A watch travel time precision adjustment method and control device

Abstract

The present invention provides a watch travel time precision adjustment method and control device, belonging to the technical field of watches. The watch travel time precision adjustment method comprises the steps of: obtaining movement parameters, the initial period T of the watch balance spring, n , theoretical cycle T0 and target cycle T n+1 ; Determine the initial instantaneous daily difference M n Is it within the preset tolerance range? If not, then according to the initial instantaneous daily difference M n Determine the tool adjustment position; according to the initial cycle T n and target period T n+1 Calculate the adjustment angle δ (n+1) and adjust the direction; insert the tool into the adjustment position, and control the actuator to move the speed needle cantilever and instantly rotate the angle δ around the center of rotation of the balance wheel (n+1) ; Determine the actual instantaneous daily difference M n+2 Whether it is within the preset tolerance range. The watch travel time accuracy adjustment method provided by the present invention can accurately and quickly adjust the travel time accuracy of a mechanical watch.

Description

Technical Field

[0001] The invention relates to the technical field of watch travel time control, and in particular to a watch travel time accuracy adjustment method and a control device. Background Art

[0002] At present, the instantaneous daily difference adjustment of mechanical watches is done manually, and it takes many attempts to adjust the polarization to within the tolerance range. The operation efficiency is low, the movement is relatively small, and the operator is required to operate very carefully, which consumes mental energy. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and provide a method and a control device for adjusting the timing accuracy of a watch.

[0004] The present invention provides the following technical solution: a method for adjusting the timekeeping accuracy of a watch, comprising:

[0005] Get the movement parameters and the initial period T of the watch balance spring n , theoretical cycle T0 and target cycle T n+1 ;

[0006] According to the initial period T n The initial instantaneous daily difference M is calculated from the theoretical period T0 n , according to the initial period T n and target period T n+1 Calculate the target instantaneous daily difference M n+1 ;

[0007] Determine the initial instantaneous daily difference M n Whether it is within the preset tolerance range;

[0008] If not, then according to the initial instantaneous daily difference M n Determine tool adjustment position;

[0009] According to the initial period T n and target period T n+1 Calculate the adjustment angle δ (n+1) and adjust direction;

[0010] Insert the tool into the adjustment position, and control the actuator to move the speed needle cantilever and instantly rotate the angle δ around the center of rotation of the balance wheel (n+1) ;

[0011] Get the actual period T of the watch balance spring n+2 , according to the theoretical period T0 and the actual period T n+2 Calculate the actual instantaneous daily difference M n+2 ;

[0012] Determine the actual instantaneous daily difference M n+2Whether it is within the preset tolerance range;

[0013] If not, adjust the rotation direction of the speed needle cantilever and repeat the steps after inserting the tool to the adjustment position.

[0014] In some embodiments of the present invention, the method further comprises:

[0015] Determine the initial period T n Whether it is within the first preset period range;

[0016] If so, no adjustment is required.

[0017] Furthermore, the control execution device moves the speed needle cantilever and instantly rotates the angle δ around the rotation center of the balance wheel. (n+1) The previous steps include:

[0018] The control execution device moves the speed needle cantilever to instantly rotate the preset angle δ around the rotation center of the balance wheel;

[0019] The control system controls the sound sensor to identify the acoustic signal and obtains the period T n+3 ;

[0020] According to the period T n+3 , initial period T n The constant C is calculated using the outer radius R of the hairspring in the movement parameters.

[0021] Further, the period T is determined n+3 Whether it is within the first preset period range;

[0022] If so, no adjustment is required.

[0023] Furthermore, the movement parameters include the position of the speed indicator cantilever, the balance wheel rotation center, the adjustment position and the outer end radius R of the hairspring.

[0024] Further, it is determined whether the tool is moved away from the speed needle cantilever;

[0025] If yes, the control system controls the image recognition module to re-recognize the movement parameters;

[0026] Insert the tool into the identified adjustment position, and control the actuator to move the speed needle cantilever and rotate it instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) ;

[0027] If not, determine the adjustment direction.

[0028] Further, the determining the adjustment direction includes:

[0029] Determine whether the speed needle cantilever rotates in the current rotation direction;

[0030] If so, the control execution device moves the speed needle cantilever and rotates the angle δ around the center of rotation of the balance wheel instantaneously (n+1) ;

[0031] If not, the control system controls the execution structure to move the tool away from the speed needle cantilever, insert the tool into the adjustment position, and control the execution device to move the speed needle cantilever and rotate it around the center of rotation of the balance wheel in the opposite direction of the current rotation direction by an instantaneous angle δ (n+1) .

[0032] Furthermore, the adjustment position includes a fast adjustment position and a slow adjustment position.

[0033] Further, according to the initial instantaneous daily difference M n The relationship between the watch and the preset tolerance range determines the speed of the watch.

[0034] If M n If it is less than the preset tolerance range, the watch will run slowly, and the adjustment position where the tool is inserted is the fast adjustment position;

[0035] If M n If it is greater than the preset tolerance range, the watch will run slowly and the adjustment position where the tool is inserted will be the slow adjustment position.

[0036] Further, determine the initial instantaneous daily difference M n The instantaneous daily difference with the target M n+1 relationship;

[0037] If M n Less than M n+1 , then the adjustment direction is the direction of reducing the length of the hairspring;

[0038] If M n Greater than M n+1 , the adjustment direction is to increase the length of the hairspring.

[0039] Some embodiments of the present invention provide a device for controlling the timekeeping accuracy of a watch, comprising:

[0040] The acquisition module is used to obtain the current period of the watch balance spring;

[0041] A first calculation module, used for calculating the current instantaneous daily difference of the watch;

[0042] A second calculation module is used to calculate the rotation angle of the fast and slow needle cantilever;

[0043] The control module is used to control the speed needle cantilever to rotate around the balance wheel rotation center by an angle δ if the current instantaneous daily difference is not within the preset tolerance range. (n+1) .

[0044] The embodiments of the present invention have the following advantages: the watch travel accuracy adjustment method provided by the present invention compares the instantaneous daily error of the watch with the target instantaneous daily error, judges whether the current instantaneous daily error of the watch is within the tolerance range, and calculates the angle and direction of rotation of the fast and slow hand cantilever according to the judgment result. By accurately calculating the rotation angle of the fast and slow hand cantilever and adjusting the rotation of the fast and slow hand cantilever by the equipment, not only the accuracy of the travel accuracy adjustment can be improved, but also the adjustment efficiency of the travel accuracy can be improved, thereby avoiding deviations in the manual adjustment process.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A flow chart showing a method for adjusting the timekeeping accuracy of a watch provided by some embodiments of the present invention is shown;

[0048] Figure 2 A flowchart showing the determination of an initial period and a target period in a method for adjusting the timekeeping accuracy of a watch provided by some embodiments of the present invention is shown;

[0049] Figure 3 A flow chart showing a method for calculating a constant C in a method for adjusting the travel time accuracy of a watch provided by some embodiments of the present invention;

[0050] Figure 4 A flow chart showing whether a tool moves away the speed hand cantilever in a method for adjusting the travel accuracy of a watch provided by some embodiments of the present invention. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0056] like Figure 1 As shown, some embodiments of the present invention provide a method for adjusting the time accuracy of a watch, which is mainly used for adjusting the time accuracy of a mechanical watch to improve the accuracy and adjustment efficiency of the time accuracy adjustment of the mechanical watch.

[0057] The method for adjusting the watch's travel time accuracy includes the following steps:

[0058] Step S100, obtaining movement parameters and the initial period T of the watch balance spring n , theoretical cycle T0 and target cycle T n+1 .

[0059] Wherein, obtaining the movement parameters includes obtaining the position of the speed needle cantilever, the balance wheel rotation center, the adjustment position and the outer end radius R of the hairspring.

[0060] The adjustment position mentioned here includes a fast adjustment position and a slow adjustment position, wherein the fast adjustment position and the slow adjustment position are respectively located at two opposite sides of the speed needle cantilever.

