JPH01161102A - Chamfering size measuring instrument - Google Patents

Abstract

PURPOSE:To numerically read the chamfering size of a chamfered part from variation in the indication value of a lever type dial gauge by providing a sample base to one measurement part of a slide type length measuring instrument and the lever type dial gauge to the other measurement part. CONSTITUTION:The center of a reference surface 11a provided on the jaw 3a of the slider of digital slide calipers 1 is aligned with the center of the measuring instrument 6a of the lever type dial gauge 6 and the value indicated by the slide calipers 1 is read. Then a sample 12 is mounted on the sample base 15 so that its one end surface abuts on the reference surface 11a. Then, while measuring element 6a of the gauge 6 provided to the main scale 2 of the calipers 1 is brought into contact with a surface of the sample 12 to be measured, it is scanned crossing the reference surface 11a. Then the value indicated by the calipers 1 where an increase in the indication value of the gauge 6 stops is read. The difference between this read value and the read value before the measuring element 6a is slid indicates the chamfering size of the chamfered part of the sample 12. Consequently, the chamfering size of the chamfered part is read directly and numerically.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a chamfer dimension measuring device suitable for use in measuring dimensions of, for example, chamfering the inner diameter portion of an inner ring or the chamfering the inner diameter portion of an outer ring of a bearing.

<Prior art> Conventionally, a projector has been used as a device for measuring the chamfer dimensions of a chamfered portion of a bearing, and it projects and records the outline of the chamfered portion of a sample to be measured, and reads the value from the recording paper. The chamfer dimensions mentioned above are measured.

<Problems to be Solved by the Invention> However, with the above projector, the measurement results are first recorded as an image on a recording paper, and then the recorded image cannot be read as a numerical value (it must be 1, but it cannot be directly read as a numerical value). There is a problem that it is troublesome because it cannot be read with a computer.

In addition, with a projector, the projected outline may be blurred, so it may be difficult to accurately record measurement results.Therefore, there is also the problem that it is not possible to accurately measure the position of the starting point of the chamfer. There is also the problem that the projector cannot project the inner diameter of the bearing ring, so the bearing ring must be cut.There is also the problem that the projector cannot be easily moved.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a chamfer dimension measuring device having a simple and inexpensive structure, which can directly read the chamfer dimension of a chamfered part numerically, and can also measure the chamfer of an inner diameter part without cutting or the like. There is something for every thing you do.

<Means for solving the problems> 1-.To achieve the stated purpose, the chamfer dimension measuring device of the present invention (as illustrated in FIGS. 1 and 2, a pair of measurements made by sliding each other) A sliding length measuring instrument 1 for measuring the length between sections 2a and 3a; a sample stand I5 having a
The above-mentioned J is installed on the other measuring part 2a of the measuring device I, and the chamfered part of the sample 12 is brought into contact with the above-mentioned reference 11a.
It is characterized by being equipped with a lever-type dial cane 6 that intersects with the measuring surface 1a and contacts the measuring tip 6a.

<Function> First, align the center of the measuring point 6a of the lever type dial gauge 6 with the reference surface installed on one measuring part 3a of the sliding type a + length gauge and the center of the measuring point 6a of the lever type dial gauge 6 installed on the other measuring part, and slide it. Read the value indicated by the formula length measuring device 1. Then, as shown in Fig. 3, the position of the starting point of the chamfer of the chamfered part of the sample is read instead of the direct measurement.Next, Place the sample 12 having a reference surface on the sample stand 15 so that one end surface of the sample 12 is in contact with the surface 11a of the base 7jJ. Measurement point 6a of lever-type dial cane 6 is installed on 2a.
While touching the surface to be measured of the sample 12 placed on the sample stage 15, scan gently in the direction intersecting the reference surface 11a, that is, from the end surface of the sample in contact with the reference surface 11a to the other end surface. I will do it. At this time”
The indicated value of the type 1 dial gauge 6 increases as the scanning length of the measuring stylus 6a becomes longer.

Next, the value indicated by the slide type length measuring device l at the position where the indicated value of the lever type dial cane 6 stops increasing is read. As a result, every time you read the position of the end point of the chamfer of the chamfered part of the knob 12, the difference between this reading value and the value of the reading before sliding the probe, that is, the starting point of the chamfered part. The difference between the position and the end point indicates the chamfer dimension of the chamfered portion of the sample do. Therefore, the chamfer dimension of the chamfered portion can be directly read numerically.

45. Scan the measuring point fia in the opposite direction. Starting from the end point in item 1, read the indicated value of the sliding length measuring device 1 from the point where the tire arc cane 6 or changed to the reference surface 11a and chamfer. The dimensions and shape of the part may also be determined.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

In Fig. 1.2, it is an I+J slide length measuring device, which is a digital length measuring device, and has a pair of measuring parts.

One measuring section is installed on the main scale 2.
It has a measurement part 2c that is orthogonal to the base W, fL end 2b of the main scale 2, as well as the length measurement direction. In addition, the other measuring section is installed on the slider 3 (J), and has a measuring surface 3b orthogonal to the length measurement direction. It is said that it should be slidably fitted on the outside and guided by the end face 2b of the bracket to make it slide accurately. The display section 3c has a reset button 3d for resetting the display on the display section 3c, and a feed wheel 3e for sliding. The length between the measurement parts of the measuring section 2C and the measurement surface 2C of the main scale 2a and the slider 3
The length between the measurement surfaces 3b and 3a is displayed on the display section 3C.

The main shaft 2a is attached to the first part 5 by a screw 4.4, which is shaped like a 17-shaped plate and has a thick walled part 5a at one end.
is installed (). At this time, ``Second Book 1 (=t
k1 part 5tj, measuring part 2c of the main scale 2a
Then, each time the first take (・j+J) is brought into contact with the abutting end surface 5b of the abutting recess provided on the lower surface of the part 5, it is taken accurately in the length measurement direction. 2aLl, its first example (in the thick part 5a of J part 5,
A 4-lever type dial gauge with a measuring point 6a is taken as one piece by a method not shown (J, and the axis 6b of the measuring point 6a of the 1 lever type dial gauge 6 is horizontal). When in this state, make sure that the measurement direction of the digital caliper I matches the correct direction (1: -)!
! As a result, the measuring stylus 6a, which is made of a highly accurate spherical surface, moves within a plane parallel to the plane that includes the end face 2b of the main scale 2. The measuring head 6ai; l, the sample hair ring 49 has a small chamfer, and the deflection angle of the shaft 6b of the measuring head 6a is 1.
Because the minute wheel is small, the measuring tip 6a actually moves in an arc around the fulcrum, but approximately it moves in a straight line perpendicular to the plane of the paper.
Please tell me what you think. Therefore, the error in measuring the length in the direction perpendicular to the plane of the paper by the tire cage 6 due to the difference between the arc movement and the linear movement can be ignored.

In addition, the above-mentioned first take-out ζ1 (" part 5 is placed in the lever-type dial gauge 6 so that the IC is facing in the same direction as the display section 3c of the digital caliper 1. There is.

According to Sufita's Jiyo 3a ('', Nen 10.10, the second inspection i-1 has an inverted shape and has a reference surface 11a at one end.
The component 11 is mounted (J. At this time, the second removed component 11 is also mounted on the first mounting surface 31 of the slider slide 3a, as in the case of the J component 5). 2
By abutting the abutting end surface 11c of the abutting recess provided on the - face of the thick walled part 111) of the part 11, the part 11 can be accurately taken in the measuring direction of the digital caliper 1.
Get J. Therefore, the 3a of the slider described in -1-1
Then, place this second part 1] υ part 11 on one end of the base (with the surface 11a being a plane perpendicular to the measuring direction of the digital caliper 1). The measuring head 6a in the homogeneous state of the gauge 6 is firmly supported in a plane perpendicular to the direction of the center line of the foot 6b. In the range in which the measuring point 6a of the type dial gauge 6 moves, the measuring point 6a and the reference surface 11a themselves are provided with a part II (1) in the central two parts so as to prevent interference between the measuring point 6a and the reference surface 11a. 5. On the reference surface 11a, which forms a side surface like a tuning fork, in order to hold the sample 12 which is the object to be measured, two slopes 13a are provided on the upper surface of the reference surface 11a, which are equally inclined by 45 degrees to the left and right in a block shape. , set I3b to the sample base part 13, so that the height can be adjusted downward. and the reference plane 1 of the second mounting tJ part 11
1a Teta Mburudai 15 should be completed on t-14. ,Also,
The second handle attached to the above-mentioned Sufita 3a]
(When the part 11 comes into contact with the stepped part 1.Ie or the first attachment attached to the main part 2a of the part 5, it will be more than 21 times larger than the main part 2a. Let's move closer to each other and slide 4" in the lower and lower directions. We won't fall in love (
)1C1 stepped portion 11e is set (J), and with the stepped portions in contact with each other, on the reference surface 11a communicating with the main scale fitting 3a, 1 □ is installed along with the main scale fitting 2a.
4' The center of the measuring tip fia of the lever type dial game 76 is placed in the horizontal state.

1. 4X11 determination of the chamfer size of the inner diameter portion of the bearer using the chamfer size measuring device configured as described above (hereinafter, it is carried out as shown in -V).

First, turn the feed wheel 30 of the slider 3 of the digital caliper 1 in the opposite direction to the arrow shown in the figure, thereby moving the slider 3 to the second slot (-1 IJ component 11 step part 11c) that communicates with the slider 3. At t, when the main lever 2a comes into contact with the communicating step 5c and stops, the slider 3a approaches the main lever 2a and slides in the downward direction.

