PCB processing equipment and PCB processing system

Abstract

The utility model discloses a PCB processing device and a PCB processing system, and relates to the field of PCB processing equipment, and the PCB processing device comprises an air floatation vibration main shaft; the air flotation vibration main shaft drives the rotating machining tool to vibrate in the first direction at the set amplitude and frequency in the machining process, so that periodic contact and separation are formed between the machining tool and the PCB. In the embodiment of the invention, the air flotation vibration main shaft is arranged in the PCB processing equipment, and the rotating processing cutter is driven to vibrate along the first direction at the set amplitude and frequency, so that periodic contact and separation are formed between the processing cutter and the PCB, and the offset generated when the processing cutter processes the PCB can be eliminated through the vibration effect; therefore, the machining precision is improved, the axial force and the torque borne by the machining tool are reduced, the friction factor between the machining tool and cuttings is reduced, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of PCB processing equipment, especially to a PCB processing equipment and PCB processing system. BACKGROUND

[0002] With the rapid development of science and technology, electronic equipment is evolving towards miniaturization, light weight and high integration, which puts forward more stringent requirements on the line density and aperture density of printed circuit boards (PCB). In the manufacturing process of PCB, the processing procedures of PCB usually include drilling, milling, milling and cutting and other key procedures, and the processing quality of these procedures directly affects the electrical performance, reliability and stability of PCB.

[0003] The existing PCB processing equipment has great processing difficulty when processing special PCBs such as high-density PCBs or high-thickness-diameter ratio PCBs, resulting in low processing precision and efficiency. Therefore, how to improve the processing precision and efficiency of the PCB processing equipment has become a problem to be solved. SUMMARY

[0004] Therefore, the utility model embodiment provides a kind of PCB processing equipment and PCB processing system to solve the technical problem of low processing precision and efficiency of the existing PCB processing equipment.

[0005] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0006] In a first aspect, a PCB processing equipment is provided, comprising an air-floating vibration spindle;

[0007] The air-floating vibration spindle drives the rotating processing tool to vibrate in the first direction with a set amplitude and frequency during processing, forming periodic contact and separation between the processing tool and the PCB.

[0008] Optionally, the air-floating vibration spindle comprises a spindle shell, a rotating shaft core assembly, a gas static pressure bearing assembly, a gas path structure and a motor assembly;

[0009] The rotating shaft core assembly is arranged in a containing cavity formed by the spindle shell;

[0010] The motor assembly and the gas static pressure bearing assembly are both arranged on the inner wall of the spindle shell, and the motor assembly drives the rotating shaft core assembly to rotate;

[0011] The gas path structure is arranged in the spindle shell, and the gas path structure is connected with the gas static pressure bearing assembly.

[0012] Optionally, the rotating shaft core assembly comprises a rotating shaft core and a thrust vibration disc;

[0013] The thrust vibration disc is arranged on the rotating shaft core;

[0014] The output end of the rotating shaft core is connected with the machining tool.

[0015] Optionally, the aerostatic bearing assembly comprises a thrust bearing assembly;

[0016] The thrust bearing assembly comprises an upper gas dynamic and static thrust bearing and a lower gas dynamic and static thrust bearing;

[0017] The upper gas dynamic and static thrust bearing and the lower gas dynamic and static thrust bearing are sleeved on the upper end of the rotating shaft core, and the thrust vibration disc is located between the upper gas dynamic and static thrust bearing and the lower gas dynamic and static thrust bearing.

[0018] Optionally, the aerostatic bearing assembly further comprises a radial bearing assembly;

[0019] The radial bearing assembly comprises an upper gas static radial bearing and a lower gas static radial bearing;

[0020] The upper gas static radial bearing and the lower gas static radial bearing are sleeved on the lower end of the rotating shaft core, and the upper gas static radial bearing abuts against the lower gas dynamic and static thrust bearing, and the lower gas static radial bearing abuts against the bottom of the main shaft housing, and the motor assembly is arranged between the upper gas static radial bearing and the lower gas static radial bearing.

[0021] Optionally, the gas path structure further comprises an air inlet, an air channel, a first annular air groove, a second annular air groove, a third annular air groove, and a fourth annular air groove;

[0022] The air inlet is arranged in the main shaft housing and located at the upper end of the main shaft housing;

[0023] The first annular air groove is connected with the upper gas dynamic and static thrust bearing, the second annular air groove is connected with the lower gas dynamic and static thrust bearing, the third annular air groove is connected with the upper gas static radial bearing, and the fourth annular air groove is connected with the lower gas static radial bearing;

[0024] The air inlet is connected with the air channel, and the air channel is respectively connected with the first annular air groove, the second annular air groove, the third annular air groove, and the fourth annular air groove.

[0025] Optionally, the annular air groove comprises one or more.

[0026] Optionally, the motor assembly comprises a stator and a rotor;

[0027] The stator is fixedly connected to the inner wall of the main shaft shell, and the rotor is fixedly connected to the rotating shaft core.

