CN203751405U - Half-round concave milling cutter for processing large arcs - Google Patents

Half-round concave milling cutter for processing large arcs Download PDF

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Publication number
CN203751405U
CN203751405U CN201320786225.5U CN201320786225U CN203751405U CN 203751405 U CN203751405 U CN 203751405U CN 201320786225 U CN201320786225 U CN 201320786225U CN 203751405 U CN203751405 U CN 203751405U
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China
Prior art keywords
milling cutter
arc
tooth
cutter body
round concave
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Active
Application number
CN201320786225.5U
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Chinese (zh)
Inventor
乔奇光
寇娟利
张勇
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Xi'an North Electro-Optic Technology Defense Co Ltd
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Xi'an North Electro-Optic Technology Defense Co Ltd
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Abstract

The utility model relates to a half-round concave milling cutter for processing large arcs. The half-round concave milling cutter at least comprises a half-round concave milling cutter body (1), wherein an arc radius R of an arc milling cutter body is 65mm; a cutter width w of the arc milling cutter body is 72mm; a diameter D of the arc milling cutter body is Phi 100mm; the half-round concave milling cutter is characterized in that the half-round concave milling cutter body (1) consists of ten angle tooth grooves equally according to the arc; an included angle theta between the tooth grooves is 45 degrees; dropping amount (4) of the back of the tooth is 6mm; a first relief angle (2) is 23 degrees; a second relief angle (3) is 5 degrees. The half-round concave milling cutter is low in processing cost, simple and convenient to operate and suitable for designing and processing the structures of shovel tooth milling cutters of deep tooth grooves.

