JPH0611713Y2 - Finishing device for helical gears - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a finishing device for a helical gear.

"Prior Art" Conventionally, as a gear finishing machine, for example, JP-A-62-9
In the device of this publication, a shaving cutter is rotatably driven with respect to a gear to be processed, and a phrasing cutter is movably arranged with respect to a gear to be processed. There is.

When performing the deburring process and the shaving process at the same time, the phrasing cutter is pressed against the gear to be processed so that the shaving cutter rotationally drives the phrasing cutter via the gear to be processed. As a result, the deburring process of the gear to be processed by the shaving cutter and the phrasing process of the gear to be processed by the phrasing cutter are simultaneously performed.

[Problems to be solved by the invention] In gear machining, it is desirable that the phrasing cutter be rotated at a low speed and the shaving cutter be rotated at a high speed. However, in the apparatus of the above publication, the phrasing cutter is driven to rotate by the shaving cutter via the gear to be processed, so that both cutters are driven to rotate at the same number of revolutions. The rotation speed cannot be changed with respect to the rotation speed of the shaving cutter.

The object of the present invention is to improve the machining accuracy of the chamfering processing and the shaving processing by the framing cutter by changing the number of revolutions of the phasing cutter and the shaving cutter. To provide a finishing device for a helical gear, which is capable of satisfactorily shifting the cutter mesh into a state in which the shaving cutter meshes with a workpiece, enabling continuous machining, and further achieving a reduction in equipment cost. is there.

"Means for Solving the Problem" The present invention relates to a work shaft having a work, and a phrasing cutter shaft having a phrasing cutter arranged on one side of the work shaft for performing a phrasing process on the work shaft, The shaving cutter shaft having a shaving cutter disposed on the opposite side of the phrasing cutter shaft for shaving the work, and the phasing cutter shaft and the shaving cutter shaft are rotatably supported, and the phrasing cutter meshes with the work and A moving body that moves the phrasing cutter shaft and the shaving cutter shaft relative to the work shaft so that the shaving cutter separates from the work, or the framing cutter separates from the work and the shaving cutter meshes with the work. Simple single A rotary drive means; and a synchronizing means for simultaneously transmitting the rotation from the rotary drive means to the phrasing cutter shaft and the shaving cutter shaft, wherein the moving body moves the phrasing cutter shaft and the shaving cutter shaft with respect to the work shaft. During the operation, the phrasing cutter of the phrasing cutter shaft and the shaving cutter of the shaving cutter shaft are both configured to mesh with the work of the work shaft.

[Operation] In the present invention, when chamfering a work by the phrasing cutter, the moving body moves the phrasing cutter shaft and the shaving cutter shaft with respect to the work shaft so that the phrasing cutter meshes with the work and the shaving cutter separates from the work. In addition, the rotation drive means performs low speed rotation. As a result, the work is chamfered at low speed by the phrasing cutter.

Further, at the time of shaving processing of the work by the shaving cutter, the moving body moves the phrasing cutter shaft and the shaving cutter shaft with respect to the work shaft so that the phrasing cutter separates from the work and the shaving cutter meshes with the work, and, The rotation driving means performs high speed rotation. As a result, the work is shaving processed at high speed by the shaving cutter.

While the moving body is moving the phrasing cutter shaft and the shaving cutter shaft with respect to the work shaft, the phrasing cutter of the phrasing cutter shaft and the shaving cutter of the shaving cutter shaft both mesh with the work of the work shaft. With such a configuration, the cutter is favorably moved from the state in which the phrasing cutter is in mesh with the work to the state in which the shaving cutter is in mesh with the work, enabling continuous machining.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a helical gear finishing apparatus according to an embodiment of the present invention.

In FIG. 1, reference numeral 10 indicates a base, and shafts 16 and 18 are formed on frames 12 and 14 standing upright from the base 10 so as to face each other. A work shaft 20 is supported by the shafts 16 and 18, and the work shaft 20 has a work 22. Work axis 2
The support portion of the shafts 16 and 18 for 0 can have, for example, a well-known center structure.
One of the elements 8 moves in the axial direction by a mechanism (not shown).

A movable body 24 is arranged on the frame 14 so as to be vertically movable, that is, the movable body 24 has a sliding portion 2
6 is movable along the guide rail 28 of the frame 14. A motor 32 is provided in the recess 30 of the base 10, and a ball screw 34 is drivingly coupled to the motor 32, and the ball screw 34 is coupled to the moving body 24.

Therefore, when the ball screw 34 is actuated by the driving of the motor 32, the sliding portion 26 of the moving body 24 moves along the guide rail 28 and moves vertically with respect to the frame 14.

