CN102615319A - Method for processing cam with three-coordinate numerical control center - Google Patents
Method for processing cam with three-coordinate numerical control center Download PDFInfo
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- CN102615319A CN102615319A CN2011100276728A CN201110027672A CN102615319A CN 102615319 A CN102615319 A CN 102615319A CN 2011100276728 A CN2011100276728 A CN 2011100276728A CN 201110027672 A CN201110027672 A CN 201110027672A CN 102615319 A CN102615319 A CN 102615319A
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Abstract
A method for processing a cam with a three-coordinate numerical control center solves shortages of long preparation time before processing, unstable shape dimension of artificially filed and finished cams, low roughness and precision of curved surfaces, difficult guarantee of the quality, and long manufacturing period and low efficiency of the cams of the prior art. The method is characterized in that the method comprises the following steps: utilizing a UGNX postprocessor to set and define a postprocessor file suitable for an FANUC system according to product characteristics and processing characteristics; optimizing numerical control processing technology programming; and calculating through combining the cutter offset amount with the fine finishing coordinate offset amount to realize the processing of the cam by the numerical control processing centers. The method has the advantages of stable product shape dimension, high roughness and precision of the curved surfaces, good product quality, short manufacturing period and high efficiency. If an above five-axis numerical control center is used to radially process the cam, only a common standard milling cutter with the diameter phi/2 of less than or equal to the radius R at the recess inflection point of the cam is needed. The method is provided for processing the cam through the three-coordinate numerical control center.
Description
Technical field
The present invention is a kind of cam, is the processing method of shaped form face, particularly the method for three-dimensional numer centre machining cam.
Background technology
Machining cam in the prior art generally is on milling machine, to use the dedicated cam profiling attachment to carry out roughing; Utilizing the special-purpose file of cam to repair model (measurer) by pincers worker again accomplishes the file of cam curve profile and repaiies (cam mould anchor clamps and the special-purpose file of cam are repaiied model need otherwise designed, manufacturing).Though this method also can process cam; But its weak point is: the processing early-stage preparations time is long, repaiies accurately machined cam type surface size instability through artificial file, and shaped form surface roughness, precision are low; Product quality is difficult to guarantee, and the cam manufacturing cycle is long and efficient is low.
Summary of the invention
In order to solve the weak point in the above-mentioned background technology, the purpose of this invention is to provide a kind of method of numer centre machining cam.Technical solution of the present invention is: according to product performance and processing characteristic; Utilization UGNX post processor (POSTBUILD); The post processor file that definition is fit to the FANUC system is set; Optimize the CNC processing technology programming, calculate, to realize the processing of numerical control machining center cam in conjunction with tool offset amount and fine finishining coordinate side-play amount.Its concrete grammar is:
1, creates definition and the FANUC system is set with the rearmounted file of handling
Processing characteristics according to three FANUC system numerical control machining center equipment; To UGNX software numerical control device systems soft ware post processor instrument, set up one of customization and be suitable for the new post processor file particular tool (multiaxis program post processor) of FANUC control system that three-dimensional machining center equipment is used.Through new program post processor, directly generate the nc program that is used to process various cam curve shape faces.
2, cam-shaped face CNC processing technology and cutter are selected
Three machining centers+horizontal revolving workbench combination and common vertical milling+horizontal revolving workbench combination use, principle is the same in machining cam radially.With plain cutter in vertical camshaft line machining cam; The milling cutter center line passes through cam centre line; Center line can form good cam tangent plane; And actual machining cam is milling cutter side edge (side bus) processing, and does not produce the offset error amount through cam centre line, thus unavoidable generation processing over-cutting; Tool diameter is big more, and over-cutting is also obvious more, and must make protruding, recessed mating surface of taking turns assembling is not the face contact, but the line contact.If will use three Cutter Body Processing with Machining Center contact-making surfaces cam preferably, must be according to cam helical pitch and processing characteristics:
1) selects to confirm tool diameter earlier;
2) calculated radially the cone of tangents angle again according to tool diameter; And then according to diameter and mistake cone of tangents angle subscription specific milling cutter (the different required cutters of cam helical pitch are also inequality, and the cutter specificity is stronger);
3) confirm to select the maximum gauge milling cutter according to the cam recess flex point R of place;
4) calculate tool displacement coordinate figure (the cutter side edge is offset to " X, Y coordinate figure " on the cam centre line, vertical, overlap) again with cam centre line;
5) be used to process various cam curve shape face nc programs with the post processor generation.
3, create cam procedure and processing
Accomplish cutter selection and tool displacement coordinate figure and calculate, promptly can use new post processor, create the various cam curve shape of the processing face numerical control application program that is suitable for three machining centers uses.Following Y-1 is with fine finishining certain applications program (milling cutter diameter Φ 3/2 is less than cam recess flex point R=2).