[0028] Optionally, the PCB processing equipment further comprises a first bed body, a first gantry system, and a first worktable located below the air floating vibration spindle.

[0029] A channel is formed between the first gantry system and the first bed body.

[0030] The air floating vibration spindle is arranged in the first gantry system, and the air floating vibration spindle is movable along the first direction.

[0031] The first worktable is movably arranged in the first bed body along a second direction and / or a third direction, and the first worktable is movable into or out of the channel.

[0032] The first direction, the second direction, and the third direction are perpendicular to each other.

[0033] Optionally, the PCB processing equipment further comprises a second bed body, a second gantry system, and a second worktable located below the air floating vibration spindle.

[0034] A channel is formed between the second gantry system and the second bed body.

[0035] The second gantry system and / or the second worktable are movably arranged in the second bed body along a second direction, and the second worktable is movable into or out of the channel.

[0036] The air floating vibration spindle is movably arranged in the second gantry system along a third direction, and the air floating vibration spindle is movable along the first direction.

[0037] The first direction, the second direction, and the third direction are perpendicular to each other.

[0038] In a second aspect, a PCB processing system is provided, which comprises at least one PCB processing equipment according to the first aspect.

[0039] In one scheme of the embodiment of the utility model, the gas floating vibration main shaft is arranged in the PCB processing equipment, and the rotating processing cutter is driven to vibrate in the first direction with the set amplitude and frequency, the pulse type discontinuous drilling process forms the periodic contact and separation between the processing cutter and the PCB, the deviation generated when the processing cutter processes the PCB can be eliminated through the vibration effect, thereby improving the processing precision, reducing the axial force and torque of the processing cutter, reducing the friction factor of the processing cutter and the cutting chip, improving the processing efficiency, and the gas floating vibration main shaft supported by the gas is higher in rotation precision, more accurate in positioning and smaller in friction force than the traditional vibration main shaft in the precision aspect, and the vibration and displacement deviation can be effectively reduced due to the reduction of the friction force; in the speed aspect, the rotation speed can be improved due to the reduction of the friction force, the traditional limitation can be broken through, and the processing precision and efficiency are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the description of the embodiment of the utility model will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings for the ordinary skilled in the art without the creative labor.

[0041] Figure 1 is a schematic view of the PCB processing equipment in one embodiment of the utility model;

[0042] Figure 2 is another schematic view of the PCB processing equipment in one embodiment of the utility model;

[0043] Figure 3 is a partial schematic view of the PCB processing equipment in one embodiment of the utility model;

[0044] Figure 4 is a schematic view of the gas floating vibration main shaft in one embodiment of the utility model.

[0045] Among them, the reference signs are as follows:

[0046] 1, gas floating vibration main shaft; 11, main shaft shell;

[0047] 12, rotating shaft core assembly; 121, rotating shaft core; 122, thrust vibration disc;

[0048] 13, gas static pressure bearing assembly; 131, thrust bearing assembly; 1311, upper gas dynamic and static pressure thrust bearing; 1312, lower gas dynamic and static pressure thrust bearing; 132, radial bearing assembly; 1321, upper gas static pressure radial bearing; 1322, lower gas static pressure radial bearing;

[0049] 141, air inlet; 142, air channel; 143, first annular air groove; 144, second annular air groove; 145, third annular air groove; 146, fourth annular air groove;

[0050] 15, motor assembly; 151, stator; 152, rotor;

[0051] 2, workbench;

[0052] 3, beam base; 31, first base; 32, second base; 4, beam; 5, bed;

[0053] 6, first one motion assembly; 7, first two motion assembly; 8, first three motion assembly;

[0054] 6', second one motion assembly; 7', second two motion assembly; 8', second three motion assembly;

[0055] 9, machining tool; 10, PCB. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0057] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0058] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the connection between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0059] In a first aspect, the utility model discloses a PCB processing equipment, please refer to Figures 1 to 4 The PCB processing equipment comprises a gas floating vibration main shaft 1, and the gas floating vibration main shaft 1 drives the rotating processing cutter 9 to vibrate in the first direction with a set amplitude and frequency during the processing process, so that periodic contact and separation are formed between the processing cutter 9 and the PCB 10.

[0060] In some embodiments, by setting the gas floating vibration main shaft 1 in the PCB processing equipment, and driving the rotating processing cutter 9 to vibrate in the first direction with a set amplitude and frequency during the processing process, the pulse type non-continuous drilling process makes the deviation generated when the processing cutter 9 processes the PCB 10 be eliminated by the vibration effect, thereby improving the processing precision, reducing the axial force and torque borne by the processing cutter 9, reducing the friction factor of the processing cutter 9 and the cutting chip, improving the processing efficiency, promoting the timely discharge of the cutting chip, reducing the tool wear, prolonging the service life, and the gas floating vibration main shaft supported by gas is higher in rotation precision, more accurate in positioning and smaller in friction force than the traditional vibration main shaft in terms of precision, and the vibration and displacement deviation can be effectively reduced due to the reduction of the friction force; in terms of speed, the rotation speed can be improved due to the reduction of the friction force, the traditional limitations can be broken through, and the processing precision and efficiency are further improved.

