EP1366854A1 - Machine à meuler à tete double - Google Patents

Machine à meuler à tete double Download PDF

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Publication number
EP1366854A1
EP1366854A1 EP03005653A EP03005653A EP1366854A1 EP 1366854 A1 EP1366854 A1 EP 1366854A1 EP 03005653 A EP03005653 A EP 03005653A EP 03005653 A EP03005653 A EP 03005653A EP 1366854 A1 EP1366854 A1 EP 1366854A1
Authority
EP
European Patent Office
Prior art keywords
cooling lubricant
disc
ring
working
lower working
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.)
Withdrawn
Application number
EP03005653A
Other languages
German (de)
English (en)
Inventor
Hans-Peter Boller
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.)
Peter Wolters Werkzeugmaschinen GmbH
Original Assignee
Peter Wolters Werkzeugmaschinen 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
Priority claimed from DE10229941A external-priority patent/DE10229941A1/de
Application filed by Peter Wolters Werkzeugmaschinen GmbH filed Critical Peter Wolters Werkzeugmaschinen GmbH
Publication of EP1366854A1 publication Critical patent/EP1366854A1/fr
Withdrawn legal-status Critical Current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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • 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
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders

Definitions

  • the invention relates to a two-disc grinding device with coolant supply according to the preamble of claim 1.
  • two-disc grinding machines consist of an upper and an upper one lower working disc as well as an inner and an outer gear or pin ring, with which rotor discs interact.
  • the rotor disks have Perimeter a toothing and have several openings for receiving the machining workpieces. With the circulation of at least the inner tooth or The rotor disks become a pin ring on cycloidal paths between the working disks moves, which in turn are driven in rotation.
  • the invention has for its object a two-disc grinding machine train that high removal rates are achieved in the desired surface quality become.
  • the cutting speed naturally depends on the speed and the radius of the grinding wheel.
  • the average cutting speed v c is the cutting speed averaged over the radius difference (inside - outside).
  • the process heat and machining abrasion generated must pass through the cooling lubricant be removed. It has been found that the cooling lubricant at higher speeds, as required for high cutting speeds, is exposed to a considerable centrifugal effect and relatively quickly to the outside is transported. It is therefore provided in the invention that the feed means a Coolant amount control device having the amount of Cooling lubricant according to the speed of the upper and / or lower working disc controls such that the amount increases with increasing speed. It is therefore possible, with more draining lubricant by centrifugal force for to ensure an increased replenishment, so that dry running and thus welding or the like is avoided.
  • the removal rate can be increased many times over with conventional ones Machines can be increased. This with the desired roughness or surface quality.
  • An embodiment of the invention provides that separate feed means are provided for the upper and lower working discs.
  • the feed means for the lower working disc are designed so that they go directly to the lower working disc Coolant can get. According to one embodiment of the invention, this can be done happen that cooling lubricant to the inside of the upper and lower Work disc or the gap between them is promoted so that it through Centrifugal force can get into the gap between the working discs.
  • a another possibility provides that the cooling lubricant in a collection room the inside of the lower working disc gets into fluid communication stands with the gap between the upper and lower working disc.
  • the cooling lubricant can also flow out to the work surface of the lower work disc reach. It is understood that the supply to the holes on the one hand and to the working gap from the radially inside to the outside or from the collecting space in each case is carried out separately via a corresponding control of the amount of cooling lubricant.
  • the intensive and speed-dependent coolant supply to the upper and lower Working disc not only does not affect the removal process, it also promotes it it even helps to achieve very high removal rates, which also enable a pre-grinding process to be carried out satisfactorily.
  • the collecting room runs around with the inner working disc and is located in the interior the lower working disc or at the height of the gap between the working discs.
  • the collecting space is designed and arranged so that the cooling lubricant can flow radially to the working surface of the lower working disc. From The cooling lubricant is transported at a certain speed of the lower working disc to the working surface of the lower working disc due to centrifugal forces.
  • each fluid connection there is a volume that controls the volume flowing through Valve arranged, and the control device for the coolant supply opens the Valves according to the speed of the upper and / or lower working disc.
  • v c 10 m / s .
  • the cooling lubricant can pass through the holes in the upper working disk into the gap between the working disks, with sufficient cooling lubricant also reaching the working surface of the lower working disk.
  • cooling lubricant can also flow from the collecting space to the working surface of the lower working disc.
  • the cooling lubricant which passes through the holes in the upper working disk, only essentially reaches the working area of the upper working disk. With a corresponding coolant supply quantity, the collecting space now ensures that the lower working disc is also adequately supplied with cooling lubricant.
  • the collecting space is annular and its outer wall at least partially from the inside the lower working disc is formed.
