JPH03138098A - Device for positioning work - Google Patents

Abstract

PURPOSE:To improve accuracy of gage face by pushing gage pin assembly to a master gage and constituting work positioning device for forming the gage face. CONSTITUTION:The apparatus 1, which executes the positioning of a work with the gage face corresponding to cross sectional shape of the work, is constituted with a holder 2, the assembly 29 of plural same length gage pins 9 shiftable in axial direction and having spherical shape at one end, gage blocks 3 for forming the gage face on the gage pin assembly 29 by pushing the one end thereof to the master gage 24, clamping mechanism 16 for holding the gage face shape and a cancel plate 17 by which heights of one ends of the gage pins 9 are made to the same and the gage face shape is returned back to flat surface. By this method, the gage face is formed in a short time and substantially, shape of the master gage can be statically transferred into the gage pin assembly side and the accuracy of gage face shape can be obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for receiving and positioning a predetermined workpiece on a gauge surface corresponding to the cross-sectional shape of the workpiece in, for example, a welding assembly process.

Conventional technology This type of positioning device is, for example, the Japanese Patent Publication No. 60-57.
As shown in Publication No. 957, a gauge plate is constituted by a thin plate laminate formed by laminating a large number of strip-shaped thin plates, and each thin plate is separated by a vibrator unit placed oppositely on one end surface of the gauge plate. A device is known in which an arbitrary gauge surface shape is created on the other end surface side of the gauge plate by excitation displacement.

Problems to be Solved by the Invention In the above-mentioned conventional structure, the position of each thin plate is changed by the two-dimensional movement and excitation action of the vibrator unit, and the gauge plate made of a laminated body of thin plates is changed. Since the gauge surface is created on the end face side, it takes a long time to create the required gauge surface, and the final shape accuracy of the gauge surface depends on the positioning accuracy of the transducer unit. become. Therefore, the shape accuracy of the gauge surface described above is not as good as that of a structure in which the gauge surface is created by matching the master gauge or the actual workpiece.

Moreover, when exciting and displacing the thin plates one by one, it is expected that the excitation effect will extend to the thin plates that are not the object of excitation, and there is a limit to the improvement in the shape accuracy of the gauge surface.

The present invention was made in view of the above problems.
The purpose is to provide a positioning device that can create any gauge surface with high precision in a short time by substantially transferring the shape of a master gauge.

Means for Solving the Problems The positioning device of the present invention includes a holder and a number of gauge bins supported by the holder and each having the same length and having one end formed in a spherical shape so as to be slidable in the axial direction. A gauge block that can create an arbitrary gauge surface on one end side of a gauge bin assembly by pressing one end of the assembly against a master gauge, and a gauge block that is provided on a holder and pressurizes and restrains each gauge bin in the radial direction, thereby achieving the above-mentioned A clamp mechanism for holding the shape of the cage surface, and a clamp mechanism provided in the holder at a position facing the other end of the gauge bin assembly so as to be able to move toward and away from the other end of the gauge bin assembly, and one end of each gauge bin is arranged at the same height. and a cancel plate that returns the shape of the gauge surface to a flat shape.

Function: According to this structure, the clamping force of the clamp mechanism is adjusted to allow axial movement of each gauge bin, and the height of one end face of each gauge bin is adjusted by pressing the cancel plate against the other end face of the gauge bin assembly. are arranged. Then, by pressing the gauge bin assembly aligned as described above against a predetermined master gauge, each gauge bin appears and disappears, and the shape of the master gauge is transferred to one end surface of the gauge bin assembly to create a gauge surface. , this gauge surface shape is held by clamping each gauge bin in the radial direction (with pressure) using a clamp mechanism.

Example 1 to 4 are diagrams showing one embodiment of the present invention.

In the figure, reference numeral 2 indicates an approximately )-shaped holder which is the center of the positioning device 1, and reference numeral 3 indicates a gauge block supported between legs 4 of the holder 2. The gauge block 3 includes a plurality of guide pieces 6 on a plurality of support rods 5 horizontally suspended on the holder 2.
It has a structure in which a gauge bottle 9 is slidably held via a rubber 8 between grooves 7 and 7 formed in each guide piece 6. Portions 9a and 9b are already formed.

A clamp lever 1 is attached to the side of the holder 2 via a bottle 10.
1 is supported, one end of a support rod 5 is connected to the upper end of the clamp lever 11 via an intermediate block 12, and the lower end of the clamp lever 11 is connected to a piston rod 15 of a clamp cylinder 14 via a pin 13. has been done. 30 is a spring interposed between the leg portion 4 and the intermediate block 12.

By clamping each guide piece 6 between the legs 4.4 via the support rod 5 by the clamping action of the clamp cylinder 14, each gauge bottle 9 can be restrained and held at an arbitrary height position. It has become.

