WO2011085913A1 - Procédé de rectification cylindrique de barres rondes longues et minces et machine de rectification cylindrique pour mettre en oeuvre le procédé comprenant une lunette postérieure à autocentrage - Google Patents

Procédé de rectification cylindrique de barres rondes longues et minces et machine de rectification cylindrique pour mettre en oeuvre le procédé comprenant une lunette postérieure à autocentrage Download PDF

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Publication number
WO2011085913A1
WO2011085913A1 PCT/EP2010/070178 EP2010070178W WO2011085913A1 WO 2011085913 A1 WO2011085913 A1 WO 2011085913A1 EP 2010070178 W EP2010070178 W EP 2010070178W WO 2011085913 A1 WO2011085913 A1 WO 2011085913A1
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WO
WIPO (PCT)
Prior art keywords
grinding
steady rest
grinding wheel
round
round rod
Prior art date
Application number
PCT/EP2010/070178
Other languages
German (de)
English (en)
Inventor
Hubert Müller
Original Assignee
Erwin Junker Maschinenfabrik 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 Erwin Junker Maschinenfabrik Gmbh filed Critical Erwin Junker Maschinenfabrik Gmbh
Priority to CN201080057997.4A priority Critical patent/CN102666008B/zh
Priority to RU2012131132/02A priority patent/RU2540284C2/ru
Priority to EP10800733.7A priority patent/EP2516109B1/fr
Priority to ES10800733T priority patent/ES2431513T3/es
Publication of WO2011085913A1 publication Critical patent/WO2011085913A1/fr

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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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0061—Other grinding machines or devices having several tools on a revolving tools box
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/065—Steady rests
    • 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
    • B24B49/04—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 involving measurement of the workpiece at the place of grinding during grinding operation
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally

Definitions

  • the invention relates to a method for cylindrical grinding of long, thin round bars according to the preamble of claim 1 and a cylindrical grinding machine for carrying out the method according to the preamble of claim 7.
  • a method of this type is known from DE 103 08 292 B4 of the Applicant.
  • the known method is intended for the production of tools made of hard metal, which is especially intended to round rods made of sintered cemented carbide as a starting material.
  • the known method is "working from the running rod", ie the forming the starting material round rod whose length is a multiple of the length of the individual tool is gradually pushed through the chuck of the workpiece headstock and each tightened when a certain, the The method is imperative that the outstanding end area is clamped between the workpiece headstock and a tailstock during cylindrical grinding between the workpiece headstock and its tailstock first still free end of the round rod a face cone are sanded with great accuracy, which is to be retracted for tightening in a hollow body, which is located on a sleeve of the tailstock.
  • a cylindrical grinding machine which is also intended for grinding long, thin round rods.
  • length / diameter ratios of more than 100 are to be achieved with this machine.
  • a workpiece headstock in the direction of its spindle axis which is also the axis of rotation of the clamped workpiece, slidably mounted on the machine bed.
  • the long, thin workpiece clamped in the workpiece spindle (quill) is driven with its free end between two grinding wheels, the axes of rotation of which run parallel to that of the workpiece.
  • the two grinding wheels lie approximately in the same radial plane and leave between them a gap, into which the workpiece can enter.
  • the two grinding wheels, one of which can be used for roughing and the other for fine machining are delivered to the workpiece in a direction perpendicular to their axes of rotation.
  • a support with a V-shaped recess is arranged; a separate pressure roller causes the workpiece is held firmly in this recess.
  • the known cylindrical grinding machine according to DE 694 21 859 T2 is intended to operate such that the workpiece headstock guides the workpiece in its axial direction along the grinding wheels until the entire length of the diameter of the workpiece to be ground is ground. In this case, however, the workpiece lies in the recess of the support with a peripheral surface which is not to be machined in this machine, and the workpiece must rotate with this peripheral surface in the recess. This is only possible with regard to the grinding result when the workpiece is already ground on its cylindrical shank. With the cylindrical grinding machine according to DE 694 21 859 12, therefore, no workpieces can be ground that still have their - for example turned - raw contour.
  • DE 198 57 364 A1 shows that an in-process measurement and control can also be carried out successfully during peeling grinding.
  • peel grinding the outside diameter of a workpiece to be produced is ground in a single longitudinal stroke. This brings with it the difficulty in measuring and controlling, that the already honed Au- # be messyr can not be corrected later if the specified size is exceeded.
  • the workpiece is permanently and continuously measured during grinding on the existing actual dimension and simultaneously the measured actual size continuously automatically corrected to a predetermined grinding time-dependent nominal size. In this way it is avoided that the workpiece to be ground is ground to undersize.
  • the invention has for its object to provide a method of the type mentioned, which works quickly and economically, is easy to perform and leads to grinding results of high accuracy.
  • the solution of this problem is achieved with the entirety of the features of claim 1.
  • the principle of the method according to the invention is based on the fact that in grinding operation, the grinding wheel and the steady rest together form an operational solid unit and that this unit is moved relative to the round rod in the longitudinal direction.
  • the fixed longitudinal assignment is given by the fact that the bezel rests against the already ground by the peel grinding part of the round rod.
  • the bezel is thus opposite the grinding area - this is the area in which the grinding wheel touches the round bar - offset laterally towards the workpiece headstock out.
  • the grinding wheel is always the first on the uncut round bar effective, so that one can also speak of a caster of the bezel.
  • the grinding wheel is no longer active in the ground area of the round bar on which the steady rest rests.
  • “Operationally fixed” in claim 1 means that the steady rest and the grinding wheel must be held in this fixed longitudinal allocation at least during grinding.This can be done simply by mounting a grinding spindle bearing the grinding wheel firmly together with the steady rest on a carriage or grinding table is, which is axially moved relative to a fixed workpiece headstock in which the round rod is clamped.
  • the reverse arrangement with fixed unit consisting of grinding wheel and steady rest as well as with moving round bar is also possible.
  • the steady rest can be moved in the axial direction relative to the grinding wheel. This has advantages when grinding special contours as well as when loading and unloading the grinding machine.
