EP0574849A2 - Flachschleifmaschine - Google Patents

Flachschleifmaschine Download PDF

Info

Publication number
EP0574849A2
EP0574849A2 EP93109432A EP93109432A EP0574849A2 EP 0574849 A2 EP0574849 A2 EP 0574849A2 EP 93109432 A EP93109432 A EP 93109432A EP 93109432 A EP93109432 A EP 93109432A EP 0574849 A2 EP0574849 A2 EP 0574849A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston rod
grinding machine
surface grinding
machine according
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.)
Ceased
Application number
EP93109432A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0574849A3 (OSRAM
Inventor
Rainer Lauxmann
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.)
Ziersch & Baltrusch Werkzeugmaschinenfabrik GmbH
Original Assignee
Ziersch & Baltrusch Werkzeugmaschinenfabrik GmbH
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 Ziersch & Baltrusch Werkzeugmaschinenfabrik GmbH filed Critical Ziersch & Baltrusch Werkzeugmaschinenfabrik GmbH
Publication of EP0574849A2 publication Critical patent/EP0574849A2/de
Publication of EP0574849A3 publication Critical patent/EP0574849A3/xx
Ceased 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
    • 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
    • B24B7/02—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a reciprocatingly-moved work-table

Definitions

  • the invention relates to a surface grinding machine with a rotating grinding wheel in a holder and a work table that can be slid back and forth relative thereto, on which a workpiece to be machined can be attached, in which a hollow cylinder with a piston rod arranged therein is provided, the holder of the grinding wheel is rigidly connected to the cylinder and the work table is rigidly connected to the piston rod or vice versa, and the relative movement between the grinding wheel and the work table can be brought about by a relative movement between the cylinder and the piston rod.
  • the latter is generally moved back and forth.
  • the workpiece to be ground is on a work table of the grinding machine that can be pushed back and forth.
  • grinding is carried out, while the movement in the opposite direction merely represents the return stroke, in which at least no significant grinding takes place.
  • the relative movement between grinding wheel and work table is usually effected in that the holder of the rotatable grinding wheel is rigidly connected to a hollow cylinder in which a piston rod can move in the axial direction, to which the work table is rigidly attached.
  • the holder of the grinding machine can also be rigidly connected to the movable piston rod and the work table to the cylinder, but this is rarely realized in practice.
  • the cylinder is rigidly connected to the base of the surface grinding machine, while the piston rod is moved relative to the machine.
  • a disadvantage of this known construction is the high space requirement of the machine in both axial directions of movement of the piston rod. At both cylinder ends, at least enough space must be kept free in the axial direction that the piston rod does not encounter an obstacle even when fully extended.
  • the piston rod usually has a much greater axial length than the cylinder, so that the entire space requirement of a conventional surface grinding machine in the axial Direction of the piston rod is calculated as the sum of the length of the piston rod and the maximum piston stroke.
  • the object of the invention is therefore to provide a surface grinding machine with the conventional components and the same movement options with regard to the relative movement between the grinding wheel and the work table, in particular the same maximum piston stroke as in a conventional surface grinding machine, but the space requirement in the axial direction of the piston rod is significantly less should be.
  • This object is achieved in that a fixed piston rod is provided in the surface grinding machine, while the cylinder is arranged to be movable relative to the piston rod and thus relative to the surface grinding machine.
  • the arrangement according to the invention reduces the axial space requirement of the surface grinding machine by the full length of the maximum piston stroke in an incredibly simple and elegant manner, since the piston rod is now rigidly connected to the machine, while the cylinder can be moved from one piston end to the other.
  • the piston rod is firmly clamped at both ends in the manner of a tie rod.
  • a piston rod can be selected with the same strength requirements with a relatively smaller wall thickness, which results in weight and material savings.
  • cylinder heads are provided which are attached directly to the work table, in particular are screwed on.
  • the work table itself acts as a tie rod.
  • the cylinder can be a compressed air cylinder. Due to the much higher compressibility of gases compared to liquids, the system will react more flexibly and more flexibly in the event of sudden strong resistance in the relative movement between piston rod and cylinder.
  • a supply of compressed air or hydraulic fluid to the cylinder through the piston rod is provided. This prevents moving connections and thus the risk of material fatigue and the resulting defects from the outset.
  • the compressed air or the hydraulic fluid is controlled from both sides of the cylinder via an external control valve.
  • An embodiment of the surface grinding machine according to the invention is particularly preferred in which the piston rod has at least one essentially obliquely running, preferably milled, surface in the region of its two ends, while the central part of the piston rod is cylindrical in shape. When moving into the end position of the cylinder predetermined by the maximum stroke, this dampens the cylinder movement.
  • the piston rod on the last piece before the respective piston end again has a cylindrical shape and has a diameter which fits snugly into the bore of a cylinder liner supporting the cylinder. This results in an exact entry into the end position and a corresponding braking.
  • An embodiment is also advantageous in which a throttle check valve with a connection to the compressed air or hydraulic fluid is provided on at least one of the stop-side ends of the cylinder is provided between the piston rod and the cylinder, which enables a soft retraction to the end position with an adjustable, defined speed, and an intercepting shock occurs only at the very end of the movement sequence.
  • the drawing shows a longitudinal section through an essential part of the surface grinding machine according to the invention, in particular a sectional view of the piston rod and the cylinder.
  • a cylinder liner 2 with a cylinder tube 3 and a mounted work table 4 runs on the piston rod 1 can be hydraulic oil in a hydraulic cylinder.
  • the piston rod 1 While the piston rod 1 is firmly clamped at its two ends in the manner of a tie rod and is rigidly connected to a base (not shown in the drawing), the cylinder liner 2 and the cylinder tube 3 can be in the direction of the double arrow axially back and forth.
  • the workpiece to be machined On the work table 4, which is rigidly connected to the cylinder liner 2, the workpiece to be machined will generally be fastened, while the grinding wheel, which is also not shown in the drawing, is connected to the piston rod 1 or its holder. Conversely, however, the workpiece could also be fixedly connected to the piston rod 1, while the grinding wheel moves back and forth with the cylinder liner 2.
  • a cross slide 5 is indicated at the clamping end of the piston rod 1, with which a relative transverse movement perpendicular to the direction of the double arrow and perpendicular to the plane of the drawing is also made possible.
  • connection piece 6 is also shown, on which connecting lines for the supply of lubricant, in particular compressed air or hydraulic oil, can be attached.
  • lubricant in particular compressed air or hydraulic oil
  • the lubricant is passed through an inner bore of the piston rod 1, where it passes through bores 7 into the cavity 8 between the piston rod 1 and the cylinder liner 2 or cylinder tube 3.
  • the usual supply of the lubricant via the cylinder was deliberately dispensed with, so that no movable feed lines are required, which could show signs of fatigue and the resulting defects if the cylinder is frequently moved back and forth.
  • the cavity 8 is sealed off from the outside world via a schematically illustrated wiper ring 9 and a rod seal 10.
  • O-ring seals 11 are provided, which seal the cylinder liner 2 against the cylinder tube 3 and a structure 12, on which in the example shown the work table 4 is screwed tight. Otherwise, the relative movement between the cylinder liner 2 and the piston rod 1 is facilitated by a schematically illustrated slide bearing 13.
  • a piston head 14 which serves as a right end stop for the cylinder liner 2.
  • a cylindrical piece 15 with a diameter that fits exactly into the bore 16 of the cylinder liner 2.
  • an oblique surface 17 is milled, which does not extend all the way to the right end of the cylindrical piece, so that the cylindrical piece 15 screwed onto the piston rod 1 has a normal cylindrical peripheral surface at the far right end.
  • a throttle check valve 18 is provided on the cylinder liner 2, which is connected to the cavity 8 and thus to the lubricant between the piston rod 1 and the cylinder 3 or cylinder liner 2.
  • the one-way flow control valve enables entry into the extreme end position with an adjustable defined speed and improves the soft entry characteristics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Actuator (AREA)
EP93109432A 1992-06-19 1993-06-14 Flachschleifmaschine Ceased EP0574849A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9208178U DE9208178U1 (de) 1992-06-19 1992-06-19 Flachschleifmaschine
DE9208178U 1992-06-19

