JPH0347772Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tool for machining work, and more particularly to a grooving and parting holder for carbide which is used in a lathe and the like to perform grooving and parting work.

BACKGROUND OF THE INVENTION Various types of grooving and parting bits have been proposed and used.

Problems to be Solved by the Invention Regarding bits for machining work, we provide a grooving parting holder that supports grooving parting bits that use carbide tips made from cemented carbide, ceramic, sintered metal, etc. The purpose is to

Means for Solving the Problems According to the present invention, there is provided a grooving and parting holder for carbide in which an elongated flat plate-shaped cutting tool body with a carbide tip attached to the upper end of the front end is attached and fixed so as to be movable in the front and back direction. A sliding support part that slidably supports the cutting tool body in the front and back direction is integrally connected to one side of the rod-shaped mounting part with an approximately rectangular cross section, and extends over the entire length of the mounting part, and is connected to the upper and lower edges of the cutting tool main body. are provided with inclined surfaces that taper toward each other from the side surfaces abutting the sliding support, and the side surfaces of the sliding support have dovetail grooves complementary to the sloped surfaces extending in the longitudinal direction over the entire length thereof. A plurality of holes of the same diameter are provided at equal intervals along the center line of the cutting tool body, a carbide tip can also be attached to the lower end of the rear end of the cutting tool body, and the side surface of the sliding support portion is provided with a carbide tip. is provided with at least two screw holes spaced apart by an integral multiple of the pitch of the holes in the tool body, and a tightening bolt that passes through the hole in the tool body that engages with the dovetail groove of the sliding support part and engages with the screw hole. A grooved parting-off holder for carbide is provided.

Function The mounting part is suitable for mounting on the tool post of a lathe, and the length of the tool body protruding from the holder can be changed depending on the diameter of the workpiece. The cutting tool body is reliably supported by the sliding support portion of the holder, and machining operations can be performed accurately. A carbide tip can also be attached to the lower end of the rear end of the tool body, and a large number of holes with the same diameter are provided at equal intervals along the center line of the tool body, and two of these holes are passed through to insert the carbide tip into the holder body. Since tightening bolts are provided that engage with the respective screw holes, it is possible to reversely insert the tool body, and work efficiency can be significantly improved.

Embodiment In the embodiment of the present invention shown in FIGS. 1 to 4, reference numeral 1 denotes a cutting tool body, which has an elongated flat plate shape, and has a plurality of holes 2 of the same diameter at equal intervals along its longitudinal center line. It is set in. A carbide tip 4 is removably attached to the upper end of the front end of the tool body 1. The upper and lower edges of the cutting tool body 1 are provided with inclined surfaces 3 that taper outward and toward each other.
(only one shown) is provided.

Reference numeral 5 denotes a holder, which includes a rod-shaped attachment part 6 having a substantially rectangular cross section, and a sliding support part 8 integrally connected to one side surface 7 of the attachment part 6 over its entire length.
The attachment portion 6 has a cross-sectional shape suitable for attachment to a tool rest of a lathe, etc., and the thickness of the sliding support portion 8, that is, the height in the vertical direction is larger than the thickness of the attachment portion 6. This configuration allows the use of a wide cutting tool body 1 and increases strength and rigidity.

The sliding support part 8 includes the inclined surface 3 of the tool body 1,
Dovetail grooves 9, 9 complementary to 3 and screw holes 10, 1
1 is provided. The screw holes 10 and 11 are spaced at an interval that is an integral multiple (in the illustrated embodiment, twice) of the pitch of the hole 2 of the tool body 1.

Tightening bolts 12, 12, each having a head with a larger diameter than the diameter of the hole 2, pass through the hole 2 and are screwed into the screw holes 10, 11, thereby fixing the tool body 1 to the holder 5. Concatenated.

When the bolts 12, 12 are removed, the tool body 1 can freely move forward and backward along the dovetail grooves 9, 9 of the sliding support part 8 of the holder 5, and the bolts 12, 1
By inserting and tightening the hole 2, it can be fixed in a plurality of positions determined by the pitch of the hole 2.

Effects of the invention According to the invention, the holder is integrated with a mounting part suitable for fixing to a tool rest of a lathe, etc. and a sliding support part that supports the tool body so that it can be moved back and forth and fixed in multiple positions. The structure is simple and has high rigidity, and the tool body can be reliably supported, and the position of the tool tool body can be easily adjusted, making it suitable for grooving and parting work. It has a significant effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the carbide grooving cut-off holder of the present invention, Fig. 2 is a top view of the holder, Fig. 3 is a side view of the holder, and Fig. 4 is a front view of the holder. be. 1...Bite body, 2,2...hole, 3,3...
Inclined surface, 4... Carbide chip, 5... Holder, 6...
...Mounting part, 7...One side, 8...Sliding support part,
9, 9...Dovetail groove, 10,11...Screw hole, 1
2...Tightening bolt.

Claims (1)

[Claims for Utility Model Registration] 1. A grooving and cutting-off holder for carbide, which attaches and fixes an elongated flat plate-shaped cutting tool body to which a carbide tip can be attached to the upper end of the front end so as to be movable in the front and back direction, and which is approximately rectangular. A sliding support part that supports the cutting tool body so as to be slidable in the front and back direction is integrally connected to one side of the mounting part, which has a rod-shaped cross section, over the entire length of the mounting part, and sliding support parts are attached to the upper and lower ends of the cutting tool main body. Slanted surfaces are provided that taper toward each other from the side surfaces that abut on the tool body, and a dovetail groove that is complementary to the sloped surface is provided on the side surface of the sliding support section and extends in the longitudinal direction over its entire length. A large number of holes with the same diameter are provided at equal intervals along its center line, and a carbide tip can also be attached to the lower end of the rear end of the tool body, and a hole in the tool body is provided on the side surface of the sliding support. Two screw holes are provided at an interval that is an integral multiple of the pitch of the tool body, and two of the holes of the cutting tool body engage with the dovetail groove of the sliding support part.
A grooving cut-off holder for carbide, wherein tightening bolts are provided that penetrate through the two screw holes and engage with the screw holes, respectively. 2. The grooving cut-off holder for carbide according to claim 1, wherein the thickness of the sliding support portion in the vertical direction is larger than the thickness of the mounting portion.