CN216578264U - Drilling equipment - Google Patents

Abstract

The specification provides drilling equipment, and relates to the technical field of machinery. A drilling apparatus comprising: a controller; the driver is electrically connected with the controller and receives a control signal issued by the controller; a drill electrically connected to the driver, drilling in a vertical direction based on the driving of the driver; the current probe comprises a source end, a detection end and an output end; one end of the power supply is connected to the source ends of the at least two current probes, and the other end of the power supply is connected to the drill bit; the height sensor is arranged on the drill bit, is electrically connected with the output ends of the at least two current probes, and records the height of the drill bit when receiving the recording signal; wherein the current probe outputs a recording signal to the height sensor through the output terminal when the drill bit is in contact with the conductive layer on the PCB. Through above-mentioned equipment can control drilling depth accurately.

Description

Drilling equipment

Technical Field

The specification relates to the technical field of machinery, in particular to drilling equipment.

Background

As a common form of a Circuit Board, a PCB (printed Circuit Board) has a multi-layer structure formed by printing a Circuit on a single Board body, and laminating a plurality of single Board bodies, and drilling and metalizing the plurality of Board bodies to interconnect the circuits among the multi-layer Board bodies.

With the development of electronic products, circuit designs are becoming more complex, and especially in the case of multilayer boards, the interconnections between the boards may be between the surface layer and the inner layer, between the inner layers, or between the surface layer and the bottom layer. Because each single board is manufactured respectively, each single board has a certain tolerance, after the PCB is formed by pressing, tolerance accumulation of a plurality of single boards exists, and the tolerance accumulation can cause the problem of reduced drilling precision under the condition that the drilling depth needs to be accurately controlled, so that the yield of the PCB is reduced.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present specification provides a drilling apparatus.

In combination with a first aspect of embodiments of the present specification, there is provided a drilling apparatus comprising:

a controller;

the driver is electrically connected with the controller and receives a control signal sent by the controller;

a drill electrically connected to the driver, drilling in a vertical direction based on the driving of the driver;

the current probe comprises a source end, a detection end and an output end;

one end of the power supply is connected to the source ends of the at least two current probes, and the other end of the power supply is connected to the drill bit; and the number of the first and second groups,

the height sensor is arranged on the drill bit, is electrically connected with the output ends of the at least two current probes, and records the height of the drill bit when receiving a recording signal;

wherein the current probe outputs a recording signal to the height sensor through the output terminal when the drill bit is in contact with the conductive layer on the PCB.

Optionally, the height sensor is electrically connected with the controller;

wherein, after recording the height of the drill bit, the height sensor outputs the recorded height of each layer of the PCB to the controller.

Optionally, the apparatus further includes:

a display unit electrically connected with the height sensor;

after the height of the drill bit is recorded, the height sensor outputs the recorded height of each layer of the PCB to the display unit.

Further, the driver comprises a motor and a lifting platform, and the motor is connected with the drill bit;

after receiving a control signal sent by the controller, the motor drives the drill bit to rotate, and the lifting platform drives the drill bit to move in the vertical direction.

The technical scheme provided by the implementation mode of the specification can have the following beneficial effects:

in the embodiment of the specification, a plurality of current probes with current detection functions are arranged, the current probes are connected with the conductive layer of the PCB, when the drill bit drills to the conductive layer, the drill bit, the power supply, the current probes and the conductive layer form a loop, the output ends of the current probes output recording signals to the height sensor arranged on the drill bit, and the height sensor records the current height of the drill bit, so that a worker can obtain the thickness of each layer of single plate in the PCB.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.

Fig. 1 is a schematic structural view of a drilling apparatus according to an embodiment of the present application;

FIG. 2 is a schematic view of movement of a drill bit in a drilling apparatus according to embodiments of the present application;

FIG. 3 is a schematic diagram of a drilling apparatus for drilling a PCB according to embodiments of the present application;

fig. 4 is a schematic structural view of another drilling apparatus according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification.

The present application provides a drilling apparatus 100, as shown in fig. 1, comprising: a housing (not shown) in which the following structure is provided.

The controller 1 may have an arithmetic function, may select a single processing chip, and may also be composed of a counter, a comparator, and other circuit devices, which are not limited thereto.

And the driver 2 is electrically connected with the controller 1 and receives the control signal sent by the controller 1. The driver 2 may comprise a motor and a peripheral control circuit, and may drive the drill bit 3 to rotate at a high speed after receiving the control signal. Of course, the driver 2 may also include a lifting table or the like capable of driving the drill 3 to move in the vertical direction.

And a drill 3 electrically connected to the driver 2 and adapted to drill a hole in a vertical direction by the driving of the driver 2.

The at least two current probes 4 include a source terminal S, a detection terminal D, and an output terminal O.

And one end of the power supply 5 is connected to the source ends S of the at least two current probes 4, and the other end of the power supply 5 is connected to the drill bit 3.

The height sensor 6 is provided in the drill 3, electrically connected to the output terminals O of the at least two current probes 4 (indicated by a dotted line in the figure), and records the height of the drill 3 when receiving a recording signal.

Wherein the current probe 4 outputs a recording signal to the height sensor 6 through the output terminal O when the drill 3 is in contact with the conductive layers 70-74 on the PCB 7.

The drilling apparatus 100 may further include a bearing platform 9 for arranging a PCB7 to be drilled, such as the PCB7 shown in fig. 1, which includes four layers of single boards. In the vertical direction, four conductive layers 70-74 are disposed from top to bottom, and the conductive layers 70-74 may be back-drilled surfaces 70 or ground layers 71-74 between the single boards.