  • a third fluid connection provided between the cooling lubricant source and the collecting space, the supply is via the inside of the upper working disc, namely such that when the cooling lubricant flows down a part by centrifugal force is thrown radially outwards into the gap area between the upper and lower working disc.
  • a valve controlling the flow rate is arranged, and the control of the valve takes place according to the speed of the upper or lower working disc.
  • the optimal amounts of lubricant are the supply of which is controlled by the valves, for example empirically. For example, the maximum or minimum amount of the Limit speeds can be set. The supply amount between the maximum values is also determined, and z. B. in the form of a curve in a memory the control device.
  • the grinding machine reaches a certain one Speed, this includes a corresponding opening cross-section of the valves.
  • the Valves are preferably proportional valves that run from one under constant Pressurized coolant source are supplied.
  • Coolant is evenly distributed through the holes in the upper working disc supplied, there is nevertheless no guarantee that the work surface is supplied evenly with the cooling lubricant, as before mentioned above, due to the prevailing centrifugal forces. Therefore sees an embodiment the invention that a distributor flange above the upper working disc is arranged, which is an equalization of the radially from the inside to the outside flowing coolant causes. This can be done according to an embodiment the invention with the help of a labyrinth, the z. B. identifies storage pockets, which cause the cooling lubricant to initially travel a distance in the circumferential direction must flow before it gets further outside.
  • each fluid connection contains a ring of vertical holes in the support body for the upper working disc.
  • the wreaths are preferably concentric with the work disks or arranged on its axis.
  • a Limiting ring arranged on the carrier ring for the inner ring gear or pin ring, which limits the collecting space in the upper part. During the inflow of Cooling lubricant to the collecting space cannot do this directly by centrifugal forces are thrown radially outwards.
  • the supply to the collecting channel takes place in the second fluid connection
  • the distributor ring preferably via a distributor ring, the is arranged on the underside of the support body for the upper working disc and which has a series of holes.
  • the distributor ring can go so far down protrude that it covers the limiting ring, so that when the coolant escapes the boundary wall from the holes in the distributor ring Skidding of the cooling lubricant prevented radially outwards.
  • each ring channel can be a stationary ring section Distribution pipe section to be assigned to that with a rigid feed pipe connected is. This type of feeding is particularly simple because of a rotating union is not required.
  • the manifold sections are with the feed pipe sections stationary, while the carrier body with the upper working disc is driven in rotation. It is also advantageous if the cooling lubricant emerges from the manifold sections is not such that the cooling lubricant inserted directly from above under pressure into the holes in the carrier body is, but the cooling lubricant essentially by gravity down running.
  • the cooling lubricant is radial in the gap between the working disks can move outwards
  • that the rotor disks have bases or the like on the underside, by which they are raised against the working surface of the lower working disc. This makes the cooling lubricant on the lower working disc easier be transported from the inside out.
  • the two-disc grinding machine according to the invention enables a high cutting speed a high removal rate without overheating or even cold welding enter.
  • the grinding machine according to the invention can therefore both can be used for pre-grinding and fine grinding. A separate editing process, which is naturally more complex is no longer necessary.
  • FIG. 1 shows a diagram in which the removal rate is plotted as a function of average grain sizes in a two-disc grinding machine for a workpiece made of 100 Cr6 steel (60-62 HRC).
  • the middle curve shows the average roughness Rz, which is naturally proportional is to mean grain size. It can be seen from this that the surface quality not adversely affected by the two-disc grinding machine according to the invention becomes.
  • a two-disc grinding machine with which the diagram of FIG. 1 is achieved can be seen in the other figures.
  • the two-disc grinding machine according to FIGS. 2 to 7 has an upper grinding or Working disc 10 on a support body 12 by screw connections is attached, as is known.
  • the carrier body is suspended on a shaft 16, caught by a suitable bearing, not shown, and by a Drive, not shown, can be set in rotation.
  • a bearing is shown at 18, which is arranged between the shaft 16 and the carrier body 12 and the carrier body 12 allows you to perform a limited swivel movement so that a flat or uniform contact of the upper working disc 10 is obtained.
  • a lower working disc 20 is in turn screwed to a Carrier body 22 connected, which is also shown in FIG Rotation is displaceable.
  • a support ring 26 is connected to a shaft 24 for one Pin wreath 28.
  • the pin wreath 28 interacts with one not shown Teeth of rotor disks 30 in the gap between the working disks 10, 20 are arranged.
  • the toothing of the rotor disks 30 also works together with one outer pin ring 32, which can be stationary or driven.
  • At a Rotation of at least the inside of the pin ring 28 causes the rotor disks to roll between the pin rings 28, 32 cyclically and take workpieces 34th with, which are arranged in openings of the rotor disk 30.
  • the carrier body 12 has three concentrically arranged ring channels in the upper region 36, 38, 40, the bottom of which is partly conical, radially outward is inclined. Downward vertical bores 42 are connected, which are concentric in three Wreaths are arranged in the carrier body 12. There are e.g. B. about the The scope of four such vertical bores 12 is provided per ring.
