Classifications

• • 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
  • B23Q1/0063—Connecting non-slidable parts of machine tools to each other
  • B23Q1/0072—Connecting non-slidable parts of machine tools to each other using a clamping opening for receiving an insertion bolt or nipple
• • 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
  • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
  • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part

Definitions

• the invention relates to a clamping device according to the preamble of claim 1.
• Such a clamping device is known from DE 20 2010 010 413 Ul.
• a NuU Vietnamesespannvomchtung is shown, with which a high-precision and fast clamping of a workpiece is made possible.
• the NuU Vietnamesespannvomchtung in this case has an annular base body with a receiving opening for holding a pull-in bolt to be clamped component.
• the component is inserted into the receiving opening of the base body.
• the base body of the zero-point clamping device is mounted on a mounting plate.
• the object of the invention is to provide a high-precision clamping device, which nevertheless offers a high degree of flexibility in the clamping of a component. This object is achieved by clamping device with the features of claim 1. Advantageous embodiments and expedient developments of the invention are specified in the subclaims.
• the at least one zero point tensioning device is integrated in a clamping plate such that an upper end surface of the base body of the zero point tensioning device is flush with or lowered relative to the surface of the clamping plate facing the component.
• the at least one NuUrete Vietnamesespannvomchtung is also used from below, so from the side facing away from the component of the platen, in the platen. This has the advantage that the zero-point clamping device is largely covered by the platen and thus protected from damage. In addition, the clamping surface of the clamping plate is not unnecessarily restricted by recesses for the base body of the zero-point clamping devices.
• the NuUreterete clamping devices are housed in the platen, which are separately or jointly actuated. But it is also possible to control the zero point clamping devices in individual groups. As a result, an efficient and quick operation of the clamping device is made possible.
• the NuU Vietnamesespannvomchtonne be operated on integrated in the platen electrical, pneumatic, hydraulic or mechanical actuators. As mechanical actuation, e.g. Drive rods are used, which are arranged in the clamping plate and emerge laterally from this.
• additional fastening devices for example in the form of mating bushes, fitting holes, threaded bores or the like, are provided in the clamping plate on the component side. These allow the attachment of other component holders such as clamps, clamping lever or the like. Depending on the application, these additional component holders can support the clamping by the zero-point clamping device or even be used alone for clamping a component. In a favorable manner, thus, the advantages of the precision of the zero point clamping devices and the flexibility of the additional fastening devices are combined.
• the fastening devices are arranged in the form of a grid in the clamping plate. Such a designed clamping plate offers a large number of Aufspannux7) and thus a high flexibility with respect to exciting component geometry.
• the main body of the zero-point clamping devices is accommodated in a recess of the clamping plate adapted to the outer contour of the basic body. This has the advantage that the base body can be positioned by positive locking exactly in the platen.
• the zero-point clamping devices can also be easily assembled and disassembled if necessary.
• the recess in the clamping plate is formed as a passage opening. This makes it possible to use the entire thickness of the platen for the design of the zero-point clamping devices and thus also make the platen very thin and lightweight overall.
• the main body of the zero point clamping device consists of an upper part with the upperberichtfikiee and a lower part, wherein the lower part relative to the upper part has larger dimensions.
• FIG. 1 shows an embodiment of the tensioning device according to the invention in the
• Figure 2 is a sectional view of the platen along the line BB of Figure 1;
• Figure 3 is a perspective view of the underside of the clamping device according to the invention.
• Figure 4 is a zero point clamping device.
• FIG. 1 shows a clamping device 1, which consists of a clamping plate 2 and zero-point clamping devices 3 integrated therein.
• the zero-point clamping devices 3 are arranged in grid form in the form of a rectangular pattern and have a base body 4 shown in Figure 4 with an integrated clamping mechanism 17 for positionally accurate clamping of a arranged on a tensioning component clamping pin.
• the basic body 4 of the zero-point clamping device 3 shown in FIG. 4 is integrated into the clamping plate 2 such that the component-side upper end surface 5 of the base body 4 is flush with or lowered relative to the surface 6 of the clamping plate 2.
• actuating elements in the form of mechanical drive rods 7 are provided, which are guided within the clamping plate 2 and emerge according to Figure 1 on one side of the platen 2. At the exiting from the platen 2 end, the drive rods 7 contact surfaces 8, so that they can be easily operated with appropriate tool.
• the platen 2 Furthermore, on the upper side of the platen 2 and fastening devices in the form of mating sleeves 9 and fitting holes 10 are arranged grid-shaped in a rectangular pattern. These fasteners allow the attachment of additional component mounts, such as those shown in Figs. Clamping, clamping lever or the like. In the platen 2 also mounting holes 11 are provided for positionally accurate attachment of the platen 2 on a machine table.
• the platen 2 may be of any size, e.g. be mounted on a machine table with positioning accuracy using sliding blocks or similar positioning elements.
• the platen 2 is shown with the mating bushings 9 and additional threaded holes 12.
• the attachment of the platen 2 on the machine table can be done via mounting screws, which in the formed as a sink hole mounting holes 11 within the platen. 2 to be ordered.
• the screw heads of the fastening screws are arranged below the surface 6 of the clamping plate 2 and thus do not hinder the clamping of components on the platen. 2
• the NuU Vietnamesespannvomchtonne 3 are shown, which are inserted into recesses 13 on the back of the platen 2 and fastened by means of screw connections.
• the back of the zero-point clamping devices 3 is flush with the back of the platen 2 and is lowered relative to this, so that a flat bearing surface is formed for engagement with the machine table.
• the recesses 13 and the fastening and fitting bores 10, 11 and 12 are arranged so that a production of the clamping plate 2 can be made only from the two main sides and thus particularly efficient. Elaborate deep holes or frontal holes can be omitted.
• the mechanical drive rods 7 are arranged in longitudinal grooves within the clamping plate 2. However, it is also possible to actuate the neutral point clamping devices 3 electrically, pneumatically or hydraulically and to actuate the corresponding actuating elements such as cables or lines in the clamping plate 2, e.g. to be arranged in longitudinal grooves.
• FIG. 4 shows a zero-point clamping device 3.
• This has a base body 4 with an annular upper part 14 and a rectangular lower part 15. At the top of the annular upper part 14, the upper end surface 5 of the base body 4 is formed.
• a receiving opening 16 for receiving a arranged on the component to be tensioned clamping pin is arranged.
• the main body 4 of the clamping mechanism is housed with a displaceable by the actuating rod 7 transversely to the receiving opening 16 cocking slide.
• the structure and operation of the clamping mechanism is described in German Utility Model DE 20 2010 010 413 Ul. With regard to the chip mechanism, reference is expressly made to this document. Their disclosure content is also made the subject of the present application.
• the zero-point clamping device 3 has a particularly flat design, so that the clamping plate 2 can be realized with a low height, the weight of the entire clamping device 1 is kept low and the machine charge is not unnecessarily limited.
• Such a weight-optimized clamping plate 2 with flat Zero-point tensioning devices 3 may have a thickness of less than 42 mm.
• the NuU Vietnamesespannvomchtonne 3 can be driven not only mechanically, but also pneumatically, hydraulically or electrically. Depending on the application, it is also possible to switch the NuU Vietnamesespannvomchtonne 3 individually or together in groups and to control.
• the upper end surface 5 may be slightly lowered relative to the component 6 facing surface of the platen 2.
• the clamping surface for the component is formed only by the surface 6 of the clamping plate 2. This has the advantage that the tolerances during assembly of the zero-point clamping systems 3 with the clamping plate 2 can be greater and therefore the production is less expensive.
• one or more zero-point clamping devices 3 alone, in conjunction with additional component mounts, or only the component mounts, may be used to stress the component.
• the components to be clamped in the sense of the invention can be both workpieces per se but also other holding means, such. a vise, a dividing attachment or the like.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Jigs For Machine Tools (AREA)

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Publications (1)

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Citations (7)

Family Cites Families (5)

• 2012
  • 2012-06-15 DE DE202012102208U patent/DE202012102208U1/de not_active Expired - Lifetime
• 2013
  • 2013-06-12 WO PCT/EP2013/062136 patent/WO2013186255A1/fr not_active Ceased

Patent Citations (7)

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