CN112643103B - Machining method and matching machining method for triangular pyramid profile of turbocharger - Google Patents
Machining method and matching machining method for triangular pyramid profile of turbocharger Download PDFInfo
- Publication number
- CN112643103B CN112643103B CN202011515202.1A CN202011515202A CN112643103B CN 112643103 B CN112643103 B CN 112643103B CN 202011515202 A CN202011515202 A CN 202011515202A CN 112643103 B CN112643103 B CN 112643103B
- Authority
- CN
- China
- Prior art keywords
- triangular pyramid
- impeller
- gauge
- main shaft
- measuring
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a machining method and a matching machining method for a triangular pyramid profile of a turbocharger, which can improve the machining precision of the triangular pyramid profile. Processing the triangular pyramid profile on a numerical control milling machine in a three-axis linkage spiral milling mode; the feed mode is as follows: the circular arc feed is changed into the straight line segment feed by a circle cutting method, and the machining precision is adjusted by adjusting the length of the straight line segment. The feed programming method of the numerical control milling machine comprises the following steps: establishing a three-dimensional model of the triangular pyramid surface by using three-dimensional software; according to the spiral milling path, drawing a spiral curve on the three-dimensional model of the triangular pyramid surface, extracting data point coordinates on the spiral curve according to the set density, forming a straight-line section feed path by adjacent data point coordinates, and then performing subsequent programming treatment.
Description
Technical Field
The invention relates to the technical field of turbochargers, in particular to a machining method and a matching machining method for triangular pyramid profiles of a turbocharger.
Background
The rotor structure of the turbocharger mainly comprises a turbine, a turbine shaft and an air compression impeller, wherein the turbine is rigidly connected with the turbine shaft, and the air compression impeller is connected with the turbine shaft in a matched mode. When the gas compressor works, waste gas generated by combustion of the internal combustion engine pushes the turbine to rotate, and the turbine shaft drives the gas compression impeller to rotate. The air compressing impeller compresses air, the air input of the internal combustion engine is increased, and the working efficiency of the internal combustion engine is improved.
The connection mode of the triangular conical hole and the shaft is used as a novel connection mode of the turbine shaft and the air compressing impeller, the transmission efficiency is high, the energy loss is small, unnecessary parts are not needed, and the novel connection mode is a novel technical direction of hole and shaft connection. When the triangular pyramid special-shaped hole is connected with the shaft, the requirement on the surface profile degree of the triangular pyramid surface is high in order to achieve the best matching effect.
When the triangular pyramid profile structure is processed, a straight shank ball end milling cutter is selected, and the processing method adopts the step-down circular arc contour processing. During milling, the triangular pyramid surface is layered according to the axial stepping distance, each layer is a plurality of sections of arc tool paths, the arc tool path of the tool mills one layer, the tool moves one layer axially, and then the arc tool path mills one layer.
The method has the following defects:
1. due to the fact that the milling is conducted in a layered mode, each layer has independent axial movement, and the triangular conical surface generates tool marks when the tool moves axially, and the profile degree of the surface is affected.
2. Each layer is processed by a circular arc, and the profile of a processed surface is influenced by the capability of a machine tool for interpolating a circular arc feed. The roundness of the actual circle milled by a machine tool for machining the part by the company at the present stage is only 0.02mm, and the profile of the triangular pyramid surface is required to be 0.01mm.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a machining method and a matching machining method for a triangular pyramid profile of a turbocharger, and can improve the machining precision of the triangular pyramid profile.
The purpose of the invention is realized by the following steps:
a triangular pyramid profile processing method of a turbocharger rotor is characterized in that a triangular pyramid profile is processed on a numerical control milling machine in a three-axis linkage spiral milling mode;
the feed mode is as follows:
the circular arc feed is changed into the straight line segment feed by a circle cutting method, and the machining precision is adjusted by adjusting the length of the straight line segment.
