CN204584328U - Adjustable counterbore oppositely draws boring machining device and supporting feeler block thereof - Google Patents

Adjustable counterbore oppositely draws boring machining device and supporting feeler block thereof Download PDF

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Publication number
CN204584328U
CN204584328U CN201420615684.1U CN201420615684U CN204584328U CN 204584328 U CN204584328 U CN 204584328U CN 201420615684 U CN201420615684 U CN 201420615684U CN 204584328 U CN204584328 U CN 204584328U
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China
Prior art keywords
pressing plate
cutter head
cutter
knife bar
directed
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CN201420615684.1U
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王志嵘
刘宁
田源
刘树彬
俞元喨
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BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
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BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
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Abstract

The utility model belongs to mechanical field, is specifically related to a kind of adjustable counterbore and oppositely draws boring machining device and supporting feeler block thereof.Object solves the difficult problem cannot carrying out conventional forward machining counterbore by Workpiece structure restriction, enhances productivity.This device comprises reverse cutting jig and split typely draws boring cutter; Described reverse cutting jig comprises body, is positioned at the positioning core axle on body, is positioned at the clamp structure of positioning core axle both sides; Each clamp structure comprises directed pressing plate, runs through directed pressing plate and the pressing plate clamping screw be fixed on by directed pressing plate on body and pressing plate locking nut, runs through directed clamping screw and the orientation lock jack panel of directed pressing plate; The described split type screw drawing boring cutter to comprise knife bar, cutter head and fixing cutter head.For space flight workpiece, working (machining) efficiency more than 2 times can be improved, once hand over inspection qualification rate 100%, reduce cutter and production cost nearly 50%, for follow-up extensive batch of product has established solid foundation.

Description

Adjustable counterbore oppositely draws boring machining device and supporting feeler block thereof
Technical field
The utility model belongs to mechanical field, is specifically related to a kind of adjustable counterbore and oppositely draws boring machining device and supporting feeler block thereof.
Background technology
Space product structural member has the features such as precision is high, complex structure, the especially design relative compact of connecting portion, such as, workpiece shown in Fig. 1, and the diameter of its housing is comparatively large, about overall length is longer, about 380mm; Housing left side is designed with the ladder hole of 14 groups of different pore sizes, and wherein processed hole is the reciprocal counterbore 11 of axial end flange datum level, is designed with boss 13 and the reinforcement 12 of mounting related components at housing cylindrical, easily causes to cut and interferes.
For the counterbore 11 in similar structures part 14 groups of apertures, adopt the following two kinds processing method at present:
1, Electrolyzed Processing
Spark-erosion machine tool is selected to process.
Principle: select, precision equal electrode identical with counter bore hole diameters, carry out Electrolyzed Processing along forward.
Advantage: the production early-stage preparations time is shorter, make frock and machined electrode life cycle costing lower.
Shortcoming: single hole is longer for process time, if batch production efficiency is extremely low.
Comprehensive: to be applicable to single-piece production or to reprocess.
2, vertical drill processing
Upright drill is selected to process.
Principle: select identical with counter bore hole diameters, that precision is equal cutter, process along forward.
Advantage: the mark-ready time is shorter, cutter structure is simple.
Shortcoming: a, affect by workpiece concrete structure, processing has limitation, can only process counterbore direction of feed without the workpiece of interfering.B, knife bar are long, poor rigidity; Tool bit abrasion is large, and the life-span is short; Processing cost is high.
Comprehensive: to be applicable to specific products small lot batch manufacture.
Along with type product constantly increased in recent years, similar structures work piece production task amount significantly increases, and the processing of traditional Electrolyzed Processing, vertical drill cannot meet the processing of specific workpiece, and production efficiency is extremely low, processing cost is high, is not suitable for batch machining.
Summary of the invention
The utility model cannot carry out a difficult problem for conventional forward machining counterbore by Workpiece structure restriction in order to solve, enhance productivity, provide a kind of adjustable counterbore oppositely to draw boring machining device and supporting feeler block thereof.
