JP2518729Y2 - Tool measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an improvement in a measuring device for measuring the dimension of a cutting edge of a tool.

[Conventional technology]

For a tool such as a drill or an end mill, it is necessary to measure the diameter and height of the cutting edge portion of the tool in advance, and control the machine tool based on the data to perform predetermined machining.

Therefore, conventionally, an indirect method is used in which a jig manufactured according to the shape of the tip of the drill is fitted and the dimensions are measured with the jig interposed. In this case, the jig for measuring the tip and the jig for measuring the diameter must be replaced every time the tool such as the drill changes.
The measurement work is complicated, and since a jig is interposed, it is difficult to accurately measure the characteristics of the tool.

In order to solve such a problem, the present inventors have proposed X.
Two dial gauges that can direct the contact in each of the Y directions are provided orthogonally. For example, bring both contacts closer to the cutting edge and shoulder of the drill, and read the dial gauges to determine the diameter of the drill. The position (dimension) of the cutting edge was measured.

[Problems to be solved by the device]

In the method of measuring the dimension of the cutting edge of a tool such as a drill, the method of providing a jig on the cutting edge of this tool requires preparing the jig for each tool and It is extremely difficult to exactly match.
Also, the method of using two dial gauges as a pair in the X and Y directions cannot be brought close to each other unless the tips of the contacts are made quite small, even if they are brought close to each other to the maximum extent. It was difficult to measure one point completely.

Also, in Japanese Utility Model Publication No. 56-43683, a sliding table having a groove for mounting a dial gauge is provided on one side of a base, and a holding table facing the sliding table and rotatably supporting a device under test is provided on the other side. A dial gauge is provided on a stand set up on the sliding board via an arm, and a dial gauge orthogonal to the dial gauge is provided on another stand to measure an object to be measured from two orthogonal directions. A device has been proposed.

This measuring device adjusts and fixes a stand, an arm, one dial gauge, and another stand and dial gauge for one object to be measured, and measures in both X and Y directions or vertical and horizontal directions. Is to do.

However, in this apparatus, it is necessary to adjust and fix the two dial gauges at predetermined positions each time the object to be measured is replaced, and this operation is complicated and not reproducible. Therefore, it is not suitable for measurement of an apparatus in which the object to be measured is frequently exchanged.

In addition, since the two dial gauges are fixed at predetermined positions for measurement, the tip of the tool can
When measuring from both Y axes, or both vertical and horizontal axes, and then performing the same measurement after exchanging the DUT, the measuring end of one dial gauge should be the same as the measuring end of the other dial gauge. This hinders the movement, and it is necessary to move one dial gauge, and there is a problem that one point cannot be accurately measured from both X and Y.

That is, in the conventional measuring apparatus, when two dial gauges for measuring the X and Y directions are set for one measured object, the set state collapses when another measured object is measured. In addition to the drawback that it requires resetting by a complicated operation for another object to be measured,
The problem is that while using one dial gauge, the other dial gauge cannot be retracted in a reproducible state to widen the operation surface. It is an object of the present invention to provide an improved device in which two dial gauges capable of making measurements by projecting contacts are arranged, and which can measure one point by using two dial gauges.

[Means for solving the problem]

The measuring device for a tool according to the present invention for achieving the above object comprises a bracket fixed to the measuring device, the arm part being extendably supported, and the first dial gauge fixed to the tip of the arm part. The arm is pivotally supported by a pin on the tip of the rotating metal fitting fixed to the arm so as to rotate in a plane parallel to the moving surface of the arm portion, and the arm can be fixed to the rotating metal fitting. At the tip of the arm, the first
Fixing a second dial gauge orthogonal to the dial gauge, moving the first dial gauge back and forth with respect to the object to be measured supported by the measuring device 1, and bringing the contactor into contact with the second dial gauge. The dial gauge is configured to rotate the arm so that the contactor comes into contact with the object to be measured.

