CN113681637B - Punching equipment and method for circuit board testing needle bed - Google Patents
Punching equipment and method for circuit board testing needle bed Download PDFInfo
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- CN113681637B CN113681637B CN202110988682.1A CN202110988682A CN113681637B CN 113681637 B CN113681637 B CN 113681637B CN 202110988682 A CN202110988682 A CN 202110988682A CN 113681637 B CN113681637 B CN 113681637B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/14—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for very small holes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/0006—Means for guiding the cutter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R3/00—Apparatus or processes specially adapted for the manufacture or maintenance of measuring instruments, e.g. of probe tips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
- B26F2210/08—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of ceramic green sheets, printed circuit boards and the like
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to the field of micropore drilling, in particular to a punching device of a circuit board testing needle bed, which comprises a drilling machine for fixing a workpiece; the drill bit is used for drilling and is arranged at the output end of the drilling machine; the conductive material covers the surface of the workpiece, or is arranged beside the workpiece and the surface of the conductive material is flush with the surface of the workpiece; and one end of the multimeter is electrically connected with the drill bit, and the other end of the multimeter is electrically connected with the conductive material. The invention also relates to a circuit board test needle bed punching method, which comprises the following steps: s1, electrically connecting a drill bit with one end of a universal meter; s2, covering or forming a layer of conductive material on the surface of the workpiece; s3, electrically connecting the conductive material with the other end of the multimeter; s4, the drill is driven by the drilling machine to be in contact with the conductive material, and the reading of the multimeter changes; s5, removing the universal meter; s6, the drilling machine drives the drill bit to open holes in the workpiece; and S7, removing the conductive material on the workpiece.
Description
Technical Field
The invention relates to the field of micropore drilling, in particular to a punching device of a circuit board testing needle bed. The invention also relates to a circuit board test needle bed punching method.
Background
The number of holes formed in the needle bed of the circuit board is large, the aperture ranges from phi 1.3mm to phi 12mm, and particularly, the micro pin-planting holes such as phi 1.3mm, phi 1.7mm, phi 2mm and phi 2.4mm are formed.
Chinese patent application No. CN201010617542.5 discloses a micropore drilling processing method for aluminum alloy and copper alloy parts, wherein two ends of a universal meter are used for connecting a drill bit and a workpiece, and when the drill bit is in contact with the workpiece, the resistance value of the universal meter is changed, so that precise tool setting is realized.
However, the needle bed is mainly made of non-conductive materials such as glass fiber, synthetic stone, acrylic and the like, so that the micropore drilling method disclosed by the patent is not suitable for precise tool setting between the needle bed and the drill.
Disclosure of Invention
To solve the above technical problems.
The application provides a punching device of a circuit board testing needle bed, which comprises,
the drilling machine is used for fixing the workpiece; and the number of the first and second groups,
the drill bit is used for drilling and is arranged at the output end of the drilling machine;
also comprises a step of adding a new type of additive,
the conductive material covers the surface of the workpiece, or is arranged beside the workpiece and the surface of the conductive material is flush with the surface of the workpiece; and the number of the first and second groups,
and one end of the multimeter is electrically connected with the drill bit, and the other end of the multimeter is electrically connected with the conductive material.
Preferably, the electrically conductive material comprises,
a first module having a bottom surface, the first module overlying a surface of the workpiece; and (c) a second step of,
and a second module having a top surface and being electrically conductive, the bottom surface of the first module being coplanar with the top surface of the second module.
Preferably, the conductive material is connected to the non-working portion of the drill press by a cylindrical pair.
Preferably, the tapping device further comprises a first pre-contact module linked with the output end of the drilling machine, the first pre-contact module has a conductive end portion, the height of the conductive end of the first pre-contact module is lower than that of the drill bit, and the conductive end of the first pre-contact module is electrically connected with the drill bit.
