A shaft precision automatic measurement device for motors is provided that is able to automatically measure shaft precision of a motor. A shaft precision automatic measurement device (1) for a motor (9) includes: a gripping mechanism (3) that grips the shaft (7); a first contact-type displacement sensor (41) that is able to measure a position of the flange face (82) by contacting to follow the flange face (82); a second contact-type displacement sensor (42) that is able to measure a position of the fitting face (81) by contacting to follow the fitting face (81); a rotary mechanism (5) that causes the device main body (2) to rotate in a state gripping the shaft (7) by the gripping mechanism (3) and executing measurement by way of the respective displacement sensors; a displacement data acquisition part (63) that acquires displacement data of the flange face (82) and displacement data of the fitting face (81); and a measurement part (64) that measures center runout and face deflection of the shaft (7) based on the respective displacement data acquired by the displacement data acquisition part (63).

The invention relates to a method for coating cavity walls, in particular cylinder bores of engine blocks. In the method, a coating is applied to a cavity wall using a coating lance. In addition, a cavity diameter is measured using a measuring apparatus. According to the invention, the method is characterized in that at least a plurality of diameter values of a first cavity are measured at different heights of the first cavity using the measuring apparatus, and in that a coating of variable thickness is applied to a wall of the first or a second cavity using the coaling lance, the thickness of said coating of variable thickness being dependent on the determined diameter values. The invention additionally describes a corresponding coating system.

An assembly-free tool for maintenance of an engine in a vehicle is described. The tool comprises a bar extending in an axial direction and having a first portion with a first end and a second portion with a second end and a housing surrounding the first portion of the bar. The bar is axially translatable in relation to the housing. The housing comprises an embedded locking structure for holding the bar in a locking position to stop the movement of the bar in the axial direction. The bar, the housing and the locking structure are retained as one unit such that they are non-detachable from each other.

A self-adjusting pushrod length checking tool for use in an internal combustion engine between the camshaft lifter and valve rocker arm, that determines the optimum pushrod length using a telescoping spring-loaded body upper rod and a lower rod assembly. The spring-loaded telescoping assembly self-adjusts and determines the optimum pushrod length when compressed and inserted between the camshaft and valve rocker arm, when the rocker arm pivot bolt is fully tightened down to the cylinder head. The telescoping assembly sections are then locked by a captive set screw, the assembly is removed from the engine, and accurate measurements of the assembly length are taken.

A self-adjusting pushrod length checking tool for use in an internal combustion engine between the camshaft lifter and valve rocker arm, that determines the optimum pushrod length using a telescoping spring-loaded body upper rod and a lower rod assembly. The spring-loaded telescoping assembly self-adjusts and determines the optimum pushrod length when compressed and inserted between the camshaft and valve rocker arm, when the rocker arm pivot bolt is fully tightened down to the cylinder head. The telescoping assembly sections are then locked by a captive set screw, the assembly is removed from the engine, and accurate measurements of the assembly length are taken.

The present application relates to a runout detection device, which includes a base plate, lateral plates, guide sleeves, springs and dial gauges, etc. During the operation, the sliding sleeve and the lateral dial gauge are moved along the sliding groove in the lateral formwork, so that the runout of right end of the work piece may be measured. The bottom plate of the lower end measuring device is placed above the base plate, the ball at the top end of the probe is always in contact with the lower end of the work piece under the action of the upper spring, the probe is pressed down when contacting a projection, and the L-shaped plate is rotated clockwise through the head nail, at this time, the runout of the lower end of the work piece may be known by the reading of the lower dial gauge.

A method for determining shape deviations of a real actual surface on the basis of measured vertical information of measurement points of the actual surface section is provided. Measurement points are located in a measurement-point extent section, wherein the method uses evaluation sections, which are arranged at offsets to each other and, altogether, extend over the measurement-point extent section. The method includes (a) for each measurement point of a number of measurement points of each evaluation section of the first evaluation sections, determining a maximum vertical distance that results as the greatest distance in a specified vertical direction between two measurement points, and (b) determining an evaluation-section slope, which represents a straight connecting line between an evaluation-section lowest point and an evaluation-section highest point, wherein, in a further step, the value pairs of a maximum vertical distance and of an evaluation-section slope, which value pairs are determined in a plurality of iterations for the respective evaluation sections thereof, are associated with a limit criterion.

A method for estimating at least one ring-related parameter related to at least one piston ring may include estimating a bore distortion of a cylinder bore. The bore distortion may include a plurality of bore distortions corresponding to a plurality of respective piston locations within the cylinder bore. The method may also include receiving the bore distortion in a ring performance model configured to dynamically estimate a plurality of ring-related parameters associated with combustion in the cylinder bore during operation of the internal combustion engine. The ring performance model may be configured to receive a static data signal indicative of static parameters and a dynamic data signal indicative of dynamic parameters related to operation of the internal combustion engine. The ring performance model may be configured to estimate at least one ring-related parameter related to at least one piston ring during operation of the internal combustion engine.

Provided is an information processing apparatus including: an input unit into which shape data of a surface to be measured including a plurality of recesses is input; and a setting unit that detects each of the plurality of recesses on the basis of the input shape data and sets, for the detected recess, a region to be removed including the recess.

A measurement apparatus includes: the first end supporter; the second end supporter; a probe that measures a columnar workpiece supported by the first end supporter and the second end supporter; and a control part that obtains a center and a rotation track of the first end supporter, and a center of the second end supporter when a rotary table rotates and changes the orientation of workpiece coordinate axes based on a rotation position of the rotary table when a measurement of the columnar workpiece by the probe is performed, the workpiece coordinate axes including an axis passing through the center of the first end supporter and the center of the second end supporter.