[0061] For example, in the vibration drilling process, when the rotating drill bit encounters deviation during drilling, the vibration effect makes the drill bit temporarily exit and reposition, thereby automatically eliminating the deviation, and thus the positioning precision of the drilling is improved. In addition, the good chip breaking performance generated by the vibration makes the chip discharge more smooth during the processing process, reduces the scraping of the chip on the hole surface, and the reciprocating pressing effect of the processing cutter 9 on the inner hole surface in the vibration processing further reduces the surface roughness of the PCB 10 and the surface quality of the hole wall, thereby improving the processing quality of the PCB 10. And due to the intermittent action between the processing cutter 9 and the PCB 10, the friction force is greatly reduced, so that the processing cutter 9 is always in a stable and normal wear stage, the cutting temperature is very low, the drill bit performance is stable, the wear speed is slow, and the service life of the processing cutter 9 is prolonged.

[0062] It should be understood that the above-mentioned periodic contact and separation are manifested as the number of times of contact and separation between the processing cutter 9 and the PCB 10 during the processing process, which is determined by the frequency of the gas floating vibration main shaft 1, for example, the cycle of contact and separation is completed once every 50µs (1s / 20000 times). The amplitude determines the pressure applied by the processing cutter 9 to the PCB 10 each time of contact, and the greater the amplitude, the stronger the contact force.

[0063] It should be noted that the amplitude of the air floating vibration spindle 1 can be 1-20 pm, and the frequency range can be 20-40 KHz. Preferably, the amplitude can be configured to be 5 pm, 10 pm, 15 pm or 18 pm, and the frequency can be configured to be 5 KHz, 10 KHz, 20 KHz, 30 KHz or 35 KHz. The rotating machining tool 9 can be a machining tool 9 with a rotating speed of 50,000-300,000 rpm. Preferably, the rotating speed of the machining tool 9 can be 100,000 rpm, 150,000 rpm, 200,000 rpm or 250,000 rpm. In addition, the air floating vibration spindle 1 in the present application can also be replaced by a liquid floating vibration spindle or a magnetic floating vibration spindle, which are not limited here. The liquid floating vibration spindle can be a spindle that uses the principle of liquid floating support to make the rotating shaft core arranged inside the electric spindle realize vibration and rotation in a preset direction in a liquid suspension state. The magnetic floating vibration spindle can be a spindle that uses the principle of magnetic floating support to make the rotating shaft core arranged inside the electric spindle realize vibration and rotation in a preset direction in a magnetic suspension state. Here, only as an example, and does not constitute a limitation to the present application.

[0064] In an embodiment, the air floating vibration electric spindle includes a rotating shaft core 121 arranged inside the electric spindle, which realizes vibration and rotation in a preset direction in a gas rotation floating state by using the principle of compressed gas dynamic and static pressure mixed bearing air floating support.

[0065] In an embodiment, as shown in Figure 4 The air floating vibration spindle 1 includes a spindle shell 11, a gas path structure, a rotating shaft core assembly 12, a gas static pressure bearing assembly 13 and a motor assembly 15. The rotating shaft core assembly 12 is arranged in a containing cavity formed by the spindle shell 11. The motor assembly 15 and the gas static pressure bearing assembly 13 are both arranged on the inner wall of the spindle shell 11, and the motor assembly 15 drives the rotating shaft core assembly 12 to rotate. The gas path structure is arranged in the spindle shell 11, and the gas path structure is connected with the gas static pressure bearing assembly 13, for guiding compressed gas to pass through the gas static pressure bearing assembly 13 and act on the rotating shaft core assembly 12, so that the rotating shaft core assembly 12 drives the machining tool 9 to vibrate in the first direction.

[0066] In some embodiments, the spindle shell 11 serves as a basic structure, and the containing cavity formed by the spindle shell 11 accommodates the rotating shaft core assembly 12. The motor assembly 15 and the gas static pressure bearing assembly 13 are both mounted on the inner wall of the spindle shell 11, and the motor assembly 15 provides rotating power for the rotating shaft core assembly 12. The gas path structure is arranged inside the spindle shell 11, which refers to the inside of the spindle shell 11 itself, and the specific arrangement is shown in Figure 3As shown, the compressed gas is guided to the aerostatic bearing assembly 13 through the gas channel structure, and then passes through the aerostatic bearing assembly 13 to form a gas film between the aerostatic bearing assembly 13 and the rotating shaft core assembly 12, which not only reduces the friction between the rotating shaft core assembly 12 and the main shaft shell 11, but also realizes precise vibration control of the rotating shaft core assembly 12 in the first direction by adjusting the pressure and flow of the compressed gas, meets the processing requirements of complex parts, and improves the overall processing technology level.