The technical scheme that the utility model adopts is:
A kind of adjustable counterbore oppositely draws boring machining device, comprises reverse cutting jig and split typely draws boring cutter;
Described reverse cutting jig comprises body, is positioned at the positioning core axle on body, is positioned at the clamp structure of positioning core axle both sides; Each clamp structure comprises directed pressing plate, runs through directed pressing plate and the pressing plate clamping screw be fixed on by directed pressing plate on body and pressing plate locking nut, runs through directed clamping screw and the orientation lock jack panel of directed pressing plate;
The described split type screw drawing boring cutter to comprise knife bar, cutter head and fixing cutter head.
Adjustable counterbore as above oppositely draws boring machining device, and wherein: in described reverse cutting jig, be furnished with alignment pin in described body, at body upper surface, corresponding directed clamping screw place has recess hole, also has multiple pin hole at body upper surface.
Adjustable counterbore as above oppositely draws boring machining device, wherein: the described split type knife bar of boring cutter that draws is cylindricality, has the internal thread of mounting screw in installation cutter head one end, has cutter head install square hole in internal thread end; Wear cotter way having close to end position of knife bar opposite side, outside knife bar, have cooling bath.
Adjustable counterbore as above oppositely draws boring machining device, wherein: described knife bar material is high carbon tool steel, heat treatment hardness is greater than 60HRC, and cylindrical cylindricity is less than 0.02mm, and cutter head installs square hole and cutter head assemblage gap is less than 0.06mm and is less than 0.03mm with knife bar cylindrical perpendicularity.
Adjustable counterbore as above oppositely draws boring machining device, and wherein: described tool tip material is white steel W18Cr4V, W6Mo5Cr4V2, carbide alloy YG, YT, YW trade mark, for two cutting edge makes, single-blade work is cut.
A kind of feeler block oppositely drawing boring machining device for adjusting adjustable counterbore described above, the cutter block locating hole for placing knife bar is had in the middle part of described feeler block, for placing the feeler block endoporus of cutter head, have the cutter head adjustment hole being through to feeler block endoporus in feeler block side.
The beneficial effects of the utility model are:
The utility model by Workpiece structure analysis, design be applicable to processing fixture and adjustable tools, a kind of adjustable counterbore is provided oppositely to draw boring machining device, be applicable to the reverse counterbore batch machining of each field structure workpiece such as space flight and aviation, solve the difficult problem cannot carrying out conventional forward machining counterbore by Workpiece structure restriction, improve tool strength, increase the range of work, ensure machining accuracy, improving production efficiency, save production cost, concrete feature is as follows:
1, being applicable to the processing of complex part counterbore, being applicable to all because of structure restriction, interference, cannot cut by forward the counterbore processing carried out, by oppositely drawing boring to machine counterbore processing, and ensureing the coaxial of shoulder hole.
2, clamp structure is simple, Set and Positioning is reliable, flexible operation
3, tool strength is high, rigidity is large, reduces the draw ratio of knife bar, thus adds the intensity of knife bar, and reduces the vibration of generation when cutter head cuts and the consumption wearing and tearing of cutter.
4, processing dimension adjustable range is large.Draw the cutter head of boring cutter, knife bar to adopt split type, cutter head can carry out changing, regulating, and the size range of processing is large
5, tool wear is little, the life-span is long.Draw the cutter head of boring cutter to make by two cutting edge, single-blade work is cut, side edge wear or damage, can Adjustiny device at any time, utilizes opposite side cutting edge to continue processing, increases service life
6, cost is low, efficiency is high.Cutter manufacture cost is low, and knife bar is reusable, and cutter head can repeat sharpening, reduces consuming cost, improves service efficiency.
