CN112276221A - Drawing and planing tool for machining multi-head rifling - Google Patents
Drawing and planing tool for machining multi-head rifling Download PDFInfo
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- CN112276221A CN112276221A CN202011129478.6A CN202011129478A CN112276221A CN 112276221 A CN112276221 A CN 112276221A CN 202011129478 A CN202011129478 A CN 202011129478A CN 112276221 A CN112276221 A CN 112276221A
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- tool
- cutter
- head
- machining
- rifling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
- B23D43/04—Broaching tools for cutting by rectilinear movement having inserted cutting edges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention relates to a machine tool cutter, in particular to a broaching tool for machining a multi-head rifling, which comprises a cutter body, a plurality of cutter seats and cutter heads of a plurality of broaching workpieces, wherein the cutter heads are arranged on the cutter seats in a one-to-one correspondence manner; the cutter body is a cylindrical workpiece with a central through hole, the tail part of the cutter body is arranged on a cutter bar outside a machine tool, an ejector rod and a taper sleeve are coaxially arranged in the cutter body, the taper sleeve is sleeved on the ejector rod, the rear end of the ejector rod is connected with an inner rod of the machine tool, and the inner rod of the machine tool is driven by a servo motor in the machine tool; the tool apron is distributed in an annular shape along the radial direction of the tool body, and the lower end of the tool apron is installed on the outer edge of the taper sleeve. The ejector rod drives the taper sleeve to realize axial displacement, the synchronous expansion and contraction effect of a plurality of tool bits is achieved, the ejector rod is driven by a servo inner rod of the machine tool, the expansion and contraction of the tool bits can be completely controlled in a numerical control mode, and the machining efficiency is greatly improved.
Description
Technical Field
The invention relates to a machine tool cutter, in particular to a drawing and planing cutter for machining multi-head rifling.
Background
The artillery has high importance in the military field, the gun barrel is used as a key part of the artillery, the length-diameter ratio is large, the material hardness is high, the structure is complex, and the manufacturing difficulty of the gun barrel is greatly increased. The rifling processing is an important process in the manufacturing of gun barrels, and the surface quality and the processing precision of the rifling have decisive influence on the service life of the artillery and the accuracy of a striking target. The nature of the gun rifling is a group of internal spiral lines, and at present, a mechanical broaching mode is mainly used, and the movement of a cutter is controlled by adopting a mechanical profiling method to process the rifling. Therefore, the accuracy of the broaching track is not easy to ensure, and the cutter compensation cannot be completed.
Disclosure of Invention
In order to solve the problems, the invention provides a pulling and planing tool with a brand new structure, a plurality of tool bits can synchronously expand and contract, tool compensation can be realized, and the machining precision and the machining efficiency are greatly improved. The technical scheme adopted by the invention is as follows:
a broaching tool for machining a multi-head rifling comprises a tool body, a plurality of tool holders and a plurality of tool bits of broaching workpieces, wherein the tool bits of the broaching workpieces are correspondingly arranged on the tool holders one by one;
the cutter body is a cylindrical workpiece with a central through hole, the tail part of the cutter body is arranged on a cutter bar outside a machine tool, an ejector rod and a taper sleeve are coaxially arranged in the cutter body, the taper sleeve is sleeved on the ejector rod, the rear end of the ejector rod is connected with an inner rod of the machine tool, and the inner rod of the machine tool is driven by a servo motor in the machine tool;
the tool apron is distributed in an annular shape along the radial direction of the tool body, and the lower end of the tool apron is installed on the outer edge of the taper sleeve.
According to the drawing and planing tool for machining the multi-head rifling, the rod bodies at the front end and the rear end of the ejector rod are respectively sleeved with the spring I and the spring II, and the spring I and the spring II are used for adjusting a gap when the ejector rod drives the taper sleeve to move axially.
