Pressure Control Method of Processing Equipment and Processing Equipment

Abstract

The present invention discloses a pressure control method for a processing device and a processing device. The pressure control method for the processing device, the processing device is used for processing a circuit board, the processing device includes a pressure foot device and a workbench, the pressure foot device is used for applying pressure to a workpiece on the workbench, the workpiece has a first area and a second area, and the pressure control method includes: obtaining a preset parameter of the first area on the workpiece; determining the output pressure of the pressure foot device according to the preset parameter; adjusting the pressure of the pressure foot device on the second area of the workpiece based on the output pressure of the pressure foot device, wherein the second area on the workpiece surrounds the first area. By adopting the above solution, the problem that the pressure of the pressure foot device adjusted manually is not reliable enough is solved, there is no tediousness of manual debugging, it is more time-saving and labor-saving, the operation is simple and the versatility is strong.

Description

Technical Field

[0001] The present invention relates to the field of circuit board technology, and particularly to a pressure control method and processing equipment for circuit board processing equipment. Background Art

[0002] When the existing processing equipment processes a workpiece, in order to ensure the processing accuracy of the processed workpiece, currently, a pressure foot device is used to ensure the flatness of the processed workpiece. Due to the superposition of workpieces, there are gaps in the middle, which make the workpiece uneven, so the cutting point is prone to deviation, resulting in poor processing. For example, when the processing equipment is a drilling equipment, when the cutting point deviates, the machine will drill off, and the holes processed will not meet the user's requirements.

[0003] The pressure foot device is connected to the pressure foot through the linkage lever of the air cylinder. The control of the air cylinder is to adjust the air supply pressure into the air cylinder through a pressure regulating valve, and the operator manually adjusts the air supply pressure according to the display value of the air pressure gauge on the air path. The air supply pressure is converted into the output pressure of the pressure foot through the linkage lever of the air cylinder, so as to realize the pressing of the workpiece during the processing process.

[0004] Currently, the output pressure of the pressure foot is controlled by manually adjusting the pressure regulating valve. Different processed workpieces require different pressure foot pressures. For workpieces of the same material, due to superposition, the surface heights are also different. However, the initial pressure of the pressure foot is fixed during the processing process and cannot be manually adjusted. Therefore, the method of manually adjusting the pressure of the pressure foot according to the situation of the workpiece is unreliable, which not only increases the complexity of the operation but also easily leads to errors. Summary of the Invention

[0005] The present invention provides a pressure control method and processing equipment for processing equipment to solve the problem that manually adjusting the pressure of the pressure foot device is not reliable enough.

[0006] According to one aspect of the present invention, a pressure control method for processing equipment is provided. The processing equipment is used for processing a circuit board. The processing equipment includes a pressure foot device and a workbench. The pressure foot device is used to apply pressure to a workpiece on the workbench. The workpiece has a first area and a second area. The pressure control method includes:

[0007] Obtain the preset parameters of the first area on the workpiece;

[0008] Determine the output pressure of the pressure foot device according to the preset parameters;

[0009] Based on the output pressure of the pressure foot device, adjust the pressure of the pressure foot device on the second area of the workpiece, wherein the second area on the workpiece surrounds the first area.

[0010] In an alternative embodiment of the present invention, obtaining the preset parameters of the first area on the workpiece includes:

[0011] Obtaining the preset parameters of the first area on the workpiece in real time;

[0012] Correspondingly, adjusting the pressure of the pressure foot device on the second area of the workpiece includes:

[0013] Adjusting the pressure of the pressure foot device on the second area of the workpiece in real time.

[0014] In an alternative embodiment of the present invention, the processing equipment further includes a detection module for detecting preset parameters;

[0015] The obtaining the preset parameters of the first area on the workpiece in real time includes:

[0016] Obtaining in real time the preset parameters of the first area detected by the detection module.

[0017] In an alternative embodiment of the present invention, the processing equipment further includes a tool and a position positioning mechanism. The position positioning mechanism includes at least one of a Z-axis grating scale and a Z-axis magnetic grating scale, and the tool includes at least one of a drill and a milling cutter;

[0018] The obtaining in real time the preset parameters of the first area detected by the detection module includes:

[0019] Obtaining in real time the detection signal sent by the detection module when the tool contacts the first area, and when the detection signal is obtained, reading the position information of the position positioning mechanism to determine the preset parameters of the first area.

[0020] In an alternative embodiment of the present invention, the processing equipment further includes a detection module and a main shaft. The detection module is used to detect preset parameters, and the main shaft is used to drive the detection module to move; before obtaining the preset parameters of the first area on the workpiece, it further includes:

[0021] Driving the detection module to move to each first area through the main shaft;

[0022] The detection module respectively obtains the preset parameters of each first area;

[0023] Recording the preset parameters of each first area to form a preset parameter library;

[0024] Correspondingly, the obtaining the preset parameters of the first area on the workpiece includes:

[0025] Obtaining the current first area where the main shaft is located on the workpiece;

[0026] Determining the preset parameters of the current first area based on the preset parameter library;

[0027] Correspondingly, determining the output pressure of the pressure foot device according to the preset parameters includes:

[0028] Determining the output pressure of the pressure foot device according to the preset parameters of the current first region.

[0029] In an alternative embodiment of the present invention, before obtaining the preset parameters of the first region on the workpiece, it further includes:

[0030] Establishing a first mapping relationship between the preset parameters and the output pressure of the pressure foot device;

[0031] The determining the output pressure of the pressure foot device according to the preset parameters includes:

[0032] Determining the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship.

[0033] In an alternative embodiment of the present invention, the pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder for regulating the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot for driving the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench;

[0034] The establishing the first mapping relationship between the preset parameters and the output pressure of the pressure foot device includes:

[0035] Establishing a first mapping relationship between the preset parameters and the air supply pressure;

[0036] Correspondingly, the determining the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship includes:

[0037] Determining the air supply pressure mapped to the work preset parameters according to the preset parameters and the first mapping relationship;

[0038] Correspondingly, the adjusting the pressure of the pressure foot device on the second region of the workpiece based on the output pressure of the pressure foot device includes:

[0039] Adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder based on the air supply pressure to adjust the pressure applied by the pressure foot to the second region of the workpiece.

[0040] In an alternative embodiment of the present invention, the processing equipment further includes a tool, and the establishing the first mapping relationship between the preset parameters and the output pressure of the pressure foot device includes:

[0041] Obtaining the preset parameters;

[0042] Adjust the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, control the tool to process the workpiece;

[0043] Determine whether the machining accuracy of the workpiece meets the preset accuracy requirements;

[0044] If so, record the first mapping relationship formed by the current pressure applied by the pressure foot device to the second area of the workpiece and the preset parameters;

[0045] If not, perform the steps of adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, control the tool to process the workpiece.

[0046] In an alternative embodiment of the present invention, the pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder for adjusting the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot for driving the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench;

[0047] The adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, controlling the tool to process the workpiece includes:

[0048] Adjust the air supply pressure supplied by the pressure regulating valve to the cylinder, drive the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and control the tool to process the workpiece;

[0049] Correspondingly, recording the first mapping relationship formed by the current pressure applied by the pressure foot device to the second area of the workpiece and the preset parameters includes:

[0050] Record the first mapping relationship formed by the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters;

[0051] Correspondingly, performing the steps of adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece includes:

[0052] Perform the steps of adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece.

[0053] In an alternative embodiment of the present invention, the first mapping relationship includes a first linear relationship curve. Recording the supply air pressure supplied by the pressure regulating valve to the cylinder and the preset parameter to form the first mapping relationship includes:

[0054] Recording the supply air pressure supplied by the pressure regulating valve to the cylinder and the preset parameter and associating the two;

[0055] Performing linear fitting on the recorded multiple sets of associated supply air pressures and preset parameters to obtain a first linear relationship curve;

[0056] Correspondingly, determining the output pressure of the pressure foot device according to the preset parameter in the first region includes:

[0057] Determining the supply air pressure of the pressure regulating valve based on the point where the first linear relationship curve intersects the preset parameter in the first region.

[0058] In an alternative embodiment of the present invention, the first linear relationship curve includes an inflection point;

[0059] The determining the supply air pressure of the pressure regulating valve based on the point where the first linear relationship curve intersects the preset parameter in the first region includes:

[0060] Determining whether the preset parameter is greater than the preset parameter corresponding to the inflection point;

[0061] If so, determining the supply air pressure of the pressure regulating valve based on the supply air pressure corresponding to the inflection point;

[0062] If not, determining the supply air pressure of the pressure regulating valve based on the point where the first linear relationship curve intersects the preset parameter in the first region.

