CN212600261U

CN212600261U - Main shaft and front end cover assembly thereof

Info

Publication number: CN212600261U
Application number: CN202021151699.9U
Authority: CN
Inventors: 颜炳姜; 邝金田; 蔡丹
Original assignee: Huizhuan Machine Tool Co ltd
Current assignee: Huizhuan Machine Tool Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-26
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to a main shaft and front end housing assembly thereof, front end housing assembly include first front end housing and second front end housing, and the ring channel that extends to the front end face is seted up to the rear end face of first front end housing, has seted up two at least liquid holes on the diapire of ring channel, and the second front end housing encloses into a holding chamber with the ring channel jointly, has seted up the feed liquor hole on the second front end housing, and a ring channel correspondence has a feed liquor hole, and the feed liquor hole is linked together with the holding chamber. The during operation lets in the cutting fluid from the feed liquor hole, and the cutting fluid gets into the holding intracavity, then flows out in the play liquid hole on the diapire of ring channel again, because a ring channel corresponds a feed liquor hole and two at least liquid holes, consequently the cutting fluid flows out first front end housing after flowing out two at least ways from a feed liquor hole branch behind getting into the holding chamber, not only can realize carrying out refrigerated function to work piece and cutter, and the cutting fluid flows out after shunting moreover, can cool off work piece and cutter diversely, improves the cooling effect.

Description

Main shaft and front end cover assembly thereof

Technical Field

The utility model relates to a machine tool machining technical field especially relates to a main shaft and front end housing assembly thereof.

Background

The main shaft is one of the main parts on the machine tool, when the main shaft is machined, more heat can be generated between a cutter and a machined workpiece, if the heat is not timely removed, the cutter is accelerated in abrasion, even damaged and broken, and the machining precision is seriously influenced. The conventional main shaft is provided with a front end cover assembly which generally has simpler functions and does not have the function of cooling a workpiece and a cutter.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a spindle and a head cover assembly thereof that can achieve a function of cooling a workpiece and a tool.

A front end cap assembly for a spindle, comprising:

the middle of the first front end cover is provided with an axial first through hole, the rear end face of the first front end cover is provided with an annular groove extending towards the front end face, and the bottom wall of the annular groove is provided with at least two liquid outlet holes; and

the second front end cover is arranged behind the first front end cover, the second front end cover and the annular groove jointly enclose a containing cavity, an axial second through hole is formed in the middle of the second front end cover and communicated with the first through hole, a liquid inlet hole is formed in the second front end cover, the annular groove is correspondingly provided with the liquid inlet hole, and the liquid inlet hole is communicated with the containing cavity.

In one embodiment, the number of the annular grooves is two, and the two annular grooves are arranged in an axial symmetry manner with respect to a central axis of the first front end cover.

In one embodiment, two liquid outlet holes are formed in the bottom wall of one annular groove.

In one embodiment, the seal assembly further comprises an annular seal ring located between the first front end cap and the second front end cap.

In one embodiment, a universal joint is arranged in the liquid outlet hole.

In one embodiment, the portable electronic device further comprises a vent ring, the vent ring is arranged on the first front end cover and located in the first through hole, the second front end cover is provided with an air inlet hole, the first front end cover is provided with a vent channel, an air containing cavity is defined between the vent ring and the first front end cover, one end of the vent channel is communicated with the air inlet hole, the other end of the vent channel is communicated with the air containing cavity, the side wall of the vent ring is provided with an air outlet hole, and the air outlet hole is communicated with the air containing cavity.

In one embodiment, the inner side wall of the ventilation ring is provided with an annular groove, and one end of the air outlet is communicated with the annular groove.

In one embodiment, the first front end cover is provided with a first fixing hole, the second front end cover is provided with a second fixing hole, and the first front end cover and the second front end cover are fixedly connected through fasteners penetrating through the first fixing hole and the second fixing hole.

A main shaft comprises a main shaft seat and a front end cover assembly of the main shaft, wherein the second front end cover is fixed at the front end of the main shaft seat, and the first front end cover is fixed at the front end of the second front end cover.

In one embodiment, a cutting fluid channel is formed in the side wall of the spindle base, one end of the cutting fluid channel penetrates through the outer side wall of the spindle base, the other end of the cutting fluid channel penetrates through the front end face of the spindle base, and the cutting fluid channel is communicated with the fluid inlet hole.

The front end cover assembly of the main shaft at least has the following advantages:

during operation, let in the cutting fluid from the feed liquor hole, the cutting fluid gets into the holding intracavity that is enclosed by second front end housing and ring channel jointly, then flow out in the play liquid hole on the diapire of ring channel again, because a ring channel corresponds a feed liquor hole and two at least play liquid holes, consequently the cutting fluid flows out first front end housing after flowing out two at least ways from a feed liquor hole branch behind getting into the holding chamber, not only can realize carrying out refrigerated function to work piece and cutter, and the cutting fluid flows out after shunting moreover, can cool off work piece and cutter diversely, improve the cooling effect.