[0067] In an embodiment, the rotating shaft core assembly 12 includes a rotating shaft core 121 and a thrust vibration disc 122; the thrust vibration disc 122 is arranged on the rotating shaft core 121; and an output end of the rotating shaft core 121 is connected with the machining tool 9.

[0068] In some embodiments, the rotating shaft core 121 includes an input end and an output end, the input end is used to connect an automatic tool changing structure, the output end is used to connect a clamp, and the thrust vibration disc 122 is arranged on the input end face of the rotating shaft core 121 and located at the upper end of the main shaft shell 11. Through the connection of the clamp and the machining tool 9, different types and sizes of machining tools 9 can be adapted, and the versatility and flexibility of the entire PCB processing equipment are improved.

[0069] In an embodiment, the automatic tool changing structure includes a pneumatic cylinder device and a cooling system, and the input end of the rotating shaft core 121 is connected with the pneumatic cylinder device and the cooling system respectively, so that fast and accurate automatic tool changing operation can be realized during processing.

[0070] In an embodiment, the aerostatic bearing assembly 13 includes a thrust bearing assembly 131; the thrust bearing assembly 131 includes an upper aerodynamic and hydrodynamic thrust bearing 1311 and a lower aerodynamic and hydrodynamic thrust bearing 1312; the upper aerodynamic and hydrodynamic thrust bearing 1311 and the lower aerodynamic and hydrodynamic thrust bearing 1312 are sleeved on the upper end of the rotating shaft core 121, and the thrust vibration disc 122 is located between the upper aerodynamic and hydrodynamic thrust bearing 1311 and the lower aerodynamic and hydrodynamic thrust bearing 1312.

[0071] In some embodiments, the upper gas dynamic and static thrust bearing 1311 and the lower gas dynamic and static thrust bearing 1312 are mounted in a sleeved manner on the rotating shaft core 121, and the thrust vibration disc 122 is clamped between the two. Through this connection, the cooperation of the upper gas dynamic and static thrust bearing 1311, the lower gas dynamic and static thrust bearing 1312, and the thrust vibration disc 122 causes a layer of gas film to be formed on both sides of the thrust brake disc. Due to the different sizes of the air gap between the upper gas dynamic and static thrust bearing 1311 and the lower gas dynamic and static thrust bearing 1312, different pressures are generated on the upper and lower sides of the thrust vibration disc 122, forming a pressure difference, so that the thrust vibration disc 122 moves along the first direction to the low pressure side. After sliding a certain distance, due to the change of the thickness of the gas film on both sides of the thrust vibration disc 122, the original high and low pressure sides are exchanged, so that the thrust vibration disc 122 slides in the opposite direction of the first direction, thereby driving the rotating shaft core 121 to form reciprocating motion, and further driving the machining tool 9 to vibrate in the first direction. This pressure difference controls the periodic vibration of the thrust vibration disc 122 within a predetermined amplitude range, effectively reducing friction and heat generation during vibration, and improving the durability of the PCB processing equipment.

[0072] In an embodiment, the gas dynamic pressure bearing assembly 13 further comprises a radial bearing assembly 132; the radial bearing assembly 132 comprises an upper gas dynamic pressure radial bearing 1321 and a lower gas dynamic pressure radial bearing 1322; the upper gas dynamic pressure radial bearing 1321 and the lower gas dynamic pressure radial bearing 1322 are sleeved on the lower end of the rotating shaft core 121, and the upper gas dynamic pressure radial bearing 1321 abuts against the lower gas dynamic and static thrust bearing 1312, and the lower gas dynamic pressure radial bearing 1322 abuts against the bottom of the main shaft housing 11, and the motor assembly 15 is arranged between the upper gas dynamic pressure radial bearing 1321 and the lower gas dynamic pressure radial bearing 1322. The axis of the motor assembly 15, the upper gas dynamic pressure radial bearing 1321, and the lower gas dynamic pressure radial bearing 1322 is parallel to the axis of the rotating shaft core 121.

[0073] In some embodiments, one end of the upper gas static pressure radial bearing 1321 can be in abutment with the lower surface of the lower gas dynamic-static pressure thrust bearing 1312, one end of the lower gas static pressure radial bearing 1322 can be in abutment with the bottom of the spindle housing 11, and the motor assembly 15 can be arranged between the upper gas static pressure radial bearing 1321 and the lower gas static pressure radial bearing 1322, that is, the motor assembly 15 is arranged between the upper gas static pressure radial bearing 1321 and the other end of the lower gas static pressure radial bearing 1322. The thrust bearing assembly 131 is arranged above the radial bearing assembly 132. By this layout, the axial dimension of the rotating shaft core 121 can be shortened, so that the cantilever length and mass of the lower end of the rotating shaft core 121 are reduced, the overall size of the air floating vibration spindle 1 is effectively reduced, and the deformation of the lower end of the air floating vibration spindle 1 is reduced, so that the air floating vibration spindle 1 is more lightweight and compact. At the same time, the rotating shaft core 121 can be completely "embraced" by the upper gas static pressure radial bearing 1321 and the lower gas static pressure radial bearing 1322, so that the radial deflection of the front end of the air floating vibration spindle 1 is relatively small, and the rotating shaft core 121 can maintain a high-precision movement state during machining, which provides a guarantee for fine control and accurate machining.

[0074] In an embodiment, the gas path structure further comprises an air inlet 141, an air channel 142, a first annular air groove 143, a second annular air groove 144, a third annular air groove 145, and a fourth annular air groove 146; the air inlet 141 is arranged in the spindle housing 11 and located at the upper end of the spindle housing 11; the first annular air groove 143 is connected with the upper gas dynamic-static pressure thrust bearing 1311, the second annular air groove 144 is connected with the lower gas dynamic-static pressure thrust bearing 1312, the third annular air groove 145 is connected with the upper gas static pressure radial bearing 1321, and the fourth annular air groove 146 is connected with the lower gas static pressure radial bearing 1322; the air inlet 141 is connected with the air channel 142, and the air channel 142 is connected with the first annular air groove 143, the second annular air groove 144, the third annular air groove 145, and the fourth annular air groove 146, respectively.

[0075] In some embodiments, the air inlet 141 can be arranged in the spindle housing 11 and located at the upper end of the spindle housing 11 for communicating compressed air. Then, the compressed air enters the air channel 142 through the air inlet 141 first. The air channel 142 extends inside the spindle housing 11 and is connected with each annular air groove. The first annular air groove 143 is connected with the lower gas dynamic / static pressure thrust bearing 1312, and the second annular air groove 144 is connected with the lower gas dynamic / static pressure thrust bearing 1312 to guide the compressed air to both sides of the thrust vibration disc 122. The third annular air groove 145 is connected with the upper gas static pressure radial bearing 1321, and the fourth annular air groove 146 is connected with the lower gas static pressure radial bearing 1322 to provide radial support air, thereby ensuring the radial stability of the rotating shaft core 121 at the lower part. Each annular air groove can be arranged as one or more according to specific application requirements to adapt to different requirements, which is not limited here. It should be understood that the inside of the spindle housing 11 herein refers to the inside of the spindle housing 11 itself.

[0076] In the working process, the compressed air enters the air channel 142 through the air inlet 141 and is then distributed to each annular air groove. Specifically, after the compressed air enters the air channel 142 through the air inlet 141, it enters the first annular air groove 143 of the upper gas dynamic / static pressure thrust bearing 1311 and the second annular air groove 144 of the lower gas dynamic / static pressure thrust bearing 1312 in turn, so as to form a pressure difference on both sides of the thrust vibration disc 122, thereby driving the thrust vibration disc 122 to drive the rotating shaft core 121 to vibrate in the first direction; the compressed air enters the third annular air groove 145 of the upper gas static pressure radial bearing 1321 and the fourth annular air groove 146 of the lower gas static pressure radial bearing 1322 through the air channel 142, so as to generate an air film around the rotating shaft core 121, so that the rotating shaft core 121 remains in a suspended state.

[0077] In an embodiment, the motor assembly 15 includes a stator 151 and a rotor 152; the stator 151 is fixedly connected to the inner wall of the spindle housing 11, and the rotor 152 is fixedly connected to the rotating shaft core 121. Specifically, the stator 151 can be connected to the inner wall of the spindle housing 11 by welding or bolts, and the rotor 152 can be connected to the rotating shaft core 121 in an interference fit. The two cooperate to drive the rotating shaft core 121 to rotate. Through the above arrangement, the motor assembly 15 can directly transmit power to the rotating shaft core 121, reducing the intermediate transmission link, avoiding possible transmission loss, and improving the utilization efficiency of driving force.

[0078] In an embodiment, the processing type of the PCB 10 includes drilling, milling, or cutting, and / or the PCB 10 includes a high aspect ratio PCB 10, a multi-layer PCB 10, or a high-density interconnect PCB 10.

[0079] In an embodiment, asFigure 1 As shown, the PCB 10 processing equipment further comprises a first bed 5, a first gantry system and a first worktable 2 located below the air floating vibration spindle 1. Specifically, the first gantry system is composed of a beam base 3 and a beam 4 arranged on the beam base 3, the beam base 3 comprises a first base 31 and a second base 32 arranged at intervals, one end of the first base 31 and the second base 32 is connected with the beam 4 by fasteners, thereby forming the first gantry system. The beam 4 can be made of rigid materials such as marble, steel or aluminum alloy to enhance its stability. In addition, a passage is formed between the first gantry system and the first bed 5. For example, one end of the first base 31 and the second base 32 is connected with the beam 4 respectively, and the other end is connected with the first bed 5, thereby forming a moving passage for the first worktable 2 between the two bases, preferably, the edges of the first base 31 and the second base 32 can coincide with the edges of the first bed 5 to better utilize the space, which is not limited here.