[0063] In an alternative embodiment of the present invention, the pressure control method of the processing equipment further includes:

[0064] Establishing a second mapping relationship between the input voltage of the pressure regulating valve and the supply air pressure;

[0065] Correspondingly, the adjusting the supply air pressure supplied by the pressure regulating valve to the cylinder based on the supply air pressure to adjust the pressure applied by the pressure foot to the second region of the workpiece includes:

[0066] Determining the input voltage of the pressure regulating valve mapped to the supply air pressure based on the supply air pressure and the second mapping relationship;

[0067] Inputting the input voltage of the pressure regulating valve to the pressure regulating valve to adjust the supply air pressure supplied by the pressure regulating valve to the cylinder, so as to adjust the pressure applied by the pressure foot to the second region of the workpiece.

[0068] In an alternative embodiment of the present invention, establishing the second mapping relationship between the input voltage of the pressure regulating valve and the supply pressure includes:

[0069] Adjust the input voltage of the pressure regulating valve;

[0070] Obtain the supply pressure supplied by the pressure regulating valve to the cylinder based on the input voltage;

[0071] Record the input voltage and the supply pressure to form the second mapping relationship.

[0072] In an alternative embodiment of the present invention, the number of the first region and the second region is multiple. The pressure foot device includes a pressure foot. The first region is the point to be drilled, and the second region is the annular region formed by the pressure foot contacting the workpiece.

[0073] In an alternative embodiment of the present invention, the number of the first region and the second region is multiple. The pressure foot device includes a pressure foot and a brush. The brush is arranged at the lower end of the pressure foot. The first region is the point to be formed, and the second region is the annular region formed by the brush contacting the workpiece.

[0074] In an alternative embodiment of the present invention, the preset parameters include at least one of a workpiece thickness value, a workpiece hardness value, a workpiece elasticity value, and a workpiece flatness value.

[0075] According to another aspect of the present invention, there is provided a pressure control method for a processing device. The processing device is used for processing a circuit board. The processing device includes a pressure foot device and a workbench. The pressure foot device is used to apply pressure to a workpiece on the workbench. The pressure control method includes:

[0076] Obtain preset parameters;

[0077] Determine the output pressure of the pressure foot device according to the preset parameters;

[0078] Based on the output pressure of the pressure foot device, adjust the pressure applied by the pressure foot device to the workpiece.

[0079] According to another aspect of the present invention, there is provided a processing device, which includes a tool, a pressure foot device, and a control system;

[0080] The tool is used for processing the first region of the workpiece;

[0081] The pressure foot device is used to apply pressure to the second region of the workpiece. The second region surrounds the first region;

[0082] The control system is electrically connected to the pressure foot device, and is configured to obtain preset parameters of the first area on the workpiece, determine the output pressure of the pressure foot device according to the preset parameters, and adjust the pressure applied by the pressure foot device to the second area of the workpiece based on the output pressure of the pressure foot device.

[0083] In the technical solution of the embodiment of the present invention, by obtaining the preset parameters of the first area on the workpiece; then determining the output pressure of the pressure foot device according to the preset parameters; and finally adjusting the pressure of the pressure foot device on the second area of the workpiece based on the output pressure of the pressure foot device, wherein the second area on the workpiece surrounds the first area. It can automatically adjust the pressure of the pressure foot device on the workpiece according to the preset parameters of the current workpiece, solve the problem that the manual adjustment of the pressure of the pressure foot device is not reliable enough, without the tediousness of manual debugging, and is more time-saving, labor-saving, simple to operate and has strong versatility.

[0084] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0085] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0086] Figure 1 It is a flowchart of a pressure control method for a processing device provided in Embodiment 1 of the present invention;

[0087] Figure 2 It is a flowchart of a pressure control method for a processing device provided in Embodiment 2 of the present invention;

[0088] Figure 3 It is a flowchart of a pressure control method for a processing device provided in Embodiment 3 of the present invention;

[0089] Figure 4 It is a relationship diagram of the air pressure and preset parameters of an electro-pneumatic proportional valve provided in Embodiment 3 of the present invention;

[0090] Figure 5 It is a flowchart of a pressure control method for a processing device provided in Embodiment 4 of the present invention;

[0091] Figure 6 It is a relationship diagram of the air pressure and input voltage of an electro-pneumatic proportional valve provided in Embodiment 4 of the present invention.

[0092] Figure 7 Flow chart of a pressure control method for a processing device provided in Embodiment 5 of the present invention;

[0093] Figure 8 Schematic structural diagram when a processing device processes a workpiece provided in Embodiment 6 of the present invention;

[0094] Figure 9 Another schematic structural diagram when a processing device processes a workpiece provided in Embodiment 6 of the present invention;

[0095] Figure 10 Another schematic structural diagram when a processing device processes a workpiece provided in Embodiment 6 of the present invention;

[0096] Figure 11 Principle block diagram of an electro - proportional valve provided in Embodiment 6 of the present invention.

[0097] Wherein: 1. Tool; 2. Pressing foot; 21. First half - foot; 22. Second half - foot; 3. Pressure regulating valve; 4. Control module; 5. Processing module; 6. Detection module; 7. Workpiece; 8. Workbench; 9. Cylinder; 10. Brush. Detailed implementation manners

[0098] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0099] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above - mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0100] Embodiment 1

[0101] Figure 1The flowchart of a pressure control method for a processing device provided in the first embodiment of the present invention. This embodiment is applicable to the case of PCB processing drilling or PCB forming. At this time, the workpiece is the PCB. When used for PCB processing drilling, the processing device can be a drilling device. When used for PCB forming, the processing device is a routing machine. This method can be executed by the control system of the processing device. The control system can be implemented in the form of hardware and / or software and can be configured in the processing device. The processing device includes a pressure foot device and a workbench. The pressure foot device is used to apply pressure to the workpiece on the workbench. The pressure foot device refers to the component used to press the workpiece. The workpiece refers to the component to be drilled. The workpiece has a first area and a second area. The workbench refers to the platform used to place the workpiece for drilling. As Figure 1 shown, the pressure control method of the processing device includes:

[0102] S110. Obtain the preset parameters of the first area on the workpiece.

[0103] Among them, the preset parameters refer to the parameters of the workpiece to be processed that will affect the processing situation. For example, it may include one or more of the workpiece thickness value, workpiece hardness value, workpiece elasticity value, and workpiece flatness value. The preset parameters can be manually input by the user or detected by setting some modules for detecting the preset parameters. The specific method for obtaining the preset parameters is not specifically limited here. The first area refers to the area where the processing device processes the workpiece.

[0104] S120. Determine the output pressure of the pressure foot device according to the preset parameters.

[0105] Among them, when processing the workpiece, the pressure foot device will press the workpiece. The output pressure of the pressure foot device refers to the pressure that the pressure foot device should apply to the workpiece when pressing the workpiece. When the preset parameters are different, the corresponding output pressure of the pressure foot device will be different. For example, when the preset parameter is the workpiece thickness value and the workpiece is thinner, if the output pressure of the pressure foot device is too large, the workpiece is easily damaged. When the workpiece is thicker, if the output pressure of the pressure foot device is too small, the workpiece cannot be firmly pressed, and the workpiece may shift and shake during processing. Another example is when the preset parameter is the workpiece elasticity value. When the elasticity value of the workpiece is large, if the output pressure of the pressure foot device is small, it is difficult to firmly press the workpiece. When the elasticity value of the workpiece is large and the other parameter values of the workpiece are the same, the pressure foot device does not need to apply too much pressure to firmly press the workpiece. Therefore, it is more accurate to determine the output pressure of the pressure foot device during this processing according to the obtained preset parameters.

[0106] S130. Based on the output pressure of the pressure foot device, adjust the pressure of the pressure foot device on the second area of the workpiece, where the second area on the workpiece surrounds the first area.

[0107] Among them, the second region refers to the region that contacts the workpiece when the pressure foot device presses the workpiece, and the output pressure of the pressure foot device refers to the pressure that the pressure foot device should exert on the workpiece under the current preset parameters. By adjusting the pressure of the pressure foot device on the workpiece based on the output pressure of the pressure foot device, the pressure of the pressure foot device on the workpiece can be adjusted to adapt to the workpiece with the current preset parameters being processed.

