JP2018094667A - Screw deburring tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove deposits in an inner surface of a screw hole by manual work without using a large-scale device, at a low cost, and while avoiding formation of a double-threaded screw.SOLUTION: A screw deburring tool 1 includes; a removal member 10 having a screwing part 11 for removing deposits by screwing with a screw hole 100 of a work-piece W; and a guide part 20 for guiding a removal member 10 in contact with an inner surface of a hole part 200 of the work-piece W.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a screw staking tool for removing foreign matter adhering to the inner surface of a screw hole, for example, and particularly belongs to the technical field of a structure used when an operator performs screw shave manually.

  For example, if plating or painting is applied to various parts in which screw holes are formed, plating or painting may adhere to the inner surface of the screw holes, that is, screw grooves or threads, etc. When a cylindrical member in which a screw hole is formed is welded to a steel plate or the like, spatter generated during welding may similarly adhere to the inner surface of the screw hole. If the male screw is screwed into the screw hole in a state where the deposit is attached, the male screw may not be smoothly screwed or may be difficult to screw.

  For example, as disclosed in Japanese Patent Application Laid-Open No. 2004-86400, a device that removes the adhered matter by removing the adhered matter by screwing a tap into a threaded hole formed in the workpiece as an apparatus for removing the adhered matter attached to the inner surface of the screw hole. The device is known. The screw shave processing device includes a tap rotation mechanism that rotationally drives the tap and a work holding unit that holds the workpiece. The screw rotation processing device advances the inside of the screw hole while rotating the tap by the tap rotation mechanism. Deposits are removed.

  In general, when a screw hole is formed in a workpiece, a tap having a cutting edge is used (for example, see Patent Documents 2 and 3).

JP 2009-90385 A JP 2001-353623 A JP-A-2005-22066

  By the way, there are many sites where there are many types of parts that require screw scouring. Assuming the case of using a screw-scraping processing device as in Patent Document 1 at such a work site, in Patent Document 1, since the tap is rotated by the tap rotating mechanism, control for controlling the tap rotating mechanism is performed. It is necessary to create and input an operation program for each part in the apparatus, and it is necessary to prepare and prepare a jig for each part, resulting in an increase in manufacturing cost.

  In order to avoid this, when performing screw cleaning at a site where there are many types of parts, the worker may perform screw cleaning by manually tapping and rotating it. However, in manual work, it is difficult to arrange the screw hole and the tap on the same axis, and it is conceivable that the operator forcibly rotates the tap without the coaxiality between the screw hole and the tap. If the tap is rotated without the coaxiality between the screw hole and the tap, the tap blade does not screw into the thread groove, so the force required to rotate the tap increases, but the operator notices that. As a result, the tap may be rotated, and as a result, a groove different from the original screw groove is formed on the inner surface of the screw hole, so that a so-called double screw is formed and a defective product may be generated.

  The present invention has been made in view of such a point, and the object of the present invention is to form a double screw at a low cost without using a large-scale device for deposits on the inner surface of the screw hole. It is to be able to remove manually without having to.

  In order to achieve the above object, according to the present invention, a removal member that is screwed into a thread groove to remove an adhering substance can be guided by a workpiece.

  According to a first aspect of the present invention, there is provided a screw hole on an inner surface of the screw hole of the workpiece formed in communication with the screw hole and coaxially with the screw hole and having a hole having a larger diameter than the screw hole. In the screw staking tool for removing the attached deposit, the removal member having a screwing portion for removing the deposit by screwing into a screw groove formed on the inner surface of the screw hole and slidingly contacting the inner surface, and And a guide portion that contacts the inner surface of the hole portion of the workpiece and guides the removal member so that the screwing portion of the removal member is positioned coaxially with the screw hole.