Preferably, the feed programming method of the numerical control milling machine comprises the following steps:
establishing a three-dimensional model of the triangular pyramid surface by using three-dimensional software;
according to the spiral milling path, drawing a spiral curve on the three-dimensional model of the triangular pyramid surface, extracting data point coordinates on the spiral curve according to the set density, forming a straight-line section feed path by adjacent data point coordinates, and then performing subsequent programming treatment.
A method for matching and processing an impeller and a main shaft of a turbocharger rotor,
s1, calculating a distance D between an impeller measuring surface and a main shaft measuring surface according to a design matching relation of a supercharger impeller and a main shaft;
s2, designing and manufacturing a sleeve gauge for measuring the triangular conical shaft and a plug gauge for measuring the triangular conical hole according to the design sizes of the impeller and the main shaft, combining the sleeve gauge and the plug gauge, and measuring and recording the height difference B between the measuring surface of the sleeve gauge and the measuring surface of the plug gauge;
s3, processing a triangular pyramid shaft structure on the main shaft;
s4, measuring and recording the distance C from the measuring surface of the main shaft to the measuring surface of the sleeve gauge by using the sleeve gauge on the triangular pyramid shaft structure of the main shaft;
s5, calculating a theoretical distance A from the plug gauge measuring surface to the impeller measuring surface, wherein the calculation formula of A is as follows:
A＝B+D-C；
s6, reserving allowance for machining the triangular taper hole structure on the impeller, detecting by using a plug gauge after machining each time, measuring the distance from the measuring surface of the plug gauge to the measuring surface of the impeller, performing tool compensation according to the difference value of the measuring distance and the theoretical distance A, and continuing machining until the measuring distance is equal to the theoretical distance A.
Preferably, in the step S3, after the trial cut piece is verified, the triangular pyramid shaft structure on the main shaft is ground or milled by a four-shaft device; and in the step S6, machining the triangular conical hole structure on the impeller through a triaxial machining center.
Preferably, in step S2, the combination of the set gauge and the plug gauge is as follows: the small-diameter end of the plug gauge is inserted into the large-hole end of the sleeve gauge until the maximum value is reached, and the interference is avoided.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the processing precision of the triangular pyramid profile is improved;
the problem of three-edged taper hole, axle transmission pair in the course of working can't the on-line measuring result lead to the part assembly relation incorrect is solved.
Drawings
FIG. 1 is a schematic view of a triangular pyramid shaft structure;
FIG. 2 is a schematic view of a triangular pyramid hole structure;
FIG. 3 is a schematic diagram of a tool path in a machining mode;
FIG. 4 is a schematic view of a tool path for a machining mode of the present invention;
FIG. 5 is a schematic structural diagram of an impeller and a triangular pyramid hole;
FIG. 6 is a schematic structural diagram of a main shaft and a triangular pyramid shaft;
FIG. 7 is a schematic view of an impeller and spindle assembly;
FIG. 8 is a schematic diagram of a plug gauge structure;
FIG. 9 is a schematic view of a construction of a gauge;
FIG. 10 is a schematic view of a combination structure of a set gauge and a plug gauge;
fig. 11 is a theoretical distance calculation schematic diagram from a plug gauge measuring surface to an impeller measuring surface.
Detailed Description
Referring to fig. 4, the invention relates to a method for processing a triangular pyramid profile of a turbocharger rotor, which changes axial oblique line feed and circumferential arc milling in the original mode into a three-axis linkage spiral milling mode through a spiral point position type processing mode. The cutter marks generated when the cutter moves axially on the surfaces of the triangular conical hole and the shaft are avoided. The precision of the numerical control milling machine in the process of moving the straight line section is higher than that of the interpolation circular arc, the circular arc feed is changed into the straight line section feed through a circle cutting method, and the machining precision is adjusted through adjusting the length of the straight line section.
The method comprises the steps of establishing a three-dimensional model of a triangular pyramid surface by using three-dimensional software, drawing a spiral curve on the triangular pyramid surface as required, extracting data point coordinates on the spiral line according to a certain density, carrying out subsequent programming treatment according to an actual processing machine tool, changing arc feed into straight-line section feed through a circle cutting method in a three-axis linkage spiral milling mode, and adjusting the processing precision through adjusting the length of the straight-line section.
