JPH11257946A - Detector for hub surface angle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of the whole of a variable-inspection-position hub surface angle detector including a height change-over apparatus, and to cause it to have and unbulky construction. SOLUTION: A forward/backward sliding base to be driven to an inspection position in the forward or backward direction, and an advancing/retrieving sliding base to be guided by this base and driven to an inspection position in the advancing or retrieving direction, are provided. And on this base, a pair of guide frames on both sides for guiding a tabular copy board supporting substance in the vertical directions, an air cylinder for driving the copy board supporting substance upwards, and a height change-over apparatus 30 which supports the forward/backward-direction intermediate part of the bottom section of the copy board supporting substance from below in such a way as to be able to change the height position of the copy board supporting substance, are provided. The height change-over apparatus 30 is supported by the advancing/retrieving sliding base, and is provide with a rotating board 31 whose peripheral hem section passes a lower position of the intermediate part, a plurality of stoppers 32-32c arranged on a circle passing the peripheral hem section of this rotating board and different from one another in height, and an actuator 35 for driving the rotating board 31 by an angle to position an attached stopper 32-32c to the lower position in accordance with the construction of each car.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying plate for three-dimensionally detecting the inclination of a surface formed by the tips of hub bolts in contact with the tips of at least three hub bolts so as to be tiltable in any direction. A hub surface provided with a profile plate support for supporting, the profile being variable in the front-rear direction, the up-down direction, and the retreating direction with respect to the test vehicle so that the profile plate support is positioned at a test position according to the vehicle structure; The present invention relates to an angle detection device.

[0002]

2. Description of the Related Art According to Japanese Patent Application Laid-Open No. 1-218904, a flat copying plate is supported on a main body driven forward toward a standard hub surface position so as to be tiltable in any direction.
A body is provided with a sensor for detecting a reference plane parallel to a standard hub plane and an angle of the copy board with respect to a reference plane perpendicular to the standard plane, and the copy board is in contact with at least three hub bolt tips. There has been known a hub surface angle detection device which detects the inclination angle when the angle is detected. This makes it possible to three-dimensionally measure the angular displacement of the surface formed by the tip of the hub bolt, and determine the horizontal and vertical inclinations.

In such an apparatus, when the vehicle structure changes, it is necessary to adjust the height of the copying plate or the position in the front-rear direction. Therefore, as shown in FIGS. A device in which the height position of the plate and the position in the front-rear direction are variable is also known. That is, the air cylinder 1 is slidably guided by the guide member 11 extending in the front-rear direction.
2, a front and rear slide base 10 driven to a front and rear inspection position, an elevating slide base 50 guided by the front and rear slide base so as to be slidable in the vertical direction, and a reciprocating direction to the elevating slide base. A reciprocating slide, which is slidably guided by a guide member 51 provided on the side and is erected to support the copying plate 1 in a tiltable manner, and is driven by an air cylinder 52 to an inspection position in the reciprocating direction. A base 60 is provided.

At four corners of the elevating slide base 50, slide posts 55 are provided, and are guided by a cylindrical guide member 53 erected at the four corners of the front and rear slide base 10 so as to be capable of ascending and descending. Are driven upward by an air cylinder 54. Further, on the front and rear slide base 10, in order to switch the height position of the copying plate support 2 driven upward by the air cylinder 54, a contact post 57 provided at the bottom of the lifting slide base 50 is provided. Are provided from below. This height switching device is arranged on both sides of the air cylinder 54,
As shown in FIG. 5, stoppers 43 to 43 having different heights are provided on a slider 42 guided by a guide rail 41.
c is protruded, and an air cylinder 44 provided on the side thereof is provided.
It is driven by.

As a result, the slide base 60 for reciprocation is
It is positioned at the inspection position in the longitudinal direction along the inspection vehicle,
Further, the air cylinder 54 lowers the elevating slide base 50 to support the contact post 57 with the stoppers 43 to 43c. With the height position set by the position selection, the copying plate 1 is advanced by the air cylinder 52. The angle is measured in a state of being driven and abutting on the tip of the hub bolt.

