CN104259754A - Impeller pull rod machining method - Google Patents
Impeller pull rod machining method Download PDFInfo
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- CN104259754A CN104259754A CN201410395933.5A CN201410395933A CN104259754A CN 104259754 A CN104259754 A CN 104259754A CN 201410395933 A CN201410395933 A CN 201410395933A CN 104259754 A CN104259754 A CN 104259754A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention belongs to the field of machining, and particularly relates to an impeller pull rod machining method. The impeller pull rod machining method is characterized by including: subjecting to a blank to thermal treating and tempering; roughly turning outer circles and end faces of a positioning end; roughly turning outer circles and end faces of a pressing end; performing ultrasonic flow detection; grinding the outer circles of each grade and positioning the two end faces of each outer circle; tapping an inner thread hole and a chamfer of the pressing end; finely turning outer threads at two ends; milling flat potential; bench workers deburring and inspecting the external threads especially at the position of the flat potential; performing surface penetrant inspection and comprehensive inspection. With the impeller pull rod machining method, coaxiality of the outer circle and thread as well as thread accuracy requirements on the external thread is guaranteed, and yield of impeller rods reaches up to 100%.
Description
Technical field
The invention belongs to Machining Technology field, be specifically related to a kind of impeller pull bar processing method.
Background technology
The processing method of existing impeller pull bar generally comprises following steps: 1, heat-treated by blank modified; 2 rough turn each end face and cylindricals; 3, ultrasonic examination; 4, each end face of finish turning and cylindrical; 5, the flat gesture of milling; 6, finish turning external screw thread and tapped blind hole, chamfering; 7, pincers worker deburring; 8, surface penetration inspection; 9, comprehensive test.In existing impeller pull bar processing method, by procedure of processing first in the flat gesture of step 5 milling, then external threading in step 6, owing to being interrupted cut processing, external screw thread tolerance does not reach the accuracy of thread class requirement of drawing.In addition, step 6 threading and tapped blind hole, chamfering, two step twice clampings must be divided to correct and to process two ends external screw thread and tapped blind hole, chamfering, because correction position is turnery processing, cause repetitive positioning accuracy poor, not easily correct, cause the pull bar axiality of processing easily overproof, do not reach the axiality requirement of drawing.Meanwhile, rough turn and step 4 finish turning of step 2 all uses engine lathe, and engine lathe equipment precision is not high, and this impeller pull bar is 1:20 thin and long shafts part, difficulty of processing is large, product percent of pass and production efficiency low, existing product percent of pass is only 60-70%
Summary of the invention
In order to solve in prior art, the external screw thread low precision of impeller pull bar and the technical problem of two ends external screw thread axiality difference, the object of this invention is to provide a kind of impeller pull bar processing method, the method, by adjusting the process sequence of finish turning two ends external screw thread and the flat gesture of milling, solves the technical problem of impeller pull bar external screw thread low precision; By increasing grinding process, solving the technical problem of impeller pull bar two ends external screw thread axiality difference, product percent of pass is improved greatly.
The object of the invention is to be achieved through the following technical solutions:
A kind of impeller pull bar processing method: comprise the following steps:
1) blank is heat-treated modified;
2) each cylindrical of rough turn positioning end and end face, centering;
3) the rough turn compression each cylindrical of end and end face, centering;
4) ultrasonic examination;
5) both ends of the surface of each shelves cylindrical and location cylindrical are ground;
6) internal thread hole, the car chamfering that compress end is attacked;
7) finish turning compresses the external screw thread of end and positioning end;
8) the flat gesture of external screw thread milling of end is compressed;
9) pincers worker deburring, inspection external screw thread particularly compress the flat gesture place of milling of end;
10) surface penetration inspection;
11) comprehensive test.
Further, in step 2) in, the cylindrical of rough turn positioning end screw thread cylindrical and optical axis, stays a small amount of grinding allowance; In step 3) in, the rough turn both ends of the surface compressing end screw thread cylindrical, location cylindrical and location cylindrical, stay a small amount of grinding allowance; In step 5) in grinding step 2) and step 3) rough turn after each cylindrical and locate the both ends of the surface of cylindrical.Ensure that the axiality requirement of screw thread cylindrical, thus improve the qualification rate of impeller pull bar.
Further, in step 6) in adopt soft three-jaw folder step 5) in ground location cylindrical, by the flat location circle end face O ground near optical axis, correct to have ground and compress end screw thread cylindrical and beat be not more than 0.01 near compressing the location circle end face P held, attack and compress end internal thread hole, car chamfering.Ensure that the axiality requirement of internal thread hole, ensure the requirement of postorder external screw thread axiality further, thus improve the qualification rate of impeller pull bar.