[0080] Further, the air floating vibration spindle 1 is arranged in the first gantry system, and the air floating vibration spindle 1 can move along the first direction; as an example, a first motion assembly 6 for moving along the first direction and a spindle fixing assembly for fixing the air floating vibration spindle 1 can be arranged between the air floating vibration spindle 1 and the beam 4, thereby realizing the movement of the air floating vibration spindle 1 in the first direction.

[0081] Specifically, the air floating vibration spindle 1 can be connected with one side of the spindle fixing assembly, and the other side of the spindle fixing assembly is connected with one end of the first motion assembly 6, thereby the first motion assembly 6 can drive the spindle fixing assembly to move along the first direction, thereby driving the air floating vibration spindle 1 to move in the first direction.

[0082] Wherein, the first motion assembly 6 can include but not limited to a motion assembly composed of a linear motor and a guide rail, or a motion assembly composed of a gas static pressure guide rail. Taking the motion assembly composed of a linear motor and a guide rail as an example, the first motion assembly 6 can include a first linear motor, a first rolling guide rail, a first sliding block and a bottom plate. Specifically, the first linear motor and the first rolling guide rail can be fixed on one side of the bottom plate, the first sliding block is arranged on the first rolling guide rail and connected with the first linear motor, and the air floating vibration spindle 1 is connected with the first sliding block through the spindle fixing assembly. When working, the first linear motor drives the first sliding block to move along the first rolling guide rail in the first direction, thereby driving the air floating vibration spindle 1 to move.

[0083] The first worktable 2 is movably arranged on the first bed 5 along the second direction and / or the third direction, and the first worktable 2 can move into or out of the channel, that is, the first worktable 2 can be movably arranged on the first bed 5 along the second direction, or the first worktable 2 can be movably arranged on the first bed 5 along the third direction, or the first worktable 2 can be movably arranged on the first bed 5 along the second direction and the third direction. Wherein, when the first worktable 2 moves along the second direction, the first worktable 2 can pass through or pass in the channel to realize the movement of the first worktable 2 into or out of the channel.

[0084] As an example, the first two-motion assembly 7 and the first three-motion assembly 8 can be arranged between the first bed 5 and the first worktable 2. Specifically, one end of the first two-motion assembly 7 is connected with one end of the first bed 5, the other end of the first two-motion assembly 7 is connected with one end of the first three-motion assembly 8, and the other end of the first three-motion assembly 8 is connected with the first worktable 2, so that the first two-motion assembly 7 can drive the first three-motion assembly 8 to move along the second direction to drive the first worktable 2 to move along the second direction, and the first three-motion assembly 8 can also drive the first worktable 2 to move along the third direction, so as to realize the movement of the first worktable 2 into or out of the channel and the movement of the first worktable 2 along the third direction in the channel.

[0085] Wherein, the first two-motion assembly 7 and the first three-motion assembly 8 can also include but not limited to a motion assembly composed of a linear motor and a guide rail, or a motion assembly composed of a gas static pressure guide rail. As an example, the first two-motion assembly 7 can include a second linear motor, a second rolling guide rail, a second sliding block and a bottom plate, and the first three-motion assembly 8 can include a third linear motor, a third rolling guide rail and a third sliding block. For example, the second linear motor and the second rolling guide rail are installed on the first bed 5, the second sliding block is arranged on the second rolling guide rail and connected with one side of the bottom plate and the second linear motor. And the third linear motor and the third rolling guide rail are installed on the other side of the bottom plate, and the third sliding block is arranged on the third rolling guide rail and connected with the first worktable 2 and the third linear motor. When working, by controlling the second linear motor and the third linear motor, the first worktable 2 is driven to move along the second direction and / or the third direction to realize the processing of the PCB 10.

[0086] Wherein, the first direction, the second direction and the third direction are perpendicular to each other, and this relationship ensures that the motion assemblies do not interfere with each other when working independently, thereby realizing precise and stable motion control.

[0087] Through the above structure, the PCB 10 is placed on the first workbench 2, which can effectively reduce the problem of the transverse swing of the rotor 152 in the motor assembly 15 caused by the movement of the traditional air floating vibration spindle 1 along the second direction, and further improves the processing precision and efficiency.

[0088] In another embodiment, as shown in Figure 2 The PCB processing equipment further includes a second bed 5, a second gantry system, and a second workbench 2 located below the air floating vibration spindle. A channel is formed between the second gantry system and the second bed 5. Specifically, the second gantry system is similar in structure to the first gantry system, and the process of forming a channel between the second gantry system and the second bed 5 can refer to the example of forming a channel between the first gantry system and the first bed 5 described above. To avoid repetition, it will not be described here.