[Action]

In the embodiment, the radial dial gauge is rotatably supported by a rotating metal fitting, and when the contact of the dial gauge interferes with the operation of the height dial gauge, the radial dial gauge is Since the rotating metal fitting that supports the gauge can be rotated and retracted, it is possible to obtain accurate measurement results by operating the height direction dial gauge without being disturbed by other members.

This effect is the same when the dial gauge in the height direction is rotatably supported by the rotating metal fitting.

Particularly, in the present invention, two dial gauges are arranged in the X and Y directions or both the vertical and horizontal directions with respect to the bracket fixed to the main body of the measuring device, and the positions of the two dial gauges are based on this bracket. The two dial gauges can be removed by removing this bracket from the main body of the measuring device when removing the DUT, and when using this dial gauge again, It is possible to accurately position the two dial gauges in the X and Y directions, or in the vertical and horizontal directions simply by attaching the dial gauge to the original position of the measuring device.
In other words, it is possible to quickly and accurately measure one point in the X and Y directions or in the vertical and horizontal directions by any number of times of setting operation of the dial gauge.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of the blade measuring device, FIG. 2 is a side view, FIG. 3 is an explanatory view of the operating state of one dial gauge, and FIG.
The figure is a front explanatory view of the measurement state.

The measuring device according to the present invention is a measuring device 1 such as a presetter.
(Or a machine tool) or a support base, which is used for the bracket 2
On the other hand, the height direction dial gauge 3 (first dial gauge) and the radial direction dial gauge 4 (second dial gauge) are provided as a pair.

The height direction dial gauge 3 is slidably attached to the bracket 2 and fixed to the tip of the arm portion 5. The radial dial gauge 4 is fixed to the rotary fitting 6 via the member 12 fixed to the bracket 2. An arm 9 is rotatably supported at one end of the rotary fitting 6 via a bearing 8 provided around the pin 7. The arm 9 is provided in a groove 14 provided in the rotary fitting 6. Configured to mate. The radial dial gauge 4 is fixed to the tip of the arm 9, and the rotary fitting 6
As shown in FIG. 2, the arm 9 is fitted into the recessed groove portion 14 to position the dial gauge 4 fixed to the arm 9 at a predetermined position, and fitted into the rotary fitting 6 shown in FIG. The dial gauge 4 fixed to the arm 9 by tightening and fixing the arm 9 with the fixing knob 13.
Is also positioned and fixed.

When measuring the radial dimension of the tool such as the drill 15, the arm 9 is rotated toward the rotary fitting 6 side as shown by the solid line in FIG. 3, and the arm 9 is fitted into the groove of the rotary fitting 6. Then, as shown in FIG. 1, the arm 9 is clamped and fixed by the fixing knob 13 to hold the radial position of the dial gauge 4 at a predetermined position.

Then, the contact 4a is brought into contact with the portion to be measured of the drill 15 to read the instruction of the radial dial gauge 4. Also,
When reading the height direction dial gauge 3, the height direction dial gauge 3 is easily operated by rotating and retracting to the position 4'shown by the chain line.

Referring to FIG. 4, a drill using the device according to the present invention
When measuring the height of the tip 15a of 15
By loosening (Fig. 1) and rotating the radial dial gauge 4 in the state of the solid line in Fig. 3 to the position 4'of the chain line, it does not interfere with the vertical movement of the height dial gauge 3. To retreat.

Then, the arm 5 is moved back and forth, and the measuring device 1 is moved up and down to drill the contact 3a of the height direction dial gauge 3.
The tip 15a of 15 is contacted to read the instruction. In this case, since the radial dial gauge 4 is retracted to the position 4'shown by the chain line in FIG. 3, the contactor 3a can be operated without any problem.

When the radial dial gauge 4 is operated, the height dial gauge 3 is retracted together with its arm portion 5, and the measuring device 1 is retracted so that the radial dial gauge is in the state shown by the chain line in FIG. The gauge is rotated to the position of the solid line 4, the arm 9 is fitted in the concave groove portion of the rotary fitting 6, and the arm 9 is tightened and fixed by the fixing knob 13 of FIG. 1 to fix the radial dial gauge 4 at a predetermined position. To position.

