EP2490859A1 - Schleifmaschine sowie verfahren zum schleifen und entgraten - Google Patents
Schleifmaschine sowie verfahren zum schleifen und entgratenInfo
- Publication number
- EP2490859A1 EP2490859A1 EP10768752A EP10768752A EP2490859A1 EP 2490859 A1 EP2490859 A1 EP 2490859A1 EP 10768752 A EP10768752 A EP 10768752A EP 10768752 A EP10768752 A EP 10768752A EP 2490859 A1 EP2490859 A1 EP 2490859A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- workpiece
- grinding wheel
- axis
- grinding machine
- 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.)
- Granted
Links
Classifications
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- 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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
- B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
- B24B19/125—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts electrically controlled, e.g. numerically controlled
-
- 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
- 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
- B24B49/12—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 involving optical means
-
- 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
- B24B5/01—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor for combined grinding of surfaces of revolution and of adjacent plane surfaces on 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
Definitions
- the present invention relates to a grinding machine for grinding a workpiece, in particular of cams, and a method for grinding a workpiece, in particular cams, on a holder.
- a workpiece holding device which has on one side a workpiece headstock, which sets the camshaft in the desired rotation about its longitudinal axis, and on the other side a tailstock, which ensures that the camshaft during the machining is always aligned and centered.
- the grinding wheels or the corresponding grinding spindles are movable within the xz plane relative to the camshaft.
- the z-axis extends parallel to the longitudinal extent of the workpiece, here e.g. the camshaft, and the x-axis as a perpendicular axis, which corresponds to a movement of a tool on the corresponding workpiece from the side to or away.
- a direction perpendicular to the x and z axes is further referred to as the y axis or direction. It therefore runs perpendicular to the machine bed.
- the grinding of the cams directly on the shaft is performed for the purpose of accuracy, so that the cams are formed exactly with respect to the shaft.
- the grinding of individual cams is also becoming more and more popular, as the manufacturers of camshafts now succeed in being able to fit the individual cams very precisely onto a shaft.
- the exact grinding of the individual cams is done individually or as groups of several cams, which are usually processed on a workpiece holder, usually a mandrel, in a grinding machine.
- the present invention is therefore an object of the invention to provide a grinding machine for grinding a workpiece and a method for grinding a workpiece, in which either the burr formation is avoided or the deburring is enabled within the same grinding machine during or after the grinding process.
- a grinding machine for grinding a workpiece in particular cams, with a machine bed, a grinding wheel having a profile with a substantially parallel to the axis of rotation of the grinding wheel grinding area and at least one profile section which is not parallel to the axis of rotation of the grinding wheel runs, a grinding spindle on which the at least one grinding wheel is arranged and which is arranged movably on the machine bed, a control unit for controlling the grinding process, wherein the control unit is configured such that based on position information of positions of edges of Workpiece in the direction of the longitudinal axis of the workpiece during or after grinding of the workpiece, in particular towards the end of the grinding of the workpiece, successively deburred the edges of the workpiece with the at least one profile section of the grinding wheel od he will be chastised.
- the combination of the invention profiled grinding wheels with the control unit according to the invention has the advantage that during the grinding process, preferably towards the end of this grinding process, the corresponding inclined profile section which is not parallel to the axis of rotation of the grinding wheel, passes against the edge of the ground workpiece and Depending on the positioning of the grinding wheel, the burr is mechanically removed from this edge or also the edge of the workpiece is angled.
- the positions of the workpieces and their edges are precisely determined beforehand, so that the alignment of the grinding wheels along the workpieces for these deburring or Fas steps can be optimally adjusted.
- the grinding wheel on a roof profile with two profile sections which are not parallel to the axis of rotation of the grinding wheel and between which a substantially parallel to the axis of rotation of the grinding wheel extending grinding area is arranged.
- “roof profile” here is a cross-section of a grinding wheel that cuts the grinding wheel in a plane that contains both its axis of rotation and a radius to be recognized recess to be understood in the abrasive material.
- the course of this depression is such that from one edge of the grinding wheel, parallel to the axis of rotation in the direction of the other edge of the grinding wheel seen, in front and behind a larger radius of the grinding wheel is present than in an intermediate region, these areas are connected by a not parallel to the axis of rotation of the grinding wheel transition, so that the resulting cross-sectional profile is reminiscent of the shape of a roof.