Preferably, the tapping device further comprises a mechanical arm linked with the output end of the drilling machine, and the first pre-contact module is arranged at the output end of the mechanical arm.
Preferably, the first pre-contact module comprises,
a first conductive contact electrically connected to the drill bit; and (c) a second step of,
the first conductive contact always has a first elastic structure with a downward movement trend, and the first elastic structure is linked with the output end of the drilling machine.
Preferably, the first pre-contact module further comprises a resistor, and the first conductive contact is electrically connected with the drill bit through the resistor.
Preferably, the tapping device further comprises,
the mechanical arm is linked with the output end of the drilling machine, and the first pre-contact module is arranged at the output end of the mechanical arm; and the number of the first and second groups,
and the second pre-contact module is linked with the first pre-contact module, the second pre-contact module is electrically connected with the first conductive contact through a resistor, and when the mechanical arm drives the first pre-contact module to move to enable the height of the first pre-contact module to be lower than that of the drill bit, the second pre-contact module is electrically connected with the drill bit.
Preferably, the tapping device further comprises a third pre-contact module, the third pre-contact module comprising,
the conductive material is electrically connected with the multimeter through the third conductive contact, and the height of the third conductive contact is lower than that of the first conductive contact; and the number of the first and second groups,
and the third conductive contact always has a third elastic structure with a downward movement trend, and the third elastic structure is linked with the output end of the drilling machine.
The application also provides a circuit board testing needle bed punching method, which comprises the following steps,
s1, electrically connecting a drill bit with one end of a universal meter;
s2, covering or forming a layer of conductive material on the surface of the workpiece;
s3, electrically connecting the conductive material with the other end of the multimeter;
s4, the drill is driven by the drilling machine to be in contact with the conductive material, and the reading of the multimeter changes;
s5, removing the universal meter;
s6, the drilling machine drives the drill bit to open holes in the workpiece;
and S7, removing the conductive material on the workpiece.
Compared with the prior art, the application has the beneficial effects that:
1. the application enables the existing precise tool setting method only used on metal workpieces and also used on non-conductive workpieces such as circuit board test needle beds by covering or forming a conductive layer on the non-conductive workpieces.
2. According to the method, the first module and the second module form a conductive reference object which is as high as the top surface of the workpiece at the side of the workpiece, so that the existing precise tool setting method only used on metal workpieces can precisely set tools through the conductive reference object, and the method is suitable for non-conductive workpieces such as a circuit board test needle bed.
Drawings
FIG. 1 is a perspective view of a stand-by state in which an embodiment of the invention is implemented;
FIG. 2 is a perspective view of a first embodiment of the invention;
FIG. 3 is a perspective view of a second embodiment of the invention;
FIG. 4 is a perspective view of a third embodiment for carrying out the present invention;
FIG. 5 is a front view of a third embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a front view of a fourth embodiment of an implementation of the present invention;
FIG. 8 is a partial enlarged view of FIG. 7 at B;
FIG. 9 is a perspective view of a first pre-contact module and a second pre-contact module embodying the present invention;
FIG. 10 is a front view of a fifth embodiment embodying the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 at C;
FIG. 12 is a front view of a sixth embodiment embodying the present invention;
FIG. 13 is a perspective view of a sixth embodiment of the invention;
the reference numbers in the figures are:
1, drilling a machine; 1 a-a power head;
2-a drill bit; 2 a-a test clip; 2 b-a first wire; 2 c-a second wire;
3-a conductive material; 3 a-a first module; 3 b-a second module;
4-corner pressing cylinder;
5-a first pre-contact module; 5 a-a first conductive contact; 5 b-a first slide bar; 5b 1-annular flange; 5 c-a first sliding sleeve; 5 d-a first bolt; 5 e-a first spring; 5 f-resistance;
6, a mechanical arm; 6 a-a rotary drive; 6 b-a first link; 6 c-linear drive; 6 d-a second link;
7-a second pre-contact module; 7 a-a second conductive contact; 7 b-a third link; 7 c-a fourth link; 7 d-a second sliding sleeve; 7 e-a second slide bar; 7 f-a second spring; 7 g-third wire;
8-a third pre-contact module; 8 a-a third conductive contact.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In order to solve the technical problem, as shown in fig. 1 and 2, the first embodiment is provided:
a punching device of a circuit board testing needle bed comprises,
a drilling machine 1 for fixing a workpiece; and (c) a second step of,
a drill bit 2 for drilling, which is installed at an output end of the drilling machine 1;
it is characterized by also comprising the following steps of,
the conductive material 3 covers the surface of the workpiece, or is arranged beside the workpiece and the surface of the conductive material is flush with the surface of the workpiece;
and one end of the multimeter is electrically connected with the drill bit 2, and the other end of the multimeter is electrically connected with the conductive material 3.
