JPH01164517A - Gear cutting machine with burr removing device - Google Patents

Abstract

PURPOSE:To remove a burr caused by gear cutting concurrently with the gear cutting by receiving a signal for stopping the gear cutting when it has been performed to a fixed position, and providing an adjusting device to automatically press and withdraw a burr removing tool. CONSTITUTION:While a gear cutting machine body is making a gear cutting action, an adjusting device 1-3 receives a signal from the body, and thereby functions to withdraw a burr removing tool so as not to come into contact with the periphery of a member to be cut. When the gear cutting action of the gear cutting machine body is advanced to a fixed position of the member to be cut, and stopped there, and while the member to be cut receives a signal from the gear cutting machine body to continue its rotation, an adjusting device 1-3 functions to make the edge of the burr removing tool 3 abut on the burr formed at the end of the member to be cut for removing the burr, and then functions to withdraw the edge of the tool 3. The above-mentioned serial motions are automatically done interlockingly with the gear cutting machine body to complete a burr removing action as the member to be cut is mounted on the gear cutting machine.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention (Field of Industrial Application) The present invention relates to a gear cutting machine, and particularly to one equipped with a deburring device.

(Conventional wave vfI) The contents and structure of the conventional technique will be explained with reference to FIGS. 2 to 4.

Figure 2 is a conceptual diagram showing only the main parts of the gear cutting machine showing the correlation between the hob cutter and the workpiece.
The hob cutter 2 is rotatably supported by the hob cutter holding mechanism 1-1 of the gear cutting machine 1. Then, the workpiece 4 is pressed against the outer peripheral surface of the blade of the hob cutter 2 so that their axes are at a predetermined angle.

The workpiece 4 is rotatably held by the workpiece holding mechanism 1-2 of the gear cutting machine 1, and is pressed against the outer circumferential surface of the rotating hob cutter 2 blade as described above, and is driven by a drive device (not shown). Accordingly, a gear is created on the workpiece 4 while both rotate at a mutually set rotation ratio.

In the machining process of the gear cutting machine shown in Fig. 2, the hob cutter 2 starts cutting from the left end of the workpiece 4, and when it reaches a predetermined position near the right end and stops cutting, the hob cutter 2 starts cutting from the left end of the workpiece 4 and stops cutting. Cut up the end using the hob cutter 2 (
b) As shown in the figure, it is inevitable that burrs 4-2 will occur on the outer periphery of the workpiece 4 due to cutting.

(Problems to be Solved by the Invention) In the prior art, a deburring jig 5 as shown in FIG. 3 is used as a means for removing the burr 4-2, and
As shown in a) and (b), the jig 5 is fitted onto the part of the workpiece 4 where the burr 4-2 is generated and rotated, and the work to remove the burr 4-2 is performed in a separate process. That was the reality.

As shown in FIG. 3, the deburring jig 5 has an inner circumference that is slightly larger than the outer diameter of the processed part of the workpiece 4: ΦD-α.
At ΦD+α, a plurality of grooves 5-2 are formed on the inner circumferential surface as a means for forming the blade portion 5-1 for removing burrs, and the shoulder portions of the grooves 5-2 that are in contact with the inner circumferential surface are formed into an acute angle shape. The blade portion 5-1 is formed as follows.

As with general machine tools, there are many cases in which one worker works on the gear cutter 1 in a relaxed manner, and while gear cutting is being performed on one of the gear cutting machines 1, another machine is being used to cut the gear. Since it is possible to take steps to remove the burr 4-2 from the processed workpiece 4, it does not add 100% of the man-hours, but it does require one person's work, and since it is manual work, the burr 4-2 can be removed. It was also unavoidable that the removal state of No. 2 would be uneven.

The present invention provides a gear cutting machine capable of removing burrs generated during gear cutting at the same time as the gear cutting without bothering the operator.

(2) Structure of the Invention (Means for Solving Problems) A gear cutting machine equipped with a deburring device of the present invention has a mechanism for rotatably holding a workpiece, and a mechanism for rotating the workpiece, and a mechanism for rotating the hob cutter in the direction of the teeth of the workpiece. The hob cutter and the workpiece are provided with a mechanism that allows the hob cutter to rotate freely in a direction forming a predetermined angle with the rotation axis of the workpiece and to adjust the amount of pressure contact between the hob cutter and the outer peripheral surface of the workpiece. A gear cutting machine body is equipped with a drive device that drives at a speed ratio of The receiver automatically removes the burr by placing a separately prepared deburring blade in the vicinity of the cut-up side end of the gear cutting process on the outer peripheral surface of the process, and at a position offset in the circumferential direction from the process area of the hob cutter. A mechanism is provided in the main body of the gear cutter, which is fixed via an adjusting device so that the cutting edge of the cutting tool can be pressed against or retracted.

(Function) In a gear cutting machine equipped with a deburring device as described above,
When the hob cutter cuts burrs on the edge of the workpiece, it receives a signal from a device that automatically stops when the hob cutter advances to a predetermined position, and automatically applies pressure to the deburring blade. By providing a deburring device with an adjusting device that can be retracted, it is possible to remove burrs at the same time as gear cutting.

(Example) The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a conceptual diagram of a gear cutting machine equipped with a deburring device according to the present invention, and the configuration of the main body 1, hob cutter 2, holding mechanism 1-1 thereof, and holding mechanism 1-2 for the workpiece 4 is shown in FIG. This device is the same as that of the prior art shown in FIG. 2, and is provided with a new deburring device to which a deburring knife 3 is attached via an adjustment device 1-3.

The deburring device according to the present invention has a drive capable of bringing the cutting edge of the deburring knife 3 close to the outer periphery of the workpiece 4, bringing it into contact with the vicinity of the cut-up part at the end of the workpiece, and retracting it. The deburring cutter is mounted through an adjusting device 1-3 equipped with a device, and while the gear cutter main body is performing gear cutting operation, the adjusting device 1-3 receives a signal from the main body and operates. Then, the deburring cutter is retracted so as not to come into contact with the outer periphery of the workpiece, and when the gear cutting operation of the gear cutter body advances to a predetermined position on the workpiece and the gear cutting operation stops, the number 48 is removed. While the workpiece continues to rotate, the receiver
The adjusting device 1-3 operates to bring the cutting edge of the deburring knife 3 into contact with the burr generated at the end of the workpiece to remove the burr, and after removing the burr, the adjusting device 1-3 operates to retract the cutting edge of the deburring knife 3.

This series of operations is automatically operated in conjunction with the gear cutting machine body, and the deburring operation can be completed while the workpiece is attached to the gear cutting machine.

(3) Effects of the Invention Since the gear cutting machine of the present invention has the above-described configuration, burrs generated during gear cutting can be removed without manual processing by the operator while the workpiece is attached to the gear cutting machine. Since it can be removed with a burr, it has the effect of being able to remove burrs evenly.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing only the main parts of the relationship between the hob cutter of the gear cutting machine according to the present invention, the workpiece, and the deburring device, and shows the state (a) seen from the front of the hob cutter 2 and the workpiece Figure 2 is a conceptual diagram of a conventional gear cutting machine, showing the hob cutter 2 viewed from the front (a) and the machined surface of the workpiece 4. Figure 3 is a front view (a) and cross-sectional view (b) of a conventional deburring jig, and Figure 4 is a schematic diagram showing the state of deburring using the same jig. be. Explanation of symbols 1... Gear cutting machine, 1-1... Hob cutter holding mechanism, 1-2... Workpiece holding mechanism, 1-3...
-Adjustment mechanism for holding a deburring blade, 2...hob cutter, 3...deburring blade, 4...workpiece, 4-1...processed tooth part, 4-2...
- Burr, 5... Deburring jig, 5-1... Blade. 5-2... Groove on the inner circumference that forms the blade. Patent claimant Nippon Servo Co., Ltd.

Claims (1)

[Claims] A mechanism for rotatably holding a workpiece; It has a mechanism that adjustably holds the amount of contact, a drive device that rotates the hob cutter and the workpiece at a set speed ratio, and a device that stops the machining operation when the gear cutting progresses to a predetermined position. In the gear cutting machine, a separately prepared deburring blade is installed in the gear cutting machine body near the cut-up side end of the gear cutting process on the outer peripheral surface of the workpiece, and also at the processing area of the hob cutter. What is claimed is: 1. A gear cutting machine equipped with a deburring device, characterized in that the mechanism is fixed at a position shifted in the circumferential direction via an adjustment device that automatically presses or withdraws the cutting edge of the cutting tool.