 | Method for processing polytetrafluoroethylene temperature-resistant gasket with steel lining, and product |
| CN110549072A (en) * | 2019-09-28 | 2019-12-10 | 贵州航天精工制造有限公司 | Machining method for cutting off hollow workpiece |
| CN110757105A (en) * | 2019-11-13 | 2020-02-07 | 中国航发动力股份有限公司 | Machining method of thin-wall sleeve type part |
| CN112453432A (en) * | 2020-11-30 | 2021-03-09 | 江苏太平洋齿轮传动有限公司 | Method for cutting vehicle gear ring blank in sleeving manner |
| CN112453432B (en) * | 2020-11-30 | 2023-12-19 | 江苏太平洋齿轮传动有限公司 | Method for cutting gear ring blank for vehicle |
| CN114160819A (en) * | 2022-02-15 | 2022-03-11 | 丹棱联合机械实业有限公司 | High-efficiency continuous machining system and method for numerical control machine tool |
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| CN103447833B (en) | 2016-08-10 |
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