- the provision of the grinding wheel with two profile sections, which do not run parallel to the axis of rotation of the grinding wheel so that the shape of a roof profile results in cross section, has the advantage that thus two, in particular outer, edges of a workpiece, in particular of cams , deburred or chamfered.
- different displacement positions of the grinding wheels along the z-axis are necessary, so that in one displacement position, the first edge and in a second displacement position, the second edge of the workpiece can be processed.
- the control unit is designed such that it sets both the one and the other displacement position based on the position information of the positions of the edges of the workpiece for the grinding wheel.
- Both the grinding of a workpiece, in particular a cam, and the deburring or chamfering of two edges of a workpiece can be performed in a grinding process by the grinding wheels with the roof profile as well as with the control unit according to the invention.
- the at least one profile section is formed so that reduces the distance from the axis of rotation of the grinding wheel of each point in the profile along the extension of the profile section to the vertex.
- This embodiment has the advantage that the grinding area of the grinding wheel, which is generally arranged in the middle region, is closer to the axis of rotation than the outer edges of the at least one profile section, so that when the grinding wheel is moved in the direction of the z axis while the contact of the grinding wheel is maintained Grinding area with the workpiece ultimately the at least one profile section comes into contact with the edge of the workpiece to be ground.
- This can at least one Then remove profile section according to existing burr and / or chamfer the existing edge of the workpiece.
- the grinding machine on a data input for receiving the position information.
- a data input by the grinding machine for recording the position information has the advantage that it is thus possible to transmit the determined position data of the workpieces directly into the grinding machine, where they are then made available to the control unit independently. Complex inputting or transferring the data in other ways is therefore not necessary, which allows a higher enforcement speed and automation.
- the grinding machine has a measuring device for determining the position information.
- a measuring device for determining the position information. This has the advantage that the workpieces to be machined need not be extra transferred to a separate device to be measured thereon, whereupon the data must then be adapted and transmitted.
- the measuring device is accordingly adapted to the spatial conditions within the grinding machine and is able to determine the corresponding positions in a suitable form.
- the measuring device is designed to determine the position information contactless, in particular by distance determination by means of laser or an initiator. This has the advantage that this position or distance determination is comparatively fast. In contrast, a mechanical scanning of the workpieces would be very slow. For example, a laser makes it possible to determine all necessary position data in the sub-second range by simply and quickly scanning or scanning the workpieces to be processed.
- the workpieces are received on a holder and the measuring device is configured to determine at least a first position relative to a longitudinal stop of the holder of the workpieces. This is advantageous in that there is always a fixed mechanical reference at which the workpiece or the workpiece holder can be aligned during clamping in the grinding machine.
- this longitudinal stop is applied there, for example, to a fixed mechanically predetermined point in the grinding machine, so that in the sequence the determined positions can also be seen as a distance from this fixed mechanical stop in the machine. Further determining the position of the workpieces within the grinding machine in addition to the relative position data is eliminated, which further simplifies the grinding process.
- the measuring device is configured to determine all positions relative to the longitudinal stop of the holder of the workpieces.
- This position determination has the advantage for the grinding process that the control unit according to the invention thus has absolute data on all workpieces, so that each workpiece can be approached individually, which increases the flexibility of the grinding machine according to the invention in the form of their possible grinding processes.
- the measuring device is configured to determine the remaining positions relative to each other.
- the relative position indication is advantageous for the grinding process of the grinding machine according to the invention if the control unit according to the invention activates the grinding machine or the corresponding grinding wheels in such a way that the workpieces are to be processed one after the other. For this purpose, the grinding machine then only requires data as it passes from one workpiece to the next. There are then no further calculations necessary, so that a simple displacement of the grinding wheels or grinding spindles can be done on the basis of the position data in the form of relative information.
- the measuring device is arranged outside of an interior of the grinding machine.
