US20160176010A1 - Grinding machine having a grinding tool for generating grinding of two workpieces - Google Patents

Grinding machine having a grinding tool for generating grinding of two workpieces Download PDF

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Publication number
US20160176010A1
US20160176010A1 US14/969,494 US201514969494A US2016176010A1 US 20160176010 A1 US20160176010 A1 US 20160176010A1 US 201514969494 A US201514969494 A US 201514969494A US 2016176010 A1 US2016176010 A1 US 2016176010A1
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United States
Prior art keywords
workpiece
axis
tool
spindle
grinding
Prior art date
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Abandoned
Application number
US14/969,494
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English (en)
Inventor
Felix Bucksch
Isabell Gleixner
Christian Brieden
Leif Heckes
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.)
Klingelnberg AG
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Klingelnberg AG
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Filing date
Publication date
Application filed by Klingelnberg AG filed Critical Klingelnberg AG
Assigned to KLINGELNBERG AG reassignment KLINGELNBERG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Gleixner, Isabell, BUCKSCH, FELIX, Brieden, Christian, Heckes, Leif
Publication of US20160176010A1 publication Critical patent/US20160176010A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F1/00—Making gear teeth by tools of which the profile matches the profile of the required surface
    • B23F1/02—Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
    • B23F1/023—Making gear teeth by tools of which the profile matches the profile of the required surface by grinding the tool being a grinding worm
    • 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
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/02—Loading, unloading or chucking arrangements for workpieces
    • B23F23/04—Loading or unloading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
    • B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
    • B23F5/04—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B23Q1/623—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair followed perpendicularly by a single rotating pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
    • B23Q39/028—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of workholder per toolhead in operating position
    • 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
    • B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts
    • 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
    • B24B41/02—Frames; Beds; Carriages

