CN219335996U - Heavy-load rotary supporting mechanism of inverted vertical lathe and mounting seat thereof - Google Patents

Abstract

The utility model relates to a device for auxiliary positioning of a numerical control machine tool, in particular to a heavy-load rotary supporting mechanism of an inverted vertical lathe and an installation seat thereof. The utility model provides a heavy load rotary support mechanism of vertical lathe, includes the casing, installs rotatable top in the casing, and top installs in the dabber, and both ends all carry out swing joint through angular contact bearing about between dabber and the casing, and the upper end cover compresses tightly behind the angular contact bearing top on upper portion with casing fixed connection, the tail end of casing has the lower extreme cover through bolt fixed connection. The heavy-load rotary supporting mechanism of the inverted vertical lathe adopts front-back precise angular contact ball bearing configuration, and the front-end bearing bears axial force and radial force respectively, so that high-rotating-speed operation of the center can be realized, the bearing capacity is very high, and the high-rotating-speed and high-bearing performance of the inverted vertical lathe can be completely met.

Description

Heavy-load rotary supporting mechanism of inverted vertical lathe and mounting seat thereof

Technical Field

The utility model relates to a device for auxiliary positioning of a numerical control machine tool, in particular to a heavy-load rotary supporting mechanism of an inverted vertical lathe and an installation seat thereof.

Background

The high-speed numerical control machine tool is one of the technical foundation and development direction of equipment manufacturing industry, and is a strategic industry of the equipment manufacturing industry. The main shaft and the cutter towers are intensively arranged on the lathe bed, so that the whole occupied area of the lathe bed is small, the main shaft is reversely arranged on the upper part of the lathe bed, the live center is arranged on the lower part of the lathe bed, the parts are clamped by the main shaft coupling chuck on the upper part through the center supporting parts and driven to rotate, the cutter towers are respectively arranged on two sides of the main shaft, the cutter towers are provided with a plurality of turning tools and power milling heads, the turning and milling of the main shaft can be simultaneously realized, and the parts are vertically arranged, so that the chip removal is very convenient. The center is needed to support most of the weight of the part at the lower part, so that very high requirements are placed on the structure and the bearing performance of the center.

Most of the existing apexes are dead apexes, the apexes supporting the rotating parts do not rotate in the machining process, the apexes are required to have high hardness and high cost, and in this state, the apexes are worn to cause wear precision deviation on the center holes of the machined parts.

Most of the centers are horizontally installed and are not designed according to too high weighing, and the horizontally installed seal is used on a vertical lathe, so that water and dust are easily caused to enter, and the service life of the centers is too short.

In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create a heavy-duty rotary support mechanism and its mounting base for an inverted vertical lathe, so as to make the heavy-duty rotary support mechanism have industrial utility value.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a heavy-load rotary supporting mechanism of an inverted vertical lathe and an installation seat thereof.

The utility model relates to a heavy-load rotary supporting mechanism of an inverted vertical lathe, which comprises a shell, wherein a rotatable center is arranged in the shell, the center is arranged in a mandrel, the upper end and the lower end of the mandrel are movably connected with the shell through angular contact bearings, an upper end cover is fixedly connected with the shell after being pressed above the angular contact bearings at the upper part, and a lower end cover fixedly connected with the tail end of the shell through bolts is arranged at the tail end of the shell.

The heavy-load rotary supporting mechanism of the inverted vertical lathe provides a rotatable mechanism for the center, so that the center can rotate by relying on the angular contact bearing which is matched and installed, the center can rotate along with a workpiece in working, friction between the center and the workpiece is avoided, abrasion of the center is avoided, the strength requirement on the center is lowered, and the production cost is reduced.

Further, the upper side angular contact bearings are four groups, the lower side angular contact bearings are two groups, and an inner spacer ring is contacted between the upper group of angular contact bearings and the lower group of angular contact bearings.

The front end bearings of the upper and lower angular contact bearings respectively bear axial force and radial force, so that high-rotation-speed operation of the center can be realized, the bearing capacity is very high, the high-rotation-speed and high-bearing performance of the inverted vehicle can be completely met, and the inner spacer plays a supporting and limiting role on the upper end bearings.

Furthermore, the front three angular contact bearings at the upper side are connected in series in the same direction and angle, the third and fourth angular contact bearings are connected back to back, and the angular contact bearings at the lower side are connected back to back.

