CN112846383A - Machine presss from both sides formula tongue-and-groove broach device - Google Patents
Machine presss from both sides formula tongue-and-groove broach device Download PDFInfo
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- CN112846383A CN112846383A CN202011629786.5A CN202011629786A CN112846383A CN 112846383 A CN112846383 A CN 112846383A CN 202011629786 A CN202011629786 A CN 202011629786A CN 112846383 A CN112846383 A CN 112846383A
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- blade
- groove
- seat
- machine
- mounting groove
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention discloses a machine-clamped tongue-and-groove broach device, wherein a mounting groove is formed in a tool apron, a positioning stop block is fixed at one end of the mounting groove of the tool apron, a plurality of blades are arranged in the mounting groove of the tool apron, a tooth pitch adjusting cushion block is arranged between every two adjacent blades, the exchange of the blades can be realized, the rapid assembly and debugging can be carried out, the thickness and the number of the tooth pitch adjusting cushion blocks can meet different processing requirements, so that the process range of the broach is improved, the blades and the tool apron are fixed by pressing gold through a blade pressing plate, the connection positioning precision is improved, and the process reliability of the tool is further improved. The device has a simple structure, and can be assembled by adjusting the cushion blocks with a proper amount of tooth pitch so as to reduce the abrasion of the cutter and reduce the processing cost. This connected mode makes broach compact structure, blade holder repeatedly usable, quick replacement and the damaged blade of sharpening to shorten broach manufacturing cycle, improve broaching efficiency, reduce broaching processing cost.
Description
Technical Field
The invention belongs to the field of machining tools, and particularly relates to a mechanically-clamped mortise broach device.
Background
The engine wheel disc is mostly made of titanium alloy, high-temperature alloy and other difficult-to-process materials. Due to the difficult processing characteristics of materials, high technical requirements on mortises and the like, most of the mortises of the current aeroengine wheel discs are formed by broaching through high-speed steel broaches. However, the broach has a complex structure and a long manufacturing period. In addition, high speed steel broaches are one-piece and are susceptible to damage and wear during broaching. This greatly limits the efficiency of tongue and groove broaching and increases the economic cost of tongue and groove broaching. The existing mechanical clamping type broach only considers the replaceability of the blade and neglects the actual requirement of processing to fix the position of the blade and neglects the manufacturability of the blade to design the positioning surface of the blade more complicated.
Disclosure of Invention
The invention aims to provide a mechanically-clamped tongue-and-groove broach device to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a machine presss from both sides formula tongue-and-groove broach device, including the blade holder, blade and tooth pitch regulation cushion, the mounting groove has been seted up on the blade holder, the mounting groove one end of blade holder is fixed with the location dog, be provided with a plurality of blades in the mounting groove of blade holder, the handle of a knife position of blade is in the mounting groove, be equipped with a tooth pitch regulation cushion between two adjacent blades, the other end of the mounting groove of blade holder is equipped with and presss from both sides tight dog, the cutting edge of blade is located the mounting groove up end outside of blade holder, tooth pitch regulation cushion up end is less than the minimum cutting edge place plane of blade, be equipped with the pressure shoulder in the handle of a knife portion of blade, the blade holder upper end is fixed.
Further, the width of the positioning stop block is not larger than that of the rear face of the blade.
Furthermore, the handle part of the blade is positioned in the mounting groove of the tool apron, and the side wall of the handle part of the blade is contacted with the wall of the mounting groove of the tool apron.
Furthermore, the included angle between the shoulder pressing plane of the blade handle part and the horizontal plane is more than 0 degree.
Furthermore, the contact surface of the blade pressing plate and the upper end face of the cutter holder is a plane, threaded holes are formed in the blade pressing plate and the cutter holder, and the blade pressing plate is fixed on the cutter holder through bolts.
Further, the location dog passes through the mounting groove one end of bolt fastening in the blade holder, and threaded hole is seted up to one side of location dog, and the through-hole of intercommunication mounting groove is seted up to the lateral wall of blade holder, adopts bolt fixed connection.
Further, the lower end of the pitch adjusting cushion block is in contact with the wall of the cutter holder mounting groove, and the contact surface of the pitch adjusting cushion block and the wall of the cutter holder mounting groove is a plane.
Furthermore, a threaded hole is formed in the side wall of the other end of the mounting groove of the tool apron, and a locking bolt is arranged in the threaded hole.
Furthermore, a groove is formed in the middle of the bottom of the mounting groove of the blade, and the distance between the bottom surface of the groove and the upper end surface of the groove is 0.5-1 mm.
