EP0201810B1 - Vorrichtung zum Schleifen von Halbzeug - Google Patents

Vorrichtung zum Schleifen von Halbzeug Download PDF

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Publication number
EP0201810B1
EP0201810B1 EP86105987A EP86105987A EP0201810B1 EP 0201810 B1 EP0201810 B1 EP 0201810B1 EP 86105987 A EP86105987 A EP 86105987A EP 86105987 A EP86105987 A EP 86105987A EP 0201810 B1 EP0201810 B1 EP 0201810B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
semi
finished product
fact
stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86105987A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0201810A2 (de
EP0201810A3 (en
Inventor
Egon Evertz
Rolf Prof. Dr.-Ing. Seybold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT86105987T priority Critical patent/ATE77783T1/de
Publication of EP0201810A2 publication Critical patent/EP0201810A2/de
Publication of EP0201810A3 publication Critical patent/EP0201810A3/de
Application granted granted Critical
Publication of EP0201810B1 publication Critical patent/EP0201810B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/3042—Means to remove scale or raised surface imperfection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19555—Varying speed ratio
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19884—Irregular teeth and bodies

Definitions

  • the invention relates to a device for grinding semi-finished products made of steel, in particular in the form of billets, according to the preamble of patent claim 1.
  • Such a device is known from US-PS 23 47 639.
  • a bow-shaped stop shoe is height-adjustable by means of a screw spindle on an arm, which in turn is attached to a carrier.
  • the carrier in turn engages a lever that supports the bearing of the grinding wheel.
  • such a multi-unit fastening not only leads to a complex structural design, but also to considerable transmission errors due to the dimensional deviations of the individual units from their nominal values and their increasing wear, which is considerable under the rough operating conditions of grinding semi-finished steel products.
  • a similar device for grinding semi-finished steel products is also known from US Pat. No. 2,558,943.
  • the latter are arranged with one part on the machine frame, while their other part engages on a bearing arm of the grinding wheel, and thus allows the grinding pressure to be changed as a function of the respective rotational position of the stick.
  • This grinding pressure control is designed in such a way that the contact pressure is reduced near the edges, so that a compensation is created in accordance with the longer dwell time there.
  • the intended compensation will only be partially achieved.
  • the specific grinding pressure largely depends on the material composition.
  • FR-PS 966 400 it is known, when grinding billets, to reduce the edge pressure of the grinding wheel by means of a hydraulic control, which in turn is subject to the action of a hydraulic actuator, which is acted upon by a roller which rests on a template rotating around the billet .
  • a hydraulic actuator which is acted upon by a roller which rests on a template rotating around the billet .
  • the actual billet dimensions are not recorded here.
  • the grinding pressure control is subject to the actions already described above.
  • the invention is based on the object of making a structurally particularly reliable and simple arrangement with reduced transmission errors, which should be easy to adjust, in order to extend the residence time of the grinding wheel in the edge region of the stick when the latter rotates also take into account the removal of the abrasive from the grinding wheel.
  • the depth of penetration of the material removal should be uniform even with different strength of the material.
  • a corresponding feature of the invention is that the height adjustment of the sector designed as a stop is not effected by a vertical longitudinal displacement of the same, but on the basis of a pivotability by the pivot bearing in the immediate vicinity the grinding wheel axis or even coaxial to the latter is provided.
  • the position of the sector forming the stop is transferred directly or with as little play as possible to the bearing of the grinding wheel, so that the latter carries out with high precision the material removal that was specified by setting the sector.
  • the penetration depth is therefore also achieved with different material strengths due to fluctuations in the composition or the heat treatment.
  • the sector can be adjusted so that the height difference is about 1 mm.
  • the movement of the semi-finished product in the longitudinal direction on the one hand and around the longitudinal axis on the other hand leads to a slightly spiral grinding track in which the respective grinding width overlaps.
  • the design of the stop in the form of a circular sector is technically particularly easy to implement.
  • the embodiment in the form of a spiral sector has the advantage of also being able to detect larger differences in altitude.
  • the wear of the sector itself can be reduced by running the sector with an overlying roller.
