CN218601022U

CN218601022U - Torsion testing device for superfine metal wire

Info

Publication number: CN218601022U
Application number: CN202222649493.4U
Authority: CN
Inventors: 林理波; 朱建国; 姚越彬
Original assignee: Zhongtian Iron And Steel Group Huai'an New Materials Co ltd; Zenith Steel Group Co Ltd
Current assignee: Zhongtian Iron And Steel Group Huai'an New Materials Co ltd; Zenith Steel Group Co Ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-10
Anticipated expiration: 2032-10-09

Abstract

The utility model relates to an ultra-fine metal wire twists reverse testing arrangement has the frame, is equipped with three anchor clamps that are used for taut wire of group at least on the frame, anchor clamps are including installing the rotary fixture who makes rotary motion at frame right side end, setting up and make the removal anchor clamps that remove when the wire twists reverse the fracture at a distance of rotary fixture, and the wire both ends of examination of awaiting measuring are fixed respectively between rotary fixture and removal anchor clamps, install the encoder of the number of turns that twists reverse when rotatory to the fracture of record wire synchronous rotary fixture on the rotary fixture, are equipped with the photoelectric switch that the control encoder stopped to count the number of turns that twists reverse the wire on the frame. The utility model discloses the wire that will await measuring is fixed between rotary fixture and the removal anchor clamps, can test many wires very much, and the number of turns of torsion and the visual display when encoder record wire synchronous revolution anchor clamps are rotatory to the fracture can set for the rotational speed wantonly on human-computer interface, satisfies the test of diameter 0.1mm wire.

Description

Torsion testing device for superfine metal wire

Technical Field

The utility model discloses metal material test technique relates to the field, especially a superfine metal wire twists reverse testing arrangement.

Background

The torsion tester is widely applied to torsion tests of metal and nonmetal materials of wire products such as spring steel, steel wire ropes, steel wires, electric wires, cables and the like so as to obtain performance parameters such as maximum torque, torsional strength, upper yield strength, lower yield strength and the like of the materials.

The metal wire twisting is to apply unidirectional or bidirectional twisting by taking the wire as an axis until a sample is broken, and the twisting resistance of the material is measured by the number of twisting turns when the unit diameter and the length are broken.

The wire diameter of the wire tested by the current testing device is mostly 0.3mm to 10mm, and a small amount of wire with the diameter of 0.3mm to 0.1mm can be tested, but when the wire with the diameter of less than 0.1mm is tested, the wire is generally used by changing a clamp and other methods, but the following problems are inevitable in the using process.

First, the clamp of the conventional torsion testing machine mostly adopts a three-jaw chuck or a drill chuck to clamp the sample. The clamping of a thicker sample is also convenient, but the metal wire is manufactured by using a principle that a die is used for compressing and a winding drum is used for drawing and pulling in the manufacturing process, so that the metal wire is in a state of one circle in a natural state, the thinner the metal wire is, the smaller the circle diameter is, even a small section of the metal wire can be in a bent state, a two-claw clamp is used for clamping in the situation, the positioning precision is poor, the thin metal wire cannot be clamped on the rotating center of the clamp, the metal wire is too thin and is difficult to clamp after being worn, and the metal wire is easy to fall off in the test process to cause invalid test results.

The diameter of the metal wire is thinner and the number of torsion resistant turns is larger, the rotating speed of the large-diameter twisting machine is slower during testing to obtain larger torque, generally below 60 turns, the 100 mm breaking turn number of the stainless steel wire with the diameter of 0.1 exceeds 500 turns, the time of at least 15 minutes is needed for one test, only one sample can be made at one time, the efficiency is lower, and the testing requirement cannot be met at all.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a can improve positioning accuracy, enlarge rotational speed scope, satisfy the superfine metal wire torsion test device of diameter metal wire test requirement below 0.1 mm.

