JPS62119452A - Inspecting apparatus - Google Patents

Abstract

PURPOSE:To prevent the lowering of property of copying a pipe due to a shoe of a flat, by providing a parallel link mechanism and two pairs of roller mechanisms. CONSTITUTION:A pitch is set for each pair of rollers 16 and as a driving section 11 is operated to move a bracket 7 in the direction F, a shoe 12 hits the surface of a pipe 1 but the shoe 12 is shifted in the direction R until the roller 16 hits the pipe 1 by a pressing force of the driving section 11. This can keep a probe 2 and a gap M on the surface of a pipe 1 constant. Two pairs of rollers 16 hold the pipe 1 at a specified pitch, which allows the following of the positional deviation of the pipe. Moreover, the pitch of the roller 16 is adjusted with a handle and a screw bar against changes in the outside diameter size of the pipe 1. In the manner, the surface height of the pipe 1 can be set within a lift stoke in the directions of arrow R and R' of a parallel link 14.

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a pipe having a circular cross section, for example.

The present invention relates to an inspection device for inspecting a bar or the like (hereinafter abbreviated as a vibrator).

[Conventional technology]

FIG. 4 is a diagram showing a conventional inspection device for inspecting pipes. In the figure, fi+ is a pipe, (21 is a friend probe + (3) installed opposite the pipe (11) that inspects the pipe (1), and a housing containing the probe (2) + ( 411j Above housing (3
), and has a surface of approximately the same curvature as the outer diameter of the pipe fi+ in contact with the surface of the pipe (11); (51 is the housing (3! pointed arrow AI A
'direction.

That is, the gimbal ring (6; is the gimbal ring (5)) which is rotatably connected around the axis S1.
means the gimbal frame t (7
) is the gimbal frame above (61!, arrow C.

The first bracket is rotatably connected in the σ direction r, that is, around the axis S3, (8) is a fixed frame, and (9) is the fixed frame (second bracket attached to 81) ll [l is the first bracket (7) and the second bracket (7).
a first parallel link connecting the brackets (9);

(Lυ is connected to the fixed frame (8) as shown by the arrow, and is connected to an area rotatable in the D' direction, that is, around the axis S4, and connected to the first parallel link frame as shown in the arrow EIy direction, that is, rotatable around the axis S5. This is a first drive unit, such as an air cylinder, which is connected to the first parallel link αI and moves the first parallel link αI up and down in the direction of arrow F+F'.

Is it because the conventional inspection equipment is configured as above? Even if the pipe (1) is bent or misaligned with the inspection device, the probe (21) can be set at a predetermined position relative to the pipe (1). In other words, FIG. ) t - FIG. 2 as seen from the direction of arrow G. FIG.

Figure 7 is a view of the pipe +11 in Figure 5 viewed from the direction of arrow J. ν In these views! 1 on the arrow of pipe (1)
．． For the positional deviation K in the direction Kj' (indicated by the broken line),
Parallel link + 1 (movement in the direction of arrow F,
(shown with a dashed line)! Inspection device arrow B, B
What is the degree of freedom in the direction 7 for the positional deviation in the 6' direction (indicated by the broken line) on the arrow Ks of the t-pipe (1)? With the degree of freedom of the inspection device in the direction of arrow AtA', the probe (21t-pipe However, due to the difference between the outer diameter of the pipe (1) and the curvature of the shoe (4), the distance between the pipe (1) and the surface of the probe (210) Since the gap M of the shoe (4) is different, accurate inspection cannot be carried out.For this purpose, it is necessary to prepare several types of shoes (4) whose curvatures match the outer diameter of the pipe (11). If you make the surface with the curvature of 4) 7 lats, there is no need to prepare a shoe (41). become unable to become

[Problems to be solved by the invention] The above-mentioned problems in conventional inspection devices. The purpose is to prepare many types of sheaths (4) in order to correspond to changes in the outer diameter of the pipe fi+, and to prevent deterioration in conformability to the pipe (1) due to flat sheaths.

[Ninth Means for Solving Problems J] The inspection device according to the present invention has a flat shoe for making the gear metal constant between the pipe envelope surface and the probe, and a mechanism section having a parallel link of 8g2. and the degree of freedom that the conventional inspection device has for following the positional deviations shown in FIGS. 5 to 7 of the pipe.

The above-mentioned problems can be solved by providing a mechanical part with two pairs of rollers that can set the pitch.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention, and FIG. 2 is a partial view of FIG. 1 as viewed from the arrow X direction ρ).

Figure 3 is a diagram of Figure 1 viewed from the direction of arrow Y, and is t(11
~(31s (51~I is the same as the conventional @ exchange i device.

