• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention provides an eccentrically powerful rear machining cutting tool, which comprises a crown, a clamping bracket for clamping in a numerically controlled machine tool by means of a fastening clamp and a milling bar for connecting the crown to the clamping bracket. The central axis of rotation of the crown deviates from and is parallel to the central axis of the clamp. The radial section of the milling bar is an elliptical surface. The back-machining cutting tool is applicable to a numerically controlled machine tool, has high rigidity and can implement continuous, automatic machining, whereby an efficient improvement of the efficiency and quality of deep hole machining takes place and a practical and reliable machining is achieved, simple manufacturing and low manufacturing costs. . The eccentric powerful rear machining tool of the present invention can implement machining processes for the plane at the rear surface of a rear face mill, the bottom surface of a deep hole in a rear recess, the bevel at the back surface of a rear machining hole, the rear side and the chamfered surface and the chamfered hole at the back surface of a backing machining hole.
    公开号:SE1400128A1
    申请号:SE1400128
    申请日:2012-09-21
    公开日:2014-03-11
    发明作者:Changlin Yu；Bokai Jin
    申请人:
    IPC主号:
    专利说明:

    15 20 25 30 35 2 the cutting force and the insert sometimes get stuck in steel blanks during machining, which makes it impossible for the insert to attach to the insert, which can cause damage to the cutting tool, the workpiece and the machine tool.
    SUMMARY The technical problem to be solved with the present invention is to provide an eccentrically powerful / strong back-machining cutting tool to eliminate the shortcomings of the prior art. The back-machining cutting tool effectively increases the machining efficiency in a back-machining mode, achieves a convenient and reliable machining and requires low manufacturing cost.
    To solve the above technical problems, the technical solution embodied in the present invention is as follows: A powerful eccentric back-machining cutting tool comprises a crown, a clamping bracket for clamping in a numerically controlled tool machine and a milling bar by means of a mounting clamp. which connects the crown to the clamp bracket. The central axis of rotation of the crown deviates from and is parallel to the central axis of the clamp.
    The outer edge of an elliptical surface is formed by a first arc drawn with the central axis of the clamping bracket as the center and a second arc drawn with the central axis of rotation of the crown as the center.
    In any embodiment of the present invention, the radial sectional shape of the crown constitutes a residual portion of a cutout of a triangle-like sector area from a circle drawn with a diameter shorter than the inner diameter of a through hole.
    An installation socket for a insert is arranged at a first straight side of the residual part after the triangular sector area has been cut out from the crown. A through hole, the axis of which is perpendicular to the recess bottom surface of the insert installation recess, is made in the crown. A rotatable insert is installed on the inside of the insert socket for the insert. The rotatable insert is fixed to the crown by means of a screw that goes through a through hole in the rotating insert.
    In any embodiment of the present invention, the radial sectional shape is a residue by cutting a triangular sector area of a circle drawn with a diameter shorter than the inner diameter of a through hole. An installation recess for a insert is arranged at a first straight side of the residual part after a triangular sector has been cut out of the crown. A rotatable insert is installed on the inside of the installation socket for the insert via a pressure plate that is attached to the crown.
    In any embodiment of the present invention, the edge surface of the rotatable insert, the rotatable center axis of the crown and the central axis of the clamp bracket lie in the same plane.
    In any embodiment of the present invention, taking into account milling concessions which occur during machining and the requirements for extended plane smoothness of a machined surface and machining of an inclined plane, an angle d between the extended line of the rotatable insert edge surface and the center of the crown axis of rotation to 85 - 95 degrees.
    The construction of the residual part after the triangular sector area has been cut out is determined in accordance with the shape and size of the insert, as long as the installation requirements are met.
    The milling boom is connected to a clamping segment via a connecting segment coaxial with the clamping bracket and has a diameter that is smaller than the inner diameter of the machined hole diameter.
    The front end of the crown is sloping in order to evenly guide the entire handlebar in a hole.
    In any embodiment of the present invention, the radial section of the milling bar is an elliptical surface. The radial section of the milling bar is the maximum section that the machined hole diameter allows the milling bar to turn.
