JPH09192990A - Polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly polish a narrow machining surface formed on a workpiece, in its entirety. SOLUTION: A blade 17 is attached its back 17a to a support plate 15 so as to extend along a track of the support plate 15. A polishing belt 82 is arranged so as to be movable to and from the back 17a of the blade 17, and is always made into press-contact with the back 17a of the blade 17 under a predetermined pressure. In this condition, by moving the support plate 15, the back 17a of the blade is polished by the polishing belt 82, successively in the longitudinally direction of the blade 17. Accordingly, in such a case that the back 17a of the blade 17 is extending in a narrow and long shape, the back 17a can be easily polished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus suitable for polishing a narrow work surface of a work such as the back of a blade.

[0002]

2. Description of the Related Art Generally, for example, a kitchen knife has a metal blade body,
And a handle for holding the knife by hand, and a spine extending along the longitudinal direction of the blade is formed at an edge of the blade opposite to the blade. When polishing the back of the blade body, the blade body is supported and fixed on a work table or the like by a manual operation of an operator. After that, the operator presses the abrasive held by hand against the back of the blade, and in that state, moves the abrasive along the longitudinal direction of the blade to polish the back of the blade. The blade whose back is polished is manually removed by the operator from the workbench. Then, when the spines of a large number of blades are sequentially polished one by one, the above work is repeated.

[0003]

However, since the back of the blade is only as wide as the thickness of the blade, an unfamiliar worker presses the abrasive against the back of the blade with a constant pressure. In this state, it was difficult to move the abrasive in the longitudinal direction of the blade. Therefore, when the abrasive pressed against the back of the blade is moved in the longitudinal direction of the blade, the pressure of the abrasive against the back of the blade becomes uneven, and the back of the blade can be evenly polished. There was a problem that I could not do it.

Further, it takes skill to manually grind the spine, which has only a width corresponding to the thickness of the blade, along the longitudinal direction of the blade. There is a problem that the blade is polished obliquely with respect to the longitudinal direction.

Further, in order to grind the backs of a large number of blades, it is necessary to carry out a series of work of fixing, grinding and removing each of the blades, which makes the work complicated. There was a problem.

The present invention has been made to solve the above-mentioned problems, and a first object thereof is to uniformly polish the entire narrow processed surface formed on a work. A second object is to allow the machined surface to be easily polished along the longitudinal direction even if the machined surface is narrow.

A third object is to move the abrasive material in a direction in which it smoothly approaches or separates from the work surface even if the work surface of the work is curved.

A fourth object is to allow the machined surface of the work to be accurately ground.

[0009]

In order to achieve the above object, in the invention according to claim 1, the polishing is provided so as to be movable in a direction approaching or separating from a narrow working surface formed on the work. And a pressing means for pressing the polishing material against the work surface of the work at a constant pressure.

According to a second aspect of the invention, there is provided a moving means for moving the work in the longitudinal direction of the machined surface. According to the third aspect of the invention, the abrasive is moved around the spindle to move toward or away from the work surface of the workpiece.

In a fourth aspect of the present invention, a model that moves integrally with the work is provided, and a guide surface having the same shape as the work surface of the work is formed in the model, and the abrasive is used as the work surface of the work. Provided on a mounting head that moves toward or away from each other, the mounting head is provided with a guide portion that contacts the guide surface of the model, and the guide portion and the abrasive are respectively the guide surface of the model and the processed surface of the workpiece. The guide portion and the polishing material were arranged so as to contact with each other in synchronism with.

That is, according to the first aspect of the present invention, the abrasive is always brought into pressure contact with the narrow processing surface formed on the work by the pressure contact means. Then, when the work and the abrasive are moved relative to the longitudinal direction of the processed surface, the processed surface is sequentially polished by the abrasive along the relative movement direction. Further, the abrasive moves appropriately toward or away from the machined surface in accordance with the shape of the machined surface, and the pressure of the abrasive on the machined surface is kept constant by the movement of the abrasive.

According to the second aspect of the present invention, in addition to the function of the first aspect of the invention, the abrasive is pressed against the work surface of the work at a constant pressure, and in this state, the work moves the work surface longitudinally by the moving means. Is moved in the direction.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, in the case of a workpiece having a curved machining surface, when the workpiece moves, the machining surface presses the abrasive in the movement direction of the workpiece. . The pressing force exerted by the working surface on the abrasive is released as the abrasive rotates about the spindle.

According to the fourth aspect of the present invention, the second or third aspect is provided.
In addition to the operation of the invention described above, the guide portion provided on the mounting head comes into contact with the guide surface of the model that moves integrally with the work. When the guide portion contacts the guide surface, the abrasive provided on the mounting head contacts the work surface of the work. If the work and the model are moved together in this state, the abrasive moves due to the contact between the guide part and the guide surface, and moves toward or away from the work surface according to the shape of the work surface. You will be guided to do so.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the polishing device 11 includes a main body frame 12 formed in a three-dimensional frame shape, and a rail 13 extending in the left-right direction is provided on the upper surface of the main body frame 12. As shown in FIG.
A pair of rails 13 are provided on the front side of the upper surface of the main body frame 12 in the front-rear direction, and a plurality of rollers 14 rotatably supported are provided along the rails 13 on the opposite surfaces of the pair of rails 13.

