CN1796033A - Molding cutter for worm and application - Google Patents
Molding cutter for worm and application Download PDFInfo
- Publication number
- CN1796033A CN1796033A CN 200410101623 CN200410101623A CN1796033A CN 1796033 A CN1796033 A CN 1796033A CN 200410101623 CN200410101623 CN 200410101623 CN 200410101623 A CN200410101623 A CN 200410101623A CN 1796033 A CN1796033 A CN 1796033A
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- cutter
- worm screw
- gear hobbing
- workpiece
- moulding
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Abstract
The present invention relates to a forming tool for worm and forming method for making said worm by using said forming tool. The external periphery of the described forming tool is equipped with several hobs, the external tooth face of said hob is divided into first hobbing portion for rough hobbing and second hobbing portion for fine hobbing, between external tooth face of first hobbing portion and axis of said forming tool a rough cutting angle with about 15deg. is formed, and said second hobbing portion is formed into a smooth cutting edge, and the tooth depth of said second hobbing portion is equal to the tooth depth of formed worm. Besides, said invention also provides the concrete steps of said forming method.
Description
Technical field
The present invention relates to molding cutter and the application thereof of a kind of worm screw, refer to a kind of gear hobbing shape of utilizing particular design especially, plasticly go out the worm screw molding cutter of worm screw and use this cutter to make the forming method of this worm screw.
Background technology
Traditional worm processing method, generally be directly to utilize shaped profile turning cutter carry out car system, perhaps utilize multiple-cutting-edge dish-like, refer to that the type milling cutter mills the roughing operation of system or the like, afterwards, carries out the fine finishining operation via the emery wheel disc sharpener again, make the worm screw surface sclerosis after the moulding, and when carrying out the fine finishining operation of disc sharpener, be to utilize worm screw to move, emery wheel is then unshift, and worm screw is the low-rotate speed that is maintained at about 20rpm, and emery wheel keeps the fast rotating speed of 15000rpm approximately;
Yet, no matter be to utilize shaped profile turning cutter carry out car system, perhaps utilize multiple-cutting-edge dish-like, refer to that the type milling cutter mills system, it all needs cutter to carry out the feeding of continous way, it is very consuming time not only to process operation, and when it utilizes emery wheel to carry out fine finishining, the easier damage that causes emery wheel, break, more do not have an economic and practical.
Please cooperate consult shown in Figure 6, forming method for another kind of worm screw, it is to utilize two relative spiral formings to change to make gear 50 to change to make, because worm screw 60 precision that the process commentaries on classics is made after the processing are relatively poor, so need utilize emery wheel to carry out the fine finishining operation mostly in addition, so forming method also can't be escaped the disadvantage that emery wheel damages, breaks certainly; Therefore, in view of the various shortcoming of all aforementioned prior art worm screw forming methods, necessity that it work is further improved is arranged in fact.
The inventor is because there are many shortcomings in the forming method of prior art worm screw, so be engaged in worm screw making experience for many years with it, think solution at above problem scheme, and, develop the molding cutter of a kind of worm screw that solves above-mentioned prior art shortcoming finally and use this cutter to make the forming method of this worm screw through repeatedly studying and updating.
Summary of the invention
Main purpose of the present invention is to provide a kind of and makes worm screw be able to a fine finishining moulding, and machine-shaping speed is fast, is fit to the molding cutter of mass-produced worm screw and uses this cutter to make the forming method of this worm screw.
For reaching aforesaid purpose, the invention provides the molding cutter of a kind of worm screw, the outer peripheral edges of this cutter have some gear hobbings, the outer flank of tooth of this gear hobbing is divided into first gear hobbing portion of the thick gear hobbing of tool and the second gear hobbing portion of the smart gear hobbing of tool, the rough lumber angle that is about 15 degree between the outer flank of tooth of this first gear hobbing portion and this tool axis (also can be described as knife angle, be that cutter is when just contacting with machining object, for fear of producing excessive resistance to impact, can form an oblique angle on the cutter limit and contact machining object gradually) in order to cutter, and this flat cutting blade of second gear hobbing portion, and the tooth depth of this second gear hobbing portion equals the tooth depth of the worm screw after the moulding.
