CN104502186A - Electric-control drawing force detector - Google Patents

Abstract

The electronically controlled pulling force detector provided by the present invention is provided with a photoelectric switch, including two limit photoelectric switches respectively installed at the limit positions of the relative movement of the two sliding tables and one installed at the zero rotation position of the stepping motor shaft The zero-point photoelectric switch of the photoelectric switch; the present invention uses a photoelectric switch to determine the limit position of the relative movement of the two sliding tables and the zero-point rotation position of the stepping motor shaft; thus the stepping motor drives the sliding table and the detection ferrule to perform phase-to-phase and phase-to-phase Back movement, first insert the two ends of the ceramic sleeve to be tested, and then pull it out. During this process, the pulling force acquisition unit collects the data information transmitted by the force sensor; the calculation unit performs calculation processing on the data information. The recording and data analysis of the force change data in the whole drawing process can be realized, which can provide valuable reference for the parameter adjustment of production equipment, the improvement of high-quality products, the reduction of rework rate and scrap rate, etc. to improve the production process.

Description

An electronically controlled pullout force detector

technical field

The invention belongs to the technical field of precision parts detection, and in particular relates to an electronically controlled pulling force detector and a control method.

Background technique

The precision sleeve involved in the present invention belongs to the optical fiber connector. The optical fiber connector is a device for detachable (movable) connection between the optical fiber and the optical fiber. The energy can be coupled into the receiving optical fiber to the greatest extent, and the impact on the system caused by its intervention in the optical link is minimized. There are many types of fiber optic connectors, which can be divided into FC, SC, ST, MU, LC, etc. according to the connection method; according to the casing material, they can be divided into zirconia ceramic materials, SUS materials, glass materials, plastic materials, metal materials, etc.

With the breakthrough and maturity of the most cutting-edge technologies and processes such as the preparation of nano-zirconia ceramic materials, sintering molding, super-hard material precision processing, and material performance testing, the production base of zirconia ceramic bushings has gradually shifted to China. However, as the precision machining technology of ceramic bushings is becoming mature, the detection of quality parameters such as geometric dimensions, surface defects, and mechanical properties of zirconia ceramic bushings in the mass production process still relies heavily on manual work, which greatly affects product production. Efficiency and quality stability of finished products, and affect the export of fiber optic connector products.

In view of the lack and inconvenience of the above-mentioned conventional precision bushing detection, with the spirit of research innovation and excellence, using their professional vision and professional knowledge, Chen Hong, Zhang Lei and others have developed a method to replace manual detection and improve detection stability. The high-quality and precise automatic testing machine for the two-way pulling force of precision casing improves the efficiency of production inspection. Such as patent CN202305332U discloses the automatic detection device for bidirectional pulling force of ceramic casing, including motor, gear, and a pair of detection heads and a linear guide module, the linear guide module is installed on both sides of the gear in the middle of the detection mechanism, and the linear guide module A rack protrudes from one side and meshes with the gear. A motor is installed at the end of any linear guide module. Through the rack and pinion, two sets of linear guide modules can be driven forward and backward; the detection head is fixed on the linear guide module. On the guide module, the detection head is composed of a ferrule and a force sensor. The force sensor can sense the force of the ferrule, and the ferrule of the two detection heads is arranged opposite to each other. Patent CN102426144A discloses a precision casing bidirectional drawing force automatic detection machine, including a feeding mechanism, a transfer mechanism, a detection mechanism, a sorting mechanism and a numerical control device. , the vertical retrieving device can control the vertical movement of the main body, the traverse device can control the lateral movement of the main body along the detection table of the detection mechanism, and a workpiece clamping position is provided at both ends of the main body; the detection mechanism includes a motor, a detection table, and a pair of Detection head and linear guide module. The linear guide module is installed on both sides of the gear in the middle of the detection mechanism. A rack protrudes from one side of the linear guide module and meshes with the gear. A motor is installed on any linear guide module. end, and can drive a pair of linear guide modules to move forward and backward; the detection head is fixed on the linear guide modules.

