JPH0743102A - Probe positioning jig - Google Patents

Abstract

PURPOSE:To arbitrarily select the direction and position of a probe for use and fasten the probe on the basis of the condition of a measurement position as an object for precise measurements undertaken with an indicator or the like. CONSTITUTION:The direction and position of a probe 5 screwed and tightened to an internal thread 3'' at the end of a spindle 3, are arbitrarily selected. Also, a fastening means has a nut 4 with an internal thread 4'' engaged with a somewhat long and fine external thread 3' formed on the end section of the spindle 3. A nut 4 for rotating and lowering the base end 5' of the probe 5 screwed to the internal thread 3'' at the end of the spindle is used to press and fix the probe 5 in the required direction and at the required position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning tool for a stylus, which can be fixed in any direction and position of the stylus used in precision measuring equipment.

[0002]

2. Description of the Related Art Conventionally, it occupies an important position in order to obtain data necessary for quality control and process control in an industrial production site, and is one of the many types of precision measuring instruments applied and utilized. In a dial gauge that uses a measuring element that changes according to the measurement location conditions of the measurement target, a combination of a digital display that does not cause misreading and a bar graph display that allows the change to be visually displayed is both functional. Indicators are widely used as inspection equipment at the production site.

However, when such an indicator is mounted on a stand and is used for precision measurement, the stylus to be used is attached to the female thread at the tip of the spindle by a small screw for mounting the stylus. For example, a general-purpose flat, ball point, conical measuring element, etc. that is used by applying a measuring element at a right angle to an object to be precisely measured, according to conventionally-measured conditions that are generally general, is fastened as it is to the spindle tip. It may be fixed, but since the above general-purpose stylus cannot be used depending on the condition of the measurement point that is required for precision measurement objects whose shapes are diversifying recently, for example, one of the round test stylus There is a probe with the same shape as the corner probe with the tip of the probe slightly bent downward, and this probe is required. By fixedly attached to the spindle tip in the orientation and position, corresponding to the required measurement location conditions, thereby enabling the required measurements. In addition, this probe and the like have the convenience of being applicable and applicable to many cases of precision measurement without the need to replace with another general-purpose probe.

However, the attachment of the probe is such that, for example, when the operator directly faces the display surface of the indicator, the tip of the indicator is slightly bent and the tip of the spindle of the indicator is facing downward. Since it has to be screwed and fixed in place, it is unexpectedly troublesome and troublesome to adjust the position and fixing in this direction by using a washer or the like. Further, in this case, a slight deviation causes the fastening force to be covered to make the attachment and fixation unstable, which may cause an error in measurement accuracy.

[0005]

The problem to be solved by the invention is that all of the mounting and fixing to the tip end of the probe of the indicator in the indicator is performed by screw tightening. The point is that it is not easy to arbitrarily select and fix the orientation and position of the probe.

[0006]

According to the present invention, in order to arbitrarily select and fix the orientation and position of the tracing stylus, a nut mating with a male screw of a little length formed on the tip of the spindle to which the tracing stylus is mounted is used. By pressing the probe from above, the probe is fixed in the required orientation and position. As another method, the most main feature is to fix the measuring element to be screwed to the tip of the spindle at a desired orientation and position by a disc nut that is combined with the mounting thread portion of the measuring element. As a result, the purpose of arbitrarily selecting and fixing the orientation and position of the tracing stylus was realized without impairing the measurement accuracy of the precision measurement under the mounting conditions of the tracing stylus.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 8 are respective explanatory views of an embodiment of the device of the present invention, and FIG. In addition, 1 is an indicator, 2 is a cylinder part, 7 is a support tool, 8 is a stand, 9
Is a measuring table.

Since the subject of the present invention is the mounting method of the measuring element to be used, the description of electronic and mechanical systems such as an indicator will be omitted.

In the embodiment shown in FIG. 1, a fine male thread 3'is formed with a little length at the outer tip of a spindle 3 for screwing a probe 5, and a female thread 4 "which is combined with this male thread 3 '.
Provide the nut 4 of. The outer periphery of the nut 4 is knurled to form an edge 4'having a slight slope at one end of the nut 4 on the tip side of the spindle 3.

With this arrangement, when the small screw 5 "for attaching the tracing stylus 5 is assembled to the female screw 3" at the tip of the spindle 3, the male screw 3'of the spindle 3 rotates and lowers the edge 4'of the nut 4. Is pressed against the base portion 5 ′ of the tracing stylus 5 and pressed, so that the orientation and position of the tracing stylus 5 are arbitrarily selected,
And can be fixed. The slightly sloped edge 4 ′ then allows a stable hit with the base 5 ′ and a distinction between the nut 4 and the base 5 ′.

In the embodiment shown in FIG. 6, a disc nut 6 having a female thread 3 "to be assembled with a small screw 5" for mounting the probe 5 is provided. The outer circumference of the disc nut 6 is knurled to form a slight taper at both ends.

