CN103008687A - Turning forming method for soft solder welding wire - Google Patents

Abstract

The invention discloses a turning forming method which comprises the following steps of: fixing a wire passing pulley and a wire wrapping disk on a lathe body of a lathe and forming a wire passing through hole on a tool body of a turning tool arranged on a turning tool frame; fixing a solder ingot by a chuck and setting an initial feed according to the design size of a welding wire; moving the turning tool to left at a low rotating speed, cutting the soft solder welding wire with a certain length, enabling the end head of the soft solder welding wire to pass through the wire passing through hole of the tool body and fixing the soft solder welding wire on the wire wrapping disk through the wire passing pulley; and starting the lathe, enabling the turning tool frame to drive the turning tool and the wire passing pulley to reciprocate along a designed running track, and enabling the wire wrapping disk to rotate to drive the cut-out soft solder welding wire to be extruded into a round-section welding wire in the wire passing through hole and then winding the round-section welding wire on the wire wrapping disk. The turning forming method has the advantages of avoiding the problems of multiple processes and complex equipment of a conventional process for manufacturing the soft solder welding wire, utilizing an existing lathe to carry out one-step turning processing on a soft solder with good plastic to form the round-section welding wire which accords with the requirements, improving production efficiency and providing a novel method for processing the soft solder welding wire.

Description

Turning forming method of soft solder wire

technical field

The invention relates to a forming method of welding wire, in particular to a turning forming method of solder welding wire.

Background technique

Solder is the most widely used connecting material in electronic packaging, and solder wire is one of its commonly used forms. At present, the solder wire is mainly formed by extruding, drawing, and wire-drawing. The process is relatively complicated, the processing efficiency is low, and the wire is prone to breakage. Therefore, it is necessary to develop a simpler and more efficient forming process to produce solder wire. Since solder generally has good plasticity, you can try to obtain a certain section of welding wire by cutting, and can be further processed into the required shape of welding wire.

Contents of the invention

The object of the present invention is to provide a turning forming method for directly processing solder ingot into welding wire.

To achieve the above object, the present invention can take the following technical solutions:

In the turning forming method of solder wire of the present invention, a numerically controlled lathe is selected as the cutting equipment, and a threading pulley and a wire winding disc are fixed on the bed body of the numerically controlled lathe, and the wire winding disc is connected to the tool rest of the lathe by transmission. , the wire passing pulley moves synchronously with the turning tool holder of the lathe; the turning tool body installed on the turning tool holder is provided with a wire passing hole near the cutting edge; the solder ingot is fixed with a chuck, and the turning tool is adjusted Position the tool holder so that the right edge of the solder ingot is parallel to the left edge of the turning tool, and set the initial feed rate according to the design size of the welding wire; start the lathe, move the turning tool to the left slowly at a lower speed, and cut out a certain length After the solder wire is cut out, the lathe stops, and the end of the cut solder wire is passed through the wire passing hole on the cutter body, and fixed on the wire coil through the wire pulley; start the lathe, and control the turning tool holder Drive the turning tool and the wire passing pulley to reciprocate along the designed running track, rotate the wire coil, and drive the cut solder wire to be extruded into a circular cross-section welding wire that meets the requirements in the wire passing hole and then wound on the wire coil on the plate.

The entrance of the wire passing hole opened on the turning tool body has a bell mouth structure with a large top and a small bottom.

The turning tool body has three cutting edges, two main cutting edges are parallel to each other and perpendicular to the secondary cutting edge, and can cut in three directions to realize continuous cutting of brazing filler metal.

One side baffle plate of the wire reel is movably fitted on the central shaft to adapt to solder ingots of different lengths.

The running track of the turning tool holder is a square waveform, and the position where the running direction turns 90 degrees has a transition fillet to avoid wire breakage during cutting.

The invention has the advantages of avoiding the problems of many procedures and complicated equipment in the traditional process of manufacturing solder wire, and using the existing lathe to process the solder wire with good plasticity at one time to produce a circular cross-section wire that meets the requirements, which solves the problem of drawing The problems of complex equipment, many processes, and low efficiency for preparing welding wire by methods such as this greatly improve production efficiency and provide a new method for processing and forming solder wire.

Description of drawings

Fig. 1 is the structural representation of lathe used in the present invention.

Fig. 2 is a schematic diagram of the welding wire turning operation of the present invention.

Fig. 3 is a structural schematic diagram of the turning tool body of the present invention.

