JPH01234110A - Precise working machine - Google Patents

Abstract

PURPOSE:To collectively check a lot of pieces and to improve efficiency by moving a large sheet where printed boards are arranged in the cross direction by a designated pitch, blanking except connecting portions, boring positioning holes at both ends, and cutting works for one line in the cross direction. CONSTITUTION:A work 1 is placed at a designated position by positioning pins 7, 7' through reference holes at four corners to hold the end portion thereof by work holding means, and the positioning pins 7, 7' are lowered to move the work. When a groove bed 11 where the work holding means 9 are loosely fitted is moved laterally by a transverse moving feed screw by the calculated average pitch, the work 1 is laterally moved pitch by pitch to blank unnecessary portions 3 of pieces, and the work 1 is moved to a boring portion to form positioning holes b, b' and sent to a cutting portion to cut works for one line where the unnecessary portion 3 is blanked in the cross direction. When the works 1 for one line are cut, a work holding means 9 support portion 18 moves forward a portion which is let be the foremost portion by cutting by a longitudinal feed screw 17 and the work 1 is positioned at a blank portion to be sequentially worked line by line.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention inspects a certain number of printed circuit boards in parallel from a large sheet in which a large number of printed circuit boards, etc. are arranged vertically and horizontally. This product relates to precision processing machines that perform the necessary processing.

[Background of the invention, prior art and problems thereof] It has been known in the electrical parts industry for example to punch out printed circuit boards, which will become the final product, from a large sheet on which a large number of printed circuit boards are arranged. All printed circuit boards, etc. (hereinafter referred to as pieces) that become final products are made into finished products after undergoing various inspections or characteristic tests, but conventionally, the various inspections mentioned above were carried out one by one using inspection machines and characteristic tests. It was attached to a test machine.

Therefore, there was a problem with productivity due to the amount of work involved.

Therefore, in order to improve the efficiency of the above-mentioned inspections, etc., it has been proposed to conduct inspections or characteristic tests on a large number of pieces in parallel in a batch. It became necessary to remove punching, provide positioning means for inspection, etc., and create inspection materials with many pieces arranged in parallel.

By the way, when punching out unnecessary parts for the above-mentioned inspection, etc., as shown in Figs. However, as a device that punches out holes or irregularly shaped molds by punching out holes or irregularly shaped molds with ultra-precise positioning, it is possible to position the center of each hole one by one by image processing, and then punch the center of the hole. There is something to do. When using this method, the positional deviation is extremely small. In addition, there is a device in which a predetermined position is input into a computer in advance, and a precise feed mechanism is used to feed the machine to the specified position, and then immediately drill a hole when the specified position is reached.

However, in the former case, the position of the hole to be drilled must be found each time from within the large sheet (hereinafter referred to as the work);
In other words, the workpiece position and punching position are found through an image processing mechanism and holes are punched at ultra-precise positions, so there is a problem that the processing speed is slow;
Processing speed is fast, but positional deviation is unilateral
There is a problem due to C feed.

In addition, relatively thin and flexible workpieces such as printed circuit boards are often subjected to various treatments such as printing, plating, heat treatment, chemical treatment, etc., and then a hole is drilled in the center of the printed circuit board at the end. In a processed workpiece, the hole position is usually shifted by several microns to several tens of microns compared to before the processing. Therefore, in the drilling process using the one-sided NC feed described above, the misalignment cannot be ignored, and therefore, the current situation is that the drilling process is performed after finding the position of each piece one by one.

Conventionally, the drilling device, the cutting device, and the drilling device for positioning reference pin holes were each independent as separate devices, so they were transported between each device manually. Therefore, there was a problem with work efficiency.

[Problem that the invention seeks to solve]

The present invention was invented in view of the above-mentioned problems.
The purpose of the present invention is to provide a precision processing machine that performs the necessary processing to form a strip-shaped inspection piece in which each piece is connected in a manner that allows a large number of pieces from a workpiece to be subjected to various inspections, etc. at once. It is something.

[Means for solving problems]

In order to achieve the above object, the precision processing machine according to the present invention grasps a large sheet in which printed circuit boards, etc. are regularly arranged in the vertical and horizontal directions, moves the sheet by a predetermined pitch in the horizontal direction, and sequentially processes each of the above. a punching means for punching out unnecessary parts while leaving a connecting part for connecting the printed circuit boards;
The method includes a punching means for punching positioning pin holes at both ends of the punched row, and a cutting means for laterally cutting only the row with positioning pin holes punched at both ends. This is a characteristic feature.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

The precision processing machine of this embodiment has printed circuit boards (pieces) in the vertical and horizontal directions.2.2.2. From the large sheet (work) 1 in which ... etc. are arranged regularly, the piece 2 is
．． 2,2. 3.3.3. Parts unnecessary for inspection etc. around... Punching part A for punching out...
, a perforation part B for drilling reference pin holes for positioning necessary for inspection, etc., and a large number of pieces 2.2, 2.・・・・・・
... is composed of a cutting part C for forming a strip-shaped piece connected by a connecting part a.

The work 1 described above is composed of a large number of works 1, 1, 1°...
. . are transferred one by one onto a plywood board using a vacuum chuck 5 or the like from the work storage area 4 where the workpieces are stacked.

Reference numeral 7.7' denotes an initial positioning pin provided on the base 8.8' so as to be freely movable. A pin hole 1' for initial positioning is provided.

Insert the workpiece 1 into the holes and position the workpiece 1.

The workpiece 1 set at a predetermined position by the initial positioning pins 7.7' is gripped by the workpiece gripping tool 9, and when gripped by the workpiece gripping tool 9, the workpiece 1 is set at a predetermined position by the initial positioning pins 7.7'.
7' is retracted from the surface of the fixed plate 6 so that movement of the workpiece 1 is not hindered.

As shown in FIG. 6, the work gripping tool 9 described above has a lower clip 10' having a groove so that the upper surface of the fixed plate 6 on which the workpiece 1 is slid is at the same height. A workpiece 1 is gripped by an upper clip 10 which is embedded in a groove 12 of a bed 11 and can be opened and closed by an air cylinder 13, and a lower clip 10' which is loosely fitted into the groove 12.

By gripping the workpiece 1' with the workpiece gripping tool 9 as described above, the portion where the workpiece 1 is gripped becomes at the same height as the upper surface of the fixed plate 6, so that the workpiece 1 near the gripping portion is bent. Without this, the workpiece 1 is held and moved on the same plane as the upper surface of the fixed plate 6.

Reference numerals 14 and 14' denote guide tools provided above and below the workpiece gripping tool holder 15, and the guide tools 14 and 14' have grooves that allow the workpiece gripper 9 to be fed laterally by the rotation of the screw 11'. A lateral movement rail 16.16' for lateral movement synchronously with the bed 11 is loosely fitted and guided along the lateral movement rail 16.16'. The grooved bed 11 is guided by lateral movement rails 27.28 provided on the pedestal 25.26 and is moved laterally to a predetermined distance as described above.

Reference numeral 17 denotes a vertical movement member to which a work gripper support member 18 is screwed together and a predetermined rotation speed is applied by a servo motor 19 or the like in order to vertically move the work gripper 9 holding the workpiece 1 described above. The work gripper supporting member 18 is moved along the vertical movement rail 20 by the rotation of the vertical movement screw 17. The workpiece gripper 9 can slide and move in the groove 12 in the vertical direction.

The workpiece l is placed in a predetermined position using the initial positioning pins 7 and 7', and its end portion is gripped by the workpiece gripper 9. When the workpiece 1 is gripped by the workpiece gripper 9, the initial positioning pin 7.7' The pins 7, 7' are lowered from the surface of the workpiece 1 so that movement of the workpiece 1 is not hindered. In this state, while moving the workpiece 1 held by the workpiece gripper 9 in the lateral direction by the movement of the grooved bed 11, the unnecessary portions 3.3. . . . is punched out and removed. In work 1, each piece is arranged in an orderly manner vertically and horizontally, but even in such a work,
Works such as relatively thin and highly flexible substrates,
Because the workpiece 1 has been processed through various processing steps such as printing, plating, high heat treatment, and chemical processing, the position of the center hole of the reference piece is a few microns or tens of microns compared to before the above processing. It is normal for there to be some deviation.

Therefore, for example, when the drilling position is input into a computer in advance as in conventional drilling, and the drilling is performed immediately when the specified position is reached using a precision feed mechanism, the above-mentioned core The deviation cannot be ignored. However, since a large number of pieces of the work l are regularly arranged vertically and horizontally before the above-mentioned processing, slight expansion and contraction occurs both vertically and horizontally after the above-mentioned various processing, but the distortion is proportional. The reality is that the hole pitch has a deviation of several microns.

Therefore, in this embodiment, reference holes 1', 1', .
Process the center position of ... and measure the distance between both ends,
The number of center holes of each piece (according to the number of pieces, the average pitch is calculated by a computer, and the work gripping tool 9 is loosely fitted by rotating the feed screw 17 for lateral movement at this average pitch. The grooved bed 11 is moved laterally, and the workpiece 1 held by the workpiece gripping tool 9 is moved laterally by one pitch on the fixed plate 6, and unnecessary pieces are sequentially arranged in a horizontal row from the end. Part 3. Punch out 3, 3...
In this punching, the connecting parts a, a, a between each piece are
,... is punched out leaving behind. When one horizontal row has been punched out, the workpiece 1 is moved to the positioning pin hole punching section B.

In the positioning pin hole perforation part B, the above-mentioned unnecessary parts 3, 3, 3. Punch out ...... and connect the connecting parts a, a
Using the margins at both ends of the workpieces 1 connected by , a, . vinegar,
When drilling the hole at point b', use the pin hole puncher holder 21.
By making one of the pin hole holes 23 and 24 held by the pin hole holes 22 and 22 circular and the other pin hole hole 24 elliptical, the above-mentioned positioning bottle hole, b
By making one pin b circular and the other pin hole b' oval, it is possible to determine the top and bottom of the strips when they are cut into strips for various inspections as described later. Made useful.

The workpiece 1 with the positioning pin holes b' drilled therein is sent to the cutting section C, where the above-mentioned unnecessary parts 3,
3,3. Cut the punched row in the horizontal direction. The upper cutting blade 29 for this cutting is supported by two swing arms 30.31, and the swing arms 30.31 are swung by the operation of the upper blade driving hydraulic cylinder 32. The upper cutting blade 29 held at .31 moves in an arc and cuts a line of the workpiece 1 at the position of the lower blade 33 into strips. When cutting, as mentioned above, even if the workpiece 1 is extremely thin and highly flexible, the workpiece 1 may warp or bend when cutting by simply moving the upper blade downward. In the embodiment, as described above, the upper cutting blade 2
Since cutting is performed by swinging the workpiece 9, the workpiece 1 does not warp or bend.

As described above, when the frontmost row of the work l is cut, the vertical movement feed screw 17 to which the work gripping tool support member 8 that holds the work gripping tool 9 is screwed is rotated, and the The workpiece 1 is advanced to the punching position of the punched part by cutting the frontmost part into a strip shape, and the workpiece 1 is moved forward to the punching position of the punched part, and the piece at the lateral end of the workpiece 1 is positioned in the punched part A, Punching is started in the same manner as described above, and the steps of punching, punching, and cutting are performed, and in this way, processing is performed sequentially, row by row.

In addition, there are perforated parts B on both sides of the punched part A,
The cutting portions C may be provided respectively, and either the perforation portion B or the cutting portion C may be used depending on the state of punching.

Since this embodiment is configured as described above, a large number of pieces 2, 2, 2 . The above-mentioned large number of pieces 2゜2.2 of the workpiece 1 in which ... are regularly arranged vertically and horizontally.・・・
In order to obtain a strip-shaped test piece suitable for simultaneously testing etc., unnecessary parts 3.3, 3. A punching part A is provided for removing only the ... .

The process is to cut a row of processed parts into strips, leaving ..., but the punching, perforation, and cutting into strips can be done by moving the workpiece 1. As for gripping, the lower clip 10' of the workpiece gripping tool 9 is embedded and loosely fitted into the groove 12 of the grooved bed 11, so that the workpiece holding part by the workpiece holder 9 can be made at the same height as the fixed plate 6. Since the lower clip is located on the fixed plate like in the conventional work gripping part, the workpiece holding part is bent by the height of the lower clip, and as a result, there is a risk that punching will not be possible near the holding part. In addition, since a hard workpiece does not bend, it may not be possible to press it with the conventional type described above, but the workpiece gripping tool 9 of this embodiment holds the lower clip in the groove 12 of the grooved bed 11 as described above. Since it is embedded inside, there is no such fear at all.In addition, the reference numeral 35 in Fig. 5 is a connecting member for the clips 9,9' on both sides, and 36,37 is a member for punching. They are the upper and lower blades.

〔Effect of the invention〕

The present invention aims to obtain a strip-shaped test piece suitable for simultaneously and collectively testing a large sheet of printed circuit boards in which a large number of printed circuit boards are regularly arranged vertically and horizontally. It is provided with a punching part for punching out unnecessary parts for inspection, and after the punching, each printed circuit board is connected by a connecting part, and it is equipped with a punching means for drilling a positioning hole necessary for inspection, and further, It consists of a cutting section that cuts the line of printed circuit boards, which have been punched, perforated, and connected into strips, into strips, and the processing can be carried out while moving the large sheet using a processing machine. All movements can be controlled by a computer, and the test piece can be processed efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of the precision processing machine of the present invention, and FIG.
The front view, Figure 2 is a plan view with a part of the large sheet omitted,
Figure 3 is a plan view and plan view with a part of the sheet cut into strips omitted, Figure 4 is a partially enlarged view of Figure 3, Figure 5 is an explanatory diagram of the grip, and Figure 6 is an enlarged view. Fig. 7 is a partially omitted side view of the printing sheet placed on the bed, Fig. 7 is a partially omitted side view of the large printing sheet being punched out, and Fig. 8 is a side view of the large printing sheet when all of it has been processed. FIG. 3 is a side view with some parts omitted. A: Punching section B: Perforation section C: Cutting section l: Large sheet 2.2.2. ...; Printed circuit board 3.3, 3.
......: Unnecessary part 11: Grooved bed 17: Feed screw for lateral movement 23.24: Pin hole puncher 29: Upper blade for cutting 30.
31: Swing arm 33: Lower blade Figure 2 Figure 3

Claims (1)

[Claims] A punching process in which a large sheet in which printed circuit boards, etc. are regularly arranged in the vertical and horizontal directions is held, moved horizontally by a predetermined pitch, and unnecessary portions are punched out, leaving connecting portions that connect the respective printed circuit boards in sequence. a punching means for punching positioning pin holes at both ends of the punched row; and a cutting means for laterally cutting only the row with positioning pin holes punched at both ends. A precision processing machine characterized by: