• 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 method which is the subject of this invention concerns the rapid clamping and the holding in position of thin tubes in order to allow them to be machined by limiting their deformation. It allows the quick change of the holding and clamping system in case of change of section of the tube to be machined.
    公开号:FR3020295A1
    申请号:FR1401052
    申请日:2014-04-29
    公开日:2015-10-30
    发明作者:Stephane Cocher
    申请人:Stephane Cocher；
    IPC主号:
    专利说明:

    [0001] The method of the invention allows rapid clamping and holding thin tubes to perform machining operations such as multiple drilling of cylindrical or oblong holes and operations such as tube cutting or deburring. These thin tubes have the particularity of being very flexible diametrically and being able to deform very easily during their maintenance; these tubes can be obtained from metal sheets welded at their ends or from extruded metal. They can be made of steel of any shade or even stainless, titanium, aluminum, wood, composite or plastic. This process allows the machining of tubes of different sections with great accuracy without damaging their initial characteristics such as their geometry or surface condition. It should be noted that these tubes may have square, circular or any other geometry, their main characteristic being to have thin walls and easily deformable. Currently, thin tubes are drilled with appropriately shaped forests of special steel or solid carbide or grinding-type tools, this operation is possible by inserting inside the tube a solid tube or a handle which plays the role martyr. Often the drilling or more generally machining of the tubes are performed manually using a drilling template as a tube of larger section concentric to the tube to be machined and equipped with drilling guns. These artisanal processes have the advantage of a low initial investment but a random accuracy and repeatability, insufficient for modern industrial applications. Thin tubes can also be wrapped by half-shell jaws that hold the tube on either side of the hole to be drilled. Depending on the number of holes, the number of tubes to be machined, the position of the holes and the available budget, the positioning of the tube is automated. In the case of a large series with different sections of tubes and diameters of different holes to drill, it is not profitable to manually change the tools namely mainly the jaws at each change in tube size. Hence the interest of the proposed method. The invention is composed of cylindrical jaws (6) Figure 3 type barrels which will be called barrels later, cylindrical. This barrel is angularly positioned on a barrel holder (19) about an axis (3) FIG. 6. The barrel holder (19) FIG. 6 comprises a square portion with a reference vertical face and a reference horizontal face which fits in the 2 hollow pins (1) and (16) Figure 1, these pins have a bore of complementary shape. These pins that allow the orientation and clamping of the barrel holders are part of a patented mechanism FR 2779676 A1. Each barrel holder that is fitted into the spindle is held in position and locked in it. screw aid (5) according to FR 2884445 A1. Each barrel (6) consists of a central portion pivotally connected to the axis of the barrel holder (3). The outer portion of the barrel is composed of moving parts radially in slide connection and normal to the axis of rotation of the barrel. Each cylinder has a number of bores respectively of complementary geometries to the tubes to be machined which will allow the positioning of the thin tubes on only one semicircle which can be considered as a half-shell; the other half-shell is part of a movable part (10) or (11) or (12) or (13) or (14) or (15) or (17) or (18) figure 4, pushed by a flat clamping cylinder (9) and guided by a complementary shape cut in the cylinder. Each barrel has a number of bores compatible with the diameter of the barrel so that the tubes can pass through the free passage of the dividers pins (1) and (16).
    [0002] Figure (1) shows the two dividers (2) and (8) facing each other with the pins (1) and (16) equipped with their barrels (6) which hold the tube for the machining operation. Figure (2) shows the inside of the hollow spindle (1).
    [0003] Figure (3) shows a barrel (6) alone with different diameters of tubes. Figure (4) shows the assembly mounted in front view. Figure (5) shows a barrel holder (19) equipped with its barrel (6) and the clamping cylinder (9) ready to be mounted in its spindle. Figure (6) shows the barrel holder (19) alone ready to be mounted in the spindle. The embodiment shown in the diagrams concerns circular section tubes in order to simplify the diagrams.
    [0004] In reality, the tubes may have other sections that may be rectangular, square, hexagonal or of any geometry such as angles. With reference to these drawings, obtaining the geometries of drilling and removal of material in the tubes is obtained with a machining spindle. In reality these geometries can also be obtained by replacing the machining spindle by a water jet head or a laser head or a plasma torch or a combination of these different material removal solutions. In the same way it is possible to replace the main machining spindle or to add to this main spindle an automatic screwdriver allowing to screw self-drilling or non-self drilling screws automatically. With reference to these drawings, depending on the diameter of the tube to be clamped, it is possible to equip the barrel holders of the corresponding barrel and to mount this assembly manually in the appropriate pins and to block them by the screws (5); these 2 barrels will be face to face in the 2 pins according to an angular reference start position and locked relative to the barrel holder. After the introduction of the tube following an operation that can be automatic, the clamping of the half-shells is obtained by the action of the flat jack (9) which bears on its barrel holder (19) allowing the positioning and clamping of the tube . Numerical programming supports spindle movements and tools for machining operations. This device according to the invention is intended for clamping thin tubes on a numerically controlled machine for drilling, machining and sawing operations all around the periphery of the tube. This device is suitable for machining between the two divisors (2) and (8) facing each other and whose axial relative positions are determined by numerical control. Maintaining the tube over its entire periphery makes it possible to make a length of the tube directly to the cutting tool without the need for a saw. It is possible to cut the tube by combining the rotational movement of this tube which rotates about the axis of rotation of the divider and the translational movement of a rotating cutting tool placed in the main spindle, normal to the axis of the tube.
