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Tool holder for a rotating tool

A technology of rotating tools and tool holders, which is applied in the direction of manufacturing tools, metal processing, tool holder accessories, etc., and can solve problems such as limiting the feed speed of machine tools

Inactive Publication Date: 2007-06-27
FRANZ HAIMER MASCHINENBAU KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This limits the achievable feed rate of the machine tool

Method used

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  • Tool holder for a rotating tool
  • Tool holder for a rotating tool
  • Tool holder for a rotating tool

Examples

Experimental program
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Effect test

Embodiment Construction

[0041] Figure 1 shows a tool holder 1 of the shrink chuck type, which comprises an engagement part 3, here in the form of a hollow shank taper (HSK), for rotational fixation with a working spindle of a machine tool at one of its axial ends ground engagement; and a clamping portion 5 at the other axial end thereof. The axis of rotation of the tool holder 1 is indicated with 7 . The engagement portion 3 can have any shape, ie also in the form of a steep taper or the like. The clamping part 5 has the basic shape of a housing 9 , which terminates in an end face 11 extending perpendicular to the axis of rotation 7 and comprises a cylindrical receiving opening 13 concentric to the axis of rotation 7 , a rotary tool not shown in detail, A cylindrical tool shank 15 , for example a milling cutter or a drilling tool, is inserted exchangeably into the receiving bore as will be described in more detail later. For the sake of clarity, FIG. 1 shows the tool shank 15 prior to insertion int...

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PUM

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Abstract

A tool holder (1), in particular, of the clamping chuck type, is disclosed, the housing portion (5) of which comprises clamping means (9), provided for fixing a shaft (15) of a rotating tool central to a rotational axis (7) of the tool holder (1) and defining a housing opening (13) for said shaft (15). The clamping means (9) can be radially adjusted between a radially-extended release position for the insertion or removal of the shaft (15) and a clamping position, in which the clamping means (9) exert a radial compression seating force on the shaft (15), holding the shaft (15). The clamping means (9) are provided with a clamping surface (17) with a cylindrical contour, which makes a surface contact with the outer circumferential surface (19) of the shaft (15) in the clamping position. The region of the tool holder (1) forming the clamping surface (17) comprises a spiral groove around the rotational axis (7), or a number of annular grooves (21) around the rotational axis (7) at an axial separation from each other, which, viewed in the direction of the rotational axis (7), are connected in one piece between the adjacent turns of the spiral groove or between adjacent annular grooves (21), forming support regions at an axial separation from each other, projecting towards the rotational axis (7), the peak surfaces (27) of which, facing the rotational axis (7), form the cylindrical clamping surface (17).

Description

technical field [0001] The invention relates to a tool holder for a rotary tool. Background technique [0002] In practice, various tool holders are used for clamping rotating tools, such as drills or milling cutters, whose clamping device fixes the tool holder of the rotating tool with a radial force fit with a slight maximum displacement. Relates to the rule that the smaller the clamping displacement, the higher the precision and concentricity of the tool holder. In this way, precision spring collets have a clamping displacement of only a few millimeters, while other precision collets, such as hydraulic expansion collets or mechanism collets with an annular closed clamping device, especially shrink collet types The tool holder is designed so that rotating tools with a single nominal shank diameter can be clamped directly in the tool holder. [0003] Sufficiently high press-fit forces can be achieved with the tool holder described above. However, it has been found that v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/00B23P11/02B23B31/02
Inventor 弗朗茨·海默
Owner FRANZ HAIMER MASCHINENBAU KG
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