CN103611981B - A kind of broaching cutters of processing small caliber piece barrel endoporus rifling - Google Patents
A kind of broaching cutters of processing small caliber piece barrel endoporus rifling Download PDFInfo
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- CN103611981B CN103611981B CN201310643740.2A CN201310643740A CN103611981B CN 103611981 B CN103611981 B CN 103611981B CN 201310643740 A CN201310643740 A CN 201310643740A CN 103611981 B CN103611981 B CN 103611981B
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- tool rest
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- cutter holder
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Abstract
The present invention relates to a kind of broaching cutters of processing small caliber piece barrel endoporus rifling, belong to Machining Technology field. One of the present invention adds broaching cutters, comprises bracing wire knife bar, bracing wire tool rest, bracing wire cutter head; The cutter holder of bracing wire tool rest is arranged in the cutter holder installing hole of tool rest body by connecting axle, makes the cutter holder installing hole rotation of cutter holder along tool rest body, fixing bracing wire cutter head in the mounting groove of cutter holder upper surface; Core bar inserts in tool rest body; The be threaded knife bar body of bracing wire knife bar of the rear end of tool rest body, the be threaded pull bar of bracing wire knife bar of the rear end of core bar, move forward and backward by the pull plate control knife bar body on lathe headstock and the relative pull bar of tool rest body and core bar, core bar is swung up and down by two sections of cone cornice moving knife folder front ends. Bracing wire broaching cutters of the present invention is simple in structure, easy to operate, solves in small caliber piece Pipe rifling mechanical broaching, and radial expansion cutter accurately, thus realize the broaching processing of rifling.
Description
Technical field
The present invention relates to a kind of broaching cutters of processing small caliber piece barrel endoporus rifling, belong to Machining Technology field.
Background technology
Artillery rifle process technology generally has the processes such as extruding, broaching, Electrolyzed Processing. Crowded rifling is applicable to more shallow rifling, is used for the rifling processing of gun barrel. At present, main mechanical broaching and the Electrolyzed Processing of adopting of domestic cannon industry Pipe rifling processing, the method for the multiplex broaching of Large diameter, small caliber piece Pipe rifling generally adopts Electrolyzed Processing. Because some factories are without Electrolyzed Processing equipment, and lack processing experience, therefore need on the basis of enterprise's existing equipment, design a set of special tooling system and realize the processing of small caliber piece Pipe rifling.
Large diameter gun barrel is because diameter of bore is large, can realize by the cutter arrangement of design comparison complexity the processing of rifling, but the small caliber piece barrel of internal diameter little (φ 25mm, Φ 30mm), draw ratio large (85: 1) cannot use the cutter arrangement of this complexity. Because some factories are without Electrolyzed Processing equipment, and lack processing experience, investment Electrolyzed Processing equipment cost is too high, therefore need on the basis of enterprise's existing equipment, design a set of special cutter arrangement and realize the processing of small caliber piece Pipe rifling.
Summary of the invention
The broaching cutters that the object of the invention is to design a set of simple in structure, reliable and stable, easy care, solves in small caliber piece Pipe rifling mechanical broaching, radial expansion cutter accurately, thus realize the broaching processing of rifling.
