CN102699420A - Combined broach for machining double straight square holes and using method for combined broach - Google Patents

Combined broach for machining double straight square holes and using method for combined broach Download PDF

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Publication number
CN102699420A
CN102699420A CN2012102133371A CN201210213337A CN102699420A CN 102699420 A CN102699420 A CN 102699420A CN 2012102133371 A CN2012102133371 A CN 2012102133371A CN 201210213337 A CN201210213337 A CN 201210213337A CN 102699420 A CN102699420 A CN 102699420A
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CN
China
Prior art keywords
broaching
square hole
parallel
cutter
hole
Prior art date
Application number
CN2012102133371A
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Chinese (zh)
Inventor
侯国庆
陈勇
樊华
Original Assignee
成都航威精密刃具有限公司
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Publication date
Application filed by 成都航威精密刃具有限公司 filed Critical 成都航威精密刃具有限公司
Priority to CN2012102133371A priority Critical patent/CN102699420A/en
Publication of CN102699420A publication Critical patent/CN102699420A/en

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Abstract

The invention discloses a combined broach for machining double straight square holes and a using method for the combined broach. The combined broach comprises a pull rod and a rear support handle. Two fixed and parallel square hole broaches are arranged between the pull rod and the rear support handle. In a broaching process, the two broaches are kept in a parallel positional relation, and a distance between square holes in a workpice is always equal to that between the two square hole broaches, so that the distance between the square holes in the workpiece is effectively ensured; the conventional positioning fixture which is fixed on a broaching machine in broaching machining and used for the conventional single hole machining process adopting a positioning fixture clamping mode is eliminated, the parallel square hole broaches are directly fixed on the pull rod and the rear support handle of the broach, the forced positioning of the broach can be shifted to a bench worker tabletop from the broaching machine, and the positioning in the broaching machine is not required, so that an alignment procedure is eliminated, and the production efficiency is improved; and the positioning alignment procedure is shifted to the bench worker tabletop from the broaching machine, so that difficulty in the positioning alignment is greatly lowered, and the labor intensity of a worker is reduced.

Description

A kind of built-up broach and method for using thereof that is used for the processing of straight both sides hole
Technical field
The present invention relates to the process tool and the method for using thereof of square hole in a kind of machining, specifically be meant a kind of built-up broach and method for using thereof that is used for the processing of straight both sides hole.
Background technology
Run into both sides hole or the machine cut processing in hole in many ways at mechanical processing industry through regular meeting, such as the processing of electric parts, or the like.
The cut of a plurality of circular holes is easy to, and such as boring that utilizes jig boring machine or numerical control machining center or ream processing, all can guarantee the dimensional accuracy and the relative positional accuracy of circular hole.And the cut of square hole is many with regard to having bothered relatively, and the common processing mode that can utilize has: spark machined, line cutting processing, slotting processing, broaching processing.Wherein spark machined, line cutting processing, slotting processing efficient are extremely low, and cost is high, is unwell to the production in enormous quantities type.If the production in enormous quantities pattern, the broaching processing method promptly is optimum selection.
Conventional broaching tool clamping is unsteady installation way, if the square hole of being broached is a single hole, and only need guarantee the perpendicularity precision of its dimensional accuracy and each face of hole, adopts the unsteady installation way of conventional broaching tool to get final product.If by the broaching square hole is diplopore or porous; Except that the perpendicularity precision that will guarantee dimensional accuracy and each face of hole; Also to guarantee the relative positional accuracy between the Kong Yukong; The broaching tool that floats can not adopt the unsteady installation way of conventional broaching tool this moment, because can not guarantee the relative positional accuracy between the Kong Yukong.
In order in broaching, to guarantee both sides hole or the positional precision between the Kong Kongyu hole in many ways; Must adopt the pressure installation way of each broaching tool; Guarantee the clamping position precision between broaching tool and the broaching tool, and in broaching, guarantee this positional precision not receive the influence of cutting force and change.
In order to reach this purpose, the most conventional way is to adopt the positioning fixture that is fixed in the broaching machine to guarantee the position relation of broaching tool at present.This type positioning jig device has multiple, but principle is all the same, promptly is location-plate or the positioning key that utilizes in the anchor clamps, broaching tool is positioned and leads, to reach the purpose that guarantees broaching tool position relation.The defective of this type of positioning fixture is to use not too convenient: cooperating by matched in clearance between location-plate in the anchor clamps or positioning key and the broaching tool; If fit clearance is big, its location and guiding accuracy are poor, can not guarantee the positional precision of pulled hole; If fit clearance hour because of positioning fixture is installed in the broaching machine, adds that there is certain weight in broaching tool, it is not a nothing the matter that broaching tool that will be heavier inserts in the positioning fixture smoothly; Simultaneously, two or manyly also need be connected after inserting broaching tool in the positioning fixture, very inconvenient with pull bar.
Summary of the invention
The object of the present invention is to provide a kind of built-up broach and method for using thereof that is used for the processing of straight both sides hole; Solve in the present both sides hole process distance between borehole control accuracy low, be difficult to Compound Machining simultaneously; And the problem of location and installation difficulty reaches the purpose that improves broaching hole site precision.
The object of the invention is realized through following technical proposals:
A kind of built-up broach that is used for the processing of straight both sides hole comprises pull bar and butt handle, the Square hole broaching cutter that between pull bar and butt handle, two fixed-site is installed and is parallel to each other, and the pull end of Square hole broaching cutter is connected with the butt handle with pull bar respectively with the back handle.Employing is provided with pull bar and butt handle, the mode of two Square hole broaching cutters of fixed installation between pull bar and butt handle, and Square hole broaching cutter has had the pull end and back handle of connection effect; The workpiece that to be broached is sleeved on two Square hole broaching cutters, by pull bar and butt handle Square hole broaching cutter is fixed, in the broaching process; Because two broaching tools are parallel to each other, the holding position relation, the distance between the workpiece upper aperture equals two distances between the Square hole broaching cutter forever; Effectively guaranteed the distance between the workpiece upper aperture; In present single hole process, the mode of utilizing positioning fixture to clamp conventionally in the cancellation broaching processing is fixed on the positioning fixture on the broaching machine; Directly on the pull bar of broaching tool and butt handle, fix parallel Square hole broaching cutter; The pressure location of broaching tool can move on to from broaching machine on the pincers worker table top, not be used in the broaching machine and locatees, and has reduced working strength of workers.
Described pull bar comprises neck; Be respectively arranged with snap ring and two parallel-plates at the two ends of neck; Between two parallel-plates, be provided with the dividing plate vertical with parallel-plate; Two ends at two parallel-plates are equipped with cover plate, the positioning clamping cavity that the pull end of two parallel-plates, dividing plate and cover plate formation and Square hole broaching cutters is complementary.Pull bar comprises neck; The two ends of neck are respectively snap ring and clamping cavity; The clamping cavity is that two separate square clamping holes are formed, and clamping hole is surrounded by two parallel-plates, dividing plate and cover plates and forms, and the distance between two square clamping holes remains the thickness of dividing plate; There is rational gap between the clamping part of clamping hole and Square hole broaching cutter, is convenient to insertion, the installation of Square hole broaching cutter.
Pull end at described two parallel-plates and Square hole broaching cutter is provided with the pin-and-hole that latch is installed.For easy for installation, reduce the labour intensity of installing in the actual production process, the pull end that is employed in two parallel-plates and Square hole broaching cutter is provided with pin-and-hole; The mode of latch is installed in pin-and-hole; Not only can easily interconnect pull bar and broaching tool, and easy to operate, insert easily and take out; Latch is designed to step, guarantees in the broaching process, not come off.
Described butt handle comprises neck; Be respectively arranged with snap ring and two parallel-plates at the two ends of neck; Between two parallel-plates, be provided with the dividing plate vertical with parallel-plate; Two ends at two parallel-plates are equipped with cover plate, the positioning clamping cavity that the back handle of two parallel-plates, dividing plate and cover plate formation and Square hole broaching cutters is complementary.In like manner, the structure of butt handle and pull bar is identical, wherein is positioned at the pull bar that is of Square hole broaching cutter cutter tooth rake face one side, and the other end is the butt handle.In the broaching process; The positioning clamping cavity of pull bar and butt handle is as being located by connecting the position; The relative position relation that guarantees two Square hole broaching cutters does not change; Pull bar is simultaneously also as traction element, and the transmission through latch spurs Square hole broaching cutter forward, and the butt handle also plays the effect of setting off to Square hole broaching cutter simultaneously.
Back handle at described two parallel-plates and Square hole broaching cutter is provided with the pin-and-hole that latch is installed.
A kind of method for using that is used for the built-up broach of straight both sides hole processing may further comprise the steps:
(A) on vice bench, put a support plank that matter is soft, support the overall width of the width of plank greater than two Square hole broaching cutters, length is suitable with Square hole broaching cutter cutter tooth partial-length, and height is greater than the thickness of pull bar or butt handle parallel-plate;
(B) two Square hole broaching cutters are lain on the support plank, make the pull end of Square hole broaching cutter and back handle be lifted away from vice bench, and will be gone into Square hole broaching cutter by broaching part the past sleeve;
(C) pull end of Square hole broaching cutter and back handle are inserted the positioning clamping cavity of pull bar and butt handle respectively, the location of realization Square hole broaching cutter, the distance between two Square hole broaching cutters remains the thickness of dividing plate;
(D) latch is inserted pin-and-hole, interconnect with Square hole broaching cutter and pull bar and with Square hole broaching cutter and butt handle;
(E) will assemble the Square hole broaching cutter of accomplishing and move to broaching machine, realize broaching processing;
(F) after broaching machines, extract latch, and take off pull bar and butt handle, take off the part after the processing.
According to the said method step,, not only once broach and just can accomplish the processing of two square holes with respect to traditional square hole broaching layout; And the distance between two holes keeps better, and precision is higher; Reduced the aligning time of secondary operations, improved production efficiency greatly, the pressure of broaching tool location has been moved on to from broaching machine on the pincers worker table top; Not be used in the broaching machine and locate, reduced working strength of workers.
The present invention compared with prior art has following advantage and beneficial effect:
A kind of built-up broach that is used for the processing of straight both sides hole of 1 the present invention is in the broaching process, because two broaching tools are parallel to each other; The holding position relation, the distance between the workpiece upper aperture equals two distances between the Square hole broaching cutter forever, has effectively guaranteed the distance between the workpiece upper aperture; In present single hole process; Conventionally in the mode of utilizing positioning fixture to clamp, cancellation broaching processing be fixed on the positioning fixture on the broaching machine, directly on the pull bar of broaching tool and butt handle, fix parallel Square hole broaching cutter; The pressure location of broaching tool can move on on the pincers worker table top from broaching machine; Not be used in the broaching machine and locate, improved production efficiency, reduced operator's labour intensity;
A kind of method for using that is used for the built-up broach of straight both sides hole processing of 2 the present invention, with respect to traditional square hole broaching layout, not only once broaching just can be accomplished two square holes; And the distance between two holes keeps better, and precision is higher; Reduced the aligning time of secondary operations, improved production efficiency greatly, will locate alignment process and transfer on the pincers worker operating desk from broaching machine; Greatly reduce the difficulty that the location is aimed at, reduced working strength of workers.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a Tiebar structure sketch map of the present invention;
Fig. 3 is a butt handle structure sketch map of the present invention.
Mark and corresponding parts title in the accompanying drawing:
The 1-pull bar, 2-butt handle, 3-Square hole broaching cutter, 4-neck, 5-snap ring, 6-parallel-plate, 7-dividing plate, 8-cover plate, 9-latch.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, but embodiment of the present invention is not limited thereto.
Embodiment
Shown in Fig. 1 to 3, a kind of built-up broach that is used for the processing of straight both sides hole of the present invention comprises pull bar 1 and butt handle 2; The Square hole broaching cutter 3 that between pull bar 1 and butt handle 2, two fixed-site is installed and is parallel to each other; Butt handle 2 is identical with the structure of pull bar 1, and what wherein be positioned at Square hole broaching cutter 3 cutter tooth rake faces one side is pull bar 1, and the other end is a butt handle 2; In the broaching process; The positioning clamping cavity of pull bar 1 and butt handle 2 guarantees that as being located by connecting the position relative position relation of two Square hole broaching cutters 3 does not change, and pull bar 1 is simultaneously also as traction element; Transmission through latch 9 spurs Square hole broaching cutter 3 forward, and butt handle 2 also plays the effect of setting off to Square hole broaching cutter 3 simultaneously; Wherein, Pull bar 1 comprises neck 4, and the two ends of neck 4 are respectively snap ring 5 and clamping cavity, and the clamping cavity is that two separate square clamping holes are formed; Clamping hole is surrounded by two parallel-plates 6, dividing plate 7 and cover plate 8 and forms; Distance between two square clamping holes remains the thickness of dividing plate 8, has rational gap between the clamping part of clamping hole and Square hole broaching cutter 3, is convenient to insertion, the installation of Square hole broaching cutter.In actual production process,, the specifications and models of two Square hole broaching cutters 3 of adjustment can be set according to the square hole actual size of processing work.
With the following square hole of broaching processing is example: square hole size 25mmX38mm, and tolerance is respectively+0.04 ~+0.09mm and+0.05 ~+0.15mm; The depth of parallelism of each face of square hole and perpendicularity 0.05mm; Distance 3.5 ± 0.15mm between two holes; Depth of parallelism 0.10mm between two holes.
Above-mentioned in order to guarantee fully by each dimensional parameters of broaching part, adopted following processes:
(A) on vice bench, put a support plank that matter is soft; Support the overall width of the width of plank greater than two Square hole broaching cutters 3; Length is suitable with Square hole broaching cutter 3 cutter tooth partial-lengths; Height is greater than the thickness of pull bar 1 or butt handle 2 parallel-plates 6, and requiring the thickness of dividing plate 7 should satisfy two distances after Square hole broaching cutter 3 installing and locating is 3.5 ± 0.05mm;
(B) two Square hole broaching cutters 3 are lain on the support plank, make the pull end of Square hole broaching cutter 3 and back handle be lifted away from vice bench, and will be gone into Square hole broaching cutter 3 by broaching part the past sleeve;
(C) pull end of Square hole broaching cutter 3 and back handle are inserted the positioning clamping cavity of pull bar (1) and butt handle (2) respectively, the location of realization Square hole broaching cutter 3, the distance between two Square hole broaching cutters 3 remains the thickness 3.5 ± 0.05mm of dividing plate 7;
(D) latch 9 is inserted pin-and-holes, with Square hole broaching cutter 3 and pull bar 1 and with Square hole broaching cutter 3 with and butt handle 2 interconnect;
(E) will assemble the Square hole broaching cutter of accomplishing 3 and move to broaching machine, realize broaching processing;
(F) after broaching machines, extract latch 9, and take off pull bar 1 and butt handle 2, take off the part after the processing.
The depth of parallelism of square hole size 25mmX38mm and each face of square hole, perpendicularity are guaranteed by the accuracy of manufacture of Square hole broaching cutter 3 corresponding sizes and the depth of parallelism, perpendicularity; Distance 3.5 ± 0.15mm between two holes and the depth of parallelism 0.10mm between two holes, the pressure installation way of two Square hole broaching cutters 3 of employing guarantees two Square hole broaching cutters, 3 corresponding range accuracy and parallelism precisions, thereby guarantees the distance and the depth of parallelism of square hole.The precision of all dimensional parameters relevant with the work piece precision should be brought up to 1/3 of work piece precision as much as possible in the broaching, so the precision of Square hole broaching cutter 3 corresponding size parameters is designed to respectively: Square hole broaching cutter 3 size 25mmX38mm tolerances are+0.055 ~+0.075mm and+0.08 ~+0.12mm; The depth of parallelism of Square hole broaching cutter 3 each face and perpendicularity 0.02mm; Distance 3.5 ± 0.05mm between two Square hole broaching cutters 3; The depth of parallelism 0.03mm of two Square hole broaching cutters 3.
The pressure clamping of Square hole broaching cutter 3 does not adopt the positioning fixture that is fixed in the broaching machine, but directly on Square hole broaching cutter 3, pull bar 1 and butt handle 2, the installing and locating face is set, and the pressure clamping position fixing process that is about to Square hole broaching cutter 3 has like this moved on on the vice bench from broaching machine.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all falls within protection scope of the present invention on every foundation technical spirit of the present invention.

