JPH0536187B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for cutting ends of pins, lead wires, etc.

Structure of the conventional example and its problems As shown in FIG. 1, the conventional cutting device holds the outer periphery 3 of the product 2 with the chuck 1, and rotates the cutter 4 to move it in the horizontal direction. , was for cutting the pin 5 of the product 2. In such a configuration, since the product 2 is held only by the force of the chuck 1, the product 2 moves in the circumferential direction 6 due to the cutting force in the horizontal direction. Therefore, in order to cut with the pin 5 tilted,
There was a problem that the lengths of pins 5 were uneven. In addition, since the cutting method is to move the cutter 4 in the horizontal direction, if the depth of cut of the pin 5 is too large, the pin 5 will bend in the horizontal direction Y. It is necessary to cut the parts separately, which takes a long time, and
The work efficiency was poor.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and relates to a cutting device that can sufficiently cope with variations in the size of product bodies.

Structure of the Invention The present invention provides a cutting device for cutting the end of a pin provided on the upper surface side of a product, in which a holding plate is provided with a plurality of guide holes for the pin, each having a tapered entrance and a straight exit. a slide shaft that presses the holding plate against the top surface of the product; a grindstone that cuts the pin; a drive source that fixes the grindstone coaxially and rotates the grindstone; and a drive source that rotates the drive source and the slide shaft up and down. Consisting of a sliding body that can be slid in the direction and a stopper that can adjust the stopping position of the grindstone relative to the holding plate, it can prevent the pin from falling and bending, and can cut in a short time even if the pin has a large depth of cut. can do.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. In the figure, 7 is the product, 8
are multiple pins at one end of product 7, 9 is product 7
11 is a guide hole formed with a tapered entrance 12 and a straight exit 13; 14 is a plurality of guide holes 11;
The retaining plate 15 has one end connected to the retaining plate 14,
Slide shaft fixed with bolt 16a, 16b
is a seat plate that holds the compression spring 17, 18 and 19 are bearings that guide the slide shaft 15, and 20 is the bearing 1.
8, 19 and housing with built-in pin 21, 22
24 has a hole 23 that engages the pin 21 at one end and has the other end fixed to the slide shaft 15;
Bracket with built-in stopper bolt 25, 2
6 is a bolt for fastening the bracket 24 to the motor base 27, and 28 is a bolt 29 for fastening the motor base 27 to the motor base 27.
The sliding body 30 and 31 are fixed through the sliding body 2.
8 is a built-in bearing, 32 is a pin that contacts the stopper 33 and is fixed to the sliding body 28, and 34 is a bearing 3.
35 is a bracket that fixes the shaft 34, 36 is a bolt that fixes the shaft 34,
37 is a plate fixed to the sliding body 28, 38 is a compression spring, 39 is a spacer, 40 is a spacer, 41 is a spacer 4
A retaining ring that holds 0 in the axial direction, 42 is the plate 3
7 is a collar that stops in the axial direction, 43 is a collar 4
A bolt fixing 2 to the shaft 44, 45 a bearing, 46
numeral 47 is a housing which incorporates a bearing 45 and guides the shaft 44; numeral 47 is a block having one end fixed to the housing 46 and a stopper 33 and a bracket 35 fixed to the other end. 48 is a cutter made of a whetstone,
49 is a seat for fixing the cutter 48 to the holding shaft 51 via the intermediate shaft 50; 52 is a nut for fastening the seat;
53 is a key that transmits the rotational direction of the intermediate shaft 50 and the holding shaft 51; 54 is a bolt that fixes the key; 55
56 is a balancer that balances the rotation, 56 is a nut that prevents the screw of the holding shaft 51 from loosening, and 57 is a
It's a motor. When the shaft 44 is moved in the direction of the arrow X, the plate 37, the sliding body 28, and the motor base 2
7. The cutter 48 also starts moving in the X direction. First, the pin 8 of the product 7 is guided by the taper 12 of the holding plate 11 until it reaches the upper surface 58, and the upper surface 58 of the product 7 is horizontally positioned by the lower surface of the holding plate 14. Next, after the holding plate 14 reaches the top surface of the product 7, when it moves further in the X direction, the gap A disappears, and one end of the slide shaft 15 comes into contact with the stopper bolt 25, and the cutter 48 is moved from the top surface 58 of the product 7. The dimension B to the bottom surface, that is, the cut length of the pin 8 is regulated, and the sliding body 2
The movement of 8 stops. At this time, the cutter is rotated by rotating the motor 57 and moved in the X direction to cut the pin 8. Since the upper and lower parts of the holding plate 14 and the cutter 48 operate independently via the compression springs 17, the pin 8 is first held by the guide hole 11 of the holding plate and then cut, so the pin 2 does not bend. Since the cutter 48 stops at a constant height, there is no misalignment of the pins 8. In addition, since the upper surface of the product 7 is held down by the holding plate 14, even if the product is tilted, it can be leveled and the product 7 can be leveled.
Even if there is a gap with the chuck 9 due to the small diameter of the pin 8, it can always be leveled, making it stable.
Can cut to length. Furthermore, since the cutting amount increases as the cutter 48 gradually moves from above in the X direction, the cutting can be completed with one downward movement of the cutter 48. At this time, the height of the cutter can be kept constant by adjusting the gaps C and D so that they do not become zero.

Effects of the Invention As described above, in the present invention, since the pin is completely supported and cut in the guide hole that guides the pin, there is no bending of the pin, and the cut along the length of the pin is made by cutting from the length direction. Because of this, the process can be completed with one movement of the cutter, resulting in a short processing time. In addition, since the top surface of the product is directly pressed, even if the product is not in a horizontal position, the product is automatically positioned. It also has the feature that even if there is some play in the chuck due to variations in the diameter of the product, the pin can be regulated using the horizontal holding plate.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional cutting device, FIG. 2 is a cross-sectional view of a cutting device according to an embodiment of the present invention, and FIG.
The figure is an enlarged sectional view of the main part, and FIG. 4 is a front view of the cutting device. 5, 8...pin, 12...taper, 13...
Straight, 11... Guide hole, 14... Holding plate, 2, 7... Product, 58... Top surface, 48... Cutter, 15... Slide shaft, 57... Drive source (motor), 28... Sliding Moving object, 25...stopper.

Claims (1)

[Claims] 1. A cutting device for cutting the end of a pin provided on the top side of a product, which includes a holding plate with a plurality of guide holes for the pin, each having a tapered entrance and a straight exit; A slide shaft that presses against the top surface of the product, a grindstone that cuts the pin, a drive source that fixes the grindstone coaxially and rotationally drives the grindstone, and allows the drive source and the slide shaft to slide in the vertical direction. A cutting device comprising a sliding body and a stopper that allows adjustment of the stopping position of the grindstone relative to the holding plate.