CN101602127A - The method of processing spherical worm gear on universal milling machine - Google Patents
The method of processing spherical worm gear on universal milling machine Download PDFInfo
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- CN101602127A CN101602127A CNA2009100690538A CN200910069053A CN101602127A CN 101602127 A CN101602127 A CN 101602127A CN A2009100690538 A CNA2009100690538 A CN A2009100690538A CN 200910069053 A CN200910069053 A CN 200910069053A CN 101602127 A CN101602127 A CN 101602127A
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Abstract
The invention provides a kind of method of processing globoid worm gear on universal milling machine, the pressure angle that this method includes by national Specification setting metric system gear is 20 ° of angles; With workpiece to be machined---worm gear is stuck on the dividing head of universal milling machine workbench, standardized cross centre line and addendum width line behind the centering; By the hand of spiral of worm screw and the big or small rotating screw angle β at worm spiral angle, in the engagement of processing work-worm gear and worm screw, the hand of spiral of the two engaging tooth is identical, makes to require processing work-worm gear and worm screw correct engagement with the universal milling machine workbench; The dividing head of universal milling machine workbench being rotated 20 ° of angles to the left or to the right, makes workpiece to be machined---the M face of worm gear and the flank of tooth of N face be perpendicular to work top, the flank of tooth of machining worm wheel; Carry out break-in with the worm screw that matches again.Beneficial effect be this method can be on universal milling machine the processing spherical worm gear, cost is low, the duration is short, reduces frock, is suitable for the processing of the spherical worm gear of single-piece in particular cases.
Description
Technical field
The present invention relates to a kind of on universal milling machine the technology of processing spherical worm gear.
Background technology
According to the shape of worm indexing curved surface, worm-drive can be divided into three major types: cylindrical worm gearing transmission, enveloping worm transmission and Procedure for Spiroid Gearing.The hindley worm transmission is commonly called as the hindley screw transmission, just belongs to a kind of in the enveloping worm transmission.
In the worm and gear transmission, because the material difference of worm gear, worm screw, worm gear is generally copper, is consumable accessory; And worm screw is the carbon steel manufacturing, and the surface heat-treats, and hardness is higher, and is not fragile.Cylindrical worm gearing transmission is compared with the hindley screw transmission, be the monodentate stress basically, and the hindley screw transmission is to have five flank of tooth to mesh simultaneously, and stress is better than cylindrical worm gearing transmission far away.
Though hindley screw gearratio cylindrical worm gearing transmission has many good qualities, the machined of spherical worm gear is more much more difficult than common worm gear, and needs to carry out at special purpose machine tool.Seldom run into the maintenance of globoid worm gear as shiyard reality, so the special-purpose lathe of purchasing is also unrealistic.If, generally also be that the contact special manufacturer carries out outer processing in case run into the maintenance of globoid worm gear and manufacture.Yet do not having under the situation of special purpose machine tool for enterprise conveniently, how about globoid worm gear is carried out processing and fabricating? provide a kind of technological method for processing here: the method for processing spherical worm gear on universal milling machine.
Summary of the invention
For solving the problem that exists in above-mentioned, the invention provides a kind of on universal milling machine the method for processing spherical worm gear, be beneficial to solve fast processing single-piece reparation or supporting needs, production cost is low, simple operation.
For achieving the above object, the technical solution used in the present invention provides a kind of method of processing globoid worm gear on universal milling machine, and this method includes following steps:
1., the pressure angle by national Specification setting metric system gear is 20 ° of angles;
2., workpiece to be machined-worm gear is stuck on the dividing head of universal milling machine workbench, standardized cross centre line behind the centering is pressed the standardized again addendum width line of center line;
3., the universal milling machine workbench is pressed the hand of spiral of worm screw and the big or small rotating screw angle β at worm spiral angle, in the engagement of processing work-worm gear and worm screw, the hand of spiral of the two engaging tooth is identical, and worm screw is dextrorotation, and workbench is that benchmark is rotated counterclockwise helixangle with the knife bar axis; Worm screw is left-handed, and workbench is the benchmark helixangle that turns clockwise with the knife bar axis, makes to require processing work-worm gear and worm screw correct engagement;
4., the dividing head with the universal milling machine workbench rotates 20 ° of angles to the left or to the right, make the M flank of tooth of workpiece to be machined-worm gear and the N flank of tooth all perpendicular to work top, add and to be as the criterion with the 2. described center line of step man-hour, about all go, two flank of tooth of each worm-gear toothing of processing work-worm gear are wanted made allowance 1-2mm during roughing; Tooth depth is by the spherical worm gear finished size line processing of designing requirement, and the tool diameter size adds 3-5mm by the worm screw external diameter;
5., must be benchmark during fine finishining with the corresponding tooth of described center line, to the B line, the M flank of tooth that makes workpiece to be machined-worm gear is perpendicular to workbench from 20 ° of angles of A alignment anticlockwise, and two sides, the left and right sides evenly cutting is gone, once do not arrive the finished size line, leave surplus 1-2mm;
6., with step method 5., be as the criterion to 20 ° of angles of anticlockwise to the D line with the A line, the N flank of tooth that makes workpiece to be machined-worm gear is perpendicular to workbench, the related data that refers again to worm screw gets final product.