    [0005] It is possible to quickly change the section of the tube to be machined by first loosening the clamping cylinder (9) of the barrel holder (19). The choice of keeping the cylinder in position in the new desired angular position is obtained with solutions already known as solutions such as spring balls on the barrel holder and positioning hole in the barrel.
    [0006] Another solution is to engage the barrel holder on the barrel. The operation of positioning the cylinder in the angular position is possible either manually or using a handling robot or through the movement of the main spindle on which a specific tool has been spindled. A particular embodiment is to use a screwdriver-shaped tool in the main spindle; the rotational movement of the main spindle allows via the screwdriver to drive so rotate a gear connected to the barrel around another gear connected to the barrel holder. Thus according to the number of laps made by the main spindle, it is possible to automatically choose, thanks to the numerical control, the new section of sections to be maintained and clamped with a very good angular precision. Depending on the available budget and the allowed time for changing the angular position of the barrels, one or other of the angular position change and position retention solutions will be used.
    权利要求:
    Claims (3)
    [0001]
    CLAIMS1-Clamping device for thin tubes of any metallic material, plastic or wood or composite for machining requiring drilling, countersinking, tapping, milling or sawing operations mounted in the pins of a machining center for bars, this device comprises a cylindrical cylinder which is mounted on a support, which is positioned and locked in one of the 2 pins (1) or (16) characterized in that the cylinder (6) comprises several machining forming half-shells.
    [0002]
    2-Device according to claim 1 characterized in that each outer half-shell is a movable part in sliding connection in the inner part of the barrel which can be pushed by a clamping cylinder (9) of the barrel holder (19).
    [0003]
    3-Device according to claims 1 and 2 characterized in that each barrel (6) comprises a number of bores compatible with the dimensions of the free passage of the dividers (1) and (16).
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    FR3020295B1|2016-12-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4892993A|1988-05-19|1990-01-09|Aluminum Company Of America|Welding system for hollow thin walled members|
    FR2779676A1|1998-06-10|1999-12-17|Michel Pioch|Device for profile positioning for machining|
    FR2884445A1|2005-04-13|2006-10-20|Michel Pioch Sa Sa|Quick-change mechanism for jaws of machine tool used for machining variable diameter bars has fixed and moving jaws in single unit with guide columns|CN106736730A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Main shaft groove milling Set and Positioning frock|
    CN106736727A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Gear shaft groove milling positioning and clamping device|
    CN106736728A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Main shaft groove milling positioning clamping device|
    CN106736726A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Gear shaft groove milling Set and Positioning frock|
    CN106736725A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Splined shaft groove milling clamping and positioning device|
    CN106736729A|2015-11-19|2017-05-31|綦江永跃齿轮有限公司|Splined shaft groove milling clamping tooling|
    CN110625141A|2019-10-10|2019-12-31|广州市长亿数控机床有限公司|Pipe material precision machining device for turning sealing element|
    CN112846860A|2021-02-22|2021-05-28|四川明日宇航工业有限责任公司|Thin-wall cylinder part machining tool and machining method|
    CN108161529B|2017-12-18|2020-04-10|大连德迈仕精密科技股份有限公司|Automatic clamp for processing shaft parts|
    法律状态:
    2015-04-13| PLFP| Fee payment|Year of fee payment: 2 |
    2015-10-30| PLSC| Search report ready|Effective date: 20151030 |
    2016-04-15| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-24| PLFP| Fee payment|Year of fee payment: 4 |
    2018-04-17| PLFP| Fee payment|Year of fee payment: 5 |
    2019-04-23| PLFP| Fee payment|Year of fee payment: 6 |
    2020-05-13| PLFP| Fee payment|Year of fee payment: 8 |
    2021-05-11| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1401052A|FR3020295B1|2014-04-29|2014-04-29|CLAMPING AND HOLDING SYSTEM IN THE POSITION OF THIN PIPES AND RAPID CHANGE SOLUTION OF THIS CLAMPING SYSTEM IN THE CASE OF CHANGING THE THIN TUBE SECTION|FR1401052A| FR3020295B1|2014-04-29|2014-04-29|CLAMPING AND HOLDING SYSTEM IN THE POSITION OF THIN PIPES AND RAPID CHANGE SOLUTION OF THIS CLAMPING SYSTEM IN THE CASE OF CHANGING THE THIN TUBE SECTION|
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