CN206536040U - A kind of cutter for being used to process γ groove frame rings - Google Patents

Abstract

The utility model provides a kind of cutter for being used to process γ groove frame rings, including semifinishing tool matrix and broach shell body, the semifinishing tool matrix is in strip square column structure, one end of semifinishing tool matrix provided with sectional dimension change and with semifinishing tool matrix be in angle kink, the kink includes the first corner part, the second corner part and flat part, second corner part is less than the first corner part and acute angle folded by flat part with acute angle folded by flat part, and the cutter head for cutting is provided with kink end；Screwed in using bolt part in knife bar fixing hole and hold out against knife bar in knife bar groove；Process tool described in the utility model improves integral rigidity enhancing, it is to avoid the cutter abrupt change of cross-section weakens excessive to integral rigidity, and avoids in processing interfering with part；Broach shell can play a protective role to cutter hub clamping position, prevent cutter hub during Reusability because of fail in compression, so that tool life.

Description

A kind of cutter for being used to process γ groove frame rings

Technical field

The utility model belongs to thin-walled parts machining technology field, is used to process γ groove frame rings more particularly, to one kind Cutter.

Background technology

γ groove frame rings are the important composition parts of carrier rocket tank, because accessory size is big, wall thickness is small, nonuniform section Structure, belongs to large-scale weak rigid thin-walls.Because structural walls are thin, groove depth, precision high, there is larger technical difficulty in processing, There is yielding, poor rigidity, the easily processing such as vibration problem；Meanwhile, existing cutter lacks protection structure so that cutter is integrally firm Property and durability reduction.

Utility model content

In view of this, the utility model is directed to a kind of cutter for being used to process γ groove frame rings, passes through the utility model Poor rigidity that existing bite is present can be solved, the problem of service life is short..

To reach above-mentioned purpose, what the technical solution of the utility model was realized in：

A kind of cutter for being used to process γ groove frame rings, specifically, the cutter of profiling layer scan method includes semifinishing cutter base Body and broach shell body, the semifinishing tool matrix are in strip square column structure, are provided with one end of semifinishing tool matrix Sectional dimension change and the kink that with semifinishing tool matrix is in angle, the kink includes the first corner part, the Two corner parts and flat part, first corner part are avoided according to part γ groove shapes cutter hub to groove curved surface area, described Second corner part is avoided that cutter section diminishes suddenly, and strength reduction is excessive, thus set the second corner part with it is sharp folded by flat part Angle is less than the first corner part and acute angle folded by flat part, and the first corner part and acute angle folded by flat part preferably are 30 °, and second turns Corner is 15 ° with acute angle folded by flat part, the cutter head for cutting is provided with kink end, the cutter head is using the side welded Formula is fixed on kink end；Wherein, an inclined end face is cut into the end of the flat part, after flat part end is formed slopely Preferably 20 ° of angle number, can be prevented effectively from processing and interfere with part；Specifically, the fixing end of the semifinishing tool matrix The knife bar of strip flat column is installed with, the knife bar is embedded in broach shell body, the broach shell body is provided with strip knife bar groove, For intercalation knife bar, knife bar fixing hole is also provided with the broach shell body, screws in knife bar fixing hole and holds out against using bolt part Knife bar is in knife bar groove；The stepped transition of broach shell body, not only facilitates the making of broach shell body to process, moreover it is possible to facilitate knife The secured adjusted of bar；Also solve material usage simultaneously；The broach shell body mainly uses broach shell to be led to according to cutting situation Overregulate position of the knife bar in knife bar groove, the final cantilevered length of regulation cutter, because converted products is thin-walled parts, easily with Cutter produces resonance, while the intrinsic frequency of different wall specification product is different, when vibrating violent in working angles, by adjusting Section Mold processing avoids the resonance zone of cutter and part, mitigates cutting and trembles；Knife bar is final in order to which copying turning is lengthened The cantilevered length of cutter need to can be achieved by adjusting position of the knife bar in broach shell；

A kind of large diameter aluminium alloy nonuniform section frame ring accurate processing method, major processing steps are：

S1, large diameter aluminium alloy nonuniform section frame ring is pressed on clamping device from top to bottom, frame ring and dress The mold of clamp device coordinates for cylinder；Wherein, the clamping device is mainly made up of pedestal and eight pieces of inner mold tires, cylindrical in base And mold at the top of respectively leave some groups of mounting holes be used for install compression pressing plate and bolt；

S2, compress at the top of mold and to compress frame rings by inner side several long pressing plates that overhang out, processing frame ring is cylindrical；

S3, long pressing plate is pulled down, several top boards and outer plate are compressed at the top of mold；Set some small in outer round bottom portion Pressing plate, framing mask ring is moved radially；Detect clamping device and frame ring fit clearance and form and position tolerance；

S4, the γ grooves processed using layer blanking method in frame ring, process are mainly comprised the following steps：Roughing, semifinishing, Finishing；Complete the accurate processing of frame ring.

Further, clamping device uses inner bearing type structure, is mainly made up of pedestal and eight pieces of inner mold tires, by pedestal The upper sagging structure design of increase positioning so that eight pieces of inner mold tires can be diametrically accurately positioned, and inner mold tire is connected through a screw thread Onto pedestal, complete Set and Positioning, base is cylindrical and mold at the top of respectively leave some groups of mounting holes be used for install compression pressure Plate and bolt, preferably 120 groups mounting holes improve the stability of frame ring；

Further, the frictional force that cylinder coordinates is larger, is not influenceing inner mold fetalism face diameter on the premise of spacing, inside Type fetalism face three annular grooves of straightway Position Design, to reduce contact area during cooperation so as to reduce resistance, solve frame ring Part is the problem of assembling resistance is big during assembling inner mold tire and unloading inner mold tire；

Further, it is unsatisfactory for coordinating desired situation for being likely to occur shape face size in frame ring in processing, passes through The oblong slots being parallel to each other are designed on eight pieces of inner mold tire bottom surfaces so that frock has adjustment surplus in diametric(al), works as frame It when the interior molded dimension of ring changes, may insure mold being displaced outwardly by oval slot structure, frock external surface stayed Go out corresponding allowance, adaptive trim then is carried out to frock type face, new frock is met the clamping demand of current part；

Further, the outer bowlder of processing frame ring, compresses 32 long pressing plates at the top of mold；When processing γ grooves, tire Tool top is pressed on cylindrical compress of base and compresses 60 top boards at the top of 60 small pressing plates, interior shape；

Further, the roughing, using stepped layer blanking method；Because roughing material removal amount is big, γ groove depths 144mm, in order to improve the structural strength and durability of cutter, increase cutter structure cutter hub thickness and width, improves cutter Integral rigidity, to meet the requirement of the big cutting of roughing, a width of 15mm of tool blade, compared to conventional 10mm treads, can be lifted effectively Processing efficiency；Illustrate shown in Fig. 9 for the vertical A and γ grooves transverse direction B of γ grooves roughing direction；

Further, the semifinishing, using profiling layer blanking method, because the depth of γ grooves is larger, design cutter exists Corner location is with 15 ° of gradient gentle transitions so that cutter hub integral rigidity strengthens, it is to avoid the cutter abrupt change of cross-section weakens to integral rigidity Excessively；Design 20 ° of relief angle a of cutter, it is to avoid interfere in processing with part；

Further, the finishing, the machining accuracy in processing for guarantee γ grooves, single turning distance, one Tool wear is very fast in secondary finishing；There is mechanical clamped cutting tool blade to repeat assembly precision height, and the advantages of dimensional uniformity is good is adapted to As final finishing tool；Design, cutter hub relative stiffness is weak, be not suitable for large-scale for horizontal lathe more than standard mechanical clamped cutting tool Vertical lathe is used；For protection cutter, cutter integral rigidity and durability are improved, mechanical clamped cutting tool broach shell is designed；Broach shell can have Effect parcel cutter hub rear end clamping position, to reduce cutter thin bar cantilevered length；Broach shell can play protection to cutter hub clamping position Effect, prevents cutter hub during Reusability because of fail in compression, so that tool life；

Further, it is the machining accuracy for ensureing γ grooves when finishing cutter track is finishing, it is to avoid processing pauses what is caused The defects such as knife are connect, using the processing of single program one-pass in place；Because γ grooves are the deep cavity configuration of bottom lock, chip in processing Being deposited in bottom land can not exclude, and facade stays less allowance before finishing, and cambered surface stays more allowance, add for convenience Work, using facade as base point for checking cutting tool, from top to bottom, because allowance is smaller, elevation is smaller, cuts for cutter track in facade processing Bits accumulation is less, and processing will not be impacted；From down to up, the chip of generation falls to groove to cambered surface cutter track under the influence of gravity Bottom, because cutter is constantly up moved, chip accumulation will not be impacted to processing；

