JP3198755U - Thread groove shaping tool and thread groove shaping machine - Google Patents

Abstract

[PROBLEMS] To efficiently form a screw groove portion such as a bolt in which plating enters a screw groove, a screw groove is deformed by a dent, or a burr is generated by additional screw portion processing without manual work. A thread groove shaping tool and a thread groove shaping machine are provided. A thread groove shaping tool 1 has a cylindrical hole 7 having an opening 12 at one end provided therein and a screw hole in a cylindrical hole 7 of a main body 2 having the other end as a connecting portion 9 to a rotation drive unit. The thread groove shaping part 3 provided with the hole is provided. The thread groove shaping machine includes a thread groove shaping tool 1. [Selection] Figure 2

Description

  The present invention relates to a thread groove shaping tool such as a bolt and a thread groove shaping machine.

  For example, when a plating process is performed on the surface of a bolt for rust prevention, the plating material may enter a screw groove and the bolt may be screwed in smoothly. Therefore, bolts that have been plated are often manually threaded. In addition, when the thread groove is deformed due to the dent, or when burrs are generated due to the additional machining of the thread portion, the thread groove needs to be shaped. Conventionally, the shaping of the thread groove is performed manually, so that the work efficiency is poor, and it takes a lot of time to form the thread grooves of a large number of bolts.

  This invention has been made in view of the above circumstances, so that the thread groove can be efficiently formed without manual operation.

  According to the first aspect of the present invention, there is provided a thread groove shaping portion in which a cylindrical hole that is open at one end portion is provided inside, and a screw hole is provided in the cylindrical hole of the main body portion having the other end portion as a connecting portion to the rotation driving portion. A thread groove shaping tool is provided. The invention of claim 2 is composed of a main body portion having a cylindrical hole opened at one end portion and having the other end portion as a connecting portion to the rotation driving portion, and a thread groove shaping body provided with a screw hole. A thread groove shaping tool is provided, wherein the thread groove shaping body is provided in a non-rotating state with respect to the tube hole in the tube hole of the main body.

  According to each of the above-described devices, when a plated bolt is inserted into the cylindrical hole of the main body and the thread groove shaping tool is rotated, the screw part of the bolt is screwed into the screw hole of the thread groove shaping part. Thus, the plating material adhering to the screw groove is removed, and the screw groove is shaped. 3. The screw groove shaping body according to claim 2, wherein the screw groove shaping body is provided in the cylindrical hole so as to be capable of displacement adjustment in the radial direction and displaceable in the axial direction, so that the bolt to the screw groove shaping body at the start of the operation is provided. Can be easily aligned.

  The invention of claim 5 provides a screw groove forming machine comprising the screw groove shaping tool of each of the above devices and a device main body provided with a rotation driving portion thereof.

  According to the invention of claim 5, when the plated bolt is inserted into the cylindrical hole of the main body portion and the thread groove shaping tool is rotated, the screw portion of the bolt becomes the thread groove shaping portion or the screw groove shaping body. By screwing into the screw hole, the plating material adhering to the screw groove is removed, and the screw groove is shaped.

  According to this device, the thread groove can be efficiently formed without manual operation.

An external perspective view of an embodiment of the thread groove shaping device of the invention of claim 1 and claim 2 Sectional block diagram of embodiment of the thread groove shaping device of the device of Claim 1 and Claim 2 The block diagram of embodiment of the thread groove shaping machine of the device of Claim 5 Explanation of operation of thread groove shaping Explanation of operation of thread groove shaping

Embodiment of invention

  FIG. 1 is a perspective view of a thread groove shaping tool 1 according to the first and second aspects of the present invention, and FIG. 2 is a sectional view thereof. The thread groove shaping tool 1 is entirely made of stainless steel and includes a main body portion 2 and a nut member (screw groove shaping portion, screw groove shaping body) 3 mounted therein. The main body 2 includes a cylindrical body 5, a cap body 6 attached to the front end thereof, and an interlocking shaft (connecting portion) 9 attached to the rear end. Inside the cylindrical body 5, a cylindrical hole 7 having a large diameter and a regular hexagonal cross section is provided on the front end side, and a cylindrical hole 8 having a small diameter and a circular sectional shape is continuously provided on the inner side. . The cap body 6 has an annular shape and is fitted to the front end of the cylinder body 5 and fixed by screws 10. The cap body 6 has a circular hole 12 on the front surface, and the diameter of the circular hole 12 is smaller than the diameter of the cylindrical hole 7 of the cylindrical body 5, so that the peripheral portion 14 of the circular hole 12 is a little cylindrical hole than the peripheral edge of the cylindrical hole 7. 7 projecting to the center side. The interlocking shaft 9 is in the form of a prism and is fitted and fixed to the rear end of the cylinder 5.

