JP5685276B2 - Saw blade back taper processing equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a saw back taper processing device used when performing back taper processing on a saw blade.

  When cutting the workpiece with a saw, the thickness of the back side of the saw blade should be adjusted so that the side surface of the saw blade contacts the cut surface of the workpiece and frictional resistance is generated, which does not interfere with the cutting operation. It is necessary to make it thinner than the thickness on the blade side.

  Conventionally, in order to make the thickness on the back side of this saw blade thinner than the thickness on the blade side, the saw blade part is bent toward the left and right sides after the sawing is said to be done, and the blade part Has been used, or a method of grinding both sides of the back side of the saw, which is called back taper processing, with a grinding device having a grindstone so that the thickness on the back side is made thinner than the blade side. .

  However, if the work piece is cut with a saw that has been set up, streak-like cut marks will appear on the cut surface, and the cut surface will not finish smoothly, resulting in a poor appearance (quality). There is a problem that not only the quality can be lowered but also the quality can be reduced.

  Also, in the conventional back taper processing, a plate material formed in a saw blade shape is attached to a jig for each piece, and one side surface is ground by a back taper processing device. It was attached to the tool and the other side was ground. For this reason, the work efficiency is poor, and if the grinding is performed one side at a time, the balance of stress of the plate material is lost and the plate material is warped during processing, and it is difficult to process with high accuracy.

  In view of the present situation as described above, the present invention is a revolutionary that has excellent working efficiency and excellent practicality capable of remarkably improving left-right symmetric accuracy in back taper machining of saw blades. An object of the present invention is to provide a saw blade back tapering apparatus.

  The gist of the present invention will be described with reference to the accompanying drawings.

Both sides of the saw blade 1 are ground with a rotating grindstone 2 so that the back side of the saw blade 1 is thinner than the blade side and the back taper for reducing the frictional resistance with the cut surface of the workpiece is provided. 1 is a back taper processing device for a saw blade formed on the saw blade 1, and holds the saw blade 1 in an upright state , and the saw blade 1 held in the upright state of the saw blade 1 with respect to the rotating grindstone 2 A saw blade moving mechanism 3 configured to be movable in the front / rear direction and the up / down direction , which is relatively moved in the front / rear direction which is the length direction and the vertical direction which is a direction perpendicular to the length direction, and the blade portion of the saw blade 1 Alternatively, a saw blade support portion 4 that contacts the back portion and supports the saw blade 1 is provided, and the rotating grindstone 2 is arranged in an opposed state on both side surfaces of the saw blade 1 that is moved by the saw blade moving mechanism 3. The rotating grindstone 2 is a cup-shaped or ring-shaped grindstone. A cup-shaped grindstone 2 that grinds while contacting the tip surface 5 is employed, and the cup-shaped grindstone 2 is disposed in an inclined state with respect to both side surfaces of the saw blade 1, and the side surface of the saw blade 1 is disposed on the side surface. A portion that is configured to grind in an arc shape in the thickness direction of the saw blade 1 and that is closest to the side surface of the saw blade 1 of the ring-shaped tip surface 5 of the cup-shaped grindstone 2 disposed in the inclined state, The abutting position is made the thinnest by grinding so as to abut against the back side from the center of the saw blade 1, and the rotating grindstone moving mechanism 6 approaches and abuts the saw blade 1. The saw blade 1 is configured such that both side surfaces thereof are ground simultaneously by a predetermined amount, and the side surface of the saw blade 1 is supported between the cup-shaped grindstones 2 to suppress the vibration of the saw blade 1 during grinding. A stop support portion 7 is provided, and one side in the length direction of the saw blade 1 arranged in a standing state is the saw. The other side in the length direction of the saw blade 1 held by the moving mechanism 3 and held at one side by the saw blade moving mechanism 3 is supported in a sandwiched state by the steady rest support portion 7, and the steady rest support portion 7 The saw blade support portion 4 is brought into contact with the lower end of the saw blade 1 on the saw blade moving mechanism 3 side from the supported position to support the saw blade 1 from below, and the saw blade support portion 4 The saw-type back taper processing device is characterized in that the cup-shaped grindstone 2 is configured to abut on both side surfaces of the saw blade 1 located between being supported by the steady rest support portion 7. is there.

Further, the saw blade support portion 4 has a configuration in which a roller portion 8 is provided at a tip portion, and the roller portion 8 is moved by the saw blade moving mechanism 3 while abutting the lower end of the saw blade 1. 2. The saw blade back taper processing apparatus according to claim 1, wherein the saw blade is supported from the lower side.

The saw blade back taper processing device according to any one of claims 1 and 2 , wherein the saw blade support portion 4 is configured to be movable in the vertical direction. .

The saw blade 1 held in the standing state by the saw blade moving mechanism 3 is simultaneously cut with the cup-shaped grindstone 2 on both sides of the saw blade 1 while being moved toward the saw blade moving mechanism 3 side. The saw taper back taper processing device according to any one of claims 1 to 3 , wherein the device is configured as described above.

