JPH0538514U - Work shake detection device - Google Patents

Abstract

(57) [Summary] [Purpose] Automates the detection of shake of a chucked work and shortens the measurement time to reduce the ratio to the machining cycle time and save labor. [Structure] An intermediate table 3 and an upper table 4 are provided on the lower table 1 so as to be slidable in the Z-axis direction.
Cylinder mechanism 7 for moving back and forth in the Z-axis direction within a predetermined range is provided, and between the middle table 3 and the upper table 4, an adjusting screw 12 for moving the upper table 4 in the Z-axis direction and the upper table 4 are locked at appropriate positions. Adjusting screw 1 for moving the swivel base 5 in the X-axis direction between the upper base 4 and the swivel base 5.
5 is provided with a fixing screw 17 for locking the swivel base 5 at an appropriate position, the upper base 4 is provided with a swivel arm 6 that swivels about the Z axis, and a sensor 19 is attached to the tip of the swivel arm 6 to make the swivel A swivel cylinder mechanism 18 for swiveling the swivel base 5 is provided on the base 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work shake detection apparatus that automatically detects shake of a chucked work.

[0002]

[Prior Art]

 Before starting machining, it is necessary to detect runout of the chucked work and confirm whether it is correctly chucked. Conventionally, every time a workpiece is chucked, the tool attached to the turret or the tip of the torus attached to the turret is brought close to the measurement point of the workpiece, and it is checked whether the distance is constant while rotating the workpiece. I checked it while looking at it, or I used the magnetic base to bring the contact of the dial gauge attached to the turret into contact with the measurement point of the work, and read the scale while rotating the work in the same way.

[0003]

[Problems to be solved by the device]

 It is inefficient to detect the work deviation manually, and the ratio of the detection work to the machining cycle time cannot be ignored. Regardless of all the workpieces having different shapes, when processing workpieces of the same shape in succession, the same operation is repeated, and there is a risk of having to put hands into the machine. It is expensive and not preferable from the viewpoint of safety.

[0004]

[Means for Solving the Problems]

 The present invention is an apparatus for automating the shake detection of a work. Its structure is such that a middle stand is placed on a lower stand, an upper stand is placed on the middle stand, and an arm base is placed on the upper stand. Assemble each set of two slides in the Z direction and the other set so that they can slide in the X-axis direction. One set that slides in the X-axis direction and one set that slides in the Z-axis direction A moving mechanism that moves the upper table in the sliding direction and a fixing mechanism that locks the table in an appropriate position are provided between them, and a set of tables that slide in the Z-axis direction without the fixing mechanism is provided. Is provided with a drive means for moving the upper table forward and backward within a predetermined range, and a moving arm with a sensor attached to the tip is provided on the arm base, and the sensor is detected and retracted from the moving arm. A drive means for moving between each other in a direction orthogonal to the X axis is provided. .

[0005]

[Action]

 By moving each table equipped with a moving mechanism for each of the Z-axis and the X-axis and locking it to a preset position corresponding to the work by the fixed mechanism, the sensor can be moved to the measurement position and retracted by each driving mechanism. Automatically move to and from position to quickly complete measurements.

[0006]

【Example】

 A work shake detection apparatus according to the present invention will be described with reference to the drawings. Reference numeral 1 denotes a lower base fixed to a fixed object such as a bed. On the lower base 1, a center stand 3 is assembled slidably in the Z-axis direction via a linear guide 2.2, and on the middle stand 3. An upper table 4 is similarly slidably assembled in the Z-axis direction, and a slide guide is formed between the middle table 3 and the upper table 4. A swivel base 5, which is an arm base, is mounted on the upper base 4 so as to be slidable in the X-axis direction, and a sliding guide is formed between the upper base 4 and the swivel base 5. Further, the swivel base 5 is equipped with a swivel arm 6 that swivels around the Z axis.

A cylinder mechanism 7 in which the protruding direction of the piston rod 7 a is directed in the Z-axis direction is fixed to the lower base 4, and the tip of the piston rod 7 a is connected to a bracket 8 fixed to the middle base 3. In addition, the center platform 3 can be moved in the Z-axis direction by the cylinder mechanism 7 which is the driving means. Further, a limit switch 9.9 is arranged on the lower base 4 at a predetermined interval in the Z-axis direction, and when the center base 3 is moved, the limit switch 9.9 comes into contact with the dog 10 attached to the center base 3 to set a predetermined backward movement. Confirmation of the operation to reach the position and the forward position is performed.

The middle table 3 is provided with a support plate 11 on one surface in the Z-axis direction that reaches the side surface of the upper table 4 along the surface thereof, and the support plate 11 is loosely inserted into the support plate 11 to prevent it from coming off. The processed adjusting screw 12 is rotatably supported, and the protruding portion of the adjusting screw 12 is screwed into a screw hole (not shown) provided in the upper base 4. When the adjusting screw 12 is rotated thereby, the upper base 4 is screw-fed in the Z-axis direction. Further, the side surface of the upper base 4 is provided with a fixing screw 13.13 capable of abutting a protruding tip threaded through the upper base 4 against the sliding surface of the middle base 3, so that the upper base 4 can be locked at an appropriate position.