Further, roughing feeding speed is cut wide between 5~15mm between 2.5~6.5mm/min；

Further, roughing feeding speed is 4.5, cuts a width of 15mm；

Further, the clamping of the large diameter aluminium alloy nonuniform section frame shaped part is using flexible support and takes electricity The direct stretching of mode of dynamic or hydraulic pressure support；

Relative to prior art, process tool described in the utility model has the advantage that：

The integral rigidity enhancing of profiling layer blanking method, wherein cutter that semifinishing described in the utility model is used, keeps away Exempt from the cutter abrupt change of cross-section and integral rigidity is weakened excessive, and avoid in processing interfering with part；

Broach shell in finishing described in the utility model can play a protective role to cutter hub clamping position, prevent cutter hub Because of fail in compression during Reusability, so that tool life.

Brief description of the drawings

Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model. In accompanying drawing：

Fig. 1 is the γ slot structure part truncation surface schematic diagrames described in the utility model embodiment；

Fig. 2 is the inner mold tire overall schematic of the clamping device described in the utility model embodiment；

Fig. 3 is the inner mold tire partial schematic diagram of the clamping device described in the utility model embodiment；

The clamping state end face signal of display outer plate when Fig. 4 is the processing γ grooves described in the utility model embodiment Figure；

The clamping state end face signal of the small pressing plate of display when Fig. 5 is the processing γ grooves described in the utility model embodiment Figure；

Fig. 6 is the processing γ grooves fashionable dress folder view described in the utility model embodiment；

Fig. 7 is the clamping state end view of the outer bowlder of processing frame ring described in the utility model embodiment；

Fig. 8 is the clamping state of the outer bowlder of processing frame ring described in the utility model embodiment；

Fig. 9 is the γ grooves transverse direction and vertical schematic diagram that the stepped layer described in the utility model embodiment is cut；

Cutter track when Figure 10 is the processing γ grooves described in the utility model embodiment；

Figure 11 a are the roughing tool front view described in the utility model embodiment；

Figure 11 b are the roughing tool cross-sectional end view described in the utility model embodiment；

Figure 12 is that the interior fetalism described in the utility model embodiment faces place's schematic diagram directly；

Figure 13 a are the profiling layer cutter front view described in the utility model embodiment；

Figure 13 b are the profiling layer cutter top view described in the utility model embodiment；

Figure 14 is the profiling layer scan method schematic diagram described in the utility model embodiment；

Figure 15 a are the profiling layer cutter sleeve schematic diagram described in the utility model embodiment；

Figure 15 b are the profiling for the being inserted with knife bar layer cutter sleeve schematic diagram described in the utility model embodiment.

Description of reference numerals：

10- γ grooves；11- frame rings；20- inner mold tires；21- annular grooves；31- semifinishing tool matrix；The turnings of 32- first Portion；The corner parts of 33- second；34- flat parts；35- cutter heads；A- relief angles；40- knife bar grooves；41- broach shell bodies；42- knife bars are fixed Hole；43- knife bars；51- top boards；The small pressing plates of 52-；53- outer plates；The long pressing plates of 61-；1- facade cutter tracks；2- cambered surface cutter tracks；A- γ grooves are vertical；B- γ grooves are horizontal；71- roughing layer cutting knife body；72- cutter hub fixed blocks；711- arc gaps；712- blades are embedding Groove；The knuckle of 713- cutter hubs second；714- cutter hub First Transition fillets.

Embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can To be mutually combined.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ", The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that For to limitation of the present utility model.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning of the term in the utility model.

Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

A kind of large diameter aluminium alloy nonuniform section frame ring accurate processing method, major processing steps are：

S1, large diameter aluminium alloy nonuniform section frame ring 11 is pressed on clamping device from top to bottom, frame ring 11 Coordinate with the mold of clamping device for cylinder；Wherein, the clamping device is mainly made up of pedestal and eight pieces of inner mold tires 20, the bottom of at Respectively left at the top of the cylindrical and mold of seat some groups of mounting holes be used for install compression pressing plate and bolt；

S2, compress at the top of mold and to be overhang out several long compressing components of pressing plate 61 by inner side, processing frame ring 11 is cylindrical；

S3, long pressing plate 61 is pulled down, several top boards 51 and outer plate 53 are compressed at the top of mold；Set in outer round bottom portion Some small pressing plates 52, limit feature is moved radially；Detect clamping device and part fit clearance and form and position tolerance；

S4, the γ grooves 10 processed using layer blanking method on part, wherein Fig. 1 are the schematic cross-section of γ grooves 10, part work Process is mainly comprised the following steps：Roughing, semifinishing, finishing；Complete the accurate processing of frame ring 11.

With reference to shown in Fig. 2-8, wherein, clamping device uses inner bearing type structure, mainly by pedestal and eight pieces of 20 groups of inner mold tires Into by increasing the sagging design of positioning on pedestal so that eight pieces of inner mold tires 20 can be diametrically accurately positioned, inner mold tire 20 Be threadedly attached on pedestal, complete Set and Positioning, base is cylindrical and mold at the top of respectively leave some groups of mounting holes and be used for The pressing plate and bolt compressed is installed, preferably 120 groups mounting holes improve the stability of part；

As shown in figure 12, wherein, cylinder coordinate frictional force it is larger, do not influenceing mold type face diameter to spacing premise Under, in mold type face three annular grooves 21 of straightway Position Design, to reduce contact area during cooperation so as to reduce resistance, solve Part is the problem of assembling resistance is big during filling tire and unloading tire；

Wherein, it is unsatisfactory for coordinating desired situation for being likely to occur shape face size in part in processing, by eight pieces Designed on the bottom surface of inner mold tire 20 in the oblong slots being parallel to each other, figure and do not indicate oblong slots；So that frock exists in diametric(al) Surplus is adjusted, when the interior molded dimension of part changes, may insure mold being displaced outwardly by oval slot structure, to work Dress external surface reserves corresponding allowance, then carries out adaptive trim to frock type face, new frock is met current part Clamping demand；

Wherein, the outer bowlder of processing frame ring 11, compresses 32 long pressing plate 61 at the top of mold；When processing γ grooves 10, Cylindrical compress of base is pressed at the top of mold and compresses 60 top boards 51 at the top of 60 small pressing plate 52, interior shape；

Wherein, the roughing, using stepped layer blanking method；Because roughing material removal amount is big, the depth of γ grooves 10 144mm, γ grooves end section shape as shown in Figure 1, figure increases cutter structure knife to improve the structural strength and durability of cutter Body thickness and width, as shown in Figure 11 a, 11b, improve the integral rigidity of cutter, to meet the requirement of the big cutting of roughing, knife Tool tread is 15mm, compared to conventional 10mm treads, can effectively lift processing efficiency；

Specifically, as shown in Figure 11 a, 11b, the roughing tool includes roughing layer cutting knife body 71, the roughing The section of layer cutting knife body 71 has radian, and the tread of roughing layer cutting knife body 71 is preferably 15mm, in roughing layer cutting knife body It is that thick add is protruded from outside square cutter hub fixed block 72, and cutter hub fixed block 72 that one end Jiao Chu, which is connected with strip, section, on 71 Work layer cutting knife body 71, the cutter hub fixed block 72 facilitates knife rest to clamp roughing layer cutting knife body region；The roughing layer cutting knife The top of body 71 is also provided with circular lance 711, and the circular lance 711 can disperse roughing layer cutting knife body 71 in machined part Cutting stress, improves the structural strength of roughing layer cutting knife body 71；At another upper corners of the roughing layer cutting knife body 71 Provided with blade caulking groove 712, the blade caulking groove 712 is used for blade forward；Two lower ends angle of the cutter hub 71 is respectively circular arc Structure, the seamed edge of round and smooth cutter hub is the second knuckle of cutter hub 713, another circular arc in the inferior horn of the homonymy of cutter hub fixed block 72 Structure is cutter hub First Transition fillet 714；Second knuckle 713 is R=10mm, and the First Transition fillet 714 is R =40mm；