The utility model provides a technical scheme that its technical problem adopted is: a torsion testing device for an ultrafine metal wire rod is provided with a base, wherein at least three groups of clamps for longitudinally tensioning the metal wire are arranged on the base, each clamp comprises a rotary clamp which is arranged at the right side end of the base and performs rotary motion, a movable clamp which is arranged at a distance from the rotary clamp and can perform longitudinal movement when the metal wire is subjected to torsional fracture, two ends of the metal wire to be tested are respectively fixed between the rotary clamp and the movable clamp, a driving mechanism for driving the rotary clamp to rotate is arranged on the base, and an encoder for recording the number of torsion turns of the metal wire when the metal wire synchronously rotates and fractures is arranged on the rotary clamp; a heavy hammer connected with the movable clamp through a steel wire rope is hung on the left end side of the machine base, and a photoelectric switch for controlling the encoder to stop counting the number of the torsional turns of the metal wire when the metal wire is broken is arranged on the machine base on the left side of the movable clamp.

Preferably, three groups of clamps for tensioning the metal wires are mounted on the base, and the metal wires are fixed between the movable clamp and the rotary clamp through the positioning columns and the compression nuts.

Specifically speaking, actuating mechanism including installing gear motor and the gear box on the frame, install three meshing transmission's gear in proper order in the gear box, the transmission shaft power take off of three gear is connected with the rotary fixture transmission respectively, the gear motor output shaft passes through the shaft coupling and is connected with the transmission shaft input transmission of first gear, the encoder install on the transmission shaft of third gear.

Furthermore, the base is provided with a speed regulator for setting the rotating speed of the speed reducing motor, a human-computer interface for setting the number of turns of the metal wire, a start button and a stop button.

Furthermore, three guide rails are fixed on the base side by side, a sliding block in sliding fit with the guide rails is fixed on the bottom surface of each movable clamp, and an induction column which triggers the action of the photoelectric switch along with the movement of the movable clamp is fixed at the left end of each movable clamp.

Further, the frame on be fixed with the mount pad, the guide rail is fixed on the bottom plate of mount pad, but the mount pad left end is equipped with the baffle that the vertical movement anchor clamps moving direction removed, the interval is equipped with the three recess that corresponds with the removal anchor clamps on the baffle, a recess side is the inclined plane, is equipped with the gyro wheel that can block in the recess on the removal anchor clamps.

Three pulleys are arranged at intervals on the left end of the base, and the end of a steel wire rope of the hanging heavy hammer is connected with a set screw fixed on the movable clamp by bypassing the pulleys.

The utility model has the advantages that: the utility model fixes the metal wire to be tested between the rotary clamp and the movable clamp, the metal wire is fast in clamping speed and high in positioning precision, and the metal wire can be ensured to always use the self axis as the rotation center in the twisting process; the efficiency is high, and a plurality of metal wire samples can be tested at one time; in the testing process, the number of turns of the metal wire synchronous rotating clamp which rotates to fracture is recorded through an encoder, and the number of turns can be visually displayed on a screen of a human-computer interface; the rotating speed can be set at will according to different materials, the rotating speed range is wide, the wire diameter is thin, and the wire can be tested for any diameter below 0.1 mm.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the mounting structure of the rotary clamp of the present invention.

Fig. 3 is a schematic structural view of the movable clamp of the present invention.

Fig. 4 is a schematic view of the mounting structure of the movable clamp of the present invention.

Fig. 5 is one of the schematic views of the installation of the wire on the movable clamp of the present invention.

Fig. 6 is a second schematic view of the installation of the wire on the movable clamp of the present invention.

In the figure: 1. the automatic control device comprises a base, 2 parts of a rotary clamp, 3 parts of a movable clamp, 4 parts of a positioning column, 5 parts of a compression nut, 6 parts of a metal wire, 7 parts of a speed reducing motor, 8 parts of a gear box, 9 parts of a gear, 10 parts of an encoder, 11 parts of a speed regulator, 12 parts of a human-computer interface, 13 parts of a starting button, 14 parts of a stopping button, 15 parts of a mounting seat, 16 parts of a guide rail, 17 parts of a sliding block 18, a heavy hammer, 19 parts of a pulley, 20 parts of a photoelectric switch, 21 parts of an induction column, 22 parts of a baffle, 23 parts of a groove and 24 parts of a roller.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 and 2, the torsion testing device for the ultra-fine metal wire comprises a machine base 1 with an upper flat plate and inclined side plates, three groups of clamps for longitudinally tensioning metal wires 6 are arranged on the upper flat plate of the machine base 1, each group of clamps comprises three rotary clamps 2 which are arranged on the right end side of the upper flat plate of the machine base 1 side by side and three movable clamps 3 which are arranged at intervals of the rotary clamps 2, wherein the rotary clamps 2 are of cylindrical structures, the left half section of each rotary clamp 2 is provided with a milling plane along the axis of the rotary clamp, each movable clamp 3 is of a rectangular structure, and the metal wires 6 to be tested are fixed between the upper surface of each movable clamp 3 and the milling plane of the corresponding rotary clamp 2 through positioning columns 4 and compression nuts 5.

