FR2520647A1 - PERFECTLY IMPROVED TOOL TURRET FOR MACHINE TOOLS - Google Patents

Abstract

ADVANCED TOOL-HOLDER TURRET FOR MACHINE-TOOLS. EACH TOOL HOLDER 12 MOUNTS ON THE BODY 11 OF THE TURRET 10 THANKS TO A CORNER 19 HAVING A SIZE 22 AS A DOVETAIL HOLDING THIS TOOL HOLDER AND A SIZE 20 OBLIQUE WITH A GROOVE 18 IN WHICH A FLANGE 17 ENTER OF A SLEEVE 15 THAT IS SCREWED ON OR UNSCREWED, WHICH TIGHTENS OR LOOSEN CORNER 19 AND THEREFORE BLOCKS OR RELEASES TOOL HOLDER 12.

Description

The invention relates to a turret for machine tools of the type

  comprising a plurality of supports for tools that must intervene during machining

of a room.

  These tool holders are mounted on the turret so that they can be substituted for one another according to

  the kind of machining to be performed on the part.

  A turret of this type is described, for example

  ple, in the Italian utility model No. 106 972.

  In turrets of this type, there is the disadvantage that each tool holder comprises its own locking means on the body of the turret, which must be maneuvered separately during assembly operations and

dismantling tool holders.

  The main object of the invention is to overcome the above-mentioned drawback by means of an improved turret in which all the tool holders can be mounted and dismounted in a simple and rapid manner, by the maneuver.

unique of a single device.

  This object is achieved according to the invention with a

  turret for machine tools of the type comprising a

  tool holder mounted on the turret body via a wedge which can be locked and / or

  unlocked by means of a single coaxial

in relation to that body.

  Preferably, each corner has a dovetail front or outer side joined to the tool holder and a cuneiform rear or inner side, movable in a

  corresponding seat of the body of the turret and connected

  tionally to the single order.

  Preferably, this control comprises a sleeve that can be screwed into an annular recess formed in the body of the turret and ending in an annular flange introduced into recesses provided

  in the wedge-shaped side of each corner.

  The structural and functional characteristics

  of the invention, as well as its advantages over the known technique, will emerge more from the

  detailed description which will follow, given only

  as a non-limitative example; reference is made to the accompanying drawings in which FIG. 1 is a vertical sectional view of a turret according to the invention,

  Figure 2 is a section on II-II of Figure 1.

  In the drawings, the turret of the invention is designated as a whole by reference numeral 10; it is constituted, as regards its structure, by a

  central body 11, on which are mounted a plurality of

  12 tools of which only two were represented, for

reasons for simplicity.

  According to the invention, the turret 10 has,

  coaxially to a central hole 13 of mounting on a machine-

  tool, an annular threaded housing 14 in which is

  screws a sleeve 15 provided with an operating lever 16.

  The sleeve 15 ends at its lower portion

  upper by an annular flange 17 which is designed to be able to enter and slide in recesses 18 that have corners 19; these wear the

supports 12 tools.

  Each corner 19 has an oblique posterior side called wedge-shaped 20 that can move in a complementary housing 21 provided in the body 11 and an anterior side dovetail 22 which can be engaged

with a tool holder 12.

  It thus appears obvious that by rotating the sleeve 15 in the direction that tends to unscrew it from the body 11, all the corners 19 are controlled by the action of the flange 17 on the sides 20 so as to move upwards and at the same time to advance radially so as to allow the tool holders 12 to be removed from their housing

23 on the body 11.

  By against the screwing of the sleeve 15 in the body 1 i causes the downward movement and the recoil in the radial direction of the wedges 19, which firmly and stably tighten the tool holders 12 in their housing 23 corresponding, thanks to the traction exerted by each

  dovetail 22 on its respective tool holder.

  This achieves the object of the invention

mentioned above.

Claims (3)

  1 Turret for machine tools of the type comprising   a plurality of removably mounted tool holders, characterized in that each tool holder (12) is mounted on the body (11) of the turret (10) via a wedge (19) which can be blocked and / or unlocked by means of a single command (15) arranged coaxially with said body (11).   2 turret according to claim 1 characterized in that each corner (19) has a dovetail front side (22) engageable with the tool holder (12) and a wedge-shaped rear side (20) can move in a corresponding housing (21) of the body (11) of the   turret and operably connected to said control (15).   3 turret according to claim 2 characterized in that said control (15) comprises a sleeve that can be screwed into an annular recess (14) of said body (11) of the turret (10) and ending in an annular flange (17) engaged. in recesses (18) which the   wedge-shaped sides (20) of the corners (19).