A honing machine (100) for honing bores in workpieces has honing spindle (170) which is mounted movably in a spindle housing (130), is rotatable about a spindle axis (172) by means of a rotary drive (150), is drivable in an oscillating manner parallel to the spindle axis by means of a lifting drive and, at a tool-side end, has a device for fastening a honing tool arrangement with an expandable honing tool. Furthermore, an expanding drive for expanding the honing tool is provided, wherein the expanding drive is connected to the spindle housing and is coupled to a feed rod (180) running in the interior of the honing spindle. The honing machine is characterized by a monocoque housing (150), which has a spindle housing portion (150-1), which serves as the spindle housing, for receiving the rotary drive (135), and an expanding system portion (150-2), which is formed integrally with the spindle housing portion, for receiving the expanding drive (155).

The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.

A method for producing a groove pattern on a cylinder surface includes providing an abrasive module, including an abrasive mesh article and collector block, providing a patterning head, which including the abrasive module and pressing actuator, pressing the abrasive module against the cylinder surface by using the actuator, forming a plurality of grooves on the cylinder surface by causing relative motion between the abrasive module and cylinder surface, and drawing gas through the abrasive mesh article to collect particles released from the cylinder surface. The abrasive mesh article includes a plurality of abrasive grains bonded to a flexible mesh backing, defining openings. The collector block has a curved supporting surface defining openings. The abrasive mesh article is attached to the curved supporting surface by a releasable fastening system. The openings of the flexible mesh backing are in communication with the openings of the collector block via the releasable fastening system.

A surface treating apparatus for treating an inner surface of a bore containing a shaft may include a body connectable to a drive apparatus and configured to movably receive a shaft extending through a bore, and at least one surface treating member connected to and movable with the body relative to the shaft, the at least one surface treating member sized to be inserted within an annular gap formed between the shaft and an inner surface of the bore and to bear against the inner surface of the bore when the shaft is received by the body.

A surface treating apparatus for treating an inner surface of a bore containing a shaft may include a body connectable to a drive apparatus and configured to movably receive a shaft extending through a bore, and at least one surface treating member connected to and movable with the body relative to the shaft, the at least one surface treating member sized to be inserted within an annular gap formed between the shaft and an inner surface of the bore and to bear against the inner surface of the bore when the shaft is received by the body.

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).

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).

A honing sheath device for honing a blade using a rigidly supported soft and smooth surface includes a tool with a handle and a rigid member extending from the handle. A sheath constructed of a flexible material is deployable around the rigid member of the tool to produce a rigidly supported soft and smooth surface for honing blades.

A grinding tool for machining an inside surface of a cylinder bore in a workpiece, the grinding tool having an axis of rotation, a grinding region which is cylindrical with respect to the axis of rotation and a conical grinding region axially adjoining the cylindrical grinding region. A diameter of the conical grinding region increases starting from the cylindrical grinding region in an axial direction with respect to a diameter of the cylindrical grinding region.

The invention relates to a method for fine machining a cylindrical workpiece surface of a workpiece blank by means of a fine machining tool. Said method comprising the following steps: generating a relative rotational movement between a tool and a workpiece blank about a machining axis which is concentric to a cylindrical workpiece surface of the workpiece blank; generating a relative feed rate between the tool and the workpiece blank along the machining axis; detecting an actual value of a process variable which is a function of a relative force between the tool and the workpiece blank and which can assume a plurality of process variable values; and continuously controlling the process variable by changing the relative feed rate in such a way that the more the relative feed rate changes, the more the actual value of the process variable deviates from a desired value of the process variable.