CN103611981A - Broaching tool for machining small-caliber gun body tube inner hole rifling - Google Patents
Broaching tool for machining small-caliber gun body tube inner hole rifling Download PDFInfo
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- CN103611981A CN103611981A CN201310643740.2A CN201310643740A CN103611981A CN 103611981 A CN103611981 A CN 103611981A CN 201310643740 A CN201310643740 A CN 201310643740A CN 103611981 A CN103611981 A CN 103611981A
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Abstract
The invention relates to a broaching tool for machining small-caliber gun body tube inner hole rifling, and belongs to the technical field of machining. The broaching tool comprises a bracing wire tool rod, a bracing wire tool apron and a bracing wire tool bit. A tool clamp of the bracing wire tool apron is arranged in a tool clamp mounting hole of a tool apron body through a connecting shaft, the tool clamp is made to rotate around the tool clamp mounting hole of the tool apron body, and the bracing wire tool bit is fixed in a mounting groove in the upper surface of the tool clamp. A core rod is inserted into the tool apron body. The rear end of the tool apron body is in threaded connection with a tool rod body of the bracing wire tool rod, the rear end of the core rod is in threaded connection with a pull rod of the bracing wire tool rod, the tool rod body and the tool apron body are controlled through a pulling plate on a machine tool spindle box to move front and back relative to the pull rod and the core rod, and the core rod drives the front end of the tool clamp to vertically swing through two tapered columns. The bracing wire broaching tool is simple in structure and convenient to use, the tool is accurately stretched out and drawn back in the radial direction in the mechanical broaching process of the small-caliber gun body tube rifling, and therefore the broaching machining of the rifling is achieved.
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, so the tooling system that designs a set of special use on the basis of Xu enterprise existing equipment realizes 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 be used 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, so the cutter arrangement that designs a set of special use on the basis of Xu enterprise existing equipment is realized 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, the rear end of pull bar and the fixed head on lathe headstock are 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 on the ，Liang inclined-plane, inclined-plane that centered by cutter holder bottom, extend both sides forwards, backwards, is processed with respectively contact, 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 is the connecting rod that two sections of cone post small ends join and form, core bar two joins and bores the length coupling of shell of column and the length of cutter holder, extend forward and square positioning table 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 that this end is bored 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 cutter holder along the cutter holder installing hole rotation of tool rest body, the interior fixedly bracing wire cutter head of 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 and 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, by the pull plate on lathe headstock, control knife bar body and the relative pull bar of tool rest body and core bar and move forward and backward, 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 by the pull plate on lathe headstock, controlling knife bar body and the relative pull bar of tool rest body and core bar moves forward, 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, by pull plate control knife bar body and tool rest body on lathe headstock, relative to pull bar and core bar, move backward, 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, solved in small caliber piece Pipe rifling mechanical broaching, and radial expansion cutter accurately, thus realize the broaching processing of rifling.
Accompanying drawing explanation
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.
The specific embodiment
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, the rear end of pull bar 4 and the fixed head on lathe headstock are 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 is the connecting rod that two sections of cone post small ends join and form, 7 liang of core bars join and bore the length coupling of shell of column and the length of cutter holder 8, extend forward and square positioning table 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 that this end is bored 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 10, makes cutter holder 8 along the cutter holder installing hole rotation of tool rest body 6, the interior fixedly bracing wire cutter head 3 of mounting groove of cutter holder 8 upper surfaces; Core bar 7 inserts in tool rest body 6, and by the square positioning table of core bar 7 front ends and the square groove of tool rest body 6 sealing one end end faces, 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, by the pull plate on lathe headstock, control knife bar body 5 and the relative pull bar 4 of tool rest body 6 and core bar 7 and move forward and backward, 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 by the pull plate on lathe headstock, controlling knife bar body 5 and the relative pull bar 4 of tool rest body 6 and core bar 7 moves forward, 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 10 of cutter holder 8 is to lower swing, make the fixing bracing wire cutter head of cutter holder 8 upper surface front ends 3 retractions, 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, by pull plate control knife bar body 5 and tool rest body 6 on lathe headstock, relative to pull bar 4 and core bar 7, move backward, 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 10 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 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, the rear end of pull bar and the fixed head on lathe headstock are 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 on the ，Liang inclined-plane, inclined-plane that centered by cutter holder bottom, extend both sides forwards, backwards, is processed with respectively contact, 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 is the connecting rod that two sections of cone post small ends join and form, core bar two joins and bores the length coupling of shell of column and the length of cutter holder, extend forward and square positioning table 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 that this end is bored 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 cutter holder along the cutter holder installing hole rotation of tool rest body, the interior fixedly bracing wire cutter head of 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 and 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, by the pull plate on lathe headstock, control knife bar body and the relative pull bar of tool rest body and core bar and move forward and backward, 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, is characterized in that: 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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| CN103611981A true CN103611981A (en) | 2014-03-05 |
| CN103611981B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975779A (en) * | 2017-04-28 | 2017-07-25 | 荣基工业科技（江苏）有限公司 | Interior 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 |
| CN113601184A (en) * | 2021-08-19 | 2021-11-05 | 西安昆仑工业（集团）有限责任公司 | Numerical control milling machine for processing rifling of gun barrel |
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| 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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Patent Citations (5)
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| US20100215454A1 (en) * | 2001-07-27 | 2010-08-26 | Manoir Industries, Inc. | Centrifugally-cast tube and related method and apparatus for making same |
| JP2007532330A (en) * | 2004-04-15 | 2007-11-15 | マパル ファブリック フュール プラツィジョンズベルクゼウグ ドクトル．クレス カーゲー | Broach tool and method for machining hole surfaces |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975779A (en) * | 2017-04-28 | 2017-07-25 | 荣基工业科技（江苏）有限公司 | Interior feeding tool |
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| CN107962232A (en) * | 2017-12-29 | 2018-04-27 | 杭州凯和精工机械有限公司 | Numerical control rifling machine |
| CN113601184A (en) * | 2021-08-19 | 2021-11-05 | 西安昆仑工业（集团）有限责任公司 | Numerical control milling machine for processing rifling of gun barrel |
| 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 | Publication date |
|---|---|
| CN103611981B (en) | 2016-05-18 |
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