The saw blade moving mechanism 3 includes a saw blade holding portion 9 that holds the saw blade 1 in an upright state, and a longitudinal direction of the saw blade 1 that is held by the saw blade holding portion 9. The moving unit 10 is provided so as to be movable in the vertical direction that is perpendicular to the direction and the length direction, and the movement of the moving unit 10 is controlled, and the moving unit 10 is linearly matched to the shape of the saw blade 1 The saw taper back taper processing device according to any one of claims 1 to 4 , characterized by comprising a movement control section that moves in a curved or curved manner.

The rotary grindstone moving mechanism 6 has a grindstone wear amount detection sensor 11 for measuring the position of the ring-shaped tip surface 5 of the cup-shaped grindstone 2, and the cup-shaped grindstone 2 of the cup-shaped grindstone 2 is determined according to the detected grindstone wear amount. The saw taper back taper processing apparatus according to any one of claims 1 to 5 , wherein the amount of movement of the saw blade 1 to both side surfaces is automatically corrected.

The backrest taper processing of the saw blade according to any one of claims 1 to 6 , wherein the steady rest support portion 7 is disposed between the cup-shaped grindstones 2 disposed in an opposing state. It concerns the device.

Further, the cup-shaped grindstone 2 by the grinding wheel movement mechanism 6, one of claims 1 to 7, characterized by being configured so as to freely adjusted angle of inclination with respect to both side surfaces of the saw body 1 The present invention relates to the saw taper back taper processing device according to item 1.

Since the present invention is configured as described above, in the back taper processing, the work efficiency is good, the processing accuracy is excellent, and the left-right symmetry accuracy is remarkably improved, and the back taper can be easily applied to saw blades of various shapes. This is a revolutionary saw blade taper processing device with excellent practicality that can be processed.

In the invention according to claim 2 , the lower end forming the blade portion of the saw blade can be supported without being scratched and can be moved smoothly. It is an epoch-making saw blade back taper processing device that can reduce resistance during movement and further improve processing accuracy.

The invention according to claim 3 is an innovative saw taper processing device for a saw blade that is more practical and capable of performing back taper processing more easily on various shapes of saw blades. .

Further, in the invention according to claim 4 , by pulling the saw blade toward the saw blade moving mechanism side, a pulling force for pulling the saw blade in the length direction is generated in the saw blade, and by this pulling force, The revolution of the saw blade during grinding is further suppressed, the processing accuracy is further improved, and an innovative saw blade back taper processing device capable of performing a back taper processing with a beautiful finish.

In the invention according to claim 5 , not only a saw blade formed in a straight shape having a constant width (height) but also a saw blade formed in a curved shape or a shape having a non-constant width, for example, gradually. It is an epoch-making saw blade back taper processing device that can easily perform back taper processing at a predetermined position for saw blades of various shapes, such as saw blades formed in a wide shape. .

In the invention of claim 6 , the wear amount of the cup-shaped grindstone is detected by the grindstone wear amount detection sensor, and the movement position of the cup-shaped grindstone is automatically adjusted according to the detected wear amount, Since grinding can be performed so that the grinding amount always becomes a predetermined grinding amount, highly accurate and stable back taper processing can be performed continuously, and back taper processing can be performed more efficiently and with high accuracy. This is a revolutionary saw blade taper processing device with excellent practicality.

In the invention according to claim 7 , the interval between the saw blade moving mechanism that holds one side in the length direction of the saw blade and the steady rest support portion that supports the other side in the length direction of the saw blade can be reduced. By narrowing the distance between the two points, the saw blade can be supported more stably, which further suppresses the saw blade vibration during grinding, further improves processing accuracy, and produces a beautiful back taper. This is a revolutionary saw blade taper processing device capable of processing.

Further, in the invention described in claim 8 , the R shape and depth of the back taper can be easily changed, and thereby desired back taper processing can be easily applied to saw blades of various shapes. This is a revolutionary saw blade taper processing device with excellent practicality.

It is a top view which shows a present Example. It is an explanatory top view which shows the cup-shaped grindstone of a present Example. It is explanatory side view which shows the saw blade support part and the steady rest support part of a present Example. Explanatory plan view showing the main part of the present embodiment It is explanatory sectional drawing which shows the shape before and after the process of the saw blade processed in the present Example. It is an explanatory top view which shows the rotary grindstone moving mechanism of a present Example. It is explanatory side sectional drawing which shows the rotary grindstone moving mechanism of a present Example. It is explanatory side sectional drawing which shows the saw blade moving mechanism of a present Example. It is explanatory front view which shows the steady rest support part of a present Example. It is explanatory side view which shows another example of the steady rest support part of a present Example. It is the figure which showed the movement locus | trajectory of the saw blade at the time of performing a back taper process using a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  In the present invention, the rotating grindstone 2 is disposed in an opposed state on both side surfaces of the saw blade 1 held in a standing state by the saw blade moving mechanism 3, and these are moved closer to the saw blade 1 by the rotating grindstone moving mechanism 6. Since both sides of the saw blade 1 are ground at the same time by a predetermined amount, the working efficiency is remarkably improved, and further, the balance in the thickness direction of the saw blade 1 is not lost and warping occurs during machining. In addition, machining accuracy is greatly improved.

