TWI732881B - Locking training device, locking training method, locking training program and locking training system - Google Patents

Abstract

Seeking to improve the bolt and nut locking technology of the operator. It has: a plurality of bolts that can be set in a lockable manner; an axial force sensor to detect the axial force applied to each bolt; a comparison device to associate the identification information of each bolt with the detected axial force and compare each bolt Detect axial force between time. Thereby, the bolts and nuts can be locked with an appropriate locking force, and the safety of the fastened parts can be improved.

Description

Locking training device, locking training method, locking training program and locking training system

The present invention is a practical technique for learning how to lock bolts and nuts by means of a locking tool.

Regarding the locking operation of bolts and nuts used to fasten parts to each other, it is important to apply force in accordance with the strength of the parts caused by the material or size of the parts, and the types of bolts and nuts. When the force is too large, it may cause damage to the parts, breakage of the bolts, etc. On the contrary, when the force is not enough, in addition to loosening the fastening of the bolts and nuts, it may also fall into the fastening of the parts. To the state of release and so on. The degree of force exerted will be affected by the experience value of the operator.

Regarding the locking feeling of such bolts, it is known that the allowable rotating parts formed with screw holes of different diameters are arranged up and down, and the force measuring device is arranged between the allowable rotating parts. The bolt is tightened, whereby the correlation between the axial force of the bolt and the torque value added to the tool can be sensed (for example, Patent Document 1).

Advanced technical literature Patent literature

Patent Document 1: Japanese Patent Application Publication No. 2015-90359

In other words, for the bolt and nut locking operation, it is not possible to grasp the torque value added by the tool to achieve the most appropriate locking. It is also important to grasp the difference in the surface condition of the bolt and nut. The difference in surface conditions will cause the axial force acting on the bolt, that is, the tightening force between the bolt and the nut to be different. This surface state is, for example, the difference in frictional resistance to the contact surface of the bolt and the nut. When there is friction between parts, apply lubricating material on the contact surface, or change the bolt and nut to a material with less resistance, or apply a coating to reduce the resistance, but its function and effect Not consistent. If the difference in surface condition cannot be considered for locking, the proper locking condition cannot be obtained, and the fastening function of bolts and nuts cannot be fully exerted.

In addition, it is difficult to feel the difference between the surface conditions of the bolt and the nut due to the influence of the thickness or material of the tightening target member on the actual machine locking experience with the flange and other tightening target members in the middle. The locked state is different.

Therefore, in view of the above-mentioned problems, the purpose of the present invention is to improve the bolt and nut locking technology of the operator.

In addition, another purpose of the present invention is to visualize the influence of the surface condition of the bolt and the nut on the locking.

In order to achieve the above object, one aspect of the locking practice device of the present invention is to have: a plurality of bolts arranged in a lockable manner; an axial force sensor to detect the axial force applied to each bolt; a comparison device, Make the identification information of each bolt correlate with the detection axial force and compare the detection of each bolt with each other Measure the axial force.

In order to achieve the above object, one aspect of the locking practice device of the present invention is to have: a plurality of bolts with different surface states of the screws; Axial force generated by the bolt; a processing device, which receives the sensor output from the aforementioned axial force sensor, associates the identification information including the surface state of the aforementioned bolt with the detected axial force, and generates a representation to indicate the mutual relationship of the aforementioned bolts The graphical output of the comparison of the magnitude of the axial force.

The locking practice device may further have: a display device connected to the processing device to display the received comparison graphic output from the processing device.

The locking practice device may have a support box that arranges a plurality of the bolts in a row, and accommodates the bolts and the axial force sensor to support it; the processing equipment is installed in the support box in response to the bolts. , And generate the output of the comparison graph arranged with the identification information.

The locking practice device may have a memory part that memorizes the identification information of the arranged bolts; the processing equipment uses the detection of the axial force as an opportunity to read the identification of the detected bolts from the memory part Information, and generate the aforementioned comparison graphic output.

The locking practice device may be as follows: the identification information includes a torque coefficient representing the surface state of the bolt; the processing device is to associate the torque coefficient with the axial force representation output by the comparison graph and represent it.

The locking practice device may be as follows: the processing device calculates the locking torque from the detected axial force and the identification information of the bolts, and generates the aforementioned information including useful information indicating the magnitude of the locking torque of the bolts. Compare the graphic output.

In order to achieve the above objective, one aspect of the locking practice method of the present invention includes the following steps: setting a plurality of bolts in a lockable manner; detecting the axial force applied to each bolt with an axial force sensor; making each bolt The identification information is associated with the detected axial force and compares the detected axial force between each bolt.

In order to achieve the above objective, one aspect of the locking practice method of the present invention includes the following steps: use a locking tool to lock a plurality of bolts with different surface states of the screws; use an axial force sensor to detect because The axial force generated on the bolt by the locking of the nut; obtain the sensor output of the axial force sensor; associate the identification information including the surface state of the bolt with the axial force information, and generate it to indicate The graphical output of the comparison of the magnitude of the axial force between the aforementioned bolts.

In order to achieve the above object, one aspect of the locking training program of the present invention is a locking training program executed by the computer of the locking training device, which allows the computer to perform the following functions: obtained by the axial force sensor to be able to lock Set the axial force of a plurality of bolts in the method; make the identification information of each bolt and the detected axial force form a correlation and compare the detected axial force between each bolt.

In order to achieve the above purpose, one aspect of the locking training program of the present invention is a locking training program executed by the computer of the locking training device, which allows the aforementioned computer to perform the following functions: using a locking tool, the surface condition of the screw is different A plurality of bolts are used for nut locking; the axial force sensor is used to obtain the sensor output of the axial force generated on the bolt due to the locking of the nut; the identification information including the surface state of the bolt and its axis The force composition is related, and a comparison graphic output is generated to indicate the magnitude of the axial force of the aforementioned bolts.

