SU1373487A1 - Spindle assembly for horizontal boring machine - Google Patents

Abstract

The invention relates to the field of machine-tool construction and can be used in the spindle units of horizontal boring machines with drawbars and drawbars. The purpose of the invention is to simplify the design of the spindle assembly when milling body parts by using the retractable spindle stroke for forcefully closing it with a hollow uJPindel. A cone bushing 6 is fixed at the front end of the sliding pin 4, and a conical surface 7 is made at the front end of the hollow spindle 3. When the sliding pin 1 or 4 moves from the drive 5 to the rearmost position, the conical surfaces of the sleeve 6 and the spindle 3 are mated by force closure spindles. 2 Il.

Description

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The invention relates to a machine tool industry and can be used in horizontal boring machines with retractable spindles.

The purpose of the invention is to simplify the construction of the assembly when milling body parts, which is provided by using the sliding pinch stroke for forcefully closing it with a hollow pinch.

FIG. 1 shows a spindle assembly in section with a sleeve having an outer conical surface; in fig. 2 - the same, with a sleeve having an internal conical surface.

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Claims (1)

Invention Formula surfaces of body parts. In the housing 1 on the bearings 2, a hollow spindle 3 with a rotational drive (not shown) is mounted. In the hollow spindle 3, a sliding spindle 4 is installed, which has the possibility of axial movement from the actuator 5. At the front end of the extendable 20, a spindle 4 is fastened with a sleeve 6 having an outer or inner surface. At the front end of the hollow pin 3, there is a conical surface 7, mating with a corresponding bushing 6. The gear 8 serves to drive the rotation of the hollow spindle. The key 9 serves l, 1 torque transmission from the hollow spindle 3 to the extendable spindle. four. The device works as follows. The spindle assembly is the horizon of an exact machine, in the case of which, on bearings, hollow with a front surface made on its core bearing into the spindle, and a clamping mechanism n made in the form of a conical surface interconnected so as to unit during the implementation of body parts, the cone is rigidly fixed on the front of the mobile unit. one srig.2 Compiled by I. Pokrasova Tehred I. Bepei; Proofreader S. Cherni Circulation 879 Subscription VNIIPI USSR State Committee but .te.aam inventions and discoveries 1 13035, Moscow, F-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 Editor V. Kovtun Order 328/8 From the drive of the main movement of the machine (not shown), hollow spindle 3 is rotated through the brush 8, which, rotating in the bearings 2, transmits torque to the spindle 4 through the key 9. The sliding spindle 4 moves axially from the drive 5. When moving the extendable spindle 4 to the rearmost position, the sleeve 6 with its conical surface mates with the conical surface of the hollow pin 3, made a force closure. The position of the retractable spindle, when it is pushed into the hollow spindle, is used in milling machining Invention Formula her body parts. surfaces of body parts. new The spindle unit of a horizontal boring machine, in the case of which the bearings are installed, has a hollow spindle with a tapered surface at its front end, carrying a retractable spindle, and a clamping mechanism of the latter, made in the form of a tapered bushing installed with the possibility of interaction with the specified tapered surface, which differs By the fact that, in order to simplify the construction of the assembly during the milling of body parts, the tapered sleeve is rigidly fixed on the front end of the extendable pinboard. one