Then, the center of the measuring tip 6a of the 4-column type dial gauge 6 and the center of the measuring element 6a of the dial gauge 6 communicate with the 7th position 2a of the main scale.
Match the reference surface 11a of the sample stage 15 that communicates with "a".Next, in this state, reset the display (1-1) on the display section 3c of the slider 3 of the digital caliper 1 by pressing the button 3d. Next, the sample 12,
Introducing the inner circle of Zunawaji Hair Link. As a result, the direction of the groove (1) and the direction of the rotating shaft of the bear link 12 are made to coincide with each other. Furthermore, one end surface of the hair ring 12Q) is brought into contact with the base 11a of the sample stage 15 and fixed by a device not shown in the drawings 1-2. At this time, the height of the sample stand 13 is adjusted downward so that the inner peripheral surface of the inner ring, which is the surface to be measured of the bearing, and the center line of the measuring head of the lever type dial cane 6 match. Needless to say, it is. Since the bearing is thus accurately fixed to the sample stage 15, the measurement of this chamfer dimension is performed correctly within a plane that includes the rotation axis of the hair link. On the other hand, at this time, the display section 3c of the slider 3 of the digital caliper 1 shows that the center of the measuring tip 6a of the lever-type dial gauge 6 and the reference surface lea of the sample stage 15 are aligned, and that one end surface of the bearing The reference plane 11
Since a is also made to match, the position of the starting point 12a of the chamfer of the chamfered portion shown in FIG. 3 is displayed, and its display value (J has already been reset) is zero. As a result, the end point 12b of the chamfer described below
The value displayed on the display section 3c of the tintal caliper 1 corresponding to , directly indicates the chamfer dimension. Next, the feed wheel 3e of the slider 3 is slowly turned in the direction of the arrow A shown in the figure, and the slider 3 is slid in a direction in which the slider's slide 3a is separated from the main scale's slide 2a. Then, since the slider 3 is connected to the sample stand 15 via the slider jaw 3a, it is difficult to remove it from the sample stand 15. By moving in the measurement direction with respect to the measuring point 6a of the lever type dial gauge 6, the measuring point 6a is scanned relative to the measuring point 6a.At this time, the indicated value on the scale plate 6c of the lever type dial cane 6 is The length increases in proportion to the length of the slider 3.Then, the slider 3 further slides the contact point 6a as shown in Figure 3.
When the end point +2b of the chamfer reaches the contact point of , the indicated value on the scale plate 6c of the lever type dial gauge 6 reaches its peak, and even if it is further slid, the indicated value does not increase and remains a constant value. This scale plate 6c of lever 1 type dial gain 6
The value displayed on the display section 3c of the tintal caliper 1 at the moment when the indicated value reaches its peak is the contact point of the measuring tip 6a of the lever-type dial gauge 6, or the end point 1 of the chamfer of the chamfered section.
2b, the value displayed on the display section 3c of the digital caliper 1 indicates the chamfer size of the inner circumferential surface of the inner ring of this bearing.

In this way, this chamfer dimension measuring device can measure chamfer dimensions in a form that allows the measurement results to be directly read.

In the above embodiment, the main scale of the digital caliper 1 is
Place the lever type dial cane 6 on a and the slider 3a.
The sample stand 15 was installed on each of the main scale side 2a, and the sample stand 15 was placed on the slider side 3a.
A lever-type dial cane 6 may also be installed.

<Effects of the Invention> As is clear from the above, the chamfer dimension measuring device of the present invention has a sliding length measuring instrument that has a pair of measuring parts that slide against each other, and a standard that is orthogonal to the sliding direction. A lever-type dial cane was installed on the other measuring part of the sample stand with a surface, and the horizontal dimension was measured with a slide-type length measuring device, and the vertical dimension was measured with a lever-type dial cane. The start or end point of the chamfer is detected by changes in the reading on the lever-type dial gauge.
You can read the chamfer dimensions of the chamfered part numerically. In addition, since the chamfer dimension measuring device of the present invention is composed of a slide-type length measuring device and a lever-type dial cane, it can be made into a simple and inexpensive device, and can be carried.

[Brief explanation of the drawing]

Figure 1 (J) A plan view of an embodiment of the chamfer dimension measuring device of the present invention, Figure 2 is a front view of Figure 1, and Figure 3 is the relationship between the chamfer of the sample and the measuring head of the lever-type dial gauge. 1. Digital caliper, 2. Main scale, 2a. Main scale position, 3. Slider, 3a. Slider position, 5. 1st removal part, 6. Lever. Type dial cane, 6a Measuring head, II・
・Second take (=t l-1 part, Ila... reference plane, I
2 samples, 15 sample stands.

Claims (1)

[Claims] (1) A sliding length measuring device that measures the length between a pair of measuring sections that slide against each other, and a reference surface that is provided on one measuring section of the length measuring device and is perpendicular to the sliding direction of the measuring section. and a lever-type dial gauge that is provided on the other measuring part of the length measuring device and that brings a measuring point into contact with the chamfered part of the sample that is brought into contact with the reference surface so as to intersect with the reference surface. A chamfer dimension measuring device characterized by: