Device and method for detecting dynamic stability of high-speed blanking working condition of stamping equipment and die

Abstract

The invention relates to the technical field of stamping equipment detection, and particularly discloses a stamping equipment and die high-speed blanking working condition dynamic stability detection device and method, and the device comprises a displacement recording device and a measurement assembly which is used in cooperation with the displacement recording device. The displacement recording device comprises an assembly installed on the lower die and a positioning column which is installed on the side, close to the lower die, of the upper die and is in sliding fit with the assembly in the vertical direction. The assembly comprises a positioning seat provided with a positioning hole, and at least four groups of sliding blocks which are mounted on the positioning seat and are in sliding fit with the positioning seat; a sliding groove communicated with the positioning hole is formed in the positioning seat; the axis of the sliding groove is perpendicular to the axis of the positioning hole. The sliding grooves and the sliding blocks are arranged in a one-to-one correspondence mode. According to the invention, the displacement operation precision of the stamping equipment and the die can be effectively detected under the working condition of high-speed blanking load when the stamping equipment uses the die to stamp and produce a stator punching sheet.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment detection, and more specifically, to a dynamic stability detection device and method for high-speed blanking working conditions of stamping equipment and dies. Background Art

[0002] The operating accuracy of stamping equipment and dies under production working conditions determines the output efficiency and the quality of punched sheets. At present, the operating accuracy of stamping equipment and dies is usually the accuracy measured in a no-load "static" environment. Its static accuracy cannot accurately reflect the dynamic operating accuracy under load conditions. Specifically, the dynamic operating accuracy under load conditions refers to:

[0003] 1. The accuracy of stamping equipment in cases such as structural displacement caused by clearance offset and elastic deformation of the mechanism, and elastic tremors generated by the recovery of elastic deformation when the load disappears.

[0004] 2. The load displacement of the upper and lower dies of the die due to manufacturing accuracy and structural strength.

[0005] Since there is currently no detection device that can detect the dynamic operating accuracy in a blanking working condition environment, there are:

[0006] 1. In the production of large stator punched sheets, 25% of the stamping equipment and dies, although the "static" operating accuracy is qualified, the dynamic operating accuracy is unqualified.

[0007] 2. Under working conditions, the operating accuracy of stamping equipment and the phenomenon of forced displacement of the die will both cause die failures, resulting in the shutdown of the automated production line for maintenance and a decrease in production efficiency. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a dynamic stability detection device and method for high-speed blanking working conditions of stamping equipment and dies. The present invention can effectively detect the displacement operating accuracy of stamping equipment and dies under high-speed blanking load conditions when the stamping equipment uses the die to stamp and produce stator punched sheets.

[0009] The solution adopted by the present invention to solve the technical problem is:

[0010] A dynamic stability detection device for high-speed blanking working conditions of stamping equipment and dies includes a displacement recording device and a measurement component used in cooperation with the displacement recording device;

[0011] The displacement recording device includes an assembly installed on the lower die and a positioning column installed on one side of the upper die close to the lower die and slidably matched with the assembly in the vertical direction;

[0012] The assembly includes a positioning seat provided with positioning holes, and at least four groups of sliders mounted on the positioning seat and slidably engaged with the positioning seat; a chute communicating with the positioning holes is arranged in the positioning seat; the axis of the chute is perpendicular to the axis of the positioning holes; the chutes and the sliders are arranged in one-to-one correspondence.

[0013] In some possible embodiments, the positioning seat includes a top seat, a guide plate, and a bottom seat coaxially arranged from top to bottom in sequence;

[0014] The chute is arranged on one side of the guide plate close to the top seat and on one side close to the bottom seat; an abutting plane in contact with the positioning column is arranged at one end of the slider close to the positioning hole.