The aforementioned locking practice program can allow the aforementioned computer to perform the following functions: calculate the tightening torque from the detected axial force and the identification information of the aforementioned bolt; generate information that contains useful information indicating the magnitude of the aforementioned tightening torque of the aforementioned bolts. The aforementioned comparison graphic output.

In order to achieve the above-mentioned purpose, one aspect of the locking training system of the present invention is a locking training system for locking bolts and nuts, which has: a plurality of bolts arranged in a lockable manner; an axial force sensor , Detect the axial force applied to each bolt; the comparison device makes the identification information of each bolt correlate with the detected axial force obtained by the aforementioned axial force sensor and compare the detected axial force between each bolt.

In order to achieve the above-mentioned object, one aspect of the locking training system of the present invention is a locking training system for training bolts and nuts. It has: a locking training section, which has a plurality of bolts with different surface states of the screws, and Axial force sensor that detects the axial force generated on the aforementioned bolt due to the use of a locking tool to lock the nut; the processing device is connected to the aforementioned axial force sensor to receive the output of the sensor and make the surface containing the aforementioned bolt The status identification information is associated with the detected axial force, and a comparison graphic output representing the magnitude of the axial force between the bolts is generated; a monitor is connected to the processing device to display the comparison graphic output.

According to the present invention, any of the following effects can be obtained.

(1) By displaying the comparison images of the axial forces of bolts and nuts with different surface conditions, the practitioner can recognize the difference in locking force.

(2) By comparing the surface conditions of bolts and nuts, you can learn the adjustment skills of the locking operation in response to the surface conditions.

(3) The bolts and nuts can be locked with appropriate locking force, which can improve the safety of the fastened parts.

(4) By learning the knowledge related to the surface condition and its locking skills, the choice of bolts and nuts can be expanded according to the applicable conditions such as the fastening parts and the working environment.

2: Lock the practice device

4.4-1~4-N: Bolt

6, 6-1~6-N: Nut

8: Locking tool

10.10-1~10-N: Sensor

12: Information Processing Department

14, 32: monitor

20: Lock the practice system

22: Internship Department

24: force gauge

26: Strain gauge

28: PC (Personal Computer)

30: Body part

40: Storage Department

42: Middle board

44: top plate

46, 52, 60: opening

48: Cable

50: feet

54: Outer shell

55: face

56, 63: Through hole

58: Contact

60: opening

62-1~62-4: head

64: processor

66: Memory Department

68: Input operation part

70: Ministry of Communications

72: Input and output part (I/O)

74: Database DB

76: Identification Information

78: Internship Information

F: Axial force

S1~S4, S11~S19, S21~S28: steps

T: Tightening torque

W1, W3: opening width

W2: Diagonal size

W4: forming width

Fig. 1... A diagram showing a configuration example of a locking practice device related to an embodiment.

Figure 2... A flowchart showing an example of the locking practice process.

Figure 3... A diagram showing an example of the comparison graph.

Figure 4... A diagram showing an embodiment of the locking practice system.

Figure 5... A partial cross-sectional view showing an example of the structure of the training department.

Figure 6... A plan view showing the structure of the upper side of the training department.

Figure 7... A diagram showing an example of the appearance of the force measuring device.

Figure 8... A diagram showing an example of the structure of the middle plate.

Figure 9... A diagram showing an example of the configuration of a PC.

Figure 10... A diagram showing an example of the database.

Figure 11... A diagram showing an example of the comparison graph.

Figure 12... shows a flowchart of an example of the locking practice process.

Figure 13... A diagram showing an example of the comparison graph.

Figure 14... shows a flowchart of an example of the locking practice process.

The form used to implement the invention

[One Implementation Type]

Fig. 1 shows a structural example of a locking practice device related to an embodiment. The configuration shown in Fig. 1 is an example, and the invention in this case is not limited to such a configuration.

The locking practice device 2 is an example of a device that senses the locking process of the bolt 4 and the nut 6 by manual locking operation, and can visually grasp the difference in the locking state between a plurality of bolts. The locking practice device 2 has a plurality of bolts 4-1, 4-2,...4-N with different surface conditions, and a plurality of nuts 6-1, 6-2,... with the same surface conditions as the bolts. 6-N. In addition, the locking practice device 2 has sensors 10-1, 10-2,... 10-N, an information processing unit 12 and a monitor 14.

For example, bolts 4-1, 4-2,...4-N and nuts 6-1, 6-2,...6-N are set with identification information based on the type of surface condition, etc., by Identify by such identification information. The locking practice device 2 is provided with bolts 4-1, 4-2,...4-N with different surface states, so that each locking can be sensed and the difference in surface states can be confirmed visually. The surface condition includes, for example, a surface on which a coating film (coating film) made of paint, resin, etc. is formed for imparting functions, and a surface on which lubricating oil is applied before locking. Apply coating film to the normal surface, or because of long time, Rusty surfaces etc. attached to the operating environment. Then, pair and combine the bolts and nuts with the same surface condition, and perform the locking practice using the locking tool 8.

Sensors 10-1, 10-2, ... 10-N are provided on the bolts 4-1, 4-2, ... 4-N to detect the axial force F generated in the axial direction. The axial force F is due to the force generated by the bolts 6-1, 6-2,...6-N tightening the bolts 4-1, 4-2,...4-N, except for the nut 6- The tightening torque of 1, 6-2,...6-N and its tightening amount are also affected by the surface condition of bolts 4-1, 4-2,...4-N. Therefore, it is necessary to adjust the locking method of the nuts 6-1, 6-2,...6-N according to the different surface conditions of the bolts 4-1, 4-2,...4-N. The locking practice device 2 is based on the difference of the surface state, and visually recognizes the sense of the locking degree of the nut 6-1, 6-2,...6-N and its influence.

