41results about How to "Small shape and position tolerance" patented technology

A torsion beam bush component comprises a tubular bush assembly with mounting support lugs and a limit ring at one end of the tubular bush assembly. The tubular bush assembly comprises an outer bush, an integrated axial inner bush and an integrated part integrally vulcanized by rubber materials. The integrated part is filled into an axial annular space between the outer bush and the integrated axial inner bush. The integrated axial inner bush is an integrated part comprising an inner bush and the supports lugs at two ends. The limit ring is flange plate with a threaded inner hole. During use, the tubular bush assembly is pressed to a torsion beam through interference fit, and the limit ring is integrally connected with the integrated axial inner bush mounted on the torsion beam in a threaded manner. A torsion beam suspension using the torsion beam bush component has improved assembling precision, overall performance and reliability. In addition, the torsion beam bush component is convenient to machine and mount and low in cost.

The invention discloses a hole opening method for a jack cylinder bottom and an auxiliary tool for welding. A stroke sensor detection rod installation hole is processed when the cylinder bottom is processed. When the method is used for opening holes at the cylinder bottom, a required hole opening cutter is short, thereby guaranteeing that the size and the form and position tolerance of the stroke sensor detection rod installation hole are small and improving coaxial accuracy of the stroke sensor detection rod installation hole and a cylinder. The invention further provides an auxiliary tool for welding, which is used for locating butt welding between the cylinder bottom of a jack and a cylinder set. Due to the fact that the stroke sensor detection rod detection rod installation hole is processed firstly, the hole is small in the size and the form and position tolerance. Therefore, when the auxiliary tool for the welding is used for datum transformation, error is little. Thus, coaxial degree between the stroke sensor detection rod installation hole and the cylinder is enabled to be high.

The invention discloses a high-precision plastic product forming device. The high-precision plastic product forming device comprises a support, a movable template, a first front die core and a secondfront die core. The movable template is internally provided with a rear die core. The support is provided with a slide rail used for being in sliding connection with the movable template. The supportor the movable template is connected with a lifting power piece. The movable end of the lifting power piece and the rear die core are both provided with connected first oblique planes. The first oblique planes are gradually heightened in the direction towards the first front die core along the second front die core. The transverse sliding of the movable end of the lifting power piece is used for controlling the rear die core to ascend to be attached to the front die cores and descend to keep away from the front die cores. By means of the oriented transverse sliding of the rear die core along the sliding rail and the oriented vertical sliding of the rear die core along a cavity part of the movable template, the attaching butt joint precision of the rear die core and the front die core is high, dislocation is not prone to occurring, a formed product cannot be crushed and is relatively good in appearance, and the form and location tolerance of the formed product is relatively small; and by means of the characteristics of oblique plane transmission, the power direction is flexibly changed.

The invention discloses a fixture for honing and manufacturing a piston-type refrigerating compressor connecting hole. The fixture or honing and manufacturing the piston-type refrigerating compressor connecting hole comprises a fixture base, a reversing positioning rod, a dual-semispherical floating spacing sleeve, a workpiece positioning component A, a tool and a workpiece positioning component B. By adopting the novel structure scheme, the labor productivity in manufacturing workpieces can be improved; the production cost can be lowered; the product quality can be improved; and resources can be saved, and the efficiency can be improved.

The invention discloses a torsion beam lining component, which comprises a barrel-shaped body lining assembly with mounting supporting lugs and an upper limiting frame and a lower limiting frame which are positioned at one end of the barrel-shaped body lining assembly with the mounting supporting lugs, wherein the barrel-shaped body lining assembly with the mounting supporting lugs is an integrated part formed by integrally vulcanizing a lining outer sleeve, an integrated shaft-type lining inner sleeve and a rubber material filled in an axial annular space between the lining outer sleeve and the integrated shaft-type lining inner sleeve; the integrated shaft-type lining inner sleeve is an integrated part comprising a lining inner sleeve and the supporting lugs at two ends; and the upper limiting frame and the lower limiting frame are an upper half flange and a lower half flange which are provided with mounting lug plates and have the same shape. In a used state, the barrel-shaped body lining assembly is pressed on a torsion beam in an interference fit manner; and the upper limiting frame and the lower limiting frame are connected with the integrated shaft-type lining inner sleeve arranged on the torsion beam through mounting bolts to form a whole. By using a torsion beam suspension of the torsion beam lining component, the mounting precision is improved, and the performance and the reliability of the whole vehicle are improved; the torsion beam lining component is convenient to manufacture and mount; and the cost is low.

The invention relates to a harmonic reducer, and belongs to the field of manufacturing of mechanical arms. The harmonic reducer is provided, an output end is connected with joints at high precision, the joints are assembled conveniently, a rear end cap is arranged at the rear end of the harmonic reducer on a first mechanical arm joint, a plurality of rear end cap connecting screw holes which are distributed in the peripheral direction are formed in the rear end cap, and a step is further arranged at an end of the rear end cap; and a second joint fixing hole which corresponds to a connecting screw hole is formed in a second joint, a second joint fixing screw penetrates through the second joint fixing hole and is fixed in a connecting screw hole, and therefore, the rear end cap is connectedwith the second joint. The original traditional speed reducer flange plate connecting method is abandoned, thus, the harmonic reducer mechanism is compact and simple, form and location tolerance is relieved, an effect of improving the product connecting precision is achieved, and the production cost is reduced on the basis of reduction of accessories.

The invention discloses a part powder outlet hole repairing method in powder laying printing, and relates to the technical field of 3D printing. The problem that in traditional powder outlet hole repairing, due to the gas reverse phenomenon generated in welding of a last powder outlet hole, welding cannot be conducted or the welding quality does not reach the standard is solved. The part powder outlet hole repairing method in powder laying printing comprises the steps that a powder laying printing sample piece and a blocking piece are included, a powder outlet hole is formed in the sample piece, and the powder outlet hole is matched with the blocking piece in shape and size; and laser welding is conducted on the sample piece and the blocking piece under the vacuum environment, and the blocking piece blocks the powder outlet hole. The part powder outlet hole repairing method in powder laying printing is used for repairing work of the part powder outlet hole in 3D powder laying printing.