Specifically, the output end of the drilling machine 1 is a power head 1a, and the workpiece is fixedly mounted on a workbench of the drilling machine 1 through a jig.
As shown in figure 1, the conductive material 3 adopts an ultrathin aluminum foil, the drill bit 2 is provided with a test clamp 2a in a clamping mode, the test clamp 2a is connected with one end of a multimeter through a first lead 2b, when the drill bit 2 is in contact with the conductive material 3, the reading of the multimeter changes, and at the moment, the drill bit 2 and the conductive material 3 achieve precise tool setting. Then, the drill 2 is lifted to be away from the conductive material 3, the conductive material 3 is removed, and then the drill 2 is reset, so that the drilling process can be started. Alternatively, after all the holes are drilled in the workpiece, the conductive material 3 is removed.
The conductive material 3 can also be a layer of ultrathin metal powder which is adsorbed on a workpiece through static electricity, after the precise tool setting is finished, a static eliminator is used for eliminating the charge on the metal powder, and then the metal powder is blown away or sucked away.
The conductive material 3 may also be an ultra-thin metal plating layer adsorbed on the workpiece by electroplating or hot-dip plating, and after precise tool setting and drilling are completed, the metal plating layer is ground off by using a grinding machine, or the plating layer is etched off by using a chemical agent.
No matter how to use the modes of attaching, adsorbing, electroplating, hot-dip and the like to cover or form a layer of conductive material 3 on the surface of the workpiece, the method is troublesome, not enough automatic, and more consumed materials, and in order to solve the technical problem, as shown in fig. 3, a second embodiment is provided:
the electrically conductive material 3 comprises a material which is,
a first module 3a having a bottom surface, the first module 3a covering a surface of the workpiece; and (c) a second step of,
a second module 3b having a top surface and being electrically conductive, the bottom surface of the first module 3a being in the same plane as the top surface of the second module 3 b.
Specifically, the conductive material 3 is an arcuate metal plate formed by a sheet metal and grinding process, and the top surface height of the second block 3b is equal to the top surface height of the workpiece when the bottom surface of the first block 3a thereof abuts and conforms to the surface of the workpiece. Then, using the method of the first embodiment, the drill 2 and the second module 3b are precisely adjusted in tool, and at this time, the height of the drill 2 is equal to the height of the drill 2 and the workpiece after precise tool adjustment.
In order to further improve the efficiency of precision tool setting, as shown in fig. 3, the following preferred technical solutions are provided:
the conductive material 3 is connected with the non-working part of the drilling machine 1 through a cylindrical pair.
Specifically, a mounting hole is formed in the center of gravity of the conductive material 3, a corner pressing cylinder 4 is mounted on a non-working portion of the drilling machine 1, the mounting hole of the conductive material 3 is fixedly connected with the output end of the corner pressing cylinder 4, and the corner pressing cylinder 4 is used for providing rotating and moving power for the conductive material 3.