Although the above-mentioned automatic testing machine can meet the detection requirements of the pulling force to a certain extent, there are still the following problems in actual use: (1) The above-mentioned automatic testing machine only measures the maximum pulling force, and the product is tested according to this parameter. Automatic sorting, but can not provide the change data of the force of the whole drawing process; The data of the sample pulling force cannot realize the data analysis of the pulling force, so it cannot provide a reference for improving the production process such as adjusting the parameters of the production equipment, improving the rate of excellent products, reducing the rate of rework and scrap. (3) Due to the characteristics of a large number of test samples and many batches, how to realize the storage, import, export, query, algorithm processing, and modeling processing of historical test data is also a problem that has not been solved by the existing technology.

Contents of the invention

What the present invention aims to solve is the problem that the drawing force detector in the prior art cannot provide the change data of the force in the whole drawing process and lacks data management, and then provide a method that can effectively store the change data of the force in the whole drawing process The electronically controlled pullout force detector and the control method thereof. At the same time, a pullout force tester that can be calibrated is provided that has higher test accuracy than the precision casing bidirectional pullout force automatic tester in the prior art.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

An electronically controlled pullout force detector, comprising:

a base on which slide rails are arranged;

Two sliding tables are installed on the slide rails, and detection ferrules are respectively fixedly installed on the two sliding tables, and the two detection ferrules are arranged opposite to each other;

The force sensor is respectively connected and arranged with the two detection ferrules;

A double-headed lead screw is connected to the two sliding tables and is suitable for driving the two sliding tables to move in reverse along the slide rails;

A stepper motor is connected with the double-headed screw;

The clamping device is arranged between the two sliding tables and is suitable for fixing the ceramic casing sample; during the detection process, the detection ferrules of the two detection heads are on the same axis as the ceramic casing sample On a straight line and parallel to the axis of the double-ended screw;

The photoelectric switch includes two limit photoelectric switches respectively installed at the limit positions of the relative movement of the two sliding tables, which are used to determine the limit positions of the relative movement of the two sliding tables; The zero-point photoelectric switch at the zero-rotation position of the zero-point rotation position is used to determine the zero-point rotation position of the stepper motor shaft;

The control unit is used to receive the transmission signal of the photoelectric switch and control the rotating shaft of the stepping motor to rotate from the zero point rotation position, first to drive the two sliding tables to move toward each other according to the set speed and set displacement value, and then according to Set the speed to move in the opposite direction until the rotating shaft of the stepper motor returns to the zero point rotation position again; during the opposite movement, when any one of the two limit photoelectric switches is blocked, the The control unit controls the stepping motor to stop;

A pull-out force acquisition unit is used to collect data information transmitted by the force sensor;

The calculation unit receives the data information transmitted by the pulling force acquisition unit and performs calculation processing on the data information.

An input device is connected with the control unit for inputting the set speed and set displacement values.

A pulse encoding module is arranged on the rotating shaft of the stepping motor to detect the actual rotation step distance of the stepping motor; the control unit receives the detection result transmitted by the pulse encoding module and converts the detection result into sliding The actual displacement value of the platform.

A storage unit is also provided for storing the data information and the result of the operation processing.

A display device is connected to the pull-out force acquisition unit and the calculation unit for displaying the data information and the results of calculation processing.

A host computer is also provided, and the data information and the results of calculation and processing are transmitted to the host computer by means of communication and stored in the database.

The clamping device includes:

a fixture support seat, arranged on the base and fixedly connected with the base;

The clamp is installed on the clamp support seat and consists of a clamp body and two positioning blocks, the two positioning blocks are fixedly arranged on the upper end of the clamp body, and the two positioning blocks and the clamp A positioning groove suitable for placing the ceramic sleeve sample is formed between the specific upper end surfaces.

The distance between the two inner walls of the positioning groove is consistent with the diameter of the outer wall of the ceramic casing sample; the groove depth of the positioning groove is not less than the radius of the outer wall of the ceramic casing sample.

Side baffles are installed on both sides of the clamp facing the two sliding tables, and each side baffle is provided with a tapered hole, and the tapered hole gradually moves towards the inside of the clamp. Reduced, the minimum inner diameter of the tapered hole is 0.1mm larger than the outer diameter of the ceramic casing sample, and the centerlines of the tapered holes on the two side baffles are on the same straight line; the positioning groove The centerline of symmetry coincides with the centerlines of the tapered holes on the two side baffles.

Probe bases are respectively installed on the two sliding tables, mounting holes are provided on the probe bases, the clamping head of the detection ferrule is floatingly set in the mounting holes, and the force sensor is fixed It is arranged on the probe base, and the two probe bases are snapped into the positioning grooves of the probe bases on the two sliding platforms respectively;

A clamp positioning groove is provided on the upper surface of the clamp support seat, and the clamp is snapped into the clamp positioning groove;

The line of symmetry between the positioning grooves of the measuring head seat on the two sliding tables and the positioning groove of the clamp on the clamp supporting seat is parallel to the axis of the double-ended screw.

The electronic control system for the pullout force detector provided by the present invention has the advantages of:

(1) The electronically controlled pulling force detector provided by the present invention is provided with a photoelectric switch, including two limit photoelectric switches respectively installed at the limit positions of the relative movement of the two sliding tables and a photoelectric switch installed on the rotating shaft of the stepping motor. The zero-point photoelectric switch at the zero-rotation position of the zero-rotation position; by setting the photoelectric switch, it is used to determine the limit position of the relative motion of the two sliding tables and the zero-point rotation position of the stepping motor shaft; in the initial stage of detection, the The control unit controls the rotating shaft of the stepper motor to return to zero according to the signal transmitted by the zero point photoelectric switch; The stage moves in opposite directions, and then moves in opposite directions until the rotating shaft of the stepping motor returns to the zero point rotation position again; When any one of the limit photoelectric switches is blocked, the control unit controls the stepper motor to stop.

(2) The electronically controlled pulling force detector provided by the present invention is provided with a pulse encoding module, which is fixedly connected to the shaft of the stepping motor, and is used to detect the actual rotation step of the stepping motor, and passes through the double head The screw rod is converted into the actual displacement value. During the detection process, the stepping motor drives the sliding table to move in the opposite direction according to the set displacement value and the setting moving speed; when reaching the limit position, the stepping motor stops for a moment, and then moves in the opposite direction; correspondingly, The detection ferrule on the sliding table also performs the facing-to-backward movement, so as to quickly insert the two ends of the ceramic bushing to be tested first, and then slowly pull out the two ends of the ceramic bushing backward , and then retreat quickly to the zero position; during this process, the pulling force acquisition unit collects the data information transmitted by the force sensor; the calculation unit performs calculation processing on the data information. In this way, the recording and data analysis of the force change data during the entire drawing process can be realized, which can provide valuable reference for improving the production process such as parameter adjustment of production equipment, improvement of excellent product rate, reduction of rework rate and scrap rate.

(3) The electronically controlled pullout force detector provided by the present invention is also equipped with a host computer, and the data information and the results of calculation and processing are transmitted to the host computer by means of communication and stored in the database. In this way, the historical detection data of multiple batches and a large number of detection samples can be stored and managed, and data query, algorithm processing, modeling processing, etc. can be realized.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to the specific implementation cases of the present invention and in conjunction with the accompanying drawings, wherein

Fig. 1 shows the structural representation of the pullout force detector of the present invention;

Figure 2 shows a schematic structural view of the clamping device of the present invention;

Fig. 3 shows the composition schematic diagram of the electronic control system of the pulling force detector of the present invention;

Wherein, reference sign is:

1-Left sliding table; 2-Sliding rail; 3-Double-head screw; 4-Base; 5-Positioning groove; 6-Stepping motor; 7-Right sliding table; Sensor; 10-clamping head; 11-locking screw; 12-detection ferrule; 13-ceramic casing sample; 14-fixture; 15-limit photoelectric switch; 16-control unit; 17-pulse coding module; 18 - input device; 19 - pulling force acquisition unit; 20 - computing unit; 21 - storage unit; 22 - host computer.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

Example 1

As shown in FIG. 1 and FIG. 2 , the electronically controlled pullout force detector in this embodiment includes a base 4 and a slide rail 2 installed on the base 4 . Two sliding tables are installed on the slide rail 2, which are respectively a left sliding table 1 and a right sliding table 7, and a measuring head seat 8 is respectively installed on the left sliding table 1 and the right sliding table 7, and the two Each of the probe bases 8 is respectively clamped in the probe base positioning grooves on the left slide 1 and the right slide 7; each probe base 8 is provided with a detection ferrule 12. The clamping head 10 and the force sensor 9, wherein the detection ferrule 12 is fastened and fixed on one side of the clamping head 10 by a locking screw 11, and the other side of the clamping head 10 is connected to the The force sensor 9 is connected, and the clamping head 10 is also floatingly connected with the probe base 8; the detection ferrules 12 on the two probe bases 8 are arranged oppositely. As a preferred implementation mode, the left sliding table 1 and the right sliding table 7 described in this embodiment are double guide rail ball sliding tables that eliminate gap measurement. As an optional implementation, the left sliding platform 1 and the right sliding platform 7 in this embodiment can also be set as other types of sliding platforms.