The information processing unit 12 is an example of the processing equipment of the present disclosure, which obtains the detection information of the sensors 10-1, 10-2...10-N to generate the bolts 4-1, 4-2,...4 -N is an example of the comparison device of the comparison graph for comparing the locked states of each other. The information processing unit 12 is used to make the axial force information from the sensors 10-1, 10-2...10-N and the bolts 4-1, 4-2,...4-N for locking and The identification information of the nuts 6-1, 6-2,...6-N forms a correlation to generate a comparison graph of the axial force F of the bolts 4-1, 4-2,...4-N.

The monitor 14 is an example of the display device of the present disclosure for displaying the comparison graph generated by the information processing unit 12.

Incidentally, the monitor 14 can be, for example, a display device that receives a signal from an external information processing equipment and displays it, or it can be a display device that is integrated with the information processing unit 12 Department.

In addition, bolts 4-1, 4-2, ... 4-N can also be used to withstand the axial direction caused by the locking of nuts 6-1, 6-2, ... 6-N For the method of tensile force (axial force), for example, a member to be fastened (not shown) is provided. That is, the nuts 6-1, 6-2,...6-N do not rotate and move along the threads of the bolts 4-1, 4-2,...4-N to be locked by It suffices to lock the fastened member so that the bolts 4-1, 4-2, ... 4-N are subjected to the axial force F stretched in the axial direction. Regarding the fastened member, for example, in order to make the locking torque and the locking height of the nuts 6-1, 6-2, ... 6-N the same, the same material has the same height.

<Locking training process>

Figure 2 shows an example of locking practice processing. The locking practice processing is an example of the locking practice processing method or the locking practice processing program of the present disclosure, and the present invention is not limited to the processing procedure and processing content.

The information processing unit 12 obtains the identification information of the bolts 4-1, 4-2, ... 4-N to be subjected to the locking practice (S1). The information processing unit 12 may also use the selection of bolts 4-1, 4-2, ... 4-N as an opportunity to read the identification information. For example, the identification information can be read from a database (not shown) previously stored in the memory of the information processing unit 12, or it can be input by the practitioner or the manager using an input device. In addition, the locking practice device 2 can also be obtained by communicating with an external device.

After the nuts 6-1, 6-2...6-N are locked (S2), the output of each sensor of the sensors 10-1, 10-2,...10-N is obtained, and the detection axis is collected Force (S3).

The information processing unit 12 associates the acquired identification information with the axial force F and graphically generates a comparison graphic output for comparing the axial force of each bolt 4-1, 4-2, ... 4-N ( S4).

After generating such a comparison graphic output, for example, the comparison graphic output may be displayed on the monitor 14, or the data may be notified to an external information processing device.

<About the comparison graph>

Figure 3 shows an example of the comparison graph.

The comparison graph shown in Figure 3 is to set the identification information used to identify the bolt on the horizontal axis, and set the detected axial force F on the vertical axis. For example, the identification information is set to bolt A, bolt B, ... bolt N in accordance with the order of tightening bolts 4-1, 4-2, ... 4-N. In this example, the order of tightening is to match the order in which the locking practice device 2 is arranged, and bolt 4-1 is represented by bolt A, bolt 4-2 is represented by bolt B, ... 4-N is represented by bolt N.

The bolts A and B are, for example, the test results of bolts with a high-performance coating that reduces frictional resistance by high lubrication on the bolt surface. In addition, the bolt N, for example, shows the detected axial force of the bolt on a normal metal surface without special coating or lubricating oil. Then, the axial force FA of the bolt A and the axial force FB of the bolt B are detected to be high values, and the axial force FN of the bolt N is detected to be lower than the axial forces FA and FB.

The difference in axial force is the tightening force between bolts and nuts. In other words, it can be known that bolt A and bolt B with large detection axial force are used A stronger tightening force can be obtained, and the bolt N with a small detection axial force has a weaker tightening force than bolt A and bolt B. Therefore, it can be seen that when the bolt N is used, a large force is required to lock the nut.

In addition, if you review it from another point of view, it will be easier to use bolts A and B with low friction resistance and easy to obtain locking strength with additional torque when the locking strength of the fastened parts is set to be low. Adjust the locking. On the contrary, for the bolt N whose locking strength is not easy to obtain, the adjustment of the locking becomes difficult because of the large torque added. The ease of adjustment of the locking will affect the product safety and quality of the fastened parts. In this way, somatosensory is very important in the tightening characteristics of the bolts and nuts used for fastening, and the recognition of the characteristics of the difference between other bolts or nuts. According to the present invention, such practice can be realized. In addition, it is possible to realize the importance of selecting bolts and nuts in consideration of the condition of the object to be fastened and the use environment by taking into account the effect of the locking process caused by the difference in the surface conditions of the bolts and nuts. That is, for example, you can feel the difference in the lockability of the surface condition with rust attached to the body and the surface condition with rust resistance or rust-proof coating, and you can feel the object to be fastened. The use environment to select the importance of bolts and nuts.

<An effect of the implementation form>

According to such a structure, the following effects can be obtained.

(1) It can sense the locking of the nut when the surface conditions of the bolt and the nut are different, and the difference in the axial force due to the locking can be displayed by comparing the images, and this can be visually recognized. Tighten the sense of internship.

(2) You can learn locks that respond to the surface conditions of bolts and nuts Adjustment skills for tight work.

