JPH02198712A - Gearing machine with toothed wheel measuring function - Google Patents

Abstract

PURPOSE:To reduce troubles in arrangement and to improve workability, by rolling the gear to be ground for a detector by synchronously controlling the servomotors for a table and for main shaft, moving so as to bite with the detector and processing by a measurement control device. CONSTITUTION:Servomotors 5, 6 are synchronously controlled so that the movement of a table 2 and the turning of a main shaft 3 keep the relation decided by items of the toothed wheel 11 to be ground, cutting in by rotating a servomotor 3 solely and after grinding by generating the tooth face of one tooth, the servomotor 6 is rotated by one tooth part by a stroke end and dividing is executed. For measuring the accuracy of the toothed wheel of the gear 11 to be ground the probe of a detector 10 is brought into contact with the tooth face, rolling is given to the gear 11 to be ground, the output of the detector 10 is input to a measurement control device and the measurement result is obtained. On one part the detector 10 output is corrected with the difference from a logical value as the error by inputting the positional data by encoders 12, 13 and a correct tooth profile accuracy can be obtained.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a gear processing machine equipped with a gear measurement function.

<Conventional technology and issues> Conventionally, accuracy measurements of gears processed with gear processing machines such as gear grinders, hobbing machines, m-wheel shapers, etc. were performed using a gear processing machine separate from the gear processing machine. .

In other words, after machining a gear to be cut using a gear processing machine, the gear to be cut was removed from the gear processing machine, replaced with a separate gear measuring machine, and then measured.

However, as mentioned above, gear processing machines.

If the gear measuring machine is a separate unit, it will be necessary to replace the gear to be cut. As a result of gear measurement, if tooth profile correction machining is required, the gear to be cut must be reinstalled into the gear processing machine.

In this way, if the gear processing machine and gear measuring machine are separate,
Attachment of the gear to be cut requires time and effort to change gears, etc., which worsens work efficiency.

Means for Solving the Problems> In order to solve the above problems, the present invention provides a gear processing machine that performs machining by making a gear to be cut generate a generating motion relative to a tool. a table, a main shaft supported rotatably on the table about an axis perpendicular to the direction of movement of the table and to which a gear to be cut is attached; a table drive servo motor for driving the table; A driving main shaft adjustment servo motor, a position control device capable of synchronously controlling both of the servo motors, a detector attached to a tool head that supports the tool, and a gear to be cut that is moved to the detector by the operation of the motor. A gear processing machine with a gear measurement function includes a measurement control device that processes the output of the detected temperature when the gear is rolled against the gear.

Function: The position control device synchronizes the table drive servo motor and the spindle drive servo motor to cause the gear to be cut to roll relative to the detector. The gear to be cut moves so as to mesh with the detector, and the shape of the gear at that time is measured by the detector and processed by the measurement control device to obtain gear accuracy.

Example of implementation An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration diagram of an embodiment of the present invention, and FIG. 2 shows its control system.

In this device, as shown in FIG. 1, a table 2 is mounted on a head 1 so as to be able to slide back and forth.
The main shaft 3 is rotatable about an axis perpendicular to its direction of movement.
is supported, and a gear W to be cut is attached to one end of the main shaft 3.

The table 2 is connected to a table driving servo motor 5 via a ball screw 4, and the movement of the servo motor 5 causes the table 2 to reciprocate over the ped 1. Further, a direct drive servo motor 6 for driving the main shaft is connected to an end of the main shaft 3 via a reduction gear 7, and the main shaft 3 is rotationally driven by this servo motor.

Both the table drive servo motor 5 and the main shaft drive servo motor 6 are connected to a position control device 8, so that simultaneous two-axis control is possible.

In such a configuration, the table drive servo motor 5 and the spindle drive servo motor are controlled by the position control device 8 so that the movement of the table 2 and the rotation of the spindle 3 maintain the following relationship determined by the specifications of the gear W to be cut. The motor 6 is synchronously controlled.

Assuming that the generating pitch circle radius of the gear W to be cut is R (am), the feed distance of the table 2 #LC] and the rotation angle of the main shaft 3 is θ (deg), the gear to be cut 1 performs a basic circular rolling motion.