    By introducing the above technical solution, the present invention has, compared to the prior art, the following advantageous effects: 1. In the present invention, based on the requirement of the setting precision of keeping the gap between a milling bar and a workpiece through hole at about 0 , 25 mm in a conventional numerically controlled machine tool, the rotatable central axis of rotation of a crown and the central axis of a clamping bracket eccentrically located and the radial section of the milling bar is designed to be an elliptical-like surface, in order to maximize The area of the radial section of the milling bar while preventing the cutting tool from colliding with the workpiece during the eccentric insertion into and the discharge from the through hole of the workpiece to be machined, to increase the rigidity of the milling bar by using a limited space in an ingenious manner. , to guarantee the quality of reverse face milling of a deep hole, thereby giving carrying out the machining of a rear-facing deep hole and nut installation from the front by means of a disposable attachment, which guarantees the quality and at the same time considerably increases the machining efficiency. 2. The present invention introduces a rotatable insert to save welding time and costs of a prior art welded insert. In the present invention, taking into account the milling yields which occur during machining, and the requirements for extended plane smoothness of a machining surface and machining an inclined plane, there is an angle oi between the extended line of the rotatable insert edge surface and the crown central axis of rotation which amounts to 85 - 95 degrees. The eccentric powerful rear machining tool of the present invention can implement machining processes for the plane at the rear surface of a rear face mill, the bottom surface of a deep hole in a rear recess, the chamfer at the rear surface of a rear side machining hole, the the surface of a rear machining hole and the chamfered surface and the chamfered hole at the rear surface of a rear machining hole.
    The present invention has a simple structure, small machining difficulties and low manufacturing costs and is applicable to mass machining and thus reduces machining costs.
    BRIEF DESCRIPTION OF THE DRAWINGS The present description will be better understood from the detailed description given below for illustrative purposes only and thus is not limiting of the present contents and in which: Fig. 1 shows a schematic structural view of an eccentric strong back-machining cutting tool according to the present invention, Fig. 2 shows a sectional view along AA in Fig. 1, Fig. 3 shows a sectional view along BB in Fig. 1, Fig. 4 shows a view in the C-direction according to Fig. 1, Fig. 5 shows a view in the K-direction according to Fig. 1, Fig. 6 shows a schematic view of an initial position of a rear plane in a hole in a chamfering workpiece on an eccentrically strong rear machining cutting tool according to the present invention, Fig. 7 shows a view in the A-direction according to Fig. 6, Fig. 8 shows a schematic view of a machining position for a back plane in a hole in a cutting workpiece on an eccentrically strong back machining cutting tool according to the present invention and Fig. 9 shows a view in the A-direction according to Fig. 8.
    DETAILED DESCRIPTION The present invention is further described in connection with the following embodiments. The embodiments are used solely to illustrate the present invention rather than to limit the present invention.
    Referring to Fig. 1, it can be seen that an eccentrically powerful rear machining tool according to the present invention comprises a crown 100 and a clamp bracket 200 to be clamped by means of a clamp in a numerically controlled machine tool.
    The clamp bracket 200 is sequentially connected to the crown 100 via a connecting segment 300 and a milling bar 400. The connecting segment 300 and the clamping bracket 200 are arranged coaxially. The outer diameter of the connecting segment 300 is determined by the machined hole diameter as long as it is smaller than the machined hole diameter. The central axis of rotation 110 of the crown 100 deviates from and is parallel to the central axis 210 of the clamp 200.
    In combination with Fig. 3, it can be seen that the radial section of the milling bar 400 is an elliptical surface. The outer edge of the elliptical surface is formed by an arc 220 projecting with the central axis 210 of the clamp bracket 200 as the center and an arc 230 projecting with the central axis of rotation 110 of the crown 100 as the center. The radial section of the milling bar 400 is the maximum section that the diameter of the machined hole allows the milling bar to rotate. Of course, a practical machining process is not limited thereby either, as long as the milling bar 400 has sufficient rigidity, even if the radial section of the milling bar 400 is smaller than the maximum section that the diameter of the machined hole allows the milling bar to rotate. In combination with Fig. 2 it can be seen that the radial sectional shape of the crown 100 is a residual part 130 obtained by cutting a triangle-like sector area 120 from a circular surface which is drawn up with a diameter D which is smaller than the interior of the through hole 110. diameter. The front end of the crown 100 is sloping. An installation recess 132 for the insert is provided on the straight side 131 of the residue 130 after the triangular sector area 120 is cut out of the crown 100. A through hole 140, the axis of which is perpendicular to the bottom surface of the recess in the installation recess 132 for the insert, is made in the crown. 100. In combination with Fig. 4 and Fig. 5 it can be seen that a rotatable insert 500 is installed inside the installation recess 132 for the crown 100. The rotatable insert 500 may be fixed to the crown 100 via a screw 510 passing through the rotatable insert 500 and the through hole 140 and a nut.
    Of course, a pressure plate shape or other can also be inserted in and for installation of the insert in the installation recess.
    The edge surface of the rotatable insert 500, the central axis of rotation 110 of the crown and the central axis 210 of the milling arm lie in the same plane. Taking into account the milling yields that occur during machining and the requirements for extended plane smoothness of a machining surface as well as machining of an inclined plane, an angle oi between the extended line 521 of the rotating insert 500 edge surface 520 and the central axis of rotation of the crown to 85 - 95 degrees.
    To enable the crown 100 to pass through the machining hole, the maximum diameter of the crown 100 should be smaller than the inner diameter of the machined hole.
    The straight side 133 of the residual part 130 after the triangular sector area 120 has been cut out is perpendicular to the straight side 131 and is connected thereto via a transition arc 134. The straight side 131, the central axis of rotation 110 of the crown 10O and the center of the clamping bracket The central shaft 210 lies on the same plane 111, to ensure that the edge surface of the rotatable insert 500, the central axis of rotation 110 of the crown and the central shaft 210 of the clamping bracket lie on the same plane. The space left between the straight side 133 and the straight side 131 is required only so as not to affect the clamping of the insert.
    Referring to Figs. 6 and 7, it is seen that when a face milling needs to be performed at the bottom surface 621 of the deep hole 620 in the hole 610 of the workpiece 600, the central shaft 210 of the clamp is first placed to coincide with the shaft of the mandrel and the central shaft 630 of the hole 610 and the deep hole 620. At this time, the crown 100 is moved to allow the crown 100 to be displaced in the direction of the central shaft 210 of the clamp with the connecting line 410 between the central shaft 210 of the clamp and the central axis of rotation 110 of the crown so that the central axis of rotation 110 coincides with the central axis 630 of the hole 610 and the deep hole 620. Thereafter, the crown 100 and the milling bar 400 are allowed to pass through the holes 610 of the workpiece 600 and the crown 100 is allowed to enter the deep hole 620.
    Referring to Figs. 8 and 9, it can be seen that the crown 100 is displaced in the direction of the central axis of rotation 110 of the crown along the connecting line 410 between the central axis of the clamp. 210 and the central axis of rotation 110 of the crown, so that the central axis 210 of the clamping bracket coincides with the central axis of the mandrel. Starting takes place for backward-facing machining of the bottom surface 621 of the deep hole 620.
    The present invention is not limited to the implementations set forth above. Various modifications or variants of the present invention which do not depart from the spirit and scope of the present invention and which fall within the scope of the claims as well as equivalent technical embodiments are also to be considered as covered by the present invention.
    权利要求:
    Claims (10)
    [1]
    Eccentrically powerful rear-machining cutting tool comprising a crown, a clamping bracket for clamping in a numerically controlled machine tool by means of a fastening clamp and a milling bar for connecting the crown to the clamping bracket, the crown's central axis of rotation deviating from and parallel to central axis.
    [2]
    An eccentrically powerful rear machining cutting tool according to claim 1, wherein the outer edge of an elliptical surface is formed by a first arc drawn with the central axis of the clamping bracket as the center and a second arc drawn with the central axis of rotation of the crown as the center.
    [3]
    An eccentrically powerful rear machining cutting tool according to claim 1, wherein the radial sectional shape of the crown forms a remnant of a cut-out of a triangle-like sector area from a circle drawn with a diameter shorter than the inner diameter of a through hole, an installation recess for a inserts are arranged at a first straight side of the residual part after the triangular sector area has been cut out of the crown, a through hole, the axis of which is perpendicular to the recess bottom surface of the insert installation recess, is made in the crown, a rotating crown is installed on the inside of the insert the installation recess and the rotating insert are attached to the crown by means of a screw that goes through a through hole in the rotating insert.