The upper flat plate of the base 1 positioned on the right side of the rotary fixture 2 is provided with a driving mechanism for driving the rotary fixture 2 to rotate, the driving mechanism comprises a speed reducing motor 7 and a gear box 8 which are arranged on the upper flat plate of the base 1, three gears 9 which are sequentially meshed and driven are arranged in the gear box 8, the technical parameters of the three gears 9 are consistent, the power output ends of the transmission shafts of the three gears 9 are respectively in transmission connection with the three rotary fixtures 2, the output shaft of the speed reducing motor 7 is in transmission connection with the input end of the transmission shaft of the first gear 9 through a coupler, and the speed reducing motor 7 drives the three rotary fixtures 2 to rotate at the same speed through the three gears 9 in the gear box 8; an encoder 10 is arranged on a transmission shaft of the third gear 9, and the encoder 10 is used for recording the rotation number of the metal wire 6 when the synchronous rotating clamp 2 rotates to be broken and can be accurate to 0.1 circle.

A speed regulator 11, a man-machine interface 12, a start button 13 and a stop button 14 are arranged on an inclined side plate of the base 1, the rotating speed of the reducing motor 7 can be set by adjusting the speed regulator 11, and the speed regulating range is 60-300 revolutions per minute by matching with the reduction ratio of the reducing motor 7; the man-machine interface 12 is used for setting parameters, setting qualified twisting turns according to the metal wires 6 with different specifications, displaying specific parameters during testing, and displaying each metal wire 6 respectively, and the start button 13 and the stop button 14 are used for starting and stopping the speed reducing motor 7 respectively.

As shown in fig. 3 and 4, a mounting seat 15 is fixed on a base 1 where the movable clamp 3 is located, three guide rails 16 are fixed on a bottom plate of the mounting seat 15 side by side, a slider 17 in sliding fit with the guide rails 16 is fixed on a bottom surface of each movable clamp 3, each movable clamp 3 can independently slide left and right, each movable clamp 3 is connected with a weight 18 through a steel wire rope, an upper end of the steel wire rope is connected with a set screw fixed on the movable clamp 3, and the weight 18 is connected to a lower end of the steel wire rope and vertically slides on the ground around a pulley 19 installed at a left end of the base 1 to maintain a constant tension to the left.

The machine base 1 corresponding to the left side of each movable clamp 3 is provided with a photoelectric switch 20 which controls the encoder 10 to stop counting the number of the torsion turns of the metal wire 6 when the metal wire 6 is broken, a slot is arranged in the middle of the upper part of the photoelectric switch 20, and the left end of each movable clamp 3 is fixedly provided with an induction column 21 which is inserted into the slot along with the movement of the movable clamp 3 so as to trigger the action of the photoelectric switch 20.

A baffle plate 22 which can move in the direction perpendicular to the moving direction of the movable clamp 3 is arranged at the left end of the mounting seat 15, three grooves 23 corresponding to the movable clamp 3 are arranged on the baffle plate 22 at intervals, wherein one side surface of each groove 23 is an inclined surface, and a roller 24 which can be clamped into the groove 23 is arranged at the rear end of the left side of the movable clamp 3.

Referring to fig. 2, 5 and 6, during testing, the right ends of three wires 6 are wound on the positioning posts 4 of the rotary fixture 2 respectively, then the wires 6 are pressed on the milling plane of the rotary fixture 2 by the pressing nuts 5, the baffle plate 22 is pushed backwards, the roller 24 rolls along the inclined plane on the side surface of the groove 23 on the baffle plate 22, so that the three movable fixtures 3 move rightwards, the left ends of the wires 6 are wound on the positioning posts 4 of the movable fixtures 3, and the pressing nuts 5 are also used for pressing. After all three wires 6 are fixed, the retainer 22 is moved forward to reset, and because both ends of the wires 6 are fixed, the wires will not move under the pulling force of the weight 18.