[0006]

However, in this height switching device, since the stopper group is a linear slide type, the movable range of the straight line is large, and if the height switching device is arranged at an intermediate position in the front-rear direction of the copying plate support. This makes it difficult to arrange the lifting air cylinder at the intermediate position. Therefore, in order to secure the accuracy of the height position, accepting that the weight also increases accordingly, the height switching device 40 is arranged at least on both sides or at the four corners of the center of the lower front and rear slide base 10, The elevating slide base 50 on which the reciprocating slide base 60 and the air cylinder 52 are mounted is driven up and down at an intermediate position by, for example, one elevating air cylinder.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a hub surface angle detecting device having a variable inspection position, including a height switching device, which has a light weight and bulkless structure.

[0008]

According to the present invention, in order to attain this object, according to the present invention, in order to three-dimensionally detect the inclination of a surface formed by the tips of a plurality of hub bolts,
Hub surface angle detection in which a copying plate that contacts the tips of at least three hub bolts is supported by a copying plate support that is slidable in the forward and backward directions, the front-rear direction, and the up-down direction with respect to the inspection vehicle so as to be tiltable in any direction. In the apparatus, a front-rear slide base slidably guided by a guide member extending in the front-rear direction and driven to an inspection position in the front-rear direction by an actuator, and provided on the front-rear slide base in the reciprocating direction. Guided slidably by the guide member,
And an advance / retreat slide base driven to an inspection position in the advance / retreat direction by an actuator. The forward / backward slide base guides both side portions of the plate-like copying plate support in the front-rear direction so as to be vertically slidable. A pair of guide members on both sides, an actuator for driving the copying plate support upward, and a height switch for supporting a middle portion of the bottom of the copying plate support in the front-rear direction from below so that the height position of the copying plate support can be switched. A rotary plate that is rotatably supported in a horizontal plane by a slide base for advance and retreat, and whose peripheral portion passes a position below an intermediate portion; and a center of rotation of the rotary plate in the rotary plate. A plurality of stoppers having different heights arranged on a circle passing through the periphery with the point as the center, and a rotating plate at an angle for positioning the corresponding stopper at a lower position according to the structure of the vehicle. Characterized by comprising an actuator for moving.

The copying plate is positioned in the front-rear direction corresponding to the vehicle structure, and a stopper associated with the height switching device is a contact portion of the copying plate support that is raised by the rotation of the rotary plate. It is positioned at a position below an intermediate portion of the bottom in the front-rear direction, and when the copying plate body descends, it comes into contact with a corresponding stopper to set the height position. In this state, when the slide base for advance / retreat is driven forward, the copying plate abuts on at least three hub bolts and inclines corresponding to the surface formed by the tip, and the three-dimensional inclination angle with respect to the reference surface is reduced. The detected hub surface angle data is supplied to a tire mounting device such as a robot.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hub surface angle detecting device for mounting a wheel according to an embodiment of the present invention will be described with reference to FIGS. This device is slidably guided by a rail-shaped guide member 11 extending in the front-rear direction of the inspection vehicle, and has an air cylinder 12 as an actuator.
As described above, the slide base 10 is driven in the front-rear direction according to the vehicle structure, and slides on a rail-shaped guide member 14 provided in the front-rear slide base in the forward and backward directions. A plate-like slide base 20 for reciprocation, which is guided as much as possible and is driven to an inspection position in the reciprocation direction by the air cylinder 15. As shown in FIG. 3, the forward / backward slide base has longitudinal grooves on both sides in the front-rear direction of a plate-like copying plate support 5 that supports the copying plate 1 with a spherical bearing 5a so as to be tiltable in an arbitrary direction. A pair of guide frames 21 is erected on both sides of the guide frame 21a so as to be slidable in the vertical direction at 21a. Furthermore, slide base 2 for advance and retreat
0, an air cylinder 22 for driving the bottom 5d formed horizontally rearward at an intermediate position in the front-rear direction of the lower end of the copying plate support 5 upward, and a front-rear direction for the bottom of the copying plate support 5 driven upward. And a height switching device 30 for supporting the contact post 5b, which is provided below in the middle part, from below.

