CN216938440U

CN216938440U - Vertical longmen is direct-connecting head assembly for machining center

Info

Publication number: CN216938440U
Application number: CN202220570119.2U
Authority: CN
Inventors: 施允盛
Original assignee: SUZHOU GAMMA AUTOMATION TECHNOLOGY CO LTD
Current assignee: SUZHOU GAMMA AUTOMATION TECHNOLOGY CO LTD
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-12
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a direct-type machine head assembly for a vertical gantry machining center, which comprises a main shaft box and a direct-type main shaft fixed in the main shaft box, wherein the main shaft comprises a servo motor, a coupler arranged at the lower end of the servo motor and a main shaft assembly arranged at the lower end of the coupler; the step platform is arranged in the outer sleeve, and the first bearing, the second bearing and the third bearing are sequentially arranged in the outer sleeve from front to back; the first bearing and the second bearing are arranged on the step platform; a positioning inner bolt is arranged between the second bearing and the third bearing; an internal thread corresponding to the positioning internal bolt is arranged in the outer sleeve; the tail end of the outer sleeve is provided with a rear end cover; the end cover tightly supports the third bearing.

Description

Vertical longmen is direct-connecting head assembly for machining center

Technical Field

The utility model relates to the field of numerical control machining centers, in particular to a direct-connection type machine head assembly for a vertical gantry machining center.

Background

The direct-coupled spindle is directly connected with the transmission motor through the coupler, has higher rotating speed and higher working efficiency, but has the problem of inconvenient disassembly and maintenance.

At present, the direct-type main shaft is connected with a mechanical shell through a fixing device provided with a bearing, when the direct-type main shaft is overhauled, the shell and the fixing device need to be detached, the whole process is very complicated, oil sludge is accumulated in equipment used in a severe environment, regular cleaning is needed, and the direct-type main shaft is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct-connection type machine head assembly for a vertical gantry machining center, aiming at overcoming the defects in the prior art and solving the problem that the conventional direct-connection type main shaft and fixing device are inconvenient to use.

The technical scheme adopted by the utility model for realizing the purpose is as follows:

a direct-connection type machine head assembly for a vertical gantry machining center comprises a main shaft box and a direct type main shaft fixed inside the main shaft box, wherein the direct-connection type main shaft comprises a servo motor, a coupler arranged at the lower end of the servo motor and a main shaft assembly arranged at the lower end of the coupler; the step platform is arranged in the outer sleeve, and the first bearing, the second bearing and the third bearing are sequentially arranged in the outer sleeve from front to back; the first bearing and the second bearing are arranged on the step platform; a positioning inner bolt is arranged between the second bearing and the third bearing; an internal thread corresponding to the positioning internal bolt is arranged in the outer sleeve; the tail end of the outer sleeve is provided with a rear end cover; and the rear end cover tightly supports the third bearing.

After the outer sleeve is installed, the front end of the outer sleeve is located outside the mechanical shell, and a connecting portion used for dismounting is arranged.

The rear end cover is fixed on the outer sleeve through bolts or screwed on the outer sleeve through threads.

The bearing is equipped with more than three groups, and the structure between third bearing and the fourth bearing is the same with the structure between second bearing and the third bearing.

The spindle box is provided with a plurality of windows, a plurality of reinforcing ribs are arranged on the inner wall of the spindle box, a sliding rail is arranged at the rear end of the spindle box, a sliding block is arranged on the sliding rail, and the spindle box moves up and down through the matching of the sliding rail and the sliding block.

The window that is located headstock upper portion is circular structure, and the vertical setting of equidistant, and the window that is located headstock lower part is square structure, and equidistant vertical setting.

The lower end of the spindle box is provided with a spindle fixing sleeve, the lower end of the mechanical shell is provided with a fixing disc, the mechanical shell is fixed on the spindle box through the fixing disc, and the spindle is fixed on the fixing disc through a spindle fixing part arranged at the lower part of the spindle.

The lower end of the servo motor is provided with a motor mounting seat, and the upper end of the main shaft is provided with an induction switch bracket and an induction block matched with the induction switch bracket.