  The nut member 3 has a regular hexagonal shape and is fitted and mounted in the cylindrical hole 7 of the cylindrical body 5, thereby being provided in a non-rotating state with respect to the cylindrical hole 7, that is, the nut member 3 is integrated with the cylindrical body 5. Rotate to. Further, since the outer diameter of the nut member 3 is slightly smaller than the diameter of the cylindrical hole 7, a clearance 15 is maintained between the peripheral surface of the nut member 3 and the inner surface of the cylindrical hole 7. Are provided so as to be capable of position adjustment displacement in the radial direction and to be movable in the axial direction. Further, the outer diameter of the nut member 3 is slightly larger than the diameter of the circular hole 12 of the cap body 6, whereby the cap body 6 is disengaged forward from the inside of the cylindrical hole 7 by being engaged with the peripheral edge portion 14 of the circular hole 12. There is nothing.

  FIG. 3 shows the configuration of a thread groove shaping machine according to claim 4 in which the thread groove shaping tool 1 is mounted and used. The thread groove shaping machine 20 includes a drive motor 22 and a working shaft 24 rotated by the drive motor 22 in a casing 21, and an interlocking shaft 15 of the thread groove shaping tool 1 at an end of the working shaft 24 protruding from the surface of the casing 21. Is configured to be fitted, connected and fixed. The drive motor 22 includes a circular rotary drive roller 28 on an upper portion of a drive shaft 26 protruding upward. A pair of disk-shaped rotating plates 30a and 30b are mounted on the operating shaft 24, and the rotational driving roller 28 is positioned horizontally at the lower part between the rotating plates 30a and 30b. The operating shaft 24 is provided with a spring body 32 at the base thereof, and in a state where no force is exerted on the spring body 32, the rotation driving roller 28 is positioned between the rotation plates 30a and 30b, and the rotation driving roller 28 and the rotation plate 30a, 30b does not contact each other. When the operating shaft 24 is displaced in the axial direction, the edge of the rotation driving roller 28 comes into contact with the peripheral surface of one of the rotation plates 30a, 30b. In this state, the rotation driving roller 28 rotates to rotate the rotation plate 30a, Any one of 30b rotates and the operating shaft 24 rotates.

  The operation of shaping the screw groove of the bolt by the screw groove shaping machine 20 will be described. FIG. 4 shows a state where the head portion 32 of the bolt 30 is held and the tip of the screw portion 33 is aligned with the screw hole of the nut member 3 positioned inside the circular hole 12 of the thread groove shaping tool 1. In this state, the rotation drive roller 28 and the rotation plates 30a and 30b are in the state shown in FIG. Further, the drive motor 22 is actuated and the rotary drive roller 28 is in a rotating state in advance. Next, by inserting the bolt 30 into the thread groove shaping tool 1 from the state shown in FIG. 4, the nut member 3 is pushed to the back of the tube hole 7 by being pushed by the tip of the bolt 30 and locked at the back. Then stop. In this state, further force is applied to push the bolt 30 against the spring force of the spring body 32, so that the nut member 3 is pushed by the tip of the bolt 30 and the thread groove shaping tool 1 moves backward and is connected to the interlocking shaft 9. The actuating shaft 24 is also retracted. As a result, the front rotating plate 30a comes into contact with the rotation driving roller 28, the operating shaft 24 rotates, and the thread groove shaping tool 1 rotates. As a result, when the internal nut member 3 rotates, the screw portion 33 of the bolt 30 is screwed into the screw hole of the nut member 3, the plating material adhering to the screw groove 31 is removed, and the screw groove 31 is shaped. .