[0015] In some possible embodiments, a pressing member is arranged on each group of sliders; the pressing member includes a pressing block mounted above the slider and in abutting cooperation with the slider, and a pressure pre-tightening bolt passing through the top seat and providing a pre-tightening pressure to the pressing block;

[0016] In some possible embodiments, there are four groups of the sliders and the chutes, and the four groups of sliders form a cross structure, and the center of the cross structure is on the axis of the positioning column.

[0017] In some possible embodiments, the positioning holes include a conical hole arranged on one side of the top seat close to the upper die, and a cylindrical hole connected to the small end of the conical hole and coaxial therewith; the displacement recording device further includes a guiding sleeve for coaxial positioning of the positioning column and the assembly and used in cooperation with the conical hole.

[0018] In some possible embodiments, the measuring assembly includes a measuring frame in an L-shaped structure, a distance measuring assembly mounted on the measuring frame and used in cooperation with the slider, a positioning member mounted on the measuring frame and sleeved in the positioning hole, and a locking member for locking the measuring frame and the distance measuring assembly.

[0019] In some possible embodiments, the measuring frame includes a cross bar located above the top seat and used for mounting the positioning member, and a vertical bar connected to one end of the cross bar; mounting holes are arranged on the vertical bar along the length direction of the vertical bar; the measuring end of the distance measuring assembly is mounted in the mounting holes.

[0020] In some possible embodiments, the positioning member includes a positioning shaft connected to the measuring frame by bolts, a plurality of groups of single-row ball retainers sleeved outside the positioning shaft and arranged in sequence along the axial direction of the positioning shaft, a bushing arranged between adjacent two groups of single-row ball retainers and sleeved outside the positioning shaft, and a cover plate arranged at the bottom of the positioning shaft and connected to the positioning shaft.

[0021] In some possible embodiments, the measuring assembly is a micrometer.

[0022] A detection method for a stamping equipment and a dynamic stability detection device for a high-speed punching condition of a die according to the above-mentioned method specifically comprises the following steps:

[0023] Step S1: insert the positioning column into the positioning hole of the assembly through the guide sleeve, install the assembly on the lower mold, and connect the positioning column to the upper mold;

[0024] Step S2: adjusting the end of the slider close to the positioning post to abut against the outer side of the positioning post;

[0025] Step S3: measuring the initial zero position value; controlling the positioning column to move upward through the upper die, and separating the positioning column from the assembly; measuring the position of the slider away from one end of the positioning hole through the measuring component, and recording it as the initial zero position value;

[0026] Step S4: During punching, after punching the first sheet, the position of the slider away from one end of the positioning hole is measured by the measuring component, which is recorded as the working displacement value of the slider; when the working displacement values ​​of all sliders are 0, the punching machine worktable does not move;

[0027] If the working displacement value of the adjacent sliders is not 0, a right triangle is formed with the sliding directions of the two sets of sliders as the right-angled sides and the moving direction of the punching table as the hypotenuse, where the vertex of the right triangle is on the axis of the positioning column; the movement amount of the punching table in the moving direction of the punching table is calculated, and the displacement of the table is the length of the hypotenuse of the right triangle;

[0028] Step S5: after punching n sheets, the displacement value of the slider when in contact with the positioning column is measured by the measuring component, and the zero position value of the slider is calculated, where the zero position value is the difference between the displacement value and the initial zero position value;

[0029] If the slider's zero return value is 0, the mold will not move on the workbench;

[0030] If the zero return value of the slider is not 0, a right triangle is formed with the sliding directions of the two adjacent groups of sliders as the right-angled side and the movement direction of the mold as the hypotenuse, wherein the vertex of the right triangle is on the axis of the positioning column; the mold movement amount in the movement direction is obtained, and the mold movement amount is the length of the hypotenuse of the right triangle.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention can detect when the stamping equipment is using the die for production, under load operation state, at different blanking speeds, accurately record and accurately detect through the measuring component, thereby obtaining the actual load condition operation state accuracy of the stamping equipment and the die;

[0033] When the present invention is used for detection, it avoids the drawback of inaccurate detection accuracy caused by restrictive factors such as cleaning solvents, oil and gas, metal particle dust, insulating paint dust, and strong magnetism in the stamping production working condition environment;

[0034] The present invention can effectively distinguish the respective running accuracy and moving direction of the stamping equipment and the die in the stamping production working condition environment;

[0035] The present invention solves the current situation in the industry that it is not yet possible to detect the respective running accuracy of the stamping equipment and the die simultaneously in the stamping production working condition environment, and provides a basis for the overhaul and debugging of the stamping equipment and the structural optimization of the die;

[0036] The proposal of the present invention has a simple and compact structure, is easy to process, easy to detect, and has low cost, and can meet but is not limited to the stamping production scenario. Brief Description of the Drawings

[0037] Figure 1 It is a schematic connection diagram of the assembly, positioning column, and micrometer used as the measuring component in the present invention;

[0038] Figure 2 It is a schematic connection diagram of the assembly, distance measuring component, positioning member, and measuring frame in the present invention;

[0039] Figure 3 It is a schematic structural diagram of the guide plate in the present invention;

[0040] Figure 4 It is a schematic structural diagram of the measuring frame, positioning member, and locking member in the present invention;

[0041] Figure 5 It is a sectional view of the assembly, positioning member, and pressing member in the present invention;

[0042] Figure 6 When the present invention is used for measurement, when the zero return value is 0, the punch table moves along the moving direction of the slider, and the die does not move on the table;

[0043] Figure 7 When the present invention is used for measurement, when the working condition displacement value is 0, the punch table does not move, and the die moves on the table along the moving direction of the slider;

[0044] Figure 8 When the present invention is used for measurement, when both the zero return value and the working condition displacement value are not 0, it means that the punch table moves along the moving direction of the slider, and the die moves on the table along the moving direction of the slider;

[0045] Wherein: 1. Displacement recording device; 11. Assembly; 110. Positioning hole; 111. Positioning seat; 1111. Top seat; 1112. Guide plate; 11121. Slide groove; 1113. Base; 112. Slide block; 113. Compression member; 1131. Pressing block; 1132. Pressure preloading bolt; 12. Positioning column; 13. Alignment sleeve; 2. Measuring assembly; 21. Measuring frame; 211. Mounting hole; 22. Distance measuring assembly; 23. Positioning member; 231. Positioning shaft; 232. Single-row ball retainer; 233. Bushing; 234. Cover plate; 24. Locking member. Detailed implementation mode

[0046] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limit, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "multiple" is two or more. For example, multiple positioning columns refer to two or more positioning columns. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The present invention will be described in detail below.

[0048] In the production movement of stator punching sheets, the crosstalk situation of the stamping equipment and the die in the horizontal direction has a greater impact on the incidence of abnormal die failures, while the parallelism fluctuation value of the upper workbench of the stamping equipment in the operating state has a smaller impact; therefore, the present invention only involves detecting the crosstalk situation in the horizontal direction under load conditions to obtain the displacement operation accuracy;

[0049] As Figures 1 - 8 shown:

[0050] A dynamic stability detection device for high-speed blanking conditions of a stamping equipment and a die, comprising a displacement recording device 1 and a measuring assembly 2 used in cooperation with the displacement recording device 1;

[0051] The displacement recording device 1 includes an assembly 11 installed on the lower die, a positioning post 12 installed on one side of the upper die close to the lower die and slidably matched with the assembly 11 in the vertical direction, and a pilot bushing 13 for coaxial positioning of the positioning post 12 and the assembly 11 and used in cooperation with the tapered hole;

[0052] The assembly 11 includes a positioning seat 111 provided with a positioning hole 110, and four groups of sliders 112 installed on the positioning seat 111 and slidably matched with the positioning seat 111; the four groups of sliders 112 are evenly installed on the positioning seat 111 and form a cross structure in the horizontal direction, and the intersection point is on the axis of the positioning post 12; a chute 11121 communicated with the positioning hole 110 is arranged in the positioning seat 111; the axis of the chute 11121 is perpendicular to the axis of the positioning hole 110; the chute 11121 is arranged corresponding to the slider one by one;

