JPS62151041U

JPS62151041U -

Info

Publication number: JPS62151041U
Application number: JP3815186U
Authority: JP
Priority date: 1986-03-14
Filing date: 1986-03-14
Publication date: 1987-09-25

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例を示す平面図、第２
図及び第３図は同上の側面図、第４図は同上の要
部を示す図、第５図及び第６図はねじ転造装置を
示す図、第７図は従来の転造ダイスを示す平面図
、第８図は従来のタツピングねじを示す正面図、
第９図は改良されたタツピングねじを示す正面図
である。１……転造ダイス、２……転造溝、５……転造
面、７……傾斜面、８……ねじ素材、９……転造
溝。 Figure 1 is a plan view showing an embodiment of this invention, Figure 2 is a plan view showing an embodiment of this invention.
Figures 3 and 3 are side views of the same as above, Figure 4 is a diagram showing the main parts of the same as above, Figures 5 and 6 are diagrams showing a thread rolling device, and Figure 7 is a diagram showing a conventional rolling die. A plan view, FIG. 8 is a front view showing a conventional tapping screw,
FIG. 9 is a front view of the improved tapping screw. 1... Rolling die, 2... Rolling groove, 5... Rolling surface, 7... Inclined surface, 8... Thread material, 9... Rolling groove.

補正昭６２．３．２５図面の簡単な説明を次のように補正する。明細書第８頁１行目の「平面図」を「正面図」
に訂正します。明細書第８頁１行目から２行目にかけての「第
２図及び第３図は同上の側面図」を「第２図は同
上の平面図、第３図は同上の側面図」に訂正しま
す。明細書第８頁４行目の「転造ダイスを示す平面
図」を「転造ダイスを示す正面図」に訂正します
。Amendment: March 25, 1982 The brief description of the drawing is amended as follows. "Plan view" on page 8, line 1 of the specification is "front view"
I will correct it. "Figures 2 and 3 are side views of the same as above" from line 1 to line 2 of page 8 of the specification has been corrected to "Figure 2 is a plan view of the same as above, and Figure 3 is a side view of the same as above." To do. On page 8, line 4 of the specification, "Plan view showing rolling dies" is corrected to "Front view showing rolling dies."

Claims

[Scope of utility model registration request]

In a rolling die for forming a tapping screw, which is provided with rolling grooves on the opposing surfaces of a pair of parallelly arranged blocks that intersect at a required lead angle with respect to the longitudinal axis of the blocks, tapping in the rolling grooves is provided. A rolling die characterized in that the lead angle of the thread forming part of the tapered end of the screw is set larger than the lead angle of other parts.