JPH07102540B2 - Wooden crate manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a wooden frame used for a timepiece frame, a mirror frame or the like.

[Prior Art] Conventionally, when a three-dimensional shape is formed on a wooden frame such as a clock frame or a mirror frame, the bit position is changed vertically, horizontally, or vertically by using a dedicated NC router for three dimensions, or when there is 3D shape was formed by adding a swinging motion. In addition, the ball bit shown in Fig. 9 is attached to the NC router dedicated to 2D, and one plane machining is performed at one height position, and then another plane machining is performed at another height position. In some cases, the height was changed to form a three-dimensional shape.

[Problems to be solved] However, when using a three-dimensional dedicated NC router, there is a problem that a very expensive capital investment is required and the capital investment cannot be performed when the production quantity of the wooden frame is small.

In addition, when a ball bit is attached to a 2D dedicated NC router, it takes a lot of machining time because the bit moves a lot, and because the vertical movement is not continuous, the machining surface is wavy and the polishing time is long. There is a problem that it takes a lot of width, and when it is cut at the tip of the bit, there is no peripheral speed, so that it is easy to get fluffy and rustle, and in this case, extra polishing time is required.

Therefore, an object of the present invention is to form a three-dimensionally shaped wooden frame easily and in a short time only by moving the router bit two-dimensionally.

[Means for Solving the Problem] In order to achieve the above object, the method for manufacturing a wooden frame of the present invention is to process the wooden frame while moving the router bits two-dimensionally from inside and outside the wooden frame, At this time, by changing the width of the wooden frame, the height of the intersecting position is changed while changing the intersecting position of the surfaces machined by the inner and outer router bits to form a three-dimensional shape in the wooden frame. .

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

In this embodiment, a wooden frame for a wall clock is manufactured.

First, as shown in FIGS. 3 and 4, eight pieces of wood are adhered to form a wooden frame 1 m. Next, as shown in Figure 2, this wooden frame
Glass (not shown) and support plate (not shown) on the bottom of 1m
A groove 1a for mounting the is formed by a predetermined method.

Next, as shown in FIGS. 5 and 6, the inner surface 1b of the wooden frame 1m
Prepare a router bit 2 for processing and a router bit 3 for processing the outer surface 1d of the wooden frame 1m. The shape of the grinding surface 2a of the inner router bit 2 is such that the grinding surface advances outward as it goes upward. Similarly, the shape of the ground surface 3a of the outer router bit 3 also advances toward the outer side as the ground surface goes upward.

Next, the two-dimensional NC router (not shown) stores the loci that the inner and outer processing router bits 2 and 3 should follow in the plane of the table (not shown). At this time, the machined surface of the wooden frame 1m machined on the ground surface 2a of the router bit 2 for inner machining intersects the machined surface of the wooden frame 1m machined on the ground surface 3a of the router bit 3 on the outer machined surface. To form the apex of the mountain, and store it so that the width between the loci traced by the inner working router bit 2 and the outer working router bit 3 changes along the locus line. .

Next, fix the unprocessed wooden frame 1m to the table, and, for example, first attach it to the jig chuck (not shown) of the router bit 2 for internal processing, and follow the stored trajectory line to make the router bit 2 two-dimensional. As shown in FIG. 7, the inner surface 1b of the wooden frame 1m is machined while being moved to form a machined surface 1c.

Next, the inner bit 2 is removed, the outer processing router bit 3 is attached to the jig chuck, and similarly, according to the stored trajectory line, the outer surface 1d of the wooden frame body 1m as shown in FIG. Is processed to form a processed surface 1e. At this time, since the width between the traces traced by the inner router bit 2 and the outer router bit 3 is changed along the trace line, at the place W where the trace width is wide, the machined surfaces 1c and 1e are processed. The intersecting position H between the machining surfaces 1c and 1e becomes low, and the intersecting position L between the machined surfaces 1c and 1e becomes low at the narrow place N between the trajectories.

In the wooden frame 1 shown in FIGS. 1 and 2 processed by the above method, the height L of the wooden frame becomes low at the portion N where the width of the wooden frame is narrow, and the wooden frame 1 at the portion where the width of the wooden frame is wide. The height H becomes high, and the constricted height of the wooden frame becomes a wavy shape, and a beautiful three-dimensional shape can be obtained.

In the above embodiment, the inner working router bit 2 and the outer working router bit 3 have different shapes.
The same bit may be used. Further, in the above-mentioned embodiments, all the bits are shaped so as to advance outward as the grinding surface goes upward, but the router bit 2 for inner working has a shape that goes outward as it goes upward and is used for outer working. The router bit 3 may be shaped so as to advance inward as it goes upward, and may have a gentler angle than the angle of the ground surface of the router bit 2 for internal processing. As a result, the processed surface shape of the wooden frame that has spread outward can be obtained. As described above, various shapes of bits can be considered.

Further, in the above-described embodiment, the machining loci are stored in both the inner working router bit 2 and the outer working router bit 3, but for example, in the case of processing the outer surface 1d of the wooden frame 1m, the chamfering is performed. You may perform it by the cutter processing.

Further, in the above embodiment, a plurality of pieces of wood are laminated to form the unprocessed wooden frame 1 m, but one solid board, particle board or the like may be used.

[Effects] According to the present invention, the router bits that move two-dimensionally from inside and outside of the wooden frame are used while changing the width of the wooden frame. It is possible to manufacture a wooden frame having a three-dimensional shape whose curved surface changes smoothly. Further, since the peripheral speed can be increased by using the forming bit, the surface to be processed becomes more beautiful and the post-official polishing finish becomes easier than when using the ball bit.

[Brief description of drawings]

1 to 8 show an embodiment of the present invention.
Figure and Figure 2 are plan view and A- of the completed wooden frame, respectively.
A sectional view taken along the line A, FIGS. 3 and 4 are plan views of the wooden frame before processing and sectional views taken along the line BB, FIG. 5 is a front view of a router bit for inner working, and FIG. 6 is outer processed. Fig. 7 is a front view of a router bit for a machine, Fig. 7 is a cross-sectional view showing a state in which a wooden frame is being processed by a router bit for internal processing, and Fig. 8 is a wooden frame being processed by a router bit for external processing. FIG. 9 is a sectional view showing a state, FIG. 9 is a front view of a conventional ball bit, and FIG. 10 is a sectional view showing a state in which a wooden frame is processed using the ball bit. 1 …… Wooden frame, 1b …… Inside of wooden frame, 1c …… Surface processed by inner router bit, 1d …… Outside of wooden frame, 1e …… Surface processed by outer router bit, 1m… … Wooden frame before processing, 2,3 …… Router bit, H… High intersection of processing surface, L… Low intersection of processing surface, N… Narrow width of wooden frame, W… Wood A place with a wide frame.

Claims (1)

[Claims] 1. The inside and outside of the crate is processed while the router bit is moved two-dimensionally, and the width of the above crate is changed at this time so that the inside and outside router bits are A method for manufacturing a wooden frame, wherein the height of the intersecting position is changed while changing the intersecting position of the surfaces to be processed to form a three-dimensional shape on the wooden frame.