On the other hand, a detector 10 is attached to a grindstone head 9 that includes a grindstone G. The detection result of this detector 1° is input to the measurement control device 11.

Further, the spindle drive servo motor 6 is equipped with a rotary encoder 12 for detecting the rotational position of the spindle 3, and the head 1 is equipped with a linear encoder 13 for detecting the sliding position of the table 2. , is input to the position control device 8 and the measurement control device 11.

The cutting operation in the gear grinding process when grinding the tooth surface of the workpiece gear W using the gear grinding machine configured as described above is performed by rotating the main shaft drive servo motor 3 by itself by an amount equivalent to the cutting amount (this is the same as the synchronization described above). This can be achieved by applying cutting rotation to the gear W to be cut (which results in a shift in the phase of interlocking), thereby bringing the tooth surface of the gear W to be cut closer to the grinding surface of the grindstone G. At this time, the relative positional relationship between the gear W to be cut and the grindstone G (center distance 1a)
There is no need to change.

Furthermore, after the table 2 makes one reciprocation and generates the tooth surface of one tooth of the workpiece gear W by the above-mentioned operation, the workpiece gear W
At the end of the stroke of the table 2, where the meshing contact with the grindstone G is broken, the main shaft drive servo motor 6 is independently rotated by the indexing angle of one tooth of the workpiece gear W to index the next tooth. Transition to surface creation movement.

To measure the accuracy of the tooth surface of the gear W to be machined as described above, the measuring stylus 10 of the detector 10 is placed on the tooth surface of the gear W to be cut.
a to give the gear W to be cut the basic circular rolling interlock.

The output of the detector 10 is input to the measurement control value fi'll,
Data processing is performed here, and a measurement result of the tooth profile accuracy of the gear W to be cut is obtained.

In addition, the rotational position of the main shaft 3 and the sliding position of the table 2 are detected by encoders 12 and 13, respectively, and the servo motor 3,
Closed-loop control is performed by feeding back to the position control device 8 which performs synchronous control.

On the other hand, the position data from the encoders 12 and 13 is input to the measurement control device 14, and the difference from the theoretical value given by equation (1) is treated as an error in the synchronous drive system and the output of the detector 10 is corrected. Correct tooth profile accuracy of the cutting gear W can be obtained.

In the above embodiment, the measurement of tooth profile accuracy of a gear was taken as an example, but the same principle can be applied to measurement of tooth trace accuracy and pitch accuracy.

Moreover, the present invention is not limited to gear grinders, but can be similarly applied to other gear processing machines such as hobbing machines and gear shaping machines.

<Effects of the Invention> According to the gear processing machine with a gear measurement function according to the present invention, (1) The tooth profile of the gear to be cut can be measured by simply adding a detector using the processing position control function of the gear processing machine. , there is no need to prepare a separate gear measuring machine.

(2) Gear machining and gear measurement can be performed while the gear to be cut is attached to the gear processing machine without setup.

(3) If the measurement results indicate that correction processing is required, it is possible to continue processing.

Effects such as

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a gear processing machine with a gear measurement function according to an embodiment of the present invention, and FIG. 2 is a system diagram of its control system. In the drawing, 2 is a table, 3 is a spindle, 5 is a servo motor for driving the table, 6 is a direct drive servo motor for driving the spindle, 8 is a position control device, 9 is a grinding head, 10 is a detector, and 11 is a measurement control device. , 12 is a rotary encoder, 13 is a linear encoder 1, W is a gear to be cut, and G is a grindstone.

Claims (1)

[Claims] A gear processing machine that performs machining by generating a gear to be cut relative to a tool, has a table that is reciprocatably supported on a head, and a table that rotates around an axis that is perpendicular to the direction of movement of the table. A main shaft that is freely supported and to which a cut gear is attached, a table driving servo motor that drives the table, a main shaft driving servo motor that drives the main shaft, and position control that can synchronously control both of the servo motors. a detector attached to a tool head that supports the tool; and a measurement control device that processes the output of the detector when the gear to be cut is rolled and interlocked with the detector by operation of the motor. A gear processing machine with a gear measurement function.