The drawing and planing tool for machining the multi-head rifling is characterized in that the front end of the through hole of the tool body is sleeved with the front supporting sleeve, the rear end of the through hole of the tool body is sleeved with the rear supporting sleeve, the ejector rod is provided with the retaining ring I and the retaining ring II, the spring I is blocked in the front supporting sleeve by the retaining ring I, and the spring II is blocked in the rear supporting sleeve by the retaining ring II.
According to the broaching and planing tool for machining the multi-head rifling, the outer edge of the tool body is provided with the front guide key, and the front guide key is axially positioned in front of the tool bit.
According to the drawing and planing tool for machining the multi-head rifling, the soft guide key is mounted on the outer edge of the tool body, and the soft guide key is axially located in front of the front guide key.
According to the broaching and planing tool for machining the multi-head rifling, the tool apron is provided with the convex block, the lower end face of the tool bit is provided with the groove capable of clamping the convex block, and the tool bit is fastened in the tool apron through the screw.
According to the broaching and planing tool for machining the multi-head rifling, the outer edge of the taper sleeve is uniformly provided with the plurality of T-shaped grooves along the radial direction, and the lower end of each tool apron is provided with the T-shaped block which can be inserted into the T-shaped grooves.
The drawing and planing tool for machining the multi-head rifling is characterized in that the tail of the tool body is provided with a rectangular thread which is connected with an outer tool bar of a machine tool.
The broaching and planing tool for machining the multi-head rifling is characterized in that the tool bit can be provided with 3, 4, 6 or 8 tool bits.
The invention has the beneficial effects that:
firstly, the ejector rod drives the taper sleeve to realize axial displacement, the synchronous expansion and contraction effect of a plurality of tool bits is achieved, the ejector rod is driven by a servo inner rod of a machine tool, the expansion and contraction of the tool bits can be completely controlled in a numerical control mode, and the machining efficiency is greatly improved.
And two ends of the ejector rod are provided with springs, so that the compensation is realized for the cutter, and the processing precision is further improved.
Thirdly, the cutter head is clamped by the forming machine, so that the quick replacement can be realized, the time can be shortened, and the efficiency can be further improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A of FIG. 1;
FIG. 3 is a schematic diagram of a taper sleeve structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a tool holder according to an embodiment of the invention;
fig. 5 is a schematic view of a tool tip according to an embodiment of the invention.
In the figure: the device comprises a push rod 1, a retainer ring 2, a retainer ring I, a front support sleeve 3, a cutter body 4, a spring I, a spring seat 6, a cutter head 7, a press block 8, a screw 9, a rear support sleeve 10, a spring II, a retainer ring II, a soft guide key 13, a front guide key 14, a taper sleeve 15, a T-shaped groove 16, a T-shaped block 17, a groove 18 and a bump 19.
Detailed Description
The invention is further explained below with reference to the drawings.
The embodiment of the invention relates to a broaching tool for machining a multi-head rifling, which comprises a tool body 4, a plurality of tool holders 6 and tool bits 7 of a plurality of broaching workpieces, wherein the tool bits 7 are arranged on the tool holders 6 in a one-to-one correspondence manner. The cutting head 7 can be provided with 3, 4, 6 or 8 cutting heads 7, preferably 8 cutting heads 7 in the embodiment
The cutter body 4 is a cylindrical workpiece with a central through hole, and the tail part of the cutter body 4 is provided with a rectangular thread to be connected with an outer cutter rod of a machine tool. An ejector rod 1 and a taper sleeve 15 are coaxially installed in the cutter body 4, and the taper sleeve 15 is coaxially sleeved on the ejector rod 1. Two ends of the ejector rod 1 respectively extend out of two ends of the cutter body 4, the rear end of the ejector rod 1 is connected with a machine tool inner rod, and the machine tool inner rod is driven by a servo motor in a machine tool to realize accurate control. The tool apron 6 is distributed annularly along the radial direction of the cutter body 4, a plurality of T-shaped grooves 16 are uniformly formed in the outer edge of the taper sleeve 15 along the radial direction, and the lower end of each tool apron 6 is a T-shaped block which can be inserted into the T-shaped grooves 16.