The front end bearing bears axial force and radial force respectively, so that high-rotation-speed running of the tip can be realized, the bearing capacity is very high, the high-rotation-speed high-bearing performance of an inverted vehicle can be completely met, the state of releasing the rear end bearing outer ring can be completely met, the mandrel of the tip can be heated to stretch backwards in the machining process, and the precision stability of the tip of the front end supporting part in the temperature rising state can be ensured.

Further, a mounting groove with a wide upper part and a narrow lower part is arranged in the mandrel, the appearance of the center is consistent with that of the mounting groove, and the center is clamped into the mounting groove.

The mandrel is matched with the center structure, so that the center is convenient to place.

Further, the upper end of the mandrel is outwards expanded to be presented as a check ring, the check ring is downwards protruded, the protrusion is matched with a groove on the inner side of the upper end cover, and the check ring is tightly pressed on the upper end cover.

The retainer ring compresses tightly on the upper end cover, compresses tightly upside angle contact bearing through the upper end cover, improves mounting structure stability.

Further, the sealing cover is fixed on the retainer ring of the mandrel through bolts.

The sealing cover prevents the scraps from entering the mandrel, and improves the tightness of the whole device.

The utility model provides a mount pad for fixing heavy load rotary support mechanism of vertical lathe, includes the fixing base that has the indent hole, and one side of fixing base has the fixed plate of outwards extending, and the upper end of casing has the solid fixed ring of outwards expanding, and the upper end of fixing base has a plurality of screw, has the through-hole that corresponds with the screw on solid fixed ring, installs solid fixed ring on the fixing base through the bolt.

The mounting seat provides a mounting structure for the heavy-load rotary supporting mechanism of the inverted vertical lathe, so that the heavy-load rotary supporting mechanism of the inverted vertical lathe is convenient to fixedly mount, the structure is stable after mounting, and the operation is convenient for subsequent maintenance and disassembly.

By means of the scheme, the utility model has at least the following advantages: the heavy-load rotary supporting mechanism of the inverted vertical lathe adopts front-back precise angular contact ball bearing configuration, and the front-end bearing bears axial force and radial force respectively, so that high-rotating-speed operation of the center can be realized, the bearing capacity is very high, and the high-rotating-speed and high-bearing performance of the inverted vertical lathe can be completely met. The front end umbrella-shaped sealing ring is ingenious in design, so that the cutting fluid above can be prevented from entering the inside of the center, and even if part of the cutting fluid enters the inner hole of the mandrel through the taper hole surface, the cutting fluid can also flow out of the center part through the hole of the rear end sealing cover. It is very convenient to mount and dismount the active tip, or the whole tip assembly. The center is simple in structure, high in rigidity, low in cost and convenient to replace and maintain.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate a certain embodiment of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a heavy duty rotary support mechanism of the inverted vertical lathe of the present utility model;

FIG. 2 is an enlarged partial schematic view of FIG. 1 of the present utility model;

FIG. 3 is a schematic view of the structure of the mounting base of the present utility model;

FIG. 4 is a state diagram of the assembled utility model;

in the figure, 1, a shell, 2, a center, 3, a mandrel, 4, an upper end cover, 5, a lower end cover, 6, an inner space ring, 7, a retainer ring, 8, a sealing cover, 9, a fixing seat, 10, a fixing plate, 11 and a fixing ring.

Description of the embodiments

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

Referring to fig. 1, a concave groove is formed in a mandrel 3, so that a center 2 is conveniently clamped in, the mandrel 3 is movably connected with a shell 1 through an upper angular contact bearing and a lower angular contact bearing, the mandrel 3 is conveniently rotated, the center 2 is contacted with a shaft-shaped workpiece to be processed, the workpiece can drive the center 2 and the mandrel 3 for installing the center 2 to rotate when rotating at a high speed, the end part of the center 2 is in a relatively fixed state with the bottom of the workpiece, the occurrence of the condition of rotary abrasion is avoided, the center 2 with relatively low strength can be adopted, and the production cost of the center 2 is effectively reduced.

