JPH0594749U - Testing machine for fine wire - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide a testing machine capable of measuring various characteristics when a thin wire is twisted. [Structure] A holding part 2 for holding both ends of a thin wire 1, a load applying part 46 for applying a predetermined load to the thin wire 1, a twisting part 3 for twisting the thin wire 1, and a twisting part 3. Twisted wire 1
And a twisting torque measuring unit 5 for measuring the twisting torque, and a displacement measuring unit for measuring the axial displacement of the thin wire 1 when a desired load is applied to the thin wire 1. 6 and a load relaxation section 43 for preventing a sudden load from being applied to the thin wire 1 when a predetermined load is applied to the thin wire 1 by the load applying section 46.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thin wire testing machine capable of measuring various characteristics of a thin wire.

[0002]

[Problems to be solved by conventional techniques and devices]

 In recent years, with the miniaturization of mechanical parts and the miniaturization of electronic parts, the demand for ultrafine wire rods made of new materials, spring materials, precious metals, heavy metals, etc. has increased. There has been an increasing demand for measuring mechanical properties of torsion. Conventional testers that know the characteristics of ultrafine wire only measure the number of twists until the test piece (extrafine wire) breaks. For example, the twisting torque during twisting and the axial direction of the test piece can be measured. The displacement could not be measured.

The present invention is capable of measuring the number of twists, twisting torque, axial displacement, etc. of a test piece and is capable of applying an axial load to the test piece without impact. The technical problem is to provide a testing machine for use.

[0004]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

A holding part 2 for holding both ends of the thin wire 1, a load loading part 46 for applying a predetermined load to the thin wire 1, a twisting part 3 for twisting the thin wire 1, and a twisting part 3 And the twisting torque measuring unit 5 for measuring the twisting torque, and the axial direction of the thin wire rod 1 when a desired load is applied to the thin wire rod 1. A displacement measuring unit 6 for measuring displacement and a load relaxation unit 43 for preventing a sudden load from being applied to the thin wire 1 when a predetermined load is applied to the thin wire 1 by the load applying unit 46. It is related to the test equipment for wire rods.

[0006]

[Action]

 Both ends of the test piece (thin wire 1) are held by the holding section 2, a predetermined load is applied to the test piece by the load applying section 46, and the test piece is twisted by the twisting section 3. The twisting torque measuring unit 5 can measure the number of twists and the twisting torque until the test piece breaks, and the displacement measuring unit 6 can measure the axial displacement until the test piece breaks. When the load is applied to the test piece, the load is not suddenly applied because the load relaxation section 43 exists.

[0007]

【Example】

 The drawings illustrate one embodiment of the present invention and are described below.

The gripping part 2, the twisting part 3, and the twisting number measuring part 4 will be described with reference to FIGS.

An upper support plate 8 is provided on an upper end of a support 7 arranged in the main body 37, and a chuck as a holding section 2 for holding the upper end of the thin wire 1 on the left side of the upper support plate 8 in FIGS. The chuck support 9 provided with 2'is fixed.

A rotating shaft 10 is inserted into the chuck support 9, and a chuck 2 ′ is connected to a lower portion of the rotating shaft 10 via a chuck mounting portion 11 that rotates together with the rotating shaft 10. Further, a pulley 12 is fixed to the upper part of the rotating shaft 10.

On the other hand, a drive motor 13 with a speed reducer hangs down in the center of the upper support plate 8, and a drive shaft 14 of this drive motor 13 projects upward from the upper support plate 8 and The pulley 15 is fixedly attached.

Further, a rotary shaft 16 is projected in the vicinity of the drive shaft 14, a tension pulley 17 is fixed to the rotary shaft 16, and the rotary shaft 16 has a rotational speed and a rotational speed. An encoder 18 that recognizes the corner is connected.

Reference numeral 19 is a bearing, and 20 is a belt suspended around the pulleys 12 and 15 and the tension pulley 17.

The holding section 2, the twisting torque measuring section 5, the displacement measuring section 6, the load relaxation section 43, and the load applying section 46 will be described with reference to FIGS.

A lower support plate 21 that moves up and down with respect to the support column 7 is provided below the support column 7, and a rotary cylinder 25 is provided on the left side of the lower support plate 21 in FIG. 5 via a bearing 22. A ball spline 23 is provided in the rotary cylinder 25, and a ball spline shaft 24 is inserted in the ball spline 23. A support ring 26 is fixed to the lower end of the rotary cylinder 25, a flexible plate 27 is fixed to one side surface of the support ring 26, and the tip of the flexible plate 27 is fixed to the lower support plate 21 by a load cell 28. Is linked to.

A chuck 2 ″ that holds the lower end of the thin wire 1 is provided above the ball spline shaft 24, and a weight mounting rod 36 is extended below the ball spline shaft 24, and the weight mounting rod 36 is provided. An appropriate number of weights 29 are attached to the.

Reference numerals 30 and 45 are stoppers, and 44 is a ring member for pressing the stopper 45.

A displacement detector 33 (differential transformer) is provided on one side of the lower support plate 21 to electrically detect a sliding amount of the operating rod 34 by sliding an operating rod 34 described later inside. A suspension rod 31 is hung down together, and a swing rod 32 is pivotally attached to the lower end of the suspension rod 31.