A double-ended screw 3 is arranged on the base 4, and the double-ended screw 3 is connected with the left sliding table 1 and the right sliding table 7, and a stepping screw 3 is connected with the double-ended screw 3. Motor 6, under the action of the stepping motor 6, the double-headed lead screw 3 is suitable for driving the left sliding table 1 and the right sliding table 7 along the slide rail 2 to advance toward the center and back to back sports;

Also be provided with fixture 14 on described base 4, described fixture 14 is arranged between described left sliding platform 1 and right sliding platform 7, is suitable for placing ceramic bushing sample 13 at the top of described fixture 14 The positioning groove 5.

The electronically controlled pullout force detector in this embodiment is provided with a photoelectric switch, including two limit photoelectric switches 15 respectively installed at the limit positions of the relative movement of the two sliding tables, for determining the relative movement of the two sliding tables limit position; also includes a zero-point photoelectric switch installed at the zero-rotation position of the stepping motor shaft, used to determine the zero-rotation position of the stepping motor shaft;

In addition, as shown in Figure 3, the electronically controlled pullout force detector in this embodiment is also provided with:

The control unit 16 is used to receive the signal transmitted by the photoelectric switch and control the stepper motor to rotate from the zero point rotation position, and then drive the two sliding tables to move toward each other according to the set displacement value and set speed, and then move according to the set speed. Carry out opposite movement, until the rotating shaft of described stepping motor gets back to described zero point rotation position again; On the rotating shaft of described stepping motor, be provided with pulse coding module 17, be used to detect the actual rotation step distance of stepping motor 6 ; The control unit 16 detects the actual rotation step of the stepper motor by the pulse encoding module 17 and converts the rotation step into the actual displacement value of the slide table; When any one of the bit photoelectric switches 15 is blocked, the control unit 16 controls the stepper motor to stop. An input device 18 is connected to the control unit 16 for inputting the set moving speed and the set displacement. The input device 18 in this embodiment is a touch screen; as an optional embodiment, The set moving speed and set displacement may also not be input through the input device 18 , but directly stored in the control unit 16 as thresholds.

A pull-out force acquisition unit 19 is connected to the force sensor for collecting the data information transmitted by the force sensor; the data information utilizes the computing unit 20 to carry out calculation processing; the touch display screen described in this embodiment is also connected with the The pull-out force acquisition unit 19 is connected to the computing unit 20 for displaying data information and computing results.

The pullout force detector in this embodiment is further provided with a storage unit 21 for storing the data information and the results of the calculation processing.

The detection method of the pull-out force detector described in the present embodiment is:

(1) Lofting step: placing the ceramic casing sample 13 to be tested in the positioning groove 5 of the fixture 14;

(2) Input the set speed and the set displacement value through the input device 18. In the initial stage of detection, the control unit 16 controls the rotating shaft of the stepper motor to be at the zero point rotation position according to the signal transmitted by the zero point photoelectric switch;

(3) The control unit 16 controls the rotation shaft of the stepping motor to rotate from the zero point rotation position, and through the transmission effect of the double-headed screw, firstly controls the two sliding tables to move according to the set speed and set displacement value. In this process, the control unit controls the stepper motor to rotate according to the actual displacement value of the sliding table:

During the relative movement, the control unit 16 compares the actual displacement value with the set displacement value, and when the actual displacement value is less than the set displacement value, the control unit 16 Control the stepper motor to rotate forward, drive the two sliding tables to move towards each other at a set speed, thereby pushing the detection ferrule to be inserted into the sample of the ceramic sleeve to be tested from both ends; until the actual displacement value is equal to the set When the displacement value is set, the control unit 16 controls the stepping motor to stop;

Then the control unit 16 controls the reverse rotation of the stepping motor, and drives the two sliding tables to carry the detection ferrule to move in opposite directions until the rotating shaft of the stepping motor returns to the zero point rotation position again; In the process, the pullout force acquisition unit 19 receives the signal transmitted by the force sensor 9 and converts it into the pullout force data information, and the calculation module receives the pullout force data information transmitted by the pullout force acquisition unit 19 and performs calculation processing .

