CN113910096B - Abrasive particle flow finishing device and method for annular part runner - Google Patents
Abrasive particle flow finishing device and method for annular part runner Download PDFInfo
- Publication number
- CN113910096B CN113910096B CN202111245472.XA CN202111245472A CN113910096B CN 113910096 B CN113910096 B CN 113910096B CN 202111245472 A CN202111245472 A CN 202111245472A CN 113910096 B CN113910096 B CN 113910096B
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- Prior art keywords
- annular part
- abrasive
- annular
- piston
- machine tool
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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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
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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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
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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
- B24B47/00—Drives or gearings; Equipment therefor
Abstract
The invention discloses an abrasive flow finishing processing device of an annular part runner and a use method thereof, wherein the tool comprises a base and an inner ring seat, after the annular part is placed on the inner ring seat, after the annular part is fixed by combining structures such as a supporting ring, a compression ring and the like, the annular part is processed by combining with the existing bidirectional abrasive flow processing machine tool, and an abrasive experience judging formula of the annular part is disclosed according to a bidirectional abrasive processing mode, after the material of abrasive is selected, annular parts of the same type and different sizes are processed according to the empirical formula of the annular part, and the word circulation volume and the circulation times of a processing machine tool are adjusted, so that the part can be processed rapidly, and the invention has the advantages that: according to the specific size of the part and theoretical calculation, the processing parameters are determined through a process test, the processing range is rapidly determined, and meanwhile, the difficult problems of high surface roughness value of the diffuser flow channel and difficulty in manual polishing are solved.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a surface finish machining method of an annular part.
Background
The diffuser of the aeroengine is an annular part, is generally of an integrally cast structure, and consists of an inner ring, an outer ring and about 20 hollow support plates connected with the inner ring and the outer ring. The flow channel structure formed by the inner ring, the outer ring and the support plate can reduce the speed of the air flow at the outlet of the air compressor, reduce the pressure loss and stabilize and homogenize the flowing air flow. The surface roughness of the diffuser flow path has some effect on this objective.
Since the part is a cast part and the runner is curved, the surface roughness after casting is generally at least Ra3.2 and has attachments. Because of the curved surface structure of the runner and the support plate transfer fillet at more than 80 parts, the space is narrow, the roughness is reduced by traditional manual polishing, the workload is large, the period is long, the polishing quality is unstable, the surface morphology is disordered, and the transfer fillet is easy to generate polishing pits
Disclosure of Invention
In order to solve the problems, the invention discloses a grinding particle flow finishing device and a grinding particle flow finishing method for a runner of an annular part.
The specific technical scheme is as follows:
the abrasive grain flow finishing device of the annular part runner is provided with a base, the lower end of the base is provided with a base support plate, the base support plate is in threaded connection with an inner ring seat in the base, and an abrasive material channel is formed between the inner ring seat and the inner wall of the base; a central gland is arranged above the inner ring seat, the middle part of the inner ring seat is hollow, nylon filler is arranged between the central gland and the inner ring seat, the upper end of the base is connected with a supporting ring, the inner end surface of the supporting ring is abutted with the outer wall of the annular part, the central gland is abutted with the inner wall of the inner ring seat and the annular part, a compression ring is further arranged above the outer wall of the annular part, and the compression ring limits the displacement of the annular part through threaded connection with the inner wall of the supporting ring; the upper end and the lower end of the annular part are provided with a bidirectional reciprocating piston abrasive particle flow machine tool, and the abrasive channel forms an inner cavity for the bidirectional reciprocating piston abrasive particle flow machine tool to work in a reciprocating mode.
The bidirectional reciprocating piston abrasive particle flow machine tool comprises pistons, a piston cylinder and an inner cavity formed between the upper piston and the lower piston, wherein the pistons are vertically symmetrical, and abrasive materials are arranged in the inner cavity.
The upper end of the annular part is arranged along a round corner of the support plate in a circle.
The distance between the base support plate and the bottommost end of the annular part is more than 150mm.
Further, the invention discloses an abrasive particle flow finishing device for the annular part runner
The using method of (2) comprises the following steps:
1) The annular part is placed in the middle of the inner ring seat and the supporting ring, and is fixed through the central gland and the compression ring;
2) Placing a bidirectional reciprocating piston abrasive particle flow machine tool at the upper part and the lower part of the annular part, wherein the support ring is abutted with a piston cylinder at the upper end of the bidirectional reciprocating piston abrasive particle flow machine tool, an inner cavity formed between the upper piston and the lower piston comprises an abrasive material channel, and the abrasive material in the inner cavity moves up and down along with the piston to process the surface in the annular part;
3) Selecting corresponding abrasive materials according to the characteristics of the annular parts and according to the formula Obtaining the total cutting length of primary annular part processing, wherein L is the total cutting length, V is the single cycle volume,
n is the number of cycles, A is the total flow passage sectional area, A is the fixed value of the annular part, and the value of V, N is continuously adjusted until the internal surface roughness of the annular part reaches the standard value;
1) And (3) applying the empirical values of the grinding materials and L obtained in the step (3) to annular parts of other types, and reversely deducing the values of V, N according to the total flow passage sectional areas of the corresponding annular parts.
The invention has the advantages that: the bidirectional reciprocating extrusion abrasive particle flow machine tool is selected to simultaneously realize the processing of all surfaces of the part flow channel. The abrasive particle flow machining empirical formula for the annular part is provided, so that the machining time of the annular part can be effectively shortened, and the machining standard can be reached more quickly.
Drawings
FIG. 1 is a schematic view of a device for finishing abrasive flow in a flow channel of an annular part;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic diagram of an assembly of a bi-directional reciprocating extrusion abrasive flow machine tool with an annular part.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, as shown in the drawings, an abrasive grain flow finishing device of an annular part runner is provided with a base 1, the lower end of the base is provided with a base support plate 2, the base support plate is in threaded connection with an inner ring seat 3 in the base, and an abrasive material channel 4 is formed between the inner ring seat 3 and the inner wall of the base 1; a central gland 5 is arranged above the inner ring seat, the middle part of the inner ring seat 3 is hollow, a nylon filler 6 is arranged between the central gland and the inner ring seat, the upper end of the base is connected with a supporting ring 7, the inner end surface of the supporting ring is abutted with the outer wall of an annular part 8, the central gland is abutted with the inner ring seat and the inner wall of the annular part, a compression ring 9 is also arranged above the outer wall of the annular part, and the compression ring limits the displacement of the annular part through threaded connection with the inner wall of the supporting ring; the upper end and the lower end of the annular part are provided with a bidirectional reciprocating piston abrasive particle flow machine tool 9, and the abrasive channel forms an inner cavity 10 for the bidirectional reciprocating piston abrasive particle flow machine tool to work in a reciprocating mode.
The bidirectional reciprocating piston abrasive particle flow machine tool comprises pistons 11 and a piston cylinder 12 which are vertically symmetrical, an inner cavity is formed between the upper piston and the lower piston, and an abrasive 13 is arranged in the inner cavity.
The upper end of the annular part is arranged along a circle of the support plate through-connection fillet 14.
The distance between the base support plate and the bottommost end of the annular part is more than 150mm, namely H is more than or equal to 150mm.
Furthermore, the invention discloses a use method of the abrasive particle flow finishing device of the annular part runner, which comprises the following steps:
1) The annular part 8 is placed in the middle of the inner ring seat and the supporting ring, and is fixed through the central gland and the compression ring;
2) The two-way reciprocating piston abrasive particle flow machine tool is placed at the upper part and the lower part of the annular part, the supporting ring 7 is abutted with the piston cylinder 12 at the upper end of the two-way reciprocating piston abrasive particle flow machine tool, the inner cavity 10 formed between the upper piston and the lower piston comprises an abrasive material channel 4, and the abrasive material in the inner cavity moves up and down along with the piston to process the surface in the annular part;
3) Selecting corresponding abrasive materials according to the characteristics of the annular parts and according to the formula Obtaining the total cutting length of primary annular part processing, wherein L is the total cutting length, V is the single cycle volume,
n is the number of cycles, A is the total flow passage sectional area, A is the fixed value of the annular part, and the value of V, N is continuously adjusted until the internal surface roughness of the annular part reaches the standard value;
according to the empirical values of the grinding materials and L obtained in the step 3), the grinding materials and L are applied to annular parts of other types, and the numerical value of V, N is obtained by back-pushing according to the total flow passage sectional area of the corresponding annular part;
the total flow passage sectional area can be obtained through the area difference between the outer circle and the inner circle of the annular part, so that the numerical value V, N can be obtained only by knowing the sizes of the outer circle and the inner circle of the annular part under the condition of knowing the total cutting length, the numerical range of processing the annular part can be obtained quickly, and the surface of the part is roughened to reach the standard value in a shorter time;
the processing mode of the bidirectional reciprocating type extrusion abrasive particle flow machine tool is as follows: the machine tool consists of an upper piston cylinder and a lower piston cylinder, wherein the upper piston cylinder can be wholly lifted and lowered, a part is fixed in the tool, the tool 15 is arranged between the upper piston cylinder and the lower piston cylinder, the upper piston cylinder is lowered and clamps the tool, the abrasive materials are stored in the lower piston cylinder, the reciprocating motion of the machine tool piston extrudes the abrasive materials to bidirectionally flow through the surface of the part, the abrasive particle flow processing is realized, and the reciprocating motion of the machine tool can simultaneously realize the processing of all surfaces of a part runner.