The forming method that uses this cutter to make this worm screw comprises: car system external form, the steps such as making processing and gear hobbing processing of changeing; Wherein:
Car system external form: be earlier with piece-holder in chuck, in the mode of lathe tool car system, make an end of this workpiece form a portion to be formed;
Change and to make processing: utilize two relative moulding to change to make wheel that the portion to be formed of this workpiece is molded preliminary helical tooth portion;
Gear hobbing processing: with piece-holder in chuck, cutter of the present invention is oblique towards right avertence, make the axis of this cutter and the axis of this workpiece be an angle of deviation, carry out fine finishining with helical tooth portion to this workpiece, this angle of deviation is to desire the difference of the lead angle of the lead angle of worm screw of moulding and this cutter, and this cutter and this workpiece are synchronous speed ratio, and the wheelbase of this cutter and this workpiece is stationary state, so, just, processed the worm screw finished product.
Wherein, when the pitch of this worm screw equaled the pitch of this cutter, the lead angle of this worm screw will be greater than the lead angle of this cutter.
Above-mentioned explanation only is the general introduction of Partial Feature of the present invention; for the professional technique personage that makes this area can clearer understanding technological means of the present invention; and can implement according to this according to this description; so conjunction with figs. of the present invention is illustrated; the following stated in order to explain preferred embodiment of the present invention, is not that the present invention is done any pro forma restriction, therefore only; allly do relevant any modification of the present invention or change in that identical creation spirit is following, all should be included in the scope of protection of the invention.
Description of drawings
Fig. 1 is the schematic appearance of gear hobbing cutter of the present invention.
Fig. 2 is the side schematic view of gear hobbing cutter of the present invention.
Fig. 3 is a schematic flow sheet of the present invention.
Fig. 4 carries out the side schematic view of gear hobbing processing for the present invention.
Fig. 5 is the side schematic view after the worm screw moulding of the present invention.
Fig. 6 is the making schematic diagram of prior art worm screw.
Drawing reference numeral explanation: chuck 10; Worm screw 20; Helical tooth portion 21; Cutter 30; Gear hobbing 31; The first gear hobbing portion 311; The second gear hobbing portion 312; Rough lumber angle α; Lead angle β
1Lead angle β
2Angle of deviation γ; Pitch P
1Pitch P
2Helical pitch L
1Tooth depth TD; Tooth depth WD; Gear 50 is made in the moulding commentaries on classics; Worm screw 60.
The specific embodiment
Please cooperate and consult Fig. 1 to shown in Figure 5, the present invention is the molding cutter of a kind of worm screw and uses this cutter to make the forming method of this worm screw, the outer peripheral edges of this cutter 30 have some gear hobbings 31, the outer flank of tooth of this gear hobbing 31 is divided into first gear hobbing portion 311 of the thick gear hobbing of tool and the second gear hobbing portion 312 of the smart gear hobbing of tool, the rough lumber angle α that is about 15 degree between the outer flank of tooth of this first gear hobbing portion 311 and this cutter 30 axis, and the flat cutting blade of this second gear hobbing portion 312, and the tooth depth TD of this second gear hobbing portion 312 equals the tooth depth WD (please cooperate and consult Figure 1 and Figure 2) of the worm screw 20 after the moulding.
In addition, use this cutter 30 to make the forming method of this worm screw 20, this method comprises: car system external form, the steps such as making processing and gear hobbing processing of changeing, to finish worm screw 20 finished products of the present invention (please cooperate consult shown in Figure 3); Wherein:
Car system external form: be earlier with piece-holder in chuck 10, in the mode of lathe tool car system, make an end of this workpiece form one to be formed (this be the machined into mode of general prior art, non-creation emphasis of the present invention, in this, other does not describe with accompanying drawing);
Change and to make processing: utilize two relative moulding to change to make wheel (please cooperate and consult shown in Figure 6ly, this moulding is changeed and made that to take turns be prior art constructions, and non-creation emphasis of the present invention is not so give unnecessary details in addition in this) that the portion to be formed of this workpiece is molded preliminary helical tooth portion 21;
Gear hobbing processing: please cooperate and consult Fig. 4 and shown in Figure 5, with piece-holder in chuck 10, utilize this cutter 30 oblique towards right avertence, make the axis of this cutter 30 and the axis of this workpiece be an angle of deviation γ, carry out fine finishining with the helical tooth portion 21 to this workpiece, this angle of deviation γ is the lead angle β that desires the worm screw 20 of moulding
2Lead angle β with this cutter 30
1Difference, and this cutter 30 is synchronous speed ratio with this workpiece, and this cutter 30 and the wheelbase of this workpiece are stationary state (please cooperate consult shown in Figure 4);
So, promptly be accomplished the moulding (please cooperate consult shown in Figure 5) of worm screw 20 of the present invention.