- the arrangement in particular as a separate device away from the grinding devices, has the advantage that the measuring process for determining the position information can take place as a time-neutral element in the entire process sequence of grinding. This is because the measurement, or the determination of the position information of a workpiece, for example a camshaft, can take place simultaneously with an ongoing grinding operation within the grinding machine. Once this grinding process has been completed, the workpiece, which has already been measured in the meantime, can be inserted directly into the now ready grinding machine and ground and processed on the basis of the parallel position information. An idle time, in which the grinding machine can not operate because a measurement of the workpieces takes place, is therefore not available.
- the measuring device is disposed within an interior of the grinding machine.
- Both measuring device and grinding machine are arranged in a space in the grinding machine, wherein the measuring device in particular carries out the determination of the position information on a workpiece already clamped in the grinding machine. This minimizes the errors that can occur in transferring the workpieces from an external measuring device into the grinding machine, since the position information here relates directly to the position within the grinding machine and is not relative to a particular section of the workpiece, e.g. incorrect insertion into the grinder may lead to incorrect positions.
- control unit is designed so that the edges of the workpiece with the at least one profile section of the grinding wheel deburred or chamfered only after 50 to 95%, in particular after 60 to 80% of the total processing time.
- the advantage of this embodiment of the control unit according to the invention is that so initially the general Grinding can take place with the grinding area of the grinding wheel, without an additional interaction between the inclined profile sections and the workpiece takes place. Namely, such an interaction also means a higher load for the corresponding inclined profile sections and consequently a higher material abrasion and wear on the grinding wheel. Since arranging the at least one profile section on the edge of the workpiece to be ground is particularly concerned with removing the burr formed or by chamfering this edge, a relatively short contact between the at least one profile section and the corresponding edge of the workpiece is sufficient.
- the workpiece is preferably first placed in the central area of the grinding wheel, i. in the grinding area, without any interaction between the inclined profile sections with the edges.
- the Entgratungs- or Anfas suits thus takes place advantageously only towards the end of the entire grinding process. However, it is still part of the normal grinding process, as the grinding area remains in contact with the workpiece.
- Another object of the present invention is a method for grinding a workpiece, in particular cams, on a holder with a grinding machine according to the previous versions.
- This method comprises the following steps: a) determining the position of the at least one workpiece on the holder, b) passing on the position information to a control unit for controlling the grinding process, c) positioning the grinding wheel for a grinding operation in the direction of the longitudinal axis of the mounting of the at least one workpiece and perpendicular to this longitudinal axis based on the position information,
- this method also includes the following further step: f) moving the grinding wheel in the opposite direction of the longitudinal axis of the holder of the at least one workpiece based on the position information, so that another profile section of the grinding wheel, not parallel to the axis of rotation of the grinding wheel, another edge of the workpiece trimmed or angled.
- This method makes it possible to optimally use the aforementioned grinding machine according to the invention.
- an exact determination of the position of the workpieces is required.
- the grinding wheels are then directly controlled, so that they are optimally aligned for a general grinding operation and towards the end of the grinding process of a workpiece in the direction of the longitudinal axis of the holder of the at least one workpiece, i. in the direction of the z-axis, be moved so that the oblique profile sections deburr both one, preferably also another edge of the workpiece or chamfer this.
- FIG. 1 shows a grinding machine according to the invention in its entirety as a side view
- Fig. 2 is a detail view of a grinding spindle set according to the invention
- 4a and 4b is a side view of a grinding spindle set according to the invention with the respective different positions of the grinding spindles
- 5 is a fragmentary detail view of the grinding machine according to the invention of Figures 1 and 3 in a side view with a suitable for pre-grinding of the workpieces positioning of the grinding spindle sets.
- FIG. 6 is a fragmentary detail view corresponding to FIG. 5 with a
- FIG. 7 shows a schematic side view of a camshaft as a workpiece of the grinding machine according to the invention
- FIG. 9 shows the grinding machine from FIG. 1 with an additional schematic illustration of a measuring device according to the invention, a data input and a control unit, and FIG
- a grinding machine described in more detail below is designated in its entirety by the reference numeral 10 below.
- the grinding machine 10 has a machine bed 12, two grinding spindle sets 14 and 14 ', and a workpiece headstock 16 and a tailstock 18, the in an interior 19 are arranged. Between workpiece headstock 16 and tailstock 18, a workpiece 20 in the form of a camshaft 22 is clamped here.
- This camshaft 22, or generally the workpiece 20 can be rotated by the workpiece headstock 16 and tailstock 18 about its longitudinal axis 24 and is during this movement according to well-known methods by the laterally along the x and z-axis movable grinding spindle sets fourteenth and 14 'machined or ground.
- the grinding spindle sets 14 and 14 ' are both constructed identically in the present case. Their respective construction is illustrated by way of example in FIG. 2 on the basis of the grinding spindle set 14, but applies correspondingly to the grinding spindle set 14 '.
- grinding spindle set 14 and grinding spindle set 14 are the same reference numerals used for the components of the two, each differing only by a dash. Accordingly, although not explicitly mentioned each time, the features for one component of the wheel spindle set 14 apply equally to the corresponding component of the other wheel set 14 'and vice versa, unless otherwise stated.
- the grinding spindle set 14 consists of a first grinding spindle 26 and a second, in this case, smaller grinding spindle 28. These grinding spindles each consist of a spindle block 30 and 32 and a grinding wheel 34 and 36, respectively to grinding disk holders 35 and 37th the grinding spindles 26 and 28, respectively.
- the grinding wheel 34 is configured as a large grinding wheel and the grinding wheel 36 as a comparatively small grinding wheel.
- the grinding spindle 28 may be configured with the grinding wheel 36 is larger or the same size as the grinding spindle 26 with the grinding wheel 34th
- the orientation of the grinding spindle 28 with respect to the grinding spindle 26 is such that the grinding wheels 36 and 34 according to the view of Fig. 2 come to lie one above the other, which manifests itself in relation to the entire grinding machine 10 that the two Abrasive wheels 34 and 36 come to lie within a plane which is perpendicular to a direction of the z-axis.
- the grinding spindles 26 and 26 ' are arranged on a carriage 38 or 38' which is not shown in greater detail in FIG. 2 but can be seen in FIG. 1 and can be moved independently of one another on the machine bed 12 in the x and z directions.
- the grinding spindles 28 and 28 ' are arranged via a carrier 40 on the grinding spindle 26 and 26' in the case shown at the spindle blocks 30 and 30 '.
- This carrier 40 has, as can be seen in Fig. 2, in this case, a sleeve 42 and a holder 44.
- the holder 44 serves for direct reception and attachment of the grinding spindle 28 and thus arranges them on the sleeve 42.
- the collar 42 is configured according to the spindle block 30 of the grinding spindle 26, arranged thereon and mounted pivotably about a rotation axis 46 of the grinding spindle 26.
- the protective flap 47 is likewise pivotable or rotatable about the axis of rotation 46 by being rotatably mounted on an axle 50.
- the latter is connected via a web 52 to the carrier 40, in particular to the holder 44 in the present embodiment.
- the protective flap 47 is also swiveled about the axis of rotation 46 of the grinding spindle 26 when the grinding spindle 28 pivots, so that the region of the grinding wheel 34 facing the viewer is now covered by the protective flap 47 in FIG. This can be seen for example in the plan view of FIG.
- the position of the grinding spindle 28 is present after the pivoting process within the entire grinding machine 10. While in the view of Fig. 1, the position of the grinding spindle 26 and grinding spindle 28 is such that the grinding wheel 34 of the grinding spindle 26 is arranged for machining and grinding of the workpieces 20 freely, is in the position shown in Fig. 3 the Grinding wheel 36 of the grinding spindle 28 with respect to the direction of the x-axis between the workpiece 20 and the larger grinding wheel 34 of the grinding spindle 26. Accordingly, the grinding wheel 36 of the grinding spindle 28 is arranged so that it is used for machining and grinding the workpiece 20, here Camshaft 22, can be used.
- This arrangement of a large grinding wheel 34 for pre-grinding a camshaft 22 and a small grinding spindle 28 pivotally mounted on the grinding spindle 26 of the large grinding wheel 34 has the grinding wheel 36 the advantage that a significant space saving is obtained by this combination.
- the advantages resulting from the arrangement of the grinding wheels 36 and 34 within the aforementioned common spindle plane, which is perpendicular to a direction of the z-axis, are described in more detail below.
