JP2601057Y2 - Sizing measurement device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring device for measuring the diameter of a workpiece during grinding.

[0002]

2. Description of the Related Art In a grinding machine, when performing high-precision grinding using a sizing measuring device, when there are two sizing measurement points of one kind of work or when processing a plurality of works. If the size measurement position is different in the horizontal direction, the size measurement device needs to be moved. In addition, in production type machines, there is a strong demand that the operation be performed automatically, not by a worker.

For this purpose, conventionally, a sizing device is fixed to a bracket attached to two pilot bars connected to a hydraulic cylinder rod, and the sizing device is shifted to a measuring point by a hydraulic cylinder.

[0004]

However, in the above-mentioned conventional apparatus, only the shift of the hydraulic cylinder at the two positions of the forward end and the backward end is performed. Therefore, in various types of workpieces, sizing measurement cannot be performed at three or more positions. When sizing measurement is performed at three or more positions, a step of changing the position to a sizing measurement device by an operator. Replacement is required, and the production operation rate is significantly reduced.

An object of the present invention is to provide a measuring device for measuring a workpiece by a signal corresponding to a dimension measuring position of a workpiece or a plurality of fixed locations of the workpiece.
An object of the present invention is to provide a sizing measurement device which can automatically move a body position to a desired measurement position and solves the above problem.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to process a work on a table which is slidably guided on a bed and provided with a headstock and a tailstock for supporting the work. A servo motor that guides the slide table movably in the axial direction of the spindle on the side opposite to the side to be moved, and drives the slide table with a signal corresponding to the workpiece and the measurement position of the workpiece, and the rotation of the servo motor Is provided with a conversion mechanism for converting the movement into reciprocal movement of the slide table, and a sizing device main body is fixed on the slide table.

[0007] Further , the conversion mechanism is provided with a function of the table.
On the side opposite to the side where the
The rack is fixed to the
The pinion rotated by the rotor
Characterized by being provided on an id table
It is.

[0008]

According to the above construction, the servo motor is driven by a signal corresponding to a work or a measurement position of the work, and the rotation of the servo motor is converted into a reciprocating movement of the slide table by a conversion mechanism, thereby the size of the slide table is measured. Measuring instrument
The main body is automatically moved to a required fixed measurement position of the work.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a machine tool bed;
Is a table slidably guided on the bed 1. A headstock 3 is fixed on the table 2, and a tailstock 4 is installed so as to be able to advance and retreat with respect to the headstock 3. 3a is a headstock center, 4a is a tailstock center, and the work W is supported by both centers 3a and 4a. Ma
In addition, as shown in FIG.
A grindstone G for grinding is arranged.

The side on which the grinding wheel G performs the grinding of the workpiece W
A base 5 is fixedly mounted on a side surface of the table 2 on the opposite side with respect to the spindle axis.
Are guided so as to be movable in the axial direction of the spindle through the upper linear way 7a and the lower linear way 7b.

The slide table 6 is provided with a servomotor 11 as a drive source and a conversion mechanism for changing the rotation of the servomotor 11 into a reciprocating movement of the slide table 6.

The mechanism will be described with reference to FIGS. An output shaft 11a of the servomotor 11 whose axis is oriented in the direction of movement of the slide table 6, and a gear housing 12 fixed between the servomotor 11 and the slide table 6, which is rotatably mounted coaxially with the output shaft 11a. Axis 1
3 is connected to the drive shaft 13 with a worm wheel 14, and the gear housing 1
The worm wheel 14 and the worm 16 provided at the lower end of a transmission shaft 15 rotatably supported around a vertical axis perpendicular to the drive shaft 14 are meshed with the worm wheel 2. A gear 17 is fixed to the upper end of the transmission shaft 15.

On the other hand, a rack 8 is fixed to the base 5 between the upper linear way 7a and the lower linear way 7b in an axial direction parallel to the upper linear way 7a and the lower linear way 7b. The rack 8 has the gear 17
And a pinion 19 provided on the slide base 6
The pinion 19 is in mesh with the gear 17 on the transmission shaft 15 via an idler gear 18.

