JP2016140945A - Grinding device for weld reinforcement portion of weld bead - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grinding device for a weld reinforcement portion of a weld bead which can easily and reliably flatten the weld reinforcement portion of the weld bead irrespective of a direction of the weld bead and independent of a skill of an operator and, moreover, has simple structure.SOLUTION: The grinding device for a weld reinforcement portion of a weld bead is comprised of : a frame 3 which is fastened attachably and detachably to an object 1 to be ground with a weld bead 2 formed therein, using a clamp 4; a rail 5 for base movement which is attached to the frame 3; a base 6 attached to the rail 5 for base movement movably along the rail 5 for base movement; a base plate 8 attached to the base 6 movably in a direction orthogonal to the rail 5 for base movement; a grinder securing member 11 attached to an edge of the base plate 8 movably in a direction orthogonal to the base plate 8; and a grinder 19 which is attached to the grinder securing member 11 and includes a disk-like grindstone 21. The grinder 19 is attached to the grinder securing member 11 rotatably around a screw 23 for a rotation shaft orthogonal to the rail 5 for base movement, as a center.SELECTED DRAWING: Figure 1

Description

  This invention is a welding bead surplus portion grinding device, in particular, it is possible to easily and reliably flatten the weld bead surplus portion regardless of the skill of the operator, regardless of the orientation of the weld bead, The present invention relates to a weld bead grinding apparatus having a simple structure.

  An example of a weld bead surplus portion grinding apparatus for flatly grinding a surplus portion of a weld bead is disclosed in Patent Document 1. Hereinafter, this surplus portion grinding apparatus is referred to as a conventional grinding apparatus 1.

  The conventional grinding apparatus 1 is an apparatus that automatically guides a surplus portion of a weld bead to a flat surface by fixing guide means to a steel plate surface on which a weld bead is formed, moving a grinding machine body along the guide means. is there.

  Another weld bead grinding device for weld beads is disclosed in Patent Document 2. Hereinafter, this surplus portion grinding apparatus is referred to as a conventional grinding apparatus 2.

  The conventional grinding device 2 automatically moves the grinder body that can automatically apply the grinder's grindstone to the surplus portion of the weld bead at an arbitrary angle along the guide rail, and automatically flattens the surplus portion. It is a device to grind.

JP-A-9-192914 JP-A-9-131655

  According to the conventional grinding apparatuses 1 and 2 described above, the surplus portion of the weld bead can be ground flat, but there are the following problems.

  Since the conventional grinding apparatus 1 cannot perform a delicate position adjustment of the grinding machine main body manually, it is necessary to reset the grinding machine main body every time a failure occurs in grinding of the surplus portion. As a result, labor and time are required for grinding the surplus portion.

  On the other hand, since the conventional grinding device 2 can automatically apply the grinder's grindstone to the surplus portion at an arbitrary angle, the surplus portion can be easily ground flatly. Is complicated, the grinding apparatus becomes expensive.

  Accordingly, an object of the present invention is to make it possible to easily and surely flatten the surplus portion of the weld bead regardless of the skill of the operator, regardless of the direction of the weld bead, and to have a simple structure and with a simple structure. It is in providing the surplus part grinding apparatus.

  The present invention has been made to achieve the above object, and is characterized by the following.

  The invention according to claim 1 is a platform that is removably fixed to a grinding object on which a weld bead is formed, a base moving rail that is attached to the base, and the base moving rail. A base movably attached along a base movement rail, a substrate attached to the base movably in a direction perpendicular to the base movement rail, and the substrate on one end of the substrate A grinder fixing member attached to be movable in an orthogonal direction, and a grinder having a disk-shaped rotating grindstone attached to the grinder fixing member. The grinder is orthogonal to the base moving rail. It is characterized by being attached to the grinder fixing member so as to be rotatable about an axis.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the gantry is detachably fixed to the grinding object by a clamp attached to an end of the gantry. It is.

  The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, a grip for moving the grinder by hand is attached to the grinder fixing member.

  The invention described in claim 4 is the invention described in claim 3, wherein the grinder fixing member is movable in a direction orthogonal to the substrate together with the grinder by rotating the grip around an axis. It has the characteristics.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the substrate can be fixed to the base at an arbitrary position in a direction orthogonal to the rail for moving the base. It is characterized by being.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein two of the base movement rails are attached in parallel to the frame, and two of the bases are It is characterized by being mounted across the base moving rail.

  According to the present invention, after fixing the gantry to a predetermined position of the object to be ground and applying the grinder's grindstone to the weld bead, the grip of the grinder fixing member is grasped by hand, and the base is moved together with the grinder to the base. Since the surplus portion of the weld bead can be ground only by being moved along the rail, no special skill of the operator is required.

  Moreover, according to this invention, since a mount frame can be fixed to a grinding target object with a clamp, it can grind an extra portion irrespective of the direction of a weld bead.

  Moreover, according to this invention, since a board | substrate can be moved to the direction orthogonal to the rail for base movement, even if a weld bead width | variety is wide, a surplus part can be grind | polished reliably reliably.

Further, according to the present invention, since the grinder is attached to the grinder fixing member so as to be rotatable about an axis perpendicular to the rail for moving the base, the extra portion is always ground by the corner portion of the grindstone having a good cutting condition. can do.
Further, according to the present invention, since a complicated operation mechanism or the like of the grinder is unnecessary, the structure of the grinding apparatus can be simplified. As a result, the price of the grinding device can be reduced.

It is a perspective view which shows the surplus part grinding | polishing apparatus of the weld bead of this invention fixed to the grinding target object. It is a disassembled perspective view which shows the surplus part grinding apparatus of the weld bead of this invention. It is a front view which shows the angle relationship between a weld bead and a grinder.

  An embodiment of the weld bead excess grinding apparatus of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a weld bead surplus portion grinding apparatus of the present invention fixed to a grinding object, and FIG. 2 is an exploded perspective view showing a weld bead surplus portion grinding apparatus of the present invention. It is.

  1 and 2, reference numeral 1 denotes an object to be ground on which a weld bead 2 is formed. Reference numeral 3 denotes a gantry with a screw clamp 4 attached to the end. The gantry 3 is detachably fixed to the grinding object 1 by a clamp 4. Reference numeral 5 denotes a base moving rail attached on the gantry 3, and two rails are attached along the longitudinal direction of the gantry 3 in parallel.

  A base 6 is attached to the base moving rail 5 so as to be movable along the base moving rail 5, and is attached across the two base moving rails 5. On both sides of the base 6 in the width direction, guides 7 into which a substrate 8 described later is movably inserted are formed.

  Reference numeral 8 denotes a substrate attached to the base 6 so as to be movable in a direction perpendicular to the base moving rail 5. The substrate 8 is movably inserted into the guide 7 of the base 6. A long hole 9 is linearly formed in the substrate 8 along a direction orthogonal to the base moving rail 5. A screw 10 is passed through the long hole 9, and the screw 10 is screwed into the base 6. The substrate 8 can be fixed to the base 6 at an arbitrary position within the length range of the long hole 9 by tightening the screw 10.

  A grinder fixing member 11 is attached to one end of the substrate 8 so as to be movable in a direction orthogonal to the substrate 8. As shown in FIG. 2, the grinder fixing member 11 is fixed to the inner cylinder 12 fixed to the substrate 8, the outer cylinder 13 having a lid member 13 a fitted on the outer side of the inner cylinder 12, and the outer cylinder 13. It consists of a fixture 14 and a grip 15 fixed to a male screw rod 16 described later.

  A female screw 12 a is formed at the center of the inner cylinder 12, and a groove 12 b is formed on the outer peripheral surface of the inner cylinder 12 along the longitudinal direction of the inner cylinder 12.

  A male screw rod 16 is inserted into the center of the outer cylinder 13 through the lid member 13a. The male screw rod 16 is rotatable with respect to the lid member 13a, but is attached to the lid member 13a so as not to come out of the lid 13a. On the inner peripheral surface of the outer cylinder 13, a protrusion 13 b that fits into the groove 12 b of the inner cylinder 12 is formed along the longitudinal direction of the outer cylinder 13.

  The fixing bracket 14 includes a ring member 17 fixed to the outer cylinder 13 and a fixing plate 18 attached to a grinder bracket 22 described later.

  The grinder fixing member 11 moves in the direction orthogonal to the substrate 8 as follows.

  When the grip 15 is rotated about its axis, the male threaded rod 16 rotates within the female thread 12 a of the inner cylinder 12. As a result, the outer cylinder 13 moves in and out of the inner cylinder 12, and the grinder fixing member 11 moves in a direction orthogonal to the substrate 8. At this time, since the protrusion 13b of the outer cylinder 13 is fitted into the groove 12b of the inner cylinder 12 and slides, the outer cylinder 13 only enters and exits the inner cylinder 12 and does not rotate.

  Reference numeral 19 denotes a grinder, which includes a grinder main body 20 and a disk-shaped rotary grindstone 21 attached to the grinder main body 20. A bracket 22 is fixed to the grinder body 20 with screws 20a. The bracket 22 is attached to the fixing plate 18 of the fixing bracket 14 with a rotating shaft screw 23. Thus, the grinder 19 is attached to the grinder fixing member 11 via the bracket 22 so as to be rotatable about the rotary shaft screw 23. An arc-shaped long hole 22 a is formed in the bracket 22, and a fixing screw 24 is inserted into the long hole 22 a and a bolt hole 18 a formed in the fixing plate 18. Accordingly, the grinder 19 can be fixed to the fixing plate 18 by the fixing screw 24 at an arbitrary position within the length range of the long hole 22a. The direction of rotation of the grindstone 21 is rotated outward (in the direction of the arrow in FIG. 1) so that sparks during grinding are not applied to the operator.

  Since the rotary shaft screw 23 is orthogonal to the base moving rail 5, as shown in FIG. 3, the contact angle (θ) between the grindstone 21 of the grinder 19 and the weld bead 2 is the same as that of the long hole 22a. It can be freely adjusted within the range of the length. As a result, it is possible to grind the surplus portion of the weld bead 2 at the corner portion of the grindstone 21 that is always well cut. The height adjustment of the grindstone 21 when the contact angle (θ) between the grindstone 21 and the weld bead 2 is changed can be easily performed by rotating the grip 15 and moving the grinder fixing member 11 up and down.

  According to the weld bead surplus portion grinding apparatus of the present invention configured as described above, the surplus portion of the weld bead formed on the object to be ground is ground flat as follows. Can do.

  As shown in FIG. 1, a gantry 3 is fixed to a grinding object 1 with a clamp 4. The orientation of the gantry 3 is adjusted to be parallel to the weld bead 2.

  Next, the grindstone 21 of the grinder 19 is applied to the weld bead 2 and the grindstone 21 is rotated. The optimum contact angle (θ) between the grindstone 21 and the weld bead 2 is adjusted by loosening the rotary shaft screw 23, and the height of the grindstone 21 is adjusted by rotating the grip 15.

  Next, the grip 15 is grasped by hand, and the base 6 is moved along the base moving rail 5 together with the grinder 19. Thereby, the surplus portion of the weld bead 2 is ground by the grindstone 21. Since the grindstone 21 rotates to the outside, there is no possibility that sparks during grinding will be applied to the operator. In the case where the surplus portion is not flatly ground by a single movement of the grinder 19, the screw 10 is loosened and the grinder 19 and the base plate 8 are orthogonal to the base moving rail 5, that is, the width direction of the weld bead 2. And then grind again.

  In this way, the surplus portion of the weld bead 2 can be ground flat. When the cutting condition of the grindstone 21 decreases during grinding, the contact angle (θ) is adjusted together with the height of the grindstone 21.

  This example is a case where the weld bead 2 is formed horizontally on the object 1 to be ground, but even if it is formed vertically, by similarly changing the fixing posture of the gantry 3 to the vertical, The surplus portion can be ground.

  As described above, according to the present invention, after the gantry 3 is fixed to the predetermined position of the grinding object 1 by the clamp 4 and the grindstone 21 of the grinder 19 is applied to the weld bead 2, the grinder fixing member 11, the extra portion of the weld bead 2 can be ground by simply moving the base 6 together with the grinder 19 along the rail 5 for moving the base. Does not require skill.

  Moreover, according to this invention, since the mount frame 3 can be fixed to the grinding object 1 by the clamp 4, it is possible to grind the extra portion regardless of the direction of the weld bead 2.

  Moreover, according to this invention, since the board | substrate 8 can be moved to the direction orthogonal to the rail 5 for base movement, even if the width | variety of the weld bead 2 is wide, it can grind | polish a surplus part reliably flatly. it can.

  Further, according to the present invention, the grinder 19 is attached to the grinder fixing member 11 so as to be rotatable about an axis (rotary shaft screw 23) orthogonal to the base moving rail 5, so that the cutting condition is always good. The surplus portion can be ground at the corner portion of the grindstone 21.

  Further, according to the present invention, since a complicated operation mechanism or the like of the grinder 19 is unnecessary, the structure of the grinding apparatus can be simplified. As a result, the price of the grinding device can be reduced.

1: Grinding object 2: Weld bead 3: Base 4: Clamp 5: Rail for moving base 6: Base 7: Guide 8: Substrate 9: Long hole 10: Screw 11: Grinder fixing member 12: Inner cylinder 12a: Female screw 12b: Groove 13: Outer tube 13a: Lid member 13b: Projection 14: Fixing bracket 15: Grip 16: Male screw rod 17: Ring member 18: Fixing plate 18a: Bolt hole 19: Grinder 20: Grinder body 20a: Screw 21 : Grinding wheel 22: Bracket 22a: Long hole 23: Screw for rotating shaft 24: Screw for fixing

Claims (6)

  A base that is detachably fixed to a grinding object on which a weld bead is formed, a base moving rail attached to the base, and a base moving rail that is movable along the base moving rail. A base attached to the base, a substrate attached to the base so as to be movable in a direction perpendicular to the rail for moving the base, and attached to one end of the substrate so as to be movable in a direction perpendicular to the substrate. And a grinder equipped with a disc-shaped rotary grindstone attached to the grinder fixing member, the grinder being rotatable about an axis orthogonal to the base moving rail. An extra-grinding part grinding device for a weld bead, characterized in that it is attached to a fixing member.   2. The surplus portion grinding apparatus for a weld bead according to claim 1, wherein the frame is detachably fixed to the object to be ground by a clamp attached to an end of the frame.   The extra grinding unit for welding bead according to claim 1 or 2, wherein a grip for manually moving the grinder is attached to the grinder fixing member.   4. The surplus portion of the weld bead according to claim 3, wherein the grinder fixing member is movable in a direction orthogonal to the substrate together with the grinder by rotating the grip about an axis. 5. Grinding equipment.   5. The welding bead according to claim 1, wherein the substrate is fixable to the base at an arbitrary position in a direction orthogonal to the base moving rail. 6. Extra section grinding device.   The said base movement rail is attached to the said base in parallel with two, The said base is attached ranging over the said two rails for base movement, The Claim 1 to 5 characterized by the above-mentioned. The welding part grinding | polishing part grinding apparatus of any one of these.

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