Substantiation of the Density of the Soil Formed by a Ridge Drill Roller

A method is presented for determining the density of soil in the ridge from the simultaneous action of spherical disks and a conical roller wheel. Heuristic and technical analysis of the process of forming soil ridges by rollers made it possible to conclude with a 90 % reliability that the main factorsб which significantly affect the quality of soil ridge formation, are the angle of attack of spherical discs (α = 10°), the speed of the roller (vс = 5.4 km / h) and the compression force of its spring (Fspr. = 180 N).

On the Determination of the Main Parameters of a Dam Compactor

The article highlights the issues of determining the main parameters of a dam compactor of a mounted trencher for cutting temporary sprinklers. It also finds out the angle of advance of the compaction soil of the inner part of the ditch using a conical roller and the outer part of the ditch that determines the parameters of the ditch and working body

Analysis of multi-sensory CMM use for the measurement of rolling bearing elements

The possibility of using the multi-sensory coordinate technology for measuring the selected elements of rolling bearings is presented. The results of spherical cap of conical roller radius and angle between the main and auxiliary track of the conical bearing inner ring measurements are also presented.

The Development of Database System of Parameter and Coefficient for the Common Shafting Parts

This article illustrates with the criterion of the common shafting accessorys design, using the Visual C++ and the Access to primarily set up the parameters and coefficients database of the shafting accessories, which are mostly the gear and the conical roller gearing. Setting up its function as demanding, appending and deletion, etc. Making the data processing for mechanical design and other fields conveniently. Through this research and exploitation, It can account for setting up the parameters and coefficients database of the standard accessory is necessary and really count for engineering.

New Method Using Piezoelectric Jerk Sensor to Detect Roller Bearing Failure

An acceleration sensor is usually used to examine for roller bearing damage. It is difficult, however, to detect abnormal vibration and examine for roller bearing damage when rotation speed is low. The final target of this study is to establish a bearing damage diagnosis system based on the piezoelectric jerk sensor we developed, which can be used for both low- and highspeed rotations. For this purpose, this paper aims to identify the features of an abnormal vibration detection signal at a low rotation speed, propose a new roller bearing damage diagnosis method that uses the features, and clarify the validity of the method. Experiments are conducted to analyze a scratch purposely made on the outer ring of a conical roller bearing that rotates at the low speeds of 10 or 40 rpm. The results verify the advantages of using the jerk sensor for the bearing damage diagnosis and the validity of the method proposed in this paper.

Generation of Globoidal Cam Surfaces With Conical Roller-Followers

Without solving any nonlinear contact equations usually encountered in traditional approaches, a relative simple, yet useful procedure to the profile determination of a globoidal cam with a conical roller-follower turret is presented. From the machining point of view for such a spatial cam cut by a conical milling/grinding tool by following its angular roller-follower turret motion, the surface geometry of the cam can be represented as the swept surfaces of the tool paths of the used cutter with a size equal to the conical roller-follower of the cam. To determine the swept surfaces of the conical tool paths, the pitch surface generated by the locus of the tool center is first identified. Subsequently, to locate the swept surfaces for the cam surfaces, the meshing vectors and meshing angles are then defined based on the pitch surface. To verify the feasibility and accuracy of the proposed procedure, both analytical formulations and numerical results are shown and compared to those obtained by an earlier technique based on the theory of screws.

Fundamental Characteristics of a New Variable Torque Clutch With Skewed Rollers

In this paper, a new variable torque clutch with skewed rollers, in which the cylinder rollers and the inner and outer races are assembled like a conical roller bearing except that each roller axis inclines with an equal angle to the races axis, was introduced and then investigated theoretically and experimentally. The geometry of the race surface was analyzed and the parametric equations of contact line etc. were derived. A roller-wedge model, based on the motion relationship between the skewed rollers and the two races, was proposed for this clutch. From the static equilibrium condition of the roller, the transmitted torque capacity and kinematics characteristics are evaluated properly. Several prototypes of this clutch were manufactured and measured to show the validity of this design idea and the theoretical results. The computation results were found to in good agreement with the experimental data. In addition, the influences of design parameters on the fundamental characteristics of the variable torque clutch are discussed in detail.