SU1311856A1 - Cutting tool - Google Patents

Abstract

The invention relates to the processing of materials by cutting. The aim of the invention is to expand the technological capabilities of the cutter by reducing the size of the device for coolant supply. In the holder 1 there is a hole 5 in which a rod 7 is placed, rigidly connected to the holder 1, and a spool 8 made in the form of a cap mounted on the rod 7 with the possibility of movement. The spool and rod 7 are provided with a system of holes for coolant supply to the cutting part 2 of the cutter through the hole in the spool 8. For supplying coolant to the main rear surface, the hole in the holder 1 communicates with a channel having access to the main rear surface .. 4 Cp. f-ly, 6 ill. (L 00 00 ate about

Description

The invention is related to metalworking.

The purpose of the invention is to expand the technological capabilities of the cutter by reducing the size of the device for supplying coolant to the cutting parts of the cutter during the cutting process.

Fig. 1 shows a cutter, a longitudinal cut; figure 2 - means for pressing the spool to the locking surface; Fig. 3 shows a cutter with an additional channel for coolant supply to the main back surface of the cutter, a partial section; figure 4 - valve; in fig. 5 - groove on the rod; figure 6 is a cutter with the location of the valve from the side of the main rear surface, a longitudinal section.

The cutter consists of a holder 1 and a cutting part 2 from the front 3 and the main back 4 surfaces. In the holder there is a hole 5, perpendicular to the support plane 6, in which the device is placed. The coolant supply to the cutting part of the cutter during the cutting process consists of a rod, 7 and a spool 8, made in the form of a cap and mounted on the rod with Axial movement. Rod 7 is rigidly connected to. the holder by means of a threaded connection and is locked with a nut 9. The rod 7 has an axial bore 10 closed by a stopper 11 and radial bores 12 for coolant supply. The spool 8 has a radial bore (slit) 13 to guide the coolant to the cutting part of the bit and the bore 14. A spherical or inclined surface 15 is made on the spool head. On the rod 7 there is a locking surface, made in the form of a groove 16 interacting with a screw 17 installed in the spool 8. A means of pressing the spool 8 to the locking surface designed as a spring 18 'for connection with the coolant supply system on the rod 6 is made a surface 19 to which is attached a rubber hose (not shown).

In the pressing means of the spool 8 (FIG. 2), the axial bore 10 in the rod 7 is made through, and in the latter, the pin 20 is rigidly connected with the spool (cap) 8

The pressing tool can also be provided as an additional

1311856

radial bore 21 (in figure 2, the hole 21 is shown arbitrarily). In this case, the pressure force from the coolant to the spool 8 will increase, so this option can be used when a force is provided that, when the cutter is working, can move the spool 8 inside the holder to communicate the holes 10 and 12 of the rod with the hole

53 spool.

To supply the SAL (at the same time towards the front surface 3 and the main rear surface 4, the hole 5 is in communication with the channel 22, having

exit to the main back surface (fig.Z). For this, additional grooves 23 and 24 are also provided on the spool 8 and the rod 7, respectively communicated with the radial holes 25 and 26.

The spool 8 can be made L-shaped (figure 4) with a protruding part 27 having a surface 28 located at an angle to the front

surface 3.

A notch 29 is made in the cutter with a depth determined by the movement of the blade 8 along the axis. Under conditions when the spool 8 is in operation

should be moved along the axis of your axis under the action of chips, it can be performed noBopoTi-ibiM (Fig.5). For this, the groove 30 on the rod 7 is screwed. This embodiment of the spool prevents the hole 13 from scoring chips at the initial moment of its descent, when the hole 13 has not yet descended relative to the front surface 3.

To ensure the coolant fc of the cutting part is supplied from the side of the main rear surface 4 (FIG. 6), the hole in the holder is located parallel to the support surface 6. At the same time,

- the spool head 8 is rotatably attached to the ball 31 for engaging with the surface of the part during machining, and the hole 13 is located parallel to the main rear surface.

The cutter works as follows.

The cutter is installed and secured in the cutter holder. It is connected to the coolant system with high pressure. When the part is rotated and the feed moves, the converging drain chips act on the surface 15 of the spool head 8 and move it along its axis.

31

until the cylindrical end of the screw I7 rests on the opposite end of the longitudinal groove 16. In addition, axial 10 and radial 12 and 13 holes communicate with each other and coolant flows along the front surface 3 under the converging chips. At the end of the treatment, the cap rises up under the action of the spring 18, thereby overlapping the radial holes 12. The spool 8 can move downwards and when exposed to any element (this element can be associated with a magnetic or other device), for example, when chips form elements or when they get broken chips. When coolant is applied simultaneously towards the front 3 and the main rear 4 surfaces due to the displacement of the spool 8, axial 10 and radial 26 holes communicate with each other, groove 24, radial hole 25, groove 23. When installing the spool with access to the main rear surface 4, the surface of the part acts on the ball 31 and moves the spool 8 in the axial direction, from which axial 10 and radial 12 and 13 holes communicate with each other (Fig.6 ), and coolant gives with towards the main back surface.

The proposed cutter works in the following modes. Coolant pressure is used in the range of 0.5-2.5 MPa. If fast steel cutting tools are used, the cutting speed is 25–70 m / min, and the feed rate is 0.1–0.6 mm / rev. If carbide-equipped cutting tools are used, the cutting speed is 7-5-200 m / min, and the feed is 0.1 mm / rev.

0.5

Claims (5)

1. Cutter containing the cutting part from the front and main back top with O 5 0 -5 0 50 five 8564. bones, a holder and a device for supplying coolant to the cutting part, comprising a spool cooperating with a fixing surface on a device element rigidly connected to the holder, and means for pressing the spool against said fixing surface, characterized in that cutter, an element of the device rigidly connected to the holder, made in the form of a rod placed in a hole made in the holder, and the spool is made in the form of a cap with a retainer mounted on the indicated axially with axial movement, with the locking surface made in the form of a groove for interacting with the said retainer, wherein axial and radial holes are provided in the rod and cap for coolant supply. 2: The cutter according to claim 1, wherein the tool is for pressing the slide valve in the form of a finger mounted in an axial hole of the rod with the possibility of movement, and rigidly connected to the cap. 3. Cutter pop. 1, which is also distinguished by the fact that the holder has a channel connecting the main rear surface with a hole in which the rod is installed, and additional bores and radial holes for coolant supply to the specified channel are made on the cap and rod. . 4. Cutter pop. 1, characterized in that the cap is L-shaped and provided with a surface at an angle to the front surface of the cutting part of the tool. 5. Cutter according to Claim. 1, clause 1 and 2 with the fact that the groove of the rod is made screw. u 12 / V7 " 2. Fi.Z 1e Editor A. Kozoriz, Fit.6 Compiler B, GOLDEN Techred N Glushchenko Order 2675 Circulation 975. Subscription BNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proektna str., 4 Proofreader I. Muska