Definitions

  • the subject matter of the invention is a device for generating grinding, which comprises two workpiece spindles.
  • Machines which are based on a tool exchange, to be able to provide the suitable tool in each case for machining a workpiece depending on the machining phase.
  • Such machines can have a tool revolver, for example, which is rotatable.
  • Other machines operate with workpiece axes which are arranged so they are pivotable.
  • a machine according to EP 2305409 B1 comprises two workpiece spindles, which are pivoted about a respective pivot axis for the purpose of movement from a grinding position to a loading position and vice versa.
  • Another type of machine has one grinding tool and at least two workpiece spindles, which are mounted so they are rotatable on a carrier. Depending on the rotational position of the carrier, either a first or a second workpiece can be machined using the grinding tool.
  • Such a machine is known, for example, from EP 1146983 B1.
  • Another machine has at least one tool spindle having grinding tool and two workpiece spindles, which can be moved individually toward the tool spindle for the interaction of the respective workpiece with the grinding tool.
  • each of the tool spindles is movable in a translational manner along a separate linear guide from a grinding position to a loading position and vice versa.
  • An object of the present invention is to develop a machine configuration for a grinding machine for machining gearwheels, which, with a simple technical/mechanical structure, has a reproducible high precision of the grinding machining and nonetheless a high throughput.
  • it relates to providing a grinding machine for the generating grinding of spur gears, which enables a uniform high precision of the alternating grinding machining of multiple workpieces.
  • FIG. 1 shows the elements of an exemplary grinding machine 10 , wherein in this illustration only the essential elements are identified, specifically these are the tool spindle 1 together with a grinding tool 2 , a workpiece spindle 3 having a workpiece W 1 , and a workpiece spindle 4 having a workpiece W 2 .
  • the six axes which are required for the generating grinding of the workpiece W 1 or the workpiece W 2 are shown in this illustration. Three linear axes X, Y, and Z are used here.
  • the tool spindle 1 together with the grinding tool 2 can be pivoted about a pivot axis A.
  • an axis of rotation C 1 to be able to rotationally drive the workpiece W 1
  • an axis of rotation C 2 to be able to rotationally drive the workpiece W 2 . It can be recognized on the basis of FIG. 1 that an entire array of coordinated linear, rotational, and pivot movements are required to be able to perform generating grinding of a workpiece W 1 or a workpiece W 2 using a grinding tool 2 .
  • a strong spindle drive is required for rotationally driving the grinding tool 2 about the tool axis of rotation B.
  • the motor which is used as the spindle drive is seated coaxially to the tool axis of rotation B, directly in the region of the grinding tool 2 , as shown in FIG. 1 . If one wished to arrange this motor differently, for example, an angular gear would have to be provided between the motor and the spindle axis B.
  • the occurring rolling deviations typically result in vibrations, which finally results in inaccuracies on the workpiece.
  • the structural size of the motor for rotationally driving the grinding tool 2 is accompanied by spatial restrictions, since a collision of the motor with the workpiece has to be avoided in every case. For example, if one wished to arrange the workpiece W 2 on the right adjacent to the first workpiece W 1 in the machine 10 according to FIG. 1 , as shown here solely as an example, the grinding tool 2 together with spindle 1 could hardly still be moved toward the first workpiece W 1 , without the spindle 1 colliding with the second workpiece W 2 .
  • a grinding machine which is equipped with a tool spindle for receiving and rotationally driving a grinding tool about a tool axis of rotation and with a first workpiece spindle for receiving a first workpiece and with a second workpiece spindle for receiving a second workpiece.
  • the first workpiece spindle and the second workpiece spindle are arranged on one longitudinal side of the grinding tool received on the tool spindle.
  • Both workpiece spindles are arranged parallel to one another (and vertically in relation to a machine bed).
  • the tool spindle is mounted so it is displaceable along a first linear guide, wherein this guide extends in parallel to a horizontal inclined axis.
  • the first workpiece spindle and the second workpiece spindle are spaced apart with the same perpendicular horizontal distance from this horizontal inclined axis.
  • the tool axis of rotation forms, according to certain embodiments, together with the horizontal inclined axis in a horizontal projection, an acute angle which is greater than 0°.
  • the acute angle is in the angle range between 10 and 60° in various embodiments.
  • the grinding machine In contrast to known machines, which are designed for machining two workpieces using one tool, the grinding machine according to certain embodiments has a first horizontally extending linear axis (also called the horizontal inclined axis) which is set inclined in relation to the other (horizontal) axes of the machine.
  • the two workpiece spindles are also accordingly arranged inclined.
  • the first horizontally extending linear axis and the shared perpendicular of the two workpiece spindles are parallel to one another. It is an advantage of this unusual arrangement and axis configuration that in both machining positions, the cantilever arm length, which results by way of the infeed of the tool in parallel to the infeed axis in the direction of the workpiece, is equal. It is thus ensured that the manufacturing accuracy during the machining of the two workpieces is equal.
