JPH0323023A - Assembly parts manufacturing method and assembly parts - Google Patents

Abstract

PURPOSE:To prevent defect of the inserting part by punching a base material in which one plat member is connected with other plate members, fitting the base material with plural plate members and cutting the connecting part form the base material after inserting. CONSTITUTION:Plural plate members 12, 14, 16 is provided with respective inserting parts 18, 20, 24, 26 and one plate member 12 is formed by punching the base material 36 formed by connecting the member 12 at least with the other plate 14, 16 through the connecting parts 32, 34 from one plate material 22. The base material 36 is bent at the connecting parts 32, 34 and the inserting parts 18, 20, 24, 26 of plate members 12, 14, 16 are inserted mutually. After plate members 12, 14, 16 are inserted, the connecting parts 32, 34 are cut from the base material 36. Therefore the quality control is easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing assembled parts and to assembled parts. (Prior art) Figure 5 shows an example of assembled parts. This assembly part 10 is C
This is the yoke of the D player's optical pickup, and requires high assembly precision. The assembly part IO consists of a first member l2, a second member 14, and a third member l6, which are plate-like members, all of which have the same thickness.

The upper ends of the second member l4 and the third member l6 are fitted into fitting tags l8 and 20 provided transparently in the center of the first member 10, and are fixed by caulking. A conventional manufacturing method for assembled parts of this type will be explained with reference to FIG. The first member 100, the second member 102, and the third member 10 are preformed as individual parts. and the first member l0
The second member 102 is inserted into the fitting holes 106 and 108 which are transparently provided in the second member 102.
and a fitting protrusion 110 formed at the upper end of the third member 104.
, 112. Then, by caulking the upper end surfaces of the fitting protrusions 110 and 112, the second member 1. 0 2 and the third member 104 are prevented from coming off from the first member 100. (Problems to be Solved by the Invention) However, the above-described conventional method for manufacturing assembled parts has the following problems.

Since the first member, the second member, and the third member are manufactured individually in advance, there will be slight variations in the thickness of each member. Particularly in the case of precision parts, variations in thickness are sometimes disliked, which requires strict quality control, which requires a lot of effort, which in turn worsens economic efficiency. Also, if there are variations in the thickness of each member,
There are cases where the fitting between parts is loose or impossible, and especially when they cannot be fitted, extra machining must be performed on the parts to make them fit. If the fit is loose, it can be fixed by caulking, but there are variations in the thickness of the parts, and for example, when caulking with a certain force using a mechanical device, the caulking strength will vary depending on the assembled parts. Yes. Furthermore, when assembling with a punching device, each component is supplied separately, resulting in a large number of parts and a complex structure of the mechanical device. Further, since each member is manufactured independently before assembly, the material properties of the members to be assembled are different. Therefore, for example, if the coefficient of linear expansion differs depending on each member due to temperature changes, distortion will occur in the assembled parts, and it may not be possible to use them for precision parts. Furthermore, since each member is manufactured independently in advance, there is also the problem that parts management must be performed for each member, which is cumbersome.

Therefore, the present invention provides a method for manufacturing assembled parts that can make the thickness of each plate-like member that makes up an assembled part constant, is suitable for use in precision parts, and can be easily managed, and also provides a method for manufacturing assembled parts using the method. The purpose is to provide high-precision assembled parts. (Means for Solving the Problems) In order to solve the above problems, the present invention has the following features. That is, in a method for manufacturing an assembled part formed by fitting and assembling a plurality of plate-like members having the same thickness, a fitting portion is formed in each of the plate-like members from one plate, and The plate-like member is formed by punching out a base material that is connected to at least one plate-like member via a connecting portion, and the base material is bent at the connecting portion to form a plurality of plate-like members. The manufacturing method is characterized by comprising a step of fitting the fitting portions of the members into each other, and a step of cutting the connecting portion from the base material after the plurality of plate-like members are fitted. The method is characterized by comprising the step of caulking and fixing the fitting parts together before cutting the connecting part from the base material.

(Effect) Explain the effect. Since all the plate-like members are formed from a single plate, the thickness of each plate-like member does not differ. Furthermore, since all the plate-like members are formed from the same plate material, uniform properties of the material can be ensured. Since each member is shaped during the manufacturing process of assembled parts, parts management only needs to be done for the plate materials. Furthermore, when the fitted plate-like members are caulked and fixed, the caulking is performed before cutting the connecting portion, so that the members can be treated as a single part until they are fixed together.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In addition, in this embodiment, the assembly part 10 shown in FIG.
We will explain the method for manufacturing the following, but the method shown in Fig. 5 will be explained.
The corresponding members will be described with the same member numbers as in FIG. 5.

First, as shown in FIG. 1, a plate material 22 having a constant thickness is punched out. Through this punching process,
The first member l2, the second member 14, and the third member 16, which are plate-like members, are shaped. At that time, fitting holes 18 and 20, which are fitting parts, are transparently provided in the center of the first member 12, and the second HHB
The material 14 and the third member 16 are formed with fitting protrusions 24 and 26, which are fitting parts that can be fitted into the fitting holes l8 and 20. At the same time, holes 28 and the like necessary for the assembly part 10 are formed. The first member l2 is connected to the original plate 22 by a connecting piece 30, the second member 14 and the third member 16 are connected by a connecting part 32, and the connecting part 32 is connected to the first member l2 by a connecting part 34. Because they are connected, the first member 12 and the second member 1
4. The third member l6 and the original plate 22 are integrally connected. Note that depending on the assembly machine, the connecting piece 30 may be cut to separate the first member l2, second member l4, and third member l.
6 are integrated through the connecting parts 32 and 34 to form the original plate material 22.
It may be separated from

In this embodiment, the first member 1 separated from the plate material 22 will be described below.
2. Second member 14, third member l6 and connecting parts 32, 34
A method of manufacturing the assembled part 10 by processing a base material 36 consisting of It's the same. After punching is completed, the original plate 2 is cut out as shown in Figure 2.
Portions 38, 4 of the connecting portion 32 of the base material 36 separated from 2
Fold 0 downward. The positions of the bent portions 38 and 40 are determined when the fitting holes 18 and 20 of the first member 12, the second member l4, and the third member 16 are viewed from the plane direction when the plate member 22 is bent. These are the locations that lie on the same straight line in the length direction (arrow 8 directions). Next, as shown in 3E, the connecting portion 34 is bent downward at the portion 42 so that the fitting protrusion 24 of the second member l4 fits into the fitting hole 18.
The fitting protrusion 26 of the third member l6 corresponds to the fitting hole 20. Therefore, the position of the portion 42 where the connecting portion 34 is bent is such that the fitting holes 18, 20 and the fitting protrusions 24, 26 can correspond to each other by bending. And the second
The fitting protrusion 24 of the member 14 is fitted into the fitting hole 18 and the fitting protrusion 26 of the third member 16 is fitted into the fitting hole 20, and the second member 14 and the third member l6 are placed on the bottom surface of the first member 12. Make it perpendicular to the At that time, as shown in FIG.
Notches 44 and 46 are carved in the second member 14.
The strain that occurs when fitting the third member 16 to the first member 12 is absorbed by the notches 44 and 46, so that the second member 14 and the third member l6 are vertically aligned with respect to the first member l2 without being inclined. It is now possible to mate. After the second member 14 and the third member 16 are fitted to the first member 12, the upper end surfaces of the fitting protrusions 24 and 26 protruding toward the upper surface of the first member l2 are struck with a punch (not shown). By tightening the second member l4
and prevents the third member l6 from coming off. Note that this crimping step is not necessary if a retainer is not required or if the fitting force is strong and crimping is not necessary.

When the second member 14 and the third member 16 are fitted and fixed,
As shown in FIG.
Then, the connecting portion 34 is cut from the first member 12. In this embodiment, the connecting portions 32 and 34 are cut after the above-mentioned caulking step. In this case, when caulking the second member l4 and the third member l6 in the processing machine,
Since it can be handled as a single component, it has the advantage of simplifying the structure of the component holding mechanism. After the connecting portions 32 and 34 have been cut, each portion of the first member 12 may be bent as appropriate to form the shape shown in FIG. Note that the base material 36 is attached to the original plate material 22 by the connecting piece 30.
If it remains connected via! & Afterwards, the connecting piece 30 is cut and the assembled part 10 is completed. Various preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-mentioned embodiments. It goes without saying that the invention is not limited to the above-mentioned parts, and many more modifications can be made without departing from the spirit of the invention. (Effects of the Invention) According to the method for manufacturing assembled parts according to the present invention, all the plate-like members are manufactured from one sheet of plate material, so there is no variation in the thickness, and quality control becomes easier. In addition, since there is no variation in thickness, it is possible to prevent defects in the fitting portion, so there is no need for extra processing to correct poor fitting. In addition, since there is no variation in thickness, variations in crimping strength can be prevented even when crimping and fixing with a constant force. In addition, since each plate-like member is formed from a material having uniform properties, it expands and contracts at the same rate even with changes in temperature, so there is no risk of distortion. Furthermore, since each plate-like member is integrated through a connecting part during the manufacturing process, parts can be supplied as a single part, and the structure of the mechanical device can be simplified. Furthermore, since each plate member is manufactured during the manufacturing process, parts management only needs to be done with the plate material, which is technically and economically effective.

[Brief explanation of the drawing]

FIGS. 1 to 4 are perspective views showing the manufacturing process of the assembled parts according to the present invention, FIG. 5 is a perspective view showing an example of the assembled parts,
Figure 6 is a perspective view showing the conventional manufacturing method of assembled parts. IO...assembly part, 12...first member, 14...
・Second member, 16...Third member, 18.20...
- Fitting hole, 22... Plate material, 24.26... Fitting protrusion, 32.34... Connection portion, 36... Base material. 102

Claims (1)

[Claims] 1. In a method for manufacturing an assembled part formed by fitting and assembling a plurality of plate members having the same thickness, from one plate member,
forming a fitting part in each of the plate-like members, and punching out a base material in which one plate-like member is connected to at least one other plate-like member via a connecting part; bending the base material at the connecting portion to fit together the fitting portions of the plurality of plate-like members; and after the plurality of plate-like members are fitted, removing the connecting portion from the base material. A method of manufacturing an assembled part, comprising the step of cutting. 2. The method of manufacturing an assembled part according to claim 1, further comprising the step of caulking and fixing the fitted parts together before cutting the connecting part from the base material. 3. An assembled part manufactured by the manufacturing method according to claim 1 or 2.