JPS62114728A - Bend stress relieving device - Google Patents

Abstract

PURPOSE:To improve the accuracy in straightening by providing a stress detecting means and press distance calculating means and by pressing a sample with a press member by the calculated press distance. CONSTITUTION:The 1st proximity sensor 20 is provided on the upper part of the flange 2 as for a sample and 2nd proximity sensor 40 is arranged by fixing to a press control part 33. The distance Xa upto the surface left end of the flange 2 and the minimum value Xb of the distance upto the surface are measured by the sensor 20. The bend X of the flange 2 is found from the difference in the distance Xa and Xb and the sensor 20 is returned as it was. The press distance for straightening the flange 2 is then found based on the bend X, a press pressing part 31 is descended and the descent distance of the pressing part 31 is correctly measured via a pressing plate 34. In this way, the straightening accuracy in the bend deflection of the flange 2 is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bending strain relief device, and more particularly to a bending strain relief device that corrects a bent sample by pressing it.

[Prior Art] Conventionally, for example, axle housings for automobiles are manufactured by detecting distortion caused by welding during the manufacturing process visually or using a simple ruler, and by operating a press using a human rib.
The distortion of the bend was corrected.

The most commonly used simple ruler is the Taber ruler, which has two taper constants M1900 and M910 as shown in Figure 5 so that their sloped surfaces interlock with each other, and the axle is adjusted by the amount of sliding. The distance between the gap between the housing 920 and the fixed plate 930 was measured, and the distortion due to bending was measured.

[Problems to be Solved by the Invention] However, in the conventional example described above, it is extremely difficult to accurately determine the bending distortion of the axle housing, and furthermore, pressing the press with a human rib makes it difficult to accurately determine the bending distortion. It was not possible to correct the distortion, and the work had to be repeated many times, which took a long time.

The present invention has been developed by focusing on these conventional problems, and is an excellent method that can accurately detect sample distortion, accurately correct bending distortion, and requires short work time. The purpose of the present invention is to provide a bending strain relief device.

Column U 11 [Means for solving the problems] In order to achieve the above object, the present invention has the following configuration as a means for solving the problems. That is, the present invention, as illustrated in the basic configuration diagram of FIG. a pressing distance calculating means M4 for calculating a pressing distance necessary for correcting the bending of the sample, in which the pressing part M3 comes into contact with the sample and advances based on the degree of bending detected by the bending distortion detecting means; Pressing control means MJI for controlling the pressing section to press the sample by a pressing distance;
The gist of the present invention is a bending strain relief device characterized by comprising:

Here, the bending distortion detecting means M2 detects the degree of bending of the sample M1, and detects the degree of bending in a non-contact manner using, for example, a proximity sensor such as a high frequency trigger type, a capacitance type, or a magnetic type. It may be detected or directly measured using a magnetic scale.

The pressing distance calculating means M4 calculates the pressing distance necessary for correcting the bending of the sample M1 based on the degree of bending detected by the bending distortion detecting means M2 using a predetermined correlation. Note that the above-mentioned pressing distance is the distance that the pressing part M3 moves to contact and push the sample M1, and the above-mentioned correlation is, for example, as follows.

When the degree of curvature of the sample is χ, the pressing distance y required to correct the curvature of the sample has a quadratic function correlation as determined by y χ χ χ χ C . Note that the above a
, b, and c are constants determined by the material, shape, length, etc. of the sample.

The pressure control means M5 includes, for example, a part of a sensor such as a proximity sensor or a magnetic scale that measures the distance that the pressure part M3 moves in the pressing direction after contacting the sample M1, and a part of the sensor such as a magnetic scale, and the pressure part M3.
and a stop section that performs control to stop the drive of No. 3. Alternatively, the pressing section M3 may be constituted by a control section that performs control to drive the pressing distance calculated by the pressing distance calculation means M4.

[Operation 1] The pressing distance calculating means M4 calculates the pressing distance necessary for correcting the bending of the sample M1 based on the output of the bending distortion detecting means M2 according to a predetermined correlation, and outputs a signal to the pressing controlling means M5. are doing. Thereby, the pressing control means M5 causes the pressing part M3 to press the sample M1 by the calculated pressing distance.
Activate.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings of FIGS. 2 to 4.