[0108] In the above solution, by obtaining the preset parameters of the first region on the workpiece; then determining the output pressure of the pressure foot device according to the preset parameters; and finally adjusting the pressure of the pressure foot device on the second region of the workpiece based on the output pressure of the pressure foot device, where the second region on the workpiece surrounds the first region. It can automatically adjust the pressure of the pressure foot device on the workpiece according to the preset parameters of the current workpiece, solve the problem that the manual adjustment of the pressure of the pressure foot device is not reliable enough, without the tediousness of manual debugging, and is more time-saving, labor-saving, simple to operate and has strong versatility.

[0109] In an alternative embodiment of the present invention, the obtaining of the preset parameters of the first region on the workpiece includes:

[0110] Obtaining the preset parameters of the first region on the workpiece in real time.

[0111] Correspondingly, the adjusting of the pressure of the pressure foot device on the second region of the workpiece includes:

[0112] Adjusting the pressure of the pressure foot device on the second region of the workpiece in real time.

[0113] Among them, obtaining the preset parameters of the first region on the workpiece in real time means obtaining the preset parameters of the first region of the workpiece being processed currently during the real-time processing. After obtaining the preset parameters in real time, the output pressure of the pressure foot device can be determined according to the preset parameters obtained in real time, and finally the pressure of the pressure foot device on the second region of the workpiece can be adjusted in real time based on the output pressure of the pressure foot device. Since the positions of the first region and the second region may be different when processing the workpiece, in this way, the pressure of the pressure foot device on the second region of the workpiece can be adjusted in real time according to the preset parameters of the first region at different positions during the workpiece processing, so as to ensure the processing accuracy of each position of the workpiece.

[0114] In an alternative embodiment of the present invention, the processing equipment further includes a detection module, and the detection module is used to detect the preset parameters;

[0115] The obtaining of the preset parameters of the first region on the workpiece in real time includes:

[0116] Obtaining the preset parameters of the first region detected by the detection module in real time.

[0117] Among them, the detection module refers to a module that can detect preset parameters. By setting the detection module, the preset parameters can be automatically detected by the detection module during the processing. Thus, by only obtaining in real time the preset parameters of the first area detected by the detection module, the real-time acquisition of the preset parameters of the first area can be achieved.

[0118] Exemplarily, the processing device further includes a tool and a position positioning mechanism. The position positioning mechanism includes at least one of a Z-axis grating scale and a Z-axis magnetic scale. The tool includes at least one of a drill and a milling cutter.

[0119] The real-time acquisition of the preset parameters of the first area detected by the detection module includes:

[0120] Real-time acquisition of the detection signal sent by the detection module when the tool contacts the first area, and when the detection signal is obtained, reading the position information of the position positioning mechanism to determine the preset parameters of the first area.

[0121] Among them, the tool is the tool for processing the workpiece. According to the different processing devices, the tool will also be correspondingly different. When the processing device is a drilling device, the tool is a drill. When the processing device is a milling machine, the tool is a milling cutter. The grating scale, also known as the grating scale displacement sensor (grating scale sensor), is a measurement feedback device that works based on the optical principle of the grating. The Z-axis grating scale refers to the grating scale vertically arranged for measuring the Z-axis position. The detection module can conveniently determine the preset parameters by reading the position information of the Z-axis grating scale. The magnetic scale refers to a method similar to the recording technology. The process of recording equally spaced magnetic waves on the magnetic scale (or disk) by the recording head is called magnetic recording. The magnetic scale with the magnetic waves already recorded is called the magnetic scale. The interval distance between adjacent magnetic waves on the magnetic scale is called the wavelength of the magnetic scale, also known as the pitch (grating pitch) of the magnetic scale. The Z-axis magnetic scale refers to the magnetic scale arranged along the vertical direction for measuring the Z-axis position. In a specific embodiment, the preset parameters detected by the Z-axis grating scale and the Z-axis magnetic scale are the workpiece thickness values.

[0122] When the workpiece to be processed is a circuit board with a conductive layer, the conductive medium at this time is the conductive layer, and the detection module can directly contact the conductive layer on the surface of the circuit board to obtain the preset parameters of the first region. For workpieces without a conductive layer, a conductive medium, such as an aluminum sheet, can be added to the surface of the workpiece. At this time, the first region is on the conductive medium, and then the detection module can contact the conductive medium on the surface of the workpiece to obtain the preset parameters. Therefore, when machining different positions on the surface of the workpiece, different conductive media corresponding to different first regions will be contacted. At this time, the detection module will send a detection signal, so the position information of the position positioning mechanism read when the detection signal is obtained reflects the preset parameters of this position. Therefore, the preset parameters of the first region detected by the detection module can be obtained in real time.

[0123] In an alternative embodiment of the present invention, the processing equipment further includes a detection module and a spindle. The detection module is used to detect preset parameters, and the spindle is used to drive the detection module to move; before obtaining the preset parameters of the first region on the workpiece, it further includes:

[0124] Drive the detection module to move to each first region through the spindle.

[0125] The detection module respectively obtains the preset parameters of each of the first regions.

[0126] Record the preset parameters of each of the first regions to form a preset parameter library.

[0127] Correspondingly, the obtaining of the preset parameters of the first region on the workpiece includes:

[0128] Obtain the current first region where the spindle is located on the workpiece.

[0129] Determine the preset parameters of the current first region based on the preset parameter library.

[0130] Correspondingly, determining the output pressure of the pressure foot device according to the preset parameters includes:

[0131] Determine the output pressure of the pressure foot device according to the preset parameters of the current first region.

[0132] Among them, the spindle refers to a component that can drive the detection module to move. When the detection module moves to different positions, it can detect the preset parameters of different positions. There are multiple first regions on the workpiece, so by driving the detection module to move to each first region through the spindle, the detection module can respectively obtain the preset parameters of each first region.

[0133] The preset parameter library refers to a database that records the preset parameters for each first region. The current first region refers to the first region where the spindle on the workpiece is located at this time. By forming the preset parameter library in advance, during subsequent processing, according to the current first region where the spindle is located on the workpiece, the corresponding preset parameters for the current first region can be found in the preset parameter library, and the output pressure of the pressure foot device can be determined based on the preset parameters of the current first region. Therefore, during processing, the output pressure of the pressure foot output device can be adjusted according to the change in the processing position, ensuring the processing accuracy of each position of the workpiece.

[0134] In an alternative embodiment of the present invention, the number of the first regions and the second regions is multiple. The pressure foot device includes a pressure foot. The first region is the point to be drilled, and the second region is the annular region formed by the pressure foot contacting the workpiece. Among them, in a specific embodiment, the processing device is a drilling device. At this time, processing the workpiece means drilling the workpiece. The point to be drilled refers to the point on the workpiece where drilling is required. Since the pressure foot device presses the workpiece through the pressure foot during processing, the second region is the annular region where the pressure foot contacts the workpiece.

[0135] In an alternative embodiment of the present invention, the number of the first regions and the second regions is multiple. The pressure foot device includes a pressure foot and a brush. The brush is arranged at the lower end of the pressure foot. The first region is the point to be formed, and the second region is the annular region formed by the brush contacting the workpiece. Among them, in a specific embodiment, the processing device is a routing machine. At this time, processing the workpiece means forming the workpiece. The point to be drilled refers to the point on the workpiece to be formed. Since the pressure foot device presses the workpiece through the brush under the pressure foot during processing, the brush directly contacts the workpiece at this time, so the second region is the annular region formed by the brush contacting the workpiece.

[0136] In an alternative embodiment of the present invention, the preset parameters include at least one of the workpiece thickness value, workpiece hardness value, workpiece elasticity value, and workpiece flatness value.

[0137] Among them, due to the differences in the workpiece thickness value, workpiece hardness value, workpiece elasticity value, and workpiece flatness value, the pressure that the pressure foot device needs to output during workpiece processing is also correspondingly different. By making the preset parameters include at least one of the workpiece thickness value, workpiece hardness value, workpiece elasticity value, and workpiece flatness value, the most suitable output pressure of the pressure foot device can be determined according to the different indicators of different workpieces, improving the processing accuracy.

[0138] Embodiment Two

[0139] Figure 2The flowchart of a pressure control method for a processing device provided in the second embodiment of the present invention. This embodiment is improved on the basis of the first embodiment. Optionally, before obtaining the preset parameters of the first area on the workpiece, it further includes: establishing a first mapping relationship between the preset parameters and the output pressure of the pressure foot device; the determining the output pressure of the pressure foot device according to the preset parameters includes: determining the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship. Based on this, as Figure 2 shown, the pressure control method of the processing device includes:

[0140] S210. Establish a first mapping relationship between the preset parameters and the output pressure of the pressure foot device.

