CN-121973009-A - Terminal polarization-preventing positioning mechanism of compound turning milling lifting turret

CN121973009ACN 121973009 ACN121973009 ACN 121973009ACN-121973009-A

Abstract

The invention relates to a polarization-preventing positioning mechanism at the tail end of a composite turning and milling lifting tool turret, which comprises a support frame, a tool turret module and a polarization-preventing positioning module, wherein a convex ring is arranged on the outer side of the support frame, an annular base of the tool turret module is rotatably arranged on the convex ring, and the polarization-preventing positioning module is arranged between the annular base and the convex ring and comprises an end face fluted disc group, a floating sleeve and a driving control assembly. The fixed fluted disc is fixed on the end face of the convex ring, the movable fluted disc is axially movably arranged on the annular base, the floating sleeve is abutted with the movable fluted disc and axially moves under the drive of the drive control assembly, so that the meshing locking or the separating unlocking of the fluted disc is controlled. According to the invention, the positioning locking mechanism is arranged at the tail end of the cutter tower in front, so that the arm of force between the action point of cutting force and the locking point is greatly shortened, the overall rigidity of the cutter tower is obviously improved, the problem of tail end polarization under heavy cutting working conditions is effectively solved, and the processing precision and the surface quality are ensured.

Inventors

LUO XINGBANG
HUANG SIPING
ZOU XUEHONG

Assignees

广东仕兴鸿智能装备有限公司

Dates

Publication Date: 20260505
Application Date: 20260331

Claims (10)

1. The anti-polarization positioning mechanism for the tail end of the composite turning, milling and lifting tool turret is characterized by comprising a support frame and a tool turret module, wherein the outer side surface of the support frame is provided with a convex ring which protrudes outwards; Wherein, prevent polarization location module includes: the end face fluted disc group comprises a fixed fluted disc and a movable fluted disc which are oppositely arranged and used for realizing indexing locking of the turret, wherein the fixed fluted disc is fixed on the end face of the convex ring, and the movable fluted disc is axially and movably arranged on the annular base; the floating sleeve is axially and reciprocally movably arranged at the periphery of the convex ring, and the front end surface of the floating sleeve is abutted with the movable fluted disc; and the driving control assembly is used for driving the floating sleeve to axially move forwards or backwards so as to control the engagement or separation of the fixed fluted disc and the movable fluted disc.
2. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 1, wherein the driving control assembly comprises a plurality of inertial vibrators and a telescopic control module, the inertial vibrators are arranged on the supporting frame in a swinging mode, each inertial vibrator is provided with a contact towards the first end of the floating sleeve and is used for being matched with a cam profile surface on the periphery of the floating sleeve, and the telescopic control module is used for controlling the second end of the inertial vibrator to swing forwards or backwards so as to drive the floating sleeve to axially move.
3. The composite turning and milling lifting turret end polarization preventing positioning mechanism according to claim 2, wherein the cam profile surface is a wavy profile surface, the pressure angle at the wave trough is smaller than the friction angle to form a self-locking section, and the pressure angle at the wave crest is larger than the friction angle to form a non-self-locking section; When the contact enters the non-self-locking section under the driving of the telescopic control module, the floating sleeve is allowed to axially move so as to release the meshing of the fixed fluted disc and the movable fluted disc.
4. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 1, wherein the tool turret module further comprises a plurality of tool holders arranged along the circumferential direction of the outer side surface of the annular base, a plurality of through holes which are in one-to-one correspondence with the tool holders are formed in the annular base, one end of each through hole is communicated with the inner cavity of the annular base, and the other end of each through hole is communicated with a tool mounting hole of the corresponding tool holder.
5. A composite turning and milling lifting turret end polarization preventing positioning mechanism according to claim 2 or 3, wherein the inertial vibrator comprises a swinging arm hinged on the supporting frame through a pin shaft, and the telescopic control module controls the swinging arm to swing around the pin shaft under the action of cutting vibration, so that the contact is driven to move along the cam profile surface.
6. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 1, wherein the floating sleeve is connected with the supporting frame through an axial guide pin, a guide groove for sliding the axial guide pin is formed in the floating sleeve, and the extending direction of the guide groove is parallel to the axial direction of the tool turret module so as to limit the floating sleeve to rotate relative to the supporting frame.
7. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 6, wherein a wear-resistant antifriction layer is arranged between the inner side surface of the floating sleeve and the outer peripheral surface of the convex ring.
8. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 1, wherein a labyrinth seal structure is arranged between the outer edge of the annular base and the convex ring so as to prevent cutting fluid and foreign matters from entering the polarization-preventing positioning mechanism.
9. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret is characterized in that a rotary driving module for driving the tool turret module to rotate is further arranged on the supporting frame, an avoidance opening for avoiding an output rotating shaft of the rotary driving module is arranged on the supporting frame, and the avoidance opening is located in the range surrounded by the convex ring.
10. The polarization-preventing positioning mechanism for the tail end of the composite turning and milling lifting tool turret according to claim 1, further comprising a mounting base, wherein a lifting assembly for driving the support frame to move along a Z axis is arranged on the mounting base.

Description

Terminal polarization-preventing positioning mechanism of compound turning milling lifting turret Technical Field The invention relates to the technical field of numerical control machine tools, in particular to a polarization-preventing positioning mechanism for the tail end of a composite turning and milling lifting tool turret. Background In the field of numerical control machine tool manufacturing, the composite turning and milling machining center is widely applied to one-time clamping forming machining of complex parts by virtue of the advantages of high integration level and high efficiency. The tool turret is used as a core functional component and is used for bearing the mounting, tool selecting, positioning and cutting tasks of a tool, and the positioning precision and the vibration resistance of the tool turret directly determine the machining precision and the surface quality of the whole machine. The existing cutter tower positioning mechanism generally adopts structures such as an end fluted disc, a mouse tooth disc or an index plate. In conventional designs, such positioning mechanisms are mostly located at the root of the turret, i.e. where the turret housing is connected to the saddle or close to the drive shaft, limited by the space in which the drive elements (e.g. electric, hydraulic motors) are arranged. However, in the actual cutting process, especially when facing heavy cutting or intermittent cutting conditions, the turret is equivalent to a cantilever structure, and the longer the cutting force acts on the tip, the farther from the root support point (i.e., the end of the turret), the longer the arm, and the greater the bending moment and torque generated. Under heavy load, the slight elastic deformation of the turret end is amplified, resulting in significant polarization of the tip. The quality of the machined surface is seriously affected, the abrasion of the cutter is accelerated, and the precision retention of the machine tool under the strong cutting working condition is further limited. Disclosure of Invention The invention aims to solve the technical problem of providing a polarization-preventing positioning mechanism at the tail end of a composite turning and milling lifting tool turret, aiming at the defects in the prior art. The technical scheme adopted for solving the technical problems is as follows: The invention provides a polarization-preventing positioning mechanism at the tail end of a composite turning and milling lifting tool turret, which comprises a support frame and a tool turret module, wherein the outer side surface of the support frame is provided with a convex ring which protrudes outwards; Wherein, prevent polarization location module includes: the end face fluted disc group comprises a fixed fluted disc and a movable fluted disc which are oppositely arranged and used for realizing indexing locking of the turret, wherein the fixed fluted disc is fixed on the end face of the convex ring, and the movable fluted disc is axially and movably arranged on the annular base; the floating sleeve is axially and reciprocally movably arranged at the periphery of the convex ring, and the front end surface of the floating sleeve is abutted with the movable fluted disc; and the driving control assembly is used for driving the floating sleeve to axially move forwards or backwards so as to control the engagement or separation of the fixed fluted disc and the movable fluted disc. The invention discloses a polarization-preventing positioning mechanism at the tail end of a composite turning and milling lifting tool turret, wherein a driving control assembly comprises a plurality of inertial vibrators and a telescopic control module, the inertial vibrators are arranged on a supporting frame in a swinging mode, each inertial vibrator is provided with a contact at the first end facing to a floating sleeve and is used for being matched with a cam profile surface at the periphery of the floating sleeve, and the telescopic control module is used for controlling the second end of each inertial vibrator to swing forwards or backwards so as to drive the floating sleeve to axially move. The invention relates to a polarization-preventing positioning mechanism at the tail end of a composite turning and milling lifting tool turret, wherein the cam profile surface is a wavy profile surface, the pressure angle at the wave trough of the cam profile surface is smaller than the friction angle to form a self-locking section, and the pressure angle at the wave crest of the cam profile surface is larger than the friction angle to form a non-self-locking section; When the contact enters the non-self-locking section under the driving of the telescopic control module, the floating sleeve is allowed to axially move so as to release the meshing of the fixed fluted disc and the movable fluted disc. The invention discloses a polarization-preventing positioning mechanism at the tail end of a composite tu