The impeller and the triangular conical hole structure are shown in figure 5, the main shaft and the triangular conical shaft structure are shown in figure 6, the assembly relation during component assembly is shown in figure 7, the holes and the shafts are in interference fit during assembly, the interference magnitude of the impeller positioning end face, the shaft positioning end face and the oil thrower disc reaches design when the impeller positioning end face, the shaft positioning end face and the oil thrower disc are attached (the holes and the shafts are matched), the taper in the structure ensures automatic centering, the conical surface attachment ensures the stability during transmission, and the triangle ensures the reliable transmission of torque force. The invention needs to ensure that the parts have correct interference when the end faces are jointed, and needs to ensure that the matching relation of the two parts is correct, namely the size relation, the position relation and the contour jointing of the matched triangular conical holes and shafts are correct. The method comprises the following steps:
s1, calculating a distance D between an impeller measuring surface and a main shaft measuring surface according to a design matching relation of a supercharger impeller and a main shaft;
s2, referring to the figures 8 and 9, designing and manufacturing a sleeve gauge for measuring the triangular conical shaft and a plug gauge for measuring the triangular conical hole according to the design sizes of the impeller and the main shaft, referring to figure 10, and measuring and recording the height difference B between the measuring surface of the sleeve gauge and the measuring surface of the plug gauge after combining the sleeve gauge and the plug gauge; the combination mode of the sleeve gauge and the plug gauge is as follows: the small diameter end of the plug gauge is inserted into the large hole end of the sleeve gauge until the maximum value is reached, and the interference is avoided.
S3, after the trial-cut piece is verified, grinding or milling the triangular pyramid shaft structure on the main shaft through four-shaft equipment;
s4, measuring and recording the distance C from the measuring surface of the main shaft to the measuring surface of the sleeve gauge by using the sleeve gauge on the triangular pyramid shaft structure of the main shaft;
s5, calculating the theoretical distance A from the measuring surface of the plug gauge to the measuring surface of the impeller, referring to FIG. 11, wherein the calculation formula of A is as follows:
A＝B+D-C；
and S6, machining the triangular taper hole structure on the impeller by a triaxial machining center with allowance, detecting by using a plug gauge after each machining, measuring the distance from the measuring surface of the plug gauge to the measuring surface of the impeller, performing tool compensation according to the difference between the measured distance and the theoretical distance A, and continuing machining until the measured distance is equal to the theoretical distance A.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. A processing method of a triangular pyramid profile of a turbocharger rotor is characterized in that the triangular pyramid profile is processed in a three-axis linkage spiral milling mode on a numerical control milling machine;
the feed mode is as follows:
changing circular arc feed into straight line section feed by a circle cutting method, and adjusting the machining precision by adjusting the length of the straight line section;
the feed programming method of the numerical control milling machine comprises the following steps:
establishing a three-dimensional model of the triangular pyramid surface by using three-dimensional software;
according to the spiral milling path, drawing a spiral curve on the three-dimensional model of the triangular pyramid surface, extracting data point coordinates on the spiral curve according to a set density, forming a straight-line section feed path by adjacent data point coordinates, and then performing subsequent programming treatment.
2. A method for matching and processing an impeller and a main shaft of a turbocharger rotor is characterized in that,
s1, calculating a distance D between an impeller measuring surface and a main shaft measuring surface according to a design matching relation of a supercharger impeller and a main shaft;
s2, designing and manufacturing a sleeve gauge for measuring the triangular conical shaft and a plug gauge for measuring the triangular conical hole according to the design sizes of the impeller and the main shaft, combining the sleeve gauge and the plug gauge, and measuring and recording the height difference B between the measuring surface of the sleeve gauge and the measuring surface of the plug gauge;
s3, processing the triangular pyramid shaft structure on the main shaft by the method of claim 1;
s4, measuring and recording the distance C from the measuring surface of the main shaft to the measuring surface of the sleeve gauge by using the sleeve gauge on the triangular pyramid shaft structure of the main shaft;
s5, calculating a theoretical distance A from the plug gauge measuring surface to the impeller measuring surface, wherein the calculation formula of A is as follows:
A＝B+D-C；
s6, by the method of claim 1, a triangular-tapered hole structure on the impeller is machined with allowance, a plug gauge is used for detection after each machining, the distance from the measuring surface of the plug gauge to the measuring surface of the impeller is measured, and then the cutter compensation is carried out according to the difference between the measured distance and the theoretical distance A and the machining is continued until the measured distance is equal to the theoretical distance A.
