JPS58165958A - Curved surface sander - Google Patents

Abstract

PURPOSE:To obtain a curved surface sander performing precise copying polishing by applying finish polishing to the curved surface of a work material while absorbing an endless polishing belt to the curved surface of a molded roller and by making the curved surface around the molded roller capable of being generated or modified easily. CONSTITUTION:A polishing belt 61 is absorbed by vacuum to the curved surface 50 formed around a molded roller 47 and is travelled in close contact with it. The polishing belt 61 at the close contact portion is coupled with the curved surface 50 of the molded roller 47 and the curved surface of a work material 65 fed by a feeding belt 4 and a driven feed belt 10 for grinding or finish polishing, thereby precise copying machining can be applied to the work material 65 without nonuniformity. The curved surface 50 of the molded roller 47 can be generated or modified easily by driving a belt between pulleys 25, 42 of a separate system from the polishing belt 61 without removing the molded roller 47.

Description

DETAILED DESCRIPTION OF THE INVENTION The first aspect of the present invention is to apply an endless abrasive belt to a curved surface formed on a processed material such as wood, resin products, metal, etc.
In the curved surface grinding machine that transfers the curved surface of the workpiece and performs grinding and polishing, a forming roller that comes into contact with the curved surface of the workpiece is pivotally supported, and the IJ (1) is fitted into the curved surface of the workpiece together with the abrasive belt. It is characterized by having a plurality of outside air suction holes penetrating through the outer circumferential surface formed with curved surfaces that fit into each other and the abrasive belt being attracted to the outer circumferential surface by the suction holes.

JP-A-58-165958 (2) A second invention of the present invention is such that a desired curved surface can be created or modified on the outer circumferential surface of the forming roller of the first invention while being supported freely in rotation. be.

Conventional curved belt sanders press an endless abrasive belt against the curved surface of the workpiece using a pressing pad that has a curved surface that matches the curved surface of the workpiece in a male-female relationship. Because tension acts in the running direction and width direction, and a restoring action that tries to return to the flat shape occurs, it is difficult to adhere to the curved surface of the pad.Especially when the cross-sectional shape of the curved surface of the workpiece is complex, precise finishing polishing is required. Dull and dull.

Therefore, when the curved surface of the workpiece is complex, several sets of belt polishing devices a-a'' are arranged in parallel as shown in Figure 11, and each polishing device P, S of each of the polishing devices a-a'' is The pressure pads C to c// that press the belt b-bi' are divided so as to share the pressure on the belt, and the first pressure pad C
The abrasive belt b is brought into close contact with the seventh curved surface e, which is a part of the processed curved surface of the workpiece d, and the abrasive belt b' is brought into close contact with the first curved surface e' through the second pressing pad c'G. 3 pressure pad C'' (more polished
The polishing finish was applied by dividing 1: to ensure close contact with the surface. For this reason, for example, three polishing devices are required, which not only increases the size of the curved surface sander and occupies a huge amount of factory space, but also requires each pressure pad to be divided into multiple pieces. / is stationary, and the polishing belts b - d' of each polishing device must be brought into contact with each surface of the belt and run at a relatively high speed, and each pad C ~ ♂' must be arranged in parallel in the straight line Jj direction. It is necessary to bring the abrasive belt into contact with the transferred workpiece with equal pressure, but this adjustment is difficult in actual work, and naturally there are many areas where the material and the abrasive belt do not come into close contact. Causes uneven polishing. In this case, it is possible to use a vacuum suction device for each pressure pad, but since each pressure pad is stationary as described above and the abrasive belt is moving,
Although a certain degree of adhesion effect was observed, it was far from complete adhesion, and increasing the capacity of the suction device would increase the running resistance of the abrasive belt, increase the horsepower of the belt drive motor, and increase noise. It has defects such as causing SUMMARY OF THE INVENTION An object of the present invention is to overcome these drawbacks and provide a curved belt sander that faithfully copies and polishes the curved surface of a workpiece.

A preferred embodiment of the present invention will be described with reference to FIGS. 3-73.

/ is a lower frame, and a caterpillar (registered trademark) type material feeding belt q that runs with the upper horizontal running portion exposed on the upper surface is hung between the front and rear driving rolls and the driven roll 3. Further, columns S, S are erected on the right side of the material feed belt of the lower frame l, and support arms 4, 4 that protrude to the upper part of the material feed belt q are attached to each column in the left-right direction by the handle 4a. -L is freely provided for small movement adjustment to each support arm.
A material feeding frame 7 screwed with a lifting screw rSg in the -l 1-' direction on the side is attached, and the driven material feeding frame 7 corresponding to the upper side of the material feeding peltry is attached to the guide rollers 9.9 at the front and rear of the frame 7. Hang the belt io and attach it to the handle ll.