With this arrangement, when the small screw 5 "for attaching the tracing stylus 5 is assembled to the female screw 3" at the tip of the spindle 3, the disc nut 6 is slightly rotated and raised by the small screw 5 ".
By touching and pushing the tip of the spindle 3, the orientation and position of the probe 5 can be arbitrarily selected and fixed. In this case, the taper formation at both ends makes it possible to distinguish the tip of the spindle 3 and the base 5 ′ of the probe 5 from the disc nut 6.

In using the apparatus of the present invention FIG. 1, a small screw 5 ″ for mounting the measuring element 5 to be used is screwed into the female thread 3 ″ of the spindle 3 up to the base portion 5 ′, and then slightly returned so that the measuring element 5 is attached. It suffices to select a desired orientation and position, rotate the nut 4 at the tip of the spindle 3 while lowering the base portion 5 ′ at that position, and lower the nut 4 so that it is pressed against the base portion 5 ′. At this time, if the base 5'is supported so as to be slightly rotated in the opposite direction to the nut 4 side while holding the selected position, the base 5'can be effectively fixed.

In using the device of the present invention FIG. 6, the disk nut 6 to be combined with the small screw 5 "for attaching the measuring element 5 to be used is returned to the base 5'position, and the small screw 5" for attaching the measuring element 5 ". Attach the disc nut 6 to the female thread 3 "of the spindle 3
After screwing to the position and returning it slightly, select the desired direction and position of the probe 5, rotate the disc nut 6 while pressing the base 5'at that position, and raise it to the tip of the spindle 3. Just press it. At this time, if the base portion 5 ′ is supported so as to be slightly rotated in the rotation direction of the disc nut 6 while holding the selected position, it can be effectively fixed.

[0015]

As described above, in the measuring element positioning tool of the present invention, the orientation and position of the measuring element to be screwed and fixed to the spindle tip of the indicator or the like can be arbitrarily selected and fixed. By properly using the tracing stylus to be used according to the measurement location condition required for the precise measurement target, and allowing the measurer to always perform a proper measurement operation directly facing the display surface such as the indicator, There are significant advantages in maintaining measurement accuracy and improving the efficiency of measurement work. In addition, all of the measuring elements and the like used also have the easiness and slack prevention effect when tightening and fixing the screws. It should be noted that the present invention has no reason to be limited to the above embodiment,
For example, even if the configuration of the nut provided on the tip of the spindle or the nut provided on the small screw for mounting the probe has other shapes, the orientation and position of the probe used according to the conditions of the measurement point of the precise measurement target. It is needless to say that the state of arbitrarily selecting and fixing is only required to satisfy the conditions in the above embodiment.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a combined configuration of a nut 4 provided at a tip of a spindle 3 in an embodiment of the device of the present invention.

FIG. 2 is a partial vertical cross-sectional view of the tip of the spindle 3 of FIG.

FIG. 3 is an explanatory view of a nut 4 of FIG.

FIG. 4 is an explanatory view showing a method of using a nut 4 for fixing the tracing stylus 5 at the tip of the spindle 3 in FIG.

5 is an explanatory diagram of a tracing stylus 5 in FIG. 4. FIG.

FIG. 6 is a partial vertical cross-sectional view of a disc nut 6 to be assembled with the probe 5 of FIG.

7 is an explanatory view of the disc nut 6 of FIG.

FIG. 8 is an explanatory view showing a method of using a disc nut 6 for fixing the tracing stylus 5 at the tip of the spindle 3 in the embodiment of the present invention device.

FIG. 9 is an overall perspective view showing a method of using the apparatus of the present invention, which is set on a stand 8 with a measuring table 9 to perform precision measurement.

[Explanation of symbols]

 1 Indicator 2 Cylinder part 3 Spindle 3'Male screw 3 "Female screw 4" Nut 4'Edge 4 "Female screw 5 Measuring element 5'Base 5" Small screw 6 Disc nut 7 Support tool 8 Stand 9 Measuring table

Claims (2)

[Claims] 1. A means for arbitrarily selecting and fixing the orientation and position of a tracing stylus 5 used by a measurer to directly face the display surface of an indicator 1 under the condition of a measuring point of a precise measurement target,
A male screw 3'having a small length and formed on the outer front end of the spindle 3, a nut 4 to be mated with the male screw 3 ', and an edge 4'having a slight slope at one end of the nut 4 are provided. Measurement in which the base 5'of the probe 5 which is screwed to the section is pressed by the edge 4'of the nut 4 to select and fix the required orientation and position of the probe 5. Positioning tool for children. 2. A desired orientation of the tracing stylus 5 which is equipped with a disc nut 6 which is fitted to a mounting small screw 5 ″ provided on the base 5 ′ of the tracing stylus 5 and which is screwed to the tip of the spindle 3. The position locating tool for a probe according to claim 1, wherein the position and the position are selected and fixed.