As shown in Figure 13 a, 13b, 14,15a, 15b, wherein, the semifinishing, using profiling layer blanking method, due to γ The depth of groove is larger, and design cutter is in corner location with 15 ° of gradient gentle transitions so that cutter hub integral rigidity strengthens, it is to avoid knife Have the abrupt change of cross-section to weaken excessively integral rigidity；Design 20 ° of relief angles of cutter, it is to avoid interfere in processing with part；

Wherein, the finishing, the machining accuracy in processing for guarantee γ grooves, single turning distance, once smart Tool wear is very fast in processing；It is high that there is mechanical clamped cutting tool blade to repeat assembly precision, the advantages of dimensional uniformity is good, be adapted to as Final finishing tool；Designed more than standard mechanical clamped cutting tool for horizontal lathe, cutter hub relative stiffness is weak, be not suitable for large-scale vertical Lathe is used；For protection cutter, cutter integral rigidity and durability are improved, mechanical clamped cutting tool broach shell is designed；Broach shell can be wrapped effectively Cutter hub rear end clamping position is wrapped up in, to reduce cutter thin bar cantilevered length；Broach shell can play a protective role to cutter hub clamping position, Prevent cutter hub during Reusability because of fail in compression, so that tool life.

A kind of cutter for being used to process γ groove frame rings, specifically, as Figure 13 a, 13b, 14 and Figure 15 a, 15b profiling layer are cut The cutter of method includes semifinishing tool matrix 31 and broach shell body 41, and the semifinishing tool matrix 31 is in strip square column knot Structure, one end of semifinishing tool matrix 31 provided with sectional dimension change and with semifinishing tool matrix 31 be in angle Kink, the kink include the first corner part 32, the second corner part 33 and flat part 34, first corner part 32 Groove curved surface area is avoided according to part γ groove shapes cutter hub, second corner part 33 is avoided that cutter section becomes suddenly Small, strength reduction is excessive, therefore sets the second corner part 33 to be less than the first corner part 32 and flat part with acute angle folded by flat part 34 Acute angle folded by 34, the first corner part 32 and acute angle folded by flat part 34 preferably are 30 °, the second corner part 33 and the institute of flat part 34 It is 15 ° to press from both sides acute angle, and the cutter head 35 for cutting is provided with kink end, and the cutter head 35 is fixed on by the way of welding Kink end；Wherein, an inclined end face is cut into the end of the flat part 34, as depicted in fig. 13 a, wherein flat part 34 End is formed slopely preferred a=20 ° of rear angle number, can be prevented effectively from processing and interfere with part；Specifically, the semifinishing The fixing end of tool matrix 31 is installed with the knife bar 43 of strip flat column, and the knife bar 43 is embedded in broach shell body 41, described Broach shell body 41 is provided with strip knife bar groove 40, and for intercalation knife bar 43, knife bar fixing hole is also provided with the broach shell body 41 42, screwed in using bolt part in knife bar fixing hole 42 and hold out against knife bar in knife bar groove 40；The broach shell body 41 is stepped Transition, not only facilitates the making of broach shell body 41 to process, moreover it is possible to facilitate the secured adjusted of knife bar；Material use is also solved simultaneously Amount；The broach shell body 41 mainly uses broach shell to be adjusted according to cutting situation, by adjusting position of the knife bar in knife bar groove The final cantilevered length of cutter is saved, because converted products is thin-walled parts, easily resonance is produced with cutter, while different wall specification The intrinsic frequency of product is different, and when vibrating violent in working angles, the resonance of cutter and part is avoided by adjusting Mold processing Region, mitigates cutting and trembles；

As shown in Figure 10, wherein, finishing cutter track be finishing when be ensure γ grooves machining accuracy, it is to avoid processing pause That causes connects the defects such as knife, using the processing of single program one-pass in place；Because γ grooves are the deep cavity configuration of bottom lock, processing Middle chip is deposited in bottom land and can not excluded, and facade stays less allowance before finishing, and cambered surface stays more allowance, is Convenient processing, using facade as base point for checking cutting tool, in facade processing cutter track from top to bottom, the direction as shown in Figure 10 neutral surfaces cutter track 1, Because allowance is smaller, elevation is smaller, and chip accumulation is less, and processing will not be impacted；Cambered surface cutter track is arrived by down On, as shown in cambered surface cutter track 2 in Figure 10, the chip of generation falls to bottom land under the influence of gravity, is moved up because cutter is constantly past Dynamic, chip accumulation will not be impacted to processing；