Before the drill bit 2 carries out precise tool setting, the first module 3a rotates to a position right above the workpiece and then descends until the bottom surface of the first module is attached to the top surface of the workpiece. After the drill bit 2 is precisely adjusted in tool and reset is completed, the first module 3a rises and then rotates to the side of the workpiece, so as to avoid the working track of the drill bit 2.
The method of the first embodiment and the second embodiment is used for precise tool setting, and manual intervention is needed, namely: when 2 apart from conducting material 3 are far away at the drill bit, operation drilling machine 1 makes 2 fast feeds of drill bit, and when 2 apart from conducting material 3 are nearer at the drill bit, operation drilling machine 1 makes 2 slow feeds of drill bit even step-by-step, avoids 2 high-speed clashes in drill bit to cause 2 damages of drill bit on conducting material 3, and this just makes accurate tool setting need consume a large amount of manpowers and time, is unfavorable for automaticly. In order to solve this technical problem, as shown in fig. 4, a third embodiment is provided:
the tapping equipment further comprises a first pre-contact module 5 linked with the output end of the drilling machine 1, the first pre-contact module 5 is provided with a conductive end portion, the height of the conductive end of the first pre-contact module 5 is lower than that of the drill bit 2, and the conductive end of the first pre-contact module 5 is electrically connected with the drill bit 2.
Specifically, the drill bit (2) is clamped with a test clamp 2a, and the test clamp 2a is connected with the conductive end of the first pre-contact module 5 through a second lead 2 c.
The linkage of the first pre-contact module 5 and the output end of the drilling machine 1 refers to the following two conditions:
1, a first pre-contact module 5 is connected directly or indirectly to the powerhead 1 a.
2, the first pre-contact module 5 is installed at the output end of the industrial robot, and the output end of the industrial robot moves along with the power head 1a through a program, so that the first pre-contact module 5 always moves synchronously with the power head 1 a.
When 2 apart from conducting material 3 are far away at the drill bit, drilling machine 1 drive drill bit 2 fast feed, until first contact module 5 and the contact of conducting material 3 in advance, the reading of universal meter produced the change this moment, then remove first contact module 5 in advance, the reading of universal meter resets, and drilling machine 1 drive drill bit 2 slow feed even step-by-step, the reading that reaches the universal meter produced the change to accomplish accurate tool setting.
In order to solve the technical problem of how to remove the first pre-contact module 5 before the drill 2 is fed slowly, as shown in fig. 4, the following preferred solutions are provided:
the tapping equipment further comprises a mechanical arm 6 linked with the output end of the drilling machine 1, and the first pre-contact module 5 is arranged at the output end of the mechanical arm 6.
Specifically, the linkage of the mechanical arm 6 and the output end of the drilling machine 1 also includes the two situations, and in this embodiment, the first pre-contact module 5 is indirectly connected with the power head 1a through the mechanical arm 6.
The mechanical arm 6 comprises a rotary driver 6a, a first connecting rod 6b, a linear driver 6c and a second connecting rod 6d, the rotary driver 6a is connected with the power head 1a, the first connecting rod 6b is arranged at the output end of the rotary driver 6a, the rotary driver 6a is used for driving the first connecting rod 6b to rotate, the rotary driver 6a adopts a swing air cylinder, the linear driver 6c is arranged on the first connecting rod 6b, the second connecting rod 6d is arranged at the output end of the linear driver 6c, the linear driver 6c is used for driving the second connecting rod 6d to linearly move, the linear driver 6c adopts an air cylinder sliding table, and the first pre-contact module 5 is arranged on the second connecting rod 6 d.
Before the primary tool setting, the rotary driver 6a and the linear driver 6c work to drive the first pre-contact module 5 to move to the side of the drill bit 2, and the height of the first pre-contact module 5 is lower than that of the drill bit 2, so that the first pre-contact module 5 can contact the conductive material 3 before the drill bit 2, and before the precise tool setting, the rotary driver 6a and the linear driver 6c work to drive the first pre-contact module 5 to be far away from the drill bit 2 and the conductive material 3, and the first pre-contact module 5 is prevented from interfering the contact between the drill bit 2 and the conductive material 3.
