A polishing apparatus which can efficiently polish an entirety of a back surface of a substrate, with the back surface facing downward, is disclosed. The polishing apparatus includes: a substrate holder configured to rotate the substrate; a polishing head configured to polish the back surface of the substrate; a tape advancing device; and a translational rotating mechanism configured to cause the polishing head to make a translational rotating motion. The substrate holder includes a plurality of rollers which are rotatable about their own axes. The plurality of rollers have substrate-holding surfaces capable of contacting a periphery of the substrate. The polishing head is disposed below the substrate-holding surfaces. The polishing head includes a polishing blade configured to press the polishing tape against the back surface of the substrate, and a pressing mechanism configured to push the polishing blade upward.

Disclosed is a wheel flange burr brushing device, comprising clamping roller motors, a second clamping cylinder, second travel switches, a second feeding sliding plate, an upper rack, a gear, a lower rack, a feeding guide rail, belt pulleys, driving belts, rotating shaft supports, servo motors and the like. After feeding, a first clamping cylinder and a second clamping cylinder move synchronously first to clamp a wheel; next, the clamping roller motors are started to drive the wheel to rotate; then a lifting cylinder is started to drive a lifting platform to ascend, meanwhile, a feeding cylinder is started to drive a first feeding sliding plate and the second feeding sliding plate to reciprocate, and the servo motors are started to drive burr brushes to reverse cyclically; and the lifting cylinder stops moving when the burr brushes contact the flange face, the burr brushes begin brushing burrs.

Wheel blank positioning lip correction device comprises an end mill and a grinding wheel, etc. The first linear motor is mounted at the upper part of the frame, which controls lifting of the feeding slide plate. Output end of the second linear motor is connected with the inner slide block. The second servo motor is mounted on the inner slide block, the end mill is mounted at output end of the second servo motor. The lifting linear motor is fixed on the motor support plate, which controls lifting of the lifting table. Output end of the third linear motor is connected with the outer slide block. The third servo motor is mounted on the outer slide block, which controls rotation of the grinding wheel. The end mill and the grinding wheel are used for correcting the axial positioning surface and the radial positioning surface of the positioning lip respectively.

A machine tool comprises first and second support arms, and a rigid structure which couples the first support arm to the second support arm. A first rotary drive is operable to rotate the first support arm and the rigid structure relative to each other about a first rotational reference axis, and a second rotary drive is operable to rotate the second support arm and the rigid structure relative to each other about a second rotational reference axis, wherein the first and second rotational reference axes are parallel and spaced apart by a fixed distance. A control arrangement is configured to control the first and second rotary drives such that a workpiece mount carried by the second support arm follows a predetermined path relative to a tool mount carried by the first support arm in a plane perpendicular to the rotational reference axes.

A tool includes a coupling, an inner adjustment sleeve, and an outer adjustment sleeve. The coupling connects a rotary tool to the inner adjustment sleeve. An adjustable portion of the inner adjustment sleeve is threadedly received in the outer adjustment sleeve. An offset aperture in the free end of the outer adjustment sleeve receives a tip of a valve stem for grinding. An optional cup at the end of the outer adjustment sleeve stabilizes the tool. A grinding bit with a shaft retained in a collet of the rotary tool is contained internally, in a channel, extending through the tool.

A wheel fixture is disclosed. A main shaft drives a first positioning pull rod on a chuck body to extend and contract in the radial direction via a tightening screw, a clamping jaw is at a position within the travel range of extension and contraction, a wheel is positioned and clamped by the fixture, airtight support blocks are pressed down by the wheel and flush with the support plane of the clamping jaw, at this time, airtight ejector rods press second O rings to prevent air from flowing out of the airtight detection position, a detection system of a machine tool detects a preset air pressure value which indicate that the wheel has been placed correctly, and if the wheel is not placed correctly on the fixture, the machine tool will alarm through the detected pressure feedback.

A multi-station wheel deburring device is disclosed, which consists of a lower lifting translation system, a first brush system, a second brush system, a synchronous clamping drive system and a third brush system, etc. The multi-station wheel deburring device can be used for removing burrs from the root of a wheel flange, a center hole, bolt holes and a back cavity, can automatically adjust the position of each brush according to the dimension and shape of a wheel, and at the same time, has the characteristics of high automation, high removal efficiency, advanced technology, strong universality and high safety and stability.

A substrate processing apparatus which can remove foreign matters attached to the entire upper surface of a substrate such as a wafer is disclosed. The substrate processing apparatus includes: a substrate holding apparatus; and a processing head configured to scrub an upper surface of a substrate. The substrate holding apparatus includes: a substrate holder configured to hold the substrate; and a substrate rotating mechanism configured to rotate the substrate held by the substrate holder. The substrate holder is disposed below the upper surface of the substrate so as not to project above the upper surface of the substrate in a state where the substrate is held by the substrate holder.

The present disclosure discloses a wheel burr removing device, consisting of a left brush system, a synchronous clamping drive system, a right brush system and the like. The wheel burr removing device can be used for removing burrs from a wheel center hole, the circumferential edge below the center hole, a bolt hole and a back cavity weight reduction pit, and at the same time, has the characteristics of high automation, high removal efficiency, advanced technology, strong universality and high safety and stability.

A wheel grinding device consists of a lower lifting rotary system, spoke grinding units, a center hole grinding system and an upper lifting and clamping rotary system. The wheel grinding device not only can be used for grinding the center hole of a wheel of any size, but also can be used for grinding the back of wheel spokes of different sizes and shapes via the actions of brush belts.