  In addition, the present invention employs a cup-shaped grindstone 2 that grinds the rotating grindstone 2 by bringing the ring-shaped tip surface 5 into contact therewith, and the cup-shaped grindstone 2 is inclined with respect to the side surface of the saw blade 1 (plan view). 8), the side surface of the saw blade 1 can be ground into a large-arc shape with a small-diameter grindstone as compared with the case where a flat-shaped grindstone is employed and ground in an arc shape. Compactness can be achieved.

  The saw blade 1 being ground is held on one side in the length direction of the saw blade 1 by a saw blade moving mechanism 3 and on the other side in the length direction opposite to the side held by the saw blade moving mechanism 3. The saw blade support portion 4 is in contact with the lower end of the saw blade 1 closer to the saw blade moving mechanism 3 than the position supported by the steady rest support portion 7. It will be in the state where it was supported from the lower side, and, thereby, the run-out at the time of grinding will be controlled and it will be able to grind much more accurately.

  Furthermore, the present invention is configured such that the cup-shaped grindstone 2 abuts on both sides of the saw blade 1 positioned between the saw blade support portion 4 and the steady rest support portion 7 and is ground. The front and rear of the grinding position are supported, thereby suppressing the runout of the saw blade 1 during further grinding. In addition, the present invention provides a steady support portion 7 for supporting the saw blade 1 between the cup-shaped grindstones 2. Since it is disposed, the distance between the saw blade moving mechanism 3 that holds one side in the length direction of the saw blade and the steady rest support portion 7 that supports the other side in the length direction of the saw blade can be reduced, and grinding can be performed. The point between the saw blade support portion 4 and the steady rest support portion 7 that support the front and rear of the position is also narrowed, and the saw blade 1 can be supported more stably, which further increases the vibration of the saw blade during grinding. Suppressed, the processing accuracy is further improved and back taper processing with a beautiful finish can be performed. .

  As described above, the present invention provides a revolutionary saw-blade back taper processing apparatus with excellent practicality, which has extremely high working efficiency, excellent processing accuracy, and can greatly improve left-right symmetry accuracy.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, both sides of the saw blade 1 are ground with a rotating grindstone 2 so that the back side of the saw blade 1 is thinner than the blade portion, thereby reducing the frictional resistance with the cut surface of the workpiece. This is a saw blade taper processing device capable of simultaneously forming a taper on both side surfaces of the saw blade 1.

  Specifically, in this embodiment, as shown in FIGS. 1 to 3, the pair of rotating grindstones 2 and the saw blade 1 arranged in an opposed state are held in an upright state and held in the upright state. A saw blade moving mechanism 3 for moving the saw blade 1 in the front-rear direction and the vertical direction, and a lower end (lower edge) on the blade portion side of the saw blade 1 held upright by the saw blade moving mechanism 3 A saw blade support portion 4 for supporting the saw blade 1 in a standing state from the lower side, and a side of the saw blade 1 that is opposite to the side held by the saw blade moving mechanism 3 is supported from the side, and the saw blade 1 swings during grinding. It is set as the structure provided with the steadying support part 7 which suppresses.

  Below, each part which concerns on the back taper processing apparatus of a present Example is demonstrated in detail.

  As shown in FIG. 4, the rotating grindstone 2 of the present embodiment employs a pair of cup-shaped grindstones 2 that abut the ring-shaped tip surface 5 in contact with each other and grind each ring-shaped tip surface 5 inward. The structure is provided in the opposite state.

  Each cup-shaped grindstone 2 is inclined with respect to the side surface of the saw blade 1 held upright by a saw blade moving mechanism 3 to be described later. Specifically, the pair of cup-shaped grindstones 2 are viewed in plan view. More specifically, as shown in FIG. 4, the pair of cup-shaped grindstones 2 are wide in the direction opposite to the saw blade moving mechanism 3. It is set as the structure arrange | positioned so that it may become an 8-shaped inclination state in planar view.

  That is, in this embodiment, the pair of cup-shaped grindstones 2 are disposed in an inclined state with respect to the side surfaces of the saw blade 1 so that the ring-shaped tip surfaces 5 of the respective cup-shaped grindstones 2 are saw blades 1. Gradually approaching and abutting from the upper side or lower side to the side surface of the steel to perform grinding, the grinding depth increases as it proceeds in the grinding direction, and this grinding depth becomes deepest at a predetermined position and passes this predetermined position. Gradually move away from the side surface of the saw blade 1 and draw an arc-shaped grinding trajectory in which the grinding depth becomes shallower. The side surface of the saw blade 1 has a thickness as shown in FIG. It is configured to grind in an arc shape with respect to the direction.