  • In the top Sections of the ring channels 36 to 40 are arcuate feed tube sections 44 arranged. The arrangement of the pipe sections 44 can be seen in FIG. 3.
  • Each ring channel 36 to 40 have two semicircular pipe sections 44 and each tube section 44 has a feed tube 46.
  • the feed pipe sections 46 are relatively rigid and able to hold pipe sections 44.
  • the distributor flange 50 has four bores 52 arranged at a distance of 90 ° on, which are aligned with the vertical bores 42.
  • four arcuate raised segments 54 are provided, which on the Form ends radially inwardly extending portions 56 so that on them Pockets are formed in which the cooling lubricant first flows before it radially outward through the passages between adjacent segments 54 can flow, as indicated by the arrows in Fig. 5.
  • Radially further out another four segments 58 are arranged, which also form pockets.
  • the segments 58 are molded as one part.
  • holes are indicated, which in the upper working disc 10 are attached and to the working surface of the working disc 10 lead. With the help of the labyrinth shown, even with considerable Centrifugal forces the cooling lubricant supplied via the bores 42, 52 relatively feed the holes 60 evenly.
  • An annular element 70 is on the carrier ring 26 for the inner pin ring 28 attached, which encloses the space within the pin ring 28.
  • This room is via an opening 72 in the carrier disk 26 in connection with a collecting space 74, which is formed within the lower working disc 20, with the outside of the collecting space 74 is limited by the inside of the working disk 20.
  • a plastic ring 76 attached to the carrier body 22 sealed, which contains a drain valve at 78, which by finger pressure opens. In this case, the coolant will drain down.
  • Another Seal 77 is provided between shaft 24 and ring 76.
  • the cooling lubricant which through the holes 68 of the distributor ring 66 is fed directly into the collecting space 74 flows. With a corresponding level in the collecting space 74, it can radially outwards drain off when it reaches the height of the working surface of the lower working disc 20 Has.
  • the cooling lubricant that is supplied via the central bores 42 flows freely downward from the vertical through holes in the carrier body 12 through the interior of the upper working disc 10 and on the outside of the limiting ring 70 down and from there also reaches the collecting room 74th
  • a pump 80 for cooling lubricants is driven by an electric motor 82.
  • the pump 80 is a constant current feed pump. It supplies three separate lines 82, 83, 86 via proportional valves V 1 , V 2 and V 3 .
  • the proportional valves V 1 to V 3 are connected to a PLC control as it is used per se for such machines. By controlling the valves V 1 to V 3 , the volume per unit time in the lines 82, 84 and 86 can be determined.
  • the lines 82, 84, 86 are connected to the feed pipes 46.
  • the outer ring channel 40 supplies the bores 60 of the upper working disk 10 via the distributor flange 50 with cooling lubricant.
  • the labyrinth in the distributor flange 50 is designed so that the direct path between the vertical holes 42 and the outer bores 60 is blocked by storage pockets.
  • the storage pockets (see Fig. 4) also effect an even distribution of the cooling lubricant to the inner bores 60 of the working disk 10.
  • the cooling lubricant even with high centrifugal forces not only to the outer bores 60 flow.
  • the workpieces 34 get enough at any speed in this way Coolant on their top.
  • the middle ring channel 38 supplies the working disk 10, 12 at a low speed the collecting space 74 with cooling lubricant. At higher speeds, part of the Amount of cooling lubricant on the inside of the upper working disk 10 Work area fed. This proportion increases with increasing speed up to one cooling lubricant into the collecting space 74 at a certain speed flows.
  • the inner annular channel 36 directly supplies the collecting space 74 via the distributor ring 66 and the opening 72 in the support ring 26. It is for this made sure that even at very high speed from here the upper working disc 10th no coolant is supplied. Part of this amount of cooling lubricant arrives at the working surface of the lower working disk 20.
  • the flows described of the cooling lubricant is approximately in the FIGS. 2 and 5 by arrows indicated. A small amount of coolant can flow from the inside of the Working disks 10, 20 through a lower opening 90 in the limiting ring 70 flow outside when the level in the collecting space 74 is correspondingly high.
  • the amount of cooling lubricant Q Ges depends on the speed of the upper and / or lower grinding wheel, as already mentioned.
  • the valves V 1 to V 3 enable individual quantity control Q 1 , Q 2 and Q 3 in accordance with the speed. Different amounts can therefore be supplied per fluid connection or line 82 to have a positive influence on the machining process. It is controlled via the PLC, to which a control panel is assigned for visualization. The operator can enter any amount of coolant Q 1 , Q 2 and Q 3 . At the end of the process, the proportional valves V 1 to V 3 are switched off and the lines 82, 84 and 86 are shut off, so that no further cooling lubricant is supplied.
  • the course of the amount of lubricant between these values is stored as a function of the speed, so that the valves V 1 to V 3 are set to a corresponding limitation of the delivery flow at each speed. It goes without saying that a plurality of such curves can be stored in the program of the control device in order to also achieve a modified course of the supply of the cooling lubricant quantity for different workpieces, in particular workpiece dimensions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP03005653A 2002-05-29 2003-03-13 Machine à meuler à tete double Withdrawn EP1366854A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10223890 2002-05-29
DE10223890 2002-05-29
DE10229941 2002-07-04
DE10229941A DE10229941A1 (de) 2002-05-29 2002-07-04 Zweischeiben-Schleifvorrichtung

