CN103071864B - Toothed indexable worm gear hob for planar secondary enveloping worm drive - Google Patents
Toothed indexable worm gear hob for planar secondary enveloping worm drive Download PDFInfo
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- CN103071864B CN103071864B CN201310033278.4A CN201310033278A CN103071864B CN 103071864 B CN103071864 B CN 103071864B CN 201310033278 A CN201310033278 A CN 201310033278A CN 103071864 B CN103071864 B CN 103071864B
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- throw away
- indexable insert
- cutter hub
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Abstract
The invention discloses a toothed indexable worm gear hob for planar secondary enveloping worm drive. The toothed indexable worm gear hob comprise a hob body, wherein a plurality of rows of straight channels are formed in the periphery of the hob body uniformly along an axial direction and are respectively provided with an elongated shim in an insertion manner, each elongated shim is low in middle and high in two ends so as to adapt to the shape of the periphery of the hob body, and a plurality of grooves for positioning indexable hob blades are machined in the elongated shims and are provided with the detachable indexable hob blades in the insertion manner. The worm gear hob is convenient to manufacture, high in machining precision and long in service life and is economic and reliable.
Description
Technical field
The present invention relates to the inserted indexable worm gear hob of a kind of Double enveloping hourglass worm gearing.
Background technology
Common Double enveloping hourglass worm gearing worm gear hob can be divided into monoblock type, inserted-blade type and inserted tooth type.For monoblock type, because entirety adopts high-speed steel manufacture, cost is too high, lacks economy.Inserted-blade type and inserted tooth type are that blade or cutter tooth adopt high-speed steel manufacture, body portion adopts high-quality structural steel, relative to monoblock type, cost is lower, but is no matter monoblock type or inserted-blade type or inserted tooth type, all on the special purpose machine tool of processing plane twice-enveloping enveloping worm, need carry out grinding by the mode meeting its forming principle to blade, then the mode of manual back-off is adopted to shovel out relief angle, owing to adopting the mode of manual back-off, reduce the accuracy of manufacture, have impact on hobboing cutter quality.A kind of economic Double enveloping hourglass worm gearing worm gear hob reliably of current shortage.
Summary of the invention
The object of the present invention is to provide the inserted indexable worm gear hob of a kind of Double enveloping hourglass worm gearing, this worm gear hob is easily manufactured, and economical reliable, machining accuracy is high, long service life.
The object of the invention is to adopt following technical scheme to realize: the inserted indexable worm gear hob of a kind of Double enveloping hourglass worm gearing, comprise cutter hub, described cutter hub perimembranous evenly offers some row's straight troughs vertically, described each straight trough is inserted with strip edge bearing vertically, in the middle of described strip edge bearing, low two ends are high to adapt with described cutter hub peripheral shape, described strip edge bearing is processed with several for locating the groove of indexable insert tip, throw away tip, described groove is inserted with dismountable indexable insert tip, throw away tip.
The invention has the beneficial effects as follows that to overcome prior art midplane twice-enveloping enveloping worm hob manufacturing cost high, manufacture difficulty, the problem of accuracy of manufacture difference, adopt indexable insert tip, throw away tip, easily manufactured, economical reliable, machining accuracy is high, indexable insert tip, throw away tip adopts carbide alloy manufacture, improves cutting rate, extends cutter life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of indexable insert tip, throw away tip in the embodiment of the present invention.
Fig. 3 is the structural representation of strip edge bearing in the embodiment of the present invention.
Fig. 4 is the structural representation of cutter hub in the embodiment of the present invention.
Fig. 5 is the structural representation of end cap in the embodiment of the present invention.
In figure, 1, head bolts, 2, end cap, 3, cutter hub, 4, strip edge bearing, 5, indexable insert tip, throw away tip, 6, soket head cap screw, 7, nut, 8, plain washer, 9, spring washer, 10, minor flank, 11, transitional region, 12, land, 13, curved edge.