The upper base 4 is provided with a support plate 14 on one side in the X-axis direction that reaches the side surface of the swivel base 5 along the surface, and the support plate 14 is loosely inserted in a direction orthogonal to the plate surface. The adjustment screw 15 that has been processed to prevent it from coming off is rotatably supported, and the protruding portion of the adjustment screw 15 is screwed into a nut member 16 provided on the turning table 5. Accordingly, when the adjusting screw 15 is rotated, the swivel base 5 is screw-fed in the X-axis direction. Further, a fixing screw 17 having a projecting tip threaded and penetrated is brought into contact with a sliding surface of the upper base 4 is screwed to a side portion of the swivel base 5, so that the swivel base 5 can be locked at an appropriate position.

A swivel cylinder mechanism 18 is incorporated in the swivel base 5, and the swivel arm 6 can be swung via the swivel cylinder mechanism 18 which is a drive means. The swivel arm 6 has a tip bent in the Z-axis direction, and a sensor 19 is attached to the bent tip 6a. Further, the swivel base 5 is provided with a limit switch 20.20 for contacting the swivel arm 6 with the contacts to confirm the operation thereof when the sensor 19 reaches the measurement position or the retracted position. The cylinder mechanism 7 and the swing cylinder mechanism 18, which are the driving means, are connected to the hydraulic circuit shown in FIG. 3, and both cylinder mechanisms are hydraulically driven by the operation of the solenoid valve 21.22, and the middle base 3 and the swing cylinder are rotated. The operation of the arm 6 is controlled based on a detection signal from a sensor and an operation signal from a limit switch, which are input to a controller (not shown).

According to the workpiece shake detection device thus formed, for example, when the workpiece to be chucked is the aluminum wheel W _{1 having} a large diameter, the swing cylinder mechanism 18 moves the swing arm 6 to the measurement position side. Position the sensor 19 at P ₁ and the cylinder mechanism 7 moves the base 3 by the distance S in the Z-axis direction to detect the deflection of the aluminum wheel W ₁ at the measurement position P ₂ and further chucking. When changing the work to be used to the aluminum wheel W ₂ having a small diameter, both the center stand 3 and the swing arm 6 are moved to the measurement position side and are positioned at P ₂ , and the adjusting screws 12 and 15 are rotated. in, elevator 4 and the sensor 19 and the distance moved each SZ and SX is positioned to P ₃ and swivel slide 5 to the Z axis and the X-axis direction, only preset such locking in the fixing screw 13.17 , Ru can automatically detect the deflection of the subsequent chucking the aluminum wheel W _2. Only when the work is changed like this, it is sufficient to re-create the preset.

In the above-described embodiment, the sensor is described as being movable between the measurement position and the retracted position by the turning arm, but it is also possible to move between the two positions by an arm that moves linearly in addition to turning. Alternatively, a motor other than the cylinder mechanism can be used as the drive means for the center base and the swing arm. Further, the middle base is moved to the lower base with an adjusting screw, and the upper base is moved to the middle base by the driving means.For example, the moving direction and the base of the group provided with the driving means can be freely selected. The moving mechanism and the fixing mechanism are not limited to those in the embodiment. Further, if the movement amount according to the work is programmed in the computer in advance and the moving mechanism and the fixing mechanism are also computer-controlled, the continuous operation linked with the robot or loader can be automated. In the present invention, the term "on a stand that is slidably combined with each other" is understood to mean the side opposite to the mounting and fixing side in the case where the stands are combined laterally.

[0013]

[Effect of the device]

 According to the present invention, when machining the same work piece continuously, presetting for the first one will automatically measure after that, so the cycle time can be shortened and continuous operation combined with a robot or loader can be achieved. It is also easy to automate and is effective as a labor saving measure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a shake detecting device for a work according to the present invention.

FIG. 2 is a front view showing a shake detecting device for a work according to the present invention.

FIG. 3 is a hydraulic circuit diagram of drive means.

FIG. 4 is an explanatory diagram of a preset operation.

[Explanation of symbols]

1 ・ ・ Lower stand, 2 ・ ・ Linear guide, 3 ・ ・ Middle stand, 4 ・ ・
Upper base, 5 ... Swivel base, 6 ... Swivel arm, 6a ... Bending tip, 7 ... Cylinder mechanism, 8 ... Bracket, 9 ...
・ Limit switch, 10 ・ ・ Dog, 11 ・ ・ Support plate, 12 ・ ・ Adjusting screw, 13 ・ ・ Fixing screw, 14 ・ ・ Support plate, 15 ・ ・ Adjusting screw, 16 ・ ・ Nut member, 17 ・
・ Fixing screw, 18 ・ ・ Rotating cylinder mechanism, 19 ・ ・ Sensor, 20 ・ ・ Limit switch, 21, 22 ・ ・ Solenoid valve, W ₁ , W ₂・ ・ Aluminum wheel.

Claims (1)

[Scope of utility model registration request] 1. A middle stand is arranged on the lower stand, an upper stand is arranged on the middle stand, and an arm base is arranged on the upper stand. One set is slidably mounted in the X-axis direction, and the upper base is slid between the bases that slide in the X-axis direction and the bases that slide in the Z-axis direction. A moving mechanism for moving the table to the upper table and a fixing mechanism that locks the table at an appropriate position are provided, and the upper table is moved forward and backward within a predetermined range between the tables that slide in the Z-axis direction without the fixing mechanism. A drive means is provided, and a moving arm having a sensor attached to the tip thereof is provided on the arm base, and the sensor is moved relative to the moving arm in a direction orthogonal to the X axis between the detection position and the retracted position. A workpiece shake detection device provided with a driving means for driving the same.