Publications (1)

Publication Number Publication Date
EP1366854A1 true EP1366854A1 (fr) 2003-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005653A Withdrawn EP1366854A1 (fr) 2002-05-29 2003-03-13 Machine à meuler à tete double

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EP (1) EP1366854A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018126521A1 (fr) * 2017-01-04 2018-07-12 青岛理工大学 Réfrigération à tube à vortex de buse supersonique et système d'alimentation accouplé à une lubrification à quantité minimale de nanoliquide
US20220258300A1 (en) * 2021-02-17 2022-08-18 Lapmaster Wolters Gmbh Double-side or one-side machine tool
CN116967948A (zh) * 2023-09-25 2023-10-31 苏州博宏源机械制造有限公司 一种抛光盘及双面抛光机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163687A (en) * 1938-01-10 1939-06-27 Bucyrus Monighan Company Cutting
JPH0366565A (ja) * 1989-08-04 1991-03-22 Kyushu Electron Metal Co Ltd 半導体ウエーハの研磨方法
DE4126928A1 (de) * 1991-08-10 1993-02-11 Dirk Ruebenstrunk Verfahren zum kuehlen und schmieren von werkstueckoberflaechen
EP1075897A1 (fr) * 1999-08-10 2001-02-14 Peter Wolters, Werkzeugmaschinen GmbH Rodeuse avec deux plats de rodage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163687A (en) * 1938-01-10 1939-06-27 Bucyrus Monighan Company Cutting
JPH0366565A (ja) * 1989-08-04 1991-03-22 Kyushu Electron Metal Co Ltd 半導体ウエーハの研磨方法
DE4126928A1 (de) * 1991-08-10 1993-02-11 Dirk Ruebenstrunk Verfahren zum kuehlen und schmieren von werkstueckoberflaechen
EP1075897A1 (fr) * 1999-08-10 2001-02-14 Peter Wolters, Werkzeugmaschinen GmbH Rodeuse avec deux plats de rodage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 222 (M - 1121) 6 June 1991 (1991-06-06) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018126521A1 (fr) * 2017-01-04 2018-07-12 青岛理工大学 Réfrigération à tube à vortex de buse supersonique et système d'alimentation accouplé à une lubrification à quantité minimale de nanoliquide
US20220258300A1 (en) * 2021-02-17 2022-08-18 Lapmaster Wolters Gmbh Double-side or one-side machine tool
CN116967948A (zh) * 2023-09-25 2023-10-31 苏州博宏源机械制造有限公司 一种抛光盘及双面抛光机
CN116967948B (zh) * 2023-09-25 2023-12-12 苏州博宏源机械制造有限公司 一种抛光盘及双面抛光机

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