[0053] Preferably, one end of the slider 112 close to the positioning hole 110 is provided with an abutting plane in contact with the outer side of the positioning post 12; when there are four groups of sliders 112, the inner side planes of the sliders 112 form a regular quadrilateral and are in contact and cooperation with the positioning post 12; with this setting, the contact between the slider 112 and the positioning post 12 is a line contact, rather than an arc surface; if it is an arc surface contact, although the wear is reduced and the service life is improved, when moving in a direction not perpendicular to the axis of the slider 112, there is a difference between the actual movement value of the positioning post 12 and the movement value of the slider 112, which also makes the movement of the slider 112 unable to truly reflect the movement amount of the positioning post 12, resulting in inaccurate measurement;

[0054] During use, the device is assembled. The positioning post 12 is sleeved in the positioning hole 110 through the pilot bushing 13. The positioning post 12 is installed below the upper die, and the assembly 11 is installed on the lower die. The equipment moves upward, and after removing the pilot bushing 13, the equipment moves downward. First, control the slider 112 to abut against the positioning post 12, and then control the positioning post 12 to move upward and separate from the positioning hole 110; the position of one end of the slider 112 far from the positioning hole 110 is measured by the measuring assembly 2 and recorded as the initial zero position value;

[0055] Then perform load blanking. During blanking, the positioning post 12 will move up and down vertically along with the upper die. After the first punching piece, the movement error of the positioning post 12 in the horizontal direction will push the slider 112 to move outward. After the movement of the positioning post 12 stops, the slider 112 will stop and remain in the same position under the action of friction; control the punch table to move upward so that the positioning post 12 is separated from the assembly 11, and measure the position of the end of the slider 112 away from the positioning hole 110 through the measuring component 2, which is recorded as the working condition displacement value of the slider 112; calculate the movement amount of the punch table in the movement direction of the punch table according to the Pythagorean theorem; the movement amount of the punch table when punching the first punching piece, and the movement amount of the punch table represents the movement amount of the punch table in the movement direction of the slider 112.

[0056] Then continue with load blanking. After blanking n punching pieces, control the slider 112 to contact and abut against the positioning post 12; control the punch table to move upward so that the positioning post 12 is separated from the assembly 11, and measure the position of the end of the slider 112 away from the positioning hole 110 through the measuring component 2 to obtain the displacement value of the slider 112; calculate the difference between the displacement value and the initial zero position value, and this difference is the zero return position value of the slider 112; calculate the movement amount of the die in the movement direction according to the Pythagorean theorem; the die includes an upper die and a lower die, and the movement direction of the die is the movement direction of the upper die or the reverse movement direction of the lower die.

[0057] During blanking, the following three situations will occur:

[0058] (1) As Figure 6 shown, when the zero return position value is 0, the punch table moves along the movement direction of the slider 112, and the die does not move on the punch table;

[0059] (2) As Figure 7 shown, when the working condition displacement value is 0, the punch table does not move, and the die moves along the movement direction of the slider 112 on the punch table;

[0060] (3) As Figure 8 shown, when both the zero return position value and the working condition displacement value are not 0, it means that the punch table moves along the movement direction of the slider 112, and the die moves along the movement direction of the slider 112 on the punch table;

[0061] In some possible implementation manners, the positioning seat 111 includes a top seat 1111, a guide plate 1112, and a base 1113 that are coaxially arranged from top to bottom in sequence;

[0062] The sliding grooves 11121 are respectively arranged on one side of the guiding plate 1112 close to the top seat 1111 and one side close to the base seat 1113, so that the sliding blocks 112 are arranged in a stepped layout in the horizontal direction. When using a micrometer as the measuring component 2 for measurement, the outer cylindrical surface of the corresponding positioning seat 111 of the measured sliding block 112 can be used as the measurement reference to avoid interference with the sliding block 112 during measurement; specifically, when there are four groups of sliding grooves 11121, two adjacent groups are arranged on the side close to the top seat 1111, and the other two adjacent groups are on the side close to the base seat 1113.

[0063] In some possible implementation manners, in order to effectively improve the measurement accuracy of the displacement of the sliding block 112, the sliding block 112 is moved in the horizontal direction only under the drive of the positioning column 12; a pressing member 113 is arranged on each group of sliding blocks 112; the pressing member 113 includes a pressing block 1131 installed above the sliding block 112 and in abutting cooperation with the sliding block 112, and a pressure pre-tightening bolt 1132 passing through the top seat 1111 and providing a pre-tightening pressure to the pressing block 1131.

[0064] Through the arrangement of the pressure pre-tightening bolt 1132 and the pressing block 1131, the pressing block 1131 will effectively increase the friction force and limit the free movement of the sliding block 112; specifically, during the measurement of the initial zero value, the working condition displacement value, and the return zero value, after the sliding block 112 contacts and abuts against the positioning column 12, the pressure pre-tightening bolt 1132 is screwed to make the pressing block 1131 abut tightly against the sliding block 112, so as to avoid the displacement of the sliding block 112 when the positioning column 12 is separated from the assembly 11 and affect the measurement accuracy.

[0065] In some possible implementation manners, the positioning hole 110 includes a tapered hole arranged on the side of the top seat 1111 close to the upper die, and a cylindrical hole connected to the small end of the tapered hole and coaxial therewith; through the arrangement of the tapered hole, when the measuring component 2 is matched with the positioning hole 110 for measurement, a small taper fit is realized, ensuring the rotation accuracy and stability of the measuring component 2.

[0066] The setting of the pilot bushing 13 enables the positioning column 12 and the assembly 11 to ensure their coaxiality (rough positioning) relationship through the pilot bushing 13 during assembly.

[0067] In some possible embodiments, in order to effectively cooperate with the positioning hole 110 on the assembly 11 to achieve measurement; the measurement assembly 2 includes a measurement frame 21 in an L-shaped structure, a distance measurement assembly 22 installed on the measurement frame 21 and cooperating with the slider 112, a positioning member 23 installed on the measurement frame 21 and sleeved in the positioning hole 110, and a locking member 24 for locking the measurement frame 21 and the distance measurement assembly 22; the positioning member 23 is rotationally matched with the positioning hole 110, so that the distance measurement assembly 22 can be adjusted to a facing position with the slider 112 to achieve effective measurement.

[0068] In some possible embodiments, the measurement frame 21 includes a cross bar located above the top seat 1111 and used for installing the positioning member 23, and a vertical bar connected to one end of the cross bar; an installation hole 211 is provided on the vertical bar along the length direction of the vertical bar; the measurement end of the distance measurement assembly 22 is installed in the installation hole 211;

[0069] Specifically, the distance measurement assembly 22 is a contact type distance measurement sensor;

[0070] Preferably, there are two groups of installation holes 211; and they are arranged in a staggered layer corresponding to the slider 112. By installing the distance measurement assembly 22 in different installation holes 211, it can cooperate with the sliders 112 at different heights to achieve measurement; the measurement end of the distance measurement assembly 22 is in the installation hole 211, and the locking of the measurement assembly 2 is realized through the cooperation of the locking member 24, the locking hole and the installation hole 211.

[0071] In some possible embodiments, in order to effectively realize the cooperative installation of the positioning member 23 with the cross bar and the positioning hole 110; the positioning member 23 includes a positioning shaft 231 connected to the measurement frame 21 by a bolt, a plurality of groups of single-row ball retainers 232 sleeved outside the positioning shaft 231 and arranged in sequence along the axial direction of the positioning shaft 231, a bushing 233 arranged between adjacent two groups of single-row ball retainers 232 and sleeved outside the positioning shaft 231, and a cover plate 234 arranged at the bottom of the positioning shaft 231 and connected to the positioning shaft 231; the positioning shaft 231 is connected to the vertical bolt to realize the connection and fixation with the cross bar. The single-row ball retainers 232 are sleeved outside the positioning shaft 231. The bushing 233 is arranged between adjacent two groups of single-row ball retainers 232 and sleeved outside the positioning shaft 231. The cover plate 234 is arranged at the bottom of the positioning shaft 231 for fixing the single-row ball retainers 232 and the bushing 233; specifically, a threaded pin is sleeved in the positioning shaft 231, and the cover plate 234 is connected to the threaded pin by a screw, and the bolt passes through the cross beam and is connected to the threaded pin.

[0072] By sleeving at least two sets of single-row ball retainers 232 axially along the outer side of the positioning shaft 231 and sleeving a bushing 233 between adjacent single-row ball retainers 232, the problem of the difference in the circumferences of the upper and lower rotations generated when multiple sets of single-row ball retainers 232 rotate and roll in the positioning hole 110 is avoided, thus preventing the problem of affecting the measurement accuracy.

[0073] In some possible embodiments, the measuring assembly 2 is a micrometer. When using a micrometer, the frame of the micrometer is sleeved on the outer side of the assembly 11, one end of the anvil contacts and abuts against the outer side surface of the assembly 11, and the micrometer screw contacts and abuts against the measured slider 112 under the drive of the knob to achieve measurement.

[0074] A detection method for a detection device of the dynamic stability of a stamping equipment and a die under high-speed blanking conditions as described above. The four sliders 112 include the first slider, the second slider, the third slider, and the fourth slider. The axes of the first slider and the third slider are in the same vertical plane, and the axes of the second slider and the fourth slider are in the same vertical plane.

[0075] When performing the detection, it specifically includes the following steps:

[0076] Step S1: Insert the positioning post 12 into the positioning hole 110 of the assembly 11 through the pilot bushing 13, install the assembly 11 on the lower die, and connect the positioning post 12 to the upper die.

[0077] Step S2: The upper die moves upward, driving the positioning post 12 upward. After removing the pilot bushing 13, the upper die moves downward and drives the positioning post 12 downward, adjusting the end of the slider 112 close to the positioning post 12 to contact and abut against the outer circular side of the positioning post 12.

[0078] Step S3: Measure the initial zero position value. The upper die controls the positioning post 12 to move upward, and the positioning post 12 is separated from the assembly 11. The position of the end of the slider 112 far from the positioning hole 110 is measured by the measuring assembly 2 and recorded as the initial zero position value.

[0079] Step S4: During blanking, after blanking the first punching sheet, the positions of the ends of two adjacent sliders 112 in the slider 112 far from the positioning hole 110 are measured by the measuring assembly 2 and recorded as the working condition displacement values of the slider 112. When the working condition displacement values of all sliders 112 are 0, the punching press workbench does not move.

[0080] If the working condition displacement values of adjacent sliders 112 are not 0, then a right triangle is formed with the sliding directions of the two sliders 112 as the right sides and the moving direction of the punching press workbench as the hypotenuse. The vertex of the right triangle is on the axis of the positioning post 12. Calculate the movement amount of the workbench in the moving direction of the punching press workbench. The lengths of the two right sides are the working condition displacement values of the two sliders, and the workbench displacement amount is the length of the hypotenuse of the right triangle.

[0081] Specifically, if the working condition displacement value is 0, it means that the upper workbench of the punching machine does not move in the direction of the slider 112.

[0082] As Figure 6 shown, when the return-to-zero value is 0, the working condition displacement value of the first slider is 0.07 mm, and the working condition displacement value of the second slider is 0.05 mm; among them, the connection line between the intersection point of the movement of the slider 112 and the center of the positioning column 12 in the initial state is the movement direction of the upper workbench of the punching machine; according to the Pythagorean theorem, the movement amount of the workbench of the punching machine in the movement direction can be calculated as 0.086 mm.

[0083] The center of the positioning column 12 in the initial state refers to the center when the positioning column 12 is installed through the pilot bushing 13, that is, the center of the positioning column 12 when testing the initial zero value.

[0084] Step S5: After punching n punching sheets, measure the displacement value when the slider 112 contacts the positioning column 12 through the measuring component 2, and calculate the return-to-zero value of the slider 112. The return-to-zero value is the difference between the displacement value and the initial zero value; if the return-to-zero value of the slider 112 is 0, the mold does not move on the workbench.

[0085] If the return-to-zero value of the slider 112 is not 0, a right triangle is formed with the sliding directions of two adjacent groups of sliders 112 as the right sides and the movement direction of the upper die or the reverse movement direction of the lower die as the hypotenuse, where the vertex of the right triangle is on the axis of the positioning column 12; obtain the movement amount of the mold in the movement direction of the upper die or the reverse movement direction of the lower die, and the movement amount of the mold is the length of the hypotenuse of the right triangle.

[0086] A right triangle is formed with the sliding directions of two groups of sliders 112 as the right sides and the movement direction of the upper die or the reverse movement direction of the lower die as the hypotenuse, where the vertex of the right triangle is on the axis of the positioning column 12; obtain the movement amount of the upper die in the movement direction or the lower die in the reverse movement direction. The length of the right side is the return-to-zero value of the two groups of sliders, and the movement amount of the mold is the length of the hypotenuse of the right triangle.

[0087] Specifically, the difference between the displacement value after punching n punching sheets and the initial zero value being 0 means that there is no movement between the upper die and the lower die in the movement direction of the slider 112.

[0088] Among them, the connection line between the intersection point of the movement of the slider 112 and the center of the positioning column 12 in the initial state is the movement direction of the upper die or the reverse movement direction of the lower die.

[0089] As Figure 7As shown, if the working condition displacement value is 0, the difference value of slider 1 (i.e., the zero return value) is 0.07 mm, the difference value of slider 2 is 0.05 mm, the difference value of slider 3 is -0.07 mm, and the difference value of slider 2 is -0.05 mm; according to the Pythagorean theorem, the die movement amount in the running direction of the upper die or the reverse movement direction of the lower die can be calculated as 0.0086 mm.

[0090] As Figure 8 shown, if the working condition displacement value of slider 1 is 0.07 mm and the working condition displacement value of slider 2 is 0.05 mm, the difference value of slider 1 (i.e., the zero return value) is 0.03 mm, the difference value of slider 2 (i.e., the zero return value) is 0.04 mm, the difference value of slider 3 (i.e., the zero return value) is -0.03 mm, and the difference value of slider 2 (i.e., the zero return value) is -0.04 mm; the table movement amount of the punch table in the movement direction is calculated as 0.086 mm, and the die movement amount in the running direction of the upper die or the reverse movement direction of the lower die is 0.05 mm.

[0091] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die, characterized in that, It includes a displacement recording device and a measuring component used in cooperation with the displacement recording device; The displacement recording device includes an assembly installed on the lower die and a positioning column installed on one side of the upper die close to the lower die and slidably matched with the assembly in the vertical direction; The assembly includes a positioning seat provided with a positioning hole and at least four groups of sliders installed on the positioning seat and slidably matched with the positioning seat; a chute communicated with the positioning hole is arranged in the positioning seat; the axis of the chute is perpendicular to the axis of the positioning hole; the chute and the slider are arranged in one-to-one correspondence.

2. The dynamic stability detection device for the high-speed blanking working conditions of a stamping equipment and a die according to claim 1, wherein The positioning seat includes a top seat, a guide plate, and a base coaxially arranged from top to bottom in sequence; The chute is arranged on one side of the guide plate close to the top seat and one side close to the base; one end of the slider close to the positioning hole is provided with an abutting plane in contact with the positioning column.

3. The dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 2, wherein, A pressing member is arranged on each group of the sliders; the pressing member includes a pressing block installed above the slider and in abutting cooperation with the slider, and a pressure pre-tightening bolt passing through the top seat and providing a pre-tightening pressure to the pressing block.

4. The dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 2, wherein, Both the slider and the chute are four groups, and the four groups of sliders form a cross structure, and the center of the cross structure is on the axis of the positioning column.

5. The dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 2, wherein The positioning hole includes a conical hole arranged on one side of the top seat close to the upper die and a cylindrical hole connected to the small end of the conical hole and coaxial with it; the displacement recording device further includes a guiding sleeve used for coaxial positioning of the positioning column and the assembly and used in cooperation with the conical hole.

6. The dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 5, characterized in that, The measuring component includes an L-shaped measuring frame, a ranging component installed on the measuring frame and used in cooperation with the slider, a positioning member installed on the measuring frame and sleeved in the positioning hole, and a locking member used for locking the measuring frame and the ranging component.

7. A dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 6, characterized in that, The measuring frame includes a cross bar located above the top seat and used for installing the positioning member, and a vertical bar connected to one end of the cross bar; mounting holes are arranged on the vertical bar along the length direction of the vertical bar; the measuring end of the ranging component is installed in the mounting hole.

8. The dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to claim 6, wherein, The positioning member includes a positioning shaft connected to the measuring frame by bolts, multiple groups of single-row ball retainers sleeved on the outer side of the positioning shaft and arranged in sequence along the axial direction of the positioning shaft, a bushing arranged between adjacent two groups of single-row ball retainers and sleeved on the outer side of the positioning shaft, and a cover plate arranged at the bottom of the positioning shaft and connected to the positioning shaft.

9. A dynamic stability detection device for the high-speed blanking working condition of a stamping equipment and a die according to any one of claims 1-5, characterized in that, The measuring component is a micrometer.

10. A detection method for a dynamic stability detection device of a stamping equipment and die high-speed blanking working condition according to any one of claims 1-9, characterized in that, Specifically, it includes the following steps: Step S1: Sleeve the positioning column into the positioning hole of the assembly, and make the positioning column coaxial with the positioning hole. Install the assembly on the lower die and connect the positioning column to the upper die; Step S2: Adjust one end of the slider close to the positioning column to be in abutting contact with the outer side of the positioning column; Step S3: Measure the initial zero position value; control the positioning column to move upward through the upper die, and the positioning column is separated from the assembly; measure the position of one end of the slider away from the positioning hole through the measuring component, and record it as the initial zero position value; Step S4: During blanking, after blanking the first blanking sheet, measure the positions of one ends of the sliders away from the positioning hole through the measuring component, and record them as the working condition displacement values of the sliders; when the working condition displacement values of all sliders are 0, the punch press workbench does not move; If the working displacement values of adjacent sliders are not 0, a right triangle is formed with the sliding directions of two groups of sliders as the right sides and the moving direction of the punch press workbench as the hypotenuse, where the vertex of the right triangle is on the axis of the positioning column; calculate the workbench movement amount in the moving direction of the punch press workbench, and the workbench displacement amount is the length of the hypotenuse of the right triangle. Step S5: After blanking n punching sheets, measure the displacement value when the slider contacts the positioning column through the measuring component, and calculate the slider return-to-zero value, where the return-to-zero value is the difference between the displacement value and the initial zero value. If the return-to-zero value of the slider is 0, the die does not move on the workbench. If the return-to-zero value of the slider is not 0, a right triangle is formed with the sliding directions of two adjacent groups of sliders as the right sides and the moving direction of the die as the hypotenuse, where the vertex of the right triangle is on the axis of the positioning column; obtain the die movement amount in the moving direction of the die, and the die movement amount is the length of the hypotenuse of the right triangle.

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