SU1103964A1 - Device for clamping tool in spindle - Google Patents

Abstract

A SPINDLE TOOL CLAMP DEVICE containing a spindle ring with a wedge element and at least one clamping cam mounted in the spindle radial hole with the ability to interact with the wedge member and with a beveled groove on the tapered shank of the tool holder for the clip in the slot spindle, different IQM, that, in order to expand the scope and reduce the axial envelope of the spindle, the ring on the spindle is fixed rigidly, and the wedge The element is made in the form of a rod installed in a hole made in the ring with the ability to interact with a pusher coaxially arranged with it and inserted into the unfolding mechanism of the tool holder, the rod is spring-loaded in the direction of the pusher, the cam is in the direction of the rod, and the axes of the clamping cam and rod are located in a plane, perpendicular to the axis of the spindle .. & amp & (L With so O5 T 4

Description

The invention relates to a machine tool industry, in particular, to devices for clamping a tool in spindles of machines with automatic tool change — multi-operation machines such as a machining center, etc.

A device for clamping a tool in a spindle is known, comprising a ring with a wedge element mounted on the spindle and at least one clamping cam mounted in the spindle's radial bore with the ability to interact with the wedge element and with a twisted surface of the groove on the conical shank of the tool holder for the clamp in the nest nip 1.

The known device can not be used on machines with automatic tool change and has a significant axial spindle dimension.

The purpose of the invention is to expand the scope and reduce the axial size of the pinch.

This goal is achieved by having a tool for clamping a tool in a spindle comprising a ring with a wedge element mounted on the shafts and at least one clamping cam mounted in the radial bore of the spindle with the ability to interact with the wedge element and with a beveled groove surface on the conical shank tool holder for clamping in the spindle socket, the wedge element is made in the form of a rod mounted in an opening made in the ring with the possibility of interactions The pusher inserted into the device of the unclamping tool holder is aligned with the pusher coaxially with it, the rod is spring-loaded in the direction of the pusher, the cam is in the direction of the rod, and the axes of the clamping cam and the rod are in a plane perpendicular to the spindle axis.

FIG. 1 shows a device in longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - unclamping mechanism of the mandrel; in fig. 4 — node I in FIG. one; in fig. 5 is a view B in FIG. four.

The device contains a ring 1 mounted on the spindle 2. In the radial holes of the spindle, clamping cams 3 are installed, and in the holes of the ring located perpendicular to the axis of the cams 3, wedge elements are installed, made in the form of rods 4 with beveled surfaces 5. Rods 4 spring-loaded in the direction of the pushers 6 of the unclamping mechanism 7 of the tool holder 8 installed in the slot of the machine spindle. On the tapered shank of the tool holder 8 there are two parallel diametrically opposite grooves 9 with forward-facing oblique surfaces 10. The clamping cams 3 are installed in the radial holes of the pinch with

the ability to move and interact with the beveled surfaces 5 of the rods 4 and the surfaces 10 of the grooves 9 on the tapered shank of the tool holder 8. Spring-loaded pushers 11 interact with the protrusions 12 on the clamping jaws in the direction of the rods 4. The clamping jaw surfaces interacting with the beveled surfaces

5 rods 4 are cylindrical in shape, which ensures their contacting along line 13 and the clamping force can be increased, the springs 14 clamp the mandrel. Pushers

The mechanism 7 for unclamping the tool holder is located coaxially with the rods 4, and the mechanism of the unclamping driven by the force cylinder is installed, in the case of using the device on a turret head, on a machine caliper (not shown).

The device for clamping the tool in the rod works as follows.

0 To replace the used tool, the pushers 6 press the rods 4 and move them, compressing the springs 14, and the flat surfaces 5 release the cams 3, which, under the action of the pushers 11, exit the grooves 9, releasing the mandrel 8. After installing the new tool into the spindle slot 2 the pushers 6 move to their original position, the springs 14 move the rods 4, and their beveled surfaces 5 move the cams 3 and press

0 them to the surfaces of the 10 grooves 9, which ensures the clamping of the tool in the spindle. In order to increase the clamping force of the mandrel 8, the surfaces 10 are made with a small angle (15-20 °) of the inclination of the surface 10, and the withdrawal of the cams 3 from the grooves 9 is ensured by the 5 pushers 11.

Achieving a positive effect when using the proposed invention is achieved by expanding the field of application of the device and reducing the axial size of the spindle equipped with a device for clamping the tool. WITH

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Claims (1)

DEVICE FOR CLAMPING A TOOL IN A SPINDLE, comprising a ring with a wedge element mounted on the spindle and at least one clamping cam mounted in the radial bore of the spindle with the possibility of interaction with the wedge element and with the beveled surface of the groove on the tapered shank of the tool holder intended for clamping in the spindle socket, characterized in that, in order to expand the scope and reduce the axial dimension of the spindle, the ring on the spindle is fixed rigidly, and the wedge element nt is made in the form of a rod installed in a hole made in the ring with the possibility of interacting with a pusher arranged coaxially with the pusher mechanism introduced into the device, the rod being spring-loaded in the direction of the pusher, the cam in the direction of the rod, and the axes of the clamping cam and the rod are located in a plane perpendicular to the axis of the spindle. S g ω Figure 1