(3) Appropriate locking according to the surface condition can improve the fastening function of the fastened parts such as gaskets, and improve the safety of the fastened parts.

(4) It allows the trainees to realize that the axial force for locking bolts and nuts based on the types of parts to be fastened and the operating environment can be distributed to the best bolts and nuts for the installation conditions.

(5) The trainee can quickly learn how to lock the nut to the bolt, and the skilled person can improve the proficiency of the nut locking operation or improve its correction.

[Example 1]

<Locking Practice System 20>

FIG. 4 is a diagram showing an example of the locking practice system 20. As shown in FIG. The configuration shown in FIG. 4 is an example, and the invention in this case is not limited to such a configuration.

The locking practice system 20 is, for example, as shown in FIG. 4, and has: a practice section 22 having a plurality of bolts 4-1, 4-2, 4-3, 4-4 with different surface conditions, and inspection Force measuring device 24; strain measuring device 26; PC (Personal Computer) 28 for the strain generated by the bolt. The locking practice system 20 is to perform a locking practice to grasp the bolts 4-1, 4-2, 4-3, 4-4 with different surface conditions and the bolts 6-1, 6-2, 6-3, 6- 4 The locked state caused by the locking.

The practice section 22 is an example of a device that senses the locking operation of the nut to the bolt. The load cell 24 and the bolts 4-1, 4-2, 4-3, 4-4 are housed in the housing. part. In addition, on the top side of the practice department 22 The screw part of one end of the bolts 4-1, 4-2, 4-3, and 4-4 is exposed, and the nut 6-1, 6-2, 6-3, and 6-4 are screwed on the exposed part.

The strain gauge 26 is an example of a device that is connected to the force gauge 24 to amplify the strain detection signal of the shaft of the bolt detected by the force gauge 24 and convert the amplified strain detection signal into computer-readable data. The strain measured by the strain gauge 26 is expressed by the axial force F.

The PC 28 is an example of the information processing unit 12 of the present disclosure. The strain gauge 26 obtains the axial force F (strain data) to generate comparison images of the bolts 4-1, 4-2, 4-3, and 4-4. The PC 28 is, for example, a notebook personal computer, and has: a main body 30 with an operation input unit such as information processing functions and a keyboard; and a monitor 32 for displaying comparison images and the like.

Incidentally, as for the PC28, as long as it is a computer that can associate the detected axial force F with the identification information of the bolts and generate a comparison image between the bolts, it can be of any type and is not limited to a notebook PC. . For example, the PC 28 may be a structure in which the main body and the monitor are separated, or on the contrary may be a mobile terminal device in which the monitor and the main body are integrated.

<About the Internship Department 22>

Fig. 5 is a partial cross-sectional view showing an example of the structure of the training department.

The training section 22 forms a storage section 40 inside the outer casing, and stores the bolts 4-1, 4-2, 4-3, and 4-4 and the load cell 24 provided on each bolt. The accommodating portion 40 is an example of the support box of the present disclosure. The bolts 4-1, 4-2, 4-3, and 4-4 are arranged in a row with the load cells 24, and support is provided to prevent these things from being in the housing. The part 40 is displaced inside or detached to the outside. receive The receiving part 40 is provided with a middle plate 42 that places the bolts 4-1, 4-2, 4-3, 4-4 and the force measuring device 24 at a predetermined height inside, so that it is not affected by the ground on which the training part 22 is installed. Affected by parallelism or unevenness. In addition, on the top side of the accommodating portion 40, a top plate 44 is provided so as to cover the upper face of the force gauge 24. The top plate 44 is formed with an opening 52 (FIG. 6) for allowing the front ends of the bolts 4-1, 4-2, 4-3, and 4-4 (the bolts are arranged so that the screw shaft side faces upward) to protrude. Regarding the screw shaft parts of the bolts 4-1, 4-2, 4-3, and 4-4, set the length to be long enough to allow the pairs of nuts 6-1, 6-2, 6-3, and 6-4 to protrude from the top plate 44 Partially lock it.

In addition, the training part 22 has an opening 46 through which the cable 48 of the force measuring device 24 is inserted in a part of the side surface. In addition, on the bottom side of the casing, legs 50 for maintaining the middle plate 42 at a predetermined height are formed on the left and right ends. For example, the leg 50 is formed with a screw hole for fixing to a bottom plate member, a measuring device, etc., not shown. By fixing the training part 22, the trainee can easily perform the locking operation, and can reduce the unnecessary vibration, shaking, or the unevenness of the locking direction when the nut is tightened, and it is not easy to produce the unevenness of the strain detection of the bolt.

Regarding the opening 52 formed on the top plate 44 of the training section 22, for example, as shown in FIG. 6, the opening width W1 is set to be larger than the diagonal of the nut 6-1, 6-2, 6-3, and 6-4. The size W2 is also formed in a wide manner. That is, the locking practice of the nut is to use the locking tool 8 to make the nut 6-1, 6-2, 6-3, and 6-4 penetrate into the opening 52, so that the end surface of the nut contacts the force gauge 24 The upper face side is locked. Therefore, the top plate 44 is formed to be thinner than the longitudinal width of the nut 4-1, 4-2, 4-3, and 4-4, or the opening The width W1 of the portion 52 can be set to a size that the locking tool 8 can be inserted into.

In addition, the top plate 44 is in contact with the upper surface side of the load cell 24 to prevent displacement in the storage portion 40 and detachment from the storage portion 40. The top plate 44 is fixed to the side part of the housing or the foot part 50 by screws arranged in the four corners, for example. Moreover, in order to be able to install or replace the bolts 4-1, 4-2, 4-3, 4-4 and the force measuring device 24 for practice, the top plate 44 is installed so that it can be removed as needed.