    [4]
    An eccentrically powerful rear machining cutting tool according to claim 1, wherein the radial sectional shape of the crown is a residual part by cutting a triangular sector area of a circle drawn with a diameter shorter than the inner diameter of a through hole, an installation recess for a cutting insert is arranged at a first straight side of the residual part after a triangular sector has been cut out of the crown and a rotatable insert is installed on the inside of the installation recess for the insert via a pressure plate which is attached to the crown.
    [5]
    An eccentrically powerful rear machining cutting tool according to claim 1, wherein the edge surface of the rotatable insert, the rotatable center axis of the crown and the central axis of the clamping bracket lie in the same plane.
    [6]
    An eccentrically powerful rear machining cutting tool according to claim 5, wherein an angle o, which is present between the extended line of the edge surface of the rotatable insert and the central axis of rotation of the crown, amounts to 85-95 degrees. 10 15 9
    [7]
    An eccentrically powerful rear machining cutting tool according to claim 1, wherein the construction of the residual part after the triangular sector area has been cut out is determined in accordance with the shape and size of the insert, as long as the installation requirements are met.
    [8]
    The eccentrically powerful rear machining cutting tool according to claim 1, wherein the milling bar is connected to a clamping segment via a connecting segment coaxial with the clamping bracket and has a diameter smaller than the inner diameter of the machined hole diameter.
    [9]
    The eccentrically powerful rear machining cutting tool of claim 1, wherein the front end of the crown is inclined to evenly guide the entire guide rod into a hole.
    [10]
    10. 1 - 9, where the radial section of the milling bar is an elliptical surface and the radial section of the milling bar.
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    同族专利:
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    JP2014527919A|2014-10-23|
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    引用文献:
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    CH438881A|1965-11-15|1967-06-30|Bbc Brown Boveri & Cie|Device for back milling or countersinking boreholes|
    JPS6031862Y2|1981-04-13|1985-09-24|
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    US4590827A|1984-05-07|1986-05-27|Vanamatic Company|Recess tool holder|
    JPS6165706A|1984-09-06|1986-04-04|Hitachi Constr Mach Co Ltd|Cutting tool|
    JP2670082B2|1988-05-13|1997-10-29|株式会社東原工業所|Turning tool|
    DE19951658A1|1999-10-27|2001-05-10|Wohlhaupter Gmbh|Tool holder|
    CN201076934Y|2007-09-28|2008-06-25|浙江欣兴工具有限公司|Integral anti-tangential end-face countersink drill|
    CN101850428B|2010-03-19|2011-12-07|平高集团有限公司|reverse boring cutter|
    CN202239821U|2011-09-27|2012-05-30|上海宏功机械科技有限公司|Eccentric powerful counter-scrape counter-boring combined tool|CN202239821U|2011-09-27|2012-05-30|上海宏功机械科技有限公司|Eccentric powerful counter-scrape counter-boring combined tool|
    CN104308213A|2014-10-16|2015-01-28|贵州航天红光机械制造有限公司|Method for machining counter bore in reverse side|
    DE102015016277A1|2015-12-16|2017-06-22|Heule Werkzeug Ag|Method for deburring intersecting bore edges and tool for performing the method|
    FR3049479B1|2016-03-29|2018-09-21|Arianegroup Sas|MILLING TOOL FOR MAKING A FRESH, TURNING MACHINE AND METHOD FOR PRODUCING A FRESH|
    CN108250302A|2016-12-29|2018-07-06|天津天锐生物科技有限公司|A kind of multifunctional protein|
    CN107414111A|2017-08-22|2017-12-01|永嘉县信诚科技服务有限公司|Novel cutting device|
    CN107866595B|2017-11-16|2019-07-30|唐山春潮汽车零部件股份有限公司|One kind is counter to scrape cutter and preparation method thereof and operating method|
    CN108971519A|2018-09-18|2018-12-11|中船动力有限公司|Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method|
    CN110355400A|2019-07-26|2019-10-22|苏州网宏自动化设备有限公司|A kind of integrated machine of multistation spot-facing of valve|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN 201120373621|CN202239821U|2011-09-27|2011-09-27|Eccentric powerful counter-scrape counter-boring combined tool|
    PCT/CN2012/001293|WO2013044589A1|2011-09-27|2012-09-21|Eccentric strong reverse machining tool|
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