Detailed description of the invention
The inserted indexable worm gear hob of Double enveloping hourglass worm gearing of the present invention, as shown in Figure 1, comprise cutter hub 3, described cutter hub 3 perimembranous evenly offers some row's straight troughs vertically, described each straight trough is inserted with strip edge bearing 4 vertically, in the middle of described strip edge bearing 4, low two ends are high to adapt with described cutter hub 3 peripheral shape, described strip edge bearing 4 being processed with several for locating the groove of indexable insert tip, throw away tip 5, described groove being inserted with dismountable indexable insert tip, throw away tip 5.
Indexable insert tip, throw away tip 5 is cutting tips of worm gear hob, the top and the bottom of described indexable insert tip, throw away tip 5 about Central Symmetry, to realize indexable function; Described indexable insert tip, throw away tip 5 comprises the rake face of class rhombus, four minor flanks 10 being located at the left and right sides, rake face upper and lower part and the rear end face of locating in cutter hub circumference for blade; Because minor flank 10 is locating surfaces, described minor flank 10 is plane, to adapt with the groove side being all plane, realize the location of blade along cutter hub axis, described rake face comprises four curved edges 13, is provided with land 12, also will has relief angle δ simultaneously after described curved edge 13, another side relative with curved edge 13 on described land 12 is not straight line, therefore forms one section of non-wide transitional region 11 between land 12 and minor flank 10.
Described strip edge bearing forms the first spacer for locating described indexable insert tip, throw away tip in cutter hub circumference at each groove side, described cutter hub perimembranous also forms the second spacer for locating described indexable insert tip, throw away tip and the first spacer in the circumferential at each straight trough side, shape and the described indexable insert tip, throw away tip shaped upper part of described first spacer and the second spacer adapt, and described indexable insert tip, throw away tip, the first spacer are connected through threaded fastener with the middle part of the second spacer.
In the middle part of the rake face of described indexable insert tip, throw away tip, in the middle part of the rear end face of described cutter hub second spacer, all offer shoulder hole, the connection of described indexable insert tip, throw away tip, the first spacer and the second spacer adopts soket head cap screw to penetrate from the rear end face of the second spacer, at the rake face fastening nuts of indexable insert tip, throw away tip.
The axial two ends of described cutter hub are provided with the end cap for cutter hub described in axial location and strip edge bearing, and described end cap is connected with described cutter hub through threaded fastener.
Described indexable insert tip, throw away tip has indexable function, and each indexable insert tip, throw away tip adopts PM technique manufacture on its three-dimensional entity model basis.
Described groove stage casing also offers some square grooves for holding described indexable insert tip, throw away tip lower end protuberance.
Below in conjunction with accompanying drawing, the invention will be further described.
The present invention adopts inserted tooth type, but be different from the inserted worm gear hob of existing Double enveloping hourglass worm gearing, each cutter tooth that the present invention inlays has indexable function, and each cutter tooth can, according to respective three-dimensional entity model, adopt PM technique to manufacture separately.
Fig. 1 is the structure composition diagram of the embodiment of the present invention, and it is by cutter hub 3, strip edge bearing 4, indexable insert tip, throw away tip 5, end cap 2, head bolts 1, screw 6, nut 7, and plain washer 8 and spring washer 9 form.Cutter hub 3 has six row's straight troughs, strip edge bearing 4 is contained in groove, two ends have end cap 2 strip edge bearing 4 and cutter hub 3 to be compressed, and strip edge bearing 4 is processed with the groove of location indexable insert tip, throw away tip 5, cutter hub 3, strip edge bearing 4 and indexable insert tip, throw away tip 5 are locked by screw 6.