Incidentally, in order to fix the installation position of the force measuring device 24, for example, a supporting sheet (not shown) may be formed on the top plate 44 so as to contact the side surface of the force measuring device 24.

<About dynamometer 24>

The force measuring device 24 shown in FIG. 7 is formed in a cylindrical shape, for example, and has an outer casing 54 on the curved side, and a face 55 on the upper and bottom sides. In addition, a through hole 56 for allowing the object to be measured is formed in the center portion, and a contact portion 58 formed along the through hole 56 on the inner periphery of the face 55 with a predetermined width is provided.

The through hole 56 is as mentioned earlier, by allowing the bolts 4-1, 4-2, 4-3, and 4-4 which are the objects to be measured to penetrate through, so as to cover the peripheral surface of the screw shaft. Regarding the opening width W3 of the through-hole 56, for example, the size does not allow the bolt to be displaced inside, and it is set to be equal to or slightly smaller than the nominal diameter of the bolts 4-1, 4-2, 4-3, and 4-4. bigger.

The contact portion 58 is, for example, a cylindrical flexure element arranged along the through hole 56 and has a strain gauge in a portion not shown. The contact part 58 is caused by the nuts 6-1, 6-2, 6-3, and 6-4 that are locked on the bolts. The upper side is squeezed and deformed. The internal strain gauge detects the deformation (strain), and thereby outputs the voltage value corresponding to the deformation. The strain of the contact portion 58 is equivalent to the strain generated in the bolt when the bolt and the nut are locked by the tightened member, and the axial force F acting on the bolt is measured by the voltage value of the strain gauge.

The formation width W4 of the contact portion 58 may be, for example, a width that can be contacted with the nut, and it may be set to be the same as the diagonal distance W2 of the nut.

<About Middle Board 42>

FIG. 8 shows that the middle plate 42 has, for example, an opening 60 formed at the bolt installation position. The opening 60 is, for example, the head 62-1, 62-2, 62-3, 62-4 of the bolt 4-1, 4-2, 4-3, and 4-4, so that the screw shaft is moved toward The upward direction is prominent. In addition, the opening 60 is fitted with the heads 62-1, 62-2, 62-3, 62-4 to prevent the bolts from rotating relative to the nut locking operation, and is formed in a hexagonal shape to prevent the bolts from detaching. The formation interval of the opening 60 is set to be at least wider than the width of the force measuring device 24, and it is sufficient to set it to be easy to perform the nut-locking operation on the adjacent bolts.

For example, in the middle plate 42, two through holes 63 are respectively formed in accordance with the formation positions of the openings 60. The through hole 63 is a hole for arranging a supporting part not shown in the figure, and the force measuring device 24 can be fixedly supported by making the supporting part contact the outer part of the force measuring device 24. Incidentally, the supporting parts are, for example, shaft parts or screw parts that can be engaged with the outer casing of the force measuring device 24.

<PC28>

Fig. 9 shows an example of the configuration of a PC. PC28 has the function of storing the identification information of the bolts 4-1, 4-2, 4-3, 4-4 and the detected axial force F, as well as the function of linking the information to generate a comparison graph, etc.

The PC 28 has, for example, a processor 64, a memory unit 66, an input operation unit 68, a communication unit 70, and an input/output unit (I/O) 72.

The processor 64 performs arithmetic processing for executing the OS (Operating System) located in the memory unit 66 and the locking training program. The calculation processing includes the processing of obtaining the axial force information from the strain gauge 26, reading the input identification information of bolts and nuts, and generating comparison graphics.

The memory unit 66 is used to memorize the OS, locking training programs, identification information, axial force information, etc., and has ROM (Read Only Memory) and RAM (Random Access Memory). It is sufficient to use a storage device such as a hard disk, semiconductor memory, etc., capable of holding the storage content in the storage portion 66. A database (DB) 74 for managing the input identification information and the detected axial force information is formed in the memory portion 66.

The input operation unit 68 is an example of an operation device used for inputting information and the like, for example, a keyboard, a mouse, etc. are used.

The communication unit 70 is controlled by the processor 64, and is used for wireless connection with the strain gauge 26, wireless connection with an external device not shown, and network connection.

The I/O 72 is controlled by the processor 64 for input and output of control information, and is connected to the strain gauge 26 and the monitor 32.

<Database 74>

Figure 10 shows an example of the structure of the database.

The memory unit 66 of the PC 28 is, for example, as shown in FIG. 10, forming a database 74 that stores identification information of bolts used in locking practice, detected axial force information, and the like. The database 74 is, for example, the name of the bolt, the coating information showing the surface state, the information about the number of years of use, the torque coefficient, the size, etc., as the identification information 76. For example, the identification information 76 may be input by the trainee or manager during the locking practice, or may be read information set in advance.

In addition, the database 74 may store the detected axial force value, the calculated torque value, etc. as the practice information 78, for example.

In addition, the memory 66 of the PC 28 may have, for example, an operator database, which includes the information of the operator who received the locking practice and the information of the manager. The operator database is, for example, the ID (IDentification) information and company name information of the locking practice, the operator name information, the date and the type and number of bolts, etc., and the database is compared with the mentioned database. 4 constitute an association. The operator database, for example, is used as information to show whether they have locking experience when selecting bolts and nuts to be used on the actual machine.

Figure 11 shows an example of the comparison graph generated based on the detected axial force. The graph shapes and values shown in Fig. 11 are just examples and are not limited to such contents.

The comparison graph shown in Figure 11 shows the bolt identification information on the horizontal axis and the detected axial force F on the vertical axis as mentioned earlier. In this embodiment, in order to compare the effect of the surface condition on the locking shaft force, a nut The tightening torque values of 6-1, 6-2, 6-3, and 6-4 will be set within the predetermined range for locking practice. The comparison graph also contains such information about the tightening torque. In addition, for example, the torque coefficient information representing the surface condition is displayed in the vicinity of each axial force graph as the identification information of each bolt.