[0089] Further, the second gantry system and / or the second workbench 2 are movably arranged along the second direction on the second bed 5, and the second workbench 2 can move into or out of the channel, that is, the second gantry system is movably arranged along the second direction on the second bed 5, or the second workbench 2 is movably arranged along the second direction on the second bed 5, or the second gantry system and the second workbench 2 are movably arranged along the second direction on the second bed 5; when the second gantry system and / or the second workbench 2 move, the second workbench 2 can move into or out of the channel. As the second gantry system moves, the second workbench 2 can pass through or pass through the channel to move into or out of the channel.

[0090] As an example, a second motion assembly 7' can be arranged between the second bed 5 and the second workbench 2. One end of the second motion assembly 7' is connected to the second bed 5, and the other end is connected to the second workbench 2, so that the workbench 2 is driven to move along the second direction through the second motion assembly 7'. The second motion assembly 7' can include but is not limited to a motion assembly formed by a linear motor and a guide rail, or a motion assembly formed by a gas static pressure guide rail.

[0091] For example, the second motion assembly 7' can include a fourth linear motor, a fourth rolling guide rail, and a fourth sliding block. For example, the fourth linear motor and the fourth rolling guide rail are mounted on the second bed 5, and the fourth sliding block is arranged on the fourth rolling guide rail and connected to the second workbench 2 and the fourth linear motor. During operation, the fourth linear motor is controlled to drive the fourth sliding block to move along the fourth rolling guide rail in the second direction, thereby realizing the movement of the second workbench 2 into or out of the channel.

[0092] Further, the air-floating vibration spindle 1 is movably arranged along a third direction in the second gantry system, and the air-floating vibration spindle 1 is movable along the first direction; as an example, a second one-motion assembly 6' for moving along the first direction and a second three-motion assembly 8' for moving along the third direction can be arranged between the air-floating vibration spindle 1 and the cross beam 4. The air-floating vibration spindle 1 is driven to move along the first direction by the second one-motion assembly 6', and the second one-motion assembly 6' is driven to move along the third direction by the second three-motion assembly 8', thereby driving the air-floating vibration spindle 1 to move along the third direction.

[0093] It should be understood that the second one-motion assembly 6' and the second three-motion assembly 8' can include, but are not limited to, motion assemblies in the form of linear motors and guide rails, or motion assemblies in the form of aerostatic guide rails, which are not limited in particular here.

[0094] Specifically, the air-floating vibration spindle 1 can be connected to one side of the spindle fixing assembly, the other side of the spindle fixing assembly is connected to one end of the second one-motion assembly 6', the other end of the second one-motion assembly 6' is connected to one end of the second three-motion assembly 8', and the other end of the second three-motion assembly 8' is connected to the cross beam 4.

[0095] As an example, the second one-motion assembly 6' includes a fifth linear motor, a fifth rolling guide rail, a fifth sliding block, and a bottom plate. Specifically, the fifth linear motor and the fifth rolling guide rail can be fixed to one side of the bottom plate, the fifth sliding block is arranged on the fifth rolling guide rail and connected to the fifth linear motor, and the air-floating vibration spindle 1 is connected to the fifth sliding block through the spindle fixing assembly. In operation, the fifth linear motor is controlled to drive the fifth sliding block to move along the fifth rolling guide rail in the first direction, thereby driving the air-floating vibration spindle 1 to move.

[0096] The second three-motion assembly 8' also includes a sixth linear motor, a sixth rolling guide rail, and a sixth sliding block. The sixth linear motor and the sixth rolling guide rail are arranged on the cross beam 4, and the sixth sliding block is arranged on the sixth rolling guide rail and connected to the other side of the bottom plate and the sixth linear motor. In operation, the sixth linear motor is controlled to drive the sixth sliding block to move along the sixth rolling guide rail in the third direction, thereby driving the second one-motion assembly 6' and the air-floating vibration spindle 1 to move in the third direction.

[0097] The first direction, the second direction, and the third direction are perpendicular to each other, which ensures that the motion assemblies do not interfere with each other when working independently, thereby achieving precise and stable motion control.

[0098] In an embodiment, the PCB processing device further includes a control device connected to the air-floating vibration spindle 1.

[0099] As an example, the control device is configured to obtain the processing parameters of the PCB 10, such as the PCB 10 type and the PCB 10 inherent parameters. The PCB 10 type includes high aspect ratio PCB 10, multi-layer PCB 10 or high density interconnect (HDI) PCB 10, and the PCB 10 inherent parameters include specific parameters corresponding to different types of PCB 10, such as the thickness and material properties of high aspect ratio PCB 10, the number of layers and material properties of multi-layer PCB 10, or the interconnect density and micro-hole properties of high density interconnect PCB 10. Further, according to the obtained processing parameters, the control device will analyze and calculate the amplitude and frequency suitable for the current processing conditions. This process can be based on a pre-set processing database, or adjusted through real-time feedback. Next, using the determined amplitude and frequency, the control device further controls the air-floating vibration spindle 1 to drive the processing tool 9 to vibrate in the first direction, so that the processing tool 9 and the PCB 10 form a periodic contact and separation, so as to realize the processing of the PCB 10. Through the above process, the processing precision and efficiency are effectively improved, the error in the processing process is reduced, and the processing quality of the PCB 10 is improved.