  In addition, the pair of cup-shaped grindstones 2 disposed in an inclined state with respect to the side surface of the saw blade 1 has a respective ring-shaped tip surface 5 formed in a tapered shape as shown in FIG. The area abutting on the side surface is widened to enable efficient grinding.

  The cup-shaped grindstone 2 of this embodiment is generally referred to as a cup-shaped grindstone 2 because the grindstone portion includes not only a cup-shaped grindstone but also a ring-shaped grindstone.

  The pair of cup-shaped grindstones 2 arranged in the inclined state are configured so that the inclination angle with respect to both side surfaces of the saw blade 1 can be freely adjusted by the rotating grindstone moving mechanism 6, respectively. It is set as the structure which can move to the axial direction of the rotating shaft of the grindstone 2 so that advancement / retraction is possible.

  Specifically, the rotating grindstone moving mechanism 6 includes a cup-shaped grindstone support portion 12 that supports the cup-shaped grindstone 2, and a cup-shaped grindstone moving base portion 14 on which the cup-shaped grindstone support portion 12 rotates. The wheel wear amount detection sensor 11 for measuring the position of the ring-shaped tip surface 5 of the cup-shaped grindstone 2 and the NC device for controlling the movement of the wheel wear amount detection sensor 11 and the cup-shaped grindstone support portion 12 are configured. And each cup-shaped grindstone 2 is provided independently.

  More specifically, as shown in FIG. 6, the cup-shaped grindstone support portion 12 is pivotally attached to a rotation fulcrum portion 16 that is a rotation fulcrum when the cup-shaped grindstone support portion 12 is rotated. A pivot mounting portion 17 and a drive mechanism connecting portion 19 connected to a grindstone support portion driving mechanism 18 constituted by a drive portion 18a for rotating the cup-shaped grindstone support portion 12 and a ball screw 18b are provided. The pivoting portion 17 is pivotally attached to the rotating fulcrum portion 16 disposed just below the position where the cup-shaped grindstone 2 is ground with respect to the saw blade 1, and the drive mechanism connecting portion 19 is connected to the grinding wheel support portion driving mechanism 18. The drive mechanism connecting portion 19 is pushed and pulled by driving the grindstone support portion driving mechanism 18 so as to rotate on the cup-shaped grindstone moving base portion 14.

  The grindstone support portion drive mechanism 18 may be configured to manually operate the ball screw 18b without using the drive portion 18a.

  Further, the cup-shaped grindstone support portion 12 of the present embodiment is rotated and moved by the grindstone support portion drive mechanism 18 to adjust the angle, and then the cup-shaped grindstone moving base is fixed by a fixture 15 (bolt, nut). The structure is fixed to the part 14.

  Reference numeral 13 in the drawing denotes a bolt insertion hole for inserting the bolt of the fixture 15.

  Furthermore, this cup-shaped grindstone support portion 12 is configured to have a cup-shaped grindstone placement portion 20 for placing the cup-shaped grindstone 2 on the upper portion, and this cup-shaped grindstone placement portion 20 is composed of a cup-shaped grindstone support portion. 12, the cup-shaped grindstone 2 provided in the cup-shaped grindstone mounting portion 20 is configured to be movable back and forth in the axial direction.

  Specifically, as shown in FIG. 7, the cup-shaped grindstone placing portion 20 has a configuration in which a slide rail portion 21 is provided at the bottom, and the slide rail portion 21 is provided on the cup-shaped grindstone support portion 12. The cup-shaped grindstone placement portion 20 is engaged with the guide portion 22 and can be moved forward and backward along the slide guide portion 22, and the cup-shaped grindstone placement portion 20 includes a drive portion 23a and a ball screw 23b. It is configured to be moved by the table drive mechanism 23.

  Further, the grinding wheel wear amount detection sensor 11 employs a non-contact type air sensor, and as shown in FIG. 2, a ring-shaped tip serving as a use surface of the cup-shaped grinding wheel 2 is provided so as to be rotatable and adjustable in angle. The position of the ring-shaped tip surface 5 of the cup-shaped grindstone 2 is measured by arranging the tip portion 11a of the grinding wheel wear amount detection sensor 11 so as to be orthogonal to the surface 5.

  Specifically, the distance between the tip 11a of the grinding wheel wear amount detection sensor 11 at a predetermined position, for example, the standby position (zero position) of the cup-shaped grindstone 2, and the ring-shaped tip surface 5 of the cup-shaped grindstone 2 is measured. The amount of wear of the cup-shaped grindstone 2 is calculated from the change in the interval, and the amount of movement of the cup-shaped grindstone 2 to both sides of the saw blade 1 according to the amount of wear of the cup-shaped grindstone 2, that is, the cup-shaped grindstone 2 is ground. The movement amount when moving the cup-shaped grinding wheel mounting portion 20 on which the cup-shaped grinding wheel 2 is placed to the position to the saw blade 1 side is automatically corrected so that there is no variation in the grinding amount. It is configured so that back taper processing can be performed continuously with high accuracy.