When the broaching machine works, the cutter body 4 is driven by a cutter bar outside the machine tool to move linearly, and the cutter body 4 moves rightwards to realize broaching of rifling; when the cutter body 4 retracts leftwards, each cutter head 7 needs to retract to avoid scratching a workpiece, at the moment, the inner rod of the machine tool drives the ejector rod 1 and the taper sleeve 15 to move leftwards, and the cutter heads 7 can retract synchronously along the radial direction; on the contrary, when the mandril 1 and the taper sleeve 15 move rightwards, the cutter head 7 expands and expands along the radial direction to continue broaching. So realize to the swift, the high accuracy synchronization regulation of tool bit 7.
Above-mentioned processing bull rifling is with drawing planer tool, the cover is equipped with spring I5 and spring II 11 respectively on the body of rod of 1 front end of ejector pin and rear end, the through-hole front end cover of cutter body 4 is equipped with preceding supporting sleeve 3, rear end cover and is equipped with back supporting sleeve 10, be equipped with retaining ring I2 and retaining ring II 12 on the ejector pin 1, spring I5 keeps off in preceding supporting sleeve 3 by retaining ring I2, spring II 11 keeps off in back supporting sleeve 10 by retaining ring II 12. And the spring I5 and the spring II 11 are used for adjusting the gap when the ejector rod 1 drives the taper sleeve 15 to axially and linearly reciprocate, so that the machining precision is further improved.
The outer edge of the cutter body 4 is provided with a front guide key 14 and a soft guide key 13, the front guide key 14 is axially positioned in front of the cutter head 7, and the soft guide key 13 is axially positioned in front of the front guide key 14. When the cutter enters the guide sleeve of the machine tool during working, the soft guide key 13 and the preposed guide key 14 can play a supporting role to ensure the cutting precision of the cutter, and meanwhile, the preposed guide key 14 can cut off burrs in the cutting process to reduce the abrasion of the soft guide key 13.
The tool apron 6 is clamped and positioned with the tool bit 7, the tool apron 6 is provided with a convex block 19, the lower end face of the tool bit 7 is provided with a groove 18 capable of clamping the convex block 19, the tool bit 7 is tightly pressed and fastened in the tool apron 6 through a screw 9, and quick and accurate tool changing can be achieved.
Claims (9)
1. The utility model provides a processing bull rifling is with drawing planer tool which characterized in that: comprises a cutter body (4), a plurality of cutter seats (6) and a plurality of cutter heads (7) of the drawing and planing work pieces, wherein the cutter heads (7) are arranged on the cutter seats (6) in a one-to-one correspondence manner;
the cutter body (4) is a cylindrical workpiece with a central through hole, the tail part of the cutter body (4) is arranged on an outer cutter bar of a machine tool, an ejector rod (1) and a taper sleeve (15) are coaxially arranged in the cutter body (4), the taper sleeve (15) is sleeved on the ejector rod (1), the rear end of the ejector rod (1) is connected with an inner rod of the machine tool, and the inner rod of the machine tool is driven by a servo motor in the machine tool;
the tool apron (6) is distributed in an annular shape along the radial direction of the tool body (4), and the lower end of the tool apron (6) is installed on the outer edge of the taper sleeve (15).
2. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: the device is characterized in that a spring I (5) and a spring II (11) are respectively sleeved on the rod bodies at the front end and the rear end of the ejector rod (1), and the spring I (5) and the spring II (11) are used for adjusting the gap when the ejector rod (1) drives the taper sleeve (15) to move axially.
