WO2021212423A1

WO2021212423A1 - Soft punch metal micro member forming force measuring device and measuring method

Info

Publication number: WO2021212423A1
Application number: PCT/CN2020/086460
Authority: WO
Inventors: 罗烽; 肖彦; 杨瑞祥; 王蓓; 马将
Original assignee: 深圳大学
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-10-28

Abstract

A soft punch metal micro member forming force measuring device that uses a flexible medium (24) as a punch. The soft punch metal micro member forming force measuring device comprises a force measuring component (12), a forming die (21), a pressing plate (22), and a force applying mechanism (23). The force measuring component (12) is provided on a workbench, a lower surface of the forming die (21) abuts against the force measuring component (12), the lower end of the force applying mechanism (23) applies a downward pressure on and presses a flexible medium (24) that is positioned within a storage bin (221), the flexible medium (24) presses a metal blank (30) to enter a die cavity (211) or cuts the blank by using a peripheral cutting edge of the die cavity (211), and simultaneously the forming die (21) transfers the forming force received by the metal blank (30) to the force measuring component (12), and the force measuring component (12) transmits real-time data of the forming force to a computer. Also disclosed is a measuring method. In the forming force measuring device, the forming die (21) is directly provided on the force measuring component (12), such that the forming force that acts on the metal blank (30) is transferred onto the force measuring component (12) by means of the forming die (21), enabling the forming force received in the micro-forming process of the metal blank (30) to be accurately measured.

Description

Device and method for measuring forming force of soft punch metal micro-part

Technical field

This application relates to the field of micro-forming technology, in particular to a measuring device and a measuring method for the forming force of a soft-punch metal micro-part.

Background technique

The manufacture of micro-parts is an important direction for the development of today's manufacturing industry, and it is also the basis for miniaturization and miniaturization of products. Micro-forming is an important branch of micro-part manufacturing. Micro-forming refers to the use of pressure to force metal blanks (including sheets and bulk materials) to be deformed or cut to prepare a metal processing process in which micro-parts or micro-structures with characteristic dimensions less than 1 mm in two dimensions.

There are many methods for micro-forming of metal blanks, including: traditional mechanical stamping, laser shock forming, electromagnetic shock forming, viscous media forming, hydroforming, high-pressure gas forming, high-pressure water jet forming, and so on.

In the pressure forming process such as micro-drawing and micro-punching, the size of the forming force on the blank and the change of the forming force during the forming process are important factors that affect the quality of micro-parts. In the micro-forming method using viscous medium as a flexible punch, especially in the micro-forming method in which the plastic powder is melted by ultrasonic vibration to form a viscous medium in a short time, the pressure provided by the ultrasonic head cannot be completely transmitted to the blank, and at the same time, Ultrasonic vibration also generates an additional pressure, so it is impossible to install a force measurement component on the punch like the traditional mechanical stamping method and obtain the forming force by directly measuring the punch pressure. In addition, due to the extremely small size of the mold and the part in the micro-forming, the method of measuring the pressure of the viscous medium used in the viscous medium forming of the large-size part cannot be applied to the micro-forming, especially the micro-forming of the viscous medium with the application of ultrasound. middle. The accurate measurement of the forming force and the study of its changing laws are an important part of the research on the micro-forming of metal blanks, and it is also the basis for improving the process and improving the quality of the parts.

Summary of the invention

technical problem

The purpose of the embodiments of the present application is to provide a device for measuring the forming force of a soft punch metal micro-part, which aims to solve the problem of how to accurately measure the forming force of a metal blank.

The solution to the problem

Technical solutions

In order to solve the above technical problems, the technical solutions adopted in the embodiments of this application are:

The first aspect provides a soft punch metal micro-part forming force measuring device, which is used to form a metal blank into a metal micro-part and measure the forming force of the metal blank during the forming process. The soft punch metal micro-part The device for measuring the forming force of a piece includes: a force measuring component, a forming die, a pressing plate, and a force applying mechanism arranged in a flat manner; The metal blank is placed on the forming mold and covers the cavity of the mold cavity; the pressure plate is connected to the force measurement component and presses the metal blank toward the force measurement component, and The pressure plate is provided with a silo at a position corresponding to the mold cavity, the silo penetrates the metal blank and contains a flexible medium, and the lower end of the force applying mechanism applies downward pressure to the flexible medium and pushes it The flexible medium is pressed so that the flexible medium presses the metal blank into the mold cavity to be formed.

In an embodiment, the flexible medium is a plastic powder medium; the force applying mechanism includes an ultrasonic head and a driving system that drives the ultrasonic head to move up and down and high-frequency vibration. The lower end of the ultrasonic head is located in the silo, so The driving system pushes the ultrasonic head toward the flexible medium and drives the ultrasonic head to vibrate at a high frequency to melt the flexible medium into a viscous fluid.

In one embodiment, the flexible medium is a viscous medium.

In an embodiment, the inner diameter of the silo is larger than the outer diameter of the end of the ultrasonic head located in the silo.

In one embodiment, the mold cavity penetrates to the lower surface of the forming mold.

In one embodiment, the opening of the mold cavity is completely located within the range covered by the opening of the bin on the forming mold.

In an embodiment, the plate surface of the pressing plate is larger than the upper surface of the metal blank and completely covers the metal blank, and the metal blank completely covers the opening of the silo upward.

In one embodiment, the forming force measuring device for the soft-punch metal micro-parts further includes a die ring connected to the force measuring head, and a ring hole is opened at the center of the die ring, and the size of the ring hole is the same as that of the die ring. The size of the forming mold is adapted, and the forming mold is embedded and fixed in the ring hole.

In one embodiment, the force measuring component includes a pressure sensor, a force transmitting rod, and a force measuring head. The two ends of the force transmitting rod are respectively connected to the pressure sensor and the force measuring head, and the lower part of the forming mold The surface abuts against the top surface of the force measuring head.

In one embodiment, the forming force measuring device for the soft punch metal micro-parts further includes a pressure plate bolt, the force measuring head is provided with a threaded hole facing the surface of the pressure plate, and the pressure plate corresponds to the position of the threaded hole A through hole is opened, and one end of the pressure plate bolt passes through the through hole and is screw-locked to the threaded hole.

In one embodiment, the threaded holes are provided with a plurality of threaded holes, and each threaded hole is arranged around the circumference of the silo, and the number of the pressure plate bolts and the number of the through holes are all suitable for the number of the threaded holes. Match and set one-to-one correspondence.

In the second aspect, this application also provides a measurement method, which includes the following steps:

S1: Prepare force measurement components, forming molds, pressing plates, and force application mechanisms, and set the force measurement components on the workbench;

S2: Abut the lower surface of the forming mold against the force measuring component, the upper surface of the forming mold is provided with a mold cavity, the mold cavity has a cavity, and the metal blank is placed on the forming mold. Upper and cover the mouth of the mold cavity;

S3: Connect the pressure plate to the force measurement component and press the metal blank toward the forming die. The pressure plate is provided with a silo at a position corresponding to the mold cavity, and the silo penetrates both sides of the pressure plate The board surface and the flexible medium are accommodated;

S4: Extend one end of the force applying mechanism into the silo and push the flexible medium downward, so that the flexible medium drives the metal blank into the mold cavity.

The beneficial effects of the invention

Beneficial effect

The beneficial effect of the forming force measuring device for the soft punch metal micro-parts provided by the embodiments of the present application is that by directly setting the forming die on the force measuring component, the forming force acting on the metal blank is transferred to the force measuring through the forming die On the part, so that the forming force of the metal blank can be accurately measured.

Brief description of the drawings

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a forming force measuring device for a soft punch metal micro-part provided by an embodiment of the application;

Fig. 2 is a partial enlarged view of the forming force measuring device A of the soft punch metal micro-part of Fig. 1.

Invention embodiment

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not used to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "installed on" another component, it can be directly on the other component or indirectly on the other component. When a component is said to be "connected" to another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for ease of description, and do not indicate or imply the device referred to. Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. For those of ordinary skill in the art, the specific meaning of the above terms can be understood according to specific conditions. The terms "first" and "second" are only used for ease of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" means two or more than two, unless otherwise specifically defined.

In order to illustrate the technical solutions provided by the present application, detailed descriptions are given below in conjunction with specific drawings and embodiments.

1 and 2, an embodiment of the present application provides a soft punch metal micro-part forming force measuring device, which is used to form a metal blank 30 and measure the forming force of the metal blank 30 during the micro-forming process. Optionally, the metal blank 30 may be a sheet material or a block material. Optionally, the metal blank 30 is made of red copper. In other embodiments, the metal blank 30 may also be stainless steel, aluminum, and amorphous alloys. The forming force measuring device for the soft punch metal micro-parts includes: a force measuring component 12, a forming die 21, a pressing plate 22, and a force applying mechanism 23. In this embodiment, the forming mold 21 is in the shape of a plate, the lower surface of the forming mold 21 abuts the force measuring component 12, and the upper surface of the forming mold 21 is provided with a cavity 211 having an open cavity structure. Optionally, the shape of the cavity 211 is determined by the shape of the metal part to be processed. The metal blank 30 is laid flat and covers the cavity of the mold cavity 211. The pressing plate 22 is used to press the metal blank 30 toward the forming die 21 so that the edge of the metal blank 30 remains stable during the forming process. The pressure plate 22 is provided with a silo 221 at a position corresponding to the mold cavity 211, and the silo 221 penetrates to the metal blank 30 and contains the flexible medium 24. The lower end of the force applying mechanism 23 extends into the bin 221 and pushes the flexible medium 24 downward so that the flexible medium 24 drives the metal blank 30 into the mold cavity 211, thereby forming the metal blank 30 into a metal micro-part. Optionally, during processing such as micro-drawing and micro-bulging, the force applying mechanism 23 presses the metal blank 30 into and fills the mold cavity 211 through the flexible medium 24, so that the metal blank 30 is formed into a metal micro-part; and During the micro-punching process, the force applying mechanism 23 presses the metal blank 30 into the mold cavity 211 through the flexible medium 24, and at the same time, the edge of the cavity of the cavity 211 cuts the metal blank 30, so that the metal blank 30 is formed into a metal micro Parts. Optionally, the forming force acting on the flexible medium 24 is transmitted to the force measuring component 12 via the forming die 21. The flexible medium 24 is a certain flexible material, and its shape can be arbitrarily changed according to the shape of the mold cavity 211, so that it can be adapted to mold cavities 211 of different shapes.

In this embodiment, by directly setting the forming die 21 on the force measuring part 12, the forming force acting on the metal blank 30 is transmitted to the force measuring part 12 through the forming die 21, so that the forming force measured by the force measuring part 12 It is the same as the forming force on the metal blank 30, and finally the forming force on the metal blank 30 can be accurately measured.

Optionally, the forming die 21 transmits the forming force received by the metal blank 30 to the force measuring component 12, and the force measuring component 12 transmits the forming force data to the computer in real time.

In one embodiment, the flexible medium 24 is a fluid-like viscous medium. Optionally, the flexible medium 24 in this embodiment may be in a fluid state at room temperature. Optionally, the viscous medium is methyl silicone oil. The force applying mechanism 23 transmits the forming force to the metal blank 30 through the viscous medium, so that the metal blank 30 is deformed or punched into shape.

In one embodiment, the flexible medium 24 is a powder medium. Optionally, the powder medium is a polymer powder medium, such as ethylene-vinyl acetate copolymer powder, polyvinyl chloride powder, polyethylene powder, and the like. The force applying mechanism 23 includes an ultrasonic head 231 with a lower end located in the bin 221 and a driving system that drives the ultrasonic head 231 to apply downward pressure and high-frequency vibration. The driving system drives the ultrasonic head 231 to push the flexible medium 24. The ultrasonic head 231 melts the flexible medium 24 into a viscous fluid under high-frequency vibration. The fluid flexible medium 24 can drive the metal blank 30 to fully fill the cavity 211, and when the flexible medium 24 is in a molten state, the metal blank 30 is exposed to The forming force can be measured by the force measuring part 12. Optionally, the time of ultrasonic action is 0.5 s, so that the metal blank 30 is formed into a micro-part in a short time, and after the ultrasonic stops, the molten plastic will solidify by itself.

Optionally, when the ultrasonic head 231 vibrates at a high frequency, the plastic powder will melt into a viscous medium in a short time, thereby forming a composite forming method that comprehensively utilizes ultrasonic and viscous medium, so that the metal blank 30 can be better Fill the cavity 211. The composite forming method formed by the combination of ultrasound and viscous medium also has many unique advantages. For example, ultrasonic vibration can be transmitted to the metal blank 30 through the molten plastic, thereby reducing the material yield stress of the metal blank 30 and reducing the friction between the metal blank 30 and the forming mold 21. The viscous medium formed by the molten plastic can also make The forming force distribution is more uniform, so that the thickness distribution of the formed part is more uniform and the forming limit of the formed part is improved. This application can prepare micro-drawn parts with a smaller size, which is of great significance to the development of micro-forming technology.

In one embodiment, the outer diameter of the lower end of the ultrasonic head 231 located in the silo 221 is smaller than the inner diameter of the silo 221. Optionally, there is a slight gap between the ultrasonic head 231 and the inner wall of the silo 221 to avoid friction and collision with the inner wall of the silo 221 when the ultrasonic head 231 vibrates at high frequency, thereby avoiding damage to the ultrasonic head 231 and the driving system. And to avoid the failure of the entire force applying mechanism 23.

1 and 2, optionally, when the ultrasonic head 231 melts the flexible medium 24 into a viscous medium and applies pressure, a small amount of viscous medium will overflow from the tiny gap between the ultrasonic head 231 and the silo 221. Therefore, the pressure of the ultrasonic head 231 is slightly lost and cannot be completely transmitted to the metal blank 30. As a result, the forming force obtained by the metal blank 30 cannot be obtained by directly measuring the output force of the ultrasonic head 231. In this embodiment, the forming die 21 is a rigid body, which can completely transfer the pressure (forming force) received by the metal blank 30 to the force measuring component 12. Therefore, the forming force measured by the force measuring component 12 is a reflection of the forming force received by the metal blank 30.

In one embodiment, the opening of the mold cavity 211 is completely located within the range covered by the opening of the bin 221 on the forming mold 21. Optionally, in this embodiment, the opening of the silo 221 is circular, the range determined by the silo 221 on the surface of the forming mold 21 is a circle, and the cavity 211 is opened in the circle, so that during the forming process , The flexible medium 24 can completely cover the cavity of the mold cavity 211. Optionally, the cavity 211 may be a circular cavity or an S-shaped micro-channel cavity.

Optionally, during the micro-forming process, the micro-formed product is generally less than 1 mm, and the ultrasonic head 231 should not be too thin, otherwise the ultrasonic head 231 is easy to break, and it is not conducive to operation control. Therefore, the diameter of the ultrasonic head 231 is generally larger than the range covered by the opening of the mold cavity 211. Optionally, the diameter of the ultrasonic head 231 is 5 mm or 10 mm. The size of the silo 221 is determined according to the size of the ultrasonic head 231, and the inner diameter of the silo 221 is generally larger than the range covered by the opening of the mold cavity 211.

In one embodiment, the mold cavity 211 has a groove structure or a channel structure, that is, the mold cavity 211 is opened on the upper surface of the forming mold 21 and has an open cavity structure, and does not penetrate to the lower surface of the forming mold 21. The cross-section of the groove can be trapezoidal, arc-shaped, etc., and the extending direction of the channel is a straight groove or a straight channel, or it can be a curved channel with an extending direction such as the letter S.

In one embodiment, the mold cavity 211 penetrates to the lower surface of the forming mold 21, that is, the mold cavity 211 has a through-hole structure.

In one embodiment, the plate surface of the pressing plate 22 is larger than the upper surface of the metal blank 30 and completely covers the metal blank 30, and the metal blank 30 completely covers the opening of the silo 221 upward. Optionally, the opening of the silo 221 is completely located on the upper surface of the metal blank 30, so that the metal blank 30 can be pressed by the pressing plate 22 during the forming process.

In one embodiment, the force measuring component 12 includes a pressure sensor 123, a force transmitting rod 122, and a force measuring head 121. The two ends of the force transmitting rod 122 are respectively connected to the pressure sensor 123 and the force measuring head 121, and the lower surface of the forming mold 21 is against Connect the top surface of the measuring head 121.

In one embodiment, the forming force measuring device for the soft punch metal micro-parts further includes a pressure plate bolt 16, the force measuring head 121 is provided with a threaded hole facing the surface of the pressure plate 22, and the pressure plate 22 is provided with a through hole at a position corresponding to the threaded hole. One end of the bolt 16 passes through the through hole and is screwed to the threaded hole. Optionally, a plurality of pressure plate bolts 16 are arranged at intervals, and each pressure plate bolt 16 is arranged around the circumference of the bin 221 in an equal arc. The plurality of pressure plate bolts 16 can improve the stability of the connection between the pressure plate 22 and the force measuring component 12, and fix the positions of the forming mold 21 and the metal blank 30, and the mold cavity 211 is directly aligned with the center of the ultrasonic head 231. Optionally, the fastening force of the pressing plate bolt 16 needs to be appropriate, which can not only press the metal blank 30 so that the metal blank 30 does not slide, but also keep the pressing plate 22 flat without warping.

In one embodiment, the forming force measuring device for the soft punch metal micro-parts further includes a die ring 25 connected to the force measuring head, and the forming die 21 is inlaid and fixed in the die ring 25, that is, the die ring 25 passes through a plate bolt 16 a It is fixed on the force measuring head 121, and the center of the mold ring 25 is provided with a ring hole. The size of the ring hole is adapted to the size of the forming mold 21, so that the forming mold 21 can be fixed in the ring hole of the mold ring 25, and It is convenient to quickly replace and install the forming mold 21 with different cavities. The thickness of the die ring 25 is the same as the thickness of the forming die 21, and the outer diameter of the die ring 25 is the same as the pressure plate. In this way, during the forming process, the die ring 25 can keep the pressing plate 22 flat without warping.

Please refer to FIG. 1 and FIG. 2. In one embodiment, the forming force measuring device for the soft punch metal micro-parts further includes a gasket 26 disposed between the die ring 25 and the pressing plate 22. Optionally, the gasket 26 and the metal blank 30 are set to have the same thickness, but in order to make the pressing plate 22 better compress the metal blank 30 and avoid the pressing plate 22 from warping. Generally, a less rigid gasket 26, such as a red copper gasket 26, is provided so that the gasket 26 can undergo certain elastic deformation and become thinner when subjected to the pressure of the pressing plate 22, so as to ensure that the metal blank 30 has sufficient pressing force. Optionally, the thickness of the gasket 26 can also be slightly smaller than the thickness of the metal blank 30. For example, the thickness of the gasket 26 is 5-10um smaller than the thickness of the metal blank 30 to ensure that the metal blank 30 can be compressed. The metal blank 30 is pressed under the premise of keeping the pressing plate 22 from warping, and the metal blank 30 is kept stable during the entire forming process.

In one embodiment, a plurality of shims 26 are provided, and each shim 26 is arranged in an equal arc around the circumference of the mold cavity 211.

In one embodiment, the forming force measuring device for the soft punch metal micro-parts includes a bottom plate 13 for supporting the pressure sensor 123. The bottom plate 13 is laid flat on the workbench and connected to the pressure sensor 123 by bolts. The entire device can be fixed on the workbench of the ultrasonic welding machine through the bottom plate 13, and the bin 221 can be aligned with the ultrasonic head 231, and the position can be kept unchanged during the processing.

This embodiment also provides a measurement method, which is used to measure the forming force of the metal blank 30 in the micro-forming process, and the measurement method includes the following steps:

S1: Prepare the force measuring component 12, the forming mold 21, the pressing plate 22, and the force applying mechanism 23, and set the force measuring component 12 on the workbench;

S2: Abut the lower surface of the forming mold 21 against the force measuring component 12, the forming mold 21 has a cavity 211 with an open cavity structure, and the metal blank 30 is placed in the forming mold 21 Upper and cover the mouth of the mold cavity 211;

S3: Connect the pressure plate 22 to the force measuring component 12 and press the metal blank 30 toward the forming mold 21. The pressure plate 22 has a silo 221 that corresponds to the position of the mold cavity 211 The silo 221 penetrates through the two sides of the pressure plate 22 and contains the flexible medium 24;

S4: Extend the lower end of the force applying mechanism 23 into the silo 221 and push the flexible medium 24 downward so that the flexible medium 24 drives the metal blank 30 into the mold cavity 211, and at the same time The forming force is transferred from the forming die 21 to the force measuring part 12.

The above are only optional embodiments of the present application, and are not used to limit the present application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims

A soft punch metal micro-part forming force measuring device for forming a metal blank into a metal micro-part and measuring the forming force of the metal blank during the forming process, characterized in that the soft-punch metal micro-part The forming force measuring device includes: a force measuring component, a forming die, a pressing plate, and a force applying mechanism; the forming die is plate-shaped and its lower surface abuts against the force measuring component, and the upper surface of the forming die is provided with a cavity, The mold cavity has a cavity, and the metal blank is placed on the forming mold and covers the cavity of the mold cavity; Metal blank, and the pressure plate is provided with a silo at a position corresponding to the mold cavity, the silo penetrates the metal blank and contains a flexible medium, and the lower end of the force applying mechanism applies downward pressure to the flexible medium The pressure and push the flexible medium, so that the flexible medium presses the metal blank into the mold cavity to form.
The forming force measuring device for soft punch metal micro-parts according to claim 1, characterized in that: the flexible medium is a plastic powder medium; the force applying mechanism includes an ultrasonic head and driving the ultrasonic head to move up and down and high-frequency vibration The driving system of the ultrasonic head is located at the lower end of the silo, and the driving system pushes the ultrasonic head toward the flexible medium and drives the ultrasonic head to vibrate at a high frequency to melt the flexible medium into viscosity fluid.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the flexible medium is a viscous medium.
The forming force measuring device for the soft punch metal micro-parts according to claim 2, wherein the inner diameter of the silo is larger than the outer diameter of the end of the ultrasonic head located in the silo.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the mold cavity penetrates to the lower surface of the forming die.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the opening of the mold cavity is completely located within the range covered by the opening of the bin on the forming die.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the plate surface of the pressing plate is larger than the upper surface of the metal blank and completely covers the metal blank, and the metal The blank completely covers the opening of the silo upwards.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the forming force measuring device for the soft punch metal micro-parts further comprises a die ring connected to the force measuring head, and the die A ring hole is opened at the center of the ring, and the size of the ring hole is adapted to the size of the forming mold, and the forming mold is embedded and fixed in the ring hole.
The forming force measuring device for the soft punch metal micro-parts according to claim 1, wherein the force measuring component includes a pressure sensor, a force transmitting rod, and a force measuring head, and both ends of the force transmitting rod are respectively connected The pressure sensor and the force measuring head, and the lower surface of the forming mold abuts against the top surface of the force measuring head.
The forming force measuring device for the soft punch metal micro-parts according to claim 9, wherein the forming force measuring device for the soft punch metal micro-parts further comprises a pressure plate bolt, and the force measuring head faces the pressure plate A threaded hole is opened on the surface of the pressure plate, a through hole is opened at a position corresponding to the threaded hole, and one end of the pressure plate bolt passes through the through hole and is screw-locked to the threaded hole.
The forming force measuring device for soft punch metal micro-parts according to claim 10, characterized in that: the threaded holes are provided with a plurality of threaded holes, each of the threaded holes is arranged around the circumference of the silo, and the pressure plate bolts The number and the number of the through holes are adapted to the number of the threaded holes and set in one-to-one correspondence.
A measuring method for measuring the forming force of a metal blank in the forming process, characterized in that the measuring method includes the following steps:

S1: Prepare force measurement components, forming molds, pressing plates, and force application mechanisms, and set the force measurement components on the workbench;

S2: Abut the lower surface of the forming mold against the force measuring component, the upper surface of the forming mold is provided with a mold cavity, the mold cavity has a cavity, and the metal blank is placed on the forming mold. Upper and cover the mouth of the mold cavity;

S3: Connect the pressure plate to the force measurement component and press the metal blank toward the forming die. The pressure plate is provided with a silo at a position corresponding to the mold cavity, and the silo penetrates both sides of the pressure plate The board surface and the flexible medium are accommodated;

S4: Extend one end of the force applying mechanism into the silo and push the flexible medium downward, so that the flexible medium drives the metal blank into the mold cavity.