Drawings

FIG. 1 is a schematic structural view of a front end cap assembly of a spindle according to one embodiment;

FIG. 2 is a schematic structural view from another perspective of the front end cap assembly of the spindle shown in FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a top view of the front end cap assembly of the spindle shown in FIG. 1;

FIG. 5 is a plan sectional view taken along line A-A of FIG. 4;

fig. 6 is a perspective sectional view taken along line B-B in fig. 4.

In the drawings, 10, a front end cap assembly; 100. a first front end cap; 200. a second front end cap; 110. a first through hole; 120. an annular groove; 130. a liquid outlet hole; 210. a second through hole; 220. a liquid inlet hole; 300. a universal joint; 400. a seal member; 500. a venting ring; 230. an air inlet; 140. a vent passage; 600. an air containing cavity; 510. an air outlet; 520. a circular ring-shaped groove; 150. a first fixing hole; 240. a second fixing hole; 250. and a third fixing hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be noted that, the terms "front end" and "back end" as used herein refer to: the proximal machining end is the "front end" and the distal machining end is the "rear end" during machining, which are relative concepts and can therefore vary depending on the different positions in which they are located and the different conditions of use. These and other orientations, therefore, should not be used in a limiting sense.

The spindle in an embodiment comprises a spindle seat and a front end cover assembly (hereinafter referred to as a front end cover assembly) of the spindle, wherein the front end cover assembly is installed at the front end of the spindle seat, and the front end cover assembly not only can realize water and dust prevention, but also can realize the introduction of cutting fluid for cooling a cutter and a workpiece.

Referring to fig. 1 to 3, a front end cap assembly 10 according to an embodiment includes a first front end cap 100 and a second front end cap 200, the second front end cap 200 is disposed behind the first front end cap 100, the second front end cap 200 is fixed to a front end of a spindle base, and the first front end cap 100 is fixed to a front end of the second front end cap 200.

An axial first through hole 110 is formed in the middle of the first front end cover 100, and the first through hole 110 allows a tool to extend into and be mounted on the spindle. The rear end surface of the first front end cover 100 is provided with an annular groove 120 extending to the front end surface, and the bottom wall of the annular groove 120 is provided with at least two liquid outlet holes 130.

The second front end cap 200 and the annular groove 120 together form a receiving cavity, and the receiving cavity can be used for receiving cutting fluid. The second front end cover 200 has a second through hole 210 formed in the middle thereof, and the second through hole 210 is communicated with the first through hole 110. Specifically, the second through hole 210 and the first through hole 110 may be coaxially disposed. The second front end cap 200 is provided with a liquid inlet hole 220, an annular groove 120 corresponds to the liquid inlet hole 220, and the liquid inlet hole 220 is communicated with the accommodating cavity.

During operation, let in the cutting fluid from feed liquor hole 220, the cutting fluid gets into the holding intracavity that is enclosed by second front end housing 200 and ring channel 120 jointly, then flow out from play liquid hole 130 on the diapire of ring channel 120 again, because a ring channel 120 corresponds a feed liquor hole 220 and two at least play liquid holes 130, consequently the cutting fluid flows out first front end housing 100 after flowing out two at least ways after getting into the holding intracavity from a feed liquor hole 220, not only can realize carrying out the refrigerated function to work piece and cutter, and the cutting fluid flows out after shunting, can cool off work piece and cutter diversely, improve the cooling effect.

Further, a cutting fluid channel is formed in the side wall of the spindle base, one end of the cutting fluid channel penetrates through the outer side wall of the spindle base, the other end of the cutting fluid channel penetrates through the front end face of the spindle base, and the cutting fluid channel is communicated with the fluid inlet hole 220. Therefore, the cutting fluid can be introduced into the cutting fluid channel in the spindle base through the external cutting fluid pipeline, then enter the accommodating cavity through the fluid inlet hole 220, and finally flow out of the front end cover assembly 10 from the fluid outlet hole 130.

Further, the number of the annular grooves 120 is two, and the two annular grooves 120 are arranged axisymmetrically with respect to the central axis of the first front end cover 100. The two annular grooves 120 are not in communication with each other. Correspondingly, two liquid outlet holes 130 are formed in the bottom wall of each annular groove 120, and two cutting liquid channels are formed in the spindle seat. Therefore, in the present embodiment, the number of the annular grooves 120 is two, the number of the liquid outlet holes 130 is four, and the four liquid outlet holes 130 are uniformly distributed on the front end surface of the first front end cover 100. Therefore, it can be further ensured that the cutting fluid can be uniformly added to the tool and the workpiece. Of course, in other embodiments, the number of annular grooves 120 may also be one, three, four, etc. The number of the liquid outlet holes 130 corresponding to one annular groove 120 may also be three, four, etc., and may be flexibly configured according to actual processing requirements.