The inner spacer ring 6 plays a supporting role, the upper end of the inner spacer ring is contacted with the angular contact bearing on the upper side, the lower end of the inner spacer ring is contacted with the angular contact bearing on the lower side, meanwhile, the number and the installation mode of the angular contact bearings on the upper side and the lower side are different, the front three angular contact bearings on the upper side are in a serial state, the third angular contact bearing and the fourth angular contact bearing are connected back to back and are rigidly pre-tightened, the front three angular contact bearings bear axial force brought by parts together, the fourth angular contact bearing bears reverse axial force, the bearing at the first junction on the upper side is positioned with the shaft shoulder of the mandrel 3, and the angular contact bearings on the lower side are connected back to back and are connected with the inner spacer ring 6.

Referring to fig. 1, the mounting groove on the inner side of the mandrel 3 with a conical structure is convenient for the center 2 to be clamped and mounted, meanwhile, the center of the mandrel 3 is of a whole penetrating structure, and holes for chip removal and cutting fluid are formed, so that when the center 2 is replaced, waste is conveniently discharged.

Referring to fig. 2, a retainer ring 7 of an outer ring at the upper end of the mandrel 3 is used for pressing an upper end cover 4, the upper end cover 4 is pressed on an angular contact bearing at the upper side, pressing fixation of an upper structure is achieved, the lower side of the retainer ring 7 is protruded for facilitating contact stability between the retainer ring 7 and the upper end cover 4, and the retainer ring is matched with a groove on the upper end cover 4, so that fixation positioning is completed.

The sealing cover 8 is in an umbrella-shaped structure, so that scraps can slide from two sides during processing, and meanwhile, the sealing cover 8 also protects the center 2 and the mandrel 3, so that the working state of the center 2 is prevented from being damaged due to the fact that the scraps and cutting fluid enter.

Referring to fig. 3 and 4, a mounting seat is provided for the heavy-load rotary supporting mechanism of the whole inverted vertical lathe, a hole in the middle of the mounting seat is used for clamping in the supporting mechanism, as a result, the supporting mechanism is fixed on the fixing seat 9 through a fixing ring 11 and a bolt structure on the outer side of the shell 1 of the supporting mechanism, the installation is completed, and a fixing plate 10 at the rear end of the fixing seat 9 is convenient for fixedly mounting the whole device on a lathe, and the operation is convenient.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (7)

1. The utility model provides a heavy load rotary support mechanism of vertical lathe, includes casing (1), its characterized in that: install rotatable top (2) in casing (1), top (2) are installed in dabber (3), and upper and lower both ends all carry out swing joint through angular contact bearing between dabber (3) and casing (1), upper end cover (4) compress tightly behind the angular contact bearing top on upper portion with casing (1) fixed connection, the tail end of casing (1) has lower end cover (5) through bolt fixed connection.

2. The heavy-duty rotary support mechanism of an inverted vertical lathe according to claim 1, wherein: the upper side angular contact bearings are four groups, the lower side angular contact bearings are two groups, and an inner spacer ring (6) is contacted between the upper group of angular contact bearings and the lower group of angular contact bearings.

3. The heavy-duty rotary support mechanism of an inverted vertical lathe according to claim 2, wherein: the front three angular contact bearings at the upper side are connected in series at the same direction angle, the third and fourth angular contact bearings are connected back to back, and the angular contact bearings at the lower side are connected back to back.

4. A heavy duty rotary support mechanism for an inverted vertical lathe according to claim 3, wherein: the mandrel (3) is internally provided with a mounting groove with a wide upper part and a narrow lower part, the appearance of the center (2) is consistent with that of the mounting groove, and the center (2) is clamped into the mounting groove.

5. The heavy-duty rotary support mechanism of an inverted vertical lathe according to claim 4, wherein: the upper end of the mandrel (3) is outwards expanded to form a check ring (7), the check ring (7) protrudes downwards, the protrusion is matched with a groove on the inner side of the upper end cover (4), and the check ring (7) is tightly pressed on the upper end cover (4).

6. The heavy-duty rotary support mechanism of an inverted vertical lathe according to claim 5, wherein: the sealing cover (8) is fixed on the check ring (7) of the mandrel (3) through bolts.

7. A mounting for securing a heavy duty rotary support mechanism for an inverted vertical lathe according to any one of claims 1 to 6, characterised in that: the fixing seat (9) with the concave holes is included, a fixing plate (10) extending outwards is arranged on one side of the fixing seat (9), a fixing ring (11) extending outwards is arranged at the upper end of the shell (1), a plurality of screw holes are formed in the upper end of the fixing seat (9), through holes corresponding to the screw holes are formed in the fixing ring (11), and the fixing ring (11) is installed on the fixing seat (9) through bolts.

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