In order to solve the technical problem that repeated high-speed impacts of the first pre-contact module 5 on the conductive material 3 easily cause damage to the workpiece or the first pre-contact module 5, as shown in fig. 5 and 6, the following preferred technical solutions are provided:
the first pre-contact module 5 comprises,
a first conductive contact 5a electrically connected to the drill bit 2; and the number of the first and second groups,
the first conductive contact 5a always has a first elastic structure with a tendency to move downward, and the first elastic structure is linked with the output end of the drilling machine 1.
In this embodiment, the test clip 2a is electrically connected to the first conductive contact 5a through the second conductive wire 2c, the first elastic structure is used to reduce the impact force when the first conductive contact 5a contacts with the conductive material 3, and the first conductive contact 5a is a metal ball.
The first elastic structure is indirectly installed on a mounting plate connected with the power head 1a, specifically, an output end of the mechanical arm 6, and includes a first sliding rod 5b, a first sliding sleeve 5c, a first bolt 5d and a first spring 5e, one end of the first sliding rod 5b is provided with an annular flange 5b1 extending radially outwards, the first bolt 5d is installed at the other end of the first sliding rod 5b in a threaded manner, an annular flange located at the other end of the first sliding rod 5b is formed by a bolt head of the first bolt 5d, the first sliding rod 5b is slidably arranged on the first sliding sleeve 5c, the annular flange 5b1 and the first bolt 5d are respectively located outside two ends of the first sliding sleeve 5c, the first sliding sleeve 5c is arranged on the second connecting rod 6d, the first spring 5e is sleeved on the first sliding rod 5b, and two ends of the first spring 5e are respectively abutted against the annular flange 5b1 and the first sliding sleeve 5 c.
Under the condition of no mechanical arm 6, it is troublesome to remove the first pre-contact module 5 before the precise tool setting, and if the first pre-contact module 5 can be removed after the precise tool setting, the work efficiency is increased, but because the first pre-contact module 5 is electrically connected with the drill bit 2, the circuit is already connected after the first pre-contact module 5 is electrically connected with the conductive material 3, and the reading of the multimeter cannot be changed when the drill bit 2 is contacted with the conductive material 3, so that whether the precise tool setting of the drill bit 2 is completed or not cannot be judged, and in order to solve the technical problem, as shown in fig. 6, the following preferable technical scheme is provided:
the first pre-contact module 5 further comprises a resistor 5f, through which resistor 5f the first conductive contact 5a is electrically connected with the drill bit 2.
Specifically, the first conductive contact 5a is electrically connected with the drill bit 2 sequentially through the resistor 5f, the second lead 2c and the test clip 2a, wherein the second lead 2c is electrically connected with one end of a multimeter, and the other end of the multimeter is electrically connected with the conductive material 3.
First conductive contact 5a earlier with conducting material 3 when contacting, the circuit intercommunication at universal meter both ends, the reading of universal meter changes, and when drill bit 2 contacted with conducting material 3 afterwards, resistance 5f was by the short circuit, and the resistance of the circuit at universal meter both ends changes to make the reading of universal meter also change, when the reading of universal meter produced twice changes, then can judge that accurate tool setting was accomplished.
Before the mechanical arm 6 drives the first pre-contact module 5 to be far away from the drill 2 and the conductive material 3, a worker needs to first remove the test clamp 2a from the drill 2, which makes the tool setting process not automatic enough, reduces the production efficiency, and in order to solve the technical problem, as shown in fig. 7, a fourth embodiment is provided:
the tapping device may further comprise a tapping means for tapping the fluid,
the mechanical arm 6 is linked with the output end of the drilling machine 1, and the first pre-contact module 5 is arranged at the output end of the mechanical arm 6; and the number of the first and second groups,
and the second pre-contact module 7 is linked with the first pre-contact module 5, the second pre-contact module 7 is electrically connected with the first conductive contact 5a through a resistor 5f, and when the mechanical arm 6 drives the first pre-contact module 5 to move to enable the height of the first pre-contact module to be lower than that of the drill bit 2, the second pre-contact module 7 is electrically connected with the drill bit 2.