In the process of moving towards each other, in order to prevent the sliding table from overtaking the limit position and causing damage to the mechanical structure of the detector, when any one of the two limit photoelectric switches 15 is blocked, the control unit 16 controls the The stepper motor stops.

The set speed input by the input device 18 described in this embodiment can be a variable value. As a preferred embodiment, the set speed in the process of relative motion can be set larger, so as to control the two detection ferrules to Insert the two ends of the ceramic bushing sample 13 to be tested at a faster speed; and in the process of moving away from each other, it is preferable that the detection ferrule pulls out the two ends of the ceramic bushing sample 13 at a slow speed, and then retreats quickly. to the zero position; or the set speed can be set to a variable value that is proportional to the actual displacement value of the sliding table, and the two sliding tables are controlled to perform variable speed movement according to the relationship curve between the set speed and the actual displacement value .

Example 2

As shown in Figure 1 and Figure 2, the electronically controlled pullout force detector in this embodiment includes a base 4 and a slide rail 2 installed on the base 4. Two sliding tables are installed on the slide rail 2, which are respectively a left sliding table 1 and a right sliding table 7, and a measuring head seat 8 is respectively installed on the left sliding table 1 and the right sliding table 7, and the two Each of the probe bases 8 is respectively clamped in the probe base positioning grooves on the left slide 1 and the right slide 7; each probe base 8 is provided with a detection ferrule 12. The clamping head 10 and the force sensor 9, wherein the detection ferrule 12 is fastened and fixed on one side of the clamping head 10 by a locking screw 11, and the other side of the clamping head 10 is connected to the The force sensor 9 is connected, and the clamping head 10 is also floatingly connected with the probe base 8; the detection ferrules 12 on the two probe bases 8 are arranged oppositely. As a preferred implementation mode, the left sliding table 1 and the right sliding table 7 described in this embodiment are double guide rail ball sliding tables that eliminate gap measurement. As an optional implementation, the left sliding platform 1 and the right sliding platform 7 in this embodiment may also be configured as sliding platforms of other shapes.

A double-ended screw 3 is arranged on the base 4, and the double-ended screw 3 is connected with the left sliding table 1 and the right sliding table 7, and a stepping screw 3 is connected with the double-ended screw 3. Motor 6, under the action of the stepping motor 6, the double-headed lead screw 3 is suitable for driving the left sliding table 1 and the right sliding table 7 along the slide rail 2 to advance toward the center and back to back detect motion;

A clamping device is also provided on the base 4, and the clamping device includes a clamp supporting base arranged on the base and fixedly connected with the base and a clamp installed on the clamp supporting base ; In this embodiment, a fixture positioning groove is provided on the upper surface of the fixture support seat, the fixture is installed in the fixture positioning groove, and the measuring head seat positioning groove on the two slides and the fixture The line of symmetry between the three fixture positioning grooves on the support seat is parallel to the axis of the double-ended screw.

The clamp described in this embodiment is composed of a clamp body and two positioning blocks, the two positioning blocks are fixedly arranged on the upper end of the clamp body, and the two positioning blocks and the upper end of the clamp body A positioning groove 5 suitable for placing the ceramic sleeve sample 13 is formed between the end faces.

The distance between the two inner walls of the positioning groove 5 is consistent with the diameter of the outer wall of the ceramic sleeve sample; the groove depth of the positioning groove 5 is not less than the radius of the outer wall of the ceramic sleeve sample. Side baffles are respectively installed on both sides of the clamp, and each of the side baffles is provided with a tapered hole, the tapered hole gradually decreases toward the inside of the clamp, and the tapered The minimum inner diameter of the hole is 0.1mm larger than the outer diameter of the ceramic casing sample, and the centerlines of the tapered holes on the two side baffles are on the same straight line; the symmetrical centerline of the positioning groove 5 is in line with the two The centerlines of the tapered holes on the two side baffles coincide.