Regarding the detection value of the bolt axial force F displayed in the comparison graph, for example, it can be arranged in accordance with the order of the locking practice, or it can be arranged in accordance with the bolts 4-1 and 4- arranged in the practice section 22. 2, 4-3, 4-4 and show the result.

Therefore, in the comparison graph, the difference in the surface states of bolts A, bolts B, bolts C, and bolts D that lock the nut with the same torque will be represented by the difference in the axial force F that shows the tightening strength.

<Locking treatment>

Fig. 12 shows an embodiment of the locking practice process. The locking training process is an example of the locking training method or locking training program disclosed in this disclosure.

In the locking practice process, the trainee (operator) and the manager select the bolts 4-1, 4-2, 4-3, 4-4 and nuts 6-1, 6-2, 6-3 to be practiced. , 6-4 (S11), set up in the practice department 22. After selecting bolts and nuts, input the identification information of each bolt and nut to PC28 (S12). Regarding the input of identification information, for example, it can be the key input of the information displayed on the body of the bolt or nut or the storage device of the bolt or nut, etc., or the reading of bar code information. In addition, it can also be a combination of a plurality of bolts and nuts that are set in advance for practice, and the identification information linked with the combination information is stored in the database 74.

As preparation for practice, set the operating force to be added to the tool for tightening the nut, that is, the tightening torque value (S13). For example, the tightening torque value can be set according to the nominal diameter of the bolt used in practice. The torque value is, for example, in a way that does not cause bolt damage due to tightening, and the value is different according to the size of the nominal diameter. In the tightening practice, for example, a torque wrench can be used as a tool to measure the tightening torque, or a normal wrench can be used. When using a tool that cannot measure the torque value, for example, instead of setting the specific tightening torque value, the tightening action is set. Regarding the locking action, for example, the force applied to the wrench (tightening torque) relative to the nominal value of the screw is "applying force only on the wrist", "adding force to the part before the elbow", " Add the force of the part in front of the shoulder" ("Valqua Handbook Technical Edition": revised on September 30, 2010, issued by Japan Valqua Industry Co., Ltd., 116 pages) as a rough reference.

After performing the locking process based on the set conditions (S14), the PC 28 obtains the sensor output (S15). The PC 28, for example, integrates the information of the detected axial force F with the identification information of the force measuring device 24 which is the sensor that performs the detection (S16), as a preparation for generating the comparison graph. Through this integration process, PC28 associates the identification of bolts that have undergone locking practice, their locking sequence, and the detected axial force F.

PC28 reads the identification information of bolts and nuts, and associates the identification information with the detected axial force F (S17). In this process, the types of coatings of bolts and nuts, the information of the torque coefficient, etc. used to generate the comparison graph are related to the information of the axial force F.

The acquisition of the axial force F and the integration of the identification information are carried out until the locking practice is completed (S18 "No"). If the locking practice is completed ("Yes" in S18), the related information is used to generate a comparison graph of axial force, and the generated comparison graph is displayed on the monitor 32 (S19).

The comparison graph can be arranged in the order in which the axial force is obtained, or arranged in the order determined in advance. In addition, the generation process of the comparison graph is not limited to be performed after all the locking practice is completed, and the detection of the axial force F can be used as an opportunity to generate the graph in real time and update its display content.

<Effects of Example 1>

(1) It can sense the locking of the nut when the surface conditions of the bolt and the nut are different, and the difference in the axial force due to the locking can be displayed by comparing the images, and this can be recognized visually The sense of locking internship.

(2) You can learn the adjustment skills of the locking operation according to the surface condition of bolts and nuts.

(3) The locking practice of a plurality of bolts can be performed continuously by using a common locking torque, and the body feels the difference in the locking state caused by the surface state, and can be recognized visually by detecting the axial force F The locked state is different.

(4) The structure adopted by the practice section 22 is that the top plate 44 of the housing section can be installed or removed, and the heads of the bolts 4-1, 4-2, 4-3, and 4-4 are engaged in the receiving section. The middle plate 42 is supported, thereby improving the replaceability of the bolts 4-1, 4-2, 4-3, and 4-4.

(5) By enabling the middle plate 42 to be installed or removed from the housing, it is easy to replace bolts and nuts with different nominal diameters, and bolts and nuts with different sizes can be replaced, so it is convenient to lock the practice device promote.

(6) The feet 50 are provided in the training section 22, and the middle plate 42 of the mounting bolt and the force measuring device 24 is separated from the installation surface of the training section 22, thereby reducing the inclination and vibration of the installation surface during the locking process. The impact.

(7) The force gauge 24 is stored in the storage portion 40 of the training section 22, and the upper end 55 of the force gauge 24 contacts the top plate 44 to obtain support, thereby preventing the displacement of the force gauge 24 and can Prevent squeezing and damage caused by contact with the locking tool 8 etc.

[Example 2]

Figure 13 shows a comparison graph related to Example 2.

Figure 13 shows the comparison graph showing the torque value calculated based on the detected axial force F. The second embodiment is, for example, to grasp the effect of the locking process caused by the difference in the surface conditions of the bolt and the nut, and to calculate the torque necessary for the locking of the detected axial force F. The relationship between the axial force F and the tightening torque T is the following formula.

T=kFd...(1)

Incidentally, k is the torque coefficient representing the surface condition, and d is the nominal diameter of the bolt.

