48results about How to "Good meshing effect" patented technology

The invention provides a cup-shaped harmonic gear with a common tangent type double-circular arc tooth profile. The cup-shaped harmonic gear is composed of a wave generator, a flexible gear and a rigid gear; the tooth profiles of the flexible gear and the rigid gear of the harmonic gear transmission are common tangent type double-circular arc plane tooth profile. The invention also provides a tooth profile design method of the cup-shaped harmonic gear with the common tangent type double-circular arc tooth profile; the tooth profile design method comprises taking the coning deformation of the cup-shaped flexible gear in the axial direction into account, and in order to avoid interference, performing enveloping and fitting calculation on the circular arc part of the tooth root of the rigid gear by use of the movement locus of the gear teeth of the front section of the flexible gear according to the maximum radial deformations on the front, middle and rear sections of the flexible gear and the movement locus difference of the gear teeth of the flexible gear relative to the tooth groove of the rigid gear, and performing enveloping and fitting calculation on the circular arc part of the tooth crest of the rigid gear by use of the movement locus of the gear teeth of the rear section of the flexible gear so that the flexible gear and the rigid gear are in continuous conjugate transmission in the entire engagement interval. The cup-shaped harmonic gear with the common tangent type double-circular arc tooth profile has the advantages of increased number of engaged teeth, increased engagement contact surface, high bearing capacity, long fatigue life and the like.

This invention relates to a method for connecting and prolonging woods in the construction field, which sets mutual coincident teeth at the connecting end of a ruled material to prolong the material, in which, the set of teeth can be standardized and the meshing process can be applied in batch, the intensity of the meshed material is equal to the integer one, especially, the design of wide and narrow teeth synchronously increases the meshing result.

A starter is disposed with an elastic body which generates slide resistance between the inner circumferential surface of a cylinder hole of a movable core and a first annular groove section of a flange section of a hook and the starter has an air damper function; and consequently, the effect of suppressing compression of a drive spring can be sufficiently obtained without reducing the suction speed of a plunger as much as possible and an engine can be rapidly started up.

The invention discloses a modification method for a harmonic driving involute profile. A point B serves as a point of tangency of a modification curve and a involute tooth surface. A point E serves asa point of intersection of the modification curve and an involute addendum circle. A coordinate system XOY is built with a radial OA as the abscissa axis. A coordinate system X1OY1 is built with a radial OC as the ordinate axis. After the steps of determining the coordinates of the point B and the point E in the coordinate system X1OY1 and the slope of a tangent of the involute at the point B, determining a flexible gear central point approximate movement track curvilinear equation, determining the parameter equation of the modification curve in the coordinate system X1OY1 and the like, a system of simultaneous equations is built and used for solving parameters, and the parameter equation of the modification curve in the coordinate system XOY is obtained through conversion of the coordinate system. According to the modification method, the harmonic driving involute profile is modified based on the harmonic driving kinematics theory, processing manufacturability and economy can be guaranteed, engagement performance is improved, the advantages of various harmonic tooth profiles are integrated, and the modification method can be widely applied to the technical field of harmonic gears.

The invention discloses a power maintenance tool dispensing device for changing an elastic component pressure regulating stabilizer through hand sorting. An external hand wheel handle rotates with a hand wheel rotation circle; a butt-joint rod is connected to a rotation drum to drive the whole interior of the device to operate, and a gear sleeving the rotation drum to rotate synchronously; a gearchain drives movable dispensing boxes to operate synchronously through the gear, and allows box cover telescopic plates to automatically open and close through elastic components; sliding blocks can change the internal air pressure of the boxes through gravity changing, clamping blocks and clamping grooves are in opening and closing connection, the internal adsorption force becomes larger, the internal weight of the boxes is balanced to prevent shaking off; since a convex positive magnetic ring and a convex negative magnetic ring at the front end of the gear attract each other to drive rotation, and the manual rotation load is reduced; during rotation, tools in each dispensing box can be viewed at a window, manual operations can be allowed, the operations can be repeated, the practicability is high, storage and searching are facilitated, and time and effort can be saved.

The invention belongs to nutation movable tooth transmission devices, particularly relates to a central gear tooth shape of a nutation movable tooth transmission mechanism and a design method of the central gear tooth shape. The central gear tooth shape comprises a central gear and is characterized in that the tooth shape of the central gear (1) is a spherical arc curve, the tooth shape of each single tooth (2) is formed by two symmetric hemispherical circular curves, each semispherical circular curve is formed by an arc curve a1b1 between a tooth root point a1 and a tangent point b1 and a circular curve between a tangent point b1 and a tooth vertex b1, and a joint of each two circular curves forms the spherical arc curve tooth shape integrally smooth through smooth transition. The central gear tooth shape of the nutation movable tooth transmission mechanism is reasonable in design, simple and practical, convenient to process, low in noise and the like, and root cutting is reduced while meshing performance is improved.

The invention belongs to the technical field of packaging, and discloses a plastic kneader. The plastic kneader comprises a fixed base; a top cover is arranged on the fixed base; a press plate is hinged to the side wall of the top cover; a driving transmission cylinder is vertically arranged on the fixed base and penetrates through the top cover; the driving transmission cylinder is in flat key connection with the eccentric position of the top cover; an air pump is externally connected with the upper end of the driving transmission cylinder; a penetrating hole is formed in the fixed base; an air flue communicating with the penetrating hole is arranged inside the fixed base and externally connected with the air pump; a driven transmission cylinder is inserted into the penetrating hole; the cylinder body section, on an inner cavity of the top cover, of the driving transmission cylinder is in flat key connection with a driving stirring piece; the upper end of the driven transmission cylinder extends into the inner cavity of the top cover but is not connected with the top cover; and the section, extending into the top cover, of the driven transmission cylinder is connected with a driven stirring piece. The plastic kneader can engage materials at the dead corners and improve the overall kneading effect of the materials.

The invention discloses a motor shaft for automobile windscreen wipers, comprising a horizontal motor shaft. One end of the motor shaft is sleeved with a horizontal fixed cylinder. The motor shaft isrotationally connected to the inner wall of the fixed cylinder. The fixed cylinder is provided with a horizontal connecting slot on one side of the top end thereof. A vertical gear plate is arranged above the motor shaft. The motor shaft is provided with an external thread on the side wall of one side near the gear plate. The external thread and the gear plate are meshed with each other. An oil tank is fixed to the inner wall of one side, near the connecting slot, of the bottom end of the fixed cylinder. One outer end of the motor shaft away from the oil tank is sleeved with a shaft sleeve, and the vertical section of the shaft sleeve is square. The vibration of the motor shaft can be buffered, and the motor shaft can be prevented from vibrating drastically to mismatch the gear plate and affect normal use of windscreen wipers. Moreover, the external thread of the motor shaft can be lubricated, in order to improve the meshing effect of the motor shaft and the gear plate and prevent theproblem that the motor shaft and the gear plate cannot rotate normally after passivation.