JP2005297088A - Method and apparatus for marking in knurl pattern area - Google Patents

Abstract

An object of the present invention is to form a knurled pattern on the outer peripheral surface of a cylindrical workpiece, and at the same time to provide a non-patterned part without this pattern in the knurled pattern area, and to display a trademark, a product number, a design, etc. on the non-patterned part And a method thereof.
A knurling apparatus for forming a knurled pattern such as a mesh or a flat pattern on an outer peripheral surface 1a of the workpiece 1 by rotating the round die in the direction of the workpiece while rotating. In addition, on the outer peripheral surface of each of the round dies, there is provided an omission portion of the knurled eye that makes the predetermined portion on the outer peripheral surface of the workpiece a non-patterned portion 1b without the knurled pattern, The knurled pattern is formed on the outer peripheral surface of the workpiece by the engraving plate disposed in the non-patterned portion of the round die, and the trademark, product number, design, etc. C are placed in the knurled pattern area. Engrave.
[Selection] Figure 5

Description

    The present invention performs knurling on the outer peripheral surface of a cylindrical workpiece such as a knurled pattern formed as a non-slip on the peripheral surface of the cylindrical gripping portion of the tightening tool, and more specifically, on the outer peripheral surface of the workpiece. The present invention relates to a method and an apparatus for performing knurling, providing a portion having no knurled pattern in the knurled pattern area, and displaying a mark, a product number, a pattern, and the like on the non-patterned portion.

  There are many means for processing a knurled pattern on the outer peripheral surface of a cylindrical workpiece, such as a mesh-like or flat knurled pattern formed as a non-slip on the peripheral surface of the cylindrical gripping tool. A pair of round dies with groove-shaped knurls are arranged with the rotation axis in parallel, and the work piece is placed between the round dies to rotate the round dies. In addition to a known roll-forming means for forming a knurled pattern on the outer peripheral surface of the workpiece by moving in the direction of the workpiece while moving, there is a cutting-type means (for example, Patent Document 1, Patent Document 2, Non-Patent Document 3).

JP 2002-144156 A

JP 2002-307250 A Shuichi Okano et al. "Illustrated machine terminology supplement edition", Jikkyo Publishing Co., Ltd., December 20, 2001, p281, p473

  The knurled pattern formed on the cylindrical gripping part of the tightening tool has different types depending on the type of eyes such as meshes (also referred to as aya) or flat eyes, and the density of the eyes such as coarse, medium, and fine. Is applied over the entire surface of the predetermined processing area.

  In the present invention, a knurled pattern is formed on the outer peripheral surface of a cylindrical workpiece, and at the same time, a non-patterned portion without the pattern is provided in the knurled pattern region, and a trademark, a product number, a design, etc. are imprinted on the non-patterned portion. A display method and an apparatus thereof are provided.

  In the method of marking and displaying in the knurled pattern area, a pair of round dies each having a multi-groove knurl around the outer peripheral surface are arranged in parallel with the rotation axis. By placing a cylindrical work piece between them and rotating the circular die while pressing it in the direction of the work piece, a knurled pattern such as a mesh or a flat pattern is formed on the outer peripheral surface of the work piece. In the knurling device to be formed, and on the outer peripheral surface of each of the round dies, a predetermined portion on the outer peripheral surface of the workpiece is formed as a non-patterned portion without the knurled pattern. An omission part is provided, and the omission part is provided with means for disposing a removable engraving plate on the non-patterned part to display a mark, a product number, a design, etc. And contact surface of workpiece A synchronous rotation control means for the two round dies that matches a predetermined portion of the workpiece and the non-patterned portion of each of the circular dies, and the non-patterned portion of one of the round dies. The knurling plate forms the knurled pattern on the outer peripheral surface of the workpiece, and the trademark, the product number, the design, etc. are imprinted in the knurled pattern area. In the knurl processing device, the knurl-shaped omission portion that makes a predetermined portion on the outer peripheral surface of the workpiece a non-patterned portion without the knurled pattern on the outer peripheral surface of each round die. The omission part is provided with means for disposing a removable engraving plate that displays a mark, a product number, a design, etc. on the non-patterned part, and both the knurling process A rotating control means for synchronous rotation of the round dies, which is in contact with the peripheral surface of the die and the workpiece, and matches a predetermined portion of the workpiece with a non-patterned portion of each of the round dies. Further, the knurled omission part of the apparatus is characterized in that a hole is provided in the outer peripheral surface of each round die, and the hole is provided with a fitting / detaching fixing means for the stamped plate. To do.

  According to the apparatus of the present invention, both circular dies and the peripheral surface contact rotational movement of the workpiece surface during knurling, and the predetermined rotation on the outer peripheral surface of the workpiece is accompanied by the synchronous rotation of the double circular dies. A portion on the outer peripheral surface of each round die that matches the portion is provided with a knurled omission portion that makes the predetermined portion a non-patterned portion having no knurled pattern, and this omission portion is a trademark. , The product can be provided with a stamp such as a product number or design, and when the workpiece is processed with the stamp plate placed and fixed on one round die, a knurled pattern is formed on the outer peripheral surface of the workpiece. At the same time, it is only possible to display a trademark or the like in the knurled pattern area, or it is also possible to display a pattern. Further, by processing with the stamped plate removed, a blank area is displayed in the knurled pattern area. This is the pattern Are those also, moreover desired shape, size, but also enables formation of marking the display and no pattern of arrangement.

  FIG. 1 shows an embodiment of a method and apparatus for marking and displaying in a knurled pattern area according to the present invention, and will be described below with reference to the drawings.

  The knurl processing apparatus in this embodiment forms a knurl pattern on the outer peripheral surface of a cylindrical workpiece 1 such as a gripping part of a tightening tool, and multi-groove knurls A are provided around the outer peripheral surface. The pair of round dies 2 and 3 and a support base 4 of the workpiece 1 disposed between the round dies 2 and 3 are schematically configured. The rotational axes 2a and 3a are arranged in parallel in a manner in which the rotational axes 2a and 3a are arranged on the same line, and the center of the workpiece 1 placed on the support 4 is centered on the axes 2a of the double dies 2 and 3 , 3a in a state where they are arranged on the same line as the circular dies 2, 3 while rotating and pressing in the direction of the workpiece 1, the peripheral surfaces of the circular dies rotate in contact with each other. The outer peripheral surface of the workpiece 1 is knurled. Here, each round die 2 A knurl A having a large number of oblique grooves is provided around the outer peripheral surface of the work piece 3. As a result, a mesh (also referred to as a “ya”) knurled pattern B is formed on the outer peripheral surface 1a of the workpiece 1. (FIGS. 1 and 2).

  In the knurling apparatus, the knurled pattern B is formed on the outer peripheral surface 1a of the workpiece 1 as described above, and at the same time, the non-patterned portion having no knurled pattern B at a predetermined portion in the knurled pattern B area. 1b is provided, and the non-patterned portion 1b is engraved with a trademark, a product number, a pattern, and the like C. In this embodiment, the above-described two positions on the circumference of the outer peripheral surface 1a of the workpiece 1 are equal to each other. Engraving is performed.

  Thus, each of the round dies 2 and 3 has each part on the outer peripheral surface obtained by equally dividing the circumference of each of the round dies 2 and 3 with a dimension D that is a half of the circumference of the workpiece 1. In other words, a square hole 5 is recessed in each part on the outer peripheral surface having an equal arc angle around the rotation axes 2a, 3a of the round dies 2, 3 so that each round In the dies 2 and 3, omitted portions 2 b and 3 b in which the knurled eye A is omitted are formed in the peripheral area of the knurled eye A.

  Further, one end face of each of the round dies 2 and 3 is provided with bottomed insertion holes 2c and 3c in the direction of each hole 5, and screw holes 2d and 3d between the insertion holes 2c and 3c and each hole 5. A marking plate 6 such as a trademark, product number, or design is fitted in each hole 5 of one of the round dies 2 in a state where the marking surface is the same surface as the knurled eye A surface, and the insertion hole 2c , 3c are fixed through screw holes 2d, 3d by set screws 7 (FIGS. 3 and 4). These round dies 2 and 3 are formed at the time of processing. Synchronous rotation control is performed such that the holes 5 recessed in 3 rotate while maintaining the same rotation angle.

  Then, the work piece 1 is placed on the support base 4 and both the round dies 2 and 3 are synchronously rotated and pressed in the direction of the work piece 1 so that the round dies 2 and 3 are moved around. A knurled pattern B (mesh in this example) is formed on the outer peripheral surface 1a of the workpiece 1 by the knurled stitch A provided, and the stamped plate 6 is fitted and fixed in the hole 5 of one round die 2. The trademark, product number, and design are engraved at two locations on the circumference of the knurled pattern B area (Fig. 5). At this time, since the double round dies 2 and 3 are rotated synchronously, the engraving location is The other round die 3 is engraved without being crushed to match the hole 5.

  That is, in an example in which two round dies 2 and 3 having a diameter of 120 mm are engraved at two positions on the outer circumferential surface 1a of the workpiece 1 having a diameter of 30 mm, the circular dies 2 , 3 square shafts 5 are provided at eight positions (circular dimensions 47.1 mm) on the outer peripheral surface having an equal arc angle of 45 ° with the rotation axis 2a, 3a as the center (FIGS. 1 and 2). .