  FIG. 5 shows a state in which the screw portion 33 of the bolt 30 is screwed into the screw hole of the nut member 3 to the full. When the pushing of the bolt 30 is stopped in this state, the operating shaft 24 moves forward by the spring force of the spring body 32, and accordingly, the rotating plate 30 a is detached from the rotation driving roller 28. Next, when the bolt 30 is pulled to the near side, the bolt 30 moves forward together with the screwed nut member 3, and the nut member 3 is locked inside the peripheral edge portion 14 of the circular hole 12 of the cap body 6.

  Further, when the bolt 30 is pulled to the near side against the spring force of the spring body 32, the thread groove shaping tool 1 moves forward together with the nut member 3, and the operating shaft 24 also advances accordingly. As a result, the rear rotating plate 30b comes into contact with the rotation driving roller 28, the operating shaft 24 rotates, and the thread groove shaping tool 1 rotates. As a result, the internal nut member 3 rotates to remove the screw portion 33 of the bolt 30 from the screw hole of the nut member 3, and the bolt 30 is taken out from the thread groove shaping tool 1. When the nut member 3 is detached from the bolt 30, the thread groove shaping tool 1 is moved rearward by the spring force of the spring body 32, and accordingly, the rotating plate 30 b is detached from the rotation driving roller 28. The nut member 3 remains inside the circular hole 12 of the thread groove shaping tool 1.

  In the above description, the rotation direction of the drive motor 22 is the same when the bolt 30 is inserted and withdrawn. However, when the rotation drive roller 28 rotates in contact with different surfaces of the rotation drive rollers 30a and 30b, the operating shaft 24 is When the bolt 30 is inserted and withdrawn, it rotates in the opposite direction, and the thread groove shaping tool 1 also rotates in the opposite direction.

  As described above, the screw groove 31 of the bolt 30 can be easily shaped by inserting the bolt 30 into the screw groove shaping tool 1 and pulling it out. In particular, the positioning of the bolt 30 with respect to the nut member 3 at the start of work is such that the nut member 3 is provided in the cylindrical hole 7 so as to be capable of displacement adjustment in the radial direction, and can be moved and displaced in the axial direction. This is easily done. That is, the bolt 30 is inserted into the thread groove shaping tool 1 with the tip of the screw portion 33 of the bolt 30 substantially aligned with the screw hole of the nut member 3 located inside the circular hole 12 of the thread groove shaping tool 1. When the nut member 3 moves rearward, the nut 15 is inclined and displaced in the radial direction due to the clearance 15 in the cylindrical hole 7, whereby the end of the bolt 30 is guided to the screw hole of the nut member 3. The alignment is made. Thereby, if the bolt 30 is inserted in the center of the circular hole 12 of the thread groove shaping tool 1, the alignment of the bolt 30 with the nut member 3 is performed, and the operation is facilitated.

DESCRIPTION OF SYMBOLS 1 Thread groove shaping tool 2 Main-body part 3 Nut member (Thread groove shaping part, screw groove shaping body)
7 Tube hole 9 Interlocking shaft (connecting part)
12 Circular opening (opening)
20 Thread groove shaping machine

Claims (5)

  A cylindrical groove opening at one end is provided inside, and a thread groove shaping part provided with a screw hole is provided in the cylindrical hole of the main body part having the other end as a connecting part to the rotation drive part. Thread groove shaping tool. A main body having a cylindrical hole opened inside at one end and the other end connected to the rotation drive unit,
It consists of a thread groove shaping body with screw holes,
The thread groove shaping tool, wherein the thread groove shaping body is provided in the cylinder hole of the main body portion in a non-rotating state with respect to the cylinder hole.   The thread groove shaping tool according to claim 2, wherein the thread groove shaping body is provided in the cylindrical hole so as to be capable of displacement adjustment in a radial direction.   The thread groove shaping tool according to claim 2, wherein the thread groove shaping body is provided in the cylinder hole so as to be displaceable in the axial direction.   A thread groove forming machine comprising: the thread groove shaping tool according to claim 1, 2, 3 or 4; and an apparatus main body including the rotation driving unit.

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