Adjust the vertical position of the material feeding frame 7. In addition, a ruler Q parallel to the running direction of the material conveying belt q is placed on the frame l of the side part.
i- is attached so that the ruler plate can be finely adjusted in the left and right direction using the handle /l.

A recessed surface tu is provided on the right side of Fig. S surrounded on three sides by the support belts S and S of the lower frame l and the material conveying belt q, and the substrate 2- of the grinding and polishing device 21 of the present invention is attached here. .

The board 22 protrudes to the right side of the lower frame L as shown in the figure, and a motor 2μ is mounted on the bottom surface of the right end of the board 22.
and connect the motor flaket 23 with the first pulley 23 connected to the main shaft of the motor and the polishing heald roller O attached to the upper surface thereof. In addition, a sliding rod 27 (see Fig. 6.10) is fitted on the left side t surface of the board 22 so that it can slide freely, and a pair of sliding rods 27 (see Fig. 6.10) are fitted in the front and rear to the connecting plate 2g at the front end of each sliding rod. The support shafts 29 forming the shape are passed through so as to be movable in the downward direction, and the insertion support plate 30 of the molded P, 90-ra bearing shaft 3t is attached to one end of each support shaft 29. Cushion springs 3/32 wound around the lower and upper surfaces of the connecting plate 21r act on the connecting plate 29. 33 is the board 2
A connecting bar 3 which is a cylinder mounted on λ and which connects a piston rod 3Il protruding to the left side to a sliding rod 7.
5, and the insertion support plate 30 is moved from side to side in FIG. 3 by expansion and contraction of the piston rod 31.

As shown in an enlarged view in FIG. 7, a hollow forming roller bearing shaft 36 is inserted into the insertion support plate 30 so as to be able to move slightly in the vertical direction to support the collar 37. A large number of second suction holes and IR are provided on the outer periphery, and at the lower end of the front support plate 30,
A suction hose 39 connected to a vacuum pump or the like is fitted. Further, a first pulley II2 corresponding to the first pulley P and L is provided around the upper part of the U-holding plate 30 of the bearing shaft 36, and an inner ring roller having a mounting plate &/or formed at one end thereof is provided. bearing go 4i9s
A large number of first suction holes II3 are provided on the circumferential surface of the roller go.

DaS is an outer ring roller that is detachably fitted to the inner roller UO, and the forming roller μ7 is made of a material that can be easily cut and formed, such as wood, rubber, resin, or light metal, on its outer periphery.
The forming roller q7 and the outer roller aS are fixed with adhesive or fitted so that they can move up and down to some extent, and outside air suction holes uy in the radial direction are provided in the forming roller q7 and the outer roller aS to communicate the inside and the outside.
It is also formed in multiple stages in the downward direction. Forming roller q7
The outer ring roller US, which is provided on the outer periphery, is the inner ring roller ti.

The anti-slip plate 16 on the top surface is fixed to the mounting plate 1 with screws q9. It is also possible to provide unevenness for the d-eye.

The endless abrasive belt 61 is connected to the abrasive belt hanging row 526 and the substrate.
The arm is pivotally supported with respect to λ, and is stretched between a tension roller SS having a tension spring S6 applied thereto, and a forming roller V7, and the outer peripheral surface of the forming roller II7 has a curved surface 66 formed on the workpiece 4'j. A curved surface 50, which is matched in terms of unevenness, is shaped on the outer circumferential surface, and the abrasive belt 4/ is pushed by the curved surface SO to fit the curved surface 66 of the workpiece 6S into the curved surface 66 as shown in the figure.

Between the forming roller bearing shaft 3t and the inner roller go, there is a ring-shaped interval (1) in the area excluding the bearing Vψ as shown in Fig. r.
There is also a ring-shaped interval (1) between the outer circumference of the inner roller qo and the inner circumference of the outer roller tis, and the forming roller l
I7 and the outside air suction holes ur around the entire circumference of the outer roller aS are communicated with the suction hose 39 via the forming roller bearing shaft 36.

Therefore, since the polishing belt 61 only touches about half the circumference of the curved surface so on the outer periphery of the forming roller μ7, the outside air suction hole 4f
ff also wastefully suctions outside air from the non-contact portions of the polishing belt 61. Such a defect can be eliminated by the configuration shown in FIG.

That is, on the outer periphery of the forming roller bearing shaft 36, there is a ring-shaped interval (
1) A wear-resistant flexible blade S/ is installed between the bearings tIIStItI of "-F" to separate the left side where the abrasive belt 61 contacts and the right side where the abrasive belt 61 does not come into contact with each other. Several axial partition walls S2 protruding from the inner roller tio or the outer roller ψS are provided, and the outside air suction holes at are provided only on the no side of the wear-resistant flexible blades S, so that the abrasive belt 61 has a curved surface 50P, / Wasteful vacuum suction is eliminated by not suctioning outside air as much as possible from parts other than those in contact with J.

Ordinary 6i1F is used for the first pulley j and the λ-th pulley μ.
Do not wear a belt in case of friction.

This embodiment also includes a device for creating and modifying the curved surface of the outer peripheral surface of the forming roller 4i7. The creation or modification is performed by moving the outer roller IIS on the inner periphery of the forming roller q7 to the forming roller bearing shaft 36.
The dresser 71 is brought into contact with the outer periphery of the forming roller rift while the outer periphery of the forming roller rift is fitted onto the freely rotatable inner roller 410 and fixed as described above. Dresser 71 is processed material 6s
This dresser 7 consists of a bracket with a molded blade 72 attached that matches the curved surface 6 (Fig. 11).
73 A rotating body 7L having a rotating shaft 73 at the center as shown in FIG.
It is also possible to provide a plurality of sheets protruding from the circumferential surface of P, i. When the dresser 71 is a single-blade blade plate as shown in FIG. 11 of the first OS, the material conveying belt q is stopped and fixed to the upper surface of the belt q and the upper surface of the lower frame l with screws. When several dressers 71 are attached to the rotating body 7q that rotates around the rotating shaft 73, the supporting bracket 7j of the rotating shaft 73 is attached as shown in Fig. 12.73.
The material feed peltry that has been stopped is fixed by screws on the upper surface of the lower frame l, and a motor l for driving the rotating shaft 73 is attached to the support bracket 7S. In this case, the polishing belt 61 is removed and the belt 7 is placed on the 11th coboolee S, λ6.

To explain the curved surface polishing action of the present invention, the interval between the material feeding belt q and the driven material feeding belt io is as shown in the figure. By starting the motor J41, the curved surface S of the outer peripheral surface of the forming roller q7 is applied to the abrasive belt tl.
The workpiece 6S is caused to travel in contact with the point O, and the vacuum pump connected to the suction hose 39 is driven, and the curved surface 66 of the workpiece 6S is brought into contact with the ruler plate lλ and sent onto the material conveying belt q. On the other hand,
The polishing belt 61 has a curved surface SO on the outer peripheral surface of the forming roller rift.
The width direction portion of the running portion in contact with is bent by the curved surface so, and is sucked by the negative pressure of the outside air suction hole air, and runs while closely contacting the curved surface SO, to which the material feeding belt q and the driven material feeding belt io Since the workpiece 6S, which is clamped by the handles, is fed along the ruler plate lλ, the polishing belt 4/ has the curved surface of the workpiece 6B! It fits into the curved surface while remaining in close contact with the #0 spring roll material, and the curved surface 66 is evenly polished due to the speed difference between the #spring roll material and the polishing belt 61. At this time, the cylinder 33 pushes the forming roller bearing shaft 36 toward the curved side surface of the workpiece 65 through the sliding rod 7 and the insertion support plate 30, thereby preventing the forming roller tI7 and the abrasive belt 6/ from coming into contact with the curved surface 66. Assist by pressing.

To create the curved surface SO on the outer circumferential surface of the forming roller q7 or to perform correction polishing on the curved surface, as described above, remove the polishing belt ≦7, and remove the first pulley 2S and second pulley q2. A belt 77 is applied to the belt 77 as shown in FIG. belt 77 and second
The forming roller 417 is rotated as described above via the pulley Ua, and the curved surface 66 is further polished by the cylinder 33.
/7 Press the forming roller q7 to contact the dresser 71 in the same way as when grinding. At that time, the forming roller t7 is moved by the motor 2.
4I, the dresser 71 remains stationary,
Alternatively, the outer peripheral surface is shaved and shaped by the dresser 71 and the rotating body 7q which is rotated by another motor in the opposite direction to the forming roller LI7.

In the seventh aspect of the present invention, the abrasive belt 6/ is run in close contact with the curved surface SO formed on the outer circumferential surface of the only forming roller rift by vacuum suction, and the abrasive belt 6/ in the contact portion is formed. Grinding or abrasive finishing is performed by fitting the curved surface SO of the roller rift to the curved surface of the processed material 6S to be fed, and the curved surface S of the outer peripheral surface of the molding roller q7
By simply forming O precisely to match the curved surface 66 of the workpiece 6S, the workpiece 6S can be processed without uneven grinding by the outside air suction action of the lP, /1 type roller radar 7.

In addition, the first invention provides a belt 77 which is applied only when forming the outer circumferential surface of the roller q7 with a system other than the abrasive belt 6, for example, the 11th Koburiko S1, without removing the forming roller q7. etc. and a dresser 71 to easily create or modify the curved surface SO on the outer circumferential surface of the forming roller q7, increasing the functions of the curved surface sanding machine of the seventh invention, and improving the functions of the sanding machine. Easy to use0

[Brief explanation of the drawing]

Fig. 1 is a plan view of the conventional device, Fig. 2 is an explanatory diagram of the conventional device with the side cut away, Figs. 3 to 73 are side views, and Fig. 5
The figure is a front view, Fig. 6 is a partially enlarged cutaway front view, Fig. 7 is a partially enlarged cutaway longitudinal section + E side view, and Fig. r is Fig. 7A.
-A line cut plan view, Fig. 9 is a plan view of another embodiment cut in the same manner as Fig. 5, Fig. 10 is a cutaway front view when using a dresser, and Fig. 1/Fig. is a single plate dresser. FIG. 12 is a plan view of the rotary dresser, and FIG. 13 is a partially cutaway front view of the rotary dresser. q→material feeding belt, lO→driven material feeding belt, J/-→fl
f polishing device, 2s→motor, 25→first pulley, 26
→ Abrasive belt hanging roller, -7 → Sliding rod, 33 → Cylinder, 36 → Forming roller bearing shaft, 3 → Suction hose, Rico → No. λ pulley, q7 → Forming roller, ur → Outside air suction hole, SO
→ curved surface/- wear-resistant flexible blade, S2 → bulkhead, 4/→ abrasive belt, 6S → processed material, 66 → curved, ? /-) Dresser, 77 → Belt Applicant Takekawa Iron Works Co., Ltd. Figure 1 Stone 2N \ 5th: 1

Claims (1)

[Scope of Claims] (1) While an endless abrasive belt is brought into contact with the curved surface formed on the workpiece, the curved surface of the workpiece is transferred and the grinding distance I-
In a curved surface grinding machine for grinding, a forming roller that comes into contact with the curved surface of the workpiece is pivotally supported, and the grinding roller has an outer circumferential surface formed with a curved surface that fits and matches the abrasive belt in the curved surface of the material. 1. A curved belt sander machine, characterized in that a plurality of outside air suction holes are provided through the inside, and a curved abrasive belt is attracted to the outer peripheral surface by the suction holes. (g) Apply an endless abrasive belt to the curved surface formed on the processed material.
In a curved surface grinding machine that transfers the curved surface of the workpiece to perform grinding and polishing while performing R&B, a forming roller that comes into contact with the curved surface of the workpiece is pivotally supported, and the roller has an abrasive belt attached to the curved surface of the workpiece. A plurality of outside air suction holes are provided that penetrate through the outer circumferential surface formed with a curved surface that fits and matches the inner circumferential surface, and the abrasive belt is attracted to the outer circumferential surface by the suction holes, and the abrasive belt is attached to the forming roller. A separate drive system for removing and rotating the belt is provided, and a dresser equipped with a forming blade that matches the curved surface of the workpiece is brought into contact with the outer circumferential surface of the forming roller to shape the curved surface on the outer circumferential surface. Curved surface sander machine. (3) A patent claim characterized in that the rotary molding roller is supported so as to rotate freely around the support shaft, and the outside air suction holes are configured to generate a suction action within a rotational range of approximately half the circumference in contact with the abrasive belt. Curved belt sander machine described in item 1. P, 3 (Lll) The curved belt sander according to claims 1 and 2, wherein the rotary molding roller is made of an easily cutable material such as wood, rubber, resin, or light metal.