The object of the invention is to be achieved through the following technical solutions:
A kind of broaching cutters of processing small caliber piece barrel endoporus rifling of the present invention, comprises bracing wire knife bar, bracing wire tool rest, bracing wire cutter head;
Wherein, bracing wire cutter head comprises knife rest and blade, and knife rest is slab construction, and the upper surface of knife rest is processed with the blade matching with rifling caliber;
Bracing wire knife bar comprises knife bar body and pull bar, the center of pull bar has through hole, the front end outer wall of pull bar is processed with external screw thread, the internal diameter of knife bar body and the external diameter of pull bar match, and the front end outer wall of knife bar body is processed with external screw thread, and the rear end of knife bar body is processed with positioning table, knife bar body is enclosed within outside pull bar, fixed head on rear end and the lathe headstock of pull bar is fixed, and back end of tie rod central through hole connects oil cooling service pipe, and the pull plate on knife bar body rear end and lathe headstock is fixed;
Bracing wire tool rest comprises tool rest body, cutter holder, core bar,
Tool rest body is the tubular construction of an end opening, and the sidewall of tool rest body is symmetrically distributed with the cutter holder installing hole of one group of axial aperture, and the inwall of opening one end of tool rest body is processed with internal thread, and in the end face of sealing one end of tool rest body, shape is square groove;
The interior shape of the cutter holder installing hole of the profile of cutter holder and tool rest body matches, and the inclined-plane that centered by cutter holder bottom, extend both sides forwards, backwards, is processed with respectively contact on two inclined-planes, and the upper surface front end of cutter holder is processed with the mounting groove matching with bracing wire cutter head knife rest;
Core bar be two sections of cone post small ends join composition connecting rod, the join length of boring shell of column of core bar two is matched with the length of cutter holder, square positioning table is extended forward in end, core bar one end, core bar other end end is inwardly processed with fuel feed hole, this fuel feed hole extends internally and passes to the conical surface of this end cone post, and the mouth inner wall of fuel feed hole is processed with internal thread;
Cutter holder is arranged in the cutter holder installing hole of tool rest body by connecting axle, makes the cutter holder installing hole rotation of cutter holder along tool rest body, fixing bracing wire cutter head in the mounting groove of cutter holder upper surface; Core bar inserts in tool rest body, and by the square positioning table of core bar front end is inserted in the square groove of tool rest body sealing one end end face, the two is circumferentially located; The be threaded knife bar body of bracing wire knife bar of the rear end of tool rest body, the be threaded pull bar of bracing wire knife bar of the rear end of core bar, move forward and backward by the pull plate control knife bar body on lathe headstock and the relative pull bar of tool rest body and core bar, core bar is swung up and down by two sections of cone cornice moving knife folder front ends.
The tool rest body sidewall of bracing wire tool rest is fixed with uniform guidance tape, when broaching cutters is entered to slender rectangular tube inner chamber, leads.
The course of work
First move forward by the pull plate control knife bar body on lathe headstock and the relative pull bar of tool rest body and core bar, the back segment cone capital of core bar plays the contact on rear side inclined-plane, cutter holder bottom, the front end edge connecting axle of cutter holder is to lower swing, make the fixing bracing wire cutter head retraction of cutter holder upper surface front end, whole broaching cutters can be along inserting from slender rectangular tube oral area; Then the bracing wire cutter head of broaching cutters is marched in slender rectangular tube after thorax Working position, move backward relative to pull bar and core bar by pull plate control knife bar body and tool rest body on lathe headstock, the leading portion cone capital of core bar plays the contact on inclined-plane, front side, cutter holder bottom, the front end edge connecting axle of cutter holder upwards swings, and the fixing bracing wire cutter head of cutter holder upper surface front end is stretched out; Last controller tool spindle box drives whole broaching cutters to carry out rifling processing.
Beneficial effect
Bracing wire broaching cutters of the present invention is simple in structure, easy to operate, solves in small caliber piece Pipe rifling mechanical broaching, and radial expansion cutter accurately, thus realize the broaching processing of rifling.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of broaching cutters of the present invention;
Fig. 2 is the structural representation of bracing wire cutter head in broaching cutters of the present invention;
Fig. 3 is the structural representation of bracing wire knife bar in broaching cutters of the present invention:
Fig. 4 is the structural representation of bracing wire tool rest in broaching cutters of the present invention;
Fig. 5 is the structural representation of core bar in broaching cutters of the present invention;
Wherein, 1-bracing wire knife bar; 2-bracing wire tool rest; 3-bracing wire cutter head; 4-pull bar; 5-knife bar body; 6-tool rest body; 7-core bar; 8-cutter holder; 9-connecting axle.
Detailed description of the invention
Below in conjunction with drawings and Examples, content of the present invention is further described.
Embodiment
As shown in Figure 1, a kind of broaching cutters of processing small caliber piece barrel endoporus rifling of the present invention, comprises bracing wire knife bar 1, bracing wire tool rest 2, bracing wire cutter head 3, and bracing wire knife bar is fixed on lathe by fixed pin shaft, and the pull bar of the inside is connected with lathe by screw thread.