The electronic control system of the pullout force detector in this embodiment is provided with a photoelectric switch, including two limit photoelectric switches 15 respectively installed at the extreme positions of the relative movement of the two slide tables, for determining the distance between the two slide tables. The limit position of relative movement; also includes a zero-point photoelectric switch installed at the zero-rotation position of the stepping motor shaft, used to determine the zero-rotation position of the stepping motor shaft;

In addition, the electric control system of the pulling force detector in this embodiment is provided with:

The control unit 16 is used to receive the transmission signal of the photoelectric switch and control the rotating shaft of the stepper motor to rotate from the zero point rotation position, first to drive the two sliding tables to move toward each other according to the set displacement value and set speed, and then Carry out opposite movement according to the relationship curve between set speed-actual displacement value, until the rotating shaft of described stepper motor returns to described zero point rotation position again; actual rotation step and convert the rotation step into an actual displacement value; in the process of moving towards and away from each other, the control unit 16 compares the actual displacement value with the set displacement value, and According to the comparison result, the stepper motor is controlled to rotate according to the required speed curve. And in the process of moving towards each other, when any one of the two limit photoelectric switches 15 is blocked, the control unit 16 controls the stepper motor to stop. An input device 18 is connected to the control unit 16 for inputting the set moving speed and the set displacement; as an optional implementation, the set moving speed and the set displacement may not be passed The input device 18 inputs, but is directly stored in the control unit 16 .

Connect with described force sensor and be provided with pull-out force acquisition unit 19, be used for collecting the data information that force sensor transmits; Described data information utilizes operation unit 20 to carry out operation processing; The connection is provided with a display device for displaying the data information and the results of the calculation processing; a host computer 22 is also provided, and the data information and the results of the calculation processing are transmitted to the host computer 22 by means of communication and stored in the database.

The working process of the pull-out force detector described in the present embodiment comprises the following steps:

(1) Lofting step: placing the ceramic casing sample 13 to be tested in the positioning groove 5 of the fixture 14;

(2) Input the set speed and the set displacement value through the input device 18. In the initial stage of detection, the control unit 16 controls the rotating shaft of the stepper motor to be at the zero point rotation position according to the signal transmitted by the zero point photoelectric switch;

(3) The control unit 16 controls the rotation shaft of the stepping motor to rotate from the zero point rotation position, and through the transmission effect of the double-headed screw, first drives the two sliding tables according to the set displacement value and the set speed. In this process, the control unit 16 compares the actual displacement value with the set displacement value, and controls the stepper motor to rotate according to the comparison result:

When the actual displacement value is less than the set displacement value, the control unit 16 controls the stepping motor to rotate forward, driving the two sliding tables to move toward each other quickly, thereby pushing the detection ferrule to be inserted from both ends into the Detect the centering of the ceramic casing sample; until the actual displacement value is equal to the set displacement value, the control unit 16 controls the stepping motor to stop;

Then the control unit 16 controls the reverse rotation of the stepper motor, and drives the two sliding tables to carry the detection ferrule to pull out the two ends of the ceramic sleeve at a slow speed, and then retreat quickly, until The rotating shaft of the stepper motor returns to the zero point rotation position again; in the process of moving back and forth, the pulling force acquisition unit 19 receives the signal transmitted by the force sensor 9 and converts it into pulling force data information, and calculates and controls The processing module receives the pulling force data information transmitted by the pulling force acquisition unit 19 and performs calculation and processing.

In the process of moving towards each other, in order to prevent the sliding table from overtaking the limit position and causing damage to the mechanical structure of the detector, when any one of the two limit photoelectric switches 15 is blocked, the control unit 16 controls the The stepper motor stops.

In this embodiment, the data is managed by the host computer 22: due to the large number of test samples and many batches, the host computer 22 can save all data of each test sample; at the same time, through the database management system, the operator can carry out historical data. Import, export, query, etc. At the same time, algorithm processing such as filtering can also be performed on the data; data can also be shared with third-party software for data modeling processing, etc.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. an automatically controlled pulling capacity detector, comprising:

Pedestal, described pedestal is provided with slide rail;

Two slide units, are arranged on described slide rail, and described two slide units are installed with detection lock pin respectively, and two described detection lock pins are oppositely arranged;

Force snesor, detects lock pin respectively and is connected and arranges with described two;

