To meet the need of large-scale production , the YZA1200-N V-press was developed base on the YAZ750-N V-press, in this paper, main design content includes craft calculating, designing of the general outfit, pressing parts, transmission system, machine frame, hydraulic system , screw feed system and so on.

A monitoring strategy for visual navigation in multi-object environment with only one PT(Pan-Tilt) camera based on rough set theory under finite-state machine frame is proposed.

Four conditions of shock vibration during chain breaking have been discussed. 1. Breaking test on simple testing machine with main cylinder fixed on a foundation. In this case the only one vibrating mass is the piston, which rigidly connected the moving clamp of chain as a whole body with one degree of freedom. 2. Breaking test on testing machine with leaf spring isolators between machine and foundation. In this case vibrations of two vibrating masses with two degrees of freedom have been discussed. 3. Strength...

Four conditions of shock vibration during chain breaking have been discussed. 1. Breaking test on simple testing machine with main cylinder fixed on a foundation. In this case the only one vibrating mass is the piston, which rigidly connected the moving clamp of chain as a whole body with one degree of freedom. 2. Breaking test on testing machine with leaf spring isolators between machine and foundation. In this case vibrations of two vibrating masses with two degrees of freedom have been discussed. 3. Strength test on testing machine with leaf spring isolators. The effect of machine frame has been taken into consideration, and thus it forms a system of three masses with three degrees of freedom. 4. The effect of accumulator during breaking test. This is a problem of vibration with variable spring constant.In each case formulas for calculating shock pressure wave in main cylinder and displacements of vibrating masses have been derived. In order to clarify the characteristics of vibrations, numerical examples are worked out in each case. The results of these examples clearly show that installing the accumulator and leaf spring isolators are effective measures to minimize the influence of shock vibration.

This paper mainly introduces the type LGD721 loom, including the design analysis and study of its chief technical function, its basic structural characteristics, the machine frames and its major mechanisms (emphasizing that of the rapier picking system). It further deals with the characteristics of the technical properties of the machine with the process in testing its operation. The author has also tried to describe the common model of the popular rapier loom and hence proposes that our basic point...

This paper mainly introduces the type LGD721 loom, including the design analysis and study of its chief technical function, its basic structural characteristics, the machine frames and its major mechanisms (emphasizing that of the rapier picking system). It further deals with the characteristics of the technical properties of the machine with the process in testing its operation. The author has also tried to describe the common model of the popular rapier loom and hence proposes that our basic point should mainly be the development of the popular rapier loom.

This gantry type welding machine is an arc welding equipment developed for welding large box type construction of tens meters long. The maximum section of work piece to be welded can be 3m wide by 2.5m high. With a movable horizontal beam, the gantry welding machine can make splicing joint welding. The welding machine has drives on both sides. The fluctuation of travelling speed of machine frame is below 2%. The welding machine has two welding heads used for gas or electric welding and submerged...

This gantry type welding machine is an arc welding equipment developed for welding large box type construction of tens meters long. The maximum section of work piece to be welded can be 3m wide by 2.5m high. With a movable horizontal beam, the gantry welding machine can make splicing joint welding. The welding machine has drives on both sides. The fluctuation of travelling speed of machine frame is below 2%. The welding machine has two welding heads used for gas or electric welding and submerged arc welding respectively. For gas protected welding, mixed gas of 80O% Ar+20% CO_2 rich argonium mixture can be used. Non-spray efflux transit welding can be carried out under the presence of 30% Ar+70% CO_2. A tactile 2-D automatic tracing system is equipped at the welding head. The tracing precision is within 0.3mm.