JPS622941B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A first aspect of the present invention is that a forming roller that guides the abrasive belt in contact with it is pivotally supported at a position where it contacts the workpiece, and matches the curved surface formed on the workpiece in a male-female relationship. In a curved surface grinding machine that performs abrasive grinding of the curved surface of the workpiece by shaping the curved surface onto the outer peripheral surface of the forming roller and fitting the curved surface of the workpiece together with an abrasive belt into the shaped curved surface of the forming roller, the forming roller is provided to freely rotate around a fixed roller bearing shaft, and a large number of outside air suction holes are provided on the outer circumferential surface of the forming roller and penetrate through to the internal holes of the forming roller, and each suction hole is connected to the inside of the forming roller. The polishing belt is characterized in that it communicates with a suction hose through a hole, and the abrasive belt is attracted to the outer circumferential surface of the forming roller by the suction hole.

The second aspect of the present invention is that the abrasive belt sucks in the outside air from the outside air suction holes provided through the internal holes of the forming roller of the first invention only from the outside air suction holes of the forming roller that the abrasive belt runs in contact with. by suctioning the
This makes the adsorption efficiency of the abrasive belt extremely good.

A third aspect 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 aspect while being supported freely in rotation.

(Embodiment) A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 11.

Reference numeral 1 denotes a lower frame, and a Caterpillar (registered trademark) type material conveying belt 4, which runs with the upper horizontal running portion exposed on the upper surface, is wrapped around the front and rear driving rolls 2 and driven rolls 3. Also, lower frame 1
To the right of the material conveying belt 4 in FIG.
5 is erected, and each support arm is provided with support arms 6, 6 that protrude to the upper part of the material conveying belt 4, which can be freely adjusted by a handle 6a for a small amount of movement in the left and right direction. A material feeding frame 7 having lifting screws 8, 8 screwed together is attached, and a driven material feeding belt 10 corresponding to the upper side of the material feeding belt 4 is wrapped around the guide rollers 9, 9 at the front and rear of the frame 7. The vertical position of the material feeding frame 7 is adjusted using the handle 11. Further, a ruler plate 12 parallel to the running direction of the material conveying belt 4 is mounted on the lower frame 1, and the ruler plate can be finely adjusted in the left-right direction using a handle 11.

A recessed surface 14 is provided on the right side in FIG. 3, surrounded on three sides by the support belts 5 and 4 of the lower frame 1, and the substrate 22 of the grinding and polishing apparatus 21 of the present invention is mounted here. The substrate 22 protrudes from the right side of the lower frame 1 as shown in the figure, and
A motor bracket 23 is connected to the right end thereof, on which a motor 24 is mounted on the lower surface, and a first pulley 25 connected to the main shaft of the motor and a polishing belt hanging roller 26 are mounted on the upper surface. Further, sliding rods 27 (see FIGS. 4 and 8) are fitted in parallel to the lower left surface of the board 22 so as to be freely slidable, and connecting plates 28 at the front ends of each sliding rod are fitted.
A pair of front and rear support shafts 29 are inserted through the support shafts 29 so as to be movable in the vertical direction, and a support plate 30 for inserting the forming roller bearing shaft 36 is attached to the upper end of each support shaft 29, and a connecting plate is attached to each support shaft 29. Cushion springs 31 and 32 wound around the lower and upper surfaces of 28 are activated. 33 is a cylinder mounted on the base plate 22, in which a piston rod 34 protruding to the left is fixed to a connecting bar 35 connected to the sliding rod 27, and the expansion and contraction of the piston rod 34 moves the insertion support plate 30 into the first cylinder.
Move the image to the left or right.

As shown in an enlarged view in FIG. 5, 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 38 are provided on the outer periphery of the upper part, and a suction hose 39 connected to a vacuum pump or the like is fitted into the lower end of the support plate 30. Moreover, the receiving shaft 36
A second pulley 42 corresponding to the first pulley is provided around the upper part of the support plate 30, and an inner ring roller 40 having a mounting plate 41 formed at its upper end is fitted through bearings 44, 44. A large number of first suction holes 43 are provided on the circumferential surface.

Reference numeral 45 denotes an outer roller that is detachably fitted to the inner roller 40, and has wood, wood, etc. on its outer periphery.
A forming roller 47 made of a material that can be easily ground and formed, such as rubber, resin, or light metal, is fixed with adhesive or fitted so that it can move up and down to some extent independently, and the forming roller 47 and the outer roller 45 are connected to each other between the inside and outside. The outside air suction holes 48 in the radial direction communicating with each other are formed in multiple stages in the vertical direction as well. The outer roller 45, which has the forming roller 47 on its outer periphery, is similar to the inner roller 40.
The non-slip plate 46 on the top surface is fitted onto the outer periphery of the mounting plate 41.
It is fixed with screws 49,
It is also possible to provide anti-slip irregularities on the upper surface of the mounting plate 41 and the lower surface of the anti-slip plate 46. The outer ring roller 45 operates substantially integrally with the forming roller 47, and its inner peripheral surface serves as an internal hole of the forming roller 47.

The endless abrasive belt 61 is connected to the abrasive belt hanging roller 26
The arm is pivotally supported with respect to the substrate 22, and the tension spring 56 is hung between a tension roller and a forming roller 47.The outer peripheral surface of the forming roller 47 has a curved surface 66 formed on a workpiece 65. The curved surface 50 matched according to the relationship is shaped to the outer peripheral surface, and the curved surface 5
0 to push the abrasive belt 61 and fit it onto the curved surface 66 of the workpiece 65 as shown in FIG.

As shown in FIG. 6, there is a ring-shaped interval between the forming roller bearing shaft 36 and the inner roller 40 except for the bearing 44, and there is also a ring-shaped interval between the outer periphery of the inner roller 40 and the inner periphery of the outer roller 45. There is. The ring-shaped spacing allows the forming roller 47, which is also the internal hole described above, and the outside air suction hole 48 around the entire circumference of the outer roller 45 to communicate with the suction hose 39 via the forming roller bearing shaft 36. For this reason, since the polishing belt 61 contacts only about half the circumference of the curved surface 50 on the outer periphery of the forming roller 47, the outside air suction holes 48 wastefully suck the outside air from the non-contact portions of the polishing belt 61.

Such defects can be eliminated by the arrangement of FIG.
That is, on the outer periphery of the forming roller bearing shaft 36, a wear-resistant flexible blade 51 is installed between the upper and lower bearings 44, 44 to separate the left side, which is in contact with the abrasive belt 61, and the right side, which is not in contact, within a ring-shaped interval. Formed roller bearing shaft 3
6, several axial partition walls 52 are provided inside the ring-shaped gap that protrude from the inner roller 40 or the outer roller 45 and are in contact with the outer wall of the inner hole (ring-shaped gap), and the outside air suction hole 38 is A wear-resistant flexible blade 51 is provided on the bearing shaft 36 as shown in FIG.
Waste of vacuum suction is eliminated by sucking outside air as much as possible from a part other than the part where 1 is in contact with a curved surface 50.

A belt is not applied to the first pulley 25 and the second pulley 42 during normal polishing.

This embodiment also includes a device for creating and modifying the curved surface of the outer peripheral surface of the forming roller 47. This creation or modification is performed by fitting the outer roller 45 on the inner periphery of the forming roller 47 to the freely rotatable inner roller 40 on the outer periphery of the forming roller bearing shaft 36 and fixing it as described above. This is done by touching the dresser 71. The dresser 71 consists of a bracket to which a forming blade 72 that matches the curved surface 66 of the workpiece 65 is attached (FIG. 9).
As shown in FIG. 1, a plurality of plates may be provided protruding from the circumferential surface of a rotating body 74 having a rotating shaft 73 at the center. When the dresser 71 is a single-blade blade plate as shown in FIGS. 8 and 9, the material conveying belt 4 is stopped and fixed to the upper surface of the belt 4 and the upper surface of the lower frame 1 with screws. do. When several dressers 71 are attached to a rotating body 74 that rotates around a rotating shaft 73, the material conveying belt 4 and the lower frame with the support bracket 75 of the rotating shaft 72 stopped as shown in FIGS. 10 and 11. 1, and a motor 76 for driving the rotating shaft 73 is attached to the support bracket 75. In this case, the abrasive belt 61 is removed and the first and second pulleys 25, 2
Hang belt 77 on 6.

To explain the curved surface polishing functions of the first and second aspects of the present invention, the distance between the material feeding belt 4 and the driven material feeding belt 10 forms a curved surface 66 in the feeding direction on the side surface as shown in FIG. The abrasive belt 6 is adjusted according to the thickness of the processed material 65 and the motor 24 is started.
1 is caused to run in contact with the curved surface 50 of the outer peripheral surface of the forming roller 47, and a vacuum pump connected to the suction hose 39 is driven, and the workpiece 65 is moved to the ruler plate 12.
The material is fed onto the material feeding belt 4 by contacting the curved surface 66 of the material. On the other hand, the widthwise portion of the abrasive belt 61 that runs in contact with the curved surface 50 on the outer peripheral surface of the forming roller 47 is bent by the curved surface 50 and is sucked by the negative pressure of the outside air suction hole 48 to form the curved surface 50. The workpiece 65 running in close contact with the ruler plate 12 is sandwiched between the material feed belt 4 and the driven material feed belt 10.
Since the polishing belt 61 is fed along with the curved surface 50 of the workpiece 66, it fits into the curved surface 50 of the workpiece 66 while remaining in close contact with the curved surface 50, and the curved surface 66 is evenly polished due to the speed difference between the workpiece 65 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 62 via the sliding rod 27 and the insertion support plate 30, and the forming roller 4
7 and the abrasive belt 61 in contact with the curved surface 66 by pressing.

In order to create the curved surface 50 on the outer peripheral surface of the forming roller 47 according to the third invention or to perform correction polishing of the curved surface, the polishing belt 61 is removed as described above, and the first
A belt 77 is applied to the pulley 25 and the second pulley 42 as shown in FIG. The first pulley 25 and belt 77 are driven
The forming roller 47 is rotated as described above via the second pulley 42, and the forming roller 47 is further pushed by the cylinder 33 to contact the dresser 71 in the same manner as when polishing the curved surface 66. At that time, the forming roller 47 is rotated by the motor 24,
The outer peripheral surface of the dresser 71 is shaped while it remains stationary, or by the dresser 71 and a rotating body 74 rotated in the opposite direction to the forming roller 47 by another motor.

(Operations and Effects) The first aspect of the present invention is that only one forming roller 4
The abrasive belt 61 is run in close contact with the curved surface 50 formed on the outer circumferential surface of the workpiece 7 by vacuum suction, and the abrasive belt 61 in this close contact portion is moved between the curved surface 50 of the forming roller 47 and the workpiece 65 to be fed. Grinding or abrasive finishing is performed by fitting into a curved surface, and by simply forming the curved surface 50 on the outer peripheral surface of the forming roller 47 precisely to match the curved surface 66 of the workpiece 65, temporary precision processing can be achieved. This has the effect that the workpiece 65 can be processed without uneven grinding due to the outside air suction action of the forming roller 47.

In addition, the second invention is such that the abrasive belt is in contact with the inner circumferential surface of the internal hole of the outside air suction hole provided in the forming roller, and the abrasive belt is in contact with the internal hole of the forming roller in a range where it is in contact with the outer circumferential surface of the forming roller. Due to the structure in which flexible vanes connected to the hose protrude from the forming roller bearing shaft, there is hardly any outside air suction other than that required for suction of the abrasive belt from the forming roller, and the adsorption of the abrasive belt to the forming roller is made more efficient. It has a good effect.

In addition, the third aspect of the present invention allows the forming roller 47 to be connected to the first and second pulleys 25, 42 of a system other than the abrasive belt 61, for example, without removing the forming roller 47.
The curved surface sander of the first invention is provided with a drive system such as a belt 77 and a dresser 71 which are applied only when forming the outer circumferential surface of the forming roller 47, and to easily create or modify the curved surface 50 of the outer circumferential surface of the forming roller 47. This has the effect of increasing the functions of the sander and making it easier to use the sander.

[Brief explanation of the drawing]

1 to 11 show embodiments of the present invention, FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a front view with a partially enlarged cutaway, and FIG. Figure 6 is a partially enlarged cutaway longitudinal sectional view, and Figure 5 is a diagram showing A-A.
7 is a plan view of another embodiment cut in the same way as FIG. 6, FIG. 8 is a cutaway front view when a dresser is used, and FIG. 9 is a perspective view of a single-plate dresser. , FIG. 10 is a plan view of the rotary dresser, and FIG. 11 is a partially cutaway front view of the same. 4 → Material feeding belt, 10 → Driven material feeding belt, 21
→ Grinding and polishing device, 24 → Motor, 25 → First pulley, 26 → Grinding belt hanging roller, 27 → Sliding rod,
33 → cylinder, 36 → forming roller bearing shaft, 39 →
Suction hose, 42 → second pulley, 47 → forming roller, 48 → outside air suction hole, 50 → curved surface, 51 → wear-resistant flexible blade, 52 → partition wall, 61 → abrasive belt, 6
5 → processed material, 66 → curved surface, 71 → dresser, 7
7 → Belt.

Claims (1)

[Claims] 1. A forming roller that contacts and guides the abrasive belt is pivotally supported at a position where it contacts the workpiece, and a curved surface that matches the curved surface formed on the workpiece in terms of gender is attached to the outer peripheral surface of the forming roller. In a curved surface grinding machine that performs abrasive grinding of the curved surface of the workpiece by fitting the curved surface of the workpiece together with an abrasive belt into the shaping curved surface of a forming roller, the forming roller is placed on a fixed roller bearing shaft. A large number of outside air suction holes are provided in the outer circumferential surface of the forming roller and pass through to the internal holes of the forming roller, and each suction hole is connected to a suction hose through the internal hole. A curved surface sander, characterized in that the abrasive belt is connected to the outer circumferential surface of the forming roller by the suction hole. 2. A forming roller that contacts and guides the abrasive belt is pivotally supported at a position where it contacts the workpiece, and a curved surface that matches the curved surface formed on the workpiece in terms of gender is formed on the outer peripheral surface of the forming roller, and the above-mentioned In a curved surface grinding machine that performs abrasive grinding of the curved surface of the workpiece by fitting the curved surface of the workpiece together with the abrasive belt into the shaping curved surface of the forming roller, the forming roller is rotated freely around the fixed roller bearing shaft. provided with a large number of outside air suction holes opening on the outer peripheral surface of the forming roller and penetrating to the internal holes of the forming roller, each of the suction holes communicating with a suction hose through the internal holes, A flexible blade is provided in contact with the inner circumferential surface of the internal hole of the outside air suction hole provided in the forming roller, and in contact with the internal hole of the forming roller in a range where the abrasive belt contacts the outer circumferential surface of the forming roller and communicates with the suction hose. A curved surface sander characterized by a forming roller protruding from the bearing shaft. 3. A forming roller that contacts and guides the abrasive belt is pivotally supported at a position where it contacts the workpiece, and a curved surface that matches the curved surface formed on the workpiece in terms of gender is formed on the outer peripheral surface of the forming roller, In the curved surface grinding machine that performs abrasive grinding of the curved surface of the workpiece by fitting the curved surface of the workpiece together with the abrasive belt into the shaping curved surface of the forming roller, the forming roller is fixed in position so as to be rotated by the running of the abrasive belt. A large number of outside air suction holes are provided on the outer circumferential surface of a forming roller that is freely rotatable around a bearing shaft and penetrate to an internal hole of the roller, and each of the suction holes is communicated with a suction hose through the internal hole. The suction hole is configured to attract the abrasive belt to the outer peripheral surface of the forming roller, and a separate drive system for rotating the forming roller from which the abrasive belt has been removed matches the cross-sectional shape of the curved surface of the workpiece. The curved surface sander is provided with a dresser comprising a shaping blade, and the dresser is brought into contact with the outer circumferential surface of the forming roller rotated by the separate drive system from which the abrasive belt is removed to shape the outer circumferential surface.