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Hydromechanical clamping device with hydraulically operated expanding means

A technology of clamping device and expansion device, applied in the direction of expansion mandrel, metal processing equipment, etc., can solve problems such as surface roughness, and achieve a high degree of bending rigidity

Inactive Publication Date: 2006-10-18
ETP TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this vibration will cause the surface being machined to be rough

Method used

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  • Hydromechanical clamping device with hydraulically operated expanding means
  • Hydromechanical clamping device with hydraulically operated expanding means
  • Hydromechanical clamping device with hydraulically operated expanding means

Examples

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Embodiment Construction

[0026] Figure 1 shows a hydromechanical mandrel 1 according to the invention in a partially cut-away condition.

[0027] The mandrel 1 shown in the figures comprises a transition part 3, for example in the form of a V-shaped flange, for connecting a cone 4 in a corresponding conical cavity of a rotating or non-rotating machining device and for detachably connecting a or A plurality of tools 2 are fixed on the bolster suspension shaft or the clamping body 5 on the clamping body 5 . The transition part 3, the cone 4 and the clamping body 5 form an integral unit.

[0028] The transition portion 3 and the cone 4 are of a type known in the art and therefore need not be described in detail. The cone 4 is adapted to be introduced into a corresponding conical cavity of a rotary machining device, such as a drilling machine, lathe, milling machine or similar. It is of course also possible to form the cone as an integral part of the machining device, so that only the clamping body form...

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PUM

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Abstract

A hydromechanical clamping device in which one end is designed as a bolster suspension shaft with an outer envelope surface, on which one or more tools can be mounted. The bolster suspension shaft includes an external expansion device (6), the outer surface of which is composed of the envelope surface, has a thinner radial expansion wall and an axial conical inner surface, and the bolster suspension shaft also includes a central pin (8 ), the outer diameter of which is smaller than the diameter of the inner surface of the device, wherein an intermediate device (7) connected to the piston (9) is provided in the space between the central pin (8) and the expansion device. The intermediate device (7) is axially displaceable by hydraulically operated means, wherein the intermediate device (7) and the outer expansion device (6) have conical surfaces interacting to cause the outer expansion when the intermediate device is moved axially in one direction The means (6) expand radially, while the axial movement of the intermediate means in the other direction causes loosening due to the radial contraction of the outer expansion means (6).

Description

technical field [0001] The invention relates to a hydromechanical clamping device according to the preamble of claim 1 . Background of the invention [0002] Clamping devices of various embodiments are known, one end of which is intended to be attached to rotating or also non-rotating machining equipment, such as drilling machines, milling machines, lathes, etc., and the other end is used to detachably fix the boring Turning tools, workpieces, conversion elements, hubs or similar objects, such as drills, milling cutters, circular saws, grinding wheels, etc. [0003] Such a clamping device may consist of a mandrel. Such known arbors are usually constructed by securing the interchangeable tool in the direction of rotation of the arbor by means of mechanical means, such as keys, splines or the like, or by thermocompression connections, and by means of nuts or screws to prevent the axial move. Such mechanical locking devices do not provide the desired accuracy and circumferen...

Claims

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Application Information

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IPC IPC(8): B23B31/40B23B
CPCB23B31/4026
Inventor N·勒斯贝格
Owner ETP TRANSMISSION