3. The method for matching and machining the impeller and the main shaft of the turbocharger rotor according to claim 2, wherein: in the step S3, after the trial cut piece is verified, grinding or milling the triangular pyramid shaft structure on the main shaft by four-shaft equipment; and in the step S6, a triangular conical hole structure on the impeller is processed through a triaxial processing center.
4. The method for matching and machining the impeller and the main shaft of the turbocharger rotor according to claim 2, wherein: in the step S2, the combination mode of the set gauge and the plug gauge is as follows: the small-diameter end of the plug gauge is inserted into the large-hole end of the sleeve gauge until the maximum value is reached, and the interference is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515202.1A CN112643103B (en) | 2020-12-21 | 2020-12-21 | Machining method and matching machining method for triangular pyramid profile of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515202.1A CN112643103B (en) | 2020-12-21 | 2020-12-21 | Machining method and matching machining method for triangular pyramid profile of turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112643103A CN112643103A (en) | 2021-04-13 |
| CN112643103B true CN112643103B (en) | 2023-03-10 |
Family
ID=75358445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011515202.1A Active CN112643103B (en) | 2020-12-21 | 2020-12-21 | Machining method and matching machining method for triangular pyramid profile of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112643103B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149612A (en) * | 2006-09-19 | 2008-03-26 | 苏毅强 | Graph type visual digital control programming method |
| CN101204752A (en) * | 2007-12-17 | 2008-06-25 | 南阳二机石油装备(集团)有限公司 | Method for milling thread on non-revolved body |
| CN103335579A (en) * | 2013-07-08 | 2013-10-02 | 河北华北柴油机有限责任公司 | Taper position gauge for accurately measuring big end diameter error of taper hole |
| CN105215446A (en) * | 2015-09-08 | 2016-01-06 | 创生医疗器械（中国）有限公司 | The processing method of milling cutter, formed threading tool, lock hole and lock hole |
| CN106001792A (en) * | 2016-05-23 | 2016-10-12 | 佛山新成洪鼎机械技术有限公司 | Portable three-axle linkage numerical control thread milling machine |
| CN109530768A (en) * | 2018-11-06 | 2019-03-29 | 中国航发贵州黎阳航空动力有限公司 | A kind of processing method of blade tip chamfered edge thinning area |
| CN110737240A (en) * | 2019-09-26 | 2020-01-31 | 天津市天森智能设备有限公司 | double-tool grinding device for machining revolving body and tool path generating method |
| CN111571316A (en) * | 2020-04-30 | 2020-08-25 | 科德数控股份有限公司 | Grinding track optimization method and system for screw tap thread machining |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7220083B2 (en) * | 2003-10-15 | 2007-05-22 | Tdy Industries, Inc. | Cutting insert for high feed face milling |
| CN101168203A (en) * | 2007-11-23 | 2008-04-30 | 重庆绿波工贸有限公司 | Vertical screw umbrella gear wheel milling and grinding machine tool |
| SE533852C2 (en) * | 2009-06-23 | 2011-02-08 | Sandvik Intellectual Property | Rotatable tool for chip separating machining and release stop for this |
| JP6556229B2 (en) * | 2015-05-28 | 2019-08-07 | 京セラ株式会社 | Drill and cutting method |
-
2020
- 2020-12-21 CN CN202011515202.1A patent/CN112643103B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149612A (en) * | 2006-09-19 | 2008-03-26 | 苏毅强 | Graph type visual digital control programming method |
| CN101204752A (en) * | 2007-12-17 | 2008-06-25 | 南阳二机石油装备(集团)有限公司 | Method for milling thread on non-revolved body |