Description

A kind of for processing the concave milling cutter compared with orthodrome
Technical field
The utility model relates to a kind of machining milling cutter, particularly a kind of for processing the concave milling cutter compared with orthodrome.
Background technology
In machining, be the curved surface of dome arc for part outline, if process with numerical control machining center, neither business efficiency is also low, and traditional processing method is used concave milling cutter milling exactly, processes simple, economically, and efficiency is also high.Concave milling cutter is the one of teeth profile milling cutter, its teeth groove back along shape by backing-off cutting and grinding after angular curve (conventionally adopting Archimedes spiral) shape ensure slippage, teeth groove lip surface after use repeatedly reconditioning ensure shape and cutting edge sharp.But the concave milling cutter maximum specification of instrument manufacturer's standard is to R20.Therefore milling need be made concave milling cutter by oneself compared with orthodrome part, at this just taking R65 concave arc as example.Due to part type face width, arc radius is large, and this concave milling cutter design is all different with standard concave milling cutter with processing.Common standard concave milling cutter arc radius is less, and its milling cutter gullet depth is sufficiently more than the arc action of projection on lip surface.Because this milling cutter arc radius is larger, profile wide (being exactly that cutter hub is thick at this) is cut face length in the time of cutting, and output in metal removal is large, this holds bits in the middle of not only in the time that milling cutter uses too much affects surface accuracy, also makes milling cutter process relief grinding profile of tooth emery wheel withdrawing insufficient space and brings difficulty to tool sharpening.
Summary of the invention
The purpose of this utility model is to provide one and has low cost of manufacture; Simple to operate, that service efficiency is high is a kind of for processing the concave milling cutter compared with orthodrome.
The purpose of this utility model is to realize like this, for processing the concave milling cutter compared with orthodrome, at least comprise: concave milling cutter body, wherein, the arc radius R of arc cutter body is 65mm, the wide w of cutter of arc cutter body is 72 mm, and the diameter D of arc cutter body is φ 100mm, it is characterized in that: concave milling cutter body is divided equally and formed by circular arc by ten angle teeth groove, wherein teeth groove angle theta is 45 °, back of tooth slippage is at 6mm, and the first relief angle is got 23 °, and the second relief angle is got 5 °.
There is dustpan shape step groove the position, bottom-valley, center of described arc radius R.
Advantage of the present utility model: the utility model adopts self-control compared with orthodrome concave milling cutter, and improve tooth slot structure shape in the design of milling cutter and processing, select larger teeth groove angle theta, for the feature of orthodrome and wide profile, in the time of cutter roughing, adopt back of tooth backing-off cutting two relief angles in profile both sides are increased to rear portion slippage, middle to profile is that circular arc bottom point back of tooth root mills out a dustpan shape step.From technique ensured milling cutter quench after emery wheel relief grinding cutter tooth circular shape and the back of tooth slippage K when fine finishining.Use from milling cutter the chip space that has increased teeth groove middle part.Wide profile circular arc part processing milling on conventional equipment is achieved, and has ensured stock-removing efficiency and crudy.Processing cost is low, and operation simple and convenient is applicable to structural design and the processing of darker teeth groove backed-off milling cutter simultaneously.
Brief description of the drawings
Below in conjunction with embodiment accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is concave milling cutter back of tooth dustpan shape step schematic diagram.
In figure, 1, concave milling cutter body; 2, the first relief angle; 3, the second relief angle; 4, back of tooth slippage; 5, dustpan shape step groove; 6, gullet depth; 7, teeth groove angle; 8, back of tooth arc length; 9, the position, bottom-valley, center of arc radius R.
Detailed description of the invention
As shown in Figure 1, a kind of for processing the concave milling cutter compared with orthodrome, at least comprise: concave milling cutter body 1, wherein, the arc radius R65mm of arc cutter body, the wide w(of cutter of arc cutter body is that cutter is thick) 72 mm, because processing parts shape is limit, the diameter D of arc cutter body is φ 100mm.
As shown in Figure 2, provide the end view drawing of concave milling cutter body 1, concave milling cutter body 1 is divided equally and is formed by circular arc by ten angle teeth groove, and wherein teeth groove angle theta is normally between 30 ~ 40 °, and for shortening back of tooth arc length 8, the θ angle of teeth groove angle 7 is increased to 45 °.For the normal value that ensures back of tooth slippage 4 is at 6mm, make processing technology reasonable, adopt two relief angles processing, the first relief angle 2 is got 23 °, and the second relief angle 3 is got 5 °.
As seen from Figure 2, when the θ that adopts increasing teeth groove angle 7 is 45 °, ensure that the normal value of back of tooth slippage 4 is at 6mm simultaneously, make processing technology reasonable, the first relief angle 1 is got 23 °, the second relief angle 2 is got after 5 °, and solve one and approached the larger chip removal space of guarantee, milling cutter end at circular arc two ends, the 2nd, make back of tooth leading portion emery wheel relief grinding have enough withdrawing amounts and be unlikely to collide next tooth.
But at circular arc bottom point, in Fig. 1, the position, bottom-valley, center 9 of arc radius R almost arrives teeth groove root, so not only bits cannot be effectively held in the cutting of circular arc middle part, also make spade and the normally withdrawing of relief grinding of the back of tooth.All can have influence on cutter tooth intensity if further strengthen the θ of teeth groove angle 7 or deepen gullet depth 6, and the cutting of wide profile makes cutter tooth stressed very large.In the middle of per tooth back of tooth root, the position, bottom-valley, center 9 of arc radius R mills out a dustpan shape step groove 5, sees (Fig. 2) for this reason.Can ensure the withdrawing on abrasive wheel grinding wheel arc summit, the chip space of middle part can increase again milling cutter use time, and little to cutter tooth intensity effect.
Be that utility model designs and produces concave milling cutter according to processing parts profile width dimensions and arc radius, in the time of milling cutter processing teeth groove, just suitably strengthen teeth groove angle (notch is increased and be beneficial to chip removal); In addition the back of tooth is adopted to two relief angles, can make the roughing before quenching of back of tooth rear portion strengthen slippage by backing-off cutting; Then in the middle of the back of tooth root of per tooth, (arc end point) position mills out a dustpan shape step, can ensure the withdrawing of point at the bottom of abrasive wheel grinding wheel arc herein, the chip space of middle part can increase again milling cutter and use time.It is characterized in that: while reducing the rear fine finishining of milling cutter quenching, the back of tooth needs the arc length of relief grinding face, particularly arc circular arc bottom point place arc length, the withdrawing stroke of per tooth grinding while ensureing milling cutter circular shape relief grinding, can ensure that so normal grinding reaches the circular shape flank of tooth of degree of precision, and then wide profile middle part there are enough chip spaces while ensureing that milling cutter uses.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.

Claims (1)

1. one kind for processing the concave milling cutter compared with orthodrome, at least comprise: concave milling cutter body (1), wherein, the arc radius R of arc cutter body is 65mm, and the wide w of cutter of arc cutter body is 72 mm, the diameter D of arc cutter body is φ 100mm, it is characterized in that: concave milling cutter body (1) is divided equally and formed by circular arc by ten angle teeth groove, wherein teeth groove angle theta is 45 °, and back of tooth slippage (4) is at 6mm, the first relief angle (2) is got 23 °, and the second relief angle (3) is got 5 °; There is dustpan shape step groove (5) position, bottom-valley, center (9) of described arc radius R.
CN201320786225.5U 2013-12-04 2013-12-04 Half-round concave milling cutter for processing large arcs Active CN203751405U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320786225.5U CN203751405U (en) 2013-12-04 2013-12-04 Half-round concave milling cutter for processing large arcs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320786225.5U CN203751405U (en) 2013-12-04 2013-12-04 Half-round concave milling cutter for processing large arcs

Publications (1)

Publication Number Publication Date
CN203751405U true CN203751405U (en) 2014-08-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320786225.5U Active CN203751405U (en) 2013-12-04 2013-12-04 Half-round concave milling cutter for processing large arcs

Country Status (1)

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CN (1) CN203751405U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171086A (en) * 2015-10-15 2015-12-23 国营第六一六厂 Forming cutter for milling non-continuous circular arc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171086A (en) * 2015-10-15 2015-12-23 国营第六一六厂 Forming cutter for milling non-continuous circular arc

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