32results about How to "Increase axial pressure" patented technology

Projections protruding towards a cam plate and a disc are provided on both axial side surfaces of the retainer at a plurality of positions at which phases of the projections in the circumferential direction are offset from pockets. One axial direction surface of the cam plate and the disc are formed with concave portions at portions facing the respective projections. The concave portions have an axial depth deepest at a center portion thereof in the circumferential direction and becoming shallower towards both end portions thereof.

The invention discloses a milling cutter special for a numerical control milling machine. The milling cutter comprises a cutter handle and a cutter bit. The cutter bit is provided with a connecting groove. A threaded hole is formed in the connecting groove. A clamping connecting groove is formed in the cutter handle. An extension section is arranged between the cutter handle and the cutter bit. The two end portions of the extension section are provided with matching grooves. A connecting block is arranged between the corresponding matching groove and the connecting groove, and a connecting block is arranged between the corresponding matching groove and the clamping connecting groove. The connecting blocks are provided with installation holes matched with the threaded hole. The corresponding connecting block and the cutter handle are connected through a first fastener matched with the threaded hole, and the corresponding connecting block and the cutter bit are connected through a first fastener matched with the threaded hole. The extension section is provided with a center hole used for being connected with the cutter bit. The extension section and the cutter bit are connected by arranging a second fastener matched with the center hole. According to the purpose, the milling cutter special for the numerical control milling machine is provided, it is ensured that small parts can still be machined in the situation that the distance between a main shaft and a clamp is increased by increasing the overall length of the milling cutter, the position of the main shaft does not need to be repeatedly adjusted, the machining process is simplified, and the work efficiency is improved.

An apparatus and method for forming a design on an expanded bead foam article such as an exercise roller is provided.

The invention discloses a pressure-bearing contact type shaft seal ring which comprises an outer ring metal framework, an inner ring metal framework, a seal ring main body and a seal ring, wherein the seal ring main body is made of an elastomeric material. The pressure-bearing contact type shaft seal ring is characterized in that a corrugated structural segment is arranged between the outer ring metal framework and a central inner ring, an annular raised-tooth spring is installed on the end surface of an inner flange of the inner ring metal framework or a cylindrical spring is installed on the end surface of an outer flange, the seal ring or a combined seal ring is installed in the central inner ring of the seal ring main body, and the corrugated structural segment is an M-shaped corrugated structural segment or an S-shaped corrugated structural segment. The seal ring still has good sealing performance under a pressure environment and also has simple manufacture, easy installation andlong working and use life.

The invention discloses a spindle system for realizing friction surfacing with a shaft shoulder. The spindle system comprises a round bar consumable, a cylindrical shell, a hollow spindle, a shaft sleeve, a self-locking clamping mechanism and a rigid shaft sleeve, wherein the hollow spindle is coaxial with the cylindrical shell and is arranged in the cylindrical shell, and the shaft sleeve slides up and down along an inner hole of the hollow spindle; and the self-locking clamping mechanism is fixed to the lower end of the hollow spindle. The upper end of the round bar consumable is fixed to the shaft sleeve, and the lower end of the round bar consumable contacts with the surface of a workpiece through the self-locking clamping mechanism and the rigid shaft sleeve. When the hollow spindle rotates at high speed, the round bar consumable and the rigid shaft sleeve are driven by the shaft sleeve and the self-locking clamping mechanism at the lower end to rotate at high speed, and the shaft sleeve moves down along the hollow spindle at the same time, so that the round bar consumable rotates at high speed while can move down along the axial direction. The rigid shaft sleeve plays a role of friction and extrusion without consuming the shaft shoulder, and therefore the friction surfacing process with the shaft shoulder is realized. The spindle system can improve the use ratio of the round bar consumable and effectively eliminates the weak connection defect of the edge of a traditional friction surfacing layer, and thereby obtaining the friction surfacing layer with a good mechanical property.

An apparatus and method for forming a design on an expanded bead foam article such as an exercise roller is provided.

The invention discloses a high-voltage electric pulse in-situ anti-permeability gas-bearing reservoir two-phase seepage test device, comprising a stress loading system, a high-voltage electric pulse fracturing operating system and a water-gas two-phase seepage system; the stress loading system It includes a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system includes a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage flow The system includes a water-gas pressure loading module and a flow data acquisition module. By simulating the coal body test of electric pulse under different ground stress, different voltage and other conditions, and simulating the physical test of high-voltage electric pulse fracturing coal body under the action of multi-physics coupling, the in-situ permeability enhancement of high-voltage electric pulse can be carried out. Reservoir two-phase seepage test.

The invention discloses a communication signal tower reinforcement device and reinforcement method. Disclosed is a method for improving the connection stability of reinforcement rods through a double-layered clamping structure, and using U-shaped clamping rods to make the reinforcement rods more closely fit the clamping structure. A reinforcing device and a reinforcing method for a structural adaptor to avoid torsion of the adaptor, characterized in that it comprises a length-adjustable reinforcing assembly, which is arranged at both ends of the reinforcing assembly and is used for connecting the reinforcing assembly to the main pipe flange of a signal tower. The connecting assembly and the tightening assembly for fastening the reinforcing assembly are characterized in that the tightening assembly can improve the connection stability of the reinforcing assembly, and the adapting assembly has a double support structure, which can prevent the adapting assembly itself from being twisted.