Further, in step 7) in adopt soft three-jaw folder step 5) in having ground location cylindrical, having ground near compressing the location circle end face P held by flat, correct to have ground positioning end screw thread cylindrical and beated near the location circle end face O of optical axis and be not more than 0.01, car positioning end external screw thread; By soft three-jaw folder step 5) in ground location cylindrical, by the flat location circle end face O ground near optical axis, correct to have ground to compress end screw thread cylindrical and beat near the location circle end face P compressing end and be not more than 0.01, car compresses holds external screw thread.The correction accuracy that repeated clamping is located can be ensured, ensure externally threaded axiality requirement further, thus improve the qualification rate of impeller pull bar.
Beneficial effect of the present invention:
Due to after rough turn each cylindrical and end face step, attack compress end internal thread hole, before chamfering and finish turning external screw thread step, add grinding process, a small amount of grinding allowance that when grinding is rough turn, each cylindrical and end face leave, thus ensure that the correction accuracy of postorder finish turning internal thread hole and chamfering, the externally threaded repeated clamping location of finish turning, meet externally threaded axiality requirement; After flat for milling gesture step is adjusted to finish turning external screw thread step, can not there is interrupted cut problem, subsequent step pincers worker simultaneously can be removed the external screw thread burr at the flat gesture place of milling and reexamine external screw thread, ensure that the requirement of external screw thread accuracy class; Therefore, processing method involved in the present invention greatly improves the qualification rate of impeller pull bar, and through inspection, the qualification rate of impeller pull bar reaches 100%; On the other hand, use CNC Lathe Turning, reduce the difficulty of processing, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of impeller pull bar blank.
Fig. 2 is the half-finished structural representation of impeller pull bar.
Fig. 3 is the structural representation of impeller pull bar finished product.
Fig. 4 is that Fig. 3 H is to schematic diagram.
Reference numeral:
1-compresses end; 2-positioning end; 3-optical axis; 4-positioning end screw thread cylindrical; 5-compresses end screw thread cylindrical;
6-locates cylindrical; 7-internal thread hole; 8-positioning end external screw thread; 9-compresses end external screw thread; The flat gesture of 10-
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further details.
As shown in Figure 1, Figure 2 with shown in Fig. 3 institute Fig. 4, impeller pull bar processing method of the present invention, comprises the following steps: 1) heat-treated by blank modified;
2) each cylindrical of rough turn positioning end 2 and end face, centering;
3) each cylindrical of rough turn compression end 1 and end face, centering;
4) ultrasonic examination;
5) both ends of the surface of each shelves cylindrical and location cylindrical 6 are ground;
6) internal thread hole 7, the car chamfering that compress end 1 is attacked;
7) finish turning compresses the external screw thread of end 1 and positioning end 2;
8) the flat gesture of external screw thread milling of end 1 is compressed;
9) pincers worker deburring, inspection external screw thread particularly compress the flat gesture place of milling of end 1;
10) surface penetration inspection;
11) comprehensive test.
In step 2) in, adopt numerically controlled lathe, clip hold-down end 1 blank cylindrical, centering, light-seeking end 2 end face, centering, clip hold-down end 1 blank cylindrical, top centre bore, the cylindrical of rough turn positioning end screw thread cylindrical 4 and optical axis 3, stays a small amount of grinding allowance;
In step 3) in, adopt numerically controlled lathe, optical axis 3 cylindrical of folder positioning end 1, outer round the beating of centering optical axis 3 is not more than 0.02 rear car optical axis 3 cylindrical to positioning end 2, centering, top centre bore, rough turn compression end screw thread cylindrical 5 and location cylindrical 6 and location circle end face O end face P, stay a small amount of grinding allowance;
In step 5) in, push up through step 4) centre bore of the qualified rough turn impeller pull bar both ends of the surface of ultrasonic examination, grinding positioning end screw thread cylindrical 4, optical axis 3 cylindrical and compress end screw thread cylindrical 5, location cylindrical 6 and location circle end face O end face P;
In step 6) middle employing numerically controlled lathe, by soft three-jaw folder step 5) in ground location cylindrical 6, by the flat location circle end face O ground near optical axis 3, correct to have ground to compress end screw thread cylindrical 5 and beat near the location circle end face P compressing end and be not more than 0.01, attack and compress end internal thread hole 7, car chamfering;
In step 7) in adopt soft three-jaw folder step 5) in having ground location cylindrical 6, having ground near compressing the location circle end face P held by flat, correct to have ground positioning end screw thread cylindrical 4 and beated near the location circle end face O of optical axis 3 and be not more than 0.01, car positioning end external screw thread 8; By soft three-jaw folder step 5) in ground location cylindrical 6, by the flat location circle end face O ground near optical axis 3, correct to have ground to compress end screw thread cylindrical 5 and beat near the location circle end face P compressing end and be not more than 0.01, car compresses holds external screw thread 9;
In step 8) in milling step 7) car compress end external screw thread 9 flat gesture 10;
In step 9) in, pincers worker deburring, inspection external screw thread particularly compress milling flat gesture 10 position of end external screw thread 9.
