CN204294943U - A kind of fixture for numerically controlled lathe circular cutter holder - Google Patents

Abstract

A fixture used for a rotary tool rest of a numerically controlled lathe relates to the technical field of mechanical manufacturing. The fixture is pressed into the tool holder slot by screw 1 of CNC lathe tool holder. There is a V-shaped groove inside the fixture, and the straight shank drill bit is pressed into the V-shaped groove inside the fixture by screw 2. There can also be a tapered hole inside the fixture. The tapered shank drill bit is installed in the tapered hole of the fixture; the fixture is fixed in the tool holder of the CNC lathe, and an adjusting gasket is provided between the bottom surface of the fixture and the tool holder, and the upper surface of the fixture can also have a V-shaped groove. The utility model makes full use of the resources of the CNC lathe, installs the fixture on the four-station rotary tool holder of the common CNC lathe, installs the straight shank drill bit or the tapered shank drill bit in the V-shaped surface or the tapered hole inside the fixture, and can quickly locate the straight shank drill bit or The center position of the tapered shank drill does not need to be adjusted for its center height or the value of the small supporting plate. By changing different straight shank drills or tapered shank drills, the tool position can be quickly switched to ensure product quality, and it can also be used between turning and drilling. Realize the automation of the entire workpiece processing.

Description

A Fixture for Rotary Tool Holder of CNC Lathe

technical field

The utility model relates to the technical field of mechanical manufacturing, in particular to a fixture for a rotary tool holder of a numerically controlled lathe.

Background technique

The four-station rotary tool post of the existing ordinary CNC lathe, when turning some workpieces with simple shapes, the tool position is often idle, and when the center hole, through hole or threaded hole of the workpiece needs to be processed, the rear part of the tailstock of the rotary CNC lathe The handle and the replacement of the center drill and the drill bit all need manual operation, which is labor intensive and inefficient.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of the invention of the utility model is to provide a fixture for the rotary tool holder of the CNC lathe, so as to improve the processing efficiency and reduce the labor intensity of the operator.

In order to achieve the above object, the fixture of the utility model is pressed into the tool groove of the tool rest by the screw one of the CNC lathe tool rest, the inside of the fixture has a V-shaped groove, and the straight shank drill bit is pressed inside the fixture by the second screw of the fixture in the V-shaped groove.

The inside of the clamp may also have a tapered hole, and the tapered shank drill bit is installed in the tapered hole in the clamp.

The clamp is fixed in the CNC lathe tool holder, and an adjusting gasket is arranged between the bottom surface of the clamp and the tool holder, and a V-shaped groove may also be provided on the upper surface of the clamp.

The angle α of the V-shaped groove is 0°<α<180°.

Compared with the prior art, the utility model makes full use of the resources of the CNC lathe, installs the fixture on the four-station rotary tool rest of the common CNC lathe, and installs the straight shank drill bit or the tapered shank drill bit on the V-shaped surface or cone inside the fixture. In the hole, you can quickly locate the center position of the straight shank drill bit or the tapered shank drill bit, and the center height or the small supporting plate value does not need to be adjusted. By changing different straight shank drill bits or tapered shank drill bits, the tool position can be quickly switched to ensure product accuracy. quality, and it is also possible to automate the entire workpiece machining between turning and drilling.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Fig. 2 is the structural diagram of another structure of the present utility model.

FIG. 3 is a schematic structural diagram of the clamp in FIG. 2 .

Fig. 4 is the structural diagram of another structure of the utility model.

Detailed ways

As shown in Figure 1, the fixture 4 is pressed into the groove of the tool post 1 by the screw 1 of the CNC lathe tool post 1, and the straight shank drill 3 is pressed into the V-shaped inside of the fixture 4 by the screw 2 5 of the fixture 4. In the groove, the center height H of the V-shaped surface of the fixture 4 is matched with the center of rotation of the CNC lathe workpiece. The center height H of the V-shaped surface is the size of the center of the V-shaped surface of the V-shaped fixture. The center height of the center height meets the requirements of processing. When replacing the straight shank drill 3 with different diameters, the center height H does not need to be adjusted. The angle α of the V-shaped groove of the fixture 4 can be designed and manufactured according to the actual size of the straight shank drill 3. The angle α of the V-shaped groove 0°<α<180°. When drilling the workpiece, just adjust the horizontal position of the small pallet of the CNC lathe to coincide with the rotation center of the workpiece, and the center height does not need to be adjusted.

As shown in Figure 2 and Figure 3, the fixture 4 is pressed into the tool groove of the tool rest 1 by the screw 1 of the CNC lathe tool rest 1, the inner hole of the fixture 4 has a Morse taper, and the tapered shank drill bit 6 is installed on the fixture In the tapered hole inside 4, the center height H of the Morse taper of the fixture 4 is matched with the numerical control lathe used for installation, so that the center height of the tapered shank drill bit 6 can meet the requirements of processing. After the first installation, adjust the small supporting plate value of the CNC lathe, and the tapered shank drill bit 6 coincides with the rotation center of the workpiece. When drilling the workpiece, it is not necessary to adjust the small supporting plate value of the CNC lathe by replacing the tapered shank drill 6 with a different diameter. 4 Internal taper-bore fits are self-centering. Meanwhile, the tapered shank drill bit 6 can be a drill chuck with a tapered shank, and the drill chuck with a tapered shank can be installed in the tapered hole inside the fixture 4, and the drill chuck with a tapered shank can be used to clamp a straight shank drill bit, so that the Fixtures have a wider range of use. The Morse taper of the taper hole of the fixture 4 can be designed according to the installation space of different tapered shank drill bits 6 and CNC machine tool holders (or other self-locking tapers) to meet different uses. Require.

As shown in Figure 4, the upper surface of the fixture 4 has a V-shaped groove, and the straight shank drill bit 3 is pressed in the V-shaped groove of the fixture 4 by the screw 1 of the CNC lathe tool rest 1, and the bottom surface of the fixture 4 is in contact with the knife. Different adjusting gaskets 7 are arranged between the frames 1 for compensating and replacing the straight shank drills 3 with different diameters, so that the center height of the straight shank drills 3 can meet the processing requirements. When drilling the workpiece, just adjust the position value of the small supporting plate of the CNC lathe in the horizontal direction to coincide with the rotation center of the workpiece. The angle α of the V-shaped groove of the fixture 4 can be designed and manufactured according to the size of the actual straight shank drill 3, and the angle α of the V-shaped groove is 0°<α<180°.

Claims (4)

1. A clamp for a CNC lathe rotary tool post, characterized in that: the clamp (4) is pressed into the tool groove of the tool post (1) by the screw one (2) of the CNC lathe tool post (1), and the clamp The inside of (4) has a V-shaped groove, and the straight shank drill bit (3) is pressed in the V-shaped groove inside the fixture (4) by the second screw (5) of the fixture (4). 2. A fixture for a CNC lathe rotary tool post according to claim 1, characterized in that: the fixture (4) may also have a tapered hole inside, and the tapered shank drill bit (6) is installed on the fixture (4) ) inside the taper hole. 3. A clamp for a CNC lathe rotary tool post according to claim 1, characterized in that: the clamp (4) is fixed in the CNC lathe tool post (1), and the bottom surface of the clamp (4) is in contact with the tool Adjusting spacers (7) are arranged between the frames (1), and V-shaped grooves are also provided on the upper surface of the fixture (4). 4. A fixture for a CNC lathe rotary tool post according to claim 1 or 3, characterized in that: the angle α of the V-shaped groove is 0°<α<180°.