SU1074661A1 - Apparatus for radial movement of cutter - Google Patents

Abstract

THE DEVICE FOR THE RADIAL CUTTER'S PICTURE, containing a boring mandrel in the spindle of the machine, a mandrel with mechanisms for re-clamping the toolholder, and a tuning device, is fixed with a “.” J it on the machine table with the ability to interact with the specified fur. the fact that, in order to increase the accuracy of the cutter on the size of the HCKjrrotrocheni the deflection of the mandrel during adjustment, the tuning device is made in the form of a sleeve with an internal conical surface and coaxially installed in it zkinennym rod, whose end surface is endowed wife key and toolholder clamping mechanism provided with a screw, respectively, with said CIM vzaimodeystvuk well. with a key, at the floor (the tool holder in the mandrel is set movably in the radial direction and with possible interaction with the inner crown (the face of the sleeve). Fffl & 41 4 CXi Fi9.1

Description

The invention relates to a machine tool industry and can be used for machining holes on software-controlled machines that are not equipped with a programmable radial movement of the tool.

A device for radial movement of the cutter is known, which comprises a boring mandrel mounted in the machine spindle with mechanisms for moving and clamping the toolholder, and a setting device mounted on the machine table with the possibility of interaction with the said mechanisms 1.

A disadvantage of the known device is the deflection of the mandrel, which occurs when adjusting the tool, to the size of the treatment.

The purpose of the invention is to improve the accuracy of the cutter installation on the size by eliminating the deflection of the mandrel.

The goal is achieved by the fact that in the device for radial movement of the cutter, which contains a boring mandrel fixed in the machine spindle with mechanisms for moving and clamping the rectifier, and a setting device mounted on the machine table with the possibility of interacting with the indicated mechanisms, the setting tool is made in. a sleeve with an inner conical surface and a spring-loaded stem coaxially installed in it, the end surface of which is provided with a key, and the tool holder clamping mechanism is provided with a screw interacting with the key, respectively, while the tool holder in the mandrel is movably mounted in the radial direction and with the ability to interact with the internal the conical surface of the sleeve.

Fig, 1 shows the device attached to the machine, the general view; in fig. - view A in FIG. one; in fig. 3 - boring bar, general view; in fig. 4 shows a section B-B in FIG. 3; in fig. five -. view B in FIG. 3; in fig. 6 — adjusting device, general view; in FIG. 7 a section of GG in FIG. 6

The device for radial movement of the cutter includes a boring mandrel 2 mounted on the machine spindle 1 and a setting device 4c fixed on the machine table 3. The 4c boring mandrel consists of the parasite mechanisms located in the housing 5 and the tool holder clamp 6. The clamping mechanism 7 is mounted in the mandrel housing 5 2, in contact with the tool holder 6, and the stop 8, rigidly fixed to the tool holder B. The clamp 7 consists of a rod 9 and a spring-loaded cap 10..

The clamping mechanism of the toolholder 6 includes a screw pair in the form of a nut 11, mounted in the housing 5 of the mandrel 2, and a screw 12, which abuts through the biscuit 13 into the tool holder 6. The head 14 of the screw 12 has a socket 15 on the front side. The head 14 is equipped with a spring-loaded latch 16 ,. the bevel of which is included in the corresponding groove 17 of the head.

The adjusting device 4 consists of a housing 18, to the end of which a bell 19 is attached, which has an inner bearing surface 20, which is tapered for interaction, with the stop 8 of the mechanism for moving the head and arm. A spring-loaded rod 21 is coaxially placed inside the housing 18 and the socket 19, at the end of which a key 22 is attached to the socket. The stem 21 is made telescopic with the possibility of axial movement of the outer sleeve 23. Inside the stem 21, a spring 25 is placed on the guide rod 24, the force of which is adjusted by a nut 26. An outer cup 23 through a safety 1 ft, including a movable 27 and a fixed 28 half coupling, is connected to the housing. The force of the springs 29 of the safety clutch is adjusted by the nut 30.

The device works as follows.

Installing the cutter on the initial size of the bore is made outside the machine, after which the boring mandrel 2 is fixed in the spindle 1 and the hole is bored. When moving from one diametral size of treatment to another, it is necessary to move the tool holder 6 with the tool in the radial direction. For this, a command from the CNC produces:

spindle stop;

output of it on the machined hole;

approach to adjusting device 4;

the combination of the key 22 of the tuning device 4 with the socket 15 of the head 14 of the screw 12 of the toolholder clamping mechanism 12;

rotating spindle 1 to expand the toolholder;

axial movement of the spindle by an amount proportional to the radial movement of the toolholder;

rotating the spindle to expand the toolholder after adjustment;

removal of the spindle from the tuning device.

After aligning the key 22 with the socket 15 by rotating the spindle, the screw 22 is unscrewed, freeing the cracker 13, and the tool holder 6 under the action of

clamping 7 variable speeds in the radial direction until the stop 8 contacts the supporting surface 20 of the socket 19;

During the axial movement of the spindle, the spring-loaded rod 21 is sunk, and the stop 8, interacting with the bearing surface, sets the tool holder 6 to the specified machining size. The clamping of the tool holder 6 is performed by rotating the spindle, wherein the screw 12 is screwed in and the tool holder is clamped through the biscuit 13. When the screw 12 is informed of the rotational moment more than is necessary for clamping the toolholder, the safety clutch engages, while the movable coupling half 27 with spring-loaded balls rolls over the fixed clutch coupling 28.

The advantage of the advanced device in comparison with the known one is the exclusion of the tool holder at the time of setting the tool to the size of the treatment.

Type A

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Claims (1)

RADIAL DEVICE I CUTTER MOVEMENT, containing a boring tool fixed in the machine spindle with mechanisms for moving and clamping the tool holder, and a tuning device mounted on the machine table with the possibility of interacting with these mechanisms, which is related to the fact that , in order to increase the accuracy of setting the cutter to a size by and from rolling the deflection of the mandrel during adjustment, the tuning device is made in the form of a sleeve with an internal conical surface and a spring-loaded rod coaxially mounted in it, the end surface which is provided with a key and is provided with a clamping mechanism for tool holder according screw cooperating with a mention. wrench, while the tool holder in the mandrel is mounted movably in the radial direction and with the possibility of interaction with the inner conical surface of the sleeve. »SU 1074661 FIG. R