Here, a multi-stage cylinder type is used as the clamp cylinder 14, and at the -th stage clamp position, a spare is provided so that the gauge bins 9 can be moved in the axial direction if an external force is applied to each gauge bin 9 in the axial direction. Furthermore, at the second stage clamping position, it serves to firmly clamp the gauge bin 9 from the radial direction so as to prevent the gauge bin 9 from moving in the axial direction. Therefore, the clamp mechanism 16 of the gauge bin 9 is constituted by the support rod 5, the guide piece 6, the clamp lever 11, the clamp cylinder 14, and the like.

Below the gauge bin 9 is a horizontal cancel plate 17.
is installed. The cancel plate 17 includes a pair of links 19 . connected to the holder 2 by a hinge pin 18 .
20, while the lower ends of the links 19, 20 are connected to the piston rod 23a of the cancel cylinder 23 via the intermediate link 21 and the connecting block 22.

By moving the cancel plate 17 up and down by the action of the cancel cylinder 23, all the spherical portions 9a at the upper end of the gauge bin 9 can be aligned at the same height as shown in FIG.

In the positioning device configured in this manner, as shown in FIG.
As shown in FIG. 5, the spherical portion 9a of the gauge bottle assembly 29
The side faces the master gauge 24.

In this state, move the gauge bottle assembly 29 to the master gauge 24.
When pressed against the master gauge 24, each gauge bin 9
The shape of the master gauge 24 is transferred as it is to the spherical portion 9a side of the gauge bottle assembly 29, thereby creating a gauge surface 25 of a predetermined shape as shown in FIG.

At this time, by pre-clamping each gauge bin 9 by the clamp mechanism 16, each gauge bin 9 slides smoothly in the axial direction due to the pressing force against the master gauge 24, and no pressing force is applied (if so, each gauge bin 9 is restrained and held in that position by the frictional force of the rubber 8.

Once the gauge surface 25 of a predetermined shape is created in this way, the clamp cylinder 14 is operated to clamp the gauge surface 25, and each gauge bottle 9 is applied in the radial direction with a pressure greater than that in the pre-clamped state in order to maintain the shape of the gauge surface 25. It is used for positioning the workpiece after being pressure restrained.

In addition, if it becomes necessary to change the shape of the gauge surface 25, the clamp cylinder 14 is placed in a pre-clamp state and the cancel plate 17 shown in FIG. After aligning the heights, a new gauge surface 25 is created using the same procedure as above.

Furthermore, when the above-mentioned positioning device 1 is used in a fully automated welding assembly equipment, the positioning device 1 itself is connected to the arm 27 of the robot 26 as shown in FIG.
While the robot 26 is supported at the tip, a plurality of master gauges 24, 27, 28 are prepared in advance around the robot 26, and the master gauges 24, 27, 28 are mounted around the robot 26 according to the type of workpiece W.
It is preferable to select one of them to create the gauge surface 25, and then move the positioning device 1 to the workpiece positioning position P to perform the work.

Effects of the Invention As described above, according to the present invention, the gauge surface is created by pressing the gauge bin assembly against the master gauge, so the gauge surface can be created in a very short time, and it is possible to create the gauge surface in an extremely short time. Since this is a method in which the shape of the master gauge is statically transferred to the gauge bin assembly side without any action, the shape accuracy of the gauge surface is faithful to the shape of the master gauge and has extremely high precision.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a right side view of FIG. 1, and FIG.
The figure is a sectional view taken along line A-A in Figure 1, Figure 5 is a perspective view of the gauge bin assembly and master gauge facing each other, and Figure 6 is the shape of the gauge surface formed on the gauge bin assembly. FIG. 7 is a perspective view showing the configuration when the positioning device of the present invention is applied to welding assembly equipment. 1... Positioning device, 2... Holder, 3... Gauge block, 6... Guide piece, 7... ■Groove, 8
...Rubber, 9...Gauge bottle, 9a, 9b...
Spherical part, 11... Clamp lever, 14... Clamp cylinder, 16... Clamp mechanism, 17... Cancel plate, 24... Master gauge, 25...
Gauge surface, 29...gauge bin aggregate, W...work. Figure 1 1; Value table 1 2: Horta 1 3: 1-Shift mouth! Proboscis 6: 1 Id piece 9; Cage bins 9a, 9b: Spherical 11: Clamp lever 14; Clamp lever 16: Clamp twisting 17: Kimani J rep 1 29: Lean collection/interval flap 24: Master Gooji 25, Cage! Figure 5 Figure 7

Claims (1)

[Claims] (1) In a device that receives and positions a workpiece on a gauge surface corresponding to the cross-sectional shape of the workpiece, a holder and a number of gauge pins of the same length each having a spherical end and supported by the holder are arranged in the axial direction. A gauge block is provided in a slidable manner and is capable of creating an arbitrary gauge surface on one end of the gauge pin assembly by pressing one end of the gauge pin assembly against a master gauge; a clamp mechanism that maintains the above-mentioned gauge surface shape by pressurizing the holder; and a clamp mechanism that is provided in the holder at a position facing the other end of the gauge pin assembly so as to be able to move toward and away from the other end of the gauge pin assembly; A workpiece positioning device comprising: a cancel plate that returns the shape of the gauge surface to a flat shape by aligning the height of one end;