Fig. 2 is the structural representation of indexable insert tip, throw away tip.Indexable insert tip, throw away tip of the present invention adopts PM technique to manufacture on the basis of its three-dimensional entity model, after loading onto cutter hub, then need not carry out sharpening by the mode meeting its forming principle on the special purpose machine tool of processing enveloping worm.Indexable insert tip, throw away tip adopts Hardmetal materials manufacture.Indexable insert tip, throw away tip is the cutting tip of worm gear hob, and at cutting edge, place leaves land, also will have relief angle simultaneously.Because two minor flanks of indexable insert tip, throw away tip are locating surfaces, need plane be made, and the cutting edge of indexable insert tip, throw away tip not straight line, therefore one section of non-wide transitional region between cutting edge and minor flank, can be formed.The rear end face of indexable insert tip, throw away tip is also locating surface, this ensures that theres the location completely of indexable insert tip, throw away tip.The cutting edge up and down of indexable insert tip, throw away tip, about central point, ensure that its indexable function.Central spot outputs shoulder hole, adopts screw-nut locking.
Fig. 3 is the structural representation of strip edge bearing.Strip edge bearing has the effect of location indexable insert tip, throw away tip, also has the effect protecting cutter hub during tipping.Due to the structural anchor ring characteristic of Double enveloping hourglass worm gearing worm gear hob, strip edge bearing two ends are high, middle low.Strip edge bearing has locating surface, and corresponding with the locating surface on indexable insert tip, throw away tip, for preventing interfering, make location reliable, the intersection place of locating surface and bottom surface will output groove, and the place that two locating surfaces intersect also needs to reserve the space of stepping down.Strip edge bearing there is through hole, passes through for screw.The step at strip edge bearing two ends can allow end cap itself and cutter hub be compressed.The processing of strip edge bearing will complete on the machining center of four axles when having three-dimensional entity model.
Fig. 4 is the structural representation of cutter hub.Cutter hub has six row's straight troughs, strip edge bearing is loaded in groove.The location of strip edge bearing on cutter hub is the bottom surface and the rear end face that lean on straight trough, after end cap is loaded onto at cutter hub two ends, can ensure the axial location of strip edge bearing.Straight trough has the square groove that some spacing do not wait, this is because cutter hub will there be the hole of wearing knife bar, it is too dark that straight trough can not be opened, which limits the radial dimension of strip edge bearing, make strip edge bearing can not hold the indexable insert tip, throw away tip of middle several cutter tooth completely, for preventing cutter hub from interfering with outstanding indexable insert tip, throw away tip, therefore output corresponding side's groove, to hold the ledge of indexable insert tip, throw away tip.Indexable insert tip, throw away tip, the connection of strip edge bearing and cutter hub adopts soket head cap screw, and penetrates from back to front, locks nut at the rake face place of indexable insert tip, throw away tip.Wear from back to front can avoid screw and another arrange cutter interference of tooth, select soket head cap screw and be because the turret head size of bolt is larger without hexagon-headed bolt, in the process of machining worm wheel can and fresh processed worm gear flank interference, soket head cap screw and adopt the form of countersunk head can effectively avoid this situation.Packing ring below nut is plain washer and spring washer from the bottom up successively, and plain washer can increase the lifting surface area of indexable insert tip, throw away tip, and spring washer has locking effect.Cutter hub can process cutter tooth on the special purpose machine tool of processing enveloping worm, and then adopt Linear cut, vertical milling, the processing methods such as drilling process remaining feature, also can process in the heart by work in-process.
Fig. 5 is the structural representation of end cap.The effect of end cap is pressed on cutter hub by strip edge bearing, and also have the effect of axial direction location strip edge bearing, end cap is locked by screw and cutter hub simultaneously.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (6)
1. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing, comprise cutter hub, it is characterized in that: described cutter hub perimembranous evenly offers some row's straight troughs vertically, described each straight trough is inserted with strip edge bearing vertically, in the middle of described strip edge bearing, low two ends are high to adapt with described cutter hub peripheral shape, described strip edge bearing is processed with several for locating the groove of indexable insert tip, throw away tip, described groove is inserted with dismountable indexable insert tip, throw away tip;
Indexable insert tip, throw away tip is the cutting tip of worm gear hob, the top and the bottom of described indexable insert tip, throw away tip about Central Symmetry, to realize indexable function; Described indexable insert tip, throw away tip comprises the rake face of class rhombus, four minor flanks being located at the left and right sides, rake face upper and lower part and the rear end face of locating in cutter hub circumference for blade; Described minor flank is plane, to adapt with the groove side being all plane, realize the location of blade along cutter hub axis, described rake face comprises four curved edges, be provided with land after described curved edge, between described land and minor flank, form one section of non-wide transitional region.
2. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing according to claim 1, it is characterized in that: described strip edge bearing forms the first spacer for locating described indexable insert tip, throw away tip in cutter hub circumference at each groove side, described cutter hub perimembranous also forms the second spacer for locating described indexable insert tip, throw away tip and the first spacer in the circumferential at each straight trough side, shape and the described indexable insert tip, throw away tip shaped upper part of described first spacer and the second spacer adapt, described indexable insert tip, throw away tip, first spacer is connected through threaded fastener with the middle part of the second spacer.
3. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing according to claim 2, it is characterized in that: in the middle part of the rake face of described indexable insert tip, throw away tip, in the middle part of the rear end face of described cutter hub second spacer, all offer shoulder hole, the connection of described indexable insert tip, throw away tip, the first spacer and the second spacer adopts soket head cap screw to penetrate from the rear end face of the second spacer, at the rake face fastening nuts of indexable insert tip, throw away tip.
4. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing according to claim 1, it is characterized in that: the axial two ends of described cutter hub are provided with the end cap for cutter hub described in axial location and strip edge bearing, and described end cap is connected with described cutter hub through threaded fastener.
5. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing according to claim 1, it is characterized in that: described indexable insert tip, throw away tip has indexable function, each indexable insert tip, throw away tip adopts PM technique manufacture on its three-dimensional entity model basis.
6. the inserted indexable worm gear hob of Double enveloping hourglass worm gearing according to claim 1, is characterized in that: described groove stage casing also offers some square grooves for holding described indexable insert tip, throw away tip lower end protuberance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033278.4A CN103071864B (en) | 2013-01-29 | 2013-01-29 | Toothed indexable worm gear hob for planar secondary enveloping worm drive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033278.4A CN103071864B (en) | 2013-01-29 | 2013-01-29 | Toothed indexable worm gear hob for planar secondary enveloping worm drive |
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| Publication Number | Publication Date |
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| CN103071864A CN103071864A (en) | 2013-05-01 |
| CN103071864B true CN103071864B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310033278.4A Active CN103071864B (en) | 2013-01-29 | 2013-01-29 | Toothed indexable worm gear hob for planar secondary enveloping worm drive |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6565399B2 (en) * | 2015-07-09 | 2019-08-28 | 株式会社ジェイテクト | Gear processing equipment |
| EP3263263B1 (en) | 2016-06-30 | 2019-01-23 | Seco Tools Ab | Hobbing tool with replaceable cutting inserts |
| CN108971887B (en) * | 2018-07-25 | 2023-09-29 | 宁夏天地奔牛实业集团有限公司 | Device and method for quickly mounting cutter head of inserted hob |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144622A (en) * | 1981-03-04 | 1982-09-07 | Toyoyama Akira | Scale type assembled worm hob |
| CN2288807Y (en) * | 1995-07-28 | 1998-08-26 | 张长启 | Plane secondary enveloping ring surface worm gear worm-gear hob |
| SE531858C2 (en) * | 2007-12-21 | 2009-08-25 | Sandvik Intellectual Property | Milling tools for chip separating machining, as well as cutting body and basic body for this |
| CN201267905Y (en) * | 2007-12-29 | 2009-07-08 | 山东省德州市金宇机械有限公司 | Planar secondary enveloping ring surface worm gear hob |
| DE102009019394A1 (en) * | 2009-04-29 | 2010-11-04 | Eckardt, Edmund, Dipl.-Ing. | Roller cutter comprises cylindrical base body, where hard metal reversible plates are inserted at periphery of base body, and are provided in comb-shaped multiple cogging with right and left flank cutting |
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