The utility model has the beneficial effects that: can take out whole overcoat through twisting connecting portion to easily change and clearance, effectually solved and used inconvenient technical problem among the prior art. In addition, a main shaft fixing sleeve is arranged at the lower end of the main shaft box, and the main shaft is fixed in the main shaft fixing sleeve, so that the main shaft can be better fixed, the main shaft can stably run, and vibration is reduced.

In addition, the window on the main spindle box is designed to be of a round structure at the upper part and a square structure at the lower part, so that the heat dissipation is increased, the stress bearing capacity of the main spindle box is enhanced, the weight of the main spindle box is reduced, the vibration of the main spindle is further reduced, and the operation efficiency of the main spindle is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of the direct-coupled spindle of the present invention;

FIG. 4 is a cross-sectional view of the spindle assembly;

fig. 5 is a schematic view of another rear end cap structure of the spindle assembly of the present invention.

In the figure: 1. spindle 2, outer sleeve 3, rear end cover 4, internal thread 5, positioning internal bolt

6. Step platform 7, external thread 8, connecting part 9, third bearing 10 and second bearing

11. First bearing 12, main spindle box 13, direct type main spindle 14 and servo motor

15. Coupler 16, mechanical shell 17, window 18, reinforcing rib 19 and slide rail

20. Slide block 21, main shaft fixing sleeve 22, fixing disc 23 and main shaft fixing part

24. Motor mounting seat 25, inductive switch bracket 26 and inductive block

Detailed Description

Example 1: referring to fig. 1 to 5, the embodiment provides a direct-type machine head assembly for a vertical gantry machining center, which includes a main spindle box 12 and a direct-type spindle 13 fixed inside the main spindle box 12, where the direct-type spindle 13 includes a servo motor 14, a coupler 15 disposed at a lower end of the servo motor 14, and a spindle assembly disposed at a lower end of the coupler 15, an upper end of the coupler 15 is connected to a power output shaft of the servo motor 14, a lower end of the coupler 15 is connected to a drive shaft of the spindle assembly, the spindle assembly includes a mechanical housing 16, a spindle 1 and an outer sleeve 2, the spindle 1 is rotatably sleeved with the outer sleeve 2 through a bearing, and an external thread 7 connected with the mechanical housing 16 is disposed outside the outer sleeve 2; the step platform 6 is arranged in the outer sleeve 2, and the first bearing 11, the second bearing 10 and the third bearing 9 are sequentially arranged in the outer sleeve 2 from front to back; the first bearing 11 and the second bearing 10 are arranged on the stair platform; a positioning inner bolt 5 is arranged between the second bearing 10 and the third bearing 9; an internal thread 4 corresponding to the positioning internal bolt 5 is arranged in the outer sleeve 2; the tail end of the outer sleeve 2 is provided with a rear end cover 3; the rear end cover 3 tightly supports the third bearing 9.

After the outer sleeve 2 is installed, the front end of the outer sleeve is positioned outside the mechanical shell, and a connecting part 8 for dismounting is arranged. The connecting part 8 adopts an outer hexagon, and after screwing, the outer sleeve 2 is taken out through the rotation of the external thread 7.

The outer ring of the positioning inner bolt 5 is provided with threads and is screwed with the internal threads 4 in the outer sleeve 2, and the inner ring of the positioning inner bolt 5 adopts an inner hexagon.

The first bearing 11 is smaller in size than the second bearing 10 and the third bearing 9, and is convenient to mount on the step platform 6.

The rear end cover 3 is fixed on the outer sleeve through bolts or screwed on the outer sleeve 2 through threads.

The spindle box 12 is provided with a plurality of windows 17, the inner wall of the spindle box 12 is provided with a plurality of reinforcing ribs 18, the rear end of the spindle box 12 is provided with a slide rail 19 and a slide block 20 arranged on the slide rail 19, and the spindle box 12 moves up and down through the matching of the slide rail 19 and the slide block 20.

The window 17 located on the upper portion of the spindle box 12 is of a circular structure and is vertically arranged at equal intervals, and the window 17 located on the lower portion of the spindle box 12 is of a square structure and is vertically arranged at equal intervals.

A spindle fixing sleeve 21 is disposed at the lower end of the spindle box 12, a fixing plate 22 is disposed at the lower end of the mechanical housing 16, the mechanical housing 16 is fixed to the spindle box 12 through the fixing plate 22, and the spindle 1 is fixed to the fixing plate 22 through a spindle fixing portion 23 disposed at the lower portion of the spindle 1.

A motor mounting seat 24 is arranged at the lower end of the servo motor 14, and an induction switch bracket 25 and an induction block 26 matched with the induction switch bracket 25 are arranged at the upper end of the main shaft 1.

The spindle fixing part 23 is connected with the rear end cover 3 through threads.

The main shaft fixing part 23 and the rear end cover 3 are of an integrally formed structure. Is connected with the shell 2 through a rear end cover 3 in a threaded mode.

Example 2: the embodiment provides a direct-connection type machine head assembly for a vertical gantry machining center, which has a structure basically the same as that of the embodiment 1, and the difference is that:

the bearing is provided with more than three groups, and the structure between the third bearing 9 and the fourth bearing is the same as the structure between the second bearing 10 and the third bearing 9.

The main shaft assembly installation process comprises the following steps:

1. the rear end of the main shaft is connected with a transmission motor through a coupler;

2. the first bearing is arranged on the step platform at the foremost end in the outer sleeve;

3. a step platform for mounting the second bearing in the middle of the inner part of the outer sleeve;

4. screwing down the positioning inner bolt;

5. mounting a third bearing;

6. mounting and fixing the rear end cover;

7. and sleeving the installed outer sleeve on the main shaft and screwing the outer sleeve through the connecting part.

The disassembly sequence is reversed.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the technical scheme of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A direct-connection type machine head assembly for a vertical gantry machining center comprises a main shaft box and a direct-connection type main shaft fixed in the main shaft box, and is characterized in that the direct-connection type main shaft comprises a servo motor, a coupler arranged at the lower end of the servo motor and a main shaft assembly arranged at the lower end of the coupler, the upper end of the coupler is connected with a power output shaft of the servo motor, the lower end of the coupler is connected with a main shaft assembly driving shaft, the main shaft assembly comprises a mechanical shell, a main shaft and an outer sleeve, the main shaft is rotatably sleeved with the outer sleeve through a bearing, and an external thread connected with the mechanical shell is arranged outside the outer sleeve; the step platform is arranged in the outer sleeve, and the first bearing, the second bearing and the third bearing are sequentially arranged in the outer sleeve from front to back; the first bearing and the second bearing are arranged on the step platform; a positioning inner bolt is arranged between the second bearing and the third bearing; an internal thread corresponding to the positioning internal bolt is arranged in the outer sleeve; the tail end of the outer sleeve is provided with a rear end cover; and the rear end cover tightly supports the third bearing.

2. A vertical gantry machining center straight nose assembly as claimed in claim 1, wherein the front end of the outer sleeve is located outside the machine housing after installation and is provided with a connection part for disassembly.

3. The vertical gantry machining center straight nose assembly of claim 1, wherein the rear end cap is bolted to the housing or screwed to the housing.

4. The vertical gantry machining center straight-joint head assembly of claim 1, wherein the bearings are provided in more than three sets, and a structure between the third bearing and the fourth bearing is the same as a structure between the second bearing and the third bearing.

5. The vertical gantry machining center direct head assembly as claimed in claim 1, wherein the main spindle box is provided with a plurality of windows, a plurality of ribs are provided on an inner wall of the main spindle box, a slide rail is provided at a rear end of the main spindle box, and a slide block is provided on the slide rail, and the main spindle box moves up and down by cooperation of the slide rail and the slide block.

6. The vertical gantry machining center direct head assembly of claim 5, wherein the window at the upper portion of the main spindle box is of a circular structure and is vertically disposed at equal intervals, and the window at the lower portion of the main spindle box is of a square structure and is vertically disposed at equal intervals.

7. The vertical gantry machining center direct head assembly as claimed in claim 5, wherein a spindle fixing sleeve is provided at a lower end of the spindle box, a fixing plate is provided at a lower end of the machine housing, the machine housing is fixed to the spindle box by the fixing plate, and the spindle is fixed to the fixing plate by a spindle fixing portion provided at a lower portion of the spindle.

8. The direct-coupled head assembly for a vertical gantry machining center according to claim 5, wherein a motor mounting seat is provided at a lower end of the servo motor, and an inductive switch bracket and an inductive block engaged with the inductive switch bracket are provided at an upper end of the main shaft.