  The automatic correction of the movement amount of the cup-shaped grindstone mounting portion 20 by the grindstone wear amount detection sensor 11 is controlled by the NC device.

  The saw blade moving mechanism 3 includes a saw blade holding section 9 that holds the saw blade 1 in an upright state, a longitudinal direction that corresponds to the length direction of the saw blade 1 that is held by the saw blade holding section 9, and a saw blade. A moving unit 10 provided so as to be movable in a vertical direction that is perpendicular to the length direction of the body 1 and the movement of the moving unit 10 are controlled, and the moving unit 10 is linearly matched to the shape of the saw blade 1 Or it is comprised with the movement control part moved to a curve.

  Specifically, as shown in FIG. 8, the saw blade holding portion 9 has a configuration in which an open / close holding portion 9a configured to be freely opened and closed by a cylinder mechanism is provided at the tip portion, and the open / close holding portion 9a provides a saw blade 1 The saw blade 1 is held upright and the saw blade 1 is held upright.

  Further, as shown in FIG. 8, the moving unit 10 has a structure in which a slider unit 26 that engages with a slide rail unit 25 provided on a saw blade moving base unit 24 is provided at the bottom. It is configured to be engaged with the slide rail portion 25 of the saw blade moving base portion 24 so as to be movable back and forth along the slide rail portion 25. In this embodiment, the moving portion 10 includes a driving portion 27a and a driving portion 27a. It is configured to move by a moving part drive mechanism 27 constituted by a ball screw 27b.

  Furthermore, the moving part 10 has a configuration in which a saw blade holding part mounting part 28 for mounting the saw blade holding part 9 described above is provided on the front part, and the saw blade holding part mounting part 28 is connected to the moving part 10. The moving unit 10 is configured to be movable in the vertical direction, which is the height direction.

  Specifically, the saw blade holding portion mounting portion 28 is provided with a connecting portion 29 that continuously connects the saw blade holding portion 9 at the front portion and a slide rail portion 30 provided at the front portion of the moving portion 10 at the back portion. And a configuration in which the slider portion 31 is provided so as to be movable up and down along the slide rail portion 30 by engaging the slider portion 31 with the slide rail portion 30 provided in the moving portion 10. In this embodiment, the saw blade holding portion mounting portion 28 is moved by a saw blade holding portion driving mechanism 32 constituted by a driving portion 32a and a ball screw 32b. Both the movement and the forward / backward movement of the moving unit 10 are controlled by the NC device.

  Further, the moving unit 10 of the present embodiment can perform a combined operation in which the movement of the moving unit 10 in the front-rear direction and the movement of the saw blade holding unit mounting unit 28 in the vertical direction are performed simultaneously by the control of the NC device. The saw blade 1 held on the saw blade holding portion 9 is linearly moved in an oblique direction or curved so as to draw an arc by a combined movement operation of the forward / backward movement and the vertical movement. It is configured to be able to be moved to.

  Further, as shown in FIG. 3, the saw blade support portion 4 has a configuration in which a roller portion 8 is provided at the upper portion, and this roller portion 8 is brought into contact with the lower end on the blade portion side of the saw blade 1 from below. The saw blade 1 is configured to be supported, and when the saw blade 1 is ground from the back side to the blade portion side, the downward movement of the saw blade 1 that is biased to move downward is suppressed. The position (position in the height direction of the deepest grinding portion) is not displaced.

  In the present embodiment, the roller portion 8 is configured to be freely rotatable. For example, the roller portion 8 is configured to rotate in conjunction with the saw blade moving mechanism 3, specifically the moving portion 10 moving forward and backward. It is also good.

  Moreover, it is good also as a structure which provided the plate-shaped super hard chip | tip instead of this roller part 8. FIG.

  Further, the saw blade support portion 4 is provided on a support base portion 33 provided so as to be movable up and down, and is provided so as to be movable in the vertical direction by the vertical movement of the support base portion 33 so as to be adjustable in height. Yes.

  Furthermore, in this embodiment, the saw blade support portion 4 is positioned between the handle portion side of the saw blade 1 held by the saw blade moving mechanism 3 and the position where the cup-shaped grindstone 2 abuts against the saw blade 1 and grinds. The saw blade support portion 4 is disposed close to the cup-shaped grindstone 2 to support the vicinity of the grinding position of the saw blade 1 so that the saw blade 1 can be prevented from shaking during grinding. The structure is designed to improve.

  The support base 33 is moved by a support base drive mechanism 34 composed of a drive part 34a and a ball screw 34b. The vertical movement of the support base drive mechanism 34 is the same as other drive mechanisms. In addition, it is configured to be controlled by the NC device.

  Further, as shown in FIGS. 3 and 9, the steady rest support part 7 is configured to include an open / close clamping part 35 configured to be freely opened and closed by a cylinder mechanism and an auxiliary roller part 36 configured to be freely rotatable, The saw blade 1 is supported by the opening / closing sandwiching portion 35 so as to be sandwiched from both sides, and the front side of the portion supported by the opening / closing sandwiching portion 35 by the auxiliary roller portion 36 is supported by the saw blade support portion 4 from the lower side. It is configured to support as a role.

  Specifically, the cup-shaped grindstone 2 of the saw blade 1 is arranged so that the open / close clamping portion 35 for supporting the saw blade 1 and the auxiliary roller portion 36 are located between the cup-shaped grindstones 2 disposed in opposition to each other. It is configured so as to support the tip side (the opposite side to the handle portion side) of the grinding position to be ground with, and is provided on the support base portion 33 provided with the saw blade support portion 4, like the saw blade support portion 4. It is configured to be provided so as to be movable in the vertical direction by the vertical movement of the support base 33 and to be adjustable in height.

  That is, in this embodiment, the steady rest support portion 7 and the saw blade support portion 4 described above are provided on the same support base portion 33, and the support base portion 33 is moved up and down at the same time by the vertical movement of the support base portion 33. The positional relationship (height relationship) between the roller portion 8 of the saw blade support portion 4 and the auxiliary roller portion 36 of the steady motion support portion 7 is not changed. The tip side from the grinding position is supported, and the saw blade support portion 4 supports the handle portion side from the grinding position of the saw blade 1 so that the two points sandwiching the grinding position of the saw blade 1 are always from the lower side. Supports the downward bias of the saw blade 1 and suppresses the swing of the saw blade 1 in the vertical direction, and further supports the saw blade 1 from both sides by the steady support portion 7 in the left-right direction. Suppressing run-out prevents the reduction in machining accuracy due to run-out during grinding, and the occurrence of run-out of the saw blade 1 is effective. It has a configuration capable of preventing uneven wear of the cup-shaped grindstone 2 that.

  Note that the steady rest support portion 7 shown in FIG. 3 shows the steady rest support portion 7 used when the shape of the saw blade 1 is a linear shape, and the open / close clamping portion 35 of the steady rest support portion 7 is provided. The mounting portion 37 to which the opening / closing clamping portion 35 is attached has a right-angled shape so that the horizontal direction is the same as the moving direction of the saw blade 1, and the steady rest support portion 7 in FIG. The anti-rest support portion 7 used in the case where the saw blade 1 has a curved shape is shown, and the open / close clamping portion 35 of the anti-rest support portion 7 is in the same direction as the moving direction of the saw blade 1. The mounting portion 37 to which the opening / closing pinching portion 35 is attached is formed in a dogleg shape (a round shape) so as to be in an inclined state.

  In addition, although not illustrated, this embodiment has a configuration including a stocker unit, a saw blade supply mechanism, and a saw blade discharge mechanism for unattended back taper processing.

  The operation and effect of the present embodiment configured as described above will be described along the back taper processing procedure using the present embodiment.

  First, the cup-shaped grindstone 2 is adjusted to a desired angle, and after the adjustment, the fixture 15 is positioned and fixed.

  Next, the position of the ring-shaped tip surface 5 of each cup-shaped grindstone 2 is measured by the grindstone wear amount detection sensor 11, and the saw blade holding portion 9 of the saw blade moving mechanism 3 is a non-grinding portion of the saw blade 1. The handle portion side is clamped, and the saw blade 1 is held upright.

  By holding the saw blade 1 on the saw blade moving mechanism 3, the saw blade 1 is in the longitudinal direction of the saw blade 1 with respect to the cup-shaped grindstone 2 and in a direction perpendicular to the length direction. It is possible to move freely in a certain vertical direction, and further, it can move linearly in an oblique direction or move in a curved line so as to draw an arc by moving in a complex manner in the front-rear direction and the vertical direction. This enables not only saw blades formed in a straight shape with a constant width (height), but also saw blades formed in a curved shape or shapes with a non-constant width, for example, the width gradually becomes wider. Back taper processing can be easily performed at a predetermined position with respect to saw blades of various shapes such as a saw blade formed into a shape.

  The saw blade 1 held in the standing state is moved to the grinding position by the saw blade moving mechanism 3 controlled by the NC device.

  The saw blade 1 that has moved to this grinding position is supported by the roller portion 8 of the saw blade support portion 4 and the steady rest support portion 7 at the lower end in the front-rear direction where the cup-shaped grindstone 2 grinds the side surface of the saw blade 1. It is supported by the roller portion 36, and further, the tip end side is supported in a sandwiched state from both side surfaces by the opening / closing sandwiching portion 35 of the steady rest support portion 7.

  In addition, the saw blade support portion 4 and the steady rest support portion 7 that support the saw blade 1 are rings of each cup-shaped grindstone 2 that are disposed in an inclined state before or while the saw blade 1 is supported. As shown by a one-dot chain line in FIG. 11, the portion closest to the side surface of the saw blade 1 on the front end surface 5 is closer to the back portion than the center portion of the saw blade 1 (intermediate position between the back portion side and the blade portion side). The height is adjusted so as to abut.

  The saw blade 1 moved to the grinding position and supported by the saw blade support portion 4 and the steady rest support portion 7 is laterally moved to the side of the saw blade 1 based on the result measured by the grinding wheel wear amount detection sensor 11. On the other hand, each cup-shaped grindstone 2 disposed in an inclined state moves by a predetermined amount while rotating, and simultaneously abuts on both side surfaces of the saw blade 1 to simultaneously grind both side surfaces of the saw blade 1.

  At this time, in the present embodiment, the cup-shaped grindstone 2 is inclined with respect to the side surface of the saw blade 1 as described above. Grinding into a circular arc as a rotating track, the saw blade 1 thus ground has a shape as shown in FIG.

  In addition, as described above, since the present embodiment simultaneously grinds both side surfaces of the saw blade 1 with the pair of cup-shaped grindstones 2, the working efficiency is remarkably improved, and the balance of the thickness of the saw blade 1 is lost. Therefore, no warpage occurs during processing, and the processing accuracy is remarkably improved.

  Further, the saw blade moving mechanism 3 moves backward as the grinding starts, and the saw blade 1 is ground while moving in the pulling direction.

  In this embodiment, since the leading end side of the saw blade 1 moving in the pulling direction is supported by the steady support 7, the saw blade 1 is moved by moving the saw blade 1 in the pulling direction. A tensile biasing force is generated in the length direction, and the pulling biasing further suppresses vibration during grinding and improves machining accuracy.

  Note that the saw blade 1 having a curved shape or a shape whose width (height direction) changes in the length direction, the saw blade moving mechanism 3 moves rearward while the saw blade moving mechanism 3 moves backward. Move in the vertical direction according to the shape.

  Further, during grinding of the saw blade 1, the cup-shaped grindstone 2 is ground (rotated) from the back side to the blade portion of the saw blade 1, so that the saw blade 1 is biased to move downward. In the present embodiment, the saw blade 1 that is biased to move downward is supported by the saw blade support portion 4 and the auxiliary roller portion 36 of the steady rest support portion 7 from the lower side. The reference position in the height direction is maintained without shifting 1 downward.

  Further, during this grinding, the saw blade 1 is shaken (vibrated). In this embodiment, the saw blade 1 is assisted by the saw blade support portion 4 and the steady rest support portion 7 by the downward bias. The roller portion 36 is in a pressed state, thereby suppressing vertical deflection, and further by supporting the saw blade 1 from both sides with the open / close clamping portion 35 of the steady support portion 7 in the horizontal direction. The shake (vibration) is suppressed.

  That is, in this embodiment, the vibration of the saw blade 1 that is being ground as much as possible is obtained by the interaction between the suppression of the vibration due to the above-described pulling bias and the suppression of the vibration due to the saw blade support portion 4 and the anti-rest support portion 7. The configuration is configured to suppress the occurrence of runout, so that the grinding accuracy does not decrease due to runout, and the machining accuracy is remarkably improved as compared with the conventional device. Since wear can also be prevented, the life of the cup-shaped grindstone 2 can be extended.

  Further, in this embodiment, the saw blade support 4 and the steady support 7 are provided so as to be movable in the vertical direction. Therefore, the saw support 4 and the steady support 7 are connected to the saw moving mechanism. In addition to the saw blade formed in a linear shape having a constant width (height) by moving up and down in accordance with the up and down motion of 3, the shape of the saw blade formed in a curved shape and a shape having a non-constant width, for example, gradually Since the saw blade 1 can always be supported from the lower side with respect to various shapes of saw blades, such as a saw blade having a wide width, the shape of the saw blade 1 can be changed. Therefore, it is possible to suppress the runout of the saw blade 1 satisfactorily, and to realize a revolutionary saw blade back taper processing device excellent in practicality capable of maintaining good processing accuracy.

  Furthermore, in the present embodiment, the steady rest support portion 7 for suppressing the run-out during grinding of the saw blade 1 is arranged between the pair of cup-shaped grindstones 2 arranged in an opposed state. The space between the saw blade support portion 4 and the steady rest support portion 7 can be reduced, and the distance between the two points supported by these can be reduced, so that the saw blade 1 can be ground. Innovative saw blade that can support close parts intensively, which further suppresses saw blade run-out during grinding, further improves processing accuracy, and provides a beautifully finished back taper. The back taper processing apparatus.

  Further, in this embodiment, since the saw blade support portion 4 that supports the saw blade 1 from below is supported by the roller portion 8, the lower end forming the blade portion of the saw blade 1 is cut without scratching. The saw body 1 can be moved in the pulling direction while supporting the body 1, and the saw body 1 can be moved more smoothly, whereby the saw body 1 is moved (pulled) with respect to the saw body support portion 4. It is an epoch-making saw blade back taper processing device in which the contact resistance is reduced, no vibration due to resistance occurs, and the processing accuracy can be further improved.

  As described above, this embodiment has extremely high back taper working efficiency, is excellent in processing accuracy, and can greatly improve the left-right symmetry accuracy, and can be applied to saw blades 1 of various shapes. It is an epoch-making saw blade back taper processing device with excellent practicality that can easily perform back taper processing.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Saw blade 2 Rotating whetstone, cup-shaped whetstone 3 Saw blade moving mechanism 4 Saw blade support part 5 Ring-shaped front end surface 6 Rotating whetstone moving mechanism 7 Stabilization support part 8 Roller part 9 Saw body holding part
10 Moving part
11 Grindstone wear amount detection sensor

Claims (8)

Both sides of the saw blade are ground with a rotating grindstone so that the back side of the saw blade is thinner than the blade portion, and a back taper is formed in the saw blade to reduce frictional resistance against the cut surface of the workpiece. A saw blade back taper processing device, wherein the saw blade is held in an upright state , and the saw blade held in the standing state is a longitudinal direction of the saw blade with respect to the rotating grindstone, and A saw blade moving mechanism configured to be movable in the front-rear direction and the vertical direction, which are relatively moved in the up-down direction , which is a direction perpendicular to the length direction, and the saw blade in contact with the blade portion or the back portion of the saw blade. And the rotating grindstones are arranged in opposite states on both side surfaces of the saw blade moved by the saw blade moving mechanism, and the rotating grindstones are respectively cup-shaped or ring-shaped. A grinding wheel that grinds with the ring-shaped tip surface in contact. The cup-shaped grindstone is arranged in an inclined state with respect to both side surfaces of the saw blade, and the side surface of the saw blade is ground in an arc shape in the thickness direction of the saw blade. In addition, the portion of the ring-shaped tip surface of the cup-shaped grindstone disposed in the inclined state closest to the side surface of the saw blade abuts closer to the back side than the center portion of the saw blade. The contact position is configured to be the thinnest, and is configured to approach and contact the saw blade by a rotating grindstone moving mechanism to grind both sides of the saw blade simultaneously by a predetermined amount. In the meantime, there is provided an anti-slip support portion for supporting the side surface of the saw blade to suppress the vibration of the saw blade during grinding, and one side in the length direction of the saw blade disposed in the standing state is the saw blade Length of the saw blade held by the moving mechanism and one side held by the saw blade moving mechanism The other side is supported in a clamped state by the steady rest support portion, and the saw blade support portion is brought into contact with the lower end of the saw blade on the saw blade moving mechanism side from the position supported by the steady rest support portion. The saw blade is supported from the lower side, and the cup-shaped grindstone is configured to contact both side surfaces of the saw blade located between the saw blade support portion and the steady rest support portion. A saw blade back taper processing device. The saw blade support portion has a configuration in which a roller portion is provided at a tip portion, the roller portion is brought into contact with a lower end of the saw blade, and the saw blade moving by the saw blade moving mechanism is viewed from below. 2. The saw blade taper processing device according to claim 1, wherein the device is configured to support the saw blade. The saw blade back taper processing apparatus according to any one of claims 1 and 2 , wherein the saw blade support portion is configured to be movable in the vertical direction. The saw blade held in an upright state by the saw blade moving mechanism is configured to cut both side surfaces of the saw blade simultaneously with the cup-shaped grindstone while being pulled toward the saw blade moving mechanism side. The saw blade taper processing device according to any one of claims 1 to 3 . The saw blade moving mechanism includes a saw blade holding portion that holds the saw blade in an upright state, a longitudinal direction that is a length direction of the saw blade that is held by the saw blade holding portion, and the length direction. A moving unit provided so as to be movable in a vertical direction, which is an orthogonal direction, and a movement control unit that controls the movement of the moving unit and moves the moving unit linearly or in a curve according to the shape of the saw blade; The saw blade back taper processing device according to any one of claims 1 to 4 , wherein The rotary grindstone moving mechanism has a grindstone wear amount detection sensor for measuring the position of the ring-shaped tip surface of the cup-shaped grindstone, and moves to both sides of the saw blade of the cup-shaped grindstone according to the detected grindstone wear amount. 6. The saw blade taper processing apparatus according to claim 1 , wherein the movement amount of the saw blade is automatically corrected. The saw back back taper processing device according to any one of claims 1 to 6 , wherein the steady rest support portion is disposed between the cup-shaped grindstones disposed in an opposing state. The said cup-shaped grindstone was comprised so that the inclination angle with respect to the both sides | surfaces of the said saw blade could be freely adjusted with the said rotating grindstone moving mechanism, The any one of Claims 1-7 characterized by the above-mentioned. Saw-back taper processing device.

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