[0061] Among them, in order to adjust the speed in different watches, the direction of adjustment of the speed needle is different, but the same thing is that the adjustment direction or area that makes the effective working length of the hairspring longer is the slowing direction or area.

[0062] It can be understood that, in this embodiment, the fast-adjusting position refers to a direction or position that shortens the effective working length of the hairspring, and the slow-adjusting position refers to a direction or position that lengthens the effective working length of the hairspring.

[0063] It should be noted that the initial period of the watch balance spring is T n The sound sensor of the mechanical watch calibrator recognizes the sound signal of the mechanical watch and distinguishes the initial period T of the balance spring of the watch through the sound signal. n .

[0064] Specifically, the control system controls the sound sensor to contact the watch and recognize the watch sound signal to obtain the initial period T n The sound sensor can effectively contact any identifiable position of the watch, such as the watch case, watch glass, crown, etc. The watch sound signal can be a signal of different directions according to the pre-setting.

[0065] Optionally, in order to achieve detection in different orientations, the watch can be placed in a calibrator or in other mechanisms or systems that achieve different orientations.

[0066] In addition, the theoretical cycle T0 refers to the vibration cycle set for the balance spring system of a mechanical watch when the movement is designed. The target cycle refers to the cycle that a mechanical watch needs to be adjusted. The target cycle should be a value within the tolerance range. The purpose of the target cycle is: after determining whether the watch is running fast or slow, a specific value within the tolerance range (i.e., the target cycle) is used as the actual adjustment target value, and the watch is adjusted to the specific value.

[0067] It should be noted that the oscillation of the balance spring of a mechanical watch belongs to simple harmonic motion, and its period is:

[0068]

[0069] Where T is the period; ω is the circular frequency; I is the moment of inertia of the disk; k θ is the hairspring stiffness; m is the mass of the balance wheel; r is the equivalent radius; E is the elastic modulus of the material; h is the hairspring cross-sectional height; e is the hairspring thickness; L is the hairspring (working) length; C is a constant.

[0070] Step S200, according to the initial period T n The initial instantaneous daily difference M is calculated from the theoretical period T0 n , according to the initial period T n and target period T n+1 Calculate the target instantaneous daily difference M n+1 .

[0071] Identify a short period of time T through the calibration instrument i , which represents the periodic changes of one day (24 hours) and is used to calculate the speed of the entire day, is called the instantaneous daily difference.

[0072] The calculation formula of instantaneous daily difference is:

[0073]

[0074] As the period T increases, the number of vibrations per day decreases, and the pointer moves slower. Conversely, it moves faster. If M is positive, it moves slower, and if it is negative, it moves faster.

[0075] In the actual production, use, and testing of watches, faster movement is positive and slower movement is negative, so in order to maintain consistency, the instantaneous daily difference is calculated according to the following formula. This is just a difference in usage habits, and the two formulas should not be considered to be significantly different. This application document is calculated using the following formula:

[0076]

[0077] It can be understood that the initial instantaneous daily difference M can be calculated by the above formula: n and the target instantaneous daily difference M n+1 It should be noted that the instantaneous daily difference and the period are different forms of indicating the speed of a watch. The two can be directly converted and can both indicate the speed of a watch.

[0078] Step S300, determine the initial instantaneous daily difference M n Whether it is within the preset tolerance range.

[0079] Specifically, in this step, the initial instantaneous daily difference M is determined n Is it within the preset tolerance range?

[0080] Among them, the preset tolerance range can be specifically set according to actual conditions.

[0081] It is understandable that it can also be compared with the target instantaneous daily difference M n+1 The target instantaneous daily difference M n+1It is a specific value within the tolerance range. It is preferred to adjust the watch's travel time accuracy to this value. After adjustment, the watch's accuracy is close to this value. At this time, there are two logics to determine the effect of the adjustment: first, whether the adjusted instantaneous daily difference is within the tolerance range; second, whether the adjusted instantaneous daily difference is different from the target instantaneous daily difference M n+1 For comparison, the target instantaneous daily difference M n+1 Based on the target instantaneous daily difference M, a second tolerance may be provided. The second tolerance should be within the tolerance range of the watch (including the boundary), that is, it may be smaller than the tolerance range of the watch, so as to improve the accuracy after adjustment. n+1 Make adjustments, judging by the watch's tolerance.