7., because workpiece to be machined-worm gear is that there is error on the precision in processing on non-special purpose machine tool, need carry out break-in with the worm screw that matches, during break-in the contact hard spot of workpiece to be machined-worm gear flank of tooth and stiff dough stroked and can reach instructions for use after scraping.
Effect of the present invention be this method can be on universal milling machine the processing spherical worm gear, spherical worm gear is in working order the time, there are five flank of tooth to mesh simultaneously with worm screw, like this under situation with equal modulus, the common worm gear of various mechanical property ratios can increase by 500, but have differently greatly with the processing method of common worm gear in process, difficulty is very big.Must use special purpose machine tool to process theoretically, all must design and produce a lot of frock tools at every turn according to the related data of worm screw.Though this kind processing method machining accuracy height, cost is bigger, and is long in time limit, only is applicable to batch process.But when Ship's Repair and maintenance of equipment, most of living-articles are to renew with reparation or single-piece, and are very inapplicable in order to last method.On universal milling machine, process this workpiece in this case, utilize non-special purpose machine tool to process special-purpose worm gear, reduced a lot of frock tools, made one to become simple and direct, for the processing of under special circumstances the spherical worm gear of single-piece provides feasible process than complicated operations.Though machining accuracy is not as special purpose machine tool, by practice, being used on ship deck machinery or the slow-speed of revolution equipment is feasible fully and practicality.
Description of drawings
Fig. 1 is spherical worm gear schematic diagram;
Fig. 2 is frock processing schematic diagram;
Fig. 3 is the roughing schematic diagram;
Fig. 4, Fig. 5 are the fine finishining schematic diagram.
Among the figure:
1, worm screw 2, worm gear 3, workbench 4, dividing head
5, knife bar axis 6, knife bar 7, cutter β, helical angle
A, central cross line B, certain tooth symmetrical center line D, certain tooth symmetrical center line
Axial actual size between the 1st tooth of C, worm screw and the 5th the tooth flank of tooth
Size between the outer flank of tooth of any 5 continuous teeth of the processed worm gear of C '
M, the root circle of N, flank of tooth Df, processed worm gear
The specific embodiment
Reach in conjunction with the accompanying drawings embodiment to of the present invention on universal milling machine the method for processing spherical worm gear be illustrated.
The technical solution used in the present invention provide a kind of on universal milling machine the method for processing spherical worm gear, this method includes following steps:
1, the pressure angle of national Specification metric system gear is generally 20 ° of angles, and the profile of tooth pressure angle of worm gear also is 20 °.
2, processing work-worm gear 2 is stuck on the dividing head 4 of universal milling machine, standardized central cross line behind the centering, by the standardized again addendum width line in center, and with the finished size line of workpiece-worm gear 2 teeth, be finally the complete intersection and the roughing reference line of the flank of tooth and worm gear end face of worm gear, promptly the line with the finished size line parallel marks in the lump.
3, workbench 3 has been removed helixangle by the size of the helical angle of the hand of spiral of worm screw 1 and worm screw 1, the size of general helixangle changes with the size of modulus m and the size of worm screw 1 diameter.As shown in Figure 2.Need to prove: in the engagement of worm gear 1 and workpiece-worm gear 2, the hand of spiral of the two tooth is identical, promptly is all left-handed and is all dextrorotation.Suppose that worm screw is dextrorotation, then workbench 3 should be that benchmark rotates up helixangle counterclockwise with knife bar axis 5; Suppose worm screw 1 for left-handed, then workbench 3 should be that benchmark is rotated down helixangle clockwise with the knife bar axis 5 of knife bar 6.According to the workpiece-worm gear 2 of above-mentioned requirements processing can with worm screw 1 correct engagement.
4, by shown in Figure 3, earlier workpiece-worm gear 2 teeth groove are carried out roughing, tooth depth is pressed finished product processing, i.e. and the root circle Df processing by worm gear puts in place.
5, by shown in Figure 4, must be benchmark with the corresponding tooth of center line during fine finishining, from 20 ° of cross A alignment anticlockwises to another tooth center line B line, the flank of tooth M that makes workpiece to be machined-worm gear 2 is perpendicular to workbench 3, evenly cut on two sides, the left and right sides, once do not arrive the finished size line, leave a small amount of surplus 1-2mm, fine finishining schematic diagram as shown in Figure 4.
