JPS61103623A - Bending method in plating work - Google Patents

Abstract

PURPOSE:To improve a work efficiency by forming a projecting part on the component to be made a plating, by locating with pressing this projecting part to the side face of a die and by performing a paralleling. CONSTITUTION:The projecting part 5 of about 2mm diameter and 0.5mm height is formed at the work time in the previous stage on the component 4 to be made a plating in advance. A die 3 is first put in a guide 2 and slid and fitted to about the center of a punch holder 7. a punch 8 is then put in the holder 7 and fitted by a bolt. a bend work is thereafter performed by touching the tip part of the punch 7 to the component 4 with applying a pressure and by applying pressure with pressing the projecting part 5 to the side face of the die 3. The locating and paralleling of the component 4 are simplified and the work efficiency is improved with this method.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bending method in sheet metal processing, in particular to the bending of angled parts.

(Prior Art) In the conventional processing method, the surface 1b is angled with respect to the bending line 1a as shown in FIG. Place the jig 2 with the same angle as the surface 1b on the angled part 1, slide it on the die 3 in the direction of the arrow, and press it against the bank gauge 4 to make the bending line 1a parallel to the die 3 and back After moving the gauge 4 in the direction of the arrow and determining the bending position, the punch 5
Bending was performed by lowering the

(Problems to be Solved by the Invention) However, in the above conventional example, a jig 2 that matches the angle of the component 1 is required to align the bending line 1a, and the jig '2
There are disadvantages in that the manufacturing cost is high, and it takes time to set up the parts 1 and the jig 2 because they are assembled and processed.

(Means for Solving the Problem) The present invention forms a protruding part for positioning and paralleling the bending line on the sheet metal part, presses the protruding part against the side of the die to perform positioning and paralleling, and lowers the punch to bend the part. Features.

(Function) Positioning and parallelization are performed by pressing the protruding part of the sheet metal part against the side of the die.

(Example) The details of the present invention will be explained below with reference to FIGS. 1 to 4. Fig. 1 shows a first view of the bending equipment;
The figure is a plan view, and Figure 3.4 is a side view. In the figure,
Reference numeral 1 denotes a bed of a separate machine body, and a guide 2 for positioning and parallelizing the die 3 is attached to the die 3. The die 3 has a V groove 3a for bending on the upper surface and a groove 3b for positioning and parallelizing on the lower surface. In addition, since both side surfaces serve as reference surfaces for positioning and parallelizing the part 4, ■ The material that is finished to the same dimensions on the left and right sides around the groove 3a is a raw material, and the part 4, which is a hard material with a 45 HRC, has a diameter of 2. Two protrusions 5 with a height O of Im and smm are protruded from the back surface. This protrusion 5 has a V-groove 3a which is oriented when pressed against the side surface of the die 3.
When processing the part 4, the part 4 is simultaneously ejected by an NC punching press so that the center of the part 4 matches the bending position of the part 4. The back gauge 6 is directly attached to the bed of the machine body, and has a protrusion 5 parallel to the guide 2, which serves as a reference when machining general parts that do not require positioning and parallel alignment. The punch holder 7 is directly connected to the head of the machine body, and is fixed so that the punch 8 does not move due to bending pressure during processing.The fixing method is as simple as attaching the punch 8 with a bolt. The groove 7a is cut. In this case, the tip of the punch 8 has a structure in which the center of the groove 3a of the die 3 coincides with the center of the groove 3a of the die 3.The tip of the punch 8 directly contacts the part 4 during bending and applies pressure.The material is the die 3. is the same as

Next, a processing method using the above configuration will be explained.

First, insert the die 3 into the guide 2 and slide it so that it is aligned approximately at the center of the punch holder 7 and attach it.

Next, insert the punch 8 into the punch holder 7 and attach it with a bolt. Then, as shown in FIG. 3, the part 4 is placed on the die 3 and is slid while pressing the protrusion 5 against the side surface of the die. In this case, as shown in Figure 2, move the back gauge 6 backwards so that it does not hit the part 4, and then apply pressure until the tip of the punch contacts the part 4 and the protruding part 4 is fixed. It is pressed against the side surface of the die 3 and further pressure is applied to complete the bending process of the part 4 as shown in FIG.

(Effect of the invention) A protrusion for positioning and paralleling the sheet metal part against the bending line is formed on the sheet metal part, and positioning is performed by pressing the protruding part against the side surface of the die, making it easy to position and align the sheet metal part against the bending line. You can study it. It also reduces dimensional errors.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a plan view, FIGS. 3 and 4 are side views, and FIG. 5 is a perspective view showing a conventional example. 1 Machine bed 2 Guide 3 ゛ Die 4 Part 5 Projection part 6 Back gauge 7 Punch holder 8 Punch No. 5T21

Claims (1)

[Claims] Bending in sheet metal processing characterized by forming a protruding part on the sheet metal part for parallel alignment with the bending line, pressing the protruding part against the side of the die to position it, aligning it parallel, and lowering the punch to bend it. Method.