[0082] It can be understood that if the initial instantaneous daily difference M n When it is within the tolerance range, the mechanical watch is considered to be running accurately, i.e. no adjustment is required.

[0083] For example, if the allowable range of the instantaneous daily difference is -5s / d to +20s / d, and Tn is 30s / d, the instantaneous daily difference should be adjusted to within the allowable range.

[0084] Step S400: if not, then according to the initial instantaneous daily difference M n Determine the tool adjustment position.

[0085] It should be noted that the initial instantaneous daily difference M n If it is not within the preset tolerance range, the cycle of the mechanical watch needs to be adjusted.

[0086] Specifically, according to the initial instantaneous daily difference M n The instantaneous daily difference with the target M n+1 The size of the difference between the two determines the speed of the watch, thereby determining the adjustment position where the tool should be inserted.

[0087] Preferably, the adjustment position where the tool is inserted is a direction or region capable of adjusting the initial instantaneous daily difference or the initial period of the watch balance spring to within the tolerance range.

[0088] In this embodiment, in actual operation, the adjustment position of the tool is centered on the balance wheel rotation center and a point A in the adjustment area is a position of a determined radius of radius r. Point A is a point determined after considering whether the adjustment tool can be accommodated, and the radius of point A can be pre-set.

[0089] Step S500, according to the initial period T n and target period T n+1 Calculate the adjustment angle δ (n+1) and adjust direction.

[0090] It should be noted that the adjustment angle δ is determined by the control system (n+1)The calculation formula is:

[0091]

[0092] Note: The angle δ that makes the hairspring longer is the positive direction.

[0093] In addition, in some other embodiments of this embodiment, it is also possible to (n+1) Calculate the displacement L of the fast and slow needle cantilever. The calculation formula of the displacement is:

[0094]

[0095] In this embodiment, if the calculated angle δ (n+1) If the value is positive, that is, the period increases, the tool is inserted into the slow-down area to increase the length of the hairspring, thereby slowing down the watch.

[0096] In addition, if the calculated angle δ (n+1) If the value is negative, that is, the period decreases, the tool is inserted into the speed-up area to reduce the length of the hairspring and thus speed up the watch.

[0097] Step S600: insert the tool into the adjustment position, and control the execution device to move the speed needle cantilever and rotate it instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) .

[0098] According to the adjustment position of the tool insertion determined in step S500, and according to the calculated initial instantaneous daily difference M n To determine the rotation direction of the speed needle cantilever, the speed needle cantilever is moved by controlling the actuator to rotate the speed needle cantilever around the center of rotation of the balance wheel by an instantaneous angle δ (n+1) , in order to complete the adjustment of the mechanical watch cycle and instantaneous daily difference.

[0099] Step S700, obtaining the actual period T of the balance spring of the watch n+2 , according to the theoretical period T0 and the actual period T n+2 Calculate the actual instantaneous daily difference M n+2 .

[0100] The control system controls the sound sensor to identify the speed needle cantilever and instantly rotate the angle δ around the center of rotation of the balance wheel. (n+1) The sound signal after that, and get the actual period T n+2 , calculate the actual instantaneous daily difference M according to the instantaneous daily difference formula n+2 .

[0101] Here we calculate the actual instantaneous daily difference M n+2 The purpose is to compare with the target instantaneous daily difference M n+1 Make a comparative judgment to determine whether the adjustment is accurate.

[0102] Step S800, determine the actual instantaneous daily difference M n+2 Whether it is within the preset tolerance range.

[0103] Specifically, determine the actual instantaneous daily difference M n+2 Whether it is within the preset tolerance range.

[0104] If yes, the adjustment is considered completed, that is, the adjustment of the mechanical watch's travel accuracy is completed.