3. The broaching tool for machining a multi-head rifling according to claim 2, characterized in that: the cutter body (4) through-hole front end cover is equipped with preceding supporting sleeve (3), rear end cover is equipped with back supporting sleeve (10), be equipped with retaining ring I (2) and retaining ring II (12) on ejector pin (1), spring I (5) are kept off in preceding supporting sleeve (3) by retaining ring I (2), spring II (11) are kept off in back supporting sleeve (10) by retaining ring II (12).
4. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: the cutter body (4) is provided with a front guide key (14) on the outer edge, and the front guide key (14) is axially positioned in front of the cutter head (7).
5. The broaching tool for machining the multi-head rifling according to claim 4, wherein: the outer edge of the cutter body (4) is provided with a soft guide key (13), and the soft guide key (13) is axially positioned in front of a front guide key (14).
6. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: the tool apron is characterized in that a convex block (19) is arranged on the tool apron (6), a groove (18) capable of clamping the convex block (19) is formed in the lower end face of the tool bit (7), and the tool bit (7) is fastened in the tool apron (6) through a screw (9).
7. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: a plurality of T-shaped grooves (16) are uniformly formed in the outer edge of the taper sleeve (15) along the radial direction, and the lower end of each tool apron (6) is provided with a T-shaped block which can be inserted into the T-shaped grooves (16).
8. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: the tail of the cutter body is provided with a rectangular thread which is connected with an outer cutter rod of the machine tool.
9. The broaching tool for machining a multi-head rifling according to claim 1, characterized in that: the cutter head (7) can be provided with 3, 4, 6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129478.6A CN112276221A (en) | 2020-10-21 | 2020-10-21 | Drawing and planing tool for machining multi-head rifling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129478.6A CN112276221A (en) | 2020-10-21 | 2020-10-21 | Drawing and planing tool for machining multi-head rifling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112276221A true CN112276221A (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011129478.6A Pending CN112276221A (en) | 2020-10-21 | 2020-10-21 | Drawing and planing tool for machining multi-head rifling |
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| Country | Link |
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| CN (1) | CN112276221A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3116596A1 (en) * | 1981-04-27 | 1982-11-11 | Th. Kieserling & Albrecht Gmbh & Co, 5650 Solingen | Tool carrier for the internal peeling of pipes |
| CN2832367Y (en) * | 2005-11-11 | 2006-11-01 | 潍柴动力股份有限公司 | Boring knife capable of radially cutting |
| CN202207812U (en) * | 2011-08-14 | 2012-05-02 | 无锡振华机械有限公司 | Boring cutter |
| CN202726099U (en) * | 2012-07-04 | 2013-02-13 | 上海瑞尔实业有限公司 | Tensioning mandrel attached with axial friction force |
| CN203509190U (en) * | 2013-07-17 | 2014-04-02 | 广东联塑科技实业有限公司 | Broach for eliminating burrs on inner surface of long pipe fitting |
| CN104400039A (en) * | 2014-10-09 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Multifunctional regulating boring bar |
-
2020
- 2020-10-21 CN CN202011129478.6A patent/CN112276221A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3116596A1 (en) * | 1981-04-27 | 1982-11-11 | Th. Kieserling & Albrecht Gmbh & Co, 5650 Solingen | Tool carrier for the internal peeling of pipes |
| CN2832367Y (en) * | 2005-11-11 | 2006-11-01 | 潍柴动力股份有限公司 | Boring knife capable of radially cutting |
| CN202207812U (en) * | 2011-08-14 | 2012-05-02 | 无锡振华机械有限公司 | Boring cutter |
| CN202726099U (en) * | 2012-07-04 | 2013-02-13 | 上海瑞尔实业有限公司 | Tensioning mandrel attached with axial friction force |
| CN203509190U (en) * | 2013-07-17 | 2014-04-02 | 广东联塑科技实业有限公司 | Broach for eliminating burrs on inner surface of long pipe fitting |
| CN104400039A (en) * | 2014-10-09 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Multifunctional regulating boring bar |
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