JPH04336902A - Turret lathe - Google Patents

Abstract

PURPOSE:To standardize a turret body or the like for each case of fitting a touch sensor and a rotational tool, and simplify wiring in the case of fitting the touch sensor. CONSTITUTION:A turret lathe has an irrotational stationary turret constitution member 4b at the front side of a turret body 4a capable of indexing rotation, and a touch sensor 14 fitted to the turret body 4a for measuring a workpiece. In addition, a peripheral groove 25 is formed around the external surface of a cylindrical wall section 24 projected from the front of the turret body 4a. A communication wire 23 connected to the touch sensor 14 is laid in the groove 25, and covered with an elastic band 26 having O-ring shape. The communication wire 23 in the peripheral groove 25 and another communication wire 31 at the stationary turret constitution member 4b are connectable to each other via a non-contact type connector 29 laid between the cylindrical wall section 24 and the member 4b.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret lathe equipped with a measuring device such as a touch sensor for measuring a workpiece inside the machine.

0002

2. Description of the Related Art Conventionally, there is a turret lathe in which a touch sensor is attached to one of the tool stations of the turret so that the dimensions of a workpiece after machining can be measured while the workpiece is held on the spindle.

In this case, the communication line of the touch sensor passes through the turret shaft to which the turret is mounted, and is connected to the control device from the rear end of the turret shaft. Further, the communication line is connected to the rotation center of the front surface of the turret via a non-contact connector to prevent the communication line from being twisted due to the rotation of the turret.

On the other hand, some turret lathes are equipped with a plurality of rotary tools for drilling or milling, and any rotary tool is driven by a rotary tool drive shaft within the turret shaft.

[0005]

The touch sensor and the rotary tool are selectively mounted on the turret. However, turrets to which a rotating tool is not attached and turrets to which a rotating tool is attached have not been standardized, resulting in a problem of poor productivity.

In particular, when attempting to attach a touch sensor to a turret to which a rotary tool can be attached, it is difficult to arrange the non-contact connector at the center of rotation on the front of the turret, making wiring difficult and requiring a large amount of man-hours. There is a problem with that.

[0007] An object of the present invention is to provide a turret lathe that facilitates wiring of measuring instruments and facilitates standardization with other types of turret lathes equipped with rotating tools and the like.

[0008]

[Means for Solving the Problems] In a turret lathe, which has a non-rotating fixed turret component on the front side of a turret body that indexes and rotates, and a measuring device for measuring a workpiece is provided on the turret body, the front side of the turret body A circumferential groove is provided on the outer periphery of the cylindrical wall portion that protrudes from the cylindrical wall. A communication line connected to the measuring device is placed in this circumferential groove and covered with an elastic band. The communication line in the circumferential groove and the communication line on the side of the fixed turret component can be connected to each other by a non-contact connector disposed between the cylindrical wall of the turret body and the fixed turret component.

[0009]

[Operation] According to this configuration, the turret body side part and the fixed turret component side part of the connector that connects the communication line are usually at positions shifted from each other in the circumferential direction, so that the measuring instrument comes to the measurement position. When the turret body is indexed, the circumferential positions match and the connection is established. The communication line placed in the circumferential groove of the turret body is prevented from coming off by an elastic band.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4. In FIG. 2, a spindle 3 that grips and rotates a workpiece W is installed on a spindle stock 2 provided on a bed 1,
Adjacent to the headstock 2, a turret carriage 5 carrying a turret 4 is installed on a rail 6 so as to be able to be moved laterally (in the X-axis direction). The turret carriage 5 includes a slide base 7 and a turret slide 8 installed on the slide base 7 so as to be movable back and forth (in the Z-axis direction). The turret 4 is drum-shaped with a polygonal front face, and various tools are mounted at each tool station formed by each circumferential surface portion.

As shown in FIG. 3, the turret 4 is fixed to the tip of a hollow turret shaft 10 inserted into a housing cylindrical portion 9 of a turret slide 8. As shown in FIG. The turret shaft 10 is rotatable and slightly movable in the axial direction, and is indexed and rotated together with the turret 4 by rotation of an indexing motor (not shown) from a gear portion 10a formed on the outer periphery. A coupling 11 is provided between the turret 4 and the tip of the housing cylindrical portion 9 to ensure the rigidity of the turret 4. After indexing rotation of the turret 4, the turret shaft 10 is connected to a rear hydraulic cylinder (not shown). ), the coupling 11 is brought into engagement.

As shown in FIG. 1, the turret 4 consists of a turret main body 4a fixed to the turret shaft 10, and a fixed turret component 4b disposed in front of the turret main body 4a. It is fixed to the tip of the coolant pipe 12 inserted therethrough. The coolant pipe 12 is relatively rotatably supported by the turret shaft 10 via a support member (not shown), and is fixed at the rear end to coolant supply equipment. The front cover 13 of the turret 4 is attached to the fixed turret component 4b.

A touch sensor 14 is connected to a measuring instrument frame 16 at one of the tool stations on the outer periphery of the turret body 4a.
A measuring instrument 15 is installed. Touch sensor 14
When a workpiece or the like touches the detection ball 14a at the tip of the touch probe, an ON signal is generated, and the communication line 17 is housed in a protective pipe 18 and connected to the equipment side connector 19a of the measuring instrument frame 16. ing. The device side connector 19a and the turret side connector 19b constitute a non-contact second connector 19, and the turret side connector 19b is provided on a fitting member 21 fixed in the insertion hole 20 of the turret body 4a. .

The measuring instrument frame 16 also includes an air nozzle 2 that sprays cleaning air onto the detection ball 14a.
2 is provided, and the air nozzle 22 is connected to the turret body 4a.
It is connected to an air source via an air path (not shown) formed within.

The wiring of the communication line 23 connected to the second connector 19 will be explained. The turret main body 4a has a cylindrical wall portion 24 concentric with the center of rotation on the front surface, and the cylindrical wall portion 24
A circumferential groove 25 is formed on the outer periphery. The communication line 23 is placed in a circumferential groove 25 and covered with an elastic band 26 made of an O-ring. An end 23a of the communication line 23 connected to the second connector 19 is drawn out from a slit cut out laterally in the circumferential groove 25.

The other end 23b of the communication line 23 is pulled out into a housing hole 28 provided in the cylindrical wall portion 24 at a position spaced apart from the second connector 19 in the circumferential direction, and a movable side connector 29a installed in the housing hole 28 is pulled out. It is connected to. Movable side connector 29
A and the fixed connector 29b constitute a non-contact first connector 29. The fixed side connector 29b is
With the turret body 4a indexed to the angle at which the measuring instrument 15 is used, it is attached to the fixed turret component 4b via a support 30 at an angular position facing the movable connector 29a. The communication line 31 of the fixed side connector 29b is inserted into the turret shaft 10 and connected to a control device.

According to the turret lathe having this configuration, the touch sensor 14 is brought into contact with the workpiece W while the turret body 4a is indexed to a measurement angle at which the measuring device 15 is located on the main shaft 3 (not shown) side. Measure the dimensions of.

Movable side connector 29a of first connector 29
and fixed side connector 29b are non-contact connector components, and are separated from each other in the circumferential direction as the turret main body 4a rotates. When the turret main body 4a is indexed to the measurement angle, the movable connector 29a and the fixed connector 29b face each other as shown in FIG. 1, and communication becomes possible. In this way, by utilizing the indexing function of the turret 4, the communication lines 23 and 31 of the measuring instrument 15 can be connected using the first connector 29 located away from the center of rotation. Therefore, there is no need to provide a non-contact connector at the center of rotation as in the prior art, the degree of freedom in the installation position of the connector is improved, and the turret 4 can be easily standardized with other types of lathes.

Furthermore, the communication line 2 in the turret body 4a
3 is placed in the circumferential groove 25 and covered with an elastic band 26, so it is securely fixed and there is no problem of wire breakage due to wobbling or the like. Furthermore, the communication line 23 can be fixed simply by hanging the elastic band 26, so the wiring work is easy. From this point of view, it is easy to standardize the turret 4 with a type of turret lathe that does not have the measuring device 15.

FIG. 4 shows a turret lathe in which the turret body 4a of the example shown in FIG. 1 is used as is, but a rotary tool 32 is provided in place of the measuring instrument. The rotary tool 32 is connected to the turret body 4
The tool bits 33 are rotated by receiving a drive from the bevel gear 34 inserted into the insertion hole 20 of the turret body 4a, and a plurality of the tool bits 33 are installed at each tool station of the turret body 4a. The turret 4 is provided with a drive transmission mechanism 35 consisting of a gear train on the fixed turret component 4c, and the rotary tool 3
2, when indexed to the processing position, the bevel gear 34 meshes with the output bevel gear 36 of the drive transmission mechanism 35.

The drive transmission mechanism 35 transmits the rotation of the rotary tool drive shaft 40 inserted into the turret shaft 10 from an outer gear 39 at the tip of the shaft 40 to the output bevel gear 36 via gears 37 and 38. . A gear case 41 of the drive transmission mechanism 35 is fixed to a fixed turret component 4c. The vicinity of the tip of the rotary tool drive shaft 40 is rotatably supported via a bearing 44 by a ring-shaped support member 43 supported via a bearing 42 on the circumferential wall portion 24 of the turret body 4a. The cylindrical wall portion 24 and the fixed turret component 4c can be fixed to each other by a locking mechanism 46 that removably engages with a locking hole 45 in the cylindrical wall portion 24.

[0022] As described above, regarding the turret body 4a etc.,
A lathe having the rotary tool 32 and a lathe having the measuring instrument 15 can be standardized. In this case, the cylindrical wall portion 24 of the turret body 4a is used as an installation part for a bearing 42 for supporting the rotary tool drive shaft 40, and also as shown in FIG.
It is used as a member for forming a circumferential groove 25 for installing a communication line 23.

[0023]

Effects of the Invention The turret lathe of the present invention provides a non-contact connector for connecting the communication line of the measuring instrument between the cylindrical wall of the turret body and the fixed turret component, and improves the indexing function of the turret. Because I connected using
There is no need to place a non-contact connector at the center of rotation of the turret as in the past, increasing the degree of freedom in wiring. Therefore, it is easy to standardize the turret with other models. Moreover, the communication line of the measuring instrument is arranged in the circumferential groove provided in the cylindrical wall,
Since the lid is covered with an elastic band, the communication line can be fixed simply by hanging the elastic band, which simplifies the wiring work, and this also has the effect of facilitating standardization.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a turret part in a lathe according to an embodiment of the present invention.

FIG. 2 is a schematic front view of the lathe.

FIG. 3 is a cutaway side view of the turret carriage of the same lathe.

FIG. 4 is a sectional view showing the turret section of a lathe of another model that is standardized with the same lathe.

[Explanation of symbols]

3... Main shaft, 4... Turret, 4a... Turret body, 4b,
4c... Fixed turret component, 10... Turret shaft, 12
...Coolant piping, 14...Touch sensor, 15...Measuring instrument, 19...Second connector, 19a...Measuring instrument side connector, 1
9b...turret side connector, 20...insertion hole, 23...communication line, 25...circumferential groove, 26...elastic band, 29...first connector, 29a...movable side connector, 29b...fixed side connector, 31...communication line, 32...Rotary tool, 35...Rotation transmission mechanism, 40...Rotary tool drive shaft

Claims (1)

[Claims] 1. A measuring device for measuring a workpiece is provided on a turret body that rotates for indexing, a circumferential groove is provided on the outer periphery of a cylindrical wall portion protruding from the front surface of the turret body, and a communication line connected to the measuring device is provided. A communication line in the circumferential groove is disposed in the circumferential groove and covered with an elastic band, and is connected to a communication line in the circumferential groove between a non-rotating fixed turret component adjacent to the front side of the turret body and the cylindrical wall. A turret lathe provided with a non-rotating connector that connects communication lines on the fixed turret component side to each other.