Calibration control method and system for a clamping force measuring device

Abstract

The present disclosure relates to a kind of calibrating control method and system of clamping force measuring device, the method includes: in the case where head mould assembly is contained in the first through opening of calibration fixture, control adjusting mechanism drives each head mould to move to corresponding predetermined position, so that each head mould is with the inner wall of first through opening resistance;Actual clamping force value collected by each pressure sensor is obtained, corresponding actual clamping force value is based on the inner wall of first through opening generated when corresponding head mould is resistance;Each pre-stored clamping force value is obtained, corresponding pre-stored clamping force value is the pressure value collected by corresponding pressure sensor when head mould assembly is contained in first through opening and corresponding head mould moves to corresponding predetermined position before clamping force measuring device leaves factory;According to each actual clamping force value and corresponding pre-stored clamping force value, the pressure compensation value of corresponding pressure sensor is determined;According to the pressure compensation value of each pressure sensor, the pressure value collected by corresponding pressure sensor in subsequent use of clamping force measuring device is adjusted.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of calibrating a clamping force measuring device, and more particularly, to a calibrating control method and system for a clamping force measuring device. BACKGROUND

[0002] The clamping force measuring device is a high-precision testing equipment, which is used for measuring the clamping force of a head-mounted device. The precision of the clamping force measuring device is extremely high. The precision of such a high-precision device is easily affected. In order to avoid the device precision being lower than the factory precision due to transportation, harsh use environment or improper use of the user, and further affecting the test results of the user, a calibration method for the clamping force measuring device needs to be proposed. SUMMARY

[0003] An object of the present disclosure is to provide a new technical solution of a calibrating control method for a clamping force measuring device.

[0004] According to a first aspect of the present disclosure, a calibrating control method for a clamping force measuring device is provided, the clamping force measuring device comprising a head module assembly, an adjusting mechanism and at least one pressure sensor, the head module assembly comprising at least one head module, the method comprising:

[0005] controlling the adjusting mechanism to drive each head module to move to a corresponding predetermined position so that each head module abuts against an inner wall of a first through opening of a calibration fixture when the head module assembly is accommodated in the first through opening of the calibration fixture;

[0006] obtaining actual clamping force values collected by each pressure sensor, the actual clamping force values being generated based on the corresponding head module abutting against the inner wall of the first through opening of the calibration fixture;

[0007] obtaining each pre-stored clamping force value, the pre-stored clamping force value being a pressure value collected by the corresponding pressure sensor when the head module assembly is accommodated in the first through opening of the calibration fixture and the corresponding head module moves to the corresponding predetermined position before the clamping force measuring device is shipped from factory;

[0008] determining a pressure compensation value of the corresponding pressure sensor according to each actual clamping force value and the corresponding pre-stored clamping force value;

[0009] adjusting a pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device according to the pressure compensation value of each pressure sensor.

[0010] Optionally, the adjusting a pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device according to the pressure compensation value of each pressure sensor comprises:

[0011] add the corresponding pressure compensation value and the pressure value collected by the corresponding pressure sensor in the subsequent use of the clamping force measuring device to obtain the adjusted pressure value collected by the corresponding pressure sensor in the subsequent use of the clamping force measuring device.

[0012] Optionally, the control of the adjustment mechanism to drive each head die to move to the corresponding predetermined position comprises:

[0013] obtaining the identification information of the head die assembly;

[0014] determining the preset size of the head die assembly according to the mapping relationship between the head die assembly and the preset size and the identification information of the head die assembly;

[0015] controlling the adjustment mechanism to drive each head die to move to the corresponding predetermined position according to the preset size of the head die assembly.

[0016] Optionally, the clamping force measuring device comprises a first pressure sensor and a second pressure sensor, and the head die assembly comprises a first head die and a second head die, wherein,

[0017] the control of the adjustment mechanism to drive each head die to move to the corresponding predetermined position so that each head die abuts against the inner wall of the first through hole, and the actual clamping force value collected by each pressure sensor is obtained, and the corresponding actual clamping force value is generated based on the abutting of the corresponding head die against the inner wall of the first through hole, comprises:

[0018] controlling the adjustment mechanism to drive the first head die and the second head die to move to the corresponding predetermined position in the first direction in opposite directions so that the first head die and the second head die both abut against the inner wall of the first through hole;

[0019] obtaining a first actual clamping force value collected by the first pressure sensor and a second actual clamping force value collected by the second pressure sensor, wherein the first actual clamping force value is generated based on the abutting of the first head die against the inner wall of the first through hole, and the second actual clamping force value is generated based on the abutting of the second head die against the inner wall of the first through hole.

[0020] Optionally, the clamping force measuring device further comprises a third pressure sensor, and the head die assembly further comprises a third head die, wherein,

[0021] the control of the adjustment mechanism to drive each head die to move to the corresponding predetermined position so that each head die abuts against the inner wall of the first through hole, and the actual clamping force value collected by each pressure sensor is obtained, and the corresponding actual clamping force value is generated based on the abutting of the corresponding head die against the inner wall of the first through hole, comprises:

[0022] The adjustment mechanism is controlled to drive the third head die to move along a second direction to a corresponding predetermined position, so that the third head die abuts against the inner wall of the first through hole, and the second direction is perpendicular to the first direction.

[0023] A third actual clamping force value collected by the third pressure sensor is acquired, and the third actual clamping force value is based on the abutment of the third head die against the inner wall of the first through hole.

[0024] According to a second aspect of the present application, there is provided a clamping force measuring device calibration system, comprising a calibration device and a clamping force measuring device calibration control device, wherein,

[0025] The clamping force measuring device calibration control device is configured to perform the method according to any one of the first aspect.

[0026] Optionally, the calibration device comprises a calibration platform and a calibration clamp, the calibration clamp is arranged on the calibration platform, the calibration platform has a containing cavity therein, the containing cavity is configured to contain part of the adjustment mechanism, and the calibration clamp has a first through hole configured to contain the head die assembly.

[0027] Optionally, the calibration device further comprises a positioning member, the calibration clamp further has a second through hole, the second through hole is arranged along a second direction with the first through hole, the second direction is perpendicular to the first direction, and the positioning member is arranged in the second through hole, and the first direction is the movement direction of the first head die and the second head die under the driving of the adjustment mechanism when the head die assembly comprises the first head die and the second head die.