  • the method according to the invention has the advantage that the steady rest is always effective close to the grinding wheel.
  • a single bezel is sufficient, because it always stands at the optimum position.
  • the arrangement of further steady rests is also not ruled out in the case of particularly long round bars which tend to sag.
  • the support on the already ground by longitudinal grinding area of the round bar leads to a safe and accurate guidance and is another prerequisite for a grinding result of high accuracy.
  • the method can therefore still be carried out by peeling grinding, and the round rods can be clamped with their rough contour in the workpiece headstock.
  • the special preceding method step is therefore omitted in that the cylindrical shank of the workpiece / blank must be ground.
  • the secure support of the round rod close to the grinding wheel brings with it the further advantage that the method can be carried out solely with flying clamping of the round rod in the workpiece headstock; It is therefore not essential to support the other end of the round rod in a tailstock.
  • the in-process measurement and control of the ground diameter is also carried out in the inventive method. Since the steady rest must be offset laterally in the direction of the workpiece headstock relative to the plane of rotation of the grinding wheel, the feeler elements of a measuring device can still be brought into contact with the round rod in the grinding area of the grinding wheel. This is the peripheral area on the round bar that is touched by the grinding wheel. The measurement takes place at the finished dimension of a grinding pass.
  • the inventive method can be carried out with particular accuracy by constantly adjusting and correcting the loop intervention.
  • the method according to the invention can furthermore be optimized in that it is carried out according to claim 3 with an automatically adjusting and centering steady rest. This ensures that the axis of rotation of the rotating round bar is always held in the position predetermined by the workpiece headstock. It can thus achieve an optimal grinding result.
  • Claims 5 and 6 indicate how the method according to the invention can be carried out in practice when the round bar is moved in its longitudinal direction during grinding or stands still. All described motion and control operations can be CNC controlled.
  • the invention also relates to a cylindrical grinding machine according to the preamble of claim 7, which is to serve for carrying out the method according to at least one of claims 1 to 5.
  • the state of the art for a cylindrical grinding machine according to the preamble of claim 7 can be the already described cylindrical grinding machine according to DE 694 21 859 T2. This differs from the cylindrical grinding machine according to the invention by the features indicated in the characterizing part of claim 7.
  • the basic difference with the prior art is in the cylindrical grinding machine according to claim 7 in that the workpiece headstock pulls the round rod in the grinding operation along the rotating grinding wheel, whereby the steady rest against the already ground portion of the round bar.
  • Such a grinding machine can be carried out in a particularly simple manner in that the steady rest, the measuring point of the measuring device and the grinding spindle are fixedly arranged on a machine bed, while the workpiece headstock in the clamping direction of the rotating round rod, linear and abrasive past the grinding wheel ,
  • the kinematic reversal with a fixed workpiece spindle head and a linearly movable unit of steady rest, measuring head and grinding spindle is relatively easy to perform.
  • Fig. 1 is a top view of a device with which the method according to the invention is carried out.
  • FIG. 2 shows further details of the device according to FIG. 1 in the there drawn, partially sectioned view along the line A - A.
  • Fig. 3 is a view similar to Fig. 2 along the line A - A in Fig. 1 in another working phase of the device.
  • FIG. 4 is a partially sectional view taken along the line B - B in FIG. 1.
  • FIG. 4 is a partially sectional view taken along the line B - B in FIG. 1.
  • Figure 5 shows a top view of a grinding machine based on the basic structure of a universal grinding machine for carrying out the method according to the invention.
  • Fig. 6 shows a detail C of Fig. 5 in an enlarged view.
  • Fig. 7 is a view corresponding to Fig. 5 in another processing phase.
  • Fig. 8 illustrates the conditions when grinding a conical contour.
  • Fig. 9 shows how also graded contours can be ground with the method according to the invention.
  • FIG. 1 the main parts of a device, with which the method according to the invention is carried out, are schematically illustrated in a view from above.
  • Fig. 1 is mainly used to explain the basic principle of the method.
  • 1 denotes the workpiece headstock of a grinding machine.
  • the workpiece headstock 1 serves to accommodate a chuck 2.
  • the round rod 3 so the workpiece to be ground, clamped at one end.
  • the opposite other end may be clamped in a known manner on a tailstock, which is not shown in Fig. 1.
  • the workpiece headstock 1 has an electromotive drive and offset the clamped round rod 3 in rotation about its longitudinal axis. 4
  • the grinding wheel 5 denotes a grinding wheel of substantially cylindrical contour, which rotates about the axis of rotation 6.
  • the grinding wheel 5 is delivered in the feed direction 7 to the round bar 3, and the output diameter DO of the round bar 3 is reduced to the finished dimension D1.
  • a bezel 9, a Vorablageprisma 10 and the measuring head 13 of a diameter-measuring device on a common base 8 are arranged on the side opposite the grinding wheel 5 side of the round bar 3.
  • the base 8 illustrates that the three mentioned parts 9, 10 and 13 are to form a combined, common assembly which, depending on the embodiment, can also be moved as a whole parallel to the common central axis 4, cf. the directional arrow 15b.
  • the bezel 9 is used in a known manner to support the workpiece and absorb the grinding pressure of the grinding wheel 5 so that it does not bend the workpiece during grinding.
  • the Vorablageprisma 10 is pivotally mounted about a pivot axis 12 on the bezel 9 and serves as a temporary storage for the workpiece during loading and unloading, as will be explained below.
  • the pre-depositing prism 10 is provided with a longitudinal stop 11.
  • the measuring head 13 has one or more movable feeler members 14 which are brought into contact with the grinding area 3c of the round bar 3 in the current grinding operation. This is the peripheral portion of the round bar 3, in which the grinding wheel 5 the Round bar 3 touched.
  • the grinding area 3c lies between the non-ground area 3a and the ground area 3b, against which the steady rest 9 rests with its lunette jaws 19.
  • the diameter reached in each case in the grinding region 3c is continuously measured during the grinding operation and processed by the CNC control of the device into further actuating signals for the grinding wheel 5.
  • the arrangement is such that the sensing elements 14 of the grinding wheel 5 in the grinding area 3c are directly opposite.
  • the directional arrows 15a (grinding wheel 5), 15b (base 8) and 16 (workpiece headstock 1) are essential. It is important that during grinding a relative, oppositely directed movement between on the one hand the workpiece headstock 1 (direction arrow 16) and the other hand, the grinding wheel 5 on the ground workpiece diameter together with the base 8 (direction arrows 15a, 15b) comes about. In this case, one of the two oppositely moved modules can also stand still.
  • the grinding wheel 5 can rest with the associated grinding spindle and the base 8 in the direction parallel to the common center axis 4; then the workpiece headstock 1 is pulled with the round bar 3 in the direction of the directional arrow 16. In this case, the round bar 3 is pulled past with constant reduction of its diameter at the grinding wheel 5, but the bezel 9 is always consistent in the area of the grinding wheel 5. Although there is only a single bezel 9 available, but this always acts at the optimum location.
  • the workpiece headstock 1 could stand still together with the round rod 3, and the grinding wheel 5 would be moved together with the base 8 in the common direction 15a, 15b. Then the grinding wheel 5 moves over the round bar 3 in Fig. 1 from left to right, and the bezel 9 follows the grinding wheel 5 trailing at a small longitudinal distance. It is also achieved that the round rod 3 is optimally supported during grinding. In the two cases mentioned, of course, the measuring head 13 always remains in its arrangement relative to the grinding wheel 5. When the grinding wheel 5 and the base 8 in the direction parallel to the common
  • Longitudinal axis 4 are arranged stationary, resulting in a grinding machine of basically simple construction; because only the workpiece headstock 1 has to be moved in the direction of the common longitudinal axis 4 for grinding.
  • a design in the manner of universal grinding machines for the method according to the invention also provides further possibilities for grinding special contours, as will be shown below.
  • FIG. 2 shows details of the assembly consisting of the steady rest 9, the prismatic prism 10 and the measuring head 13 on the common base 8 in a side view corresponding to the line A - A in FIG. 1. It also corresponds to the working phase of FIG grinding. It can be seen that the base 8 is placed on a machine bed 17 and that the Vorablageprisma 10 is located on a pivot arm which can be adjusted about the pivot axis 12. The two possible pivoting directions are indicated by the curved double arrow 18. In Fig. 2, the Vorablageprisma 10 is lowered to its rest position and empty. The round rod 3 is held by the workpiece spindle head 1 at its one end and driven for rotation. The grinding wheel 5 also rotates and is delivered to the round bar 3.
  • the arranged next to the prism lunette jaws 19 are in their extended position, hold the round rod 3 and support it against the grinding pressure.
  • the round bar 3 is held and supported by the now extended lunette jaws 19 with only a small lateral distance from the grinding wheel 5 (see FIG. Despite the mutual movement of grinding wheel 5 and round bar 3, the mutual assignment of grinding wheel 5 and steady rest 9 in the longitudinal direction always remains the same, so that an optimal support of the round bar 3 and thus a high grinding accuracy is ensured.
  • FIG. 3 Another working phase in the same viewing direction A - A from FIG. 1 is shown in FIG. 3. This is the working phase of loading and unloading.
  • the grinding wheel 5 is moved back, and the workpiece spindle head 1 stands still.
  • the prewar prism 10 is raised to its upper position, which is the loading and unloading position.
  • On the Vorablageprisma 10 rests in Fig. 1 right end of a round bar 3 and thereby strikes the longitudinal stop 1 1, see. Also Fig. 6.
  • the next to the Vorablageprisma 10 lunette jaws 19 are withdrawn in their non-fitting to a workpiece position.
  • the lunettes 9 shown here by way of example can not only support the round bar 3 and counteract the grinding pressure, but also act centering. Bezels of this type are automatically tracked very precisely the decreasing diameter of the round rods 3 in the sense of centering. They belong to the state of the art; as an example of many, EP 0 554 506 B1 may be mentioned. A more detailed description is therefore not required.
  • Fig. 4 shows in the partially sectioned view taken along the line B - B in Fig. 1, as the sensing elements 14 of the measuring device 13 are employed in their Anstellcardi 20 to the round bar 3.
  • the measuring devices of this type are also state of the art, cf. DE 198 57 364 A1. They make it possible to measure the diameter of the round bar 3 currently located in the grinding area 3c in a time-parallel manner. Based on these measurements, dimensional deviations from the nominal dimension can be compensated immediately via the CNC control of the grinding machine.
  • FIG. 5 shows in a view from above a grinding machine which, in its basic arrangement, corresponds to a universal grinding machine and is set up to carry out the method according to the invention.
  • a guide carriage 21 On the machine bed 17 of this grinding machine, a guide carriage 21 is arranged, which can be moved in the direction 28 (X direction) on the machine bed 7.
  • a wheel spindle 22 On the guide carriage 21 is a wheel spindle 22, which in turn carries a first grinding spindle 23 with a first grinding wheel 24 and a second grinding spindle 25 with a second grinding wheel 26.
  • the wheelhead 22 can be pivoted on the guide carriage 21 about a vertical pivot axis 27 (B axis).
  • the grinding wheels 24 and 26 of the grinding spindles 23, 25 can thereby bring in and out of operative position.
  • a grinding table 29 is arranged, which can be moved in the direction 30 (Z1 -axis).
  • On the grinding table 29 of the workpiece headstock 1 is movably constructed, which has a chuck 2 for receiving the round bar 3 in the manner already described.
  • the electric motor driven workpiece headstock 1 has a central center axis, which is at the same time the axis of rotation of the chuck 2 and the longitudinal axis of the clamped round rod 3. This is already introduced with reference to FIG. 1 common center axis 4 (Z2 axis).
  • the arrangement is designed such that the axes 30 and 4 run parallel to each other and that the workpiece headstock 1 can be moved on the grinding table 29 independently of this in the direction of the common center axis 4.
  • the direction of movement 28 of the guide carriage 21 is directed substantially perpendicular to the two axes 29 and 4 and thus corresponds to the feed direction 7 of FIG. 1.
  • 31 denotes protective covers in the form of bellows, which hold the slide tracks of the grinding table 29 and the workpiece Cover headstock 1.
  • the state shown in Figure 5 corresponds to the process step of the loading.
  • the round rod 3 is to be inserted with its left in Figure 5 end in the chuck of the workpiece headstock 1.
  • the opposite right end of the round bar 3 is placed on the upwardly pivoted Vorabiageprisma 10, as shown in Figure 3 can be seen.
  • a slight pressure on the end face of the round rod 3 is exercised by the longitudinal stop 1 1.
  • the contact pressure comes about through a pressure element, here a sprung pressure element in the chuck.
  • the workpiece headstock 1 is moved to the process of loading on a theParknread the round bar 3 associated distance in its direction of movement 30 to the left.
  • the guide carriage 21 is moved in its trajectory 28 forward until the first grinding wheel 24 of first grinding spindle 23 is delivered to the round bar 3.
  • the workpiece spindle head 1 has meanwhile set the round rod in rotation, so that the process of cylindrical grinding by the rotating first grinding wheel 24 can begin.
  • the workpiece headstock 1 is moved continuously in its movement path 30 to the left.
  • the steady rest 9 can now be set on the workpiece 3 for its support. Referring to FIG. 1, it is clear that, to the right of the grinding wheel 5, the uncut portion 3a of the round bar 3 lies, while the steady rest 9 supports the ground portion 3b to the left of the grinding wheel 5.
  • the grinding process is continued, until the entire of the chuck 2 outstanding length of the round rod 3 is ground.
  • the round rod 3 is thereby effectively pulled from right to left through the bezel 9 and is always safely supported and centered. It is preferably ground in peeling process.
  • the lunette jaws 19, the feeler members 14 and the Vorablagepris- 10 are in this case in the position shown in Figures 1 and 2.
  • the diameter of the round rod 3 is thereby reduced from the initial diameter DO to the final diameter D1 (see Figure 1), wherein continuously with the measuring head 13 of the diameter reached is measured and corrected and the rest of the round rod 3 by the bezel 9 self-centering close to the Grinding wheel 5 and 24 is supported.
  • the grinding machines according to Figures 5 and 7 are characterized by special movement and adjustment between the workpiece spindle head 1 and the common assembly of bezel 9, Vorablageprisma 10 and measuring head 13.
  • This mobility results from the fact that the workpiece spindle head 1 is arranged to be movable on the already movable grinding table 29 itself. It is also the reverse arrangement conceivable, namely that the workpiece spindle head 1 is fixedly connected to the grinding table 29, while said common unit can be moved, for example, on the already mentioned common base 8 in addition to the grinding table 29.
  • This double Agility does not only have an advantageous effect on the grinding process itself, but also on the important loading and unloading processes.
  • a workpiece is produced from a round bar 3 by grinding, in which a cylindrical section 32 of larger diameter D1 A is connected to a further cylindrical section 33 of smaller diameter D1 B via a conical connecting section 34.
  • a contour can also be produced by the method according to the invention and the associated grinding machines.
  • the properties of the automatically trailing, self-centering steady rests 9 are exploited, the lenticular jaws 19 of which automatically adapt to the changed grinding diameter.
  • the lunette jaws 19 may be provided with wear plates which may be polycrystalline diamond (PCD) or cubic centered drill nitride (CBN). These wear plates are crowned in the direction of the longitudinal axis of the resulting workpiece.
  • PCD polycrystalline diamond
  • CBN cubic centered drill nitride
  • tapered constrictions on the workpiece can be ground in the same process as diameter grinding.
  • the generatrix of the tapered transition section 34 may be rectilinear or curved. It should be explained with reference to FIG. 9 that workpieces with graduated diameter regions can also be ground with the method according to the invention.
  • the region 32 of larger diameter D1 A is ground by the basic method, whereby a little more than the desired length L of this section 32 is achieved, cf.
  • the longitudinal feed of the grinding (see the directional arrow 16) is stopped and the grinding wheel 5 is lifted from the round bar 3 by a small amount.
  • the bezel 9 is then reset against the feed direction 16 with respect to the grinding wheel 5, so that the grinding wheel 5 and the lunette jaws 19 face each other, cf. the dashed line with 5 'and 19'.
  • the grinding wheel 5 is again delivered to the round bar 3 until a smaller diameter D1 B is reached. This is made possible by using a trailing bezel 9; ie the lunette jaws 19 are self-centering during the delivery of the grinding wheel 5 to the smaller workpiece diameter. By doing so, the round bar 3 is continuously supported.
  • the grinding wheel 5 After the grinding wheel 5 has been fed to the smaller diameter to be ground, it can be further ground in the procedure already described. It is thus again set the axial distance between the lunette jaws 19 and the grinding wheel 5.
  • the round rod 3 is now guided along again in the usual manner on the grinding wheel 5 in the longitudinal grinding feed.
  • This procedure is only possible Lich because the already described double mobility of workpiece headstock 1 and grinding table 29 is given. Furthermore, this procedure is bound to the fact that the changes in the diameter remain in the grinding, so the maximum cutting depth for the grinding wheel during peeling grinding is not exceeded. If this is the case, the workpiece is ground in several cuts to finished size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne une machine de rectification cylindrique dans laquelle une barre ronde (3) à rectifier par écroûtage est serrée dans le mandrin de serrage (2) d'une poupée porte-pièce (1) de sorte qu'une rotation a lieu autour de l'axe central commun (4). La barre ronde (3) est tirée dans le sens de la flèche de direction (16) le long d'une meule (5) rotative montée de manière stationnaire. Une lunette (9) est associée latéralement de manière fixe à la meule (5) conjointement avec une tête de mesure (13) et un prisme de pré-appui (10). La lunette postérieure, se réglant de manière autonome et se centrant automatiquement, veille à ce que les mâchoires (12) de lunette reposent continuellement sur la région (3b) de la barre ronde (3) déjà meulée par la meule d'écroûtage. Le prisme de pré-appui (10) facilite le chargement de la machine de rectification cylindrique.
PCT/EP2010/070178 2009-12-21 2010-12-20 Procédé de rectification cylindrique de barres rondes longues et minces et machine de rectification cylindrique pour mettre en oeuvre le procédé comprenant une lunette postérieure à autocentrage WO2011085913A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201080057997.4A CN102666008B (zh) 2009-12-21 2010-12-20 用于圆形研磨长的、薄的圆棒的方法
RU2012131132/02A RU2540284C2 (ru) 2009-12-21 2010-12-20 Способ круглого шлифования длинных тонких круглых стержней
EP10800733.7A EP2516109B1 (fr) 2009-12-21 2010-12-20 Procédé de rectification cylindrique de barres rondes longues et minces et machine de rectification cylindrique pour mettre en oeuvre le procédé comprenant une lunette postérieure à autocentrage
ES10800733T ES2431513T3 (es) 2009-12-21 2010-12-20 Procedimiento para rectificación cilíndrica de barras redondas largas y finas y máquina de rectificación cilíndrica para la realización del procedimiento con una luneta posterior de autocentrado

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009059897.9 2009-12-21
DE200910059897 DE102009059897B4 (de) 2009-12-21 2009-12-21 Verfahren zum Rundschleifen von langen, dünnen Rundstangen und Rundschleifmaschine zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2011085913A1 true WO2011085913A1 (fr) 2011-07-21

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ID=43824440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/070178 WO2011085913A1 (fr) 2009-12-21 2010-12-20 Procédé de rectification cylindrique de barres rondes longues et minces et machine de rectification cylindrique pour mettre en oeuvre le procédé comprenant une lunette postérieure à autocentrage

Country Status (6)

Country Link
EP (1) EP2516109B1 (fr)
CN (1) CN102666008B (fr)
DE (1) DE102009059897B4 (fr)
ES (1) ES2431513T3 (fr)
RU (1) RU2540284C2 (fr)
WO (1) WO2011085913A1 (fr)

Cited By (6)

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JP2014097535A (ja) * 2012-11-13 2014-05-29 Shigiya Machinery Works Ltd 振止め装置を有する工作機械
WO2015136081A1 (fr) * 2014-03-14 2015-09-17 Erwin Junker Grinding Technology A.S. Procédé et dispositif de rectification de grands vilebrequins
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CN114888689A (zh) * 2022-05-19 2022-08-12 合肥国际应用超导中心 一种用于高温超导带材焊制导体的外型削磨装置
CN114888632A (zh) * 2022-05-24 2022-08-12 大连船用柴油机有限公司 大型卧车中心架的找正方法

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CN110170908B (zh) * 2019-03-28 2024-03-22 北京百慕合金有限责任公司 砂轮切割设备及切割方法
CN110103124B (zh) * 2019-03-28 2024-03-22 北京百慕合金有限责任公司 砂轮片装置、砂轮切割设备及切割方法
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CN103128614A (zh) * 2011-11-28 2013-06-05 株式会社捷太格特 实际进刀量测定方法、加工方法以及机床
EP2596909A3 (fr) * 2011-11-28 2013-12-04 Jtekt Corporation Procédé de mesure de profondeur de meulage réel, procédé d'usinage et machine-outil
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CN103128614B (zh) * 2011-11-28 2017-08-04 株式会社捷太格特 实际进刀量测定方法、加工方法以及机床
EP2682229A3 (fr) * 2012-07-02 2016-03-23 Fritz Studer AG Machine-outil, notamment ponceuse, et procédé d'usinage de pièces par enlèvement de copeaux
JP2014097535A (ja) * 2012-11-13 2014-05-29 Shigiya Machinery Works Ltd 振止め装置を有する工作機械
WO2015136081A1 (fr) * 2014-03-14 2015-09-17 Erwin Junker Grinding Technology A.S. Procédé et dispositif de rectification de grands vilebrequins
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CN114888689A (zh) * 2022-05-19 2022-08-12 合肥国际应用超导中心 一种用于高温超导带材焊制导体的外型削磨装置
CN114888632A (zh) * 2022-05-24 2022-08-12 大连船用柴油机有限公司 大型卧车中心架的找正方法

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CN102666008B (zh) 2014-10-29
ES2431513T3 (es) 2013-11-26
EP2516109A1 (fr) 2012-10-31
DE102009059897A1 (de) 2011-06-22
EP2516109B1 (fr) 2013-09-11
RU2012131132A (ru) 2014-01-27
DE102009059897B4 (de) 2013-11-14
RU2540284C2 (ru) 2015-02-10
CN102666008A (zh) 2012-09-12

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