The moving body 24 is composed of an upper body 36 and a lower body 38. Further, the lower body 38 pivotally supports a phrasing cutter shaft 40 arranged below the work shaft 20 by means of shaft support portions 41, 41, and the phrasing cutter shaft 40 has a phrasing cutter 42. .

Further, in the recess 44 of the upper body 36, the rotary body 46 is
It is rotatably provided. Then, in the upper body 36, gears, 50, 52, 54, 5 are arranged so as to mesh with each other.
6 is rotatably supported, and gears 58, 60, 62 are rotatably supported in the rotating body 46 so as to mesh with each other.
The gear 56 in 6 is coaxial with the gear 58 in the rotating body 64.
Is. The gear 62 in the rotating body 46 is coupled to a shaving cutter shaft 66, and the shaving cutter shaft 66
Are rotatably supported by the rotatably supporting portions 68, 68. The shaving cutter shaft 66 has a shaving cutter 70, and is arranged above the work shaft 20.

When the gear 50 in the upper body 36 rotates, the gear 5
The shaving cutter shaft 66 rotates via 2, 54, 56, 58, 60, and 62.

With the above structure, the motor 30 is driven to operate the ball screw 32 to move the moving body 24 in the vertical direction with respect to the frame 14, and the phrasing cutter shaft 40 and the shaving cutter shaft 66 to the work shaft 20.
Can be moved relative to. As a result, the phrasing cutter 42 can be engaged with the work 22 and the shaving cutter 70 can be separated from the work 22, or the phrasing cutter 42 can be separated from the work 22.
And the shaving cutter 70 can be engaged with the work 22.

While the moving body 24 is moving the phrasing cutter shaft 40 and the shaving cutter shaft 66 with respect to the work shaft 20, both the phrasing cutter 42 of the phrasing cutter shaft 40 and the shaving cutter 70 of the shaving cutter shaft 66 are It is set so as to mesh with the work 22 of the work shaft 20.

Next, in the base 10, the drive shaft 73 of the motor 72 is drivingly connected to the speed change gear box 74, and the pulley 78 is connected to the output shaft 76 of the speed change gear box 74. On the other hand, a timing gear box 80 is arranged in the base 10, a pulley 84 is coupled to an input shaft 82 of the timing gear box 80, and the pulley 84 and a pulley of an output shaft 76 of the speed change gear box 74 are connected. A V-belt 86 is stretched over 78. The speed-changing gear box 74 receives a constant drive of the motor 72 and switches the output to rotate the output shaft 76 at a low speed or a high speed.

In the timing gear box 80, the input shaft 82
Gears 96 and 98 of the output shafts 92 and 94 are meshed with the gear 88 of the. The output shaft 92 is drivingly coupled to the phrasing cutter shaft 40 via the universal joint portion 100, the shaft 102, and the universal joint portion 104. The output shaft 94 is
The universal joint 106, the shaft 108, and the universal joint 110 are drivingly coupled to the shaft 112 of the gear 50.

Therefore, when the motor 72 is driven, the shafts 102 and 108 are rotated via the speed change gear box 74, the V-belt 86, and the timing gear box 80, which causes the phrasing cutter shaft 40 and the shaving cutter shaft 66 to rotate. Will be made.

In the above configuration, during chamfering of the work 22 by the phrasing cutter 42, the moving body 24 includes the phrasing cutter shaft 40 and the shaving cutter shaft 40 so that the phrasing cutter 42 meshes with the work 22 and the shaving cutter 70 separates from the work 22. 66 is moved with respect to the work shaft 20 so that the phrasing cutter 42 meshes with the work 22, and the speed change gear box 74 is rotated at a low speed. As a result, the work 22 is chamfered at a low speed by the phrasing cutter 42.

Further, when the work 22 is shaving processed by the shaving cutter 70, the moving body 24 has the phrasing cutter 42 separated from the work 22 and the shaving cutter 7
The phrasing cutter shaft 40 and the shaving cutter shaft 66 are moved with respect to the work shaft 20 so that 0 meshes with the work 22, and the shaving cutter 70 moves the work 22.
The gearbox 74 for shifting.
Rotate at a high speed by switching. As a result, the work 22 is shaving processed at high speed by the shaving cutter 70.

As described above, the moving body 24 moves the phrasing cutter shaft 40 and the shaving cutter shaft 66 to the work shaft 20.
While moving with respect to the workpiece shaft 20, the phrasing cutter 42 of the phrasing cutter shaft 40 and the shaving cutter 70 of the shaving cutter shaft 66 both move.
It is set so as to mesh with the work 22. Less than,
The process at this time will be described with reference to FIGS.

In FIG. 2, the work 22 is chamfered by the phrasing cutter 42. At this time, the phrasing cutter 42 is engaged with the work 22 with a pressing force by the upward movement of the moving body 24. However, the shaving cutter 70 does not mesh with the work 22. The phrasing cutter shaft 40 and the shaving cutter shaft 66 both rotate at a low speed.

In FIG. 3, by moving the moving body 24 downward,
The state in which the framing cutter 42 is separated from the work 22 and the shaving cutter 70 is in mesh with the work 22 is shown. At this time, the phrasing cutter 4
2 meshes with the work 22 through a large backlash, and the shaving cutter 70 works with the work 22.
It meshes with a large backlash.

In FIG. 4, the phrasing cutter 42 is separated from the work 22 and the shaving cutter 70 is pressed against the work 22 by the completion of the further downward movement of the moving body 24. At this time, the phrasing cutter 42 is
The shaving cutter 70 does not mesh with the work 22.
Engages with the work 22 without backlash.

Therefore, the shaving cutter 70 shaving the work 22. During the shaving process, the phrasing cutter shaft 40 and the shaving cutter shaft 66 are attached to the speed change gear box 74.
Both of them are adapted to rotate at high speed.

When the shaving process is completed, the moving body 24 stops at the intermediate position of the vertical movement (the state shown in FIG. 3), and the work 22
One of the shafts 16 and 18 for supporting the machine is moved by an unillustrated advancing / retreating mechanism to exchange the machined work with the unmachined work.

As described above, the moving body 24 moves the phrasing cutter shaft 40.
While the shaving cutter shaft 66 is being moved with respect to the work shaft 20, the phrasing cutter 42 of the phrasing cutter shaft 40 and the shaving cutter 70 of the shaving cutter shaft 66 both mesh with the work 22 of the work shaft 20. Therefore, the meshing of the cutters 42, 70 from the state in which the phrasing cutter 42 meshes with the work 22 to the state in which the shaving cutter 70 meshes with the work 22 can be favorably performed. This enables continuous processing.

[Advantage of Invention] As described above, according to the present invention, either the phrasing cutter or the shaving cutter can be engaged with the work. Therefore, by changing the number of revolutions of the phrasing cutter and the shaving cutter, the phrasing can be changed. The processing accuracy of the chamfering process by the cutter and the shaving process by the shaving cutter can be improved.

Further, when the cutter meshes from the state in which the phrasing cutter meshes with the work to the state in which the shaving cutter meshes with the work, both the phrasing cutter and the shaving cutter mesh with the work. Good meshing can be achieved, and continuous processing can be performed.

Furthermore, since a single rotary drive means with variable rotation speed is provided, the drive means is single, and therefore, reduction of equipment cost can be achieved.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of a finishing device for a helical gear according to an embodiment of the present invention, and FIGS. 2, 3, and 4 are movable bodies for moving a phrasing cutter shaft and a shaving cutter shaft with respect to a work shaft. Three
It is explanatory drawing which shows the state of a position. 10 ... Base, 12, 14 ... Frame, 16, 18 ... Shaft, 20 ... Work axis, 22 ... Work, 24 ... Moving body, 32 ... Motor, 34 ... Ball screw, 36 ... Top Body, 38 ... Lower body, 40 ... Phrasing cutter shaft, 42 ... Phrasing cutter, 46 ... Rotating body, 66 ... Shaving cutter shaft, 70 ... Shaving cutter, 72 ... Motor, 74 ... For shifting Gear box, 80 ... Timing gear box.

Claims (1)

[Scope of utility model registration request] 1. A work shaft having a work, a phrasing cutter shaft having a phrasing cutter disposed on one side of the work shaft for performing a phrasing process on the work, and an opposite side of the work shaft from the phrasing cutter shaft. And a shaving cutter shaft having a shaving cutter for shaving the work, the framing cutter shaft and the shaving cutter shaft are rotatably supported so that the phrasing cutter meshes with the work and the shaving cutter separates from the work. Alternatively, a moving body that moves the phrasing cutter shaft and the shaving cutter shaft with respect to the work shaft so that the phrasing cutter separates from the work and the shaving cutter meshes with the work, and a single rotation drive unit with a variable rotation speed. , The rotary drive Synchronization means for simultaneously transmitting the rotation from the means to the phrasing cutter shaft and the shaving cutter shaft, and A finishing device for a helical gear, characterized in that the phasing cutter of the cutter shaft and the shaving cutter of the shaving cutter shaft are both configured to mesh with the work of the work shaft.