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DE-202026101658-U1 - workpiece carrier changing system

DE202026101658U1DE 202026101658 U1DE202026101658 U1DE 202026101658U1DE-202026101658-U1

Abstract

Workpiece carrier changing system (1) for a material removal machining system (2), in particular for the production of dental parts, comprising - at least one workpiece carrier (3, 3') on which a workpiece (4) can be received at least temporarily, - a storage unit (5) which is configured to receive at least two workpiece carriers (3, 3'), wherein the storage unit (5) comprises a vertical conveying device (6) by means of which at least one workpiece carrier (3, 3') received in the storage unit (5) can be moved vertically between at least one storage position (7) and a transfer position (8), - a transfer unit (10) comprising a support device (12) having a receiving area (11) for temporarily receiving a workpiece carrier (3), wherein the support device (12) is linearly transferable between the transfer position (8) and a processing position (9) by means of a linear conveyor device (13) of the transfer unit (10), wherein - at the transfer position (8) a workpiece carrier (3, 3') can be transferred between the storage unit (5) and the transfer unit (10).

Assignees

  • DENTAL CONCEPT SYSTEMS GMBH

Dates

Publication Date
20260513
Application Date
20260324
Priority Date
20250324

Claims (14)

  1. Workpiece carrier changing system (1) for a material removal processing system (2), in particular for the production of dental parts, comprising: - at least one workpiece carrier (3, 3') on which a workpiece (4) can be received at least temporarily, - a storage unit (5) configured to receive at least two workpiece carriers (3, 3'), wherein the storage unit (5) comprises a vertical conveying device (6) by means of which at least one workpiece carrier (3, 3') received in the storage unit (5) can be moved vertically between at least one storage position (7) and a transfer position (8), - a transfer unit (10) comprising a support device (12) having a receiving area (11) for temporarily receiving a workpiece carrier (3), wherein the support device (12) can be moved linearly between the transfer position (8) and a processing position (9) by means of a linear conveying device (13) of the transfer unit (10), wherein - at the Transfer position (8) a workpiece carrier (3, 3') can be transferred between the storage unit (5) and the transfer unit (10).
  2. workpiece carrier exchange system (1) according Claim 1 , characterized in that the vertical conveying device (6) on the storage unit side is configured to move at least two workpiece carriers (3, 3') exclusively along a vertically extending axis of movement (14).
  3. workpiece carrier exchange system (1) according Claim 1 or 2 , characterized in that the displacement unit (10) comprises a rotary device (15) having an actuator, by means of which the support device (12) is rotatable about a rotary axis (16) running parallel and/or coaxial to an axis of movement (14) of the linear conveying device (13), preferably the rotary device (15) can be configured such that a first surface of the support device (12) points in a first direction before the execution of a rotation on the rotary device side and after the execution of the rotation on the rotary device side, a second surface of the support device (12), opposite the first surface, points in the first direction.
  4. Workpiece carrier exchange system (1) according to one of the preceding claims, characterized in that the transfer unit-side support device (12) comprises a rotation device (17) having at least one rotation actuator, by means of which a workpiece carrier (3, 3') carried by the support device (12) is selectively is rotatable about a rotation axis (18) which is preferably perpendicular to the axis of rotation (16) and/or perpendicular to an axis of movement (14) of the vertical conveying device (6).
  5. workpiece carrier exchange system (1) according Claim 3 and 4 , characterized in that the support device (12) is designed in the manner of a gimbal bearing equipped with actuators for rotation, wherein the support device (12) is configured to rotate and/or tilt a workpiece carrier (3, 3') received by the support device (12) about the axis of rotation and rotation (16) by means of the rotary and rotation device (18).
  6. Workpiece carrier exchange system (1) according to one of the preceding claims, characterized in that the storage unit (5) has at least two receiving devices (19, 19') each having a placement section (20) for placing a workpiece carrier (3, 3'), wherein during a placement state (21) of the workpiece carrier (3) arranged on the receiving device (19, 19'), a movement of the workpiece carrier (3, 3'), in particular a horizontal movement, in the direction of the machining position (9) is blocked or prevented by means of an interlocking engagement structure (22) and a counter-engagement structure, preferably the at least one receiving device (19, 19') has an engagement structure (22) and the workpiece carrier (3, 3') has a counter-engagement structure.
  7. workpiece carrier exchange system (1) according Claim 6 , characterized in that the workpiece carrier (3, 3') can be brought into a lifting state (24) in which the workpiece carrier (3, 3') is raised from the support section (20) of the receiving device (19, 19') and the engagement structure (22) and the counter-engagement structure (23) are disengaged, such that the workpiece carrier (3, 3'), preferably supported by a transport device, can perform a relative movement to the receiving device (19, 19') in the direction along or parallel to the axis of movement (11) of the linear conveying device (13).
  8. workpiece carrier exchange system (1) according Claim 7 , characterized in that the at least one workpiece carrier (3, 3') can be transferred by the vertical conveying device (6) between the lifting state (24) and the placing state (21), in particular the workpiece carrier (3, 3') is transferred by means of the vertical conveying device (6) from the placing state to the lifting state (24).
  9. Workpiece carrier exchange system (1) according to one of the preceding claims, characterized in that the transfer unit (10) has a locking device (25) with a movably mounted or movably designed locking means (26), wherein the locking means (26) in a release state (27) releases or enables a relative movement of the support device (12) and a workpiece carrier (3, 3') received in the receiving area (11) of the support device (12), in particular a horizontal movement, and in a locking state (28) locks a relative movement of the support device (12) and the workpiece carrier (3, 3') received in the receiving area (11).
  10. workpiece carrier exchange system (1) according Claim 9 , characterized in that the locking device (25) comprises a control means (29) which directly or indirectly sets the locking means (26) into the locked state (28) and/or the unlocked state (27), wherein the locking device (25) is configured such that the locked state (28) and/or the unlocked state (27) is present depending on whether a contact section (30) of the control means is in contact with a counter-contact section (31) of the storage unit (5), in particular the counter-contact section (31) is located on at least one receiving device (19, 19') of the storage unit (5), preferably the unlocked state (27) exists when the control means-side contact section (30) is in contact with a storage unit-side counter-contact section (31) and/or the locked state (28) exists at least when there is no contact or when the contact section (30) and the Counter-contact section (31).
  11. workpiece carrier exchange system (1) according Claim 9 or 10 , characterized in that the locking device (25) comprises a pre-tensioning means which pre-tensions the locking means (26) with a pre-tensioning force (32) into the locking state (28) and/or into the release state (27), preferably the locking device (25) is configured such that when there is contact between the control means-side contact section (30) and the supply unit-side counter-contact section (31), a release force, in particular a pressure force, is present which, in particular acting against the pre-tensioning force (32), moves the locking means (26) into the release state (27).
  12. Workpiece carrier exchange system (1) according to one of the Claims 9 until 11 , characterized in that the control means (29) is in an elastically deflected state in the release state (27) of the locking means (26) and/or that it is in an elastically deflected state in the locking state (28) of the locking means (26), Preferably, in the release state (27) of the locking means (26) there is a higher restoring force due to the deflected state of the control means (29) than in the locking state (28).
  13. Workpiece carrier (3, 3') for a workpiece carrier exchange system (1) according to one of the preceding claims, characterized in that the workpiece carrier (3, 3') comprises a locking means counter-structure (33) which is configured to block a relative movement of the workpiece carrier (3, 3') and the support device (12) during a locking position of the support device-side locking means (26),
  14. Machining system (2) for material removal from a workpiece (4), in particular for the production of dental parts, with a machining unit (34) comprising at least one tool (35) for material removal from a workpiece (4) located in a working area, characterized in that the machining system (2) includes a workpiece carrier changing system (1) according to one of the Claims 1 until 12 exhibits.

