40results about How to "No change in length" patented technology

The hinge device according to the present disclosure may include a hinge unit configured to mutually and rotatably connect a first member and a second member, and a first surface of the hinge unit may be continued to at least one surface of a first particular surface of the first member and a second particular surface of the second member.

A transmitter which alleviates the effect of delayed waves without reducing the transmission efficiency to prevent degradation in overall throughput. In the transmitter for transmitting the SC-FDMA signals, a data realignment section (130) assigns a signal with better error characteristics or a signal requiring no high error characteristics toward the end of a symbol length of the SC-FDMA signal to obtain a time-region signal, and a time / frequency converter section (140) forms the SC-FDMA signal using the time-region signal. This allows the signal to be realigned by selecting the symbol end subject to the effect of delayed waves and the symbol center less subject to the effect of delayed waves out of the SC-FDMA symbol length. As a result, the influence of an error at the symbol end subject to the effect of delayed waves on the overall packet is reduced to prevent degradation in overall throughput.

The invention relates to a method for clamping a tool or a workpiece by means of an electric clamp (1), which comprises a housing (2), which is fastened to the working spindle of a machine tool and in which a threaded rod (3) for adjusting the clamping jaws of a chuck is supported in an axially adjustable manner, and an electric servomotor (4), the rotor of which is in a driving connection with a drive wheel (6) that adjusts the spindle nut (7) of the threaded rod (3), wherein a first sensor for detecting the axial position of the threaded rod is associated with the threaded rod (3) and a second sensor for detecting the axial position of the spindle nut is associated with the spindle nut (7), comprising the method step of determining the position of the threaded rod (3) by means of the first sensor while a slight axial force occurs as a result of the contact of the clamping jaws against the tool or the workpiece and continued adjustment of the spindle nut (7) until a specified pick-up difference (12) between the first sensor and the second sensor is detected by means of the second sensor. The invention further relates to a device for performing the method.

The invention relates to a method of simulating angle bending model using position based dynamics. The method includes the steps of 1, making a grid model file of a deformable body to be simulated, and importing the grid model file into a deformable body simulation system; 2, defining variants of the grid model file of the deformable body; 3, according to Newton's second law and theorem of motion for particles, calculating a node prediction position p of a deformable body grid model after the deformable body grid model experiences an external force f<ext> for a time step Deltat; 4, building an angle bending model among nodes of the deformable body grid model; 5, outputting an image of the deformable body grid model at a node accurate position x, and using the node accurate position x as a node initial position of a next time step; 6, repeating the steps 3 to 5, and sequentially outputting images of frame of the deformable body grid model until simulation animation of bending deformation of the deformable body is obtained. The method has the advantages that the calculating process is easier, and calculation cost is reduced.

Disclosed is a billiards cue of adjustable weight and length, comprising a front end hand-supported rod (1), and a rear end hand-gripped rod (2). A connection rod (3) is connected to the front end hand-supported rod (1) from behind, said connection rod (3) having sleeved thereupon several rings (4, 5, 6), which rings (4, 5, 6) are divided into three specifications according to thickness, weight and density. A user can select different round rings (4, 5, 6) to adjust the weight and length of a billiard rod as required.

The invention relates to a method of clamping a tool or a workpiece, using an electric actuator (1) having a housing (2) attached to a work spindle of a machine tool and in which a threaded spindle (3) for moving jaws of a chuck is axially displaceable, and an electric servomotor (4) having a rotor connected with a drive wheel (6) that moves a nut (7) on the threaded spindle (3), a first sensor being associated with the threaded spindle (3) for detecting the axial position thereof, and a second sensor being associated with the spindle nut (7) for detecting the axial position thereof, and including the method step of determining the position of the threaded spindle (3) by the first sensor when a slight axial force occurs due to contact of the clamping jaws with the tool or the workpiece, and continued movement of the spindle nut (7) until a specified sensor difference (12) between the first sensor and the second sensor is determined by the second sensor. The invention further relates to an apparatus for carrying out the method.

The invention relates to an axial cage (1) for cylindrical rolling elements, which consists essentially of a thin-walled annular disk (2) with a W-shaped profile cross-section, formed to an annular The inner radial edge (3) on the inner edge of the disc (2), the outer radial edge (4) formed onto the outer edge of the annular disc (2) and through the inner axial profile section and the outer axial profile section (5,6) The central U-shaped crimp (7) connected to the radial rim (3,4) and having the same radial extension as the rim (3,4) forms the axial cage contour segments of . In this case, a plurality of rectangular cage pockets (8) evenly spaced from one another result from the central bead (7) and the adjoining axial profile sections (5, 6), between which cage pockets Form the same number of pocket webs (9) connecting the edges (3, 4) to each other, which hold the cylindrical rolling elements (10) at an even distance from each other in the cage pockets (8) , and guide these cylindrical rolling elements in the direction of rotation. According to the invention, the axial cage (1) is characterized in that the outer radial edge (4) is configured with an angle of inclination (α) pointing away from the central U-shaped curl (7), and that the cage pockets (8) have an axial length greater than the minimum axial distance between the inner side (11, 12) of the inner radial edge and the outer radial edge (3, 4), so that the cage pocket (8) is at least Extends into the outer radial edge (4) of the axial cage (1) and is formed in the axial cage ( 1) is formed on the outer radial edge (4) at the height of the rolling axis of the rolling element (10) with a rounded thrust projection (14) for the outer end side (15) of the rolling element (10) ).

A roll-to-roll distance measuring device comprises a sensor device for measuring the distance between at least a pair of rolls disposed oppositely to each other on both sides of a cast piece passage in a continuous casting machine.  The sensor device comprises a movable sensor head having a cylindrical body part, a head part which is arranged continuously with the upper end of the body part in a conical shape and the top of which is convexed toward the upper roll among the pair of rolls; and a cylindrical sensor housing for storing the sensor head.  A reception part serving as a space for receiving foreign matters is formed between the bottom end outer peripheral surface of the head part and the upper end inner peripheral surface of the sensor housing when the bottom end of the head part is intruded into the sensor housing.  The bottom part of the reception part is formed in an annular flat surface in the top plan view thereof.

The invention discloses a treatment method for short grouping in grouping encipher algorithm. Wherein, the enciphering comprises: after enciphering the last full-grouping plaintext, the sender divides the obtained cipher text into two parts for cipher text grouping with one part; forming a complete grouping by concatenating a filling part and said short-grouping part; enciphering the complete grouping to send to receiver. The deciphering comprises: after receiving the last full grouping ciphertext grouping, the receiver deciphers the grouping to divide the deciphered groupings into two parts with one as said short-grouping plain text and concatenate another part with received ciphertext grouping to obtain complete ciphertext grouping for the last plain text after deciphering. This invention can improve data transmission security greatly.

This invention discloses a method for positioning program exception including the following steps: 1, generating a first executive file and a code information file, 2, loading said code information file in the first executive file to generate a second executive file containing a code information file block, 3, starting the second executive file to load an exception capture and positioning dynamic library, 4, when the second executive file is abnormal, the system core data are generated including a memory address called by the function, 5, fetching the code information file from said second executive file to compare said system core data and the code information file to determine the position of the exception of the program.