Showing papers on "Gear shaping published in 2006"

Inverse conical forming mould for automobile gearbox gear combining tooth

Abstract: The inverse cone forming mold for combining tooth of automobile gearbox gear belongs to the field of pressurized metal machining mold technology. The combined tooth mold is set inside the ring pressure sleeve through conic surface fitting of obliquity 8-14 deg. The tooth mold is divided into tooth blocks with axial tooth possessing inclined side along the circumferential direction. There are tensional springs in the outer wall of the tooth mold, limiting ring in the outer wall repositioning spring and regulating pad below the pressure sleeve. The present invention is used in the finish forging of inverse cone for combining tooth of automobile gearbox gear, has simple structure, convenient operation and regulation, low machining cost, high precision and high product quality, and is superior to traditional gear shaping apparatus and available extrusion mold.

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.

Gearwheel which is modified in the tooth direction, and method and device for producing the same

Abstract: The invention relates to a method for producing or machining a gearwheel by means of a gear shaping process using a gearwheel-shaped tool, the gear shaping being carried out by means of a reciprocating cutting movement of the tool and/or workpiece in combination with an opposing rotational movement of the tool and workpiece, and a feed motion in the radial direction of the tool. In order to make it possible to generate any desired tooth trace corrections without weakening the tooth root, it is proposed according to the invention that an additional rotary movement for generating a tooth trace correction is superposed on the relative rotational movement between the tool and the workpiece. The invention also proposes a device for carrying out the method and a gearwheel which is produced in this way.

Adjustable gear shaper

Abstract: FIELD: machine engineering, manufacture of gear shaping tools. ^ SUBSTANCE: gear shaper with restored thickness of tooth includes two parts coaxially mounted with possibility of rotation. Two sectional washers with inner diameter equal to mounting diameter of parts are coaxially arranged between said parts. Said washers are stuck to new non-worn portions at matching axes of teeth. One washer has locking eccentric pin with dial rolled-in to it with possibility of rotation; it enters radial groove of other washer. Said pin is designed for relative rotation of parts after each regrinding by angle set with use of dial and determined according to given formula. ^ EFFECT: enhanced stability of parameters of profiles of shaped gear wheels, improved accuracy of mounting gear shaper, increased strength and useful life period of it due to separate cutting and gradual adjusting of mutual rotation angle of gear shaper parts. ^ 7 dwg

Gear shaping method

Abstract: FIELD: working processes in machine engineering, manufacture of gear wheels. ^ SUBSTANCE: method is realized with use of rolling around process reproducing engagement of gear wheel pair. One member of said pair (worked gear wheel) is imparted to rotation. Other member (round built-up gear shaper) having grooves in which cutting teeth secured in axial direction by means of pressure ring are mounted is imparted to rotation and reciprocation motion. In order to enhance efficiency of working and to stabilize parameters of shaped gear wheels, in body of gear shaper radial grooves with mutually parallel lateral sides are formed. Teeth are secured to bottom of groove by means of screws arranged in axial grooves of body. Gear shaper is provided with retainer whose surfaces inclined relative to lengthwise axis engage with reciprocal inclined surfaces of teeth. Gear shaper is also provided with nut-tie rod screwed into its central opening and holding retainer with the aid of washer secured to nut-tie rod by means of screws. Before shaping after each regrinding of gear shaper, its teeth are adjusted due to aligning them according to initial diameter of teeth apexes. Then mounting screws are released, nut is screwed in body of gear shaper for drawing teeth apart in radial direction and mounting screws are tightened. ^ EFFECT: enhanced efficiency of working, stable parameters of shaped gear wheels. ^ 2 cl, 8 dwg

Rolling rail and cutter box in sector gear gear shapping machine

Abstract: The utility model discloses a rolling rail and a cutter box in a sector-gear shaping machine, which belongs to a special device for processing automobile steering devices in a gear shaping machine. The utility model mainly comprises a curved rail which adopts a V-shaped rolling rail, a rail block is arranged in the rail and is connected with the cutter box in which a gear shaping cutter is arranged, and the gear shaping cutter is positioned through a left positioning block, a right positioning block and a back positioning block and is clamped by a clamping device composed of a left wedge block and a right wedge block; the left wedge block is connected with a left rotary screw rod, and a right rotary screw rod is connected to the right wedge block. Due to adopting the double-V-shaped rolling rail to replace the traditional circular cutter shaft device and using rolling friction to replace sliding friction, the utility model enhances cutting speed; the cutter box is directly connected to the lower part of the rolling rail block; as long as the screw rods are rotated, the utility model can realize clamping and loosening actions, and enhances the production efficiency.

Gear section cutter

Abstract: A gear shaping tool for machining a black gear with at least one tooth is composed of a main axle with the first and the second end faces, and a cutting part extended axially from the first end face and having a cutting surface, a surrounding surface and a front end face connected between said cutting surface and surrounding surface. Said cutting surface has front and back edges, a cutting edge and a side edge.

Investigation of mathematical model for machining of externally meshed noncircular gears and characteristics of their undercut

Abstract: A mathematical model for gear shaping was presented for machining of externally meshed noncircular gears with shaping procedure in terms of the positional relationship between the tool(cutter) and gear's pitch curve.On the basis of selecting such assignment range of gear module and eccentricity that there would be no undercut for shaping the teeth of noncircular gears,dynamically graphic simulation of the shaping process was conducted on the computer by using the mathematical model developed.According to the simulation result,the characteristics of tooth profile such as undercut and convexity of pitch curve of the machined gears could be analyzed and judged,so that a sort of intuitive judgment method was provided for designing and manufacturing of externally meshed noncircular gears with closed pitch curve.