Claims (4)
1. an impeller pull bar processing method, is characterized in that, comprises the following steps:
1) blank is heat-treated modified;
2) rough turn positioning end (2) each cylindrical and end face, centering;
3) rough turn compression end (1) each cylindrical and end face, centering;
4) ultrasonic examination;
5) both ends of the surface of each shelves cylindrical and location cylindrical (6) are ground;
6) internal thread hole (7), the car chamfering that compress end (1) is attacked;
7) finish turning compresses the external screw thread of end (1) and positioning end (2);
8) the flat gesture of external screw thread milling of end (1) is compressed;
9) pincers worker deburring, inspection external screw thread particularly compress the flat gesture place of milling of end (1);
10) surface penetration inspection;
11) comprehensive test.
2. impeller pull bar processing method as claimed in claim 1, is characterized in that: in step 2) in, the cylindrical of rough turn positioning end screw thread cylindrical (4) and optical axis (3), stays a small amount of grinding allowance; In step 3) in, the rough turn both ends of the surface compressing end screw thread cylindrical (5), location cylindrical (6) and locate cylindrical, stay a small amount of grinding allowance; In step 5) in grinding step 2) and step 3) rough turn after each cylindrical and locate the both ends of the surface of cylindrical.
3. impeller pull bar processing method as claimed in claim 1, it is characterized in that: in step 6) in adopt soft three-jaw folder step 5) in ground location cylindrical (6), by the flat location circle end face O ground near optical axis (3), correct to have ground to compress end screw thread cylindrical (5) and beat near the location circle end face P compressing end and be not more than 0.01, attack and compress end internal thread hole (7), car chamfering.
4. impeller pull bar processing method as claimed in claim 1, it is characterized in that: in step 7) in adopt soft three-jaw folder step 5) in having ground location cylindrical (6), having ground near compressing the location circle end face P held by flat, correct to have ground positioning end screw thread cylindrical (4) and beated near the location circle end face O of optical axis (3) and be not more than 0.01, car positioning end external screw thread (8); By soft three-jaw folder step 5) in ground location cylindrical (6), by the flat location circle end face O having ground close optical axis (3), correct to have ground to compress end screw thread cylindrical (5) and beat near the location circle end face P compressing end and be not more than 0.01, car compresses end external screw thread (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395933.5A CN104259754B (en) | 2014-08-12 | 2014-08-12 | Impeller pull rod machining method |
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| CN201410395933.5A CN104259754B (en) | 2014-08-12 | 2014-08-12 | Impeller pull rod machining method |
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| CN104259754A true CN104259754A (en) | 2015-01-07 |
| CN104259754B CN104259754B (en) | 2017-02-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014312A (en) * | 2015-06-04 | 2015-11-04 | 昆明新道为机械制造有限公司 | Processing method for fork-shaped pull rods |
| CN106286621A (en) * | 2016-10-28 | 2017-01-04 | 重庆江增船舶重工有限公司 | A kind of main shaft, half a coupler attachment structure and installation and removal method thereof |
| CN110605544A (en) * | 2019-09-23 | 2019-12-24 | 重庆江增船舶重工有限公司 | Method for machining nozzle ring blade |
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| CN103386590A (en) * | 2013-07-16 | 2013-11-13 | 江苏亚梅泵业集团有限公司 | Processing method of chemical centrifugal pump shaft |
| CN103418999A (en) * | 2013-09-05 | 2013-12-04 | 湖北神力汽车半轴有限公司 | Automobile axle shaft machining technique |
| CN103737270A (en) * | 2013-12-04 | 2014-04-23 | 鞠小平 | Method for machining input shaft of main reducing gear of heavy load automobile |
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2014
- 2014-08-12 CN CN201410395933.5A patent/CN104259754B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101220440A (en) * | 2008-01-22 | 2008-07-16 | 常州艾柯轧辊有限公司 | Roller and producing technique |
| CN101966644A (en) * | 2010-09-17 | 2011-02-09 | 四川天元机械工程股份有限公司 | Method for manufacturing suspension bridge tie rod |
| KR101315361B1 (en) * | 2012-05-12 | 2013-10-07 | (주)엠프로텍 | Shaft manufacturing method |
| CN102785061A (en) * | 2012-08-01 | 2012-11-21 | 宁夏共享集团有限责任公司 | Method for processing high-precision axle products |
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| CN103418999A (en) * | 2013-09-05 | 2013-12-04 | 湖北神力汽车半轴有限公司 | Automobile axle shaft machining technique |
| CN103737270A (en) * | 2013-12-04 | 2014-04-23 | 鞠小平 | Method for machining input shaft of main reducing gear of heavy load automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014312A (en) * | 2015-06-04 | 2015-11-04 | 昆明新道为机械制造有限公司 | Processing method for fork-shaped pull rods |
| CN106286621A (en) * | 2016-10-28 | 2017-01-04 | 重庆江增船舶重工有限公司 | A kind of main shaft, half a coupler attachment structure and installation and removal method thereof |
| CN110605544A (en) * | 2019-09-23 | 2019-12-24 | 重庆江增船舶重工有限公司 | Method for machining nozzle ring blade |
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| CN104259754B (en) | 2017-02-15 |
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