As shown in table 2, wherein, roughing feeding speed between 2.5~6.5mm/min, cut wide between 5~15mm；Its In, roughing feeding speed is 4.5, cuts a width of 15mm；

Wherein, the clamping of the large diameter aluminium alloy nonuniform section frame shaped part using flexible support and take it is electronic or The direct stretching of mode of hydraulic pressure support；

Need to detect fit clearance everywhere and form and position tolerance during frock use, main control parameters index is shown in Table 1, it is ensured that preferable circularity is to ensure wall thickness dimension：

Rough turn groove processing parameter is shown in Table 2, and the increase of feed speed is can be seen that to cutter from rough turn groove processing test parameters Cutting generates large effect, and getting over utility model with the lifting chattering of feed speed shows, and is only cutting the feelings of wide reduction Taken a turn for the better under condition.The machined parameters finally determined according to above-mentioned data are the data of sequence number 5：Speed (F)=4.5mm/min is fed, Cut width (ap)=15mm.Part is processed under this parameter, processes more steady, so that under cutter loss, use time is long, processing effect Rate is higher；

The utility model proposes based on rigidity reinforcing major diameter frame ring binder method, particularly based on type face mould intend Stretching precision clamping device in the modularization of 5m γ groove frame rings, solves that clamping is difficult, inner mold face patch tyre uniformity is poor, circularity change The uneven problem of the caused cutting of the problems such as shape is big, making part, circularity ensures within 0.2mm in process, realizes 5m straight The reliable clamping of footpath γ groove frame rings；

The accurate difficult processing that processing method of the present utility model solves γ grooves obtains problem, particularly makes the overall frame of major diameter The wall thickness accuracy of ring can be maintained in smaller range, and deep trouth Precision Machining problem is solved in actual processing, realized big The accurate processing of diameter aluminium alloy nonuniform section frame ring；

The cutter track of finishing described in the utility model, it is ensured that the machining accuracy of γ grooves, it is to avoid what processing pause was caused connects The defects such as knife, and chip accumulation will not to processing impact；

The integral rigidity enhancing of profiling layer blanking method, wherein cutter that semifinishing described in the utility model is used, keeps away Exempt from the cutter abrupt change of cross-section and integral rigidity is weakened excessive, and avoid in processing interfering with part；

Broach shell in finishing described in the utility model can play a protective role to cutter hub clamping position, prevent cutter hub Because of fail in compression during Reusability, so that tool life.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model Protection domain within.

Claims (6)

1. a kind of cutter for being used to process γ groove frame rings, it is characterised in that including：Semifinishing tool matrix (31) and broach shell sheet Body (41), the semifinishing tool matrix (31) is in strip square column structure, is set in one end of semifinishing tool matrix (31) Kink that is having that sectional dimension changes and with semifinishing tool matrix (31) being in angle, the kink turns including first Corner (32), the second corner part (33) and flat part (34), second corner part (33) and acute angle folded by flat part (34) are small In the first corner part (32) and acute angle folded by flat part (34), the cutter head (35) for cutting is provided with kink end；It is described The fixing end of semifinishing tool matrix (31) is installed with the knife bar (43) of strip flat column, and the knife bar (43) is embedded in broach shell In body (41), the broach shell body (41) is provided with strip knife bar groove (40), the broach shell body (41) and is also provided with knife bar Fixing hole (42), is screwed in knife bar fixing hole (42) using bolt part and holds out against knife bar in knife bar groove (40).

2. a kind of cutter for being used to process γ groove frame rings as claimed in claim 1, it is characterised in that first corner part (32) it is 30 ° with acute angle folded by flat part (34), the second corner part (33) is 15 ° with acute angle folded by flat part (34).

3. a kind of cutter for being used to process γ groove frame rings as claimed in claim 1, it is characterised in that the flat part (34) It is cut into an inclined end face in end.

4. a kind of cutter for being used to process γ groove frame rings as claimed in claim 3, it is characterised in that incline flat part (34) end It is oblique into rear angle number be 20 °.

5. a kind of cutter for being used to process γ groove frame rings as claimed in claim 1, it is characterised in that the cutter head (35) uses The mode of welding is fixed on kink end.

6. a kind of cutter for being used to process γ groove frame rings as claimed in claim 1, it is characterised in that the broach shell body (41) Stepped transition.