As shown in FIG. 6, a supporting plate 15 as a moving means is placed on the roller 14. The support plate 15 is formed in a rectangular plate shape, and through holes 16 are formed at two diagonal corners of the support plate 15.
Is provided. Further, a blade 17 as a work is attached to the rear side edge portion on the upper surface of the support plate 15 by a mounting tool 18 so as to extend along the edge portion. The back 17a of the blade 17 protrudes from the rear edge of the support plate 15, and both longitudinal ends of the back 17a are curved toward the support plate 15 side. In the present embodiment, the spine 17a is provided as a processing surface.

As shown in FIG. 1, a pair of upper and lower pulleys 21 are rotatably supported at both left and right ends of the main body frame 12, and a belt electric motor 22 is provided at the lower left end of the main body frame 12. There is. The output shaft 22a of the belt electric motor 22 is drivingly connected to a pulley 21 located above the left end of the body frame 12 via a chain 23. A loop-shaped belt 24 is wound around each pulley 21, and the belt between the two pulleys 21 located above the main body frame 12 passes between a pair of rails 13. A plurality of protrusions 24 a are provided on the outer peripheral surface of the belt 24 at predetermined intervals.

When the output shaft 22a is rotated by driving the belt electric motor 22, the rotation of the output shaft 22a is transmitted to the pulley 21 located above the left end of the body frame 12 via the chain 23. The pulley 21
When the rotation of the output shaft 22a is transmitted to the belt 24, the belt 24 orbits outside the pulleys 21, and the belt 24 between the pulleys 21 located on the upper portion of the main body frame 12 moves to the left. As the belt 24 moves around, the belt 24 is attached to the support plate 15 placed on the roller 14 of the rail 13.
The protrusion 24a is caught, and the support plate 15 moves to the left along the rail 13 as the belt 24 moves around.

As shown in FIG. 2, the rail 13, the pulleys 21 and the belt 24 are provided on the rear side of the main body frame 12 as on the front side. That is, the rail 13, the pulley 21, and the belt 24 are provided in pairs on both the front side and the rear side of the main body frame 12. The belt 24 located on the rear side is configured to move circularly by driving the electric belt motor 22 provided at the lower right end of the main body frame 12 shown in FIG. The belt 24 located on the rear side moves in the opposite direction to the belt 24 located on the front side. Therefore, when the support plate 15 is placed on the roller 14 of the rail 13 located on the rear side and the belt 24 on the rear side is circularly moved, the support plate 15 is moved to the right side in FIG. Has become.

Elevating frames 26 each having a rectangular frame shape are provided at both left and right ends of the main body frame 12 so as to be capable of moving up and down. Further, the lifting devices 27 shown in FIG. 1 are provided below both lifting frames 26 at the left and right ends of the body frame 12, respectively. The elevating device 27 is connected to the elevating frame 26, and the elevating frame 26 is moved up and down by driving the elevating device 27.

As shown in FIG. 2, the elevating frame 26 is composed of a pair of left and right vertical bars 28 and a pair of front and rear horizontal bars 29. The pair of horizontal bars 29 are between the front rails 13 and the rear rails. They are located between 13 and 13 respectively. In addition, a cutting portion 30 is formed in each rail 13 at a position corresponding to the vertical bar 28 near the center of the body frame 12 in the left-right direction. When the elevating frame 26 moves up and down, the vertical bar 28 passes through the cutting portion 30 and the rail 13
It does not interfere with.

Posts 31 projecting upward from both front and rear edges of the main body frame 12 are provided on both front and rear sides of the two elevating frames 26, and a moving cylinder (not shown) is provided between the pair of posts 31. Has been. A moving cylinder between the columns 31 located on the left side moves the support plate 15 from the front rails 13 to the rear rails 13. In addition, the moving cylinder between the two columns 31 located on the right side includes the support plate 15 and the two rails 13 on the rear side.
To move to both rails 13 on the front side.

That is, when the support plate 15 moves along both front rails 13 and is positioned above the left elevating frame 26, the elevating frame 26 is raised. When the elevating frame 26 rises, the supporting plate 15 is placed on the front end portion of the elevating frame 26, and the supporting plate 15 is lifted upward from both front rails 13. After that, when the moving cylinder between the columns 31 located on the left side is expanded and contracted, the support plate 15 mounted on the front end of the elevating frame 26 is pushed backward by the moving cylinder. Then, the support plate 15 is pushed rearward by the moving cylinder to be moved to the rear end portion of the elevating frame 26. When the elevating frame 26 is lowered in this state, the supporting plate 15 on the elevating frame 26 is placed on the rollers 14 of both rails 13 located on the rear side.

When the support plate 15 moves along both rails 13 on the rear side and is located above the right elevating frame 26, the elevating frame 26 is raised. When the elevating frame 26 rises, the supporting plate 15 is placed on the rear end of the elevating frame 26, and the supporting plate 15 is lifted upward from both rear rails 13. After that, when the moving cylinder between the columns 31 located on the right side is expanded and contracted, the support plate 15 mounted on the rear end of the elevating frame 26 is pushed forward by the moving cylinder. Then, the support plate 15 is moved to the front end portion of the elevating frame 26 by being pushed forward by the moving cylinder. When the elevating frame 26 is lowered in this state, the supporting plate 1 on the elevating frame 26
5 is placed on the rollers 14 of both rails 13 located on the front side.

In the body frame 12, below the two rails 13 located on the rear side, three feeding devices 35 shown in FIG. 1 are arranged in parallel along the longitudinal direction of the rail 13.
Each of the feeding devices 35 is provided as a moving means.
As shown in FIG. 3, the feeding device 35 includes a base 36 extending in the longitudinal direction of the rail 13 and a moving body 37 that moves along the base 36. As shown in FIG. 4, an accommodating portion 38 is recessed in the front surface of the base 36, and the accommodating portion 38 extends along the longitudinal direction of the base 36 shown in FIG. An electric motor 39 for movement is provided at the right end in the accommodating portion 38, and an output shaft 39 a of the electric motor 39 for movement has a base 36.
Is connected to a screw shaft 40 extending in the longitudinal direction. or,
A pair of left and right support pieces 41 are provided in the housing portion 38, and the screw shaft 40 is rotatably supported by penetrating the pair of support pieces 41.

As shown in FIG. 4, a guide portion 42 formed in a substantially T-shape is provided on the upper portion of the base 36 so as to extend along the longitudinal direction of the base 36. Is provided with a pair of guide pieces 43 protruding toward both front and rear sides. In addition, in the base 36, on the surfaces 44 facing the lower surfaces of the pair of guide pieces 43, the base 36 is provided.
Is provided with a guide rail 45 extending in the longitudinal direction. The moving body 37 is provided on the upper side of the base 36, and the moving body 37 is provided with a pair of front and rear arms 46 so as to surround the pair of front and rear guide pieces 43. A guide groove 47 is provided on the lower surface of the arm 46 at a position corresponding to the guide rail 45 of the base 36, and the guide rail 45 is inserted into the guide groove 47.

A support bar 48 is erected on the front edge of the upper surface of the moving body 37. The support bar 48 is used for the main body frame 1.
2, the rails 13 on the rear side and the rails 13 on the front side are passed to project upward. A model attachment plate 49 is provided on the upper end of the support bar 48 so as to extend in the horizontal direction. The model mounting plate 49 is located above the upper surface of the moving body 37 and above both rear rails 13. Further, on the lower surface of the model mounting plate 49, a pair of seat rods 50 protruding downward are provided.

A model 51 is attached to the rear edge of the upper surface of the model attachment plate 49. As shown in FIG. 7, the model 51 extends along the edge and
A part protrudes and protrudes from the edge. Model 5
1, the side surface 51a on the side protruding from the model mounting plate 49 is the spine 1 of the blade 17 mounted on the support plate 15.
It is formed in the same shape as 7a. The side surface 51a is provided as a guide surface.

As shown in FIG. 4, the arm 36 on the front side of the moving body 37 projects downward and the base 36.
A connecting portion 52 is provided which extends into the housing portion 38.
As shown in FIG. 3, a driven body 53 is provided in a portion of the connecting portion 52 located inside the housing portion 38, and the driven body 53 is screwed to the screw shaft 40. The output shaft 39a and the screw shaft 40 are driven by driving the moving electric motor 39.
When the driven body 53 is rotated, the driven body 53 moves in the axial direction of the screw shaft 40, and with the movement of the driven body 53, the moving body 37 moves in the longitudinal direction of the base 36.

A pair of left and right guide cylinders 55 are provided upright on the upper surface of the moving body 37, and guide bars 56 are inserted in the respective guide cylinders 55. An elevating plate 57 formed in a flat plate shape is provided on the upper side of both guide cylinders 55.
The upper ends of both guide bars 56 are connected to the lower surface of the. Between the lower surface of the elevating plate 57 and the upper surface of the moving body 37, a vertically elevating cylinder 58 is provided between both guide cylinders 55. When the elevating cylinder 58 is expanded and contracted, the elevating plate 57 is guided by the guide cylinder 55 and the guide bar 56 to move up and down.

A pair of push-up columns 59 are provided on the upper surface of the lift plate 57.
Is provided. When the support plate 15 is located above the lift plate 57, both push-up columns 59 are located below the through hole 16 in the support plate 15, as shown in FIG. The push-up column 59 is formed to have a diameter larger than the inner diameter of the through hole 16. Further, a small diameter portion 60 is provided at the upper end portion of the push-up column 59, and the small diameter portion 60 is formed to have a diameter slightly smaller than the inner diameter of the through hole 16.

When the elevating plate 57 is raised with the supporting plate 15 positioned above the elevating plate 57, the small-diameter portions 60 of both push-up columns 59 are inserted into both through holes 16 of the supporting plate 15. The support plate 15 is pushed upward by the push-up post 59. As shown in FIG. 7, the support plate 15 pushed upward is fixed by being pressed against a pair of seat rods 50 provided on the lower surface of the model mounting plate 49. In this state, the spine 17a of the blade 17 attached to the support plate 15
And the side surface 51a of the model 51 attached to the model attachment plate 49 are located in the same vertical plane.

As shown in FIG. 2, on the rear side of the main body frame 12, three polishing machines 6 corresponding to the three feeding devices 35 are provided.
5 are arranged side by side in the left-right direction. A support flange 66a projects from a left side surface of a main body plate 66 as a mounting head provided in the polishing machine 65, and the support flange 66a is mounted on a projecting plate 67 projecting from a rear side surface of the main body frame 12. Further, the projecting plate 67 is provided with a rotating shaft 68 projecting upward as a supporting shaft, and the rotating shaft 68 penetrates the support flange 66a from the lower side to the upper side as shown in FIG. The rotating shaft 68 is located corresponding to the left end of the feeding device 35, and the polishing machine 65 is rotatable around the rotating shaft 68.

A drive shaft 69 extending in the vertical direction is provided at the front end of the main body plate 66 of the polishing machine 65.
Is rotatably supported by penetrating the main body plate 66. A drive shaft side pulley 70 is fixed to the upper end of the drive shaft 69 located above the upper surface of the main body plate 66. The drive shaft 69 positioned below the lower surface of the main body plate 66 includes a guide roller 71 as a guide portion and a drive shaft side roller 72.
Penetrates through. The guide roller 71 is the drive shaft 69.
The drive shaft side roller 72 is fixed to the drive shaft 69. The guide roller 71 is located at a height corresponding to the model 51 of the feeding device 35, and the drive shaft side roller 72 is located at a height corresponding to the lower end portion of the seat rod 50 in the feeding device 35.

A motor mounting plate 73 is provided on the upper side of the main body plate 66.
Are provided apart from the upper surface of the main body plate 66. An electric motor 74 for polishing is provided on the upper side of the motor mounting plate 73.
The output shaft 74a of the polishing electric motor 74 penetrates the motor mounting plate 73 from above to below. An output shaft side pulley 75 is fixed to the lower end portion of the output shaft 74a located below the lower surface of the motor mounting plate 73, and the output shaft side pulley 75 and the drive shaft side pulley 70 are connected to a drive belt 76.
Are connected via

On the lower surface of the main body plate 66, a pair of mounting pieces 77 are provided at the central portion in the front-rear direction so as to project downward, and a tensioning cylinder 78 extending horizontally is provided between the mounting pieces 77. It is provided. Tensioning cylinder 7
The cylinder tube 78a of No. 8 is supported by the front mounting piece 77, and the rod 78b of the tensioning cylinder 78 penetrates the rear mounting piece 77 from the front to the rear. Then, the rod 78b moves in the axial direction of the tensioning cylinder 78 by protruding and retracting with respect to the cylinder tube 78a.

A rod 78b penetrating the mounting piece 77 on the rear side.
A moving plate 79 formed in a substantially L shape is attached to the tip of the. A driven shaft 80 protruding downward is rotatably supported by the moving plate 79, and a driven shaft side roller 81 is fixed to the driven shaft 80. A loop-shaped polishing belt 82 is wound around the driven shaft side roller 81 and the drive shaft side roller 72, and the driven belt side roller 81 and the drive shaft side roller 72 are integrally rotated by the polishing belt 82. Connected as possible. The polishing belt 82
Is provided as an abrasive. The width of the polishing belt 82 is larger than the thickness of the blade 17. Abrasive grains are attached to the outer peripheral surface of each of the polishing belts 82 of the three polishing machines 65, and the grain size of the abrasive grains is gradually reduced from the polishing belt 82 on the left side to the polishing belt 82 on the right side in FIG. .

In the tensioning cylinder 78 shown in FIG. 5, the rod 78b is projected from the cylinder tube 78a so that the moving plate 79 and the driven shaft 80 are always driven by the drive shaft 69.
It is pressed with a predetermined pressure in the direction of separating from. As a result, the polishing belt 82 mounted on the drive shaft side roller 72 and the driven shaft side roller 81 is always held in a tensioned state.

When the output shaft 74a is rotated by driving the polishing electric motor 74, the rotation of the output shaft 74a is transferred to the drive shaft 69 via the output shaft side pulley 75, the drive belt 76, and the drive shaft side pulley 70. Transmitted. Output shaft 74
When the rotation of a is transmitted to the drive shaft 69, the drive shaft 69 and the drive shaft side roller 72 rotate about the axis of the drive shaft 69, and the polishing belt 82 is always tensioned to the drive shaft side roller 72. It is adapted to move around the driven shaft side roller 81.

Further, the model mounting plate 4 in the feeding device 35
The support plate 15 is pressed against and fixed to the bearing rod 50 of No. 9, and in that state, the polishing machine 65 is rotated forward so that the rotation shaft 68 becomes the center. Then, the outer peripheral surface of the polishing belt 82 is attached to the back plate 17 of the blade 17 attached to the support plate 15.
a side surface 51a of the model 51 that is in contact with a and the outer peripheral surface of the guide roller 71 is mounted on the model mounting plate 49.
It comes in contact with.

A position changing electric motor 83 is provided on the upper surface of the main body plate 66. When the position changing electric motor 83 is driven while the polishing belt 82 is rotated, the polishing belt 82 is twisted and the polishing belt 82 is driven by the drive shaft side roller 72 and the driven shaft side roller 8.
It is adapted to be reciprocally displaced in the vertical direction with respect to 1.

As shown in FIG. 2, a connecting plate 84 is provided on the right side surface of the main body plate 66, and the connecting plate 84 is connected to the tip portion of the rod 85b of the pressing cylinder 85. The pressing cylinder 85 is provided as a pressure contact means. The rod 85b is capable of projecting and retracting with respect to the cylinder tube 85a of the pressing cylinder 85, and the base end portion of the cylinder tube 85a of the pressing cylinder 85 is connected to a mounting base 86 protruding from the rear side surface of the main body frame 12. Has been done. Then, the pressing cylinder 85
The rod 85b is retracted into the cylinder tube 85a so that the polishing machine 65 always presses the polishing machine 65 with a constant pressure in the direction in which the polishing machine 65 rotates around the rotation shaft 68 toward the main body frame 12. Has become.

Next, the polishing apparatus 1 configured as described above
1 will be described. The support plate 15 to which the blade 17 is attached is placed on the rollers 14 of both rails 13 located on the front side in the main body frame 12 of FIG. 2, and the belt 24 is moved by the drive of the electric belt motor 22. Then, the protrusion 24 a provided on the outer peripheral surface of the belt 24 is caught by the support plate 15, and the support plate 15 is attached to the belt 2 by the protrusion 24 a.
With the orbital movement of No. 4, it moves to the left side of the main body frame 12 along both rails 13. Then, when the support plate 15 is positioned above the elevating frame 26 provided at the left end of the main body frame 12, the belt electric motor 22 is stopped, and the circular movement of the belt 24 is stopped.

In this state, when the elevating frame 26 is raised by driving the elevating device 27, the supporting plate 15 is placed on the front end of the elevating frame 26, and the supporting plate 15 is lifted from the both rails 13 by the elevating frame 26. It can be lifted up. After that, when the moving cylinders between the columns 31 located on the front and rear sides of the lifting frame 26 are expanded and contracted, the support plate 15 on the lifting frame 26 is pushed backward by the moving cylinders. The support plate 15 is pushed by the moving cylinder to move from the front end of the elevating frame 26 to the rear end of the elevating frame 26.

When the support plate 15 is moved to the rear end of the elevating frame 26, the elevating frame 26 is lowered by driving the elevating device 27. When the elevating frame 26 on which the supporting plate 15 is placed is lowered, the supporting plate 15 moves from the elevating frame 26 to both rails 1 located on the rear side of the body frame 12.
Transfer to the roller 14 of No. 3. After that, body frame 1
When the belt 24 located on the rear side of the belt 2 is moved around, the protrusions 24a provided on the outer peripheral surface of the belt 24 are caught by the support plate 15, and the support plate 15 is moved to both rails 13 as the belt 24 moves around. It moves to the right side of the body frame 12 along.

When the support plate 15 moves to a position above the elevating plate 57 of the feeding device 35 located on the leftmost side, the movement of the support plate 15 is stopped by stopping the circular movement of the belt 24. The support plate 15 that has stopped moving is located above the lifting plate 57 and below the model mounting plate 49 of the feeding device 35. When the support plate 15 stops above the lifting plate 57, the pair of through holes 16 provided in the support plate 15 are located above the pair of push-up columns 59 provided in the lifting plate 57 as shown in FIG. To position. In this state, when the raising / lowering cylinder 58 shown in FIG. 3 provided in the feeding device 35 is extended, the raising / lowering plate 57 rises and the small diameter portion 60 provided at the upper end of both push-up columns 59 penetrates the support plate 15. It is inserted into the hole 16.

When the small diameter portion 60 is inserted into the through hole 16,
The support plate 15 is placed on the upper end of the push-up pillar 59, and is lifted up from both rails 13 by the push-up pillar 59. The support plate 15 lifted upward from both rails 13 is pressed against the lower ends of both receiving rods 50 provided on the model mounting plate 49 as shown in FIG. 7. That is, the support plate 15 is sandwiched between the push-up column 59 and the seat rod 50. Then, the support plate 15 is prevented from being displaced in the horizontal direction by inserting the small diameter portion 60 of the push-up pillar 59 into the through hole 16, and is sandwiched between the push-up pillar 59 and the seat rod 50. Positional deviation in the vertical direction is prevented.

When the support plate 15 is pressed against the seat rod 50 and fixed, the polishing electric motor 74 of the polishing machine 65 shown in FIG. 5 is driven, and the output shaft 74a of the polishing electric motor 74 is rotated. It The rotation of the output shaft 74a is transmitted to the drive shaft 69 via the output shaft side pulley 75, the drive belt 76, and the drive shaft side pulley 70. When the rotation of the output shaft 74a is transmitted to the drive shaft 69, the drive shaft 69 and the drive shaft side roller 72 rotate, and the polishing belt 82 causes the drive shaft side roller 7 to rotate.
2 and moves around the driven shaft side roller 81. Further, by driving the position changing electric motor 83a, the polishing belt 82 that revolves is reciprocally displaced in the vertical direction with respect to the drive shaft side roller 72 and the driven shaft side roller 81.

In this state, the moving electric motor 39 of the feeding device 35 shown in FIG. 3 is driven, and the driving of the moving electric motor 39 causes the output shaft 39a and the screw shaft 40 to rotate. When the screw shaft 40 is rotated, the moving body 37 moves from the left end of the base 36 toward the right end of the base 36,
As the moving body 37 moves, the model mounting plate 49 and the support plate 15 also move. The model mounting plate 49 and the supporting plate 15 are located corresponding to the polishing machine 65 located on the leftmost side in FIG.
Moves toward the right side of FIG.

When the model mounting plate 49 and the supporting plate 15 move toward the right side in FIG. 2, the guide roller 71 of the polishing machine 65 is brought into contact with the right end of the side surface 51a of the model 51 mounted on the model mounting plate 49. To do. Further, at the same time when the model 51 contacts the guide roller 71, the polishing belt 82 of the polishing machine 65 contacts the right end of the spine 17a of the blade body 17 attached to the support plate 15 shown in FIG. The guide roller 71 and the polishing belt 82 are fixed to the side surface 51a of the model 51 and the spine 1 of the blade 17 by the pressing cylinder 85 shown in FIG.
7a are pressed against each other.

When the spine 17a of the blade 17 contacts the polishing belt 82, the pressing force of the blade 17 due to the movement of the support plate 15 acts on the polishing belt 82 in the direction of arrow A in FIG. The pressing force of the blade body 17 is released by the polishing machine 65 rotating around the rotating shaft 68 and the polishing belt 82 moving in a direction away from the spine 17a of the blade body 17. Then, the model mounting plate 49 and the support plate 15 are in a state where the guide rail 71 and the polishing belt 82 of the polishing machine 65 are in contact with the side surface 51a of the model 51 and the spine 17a of the blade body 17, respectively.
Continue to the right of.

Then, the guide roller 71 is moved to the polishing machine 65.
Is rotated about the axis of the rotation shaft 68, so that the side surface 51a of the model 51 can be formed in correspondence with the shape of the side surface 51a.
It appropriately moves in a direction toward or away from a. or,
The polishing belt 82 approaches or separates from the spine 17a of the blade 17 in synchronization with the approach or separation of the guide roller 71 from the side surface 51a. Since the side surface 51a of the model 51 is formed in the same shape as the spine 17a of the blade body 17, the polishing belt 82 is always in contact with the spine 17a of the blade body 17 at a constant pressure.

Therefore, the model mounting plate 49 and the support plate 1
As 5 moves to the right side of FIG.
As shown in FIG. 8, the blade 1 is attached to the back 17a of the blade 17
7 are sequentially contacted along the longitudinal direction. And the blade 17
The spine 17a is sequentially polished along the longitudinal direction of the blade body 17 by the polishing belt 82 which comes into contact with the spine 17a while revolving and reciprocating in the vertical direction. Since the abrasive grains attached to the polishing belt 82 have the largest grain size among the polishing belts 82 provided in the three polishing machines 65, the spine 17a of the blade 17 is roughly polished.

Thereafter, the moving body 37 is moved to the base 36 shown in FIG.
When it is located at the right end portion of, the moving electric motor 39 is stopped and the movement of the moving body 37 is stopped. When the movement of the moving body 37 is stopped, the support plate 15 is lowered due to the contraction of the lifting cylinder 58, and the support plate 15 is the roller 1 of the rails 13 positioned on the rear side of the main body frame 12 of FIG.
Can be placed on the 4. When the support plate 15 is placed on the rollers 14, the support plate 15 is moved to the right side of the main body frame 12 along both rails 13 by the circular movement of the belt 24 located on the rear side.

Thereafter, the spine 17a of the blade 17 is the same as the polishing machine 65 located on the leftmost side, and the polishing machine 65 located on the center in the left-right direction in FIG. 2 and the polishing machine located on the rightmost side. And 65 are sequentially polished. The grain size of the polishing belt 82 provided in each polishing machine 65 is smaller as compared to the polishing belt 82 located on the right side.
7a is successively finely ground. After the spine 17a of the blade body 17 is ground by the rightmost polishing machine 65, the support plate 15 to which the blade body 17 is attached is located on the rear side of the two frames 1.
3 is placed on the roller 14.

The support plate 15 is the roller 14 of both frames 13.
When placed on the support plate 15, the support plate 15 is moved toward the right side of the main body frame 12 along the rails 13 by the circular movement of the belt 24 located on the rear side. Then, when the support plate 15 is positioned above the elevating frame 26 provided at the right end portion of the main body frame 12, the circular movement of the belt 24 is stopped and the movement of the support plate 15 is stopped.

In this state, when the elevating frame 26 is raised by driving the elevating device 27, the supporting plate 15 is placed on the rear end of the elevating frame 26, and the supporting plate 15 is supported by the elevating frame 26 on both rails 13. From above. After that, when the moving cylinders between the columns 31 located on the front and rear sides of the lifting frame 26 are expanded and contracted, the support plate 15 on the lifting frame 26 is pushed forward by the moving cylinders. The support plate 15 is pushed by the moving cylinder to move from the rear end of the elevating frame 26 to the front end of the elevating frame 26.

When the support plate 15 is moved to the front end of the elevating frame 26, the elevating frame 26 is lowered by driving the elevating device 27. When the elevating frame 26 on which the supporting plate 15 is placed is lowered, the supporting plate 15 moves from the elevating frame 26 to both rails 1 located on the front side of the main body frame 12.
Transfer to the roller 14 of No. 3. After that, body frame 1
The support plate 15 is moved to the left side of the main body frame 12 along both rails 13 by the circular movement of the belt 24 located on the front side of 2. Then, the worker attaches the support plate 15 to both rails 1
By removing the blade 17 from the support plate 15, the polishing work of the spine 17a of the blade 17 is completed.

In this embodiment described in detail above, the following (a)
(G). (A) The back 17a of the blade 17 is polished by the polishing belt 82 which is constantly pressed against the back 17a at a constant pressure. Therefore, even when the spine 17a of the blade 17 is narrow and elongated, the entire spine 17a can be easily and uniformly polished.

(B) The blade body 17 is moved in the longitudinal direction of the blade body 17 with the polishing belt 82 pressed against the spine 17a, and the movement of the blade body 17 causes the spine 17a to move in the longitudinal direction of the blade body 17. It was made to polish sequentially along. Therefore, the narrow and slender spine 17a formed on the blade body 17 can be easily polished along the longitudinal direction of the blade body 17.

(C) When the pressing force of the blade 17 due to the movement of the support plate 15 acts on the polishing belt 82, the pressing force is released by the polishing machine 65 rotating about the rotation shaft 68. Therefore, by rotating the polishing belt 82 about the rotation shaft 60, the polishing belt 82 can be smoothly moved toward or away from the spine 17a of the blade body 17 without being caught. Therefore, the pressure of the polishing belt 82 acting on the spine 17a of the blade body 17 can be reliably kept constant and the spine 17a of the blade body 17 can be uniformly polished.

(D) The polishing belt 82 includes the guide roller 7
1 and the side surface 51a of the model 51, the blade body 17
The back 17a is guided so as to move toward or away from the back 17a according to the shape of the back 17a. Therefore, even if the spine 17a of the blade 17 is complicatedly curved, the spine 17a can be accurately ground.

(E) The polishing apparatus 11 is provided with three polishing machines 65, and the abrasive grains of the polishing belts 82 provided on the respective polishing machines 65 are arranged on the right side of FIG.
I made it smaller. Then, the support plate 15 to which the blade body 17 is attached is sequentially moved from the polishing machine 65 located on the left side to the polishing machine 65 located on the right side, and the polishing belt 82 of each polishing machine 65 moves the spine 17a of the blade body 17a. Were sequentially polished. Therefore, the spine 17a of the blade body 17 can be successively finely ground.

(F) The back 17a of the blade 17 is the polishing belt 8
When it is ground by 2, the support plate 15 includes the seat rod 50 and the push-up post 5.
The small-diameter portions 60 of the pair of push-up columns 59 are inserted into the pair of through holes 16 provided in the support plate 15 while being sandwiched between the pair of push-up columns 59. Therefore, the polishing belt 82
It is possible to prevent the support plate 15 from being displaced in the vertical direction or the horizontal direction when the blade is pressed against the spine 17a of the blade body 17.

(G) The polishing belt 82 reciprocally displaces in the vertical direction with respect to the rollers 72, 81 while revolving around the drive shaft side roller 72 and the driven shaft side roller 81, so that the blade body The spine 17a of 17 is polished using the entire width direction of the polishing belt 82. Therefore, the polishing belt 82
The polishing belt 8 compared to the case where the
Since the wear rate per unit area of 2 becomes small,
The replacement cycle of the polishing belt 82 can be lengthened.

The present invention can be embodied with the following modifications, for example. (1) In this embodiment, the blade 17 is moved in the longitudinal direction of the spine 17a by moving the support plate 15 to which the blade 17 is attached by the feeding device 35, but the present invention is not limited to this. Not done. That is, the polishing machine 65 is manually movable in the left-right direction in FIG.
The polishing belt 82 of No. 5 is pressed against the spine 17a of the blade body 17 fixed to the main body frame 12. And polishing machine 6
The back 17a of the blade 17 fixed to the main body frame 12 may be polished by manually moving the blade 5.

(2) In this embodiment, the blade 17 is exemplified as the work, and the back 17a of the blade 17 is polished by the polishing device 11.
However, instead of this, the side edge portions of the thin metal plate, the wooden plate and the stone plate may be polished by the polishing device 11.

(3) In this embodiment, the polishing belt 82 is exemplified as the abrasive, but a grindstone may be provided as the abrasive instead of this. (4) In the present embodiment, the polishing machine 65 is rotated about the rotation shaft 68 so that the polishing belt 82 moves toward or away from the spine 17a of the blade body 17. However, the present invention is not limited to this. That is, the polishing machine 65 may be slid in a direction orthogonal to the movement path of the support plate 15 to move the polishing belt 82 in a direction toward or away from the spine 17a of the blade body 17.

(5) In the present embodiment, the rotary shaft 68 is positioned corresponding to the left end of the feeding device 35, but the position of the rotary shaft 68 may be changed appropriately. (6) In the present embodiment, the configuration of the polishing apparatus 11 may be simplified by omitting the model 51.

(7) In the present embodiment, the polishing apparatus 11 is provided with three polishing machines 65, but the number of polishing machines 65 may be changed appropriately. (8) In the present embodiment, a large number of support plates 15 to which the blades 17 are attached are prepared, and each support plate 15 is sequentially placed on the rollers 14 of both rails 13 located on the front side of the main body frame 12. You may In this case, each of the backs 17a of the plurality of blades 17 is attached to each polishing machine 65.
Unlike the conventional method, each of the spines 17a of a large number of blades 17 can be easily polished because they are sequentially polished.

Next, technical ideas other than the claims that can be grasped from the above embodiments will be described below together with their effects. (A) In the polishing apparatus according to any one of claims 1 to 4, a plurality of abrasives are provided along a movement path of the work,
A polishing apparatus in which the abrasive grains are gradually reduced in size from those located upstream of the movement path of the work to those located downstream thereof. In this case, the processed surface of the work can be easily and successively finely ground.

(B) In the polishing apparatus according to any one of claims 1 to 4 and (a), a fixing means (through hole 16, which fixes the work so as not to shift when the polishing material polishes the work surface of the work). Seat rod 50, push-up post 59, small diameter portion 60)
Polishing device. In this case, it is possible to prevent the work from shifting when the abrasive is pressed against the work surface of the work.

[0074]

According to the first aspect of the present invention, since the abrasive is always pressed against a narrow work surface formed on the work with a constant pressure, the entire work surface can be uniformly polished. it can. According to the invention of claim 2, in addition to the effect of the invention of claim 1, the work is moved in the longitudinal direction of the machined surface by the moving means, and the machined surface is sequentially polished along the longitudinal direction by the movement of the work. To be polished. Therefore, even if the processed surface is narrow, the processed surface can be easily polished along the longitudinal direction.

According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, when the work surface is pressed against the abrasive material by the movement of the workpiece, the abrasive force is applied to the abrasive surface of the abrasive material. It is escaped by turning around. Therefore, even if the work surface of the work is curved, the abrasive can be smoothly moved toward or away from the work surface without hindering the movement of the work.

According to the invention of claim 4, claim 2 or 3
In addition to the effects of the invention described above, the abrasive is guided by the contact between the guide portion and the guide surface so as to move toward or away from the work surface corresponding to the shape of the work surface of the workpiece. Therefore, the processed surface of the work can be accurately polished.

[Brief description of the drawings]

FIG. 1 is a front view showing a polishing apparatus of this embodiment.

FIG. 2 is a plan view showing a polishing device.

FIG. 3 is a front view showing a feeding device.

FIG. 4 is a right side view showing the feeding device.

FIG. 5 is a sectional view showing a polishing machine.

FIG. 6 is a perspective view showing a support plate and rails.

FIG. 7 is a perspective view showing a model mounting plate and a support plate.

FIG. 8 is an explanatory diagram showing a polished state of the back of the blade body.

[Explanation of symbols]

11 ... Polishing device, 15 ... Support plate as moving means, 17
... blade as work, 17a ... spine as processing surface, 3
5 ... Feeding device as moving means, 51 ... Model, 51a
... Side surface as guide surface, 66 ... Main body plate as mounting head, 68 ... Rotating shaft as support shaft, 71 ... Guide roller as guide section, 82 ... Abrasive belt as abrasive material,
85 ... A pressing cylinder as a pressure contact means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michiro Horibe 1 1929 Shimohachiya Hachiyacho, Minokamo City, Gifu Prefecture Tsunekawa Industry Co., Ltd. (72) Inventor Masatoshi Watanabe 2-10 Nishi Nishinogo-dori, Seki City, Gifu Prefecture Kaneki Knife Mfg. Co., Ltd. (72) Inventor Kunihiko Toki 8 Nagasumi-cho, Seki City, Gifu Prefecture Toa Caesa Stock Company (72) ) Inventor Kazuaki Okuda 9 Tsukimi-cho, Seki City, Gifu Prefecture Okuda Cutlery Co., Ltd.

Claims (4)

[Claims] 1. An abrasive material (82) movably provided in a direction approaching or leaving a narrow working surface (17a) formed on a work (17), and the abrasive material (82). Work surface (17)
A pressure contact means (8) for constantly contacting a) with a constant pressure.
5) A polishing device comprising: 2. The work surface (17a) is a work surface (17a).
2. The polishing apparatus according to claim 1, further comprising moving means (15, 35) for moving in the longitudinal direction. 3. The working material (1) of the work (17) is rotated by rotating the abrasive material (82) about a support shaft (68).
The polishing apparatus according to claim 2, which moves in a direction toward or away from 7a). 4. A model (51) which moves integrally with the work (17) is provided, and the model (51) has a guide surface (51) having the same shape as the machining surface (17a) of the work (17).
a), the abrasive material (82) is provided on a mounting head (66) which moves toward or away from the machined surface (17a) of the work (17), and the mounting head (6) is provided.
6) is provided with a guide portion (71) that comes into contact with the guide surface (51a) of the model (51), and further, the guide portion (71).
The guide part (71) and the abrasive (82) so that the abrasive and the abrasive (82) contact the guide surface (51a) of the model (51) and the processed surface (17a) of the work (17), respectively. The polishing apparatus according to claim 2, wherein the polishing apparatus is arranged.