As shown in Figure 2, wherein bracing wire cutter head 3 comprises knife rest and blade, and knife rest is slab construction, and the upper surface of knife rest is processed with the blade matching with rifling caliber;
As shown in Figure 3, bracing wire knife bar 1 comprises knife bar body 5 and pull bar 4, the center of pull bar 4 has through hole, the front end outer wall of pull bar 4 is processed with external screw thread, the external diameter of the internal diameter of knife bar body 5 and pull bar 4 matches, the front end outer wall of knife bar body 5 is processed with external screw thread, the rear end of knife bar body 5 is processed with positioning table, knife bar body 5 is enclosed within outside pull bar 4, fixed head on rear end and the lathe headstock of pull bar 4 is fixed, and pull bar 4 rear end central through holes connect oil cooling service pipe, and the pull plate on knife bar body 5 rear ends and lathe headstock is fixed;
As shown in Figure 4, bracing wire tool rest 2 comprises tool rest body 6, cutter holder 8, core bar 7,
Tool rest body 6 is the tubular construction of an end opening, and the sidewall of tool rest body 6 is symmetrically distributed with the cutter holder installing hole of one group of axial aperture, and the inwall of opening one end of tool rest body 6 is processed with internal thread, and in the end face of sealing one end of tool rest body 6, shape is square groove;
The interior shape of the cutter holder installing hole of the profile of cutter holder 8 and tool rest body 6 matches, the inclined-plane that centered by cutter holder 8 bottoms, extend both sides forwards, backwards, on two inclined-planes, be processed with respectively contact, the upper surface front end of cutter holder 8 is processed with the mounting groove matching with bracing wire cutter head 3 knife rests;
Core bar 7 be two sections of cone post small ends join composition connecting rod, the join length of boring shell of column of 7 liang of core bars is matched with the length of cutter holder 8, square positioning table is extended forward in core bar 7 ends, one end, core bar 7 other end ends are inwardly processed with fuel feed hole, this fuel feed hole extends internally and passes to the conical surface of this end cone post, and the mouth inner wall of fuel feed hole is processed with internal thread;
Cutter holder 8 is arranged in the cutter holder installing hole of tool rest body 6 by connecting axle 9, makes the cutter holder installing hole rotation of cutter holder 8 along tool rest body 6, fixing bracing wire cutter head 3 in the mounting groove of cutter holder 8 upper surfaces; Core bar 7 inserts in tool rest body 6, and seals in the square groove of one end end face by the square positioning table of core bar 7 front ends is inserted to tool rest body 6, and the two is circumferentially located; The be threaded knife bar body 5 of bracing wire knife bar 1 of the rear end of tool rest body 6, the be threaded pull bar 4 of bracing wire knife bar 1 of the rear end of core bar 7, move forward and backward by the pull plate control knife bar body 5 on lathe headstock and the relative pull bar 4 of tool rest body 6 and core bar 7, make core bar 7 press from both sides 8 front ends by two sections of cone cornice moving knife and swing up and down.
Tool rest body 6 sidewalls of bracing wire tool rest 2 are fixed with uniform guidance tape, when broaching cutters is entered to slender rectangular tube inner chamber, lead.
The course of work
First move forward by the pull plate control knife bar body 5 on lathe headstock and the relative pull bar 4 of tool rest body 6 and core bar 7, the back segment cone capital of core bar 7 plays the contact on cutter holder 8 rear side inclined-planes, bottom, the front end edge connecting axle 9 of cutter holder 8 is to lower swing, the fixing bracing wire cutter head 3 of cutter holder 8 upper surface front ends is bounced back, and whole broaching cutters can be along inserting from slender rectangular tube oral area; Then the bracing wire cutter head 3 of broaching cutters is marched in slender rectangular tube after thorax Working position, move backward relative to pull bar 4 and core bar 7 by pull plate control knife bar body 5 and tool rest body 6 on lathe headstock, the leading portion cone capital of core bar 7 plays the contact on cutter holder 8 inclined-planes, front side, bottom, the front end edge connecting axle 9 of cutter holder 8 upwards swings, and the fixing bracing wire cutter head 3 of cutter holder 8 upper surface front ends is stretched out; Last controller tool spindle box drives whole broaching cutters to carry out rifling processing.
Claims (2)
1. a broaching cutters of processing small caliber piece barrel endoporus rifling, is characterized in that: comprise bracing wire cutterBar, bracing wire tool rest, bracing wire cutter head;
Wherein, bracing wire cutter head comprises knife rest and blade, and knife rest is slab construction, and the upper surface of knife rest is processed withThe blade matching with rifling caliber;
Bracing wire knife bar comprises knife bar body and pull bar, and the center of pull bar has through hole, and the front end outer wall of pull bar addsWork has external screw thread, and the internal diameter of knife bar body and the external diameter of pull bar match, the front end outer wall processing of knife bar bodyHave external screw thread, the rear end of knife bar body is processed with positioning table, and knife bar body is enclosed within outside pull bar, the rear end of pull barFix with the fixed head on lathe headstock, and back end of tie rod central through hole connects oil cooling service pipe, after knife bar bodyEnd is fixed with the pull plate on lathe headstock;
Bracing wire tool rest comprises tool rest body, cutter holder, core bar,
Tool rest body is the tubular construction of an end opening, and the sidewall of tool rest body is symmetrically distributed with one group and axially opensThe cutter holder installing hole in hole, the inwall of opening one end of tool rest body is processed with internal thread, the sealing of tool rest bodyIn the end face of one end, shape is square groove;
The interior shape of the cutter holder installing hole of the profile of cutter holder and tool rest body matches, centered by cutter holder bottom forwardThe inclined-plane that extend rear both sides, is processed with respectively contact on two inclined-planes, the upper surface front end of cutter holder is processed with and drawsThe mounting groove that line cutter head knife rest matches;
Core bar is the join connecting rods of composition of two sections of cone post small ends, and core bar two length of boring shell of column of joining is matched withThe length of cutter holder, square positioning table is extended forward in end, core bar one end, and core bar other end end inwardly processesHave fuel feed hole, this fuel feed hole extends internally and passes to the conical surface of this end cone post, and the mouth inner wall of fuel feed hole addsWork has internal thread;
Cutter holder is arranged in the cutter holder installing hole of tool rest body by connecting axle, makes the cutter of cutter holder along tool rest bodyThe rotation of folder installing hole, fixing bracing wire cutter head in the mounting groove of cutter holder upper surface; Core bar inserts in tool rest body,And by the square positioning table of core bar front end is inserted in the square groove of tool rest body sealing one end end face, make the twoCircumferentially location; The be threaded knife bar body of bracing wire knife bar of the rear end of tool rest body, the rear end screw thread of core bar connectsConnect the pull bar of bracing wire knife bar, relative by pull plate control knife bar body and tool rest body on lathe headstockPull bar and core bar move forward and backward, and core bar is swung up and down by two sections of cone cornice moving knife folder front ends.
2. a kind of broaching cutters of processing small caliber piece barrel endoporus rifling as claimed in claim 1, itsFeature is: the tool rest body sidewall of bracing wire tool rest is fixed with uniform guidance tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643740.2A CN103611981B (en) | 2013-12-05 | 2013-12-05 | A kind of broaching cutters of processing small caliber piece barrel endoporus rifling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643740.2A CN103611981B (en) | 2013-12-05 | 2013-12-05 | A kind of broaching cutters of processing small caliber piece barrel endoporus rifling |
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| Publication Number | Publication Date |
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| CN103611981A CN103611981A (en) | 2014-03-05 |
| CN103611981B true CN103611981B (en) | 2016-05-18 |
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| CN201310643740.2A Active CN103611981B (en) | 2013-12-05 | 2013-12-05 | A kind of broaching cutters of processing small caliber piece barrel endoporus rifling |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975779B (en) * | 2017-04-28 | 2020-04-28 | 荣基工业科技（江苏）有限公司 | Internal feeding tool |
| CN107962232A (en) * | 2017-12-29 | 2018-04-27 | 杭州凯和精工机械有限公司 | Numerical control rifling machine |
| CN111590134A (en) * | 2020-05-25 | 2020-08-28 | 东方电气(广州)重型机器有限公司 | Broaching device and method for machining inner wall of cylinder |
| CN113601184B (en) * | 2021-08-19 | 2023-09-15 | 西安昆仑工业（集团）有限责任公司 | Numerical control milling machine for gun barrel rifling processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6644358B2 (en) * | 2001-07-27 | 2003-11-11 | Manoir Industries, Inc. | Centrifugally-cast tube and related method and apparatus for making same |
| DE102004019302B4 (en) * | 2004-04-15 | 2006-03-02 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Broaching tool and method for machining bore surfaces |
| CN2784117Y (en) * | 2005-01-18 | 2006-05-31 | 内蒙古北方重工业集团有限公司 | Digital control inner-chamber broaching lathe |
| CN102430798B (en) * | 2011-09-05 | 2013-06-05 | 东营博深石油机械有限责任公司 | Use method of numerical control machine for contour broach of internal screw of constant-wall-thickness stator |
| CN203843284U (en) * | 2013-12-05 | 2014-09-24 | 山西北方机械制造有限责任公司 | Broaching tool for machining rifling on bore of barrel of small-caliber gun |
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