The invention relates to a device for processing a synchronizer cone nave. The device comprises a mandrel and a locating disc fixed to the mandrel, wherein the mandrel comprises a mandrel body, a mandrel ring, a mandrel neck and a mandrel head that are arranged from left to right sequentially; a locating gear is arranged on the mandrel neck; the mandrel head is connected with a pressing sleeve in a sleeving manner; a cavity slidingly matched with the mandrel head is formed in the pressing sleeve; an opening of the pressing sleeve faces to left; a second center hole is formed in the right end face of the pressing sleeve; the locating disc is fixed to the right end face of the mandrel ring; a groove with an opening facing to right is formed in the middle of the locating disc; the locating gear is positioned between the locating disc and the pressing sleeve; the addendum circle diameter of the locating gear is less than the diameter of a smallest inscribed circle of the groove, and is greater than the diameter of the opening of the cavity; and the cross section of a tooth of the locating gear is trapezoid. By using a tooth surface at a reference circle of an inner tooth ring of the synchronizer cone nave for locating, the coaxiality and pitch circle runout of an outer tooth, an inner tooth and a conical surface of the synchronizer cone nave are ensured, and the noise can be reduced after a gearbox assembly is mounted on the processed synchronizer cone nave.

Device for processing synchronizer cone nave

The invention relates to a fixture suitable for a synchronizer cone hub. The fixture comprises a mandrel and a positioning disc fixed on the mandrel, wherein the mandrel comprises a shaft body, a shaft collar, a shaft journal and a shaft head arranged from left to right in sequence; the shaft journal is provided with a positioning gear; a pressing sleeve sleeves and connects with the shaft head; the pressing sleeve is provided with a cavity opened to the left side and slidingly fitting the shaft head; a second center hole is formed in the right end surface of the pressing sleeve; the positioning disc is fixed on the right end surface of the shaft collar; a groove opened to the right side is formed in the middle part of the positioning disc; the positioning gear is positioned between the positioning disc and the pressing sleeve; the diameter of the addendum circle of the positioning gear is smaller than the diameter of the minimum incircle of the groove and greater than the opening diameter of the cavity; and the gear cross section of the positioning gear is trapezoidal. The fixture employs a gear surface at the reference circle of an inner gear ring of the synchronizer cone hub for positioning, so that the coaxiality and the pitch circle jump of outer and inner gears and a conical surface of the synchronizer cone hub are guaranteed; and after the machined synchronizer cone hub is assembled on a transmission assembly, the noise can be reduced.

Fixture suitable for synchronizer cone hub

The invention relates to a device suitable for a synchronizer cone hub. The device comprises a mandrel and a positioning disc fixed on the mandrel, wherein the mandrel comprises a shaft body, a shaft ring, a shaft neck and a shaft head arranged from left to right in sequence; the shaft neck is provided with a positioning gear; the shaft head is coated with a pressing sleeve; the pressing sleeve is provided with a cavity opened to the left side and slidingly fitting the shaft head; a second center hole is formed in the right end surface of the pressing sleeve; the positioning disc is fixed on the right end surface of the shaft ring; a groove opened to the right side is formed in the middle part of the positioning disc; the positioning gear is positioned between the positioning disc and the pressing sleeve; the gear top circle diameter of the positioning gear is smaller than the minimum incircle diameter of the groove and bigger than the opening diameter of the cavity; and the gear cross section of the positioning gear is trapezoidal. The device applies a gear surface in an inner gear ring reference circle of the synchronizer cone hub to position, so that the coaxiality and the pitch circle jump of outer and inner gears and a conical surface of the synchronizer cone hub are guaranteed; and after the machined synchronizer cone hub is provided with a transmission assembly, the noise can be reduced.

Device suitable for synchronizer cone hub

The invention relates to a tool for positioning a synchronizer cone nave. The tool comprises a core shaft and a positioning disc fixed to the core shaft. The core shaft comprises a shaft body, a shaft ring, a shaft neck and a shaft head which are sequentially arranged from left to right. A positioning gear is arranged on the shaft neck. The shaft head is sleeved with a compression sleeve. The compression sleeve is provided with a cavity in sliding fit with the shaft head, and an opening of the cavity faces left; a second central hole is formed in the right end face of the compression sleeve. The positioning disc is fixed to the right end face of the shaft ring. A groove is formed in the middle of the positioning disc, and an opening of the groove faces right. The positioning gear is located between the positioning disc and the compression sleeve. The tip diameter of the positioning gear is smaller than the diameter of the minimum inscribed circle of the groove and larger than the diameter of the opening of the cavity. The cross section of each tooth of the positioning gear is trapezoidal. According to the tool for positioning the synchronizer cone nave, positioning is carried out by means of a tooth surface at a reference circle of an inner gear ring of the synchronizer cone nave, coaxiality and reference pitch circle runout of the outer teeth, the inner teeth and the cone surface of the synchronizer cone nave are guaranteed, and noise can be lowered after the machined synchronizer cone nave is assembled on a gearbox assembly.

Tool for positioning synchronizer cone nave

The invention relates to a synchronizer cone hub positioning tool. The tool comprises a mandrel and a positioning disc fixed on the mandrel, wherein the mandrel comprises a shaft body, a shaft ring, a shaft neck and a shaft head arranged from left to right in sequence; the shaft neck is provided with a positioning gear; the shaft head is coated with a pressing sleeve; the pressing sleeve is provided with a cavity opened to the left side and slidingly fitting the shaft head; a second center hole is formed in the right end surface of the pressing sleeve; the positioning disc is fixed on the right end surface of the shaft ring; a groove opened to the right side is formed in the middle part of the positioning disc; the positioning gear is positioned between the positioning disc and the pressing sleeve; the gear top circle diameter of the positioning gear is smaller than the minimum incircle diameter of the groove and bigger than the opening diameter of the cavity; and the gear cross section of the positioning gear is trapezoidal. The tool applies a gear surface in an inner gear ring reference circle of a synchronizer cone hub to position, so that the coaxiality and the pitch circle jump of outer and inner gears and a conical surface of the synchronizer cone hub are guaranteed; and after the machined synchronizer cone hub is provided with a transmission assembly, the noise can be reduced.

Synchronizer cone hub positioning tool

The invention discloses a gear shaping and expanding fixture which comprises a screw rod, a taper shaft screwed with the lower part of the screw rod and an expansion sleeve arranged on the outer side of the taper shaft in a sleeving manner, wherein a to-be-processed outer gear ring is arranged on the outer side of the expansion sleeve in a sleeving manner; and the expansion sleeve is formed by fixedly connecting an expansion sleeve body and an expansion sleeve base, the expansion sleeve body comprises 2-6 expansion ribs which are fixedly connected with the expansion sleeve base, are coaxial and have the same diameter, and an inner ring surface of the expansion sleeve is in wedged matching with an outer cylindrical surface of the taper shaft According to the gear shaping and expanding fixture, through the wedged matching between the taper shaft and the expansion sleeve, the expansion sleeve expands and loosens the to-be-processed outer gear ring when the taper shaft moves up and down, that is, the zero clearance fit between the to-be-processed outer gear ring and the gear shaping fixture is guaranteed, the end surface of the to-be-processed outer gear ring is pressed tightly, the influence of clearance and end surface run-out on the product quality is eliminated, accordingly, a workpiece is convenient to load and unload, the gear shaping fixture is convenient to replace, the stability of the product quality and the qualified rate are improved, and the auxiliary time is shortened

Song Senlin

Papers

Gear shaping and expanding fixture