[0028] Optionally, along the second direction, the second through hole is coaxially arranged with the first through hole.

[0029] And / or, along the second direction, the second through hole is arranged in axial symmetry with the first through hole; and / or, the shape of the second through hole is different from the shape of the first through hole.

[0030] According to a third aspect of the present application, there is provided a clamping force measuring system, comprising a clamping force measuring device and a clamping force measuring device calibration system according to any one of the second aspect, wherein,

[0031] The clamping force measuring device comprises a head die assembly, an adjustment mechanism and at least one pressure sensor.

[0032] The present disclosure provides a clamping force measuring device calibration control method, in the case that the head die assembly is accommodated in the first through opening of the calibration fixture, the adjusting mechanism drives each head die to move to the corresponding predetermined position, so that each head die is in abutment with the inner wall of the first through opening, the actual clamping force value collected by each pressure sensor is obtained, the corresponding pressure sensor pressure compensation value is determined according to the corresponding actual clamping force value and the corresponding pre-stored clamping force value, and the pressure value collected by the corresponding pressure sensor in the subsequent use of the clamping force measuring device is adjusted according to the pressure compensation value of each pressure sensor. The rapid and high-precision calibration and calibration of each pressure sensor at the user end can be automatically realized, the accuracy requirements of the clamping force measuring device in subsequent test tasks are met, in addition, the time spent by the user in returning the clamping force measuring device to the factory for calibration after the accuracy of the clamping force measuring device decreases is reduced, the cost of calibration of the clamping force measuring device is saved, and the maintainability and actual application efficiency of the clamping force measuring device are improved.

[0033] The features of the embodiments of the present disclosure, and the advantages thereof, will become more apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0035] Figure 1 FIG. 1 is a flow diagram of a clamping force measuring device calibration control method according to an embodiment of the present disclosure.

[0036] Figure 2 FIG. 2 is a partial device schematic diagram of a clamping force measuring device calibration system according to an embodiment of the present disclosure.

[0037] Figure 3 FIG. 3 is a partial device schematic diagram of a clamping force measuring device calibration system according to an embodiment of the present disclosure.

[0038] Figure 4 FIG. 4 is a partial device schematic diagram of a clamping force measuring device calibration system according to an embodiment of the present disclosure.

[0039] Figure 5 FIG. 5 is a schematic diagram of a head die assembly according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0041] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the description of embodiments of the present specification and its applications or uses.

[0042] It is to be noted that like-numbered terms and / or components throughout the figures denote like elements, and thus further discussion of the same will not be repeated.

[0043] To solve the above technical problems, the present disclosure provides a clamping force measuring device calibration control method. In a case where a head mold assembly is accommodated in a first through hole of a calibration fixture, a control adjustment mechanism drives each head mold to a corresponding predetermined position, so that each head mold is in abutment with the inner wall of the first through hole. Actual clamping force values collected by each pressure sensor are obtained. A pressure compensation value of a corresponding pressure sensor is determined according to a corresponding actual clamping force value and a corresponding pre-stored clamping force value. The pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device is adjusted according to the pressure compensation value of each pressure sensor. The rapid and high-precision calibration and calibration of each pressure sensor at the user end can be automatically realized. The accuracy requirements of the clamping force measuring device in subsequent test tasks are met. In addition, the time spent by the user in returning the clamping force measuring device to the factory for calibration after the accuracy of the clamping force measuring device decreases is reduced. The calibration of the clamping force measuring device is saved, and the maintainability and actual application efficiency of the clamping force measuring device are improved.

[0044] In one embodiment of the present disclosure, a clamping force measuring device calibration control method is provided for calibrating a clamping force measuring device.

[0045] The clamping force measuring device includes a head mold assembly, an adjustment mechanism, and at least one pressure sensor.

[0046] The adjustment assembly is used to adjust the size of the head mold assembly, such as at least one of the head length, the head width, and the head height.

[0047] The head mold assembly includes at least one head mold. For example, the head mold assembly includes a left head mold and a right head mold. For example, the head mold assembly includes a left head mold, a right head mold, and a front head mold. For example, the head mold assembly includes a left head mold, a right head mold, a front head mold, and an upper head mold. The relative positions of the plurality of head molds can be adjusted to achieve size adjustment of the head mold assembly.

[0048] The clamping force measuring device is used to detect the clamping force received by the head mold assembly in a case where the head mold assembly wears a head-mounted device. The clamping force can be at least one of the pressure received by the left side of the head mold assembly, the pressure received by the right side of the head mold assembly, and the pressure received by the front side of the head mold assembly.

[0049] According to Figure 1As shown, the clamping force measuring device calibration control method of the embodiment includes steps S110-S140.

[0050] In step S110, when the head mold assembly is accommodated in the first through hole of the calibration fixture, the adjusting mechanism is controlled to drive each head mold to the corresponding predetermined position so that each head mold abuts against the inner wall of the first through hole.

[0051] The calibration fixture is a standard component. The calibration fixture is not easy to deform after being moved, transported or frequently used, so as to ensure the accuracy of the calibration of the clamping force measuring device.

[0052] Here, the abutment refers to the extrusion force generated between the head mold and the inner wall of the first through hole.

[0053] In some embodiments, step S110 specifically includes steps S111-S113.

[0054] In step S111, the identification information of the head mold assembly is obtained.

[0055] The identification information of the head mold assembly is identified by the head mold assembly identification recognition module.

[0056] The identification information of the head mold assembly can be any of a bar code and a two-dimensional code. The head mold assembly identification recognition module can be a scanning device to identify the identification information of the head mold assembly.

[0057] In this way, the same standard fixture can be used to calibrate different types of clamping force measuring devices, and the type of the clamping force measuring device is the type of the head mold assembly, which is designed based on the head shape of different races. The races are determined based on different geographical regions.

[0058] In step S112, the preset size of the head mold assembly is determined according to the mapping relationship between the head mold assembly and the preset size, and the identification information of the head mold assembly.

[0059] The mapping relationship between the identification of the head mold assembly and the preset size can be a mapping table.

[0060] In step S113, the adjusting mechanism is controlled to drive each head mold to the corresponding predetermined position according to the preset size of the head mold assembly.

[0061] According to the adjusting mechanism, the size of the head mold assembly can be automatically adjusted.

[0062] In step S120, the actual clamping force values collected by each pressure sensor are obtained, and the corresponding actual clamping force values are based on the abutment between the corresponding head mold and the inner wall of the first through hole.

[0063] In step S130, the pre-stored clamping force values are obtained. The pre-stored clamping force values are pressure values collected by the corresponding pressure sensors when the head mold assembly is accommodated in the first opening and the corresponding head mold moves to the corresponding predetermined position before the clamping force measuring device is shipped.

[0064] The pressure values collected by the pressure sensors built in the clamping force measuring device before the clamping force measuring device is shipped are standard and accurate. Therefore, the pre-stored clamping force values can be used as a standard value for subsequent calibration of the clamping force measuring device.

[0065] In step S140, the pressure compensation values of the corresponding pressure sensors are determined according to each actual clamping force value and the corresponding pre-stored clamping force value.

[0066] The pressure compensation values of the corresponding pressure sensors are obtained by subtracting the actual clamping force value from the corresponding pre-stored clamping force value. The value obtained by subtracting the actual clamping force value from the pre-stored clamping force value can be positive, negative or zero.

[0067] In step S150, the pressure values collected by the corresponding pressure sensors in subsequent use of the clamping force measuring device are adjusted according to the pressure compensation values of the corresponding pressure sensors.

[0068] In some embodiments, step S150 specifically includes adding the corresponding pressure compensation value to the pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device to obtain the adjusted pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device.

[0069] In some embodiments, the clamping force measuring device includes a first pressure sensor and a second pressure sensor. The head mold assembly includes a first head mold and a second head mold. The first head mold is a left head mold, and the second head mold is a right head mold.

[0070] In this embodiment, steps S110 and S120 include controlling the adjusting mechanism to drive the first head mold and the second head mold to move in opposite directions along the first direction to the corresponding predetermined positions so that the first head mold and the second head mold are both in abutment with the inner wall of the first opening. The first actual clamping force value collected by the first pressure sensor and the second actual clamping force value collected by the second pressure sensor are obtained, wherein the first actual clamping force value is based on the pressure generated when the first head mold is in abutment with the inner wall of the first opening, and the second actual clamping force value is based on the pressure generated when the second head mold is in abutment with the inner wall of the first opening. That is, the first pressure sensor is used to collect the pressure generated when the first head mold moves to the corresponding predetermined position and is in abutment with the inner wall of the first opening. The second pressure sensor is used to collect the pressure generated when the second head mold moves to the corresponding predetermined position and is in abutment with the inner wall of the first opening.

[0071] In the embodiment, a first actual clamping force value collected by the first pressure sensor and a second actual clamping force value collected by the second pressure sensor are obtained. A first pre-stored clamping force value and a second pre-stored clamping force value are obtained. The first pre-stored clamping force value is a pressure value collected by the first pressure sensor before the clamping force measuring device is shipped from factory, when the head module assembly is accommodated in the first through hole and the first head module moves to a first predetermined position along the first direction. The second pre-stored clamping force value is a pressure value collected by the second pressure sensor before the clamping force measuring device is shipped from factory, when the head module assembly is accommodated in the first through hole and the second head module moves to a second predetermined position along the first direction. According to the first pre-stored clamping force value and the first actual clamping force value, a pressure compensation value corresponding to the first pressure sensor is determined. The pressure value collected by the first pressure sensor in subsequent use of the clamping force measuring device is adjusted according to the pressure compensation value collected by the first pressure sensor. According to the second pre-stored clamping force value and the second actual clamping force value, a pressure compensation value corresponding to the second pressure sensor is determined. The pressure value collected by the second pressure sensor in subsequent use of the clamping force measuring device is adjusted according to the pressure compensation value collected by the second pressure sensor.

[0072] The embodiment can simultaneously calibrate the first pressure sensor and the second pressure sensor of the clamping force measuring device, so that the pressure values collected by the first pressure sensor and the second pressure sensor in subsequent use of the clamping force measuring device are more accurate.

[0073] In some embodiments, the clamping force measuring device further comprises a third pressure sensor, and the head module assembly further comprises a third head module. Steps S110 and S120 comprise: controlling the adjusting mechanism to drive the third head module to move to a corresponding predetermined position along a second direction, so that the third head module abuts against the inner wall of the first through hole, and the second direction is perpendicular to the first direction; and obtaining a third actual clamping force value collected by the third pressure sensor, wherein the third actual clamping force value is based on the abutting of the third head module against the inner wall of the first through hole.

[0074] The first head module is a left head module, the second head module is a right head module, and the third head module is a front head module. The first head module and the second head module can move to corresponding predetermined positions along the first direction in opposite directions, so that the first head module and the second head module both abut against the inner wall of the first through hole. The third head module can move to a corresponding predetermined position along a second direction, so that the third head module abuts against the inner wall of the first through hole, and the second direction is perpendicular to the first direction. The first pressure sensor is configured to collect a pressure based on the abutting of the first head module against the inner wall of the first through hole when the first head module moves to the corresponding predetermined position. The second pressure sensor is configured to collect a pressure based on the abutting of the second head module against the inner wall of the first through hole when the second head module moves to the corresponding predetermined position. The third pressure sensor is configured to collect a pressure based on the abutting of the third head module against the inner wall of the first through hole when the third head module moves to the corresponding predetermined position.

[0075] In the embodiment, the first actual clamping force value collected by the first pressure sensor, the second actual clamping force value collected by the second pressure sensor, and the third actual clamping force value collected by the third pressure sensor are obtained. The first pre-stored clamping force value, the second pre-stored clamping force value, and the third pre-stored clamping force value are obtained. The first pre-stored clamping force value is a pressure value collected by the first pressure sensor before the clamping force measuring device is shipped from factory, when the head module assembly is accommodated in the first through hole and the first head module moves to the first predetermined position along the first direction. The second pre-stored clamping force value is a pressure value collected by the second pressure sensor before the clamping force measuring device is shipped from factory, when the head module assembly is accommodated in the first through hole and the second head module moves to the second predetermined position along the first direction. The third pre-stored clamping force value is a pressure value collected by the third pressure sensor before the clamping force measuring device is shipped from factory, when the head module assembly is accommodated in the first through hole and the third head module moves to the third predetermined position along the second direction. According to the first pre-stored clamping force value and the first actual clamping force value, the pressure compensation value corresponding to the first pressure sensor is determined. According to the pressure compensation value collected by the first pressure sensor, the pressure value collected by the first pressure sensor in subsequent use of the clamping force measuring device is adjusted. According to the second pre-stored clamping force value and the second actual clamping force value, the pressure compensation value corresponding to the second pressure sensor is determined. According to the pressure compensation value collected by the second pressure sensor, the pressure value collected by the second pressure sensor in subsequent use of the clamping force measuring device is adjusted. According to the third pre-stored clamping force value and the third actual clamping force value, the pressure compensation value corresponding to the third pressure sensor is determined. According to the pressure compensation value collected by the third pressure sensor, the pressure value collected by the third pressure sensor in subsequent use of the clamping force measuring device is adjusted.

[0076] The embodiment can simultaneously calibrate the first pressure sensor, the second pressure sensor, and the third pressure sensor of the clamping force measuring device, so that the pressure values collected by the first pressure sensor, the second pressure sensor, and the third pressure sensor in subsequent use of the clamping force measuring device are more accurate.

[0077] An embodiment of the present application provides a clamping force measuring device calibration system. The calibration system comprises a calibration device and a clamping force measuring device calibration control device. The clamping force measuring device calibration control device is used to execute the calibration control method provided in any of the above embodiments.

[0078] The calibration device is used to calibrate the pressure sensor of the clamping force measuring device, and the clamping force measuring device comprises a head module assembly and an adjusting mechanism, the adjusting mechanism comprises a first support and a second support, and at least the first support is connected with the first pressure sensor.

[0079] As shown in Figures 2 to 4 The calibration device 3 provided by the embodiment of the present application comprises:

[0080] The calibration platform 31 and the calibration fixture 32 are provided on the calibration platform 31. The calibration platform 31 has a receiving chamber that is configured to accommodate part of the adjustment mechanism 2. The calibration fixture 32 has a first opening 321 that is configured to accommodate the head mold assembly 1.

[0081] When the first support member 22 moves to a predetermined position along the first direction, the first head mold 12 that cooperates with the first support member 22 can abut against the inner wall of the first opening 321.

[0082] Specifically, the head model assembly 1 may include a first head model 12 and a second head model 11 arranged opposite to each other along a first direction, i.e., the Y direction in the figure. In this embodiment, the shape and size of the first head model 12 and the second head model 11 are designed according to the actual needs of simulating the head-mounted device. Their surface smoothness, curvature, and other parameters can be set to be similar to those of a real human head to improve the accuracy and reliability of the calibration results.

[0083] The first head mold 12 and the second head mold 11 can be made of high-strength, low-deformation materials, such as aluminum alloy or engineering plastics. These materials have sufficient rigidity and are not easily deformed when subjected to clamping force, thus ensuring the stable transmission and accurate measurement of clamping force during calibration.

[0084] like Figure 5 As shown, a first head mold 12 and a second head mold 11 can be joined together to form a human head model contouring structure; as shown... Figure 2 As shown, the first head mold 12, the second head mold 11, the front head mold 13 and the upper head mold 14 can also be set together to form a human head model contour structure.

[0085] like Figure 4 As shown, the base 21 is the basic support component of the adjustment mechanism 2, which provides a stable mounting platform for the first support member 22 and the second support member. The base 21 can be made of metal plate with a certain thickness, such as stainless steel or carbon steel, to ensure that it has sufficient strength and rigidity to withstand the various forces generated by the first support member 22 during movement without significant deformation or vibration.

[0086] like Figure 4 As shown, the first support member 22 and the second support member are respectively disposed on the base 21 and arranged along the first direction, which is also the Y direction in the figure. The first direction is the arrangement direction of the first head mold 12 and the second head mold 11. This allows the first support member 22 to cooperate with the first head mold 12 and the second support member to cooperate with the second head mold 11, for supporting and driving the head mold assembly 1 to move along the first direction.

[0087] Specifically, a first driving member can be arranged, which is a motor or a pneumatic cylinder. A driving end of the first driving member is drivingly connected with the first support 22, so that the first driving member can drive the first support 22 to move in the first direction, thereby achieving the position adjustment of the first head die 12.

[0088] In this way, the first pressure sensor can be arranged on the first support 22, for example, embedded in the first support 22 or mounted on a side of the first support 22 close to the first head die 12, so that the first pressure sensor can be used to measure the pressure between the first support 22 and the first head die 12 in real time, which is the clamping force of the first head die 12.

[0089] As shown in Figures 2 to 4 The calibration platform 31 is a main part of the calibration device 3 and provides stable support for the entire calibration device. The calibration platform 31 can adopt a metal frame structure with a certain thickness, such as a steel frame, so as to have sufficient strength and rigidity to withstand the weight of the adjustment mechanism 2 and the head die assembly 1 and various forces generated during the calibration process.

[0090] The surface of the calibration platform 31 can be flat and provided with a plurality of mounting holes and positioning grooves for mounting and fixing the calibration fixture 32 and the adjustment mechanism 2. The bottom of the calibration platform 31 can also be provided with adjustable legs, and the levelness of the calibration platform 31 can be adjusted by adjusting the height of the adjustable legs, so as to ensure that the entire calibration device works in a horizontal state, thereby improving the accuracy of the calibration.

[0091] As shown in Figures 2 to 4 The calibration fixture 32 can be fixed on the calibration platform 31, and part of the adjustment mechanism 2 is located in the accommodating chamber of the calibration platform 31, so that the calibration platform 31 can accommodate and protect the relevant structures of the adjustment mechanism 2, which helps to ensure the working reliability of the adjustment mechanism 2. The calibration fixture 32 has a first through opening 321 for accommodating the head die assembly 1.

[0092] The calibration fixture 32 can be made of high-strength and high-hardness materials, such as cemented carbide or ceramics, so as to ensure that it is not easy to deform or be damaged during the calibration process. The shape and size of the first through opening 321 can be designed according to the shape of the head die assembly 1, and the shape includes but is not limited to a circle, a rectangle, and an ellipse. An appropriate gap is formed between the first through opening 321 and the head die assembly 1, so that the head die assembly 1 can move smoothly in the first through opening 321 and also play a certain guiding and positioning role for the movement of the head die assembly 1.

[0093] When the first support 22 moves to the predetermined position along the first direction, i.e. the Y direction in the figure, the first head die 12 abuts against the inner wall of the first through hole 321, so that the inner wall of the first through hole 321 can apply a certain extrusion force to the first support 22. At this time, the first pressure sensor connected to the first support 22 can measure the extrusion force, i.e. the clamping force between the first head die 12 and the inner wall of the first through hole 321, and obtain a measurement value, which is compared with a known extrusion force value for calibration and adjustment of the first pressure sensor, which helps to ensure the reliability of the clamping force test. In addition, the calibration operation can be repeated multiple times, and the average value of multiple measurement data is taken to improve the accuracy and reliability of the calibration.

[0094] In this way, the design of the first through hole 321 of the calibration fixture 32 can provide a stable and fixed boundary condition for the calibration of the clamping force. This stable measurement environment reduces the interference of external factors such as vibration and shaking on the clamping force calibration, further improving the accuracy and repeatability of the calibration.

[0095] The predetermined position of the first support 22 is the adjustment position required by the first head die 12. The inner wall of the first through hole 321 is adapted to the first head die 12, so that the first support 22 is located at the predetermined position when the two abut against each other.

[0096] Optionally, the first through hole 321 has a first inner wall and a second inner wall opposite to each other along the first direction, the first inner wall is configured to abut against the first head die 12, and the second inner wall is configured to abut against the second head die 11 opposite to the first head die 12 along the first direction.

[0097] Specifically, the second head die 11 can be arranged to always abut against the second inner wall of the first through hole 321 during the movement of the first head die 12 to abut against the first inner wall of the first through hole 321. That is, the first head die 12 moves while the second head die 11 is fixed, so as to form a single-sided positioning of the head die assembly 1, avoiding abnormal movement of the first support 22, etc., thereby improving the calibration reliability of the calibration device 3.

[0098] Optionally, the calibration device 3 further comprises a positioning member 33, and the calibration fixture 32 further has a second through hole 322, the second through hole 322 is arranged along a second direction which is perpendicular to the first direction, and the positioning member 33 is arranged in the second through hole 322.

[0099] For example, the first head die 12 is arranged to abut against the first inner wall of the first through hole 321 along the first direction, and the second head die 11 is arranged to abut against the second inner wall of the first through hole 321 along the second direction. Figure 2 and Figure 3As shown, the positioning member 33 is arranged in the second through hole 322, which is arranged along the second direction, i.e., the X direction in the figure, relative to the first through hole 321. This design forms a three-dimensional spatial positioning system. During the clamping force calibration process, when the head mold assembly 1 is placed in the first through hole 321, the positioning member 33 can constrain the head mold assembly 1 from the second direction. This multi-dimensional positioning method avoids the clamping force measurement error caused by the positional deviation of the head mold assembly 1 during the measurement process, so that the clamping force calibration can be based on the accurate position of the head mold assembly 1, thereby improving the accuracy of the measurement result.

[0100] In addition, the positioning member 33 and the second through hole 322 have good repeat positioning performance. During multiple calibration processes, the positioning member 33 can stably position the head mold assembly 1 at the same position each time the head mold assembly 1 is placed in the first through hole 321. This high repeat positioning stability makes the multiple measurement results have good consistency and comparability, and also provides a reliable basis for subsequent data analysis and calibration.

[0101] In addition, during the clamping force calibration process, the head mold assembly 1 will be subjected to the clamping force from the adjusting mechanism 2. The presence of the positioning member 33 can disperse this part of the acting force and disperse the acting force to different positions of the calibration fixture 32. This force dispersion method reduces the stress concentration of the inner wall of the first through hole 321 and the local part of the head mold assembly 1, avoids structural damage or deformation caused by excessive stress, and thus ensures the stability of the device during the calibration process.

[0102] Optionally, along the second direction, the second through hole 322 is coaxially arranged with the first through hole 321;

[0103] And / or, along the second direction, the second through hole 322 is arranged in axial symmetry with the first through hole 321;

[0104] And / or, the shape of the second through hole 322 is different from the shape of the first through hole 321.

[0105] As shown in Figure 2 and Figure 3 , along the second direction, i.e., the X direction in the figure, the second through hole 322 is coaxially arranged with the first through hole 321, so as to improve the balance and stability of the overall structure of the calibration device 3, and also facilitate the accurate opening of the second through hole 322 and the first through hole 321.

[0106] As shown in Figure 2 and Figure 3 , along the second direction, i.e., the X direction in the figure, the second through hole 322 is arranged in axial symmetry with the first through hole 321, so as to improve the balance and stability of the overall structure of the calibration device 3, and also improve the aesthetics.

[0107] The shape of the first opening 321 may include, but is not limited to, a circle, a rectangle, a racetrack shape, and an ellipse, so as to adapt to different head mold components 1. Similarly, the shape of the second opening 322 may include, but is not limited to, a circle, a rectangle, a racetrack shape, and an ellipse, so as to adapt to different positioning components 33.

[0108] The shape of the second port 322 can be the same as that of the first port 321 to facilitate the opening of the port on the calibration fixture 32; or the shape of the second port 322 can be different from that of the first port 321 to adapt to different calibration requirements.

[0109] Optionally, the calibration device 3 further includes a positioning rod 34, which is connected along a first direction to two opposing inner walls of the first port 321.

[0110] like Figure 3 As shown, the positioning rod 34 is connected to the two opposite inner walls of the first opening 321 along the first direction, that is, the Y direction in the figure. On the one hand, it can provide a clear axial positioning reference for the head mold assembly 1 placed in the first opening 321, avoid the clamping force calibration error caused by position deviation, and lay the foundation for subsequent accurate calibration of the clamping force.

[0111] On the other hand, during the clamping force calibration process, the head mold assembly 1 is subjected to clamping forces from the adjustment mechanism 2, and these forces are transmitted to the inner wall of the first port 321 through the head mold assembly 1. The design of the positioning rod 34 can disperse these forces, distributing them to different positions of the first port 321. This force dispersion method reduces local stress concentration on the inner wall of the first port 321, avoiding structural damage or deformation caused by excessive stress, thereby ensuring the stability of the calibration device during the calibration process.

[0112] Furthermore, connecting the positioning rod 34 to the two opposing inner walls of the first opening 321 is equivalent to adding a reinforcing structure within the first opening 321, which also improves the overall rigidity of the calibration device 3. When subjected to external forces, the first opening 321 may deform, affecting the positioning accuracy of the head mold assembly 1 and the calibration results of the clamping force. The positioning rod 34, through its connection to the inner walls, limits the deformation of the inner walls, allowing the first opening 321 to maintain good shape stability and providing a stable measurement environment for the calibration of the clamping force.

[0113] The present invention also provides a clamping force measuring system, including a clamping force measuring device and the above-mentioned calibration device 3, wherein the clamping force measuring device includes a head mold assembly 1 and an adjustment mechanism 2;

[0114] Head mold assembly 1 includes a first head mold 12 and a second head mold 11 arranged opposite to each other along a first direction;

[0115] The adjusting mechanism 2 comprises a base 21, a first support 22 and a second support, the first support 22 and the second support are respectively arranged on the base 21 and along a first direction, the first support 22 is matched with the first head die 12, the second support is matched with the second head die 11, and at least the first support 22 is connected with a first pressure sensor.

[0116] When the first support 22 moves to a predetermined position along the first direction, i.e. the Y direction in the figure, the first head die 12 abuts against the inner wall of the first through hole 321, so that the inner wall of the first through hole 321 can exert a certain extrusion force on the first support 22. At this time, the first pressure sensor connected to the first support 22 can measure the extrusion force, i.e. the clamping force between the first head die 12 and the inner wall of the first through hole 321, and obtain a measurement value, compare the measurement value with the known extrusion force value and process it, so as to calibrate and calibrate the first pressure sensor, which helps to ensure the reliability of the clamping force test. In addition, the calibration operation can be repeated many times, and the average value of the measurement data is taken to improve the accuracy and reliability of the calibration.

[0117] In this way, the design of the first through hole 321 of the calibration fixture 32 can provide a stable and fixed boundary condition for the calibration of the clamping force. This stable measurement environment reduces the interference of external factors such as vibration and shaking on the clamping force calibration, further improving the accuracy and repeatability of the calibration.

[0118] Among them, the head die assembly 1 can be a two-head die structure, for example Figure 4 The first head die 12 and the second head die 11 are shown as being buckled and forming a human head model profiling structure; it can also be a four-head die structure, for example Figure 2 And Figure 3 The first head die 12, the second head die 11, the front head die 13 and the upper head die 14 shown together form a human head model profiling structure, and all can realize the calibration of the corresponding pressure sensor.

[0119] Optionally, the adjusting mechanism 2 further comprises a first driving member and a first transmission member 25, the first driving member is arranged on the base 21, the driving end of the first driving member is in transmission connection with the first transmission member 25, and the first support 22 and the second support are respectively connected to the first transmission member 25;

[0120] Under the driving of the first driving member, the first transmission member 25 can drive the first support 22 and the second support to move in opposite directions along the first direction.

[0121] As Figure 4As shown, the first driving member can be a servo motor, and the first transmission member 25 can be a slide rod connected to the driving end of the servo motor. Under the driving of the servo motor, the slide rod can generate precise linear motion and drive the first support member 22 and the second support member to move to the preset positions.

[0122] Specifically, the first support member 22 and the second support member can be reversely moved in the first direction by the threaded connection of the slide rod, so that the first support member 22 and the second support member can approach or move away from each other, thereby realizing the position adjustment of the left and right head molds.

[0123] Optionally, the second support member is connected with a second pressure sensor. When the second support member and the first support member 22 are respectively moved in the first direction to the corresponding predetermined positions, the first head mold 12 and the second head mold 11 are respectively abutted against the two opposite inner walls of the first through hole 321.

[0124] Specifically, under the driving of the first driving member, the first transmission member 25 can drive the first support member 22 and the second support member to reversely move in the first direction, so that the first support member 22 and the second support member can approach or move away from each other, thereby realizing the position synchronous adjustment of the left and right head molds.

[0125] When the first support member 22 moves in the first direction to the corresponding predetermined position, the left head mold abuts against the left inner wall of the first through hole 321, so that the left inner wall of the first through hole 321 can exert a certain extrusion force on the first support member 22. At this time, the first pressure sensor connected to the first support member 22 can measure the extrusion force, i.e. the clamping force between the left head mold and the left inner wall of the first through hole 321, and obtain a measurement value. The measurement value is compared with the known extrusion force value for processing, so as to calibrate and calibrate the first pressure sensor, which helps to ensure the reliability of the clamping force test.

[0126] Meanwhile, the second support member moves to the corresponding predetermined position, and the right head mold abuts against the right inner wall of the first through hole 321, so that the right inner wall of the first through hole 321 can exert a certain extrusion force on the second support member. At this time, the second pressure sensor connected to the second support member can measure the extrusion force, i.e. the clamping force between the right head mold and the right inner wall of the first through hole 321, and obtain a measurement value. The measurement value is compared with the known extrusion force value for processing, so as to calibrate and calibrate the second pressure sensor, which helps to ensure the reliability of the clamping force test.

[0127] Optionally, the first head mold 12 is a left head mold, the second head mold 11 is a right head mold, the head mold assembly 1 further comprises a front head mold 13 and an upper head mold 14, the adjusting mechanism 2 further comprises a third support 23 and a fourth support 24, the third support 23 is matched with the front head mold 13, the fourth support 24 is matched with the upper head mold 14, and at least the third support 23 is connected with a third pressure sensor;

[0128] When the third support 23 moves to a predetermined position along the second direction, the front head mold 13 abuts against the inner wall of the first through hole 321, and the second direction is perpendicular to the first direction.

[0129] As shown in Figure 2 and Figure 3 , the left head mold, the right head mold, the front head mold 13 and the upper head mold 14 jointly form a human head model profiling structure. Among them, the left head mold and the right head mold are arranged along the first direction, that is, the left-right direction, that is, the Y direction.

[0130] As shown in Figure 4 , under the driving of the second driving member 28, the third support 23 can move along the second direction, that is, the X direction, and adjust the position of the matched front head mold 13. When the third support 23 moves to a predetermined position along the second direction, the front head mold 13 abuts against the inner wall of the first through hole 321, so that the inner wall of the first through hole 321 can exert a certain extrusion force on the third support 23. At this time, the third pressure sensor connected to the third support 23 can measure the extrusion force, that is, the clamping force between the front head mold 13 and the inner wall of the first through hole 321, and obtain a measurement value. Compare the measurement value with the known extrusion force value and process it in order to calibrate and calibrate the third pressure sensor, which helps to ensure the reliability of the clamping force test.

[0131] Optionally, the calibration device 3 further comprises a positioning member 33, the calibration clamp 32 further has a second through hole 322, the positioning member 33 is arranged in the second through hole 322, the adjusting mechanism 2 further comprises a third driving member 26 and a third transmission member 27, the driving direction of the third driving member 26 is the Z direction, the driving end of the third driving member 26 is in transmission connection with the third transmission member 27, the fourth support 24 is connected to the third transmission member 27, and the third transmission member 27 is located in the positioning member 33.

[0132] As shown in Figure 2 and Figure 3As shown, the positioning element 33 is placed within the second port 322, which is coaxially arranged with the first port 321 along the second direction. This design constructs a three-dimensional spatial positioning system. During the clamping force calibration process, when the head mold assembly 1 is placed into the first port 321, the positioning element 33 can constrain the head mold assembly 1 from the Z direction, which is perpendicular to the horizontal direction. This multi-dimensional positioning method avoids clamping force measurement errors caused by positional offset of the head mold assembly 1 during measurement, allowing the clamping force calibration to be based on the accurate position of the head mold assembly 1, thereby improving the accuracy of the measurement results.

[0133] Furthermore, the internal space of the positioning member 33 can be used to accommodate and arrange structures such as the third transmission member 27, so as to protect the relevant structures and facilitate the compact arrangement of the adjustment mechanism 2.

[0134] An opening can be made on the side of the positioning member 33 near the head mold assembly 1, through which the fourth support member 24 extends and engages with the upper head mold 14. Driven by the third drive member 26, the third transmission member 27 can drive the fourth support member 24 to move along the Z direction and adjust the position of the engaging upper head mold 14.

[0135] In one embodiment, the calibration device 3 may also include a top frame, which is located above the calibration fixture 32 and can cover the upper mold 14. When the fourth support member 24 moves to a predetermined position along the Z direction, the upper mold 14 abuts against the top frame, allowing the top frame to apply a certain compressive force to the fourth support member 24. At this time, the fourth pressure sensor connected to the fourth support member 24 can measure this compressive force, i.e., the clamping force between the upper mold 14 and the top frame, and obtain a measured value. This measured value is compared and processed with a known compressive force value to calibrate and standardize the fourth pressure sensor, which helps to ensure the reliability of the clamping force test.

[0136] Optionally, the calibration device 3 further includes a positioning rod 34, which is connected to two opposing inner walls of the first opening 321 along a first direction, and the positioning rod 34 can separate the left head mold, the right head mold and the front head mold 13.

[0137] like Figure 3 As shown, the positioning rod 34 is connected to the two opposing inner walls of the first opening 321 along the first direction, that is, the arrangement direction of the left and right head molds. This can provide a clear axial positioning reference for the head mold assembly 1 placed in the first opening 321, avoid the clamping force calibration error caused by position deviation, and lay the foundation for subsequent accurate calibration of the clamping force.

[0138] And, the left head die, the right head die and the front head die 13 can be separated by the positioning rod 34, so that the movement of the left and right head dies and the front head die 13 can be avoided from interfering with each other, thereby ensuring the independent and reliable adjustment of the positions of the left and right head dies and the front head die 13.

[0139] Optionally, the adjusting mechanism 2 further comprises a first detection member and a first driving member, the first driving member is arranged on the base 21, the driving end of the first driving member is in transmission connection with the first support member 22, and the first detection member is configured to detect the displacement value of the first support member 22 and is in communication connection with the first driving member.

[0140] Specifically, under the driving of the first driving member, the first support member 22 can move along the first direction and realize the position adjustment of the first head die 12. The communication connection between the first detection member and the first driving member also enables the adjusting mechanism 2 to realize the intelligent control in the first direction. The operator can preset the target position parameter of the first head die 12 through an external control system, and the adjusting mechanism 2 automatically adjusts the operation of the first driving member according to the displacement information fed back by the first detection member, so as to realize the automatic adjustment of the position of the first head die 12. Such an intelligent control mode greatly simplifies the operation process, reduces manual intervention, and improves the operation efficiency and accuracy.

[0141] One embodiment of the present application provides a clamping force measuring system. The clamping force measuring system comprises a clamping force measuring device and a clamping force measuring device calibration system provided by any of the above embodiments.

[0142] The clamping force measuring device comprises a head die assembly, an adjusting mechanism and at least one pressure sensor. The cooperative connection relationship among the head die assembly, the adjusting mechanism and the at least one pressure sensor can refer to the above related embodiments.

[0143] The present application can be a system, a method, and / or a computer program product. The computer program product can include a computer readable storage medium (or media) having computer readable program instructions thereon for causing a processor to carry out aspects of the present application.

[0144] A computer readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device. The computer readable storage medium can be, for example, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. A non-exhaustive list of more specific examples of the computer readable storage medium includes the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanically encoded device such as punch-cards or raised structures in a groove having instructions recorded thereon, and any suitable combination of the foregoing. A computer readable storage medium, as used herein, is not to be construed as being transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission media (e.g., light pulses passing through a fiber-optic cable), or electrical signals transmitted through a wire.

[0145] Computer readable program instructions described herein can be downloaded to respective computing / processing devices from a computer readable storage medium or to an external computer or external storage device via a network, for example, the Internet, a local area network, a wide area network and / or a wireless network. The network can comprise copper transmission cables, optical transmission fibers, wireless transmission, routers, firewalls, switches, gateway computers and / or edge servers. A network adapter card or network interface in each computing / processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium within the respective computing / processing device.

[0146] Computer readable program instructions for carrying out operations of the present application can be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider). In some embodiments, electronic circuitry including, for example, programmable logic circuitry, field-programmable gate array (FPGA), or programmable logic array (PLA) can execute the computer readable program instructions by utilizing state information of the computer readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present application.

[0147] The computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0148] These computer readable program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks. These computer readable program instructions can also be stored in a computer readable storage medium that can include random access memory (RAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or nonvolatile memory, or a suitable combination of the different types of computer readable storage media. The computer readable program instructions can also be downloaded to a computer, other programmable data processing apparatus, or other device from a computer readable storage medium or to an external computer or external storage device via a data signal that can be transmitted for example via a wired medium or a wireless medium such as the Internet or Wireless Application Protocol (WAP) signaling.

[0149] The computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus or other device to produce a computer implemented process such that the instructions which execute on the computer, other programmable data processing apparatus, or other device implement the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0150] The flow diagrams and the block diagrams in the drawings are presented to illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams and the block diagrams can represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logic functions. In some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks can sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and

[0151] Embodiments of the application have been described above, and the description is intended to be illustrative of the embodiments of the application and not exhaustive. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The scope of the application is defined by the appended claims.

Claims

1. A clamping force measuring device calibration control method characterized by, The clamping force measuring device comprises a head die assembly, an adjusting mechanism and at least one pressure sensor, the head die assembly comprises at least one head die, the pressure sensor of the clamping force measuring device is calibrated by using a calibration device, the calibration device comprises a calibration platform and a calibration clamp, the calibration clamp is arranged on the calibration platform, the calibration platform has a containing cavity, the containing cavity is configured to contain part of the adjusting mechanism, the calibration clamp has a first through opening, the first through opening is configured to contain the head die assembly, and the method comprises: When the head die assembly is contained in the first through opening of the calibration clamp, the adjusting mechanism is controlled to drive each head die to move to a corresponding predetermined position, so that each head die abuts against the inner wall of the first through opening; An actual clamping force value collected by each pressure sensor is obtained, and the actual clamping force value is generated based on the abutment of the corresponding head die against the inner wall of the first through opening; A pre-stored clamping force value is obtained, and the pre-stored clamping force value is a pressure value collected by the corresponding pressure sensor when the head die assembly is contained in the first through opening and the corresponding head die moves to the corresponding predetermined position before the clamping force measuring device is shipped; According to each actual clamping force value and the corresponding pre-stored clamping force value, a pressure compensation value of the corresponding pressure sensor is determined; According to the pressure compensation value of each pressure sensor, the pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device is adjusted.

2. The method of claim 1, wherein, According to the pressure compensation value of each pressure sensor, the pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device is adjusted. The pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device is adjusted by adding the corresponding pressure compensation value and the pressure value collected by the corresponding pressure sensor in subsequent use of the clamping force measuring device.

3. The method of claim 1, wherein, The control of the adjusting mechanism to drive each head die to move to a corresponding predetermined position comprises: Obtaining identification information of the head die assembly; According to the mapping relationship between the head die assembly and the preset size, the identification information of the head die assembly, the preset size of the head die assembly is determined; According to the preset size of the head die assembly, the adjusting mechanism is controlled to drive each head die to move to a corresponding predetermined position.

4. The method of claim 1, wherein, The clamping force measuring device comprises a first pressure sensor and a second pressure sensor, the head die assembly comprises a first head die and a second head die, wherein The control of the adjusting mechanism to drive each head die to move to a corresponding predetermined position, so that each head die abuts against the inner wall of the first through opening, and the actual clamping force value collected by each pressure sensor, and the actual clamping force value is generated based on the abutment of the corresponding head die against the inner wall of the first through opening, comprises: The adjusting mechanism is controlled to drive the first head die and the second head die to move to a corresponding predetermined position in a first direction, so that the first head die and the second head die abut against the inner wall of the first through opening; acquire a first actual clamping force value collected by the first pressure sensor and a second actual clamping force value collected by the second pressure sensor, wherein the first actual clamping force value is based on a pressure generated by the abutting of the first head die and the inner wall of the first through hole, and the second actual clamping force value is based on a pressure generated by the abutting of the second head die and the inner wall of the first through hole.

5. The method of claim 4, wherein, The clamping force measuring device further comprises a third pressure sensor, and the head die assembly further comprises a third head die. The control of the adjusting mechanism to drive each head die to move to a corresponding predetermined position to make each head die abut the inner wall of the first through hole, and the acquisition of actual clamping force values collected by each pressure sensor, wherein a corresponding actual clamping force value is based on a pressure generated by the abutting of the corresponding head die and the inner wall of the first through hole, comprises: controlling the adjusting mechanism to drive the third head die to move to a corresponding predetermined position along a second direction to make the third head die abut the inner wall of the first through hole, wherein the second direction is perpendicular to the first direction; acquiring a third actual clamping force value collected by the third pressure sensor, wherein the third actual clamping force value is based on a pressure generated by the abutting of the third head die and the inner wall of the first through hole.

6. A clamping force measurement device calibration system characterized by, The calibration device and the clamping force measuring device calibration control device, wherein The clamping force measuring device calibration control device is used to execute the method according to any one of claims 1-5.

7. The system of claim 6, wherein, The calibration device further comprises a positioning member, and the calibration fixture further has a second through hole, wherein the second through hole is arranged along a second direction with the first through hole, the second direction is perpendicular to the first direction, and the positioning member is arranged in the second through hole, and the first direction is the movement direction of the first head die and the second head die under the driving of the adjusting mechanism.

8. The system of claim 7, wherein, Along the second direction, the second through hole is coaxially arranged with the first through hole; and / or, along the second direction, the second through hole is arranged in axial symmetry with the first through hole; and / or, the shape of the second through hole is different from the shape of the first through hole.

9. A clamping force measurement system characterized by, The clamping force measuring device and the clamping force measuring device calibration system according to any one of claims 6-8, wherein The clamping force measuring device comprises a head die assembly, an adjusting mechanism, and at least one pressure sensor.

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