The utility model applied range, can be applicable to various common driller, vertical machining centre and horizontal Machining centers, and basic technology is ripe, easily realizes.For space flight workpiece, working (machining) efficiency more than 2 times can be improved, once hand over inspection qualification rate 100%, reduce cutter and production cost nearly 50%, for follow-up extensive batch of product has established solid foundation.
Accompanying drawing explanation
Fig. 1 is space flight workpiece exemplary plot;
Fig. 2 oppositely draws the front view of reverse cutting jig in boring machining device for a kind of adjustable counterbore that the utility model provides;
Fig. 3 is the top view of fixture in Fig. 2;
Fig. 4 is the side view of fixture in Fig. 2;
Fig. 5 is the use schematic diagram of reverse cutting jig;
Fig. 6 is the split type structural representation drawing boring cutter;
Fig. 7 is the structural representation of knife bar;
Fig. 8 is the A-A direction view of Fig. 7;
Fig. 9 is the B-B direction view of Fig. 7;
Figure 10 is cutter head structure front view;
Figure 11 is cutter head structure top view;
Figure 12 is the A-A sectional view of Figure 10;
Figure 13 is that feeler block and the split type boring cutter that draws are with the use of schematic diagram;
Figure 14 is tool dresser assembling structure front view;
Figure 15 is the A-A direction view of Figure 14;
Wherein: 1, body, 2, positioning core axle, 3, directed pressing plate, 4, alignment pin, 5, pin hole, 6, recess hole, 7, pressing plate locking nut, 8, pressing plate clamping screw, 9, orientation lock jack panel, 10 directed clamping screws, 11, counterbore, 12, reinforcement, 13, boss, 14, machining hole, 21, radial drilling machine, 22, Drilling machines bench, 23, workpiece, 24, jack, 25, reverse cutting jig, 26, split typely draw boring cutter, 31, knife bar, 32, cutter head, 33, screw, 41, cutter head installs square hole, 42, wear cotter way, 43, cooling bath, 51, feeler block, 52, cutter head adjustment hole, 53, square hole is installed.
Detailed description of the invention
Boring machining device and supporting feeler block thereof is oppositely drawn to be introduced below in conjunction with drawings and Examples to the adjustable counterbore that the utility model provides:
A kind of adjustable counterbore oppositely draws boring machining device, comprises reverse cutting jig and split typely draws boring cutter.
As in Figure 2-4, reverse cutting jig comprises body 1, is positioned at the positioning core axle 2 on body 1, is positioned at the clamp structure of positioning core axle 2 both sides; Each clamp structure comprises directed pressing plate 3, runs through directed pressing plate 3 and the pressing plate clamping screw 8 be fixed on by directed pressing plate 3 on body 1 and pressing plate locking nut 7, runs through directed clamping screw 10 and the orientation lock jack panel 9 of directed pressing plate 3.In the middle part of body 1, be equipped with alignment pin 4, at body 1 upper surface, corresponding directed clamping screw 10 place has recess hole 6, also has multiple pin hole 5 at body 1 upper surface.
As shown in Figure 5, when using this reverse cutting jig 25, positioning core axle 2 level is arranged on downwards on Drilling machines bench 22.After workpiece 23 main aperture and positioning core axle 2 are located, alignment pin 4, by any one in 4 pin holes 5 in chuck body 1, inserts any one hole 14 that workpiece flange datum level has processed, completes the location of workpiece 23 in chuck body 1.Positioned directed clamping screw 10 by recess hole 6, locking orientation lock jack panel 9, completes directed pressing plate 3 and locates.Screw pressing plate clamping screw 8, pressing plate locking nut 7, realize directed pressing plate 3 and workpiece 23 is locked in chuck body 1 plane, ensure that surface of the work is injury-free simultaneously.The jack 24 of adjustment workpiece 23 lower end, plays and does supplemental support effect.Fixture reasonably limits the workpiece all directions free degree, meets the positioning requirements of workpiece counterbore processing.
Split typely draw boring cutter as shown in Figure 6, the split type screw 33 drawing boring cutter to be specifically divided into again knife bar 31, cutter head 32 and fixing cutter head 32, is furnished with feeler block and sharpening frock.
As Figure 7-9, the split type knife bar 31 of boring cutter that draws is cylindricality, has the internal thread of mounting screw 33, have cutter head install square hole 41 in internal thread end in installation cutter head side; Wear cotter way 42 having close to end position of knife bar 31 opposite side, outside knife bar 31, have cooling bath 43; Knife bar 31 two ends all have chamfering.
Knife bar 31 material selection high carbon tool steel is as CrWMn, Cr12MoV etc., heat treatment hardness is greater than 60HRC, knife bar profile T, b, c, d, L1, L2, screw thread and cutter head are installed square hole a × e, cooling bath size, are worn cotter way size f according to reality processing apolegamy size, cylindrical T cylindricity is less than 0.02mm, cutter head installs square hole a × e and cutter head assemblage gap is less than 0.06mm and ensures to be less than 0.03mm with knife bar cylindrical perpendicularity, tool setting is facilitated to adjust, cutter head reliable clamping.
The cooling bath 43 of knife bar 31 is designed with interior cold or outer cold cooling bath, is conducive to coolant flow cooling and scrap discharge, can be applicable to the equipment such as radial drilling machine, vertical machining centre and horizontal Machining centers.
As shown in figs. 10-12, tool tip material adopts the serial trade mark such as white steel W18Cr4V, W6Mo5Cr4V2, carbide alloy YG, YT, YW to cutter head structure, and be designed to two cutting edge and make, single-blade work is cut.On the one hand improve service efficiency, side edge wear or damage, can Adjustiny device at any time, utilize opposite side cutting edge to continue processing; Can adjust machinable size range on the other hand, wherein size a, e are for installing square hole fit dimension, and g is the long size of cutter head sword, and i is processed counterbore size.Preferable case is: as shown in Figure 10, and front clearance is 2 °; As shown in figure 11, auxiliary angle is 2 °, can reduce the friction with machined surface, ensures fineness and the cutter heat radiation of finished surface; As shown in figure 12, wherein anterior angle is 14-16 °, can ensure that point of a knife is sharp, cut brisk, and relief angle is 6 °, reduces and machined surface friction, can ensure point of a knife intensity.
For convenience of Adjustiny device size, Aided design feeler block 51.Having the cutter block locating hole for placing knife bar in the middle part of feeler block 51, for placing the feeler block endoporus of cutter head, having the cutter head adjustment hole 52 being through to feeler block endoporus in feeler block side.Feeler block hole size i is designed to workpiece to be processed counterbore size, and a dimension reference cutter head height dimension designs, and hole T and hole i is coaxially not more than 0.05mm.During use, as shown in figure 13, the split type boring cutter 26 front end shaft portion that draws is stretched in feeler block locating hole, feeler block locating hole diameter T and knife bar cylindrical fit clearance are not more than 0.015mm, adjust from the cutter head adjustment hole 52 of feeler block side, make the most advanced and sophisticated tight sturdy feeler block hole size i sidewall of cutter head work edge, complete the adjustment of cutter size to be processed.
For convenience of the sharpening of cutter head, be configured with sharpening frock, sharpening frock is block structure, has circular hole in adjacent both sides, and the junction of 2 circular holes, for being of a size of the installation square hole 53 of a × e, is seen shown in Figure 14,15.Cutter head is arranged on sharpening frock a × e and installs in square hole 53, only exposes and needs sharpening part, utilize the screw lock in frock.Frock is clamped on angle adjustable tool tong, by adjustment tool tong angle, can the cutting angle of sharpening cutter head as required, facilitate the making sharpening of batch cutter head, ensure that the designing requirement of cutter head simultaneously.
The adjustable counterbore using the utility model to provide oppositely draws the work flow of boring machining device as follows:
Step 1, by fixture, trade union college on lathe, workpiece is clamped, locates, centering;
Step 2, carry out the assembling of knife bar, cutter head, adjustment tool sharpening size;
Step 3, by Cutting tool installation manner on machine tool chief axis;
Step 4, unlatching lathe, utilize lathe oppositely to cut the function of auto-feed, oppositely draw boring to process;
Step 5, carry out the sharpening of tool dimension adjustment and cutter head if desired.
The utility model is the function utilizing lathe oppositely to cut auto-feed, break the conventional thought of forward machining, adopt reverse thinking, reverse clamping, the knife bar cutting moment of torque+axial compressive force is converted into the force way of the cutting moment of torque+axial tension, thus the counterbore realized by structure restriction is processed.

Claims (6)

1. adjustable counterbore oppositely draws a boring machining device, it is characterized in that: comprise reverse cutting jig and split typely draw boring cutter;
Described reverse cutting jig comprises body (1), is positioned at the positioning core axle (2) on body (1), is positioned at the clamp structure of positioning core axle (2) both sides; Each clamp structure comprises directed pressing plate (3), run through directed pressing plate (3) and the pressing plate clamping screw (8) be fixed on by directed pressing plate (3) on body (1) and pressing plate locking nut (7), run through directed clamping screw (10) and the orientation lock jack panel (9) of directed pressing plate (3);
The described split type screw (33) drawing boring cutter to comprise knife bar (31), cutter head (32) and fixing cutter head (32).
2. adjustable counterbore according to claim 1 oppositely draws boring machining device, it is characterized in that: in described reverse cutting jig, described body (1) middle part is furnished with alignment pin (4), at body (1) upper surface, corresponding directed clamping screw (10) place has recess hole (6), also has multiple pin hole (5) at body (1) upper surface.
3. adjustable counterbore according to claim 1 oppositely draws boring machining device, it is characterized in that: the described split type knife bar (31) drawing boring cutter is cylindricality, have the internal thread of mounting screw (33) in installation cutter head one end, have cutter head in internal thread end and square hole (41) is installed; Wear cotter way (42) having close to end position of knife bar (31) opposite side, have cooling bath (43) in knife bar (31) outside.
4. adjustable counterbore according to claim 3 oppositely draws boring machining device, it is characterized in that: described knife bar (31) material is high carbon tool steel, heat treatment hardness is greater than 60HRC, cylindrical cylindricity is less than 0.02mm, and cutter head is installed square hole (41) and is less than 0.06mm with cutter head (32) assemblage gap and is less than 0.03mm with knife bar cylindrical perpendicularity.
5. adjustable counterbore according to claim 4 oppositely draws boring machining device, it is characterized in that: described cutter head (32) material is white steel W18Cr4V, W6Mo5Cr4V2 or carbide alloy YG, YT, YW trade mark, for two cutting edge makes, single-blade work is cut.
6. one kind is oppositely drawn the feeler block of boring machining device for adjusting adjustable counterbore as claimed in claim 1, it is characterized in that: in the middle part of described feeler block, have the cutter block locating hole for placing knife bar (31), for placing the feeler block endoporus of cutter head (32), have the cutter head adjustment hole (52) being through to feeler block endoporus in feeler block side.
CN201420615684.1U 2014-10-22 2014-10-22 Adjustable counterbore oppositely draws boring machining device and supporting feeler block thereof Active CN204584328U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108971540A (en) * 2018-08-20 2018-12-11 沈阳透平机械股份有限公司 The processing method of cutter and the special stator blade mounting hole nest of central casing
CN109434720A (en) * 2018-12-26 2019-03-08 贵州凯星液力传动机械有限公司 A kind of processing tool and method of cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108971540A (en) * 2018-08-20 2018-12-11 沈阳透平机械股份有限公司 The processing method of cutter and the special stator blade mounting hole nest of central casing
CN109434720A (en) * 2018-12-26 2019-03-08 贵州凯星液力传动机械有限公司 A kind of processing tool and method of cutter

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