Claims (6)

1. one kind is used for the built-up broach that straight both sides hole processes; It is characterized in that: comprise pull bar (1) and butt handle (2); The Square hole broaching cutter (3) that between pull bar (1) and butt handle (2), two fixed-site is installed and is parallel to each other, the pull end of Square hole broaching cutter (3) is connected with butt handle (2) with pull bar (1) respectively with the back handle.
2. a kind of built-up broach that is used for the processing of straight both sides hole according to claim 1; It is characterized in that: described pull bar (1) comprises neck (4); Be respectively arranged with snap ring (5) and two parallel-plates (6) at the two ends of neck (4); Between two parallel-plates (6), be provided with the dividing plate (7) vertical with parallel-plate (6); At the two ends of two parallel-plates (6) cover plate (8) is installed, the positioning clamping cavity that the pull end of two parallel-plates (6), dividing plate (7) and cover plate (8) formation and Square hole broaching cutter (3) is complementary.
3. a kind of built-up broach that is used for the processing of straight both sides hole according to claim 2 is characterized in that: the pull end at described two parallel-plates (6) and Square hole broaching cutter (3) is provided with the pin-and-hole that latch (9) is installed.
4. a kind of built-up broach that is used for the processing of straight both sides hole according to claim 1; It is characterized in that: described butt handle (2) comprises neck (4); Be respectively arranged with snap ring (5) and two parallel-plates (6) at the two ends of neck (4); Between two parallel-plates (6), be provided with the dividing plate (7) vertical with parallel-plate (6); At the two ends of two parallel-plates (6) cover plate (8) is installed, the positioning clamping cavity that the back handle of two parallel-plates (6), dividing plate (7) and cover plate (8) formation and Square hole broaching cutter (3) is complementary.
5. a kind of built-up broach that is used for the processing of straight both sides hole according to claim 4 is characterized in that: the back handle at described two parallel-plates (6) and Square hole broaching cutter (3) is provided with the pin-and-hole that latch (9) is installed.
6. a method for using that is used for the built-up broach of straight both sides hole processing is characterized in that, may further comprise the steps:
(A) on vice bench, put a support plank that matter is soft; Support the overall width of the width of plank greater than two Square hole broaching cutters (3); Length and Square hole broaching cutter (3) cutter tooth partial-length is suitable, and height is greater than the thickness of pull bar (1) or butt handle (2) parallel-plate (6);
(B) two Square hole broaching cutters (3) are lain on the support plank, make the pull end of Square hole broaching cutter (3) and back handle be lifted away from vice bench, and will be gone into Square hole broaching cutter (3) by broaching part the past sleeve;
(C) pull end of Square hole broaching cutter (3) and back handle are inserted the positioning clamping cavity of pull bar (1) and butt handle (2) respectively, the location of realization Square hole broaching cutter (3), the distance between two Square hole broaching cutters (3) remains the thickness of dividing plate (7);
(D) latch (9) is inserted pin-and-hole, Square hole broaching cutter (3) is interconnected with pull bar (1) and with Square hole broaching cutter (3) and butt handle (2);
(E) will assemble the Square hole broaching cutter of accomplishing (3) and move to broaching machine, realize broaching processing;
(F) after broaching machines, extract latch (9), and take off pull bar (1) and butt handle (2), take off the part after the processing.
CN2012102133371A 2012-06-27 2012-06-27 Combined broach for machining double straight square holes and using method for combined broach CN102699420A (en)

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CN2012102133371A CN102699420A (en) 2012-06-27 2012-06-27 Combined broach for machining double straight square holes and using method for combined broach

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CN2012102133371A CN102699420A (en) 2012-06-27 2012-06-27 Combined broach for machining double straight square holes and using method for combined broach

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105127507A (en) * 2015-08-10 2015-12-09 成都亨通兆业精密机械有限公司 Broaching forming method for square holes and use method thereof
CN105171116A (en) * 2015-10-26 2015-12-23 宣国建 Novel combination broach

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435676A (en) * 1992-10-27 1995-07-25 National Broach & Machine Company Two-stage broaching of engine block bearings
JP2002137118A (en) * 2000-10-27 2002-05-14 Nachi Fujikoshi Corp Carbide broach
JP2003225828A (en) * 2002-02-05 2003-08-12 Fuji Heavy Ind Ltd Broach and broaching machine
CN2871077Y (en) * 2006-02-24 2007-02-21 刘相安 Internal-hole broaching machining apparatus of hydraulic stand, stand cylinder in coal mine
CN201922118U (en) * 2010-12-08 2011-08-10 四川天虎工具有限责任公司 Combined clutch pulling-out cutter
CN202224745U (en) * 2011-08-25 2012-05-23 宁波合生制动科技有限公司 Grooving machine tool for brake calipers
CN202278249U (en) * 2011-10-21 2012-06-20 上海天核机电有限公司 Multi-station broaching device for support plate for evaporator of AP1000 nuclear power station
CN202591721U (en) * 2012-06-27 2012-12-12 成都航威精密刃具有限公司 Combined broach used for processing straight-double-square hole

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435676A (en) * 1992-10-27 1995-07-25 National Broach & Machine Company Two-stage broaching of engine block bearings
JP2002137118A (en) * 2000-10-27 2002-05-14 Nachi Fujikoshi Corp Carbide broach
JP2003225828A (en) * 2002-02-05 2003-08-12 Fuji Heavy Ind Ltd Broach and broaching machine
CN2871077Y (en) * 2006-02-24 2007-02-21 刘相安 Internal-hole broaching machining apparatus of hydraulic stand, stand cylinder in coal mine
CN201922118U (en) * 2010-12-08 2011-08-10 四川天虎工具有限责任公司 Combined clutch pulling-out cutter
CN202224745U (en) * 2011-08-25 2012-05-23 宁波合生制动科技有限公司 Grooving machine tool for brake calipers
CN202278249U (en) * 2011-10-21 2012-06-20 上海天核机电有限公司 Multi-station broaching device for support plate for evaporator of AP1000 nuclear power station
CN202591721U (en) * 2012-06-27 2012-12-12 成都航威精密刃具有限公司 Combined broach used for processing straight-double-square hole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105127507A (en) * 2015-08-10 2015-12-09 成都亨通兆业精密机械有限公司 Broaching forming method for square holes and use method thereof
CN105171116A (en) * 2015-10-26 2015-12-23 宣国建 Novel combination broach
CN105171116B (en) * 2015-10-26 2017-08-25 宣国建 A kind of NEW TYPE OF COMPOSITE broaching tool

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