  • this configuration may offer more space for the drive of the tool spindle.
  • a first workpiece is machined on a first workpiece spindle and subsequently another workpiece is machined on a second workpiece spindle using a single (grinding) tool.
  • a movable part of the machine together with the (grinding) tool mounted thereon executes a linear displacement, to move the (grinding) tool from a first machining position on the first workpiece into a second machining position on the second workpiece.
  • the machine may be designed in certain embodiments so that the machine can be automatically or semiautomatically charged with the workpieces.
  • the tool carries out the machining of the second workpiece.
  • the first workpiece can be removed and replaced by another workpiece (which is still to be machined).
  • the second workpiece can be removed and chucked again, while the first workpiece is machined.
  • the machine is equipped with a handling device for introducing and/or removing workpieces
  • the (grinding) tool does not have to be re-chucked.
  • the first workpiece spindle and the second workpiece spindle are designed to be stationary in relation to the grinding machine.
  • the machine may include handling means for each of the workpiece spindles, to be able to execute the corresponding handling movements in conjunction with the introduction (charging) and/or removal of the workpieces.
  • the term stationary permits only movements in or on the workpiece spindles, which are required in conjunction with the handling of the workpieces.
  • Each workpiece spindle in the scope of the handling, can chuck a workpiece (i.e., the workpiece spindle can open and close) and it can rotate the tool about the workpiece axis, for example.
  • the workpiece spindles are fixed in relation to the machine bed in various embodiments, so that no displacement or shifting of the workpiece spindles in a horizontal plane is possible.
  • infeed movements are required, and to move the grinding tool into an interaction with the respective workpiece and to create the desired (tooth) geometry, engagement and machining movements are necessary.
  • These infeed, engagement, and machining movements are primarily executed by the tool and the axes which are associated with the tool, wherein the workpiece is rotationally driven about the workpiece axis of rotation.
  • the machine configuration may be suitable for the alternating continuous generating grinding of two workpieces.
  • Continuous generating grinding is a generating method, in which a worm grinding wheel is used.
  • the machine configuration may offer the possibility of achieving good accuracy in the grinding machining, since the grinding machining is performed on both workpieces using the same grinding conditions.
  • the workpieces can be ground in synchronization or counter-rotation.
  • the grinding machines can be equipped in various embodiments with digital drive technology, both for the spindles and also the linear axes. Extremely high repetitive accuracies thus result.
  • a chronologically alternating workpiece change may be performed in various embodiments.
  • the corresponding handling time is to be shorter in this case than the total time which is required for the movement of the tool from the first workpiece to the second workpiece and for machining the second workpiece.
  • FIG. 1 shows a schematic perspective view of a conventional grinding machine, which is designed to perform grinding machining of a workpiece using a grinding tool;
  • FIG. 2A shows a schematic top view of a first grinding machine, which is designed to machine a first workpiece and subsequently a second workpiece using one grinding tool, wherein at the moment shown, the grinding tool is located in the region of the first workpiece (referred to as first machining position);
  • FIG. 2B shows a schematic top view of the first grinding machine, wherein at the moment shown, the grinding tool is located in the region of the second workpiece (referred to as second machining position);
  • FIG. 3 shows a schematic horizontal projection of the relevant axes of a grinding machine
  • FIG. 4 shows a schematic front view of a second grinding machine, which is constructed similarly as the grinding machine according to FIGS. 2A and 2B ;
  • FIG. 5 shows a schematic top view of a further grinding machine, wherein the grinding machine comprises a handling device.
  • a grinding machine 100 is equipped with a tool spindle 1 for receiving and rotationally driving a grinding tool 2 about a tool axis of rotation B (also referred to as tool axis in short). Furthermore, the grinding machine 100 comprises a first stationary workpiece spindle 3 for receiving a first workpiece W 1 and a second stationary workpiece spindle 4 for receiving a second workpiece W 2 .
  • the first axis of rotation C 1 , with which the first workpiece W 1 is associated, and the second axis of rotation C 2 , with which the second workpiece W 2 is associated, are perpendicular to the plane of the drawing of FIGS. 2A and 2B .
  • the structure in various embodiments can also be such that the workpiece axes are arranged horizontally instead of vertically (as shown in FIGS. 2A and 2B ).
  • the first workpiece spindle 3 is designed for receiving a first workpiece W 1 and the second workpiece spindle 4 is designed for receiving a second workpiece W 2 .
  • the first workpiece spindle 3 and the second workpiece spindle 4 are arranged on a shared longitudinal side of the grinding tool 2 received on the tool spindle 1 . This longitudinal side is to the right of the cylindrical grinding tool 2 in the top view shown.
  • carriages and other elements of the machine 100 are located, which mount and move the grinding tool 2 .
  • the two workpiece spindles 3 , 4 are arranged vertically.
  • the axes of rotation C 1 and C 2 may extend in parallel to one another in various embodiments, as can be seen well in FIG. 4 .
  • the tool spindle 1 is mounted so it is displaceable along a first linear guide 5 .
  • a first linear guide 5 In FIGS. 2A and 2B , two guide structures extending in parallel are shown. In various embodiments, for example, rails or grooves can be used as linear guides in a known manner.
  • the first linear guide 5 extends in parallel to a first horizontal axis Y.
  • the horizontal inclined axis Y is arranged inclined to other horizontal axis, however (see also FIG. 3 ), or is arranged inclined in relation to axes which have been projected in a shared horizontal plane, respectively.
  • the machine 100 comprises a tool axis of rotation B, about which the (grinding) tool 2 is rotationally driven during the generating grinding.
  • This tool axis B forms, together with the first horizontal axis Y in a horizontal projection, an acute angle W which is greater than 0°.
  • a corresponding illustration of the relevant axes is shown in FIG. 3 .
  • the mentioned acute angle W is defined at the point of intersection of the two axes B and Y in a horizontal projection (the plane of the drawing here).
  • the acute angle may be in the angle range between 10 and 60°. In the exemplary embodiment shown in FIG. 2A and FIG. 3 , the acute angle W is approximately 15°.
  • the first workpiece spindle 3 and the second workpiece spindle 4 are both spaced apart at the same perpendicular horizontal distance al from the first horizontal axis Y (see also FIG. 3 ).
  • the shared perpendicular between the axes of rotation C 1 and C 2 extends in parallel to the first horizontal axis Y.
  • the orientation of the shared perpendicular is shown by a dashed straight line, which connects the two parallel axes of rotation C 1 and C 2 to one another on the shortest path.
  • the corresponding dashed straight line is identified with the reference sign YII, to indicate that it extends in parallel to Y.
  • the shared perpendicular between the axes of rotation C 1 and C 2 defines the distance Ab, which is shown in FIG. 3 .
  • the distance Ab of the two axes of rotation C 1 and C 2 may fulfill the specification in various embodiments that it is at least two times as great as the workpiece diameter of the workpieces W 1 , W 2 viewed in the top view.
  • FIGS. 2A and 2B A differentiation is made between a main axis and secondary axes.
  • An axis which bears all other axes is referred to as the main axis.
  • the Y axis is used as the main axis in each case. This axis is also referred to as the horizontal inclined axis Y.
  • the machine 100 can be transferred from a first machining position into a second machining position by a linear movement along the horizontal inclined axis Y.
  • the machine 100 is shown in the first machining position in FIG. 2A and in the second machining position in FIG. 2B . It can be seen in the direct comparison of the two FIGS. 2A and 2B that these two machining positions are identical, except for the different location in relation to the Y axis. That is to say, no other axial movements have to be executed. Therefore, the cantilever arm is the same in both machining positions. Therefore, inter alia, the torques, which act as a result of the heavy motor of the tool spindle 1 on the overall structure of the machine 100 , are also equal.
  • the machine 100 comprises a machine bed 6 , on which the first linear guide 5 and the two workpiece spindles 3 , 4 are arranged so they are stationary.
  • a fixed machine substructure or column is referred to as the machine bed 6 in various embodiments, as is well known.
  • the grinding machine 100 furthermore comprises a first linear carriage 7 , which is mounted so it is movable along the first linear guide 5 in parallel to the horizontal inclined axis Y.
  • the first linear guide 5 comprises two guide structures shown as examples, which are marked with the reference sign 5 .
  • Guide shoes can be arranged on the lower side of the first linear carriage 7 , to enable sliding of the first linear carriage 7 along the guide structures.
  • These guide structures extend in parallel to the above-mentioned horizontal inclined axis Y. This horizontal inclined axis Y is used as the main axis of the grinding machine 100 .
  • the grinding machine 100 furthermore comprises a second (e.g., tower-like or column-like) linear carriage 8 , which is mounted so it is horizontally movable on the first linear carriage 7 .
  • the second linear carriage 8 is movable in parallel to a second horizontal axis X.
  • This second horizontal axis X is also referred to as the infeed axis and it extends, viewed in a horizontal projection, inclined in relation to the first horizontal axis Y.
  • the second linear carriage 8 can be guided, for example, along guide structures, which are identified here with the reference sign 12 .
  • Guide shoes can be arranged on the lower side of the second linear carriage 8 , to enable sliding of the second linear carriage 8 along the guide structures 12 .
  • the grinding machine 100 furthermore comprises a third linear carriage 9 , which is mounted so it is movable on the second linear carriage 8 in the exemplary embodiment shown.
  • the third linear carriage 9 is movable in parallel to a first vertical axis Z, which stands vertically in space.
  • the first vertical axis Z is also referred to as the stroke axis.
  • the third linear carriage 9 is seated here in the exemplary embodiment shown on a front lateral surface of the second linear carriage 8 . A view of this front lateral surface of the second linear carriage 8 is shown in the front view of FIG. 4 .
  • the grinding machine 100 furthermore comprises a pivot table 10 , which is mounted so it is pivotable about a third horizontal axis A.