| CN103335579A (en) * | 2013-07-08 | 2013-10-02 | 河北华北柴油机有限责任公司 | Taper position gauge for accurately measuring big end diameter error of taper hole |
| CN105215446A (en) * | 2015-09-08 | 2016-01-06 | 创生医疗器械（中国）有限公司 | The processing method of milling cutter, formed threading tool, lock hole and lock hole |
| CN106001792A (en) * | 2016-05-23 | 2016-10-12 | 佛山新成洪鼎机械技术有限公司 | Portable three-axle linkage numerical control thread milling machine |
| CN109530768A (en) * | 2018-11-06 | 2019-03-29 | 中国航发贵州黎阳航空动力有限公司 | A kind of processing method of blade tip chamfered edge thinning area |
| CN110737240A (en) * | 2019-09-26 | 2020-01-31 | 天津市天森智能设备有限公司 | double-tool grinding device for machining revolving body and tool path generating method |
| CN111571316A (en) * | 2020-04-30 | 2020-08-25 | 科德数控股份有限公司 | Grinding track optimization method and system for screw tap thread machining |
Non-Patent Citations (1)
| Title |
|---|
| 现代精密复杂模具高速加工智造技术;郑万全;《金属加工(冷加工)》;20160501(第09期);12-15 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112643103A (en) | 2021-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678881B (en) | Rigid gear and flexible gear which are used for short-tube flexible-gear harmonic speed reducer and machining process thereof | |
| JP2017106470A (en) | Improved process of manufacture of rotor of centrifugal compressor | |
| CN102357782B (en) | Machining method for cutting circumference sleeve part | |
| CN103737267B (en) | A kind of processing method of end face tooth super-long joint shaft | |
| CN103752918B (en) | A kind of compressor blade and blade air flue molded line zero-bit cuts finish-milling technique | |
| CN103753322A (en) | Device and process for machining differential housing | |
| CN103862346B (en) | Instant center-free envelope grinding method for spiral curved surface of micro milling cutter | |
| CN110102989B (en) | Processing method of compressed air impeller of VTR series supercharger | |
| CN103418851A (en) | Method for producing conical or hypoid wheels using the plunging process | |
| CN107052419A (en) | A kind of Milling Motion in Three-axes NC milling method and device of variable cross-section twisted blade half-opened impeller | |
| CN112643103B (en) | Machining method and matching machining method for triangular pyramid profile of turbocharger | |
| CN109128723B (en) | Method for machining V-shaped through lightening hole of crankshaft connecting rod neck | |
| CN110405289A (en) | A kind of separately-loaded involute spiral internal gear broach and its grinding method | |
| Cheng et al. | Study on micro helical milling of small holes with flat end mills | |
| CN114012369A (en) | Method for machining high-rotation-speed impeller with end face teeth | |
| CN203726231U (en) | Machining device of differential mechanism shell | |
| CN110253066B (en) | Top cutter identification and elimination method for five-axis plunge milling of integral impeller | |
| RU2482940C1 (en) | Method of machining gas turbine engine blisk | |
| CN115213643B (en) | Method for machining ultra-long hollow reducing high-precision rotor shaft of aero-engine | |
| CN115283729A (en) | Micro drilling tool with H-shaped chisel edge structure and preparation method thereof | |
| CN112518261B (en) | Matching processing method of triangular pyramid special-shaped shaft hole transmission pair | |
| CN111618538B (en) | Method for machining guide vane outer ring guide vane hole of through-flow turbine | |
| CN110509002B (en) | Machining process of upper pipe joint of circular bent pipe | |
| CN108406243B (en) | Efficient cutting and finish milling process for total length of titanium alloy blade | |
| CN209157155U (en) | A kind of chamfering tool structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |