Gear shaping

About: Gear shaping is a research topic. Over the lifetime, 598 publications have been published within this topic receiving 1880 citations.

Process used for machining inner gear ring with large module and deep tooth space

Abstract: The invention discloses a process used for machining an inner gear ring with large module and deep tooth space, which comprises the steps of forging, normalizing, rough turning, finish turning, gear shaping and gear broaching. For forging, 20CrMnTi material is chosen, an excircle with 4mm of thickness is added, an inner diameter is decreased by 4mm, and the total height is increased by 4mm on the basis of a finished product dimension to form a forging dimension; for normalizing, a gear ring is placed at high temperature for heat preservation for a time period and then drawn from a furnace for air cooling; for rough turning, oxide scale and most of allowances are removed for the air-cooled gear ring, and 0.5mm allowance is left at each side; for finish turning, the thickness of the excircle and the total height of the gear ring after rough turning is processed to the desired dimension through finish turning, and the inner hole has 0.2mm allowance left; for gear shaping, gear shaping is carried out to the inner gear ring of the gear ring after finish turning, and an inter-rod distance dimension is shaped to be 0.4 mm less than that of a finished product; and for gear broaching, finally a tooth shape and the small diameter of the inner gear ring are broached to the finished product dimension to obtain the finished product of the inner gear ring. The process of the invention can effectively improve the gear shape precision and the consistency of gear ring dimensions, and reduce the internal stress of the gear ring.

Universal helical gear shaping machine

Abstract: The utility model discloses a novel universal helical gear shaping machine without tooth direction errors and frequent replacement of a helical section and a guide sleeve, wherein a spiral angle for inserting a helical tooth can be optionally adjusted. The machine is mainly composed of a work table assembly, a main shaft and a power assembly. The power assembly is respectively connected with the work table assembly and the main shaft through corresponding transmission components. The utility model is characterized in that the lower end of the main shaft us provided with a lower eccentric slide block mechanism which is used for controlling the up and down motion of the main shaft. The lower eccentric slide block mechanism is connected with a lower transmission shaft which is connected with the power assembly through the corresponding transmission components. The upper end of the main shaft is provided with the helical section. The helical section is sheathed in a helical guide block which is fixed on a machine frame. The upper part of the helical section of the main shaft is provided with an upper eccentric slide block mechanism which is used for controlling the up and down motion of the main shaft. The upper eccentric slide block is connected with the upper transmission shaft which is connected with the power assembly through the corresponding transmission components. A worm gear and worm rod mechanism is arranged between the upper transmission shaft and the lower transmission shaft for adjusting the eccentricity of the corresponding slide blocks in the upper eccentric slide block mechanism and the lower eccentric slide block mechanism.

Gear clamping tool for gear shaping

Abstract: The invention discloses a gear clamping tool for gear shaping. The gear clamping tool comprises a machine frame, a rotating shaft rotationally connected with the machine frame, and a workbench fixed to the rotating shaft. The workbench is provided with a fixing block for locking the workbench. The gear clamping tool further comprises a threaded fluted disc rotationally connected with the workbench and multiple clamping units. Each clamping unit comprises a check block, a rack block, a pressing block, a positioning column perpendicular and fixed to the workbench, and a nut for fixing the pressing block, wherein the upper end face o the check block is parallel to the face of the workbench, both the rack block and the check block are fixed to the positioning column, the pressing block and the positioning column are in sliding connection in the axial direction, and the nut is in threaded connection with the upper end of the positioning column. The workbench is provided with sliding grooves which are evenly distributed in the radial direction with the circle center of the threaded fluted disc as the center. The number of the sliding grooves corresponds to that of the clamping units. The lower portions of the rack blocks are in sliding connection with the sliding grooves. The upper ends of the rack blocks are engaged with the lower end of the threaded fluted disc. The threaded fluted disc is provided with a fixing pin for limiting rotation of the threaded fluted disc. Compared with the prior art, the gear clamping tool is easy, convenient and fast to operate, capable of clamping gear blanks with different diameters, and fast in clamping process.

Expander chucking arrangement for machining gears

Abstract: The utility model relates to a tyre expansion clamp for processing gears, comprising a tyre master shaft, a tyre body, a tyre core, a bottom pad, an upper pad, an adjusting pad, nuts, etc., wherein, one end of the tyre master shaft is provided with the tyre body for installing and matching with the working table of a machine tool, and the other end of the tyre master shaft is provided with a tyre master. The inner hole of the tyre master is a taper hole, and the hole wall of the taper hole is provided with opening forward grooves in the axis direction of the tyre master. The tyre body is a cone body which is connected with the tyre core for penetrating into the tyre master to form an expanding state, so that gear blank sheathed on the tyre master is expanded and clamped tightly. The tyre expansion clamp applied to the mechanical processes of gear shaping, gear hobbing, etc. can eliminate assembly error and increase the processing accuracy of gears and the rate of finished products.

Helical tooth pre-shaving tip relief pinion cutter

Abstract: The utility model relates to a helical tooth pre-shaving tip relief pinion cutter comprising an inner hole. A plurality of cutting teeth are distributed on the radial direction of the inner hole, a scrape-containing groove is arranged between the cutting teeth; the cutting edge of each cutting tooth consists of a cutter tooth side surface, a cutter tooth front edge surface and a cutter tooth top edge surface; the cutter teeth side surface consists of a tooth top bulge part, a tooth root tip relief part and an involute tooth surface. In the helical tooth pre-shaving tip relief pinion cutter, the normal front angle of the cutter tooth is 5 degrees, and the top rear angle of the cutter tooth is 6 degrees. The helical tooth pre-shaving tip relief pinion cutter is suitable for processing a gear by coarse gear shaping and precise gear shaping, and simultaneously can process gear tooth root and gear top chamfer, and the processing time of the gear can be saved, the tools used for processing gear are reduced, the processing cost of the gear is lowered, and the processing precision of the gear is improved.