  • the third horizontal axis A is also referred to as the tool pivot axis.
  • the pivot table 10 directly or indirectly carries the tool spindle 1 .
  • the third horizontal axis A is perpendicular, projected in a shared horizontal plane, to the tool axis of rotation B.
  • the end face 2 . 1 of the cylindrical tool 2 shown as an example points diagonally upward.
  • the tool 2 shown as an example is a worm grinding wheel, which is not shown in greater detail in the figures, however.
  • the pivot table 10 may carry a fourth linear carriage 11 in various embodiments.
  • the corresponding axis is referred to as the shift axis or as the Y 1 shift axis.
  • This Y 1 shift axis is located on the pivot axis A and carries the tool spindle 1 .
  • the Y axis is only used for the horizontal movement between the two working positions and only the Y 1 shift axis (having lesser mass) has to be used for so-called shift movements.
  • This fourth linear carriage 11 enables a linear displacement (shift movement) of the tool spindle 1 together with tool 2 in parallel to the tool axis B in a lateral plane.
  • a plane which is perpendicular to the machine bed 6 or to the plane of the drawing is referred to as a lateral plane. This lateral plane is in the plane of the drawing in FIG. 4 .
  • FIG. 4 differs from the embodiment of FIGS. 2A, 2B primarily by way of the structure of the secondary axes, which are carried by the pivot table 10 .
  • the carriage 8 can be vertically movable in a lateral plane and can carry a carriage 9 , which is movable on the carriage 8 in the horizontal direction.
  • the fourth linear carriage 11 can also have a configuration as shown in FIG. 4 .
  • the fourth linear carriage 11 can have a basic shape (for example, rectangular) or can have a base body 11 . 1 which, as shown in FIG. 4 , is located in a lateral plane of the machine 100 .
  • this lateral plane corresponds to the plane of the drawing.
  • Guide structures can be arranged on the basic shape or the base body 11 . 1 on the front side, which faces toward the workpieces W 1 , W 2 .
  • two guide structures 14 extending in parallel to the B axis are used.
  • the Y 1 shift axis is therefore parallel to the B axis here.
  • Guide shoes can be arranged on the lower side of the tool spindle 1 , to enable sliding of the tool spindle 1 along the guide structures 14 .
  • the machine 100 is thus distinguished in that the tool spindle 1 is mounted via four linear guides 5 , 12 , 13 , 14 and a pivot axis A so it is movable on the machine bed 6 .
  • the mentioned pivot axis A is perpendicular in this case to the first axis of rotation RA 1 of the first workpiece spindle 3 and to the second axis of rotation RA 2 of the second workpiece spindle 4 .
  • the machine 100 may comprise a handling device 20 , which is designed for introducing and/or removing workpieces C 1 /C 2 . Since alternately first a workpiece C 1 is machined on the workpiece spindle 3 and then subsequently a workpiece C 2 is machined on the workpiece spindle 4 using the tool 2 , there is sufficient time to remove a finished machined workpiece and to introduce a new workpiece (for example, a blank) and to chuck it on the corresponding spindle
  • handling device 20 may be designed in various embodiments for alternately removing and introducing a workpiece on a first of the two workpiece spindles 3 and then for removing and introducing a workpiece on a second of the two workpiece spindles 4 .
  • this handling device 20 may be arranged equidistantly (at equal distance viewed in the horizontal direction) to the two workpiece spindles 3 and 4 in various embodiments.
  • FIG. 5 A schematic example of a machine 100 is shown in FIG. 5 , which is equipped with an exemplary handling device 20 .
  • This handling device 20 can have a gantry structure, for example, as shown in FIG. 5 .
  • This gantry structure may extend in parallel to the main axis Y, which extends at an incline, in various embodiments.
  • the handling device 20 can comprise inner lock gates 21 , 22 , which can be displaced upward and downward in parallel to the x axis.
  • these two lock gates 21 , 22 have a trapezoid shape in the top view. The outlines thereof are shown by dashed lines.
  • the lock gate 21 is associated with the workpiece C 1 and the spindle 3 .
  • the lock gate 22 is associated with the workpiece C 2 and the spindle 4 .
  • the lock gate 22 can be closed while the lock gate 21 is open during the machining of the workpiece C 1 using the tool 2 , and vice versa.
  • a gripper of the handling device 20 can be protected from flying chips and coolant.
  • the handling device 20 can additionally or alternatively also comprise outer lock gates (not shown), which can be displaced upward and downward in parallel to the x axis. These outer lock gates may be moved up and down in differential mode to the inner lock gates 21 , 22 .
  • the handling device 20 can comprise counter holders (not shown), which can be displaced upward and downward in parallel to the x axis, to be able to hold the respective workpieces C 1 , C 2 from above in the axial direction.
  • the handling device 20 can comprise a column or tower structure 23 , which is arranged equidistantly to the two workpiece spindles 3 , 4 , and which carries a gripper 24 on a pivotable boom 25 .
  • a snapshot is shown in FIG. 5 , in which the boom 25 together with gripper 24 is concerned with the introduction of a workpiece C 2 into the workpiece spindle 4 .
  • the boom 25 together with gripper 24 is pivoted about a vertical axis VA of the handling device 20 into another position.
  • the vertical axis VA may extend in parallel to the x axis.
  • the boom is identified in this other position with the reference sign 25 * and the boom 25 is indicated by dotted outlines.

