• 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:
    A process for dressing a single or multiple-grooved worm or threaded workpiece by a single or multiple-grooved worm or threaded dressing tool includes the turning of the workpiece and tool with the dressing tool in a comb-type contact with the workpiece. By using an additional axial relative movement between the dressing tool and the workpiece, determined by the radial positioning and return movements, the contact points are displaced such that the desired grinding profile is produced on the workpiece. Since the entire surface area of the instantaneous contact points is significantly smaller than the entire profile area of the workpiece, the cutting forces which occur are relatively small, so that high dressing speeds can be obtained. It is also possible to make various flank corrections on the workpiece. The apparatus for carrying out the process is also disclosed.
    公开号:SU1530085A3
    申请号:SU813352654
    申请日:1981-11-12
    公开日:1989-12-15
    发明作者:Вирц Вальтер
    申请人:Рейсхауэр, Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to metalworking and is intended for machining worm-shaped or threaded products.
    The purpose of the invention is to improve the quality by eliminating burns and improving cooling.
    FIG. 1 is a schematic of the processing of a worm for a shaped product with an uncoupled instrument; FIG. 2 shows a profile tool head with an abrasive coating on the surface of the profile head, as well as to the sides along parts of the sides; Fig. 3 shows a profile tool head with an abrasive coating along a circular axial section of the surface; Fig. 4 is a diagram of the tool path along the profile of the product; Fig. 5 is a schematic of the device, providing additional axial movement in addition to the rotational movement of the tool; Fig. 6 is a schematic of the device, providing additional movement in the axial direction with additional axial movement of the tool; 7 is a diagram of the device with electronic adjustable synchrony product and tool; on Fig diagram of the device with the drive in the form of Conir.
    ate
    00
    00 SP

    (
    A single or multiple threaded worm or threaded tool 1 processes a single or multiple threaded worm or threaded product 2. Since the radius is g „
    tool 1 is smaller than radius 2, then the peripheral velocities are different, so that
    r out
    their
    slippage. The difference in peripheral speeds is referred to as the edit speed. The processing process includes two operations.
    First operation. Under rolling conditions, i.e. with the coordinated rotation of the product with the speed of the tool with the speed of the coolant around its axes and the mutual radial and axial movement of their profiles. The product and the instrument have the same modulus t.
    ta tg m-; r.
    Where
    ta ts 1;
    step of step 2; step of item 2; m is a module.
    In the course of processing, the tool and the product enter into mutual gearing and tool 1 is moved along a trajectory m equidistant according to the profile of the product 2 of the cylindrical surface of the head 3, the lateral side 4, the cylindrical surface of the leg 5 and the opposite lateral side 6.
    The profile head 7 of tool 1 has a smaller thickness D than the width L of the bottom of the cavity of the product 2, the angle ci of the profile 8 of the tool is smaller or at least equal to the corresponding profile angle oig of the product. liHCTpyMeHT 1 is in many places in engagement with article 2, and the profile of tool 1 is in contact with the profile of article 2, i.e. The total surface of the tool's instant contact points is less than the total surface of the product profile.
    The second operation. The product 2 does not move, but the tool 1 rotates and moves in the radial direction.
    After one revolution of the tool 1, the profile form in axial section is created over the entire width of the product 2, with all the teeth (profile in axial section) being profiled simultaneously.
    Due to the coincidence of both operations, the entire surface of the product profile 2 is processed. Due to the additional
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    The rotational movement D of tool 1 with respect to product 2 is accompanied by an additional displacement of the engagement points 9 between the two elements in the axial direction. The magnitude of the additional rotational motion, or the relative axial motion, respectively, flows from the outline of the contour of the product profile and the magnitude of the feed and return movements in the radial direction.
    It is advisable to choose the profile of the abrasive coating 10 on the head 11 of the profile so that the machining grooves are relatively small. The surface 12 of the tool profile head is cylindrical, so that the base surface and the surface of the product head can be machined, 2.
    The sides 13 of the abrasive coating 10 are tight and form a bend angle from maximum fb to minimum P ,. In this example, these angles are 14 or 31 degrees.
    An embodiment of the head 11 of the tool profile of the cross section of the abrasive coating 10 in the form of a part of a circle is possible. Such a head of the profile can handle a large number of files of various shapes, moreover, due to the correspondingly low feed rate along the relative trajectory, 14 separate machining-. The grooves should be positioned so tightly together that the desired surface structure (microprofile) is created.
    The axial pitch of the tool can be a multiple of the axial pitch of the product. In this case, the tool is in engagement with every second, third, or any tooth of the product 2.
    A device for treating a single or multiple worm of a cone-shaped or threaded product 2 turns on a caliper 15 and is driven by a drive 16. The spindle 17 of product 2 is driven by a drive 18, the corresponding angle of rotation q is measured by an angular stepping sensor 19 connected to spindle 17. The pulses of the angle of rotation from the angular stepping sensor 19 are introduced into the electronic regulator 20 of a synchronous stroke, in which
    5 .15
    The rotation angle pulses from the angular stepper sensor 21 of the spindle 22 of the tool 1 are also inserted. In the control circuit to maintain the ratio of the main speeds of the spindle 17 and the spindle 22 there is a power amplifier 23 acting on the actuator 16 which drives the spindle 22 in motion .
    Electronic computer 24 for calculating a product profile into which various parameters are entered through input unit 25, for example, the ratio of axial steps, the angle of the pro
    The profile shape, profile correction, etc., continuously calculates the feed amounts as a function of the axial position of the engagement points, the input block 26 forming, according to the profile and feed data entered, and the feed amount, pulses for relative rotation between the product 2 and the tool. 1 with a frequency that corresponds to the program.
    In addition, the device has a position control circuit 27 with a regulator 28, a power amplifier 29 and a feed drive 30 so that the position of the tool 1 can be continuously changed in the X direction.
    Position x; the caliper is registered by the scale element 31 and returns to the controller 28. The computer 24 for calculating the product profile calculates the desired feed amounts based on the additional pulses y given by the input unit 26 in order to create additional rotator of the tool movement 1. 1
    This additional rotational movement, which is imposed on the rotational movement of the tool, obtained from the ratio of the main revolutions of the tool and product, causes an additional movement of the meshing points between the elements in the axial direction. Due to this, the engagement points between the tool and the product are displaced continuously so that the desired worm profile is created on the product 2. This profile may consist of straight and curved sections.
    Both blocks 26 and 25 provide the ability to determine the feed rate during processing by selecting the appropriate
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    the magnitude of the feed movement in the radial direction.
    To profile two-way screws with a single-way screw, the ratio of the basis numbers of the product and tool turnover should be 2: 1. A possible embodiment of the device is when the additional displacement of the tool and product engagement points in the axial direction, consistent with the feed and return movements in the radial direction and including the profile corrections, is performed directly by moving the tool 1 in the axial direction, which in this case is mounted on the cross support 32.
    The spindle 17 and spindle 22 are driven by a common motor (not shown). The spindle 22 is designed as a movable shaft in order to move the tool in the axial direction.
    Both spindles 17 and 22 are connected to each other via gears 33 to 35, and these gears engage through cranked levers 36 and 37. By means of a switching transmission mechanism 38, the direction of rotation of the spindle 22 can be reversed in order to carry out feed processing or against filing.
    The ratio of the main revolutions of both gears 33 and 35 corresponds to the ratio of the numbers of visits of the product and the tool. one
    The product profile and profile corrections are entered through input unit 25 into the computer 24 to calculate the product profile. The computer 24 calculates the control signals for both the feed motors 39 and 40 to drive the cross slide 32 in motion in the X and Y directions.
    The synchronous operation of the tool 1 and the product could be regulated electronically (Fig. 7). For this purpose, the first control unit 41 with the electronic regulator 20 of the synchronous stroke and the power amplifier 23 for the drive 16 serves. The regulator is fed with control signals from the angles of the sensors 19 and 21. Data input steps 2 and tool 1 are entered through the input unit 42. .
    In the second control unit, both the engine 39 and the feed AO influence the movement of the caliper 15, and these engines are additionally equipped with angular stepping sensors 43 and 44. The second control unit consists of a profile data entry unit 25, a computer 24 for calculating the product profile and two servo amplifiers 45 and 46 for both feed motors 39 and 40.
    A variant of the device is possible in which the connection between the movement of the feed in the radial direction and the additional movement needed to create the profile of the screw is established by means of a mechanical copier with an easy-to-change template.
    The tool 1, mounted on the slide 47 being moved in the x direction, is connected to the product 2 via gears 33, 35, 48. The tool and the product are driven by a common motor (not shown).
    The spindle 22 has a differential gear 49, the outer gear 50 of which, together with the gear wheels 51 and 52, the two intermediate wheels 48 and the crankshafts 53 and 54, form a kinematic chain. The engine 55 is engaged with a gear wheel 52 mounted on the shaft 56. A copier 57 is mounted on the opposite end of this shaft.
    The roller 58 reads the information from the copier 57. The roller 58 is installed in the holder 59, which, in turn, is mounted on the caliper 47. Through the adjusting spindle 48 acting on the holder, it is possible to adjust the main installation of the caliper 47.
    Copier 57 contains profile depth and correction profile information. It creates a copying motion for the slide 47 in the x direction. By adjusting the speed of the engine 55, it is possible to set the speed of the profiling. This determines the time of manufacture as well as the surface roughness of the profile of the abrasive screw.
    权利要求:
    Claims (3)
    [1]
    1. Method of processing a one-way or multiple-worm of a worm-shaped or threaded product with a single-type or multiple-worm - a worm-shaped or threaded tool, in which the tool and product are informed by a consistent rotation around their axes, and the profiles of the tool and product are mutual radial and axial displacement, that is, and, in order to improve quality by eliminating burns and improving cooling, the tool profile is moved along paths that are equidistant correspondingly Any product has a cylindrical surface of the head, a side, a cylindrical surface of the leg and the opposite side, and the tool head has a smaller thickness than the bottom depth of the product, the angle of the tool profile is smaller or. in the extreme case equal to the corresponding profile corner of the product, and
    5 The total surface of the tool's instant contact points is less than the total surface of the product profile.
    [2]
    2. A method according to claim 1, characterized in that an abrasive coating is applied to the profile tool head
    circular in axial section of the surface.
    [3]
    3. Device for processing single or multiple
    5 a screw-shaped or threaded product mounted for rotation from a drive, a single or multi-threaded screw-shaped or threaded tool
    Q by a pattern mounted for rotation around its axis from a drive on a feed support placed with the possibility of radial reciprocating movement
    5 and from the drive, in order to improve quality, these drives are interconnected by a control system, including electronic and / or mechanical and / or hydraulic means for making the tool profile traversing the paths equidistant according to the profile product - the cylindrical surface of the head, the side, the cylindrical surface of the leg and the opposite side, while the profile tool head has a smaller thickness than the bottom width
    five
    CLAIM
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    NO- ;,
    16 fa,
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    MtftFive. five
    27
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    Phys.d
    类似技术:
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    同族专利:
    公开号 | 公开日
    CS226737B2|1984-04-16|
    DD201113A5|1983-07-06|
    DE3134147A1|1982-06-24|
    JPS57107734A|1982-07-05|
    JPH0244671B2|1990-10-04|
    HU185145B|1984-12-28|
    US4475319A|1984-10-09|
    CH647704A5|1985-02-15|
    DE3134147C2|1989-09-21|
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    US4971487A|1987-09-14|1990-11-20|Kabushiki Kaisha Technomax Eighty Five|Method for cutting involute gears|
    JPS6478720A|1987-09-22|1989-03-24|Nippon Gia Kogyo Kk|Corrective tooth cutting method for saddle type worm gear|
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    US5794801A|1993-08-16|1998-08-18|Lemelson; Jerome|Material compositions|
    US5573449A|1994-03-16|1996-11-12|The Gleason Works|Threaded grinding wheel, method of dressing, and grinding a workpiece therewith|
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    DE102016005258A1|2016-04-28|2017-11-02|Liebherr-Verzahntechnik Gmbh|Method for dressing a grinding worm|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH8476/80A|CH647704A5|1980-11-14|1980-11-14|METHOD AND DEVICE FOR MACHINING A SNAIL-SHAPED WORKPIECE WITH A SNAIL-SHAPED TOOL.|
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