[0105] Step S900: if not, adjust the rotation direction of the speed needle cantilever, and repeat the calculation to adjust the angle δ (n+1) The steps after that.

[0106] Among them, if the actual instantaneous daily difference M n+2 If it is not within the preset tolerance range, the rotation direction of the speed needle cantilever is incorrect.

[0107] At this time, the control system controls the image to re-calibrate the machine parameters and redetermine the adjustment position of the tool insertion.

[0108] Insert the tool into the identified adjustment position and rotate it in the opposite direction of the speed needle cantilever by an angle δ (n+1) After that, the current actual cycle is obtained, and the current actual instantaneous daily difference is calculated, and the current actual instantaneous daily difference is judged. If the current actual instantaneous daily difference is within the preset tolerance range, the adjustment is completed.

[0109] like Figure 2 As shown, in some embodiments of the present invention, the method further comprises the steps of:

[0110] Step S110, determine the initial period T n Whether it is within the first preset cycle range.

[0111] It can be understood that if the initial period T n If the time is greater than the first preset period range, the timekeeping of the mechanical watch is considered inaccurate and its timekeeping accuracy needs to be adjusted.

[0112] If not, the timekeeping accuracy of the mechanical watch is adjusted according to steps S200 to S900 described in the above embodiment.

[0113] If so, no adjustment is required.

[0114] It can be understood that when the initial period T n Within the first preset period range, the mechanical watch is considered to be accurate and does not need to be adjusted.

[0115] like Figure 3As shown, in some embodiments of the present invention, the control execution device moves the speed needle cantilever and instantly rotates the angle δ around the center of rotation of the balance wheel (n+1) The previous steps include:

[0116] Step S101, controlling the execution device to move the speed needle cantilever to instantly rotate a preset angle δ around the rotation center of the balance wheel.

[0117] It should be noted that the angle δ here can be determined in advance, and is initially determined by comprehensively considering the actual conditions of the adjustment equipment and the movement. After adjusting the angle, the instantaneous daily difference changes and is recognized as a significant change. The change in the length of the hairspring after the rotation angle δ can be calculated based on the arc length formula, using the rotation angle δ and the outer end radius R of the hairspring.

[0118] In this embodiment, if the adjustment tool is inserted into the right side of the speed needle cantilever, the speed needle cantilever is turned counterclockwise to rotate around the center of rotation of the balance wheel by an angle δ. Optionally, a recognition function of the tool touching the cantilever should be provided, which can be based on an electrical recognition function (for example, the adjustment tool contacts the cantilever to create a path), a pressure recognition function (a pressure sensor is provided on the adjustment tool or its connection structure) or a magnetic recognition function.

[0119] At this time, an actual starting angle of rotation is obtained based on the line connecting the balance wheel rotation center and the touch recognition point, and the rotation angle δ is obtained based on this.

[0120] Step S102: The control system controls the sound sensor to recognize the acoustic signal and obtains the period T n+3 .

[0121] Specifically, the control system controls the sound sensor to identify the sound signal after the speed needle cantilever rotates instantaneously around the rotation center of the balance wheel by a preset angle δ, and obtains the period T n+3 .

[0122] It should be noted that the purpose of instantaneously rotating the fast and slow hand cantilever around the rotation center of the balance wheel by a preset angle δ is to calculate the actual instantaneous daily error of the mechanical watch.

[0123] Step S103, according to the period T n+3 , initial period T n The constant C is calculated using the outer radius R of the hairspring in the movement parameters.

[0124] The calculation formula of constant C is:

[0125]

[0126] It should be noted that the purpose of controlling the speed needle cantilever to rotate instantaneously around the center of rotation of the balance wheel by a preset angle δ is to obtain a constant C, which is used for the subsequent calculation of the rotation angle of the speed needle cantilever, that is, to calculate the angle δ adjusted by the speed needle cantilever. (n+1) .

[0127] Step S104, determine the period T n+3 Whether it is within the first preset cycle range.

[0128] It is understandable that although the control execution device is used to turn the speed needle cantilever around the balance wheel rotation center to instantaneously rotate the preset angle δ, the angle δ is a preset angle. However, after the speed needle cantilever rotates the angle δ, it is possible to accurately adjust the travel accuracy of the mechanical watch.

[0129] Therefore, when the speed needle cantilever rotates by an angle δ, it is necessary to compare and judge the period of the hairspring in the current mechanical watch with the target period.

[0130] It can be understood that if the period T n+3 If the angle is greater than the first preset period range, the timekeeping of the mechanical watch is considered inaccurate and needs to be adjusted. In other words, the rotation angle δ of the fast and slow hand cantilever does not achieve the adjustment of the timekeeping accuracy.

[0131] If the period T n+3 Within the first preset period range, the mechanical watch is considered to be accurate and does not need to be adjusted.

[0132] At this time, the timekeeping accuracy of the mechanical watch is adjusted according to steps S200 to S900 described in the above embodiment.

[0133] In some embodiments of the present invention, the movement parameters include the position of the speed indicator cantilever, the balance wheel rotation center, the adjustment position and the outer end radius R of the hairspring.

[0134] like Figure 4 As shown, in some embodiments of the present invention, the method comprises the steps of:

[0135] Step S910, determining whether the tool is removed from the speed needle cantilever.

[0136] It should be noted that the tool described here refers to an adjustment tool for adjusting the speed needle cantilever.

[0137] Step S911: If yes, the control system controls the image recognition module to re-recognize the movement parameters.

[0138] It should be noted that re-identifying the movement parameters means that the re-identification control system controls the image recognition module to re-identify the position of the speed needle cantilever, the balance wheel rotation center, the adjustment position and the tool adjustment position. By identifying the speed needle cantilever, the balance wheel rotation center, the adjustment position and the tool adjustment position, the insertion position of the tool for re-adjusting the speed needle cantilever is determined.

[0139] Step S912: insert the tool into the identified adjustment position, and control the execution device to move the speed needle cantilever and rotate it instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) .

[0140] In this embodiment, preferably, the speed needle is cantilevered and rotates instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) After that, move the tool away. After the adjustment tool is moved away, the data obtained by the sound sensor is not affected by the touch of the adjustment tool, and the instantaneous daily difference can be quickly adjusted faster or slower.

[0141] If not, determine the adjustment direction.

[0142] Specifically, the determination of the adjustment direction mentioned here refers to determining the rotation direction of the speed needle cantilever.

[0143] Step S920, determining whether the speed needle cantilever rotates in the current rotation direction.

[0144] Specifically, in this embodiment, the speed needle cantilever is obtained and the instantaneous rotation angle δ around the center of rotation of the balance wheel is obtained. (n+1) The instantaneous daily difference of the mechanical watch is then determined. If the instantaneous daily difference is greater than the first preset tolerance range, the rotation direction of the fast and slow hand cantilever is determined according to the value of the current instantaneous daily difference.

[0145] Step S921: If yes, then control the execution device to move the speed needle cantilever and rotate it instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) .

[0146] It can be understood that at this time, there is no need to remove the tool from the speed needle cantilever, and the speed needle cantilever is oscillated in the current direction and rotated instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) , in order to improve the efficiency of regulating the time accuracy of mechanical watches.

[0147] Step S930, if not, the control system controls the execution structure to move the tool away from the speed needle cantilever, insert the tool into the adjustment position, and control the execution device to move the speed needle cantilever and rotate it around the center of rotation of the balance wheel in the opposite direction of the current rotation direction by an instantaneous angle δ (n+1) .

[0148] Specifically, the control system controls the execution structure to move the tool away from the speed needle cantilever and reacquire the adjustment position through the image recognition module. Then, the tool is inserted into the recognized adjustment position, and the execution device is controlled to move the speed needle cantilever and rotate it around the center of rotation of the balance wheel in the opposite direction of the current rotation direction by an instantaneous angle δ (n+1) , in order to adjust the travel accuracy of mechanical watches.

[0149] It should be noted that each time the fast and slow hand cantilever rotates a preset angle, it is necessary to obtain the current period of the balance spring of the mechanical watch, calculate the current instantaneous daily difference based on the current period, and compare and judge the current instantaneous daily difference with the preset tolerance range (that is, perform steps S700, S800 and S900 in the above embodiment in sequence). If the current instantaneous daily difference is within the preset tolerance range, the travel accuracy of the mechanical watch is considered to be adjusted.

[0150] like Figure 2 As shown, in some embodiments of the present invention, according to the initial instantaneous daily difference M n and the preset tolerance range (including the target instantaneous daily difference M n+1 ) to judge the speed of the watch.

[0151] Specifically, according to the initial instantaneous daily difference M n The absolute value of the preset tolerance range (target instantaneous daily difference M n+1 ) to judge the speed of the watch.

[0152] If M n If the error is less than the preset tolerance range, the watch will run slowly. The adjustment position where the tool is inserted is the fast adjustment position. The speed needle cantilever is moved by the actuator and rotated around the center of rotation of the balance wheel in the direction of decreasing the hairspring length by an angle δ (n+1) .

[0153] If M n If the error is greater than the preset tolerance range, the watch will run fast, and the adjustment position where the tool is inserted is the slow adjustment position. The speed needle cantilever is moved by the actuator and rotated around the center of rotation of the balance wheel in the direction of increasing the hairspring length by an angle δ (n+1) .

[0154] It should be noted that when the speed needle cantilever instantaneously rotates by an angle δ (n+1) Afterwards, the travel accuracy of the mechanical watch is adjusted and judged according to step S700, step S800 and step S900 described in the above embodiment. When the actual instantaneous daily difference is within the tolerance range, the travel accuracy of the mechanical watch is adjusted.

[0155] like Figure 2 As shown, in some embodiments of the present invention, the initial instantaneous daily difference M is determined nThe instantaneous daily difference with the target M n+1 relationship.

[0156] If M n Less than M n+1 , the adjustment direction is to reduce the length of the hairspring.

[0157] It should be noted that when M n Less than M n+1 , the watch will run slower. By reducing the length of the hairspring to increase the instantaneous daily error of the watch, the instantaneous daily error of the watch will be close to the target instantaneous daily error.

[0158] If M n Greater than M n+1 , the adjustment direction is to increase the length of the hairspring.

[0159] It should be noted that when M n Greater than M n+1 , then the watch will run slower, and the instantaneous daily error of the watch can be reduced by increasing the length of the hairspring.

[0160] It can be understood that by judging the initial instantaneous daily difference M n The instantaneous daily difference with the target M n+1 The size of the hairspring is used to determine the adjustment direction and thus adjust the length of the hairspring.

[0161] In addition, it should be noted that when the initial instantaneous daily difference M n Equal to the target instantaneous daily difference M n+1 No adjustment is required.

[0162] Some embodiments of the present invention provide a device for controlling the timekeeping accuracy of a watch, the device comprising an acquisition module, a first calculation module, a second calculation module and a control module.

[0163] The acquisition module is used to obtain the current period of the watch balance spring.

[0164] The first calculation module is used to calculate the current instantaneous daily difference of the watch.

[0165] The second calculation module is used to calculate the rotation angle of the fast and slow needle cantilever.

[0166] The control module is used to control the speed needle cantilever to instantly rotate an angle δ around the center of rotation of the balance wheel if the current instantaneous daily difference is not within the preset tolerance range. (n+1) .

[0167] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0168] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0169] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for adjusting the timekeeping accuracy of a watch, characterized in that: include: Get the movement parameters and the initial period T of the watch balance spring n , theoretical cycle T0 and target cycle T n+1 ; According to the initial period T n The initial instantaneous daily difference M is calculated from the theoretical period T0 n , according to the initial period T n and target period T n+1 Calculate the target instantaneous daily difference M n+1 ; Determine the initial instantaneous daily difference M n Whether it is within the preset tolerance range; If not, then according to the initial instantaneous daily difference M n Determine tool adjustment position; According to the initial period T n and target period T n+1 Calculate the adjustment angle δ (n+1) and adjust direction; The adjustment angle δ (n+1) The calculation formula is: ； The control execution device moves the speed needle cantilever to instantly rotate the preset angle δ around the rotation center of the balance wheel; The control system controls the sound sensor to identify the acoustic signal and obtains the period T n+3 ; According to the period T n+3 , initial period T n The constant C is calculated from the outer radius R of the hairspring in the movement parameters; Insert the tool into the adjustment position, and control the actuator to move the speed needle cantilever and instantly rotate the angle δ around the center of rotation of the balance wheel (n+1) ; Get the actual period T of the watch balance spring n+2 , according to the theoretical period T0 and the actual period T n+2 Calculate the actual instantaneous daily difference M n+2 ; Determine the actual instantaneous daily difference M n+2 Whether it is within the preset tolerance range; If not, adjust the rotation direction of the speed needle cantilever and repeat the steps after inserting the tool to the adjustment position.

2. The method for adjusting the timekeeping accuracy of a watch according to claim 1, characterized in that: The method further comprises: Determine the initial period T n Whether it is within the first preset period range; If so, no adjustment is required.

3. The method for adjusting the timekeeping accuracy of a watch according to claim 1, characterized in that: Judgment period T n+3 Whether it is within the first preset period range; If so, no adjustment is required.

4. The method for adjusting the timekeeping accuracy of a watch according to claim 1, characterized in that: The movement parameters include the position of the speed indicator cantilever, the balance wheel rotation center, the adjustment position and the outer end radius R of the hairspring.

5. The method for adjusting the timekeeping accuracy of a watch according to claim 1, characterized in that: Determine whether the tool is removed from the speed needle cantilever; If yes, the control system controls the image recognition module to re-recognize the movement parameters; Insert the tool into the identified adjustment position, and control the actuator to move the speed needle cantilever and rotate it instantaneously around the center of rotation of the balance wheel by an angle δ (n+1) ; If not, determine the adjustment direction.

6. The method for adjusting the timekeeping accuracy of a watch according to claim 5, characterized in that: The determination of the adjustment direction includes: Determine whether the speed needle cantilever rotates in the current rotation direction; If so, the control execution device moves the speed needle cantilever and instantly rotates the angle δ around the center of rotation of the balance wheel (n+1) ; If not, the control system controls the execution structure to move the tool away from the speed needle cantilever, insert the tool into the adjustment position, and control the execution device to move the speed needle cantilever and rotate it around the center of rotation of the balance wheel in the opposite direction of the current rotation direction by an instantaneous angle δ (n+1) .

7. The method for adjusting the timekeeping accuracy of a watch according to any one of claims 1 to 6, characterized in that: The adjustment position includes a fast adjustment position and a slow adjustment position.

8. The method for adjusting the timekeeping accuracy of a watch according to claim 7, characterized in that: According to the initial instantaneous daily difference M n The relationship between the watch and the preset tolerance range determines the speed of the watch. If M n If it is less than the preset tolerance range, the watch will run slowly, and the adjustment position where the tool is inserted is the fast adjustment position; If M n If it is greater than the preset tolerance range, the watch will run slowly and the adjustment position where the tool is inserted will be the slow adjustment position.

9. The method for adjusting the timekeeping accuracy of a watch according to claim 1, characterized in that: Determine the initial instantaneous daily difference M n The instantaneous daily difference with the target M n+1 relationship; If M n Less than M n+1 , then the adjustment direction is the direction of reducing the length of the hairspring; If M n Greater than M n+1 , the adjustment direction is to increase the length of the hairspring.

10. A device for controlling the timekeeping accuracy of a watch, applied to the method for adjusting the timekeeping accuracy of a watch according to any one of claims 1 to 9, characterized in that: include: The acquisition module is used to obtain the current period of the watch balance spring; A first calculation module, used for calculating the current instantaneous daily difference of the watch; A second calculation module is used to calculate the rotation angle of the fast and slow needle cantilever; The control module is used to control the speed needle cantilever to rotate around the balance wheel rotation center by an angle δ if the current instantaneous daily difference is not within the preset tolerance range. (n+1) .

Images