The speed reducing motor 7 synchronously drives the three rotary fixtures 2 to rotate at the same speed through the three gears 9, the encoder 10 synchronously drives the transmission shaft of the third gear 9 to rotate, and the number of rotation turns of the metal wire 6 is recorded. When one of the wires 6 is twisted to a certain number of turns and broken, the corresponding movable clamp 3 moves leftwards under the tension of the weight 18, and the roller 24 returns to the groove 23 of the baffle 22. At this time, the induction column 21 moves into the slot in the middle of the photoelectric switch 20 along with the moving fixture 3, and triggers the photoelectric switch 20 to act, so that the encoder 10 is controlled to stop counting the number of turns of the torsion of the wire 6, and the number of turns is displayed on the human-computer interface 12. When all the three metal wires 6 are broken, the speed reducing motor 7 stops rotating, the metal wires 6 on the clamp are removed, and the operation can be repeated.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a superfine metal wire twists reverse testing arrangement, has the frame, characterized by: the machine base is at least provided with three groups of clamps for longitudinally tensioning the metal wire, each clamp comprises a rotary clamp which is arranged at the right side end of the machine base and performs rotary motion, a movable clamp which is arranged at a distance from the rotary clamp and can perform longitudinal movement when the metal wire is subjected to torsional fracture, two ends of the metal wire to be tested are respectively fixed between the rotary clamp and the movable clamp, the machine base is provided with a driving mechanism for driving the rotary clamp to rotate, and the rotary clamp is provided with an encoder for recording the number of torsional turns of the metal wire when the synchronous rotary clamp rotates to fracture; a heavy hammer connected with the movable clamp through a steel wire rope is hung on the left end side of the machine base, and a photoelectric switch for controlling the encoder to stop counting the number of the torsional turns of the metal wire when the metal wire is broken is arranged on the machine base on the left side of the movable clamp.

2. The torsion testing apparatus for the ultra-fine metal wire as claimed in claim 1, wherein: the machine base is provided with three groups of clamps for tensioning metal wires, and the metal wires are fixed between the movable clamp and the rotary clamp through positioning columns and compression nuts.

3. The torsion testing apparatus for the ultra-fine metal wire as claimed in claim 2, wherein: the driving mechanism comprises a speed reducing motor and a gear box which are installed on the base, three gears which are sequentially meshed for transmission are installed in the gear box, the power output ends of transmission shafts of the three gears are respectively in transmission connection with the rotary fixture, the output shaft of the speed reducing motor is in transmission connection with the input end of the transmission shaft of the first gear through a coupler, and the encoder is installed on the transmission shaft of the third gear.

4. The torsion testing apparatus for the ultra-fine metal wire as claimed in claim 3, wherein: the base is provided with a speed regulator for setting the rotating speed of the speed reducing motor, a human-computer interface for setting the number of turns of the metal wire, a start button and a stop button.

5. The torsion testing device for the ultra-fine metal wire rod of claim 3, wherein: the machine base is fixed with three guide rails side by side, the bottom surface of each movable clamp is fixed with a sliding block in sliding fit with the guide rail, and the left end of each movable clamp is fixed with an induction column which is moved along with the movable clamp to trigger the action of a photoelectric switch.

6. The torsion testing apparatus for the ultra-fine metal wire as claimed in claim 5, wherein: the base on be fixed with the mount pad, the guide rail is fixed on the bottom plate of mount pad, but the mount pad left end is equipped with the baffle that the vertical migration anchor clamps moving direction removed, the interval is equipped with three recess that corresponds with the removal anchor clamps on the baffle, a recess side is the inclined plane, is equipped with the gyro wheel that can block into in the recess on the removal anchor clamps.

7. The torsion testing apparatus for the ultra-fine metal wire as claimed in claim 1, wherein: three pulleys are arranged at intervals on the left end of the base, and the end of a steel wire rope of the hanging heavy hammer is connected with a set screw fixed on the movable clamp by bypassing the pulleys.