When drilling, the PCB7 is placed on the bearing table 9, and the drilling equipment is started, and the through holes on the PCB7 are drilled to determine the actual thickness of each layer of veneer. Specifically, under the control of the controller 1, the driver 2 drives the drill 3 to start rotating at a high speed, and starts moving toward the PCB 7. When the drill bit 3 contacts the back drilling surface 70, the current probe 40, the power supply 5, the back drilling surface 70 and the drill bit 3 form a loop, and the output end O of the current probe 40 outputs a recording signal to the height sensor 6 to record the first-time position information. Thereafter, as shown in fig. 2, the drill 3 moves downward to start drilling the PCB7, and when the drill 3 reaches the ground layer 71, the current probe 41, the power supply 5, the ground layer 71 and the drill 3 form a loop, and the output O of the current probe 41 outputs a recording signal to the height sensor 6 to record the position information of the second time. At this time, the height sensor 6 having the calculation capability or the controller 1 receiving the position information output from the height sensor 6 may perform calculation based on the position information twice, and the calculation result is the distance from the back drill surface 70 to the ground layer 71, that is, the thickness h1 of the first floor veneer.

Thereafter, the drill 3 continues to move downward, gradually drilling through the second layer of single plate, the third layer of single plate and the fourth layer of single plate, and the height sensor 6 or the controller 1 can respectively calculate the thickness h2 of the second layer of single plate, the thickness h3 of the third layer of single plate and the thickness h4 of the fourth layer of single plate.

Then, the thicknesses of the first layer veneer to the fourth layer veneer may be summarized to the controller 1, and may be displayed by the display unit 8 (for example, a display, etc.), so that the staff can respectively obtain the thickness of each layer veneer. Or the worker may preset the drilling depth of the selected single plate during the subsequent drilling of the interconnection hole, and the controller 1 may calculate the drilling depth from the back drilling surface 70 to the selected single plate based on the drilling depth and the thickness of the single plate included in the selected single plate, and realize the high-precision drilling.

For the depth calculation of the drilled hole, as shown in fig. 3, the target of the drilled hole is a line 7X, and the selected veneer corresponding to the drilled hole is a third veneer. Since the thickness h2 of the second veneer is obtained, only the depth hx from the third veneer to the line 7X needs to be controlled, that is, the actual drilling depth is h2+ hx. At this time, since the thickness h2 is actually acquired by the drilling equipment 100, and the drilling depth is determined based on the thickness each time a hole needs to be drilled to the line on the third layer of single plates, the tolerance between the first layer of single plates and the third layer of single plates is absorbed by the acquired thickness, and only the tolerance of the third layer of single plates needs to be considered. In this way, the drilling apparatus 100 can effectively avoid the tolerance from the first layer of veneer to the second layer of veneer on the PCB7, thereby improving the accuracy of drilling.

In the embodiment of the specification, a plurality of current probes with current detection functions are arranged, the current probes are connected with the conductive layer of the PCB, when the drill bit drills to the conductive layer, the drill bit, a power supply, the current probes and the conductive layer form a loop, the output ends of the current probes output recording signals to the height sensors arranged on the drill bit, and the height sensors record the current height of the drill bit, so that a worker can obtain the thickness of each layer of single plate in the PCB.

Optionally, the height sensor 6 is electrically connected to the controller 1;

wherein, after recording the height of the drill bit 3, the height sensor 6 outputs the recorded height of each layer of the PCB to the controller 1.

Optionally, as shown in fig. 4, the apparatus further includes:

a display unit 8 electrically connected to the height sensor 6;

wherein after recording the height of the drill bit 3, the height sensor 6 outputs the recorded heights of the respective layers of the PCB7 to the display unit 8.

Further, the driver 2 comprises a motor and a lifting platform, and the motor is connected with the drill bit 3;

after receiving a control signal sent by the controller 1, the motor drives the drill bit 3 to rotate, and the lifting platform drives the drill bit 3 to move in the vertical direction.

The technical scheme provided by the implementation mode of the specification can have the following beneficial effects:

in the embodiment of the specification, a plurality of current probes with current detection functions are arranged, the current probes are connected with the conductive layer of the PCB, when the drill bit drills to the conductive layer, the drill bit, a power supply, the current probes and the conductive layer form a loop, the output ends of the current probes output recording signals to the height sensors arranged on the drill bit, and the height sensors record the current height of the drill bit, so that a worker can obtain the thickness of each layer of single plate in the PCB.

It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (4)

1. A drilling apparatus, comprising:

a controller;

the driver is electrically connected with the controller and receives a control signal sent by the controller;

a drill electrically connected to the driver, drilling a hole in a vertical direction based on the driving of the driver;

the current probe comprises a source end, a detection end and an output end;

one end of the power supply is connected to the source ends of the at least two current probes, and the other end of the power supply is connected to the drill bit; and the number of the first and second groups,

the height sensor is arranged on the drill bit, is electrically connected with the output ends of the at least two current probes, and records the height of the drill bit when receiving a recording signal;

when the drill bit is in contact with a conductive layer on a Printed Circuit Board (PCB), the current probe outputs a recording signal to the height sensor through the output end.

2. The apparatus of claim 1, wherein the height sensor is electrically connected to the controller;

wherein, after recording the height of the drill bit, the height sensor outputs the recorded height of each layer of the PCB to the controller.

3. The apparatus of claim 1, further comprising:

a display unit electrically connected with the height sensor;

and after the height of the drill bit is recorded, the height sensor outputs the recorded height of each layer of the PCB to the display unit.

4. The apparatus of claim 1, wherein the drive comprises a motor and a lift table, the motor being coupled to the drill bit;

after receiving a control signal sent by the controller, the motor drives the drill bit to rotate, and the lifting platform drives the drill bit to move in the vertical direction.

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