CN212496669U

CN212496669U - Screw rod transmission tailstock of numerical control machine tool

Info

Publication number: CN212496669U
Application number: CN202021249060.4U
Authority: CN
Inventors: 李光阳
Original assignee: Daqiao Machinery Jiangsu Co ltd
Current assignee: Daqiao Machinery Jiangsu Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-02-09
Anticipated expiration: 2030-07-01

Abstract

The utility model relates to a numerically-controlled machine tool lead screw transmission tailstock, including base and the locating piece of mirror image setting in the base left and right sides, the front end center of base is provided with the connecting hole, and the rear end center is provided with the dead eye that communicates with the connecting hole, is provided with the bearing in the dead eye, the base end is provided with the inner circle stop collar and the outer lane stop collar of restricting bearing inner circle and outer lane, form the clearance between inner circle stop collar and the outer lane stop collar, the sealing washer has been cup jointed in this clearance, inner circle stop collar, sealing washer and outer lane stop collar are spacing fixed through the guard shield of fixing at the base rear end; the front end of base is provided with the crash pad, and the center of crash pad is provided with the linkage hole, and linkage hole bottom is provided with the socket. The design of this kind of digit control machine tool lead screw transmission tailstock crash pad has improved holistic factor of safety, and the design of sealing washer and guard shield can prevent that fluid and metal dust from getting into its inside damage bearing, has improved the life of bearing, has improved stability.

Description

Screw rod transmission tailstock of numerical control machine tool

Technical Field

The utility model relates to a digit control machine tool field especially relates to a digit control machine tool screw drive tailstock.

Background

The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool provided with a program control system. The basic components of the numerical control machine tool comprise a processing program carrier, a numerical control device, a servo driving device, a machine tool main body and other auxiliary devices. The machine tool host is a main body of the numerical control machine tool and comprises machine parts such as a machine tool body, a base, a stand column, a cross beam, a sliding seat, a workbench, a spindle box, a feeding mechanism, a tool rest, an automatic tool changer and the like; it is a mechanical part for automatically finishing various cutting processes on a numerical control machine tool; the feeding mechanism is used as an important transmission device of the workbench and mainly comprises a lead screw, the head of the lead screw is in transmission connection with a spindle box, and the tail end of the lead screw is arranged on a machine body through a lead screw transmission tail seat.

The existing machine tool lead screw transmission tailstock has a single structure and mainly comprises a bearing connected with the tail end of a lead screw and a bearing seat used for fixing the bearing, wherein the bearing seat is fixedly arranged on a machine tool body; because the digit control machine tool can produce metal powder when using, needs the cutting fluid to cool off the cutter simultaneously, consequently, digit control machine tool in the course of the work can hardly have metal dust and cutting fluid and get into the clearance of bearing frame and bearing, causes corruption and wearing and tearing to the bearing, and the operation is unstable, and has reduced the life of bearing, and the bolt that is used for fixing on the bearing frame its and lathe bed if receive the easy rust change of erosion of cutting fluid, dismantles and changes the comparison difficulty.

Disclosure of Invention

The utility model aims to solve the technical problem that a numerical control machine tool lead screw transmission tailstock that factor of safety is high, and sealed and stable good and easy to assemble and dismantle is provided.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a screw rod transmission tailstock of a numerical control machine tool comprises a base, wherein positioning blocks of a rectangular structure are arranged on the left side and the right side of the base in a mirror image mode, positioning holes communicated with the bottom surface are formed in the top surface of each positioning block, a connecting hole convenient for a screw rod to penetrate through is formed in the center of the front end of the base, a bearing hole communicated with and concentric with the connecting hole is formed in the center of the rear end of the base, the diameter of the bearing hole is larger than that of the connecting hole, a bearing matched with the bearing hole in an embedded mode is arranged in the bearing hole, the tail end of the screw rod penetrates through the connecting hole and is matched with a shaft hole in the center of the bearing in an inserting mode, an inner ring limiting sleeve used for limiting an inner ring of the bearing and an outer ring limiting sleeve used for limiting an outer ring of the bearing are arranged, the inner ring limiting sleeve, the sealing ring and the outer ring limiting sleeve which are mutually overlapped and sleeved are limited and fixed through a protective cover fixedly arranged at the rear end of the base; the front end of base is provided with the crash pad of being made by the plastic, the terminal surface center of crash pad is provided with the circular linkage hole that the diameter is greater than the lead screw external diameter, the bottom in linkage hole is provided with the socket with crash pad bottom outside intercommunication.

Preferably, the crash pad, the protective cover and the base are fixedly connected together through countersunk bolts, and fixing holes used for connecting the countersunk bolts on the crash pad are countersunk holes.

Preferably, an oil filling opening is formed in the top of the positioning block, an oil duct communicated with the positioning hole is formed in the positioning block, and the oil duct is communicated with the oil filling opening.

Preferably, an annular sealing gasket is arranged between the crash pad and the base.

Preferably, the base and the positioning block are integrally cast.

Preferably, the positioning block is provided with at least two positioning holes, and the positioning holes are counter-sunk holes.

Preferably, the bottom surface of the base is a horizontal surface.

Compared with the prior art, the utility model discloses an useful part is: the design of this kind of digit control machine tool lead screw transmission tailstock crash pad has improved holistic factor of safety, and the design of base inner seal circle and guard shield can prevent that fluid and metal dust from getting into its inside damage bearing, has improved the life of bearing, has improved stability.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of the external three-dimensional structure of the screw rod transmission tailstock of the numerical control machine tool of the utility model;

FIG. 2 is a schematic view of the tail structure of the screw drive tailstock of the numerical control machine tool of the present invention;

FIG. 3 is a schematic view of the top structure of the screw drive tailstock of the numerical control machine tool according to the present invention;

FIG. 4 is a cross-sectional view of the structure A-A of FIG. 3;

fig. 5 is a structural sectional view of B-B in fig. 3.

In the figure: 1. a base; 11. connecting holes; 12. a bearing bore; 13. a bearing; 2. positioning blocks; 21. positioning holes; 22. an oil filling port; 23. an oil passage; 3. an anti-collision pad; 31. a socket; 4. a shield; 5. a countersunk bolt; 6. an engagement hole; 7. an inner ring limiting sleeve; 8. a seal ring; 9. and an outer ring limiting sleeve.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:

fig. 1 to 4 show a numerically-controlled machine tool screw transmission tailstock, which comprises a base 1, wherein positioning blocks 2 with rectangular structures are arranged on the left side and the right side of the base 1 in a mirror image manner, and the base 1 and the positioning blocks 2 are integrally cast and molded, so that the manufacturing is simple; the top surface of the locating block 2 is provided with a locating hole 21 communicated with the bottom surface, the center of the front end of the base 1 is provided with a connecting hole 11 convenient for a screw rod to penetrate through, the center of the rear end is provided with a bearing hole 12 communicated with the connecting hole 11 and concentric with the connecting hole, the diameter of the bearing hole 12 is larger than that of the connecting hole 11, a bearing 13 matched with the bearing hole in an embedded mode is arranged in the bearing hole 12, the tail end of the screw rod penetrates through the connecting hole 11 and is matched with a shaft hole in the center of the bearing 13 in an inserting mode, the tail end of the base 1 is provided with an inner ring limiting sleeve 7 used for limiting an inner ring of the bearing 13 and an outer ring limiting sleeve 9 used for limiting an outer ring of the bearing 13, the outer ring limiting sleeve 9 is sleeved outside the inner ring limiting sleeve 7, a gap is formed between the inner ring limiting, The sealing ring 8 and the outer ring limiting sleeve 9 are limited and fixed through a protective cover 4 fixedly arranged at the rear end of the base 1; the front end of base 1 is provided with the crash pad 3 of being made by the plastic, the terminal surface center of crash pad 3 is provided with the circular interlock hole 6 that the diameter is greater than the lead screw external diameter, the bottom of interlock hole 6 is provided with the socket 31 with 3 bottom outside intercommunications of crash pad.

In order to facilitate the installation and the disassembly of the crash pad 3 and the shield 4, the crash pad 3, the shield 4 and the base 1 are fixedly connected together through countersunk bolts 5; in order to prevent that the countersunk head bolt 5 connected to the anti-collision pad 3 is exposed outside the end face of the anti-collision pad and influence the action and safety of the anti-collision pad 3, the fixing hole for connecting the countersunk head bolt 5 on the anti-collision pad 3 is a countersunk hole.

As shown in fig. 5, in order to facilitate the bolts installed in the positioning holes 21 to be corroded and rusted by the splashed cutting fluid and to be difficult to detach, an oil filling port 22 is provided at the top of the positioning block 2, an oil passage 23 communicating with the positioning holes 21 is provided inside the positioning block 2, and the oil passage 23 communicates with the oil filling port 22.

In order to ensure the internal sealing performance of the base 1, an annular sealing gasket is arranged between the anti-collision pad 3 and the base 1.

In order to facilitate the installation of the tailstock and ensure the stability of the installation of the tailstock, the bottom surface of the base 1 is a horizontal plane, at least two positioning holes 21 are formed in the positioning block 2, and the positioning holes 21 are countersunk holes.

When the anti-collision device is used, the anti-collision pad 3 is fixed on the front end surface of the base 1 through the countersunk head bolt 5, so that the machine tool workbench can be prevented from being accidentally and rigidly collided with the base 1; then the tail end of the screw rod penetrates through a connecting hole 11 to be sleeved in a bearing 13, the tail part of the screw rod extends to the outer end of the bearing 13, an inner ring limiting sleeve 7 and an outer ring limiting sleeve 9 are sleeved outside the screw rod and are abutted against an outer ring and an inner ring of the bearing 13 respectively, a sealing ring 8 is sleeved in a gap formed between the inner ring limiting sleeve 7 and the outer ring limiting sleeve 9, then a protective cover 4 is covered at the tail end of the base 1, the front end face of the protective cover 4 abuts against the inner ring limiting sleeve 7, the sealing ring 8 and the outer ring limiting sleeve 9, the tail end of the screw rod is covered and protected by the protective cover 4, the arrangement of the inner ring limiting sleeve 7 and the outer ring limiting sleeve 9 can prevent the bearing 13 from moving for a long time to cause left and right dislocation, and the sealing ring 8 and the; and finally, assembling the screw rod connected with the base 1 on a machine tool, and connecting the positioning blocks 2 on the left side and the right side of the base 1 with the fixed holes at preset positions of the machine tool body through bolts to realize fixed positioning.

The design of this kind of digit control machine tool lead screw transmission tailstock crash pad has improved holistic factor of safety, and the design of base inner seal circle and guard shield can prevent that fluid and metal dust from getting into its inside damage bearing, has improved the life of bearing, has improved stability.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a digit control machine tool screw drive tailstock, includes base (1), base (1) left and right sides mirror image is provided with locating piece (2) of rectangle structure, and the top surface of locating piece (2) is provided with locating hole (21) with the bottom surface intercommunication, the front end center of base (1) is provided with connecting hole (11) that make things convenient for the lead screw to wear to establish, and the rear end center is provided with and communicates and endocentric dead eye (12) with connecting hole (11), the diameter of dead eye (12) is greater than the diameter of connecting hole (11), is provided with in dead eye (12) rather than embedded complex bearing (13), the lead screw end passes connecting hole (11) and pegs graft the cooperation with the shaft hole at bearing (13) center, its characterized in that: the end of the base (1) is provided with an inner ring limiting sleeve (7) used for limiting an inner ring of the bearing (13) and an outer ring limiting sleeve (9) used for limiting an outer ring of the bearing (13), the outer ring limiting sleeve (9) is sleeved outside the inner ring limiting sleeve (7), a gap is formed between the inner ring limiting sleeve (7) and the outer ring limiting sleeve (9), a sealing ring (8) matched with the gap is sleeved in the gap, and the inner ring limiting sleeve (7), the sealing ring (8) and the outer ring limiting sleeve (9) which are overlapped and sleeved together are limited and fixed through a protective cover (4) fixedly arranged at the rear end of the base (1); the front end of base (1) is provided with crashproof pad (3) of being made by the plastic, the terminal surface center of crashproof pad (3) is provided with circular interlock hole (6) that the diameter is greater than the lead screw external diameter, the bottom of interlock hole (6) is provided with socket (31) with crashproof pad (3) bottom outside intercommunication.

2. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: the anti-collision cushion (3) and the shield (4) are fixedly connected with the base (1) through the countersunk head bolts (5), and fixing holes used for being connected with the countersunk head bolts (5) on the anti-collision cushion (3) are countersunk holes.

3. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: the oil injection hole (22) is formed in the top of the positioning block (2), an oil duct (23) communicated with the positioning hole (21) is formed in the positioning block (2), and the oil duct (23) is communicated with the oil injection hole (22).

4. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: an annular sealing gasket is arranged between the anti-collision pad (3) and the base (1).

5. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: the base (1) and the positioning block (2) are integrally cast and formed.

6. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: the positioning block (2) is provided with at least two positioning holes (21), and the positioning holes (21) are countersunk holes.

7. The numerically controlled machine tool screw drive tailstock according to claim 1, characterized in that: the bottom surface of the base (1) is a horizontal plane.