Then, drill the contact 4a of the radial dial gauge 4 with a drill 15
This radial dial gauge 4 by contacting the outer diameter part 15b of
Read the instructions. In this way, the two dial gauges 3 and 4 can be operated while the other dial gauge is retracted so as not to interfere with the measurement when measuring one dial gauge.

[Effect of device]

In the tool measuring device according to the present invention, an arm 5 is extendably supported by a bracket 2 which is fixed to the measuring device 1, and a first dial gauge 3 is fixed to the tip of the arm 5 and is attached to the bracket 2. The arm 9 is pivotally supported by a pin 7 on the tip of the fixed rotating metal fitting 6 so as to rotate in a plane parallel to the moving surface of the arm portion 5, and the arm 9 can be fixed to the rotating metal fitting 6. Further, the first end is attached to the tip of the arm 9.
Second dial gauge 4 orthogonal to the dial gauge 3 of
Is fixed.

Then, the first dial gauge 3 is moved back and forth with respect to the object to be measured supported by the measuring device 1, and its contactor 3a.
And the arm 9 of the second dial gauge 4 is rotated to bring the contact end 4a of the second dial gauge 4 into contact with the object to be measured. it can.

a) One dial gauge, especially the second one that measures in the radial direction
The dial gauge 4 of the second dial gauge 4 is rotatably supported via the rotary fitting 6, and the contact 4a of the second dial gauge 4 interferes with the operation of the first dial gauge 3 for measuring the height direction. In such a case, since the rotating metal fitting 6 supporting the second dial gauge 4 for measuring the radial direction can be rotated and retracted, the first dial gauge 3 for measuring the height direction can be replaced with another member. Accurate measurement results can be obtained by operating without interruption.

b) With respect to the bracket 2 fixed to the measuring device 1, the two first and second dial gauges 3 and 4 in the X and Y directions or in the vertical and horizontal directions are supported so as to be retractable so as not to interfere with each other. Therefore, once the positions of these dial gauges 3 and 4 are accurately adjusted, the bracket 2 itself can be detached from the measuring device 1 and attached again due to reasons such as the attachment and detachment of the object to be measured. However, the position of the first and second dial gauges 3 and 4 in the X and Y directions set previously is not broken, and the object to be measured can be accurately measured.

c) In the case of the conventional measuring device, it was necessary to make the contacts small so that the contacts of both dial gauges could come close to or contact each other as much as possible. It is possible to accurately measure the dimension of the tool, which is the object to be measured, regardless of the size of the child.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view of a tool measuring device, and FIG. 2 is a side view showing a part of the measuring device. FIG. 3 is a plan view showing a rotating state of the dial gauge supported by the rotary fitting, and FIG. 4 is a front view showing a state in which the height of the drill is measured by the height direction dial gauge. 1 ... Measuring device, 2 ... Bracket, 3 ... Height dial gauge, 4 ... Radial dial gauge, 5 ... Arm, 6 ... Rotating metal fitting, 7 ... Pin, 8 ... Bearing, 9 ... Arm, 12 …… Positioning member 13 …… Fixed knob, 14 …… Mating part 15 …… Tool (drill).

Claims (1)

(57) [Scope of utility model registration request] 1. A rotating metal fitting 6 fixed to the bracket 2 by supporting an arm 5 to a bracket 2 fixed to a measuring device 1 so as to be extendable and contractible, and fixing a first dial gauge 3 to the tip of the arm 5. An arm 9 is pivotally supported by a pin 7 at the tip of the arm so as to rotate in a plane parallel to the moving surface of the arm portion 5,
This arm 9 can be fixed to the rotating metal fitting 6,
Further, the first dial gauge 3 is attached to the tip of the arm 9.
The second dial gauge 4 orthogonal to the is fixed, and the dial gauge 3 is moved back and forth with respect to the object to be measured supported by the measuring device 1 to bring the contact 3a into contact therewith, and the dial gauge 4 is moved to the arm. A tool measuring device in which the contactor 4a can be brought into contact with or retracted from the object to be measured by rotating 9.