  • the pivotable setting and detection of the sector can be carried out in different ways. In particular, it is also accessible to automation by, for example, a constant readjustment per meter stick length when the abrasive is removed.
  • at least one screw spindle acts on the sector, for which a threaded bracket is provided on the component carrying the grinding wheel bearing. The screw spindle can then be adjusted in the desired manner by hand.
  • a piston-cylinder unit can be used, one part of which engages the sector and the other part of which engages the component carrying the grinding wheel bearing.
  • the grinding wheel normally has a cylindrical machining surface. Since the removal is to take place in one plane, it is accordingly necessary that the longitudinal axis of the semi-finished product and the grinding wheel axis run parallel to one another.
  • the contact points of the grinding wheel on the one hand and the sector on the other hand can give rise to a slight inclination of the grinding wheel axis under unfavorable circumstances, that is to say if the components carrying the grinding wheel bearing are not sufficiently firmly arranged. This can be avoided if a template is also provided on the machined side of the grinding wheel lying on the finished semi-finished product surface, which, however, then rests on the grinding wheel at the same height relative to the grinding wheel axis.
  • the invention further provides for the use of means for detecting the rotational position of the semi-finished product.
  • Their mode of operation can be directly influenced by the design of the stop if a position transmitter is provided on the component bearing the grinding wheel, on which a contact transmitter can be set.
  • the arrangement can in particular be made such that the position transmitter reaches the contact transmitter when the height of the sector has increased by more than 2%, starting from its lowest position.
  • the lowest position is considered to be the one in which the segment lies in the middle of the semi-finished product between two edges.
  • the increase of more than 2% corresponds to an average turning range of 20 ° and a turning range covering the corners of 70 °.
  • a switching cross can also be used in a known manner, which rotates with the semifinished product, switches on a switch after every 90 turns and keeps it switched on for less than 90 ° rotation.
  • the contactor or the switch keeps the speed of rotation of the semi-finished product in the rotating range of 35 °, starting from every corner of the semi-finished product, 3 times as fast as in the subsequent 20 rotating range in the middle of the semi-finished product.
  • the stop can be adjusted in height as a function of the angle of rotation of the semi-finished product, with the proviso that the grinding wheel lifts somewhat in the region of the corners of the semi-finished product.
  • the drawing shows the grinding wheel 2, the axis 1 of which is arranged in an elongated component 3 consisting of two parallel arms.
  • drives for the grinding wheel 2 are in the form of a belt, not shown provided disc, over which a drive belt rotates, which mediates the drive of a motor located at the other end of component 3.
  • the grinding wheel 2 thus rotates about the grinding wheel axis 5, which runs parallel to the longitudinal axis 16 of the billet 14 to be machined.
  • the stick 14 is displaced in the feed direction and rotated about its longitudinal axis 16 in the direction of the arrow 17 during this movement.
  • the result is that the grinding wheel 2 removes the semi-finished surface 4, the penetration depth 6 of the processed semi-finished surface 4 being sufficient to prevent any cracks originally originating from the surface 4 from appearing.
  • a sector 9 of a spiral forming the template is arranged on the grinding wheel bearing 10 on the side of the semi-finished surface 4 which has not yet been machined and can therefore be pivoted coaxially to the grinding wheel axis.
  • a screw spindle 18 engages in the sector 9, for which a threaded block 12 is fastened to the component 3.
  • the sector 9 can be set and determined in such a different way that the intended height difference of the support point 7 of the sector 9 with respect to the support point of the grinding wheel 2 is maintained.
  • a template 19 is provided on the side opposite the sector 9, in which the support point 13 lies on the already machined semi-finished surface 11 at the same height as in the grinding wheel 2. This results in an equally high support of the two-armed component 3 on both sides of the grinding wheel bearing 10 by means of the template 9 or 19 on the semifinished product surface 4 or 11.
  • the template 19 shown in Fig. 2 further enables that in an end position of the semi-finished product, when its feed is almost fully extended, there is also support for the grinding wheel e 2 when the opposite template is no longer on.
  • the proposed height adjustability of the template can advantageously be controlled such that a change in distance occurs as a function of the angle of rotation, as a result of which the grinding wheel is raised in the corner area.
  • a piston-cylinder unit 50, 20 is provided for the adjustability of the sector 9 designed as a stop.
  • the cylinder is connected to a hydraulic control.
  • the sector 9 is equipped with a roller 21.
  • the circular gate is in this case of a slightly smaller radius. It has an undercut groove track 29, indicated in the drawing, in which a screw nut, which cannot be seen in the drawing, is guided, so that the bearing bolt 30, which supports the roller 21, can be screwed in and tightened.
  • the bearing roller 21 is fixed in a position as can be used for a limited height adjustment range of the sector 9.
  • the sector 9 can be that of a circle as well as that of a spiral.
  • the center of the circle 31 according to FIG. 1 lies at a short distance from the pivot bearing 32 of the sector passing through the grinding wheel axis 5, so that, based on the pivot point of the grinding wheel going through the grinding wheel axis 5 2, results in an eccentricity.
  • the pivot bearing 32 can also be understood as the center of a spiral, of which the sector 9 represents a section. In this case, maintaining an eccentricity between the spiral center and the grinding wheel axis 5 is not indicated.
  • the circumferential trajectory of the sector 9 is largely identical in the drawing, as in the other case, so that a differentiated drawing has been dispensed with.
  • the component 3 carrying the grinding wheel bearing is in turn pivotable in the fixed bearing block 33, so that the longitudinal center line 34 can assume different inclinations.
  • a scaled position transmitter 22 which is displaceable in a guide 35 is articulated on the component 3 carrying the grinding wheel bearing, while the guide 35 is articulated in a stationary manner.
  • the guide 35 has a scale for the purpose of setting a contact transmitter 23, which can be adjusted to a counter contact of the position transmitter 22.
  • the highest and lowest position can be read more easily on the position transmitter 22 when a stick rotates, so that, starting from the lowest position, the contact transmitter 23 can be adjusted to a certain altitude.
  • a signal current leads from the contactor 23 directly to a switching switch 36 of an AND circuit 37.
  • This switch 26 is under the action of a switching cross 24 rotating with the stick 14, which has a switch lever during the rotation in the manner already described in its contact position lung transferred.
  • the arrangement is expedient in such a way that there is a different switching state in the middle rotation region 28 by 20 ° than in the rotation region 27 of 35 each which adjoins on both sides and extends to the corner.
  • the two rotation regions 27, 28 mentioned are shown in FIG. 1.
  • the AND circuit 37 allows either the contactor 23 or the switch 26 or both elements to be processed as an input signal by the switching switch 36 being set accordingly.
  • the arithmetic amplifier 38 processes the received signal in such a way that, depending on the output of the arithmetic switch 38, the field regulator 39 of a direct current shunt can be set to two different values such that the rotational speed of the drive motor 25 in the rotating range 27 is three times as large as in the rotating range 28 .
  • FIG. 6 An optional arrangement for the semi-finished product to be driven at an uneven speed is shown in FIG. 6. Accordingly, there is an elliptical gear transmission 40 which is connected via the gearwheel 41 to a drive motor rotating at the same speed. Together with the gearwheel 41, the toothed ellipse 42 rotates around its one focal point 43. It is in toothed engagement with the toothed ellipse 44 of the same size, which rotates around its one focal point 45. There is also a fixed connection between it and the driven gearwheel 46 . The latter drives the semi-finished gear 48, which has a fourfold circumference, so that four times the speed increases periodically when the latter rotates. The semifinished product is firmly connected to the latter gear 48 in such a way that an increased speed occurs in the rotating areas 27 of the semifinished corners compared to the rotating areas 28 in the middle of the semifinished product. 1 shows these areas.
  • the extent of the non-uniformity can be selected by the choice of the eccentricity e and the large axis a of the two congruent elliptical gears, so that a correspondingly higher speed can be produced for the corner area than in the center area of the semi-finished product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Disintegrating Or Milling (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP86105987A 1985-05-14 1986-04-30 Vorrichtung zum Schleifen von Halbzeug Expired - Lifetime EP0201810B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105987T ATE77783T1 (de) 1985-05-14 1986-04-30 Vorrichtung zum schleifen von halbzeug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3517302 1985-05-14
DE19853517302 DE3517302A1 (de) 1985-05-14 1985-05-14 Vorrichtung zum schleifen von halbzeug