Further, the upper end surface of the positioning block is lower than the plane of the lowest cutting edge of the blade.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the mechanically-clamped tongue-and-groove broach device, the mounting groove is formed in the tool apron, the positioning stop block is fixed at one end of the mounting groove of the tool apron, the plurality of blades are arranged in the mounting groove of the tool apron, the pitch adjusting cushion block is arranged between every two adjacent blades, the exchange of the blades can be realized, the blades can be quickly assembled and debugged, the thickness and the number of the pitch adjusting cushion block can meet different processing requirements, so that the process range of the broach is enlarged, the blades and the tool apron are fixed through the blade pressing plate, the connection positioning precision is improved, and the process reliability of the cutters is further improved. The device has a simple structure, and can be assembled by adjusting the cushion blocks with a proper amount of tooth pitch so as to reduce the abrasion of the cutter and reduce the processing cost.
Furthermore, the height of the upper end surface of the clamping stop block is not higher than the lowest height of the cutting edge part of the blade, so that machining interference is avoided, and the clamping reliability is improved.
Furthermore, the width of the positioning stop block is not larger than the structure of the width of the rear surface of the blade, so that the machining interference is avoided.
Furthermore, the handle part of the blade is positioned in the mounting groove of the cutter holder, and the side wall of the handle part of the blade is in contact with the wall of the mounting groove of the cutter holder, so that the stability of the cutter mounting is improved.
Furthermore, the included angle between the pressing shoulder plane of the blade handle part and the horizontal plane is larger than 0 degree, so that the blade pressing plate can be favorably pressed on the blade, and the blade is prevented from shaking.
Furthermore, a groove is formed in the middle of the bottom of the mounting groove of the blade, the distance between the bottom surface of the groove and the upper end surface of the groove is 0.5-1 mm, and the blade can be effectively prevented from being mounted, positioned and interfered.
Drawings
Fig. 1 is a schematic view of the overall structure of a broach according to an embodiment of the present invention.
FIG. 2 is a schematic view of a tool holder according to an embodiment of the present invention.
Fig. 3 is a schematic view of a blade structure in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a pitch adjusting pad in an embodiment of the invention.
In the figure: 1. the cutter comprises a clamping stop block, 2, a cutter holder, 3, a blade, 4, a tooth pitch adjusting cushion block, 5, a blade pressing plate, 6, a positioning stop block, 7 and a cutter handle part.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 to 4, a machine clamp type tongue-and-groove broach device, including blade holder 2, blade 3 and tooth pitch adjusting cushion block 4, the mounting groove has been seted up on blade holder 2, mounting groove one end of blade holder 2 is fixed with location dog 6, be provided with a plurality of blades 3 in the mounting groove of blade holder 2, blade portion 7 of blade 3 is located the mounting groove, be equipped with a tooth pitch adjusting cushion block 4 between two adjacent blade 3, the other end of the mounting groove of blade holder 2 is equipped with and presss from both sides tight dog 1, be used for a plurality of blades 3 of centre gripping, the cutting edge of blade 3 is located the mounting groove up end outside of blade holder 2, tooth pitch adjusting cushion block 4 up end is less than the minimum cutting edge place plane of blade 3, be equipped with the shoulder on blade holder portion 7 of blade 3, blade holder 2 upper end is fixed with blade clamp plate 5, the lower terminal surface of blade clamp plate. The width of the positioning block 6 is not larger than the width structure of the back of the blade.
As shown in fig. 2, the cross section of the mounting groove on the tool holder 2 is rectangular along the direction perpendicular to the length direction of the groove, and the cross section of the lower section of the handle portion of the blade 3 is similar to that of the rectangular groove, that is, the handle portion of the blade 3 is located in the mounting groove of the tool holder 2, and the side wall of the handle portion of the blade 3 is in contact with the wall of the mounting groove of the tool holder 2. The mounting groove of the cutter holder 2 limits the side surface of the blade 3, the blade 3 moves along the length direction of the mounting groove of the cutter holder 2, or moves along the up-and-down direction of the mounting groove of the upper cutter holder 2, and the blade pressing plate 5 is adopted to compress the blade 3 in the mounting groove fixed on the cutter holder 2, so that the blade can be effectively prevented from shaking.
As shown in fig. 3, the included angle α between the shoulder pressing plane of the handle portion of the blade 3 and the horizontal plane is greater than 0 degree, and the inclined plane is in inclined contact with the blade pressing plate 5, so that the fixed blade 3 can be effectively pressed, and the blade is prevented from shaking. The blade 3 is of a symmetrical structure, the two sides of the blade 3 are respectively provided with a pressing shoulder, and the pressing shoulders on the two sides are respectively pressed and fixed through the two blade pressing plates 5. The contact surface of the blade pressing plate 5 and the upper end surface of the tool apron 2 is a plane, threaded holes are formed in the blade pressing plate 5 and the tool apron 2, and the blade pressing plate 5 is fixed on the tool apron through bolts.
As shown in fig. 4, the pitch adjusting pad 4 is provided with a pressing shoulder, an included angle β between a pressing shoulder plane on the pitch adjusting pad 4 and a horizontal plane is greater than 0 degree, the height of the pressing shoulder on the pitch adjusting pad 4 is not higher than that of the pressing shoulder on the cutter handle portion, and when the heights and the cross sections of the pressing shoulder on the pitch adjusting pad 4 and the pressing shoulder on the cutter handle portion are completely the same, the pressing state of the blade pressing plate 5 is the best. The lower end of the pitch adjusting cushion block 4 is in contact with the groove wall of the mounting groove of the tool apron 2, the contact surface of the pitch adjusting cushion block 4 and the groove wall of the mounting groove of the tool apron 2 is a plane, and the blades 3 and the pitch adjusting cushion block 4 are sequentially and alternately distributed in the mounting groove of the tool apron.
The locating stop block 6 is fixed at one end of the mounting groove of the tool apron 2 through a bolt, a threaded hole is formed in one side of the locating stop block 6, a through hole communicated with the mounting groove is formed in the side wall of the tool apron 2, the bolt penetrates through the through hole to be connected with the threaded hole of the locating stop block 6, and the locating stop block is installed and fixed. The upper end surface of the positioning block 6 is lower than the plane of the lowest cutting edge of the blade 3.
The other end lateral wall of the mounting groove of blade holder 2 is seted up threaded hole, and threaded hole is equipped with locking bolt for tight dog 1, will press from both sides tight dog 1 and push into the mounting groove of blade holder 2, it is tight with blade 3 and tooth pitch adjusting cushion 4 in the mounting groove, then adopt locking bolt locking to fix.
As shown in figure 2, a groove is arranged in the middle of the bottom of the mounting groove of the blade, so that over-positioning is avoided, and the distance between the bottom surface of the groove and the upper end surface of the groove is 0.5-1 mm. The side surfaces and the ground surface of the mounting groove of the blade are positioning surfaces of the blade 3, the bottom surface and each side surface of the blade 3 are both positioning surfaces, and transverse positioning is realized through the matching of the bottom surface and the side surfaces in the width direction with the plane of the mounting groove of the tool apron 2; the back of the blade 3 is matched with the side surface of the blade positioning stop 6 to realize Z-direction positioning.
And sequentially installing the blade 3 and the pitch adjusting cushion block 4 into the installation of the tool apron according to the positioning and processing requirements. If the number of the installed cutter teeth meets the technological requirements and the cutter holder installation groove still has a vacant cutter position, the cutter holder installation groove can be assembled in a mode of installing the tooth pitch adjusting cushion block.
According to the mechanically-clamped tongue-and-groove broach device, the broach mounting structure is formed by the tool apron 2, the blades 3 and the pitch adjusting cushion blocks 4, a plurality of blades can be mounted in the broach tool apron, the blades can be interchanged and can be rapidly assembled and debugged, and the thickness and the number of the pitch adjusting cushion blocks can meet different processing requirements, so that the process range of the broach is widened. The positioning surface between the blade and the cutter holder adopts a planar structure with good manufacturability. The threaded connection adopts a fine threaded connection mode, so that the connection positioning precision is improved, and the process reliability of the cutter is further improved. The positioning stop block of the cutter holder is made of high-speed steel materials and the height of the positioning stop block is lower than that of the pitch adjusting cushion block, so that the toughness of the cutter is improved. The width of the positioning stop block of the cutter holder is not more than the width of the rear surface of the blade, so that machining interference is avoided. The height of the upper end surface of the clamping stop block is not higher than the lowest height of the cutting edge part of the blade, so that machining interference is avoided, and the clamping reliability is improved. If the installation blade meets the processing requirement and the cutter position is still left, the installation blade can be assembled through a proper amount of tooth pitch adjusting cushion blocks so as to reduce the abrasion of the cutter and the processing cost.
The insert of the present invention may be made of a cemented carbide material, such as cemented carbide, ceramic, diamond, or cubic boron nitride, and has a rake angle, a relief angle, and a side relief angle. The material is more wear resistant than the commonly used high speed steel materials to improve the finished surface integrity of the mortise and to extend the useful life of the broach.
It is to be understood that the foregoing shows and describes only the technical concept and features of the present invention, and that it is intended to enable one skilled in the art to make and use the invention without limitation to the above examples, and that various modifications and changes may be made without departing from the spirit and scope of the invention, and it is intended that all such modifications, changes and variations be included within the scope of the invention as claimed.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629786.5A CN112846383A (en) | 2020-12-30 | 2020-12-30 | Machine presss from both sides formula tongue-and-groove broach device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629786.5A CN112846383A (en) | 2020-12-30 | 2020-12-30 | Machine presss from both sides formula tongue-and-groove broach device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112846383A true CN112846383A (en) | 2021-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011629786.5A Pending CN112846383A (en) | 2020-12-30 | 2020-12-30 | Machine presss from both sides formula tongue-and-groove broach device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112846383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378362A (en) * | 2021-12-13 | 2022-04-22 | 东方电气集团东方汽轮机有限公司 | Broaching process of gas turbine rotor disc mortise |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2122177A5 (en) * | 1971-01-12 | 1972-08-25 | Cincinnati Milacron Inc | |
| US4243347A (en) * | 1979-02-28 | 1981-01-06 | General Electric Company | Broaching assembly having disposable carbide inserts |
| CN86205192U (en) * | 1986-07-19 | 1987-12-23 | 国营新艺机械厂 | Mechanically inserted carbide broach with precomputed deformation |
| CN2056620U (en) * | 1989-08-10 | 1990-05-02 | 李战君 | Profile combined chain scraping out cutter |
| CN2302860Y (en) * | 1997-02-24 | 1999-01-06 | 余翔 | Mechanically clamping and self-guiding broaching tool for cutting keyway |
| GB2365376A (en) * | 2000-07-28 | 2002-02-20 | Rolls Royce Plc | Methods and apparatus for performing broaching operations. |
| US20020182017A1 (en) * | 2001-06-04 | 2002-12-05 | Miller Raymond T. | Broach carrier |
| CN2724892Y (en) * | 2004-07-06 | 2005-09-14 | 施能嘉 | Tool holders for combined tool blocks |
| CN1745945A (en) * | 2005-09-21 | 2006-03-15 | 鲁宏 | Assembled broach |
| US20090175697A1 (en) * | 2001-07-27 | 2009-07-09 | Manoir Industries, Inc. | Centrifugally-cast tube and related method and apparatus for making same |
| JP2015030077A (en) * | 2013-08-06 | 2015-02-16 | 株式会社不二越 | Throwaway type cutting tool |
| CN105215467A (en) * | 2015-11-04 | 2016-01-06 | 恒锋工具股份有限公司 | A kind of three sword carbide alloy finish draw blades |
| CN205764180U (en) * | 2016-07-01 | 2016-12-07 | 陕西理工大学 | Combined flat surface broaching tool |
| CN110524048A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of On Combined Broach |
-
2020
- 2020-12-30 CN CN202011629786.5A patent/CN112846383A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2122177A5 (en) * | 1971-01-12 | 1972-08-25 | Cincinnati Milacron Inc | |
| US4243347A (en) * | 1979-02-28 | 1981-01-06 | General Electric Company | Broaching assembly having disposable carbide inserts |
| CN86205192U (en) * | 1986-07-19 | 1987-12-23 | 国营新艺机械厂 | Mechanically inserted carbide broach with precomputed deformation |
| CN2056620U (en) * | 1989-08-10 | 1990-05-02 | 李战君 | Profile combined chain scraping out cutter |
| CN2302860Y (en) * | 1997-02-24 | 1999-01-06 | 余翔 | Mechanically clamping and self-guiding broaching tool for cutting keyway |
| GB2365376A (en) * | 2000-07-28 | 2002-02-20 | Rolls Royce Plc | Methods and apparatus for performing broaching operations. |
| US20020182017A1 (en) * | 2001-06-04 | 2002-12-05 | Miller Raymond T. | Broach carrier |
| US20090175697A1 (en) * | 2001-07-27 | 2009-07-09 | Manoir Industries, Inc. | Centrifugally-cast tube and related method and apparatus for making same |
| CN2724892Y (en) * | 2004-07-06 | 2005-09-14 | 施能嘉 | Tool holders for combined tool blocks |
| CN1745945A (en) * | 2005-09-21 | 2006-03-15 | 鲁宏 | Assembled broach |
| JP2015030077A (en) * | 2013-08-06 | 2015-02-16 | 株式会社不二越 | Throwaway type cutting tool |
| CN105215467A (en) * | 2015-11-04 | 2016-01-06 | 恒锋工具股份有限公司 | A kind of three sword carbide alloy finish draw blades |
| CN205764180U (en) * | 2016-07-01 | 2016-12-07 | 陕西理工大学 | Combined flat surface broaching tool |
| CN110524048A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of On Combined Broach |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378362A (en) * | 2021-12-13 | 2022-04-22 | 东方电气集团东方汽轮机有限公司 | Broaching process of gas turbine rotor disc mortise |
| CN114378362B (en) * | 2021-12-13 | 2023-08-18 | 东方电气集团东方汽轮机有限公司 | Broaching process for mortises of rotor disk of gas turbine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |
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| RJ01 | Rejection of invention patent application after publication |