6results about How to "Guaranteed Design Requirements" patented technology

The utility model discloses a boring clamp for a series of sliding blocks. The boring clamp comprises a bottom plate, a positioning block, a gland, a pressing plate, a supporting screw rod and a pressing screw rod, the positioning block comprises a lower positioning convex block, a middle positioning connecting plate and an upper positioning convex block; the lower positioning protruding block is connected with a concave hole in the middle of the bottom plate in an inserted mode, the middle positioning connecting plate is connected with the bottom plate, a positioning ring is arranged on the upper surface of the middle positioning connecting plate, the bottom of a to-be-machined sliding block is arranged on the inner side of the positioning ring, the gland is placed on the top of the to-be-machined sliding block, the pressing plate is placed on the top of the gland, and the pressing plate is used for pressing the to-be-machined sliding block through the pressing screw. The fixture is suitable for fixing various sliding blocks, namely, the various sliding blocks can be fixed on the lathe, so that a cutter on the lathe can conveniently bore the various sliding blocks, the machined sliding blocks can meet the design requirement and the precision requirement, the fixture is simple in structure and convenient to assemble and disassemble, the total machining time is shortened, and the machining efficiency is improved. And the processing efficiency is improved.

A flange inner long guide built-in adjusting element adjusting device includes a first flange, a second flange, an adjusting element and a flexible graphite sealing ring; the adjusting element is divided into three parts of a pull-out end, a cylindrical section and a guide section, and the corresponding first flange is divided into parts of an end, a transition section, a matching section and a tail section, the cylindrical section and the guide section are arranged in a cavity of the first flange, the pull-out end cooperates with the end of the first flange and the end of the second flange to form a closed structure, the guide section is in intermittent contact with the inner wall of the cavity of the first flange, and a gap is formed between the outer wall of the cylindrical section and the inner wall of the cavity of the first flange. The application can effectively avoid the problem that the adjusting element is stuck and cannot be taken out due to thermal deformation after the test, can ensure that the adjusting element can be conveniently disassembled and assembled under the cold and hot states of the test, and can ensure that the adjusting element has no excessive stress concentration during use.

The utility model belongs to the technical field of electrical performance testing. In view of the problems that an existing electrical performance testing device cannot comprehensively test the overall performance of odd-numbered nylon and cannot adapt to use requirements in multiple environments, the utility model provides an odd-numbered nylon electrical performance testing device which structurally comprises a base, and a heating cavity is formed in the top of the base; the heating assembly is arranged in the heating cavity; the testing assembly is arranged above the heating cavity in a manner of moving up and down; the lifting assembly is connected with the testing assembly so as to drive the testing assembly to move into the heating cavity; wherein the test assembly comprises a base which is connected with the lifting assembly; the lower electrode plate is arranged on the base; the upper electrode plate is arranged above the lower electrode plate in a manner of moving up and down; the vibration exciter is arranged on the base; and the lifting mechanism is connected with the upper electrode plate. The testing device can be used for measuring the electrical properties of the odd-numbered nylon in different environments, so that the actual properties of the odd-numbered nylon in a multi-environment use condition can be better reflected.

The present invention relates to the field of gas turbine machining technology, and in particular to a machining method for combined turning of a gas turbine casing, comprising the following steps S1: connecting a combination with a process ring to form a preliminary combination; S2, performing a first stage of turning to obtain a preliminary turning combination; S3, using a primary process ring as a positioning, assembling a fifth part with the primary process ring to form a secondary assembly; S4, performing a second stage of turning to obtain a turned finished part; S5, decomposing the turned finished part to obtain a secondary process ring and a turned fifth part, and assembling the turned fifth part with the combination to form a turned assembly. The present invention processes the combination of five casing parts together, and uses a process ring to realize the conversion of the machining datum, and divides the assembly into two parts for segmented machining, which not only ensures the design requirements of the combined machining, but also reduces the machining difficulty, solves the equipment limitation, and improves the machining efficiency and quality.

The invention discloses a parameter determination method of a field limiting ring terminal, a related device and a preparation method. The method comprises the steps that model parameters of physical models of a plurality of field limiting ring structures are obtained, each field limiting ring structure comprises an initial main junction and an initial field limiting ring located on one side of the initial main junction, and the widths of the initial field limiting rings corresponding to different field limiting ring structures are different; original parameter information is determined according to the multiple model parameters and the design withstand voltage value of the main junction, the field limiting ring terminal comprises the main junction and multiple field limiting ring areas located on one side of the main junction, and the original parameter information comprises the width of a field limiting ring in each field limiting ring area and the ring distance between every two adjacent field limiting rings; and performing simulation calculation on the field limiting ring terminal according to the original parameter information to obtain an actual withstand voltage value of the main junction, and adjusting the original parameter information under the condition that a difference value between the designed withstand voltage value and the actual withstand voltage value does not meet design requirements. The problem that in the prior art, it is difficult to design and obtain a field limiting ring terminal meeting the voltage withstanding requirement is solved.

The invention belongs to the field of coil spring heat treatment, and particularly relates to a heat treatment shaping method for a high-strength, high-toughness and high-elasticity GH578 alloy coil spring. According to the technical scheme, the heat treatment shaping method for the high-strength, high-toughness and high-elasticity GH578 alloy coil spring comprises the steps that the high-strength, high-toughness and high-elasticity GH578 alloy coil spring is clamped through a heat treatment shaping clamp, and then heat treatment is conducted; the heat treatment shaping clamp comprises a round clamping ring and a crescent-shaped positioning pin, the coil spring is screwed and placed in the round clamping ring, the crescent-shaped positioning pin is nailed in a gap between rings of the coil spring, and it is guaranteed that the gap between the inner rings of the coil spring is large, and the gap between the outer rings of the coil spring is small. According to the heat treatment shaping method for the high-strength, high-toughness and high-elasticity GH578 alloy coil spring, stable heat treatment shaping of the coil spring is achieved through the heat treatment shaping clamp, the design structure and elasticity requirements of the coil spring are guaranteed, the manufacturing qualification rate of coil spring parts is increased, and the manufacturing cost is reduced.