FIG. 2 is a schematic configuration diagram of this embodiment. In the same figure, 1
is a central component of an axle, and is an automobile axle housing to which drive shaft brakes, wheel bearings, suspension springs, etc. are attached. The axle housing 1 has a hole (not shown) in the center thereof, and a flange 2 is provided around the mouth of the hole. The flange 2 is attached to the main body part 3 by welding, but during this welding, the flange 2 is bent. This embodiment is a bending distortion correcting device that corrects this bending distortion.

The axle housing 1 is installed on a surface plate 1o via two supports 11 and 12.

Reference numeral 20 denotes a first proximity sensor of high frequency emission type, which is configured to always operate at a height H above the surface plate 10 by a sensor operation control section 21. That is, the sensor operation control section 21 controls the arm sections 22, 23 . By sequentially displacing the joint portion 24, the first proximity sensor 20 is moved to an arbitrary position within the space above the flange 2.

30 is a press, and a press pressing part 31. Press arm 32.
and a press control section 33. The press control section 33 controls the press arm section 32 to perform vertical sliding linear motion, and the press pressing section 31 connected to the press arm section 32 presses the flange 2.

Further, the press arm portion 32 is provided with an indicator plate 34, and the distance to the indicator plate 34 is measured by a high-frequency trigger type second proximity sensor 40 fixed to the press control unit 33. That is, the second proximity sensor 40 is connected to the indicator plate 34.
By measuring the distance from the press pressing part 31
You can know the distance traveled.

Next, 50 sends a signal to the sensor operation control unit 21 to move the first proximity sensor 20 to an arbitrary position, receives detection signals from the first proximity sensor 20 and the second proximity sensor 40, and presses the This is a microcomputer that controls the operations of 30.

The microcomputer 50 includes an input boat 51 for inputting detection signals from the first proximity sensor 20 and the second proximity sensor 40, and a bending of the sample based on the detection signals inputted via the input boat 51. A central processing unit (CP) calculates the pressing distance necessary for correction of the
U) 52, a read-only memory (ROM) 53 that stores control programs and data necessary for the CPU 52 to execute the above processing, and a random access memory (ROM) 53 in which the data necessary for the above processing is temporarily read and written. RAM)
54, an output port 55 for outputting the results of the above processing in the CPU 52 to the press control section 33 and outputting a signal to the sensor operation control section 21 for moving the first proximity sensor 20; It is composed of a pass line 56 serving as a path, and a power supply circuit 57 that supplies power to each of the above sections.

Hereinafter, the third part about the bending correction process configured as above will be explained.
This will be explained in detail based on the figures.

FIG. 3 is a flowchart showing the bending correction process executed by the microcomputer 5o.

Note that the numbers in parentheses in the following description represent steps in FIG. 3. When the process is started, the sensor operation control unit 2 is set so that the first proximity sensor 20 is set above the left end 6o of the surface of the flange 2 as shown in FIG.
1 (100). Next, the first proximity sensor 2
0, the distance Xa to the left end 60 of the surface of the flange 2 is measured (110). Subsequently, the sensor operation control unit 2 causes the first proximity sensor 20 to start moving in a predetermined order.
1 (120). The above predetermined order is the order of moving upward along the surface of the flange 2 from the surface left end 60 to the surface right end 61, and is determined by the size of the flange 2 of the axle housing 1, etc. Subsequently, while the first proximity sensor 20 is moving, the first proximity sensor 20 measures the distance to the surface of the flange 2,
The smallest value is set to xb (130). Subsequently, a stop signal is sent to the sensor operation control unit 21 so that the first proximity sensor 20 stops moving (140). Second
62 in the figure represents the first proximity sensor during this stop. Next, the value obtained by subtracting xb from xa measured above is set as the bending X of flange 2 (150).
. Subsequently, a signal is sent to the sensor operation control section 21 to return the first proximity sensor 20 to the normal position (position 63 in FIG. 2) so that it does not overlap the moving space of the breath pressing section 31 (160).

Next, based on the bending X of the flange 2 calculated in step 150, the pressing path wi necessary for straightening the flange 2 is determined.
Calculate Z<170). The pressing distance Z is the distance that the press pressing portion 31 advances in contact with the surface of the flange 2, and has the following relationship with the bending X of the seven flange 2 as shown in the graph of FIG.

Z-AX +BX+C (1) Here, A, B, and C are constants determined by the material, shape, thickness, length, etc. of the axle housing 1. That is, based on the curvature X of the flange 2, the pressing distance Z necessary for straightening the flange 2 can be calculated using the correlation (1) above.