Publications (2)

Publication Number Publication Date
EP0574849A2 true EP0574849A2 (de) 1993-12-22
EP0574849A3 EP0574849A3 (OSRAM) 1994-03-23

Family

ID=6880679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109432A Ceased EP0574849A2 (de) 1992-06-19 1993-06-14 Flachschleifmaschine

Country Status (2)

Country Link
EP (1) EP0574849A2 (OSRAM)
DE (1) DE9208178U1 (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181769A (zh) * 2016-08-30 2016-12-07 佛山市诚志齿轮有限公司 一种磨床工作台行程控制装置、系统及方法
CN116985000A (zh) * 2023-09-22 2023-11-03 中铁城建集团第一工程有限公司 高温高湿环境下钢结构焊接防腐设备和施工工艺

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1259317A (fr) * 1960-06-13 1961-04-21 Elliot & Company Ltd B Machine à rectifier les surfaces
DE2845729A1 (de) * 1978-10-20 1980-05-22 Mo Z Schlifovalnych Stankov Steuereinrichtung fuer die laenge des laengsganges des arbeitsorgans einer schleifmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181769A (zh) * 2016-08-30 2016-12-07 佛山市诚志齿轮有限公司 一种磨床工作台行程控制装置、系统及方法
CN116985000A (zh) * 2023-09-22 2023-11-03 中铁城建集团第一工程有限公司 高温高湿环境下钢结构焊接防腐设备和施工工艺
CN116985000B (zh) * 2023-09-22 2023-12-08 中铁城建集团第一工程有限公司 高温高湿环境下钢结构焊接防腐设备和施工工艺

Also Published As

Publication number Publication date
EP0574849A3 (OSRAM) 1994-03-23
DE9208178U1 (de) 1992-09-03

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