Description

The innovation concerns a workpiece carrier changing system for a material-removing machining system, especially for the production of dental parts. Corresponding workpiece carrier changing systems are known in principle from the prior art. For example, it is known to fix a component to be machined onto a component carrier and to move it in this fixed position from a storage location to a machining location. For this purpose, a robot arm can, for example, grasp the component carrier located at the storage location and move it to the machining location. A disadvantage of this approach is that precise control of the robot arm entails a high programming effort and high costs. Furthermore, the positioning accuracy and/or the process speed are limited. The innovation is based on the task of specifying a workpiece carrier exchange system that enables the transfer of a workpiece carrier between a storage unit and a machining position in a technically simple and reliable manner. The problem is solved by a workpiece carrier changing system according to claim 1. The dependent claims relate to possible embodiments of the workpiece carrier changing system. Furthermore, the problem is solved by a workpiece carrier according to claim 13 and by a machining system according to claim 14. The innovation relates to a workpiece carrier changing system for a material removal machining system, particularly for the production of dental components. The workpiece carrier changing system has at least one workpiece carrier on which a workpiece, in particular a blank disc, can be held, at least temporarily. The blank disc is, for example, a solid material from which a target component, in particular a dental component, is manufactured by targeted material removal, in particular by means of a machining process. For example, a milling tool is used to produce a component, in particular a dental component, from the blank disc. The blank disc can also be used as The workpiece carrier exchange system comprises a storage unit configured to hold at least two workpiece carriers. The storage unit includes a vertical conveying device by means of which at least one workpiece carrier held in the storage unit can be moved vertically between at least one storage position and a transfer position. The vertical conveying device can, for example, be configured to perform only a movement, particularly a linear movement, in the vertical direction. For example, the vertical conveying device is designed like an elevator, having at least two, preferably at least three, receiving devices, each comprising a support section for placing a workpiece carrier. The vertical conveying device thus makes it possible to move a workpiece carrier held in the at least one receiving device in the vertical direction, i.e., to move the workpiece carrier alternately or as required, up and down. The mobility of the workpiece carrier via the vertical conveying device enables only a vertically oriented displacement movement of at least one, and in particular a plurality, of workpiece carriers held within the storage unit. During the movement of at least one workpiece carrier, it can be moved from a first storage position to the transfer position and/or from a first storage position to another storage position. For example, the vertical conveying device has stacked and/or vertically arranged receiving units that are, in particular, exclusively, vertically movable within the storage unit. Preferably, at least two receiving units of the storage unit, each configured to hold at least one workpiece carrier, are vertically movable via an actuator, in particular a common actuator. For example, the workpiece carriers held in a first and at least a second receiving unit are moved vertically via the same actuator and/or without any change in the distance between the receiving units, in particular exclusively. For example, at least two receiving units can be coupled to each other via a rigid connection or connected to each other in such a way that their distance from each other always remains constant. Furthermore, the workpiece carrier exchange system comprises a transfer unit, which includes a support device with a receiving area for temporarily holding a workpiece carrier. The transfer unit comprises a linear conveyor, in particular a horizontal conveyor, wherein the support device can be linearly transferred between the transfer position and a processing position by means of the linear conveyor. At the transfer position, a workpiece carrier can be transferred between the storage unit and the transfer unit; that is, the workpiece carrier can be transferred from a storage unit to a transfer unit at the transfer position. or be moved from an area of the storage unit to a processing area located outside the storage unit. For example, a material-removing machining system, also called a machining center, is a CNC machine. Control information for the machining system can be generated based on