Publications (3)

Publication Number Publication Date
EP0201810A2 EP0201810A2 (de) 1986-11-20
EP0201810A3 EP0201810A3 (en) 1989-08-23
EP0201810B1 true EP0201810B1 (de) 1992-07-01

Family

ID=6270673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105987A Expired - Lifetime EP0201810B1 (de) 1985-05-14 1986-04-30 Vorrichtung zum Schleifen von Halbzeug

Country Status (4)

Country Link
US (1) US4679355A (enrdf_load_stackoverflow)
EP (1) EP0201810B1 (enrdf_load_stackoverflow)
AT (1) ATE77783T1 (enrdf_load_stackoverflow)
DE (2) DE3517302A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6900019B2 (ja) * 2016-05-25 2021-07-07 株式会社ナガセインテグレックス 多面体ワークの研削方法
US10058976B2 (en) 2016-11-11 2018-08-28 Att Technology, Ltd. Hardbanding removal device and method
CN115502858A (zh) * 2022-09-21 2022-12-23 马鞍山市鑫龙特钢有限公司 一种钢管胚料表面处理装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE138615C (enrdf_load_stackoverflow) *
DE138618C (enrdf_load_stackoverflow) *
US2347639A (en) * 1942-11-24 1944-04-25 Driver Co Wilbur B Bar-grinding apparatus
US2347503A (en) * 1943-08-27 1944-04-25 Driver Co Wilbur B Bar-grinding apparatus
FR966400A (fr) * 1948-05-13 1950-10-09 Dispositif régulateur de pression applicable au meulage des lingots
US2558943A (en) * 1949-11-15 1951-07-03 Driver Co Wilbur B Bar grinding apparatus
GB831652A (en) * 1956-08-10 1960-03-30 Matisa Materiel Ind Sa Grinding machine for rails, beams and like members
US2876598A (en) * 1957-01-10 1959-03-10 Allegheny Ludlum Steel Grinding machine
US3040481A (en) * 1960-09-16 1962-06-26 Vlieg Howard Rawson De Ice skate grinding machine
DE1272769B (de) * 1964-11-07 1968-07-11 Juenkerather Maschbau Gmbh Pendelschleifmaschine zum allseitigen Schleifen oder Fehlerausschleifen von parallel zur Schleifscheibenachse reversierend laengsverschiebbaren Knueppeln oder dergleichen Halbzeug
US3823617A (en) * 1972-04-28 1974-07-16 Aqua Marine Mfg Ltd Steering system
DE2336276C2 (de) * 1972-07-21 1982-11-25 Nolek System AB, Norsborg Einrichtung zum Abschleifen von Graten an größeren Serien gleicher Werkstücke
HU167643B (enrdf_load_stackoverflow) * 1973-04-24 1975-11-28
US3918209A (en) * 1974-08-19 1975-11-11 British Oxygen Co Ltd Metal removal apparatus
FR2460182A1 (fr) * 1979-06-29 1981-01-23 Gendron Sa Dispositif permettant d'usiner des cames avec precision, et avec une vitesse de coupe constante
DE3312898A1 (de) * 1983-04-11 1984-10-11 Vereinigte Glaswerke Gmbh, 5100 Aachen Verfahren und vorrichtung zur positionssteuerung des werkzeugs einer kantenbearbeitungsmaschine fuer glasscheiben

Also Published As

Publication number Publication date
US4679355A (en) 1987-07-14
ATE77783T1 (de) 1992-07-15
EP0201810A2 (de) 1986-11-20
DE3517302A1 (de) 1986-11-20
DE3517302C2 (enrdf_load_stackoverflow) 1988-02-04
EP0201810A3 (en) 1989-08-23
DE3685854D1 (de) 1992-08-06

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