Specifically, there are two linkage modes of the second pre-contact module 7 and the first pre-contact module 5, one is that the second pre-contact module 7 and the first pre-contact module 5 are both installed on the second connecting rod 6d, and the other is that the second pre-contact module 7 is driven by an independent mechanical arm or an industrial robot, and the mechanical arm or the industrial robot enables the second pre-contact module 7 and the first pre-contact module 5 to move synchronously through a preset program.
Before tool setting, the mechanical arm 6 drives the first pre-contact module 5 to move to be lower than the drill bit 2, and the second pre-contact module 7 is electrically connected with the drill bit 2, so that the drill bit 2 is electrically connected with the first conductive contact 5a through the second pre-contact module 7, the resistor 5f and the first pre-contact module 7. When the precision tool setting is completed, namely the drill bit 2 is in contact with the conductive material 3, the mechanical arm 6 drives the first pre-contact module 5 and the second pre-contact module 7 to be far away from the conductive material 3, and then the drill machine 1 drives the drill bit 2 to drill.
In order to solve the technical problem of how to flexibly or elastically electrically connect the second pre-contact module 7 with the drill bit 2 and avoid the damage to the drill bit 2 caused by the contact between the second pre-contact module 7 and the drill bit 2, as shown in fig. 8, the following preferred technical solutions are provided:
the second pre-contact module 7 comprises,
a second conductive contact 7a abutting and electrically connected with the drill bit 2; and (c) a second step of,
a second elastic structure that makes the second conductive contact 7a always have a tendency to move towards the drilling head 2, the second elastic structure being linked with the first pre-contact module 5; and (c) a second step of,
a third wire 7g connecting the second conductive contact 7a and the resistor 5 f.
Specifically, the second conductive contact 7a is an arc-shaped graphite block, and the drill 2, the second conductive contact 7a, the third wire 7g, the resistor 5f and the first conductive contact 5a are electrically connected in sequence.
As shown in fig. 9, the second elastic structure includes,
a third connecting rod 7b which is connected with the first sliding sleeve 5c and the vertical position of which can be adjusted; and (c) a second step of,
a fourth link 7c connected to the third link 7b and having an adjustable horizontal position; and the number of the first and second groups,
a second sliding sleeve 7d arranged on the fourth connecting rod 7c; and (c) a second step of,
a second sliding rod 7e which is horizontally and slidably arranged on the second sliding sleeve 7d, and the second conductive contact 7a is clamped with the second sliding rod 7 e; and the number of the first and second groups,
so that the second slide bar 7e always has a tendency to approach towards the drilling head 2.
Specifically, the third connecting rod 7b is connected with the first sliding sleeve 5c through the matching of an oblong hole and a bolt and is adjustable in height, the fourth connecting rod 7c is connected with the third connecting rod 7b through the matching of the oblong hole and the bolt and is adjustable in horizontal position, the second sliding sleeve 7d is connected with the second sliding rod 7e in a sliding mode, one end of a third lead 7g is clamped with the second sliding rod 7e and abuts against the second conductive contact 7a, and the other end of the third lead 7g is electrically connected with the first conductive contact 5a through a resistor 5 f.
In order to further improve the production efficiency, for this reason, it is also necessary to reduce the steps of electrically connecting one end of the multimeter to the conductive material 3 by hand, as shown in fig. 10 and 11, embodiment five is provided:
the tapping apparatus further comprises a third pre-contact module 8, the third pre-contact module 8 comprising,
the conductive material 3 is electrically connected with a multimeter through the third conductive contact 8a, and the height of the third conductive contact 8a is lower than that of the first conductive contact 5a; and (c) a second step of,
so that the third conductive contact 8a always has a third elastic structure with a tendency to move downwards, which is linked with the output end of the drilling machine 1.
Specifically, the first conductive contact 5a is the same as the third conductive contact 8a, and the first elastic structure is the same as the third elastic structure.
Before tool setting, the mechanical arm 6 drives the first pre-contact module 5, the second pre-contact module 7 and the third pre-contact module 8 to move, so that the drill bit 2 and the first conductive contact 5a are electrically connected through the second pre-contact module 7, at the moment, one end of a multimeter is electrically connected with the third conductive contact 8a, the other end of the multimeter is electrically connected with the drill bit 2 and the first conductive contact 5a through a resistor 5f, and meanwhile, the heights of the drill bit 2, the first conductive contact 5a and the third conductive contact 8a are gradually decreased.
Firstly, preliminary tool setting is carried out, the power head 1a drives the drill bit 2 to descend at a high speed, the first pre-contact module 5, the second pre-contact module 7 and the third pre-contact module 8 are linked with the drill bit 2 to descend synchronously, the third conductive contact 8a contacts the conductive material 3 firstly, one end of the multimeter is electrically connected with the conductive material 3 through the third conductive contact 8a, then the first conductive contact 5a contacts the conductive material 3, two ends of the multimeter are communicated with each other through the third conductive contact 8 a-the conductive material 3-the first conductive contact 5 a-the resistor 5f, reading of the multimeter changes, and the preliminary tool setting is finished. The drilling machine 1 is switched to a precise tool setting process, the power head 1a drives the drill bit 2 to descend at a low speed until the drill bit 2 is in contact with the conductive material 3, at the moment, the drill bit 2 and the third wire 7g short circuit the resistor 5f, two ends of the universal meter are respectively communicated through the third conductive contact 8a, the conductive material 3 and the drill bit 2 of the circuit, the reading of the universal meter changes again, and the precise tool setting is finished.
Combining the advantages of the second embodiment with the advantages of the fifth embodiment, the sixth embodiment shown in fig. 12 and 13 can be obtained:
the working principle of the sixth embodiment is basically the same as that of the fifth embodiment, except that before initial tool setting, the corner pressing cylinder 4 drives the conductive material 3 to rotate and press down, so that the bottom surface of the first module 3a is attached to the top surface of the workpiece, then the drilling machine 1 drives the drill bit 2 to move so as to precisely set the tool with the top surface of the second module 3b, after precise tool setting is finished, the drilling machine 1 records the height of the drill bit 2 during precise tool setting, then drives the drill bit 2 to reset, then the corner pressing cylinder 4 drives the conductive material 3 to ascend and rotate, the drilling machine 1 drives the drill bit 2 to move right above the workpiece, and the drill bit 2 is enabled to restore to the height of the drill bit 2 during precise tool setting.
A method for punching a needle bed for testing a circuit board comprises the following steps,
s1, electrically connecting a drill bit 2 with one end of a multimeter;
s2, covering or forming a layer of conductive material 3 on the surface of the workpiece;
s3, electrically connecting the conductive material 3 with the other end of the multimeter;
s4, the drilling machine 1 drives the drill bit 2 to be in contact with the conductive material 3, and the reading of the multimeter changes;
s5, removing the universal meter;
s6, the drilling machine 1 drives the drill bit 2 to open a hole in the workpiece;
and S7, removing the conductive material 3 on the workpiece.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A punching device of a circuit board testing needle bed comprises,
a drilling machine (1) for fixing a workpiece; and the number of the first and second groups,
the drill bit (2) is used for drilling and is arranged at the output end of the drilling machine (1);
it is characterized by also comprising the following steps of,
the conductive material (3) covers the surface of the workpiece, or is arranged beside the workpiece and the surface of the conductive material is flush with the surface of the workpiece; and (c) a second step of,
one end of the universal meter is electrically connected with the drill bit (2), and the other end of the universal meter is electrically connected with the conductive material (3);
the drill bit pre-contact structure comprises a first pre-contact module (5) linked with the output end of a drill machine (1), wherein the first pre-contact module (5) is provided with a conductive end part, the height of the conductive end of the first pre-contact module (5) is lower than that of a drill bit (2), and the conductive end of the first pre-contact module (5) is electrically connected with the drill bit (2).
2. A circuit board testing needle bed punching device according to claim 1, characterized in that the conductive material (3) comprises,
a first module (3 a) having a bottom surface, the first module (3 a) covering a surface of the workpiece; and the number of the first and second groups,
a second module (3 b) having a top surface and being electrically conductive, the bottom surface of the first module (3 a) being in the same plane as the top surface of the second module (3 b).
3. A board testing needle bed tapping apparatus according to claim 2, characterized in that the conductive material (3) is connected to the non-working part of the drilling machine (1) by means of a cylinder pair.
4. The punching equipment for the circuit board testing needle bed according to any one of claims 1 to 3, characterized by further comprising a mechanical arm (6) linked with the output end of the drilling machine (1), wherein the first pre-contact module (5) is arranged at the output end of the mechanical arm (6).
5. The circuit board testing needle bed punching device according to any one of claims 1 to 3, characterized in that the first pre-contact module (5) comprises,
a first conductive contact (5 a) electrically connected to the drill (2); and the number of the first and second groups,
the first conductive contact (5 a) is always provided with a first elastic structure with the trend of moving downwards, and the first elastic structure is linked with the output end of the drilling machine (1).
6. A circuit board testing needle bed tapping device according to claim 5, characterized in that the first pre-contact module (5) further comprises a resistor (5 f), the first conductive contact (5 a) being electrically connected to the drilling head (2) through the resistor (5 f).
7. The apparatus of claim 6, wherein the apparatus further comprises a needle bed for testing the circuit board,
the mechanical arm (6) is linked with the output end of the drilling machine (1), and the first pre-contact module (5) is arranged at the output end of the mechanical arm (6); and the number of the first and second groups,
the second pre-contact module (7) is linked with the first pre-contact module (5), the second pre-contact module (7) is electrically connected with the first conductive contact (5 a) through a resistor (5 f), and when the mechanical arm (6) drives the first pre-contact module (5) to move to enable the height of the first pre-contact module to be lower than that of the drill bit (2), the second pre-contact module (7) is electrically connected with the drill bit (2).
8. A circuit board testing needle bed tapping device according to claim 5, characterized in that the tapping device further comprises a third pre-contact module (8), the third pre-contact module (8) comprising,
the conductive material (3) is electrically connected with a multimeter through the third conductive contact (8 a), and the height of the third conductive contact (8 a) is lower than that of the first conductive contact (5 a); and the number of the first and second groups,
and the third conductive contact (8 a) always has a third elastic structure with the trend of moving downwards, and the third elastic structure is linked with the output end of the drilling machine (1).
9. An opening method for the opening device of the circuit board testing needle bed according to claim 1, characterized by comprising the following steps,
s1, electrically connecting a drill bit (2) with one end of a universal meter;
s2, covering or forming a layer of conductive material (3) on the surface of the workpiece;
s3, electrically connecting the conductive material (3) with the other end of the multimeter;
s4a, driving a drill bit (2) to feed quickly by a drilling machine (1) until the reading of a multimeter changes;
s4b, removing the first pre-contact module (5), and resetting the reading of the multimeter;
s4c, the drilling machine (1) drives the drill bit (2) to feed slowly until the reading of the multimeter changes;
s5, removing the universal meter;
s6, the drilling machine (1) drives the drill bit (2) to open holes in the workpiece;
and S7, removing the conductive material (3) on the workpiece.
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