Further, the front end cap assembly 10 further includes an annular sealing ring (not shown) between the first front end cap 100 and the second front end cap 200, the annular sealing ring having a shape similar to the annular groove 120, so that the sealing performance between the first front end cap 100 and the second front end cap 200 can be increased, and the cutting fluid can be prevented from flowing out of the accommodating chamber.

Further, the front cover assembly 10 further includes a universal joint 300, and the universal joint 300 is disposed in the liquid outlet hole 130. The universal joint 300 is used for installing the nozzle, and the angle of the cutting fluid sprayed out by the nozzle can be adjusted by adjusting the angle of the universal joint 300, so that the position of the nozzle relative to the cutter and the workpiece can be flexibly adjusted, and the cutting fluid can be sprayed to the optimal position of the cutter and the workpiece more effectively. A sealing element 400 is further arranged between the universal joint 300 and the hole wall of the liquid outlet hole 130, so that the sealing performance between the universal joint 300 and the hole wall of the liquid outlet hole 130 is improved, and cutting liquid is prevented from flowing out from a gap between the universal joint 300 and the hole wall.

Referring to fig. 4 to 6, the front end cap assembly 10 further includes a vent ring 500, and the vent ring 500 is disposed on the first front end cap 100 and located in the first through hole 110. The second front end cover 200 is provided with an air inlet 230, the first front end cover 100 is provided with a ventilation channel 140, an air containing cavity 600 is enclosed between the ventilation ring 500 and the first front end cover 100, one end of the ventilation channel 140 is communicated with the air inlet 230, the other end of the ventilation channel is communicated with the air containing cavity 600, the side wall of the ventilation ring 500 is provided with an air outlet 510, and the air outlet 510 is communicated with the air containing cavity 600. Therefore, air can be introduced into the air inlet holes 230, enters the air containing cavity 600 through the air passage 140, and then is blown out of the air outlet holes 510 to the cutter, so that positive pressure air curtain sealing is formed, and external impurity dust can be effectively prevented from entering the inside of the spindle.

Further, seted up annular groove 520 on the inside wall of ring 500 ventilates, the one end and the annular groove 520 of venthole 510 are linked together, consequently, have certain clearance between the diapire of annular groove 520 and the cutter, for gaseous certain space that provides, can blow to the cutter better, improve sealing performance. The air outlet 510 may be an inclined hole, or may be a clockwise or counterclockwise annular hole to improve sealing performance.

Further, the first front end cover 100 is provided with a first fixing hole 150, the second front end cover 200 is provided with a second fixing hole 240, and the first front end cover 100 and the second front end cover 200 are fixedly connected by fasteners penetrating through the first fixing hole 150 and the second fixing hole 240. The second front end cover 200 is further provided with a third fixing hole 250, and the second front end cover 200 is fixed to the front end of the spindle base by penetrating through the third fixing hole 250 through a fastener such as a screw.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A front end cap assembly for a spindle, comprising:

2. The front end cap assembly of the spindle according to claim 1, wherein the number of the annular grooves is two, and the two annular grooves are provided axisymmetrically with respect to a central axis of the first front end cap.

3. The front end cap assembly of claim 2, wherein two of said exit holes are formed in a bottom wall of one of said annular grooves.

4. The front end cap assembly of the spindle of claim 1, further comprising an annular seal ring positioned between the first front end cap and the second front end cap.

5. The front end cap assembly of a spindle of claim 1, wherein a universal joint is disposed within the exit aperture.

6. The front end cover assembly of the spindle according to any one of claims 1 to 5, further comprising a vent ring, wherein the vent ring is disposed on the first front end cover and located in the first through hole, the second front end cover is provided with an air inlet hole, the first front end cover is provided with a vent channel, an air accommodating cavity is defined between the vent ring and the first front end cover, one end of the vent channel is communicated with the air inlet hole, the other end of the vent channel is communicated with the air accommodating cavity, a side wall of the vent ring is provided with an air outlet hole, and the air outlet hole is communicated with the air accommodating cavity.

7. The front end cap assembly of claim 6, wherein the inner sidewall of the vent ring has an annular groove, and one end of the air outlet is connected to the annular groove.

8. The front end cover assembly of the spindle according to any one of claims 1 to 5, wherein the first front end cover has a first fixing hole, the second front end cover has a second fixing hole, and a fastener is inserted into the first fixing hole and the second fixing hole to fixedly connect the first front end cover and the second front end cover.

9. A spindle comprising a spindle base and a front end cap assembly of a spindle according to any one of claims 1 to 8, the second front end cap being secured to a front end of the spindle base, the first front end cap being secured to a front end of the second front end cap.

10. The spindle of claim 9, wherein a cutting fluid channel is formed in a sidewall of the spindle base, one end of the cutting fluid channel extends through an outer sidewall of the spindle base, the other end of the cutting fluid channel extends through a front end surface of the spindle base, and the cutting fluid channel is communicated with the fluid inlet hole.