[0141] Among them, the first mapping relationship reflects the corresponding relationship between the preset parameters and the output pressure of the pressure foot device, that is, different preset parameters will correspond to the output pressure of a specific pressure foot. This first mapping relationship can be obtained by testing workpieces with different preset parameters.

[0142] S220. Obtain the preset parameters of the first area on the workpiece.

[0143] S230. Determine the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship.

[0144] Among them, since the first mapping relationship reflects the corresponding relationship between the preset parameters and the output pressure of the pressure foot device, therefore, when the preset parameters are known, finding the output pressure of the pressure foot device corresponding to the working preset parameters in the first mapping relationship can determine the output pressure of the pressure foot device at this time.

[0145] S240. Based on the output pressure of the pressure foot device, adjust the pressure of the pressure foot device on the second area of the workpiece, where the second area on the workpiece surrounds the first area.

[0146] In the above solution, by establishing a first mapping relationship between the preset parameters and the output pressure of the pressure foot device in advance, when the preset parameters are obtained, the output pressure of the pressure foot device can be conveniently and quickly determined according to the preset parameters and the first mapping relationship, and then the pressure of the pressure foot device on the second area of the workpiece is adjusted based on the output pressure of the pressure foot device. Therefore, the output pressure of the pressure foot device can be automatically and quickly determined according to the current preset parameters, and then the pressure of the pressure foot device on the workpiece can be adaptively adjusted. It solves the problem that the manual adjustment of the pressure of the pressure foot is not reliable enough, without the tediousness of manual debugging, and is more time-saving, labor-saving, simple to operate and has strong versatility.

[0147] In an optional embodiment of the present invention, the determining the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship includes:

[0148] Determine whether the preset parameter exists in the first mapping relationship.

[0149] If so, determine the output pressure of the pressure foot device based on the output pressure of the pressure foot device mapped in the first mapping relationship according to the working preset parameter.

[0150] If not, perform the step of obtaining the preset parameter.

[0151] Among them, the first mapping relationship stores the corresponding relationship between a variety of different preset parameters and the output pressure of the pressure foot device. Determining whether the preset parameter exists in the first mapping relationship means determining whether there is a preset parameter value in the preset parameters stored in the first mapping relationship that is the same as the preset parameter obtained this time. In theory, the preset parameters that may appear during processing should be covered in the first mapping relationship. However, in actual applications, due to detection errors and data anomalies caused by system failures, etc., the obtained preset parameters may not exist in the first mapping relationship. By determining whether the preset parameter exists in the first mapping relationship and obtaining the preset parameter again when it does not exist, the control of the output pressure of the pressure foot device can be finally realized, and the situation of improper adjustment of the output pressure of the pressure foot device caused by data anomalies can be reduced.

[0152] Embodiment III

[0153] Figure 3 The flowchart of a pressure control method for a processing device provided in Embodiment III of the present invention. This embodiment is improved on the basis of Embodiment II. Optionally, the pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder and is used to adjust the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot and is used to drive the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench. The establishment of the first mapping relationship between the preset parameter and the output pressure of the pressure foot device includes: establishing the first mapping relationship between the preset parameter and the air supply pressure; correspondingly, determining the output pressure of the pressure foot device according to the preset parameter and the first mapping relationship includes: determining the air supply pressure mapped to the working preset parameter according to the preset parameter and the first mapping relationship; correspondingly, adjusting the pressure of the pressure foot device on the second area of the workpiece based on the output pressure of the pressure foot device includes: adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder based on the air supply pressure to adjust the pressure applied by the pressure foot to the second area of the workpiece. Based on this, as Figure 3 shown, the pressure control method of this processing device includes:

[0154] S310. Establish the first mapping relationship between the preset parameter and the air supply pressure.

[0155] Among them, the pressing foot refers to the main part used to press the workpiece. The linkage lever of the air cylinder is connected to the pressing foot. The control of the air cylinder is to adjust the air supply pressure into the air cylinder through a pressure regulating valve. The air supply pressure is converted into the output pressure of the pressing foot through the linkage lever of the air cylinder, so as to realize the pressing of the workpiece during the processing. Therefore, when the air supply pressure supplied by the pressure regulating valve to the air cylinder changes, the pressure exerted by the pressing foot on the workpiece on the workbench also changes. Therefore, the pressure exerted by the pressing foot on the workpiece on the workbench can be adjusted by controlling the air supply pressure of the pressure regulating valve. Therefore, there is a corresponding relationship between the output pressure and the air supply pressure of the pressure foot device. Establishing the first mapping relationship between the preset parameters and the output pressure of the pressure foot device is to establish the corresponding relationship between the preset parameters and the air supply pressure to form the first mapping relationship.

[0156] S320. Obtain the preset parameters of the first area on the workpiece.

[0157] S330. Determine the air supply pressure mapped to the work preset parameters according to the preset parameters and the first mapping relationship.

[0158] Among them, since the first mapping relationship reflects the relationship between the preset parameters and the air supply pressure, therefore, when the preset parameters are known, the air supply pressure mapped to the preset parameters can be obtained through the first mapping relationship.

[0159] S340. Adjust the air supply pressure supplied by the pressure regulating valve to the air cylinder based on the air supply pressure to adjust the pressure exerted by the pressing foot on the second area of the workpiece, where the second area on the workpiece surrounds the first area.

[0160] Among them, since the air supply pressure is supplied from the pressure regulating valve to the air cylinder, and the air supply pressure mapped to the preset parameters is supplied to the air cylinder through the pressure regulating valve, the pressure exerted by the pressing foot on the workpiece on the workbench will be adjusted. The pressure exerted by the adjusted pressing foot on the workpiece on the workbench is more in line with the processing requirements of the preset parameters. Therefore, it can automatically adjust the pressure exerted by the pressing foot on the second area of the workpiece on the workbench according to the current preset parameters, solve the problem that the pressure exerted by the manual adjustment of the pressing foot on the workpiece on the workbench is not reliable enough, without the tediousness of manual debugging, and is more time-saving, labor-saving, simple to operate and has strong versatility.

[0161] In an optional embodiment of the present invention, the processing equipment further includes a tool. The establishment of the first mapping relationship between the preset parameters and the output pressure of the pressure foot device includes:

[0162] Obtain the preset parameters.

[0163] Adjust the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, control the tool to process the workpiece.

[0164] Determine whether the machining accuracy of the workpiece meets the preset accuracy requirements.

[0165] If so, record the first mapping relationship formed by the current pressure applied by the pressure foot device to the second area of the workpiece and the preset parameters.

[0166] If not, perform the steps of adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, controlling the tool to process the workpiece.

[0167] Among them, the acquisition of the preset parameters can be manually input by the tester or detected by the detection module, and no specific limitation is made here.

[0168] Adjusting the pressure applied by the pressure foot device to the workpiece on the workbench can be manually adjusted by the tester or adjusted by a preset adjustment rule. For example, the adjustment rule is to change the pressure from large to small within a certain range. The tool refers to the component for processing the workpiece. According to the type of processing equipment, the types of tools will be different. When processing the workpiece, the pressure foot device presses the workpiece on the workbench, and then the tool processes the workpiece.

[0169] The machining accuracy refers to the accuracy of the machined area after the tool processes the workpiece under the pressure applied by the current pressure foot device to the workpiece on the workbench. The preset accuracy requirement refers to the requirement that the accuracy of the processed area should meet in advance. For example, when the processing equipment is a drilling equipment, the machining accuracy is the accuracy of the drilled hole. The preset accuracy requirement means that the deviation between the actual drilling depth and the preset drilling depth is less than 10%, and the machining accuracy is the deviation between the actual drilling depth and the preset drilling depth.

[0170] Among them, when the machining accuracy of the workpiece meets the preset accuracy requirements, it means that the pressure applied by the pressure foot device to the second area of the workpiece at this time matches the current preset parameters. For the current preset parameters, using this pressure can make the machining accuracy meet the requirements. At this time, record both the current pressure applied by the pressure foot device to the second area of the workpiece and the preset parameters, and a first mapping relationship can be formed. When recording, it can be recorded in different ways. In a specific embodiment, a table is used to record the current pressure applied by the pressure foot device to the second area of the workpiece and the preset parameters, and the user can determine the pressure of the pressure foot device on the workpiece corresponding to different preset parameters according to the table.

[0171] In an alternative embodiment of the present invention, the pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder for adjusting the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot for driving the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench.