When a new part is processed for the first time, the total flow passage sectional area of the part is required to be calculated, the single circulation volume V and a small number of circulation times n are set, the processing effect is observed after processing, the circulation times are gradually increased according to the processing condition until the required processing effect is achieved, then the actual total cutting length is calculated,
for example, the total cut length of the diffuser element is about 200m.
Under the condition of using the same abrasive, the cutting length can be used as a reference for processing other new annular parts, the cutting length is ensured to be 200m, the product of V and n is calculated, the direct processing verification is carried out, the condition that each new part is required to be determined by a step-by-step test from small to large is avoided, the parameter test efficiency is improved,
when the sizes of other parts are smaller and the channels are narrower, the sectional area A is rapidly reduced, the product of V and n is calculated to be reduced in equal proportion, the direct setting according to the original numerical value is avoided, the risk of overgrinding is caused, and the excessive removal amount of the surface material of the part causes the size out of tolerance.
The beneficial effects of the invention are as follows: according to the specific size of the part combined with theoretical calculation, the processing parameters are determined through a process test, the defects that the traditional manual polishing of the diffuser part is large in workload, long in period and unstable in polishing quality, polishing pits are easy to generate at the corner of the transfer joint are overcome, the surface textures of the part processed by abrasive particle flow are uniform and consistent, the surface roughness value is low, and the problems that the surface roughness value of a diffuser runner is high and manual polishing is difficult are successfully solved.
Claims (4)
1. The utility model provides an abrasive particle flow finishing processingequipment of annular part runner which characterized in that: the grinding machine comprises a base, wherein a base support plate is arranged at the lower end of the base, the base support plate is in threaded connection with an inner ring seat in the base, and an abrasive material channel is formed between the inner ring seat and the inner wall of the base; a central gland is arranged above the inner ring seat, the middle part of the inner ring seat is hollow, nylon filler is arranged between the central gland and the inner ring seat, the upper end of the base is connected with a supporting ring, the inner end surface of the supporting ring is abutted with the outer wall of the annular part, the central gland is abutted with the inner wall of the inner ring seat and the annular part, a compression ring is further arranged above the outer wall of the annular part, and the compression ring limits the displacement of the annular part through threaded connection with the inner wall of the supporting ring; the upper end and the lower end of the annular part are provided with a bidirectional reciprocating piston abrasive particle flow machine tool, and the abrasive channel forms an inner cavity for the bidirectional reciprocating piston abrasive particle flow machine tool to work in a reciprocating manner; the method for the abrasive particle flow finishing device of the annular part runner comprises the following steps:
1) The annular part is placed in the middle of the inner ring seat and the supporting ring, and is fixed through the central gland and the compression ring;
2) Placing a bidirectional reciprocating piston abrasive particle flow machine tool at the upper part and the lower part of the annular part, wherein the support ring is abutted with a piston cylinder at the upper end of the bidirectional reciprocating piston abrasive particle flow machine tool, an inner cavity formed between the upper piston and the lower piston comprises an abrasive material channel, and the abrasive material in the inner cavity moves up and down along with the piston to process the surface in the annular part;
1) Selecting corresponding abrasive materials according to the characteristics of the annular parts and according to the formula Obtaining the total cutting length of primary annular part processing, wherein L is the total cutting length, V is the single cycle volume,
n is the number of cycles, A is the total flow passage sectional area, A is the fixed value of the annular part, and the value of V, N is continuously adjusted until the internal surface roughness of the annular part reaches the standard value;
4) And (3) applying the empirical values of the grinding materials and L obtained in the step (3) to annular parts of other types, and reversely deducing the values of V, N according to the total flow passage sectional areas of the corresponding annular parts.