6, with the method for Fig. 4, be as the criterion to 20 ° of right rotations to another tooth center line D line with central cross line A, the flank of tooth N that makes workpiece to be machined-worm gear 2 is perpendicular to workbench 3, and the flank of tooth N that makes workpiece to be machined-worm gear 2 is perpendicular to workbench 3, and evenly cut on two sides, the left and right sides, once do not arrive the finished size line, leave a small amount of surplus 1-2mm, other relative dimensions, similar as outside circle, root circle, transverse tooth thickness etc. to the common worm gear of processing, the relevant data that refers again to worm screw gets final product, as shown in Figure 5.
7, it needs to be noted: as shown in Figure 1, size C represents the 1st tooth of worm screw and the axial actual size between the 5th tooth flank of tooth; As shown in Figure 5, the size between the outer flank of tooth of any 5 continuous teeth of the processed worm gear of size C ' representative.In the engagement of reality, size C and size C ' are the engagement size, and guarantee size C '＜size C, should be the little cooperation in gap.If the situation of size C '＞size C, the two just can not carry out normal engaged transmission, also must carry out fine finishining, can cut fine finishining by 0.5 times of two flank of tooth to each tooth of worm gear greater than amount.
8, because this worm gear is processed, necessarily there is the error on the precision on non-special purpose machine tool, need carries out break-in with the worm screw that matches; During break-in the contact hard spot of the worm gear flank of tooth and stiff dough stroked to scrape and to reach instructions for use.
9, the operation element personnel will have for many years working experience and Gear Processing knowledge.
Claims (1)
1, a kind of method of on universal milling machine, processing globoid worm gear, this method includes following steps:
1., the pressure angle by national Specification setting metric system gear is 20 ° of angles;
2., workpiece to be machined-worm gear (2) is stuck on the dividing head of universal milling machine workbench, standardized cross centre line behind the centering is pressed the standardized again addendum width line of center line;
3., the universal milling machine workbench is pressed the hand of spiral of worm screw (1) and the big or small rotating screw angle β at worm spiral angle, in the engagement of processing work-worm gear (2) and worm screw, the hand of spiral of the two engaging tooth is identical, worm screw (1) is dextrorotation, and workbench (3) is that benchmark is rotated counterclockwise helixangle with knife bar axis (4); Worm screw (1) is left-handed, and workbench (3) is the benchmark helixangle that turns clockwise with knife bar axis (4), makes to require processing work-worm gear (2) and worm screw (1) correct engagement;
4., the dividing head with the universal milling machine workbench rotates 20 ° of angles to the left or to the right, make the M flank of tooth of workpiece to be machined-worm gear (2) and the N flank of tooth all perpendicular to work top (3), add and to be as the criterion with the 2. described center line of step man-hour, about all go, two flank of tooth of each worm-gear toothing of processing work-worm gear during roughing (2) are wanted made allowance 1-2mm; Tooth depth is by the spherical worm gear finished size line processing of designing requirement, and the tool diameter size adds 3-5mm by worm screw (1) external diameter;
5., must be benchmark during fine finishining with the corresponding tooth of described center line, to the B line, the M flank of tooth that makes workpiece to be machined-worm gear (2) is perpendicular to workbench from 20 ° of angles of A alignment anticlockwise, and two sides, the left and right sides evenly cutting is gone, once do not arrive the finished size line, leave surplus 1-2mm;
6., with step method 5., be as the criterion to 20 ° of angles of anticlockwise to the D line with the A line, the N flank of tooth that makes workpiece to be machined-worm gear (2) is perpendicular to workbench (3), the related data that refers again to worm screw gets final product.
7., because workpiece to be machined-worm gear (2) is to process the error that exists on the precision on non-special purpose machine tool, need carry out break-in with the worm screw that matches, during break-in the contact hard spot of workpiece to be machined-worm gear (2) flank of tooth and stiff dough be stroked and to reach instructions for use after scraping.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100690538A CN101602127A (en) | 2009-05-31 | 2009-05-31 | The method of processing spherical worm gear on universal milling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495778A (en) * | 2013-10-14 | 2014-01-08 | 贵州中电振华精密机械有限公司 | Machining method for high-precision straight outline ring surface worm gear pair |
| CN114273733A (en) * | 2021-12-23 | 2022-04-05 | 中国兵器工业集团江山重工研究院有限公司 | Method for machining tooth grooves of worm gears |
-
2009
- 2009-05-31 CN CNA2009100690538A patent/CN101602127A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495778A (en) * | 2013-10-14 | 2014-01-08 | 贵州中电振华精密机械有限公司 | Machining method for high-precision straight outline ring surface worm gear pair |
| CN114273733A (en) * | 2021-12-23 | 2022-04-05 | 中国兵器工业集团江山重工研究院有限公司 | Method for machining tooth grooves of worm gears |
| CN114273733B (en) * | 2021-12-23 | 2023-06-09 | 中国兵器工业集团江山重工研究院有限公司 | Worm gear tooth groove processing method |
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Open date: 20091216 |