CN103381489A - Formed turning tool used for screw of single-screw compressor and machining method - Google Patents
Formed turning tool used for screw of single-screw compressor and machining method Download PDFInfo
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- CN103381489A CN103381489A CN2013102691940A CN201310269194A CN103381489A CN 103381489 A CN103381489 A CN 103381489A CN 2013102691940 A CN2013102691940 A CN 2013102691940A CN 201310269194 A CN201310269194 A CN 201310269194A CN 103381489 A CN103381489 A CN 103381489A
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Abstract
The invention discloses a formed turning tool used for a screw of a single-screw compressor. The width of the formed turning tool is equal to the slot width b of the screw; a cutting edge matched with a long straight generating line is arranged in each of the two sides of the formed turning tool; the contour of the top end of each cutting edge is matched with a slot bottom arc R2. Based on the formed turning tool and the principle that the slot side profile is formed by the long straight generating line, a screw machining method is provided. The formed turning tool and the machining method have the following advantages: during machining a screw, the cutting force is small, the surface quality is high, the dividing accuracy is high and the operation is stable.
Description
Technical field
The present invention relates to a kind of single screw compressor, refer more particularly to the processing method for formed turning tool and the screw rod of single-screw compressor screw.
Background technology
Single screw compressor main frame key component includes screw rod, star-wheel and housing, and the plane star-wheel that CP type single screw compressor main frame is arranged by a cylindrical screw and two Central Symmetries forms Meshing Pair and is contained in housing and consists of.6 helicla flutes of screw rod and casing inner wall and 11 spider piece crest top lands consist of element volume, the power of High Rotation Speed passes to screw spiral trough and drives the rotation of spider piece tooth, make air enter the star-wheel gear piece sealing that is rotated after suction muffler by screw rod chamfering end face, be compressed to after design pressure to exhaust end, discharged through the exhaust passage by the estuary of opening in inner walls.Housing is provided with spray hole, enters compression chamber after nozzle atomization, to reach cooling, sealing, absorbing, noise reduction and lubricated.
The parameter of general single-screw compressor screw is designated as: screw diameter d
1, a number Z
1=6, groove width b, tooth top width b
1, groove depth h and bottom land circular arc R
2The parameter of star-wheel is designated as: the star-wheel diameter d
2, the tooth top circular arc R
2, tooth number Z
2=11, sheet thick (transverse tooth thickness) b
2, the facewidth (transverse tooth thickness) b, fully teeth height h; Meshing Pair centre-to-centre spacing A, wheel core bar span a, gearratio i=11/6.
Usually adopt by screw rod groove width b, bottom land circular arc R at present
2(namely go to intercept the bottom land circular arc R with screw rod groove width b
2The arc of gained) and each 1 the short straight edge line t of symmetry (t＞S of two ends
1) formed turning tool that forms of blade, as a tooth top cutter tooth on star-wheel, edge plane centers with it when processing by gearratio i generate apart from A lower than the about 1mm of screw axis, and the formed turning tool radial feed often turns depth of cut S
1(mm/r), circular arc R at the bottom of working groove
2Shi Zidong reduces the depth of cut to groove depth h(such as Fig. 1), stop feed, it is positive integer that the workbench finishing tool turns 6N(N) turn, the stall cutter is the fast return original position after empty cutter spacing.Screw slot side molded line is equivalent to center apart from A, forms 1 long straight edge line blade by the short straight edge line t blade of continuous feed is overlapping, and the helicoid that processes is to open up curved surface, can only mill out and can not grind.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of formed turning tool for single-screw compressor screw and processing method are provided, and the screw rod machining accuracy is high, and efficient is high, gear shaper without theoretical errors, and cutting force is little, and surface quality is high.
Technical scheme of the present invention is: a kind of formed turning tool for single-screw compressor screw, its central principle are to utilize 1 long straight edge line to do generate processing.Wide according to formed turning tool and the screw rod groove width b of this principle design, respectively there is 1 blade consistent with long straight edge line formed turning tool both sides, and its top blade edge profiles is consistent with bottom land circular arc R 2.In simple terms, the vertical projection profile line that is exactly formed turning tool is comprised of three parts, and the bottom is that screw rod groove width b(refers to that here the bottom wheel profile is consistent with screw rod groove width b), two ends (both sides) each 1 long straight edge line, the top is the bottom land circular arc R
2
Adopt 1 long straight edge line center apart from the screw rod formed turning tool of A generate process principle select that durability is high, the carbide chip of simple shape or tool section and high rigidity knife bar grind through the high-frequency welding precision and form, the shape of tool is simple, easy to process, sharp, precision is high, surface roughness and durability all good, the use of can repeatedly refacing, cost performance is high.
A kind of single-screw compressor screw processing method adopts international advanced technology to make, and indexing accuracy is higher than the high accuracy special plane (its work table rotation speed far surpasses existing special plane) of 5 grades of national standards.Coordinate above-mentioned formed turning tool, according to the principle that groove side molded line is formed by 1 long straight edge line, carry out screw rod processing.Add and between left (right side) head of a bed of lathe and right side (left side) tailstock, screw rod is installed man-hour, add the man-hour screw rod from upper (under) downwards (on) the fixing worktable rotary that rotates against (suitable) hour hands towards the position.The star-wheel be equivalent to 11 teeth is installed on workbench, is only kept the formed turning tool of 1 complete profile of tooth, edge plane is lower than the about 1mm of screw axis, and before processing, the top blade is apart from screw clearance X
1, the long straight edge line blade of both sides is perpendicular to screw axis and be symmetrical in the workbench center line, and symmetry is divided equally screw slot side surplus automatically, and this moment, the centre-to-centre spacing of screw rod star-wheel Meshing Pair was: A+h+X
1Adding cooling, lubricating fluid during work improves tool life and reduces air-borne dust, screw rod be equivalent to 1 complete shaping of teeth lathe tool of star-wheel and do generate processing time by gearratio i, lathe bed is with screw rod radial feed (or lathe bed fixedly rotary table radial feed), depth of cut S
1(mm/r) until be machined to the bottom land circular arc R
2The time, automatically reduce the depth of cut to centre-to-centre spacing A, stop feed and compress simultaneously lathe bed, workbench finishing tool 6N(N is positive integer) and turning stall, cutter is retracted into fast original position and shuts down after empty cutter spacing, change and treat that product carries out next screw rod processing.The finishing tool purpose is to guarantee final groove side molded line correctly and gear shaper without theoretical errors, improves simultaneously surface quality.
For further enhancing productivity, can with the reservation the 1st of star-wheel cutter tooth and the 4 two complete shaping of teeth lathe tool, can greatly improve the screw rod working (machining) efficiency as mentioned above.For the high-quality of guaranteeing groove side molded line and reduce cutting force, formed turning tool should resolve into two formed turning tools, respectively circular arc and local bottom land circular arc at the bottom of independent working groove.
Beneficial effect of the present invention is embodied in: high accuracy, high efficiency, gear shaper without theoretical errors, and with 1 long straight edge line generate processing screw rod side molded line, cutting force is little, surface quality is high, indexing accuracy is high, smooth running, long-lived reliable, the energy-saving low-carbon of the single screw compressor product that obtains of assembling, tranquility environmental protection.
Description of drawings
Fig. 1 is the overlapping generate processing screw slot side molded line of existing 1 short straight edge line t and bottom land circular arc R
2Schematic diagram (n
1Represent the screw rod direction of rotation, n
2Represent the worktable rotary direction, lower same);
Fig. 2 is 1 long straight edge line generate processing screw slot side molded line and bottom land circular arc R
2Schematic diagram.
The specific embodiment
As shown in Figure 2, formed turning tool is a square tool section, and width equates with screw rod groove width b, and respectively there is 1 blade consistent with long straight edge line both sides, and the top blade edge profiles is consistent with bottom land circular arc R 2.Two formed turning tools that are equivalent to star-wheel the 1st and the 4th tooth have been installed in Fig. 2, can have been improved fast working (machining) efficiency.
Adopt indexing accuracy identical and carry out screw rod processing higher than the numerical control closed loop special purpose machine tool of 5 grades of national standards, loading screw between the upper left head of a bed of lathe bed and right tailstock, adding the worktable rotary that fixedly is rotated counterclockwise towards the position from the top down man-hour (is the n in Fig. 2
1And n
2Direction), on workbench, installation is equivalent to a complete star-wheel shaping of teeth lathe tool, tooth top circular arc R
2Blade is at position to be processed and screw clearance X
1, plane on the lathe tool sword (upper surface of formed turning tool in Fig. 2) lower than the about 1mm of screw rod center line, Meshing Pair centre-to-centre spacing is: A+h+X
1Before processing, each 1 long straight edge line blade of lathe tool both sides is vertical with screw rod and be symmetrical in the turntable center line, and automatic and screw rod groove width b aligns and divides equally allowance, adds when adding cooling-lubricant man-hour and make generate and process by gearratio i=11/6, lathe bed is with screw rod radial feed, depth of cut S
1Until circular arc R at the bottom of working groove
2The time, automatically reduce the depth of cut to centre-to-centre spacing A, immediately stop feed and compress simultaneously lathe bed, workbench finishing tool 6N turns, and stall is after empty cutter spacing, and fast return to original position is shut down, and changes and treats that product carries out next screw rod again and makes.Described A, N, h, X
1Determine according to screw rod to be processed with the occurrence of b.
The above, it is only a kind of preferred embodiments of the present invention, be not that the technology of the present invention scope is imposed any restrictions, every any trickle modification, variation and modification of above enforcement being done according to the technology of the present invention essence still belongs in the scope of technical solution of the present invention.
Claims (3)
1. formed turning tool that is used for single-screw compressor screw, it is characterized in that: formed turning tool and screw rod groove width b are wide, and respectively there are 1 blade consistent with long straight edge line, its top blade edge profiles and bottom land circular arc R in formed turning tool both sides
2Unanimously.
2. a kind of formed turning tool for single-screw compressor screw according to claim 1, it is characterized in that: described formed turning tool is carbide chip or tool section.
3. the processing method of a single-screw compressor screw, it is characterized in that: screw rod is placed between the left head of a bed and right tailstock of lathe, the worktable rotary of fixing and being rotated counterclockwise towards the position from the top down, screw rod and formed turning tool are done generate processing by gearratio i, lathe bed is with screw rod radial feed, depth of cut S simultaneously
1Until be machined to the bottom land circular arc R
2The time, automatically reduce the depth of cut to centre-to-centre spacing A, stop feed and compress simultaneously lathe bed, workbench finishing tool 6N turns rear stall, and cutter is retracted into fast original position and shuts down after empty cutter spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102691940A CN103381489A (en) | 2013-06-30 | 2013-06-30 | Formed turning tool used for screw of single-screw compressor and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102691940A CN103381489A (en) | 2013-06-30 | 2013-06-30 | Formed turning tool used for screw of single-screw compressor and machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103381489A true CN103381489A (en) | 2013-11-06 |
Family
ID=49489540
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102691940A Pending CN103381489A (en) | 2013-06-30 | 2013-06-30 | Formed turning tool used for screw of single-screw compressor and machining method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB226546A (en) * | 1923-12-17 | 1925-05-28 | Hermann Steinpueck | Improvements in and relating to screw thread cutting tools |
| US1923423A (en) * | 1930-04-09 | 1933-08-22 | Asa S Cook Company | Machine for cutting screw threads |
| US3852859A (en) * | 1972-03-22 | 1974-12-10 | Allied Tool Prod Inc | Cutting tool |
| CN1664371A (en) * | 2005-03-17 | 2005-09-07 | 西安交通大学 | Method for designing a profile enveloped by multi straight lines of engagement pair for single screw compressor |
| US20090217528A1 (en) * | 2008-02-29 | 2009-09-03 | Mitsubishi Electric Corporation | Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor |
| CN101961803A (en) * | 2010-06-04 | 2011-02-02 | 深圳市亚普精密机械有限公司 | Single-screw compressor screw, method for forming one long-straight bus 1 by star wheel meshed auxiliary gear side moulded line and tool |
| CN201833084U (en) * | 2010-06-04 | 2011-05-18 | 深圳振华亚普精密机械有限公司 | Device for manufacturing screw and star-wheel engaging pairs tooth side molded line of single-screw compressor |
-
2013
- 2013-06-30 CN CN2013102691940A patent/CN103381489A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB226546A (en) * | 1923-12-17 | 1925-05-28 | Hermann Steinpueck | Improvements in and relating to screw thread cutting tools |
| US1923423A (en) * | 1930-04-09 | 1933-08-22 | Asa S Cook Company | Machine for cutting screw threads |
| US3852859A (en) * | 1972-03-22 | 1974-12-10 | Allied Tool Prod Inc | Cutting tool |
| CN1664371A (en) * | 2005-03-17 | 2005-09-07 | 西安交通大学 | Method for designing a profile enveloped by multi straight lines of engagement pair for single screw compressor |
| US20090217528A1 (en) * | 2008-02-29 | 2009-09-03 | Mitsubishi Electric Corporation | Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor |
| CN101961803A (en) * | 2010-06-04 | 2011-02-02 | 深圳市亚普精密机械有限公司 | Single-screw compressor screw, method for forming one long-straight bus 1 by star wheel meshed auxiliary gear side moulded line and tool |
| CN201833084U (en) * | 2010-06-04 | 2011-05-18 | 深圳振华亚普精密机械有限公司 | Device for manufacturing screw and star-wheel engaging pairs tooth side molded line of single-screw compressor |
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| PB01 | Publication | ||
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Application publication date: 20131106 |