This is a part that has similar functions. aX5 is a chute t0 with a flat surface attached to the cylinder (31)
3 is a frame connected to the gimbal ring (5) with a degree of freedom of rotation in the direction of arrows N and N', that is, axis S6, and α41 is a frame connected to the frame αJ in the direction of arrow FDP'. That is, it is coupled with the housing (31) with a degree of freedom of rotation about the axis S7, and is coupled with the housing (31 with the degree of freedom of rotation about the arrow Q, t in the direction of Q', that is, the degree of freedom of rotation about the axis S8, and the arrow R*R A second parallel link having an elevating function in the 'direction, (I5 is one part iif! - the above-mentioned second parallel link α4 is the arrow T, and the T' force direction, that is, the axis S9
The other side is connected with the degree of freedom of rotation around the axis 810, and the other side is connected with the degree of freedom of rotation around the axis 810. via link 1!41) - Uzing (3
) is raised and lowered in the direction of the arrow RIK'.The second drive unit 9, such as an air cylinder, is a pair of holes set on the surface of the pipe (1) and sandwiching the housing (3).
-Ra, (17a) (17b) F1 Each of the above rollers a
The roller bracket (17a) is provided with a right-hand thread, and the roller bracket (17b) is provided with a left-hand thread, forming a pair. Alternatively, it is a threaded rod that connects a pair of roller brackets (17a) and (17b), and has a right-hand thread on one side and a left-hand thread on the other side, with the approximate center as a boundary. al is a handle attached to one end of the threaded rod for turning the threaded rod and setting the pitch of each pair of rollers α.

In the inspection apparatus configured as described above, the pitch of each pair of rollers flfil is roughly set.

When the first drive part a1) is operated and the first bracket (7) is moved in the direction of arrow F, the shoe α2 first hits the surface of the pipe (1), but the pressure generated by the first drive part α11 The shoe (13) is moved in the direction of the arrow R by the force until the roller 11e hits the pipe (1). This movement causes the gap Jt between the probe (21 and the surface of the pipe (110), and the opposition of the shoe eel to the pipe (1). Since the surface is flat, it remains constant.

Also, since the two pairs of rollers H hold the pipe (11) at a predetermined pitch, the pipe 1 +
K1' to I(s, Ks' can be imitated for a 1-digit deviation.Furthermore, the pitch of a pair of rollers (111) can be adjusted by adjusting the pitch of the handle 0 and the screw thread for changes in the outer diameter size of the pipe (1). Adjustment K sets the surface height of the pipe (1) when the roller α mallet contacts the pipe (1) within the range of the vertical stroke of the second parallel link + 141 in the directions of arrows R and R'. be able to.

[Effects of the Invention] As described above, this invention makes it possible to maintain a constant distance between the pipe surface and the probe without having to prepare shoes with various curvatures to accommodate changes in the outer diameter size of the pipe. As well as being able to.

A predetermined test can also be performed for misalignment of the pipe in each direction.

It should be noted that although the above description is for pipes, it goes without saying that the same can be said for rods having a circular cross section.

[Brief explanation of drawings]

The first to third factors are diagrams showing embodiments of the present invention. The fourth factor is a diagram showing a conventional inspection device, and FIGS. 5 to 1 are diagrams for explaining the positional deviation of the pipe. In the figure, (1) is a pipe, (2) is a probe, and (3
I is housing, (51 is gimbal link + Ia + u
Gimbal frame, (7) is the first bracket, (81
is the fixed frame (9) is the second bracket, and αQ is the first parallel link. aυ is the first drive part, (13 is the shoe, Q3fl frame! a4 is the second parallel link Ia9 is the second drive part -
α0 is a roller αD is a roller bracket, α ladder is a threaded rod, and α9 is a handle. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

Claims (1)

[Claims] A probe installed opposite the pipe to inspect a pipe having a circular cross section or a material to be tested such as a bar; a housing containing the probe; A shoe having a flat surface facing the inspection surface, a first parallel link that allows the housing to move up and down with respect to the surface of the test material, and a first parallel link that has a flat surface facing the inspection surface; a first drive part coupled to have a degree of freedom of rotation about an axis forming a right angle; a frame to which the drive part is mounted so as to have a degree of freedom of rotation; a gimbal ring coupled with a degree of freedom rotatable about a first axis perpendicular to the longitudinal axis of the test material;
The gimbal ring is a gimbal frame that is connected to the gimbal frame so that it can rotate around a second axis that is perpendicular to the first axis that connects the gimbal frame and the gimbal ring. , a first bracket coupled with a degree of freedom for rotation around a third axis perpendicular to both the first axis and the second axis, and the housing opposite to the test material. holding two pairs of rollers installed to sandwich the and one pair of each of the above rollers,
A roller bracket is provided with a pair of right-hand threads and a left-hand thread, and a right-hand thread is provided on one side from the center, and a left-hand thread is provided on the other side, and the roller brackets are engaged with each of the above-mentioned roller brackets at mutual threaded portions. a threaded rod and a handle for turning the threaded rod; a second parallel link that allows the first bracket to move up and down the pipe relative to the surface; and a second drive unit that moves the second parallel link up and down. and a second bracket for attaching the second parallel link to a fixed frame.