  Of course, the number and position of the stamped parts and the stamped shape, that is, the number, position and shape of the holes 5 recessed in the round dies 2 and 3 are arbitrary, and when not stamped, they are fitted and fixed in the holes 5. By removing the engraving plate 6, the hole 5 portion (omitted portions 2b, 3b) from which the knurled eye A is omitted is exposed as the non-patterned portion 1b in the knurled pattern B area, and the holes 5 (omitted portions 2b, 3b) are exposed. ) In consideration of the shape, size, and arrangement of (), this also becomes a pattern in the knurled pattern B area (FIG. 7), which is provided around the circular dies 2 and 3 without the hole 5 being recessed. It is also possible to omit (delete) a desired portion of the knurled eye A in a desired shape.

  As described above, according to the knurl processing apparatus of this embodiment, both the round dies 2 and 3 and the work surface 1 are in contact with each other at the time of knurl processing. Accordingly, a predetermined portion on the outer peripheral surface of each of the round dies 2 and 3 that coincides with a predetermined portion on the outer peripheral surface 1a of the workpiece 1 is formed as a non-patterned portion 1b having no knurled pattern. In addition, holes 5 to be omitted portions 2a and 3a in which knurled eyes are omitted (deleted) are recessed, and the holes 5 which are the omitted portions 2a and 3a are engraved plates such as trademarks, product numbers, designs, etc. 6 is configured to be disposed, and the workpiece 1 is processed by disposing and fixing the stamped plate 6 in the hole 5 of one of the round dies 2, so that a knurled pattern is formed on the outer peripheral surface of the workpiece. At the same time as forming the mark in the knurled pattern area It can only be displayed, or it can be displayed, and by processing with the engraved plate removed, a blank area is exposed in the knurled pattern area, which is also a pattern, and the desired pattern Indicating the shape, size, and arrangement, and forming a pattern are also possible.

The front view of a knurl processing apparatus. The top view of a knurling apparatus. Front sectional drawing of a hole site | part. FIG. 4 is a side sectional view of FIG. 3. The front view of the to-be-processed state of the state stamped in the knurled pattern area. The side view of FIG. The front view of the to-be-processed state of the state which formed the non-pattern pattern in the knurled pattern area.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Workpiece 1a Outer peripheral surface 1b Unpatterned part 2, 3 Round die 2a, 3a Rotating shaft center 2b, 3b Omitted part 2c, 3c Insertion hole 2d, 3d Screw hole 4 Support base 5 Hole 6 Stamping plate 7 Set screw A Knurled eye B Knurled pattern C Trademark, product number, design, etc.

Claims (4)

  A pair of round dies with multi-grooved knurls on the outer peripheral surface are arranged in parallel with the rotation axis, and a cylindrical workpiece is placed between the round dies. And a knurling device for forming a knurled pattern such as a mesh or a flat on the outer peripheral surface of the workpiece by rotating the circular die in the direction of the workpiece while rotating. On the outer peripheral surface of each round die, there is provided an omission portion of the knurled eye, which will be a non-patterned portion without the knurled pattern at a predetermined location on the outer peripheral surface of the workpiece. The non-patterned portion is provided with a removable engraving plate arrangement means for displaying a mark, a product number, a design, etc. on the non-patterned portion. A predetermined portion of the workpiece and each of the workpieces By means of the synchronous rotation control means of the two round dies for matching the non-patterned portion of the die, and the engraving plate disposed in the non-patterned portion of one of the circular dies, the outer peripheral surface of the workpiece is A method of marking and displaying in a knurled pattern area, wherein a knurled pattern is formed and the trademark, product number, pattern, etc. are stamped in the knurled pattern area. A pair of round dies with multi-grooved knurls on the outer peripheral surface are arranged in parallel with the rotation axis, and a cylindrical workpiece is placed between the round dies. In the knurling apparatus for forming a knurled pattern such as a mesh or a flat pattern on the outer peripheral surface of the workpiece by rotating and pressing the round die in the direction of the workpiece,
On the outer peripheral surface of each of the round dies, there is provided an omission portion of the knurled eye that makes a predetermined portion on the outer peripheral surface of the workpiece a non-patterned portion without the knurled pattern. The abbreviated portion is provided with means for disposing a removable engraving plate on the non-patterned portion, such as a trademark, a product number, and a design, and the round dies and the work piece around the knurl are processed. A knurled pattern comprising a rotary rotation control means for both circular dies, which is in surface contact rotational movement and matches a predetermined portion of the workpiece with a non-patterned portion of each of the circular dies. A device that stamps in the area.   3. The apparatus for marking in the knurled pattern area according to claim 2, wherein the knurled portion is omitted by forming a hole in the outer peripheral surface of each round die. The apparatus for marking in a knurled pattern according to claim 2 or 3, wherein the hole is provided with a fitting / removing fixing means for the stamped plate.

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