- Fig. 4a and 4b illustrate again the principle of the pivotable small grinding wheel 36 relative to the large grinding wheel 34.
- Fig. 4a shows here the state shown in Figs. 1 and Fig. 2, in which the small grinding wheel 36 with the Grinding spindle 28 is disposed above the large grinding wheel 34 with respect to the views of Figs. 1, 2 and 4a and 4b, respectively.
- the large grinding wheel 34 is covered by the protective flap 47 in the right-hand area shown in FIG. 4a, but released in the left-hand area, so that grinding of workpieces, here e.g. a cam 48 of a camshaft 22, can take place.
- the grinding spindle set can be moved by the carriage 38 correspondingly in the x direction and then take place a rotation about the rotation axis 46 of the grinding spindle 26, as indicated here by the double arrow 50.
- the small grinding wheel 36 with the grinding spindle can be used 28 are pivoted back in accordance with the above in reverse, so that again according to the pivoting movement, indicated by the double arrow 50, the small grinding wheel 36 occupies a position above the large grinding wheel 34, as shown in Fig. 4a.
- FIGS. 10a and 10b likewise show an embodiment of the grinding machine 10 corresponding to FIGS. 4a and 4b.
- the grinding wheels 34 and 36 and the protective flap 47 can be seen in their respective positions before and after the pivoting of the grinding spindle 28.
- the grinding machine according to the invention is particularly suitable for placing closely adjacent workpieces on a holder, e.g.
- the cams 48 'and 48 "on the camshaft 22 are simultaneously to be grinded or machined, whereby in each case one of the cams 48' and 48" is guided by a grinding spindle set 14 or 14 '. processed.
- FIG. 5 shows the positioning of the grinding spindle sets in which the cams 48 'and 48 "are pre-ground on the camshaft 22 with the large grinding wheels 34, 34' -Axis are brought together and aligned with each other at the height of a cam 48 ', 48 "so that the large grinding wheels 34, 34' respectively face one of these cams 48 'and 48" with respect to the direction of the z-axis in that subsequent or simultaneous alignment with respect to the x-axis is made so that the grinding wheels 34, 34 'can come into corresponding contact with the cams 48', 48 "so as to perform a grinding operation according to the known methods can.
- the cams 48 as the camshaft 22 rotates about its longitudinal axis take place according to well-known methods and parameters.
- the large grinding wheels 34 and 34 ' can move together in this process of pre-grinding the cams 48' and 48 "except for a few mm in the direction of the z-axis.Thus, a simultaneous pre-grinding of this cam pair 52, which consists of the cams 48th 'and 48 "is made possible.
- the minimum distance between the two grinding wheels 34 and 34 ' is given in the aforementioned collapse in the direction of the z-axis only by the width of the protective flaps 47 and 47'.
- the grinding wheel sets 14 and 14' may be spaced from the camshaft 22 in the x-axis direction, whereupon the grinding spindles 28 and 28 'are engaged with the small grinding wheels 36 and 36 'are pivoted about the axes of rotation 46 and 46' of the grinding spindles 26 and 26 'according to the previously described embodiments, so that the grinding wheels 36 and 36' come to lie above the machine bed at a height, or are spaced therefrom accordingly, the grinding wheels 36 and 36 'can now be used for machining the workpieces 20, in this case the cams 48' and 48 ".
- the orientation of the grinding spindle sets 14 and 14 'in the direction of the x-axis is done according to known methods and with appropriate parameters that the grinding wheels 36 and 36' always the necessary and desired contact with the Workpieces 20, here the cams 48 'and 48 "have, in order to achieve a successful machining and grinding.
- Fig. 7 shows the schematic structure of a camshaft 22 with the shaft 54 on which the cams 48 are arranged.
- two cams 48 'and 48 "always form a cam pair 52.
- This cam pair is characterized in that the associated cams 48' and 48" are relatively close together, at least closer than the distance of one cam pair to another Cam pair, and that the respective cams 48 'and 48 "are identically arranged and aligned within such a pair of cams 52 in their arrangement with respect to rotation about the shaft 54.
- This alignment by the longitudinal stop 56 can thus be used to determine the position of the cam 48 on the shaft 54 to a few pm exactly relative to this longitudinal stop 56.
- This determination can be made so that position information of the cam 48 are determined, all relating to the longitudinal stop 56, or even so that a corresponding cam 48 is described in its position so that the position information on a previous cam 48 on refer to the shaft 54. So could e.g. the position of a cam 48 "of Fig. 7 may be described by the distance to the longitudinal stop 56, or may be indicated as positional information with respect to the previous cam 48 '.
- the necessary for the detection and processing of the position information devices are shown in FIG. 9.
- the measuring device 90 can be arranged both as a separate device outside the grinding machine 10, and be arranged in the interior 19 of the machine, there to make the position determination of the cam 48 directly on the clamped camshaft 22.
- the former variant has the advantage that the positions of the cams can be determined while the grinding machine 10 is already being operated with another grinding operation. Thus, non-productive times caused by the measurement and thus blocking the grinding machine 10 for the grinding process are avoided.
- the other variant with the arrangement of the measuring device 90 within the grinding machine 10 has the advantage that no additional space outside the grinding machine 10 is necessary. In addition, errors that may occur during clamping of the camshaft 22 in the grinding machine 10 and can occur through the displacement of the previously determined position, avoided.
- the determination of the position by the measuring device 90 may according to the invention preferably by non-contact methods, in particular by laser or initiators, take place.
- non-contact methods in particular by laser or initiators
- other methods of non-contact and touching measurement of workpieces known to a person skilled in the art such as e.g. mechanical scanning, conceivable.
- the data determined by the measuring device 90 are forwarded to a data input 92 of the grinding machine 10, as indicated schematically by the arrow 91. From the data input 92, the data then passes, as indicated schematically by the arrow 93, into a data processing 94 of the grinding machine 10.
- the data processing 94 prepares the data according to methods known to a person skilled in the art and subsequently supplies them to a control unit 96, as indicated by the arrow 95.
- the control unit 96 is used for direct control of the grinding wheel sets 14 and 14 '.
- the control of the grinding spindle sets 14 and 14 'by the control unit 96 is indicated schematically in FIG. 9 by the arrows 97 and 97'.
- the arrows 91, 93 and 95 represent the basic course of the position information in accordance with the statements made above.
- the determination of the position information of the individual cams 48 of the camshaft 22 is on the one hand advantageous in that the grinding spindle sets 14 and 14 'due to this position information can be aligned by a control unit not shown in detail here so that a grinding of the cam 48, as indicated for example by FIGS. 5 and 6 and described in the context, can be performed. Since the grinding wheels can not be arbitrarily wide due to the dense moving together of the grinding wheels 34 and 34 'or 36 and 36', which is in the range of 10 mm, a certain accuracy of the position information is already necessary here.
- a grinding wheel 58 can be seen which represents a particular embodiment of the small grinding wheels 36 and 36 ', respectively.
- This grinding wheel 58 is adapted for machining a workpiece 60, for example a cam 48, at this.
- this grinding wheel 58 has a so-called roof profile 64 in its grinding material 62.
- This roof profile 64 is characterized by a depression in the abrasive material 62 in the workpiece 60 facing side. This results in relation to the rotation axis of the grinding wheel 58 not further shown here more peripheral circumferential grinding surfaces 66 and a more inner circumferential grinding surface 68.
- These grinding surfaces 66 and 68 are by oblique, not parallel to the axis of rotation of the grinding wheel 58 aligned profile sections 70 and 72 connected as a transition.
- the roof profile 64 to be seen in the view of FIGS. 8a to 8c results.
- This roof profile 64 thus has through the abrasive material 62 a grinding region 74 which coincides with the inner end 68, and those oblique profile sections 70 and 72 which are suitable for deburring and chamfering, as will be described in more detail below.
- the finish grinding of a workpiece 60 e.g. a cam 48
- this grinding wheel 58 is first aligned with the workpiece 60, that this is preferably processed exclusively by the grinding area 74. This positioning is shown by way of example in FIG. 8a. To successfully achieve this alignment, the position information as described in more detail above is used.
- edges 76 'and 76 "of the workpiece 60 often form a certain amount of burr not shown here in detail.
- the transition from the grinding region 74 into the profile section 70 in the region of a vertex 80 hits the corresponding ridge-tipped edge 76 '. of the workpiece 60.
- This positioning is exemplified in Fig. 8b. This can take place after the actual grinding process or towards the end of the grinding process, in particular at a time which corresponds to approximately 60 to 100% of the total machining time of the individual workpiece. As a result, at the same time, further grinding with the grinding region 74 takes place alongside the deburring or chamfering of the edge 76 'by the profile section 70.
- the grinding wheel 58 is moved in the opposite direction as before, which is indicated by the arrow 82 in Fig. 8b.
- the end position of this method along the direction of the arrow 82 is the position of the grinding wheel 58 on the workpiece 60 shown in FIG. 8 c, whereby only the edge 76 "of the workpiece 60 comes to rest in the area of the vertex 84 between the grinding area 74 and the profile section 72.
- a method according to the invention for grinding such workpieces 60, in particular cams 48 runs so that first the positions of the workpieces 60 on one in Fig. 8a to 8c not shown in detail holder, eg the shaft 54, are determined. This can be done by a measuring device 90. This position information is then forwarded to the control unit 96 of the grinding machine 10, which controls the grinding process and thus also the grinding spindles 26, 26 ', 28 and 28' of the grinding wheel sets 14 and 14 '. If necessary, processing and adaptation of the position information by the data processing 94 can take place beforehand.
- this control unit 96 controls e.g. the grinding spindles 28 and 28 ', or thus indirectly the grinding wheel 58, or e.g. the grinding wheels 36 and 36 ', in the direction of the z-axis and also in the direction of the x-axis on the workpiece 60 to.
- Fig. 8a then first the workpiece 60 is ground by the grinding portion 74 of the grinding wheel 58, whereupon the grinding wheel 58 then according to the previously made in connection with Figs. 8b and 8c in the direction of the z-axis, as it indicated by the arrows 78 and then 82, to deburr the edges 76 'and 76 "of the workpiece 60.
- These steps of the z-axis method are based on the exact position information, as previously stated determined in the first step of determining the position of the workpieces 60.
- the deburring and / or chamfering can be carried out time-neutral in the grinding machine 10, whereby an additional, usually requiring a further machine step for deburring and / or chamfering of the workpieces 60, as previously performed omitted ,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009051586A DE102009051586A1 (de) | 2009-10-20 | 2009-10-20 | Schleifmaschine zum Schleifen und Entgraten |
PCT/EP2010/065468 WO2011048014A1 (de) | 2009-10-20 | 2010-10-14 | Schleifmaschine sowie verfahren zum schleifen und entgraten |
Publications (2)
Publication Number | Publication Date |
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EP2490859A1 true EP2490859A1 (de) | 2012-08-29 |
EP2490859B1 EP2490859B1 (de) | 2013-09-18 |
Family
ID=43640054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10768752.7A Not-in-force EP2490859B1 (de) | 2009-10-20 | 2010-10-14 | Schleifmaschine sowie verfahren zum schleifen und entgraten |
Country Status (7)
Country | Link |
---|---|
US (1) | US8790155B2 (de) |
EP (1) | EP2490859B1 (de) |
JP (1) | JP5612111B2 (de) |
CN (1) | CN102596503B (de) |
DE (1) | DE102009051586A1 (de) |
ES (1) | ES2431623T3 (de) |
WO (1) | WO2011048014A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102847774A (zh) * | 2012-08-20 | 2013-01-02 | 吴江市三达五金工具厂 | 一种双工件去毛刺机构 |
DE102014204807B4 (de) * | 2014-03-14 | 2016-12-15 | Erwin Junker Grinding Technology A.S. | Verfahren und Vorrichtung zum Schleifen von Großkurbelwellen |
CN104339236B (zh) * | 2014-10-30 | 2017-02-08 | 湖北中航精机科技有限公司 | 一种去毛刺机 |
CN105150123A (zh) * | 2015-09-25 | 2015-12-16 | 泰州市宏祥动力机械有限公司 | 用于凸轮去毛刺的砂轮 |
JP6766400B2 (ja) * | 2016-03-28 | 2020-10-14 | 株式会社ニデック | 眼鏡レンズ加工装置、及び眼鏡レンズ加工プログラム |
DE102016012727A1 (de) * | 2016-10-24 | 2018-04-26 | Blum-Novotest Gmbh | Messsystem zur Messung an Werkzeugen in einer Werkzeugmaschine |
CN108057753A (zh) * | 2017-12-18 | 2018-05-22 | 莱纳斯工业设备(苏州)有限公司 | 一种万向滚刷去毛刺机 |
CN110539221A (zh) * | 2019-10-17 | 2019-12-06 | 北京第二机床厂有限公司 | 适应于高精度伺服阀阀芯的磨削同步去毛刺机构及方法 |
CN110977668B (zh) * | 2019-12-25 | 2024-05-24 | 南通德鑫数控机床有限公司 | 一种数控全自动一次成型凸轮轴毛坯打磨机床 |
CN112296788B (zh) * | 2020-11-02 | 2021-09-24 | 电子科技大学中山学院 | 机械加工用金属工件打磨装置及其顶尖结构 |
NO347022B1 (en) | 2021-10-07 | 2023-04-17 | Altus Intervention Tech As | Radial Drilling Unit |
CN114227389B (zh) * | 2021-12-29 | 2023-04-18 | 东风汽车有限公司东风日产乘用车公司 | 凸轮轴磨削方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3724698A1 (de) * | 1987-07-25 | 1989-02-02 | Schaudt Maschinenbau Gmbh | Schleifkopf |
EP0342528A3 (de) * | 1988-05-19 | 1991-04-17 | Fortuna-Werke Maschinenfabrik GmbH | Verfahren zum Schleifen von Nocken einer Nockenwelle |
DE4103090C1 (de) | 1991-02-01 | 1992-08-27 | Erwin 7618 Nordrach De Junker | |
US5829131A (en) * | 1997-11-21 | 1998-11-03 | Chrysler Corporation | Method of making camshaft lobes |
DE10205212A1 (de) * | 2002-02-08 | 2003-08-21 | Heller Geb Gmbh Maschf | Meßeinrichtung für Maschinen zum Bearbeiten von Werkstücken, insbesondere von Kurbelwellen, Nockenwellen |
CH701168B1 (de) | 2007-08-17 | 2010-12-15 | Kellenberger & Co Ag L | Verfahren und Bearbeitungsmaschine zur Behandlung von Werkstücken. |
JP2009154262A (ja) | 2007-12-27 | 2009-07-16 | Musashi Seimitsu Ind Co Ltd | 研削装置 |
JP5277692B2 (ja) * | 2008-03-31 | 2013-08-28 | 株式会社ジェイテクト | ポストプロセス定寸制御装置 |
CN201195276Y (zh) * | 2008-04-30 | 2009-02-18 | 王敏其 | 在线测试数控凸轮磨床 |
-
2009
- 2009-10-20 DE DE102009051586A patent/DE102009051586A1/de not_active Ceased
-
2010
- 2010-10-14 WO PCT/EP2010/065468 patent/WO2011048014A1/de active Application Filing
- 2010-10-14 CN CN201080047515.7A patent/CN102596503B/zh not_active Expired - Fee Related
- 2010-10-14 EP EP10768752.7A patent/EP2490859B1/de not_active Not-in-force
- 2010-10-14 JP JP2012534635A patent/JP5612111B2/ja not_active Expired - Fee Related
- 2010-10-14 ES ES10768752T patent/ES2431623T3/es active Active
-
2012
- 2012-04-20 US US13/452,499 patent/US8790155B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011048014A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2013508176A (ja) | 2013-03-07 |
ES2431623T3 (es) | 2013-11-27 |
DE102009051586A1 (de) | 2011-04-28 |
US8790155B2 (en) | 2014-07-29 |
JP5612111B2 (ja) | 2014-10-22 |
CN102596503A (zh) | 2012-07-18 |
WO2011048014A1 (de) | 2011-04-28 |
US20120252316A1 (en) | 2012-10-04 |
CN102596503B (zh) | 2015-07-15 |
EP2490859B1 (de) | 2013-09-18 |
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