This height switching device, as shown in FIG.
A rotating plate 31 attached to a rotating shaft 33 supported by a bearing portion 34 provided on the slide base 20 for advance and retreat so that the peripheral portion 31a passes through the position of the contact post 5b and rotatable in a horizontal plane; A plurality of stoppers 32 to 32c having different heights arranged on a circle passing through a peripheral portion 31a around the rotation center point of the rotation plate and the rotation plate 31 whose center is displaced from the contact post 5b are provided. Actuator 35 that drives stoppers 32-32c belonging to the position below contact post 5b according to the structure of the vehicle.
And The actuator includes an air cylinder 35 on a pinion 35a formed around the rotation shaft 33.
and a rack 35f provided on the side of a slider 35e that is attached to the cylinder rod 35c and is guided by a guide rail 35d. If one conventional linear slider type height switching device is to be disposed at the position of the contact post 5b of the copying plate support 5, the length of the bottom portion 5d is greatly increased, and the height of the bottom portion 5d is increased. It is necessary to arrange a lifting air cylinder, and it is difficult to perform a stable lifting drive with one air cylinder.

The air cylinder 35b is 25 mm and 50 m
m, two-stage stroke, normal position, 25mm,
It is possible to switch between four stages of 50 mm and 75 mm. That is, by descending until it comes into contact with any of the stoppers 32 to 32c positioned at a position facing the contact post 5b, the height position of the copying plate 1 is set to four levels according to the vehicle structure.

The operation of the thus-configured hub surface angle detecting device is as follows. The copying plate 1 is an air cylinder 12
Is positioned at the inspection position in the front-rear direction by the drive control according to the vehicle structure of the vehicle, and the rack 35f controls the rotational position of the pinion 35a by the drive control of the air cylinder 35b, and moves to the inspection position in the height direction of the stoppers 32-32c. The corresponding one is positioned below the contact post 5b.
When the air cylinder 22 lowers the copying plate support 5 from the raised position, the contact post 5b is
32c, the height position is set.
In this state, the air cylinder 15 drives the copying plate 1 forward and restrains the copying plate 1 in a state where the copying plate 1 is in contact with the tips of at least three hub bolts. For example, as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-218904, the copying plate 1 is provided by three distance sensors 5c arranged around the spherical bearing 5a.
Then, the distance to the back surface is measured, and from the detected distance relationship, the inclination with respect to the reference plane parallel to the standard hub surface is three-dimensionally detected and taught to the tire mounting robot.

[0014]

According to the present invention, by arranging the stoppers of the height switching device in a circular shape, the movable range thereof can be narrowed. Therefore, the actuator is provided at an intermediate position in the front-rear direction of the support of the copying plate at the upper stage. The intermediate position can be supported by one stopper when ascending and descending, and the entire device is reduced in size and weight, which is advantageous in manufacturing and installation costs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hub surface angle detecting device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a height switching device of the hub surface angle detection device.

FIG. 3 is a longitudinal sectional view of a copying plate support of the hub surface angle detecting device.

FIG. 4 is a perspective view of a conventional hub surface angle detection device.

FIG. 5 is a perspective view of a height switching device of the hub surface angle detecting device according to FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copying plate 5 Copying plate support 10 Front and rear slide base 20 Slide base for advance and retreat 31 Rotating plate 31a Peripheral part 32-32c Stopper 35 Actuator

Claims (1)

[Claims] In order to three-dimensionally detect the inclination of a surface formed by the tips of a plurality of hub bolts, a copying plate in contact with the tips of at least three hub bolts moves forward and backward with respect to the inspection vehicle. In a hub surface angle detection device supported on a copying plate support slidable in the vertical and vertical directions so as to be tiltable in any direction, the hub surface angle detection device is slidably guided by a guide member extending in the front and rear direction, and is slidably guided by an actuator. Front and rear slide base driven to the inspection position, and a forward and backward slide base that is slidably guided by a guide member provided on the front and rear slide base in the forward and backward directions, and driven by the actuator to the forward and backward inspection positions. A slide base, and a pair of opposite sides for guiding the front and rear sides of the plate-like copying plate support so as to be slidable in the vertical direction. A guide member, an actuator for driving the copying plate support upward, and a height switching device for supporting a middle portion of the bottom of the copying plate support in the front-rear direction from below so as to be able to switch the height position of the copying plate support. The height switching device is rotatably supported by the slide base for retreating in a horizontal plane, and a rotating plate whose peripheral portion passes below the intermediate portion, and rotation of the rotating plate in the rotating plate. A plurality of stoppers having different heights arranged on a circle passing through the peripheral portion with a center point as a center, and the rotating plate having an angle for positioning the corresponding stopper at the lower position according to the structure of a vehicle And an actuator for driving the hub surface angle.