In the locking process, for example, the torque is calculated from the detection of the axial force F when the locking amount of bolt A, bolt B, bolt C, and bolt D are the same. Incidentally, in the tightening process, for example, counting the number of tightening times, so that all bolts are tightened the same number of times to make the nut The number of threads passed is the same, and the same locking amount can be achieved. In this way, when the locking amount is the same, the axial force acting on the bolt will be the same value.

For example, the comparison graph shows the identification information of the bolt on the horizontal axis, and the calculated torque value on the vertical axis. In this comparison graph, Bolt A and Bolt B show, for example, a case where a low-friction surface coating is applied, Bolt C shows a case where lubricating oil is applied, for example, and Bolt D shows a case where no coating is applied. An example of the result of the calculation. Compared with bolt C and bolt D, the torque coefficient of the coating of bolt A and bolt B is a small value. Then, if the axial force result caused by the same locking amount is considered, because of the different surface conditions and the magnitude of the torque coefficient, the tightening torque is small when bolt A and bolt B are used. In contrast, bolt C , The tightening torque of bolt D is a large value.

From the result of the comparison graph, it is possible to practice the situation where the torque value necessary for locking is greatly different due to the difference of the surface condition. In other words, it shows the following situation: bolts with high torque coefficients and high-performance coatings can be tightened as long as a small amount of tightening torque is applied. In contrast, bolts with large torque coefficients and surface conditions need to be tightened. The tightening torque is required to perform the necessary tightening.

Incidentally, the torque coefficient information can be displayed in the comparison graph as the identification information of each bolt. In addition, the value of the set axial force F can be displayed in the comparison graph.

<Practice Treatment of Example 2>

Fig. 14 shows an embodiment of the locking practice process.

In the locking practice, select bolts and nuts (S21), set The training department 22 inputs the identification information of its bolts and nuts into the PC 28 (S22). After the preparation for the locking process is completed, the locking process is implemented to make the nut reach the set position as the predetermined locking amount (S23). The PC28 obtains the sensor output of the axial force F by locking (S24), reads the torque coefficient and the nominal diameter of the bolt from the database 74, and calculates the locking torque (S25). Then, the value of the detected axial force F, the calculated torque value T, and the identification information are correlated (S26).

The process of detecting the axial force F and calculating the torque value T is repeated until the locking process is completed ("No" in S27). If the locking process is completed ("Yes" in S27), a comparison graph is generated and displayed on the monitor 32 (S28).

Incidentally, in this second embodiment, for example, when a torque wrench is used as the locking tool 8, the detected torque value of the torque wrench may be obtained and given to the PC 28, and the detected torque value and the calculated torque Comparison of the value T.

<Effects of Example 2>

Calculate the tightening torque value by using the detected axial force, and compare the bolts with each other. This can correspond to the difference in the surface state of the bolts and the body-feeling tightening force. The comparison result can be displayed. Visually recognize the strength of the force.

[Modifications]

With respect to the embodiments and examples described above, modified examples are listed below.

(1) Although the above embodiments or examples show The identification information of the surface state of the screw, such as the type of coating, the torque coefficient, etc., is the locking process of the bolt that has been grasped, but it is not limited to this. As long as you select more than two types of bolts and nuts with different screw surface conditions, and practice the comparison of the body feel of the locking operation and the detection of the axial force. According to such a structure, it is possible to learn the locking technology of nuts with different surface conditions, and to compare the locking status of the selected bolts and nuts, and the effects of the surface conditions.

(2) It is also possible to add temperature conditions to the locking practice for locking practice. The locking practice device 2 can be, for example, a heating device and a temperature detecting device in the housing, heating the bolts 4-1, 4-2, ... 4-N, and performing axial force F relative to a predetermined temperature condition的测。 The test. In addition, the locking practice process is, for example, setting one or more temperature conditions, adding elements of the temperature conditions, and comparing the axial force between the bolts. By performing the locking practice while heating the surface in this way, you can feel the changes in the surface state in response to the temperature conditions. In addition, in the selection of bolts and nuts, you can also practice the importance of thermal characteristics relative to the type of coating.

(3) Although the above-mentioned embodiments and examples show a comparison graph in which the axial force F and the identification information constitute a correlation, it is not limited to this. For example, the comparison graph can also display the comparison result of the evaluation information. The comparison result of the evaluation information is used to indicate whether the axial force detected between a plurality of bolts is a sufficient value. The comparison graph, for example, includes the information of the evaluation criterion and the evaluation information together with the information of the detected axial force F. For example, PC28 first memorizes the reference axial force as the evaluation threshold in the memory unit 66, and performs the evaluation of the detected axial force during the generation of the comparison graph, and Generate evaluation information that expresses the evaluation results in graphs, text, numerical values, etc. In addition, the PC 28 may display suggestion information in addition to the evaluation information. The aforementioned suggestion information is used to indicate insufficient or excessive axial force values and increase or decrease of the tightening torque corresponding to the axial force values.

(4) Although the above embodiment shows the case where only the bolt and the nut are tightened to detect the axial force, it is not limited to this. For example, the locking practice device of the present invention can be used to clamp flanges and gaskets in cooperation with the actual locking machine, and lock the flanges and gaskets with bolts and nuts to detect the shaft of the bolt in this state. force. In this case, in order to detect the axial force of the bolt, a sensor other than the force measuring device 24 can be used. According to such a structure, the operator can add the influence caused by the material and size of the flange and the gasket, and the body feeling caused by the difference in the surface condition of the bolt, and can be recognized by comparing the graphics.

(5) For example, the locking treatment of the present invention can be to apply torque until any bolt breaks, and compare the axial force F when any bolt breaks. According to this practice, you can feel the difficulty of locking caused by the different surface conditions, and the importance of the locking operation according to the surface conditions.