Following procedure is the part of the procedure that provides to specific products
The present invention compares the advantage that prior art has: product shape face dimensionally stable, and shaped form surface roughness, precision are high; Good product quality, the manufacturing cycle is short and efficient is high.
Description of drawings
The drawing of accompanying drawing is explained as follows:
Fig. 1, Fig. 2 and Fig. 3 are the cam example schematic that processes with method of the present invention.
Fig. 4 and Fig. 5 are milling cutter side edge (side bus) processing sketch mapes.Wherein 1 be milling cutter.
Fig. 6 is the A-A cross-sectional schematic among Fig. 5.Wherein 2 be the scope of cutting.
Fig. 7 cuts cam binding face sketch map.Wherein 3 cross tangent plane for overhead cam, 4 is overhead cam, 5 cross tangent plane for cam down, 6 are cam down.
Fig. 8 is normal cam binding face sketch map.Wherein 4 be overhead cam, 6 are cam down, 7 is the cam binding face.
Fig. 9 and Figure 10 are cam fine finishining cutter rail and computer simulation emulation sketch map.
Figure 11 and Figure 12 are X, Y axial displacement amount sketch map, wherein 1 be milling cutter, 8 is tool diameter, 9 is the vertical coincide point with camshaft line of cutter side edge, 10 are the preceding tool position of skew, 11 are tool position, skew back.
The specific embodiment
The present invention does further to detail below in conjunction with accompanying drawing and embodiment:
1, creates definition and the FANUC system is set with the rearmounted file of handling
Processing characteristics according to three FANUC system numerical control machining center equipment; To UGNX software numerical control device systems soft ware post processor instrument, set up one of customization and be suitable for the new post processor file particular tool (multiaxis program post processor) of FANUC control system that three-dimensional machining center equipment is used.Through new program post processor, directly generate the nc program that is used to process various cam curve shape faces.
2, cam-shaped face CNC processing technology and cutter are selected
Three machining centers+horizontal revolving workbench combination and common vertical milling+horizontal revolving workbench combination use, principle is the same in machining cam radially.With plain cutter in vertical camshaft line machining cam; The milling cutter center line passes through cam centre line; Center line can form good cam tangent plane; And actual machining cam is milling cutter side edge (side bus) processing (like Fig. 4, Fig. 5 and Fig. 6), and does not produce the offset error amount through cam centre line, thus unavoidable generation processing over-cutting (like Fig. 7 and Fig. 8); Tool diameter is big more, and over-cutting is also obvious more, and must make protruding, recessed mating surface of taking turns assembling is not the face contact, but the line contact.If will use three Cutter Body Processing with Machining Center contact-making surfaces cam preferably, must be according to cam helical pitch and processing characteristics:
1) selects to confirm tool diameter earlier;
2) calculated radially the cone of tangents angle again according to tool diameter; And then according to diameter and mistake cone of tangents angle subscription specific milling cutter (the different required cutters of cam helical pitch are also inequality, and the cutter specificity is stronger);
3) confirm to select the maximum gauge milling cutter according to the cam recess flex point R of place;
4) calculate tool displacement coordinate figure (the cutter side edge is offset to " X, Y coordinate figure " on the cam centre line, vertical, overlap) again with cam centre line;
5) be used to process various cam curve shape face nc programs with the post processor generation.
3, create cam procedure and processing
Accomplish cutter selection and tool displacement coordinate figure and calculate, promptly can use new post processor, create the various cam curve shape of the processing face numerical control application program that is suitable for three machining centers uses.Following Y-1 is with fine finishining certain applications program (milling cutter diameter Φ 3/2 is less than cam recess flex point R=2); Cam fine finishining cutter rail and computer simulation emulation such as Fig. 9 and Figure 10.
The cam procedure can be worked out according to specific product separately.So excess stock is just removed in machining cam roughing in early stage, X, the Y axial coordinate of the machining center of needn't considering to squint; And fine finishining must be pressed the displacement coordinate value that cutter calculates, X, Y reference axis such as Figure 11 and Figure 12 of skew machining center.At last just can process the cam that meets drawing requirement fully.
Machining cam radially; If with five (five coordinates) above numerical control machining center processing; Because of the rotating shaft of A axle, B axle can realize interlock, thus Selection of Cutting there are not special demands, as long as the common standard milling cutter that selection tool diameter Φ/2 are less than or equal to cam recess flex point R can be realized.
Supply the numer centre machining cam to use.
Claims (5)
1. the method for a three-dimensional numer centre machining cam is characterized in that: 1, create definition and the FANUC system is set with the rearmounted file of handling; 2, cam-shaped face CNC processing technology and cutter are selected; 3, create cam procedure and processing.
2. according to the method for the three-dimensional numer centre machining cam described in the claim 1; It is characterized in that: it is the processing characteristics according to three FANUC system numerical control machining center equipment with rearmounted processing file that described establishment definition is provided with the FANUC system; To UGNX software numerical control device systems soft ware post processor instrument; Set up one of customization and be suitable for the new post processor file particular tool (multiaxis program post processor) of FANUC control system that three-dimensional machining center equipment is used; Through new program post processor, directly generate the nc program that is used to process various cam curve shape faces.
3. according to the method for the three-dimensional numer centre machining cam described in the claim 1, it is characterized in that: described cam-shaped face CNC processing technology and cutter selection are:
1) selects to confirm tool diameter earlier;
2) calculated radially the cone of tangents angle again according to tool diameter; And then according to diameter and mistake cone of tangents angle subscription specific milling cutter (the different required cutters of cam helical pitch are also inequality, and the cutter specificity is stronger);
3) confirm to select the maximum gauge milling cutter according to the cam recess flex point R of place;
4) calculate tool displacement coordinate figure (the cutter side edge is offset to " X, Y coordinate figure " on the cam centre line, vertical, overlap) again with cam centre line;
5) be used to process various cam curve shape face nc programs with the post processor generation.
4. according to the method for the three-dimensional numer centre machining cam described in the claim 1; It is characterized in that: described establishment cam procedure and processing are to accomplish cutter selection and the calculating of tool displacement coordinate figure; Promptly can use new post processor, create the various cam curve shape of the processing face numerical control application program that is suitable for three machining centers uses.
5. according to the method for the three-dimensional numer centre machining cam described in the claim 1; It is characterized in that: machining cam radially; If with the processing of the numerical control machining center more than five, as long as the common standard milling cutter of selecting tool diameter Φ/2 to be less than or equal to cam recess flex point R can be realized.
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| CN2011100276728A CN102615319A (en) | 2011-01-26 | 2011-01-26 | Method for processing cam with three-coordinate numerical control center |
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| CN2011100276728A CN102615319A (en) | 2011-01-26 | 2011-01-26 | Method for processing cam with three-coordinate numerical control center |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962650A (en) * | 2012-12-16 | 2013-03-13 | 重庆望江工业有限公司 | Method for manufacturing prismatic profiling facing cam |
| CN104439442A (en) * | 2014-09-23 | 2015-03-25 | 北汽福田汽车股份有限公司 | Method for processing molded surface of mold |
| CN105269052A (en) * | 2015-11-19 | 2016-01-27 | 中国南方航空工业(集团)有限公司 | Method for machining precision camshaft |
| CN106180835A (en) * | 2016-08-05 | 2016-12-07 | 深圳市欣天科技股份有限公司 | A kind of processing method of Complex Different Shape axle |
| CN111185781A (en) * | 2020-01-09 | 2020-05-22 | 东莞亿诚精密模具有限公司 | Special jig and method for machining ball head striking surface of rotary platform machine tool |
| CN114683008A (en) * | 2022-04-24 | 2022-07-01 | 成都飞机工业（集团）有限责任公司 | Machining method for high-precision coaxial lug taper hole |
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| CN101008439A (en) * | 2006-11-03 | 2007-08-01 | 浙江大学宁波理工学院 | Processing method for groove of oscillating follower cylinder cam |
| CN101149614A (en) * | 2007-10-30 | 2008-03-26 | 浙江大学宁波理工学院 | Oscillating follower space cam groove non-equal diameter digital control processing method |
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2011
- 2011-01-26 CN CN2011100276728A patent/CN102615319A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101008439A (en) * | 2006-11-03 | 2007-08-01 | 浙江大学宁波理工学院 | Processing method for groove of oscillating follower cylinder cam |
| CN101149614A (en) * | 2007-10-30 | 2008-03-26 | 浙江大学宁波理工学院 | Oscillating follower space cam groove non-equal diameter digital control processing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962650A (en) * | 2012-12-16 | 2013-03-13 | 重庆望江工业有限公司 | Method for manufacturing prismatic profiling facing cam |
| CN104439442A (en) * | 2014-09-23 | 2015-03-25 | 北汽福田汽车股份有限公司 | Method for processing molded surface of mold |
| CN105269052A (en) * | 2015-11-19 | 2016-01-27 | 中国南方航空工业(集团)有限公司 | Method for machining precision camshaft |
| CN106180835A (en) * | 2016-08-05 | 2016-12-07 | 深圳市欣天科技股份有限公司 | A kind of processing method of Complex Different Shape axle |
| CN111185781A (en) * | 2020-01-09 | 2020-05-22 | 东莞亿诚精密模具有限公司 | Special jig and method for machining ball head striking surface of rotary platform machine tool |
| CN114683008A (en) * | 2022-04-24 | 2022-07-01 | 成都飞机工业（集团）有限责任公司 | Machining method for high-precision coaxial lug taper hole |
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Application publication date: 20120801 |