  According to this configuration, when the guide portion is brought into contact with the inner surface of the hole portion of the workpiece, the screwing portion of the removal member is guided so as to be positioned coaxially with the screw hole of the workpiece. As a result, the screwing portion of the removal member and the screw hole of the workpiece are coaxially arranged, so that when the screwing portion is rotated and screwed into the screw hole of the workpiece, the screwing portion is surely fitted into the screw hole. Threaded onto. Therefore, it is suppressed that a double screw is formed on the workpiece. Then, the screwed portion is slidably contacted with the inner surface of the screw hole, and the adhered matter adhering to the inner surface is removed.

  According to a second invention, in the first invention, the removal member has a shape that is long in the axial direction of the screw hole of the workpiece, the screwing portion is provided on one side in the longitudinal direction of the removal member, The guide portion is provided apart from the screwing portion on the other side in the longitudinal direction of the removal member, and is formed in a cylindrical shape surrounding the other side in the longitudinal direction of the removal member.

  According to this configuration, the other side in the longitudinal direction of the removal member is guided by the guide portion, so that the screwing portion on one side in the longitudinal direction and the screw hole of the workpiece are arranged coaxially. At this time, since the guide portion is cylindrical, the displacement is suppressed in any of the radial directions while being in contact with the inner surface of the hole portion of the workpiece, so that the screw portion and the screw hole of the workpiece are coaxial. It becomes possible to increase the degree.

  According to a third aspect of the present invention, in the second aspect, on the other side in the longitudinal direction of the removal member, an operation portion that protrudes in a direction opposite to the insertion direction from the guide portion to the screw hole is provided. Features.

  According to this configuration, since the operation part protrudes in the direction opposite to the insertion direction from the guide part to the screw hole, the operator can easily hold the operation part, and the screwing part is rotated to rotate the screw hole of the workpiece. The screwing operation can be easily performed.

  According to a fourth invention, in the third invention, the operation portion is formed in a columnar shape, and an outer diameter of the operation portion is set smaller than an outer diameter of the guide portion.

  That is, in the unlikely event that the operating part is operated in the rotational direction with the threaded part incompletely threaded into the thread groove, a larger rotational force is required than when it is completely threaded. It will take. At this time, if the outer diameter of the operation unit is small as in the present invention, a greater rotational force is required when the operator attempts to rotate the operation unit. This makes it easier for the operator to notice that the threaded portion is incompletely threadedly engaged with the thread groove, thereby preventing the formation of a double screw.

  According to a fifth invention, in any one of the second to fourth inventions, the distance between the guide portion and the screwing portion is set so that the screwing portion is in contact with the inner surface of the screw hole of the workpiece. The guide portion is set so as to contact the inner surface of the hole portion.

  According to this configuration, after the guide portion comes into contact with the inner surface of the hole portion of the workpiece and the coaxiality between the screw portion and the screw hole of the workpiece is ensured, the screw portion comes into contact with the inner surface of the screw hole of the workpiece. As a result, the screwing portion can be completely screwed into the screw groove.

  According to a sixth invention, in any one of the second to fifth inventions, the guide portion is provided with a fixing screw for fixing the guide portion to the removal member, and the tip end portion of the fixing screw is provided in the above-described manner. It is characterized by being in pressure contact with the outer surface of the removal member.

  According to this configuration, when the fixing screw is loosened, the leading end of the fixing screw is separated from the outer surface of the removal member, and the guide portion is not fixed to the removal member. The distance between the guide portion and the screwing portion can be set to an arbitrary interval by moving the guide portion. When the fixing screw is tightened, the distal end portion of the fixing screw comes into pressure contact with the outer surface of the removing member, and the guide portion is fixed to the removing member. That is, the interval between the guide portion and the screwing portion can be adjusted to an arbitrary interval.

  According to the first invention, since the removal member can be guided by the hole portion of the workpiece, the operator can coaxially connect the screwing portion of the removal member and the screw hole of the workpiece without using a jig or a device. Can be placed on top. Therefore, deposits on the inner surface of the screw hole can be removed manually at low cost and without forming a double screw.

  According to the second aspect of the invention, since the screwing portion is provided on one side in the longitudinal direction of the removal member, the guide portion is formed in a cylindrical shape and provided on the other side in the longitudinal direction of the removal member, the guide portion is a hole portion of the workpiece. Deviation can be suppressed in any of the radial directions while in contact with the inner surface. Thereby, the coaxiality of a screwing part and the screw hole of a workpiece | work can be raised, and it can prevent beforehand that a double screw is formed.

  According to the third aspect of the invention, since the operation portion protrudes in the direction opposite to the insertion direction into the screw hole, the operator easily performs the operation of rotating the screwing portion and screwing into the screw hole of the workpiece. be able to.

  According to the fourth invention, since the outer diameter of the operation part is made smaller than the outer diameter of the guide part, if the screwing part is incompletely screwed into the screw groove, the state is changed to the operator. Can be easily noticed, and a double screw can be prevented from being formed.

  According to the fifth aspect of the invention, since the guide portion comes into contact with the inner surface of the screw hole before the screwing portion comes into contact with the inner surface of the screw hole of the workpiece, the coaxiality between the screwed portion and the screw hole of the workpiece. After securing the screw, the screwed portion can be screwed into the screw groove. Thereby, it can prevent beforehand that a double screw will be formed.

  According to the sixth aspect of the invention, the distance between the guide portion and the screwing portion can be adjusted to an arbitrary interval, so that it is possible to deal with various workpieces.

It is a side view of the screw cleaver concerning an embodiment. It is a disassembled perspective view of the screw cleaver concerning an embodiment. It is sectional drawing which shows the state which made the guide part of the screw staking tool contact the inner surface of the hole of a workpiece | work. It is sectional drawing which shows the state which screwed the screwing part of the screw staking tool in the screw hole of the workpiece | work.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is a side view of a screw cleaner 1 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the screw cleaner 1 according to an embodiment of the present invention. The screw staking tool 1 performs, for example, a so-called screw scouring operation to remove the deposits attached to the inner surface of the screw hole 100 of the workpiece W (shown in FIGS. 3 and 4), and removes the deposits from the inner surface of the screw hole 100. It is an instrument for removing. The workpiece W is formed with a screw hole 100 and a hole portion 200 communicating with the screw hole 100 and positioned coaxially with the screw hole 100. Although not shown, a bolt, a male screw or the like is screwed into the screw hole 100. On the inner surface of the screw hole 100, a screw groove 100a and a screw thread 100b are formed. The lower end portion of the screw hole 100 opens in a substantially circular shape on the lower end surface of the workpiece W. Moreover, the hole part 200 is made larger diameter than the screw hole 100, and the cross section of the direction orthogonal to the axial direction of this hole part 200 is substantially circular. The screw hole 100 is formed in the lower part of the work W, and the hole 200 is formed in the upper part of the work W.

  The upper end portion of the hole portion 200 is opened in a substantially circular shape on the upper end surface of the workpiece W. The lower end portion of the hole portion 200 is continuous with the upper end portion of the screw hole 100. A lower end surface 200 a extending in a direction orthogonal to the axial direction is formed at the lower end of the hole 200.

  The workpiece W is a member welded to, for example, a steel plate. During welding, spatter or the like may enter the screw hole 100 from the opening on the upper end surface or the lower end surface of the workpiece W and adhere to the inner surface of the screw hole 100. ) Is removed by the screw keeper 1. When the outer surface of the workpiece W is to be painted, the paint may enter the screw hole 100 and adhere to the inner surface of the screw hole 100. The paint (adhered matter) attached to the inner surface of the screw hole 100 is screwed away. Remove with tool 1. In addition, the deposit | attachment removed by the screw squeezer 1 is not restricted to these, The various types of deposits adhering to the inner surface of the screw hole 100 after the screw hole 100 is formed can be removed by the screw shave 1. is there.

  In the description of this embodiment, for convenience of explanation, the upper side of each figure is referred to as “upper” and the lower side of each figure is referred to as “lower”. The direction is not limited to the illustrated direction.

  The screw staking tool 1 includes a removal member 10 and a guide portion 20 formed of a member different from the removal member 10. Both the removing member 10 and the guide portion 20 are made of a metal material. The removal member 10 has a shape that is long in the axial direction of the screw hole 100 of the workpiece W. Threading that removes the adhering material by screwing into a screw groove 100a formed on the inner surface of the screw hole 100 and slidingly contacting the inner surface of the removing member 10 in the longitudinal direction (lower side in each drawing). Part 11 is provided. The screwing part 11 is a part formed by forming a spiral strip on the outer surface of the removing member 10 at a pitch and height that can be screwed into the screw hole 100. The formation range of the screwing part 11 is from the lower part of the removing member 10 to the middle part in the vertical direction of the removing member 10, but is not limited thereto, and may be, for example, only the lower part of the removing member 10, or removed Only the middle part in the vertical direction of the member 10 may be used. Moreover, the spiral strip which comprises the screwing part 11 may be continuing, and may be intermittent. Since the spiral strips constituting the screwing portion 11 are intermittent, various deposits adhered to the inner surface of the screw hole 100 are removed from the inner surface, and then the deposits are accommodated in the interrupted portion of the spiral strip. It becomes possible.

  A sharpened portion 11a having a pointed downward shape is provided at the lower end of the removing member 10. In this embodiment, the sharpened portion 11a is formed in a conical shape protruding downward. However, the shape of the sharpened portion 11a is not limited to a conical shape, and may be a pyramid shape, or simply downward. The cross-sectional area may be smaller as it goes. The sharpened portion 11a can be omitted.

  An upper portion (the other side in the longitudinal direction of the removing member 10) of the removing member 10 from the screwing portion 11 is a cylindrical portion 12. The outer surface of the cylindrical portion 12 is a smooth surface. The outer diameter of the cylindrical portion 12 is set smaller than the maximum outer diameter of the screwing portion 11.

  In the upper part of the cylindrical part 12, an operating part 12a is provided for the operator to hold and operate when operating the screw staking tool 1. The operation portion 12 a has a column shape that protrudes upward from the upper end surface of the guide portion 20, that is, in a direction opposite to the insertion direction into the screw hole 100. The outer diameter of the operation unit 12 a is set smaller than the outer diameter of the guide unit 20.

  A prism portion 12b is formed in an upper portion of the cylindrical portion 12 with respect to the operation portion 12a. A tool (not shown) can be engaged with the prism portion 12b. Moreover, the flat surface 12c extended in the direction orthogonal to an axial direction is formed in the lower end part of the prismatic part 12b.

  The guide portion 20 is configured by a member for guiding the removal member 10 so as to contact the inner surface of the hole portion 200 of the workpiece W and the screwing portion 11 of the removal member 10 is positioned coaxially with the screw hole 100. ing. The guide part 20 is provided apart from the screwing part 11 on the upper side (the other side in the longitudinal direction) of the removal member 10 and is formed in a cylindrical shape surrounding a predetermined range on the upper side of the removal member 10.

  The guide part 20 has substantially the same outer diameter and inner diameter from the upper end part to the lower end part. The outer diameter of the guide portion 20 is set to be slightly smaller than the inner diameter of the hole portion 200 so that the outer diameter of the guide portion 20 can be inserted into the hole portion 200 of the workpiece 100. Almost no gap is formed between the inner surface of the portion 200. That is, the outer surface 20a of the guide part 20 and the hole of the work 100 are arranged so that the screwing part 11 of the removal member 10 can be arranged coaxially with the screw hole 100 in a state where the guide part 20 is inserted into the hole part 200 of the work 100. The gap between the inner surface of the portion 200 is minimized. The clearance between the outer surface 20a of the guide portion 20 and the inner surface of the hole portion 200 of the workpiece 100 can be increased as long as the screwing portion 11 of the removing member 10 can be disposed coaxially with the screw hole 100. .

  The inner diameter of the guide portion 20 is set slightly larger than the outer diameter of the cylindrical portion 12 so that the cylindrical portion 12 of the removing member 10 can be inserted. Almost no gap is formed between the outer surface of each of them. That is, with the cylindrical portion 12 of the removal member 10 inserted into the guide portion 20, the inner surface 20 b of the guide portion 20 and the outer surface of the cylindrical portion 12 are arranged so that the guide portion 20 and the removal member 10 can be arranged coaxially. The gap between them is minimized. The clearance between the inner surface 20b of the guide portion 20 and the outer surface of the cylindrical portion 12 can be increased as long as the guide portion 20 and the removing member 10 can be disposed coaxially.

  The guide portion 20 is provided with a fixing screw 21 for fixing the guide portion 20 to the removal member 10. The fixing screw 21 is screwed into a screwing hole 20 c formed in the guide portion 20. The screw hole 20c is formed so as to pass through the guide portion 20 in the thickness direction (a direction orthogonal to the axial direction), and a fixing screw is formed from a portion of the screw hole 20c that opens to the outer surface 20a of the guide portion 20. 21 is inserted and screwed together. By screwing the fixing screw 21, the distal end portion of the fixing screw 21 comes into pressure contact with the outer surface of the removing member 10. The guide portion 20 can be fixed to the removal member 10 by the distal end portion of the fixing screw 21 being in pressure contact with the outer surface of the removal member 10.

  In this embodiment, since the removal member 10 and the guide part 20 can be separated, for example, when the inner diameter of the hole 200 of the workpiece W is changed, only the guide part 20 is changed to a different shape. The removal member 10 can be made common. On the other hand, when the inner diameter or the like of the screw hole 100 of the workpiece W is changed, only the removal member 10 can be changed to another shape and the guide portion 20 can be made common. In addition, the removal member 10 and the guide part 20 may be integrated so that it cannot be detached.

  By moving the guide part 20 in the axial direction of the removal member 10, it is possible to adjust the interval between the guide part 20 and the screwing part 11 steplessly. In this embodiment, the distance between the guide portion 20 and the screwing portion 11 is such that the lower end portion of the guide portion 20 is not in contact with the upper end portion of the inner surface of the screw hole 100 of the work W. It is set so as to contact the upper end of the inner surface of the hole 200.

  Next, a method of using the screw staking tool 1 configured as described above will be described. First, the interval between the guide part 20 and the screwing part 11 is adjusted. As described above, the gap between the guide portion 20 and the screwing portion 11 is such that the lower end portion of the guide portion 20 is not in contact with the upper end portion of the inner surface of the screw hole 100 of the workpiece W as described above. It is made to contact the upper end part of the inner surface of the hole part 200.

  Thereafter, as indicated by an arrow A in FIG. 3, the operator manually inserts the screwing portion 11 on the distal end side in the insertion direction of the removing member 10 into the hole portion 200 of the workpiece W. Then, since the space | interval of the guide part 20 and the screwing part 11 is set as mentioned above, the guide part 20 contacts the inner surface of the hole part 200 of the workpiece | work W, and the screw hole of the screwing part 11 and the workpiece | work W is set. After the coaxiality with 100 is ensured, the screwing portion 11 comes into contact with the inner surface of the screw hole 100 of the workpiece W. Since the guide portion 20 is cylindrical, the displacement is suppressed in any of the radial directions while being in contact with the inner surface of the hole portion 200 of the workpiece W. Therefore, the screwing portion 11 and the screw hole 100 of the workpiece W are suppressed. It becomes possible to increase the coaxiality with.

  Then, as indicated by an arrow B in FIG. 4, the operator holds the operation portion 12 a and rotates the screwing portion 11 in a direction in which the screwing portion 11 is screwed into the screw hole 100 of the workpiece W. At this time, since the operation part 12a protrudes in the direction (upward) opposite to the insertion direction from the guide part 20 to the screw hole 100, the operator can easily hold the operation part 12a and rotate the screwing part 11. Thus, the operation of screwing into the screw hole 100 of the workpiece W can be easily performed.

  When the screwing portion 11 is rotated, the coaxiality between the screwing portion 11 and the screw hole 100 of the workpiece W is secured in advance, so that the screwing portion 11 is completely screwed into the screw hole 100 of the workpiece W. Can do. When the operation portion 12a is further rotated, the screwing portion 11 is deeply screwed into the screw hole 100 of the workpiece W. At this time, the screwing portion 11 is slidably contacted with the inner surface of the screw hole 100 and attached to the inner surface. The attached deposits are removed.

  If the operator tries to operate the operating portion 12a in the rotational direction with the screwing portion 11 of the removing member 10 being incompletely screwed into the screw hole 100 of the workpiece W, the A large rotational force is required as compared with the case of screwing. At this time, if the outer diameter of the operation portion 12a is smaller than the outer diameter of the guide portion 20 as in the present embodiment, a greater rotational force is required when the operator tries to rotate the operation portion 12a. . This makes it easier for the operator to notice that the screwing portion 11 is incompletely screwed into the screw hole 100, thereby preventing the formation of a double screw.

  As described above, according to the screw staking tool 1 according to this embodiment, the removal member 10 can be guided by the hole 200 of the workpiece W, so that an operator can use the jig without using a jig or a device. The screwing portion 11 of the removing member 20 and the screw hole 100 of the workpiece W can be arranged coaxially. Therefore, deposits on the inner surface of the screw hole 100 can be removed manually at low cost and without forming a double screw.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the screw staking tool according to the present invention can be used, for example, when removing spatter and the like adhering to the inner surface of the screw hole.

DESCRIPTION OF SYMBOLS 1 Screw cleaver 10 Removal member 11 Screwing part 12a Operation part 20 Guide part 21 Fixing screw W Workpiece 100 Screw hole 200 Hole part

Claims (6)

Removes adhering material adhering to the inner surface of the screw hole of the work formed with a screw hole and a hole that communicates with the screw hole and is coaxial with the screw hole and has a larger diameter than the screw hole. In the screw remover that
A removal member having a threaded portion that removes deposits by screwing into a screw groove formed on the inner surface of the screw hole and slidingly contacting the inner surface;
And a guide portion that contacts the inner surface of the hole portion of the workpiece and guides the removal member so that the screwing portion of the removal member is positioned coaxially with the screw hole. Screw wiping tool. The screw cleaver according to claim 1,
The removal member has a shape that is long in the axial direction of the screw hole of the workpiece, and the screwing portion is provided on one side in the longitudinal direction of the removal member.
The screw squeezer is characterized in that the guide portion is provided apart from the screwing portion on the other side in the longitudinal direction of the removal member and is formed in a cylindrical shape surrounding the other side in the longitudinal direction of the removal member. The screw cleaver according to claim 2,
The screw cleaver characterized in that an operation portion that protrudes in a direction opposite to the insertion direction from the guide portion to the screw hole is provided on the other side in the longitudinal direction of the removal member. The screw cleaver according to claim 3,
The screw operating device is characterized in that the operation portion is formed in a columnar shape, and an outer diameter of the operation portion is set smaller than an outer diameter of the guide portion. The screw cleaver according to any one of claims 2 to 4,
The distance between the guide portion and the screwing portion is set so that the guide portion contacts the inner surface of the hole before the screwing portion contacts the inner surface of the screw hole of the workpiece. A screw cleaner characterized by The screw staking tool according to any one of claims 2 to 5,
A screw squeezer, wherein the guide portion is provided with a fixing screw for fixing the guide portion to the removal member, and a tip end portion of the fixing screw is in pressure contact with an outer surface of the removal member.

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