Abstract: 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.

Abstract: Methods of shaping a glass sheet each include a step of removing a first portion of the glass sheet to form a first beveled surface. The methods further include the step of removing a second portion of the glass sheet to form a second beveled surface. The methods still further include the step of removing a third portion of the glass sheet comprising a remainder of an end surface of an edge portion of the glass sheet. In further examples, glass sheets are also provided with a first bevel surface intersecting a first glass-sheet surface and an apex surface, and a second bevel surface intersecting a second glass-sheet surface and the apex surface. The glass sheet exhibits a probability of failure of less than 5% at an edge stress of 135 MPa.

Abstract: A reciprocating servo control device for a mainshaft of a honing machine includes a bed body, a mainshaft mechanism, a driving system for hydraulic reversing and a control system, the driving system includes a mainshaft hydraulic cylinder and a mechanical-hydraulic servo valve, a valve body of the mechanical-hydraulic servo valve is connected to a piston rod of the mainshaft hydraulic cylinder via a connecting mechanism, a spool of the mechanical-hydraulic servo valve is connected to one end of a first connecting member, and the other end of the first connecting member is connected to a pilot displacement mechanism controlled by a servo driving and control system. The reciprocating servo control device adopts a mechanical position closed-loop and a hydraulic position closed-loop, to achieve numerical control of speed, position and reversing of the mainshaft hydraulic cylinder, thus a simple structure, reliable control, low price and easy adjustment can be realized.

Abstract: A multi-purpose machine for wall processing includes a base, a working member and a sliding device that drives the working member slide up and down relative to the base. The base includes a bottom board with moving wheels therebelow, a top board, and several parallel upright posts therebetween. The working member includes a cover and a roller set inside the cover. A built-in motor is set inside the roller. Wall processing tools are releasably fixed on the outside of the roller. A feeding hole is provided on the upper part of the cover and connected with a supply system or an absorbing system. The multi-purpose machine may perform operations including putty scraping, grinding and polishing, painting, cleaning and wall paper removing on the wall to replace human labor, thus realizing multiple purposes, reducing the labor strength, and improving the working efficiency.

Abstract: A grinding/polishing machine includes first and second grinding units. The first grinding unit is mounted slidably on a column on a base support to move along a Z-axis direction, and has a first grinding wheel. The second grinding unit is mounted slidably on the first grinding unit to move along a Y-axis direction and has a second grinding wheel aligned with the first grinding wheel. When the second grinding wheel is in a grinding position, the second grinding wheel is situated between the first grinding wheel and a platform mounted on the base support to hold a workpiece. When the second grinding wheel moves away from the first grinding wheel, the first grinding wheel is movable to the platform for a grinding operation. The first and second grinding wheels have different levels of coarseness/fineness.

Abstract: A grinding machine for grinding bulky workpieces of considerable length, such as frames, columns and tables of machine tools. Said grinding machine comprises at least one machining table on which a workpiece to be ground is placed, at least two columns linked to a single carriage, said carriage moving longitudinally over a base parallel to said machining table, and at least one wheelhead affixed to each of said columns, each one of said wheelheads comprising its own independently operated vertical and transverse drive means and at least one of said wheelheads being capable of angle movement. So, said wheelheads have a common longitudinal movement and independent vertical and transverse movements, so that said wheelheads can work simultaneously.

Abstract: The combined grinding machine for internal spline includes three grinding heads for processing a bore of internal spline parts. The machine clamps a workpiece and at the same time can finish grind during the bore and spline operation and boring one of its end faces. The machine has a grinding head for boring and grinding head for a side boring a spline installed in a main sliding plate which moves on a vertical shaft of the machine body. The machine has a rotary table installed in a removable working table driven by a motor unit. Both the working table and the grinding head for the spline end face are located in the machine body. The machine demonstrates high efficiency, high precision, and low equipment investment. The machine saves time for aligning and clamping procedures.

Abstract: A cutter robot used to operate in a horizontal pipe having a horizontally extending main body, a stand gear to support the main body aloft, and a head bearing a rotary grinder assembly, and this head consists of: (i) a motor having an upward output shaft to bear the grinder assembly locked about its end, (ii) two holders, and (iii) two vertically held piston cylinders, which are arranged such that the first piston cylinder connected to the main body has an upward piston rod, and the first holder means supported at the end of the upward piston rod of the first piston cylinder holds the second piston cylinder, and the second holder means supported at the end of the downward piston rod of the second piston cylinder holds the motor.