As described above, the best embodiment of the present invention has been described. The present invention is not limited to the above description. The industry can make various modifications and changes based on the gist of the invention described in the scope of the patent application or disclosed in the form used to implement the invention. Such deformations and changes are of course included in the scope of the present invention.

Industrial availability

According to the present invention, for a plurality of snails with different surface conditions Bolt, make the identification information indicating its surface state correlate with the detected axial force of the lock. It can sense the magnitude of the axial force between bolts and recognize its influence visually, which can be caused by the difference in surface state. The selection of bolts and the improvement of their locking skills.

2‧‧‧Locking practice device

4. 4-1~4-N‧‧‧Bolt

6, 6-1~6-N‧‧‧Nut

8‧‧‧Locking tool

10.10-1~10-N‧‧‧Sensor

12‧‧‧Information Processing Department

14‧‧‧Monitor

F‧‧‧Axial force

Claims (14)

A locking practice device, which is characterized by comprising: a plurality of bolts with different surface states of the screws, which are arranged in a lockable manner; an axial force sensor, which detects the axial force applied to each bolt; and a processing device that allows identification of each bolt. The identification information of the bolts is associated with the detected axial force, and a comparison graphic output for comparing the detected axial force between each bolt is generated. A locking practice device, which is characterized by comprising: a plurality of bolts with different surface states of the screws; an axial force sensor that detects the axial force generated on the aforementioned bolts due to the use of a locking tool to lock the nut; processing equipment, Receives the sensor output from the aforementioned axial force sensor, associates the identification information including the surface state of the aforementioned bolt with the detected axial force, and generates a comparison graph representing the magnitude of the axial force between the aforementioned bolts Output. For example, the locking practice device of claim 2 further includes: a display device, which is connected to the aforementioned processing device, and displays the aforementioned comparison graphic output received from the aforementioned processing device. For example, the locking practice device of claim 2 or 3 has a support box that arranges a plurality of the aforementioned bolts in a row, and accommodates the aforementioned bolts and the aforementioned axial force sensor for support; the aforementioned processing equipment is in response to this The bolts are arranged in the support box to generate the comparison graphic output arranged with the identification information. For example, the locking practice device of claim 2 or 3 has a memory unit that memorizes the aforementioned identification information of the aforementioned bolts; the aforementioned processing equipment uses the detection of the axial force as an opportunity to read the detected information from the aforementioned memory unit The aforementioned identification information of the aforementioned bolts, and the aforementioned comparison graphic output is generated. For example, the locking practice device of claim 2 or 3, wherein the identification information includes a torque coefficient indicating the surface condition of the bolt; the processing equipment is to make the torque coefficient correlate and express the axial force output of the comparison graph . For example, the locking practice device of claim 2 or 3, wherein the processing device calculates the locking torque from the detected axial force and the identification information of the bolts, and generates the magnitude including the locking torque of the bolts. The aforementioned comparison graphic output of the displayed information. A locking practice method, which is characterized by including the following steps: setting a plurality of bolts with different surface states of the screws in a lockable manner; detecting the axial force applied to each bolt with an axial force sensor; The identification information is associated with the detected axial force, and a comparison graphic output for comparing the detected axial force between each bolt is generated. A locking practice method, which is characterized by comprising the following steps: using a locking tool to lock a plurality of bolts with different surface states of the screws; Use an axial force sensor to detect the axial force generated on the bolt due to the locking of the nut; obtain the sensor output of the axial force sensor; make the identification information including the surface state of the bolt and its axial force information The correlation is formed, and a comparison graphic output representing the magnitude of the axial force of the aforementioned bolts is generated. A locking training program is a locking training program executed by the computer of the locking training device, which is characterized by allowing the aforementioned computer to perform the following functions: obtain the surface of the screw set in a lockable manner by an axial force sensor The axial forces of a plurality of bolts with different states; the identification information of identifying each bolt is associated with the detected axial force, and a comparison graph output for comparing the detected axial force between each bolt is generated. A locking training program is a locking training program executed by the computer of the locking training device, which is characterized in that the aforementioned computer executes the following functions: the axial force sensor is used to obtain the results generated on the aforementioned bolt due to the locking of the nut Axial force sensor output, the aforementioned nut is locked using a locking tool with respect to a plurality of bolts with different surface states of the screw; the identification information including the surface state of the aforementioned bolt is associated with its axial force, and generated The output of the comparison graph that shows the magnitude of the axial force of the aforementioned bolts. For example, the locking practice program of claim 11, which allows the aforementioned computer to perform the following functions: the detection of the aforementioned axial force and the aforementioned bolt knowledge Calculate the tightening torque with different information; generate the aforementioned comparison graph output including useful information to indicate the magnitude of the aforementioned tightening torque of the aforementioned bolts. A locking training system is a locking training system for locking bolts and nuts. It is characterized by comprising: a plurality of bolts with different surface states of the screws, which are arranged in a lockable manner; an axial force sensor, Detect the axial force applied to each bolt; processing equipment to associate the identification information of each bolt with the detected axial force obtained by the aforementioned axial force sensor and generate a comparison to compare the detected axial force between each bolt Graphical output. A locking training system, which is a locking training system for locking bolts and nuts, is characterized by comprising: a locking training section, which has a plurality of bolts with different surface states of the screws; and an axial force sensor, which detects The axial force generated on the aforementioned bolt due to the use of a locking tool to lock the nut; the processing device is connected to the aforementioned axial force sensor, and receives the sensor output, so that the identification information and detection including the surface state of the aforementioned bolt The axial forces are related to each other, and a comparison graphic output representing the magnitude of the axial forces of the bolts is generated; a monitor is connected to the processing device to display the comparison graphic output.

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