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Measuring unit for measuring drilled holes

A technology of measuring unit and measuring hole, which is applied in the direction of measuring device, using fluid device, instrument, etc., to achieve the effect of reliable operation and simple rough structure

Inactive Publication Date: 2015-05-27
NAGEL MASCHEN UND WERKZEUGFAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] DE4024778A1 describes a honing measuring tool which has a machining element in the form of a honing stone, but which may also be able to operate without a machining element

Method used

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  • Measuring unit for measuring drilled holes
  • Measuring unit for measuring drilled holes
  • Measuring unit for measuring drilled holes

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Embodiment Construction

[0050] figure 1 The general illustration of the figure shows a pneumatic measuring unit 100 according to a first embodiment of the invention. The measuring unit can be used to measure the inner diameter in through holes or blind holes. In this example, the measuring unit is designed in conjunction with the honing machining of the hole in the workpiece 190 to perform an accurate inner diameter determination of the honed hole in a re-measurement operation after completion of the honing machining. For this purpose, the measuring unit is a constituent part of a measuring station integrated into the honing machine. Integration into a measuring station independent of the processing machine is also possible.

[0051] The measuring unit is equipped with a pneumatic plug gauge 160 with an adjustable diameter and allows testing the inner diameter of holes of different sizes with very low systematic measurement deviation and high repeatability. By using the same plug gauge, holes in a...

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Abstract

A measuring unit for measuring the geometry of a bore, in particular for measuring the internal diameter of a bore after a honing treatment, has a pneumatic measuring mandrel (160) being insertable in the bore and having a pair of measuring nozzles (172-1, 172-3), which are arranged at diagonal distance (175) to each other relative to the longitudinal central axis (164) of the measuring mandrel, and an adjusting drive adjusting diagonal distance between the measurement nozzles when actuated by the adjusting drive. Each of the measuring nozzle is on a separate measuring nozzle carrier (170-1, 170-3) which is arranged in a base body (162) of the measuring mandrel to allow radial movement relative to the longitudinal central axis (164). The adjusting drive moves radially through the adjusting means. The adjusting device has an axially adjustable adjusting cone (180) with at least one conical portion, and an inclined surface cooperating with the conical portion in the manner of a wedge drive is arranged on a measuring nozzle support facing the inner side of adjusting cone. The adjusting device has a screw drive with threaded mandrel (184) drivable by the adjusting drive and mandrel nut (186) running on the threaded mandrel.

Description

technical field [0001] The invention relates to a measuring unit for measuring geometric properties of holes according to the preamble of claim 1 . Background technique [0002] A preferred field of application is the measurement-assisted finishing of holes by means of internal honing and / or fine boring, wherein after finishing, measurements to determine the macroscopic form of the hole, in particular inner diameter measurements, are performed. [0003] Honing is a material removal process using a geometrically indeterminate tool, where the face milling honing tool performs a cutting motion comprising two components, which results in a characteristic surface structure of the machined inner surface, usually with intersecting machining trajectories. With honing, final machined surfaces can be produced that meet extremely high requirements in terms of dimensional and shape tolerances as well as in terms of surface structure. Thus, for example, during engine construction, the c...

Claims

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Application Information

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IPC IPC(8): G01B13/10B24B33/10
CPCG01B13/10B24B33/087B24B33/10
Inventor B. 纳格尔H. 劳舍尔
Owner NAGEL MASCHEN UND WERKZEUGFAB
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