Detailed ways

As shown in Figures 1, 2, and 3, the turning forming method of solder welding wire according to the present invention selects a numerically controlled lathe 1 as a cutting device, and fixes a line pulley 2 and a wire coil 3 on the bed body of the numerically controlled lathe 1 , the winding wire reel 3 is connected with the tool rest of the lathe, that is, the transmission power comes from the tool rest; the wire passing pulley 2 moves synchronously with the tool rest 4 of the lathe (it can also be directly installed on the tool rest 4); The turning tool body 5 on the turning tool holder 4 is provided with a wire passing hole 6 near the cutting edge (the inner diameter of the passing wire passing hole 6 is compatible with the outer diameter of the obtained finished product circular section welding wire); Ingot 7 is fixed with chuck 8, adjusts the position of turning tool rest 4, makes the right edge of solder casting ingot 7 and the left edge of turning tool cutter body 5 parallel, and sets the initial feed rate according to the design size of welding wire; Slowly move the turning tool body 5 to the left at a lower speed, and after cutting out a certain length of solder wire, the lathe pauses, and passes the end of the cut out solder wire through the wire passing on the tool body 5. Pass through the hole 6, pass the wire pulley 2 and fix it on the wire winding disk 3; start the lathe, control the turning tool holder 4 to drive the turning tool body 5 and the wire passing pulley 2 to reciprocate along the designed running track, and the wire winding disk 3 Rotate to drive the cut solder wire to be extruded into a circular cross-section welding wire 9 that meets the requirements in the wire passing hole 6 and then wound on the wire winding disc 3 .

In order to facilitate the solder wire to enter the wire passing hole 6, the entrance of the wire passing hole 6 provided on the turning tool body 5 is a bell mouth structure with a large upper part and a smaller lower part.

The turning tool body 5 is improved and has three cutting edges, two main cutting edges 11 are parallel to each other, and are perpendicular to the minor cutting edge 12, which can cut in three directions and realize the continuous cutting of solder.

In order to adapt to solder ingots of different lengths, one side baffle plate 10 of the wire reel 3 is movably fitted on the central axis, and can move left and right along the central axis.

The running track of the turning tool holder 4 is a square waveform of reciprocating motion, and there is a transition fillet at the position where the running direction turns 90 degrees, so as to avoid breaking the wire during the cutting process.

Claims (5)

1. A turning forming method of solder wire, characterized in that: a numerically controlled lathe (1) is selected as a cutting device, and a wire pulley (2) and a wire coil (3) are fixed on the bed of the numerically controlled lathe (1) ), the wire winding disc (3) is connected to the tool holder of the lathe, and the wire passing pulley (2) moves synchronously with the tool holder (4) of the lathe; the lathe installed on the tool holder (4) A thread through hole (6) is opened on the cutter body (5) close to the cutting edge; fix the solder ingot (7) with a chuck (8), adjust the position of the turning tool holder (4), and make the solder cast The right edge of the ingot (7) is parallel to the left edge of the turning tool body (5), and the initial feed rate is set according to the design size of the welding wire; start the lathe, and slowly move the turning tool body (5) to the left at a low speed , after cutting out a certain length of solder wire, the lathe stops, and the end of the cut solder wire is passed through the wire through hole (6) on the cutter body (5), and passes through the wire pulley ( 2) Fix it on the wire winding disk (3); start the lathe, control the turning tool holder (4) to drive the turning tool body (5) and the wire passing pulley (2) to reciprocate along the designed running track, and the wire winding disk ( 3) Rotate to drive the cut out solder wire to be extruded into a circular cross-section welding wire (9) that meets the requirements in the wire passing hole (6) and then wound on the wire winding disc (3). 2. The turning forming method of solder wire according to claim 1, characterized in that: the entrance of the wire passing hole (6) opened on the turning tool body (5) is large at the top and small at the bottom. Bell mouth structure. 3. The turning forming method of solder wire according to claim 1 or 2, characterized in that: the turning tool body (5) has three cutting edges, the two main cutting edges (11) are parallel to each other, And perpendicular to the secondary cutting edge (12). 4. The turning forming method of solder wire according to claim 1, characterized in that: one side baffle plate (10) of the wire winding disc (3) is movably fitted on the central axis. 5. The turning forming method of solder wire according to claim 1, characterized in that: the running track of the turning tool holder (4) is a square waveform, and there is a transition round corner at the position where the turning direction of the running direction occurs at 90 degrees .

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