The invention specifically discloses a technological method for processing a differential casing and a processing device. The method comprises steps as follows: (1), a numerical control vertical lathe is selected; (2), a hydraulic inner hole expanding core lathe clamp is mounted on a working table of the numerical control vertical lathe; (3), a lathe tool for processing a differential casing bearing fit excircle, a differential casing bearing fit end surface, a driven gear fit excircle and a driven gear fit end surface is selected, and the lathe tool is mounted on a rotary cutter tower of the numerical control vertical lathe; (4) a program for processing the differential casing bearing fit excircle, the differential casing bearing fit end surface, the driven gear fit excircle and the driven gear fit end surface is made; (5), the differential casing is accurately mounted onto the hydraulic inner hole expanding core lathe clamp, a hydraulic switch is turned on, and the differential casing is positioned and clamped; (6), a numerical control lathe processing button is started, and processing is performed according to the processing program of the step (4); and (7), after the processing program ends, the processing of differential casing bearing fit excircle, the differential casing bearing fit end surface, the driven gear fit excircle and the driven gear fit end surface is finished.

Technological method for processing differential casing and processing device

The invention discloses a mounting tool for a spring ring. The mounting tool comprises a guiding body and a pushing sleeve, wherein the guiding body has a shape of circular platform; the pushing sleeve is in clearance fit with the guiding body; an inner diameter of the pushing sleeve is slightly more than a maximum diameter of the guiding body and is less than an outer diameter of a mounted spring ring; a minimum diameter of the guiding body is less than an inner diameter of the mounted spring ring; the guiding body is a circular platform at a small conical degree; the maximum diameter of the guiding body is slightly more than the diameter of an axle of the mounted spring ring; a connecting threaded pillar is arranged on an end face of a maximum-diameter end of the guiding body; and the threaded pillar is coaxial with the guiding body. The mounting tool for the spring ring has a simple structure, is portable and conveniently used, is capable of flexibly moving and can be used for mounting the spring ring. Under the guidance of the guiding body, the spring ring is uniformly expanded, thereby avoiding a situation of serious local deformation of the spring ring caused by an unevenly pressed local part, ensuring the precision of the outer surface of the axle of the mounted spring ring, and improving the service life of the spring ring and assembling efficiency.

Mounting tool for spring ring

The invention relates to a kinetic parameter determination method of an extended tooth contact considered crack gear rotor system. The method comprises the following steps: obtaining a basic parameter of a healthy gear and a basic parameter and a crack parameter of a crack gear; establishing a gear meshing rigidity model, which comprises matrix rigidity, of the gear; calculating the matrix rigidity of a driving wheel of the gear and the matrix rigidity of a driven wheel of the gear by a finite element method; determining a gear matrix rigidity correction coefficient of the meshing rigidity model which comprises the matrix rigidity; determining the gear tooth deformation of the gear by a method that a gear transferring error is solved to obtain extended tooth contact considered gear time varying meshing rigidity; obtaining the basic parameters of a shaft and a bearing of a gear rotor system; obtaining a rigidity matrix K of the gear rotor system; and according to the rigidity matrix K of the gear rotor system, constructing an extended tooth contact considered rotor system vibration response analysis model, and determining a system vibration response result of the healthy gear and the crack gear.

Kinetic parameter determination method of extended tooth contact considered crack gear rotor system

The invention discloses a lathe clamp for clamping a synchronizer gear Both the left end part and the right end part of a pull rod are threaded sections, and the rest part is a cylindrical section; the right threaded section is connected with a nut; an expansion shaft is sleeved on the right part of the threaded section; the right part of the outer wall of the expansion shaft is provided with a conical expansion part; the left end part of the expansion shaft is fixedly connected with the right end part of a connecting disc; the right part of the connecting disc is sleeved on the left part of the cylindrical section of the pull rod; both an elastic sleeve and a positioning sleeve are sleeved outside the expansion shaft; the positioning sleeve is fixed to the right end of the connecting disc through a positioning washer; the left part of an inner hole of the elastic sleeve is matched with the conical expansion part of the right part of the expansion shaft, and an axial groove is formed in the left part of the elastic sleeve along the circumferential direction; the right part of the elastic sleeve extends into a circular groove in the left part of the nut; and the inner end of a stop screw is inserted into an annular groove in the outer wall of the right part of the elastic sleeve According to the lathe clamp, an inner splined hole of a gear blank is positioned through expansion of the right part of the elastic sleeve, and the right part of the elastic part more uniformly deforms in the circumferential direction, so that the clamping accuracy can be improved

Lathe clamp for clamping synchronizer gear

Spring band installation fixture

The utility model provides a holeless SPN assembling tool which is formed by a push tube and a guiding element; the guiding element is conical; one end of the guiding element with larger diameter is provided with a nip; and the push tube is separated from the guiding element. The assembling tool is formed by the guiding element and the push tube; the guiding element is designed into conical; one end of the guiding element with larger diameter is provided with the nip; the nip is a structure like a spindle nose; and the inner diameter of the push tube is a little larger than the maximum diameter of the guiding element. When the assembling tool is used, the installation angle is accurate and the installation speed is high.

Holeless SPN assembling tool

The utility model provides a tire bulging fixture, which is formed from connecting a bulging tire and a positioning seat on a bulging tire core, connecting the bulging tire core on a flange and connecting the flange on a lathe, a bulging tire pull rod is traversed through the center of the bulging tire core and is fixed with a driving pull rod, the bulging tire is matched with the bulging tire core in coning, positioning pieces are connected on the periphery of the bulging tire core, and the positioning pieces are positioned and fixed by a positioning seat which is connected on the flange. During the work, when the bulging tire pull rod and the bulging tire core are together acted on the bulging tire, since the bulging tire is matched with the bulging tire core in coning, thereby a great expansion force can be generated, and a work piece can be tightly fixed, the positioning of the work piece is accurate, and the requirements of high-accuracy and high-quality can be realized.

Expanding tyre tube jigs

The utility model provides a forklift built-in side roller which consists of a spindle head, a bracket, a side roller and a small shaft. The spindle head is hollow and a side roller bracket is arranged in the spindle head. The side roller is supported on the side roller bracket by the small shaft. The side roller is arranged in the spindle head, as a result, the distance between two corresponding pairs of roller is increased, the stress on a bearing is reduced and the service life of a gantry is improved.

A forklift built-in side roller

The utility model provides a holeless RPN assembling tool which is formed by a guiding element and a push rod which are separated; the guiding element is provided with an inner cavity; and the diameter of the push rod is a little smaller than the minimum diameter of the inner cavity of the guiding element In the holeless RPN assembling tool, the guiding element is provided with the inverted splayed inner cavity, and the diameter of the push rod is a little smaller than the minimum diameter of the inner cavity of the guiding element; during use, the RPN is directly put into the inner cavity, and external force actions on the push rod, so as to directly knock the RPN into a slot The structure is simple and practical, and can effectively solve the installation problem of the holeless RPN

Chen Yuhua

Papers

Holeless SPN assembling tool

Expanding tyre tube jigs

A forklift built-in side roller

Holeless RPN assembling tool

Combined bearing for forklift truck