CN214684597U

CN214684597U - Gear hobbing positioning tool for duplicate gear shaft

Info

Publication number: CN214684597U
Application number: CN202120711449.4U
Authority: CN
Inventors: 蔺诗祥
Original assignee: Luzhou Gaoxin Zhonghan Transmission Turning System Co ltd
Current assignee: Luzhou Gaoxin Zhonghan Transmission Turning System Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-12
Anticipated expiration: 2031-04-08

Abstract

A double gear shaft hobbing positioning tool relates to the technical field of double gear shaft positioning, and the adopted technical scheme comprises a clamp and a gear tooth positioning device, wherein the gear tooth positioning device comprises a support, the support is connected with a sliding rod in a sliding manner, an extension rod is arranged at one end of the sliding rod, a clamping and locking piece is arranged at the tail end of the extension rod, the clamping and locking piece is positioned on a central line of the double gear, which is parallel to the sliding direction of the sliding rod, and is provided with a clamping and locking groove for clamping one gear tooth of the double gear; the sliding rod is further provided with a fixed rod, the fixed rod is in threaded connection with a lead screw, the lead screw is rotatably connected with the support, and the lead screw is provided with a limiting part and an adjusting nut. The utility model discloses a teeth of a cogwheel positioner is with a teeth of a cogwheel chucking, as the reference surface of another gear machining is confirmed in the location, and tool setting processing is again to two teeth of a cogwheel positions relatively fixed that need align on making two gears, reach the symmetry requirement of product drawing.

Description

Gear hobbing positioning tool for duplicate gear shaft

Technical Field

The utility model relates to a duplex gear axle location technical field especially relates to a duplex gear axle hobbing location frock.

Background

The duplicate gear shaft is a gear shaft product with a duplicate gear structure and comprises a duplicate gear 3 and a hollow shaft 4, when the duplicate gear shaft is subjected to gear hobbing processing, gear hobbing operations of two gears are all independently performed, and the teeth of the two gears are required to be aligned with the teeth of the two gears. At present, a knife edge clamp is adopted to clamp in a pressing mode during gear hobbing, but the knife edge clamp does not have a tooth fixing mechanism, the circumferential position of gear machining is not fixed, the force-bearing rigidity of the knife edge clamp is poor, and the machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

To knife-edge anchor clamps among the prior art scheme not to the problem of tooth fixed establishment, the utility model provides a duplicate gear axle hobbing location frock.

The utility model provides a following technical scheme: a double gear shaft hobbing positioning tool comprises a clamp and a gear tooth positioning device, wherein the clamp is used for clamping a double gear shaft, the gear tooth positioning device comprises a support arranged on the clamp, the support is connected with a sliding rod which slides along the radial direction of the double gear in a sliding manner, an extension rod is arranged at one end of the sliding rod, a clamping and locking piece is arranged at the tail end of the extension rod, the clamping and locking piece is positioned on a central line of the double gear, which is parallel to the sliding direction of the sliding rod, and a clamping and locking groove for clamping one gear tooth of the double gear is formed in the clamping and locking piece; the sliding rod is further provided with a fixed rod, the fixed rod is in threaded connection with a lead screw, the lead screw is rotatably connected with the support, and the lead screw is provided with a limiting part and an adjusting nut.

Preferably, the latch groove is a wedge-shaped groove.

Preferably, the clamp comprises a coaxial outer shell and an expansion sleeve, and the bracket is fixedly connected to the outer wall of the outer shell; the shell is provided with a mounting groove, an opening of the mounting groove is provided with a conical locking groove with a large outer part and a small inner part, and the bottom of the mounting groove is provided with a plurality of through holes; one end of the expansion sleeve is provided with a locking part which is in clearance fit with the conical locking groove, and the other end of the expansion sleeve is provided with a plurality of connecting pieces; the connecting piece is in clearance fit with the through hole and is connected with a pull handle; one end of the locking part, which is far away from the connecting piece, is provided with a positioning groove and a plurality of expansion joints which are uniformly distributed around the axis in the locking part.

Preferably, the mounting groove bottom still is provided with the edge expand the centering piece that overlaps the axial direction extension, the centering piece orientation the open-ended one end of mounting groove is pointed end outwards's taper, expand the cover with centering piece sliding connection.

Preferably, a pulling sleeve is further arranged between the connecting pieces and the expansion sleeve, and the pulling sleeve is in threaded connection with the expansion sleeve and the connecting pieces respectively.

The utility model has the advantages that: the clamp is additionally provided with the gear tooth positioning device, the clamp is utilized to clamp a workpiece, after one gear is subjected to gear hobbing, one gear tooth is clamped by the gear tooth positioning device and used as a reference surface for positioning and determining the machining of the other gear, and then the tool setting is carried out, so that the positions of two gear teeth to be aligned on the two gears are relatively fixed, and the requirement on the symmetry degree of a product drawing is met; the hydraulic system is used for tensioning the expansion sleeve and clamping the excircle of the hollow shaft of the workpiece, so that the rigidity strength of stress during machining is better, and the machining efficiency of the machine tool can be improved.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a side view of an embodiment of the present invention.

Fig. 3 is a top view of an embodiment of the present invention.

Fig. 4 is a schematic view of an embodiment of the middle wheel tooth positioning device of the present invention.

Fig. 5 is a cross-sectional view of an embodiment of the clamp of the present invention.

Reference numerals: 1-clamp, 11-shell, 111-mounting groove, 112-conical locking groove, 113-through hole, 12-expansion sleeve, 121-locking part, 122-connecting piece, 123-pull handle, 124-positioning groove, 125-expansion joint, 13-centering piece, 14-pull sleeve, 2-gear tooth positioning device, 21-bracket, 22-sliding rod, 23-extension rod, 24-locking piece, 25-locking groove, 26-fixing rod, 27-screw rod, 271-limiting piece, 272-adjusting nut, 3-duplicate gear and 4-hollow shaft.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a duplicate gear shaft hobbing positioning tool shown in figures 1-5, including the anchor clamps 1 that are used for clamping the duplicate gear shaft, still include teeth of a cogwheel positioner 2, teeth of a cogwheel positioner 2 is including setting up support 21 on anchor clamps 1, support 21 sliding connection has along the gliding slide bar 22 of duplicate gear radial direction, the one end of slide bar 22 is provided with extension rod 23, the end of extension rod 23 is provided with latch fitting 24, latch fitting 24 is located duplicate gear 3 and the parallel central line of slide bar 22 slip direction and is provided with the latch groove 25 that is used for blocking a teeth of a cogwheel of duplicate gear 3; the sliding rod 22 is further provided with a fixing rod 26, the fixing rod 26 is connected with a screw rod 27 in a threaded manner, the screw rod 27 is rotatably connected with the bracket 21, and the screw rod 27 is provided with a limiting piece 271 and an adjusting nut 272.

The gear tooth positioning device is used for being matched with the clamp, after the clamp clamps the duplicate gear shaft workpiece, one gear tooth is clamped by the gear tooth positioning device, and then the tool setting is carried out, so that two gear tooth positions which need to be aligned on the two gears are relatively fixed, and the requirement on the symmetry degree of a product drawing is met.

The bracket is used for fixing the gear tooth positioning device on the clamp and is connected with the sliding rod in a sliding mode. Specifically, the bracket can be fixedly connected to the outer wall of the clamp through bolts; a through groove is formed in the support, the sliding rod is in clearance fit with the through groove, and the through groove plays a role in guiding the sliding rod and preventing slipping. One end of the sliding rod is connected with a clamping and locking piece through an extension rod, and a clamping and locking groove is formed in the clamping and locking piece and used for clamping the gear teeth of one gear of the duplicate gears. The sliding rod slides along the radial direction of the dual gear, the clamping and locking piece is positioned on a central line parallel to the sliding direction of the dual gear and the sliding rod, and the clamping and locking piece can adapt to gears with different radiuses along with the sliding of the sliding rod.

The limiting part is used for preventing the screw rod from being separated from the support, plays a role of a handle and can be fixedly connected with the screw rod. As shown in fig. 4, the limiting member is rotated to drive the screw rod to rotate forward or backward, so that the distance between the fixing rod and the bracket can be adjusted, the locking member is adapted to workpieces with different sizes, and the locking member is tightly clamped with one gear tooth on the workpiece. Adjusting nut and lead screw threaded connection for fix the lead screw on the support, with behind the teeth of a cogwheel on the card latch fitting chucking work piece, screw up adjusting nut and support, the position of fixed card latch fitting. The number of the adjusting nuts is at least one.

The utility model discloses when using, the hobbing operation has been accomplished to one of them gear of duplicate gear, can be at first press from both sides the hollow shaft dress of work piece on anchor clamps, then rotatory locating part, adjusts the position of slide bar, block piece, with a teeth of a cogwheel chucking on block piece and the work piece, behind the chucking, recycle adjusting nut and fix the lead screw on the support, accomplish the location of work piece.

Preferably, the latch groove 25 is a wedge-shaped groove, and both side walls thereof are in contact with both side surfaces of the gear teeth, respectively, to fix the gear teeth.

Preferably, the clamp 1 comprises a coaxial outer shell 11 and an expansion sleeve 12, and the bracket 21 is fixedly connected to the outer wall of the outer shell 11; the housing 11 is provided with a mounting groove 111, an opening of the mounting groove 111 is provided with a tapered locking groove 112 with a large outside and a small inside, and the bottom of the mounting groove 111 is provided with a plurality of through holes 113; one end of the expansion sleeve 12 is provided with a locking part 121 which is in clearance fit with the conical locking groove 112, and the other end is provided with a plurality of connecting pieces 122; the connecting piece 122 is in clearance fit with the through hole 113 and is connected with a pull handle 123; one end of the locking part 121, which is far away from the connecting part 122, is provided with a positioning groove 124 and a plurality of expansion joints 125 which are uniformly distributed around the central axis of the locking part 121.

The shell and the expansion sleeve are coaxial, so that the stress of the shaft sleeve is more uniform. A plurality of through-holes of mounting groove bottom can play the preliminary positioning effect to the cover that expands, and a plurality of through-holes can surround the center pin evenly distributed of mounting groove in the bottom of mounting groove. One end of the locking part is divided into a plurality of petal-shaped structures by the plurality of expansion joints, and the petal-shaped structures can generate certain deformation under the action of pressure; a plurality of expansion joints evenly distributed makes the deformation more even. The connecting piece can adopt a bolt and is respectively in threaded connection with the pull handle and the expansion sleeve.

When the clamp is used, the shell of the clamp can be fixed firstly, the pull handle is connected to a hydraulic system, then the hollow shaft of the workpiece is sleeved in the positioning groove, the hydraulic system pulls the expansion sleeve through the pull handle, the conical outer wall of the locking portion is pressed on the conical locking groove, under the reaction force of the conical locking groove, the multiple petal-shaped structures generate uniform deformation and contract inwards, the petal-shaped structures are clamped on the outer circle of the hollow shaft, the hollow shaft is locked, and the rigidity strength of the stress of the workpiece and the clamp is better during processing.

Preferably, the bottom of the mounting groove 111 is further provided with a centering member 13 extending along the axial direction of the expansion sleeve 12, one end of the centering member 13 facing the opening of the mounting groove 111 is a conical body with an outward tip, and the expansion sleeve 12 is slidably connected with the centering member 13. When the centering piece is clamped, the hollow shaft of the workpiece can be sleeved on the conical body of the centering piece, so that the centering effect is achieved.

Preferably, a pulling sleeve 14 is further arranged between the plurality of connecting pieces 122 and the expansion sleeve 12, and the pulling sleeve 14 is in threaded connection with the expansion sleeve 12 and the plurality of connecting pieces 122 respectively. The pull sleeve makes the installation and the replacement of the expansion sleeve more convenient.

The foregoing is directed to one or more embodiments of the present invention, which are described in some detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a duplex gear shaft hobbing location frock, includes anchor clamps (1) that are used for clamping duplex gear shaft, its characterized in that: the clamp comprises a clamp body (1), and is characterized by further comprising a gear tooth positioning device (2), wherein the gear tooth positioning device (2) comprises a support (21) arranged on the clamp body (1), the support (21) is connected with a sliding rod (22) which slides along the radial direction of the duplicate gear in a sliding mode, one end of the sliding rod (22) is provided with an extension rod (23), the tail end of the extension rod (23) is provided with a clamping and locking piece (24), and the clamping and locking piece (24) is located on a central line of the duplicate gear, which is parallel to the sliding direction of the sliding rod (22), and is provided with a clamping and locking groove (25) for clamping one gear tooth of the duplicate gear;

the sliding rod (22) is further provided with a fixing rod (26), the fixing rod (26) is in threaded connection with a screw rod (27), the screw rod (27) is rotatably connected with the support (21), and a limiting part (271) and an adjusting nut (272) are arranged on the screw rod (27).

2. The double gear shaft hobbing positioning tool according to claim 1, characterized in that: the locking groove (25) is a wedge-shaped groove.

3. The double gear shaft hobbing positioning tool according to claim 1, characterized in that: the clamp (1) comprises a coaxial shell (11) and an expansion sleeve (12), and the bracket (21) is fixedly connected to the outer wall of the shell (11);

the shell (11) is provided with a mounting groove (111), an opening of the mounting groove (111) is provided with a conical locking groove (112) with a large outer part and a small inner part, and the bottom of the mounting groove (111) is provided with a plurality of through holes (113);

one end of the expansion sleeve (12) is provided with a locking part (121) which is in clearance fit with the conical locking groove (112), and the other end of the expansion sleeve is provided with a plurality of connecting pieces (122); the connecting piece (122) is in clearance fit with the through hole (113) and is connected with a pull handle (123); one end of the locking part (121) far away from the connecting piece (122) is provided with a positioning groove (124) and a plurality of expansion joints (125) which are uniformly distributed around the central axis of the locking part (121).

4. The hobbing positioning tool for the duplicate gear shaft according to claim 3, characterized in that: the bottom of the mounting groove (111) is further provided with a centering piece (13) extending along the axial direction of the expansion sleeve (12), the centering piece (13) faces towards the end, facing outwards, of the open end of the mounting groove (111), and the expansion sleeve (12) is connected with the centering piece (13) in a sliding mode.

5. The double gear shaft hobbing positioning tool according to claim 3 or 4, characterized in that: a pulling sleeve (14) is further arranged between the connecting pieces (122) and the expansion sleeve (12), and the pulling sleeve (14) is in threaded connection with the expansion sleeve (12) and the connecting pieces (122) respectively.