Moreover, as the pitch P of worm screw 20
2Equal the pitch P of cutter 30
1The time, the lead angle β of worm screw 20
2Will be greater than the lead angle β of cutter 30
1In addition, the helical pitch L of worm screw 20
1Equal pitch P
1Multiply by age of a draught animal number, for example: age of a draught animal number is 1 o'clock, the helical pitch L of worm screw 20
1Equal pitch P
1
Because worm screw 20 of the present invention is to adopt the gear hobbing processing method, utilize the cutter 30 of particular design to be synchronous speed ratio state with worm screw 20, and only move with gear hobbing cutter 30, and worm screw 20 is motionless, worm screw 20 is done the fine finishining operation, make worm screw 20 be able to a fine finishining moulding, whole machine-shaping speed is fast, extremely is fit to a large amount of production.
Certainly, the present invention when carrying out the gear hobbing procedure of processing, the rotating speed of control cutter 30 and worm screw 20, and plasticly go out the above helical tooth portion 21 in two wires; For example: the rotating speed of control cutter 30 is 1000rpm, and the rotating speed of worm screw 20 is 500rpm, so, according to different cutters 30 and the rotating ratio of worm screw 20, just produced the worm screw 20 of two wires helical tooth portion 21, whole control mode is simple and convenient, and worm screw 20 making of suitable multispiral, and applicability is extremely wide.
Claims (3)
1, the molding cutter of a kind of worm screw, the outer peripheral edges of this cutter have some gear hobbings, the outer flank of tooth of this gear hobbing is divided into first gear hobbing portion of the thick gear hobbing of tool and the second gear hobbing portion of the smart gear hobbing of tool, the rough lumber angle that is about 15 degree between the outer flank of tooth of this first gear hobbing portion and this tool axis, and this flat cutting blade of second gear hobbing portion, and the tooth depth of this second gear hobbing portion equals the tooth depth of the worm screw after the moulding.
2, the application of the defined worm screw molding cutter of a kind of claim 1, with this cutter moulding worm screw, described worm screw forming method comprises: car system external form, the steps such as making processing and gear hobbing processing of changeing; Wherein:
Car system external form: be earlier with piece-holder in chuck, in the mode of lathe tool car system, make an end of this workpiece form a portion to be formed;
Change and to make processing: utilize two relative moulding to change to make wheel that the portion to be formed of this workpiece is molded preliminary helical tooth portion;
Gear hobbing processing: with piece-holder in chuck, utilize this cutter oblique towards right avertence, make the axis of this cutter and the axis of this workpiece be an angle of deviation, carry out fine finishining with helical tooth portion to this workpiece, this angle of deviation is to desire the difference of the lead angle of the lead angle of worm screw of moulding and this cutter, and this cutter and this workpiece are synchronous speed ratio, and the wheelbase of this cutter and this workpiece is stationary state, so, just, processed the worm screw finished product.
3, the application of worm screw molding cutter as claimed in claim 2, wherein, when the pitch of institute moulding worm screw equaled the pitch of this cutter, the lead angle of this worm screw will be greater than the lead angle of this cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101623 CN1796033A (en) | 2004-12-21 | 2004-12-21 | Molding cutter for worm and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101623 CN1796033A (en) | 2004-12-21 | 2004-12-21 | Molding cutter for worm and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1796033A true CN1796033A (en) | 2006-07-05 |
Family
ID=36817474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410101623 Pending CN1796033A (en) | 2004-12-21 | 2004-12-21 | Molding cutter for worm and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1796033A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843739A (en) * | 2018-06-29 | 2018-11-20 | 吉林大学 | The double line contacted biased Worm Gear Drive Designs of lead of bull and processing method |
| CN109317764A (en) * | 2018-11-20 | 2019-02-12 | 成都豪能科技股份有限公司 | Multiple tooth method of processing parts and multiple tooth part cutting tool |
-
2004
- 2004-12-21 CN CN 200410101623 patent/CN1796033A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843739A (en) * | 2018-06-29 | 2018-11-20 | 吉林大学 | The double line contacted biased Worm Gear Drive Designs of lead of bull and processing method |
| CN109317764A (en) * | 2018-11-20 | 2019-02-12 | 成都豪能科技股份有限公司 | Multiple tooth method of processing parts and multiple tooth part cutting tool |
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