Double-end lead-screw, is connected with described two slide units and arranges, and is suitable for driving described two slide units to carry out counter motion along described slide rail;

Stepper motor, is connected with described double-end lead-screw and arranges;

Clamping device, is arranged between described two slide units, is suitable for fixing porcelain bushing sample; In testing process, the detection lock pin of described two detection heads and the axis of described porcelain bushing sample be located on the same line and with the axis being parallel of described double-end lead-screw;

It is characterized in that, be also provided with:

Optoelectronic switch, comprises the limiting photoelectric switch that two are arranged on two slide unit move toward one another extreme position respectively, for determining the extreme position of described two slide unit move toward one another; Also comprise the optoelectronic switch at zero point that is arranged on zero rotational position of described stepping motor rotating shaft, for determining the turned position at zero point of described stepping motor rotating shaft;

Control module, for receive the transmission of signal of optoelectronic switch and the rotating shaft controlling described stepper motor from zero point turned position rotate, first drive described two slide units to carry out move toward one another according to setting speed and setting shift value, then carry out opposing motion according to setting speed until turned position at described zero point is got back in the rotating shaft of described stepper motor again; In the process of move toward one another, when any one in two described limiting photoelectric switch is blocked, described control module controls described stepper motor and shuts down;

Pulling capacity collecting unit, for gathering the data message that force snesor transmits;

Arithmetic element, receives the data message of described pulling capacity collecting unit transmission and carries out calculation process to described data message.

2. automatically controlled pulling capacity detector according to claim 1, is characterized in that, be connected with input media with described control module, for inputting described setting speed and setting shift value.

3. automatically controlled pulling capacity detector according to claim 1 and 2, is characterized in that, the rotating shaft of described stepper motor is provided with pulse code module, for detecting the actual rotation step pitch of stepper motor; Described control module receives the testing result of described pulse code module transmission and described testing result is converted to the actual displacement value of slide unit.

4. the automatically controlled pulling capacity detector according to claim 1 or 2 or 3, is characterized in that, be also provided with storage unit, for storing the result of described data message and calculation process.

5. automatically controlled pulling capacity detector according to claim 4, is characterized in that, is connected with display device with described pulling capacity collecting unit and arithmetic element, for showing the result of described data message and calculation process.

6. automatically controlled pulling capacity detector according to claim 5, is characterized in that, be also provided with host computer, and the result of described data message and calculation process communicatively passes to host computer and stored in database.

7., according to the arbitrary described automatically controlled pulling capacity detector of claim 1-6, it is characterized in that, described clamping device comprises:

Fixture supports seat, to be arranged on described pedestal and to be fixedly connected with described pedestal;

Fixture, be arranged on described fixture supports seat, be made up of clamp body and two position blocks, described two position blocks are fixedly installed on the upper end of described clamp body, formed and be suitable for the detent placing described porcelain bushing sample between described two position blocks and the upper surface of described clamp body.

8. the automatically controlled pulling capacity detector according to claim 1-7, is characterized in that, the spacing between two inwalls of described detent is consistent with the outer diameter of described porcelain bushing sample; The groove depth of described detent is not less than the exterior radius of described porcelain bushing sample.

9. according to the automatically controlled pulling capacity detector in claim 1-8 described in any one, it is characterized in that, towards the both sides of described two slide units, side shield is installed respectively at described fixture, each described side shield is provided with bellmouth, described bellmouth is along reducing gradually towards the direction inside described fixture, the minimum diameter 0.1mm larger than the external diameter of described porcelain bushing sample of described bellmouth, the center line in two upper conical holes of described side shield is on same straight line; The symmetrical center line of described detent overlaps with the center line of the bellmouth on two described side shields.

10. according to the automatically controlled pulling capacity detector in claim 1-9 described in any one, it is characterized in that, described two slide units are separately installed with measuring head base, described measuring head base is provided with mounting hole, the clamping head of described detection lock pin floats and is arranged in described mounting hole, described force snesor is fixedly installed on described measuring head base, and two described measuring head bases are connected in the measuring head base locating slot on described two slide units respectively;

The upper surface of described fixture supports seat is provided with fixture locating slot, and described fixture is connected in described fixture locating slot;

Measuring head base locating slot on described two slide units is parallel with described bipitch silk rod axis with the symcenter line of the fixture locating slot three on described fixture support seat.