It was indicated by the calculated result of TCA that the meshing quality of the pair of gears with pressure angle of 22°30'generated by the planing tool with nominal pressure angle of 20°is the same as that by the planing tool with nominal pressure angle of 22°30'.

At last, this paper completes the entity proplasm to the cam mechanism based on SolidWorks2000. At the same time, the paper also perform some thesecond development to SolidWorks2000 by VC++6. 0 so that the manufacture and mesh process can be simulated.

Simulation of plastic deformation in gear tooth is implemented in consideration of mesh stiffness, which is fundamentally identical to the results from experiments.

As a result,the gear precision can be improved by the technology of high speed honing and the degree of roughness is Ra0.4,which attributes to preventing the undesired sound of gearing mesh from being higher than 70 dB.

It was found that the frequency of F2 roller chatter mark is 14 Hz,and which is caused by torsinal vibration of main drive system excited by transfer case mesh impact.

According to the measurement results of involute planet gear decelerator made by Japan, the influences of gear knife modifieation eodffieient to planet gear transirnission in built—in point processing, especially transition curve interference in internal engage pair, and tip circle diameter cut are analysed.

This paper proposes a new machining method of dram gear generating method in numerical control chine,which is simple and convenient and can pledge accurate engage gears.

This article introduces the program design method on gearing design and checking computations of external toothing involute cylindrical gear under unstable varying stress and suggests main calculating formulars and imple diagram.

This paper describes the tooth forms of an external toothing and chamfering gear shaping cutter and chamfering gear shaper cutters designed by old routine.

Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing

With helix angle chosen as parameter, the criterion for the existence of meshing boundary line on the surface of TI worm gearing is derived.

Results show that there can be four situations for meshing boundary line on the tooth surface of gear, namely, inexistence of meshing boundary line, a unique line, two lines, and two coincident lines.

If the helix angle is equal to or slightly smaller than the bigger angle, which makes two meshing boundary lines superpose, a preferable meshing performance is obtained.

In the following sections, some problems are discussed, such as the assembly form, the construction characteristics, the correct meshing condition, the continuum transmission condition and so on.

Anewwavelet-based geometric mesh compression algorithm was developed recently in the area of computer graphics by Khodakovsky, Schr?der, and Sweldens in their interesting article [23].

This leads to a very efficient geometric mesh compression algorithm as proposed in [23].

As a result, the algorithm in [23] outperforms several available geometric mesh compression schemes used in the area of computer graphics.

We confirm here that the shifts and dilations of the wavelets used in [23] for the regular mesh, as expected, do indeed form a Riesz basis of L2(?2) by applying the more general theory established in this article.

Our main result is that the rate of convergence of the two proposed iterative schemes depends only on the mesh norm and the

They need to engage in a dialogue with various consumer groups using multiple channels.

The ubiquitin/proteasome system may regulate AR via mechanisms that do not engage in receptor turnover.

An attempt at family intervention found it difficult to engage relatives in treatment; however, where such intervention did take place, there was a fall in the total number of relapses.

Seemingly impersonal consultations and failure to engage with underlying problems contributed to the high drop-out rate.

However, a recent study found evidence for an opposite causal direction, i.e., persons with good cognitive function more often start to engage in leisure-time activities.

The authors foresee that a productive, high accuracy, long tool life gear finishing method can be developed on ECG principle. Experiments show an accuracy in profile of 0. 01mm. Crowning in tooth width can easily be obtained by photo-electric control of D. C. supply, while surface finish is a little bit better than horning. Machining time for a hardened gear of m=3.25. Z=32, B=40, =20 27 is about 6 minutes. stock removal 0. 06mm over chord. Research works are made in three respects: (1 ) The ability of correcting...

The authors foresee that a productive, high accuracy, long tool life gear finishing method can be developed on ECG principle. Experiments show an accuracy in profile of 0. 01mm. Crowning in tooth width can easily be obtained by photo-electric control of D. C. supply, while surface finish is a little bit better than horning. Machining time for a hardened gear of m=3.25. Z=32, B=40, =20 27 is about 6 minutes. stock removal 0. 06mm over chord. Research works are made in three respects: (1 ) The ability of correcting geometric form in ECG of gears, its principle, and methods of improving (2 ) Dynamic behavior of dual-flank meshing process in ECG of gears (3 ) False tooth profile derived from dual-flank meshing process its the- orectical analysis and methods of preventing.

This paper describes the concaved gear tooth profile after shaving resulting from the unbalance of cutting forces due to the variation of numbers of contact points acting on the teeth flanks, during backlash-free meshing engagement between the shaving cutter and the gear workpiece. To maintain the same number of contact points between the cutter and the workpiece, this paper suggests the balance contact shaving method by using smaller pressure angle shaving cutter, that is using the combination of the balance...

This paper describes the concaved gear tooth profile after shaving resulting from the unbalance of cutting forces due to the variation of numbers of contact points acting on the teeth flanks, during backlash-free meshing engagement between the shaving cutter and the gear workpiece. To maintain the same number of contact points between the cutter and the workpiece, this paper suggests the balance contact shaving method by using smaller pressure angle shaving cutter, that is using the combination of the balance contact shaving cutter and modifying the tooth profile of shaving cutter.

At present the formula used to calculate meshing forces between internal pins and cycloid disk in designing the cycloid drive, has been derived on the premise that all pins mate with the cycloid disk. But some testing results obtained at home and abroad indicate that this formula is not consistent with practice to a considerable extent. In order to measure the real values of meshing forces and make use of this to set up a formula which is consistent with prac-tice, also in order to evaluate the strength of cycloid...

At present the formula used to calculate meshing forces between internal pins and cycloid disk in designing the cycloid drive, has been derived on the premise that all pins mate with the cycloid disk. But some testing results obtained at home and abroad indicate that this formula is not consistent with practice to a considerable extent. In order to measure the real values of meshing forces and make use of this to set up a formula which is consistent with prac-tice, also in order to evaluate the strength of cycloid drive in which some mo-dified cycloid tooth wheels are mounted, for the reducer Bw 220--71(speed ratio is 71), in which are mounted different cycloid tooth wheels(epitrochoid, inter-ferential and epicycloid respectively), the meshing forces have been measured and the results of distribution of meshing forces have been obtained. The testing results indicate that, the maximum meshing force for cpitroch-oid is 2.5～3.2 times larter than theoretical value, the maximum meshing force