One end (the right end in FIG. 6) of the swing rod 32 supports the bottom of the weight mounting rod 36, and the other end of the swing rod 32 has the displacement detector 33 (differential An operating rod 34 that slides inside the transformer is provided upright.

Reference numeral 35 is a balance weight, which balances the force due to the mass of the measurement system to the thin wire 1 without the weight 29.

As shown in FIG. 7, the lower support plate 21 is provided so as to be movable up and down with respect to the support column 7 by a rotating handle 40 having a clutch mechanism 39 incorporated therein. Reference numeral 41 is a sprocket gear, 42 is a chain, 47 is a meshing portion, 48 is an anti-shrinkage ridge, and 49 is a chain mounting portion.

Reference numeral 38 is a window that allows the lower support plate 21 to move up and down.

Since this embodiment has the above-mentioned configuration, the following operational effects are exhibited.

A thin wire 1 (test piece) is set between the chuck 2 ′ and the chuck 2 ″, an appropriate weight 29 is set on the weight mounting rod 36, and an appropriate tensile force is applied to the thin wire 1.

When setting the weight 29, in order to prevent a sudden load from being applied to the thin wire material 1, the rotary handle 40 is pulled to release the meshing of the meshing portion 47, and the rotary handle 40 is rotated. Then, the lower support plate 21 is raised, the stopper 45 is pressed by the ring member 44 to slightly slacken the thin wire 1, and the turning handle 40 is gradually turned to set the weight 29. Therefore, it is prevented that the thin wire 1 is subjected to a sudden load due to the weight 29.

When the turning handle 40 is released after the setting of the weight 29 is completed, the turning handle 40 is pushed by the anti-compression line 48, the engaging portion 47 is engaged, and the lower support plate 21 cannot be moved up and down.

When the pulley 12 is rotated via the belt 20 by the driving of the drive motor 13, the rotating shaft 10 is rotated, and thus the chuck 2 ′ is also rotated, and the thin wire 1 is twisted. The chuck 2'may be rotated continuously in one direction or may be rotated forward and backward repeatedly.

By the rotation of the chuck 2 ′, a twisting force is applied to the thin wire 1, the chuck 2 ″ is also rotated, and the rotating cylinder 25 and the support ring 26 are also rotated. The weight 29 applies a tensile force. The thin wire 1 that has been twisted and has been stretched is stretched and breaks at a certain point.

When the thin wire 1 extends, the ball spline shaft 24 slides downward in the ball spline 23, the bottom of the weight mounting rod 36 is pressed, the swing rod 32 swings, and the operating rod 34 rises. To do.

When the fine wire 1 breaks at a certain point, the chuck 2 ″ descends, but the stopper 45 contacts the ring member 44, so that the chuck 2 ″ is restricted from descending.

The data when the thin wire 1 breaks is measured as follows.

Twist Count and Twist Angle These are measured by the encoder 18.

Twisting Torque The force (twisting torque) for rotating the support ring 26 is the distance a from the center of the support ring 26 to the flexible plate 27 and the rotation of the support ring 26 as shown in FIG. And the tensile force P of the flexible plate 27 according to

The load applied to the thin wire 1 is measured by the weight 29.

Expansion and contraction of the thin wire 1 A distance b between the ball spline shaft 24 and the suspension rod 31 (see FIGS. 1 and 6) and a distance c between the suspension rod 31 and the working rod 34 (see FIGS. 1 and 6) If the sliding amount of the operating rod 34 in the displacement detector 33 is known by setting and in advance, the axial displacement (extension) when the fine wire 1 is twisted is converted by converting the ratio b: c. And shrinkage).

[0036]

[Effect of the device]

 Since the present invention is configured as described above, it is possible to accurately determine the number of twists, the twisting torque, the axial displacement, etc. until the test piece under a predetermined load is loaded (the load is not abruptly loaded). It becomes a testing machine for wire rods.

[Brief description of drawings]

FIG. 1 is a front view of this embodiment.

FIG. 2 is a plan view of a twisting portion of this embodiment.

FIG. 3 is a side sectional view of the above.

FIG. 4 is a plan view of a main part of this embodiment.

FIG. 5 is a side sectional view of a main part of this embodiment.

FIG. 6 is a perspective view of a main part of this embodiment.

FIG. 7 is a front sectional view of a main part of the present embodiment.

[Explanation of symbols]

 1 Fine wire 2 Holding part 3 Twisting part 4 Twisting frequency measuring part 5 Twisting torque measuring part 6 Displacement measuring part 43 Load relaxation part 46 Load applying part

Claims (1)

[Scope of utility model registration request] 1. A holding part for holding both ends of a thin wire, a load applying part for applying a predetermined load to the thin wire, a twisting part for twisting the thin wire, and a thin wire twisted by the twisting part. Of the number of twists of the wire, a twisting torque measuring unit for measuring the twisting torque, a displacement measuring unit for measuring the axial displacement of the thin wire when a desired load is applied to the thin wire, and the load A tester for a fine wire rod, comprising a load relaxation portion for preventing a sudden load from being applied to the fine wire rod when a predetermined load is applied to the fine wire rod by the load portion.