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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)
  • Gear Processing (AREA)
  • Feeding Of Workpieces (AREA)
US14/969,494 2014-12-17 2015-12-15 Grinding machine having a grinding tool for generating grinding of two workpieces Abandoned US20160176010A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14198671.1A EP3034221A1 (de) 2014-12-17 2014-12-17 Schleifmaschine mit einem Schleifwerkzeug zum Wälzschleifen zweier Werkstücke
EP14198671.1 2014-12-17

Publications (1)

Publication Number Publication Date
US20160176010A1 true US20160176010A1 (en) 2016-06-23

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US14/969,494 Abandoned US20160176010A1 (en) 2014-12-17 2015-12-15 Grinding machine having a grinding tool for generating grinding of two workpieces

Country Status (7)

Country Link
US (1) US20160176010A1 (zh)
EP (1) EP3034221A1 (zh)
JP (1) JP2016112680A (zh)
KR (1) KR20160073910A (zh)
CN (1) CN105772867A (zh)
MX (1) MX2015016234A (zh)
RU (1) RU2015154033A (zh)

Cited By (2)

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MX2015016234A (es) 2016-08-11
EP3034221A1 (de) 2016-06-22
JP2016112680A (ja) 2016-06-23
RU2015154033A (ru) 2017-06-21
KR20160073910A (ko) 2016-06-27

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