43results about How to "High precision size" patented technology

A method of manufacturing a cylinder apparatus wherein although an opening of a cylinder body is closed by a covering member, processing and parts costs are reduced, fluid leakage is prevented, and the apparatus can be reduced in size. The cylinder apparatus includes a piston (17) which is caused to slidingly move in a bore (26) of a cylinder (21). The cylinder 21 includes a covering member (43) provided in a bottom portion (42) of the cylinder (21), and a cylinder body (46) having an opening that is closed by the covering member (43). The covering member (43) is friction stir welded to the cylinder body (46).

The invention proposes insulating profiles of a polymer material, and methods for producing the insulating profiles, are disclosed.

A method of manufacturing an in-mold decorative molded article capable of transferring a decorative pattern with target dimensions at a target position of a decorative molded article according to thepresent disclosure includes supplying an in-mold transfer foil to a metal mold, in which a clear layer having transparency and lower extensibility than a base material film is formed in the first layer on an in-mold raw fabric configured by forming a mold releasing layer and a primer layer on the base material film and a decorative figure is printed in the second and subsequent layers on the in-mold raw fabric, clamping the metal mold, injecting and cooling a molding resin and taking out an molded article formed of the molding resin cooled and cured in the metal mold in which the clear layer and a transfer layer having the decorative figure in the in-mold transfer foil are integrated on the surface by opening the mold, molding the molded article integrally with a cutting portion not necessary for a target product inside the metal mold by the molding resin at an outer periphery of the product and arranging a boundary of a printing region of the clear layer in the in-mold transfer foil in the cutting portion so as to be larger than the outer periphery of the product.

The invention discloses a processing method for a wedge-shaped plate forging, which belongs to the technical field of steel forging and forming. The problem to be solved by the present invention is to reduce the production cost of the wedge-shaped plate. The technological process of the present invention is steel ingot heating → jaw pressing → chamfering → bottom removal of ingot → first upsetting → first drawing of rectangular blank → second upsetting → second drawing of rectangular blank → third drawing Rectangular blank→half-die forging with special upper anvil→heat treatment→finishing each part to the finished product size, the special upper anvil is an upper flat anvil, and the angle between the bottom edge of the upper flat anvil and the horizontal plane is less than or equal to the wedge angle of the wedge plate forging. The present invention adopts two upsetting and two drawing forging forming while changing from the traditional round but not square to square forging process breakthrough. The special flat anvil is used for the final fire finishing, and the special tool is used for forging forming to make the wedge-shaped plate forging qualified at one time. The rate reaches more than 95%, the metal fiber streamline is better, the operation is simple, and the weight of the forging blank process is reduced. The invention is used for processing wedge-shaped plate forgings.

The invention aims to provide a surface treatment method for a resin molded product enhancing adhesion strength of a printing ink or a coating in the surface of the resin molded product having hardly printing property or hardly coating property and not impairing dimensional precision of the resin molded product. The resin molded product having the hardly printing property or the hardly coating property, a polishing stone and water are thrown into a treatment vessel and are made to flow in a form of whirlpool and the resin molded product and the polishing stone are made to collide. Thereby, roughening of ten-point average roughness of surface of the resin molded product is carried out to 10 [mu]m-40 [mu]m.

The invention discloses a fully automatic laser scanning tester, which comprises a frame, a scanning device, a material loading device, a first plasma fan, a second plasma fan, a testing device and a receiving device. The scanning device is arranged on the frame Inside, the loading device is set on the frame, a test cover is set above the loading device, the bottom of the test cover is set on the frame, and a test device is set on the top of the test cover. A receiving device is arranged on the test device, the receiving device is connected to the test device, a first plasma fan and a second plasma fan are respectively arranged in the test cover, and the fixed end of the first plasma fan is arranged on the rear side of the test cover , the fixed end of the second plasma fan is set on the right side of the test cover, a display screen is set on the front side of the test cover, and the test device is connected to the display screen to reduce production costs, reduce production efficiency, and have high precision dimensions , has good market application value.

The invention discloses an integral advancing scraping and rolling compound cutter for flexibly boring, scraping and rolling. A scraping head, a boring head and a rolling head are integrated, and scraping and rolling processing are performed during advancing. The integral advancing scraping and rolling compound cutter is simple in overall structure, is convenient to manufacture, and is low in cost; high-accuracy size and shape control and good guidance can be realized, scraping becomes smoother, and wave marks and errors on a processing surface of an inner hole in a previous procedure can be eliminated, so that a completed surface becomes smoother, and a better surface profile is formed; and moreover, a plurality of processing procedures are completed continuously, so that processing time is saved.

The invention discloses a method for rolling, extruding and compounding near-net forming of a large-scale outer contour sudden cross-section ring, comprising the steps of: S1. Pre-rolling the blank after upsetting and punching to obtain a ring blank with a uniform wall thickness and a large-diameter rectangular cross-section ; S2, place the pre-rolled ring blank on the extrusion die. The extrusion die includes a core die with limit flanges at both ends and a number of lobe dies evenly distributed around the axis, and the lobe dies are set along the axial direction. There are multiple stages of extrusion blocks, and each stage of extrusion blocks is controlled by its own high-pressure push rod. Multi-directional continuous local incremental radial extrusion is used to form the abrupt contour of the outer surface of the ring blank step by step along the axial direction to obtain special shapes. Ring blank; S3. The target ring is obtained by forming the special-shaped ring blank through radial closed near net rolling. The method has smaller forming force and lower energy consumption, can restrain the outer diameter of the ring from growing, has high material utilization rate, and greatly improves the comprehensive performance of the product.