Honing machine

Abstract

A honing machine (100) for honing a bore in a workpiece comprises a support structure (120) fixed to the machine, and at least one honing unit (130) which is mounted on the support structure. The honing unit has a main support (160) which can be mounted fixedly with respect to the support structure and a spindle unit (150) which is supported by the main support and in which a spindle shaft is rotatably mounted, wherein the spindle shaft is rotatable about a spindle axis by means of a rotary drive and, at a tool-side end (153), has a device for the fastening of a honing tool. Furthermore, a linear guide system which is arranged between the main support (160) and the spindle unit (150) for guiding a linear stroke movement of the spindle unit (150) relative to the main support (160) and a stroke drive for generating the stroke movement of the spindle unit (150) are provided. The main support (160) is attached to the support structure (120) in such a manner that a workpiece-close end (166) of the main support lies at a distance above a spindle-facing limit of a workpiece height range. The spindle unit (150) is attached with respect to the linear guide system in such a manner that, in a workpiece-close end position of a stroke movement, the tool-side end (153) of the spindle shaft lies closer to the workpiece height range than the workpiece-near end (166) of the main support (160).

Description

FIELD OF APPLICATION AND PRIOR ART[0001]This application claims priority to German Patent Application DE 10 2019 214 869.7 filed Sep. 27, 2019, the entirety of which is incorporated herein by reference.[0002]The invention relates to a honing machine for honing a bore in a workpiece.[0003]Honing is a cutting machining method using geometrically undefined cutting edges, in the case of which a honing tool performs a cutting movement composed of two components and there is constant areal contact between one or more cutting material bodies, for example honing strips, of the honing tool and the bore inner surface to be machined. The kinematics of a honing tool are characterized by a superposition of a rotational movement and a stroke movement running in an axial direction of the bore. Normally, an optional expansion movement is also provided, which leads to a variation of the effective diameter of the honing tool.[0004]A one-off stroke movement of the honing tool within the bore, composed...

AI Technical Summary

Benefits of technology

The patent describes a problem where a structural compromise occurs when trying to machine workpieces of different heights without modifying the honing machine. The solution presented is to have a spindle unit with two housing parts that can accommodate different drives, allowing for easy swapping between workpieces without needing to modify the machine or make it larger. The movability of the spindle unit housing makes installation and exchange of cartridges easier.

Problems solved by technology

A centre of gravity located at a relatively high point may also arise for the arrangement, which can lead to instability during operation.

However, in said installation position of the main support close to the workpiece, a large workpiece receiving device may possibly no longer be able to be transported through below the main support.

This workpiece-specific design of the honing machine greatly restricts the possible variety of workpieces which can be machined on the respective honing machine.

However, such a carriage is not compulsory.

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