The pinion 19 and the idler gear 18 are
The backlash between the gear 17 and the rack 8 is removed to improve the positioning accuracy of the measuring device main body 10 described later.
The mechanism is an idler gear 1 as shown in FIGS.
8 and a pinion 19 are supported on a connecting plate 20, and a slide block 22 pressed in a direction away from the gear 17 by a spring 23 on a guide shaft 21 fixed to the slide table 6 in an axial direction parallel to the rack 8 is slidable. The slide block 22 and the connecting plate 20 are guided.
And a structure in which

On the slide table 6 provided with the servo motor 11 and a conversion mechanism for converting the rotation of the servo motor 11 into reciprocating movement of the slide table 6, a sizing measuring device is provided.
Body mounting bracket 9 is fixed, the the sizing instrument
Upper and lower fillers 10a, 10b on the body mounting bracket 9
Is fixedly provided . Reference numeral 24 in FIGS. 1 and 2 denotes a slide cover, which prevents chips and coolant from entering the slide surface of the slide table 6.

Since the present invention has the structure as described above, a signal corresponding to the work W supported by the headstock center 3a and the tailstock center 4a and a measuring position of the work W is given to the servomotor 11. Then, the output shaft 11a rotates at a required number of rotations, and rotates the drive shaft 13.

The rotation of the drive shaft 13 is transmitted to a transmission shaft 15 via a worm wheel 14 and a worm 16,
The rotating pinion 19 is rotated via the gear 17 on the transmission shaft 15 meshing with the rack 8 and the idler gear 18 to move the slide table 6 in the axial direction of the work W, and the sizing measuring device main body 10 is fixed to the work W. Position at the position corresponding to the dimension measurement location.

When the slide base 6 is moved, the pinion 19 and the idler gear 18 are integrally formed by a connecting plate 20. The connecting plate 20 is moved by a spring 23 in a direction away from the gear 17 via a slide block 22. Since the pressing force is applied, the gear 17
The teeth of the pinion 19 and the teeth of the pinion 19 come into contact with the teeth on the surfaces of the rack 8 facing each other, and the backlash between the gear 17 and the rack 8 is eliminated, so that the movement amount of the slide table 6 by the servo motor 11 is accurate. Is a fixed size measurement
The container body 10 can achieve high-precision positioning.

[0019]

[Effect of the invention] As described above , according to the invention, the table
On the side opposite to the side that processes the workpiece
The slide table is provided movably in the axial direction of the spindle.
The slide table is supported by installing
Is it configured to move by robot motor?
Can automatically change the position of the sizing instrument body in accordance with the sizing measurement positions of the workpiece or multiple workpieces.
Measurement position of the workpiece supported by the spindle and tailstock
Can be changed freely to reduce setup change work time.
And the processing efficiency is remarkably improved. In addition,
When removing the work or moving the tailstock.
Id table does not get in the way and improves workability
it can. In addition, a slide table is attached to the table
Measurement of the workpiece supported by the spindle and tailstock
After moving the size measuring instrument body to the fixed position,
During grinding, the table moves and the
Perform measurement without moving from the measurement position
be able to. In addition, as described in claim 2,
Then, fix the conversion mechanism to the rack on the side of the table.
Move the slide table by rotating the pinion on the rack
Conversion mechanism using ball screw and nut
The advantage that the conversion mechanism itself can be made compact configuration compared to
There is.

[Brief description of the drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is a view taken in the direction of an arrow A without a tailstock in FIG. 1;

FIG. 3 is a sectional view showing an embodiment of a drive mechanism in the device of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

 1 bed 2 table 3 headstock 4 tailstock 5 base 6 slide table 7a upper linear way 7b lower linear way 8 rack 9 fixed size measurementContainer bodyMounting bracket 10 MeasurementContainer body  Reference Signs List 11 servo motor 11a output shaft 12 gear housing 13 drive shaft 14 worm wheel 15 transmission shaft 16 worm 17 gear 18 idler gear 19 pinion 20 connecting plate 21 guide shaft 22 slide block 29 spring

Claims (2)

(57) [Scope of request for utility model registration] A slidable guide on a bed ,
Lower table having a headstock and tailstock for supporting the over click
A servomotor that guides the slide table movably in the spindle axis direction on the side opposite to the side where the workpiece is machined, and drives the slide table with a signal corresponding to the workpiece and the measurement position of the workpiece, A sizing measuring device comprising a conversion mechanism for changing the rotation of a motor into a reciprocating movement of the slide table, and a sizing device main body fixed on the slide table. 2. The apparatus according to claim 1 , wherein said conversion mechanism is configured to :
On the side opposite to the side to be machined in the longitudinal direction of the table.
The rack is fixed, and the servo motor
The pinion is rotated by the slide so that it can rotate
2. A structure provided on a table.
3. The sizing measurement device according to 1.