[0172] Adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and controlling the tool to process the workpiece based on the pressure applied by the adjusted pressure foot device to the second area of the workpiece includes:

[0173] Adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece.

[0174] Correspondingly, recording the pressure applied by the current pressure foot device to the second area of the workpiece and the preset parameters to form a first mapping relationship includes:

[0175] Recording the air supply pressure supplied by the current pressure regulating valve to the cylinder and the preset parameters to form a first mapping relationship.

[0176] Correspondingly, performing the steps of adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece includes:

[0177] Performing the steps of adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece.

[0178] Wherein, the pressure foot refers to the main part for pressing the workpiece. The linkage lever of the cylinder is connected to the pressure foot. The control of the cylinder is to adjust the air supply pressure entering the cylinder through the pressure regulating valve. The air supply pressure is converted into the output pressure of the pressure foot through the linkage lever of the cylinder, so as to realize the pressing of the workpiece during the processing. Therefore, when the air supply pressure supplied by the pressure regulating valve to the cylinder changes, the pressure applied by the pressure foot to the second area of the workpiece on the workbench also changes. Therefore, the pressure applied by the pressure foot to the second area of the workpiece on the workbench can be adjusted by controlling the air supply pressure of the pressure regulating valve. Therefore, there is a corresponding relationship between the preset parameters and the air supply pressure.

[0179] Since there is a corresponding relationship between the preset parameters and the air supply pressure, and the pressure applied by the pressure foot device to the second area of the workpiece on the workbench is adjusted by adjusting the air supply pressure of the pressure regulating valve, a first mapping relationship is formed by recording the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters, which is convenient for adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder according to the preset parameters, so that the processing accuracy meets the requirements.

[0180] Recording can be carried out in different ways. In a specific embodiment, a table is used to record the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters. Users can determine the air supply pressure supplied by the pressure regulating valve corresponding to different preset parameters according to the table. For example, in a specific embodiment, the preset parameter is the workpiece thickness value, the pressure regulating valve is an electro-pneumatic proportional valve, and the air supply pressure is the proportional valve air pressure. The relationship between them is shown in Table 1. According to this table, when the preset parameter is known, the proportional valve air pressure corresponding to the preset parameter can be determined.

[0181] Table 1: Relationship table of proportional valve air pressure and preset parameters

[0182]

[0183]

[0184] In an alternative embodiment of the present invention, the first mapping relationship includes a first linear relationship curve. The process of recording the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters to form the first mapping relationship includes:

[0185] Record the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters and associate the two.

[0186] Based on multiple groups of recorded associated air supply pressures and preset parameters, perform linear fitting to obtain the first linear relationship curve.

[0187] Correspondingly, determining the output pressure of the pressure foot device according to the preset parameters of the first area includes:

[0188] Based on the point of intersection of the first linear relationship curve with the preset parameters of the first area, determine the air supply pressure of the pressure regulating valve.

[0189] Among them, if there is a linear function relationship between two variables, it is said that there is a linear relationship between them. The first linear relationship curve refers to the curve reflecting the correlation between the air supply pressure and the preset parameter. Since there is a certain linear relationship between the air supply pressure and the preset parameter, the air supply pressure corresponding to different preset parameters will be different. After recording multiple sets of related air supply pressures and preset parameters, the first linear relationship curve can be obtained through linear fitting. Since the first linear relationship curve refers to the curve reflecting the correlation between the air supply pressure and the preset parameter, the abscissa and ordinate of the points on the first linear relationship curve will respectively correspond to the air supply pressure and the preset parameter. Therefore, the air supply pressure of the pressure regulating valve corresponding to the preset parameter can be known according to the coordinates of the point on the first linear relationship curve that intersects with the preset parameter in the first region.

[0190] In an alternative embodiment of the present invention, the first linear relationship curve includes an inflection point.

[0191] Determining the air supply pressure of the pressure regulating valve based on the point on the first linear relationship curve that intersects with the preset parameter in the first region includes:

[0192] Determine whether the preset parameter is greater than the preset parameter corresponding to the inflection point.

[0193] If so, determine the air supply pressure of the pressure regulating valve based on the air supply pressure corresponding to the inflection point.

[0194] If not, determine the air supply pressure of the pressure regulating valve based on the point on the first linear relationship curve that intersects with the preset parameter in the first region.

[0195] Among them, the pressure regulating valve usually has an air supply pressure range, and the pressure exerted by the pressure foot on the workpiece on the workbench is limited by the pressure threshold of the air supply pressure of the pressure regulating valve. When the preset parameter continuously rises, the air supply pressure of the pressure regulating valve cannot rise infinitely and can only reach the pressure threshold. The pressure threshold refers to the maximum value that the air supply pressure can reach. Therefore, there will be an inflection point on the first linear relationship curve, and the inflection point reflects the maximum value of the air supply pressure, that is, when the preset parameter reaches the preset parameter corresponding to the inflection point, even if the preset parameter continues to increase, the air supply pressure will not continue to rise. Therefore, determine whether the preset parameter is greater than the preset parameter corresponding to the inflection point. When the preset parameter is greater than the preset parameter corresponding to the inflection point, determine the air supply pressure of the pressure regulating valve based on the air supply pressure corresponding to the inflection point, which saves testing time. In a specific embodiment, the preset parameter is the workpiece thickness value, the pressure regulating valve is an electro-pneumatic proportional valve, and the air supply pressure is the proportional valve air pressure. The relationship between it and the preset parameter is as Figure 4 shown. It can be seen that the relationship between the proportional valve air pressure and the thickness is not a linear proportional relationship, there is an inflection point, that is, the proportional valve air pressure cannot increase infinitely with the increase of the thickness, there is a pressure threshold, and in this embodiment, the pressure threshold is 0.5 Mpa.

[0196] Embodiment 4

[0197] Figure 5 The figure is a flowchart of a pressure control method for a processing device provided in Embodiment 4 of the present invention. This embodiment is improved on the basis of Embodiment 3. Optionally, the pressure control method of the processing device further includes: establishing a second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure; correspondingly, adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder based on the air supply pressure to adjust the pressure applied by the presser foot to the second area of the workpiece, including: determining the input voltage of the pressure regulating valve mapped to the air supply pressure based on the air supply pressure and the second mapping relationship; inputting the input voltage of the pressure regulating valve to the pressure regulating valve to adjust the air supply pressure supplied by the pressure regulating valve to the cylinder, so as to adjust the pressure applied by the presser foot to the second area of the workpiece. Based on this, as Figure 5 shown, the pressure control method of the processing device includes:

[0198] S410. Establish a first mapping relationship between the preset parameters and the air supply pressure.

[0199] S420. Establish a second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure.

[0200] Among them, the input voltage of the pressure regulating valve refers to the voltage value input to the pressure regulating valve. The air supply pressure of the pressure regulating valve is limited by the input voltage. When the input voltages are different, the air supply pressures are also different. Therefore, the air supply pressure can be controlled by controlling the input voltage of the pressure regulating valve. There is a mapping relationship between the two, and the second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure can be established in advance through testing, which is convenient for determining the input voltage of the pressure regulating valve corresponding to different air supply pressures according to the second mapping relationship. In addition, the air supply pressure of the pressure regulating valve has a specific range, and the corresponding input voltage of the pressure regulating valve also has a specific range. The input voltage value of the pressure regulating valve cannot increase infinitely. In a specific embodiment, the pressure regulating valve is an electro-pneumatic proportional valve. In fact, the input voltage of the pressure regulating valve is the input voltage of the proportional valve, and the air supply pressure is the air pressure of the proportional valve. As Figure 6 shown, the air pressure range of the proportional valve is 0.005 - 0.5 Mpa, and the corresponding input voltage range of the proportional valve is DC0 - 5V. It is also limited by the pressure value, and the input voltage value cannot increase infinitely and can only reach 5V ultimately.

[0201] S430. Obtain the preset parameters of the first area on the workpiece.

[0202] S440. Determine the air supply pressure mapped to the working preset parameters according to the preset parameters and the first mapping relationship.

[0203] S450. Determine the input voltage of the pressure regulating valve mapped to the air supply pressure based on the air supply pressure and the second mapping relationship.

[0204] Among them, since the second mapping relationship reflects the corresponding relationship between the air supply pressure and the input voltage of the pressure regulating valve, therefore, only by knowing the air supply pressure and through the second mapping relationship, it is possible to determine the input voltage of the pressure regulating valve mapped to the air supply pressure.

[0205] S460. Input the input voltage of the pressure regulating valve to adjust the air supply pressure supplied by the pressure regulating valve to the air cylinder, so as to adjust the pressure applied by the presser foot to the second area of the workpiece, wherein the second area on the workpiece surrounds the first area.

[0206] Among them, since the pressure applied by the presser foot to the workpiece on the workbench is limited by the air supply pressure, and the magnitude of the air supply pressure depends on the input voltage of the pressure regulating valve, therefore, only by inputting the input voltage of the pressure regulating valve to the pressure regulating valve, the air supply pressure supplied by the pressure regulating valve to the air cylinder will be adjusted, and further the pressure applied by the presser foot to the second area of the workpiece on the workbench will be adjusted.

[0207] In an alternative embodiment of the present invention, the establishment of the second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure includes:

[0208] Adjust the input voltage of the pressure regulating valve.

[0209] Obtain the air supply pressure supplied by the pressure regulating valve to the air cylinder based on the input voltage.

[0210] Record the input voltage and the air supply pressure to form a second mapping relationship.

[0211] Among them, the input voltage of the pressure regulating valve refers to the input voltage input to the pressure regulating valve. In a specific embodiment, the input voltage of the pressure regulating valve can be adjusted by directly adjusting an adjustable power supply that provides the input voltage to the pressure regulating valve.

[0212] When the pressure regulating valve has an input voltage, it will supply a specific air supply pressure to the air cylinder, and this air supply pressure can be obtained through detection. There are various detection methods, such as detecting the air supply pressure through a pressure gauge, which will not be specifically described here.

[0213] By recording the input voltage and the air supply pressure, the user can determine the air supply pressure corresponding to different input voltages, so as to form the corresponding relationship between the input voltage of the pressure regulating valve and the air supply pressure, and obtain the second mapping relationship. According to different usage requirements, in a specific embodiment, as shown in Table 2, it can be recorded in the form of a table. In this table, the pressure regulating valve is an electro-pneumatic proportional valve, the input voltage of the pressure regulating valve is the input voltage of the proportional valve, and the air supply pressure is the proportional valve air pressure.

[0214] Table 2: Corresponding Relationship Table between Input Voltage of Proportional Valve and Air Pressure of Proportional Valve

[0215]

[0216]

[0217] Example 5

[0218] Figure 7 The flowchart of a pressure control method for a processing device provided in Example 5 of the present invention. This example is applicable to the situation of PCB processing drilling or PCB forming. At this time, the workpiece is the PCB. When used for PCB processing drilling, the processing device can be a drilling device. When used for PCB forming, the processing device is a routing machine. This method can be executed by the control system of the processing device. The control system can be implemented in the form of hardware and / or software and can be configured in the processing device. The processing device includes a pressure foot device and a workbench. The pressure foot device is used to apply pressure to the workpiece on the workbench. The pressure foot device refers to the component used to press the workpiece, and the workpiece refers to the component to be drilled. The workpiece has a first area and a second area. The workbench refers to the platform for placing the workpiece for drilling. As Figure 7 shown, the pressure control method of this processing device includes:

[0219] S510. Obtain preset parameters.

[0220] Among them, the preset parameters refer to the preset parameters of the workpiece to be processed. The preset parameters can be manually input by the user or detected by setting some modules for detecting preset parameters. The specific method for obtaining the preset parameters is not specifically limited here.

[0221] S520. Determine the output pressure of the pressure foot device according to the preset parameters.

[0222] Among them, when the workpiece is processed, the pressure foot device will press the workpiece. The output pressure of the pressure foot device refers to the pressure that the pressure foot device should apply to the workpiece when pressing the workpiece. When the preset parameters are different, the corresponding output pressure of the pressure foot device will be different. For example, when the preset parameter is the workpiece thickness value and the workpiece is thinner, if the output pressure of the pressure foot device is too large, the workpiece is easily damaged. When the workpiece is thicker, if the output pressure of the pressure foot device is too small, the workpiece cannot be tightly pressed, and the workpiece may shift and shake during processing. Another example is when the preset parameter is the workpiece elasticity value. When the elasticity value of the workpiece is large, if the output pressure of the pressure foot device is small, it is difficult to tightly press the workpiece. When the elasticity value of the workpiece is large and the other parameter values of the workpiece are the same, the pressure foot device does not need to apply too much pressure to tightly press the workpiece. Therefore, it is more accurate to determine the output pressure of the pressure foot device during this processing according to the obtained preset parameters.

[0223] S530. Adjust the pressure applied by the pressure foot device to the workpiece based on the output pressure of the pressure foot device.

[0224] Wherein, the output pressure of the pressure foot device refers to the pressure that the pressure foot device should apply to the workpiece under the current preset parameters. By adjusting the pressure applied by the pressure foot device to the workpiece based on the output pressure of the pressure foot device, the pressure applied by the pressure foot device to the workpiece can be adjusted to adapt to the preset parameters of the workpiece being processed currently.

[0225] In the above solution, by obtaining the preset parameters, then determining the output pressure of the pressure foot device according to the preset parameters, and finally adjusting the pressure applied by the pressure foot device to the workpiece based on the output pressure of the pressure foot device. It can automatically adjust the pressure applied by the pressure foot device to the workpiece according to the current preset parameters, solve the problem that the manual adjustment of the pressure of the pressure foot device is not reliable enough, without the tediousness of manual debugging, and is more time-saving, labor-saving, simple to operate and has strong versatility.

[0226] Embodiment Six

[0227] Figure 8 It is a schematic structural diagram when a processing device processes a workpiece 7 according to Embodiment Six of the present invention. As Figure 8 shown, the processing device includes a tool 1, a pressure foot device and a control system.

[0228] The tool 1 is used to process the first area of the workpiece 7.

[0229] The pressure foot device is used to apply pressure to the second area of the workpiece 7, and the second area surrounds the first area.

[0230] The control system is electrically connected to the pressure foot device, and is used to obtain the preset parameters of the first area on the workpiece 7, determine the output pressure of the pressure foot device according to the preset parameters, and adjust the pressure applied by the pressure foot device to the second area of the workpiece 7 based on the output pressure of the pressure foot device.

[0231] Wherein, the tool 1 is the tool for processing the workpiece 7. In a specific embodiment, the tool 1 includes a drill bit. The pressure foot device refers to the component for pressing the workpiece 7, and the control system refers to the management system with its own objectives and functions. Specifically, the control system may include a microprocessor.

[0232] In the above solution, the control system obtains the preset parameters of the first area on the workpiece 7, determines the output pressure of the pressure foot device according to the preset parameters, and based on the output pressure of the pressure foot device, adjusts the pressure applied by the pressure foot device to the second area of the workpiece 7. It can automatically adjust the pressure applied by the pressure foot device to the second area of the workpiece 7 according to the preset parameters of the current first area. This solves the problem that the pressure applied by manually adjusting the pressure foot to the second area of the workpiece 7 is not reliable enough, eliminates the tediousness of manual debugging, is more time-saving and labor-saving, has simple operation and strong versatility.

[0233] In an alternative embodiment of the present invention, the tool 1 includes one of a drill bit and a milling cutter. That is, according to the type of processing equipment, the type of the tool 1 will also be different. Figure 8 and Figure 9 taking the processing equipment as a drilling equipment as an example. Figure 10 taking the processing equipment as a milling machine as an example.

[0234] When the processing equipment is a drilling equipment, as Figure 8 shown, the pressure foot device includes a pressure foot 2, the tool 1 is a drill bit, the first area is the point to be drilled, and the second area is the annular area formed by the pressure foot 2 contacting the workpiece 7. The pressure foot 2 refers to the main part for pressing the second area of the workpiece 7. According to the type of processing equipment, the pressure foot 2 and the tool 1 have various different positional structures. In a specific embodiment, the pressure foot 2 is provided with a channel for the tool 1 to pass through, and the tool 1 passes through the channel. When the tool 1 processes the first area of the workpiece 7, the pressure foot 2 will press the second area surrounding the first area of the tool 1. In another specific embodiment, as Figure 9 shown, the pressure foot 2 includes a first half-foot 21 and a second half-foot 22 which are symmetrically arranged, and there is a gap for the tool 1 to pass through between the first half-foot 21 and the second half-foot 22. The tool 1 passes through the gap. Therefore, when the tool 1 processes the first area of the workpiece 7, the first half-foot 21 and the second half-foot 22 will press the second area surrounding the first area of the tool 1.

[0235] When the processing equipment is a milling machine, as Figure 10As shown, the pressure foot device includes a pressure foot 2 and a brush 10. The tool 1 is a routing tool. The brush 10 is arranged at the lower end of the pressure foot 2. The first area is the point to be formed, and the second area is the annular area formed by the brush 10 contacting the workpiece 7. In a specific embodiment, the pressure foot 2 includes a symmetrically arranged first half-foot 21 and a second half-foot 22. There is a gap between the first half-foot 21 and the second half-foot 22 for the tool 1 to pass through. The tool 1 passes through the gap. Therefore, when the tool 1 processes the first area of the workpiece 7, the first half-foot 21 and the second half-foot 22 will press the second area surrounding the first area of the tool 1. According to different types of processing equipment, the pressure foot 2 and the tool 1 have various different positional structures. Figure 10 Only examples are given here without specific limitations.

[0236] In an alternative embodiment of the present invention, as Figure 9 or Figure 10 shown, the pressure foot device further includes a cylinder 9 and a pressure regulating valve 3. The control system is electrically connected to the pressure regulating valve 3 and is used to output a pressure control signal based on the output pressure of the pressure foot device to control the pressure regulating valve 3 to adjust the pressure applied by the pressure foot 2 to the second area of the workpiece 7.

[0237] The pressure regulating valve 3 is connected to the cylinder 9 and is used to adjust the air supply pressure of the cylinder 9 based on the pressure control signal.

[0238] The cylinder 9 is connected to the pressure foot 2 and is used to drive the pressure foot 2 to move based on the air supply pressure to adjust the pressure of the pressure foot 2 on the second area of the workpiece 7.

[0239] Among them, the pressure control signal refers to the electrical signal used to control the pressure regulating valve 3. The linkage lever of the cylinder 9 is connected to the pressure foot 2. The control of the cylinder 9 is to adjust the air supply pressure into the cylinder 9 through the pressure regulating valve 3. The air supply pressure is converted into the output pressure of the pressure foot 2 through the linkage lever of the cylinder 9, so as to realize the pressing of the second area of the workpiece 7 during the processing. Therefore, when the pressure regulating valve 3 changes, the pressure of the pressure foot 2 also changes accordingly. Therefore, the control system can adjust the pressure of the pressure foot 2 by controlling the pressure regulating valve 3. When the output pressure of the pressure foot device is different, the control system outputs a corresponding pressure control signal, and thus the pressure regulating valve 3 can adjust the pressure of the pressure foot 2 on the workpiece 7.

[0240] Optionally, when the pressure foot 2 includes a first half-foot 21 and a second half-foot 22, the number of cylinders 9 can be two. One cylinder 9 is connected to the first half-foot 21, and the other cylinder 9 is connected to the second half-foot 22.

[0241] On the basis of the above embodiment, the pressure regulating valve 3 includes an electro-hydraulic proportional valve, and the control system includes a control module 4 and a processing module 5.

[0242] The control module 4 is configured to output a pressure control signal in digital quantity based on the output pressure of the pressure foot device.

[0243] The input end of the processing module 5 is electrically connected to the control module 4, and the output end of the processing module 5 is electrically connected to the electro-hydraulic proportional valve. The processing module 5 is configured to convert the pressure control signal in digital quantity into an analog quantity, and control the electro-hydraulic proportional valve based on the pressure control signal in analog quantity to adjust the pressure applied by the pressure foot 2 to the second area.

[0244] Among them, the electro-hydraulic proportional valve has an analog input, and the control module 4 outputs a digital quantity. The digital quantity is converted into an analog quantity through the processing module 5 to achieve the control of the electro-hydraulic proportional valve. As Figure 11 shown, when the input signal of the electro-hydraulic proportional valve increases, the control circuit opens the air supply solenoid valve and closes the exhaust solenoid valve. The supply pressure acts on the diaphragm of the pilot chamber, causing the air supply valve linked to the diaphragm to open, and the supply pressure is converted into the output pressure; when the input signal decreases, the control circuit opens the exhaust solenoid valve and closes the air supply solenoid valve. The discharge pressure acts on the diaphragm of the pilot chamber, causing the exhaust valve linked to the diaphragm to open, reducing the output pressure. The output pressure is finally fed back to the control circuit through the pressure sensor, thereby achieving the proportional control of the output pressure and the input signal. Therefore, the control module 4 can relatively accurately control the pressure applied by the pressure foot 2 to the second area by controlling the electro-hydraulic proportional valve.

[0245] In an alternative embodiment of the present invention, the pressure control signal includes the input voltage of the pressure regulating valve 3, and the control system is configured to output the input voltage of the pressure regulating valve 3 to the pressure regulating valve 3 based on the output pressure of the pressure foot device to adjust the pressure applied by the pressure foot 2 to the second area of the workpiece 7.

[0246] Among them, when the input voltage of the pressure regulating valve 3 is different, the air supply pressure value supplied by the pressure regulating valve 3 to the air cylinder 9 will also be correspondingly different. Therefore, the control module 4 can output the corresponding input voltage of the pressure regulating valve 3 to the pressure regulating valve 3 based on the output pressure of the pressure foot device, and further can adjust the pressure of the pressure foot 2 on the workpiece 7.

[0247] In an alternative embodiment of the present invention, as Figure 9 or Figure 10 shown, the processing equipment further includes a detection module 6, and the detection module 6 is configured to detect the preset parameters of the workpiece 7 to obtain the preset parameters; the control system is electrically connected to the detection module 6 and is configured to obtain the preset parameters.

[0248] Among them, the detection module 6 refers to a module that can detect the preset parameters. By setting the detection module 6, the preset parameters of the workpiece 7 can be automatically detected by the detection module 6 during the processing.

[0249] Based on the above embodiments, the processing device further includes a position positioning mechanism, and the position positioning mechanism includes at least one of a Z-axis grating scale and a Z-axis magnetic scale. The detection module 6 is configured to read the position information of the position positioning mechanism when the tool 1 contacts the conductive medium of the workpiece 7 to determine the preset parameters of the workpiece 7.

[0250] Among them, a grating scale, also known as a grating scale displacement sensor (grating scale sensor), is a measurement feedback device that works based on the optical principle of a grating. The Z-axis grating scale refers to a grating scale vertically arranged for measuring the Z-axis position. By reading the position information of the Z-axis grating scale, the detection module 6 can conveniently determine the preset parameters. A magnetic scale refers to a method similar to the recording technology. The process of recording equally spaced magnetic waves on a magnetic scale (or disk) by a recording head is called magnetic recording. The magnetic scale with the magnetic waves already recorded is called a magnetic scale. The distance between adjacent magnetic waves on the magnetic scale is called the wavelength of the magnetic scale, also known as the pitch (grating pitch) of the magnetic scale. The Z-axis magnetic scale refers to a magnetic scale arranged along the vertical direction for measuring the Z-axis position. In a specific embodiment, the preset parameters detected by the Z-axis grating scale and the Z-axis magnetic scale are the thickness value of the workpiece 7.

[0251] In a specific embodiment, the workpiece 7 to be processed is a bakelite board. At this time, the processing device further includes a conductive medium, and the conductive medium is used to be arranged on the surface of the bakelite board. The conductive medium can be an aluminum sheet. Thus, the detection module 6 can contact the conductive medium on the surface of the bakelite board to obtain the preset parameters of the workpiece 7.

[0252] When the workpiece 7 to be processed is a circuit board with a conductive layer, the conductive medium at this time is the conductive layer, and the detection module 6 can directly contact the conductive layer on the surface of the circuit board to obtain the preset parameters of the first region. For a workpiece 7 without a conductive layer, a conductive medium, such as an aluminum sheet, can be added to the surface of the workpiece 7. At this time, the first region is on the conductive medium, and then the detection module 6 can contact the conductive medium on the surface of the workpiece 7 to obtain the preset parameters. Therefore, when processing different positions on the surface of the workpiece 7, different conductive media corresponding to different first regions will be contacted. At this time, the detection module 6 will send a detection signal. Thus, the position information of the position positioning mechanism read when the detection signal is obtained reflects the preset parameters of this position. Therefore, the preset parameters of the first region detected by the detection module 6 can be obtained in real time.

[0253] It should be understood that various forms of the processes shown above can be used, reordering, adding, or deleting steps. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0254] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pressure control method for a processing device, where the processing device is used to process a circuit board, characterized in that, The processing equipment includes a pressure foot device and a workbench. The pressure foot device is used to apply pressure to the workpiece on the workbench. The workpiece has a first area and a second area. The pressure control method includes: Obtain the preset parameters of the first area on the workpiece; Determine the output pressure of the pressure foot device according to the preset parameters; Based on the output pressure of the pressure foot device, adjust the pressure of the pressure foot device on the second area of the workpiece, where the second area on the workpiece surrounds the first area; The processing equipment further includes a detection module and a spindle. The detection module is used to detect preset parameters, and the spindle is used to drive the detection module to move; before obtaining the preset parameters of the first area on the workpiece, it further includes: Drive the detection module to move to each first area through the spindle; The detection module respectively obtains the preset parameters of each first area; Record the preset parameters of each first area to form a preset parameter library.

2. The pressure control method of the processing equipment according to claim 1, wherein The obtaining of the preset parameters of the first area on the workpiece includes: Obtain the current first area where the spindle is located on the workpiece; Determine the preset parameters of the current first area based on the preset parameter library; Correspondingly, determining the output pressure of the pressure foot device according to the preset parameters includes: Determine the output pressure of the pressure foot device according to the preset parameters of the current first area.

3. The pressure control method of the processing equipment according to any one of claims 1 to 2, characterized in that Before obtaining the preset parameters of the first area on the workpiece, it further includes: Establish a first mapping relationship between the preset parameters and the output pressure of the pressure foot device; The determining of the output pressure of the pressure foot device according to the preset parameters includes: Determine the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship.

4. The pressure control method of the processing equipment according to claim 3, characterized in that, The pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder and is used to adjust the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot and is used to drive the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench; The establishing of the first mapping relationship between the preset parameters and the output pressure of the pressure foot device includes: Establish a first mapping relationship between the preset parameters and the air supply pressure; Correspondingly, the determining of the output pressure of the pressure foot device according to the preset parameters and the first mapping relationship includes: Determine the air supply pressure mapped to the work preset parameters according to the preset parameters and the first mapping relationship; Correspondingly, the adjusting of the pressure of the pressure foot device on the second area of the workpiece based on the output pressure of the pressure foot device includes: Adjust the air supply pressure supplied by the pressure regulating valve to the cylinder based on the air supply pressure to adjust the pressure applied by the pressure foot to the second area of the workpiece.

5. The pressure control method of the processing equipment according to claim 3, characterized in that The processing equipment further includes a tool. The establishing of the first mapping relationship between the preset parameters and the output pressure of the pressure foot device includes: Obtain the preset parameters; Adjust the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, control the tool to process the workpiece; Determine whether the machining accuracy of the workpiece meets the preset accuracy requirements; If so, record the first mapping relationship formed by the pressure applied by the current pressure foot device to the second area of the workpiece and the preset parameters; If not, perform the steps of adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, controlling the tool to process the workpiece.

6. The pressure control method of the processing equipment according to claim 5, characterized in that, The pressure foot device includes a pressure foot, a cylinder, and a pressure regulating valve; the pressure regulating valve is connected to the cylinder and is used to adjust the air supply pressure supplied to the cylinder; the cylinder is connected to the pressure foot and is used to drive the pressure foot to move based on the air supply pressure to adjust the pressure applied by the pressure foot to the workpiece on the workbench; The steps of adjusting the pressure applied by the pressure foot device to the second area of the workpiece, and based on the adjusted pressure applied by the pressure foot device to the second area of the workpiece, controlling the tool to process the workpiece include: Adjust the air supply pressure supplied by the pressure regulating valve to the cylinder, drive the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and control the tool to process the workpiece; Correspondingly, recording the first mapping relationship formed by the pressure applied by the current pressure foot device to the second area of the workpiece and the preset parameters includes: Recording the first mapping relationship formed by the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters; Correspondingly, the steps of performing the adjustment of the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece include: Perform the steps of adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder, driving the pressure foot to press on the second area of the workpiece based on the adjusted air supply pressure of the cylinder, and controlling the tool to process the workpiece.

7. The pressure control method of the processing equipment according to claim 6, characterized in that The first mapping relationship includes a first linear relationship curve. The recording of the first mapping relationship formed by the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters includes: Recording the current air supply pressure supplied by the pressure regulating valve to the cylinder and the preset parameters and associating the two; Performing linear fitting based on the recorded multiple sets of associated air supply pressures and preset parameters to obtain a first linear relationship curve; Correspondingly, determining the output pressure of the pressure foot device according to the preset parameters of the first area includes: Determining the air supply pressure of the pressure regulating valve based on the point of intersection of the first linear relationship curve and the preset parameters of the first area.

8. The pressure control method of the processing equipment according to claim 7, characterized in that The first linear relationship curve includes an inflection point; The determining of the air supply pressure of the pressure regulating valve based on the point of intersection of the first linear relationship curve and the preset parameters of the first area includes: Determining whether the preset parameter is greater than the preset parameter corresponding to the inflection point; If so, determining the air supply pressure of the pressure regulating valve based on the air supply pressure corresponding to the inflection point; If not, determining the air supply pressure of the pressure regulating valve based on the point of intersection of the first linear relationship curve and the preset parameters of the first area.

9. The pressure control method of the processing equipment according to claim 4, characterized in that The pressure control method of the processing equipment further includes: Establishing a second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure; Correspondingly, adjusting the air supply pressure supplied by the pressure regulating valve to the cylinder based on the air supply pressure to adjust the pressure applied by the pressure foot to the second area of the workpiece includes: Determining the input voltage of the pressure regulating valve mapped to the air supply pressure based on the air supply pressure and the second mapping relationship; Inputting the input voltage of the pressure regulating valve to the pressure regulating valve to adjust the air supply pressure supplied by the pressure regulating valve to the cylinder, so as to adjust the pressure applied by the pressure foot to the second area of the workpiece.

10. The pressure control method of the processing equipment according to claim 9, characterized in that, Establishing the second mapping relationship between the input voltage of the pressure regulating valve and the air supply pressure includes: Adjusting the input voltage of the pressure regulating valve; Obtaining the air supply pressure supplied by the pressure regulating valve to the cylinder based on the input voltage; Recording the input voltage and the air supply pressure to form the second mapping relationship.

11. The pressure control method according to any one of claims 1 to 2, characterized in that, The number of the first area and the second area is multiple. The pressure foot device includes a pressure foot. The first area is the point to be drilled, and the second area is the annular area formed by the pressure foot contacting the workpiece.

12. The pressure control method according to any one of claims 1 to 2, characterized in that, The number of the first area and the second area is multiple. The pressure foot device includes a pressure foot and a brush. The brush is arranged at the lower end of the pressure foot. The first area is the point to be formed, and the second area is the annular area formed by the brush contacting the workpiece.

13. The pressure control method according to any one of claims 1 to 2, characterized in that, The preset parameters include at least one of a workpiece thickness value, a workpiece hardness value, a workpiece elasticity value, and a workpiece flatness value.

14. A pressure control method for a processing device, the processing device being used for processing a circuit board, the processing device including a pressure foot device and a workbench, the pressure foot device being used for applying pressure to a workpiece on the workbench, characterized in that, The pressure control method includes: Obtaining preset parameters; Determining the output pressure of the pressure foot device according to the preset parameters; Adjusting the pressure of the pressure foot device on the workpiece based on the output pressure of the pressure foot device; The processing equipment further includes a detection module and a main shaft. The detection module is used to detect preset parameters, and the main shaft is used to drive the detection module to move; before obtaining the preset parameters, it further includes: Driving the detection module to move to the workpiece through the main shaft; The detection module obtains the preset parameters of the workpiece; Recording the preset parameters of the workpiece to form a preset parameter library.

15. A processing device, characterized in that, Including a tool (1), a pressure foot device, and a control system; The tool (1) is used for processing the first area of the workpiece (7); The pressure foot device is used for applying pressure to the second area of the workpiece (7), and the second area surrounds the first area; The control system is electrically connected to the pressure foot device, and is used to obtain the preset parameters of the first area on the workpiece, and determine the output pressure of the pressure foot device according to the preset parameters. Based on the output pressure of the pressure foot device, adjust the pressure applied by the pressure foot device to the second area of the workpiece (7); It further includes a detection module. The detection module is used to detect the preset parameters of the workpiece to obtain preset parameters. The control system is electrically connected to the detection module and is used to obtain the preset parameters; it further includes a main shaft, and the main shaft is used to drive the detection module to move; Before obtaining the preset parameters of the first area on the workpiece, it further includes: Driving the detection module to move to each first area through the main shaft; The detection module respectively obtains the preset parameters of each first area; Recording the preset parameters of each first area to form a preset parameter library.

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