2. The abrasive flow finishing device for a flow passage of an annular part according to claim 1, wherein: the bidirectional reciprocating piston abrasive particle flow machine tool comprises pistons, a piston cylinder and an inner cavity formed between the upper piston and the lower piston, wherein the pistons are vertically symmetrical, and abrasive materials are arranged in the inner cavity.
3. The abrasive flow finishing device for a flow passage of an annular part according to claim 1, wherein: the upper end of the annular part is arranged along a round corner of the support plate in a circle.
4. The abrasive flow finishing device for a flow passage of an annular part according to claim 1, wherein: the distance between the base support plate and the bottommost end of the annular part is more than 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245472.XA CN113910096B (en) | 2021-10-26 | 2021-10-26 | Abrasive particle flow finishing device and method for annular part runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245472.XA CN113910096B (en) | 2021-10-26 | 2021-10-26 | Abrasive particle flow finishing device and method for annular part runner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113910096A CN113910096A (en) | 2022-01-11 |
| CN113910096B true CN113910096B (en) | 2023-10-03 |
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| CN202111245472.XA Active CN113910096B (en) | 2021-10-26 | 2021-10-26 | Abrasive particle flow finishing device and method for annular part runner |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202780853U (en) * | 2012-08-26 | 2013-03-13 | 中国南方航空工业(集团)有限公司 | Abrasive flow clamp |
| CN103029044A (en) * | 2012-12-12 | 2013-04-10 | 中国南方航空工业(集团)有限公司 | Clamp and application method thereof |
| CN107309651A (en) * | 2017-06-28 | 2017-11-03 | 贵州黎阳国际制造有限公司 | The clamp for machining and processing method of a kind of special-shaped groove |
| CN107790974A (en) * | 2017-11-13 | 2018-03-13 | 重庆江增船舶重工有限公司 | A kind of processing method of vapour compression machine diffuser |
| RU182524U1 (en) * | 2017-09-19 | 2018-08-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнева" (СибГУ им. М.Ф. Решетнева) | A device for polishing the inner surfaces of sectionally curved waveguides during abrasive extrusion processing |
| CN109366365A (en) * | 2018-09-28 | 2019-02-22 | 西安航天发动机有限公司 | A kind of 3D printing honeycomb screen abrasive Flow finishing processing device and application method |
| CN109676525A (en) * | 2019-01-07 | 2019-04-26 | 南京航空航天大学 | A kind of impeller complexity inner flow passage abrasive Flow skin processing special fixture |
-
2021
- 2021-10-26 CN CN202111245472.XA patent/CN113910096B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202780853U (en) * | 2012-08-26 | 2013-03-13 | 中国南方航空工业(集团)有限公司 | Abrasive flow clamp |
| CN103029044A (en) * | 2012-12-12 | 2013-04-10 | 中国南方航空工业(集团)有限公司 | Clamp and application method thereof |
| CN107309651A (en) * | 2017-06-28 | 2017-11-03 | 贵州黎阳国际制造有限公司 | The clamp for machining and processing method of a kind of special-shaped groove |
| RU182524U1 (en) * | 2017-09-19 | 2018-08-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнева" (СибГУ им. М.Ф. Решетнева) | A device for polishing the inner surfaces of sectionally curved waveguides during abrasive extrusion processing |
| CN107790974A (en) * | 2017-11-13 | 2018-03-13 | 重庆江增船舶重工有限公司 | A kind of processing method of vapour compression machine diffuser |
| CN109366365A (en) * | 2018-09-28 | 2019-02-22 | 西安航天发动机有限公司 | A kind of 3D printing honeycomb screen abrasive Flow finishing processing device and application method |
| CN109676525A (en) * | 2019-01-07 | 2019-04-26 | 南京航空航天大学 | A kind of impeller complexity inner flow passage abrasive Flow skin processing special fixture |
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| Publication number | Publication date |
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| CN113910096A (en) | 2022-01-11 |
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