[0100] The second aspect provides a PCB processing system, which at least comprises the PCB processing device of the first aspect.

[0101] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A PCB processing apparatus characterized by comprising: The air-floating vibration spindle comprises a spindle shell, a rotating shaft core assembly, a gas static pressure bearing assembly, a gas path structure and a motor assembly. The air-floating vibration spindle can drive the rotating machining tool to vibrate in a first direction with a set amplitude and frequency during the machining process, so that the machining tool and the PCB form periodic contact and separation.

2. The PCB processing apparatus according to claim 1, wherein The air-floating vibration spindle comprises a spindle shell, a rotating shaft core assembly, a gas static pressure bearing assembly, a gas path structure and a motor assembly. The rotating shaft core assembly is arranged in a containing cavity formed by the spindle shell. The motor assembly and the gas static pressure bearing assembly are arranged on the inner wall of the spindle shell, and the motor assembly drives the rotating shaft core assembly to rotate. The gas path structure is arranged in the spindle shell and connected with the gas static pressure bearing assembly.

3. The PCB processing apparatus according to claim 2, wherein The rotating shaft core assembly comprises a rotating shaft core and a thrust vibration disc. The thrust vibration disc is arranged on the rotating shaft core. The output end of the rotating shaft core is connected with the machining tool.

4. The PCB processing apparatus according to claim 3, wherein The gas static pressure bearing assembly comprises a thrust bearing assembly. The thrust bearing assembly comprises an upper gas dynamic and static pressure thrust bearing and a lower gas dynamic and static pressure thrust bearing. The upper gas dynamic and static pressure thrust bearing and the lower gas dynamic and static pressure thrust bearing are sleeved on the upper end of the rotating shaft core, and the thrust vibration disc is located between the upper gas dynamic and static pressure thrust bearing and the lower gas dynamic and static pressure thrust bearing.

5. The PCB processing apparatus according to claim 4, wherein The gas static pressure bearing assembly further comprises a radial bearing assembly. The radial bearing assembly comprises an upper gas static pressure radial bearing and a lower gas static pressure radial bearing. The upper gas static pressure radial bearing and the lower gas static pressure radial bearing are sleeved on the lower end of the rotating shaft core, and the upper gas static pressure radial bearing abuts against the lower gas dynamic and static pressure thrust bearing, and the lower gas static pressure radial bearing abuts against the bottom of the spindle shell.

6. The PCB processing apparatus according to claim 5, wherein The gas path structure further comprises an air inlet, an air channel, a first annular air groove, a second annular air groove, a third annular air groove and a fourth annular air groove. The air inlet is arranged in the spindle shell and located at the upper end of the spindle shell. The first annular air groove is connected with the upper gas dynamic and static pressure thrust bearing, the second annular air groove is connected with the lower gas dynamic and static pressure thrust bearing, the third annular air groove is connected with the upper gas static pressure radial bearing, and the fourth annular air groove is connected with the lower gas static pressure radial bearing. The air inlet is connected with the air channel, and the air channel is connected with the first annular air groove, the second annular air groove, the third annular air groove and the fourth annular air groove respectively.

7. The PCB processing apparatus according to claim 6, wherein The annular air groove comprises one or more.

8. The PCB processing apparatus according to any one of claims 2 to 7, characterized by, The motor assembly comprises a stator and a rotor. The stator is fixedly connected to the inner wall of the spindle shell, and the rotor is fixedly connected to the rotating shaft core.

9. The PCB processing apparatus according to any one of claims 1 to 7, characterized by, The PCB machining device further comprises a first bed, a first gantry system and a first workbench located below the air-floating vibration spindle. A channel is formed between the first gantry system and the first bed. The air-floating vibration spindle is arranged in the first gantry system and can move in the first direction. The first worktable is movably arranged in the second direction and / or the third direction on the first bed body, and the first worktable can move into or out of the passage; The first direction, the second direction and the third direction are perpendicular to each other.

10. The PCB processing apparatus according to any one of claims 1 to 7, characterized by, The PCB processing device further comprises a second bed body, a second gantry system and a second worktable arranged below the air-floating vibration spindle; A passage is formed between the second gantry system and the second bed body; The second gantry system and / or the second worktable are movably arranged in the second direction on the second bed body, and the second worktable can move into or out of the passage; The air-floating vibration spindle is movably arranged in the third direction on the second gantry system, and the air-floating vibration spindle can move in the first direction; The first direction, the second direction and the third direction are perpendicular to each other.

11. A PCB processing system characterized by comprising: The PCB processing system comprises at least one PCB processing device as claimed in any one of claims 1-10.

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