Subsequently, a signal is sent to the press control unit 33 so that the breath pressing unit 31 starts lowering (180). Thereafter, the breather 33 operates, and the breather pressing part 31 descends at a constant speed (second
64 in the figure). Subsequently, the second proximity sensor 40 measures the distance MY from the indicator plate 34 provided on the breath arm 32 (190).

Since the indicator plate 34 is provided at a position where it comes into close contact with the second proximity sensor 40 when the breath pressing part 31 is in the initial state, the descending distance of the indicator plate 34 can be measured. You can know the distance.

Next, it is determined whether the distance Y to the indicator plate 34 measured in step 190 is greater than the sum of the predetermined value Yo, xb measured in step 130, and Z calculated in step 170. Do it (200). Above prescribed 1! Yo is the moving distance of the breath pressing part when the pressing surface of the breath pressing part 31 reaches the moving height H of the first proximity sensor 20, and is measured in advance. If Y is smaller than rNOj, ie YO+Xb+z, in step 20.0, the process returns to step 190, and step 190. Repeat step 200.

On the other hand, in step 200, rYEsJ, that is, Y is Y.

If it is greater than or equal to +Yb+Z, the process can proceed to step 210. Then, a signal is sent to the press control unit 33 to stop the breath pressing unit 31 (210>).

That is, when the breath pressing part 31 contacts the flange 2 (at this time, the measured value of the second proximity sensor 40 is Y).

+
The measured value is controlled so that the breath pressing section 31 is stopped at yo1Xb+Z). Subsequently, a signal is sent to the press control section 33 to return the press pressing section 31 to the initial position (<220), and the water/oil correction process is completed.

One embodiment of the present invention has been described in detail above, and in the bending strain relief device of this embodiment, the first proximity sensor 20 can accurately detect the bending X of the sample, and the above-mentioned detected Pressing distance 2 is calculated using the above formula (1) based on
Since it is configured to press by a pressing distance Z after contacting the 7 langes 2, the bending distortion can be corrected accurately, and as a result, the time required for the work can be shortened.

In addition, as in the above embodiment, instead of measuring the movement amount of the breath pressing part 31 with the second proximity sensor 40 and stopping the breath pressing part 31 when Y becomes YO+Xb+Z, the microcomputer 50 controls the operation of the breath pressing part 31. Yo+X distance
It may be configured to determine b+Z, in which case the second proximity sensor 40 becomes unnecessary.

Further, in the above embodiment, the 7 langes 2 of the axle housing 1
Although this device was used to straighten the bends of objects, it can be used not only for axle housings but also for plates, rods, and all other types of objects.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention can be implemented in various forms without departing from the gist of the present invention.

11.11 As described in detail above, the bending strain correcting device of the present invention has a bending strain detecting means for detecting the degree of bending of the sample, a pressing part for correcting the bending of the sample, and the above-mentioned in a predetermined correlation. a pressing distance calculation means for calculating a pressing distance necessary for correcting the curvature of the sample, in which the pressing part contacts the sample and advances based on the degree of curvature detected by the target distortion detection means; and only the calculated pressing distance; Since the above-mentioned pressing section is configured to include a pressing control means for controlling the pressing of the specimen, it is possible to accurately detect the distortion of the specimen and correct the bending distortion, thereby reducing the work required. It takes less time.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram illustrating the basic configuration of the present invention, and FIGS. 2 to 4 show an embodiment of the present invention.
Fig. 2 is a schematic configuration diagram of one embodiment, Fig. 3 is a flowchart explaining the bending correction processing performed by the microcomputer of one embodiment, and Fig. 4 is a flange bending X and pressing distance Y of one embodiment. FIG. 5 is a schematic groove diagram showing a conventional example using a Taber ruler. Ml...Sample M2...Bending strain detection means M
3... Pressing part M4... Pressing distance outlet means M
5...Press control means 1...Axle housing 2...Flange 20...First proximity sensor 30...Press 31...Brace pressing part 40...Second proximity sensor

Claims (1)

[Scope of Claims] 1. A bending distortion detection means for detecting the degree of bending of a sample; a pressing part for correcting the bending of the sample; and a bending degree detected by the bending distortion detection means in a predetermined correlation. a pressing distance calculation means that calculates a pressing distance necessary for correcting the bending of the sample, in which the pressing part contacts the sample and moves forward based on the pressing distance; and a pressing force that controls the pressing part to press the specimen by the calculated pressing distance. A bending strain relief device comprising: a control means; 2 The predetermined correlation is 2 of the degree of curvature of the sample.
The bending strain correcting device according to claim 1, which is a function of: