阅读说明：本技术 一种机床顶尖上的防水防尘结构 (Waterproof and dustproof structure on top of machine tool ) 是由 潘林华 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种机床顶尖上的防水防尘结构,包括为回转体结构的套筒与顶针,所述顶针上固定设有旋转套,所述旋转套套设在套筒上,且旋转套的内壁与套筒的外周面之间具有间隙,从而使得旋转套随顶针旋转时,与套筒之间具有相对运动；所述套筒的外周面上设有若干沿轴向间隔分布的挡水槽,且在若干挡水槽之间连接有导水槽A,所述导水槽A延伸至旋转套所覆盖的套筒位置上的外侧,从而将处于挡水槽上的水通过导水槽A导出。本发明旋转套套设住套筒,作为第一道防线,若干挡水槽作为第二道防线,嵌合体结构作为第三道防线,从而形成了组合式防水结构,杜绝了顶针与套筒之间的任何可能的进水、进粉末的可能,避免轴承受到损坏,提高了使用寿命。(The invention discloses a waterproof and dustproof structure on a machine tool top, which comprises a sleeve and a top pin, wherein the sleeve is of a revolving body structure, the top pin is fixedly provided with a rotating sleeve, the rotating sleeve is sleeved on the sleeve, and a gap is formed between the inner wall of the rotating sleeve and the outer peripheral surface of the sleeve, so that the rotating sleeve and the sleeve move relatively when rotating along with the top pin; the outer circumferential surface of the sleeve is provided with a plurality of water retaining grooves which are distributed at intervals along the axial direction, a water guide groove A is connected among the water retaining grooves, and the water guide groove A extends to the outer side of the sleeve covered by the rotating sleeve, so that water on the water retaining grooves is guided out through the water guide groove A. The sleeve is sleeved by the rotary sleeve to serve as a first defense line, the water retaining grooves serve as a second defense line, and the embedded body structure serves as a third defense line, so that a combined waterproof structure is formed, the possibility of water inlet and powder inlet between the thimble and the sleeve is eliminated, the bearing is prevented from being damaged, and the service life is prolonged.)

1. The utility model provides a waterproof dustproof construction on lathe top, includes sleeve and thimble for solid of revolution structure, and the thimble passes a plurality of bearings and installs in the sleeve through the bearing to make the relative sleeve of thimble rotatable, its characterized in that: the thimble is fixedly provided with a rotating sleeve, the rotating sleeve is sleeved on the sleeve, and a gap is formed between the inner wall of the rotating sleeve and the outer peripheral surface of the sleeve, so that the rotating sleeve and the sleeve move relatively when rotating along with the thimble; the outer circumferential surface of the sleeve is provided with a plurality of water retaining grooves which are distributed at intervals along the axial direction, a water guide groove A is connected among the water retaining grooves, and the water guide groove A extends to the outer side of the sleeve covered by the rotating sleeve, so that water on the water retaining grooves is guided out through the water guide groove A.

2. The waterproof and dustproof structure on the machine tool chip as claimed in claim 1, wherein: the water retaining groove is provided with three channels.

3. The waterproof and dustproof structure on the machine tool chip as claimed in claim 1 or 2, wherein: the water guide groove A is located at the lowest point of the outer peripheral surface of the sleeve, and the water guide groove A is inclined downwards.

4. The waterproof and dustproof structure on the machine tool chip as claimed in claim 1, wherein: the inner end face of the rotary sleeve and the outer end face of the sleeve are provided with an embedded body structure, the embedded body structure comprises a sub embedded ring arranged on the inner end face of the rotary sleeve and a main embedded groove arranged on the outer end face of the sleeve and correspondingly matched with the sub embedded ring, and a gap is formed between the sub embedded ring and the main embedded groove.

5. The waterproof and dustproof structure on the machine tool nose as set forth in claim 4, wherein: the sub-embedding rings comprise a plurality of concentric circular annular embedding rings.

6. The waterproof and dustproof structure on the machine tool nose as set forth in claim 4, wherein: the female caulking groove comprises a plurality of concentric annular caulking grooves, and a water guide groove B is arranged between the annular caulking grooves.

7. The waterproof and dustproof structure on the machine tool chip as claimed in claim 6, wherein: the water chute B is positioned at the lower part of the female caulking groove and is vertically downward.

8. The waterproof and dustproof structure on the machine tool chip as claimed in claim 1, wherein: and a separated hard sealing connection structure is arranged between the outer end surface of the sleeve and the sleeve.

9. The waterproof and dustproof structure on the machine tool chip as claimed in claim 1, wherein: the sleeve is provided with a step surface corresponding to the position matched with the rotary sleeve, the step surface is opposite to the rear end surface of the rotary sleeve, and a gap is formed between the step surface and the rear end surface of the rotary sleeve.

Technical Field

The invention belongs to the technical field of machine tool accessories, relates to a machine tool center, and particularly relates to a waterproof and dustproof structure on the machine tool center.

Background

The machine tool center generally comprises a sleeve and a thimble, the tail end of the thimble extends into the sleeve and is movably connected with the sleeve through a plurality of bearings, an oil seal and an end cover are sequentially arranged in a space between the outer peripheral surface of the thimble and the inner wall of the sleeve, the end cover is in threaded connection with the sleeve, the end cover enables a relatively sealed installation space to be formed in the sleeve, and the oil seal is located in the installation space. During actual work, the head end of the center is abutted to the workpiece and rotates at a high speed along with the workpiece, and the workpiece needs to be continuously washed by cooling liquid in the machining process, so that the cooling liquid enters the installation space along the gap between the thimble and the sleeve, the oil seal and the bearing are damaged, and the service life of the machine tool center is shortened.

In addition, when cutting non-coolant for ball mill cast iron and the like, powder may enter the installation space through the gap, thereby threatening the service life of the bearing and the oil seal.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a waterproof and dustproof structure on a machine tool top, which can prevent cooling liquid or powder from entering the sleeve, prevent a bearing from being corroded and prolong the service life.

In order to solve the technical problems, the technical scheme of the waterproof and dustproof structure on the top of the machine tool is as follows:

the invention discloses a waterproof and dustproof structure on a machine tool top, which comprises a sleeve and a thimble, wherein the sleeve is of a revolving body structure, and the thimble penetrates through a plurality of bearings and is arranged in the sleeve through the bearings, so that the thimble can rotate relative to the sleeve; the thimble is fixedly provided with a rotating sleeve, the rotating sleeve is sleeved on the sleeve, and a gap is formed between the inner wall of the rotating sleeve and the outer peripheral surface of the sleeve, so that the rotating sleeve and the sleeve move relatively when rotating along with the thimble; the outer circumferential surface of the sleeve is provided with a plurality of water retaining grooves which are distributed at intervals along the axial direction, a water guide groove A is connected among the water retaining grooves, and the water guide groove A extends to the outer side of the sleeve covered by the rotating sleeve, so that water on the water retaining grooves is guided out through the water guide groove A.

The water retaining groove is provided with three channels.

The water guide groove A is located at the lowest point of the outer peripheral surface of the sleeve, and the water guide groove A is inclined downwards.

The inner end face of the rotary sleeve and the outer end face of the sleeve are provided with an embedded body structure, the embedded body structure comprises a sub embedded ring arranged on the inner end face of the rotary sleeve and a main embedded groove arranged on the outer end face of the sleeve and correspondingly matched with the sub embedded ring, and a gap is formed between the sub embedded ring and the main embedded groove.

The sub-embedding rings comprise a plurality of concentric circular annular embedding rings.

The female caulking groove comprises a plurality of concentric annular caulking grooves, and a water guide groove B is arranged between the annular caulking grooves.

The water chute B is positioned at the lower part of the female caulking groove and is vertically downward.

And a separated hard sealing connection structure is arranged between the outer end surface of the sleeve and the sleeve.

The sleeve is provided with a step surface corresponding to the position matched with the rotary sleeve, the step surface is opposite to the rear end surface of the rotary sleeve, and a gap is formed between the step surface and the rear end surface of the rotary sleeve.

The invention has the beneficial effects that:

compared with the prior art, the waterproof and dustproof structure on the machine tool center has the advantages that the sleeve is sleeved with the rotating sleeve to serve as a first defense line, the water retaining grooves serve as a second defense line, and the embedded body structure serves as a third defense line, so that a combined waterproof structure is formed, the possibility of water and powder entering between the ejector pin and the sleeve is eliminated, the bearing is prevented from being damaged, and the service life is prolonged.

Drawings

Fig. 1 is a half sectional view of a waterproof and dustproof structure on a machine tool center of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a perspective view of the sleeve of the waterproof and dustproof structure on the machine tool center of the present invention;

fig. 4 is a schematic structural view of a sleeve of the waterproof and dustproof structure on the machine tool center of the invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

referring to fig. 1 to 4, the present invention provides a waterproof and dustproof structure on a machine tool tip, including a sleeve 1 and a thimble 2, which are of a revolving structure, wherein the thimble 2 passes through a plurality of bearings 3 and is installed in the sleeve 1 through the bearings 3, so that the thimble 2 can rotate relative to the sleeve 1; a rotating sleeve 4 is fixedly arranged on the thimble 2, the rotating sleeve 4 is sleeved on the sleeve 1, and a gap is formed between the inner wall of the rotating sleeve 4 and the outer peripheral surface of the sleeve 1, so that the rotating sleeve 4 and the sleeve 1 move relatively when rotating along with the thimble 2; the outer circumferential surface of the sleeve 1 is provided with a plurality of water retaining grooves 5 which are distributed at intervals along the axial direction, a water guide groove A6 is connected between the water retaining grooves 5, and the water guide groove A6 extends to the outer side of the position of the sleeve 1 covered by the rotating sleeve 4, so that water on the water retaining grooves 5 is guided out through the water guide groove A6.

The water guide groove A6 is at the lowest point of the outer peripheral surface of the sleeve 1, and the water guide groove A6 is inclined downwards.

An embedded body structure is arranged between the inner end face of the rotary sleeve 4 and the outer end face of the sleeve 1, the embedded body structure comprises a sub-embedded ring 7 arranged on the inner end face of the rotary sleeve 4 and a main embedded groove 8 arranged on the outer end face of the sleeve 1 and correspondingly matched with the sub-embedded ring 7, and a gap is formed between the sub-embedded ring 7 and the main embedded groove 8.

The sub-insert 7 comprises a plurality of concentric annular inserts 9.

The female caulking groove 8 comprises a plurality of concentric circular annular caulking grooves 10, and a water guide groove B11 is arranged between the annular caulking grooves 10.

The water chute B11 is arranged at the lower part of the female caulking groove 8, and the water chute B11 is vertically downward.

And a separated hard sealing connection structure is arranged between the outer end surface of the sleeve 1 and the sleeve 1.

The sleeve 1 is provided with a step surface 12 corresponding to the position matched with the rotary sleeve 4, the step surface 12 is opposite to the rear end surface of the rotary sleeve 4, and a gap is formed between the step surface 12 and the rear end surface of the rotary sleeve 4.

The working principle of the waterproof and dustproof structure on the machine tool center of the invention is explained as follows:

according to the machine tool center, the front end of the ejector pin 2 abuts against a workpiece, when the machine tool center runs, the ejector pin 2 rotates synchronously with the workpiece, the rotating sleeve 4 is sleeved on the sleeve 1, in order to improve the sealing performance, the stepped surface 12 is specially arranged on the sleeve 1, the rear end surface of the rotating sleeve 4 is opposite to the stepped surface 12, and the outer diameter of the rotating sleeve 4 is consistent with the outer diameter of the stepped surface 12 of the sleeve 1, so that cooling liquid can be prevented from entering a gap between the inner wall of the rotating sleeve 4 and the outer peripheral surface of the sleeve 1 from a gap between the rear end surface of the rotating sleeve 4 and the stepped surface 12 to the maximum extent. The rotating sleeve 4 rotates synchronously with the ejector pin 2, when the cooling liquid enters the first water retaining groove 5 closest to the gap from the gap between the rear end face of the rotating sleeve 4 and the step face 12, under the action of the gravity of the cooling liquid, the cooling liquid flows downwards along the water retaining groove 5 and flows to the water retaining groove A6, so that the cooling liquid is guided out of the position between the rotating sleeve 4 and the sleeve 1 along the water retaining groove A6, and the like, if the cooling liquid exceeds the first water retaining groove 5, the cooling liquid enters the second water retaining groove 5 and the third water retaining groove 5 … …, and finally, the cooling liquid flows to the water retaining groove A6 along with the gravity of the cooling liquid and is finally discharged.

When the coolant liquid surpassed last manger plate groove 5, then the coolant liquid can get into chimera structure position, and the chimera structure has a plurality of son abaculus rings 7 and female caulking groove 8 to form multichannel water guide space, thereby form final one defence line, undertake final waterproof effect, if the coolant liquid gets into this water guide space, then the coolant liquid is located in the clearance between son abaculus rings 7 and the female caulking groove 8, thereby prevent the further downflow of coolant liquid, and prevent that the coolant liquid from getting into inside sleeve 1.

When the cooling liquid is washed away, a part of the cooling liquid flows to the inner wall of the rotary sleeve 4, the rotary sleeve 4 rotates at a high speed, the centrifugal force of the rotary sleeve 4 enables the cooling liquid not to enter the sleeve 1, in addition, the gap between the inner wall of the rotary sleeve 4 and the outer peripheral surface of the sleeve 1 is small and ranges from 0.2mm to 1mm, so that strong air pressure is formed between the rotary sleeve 4 and the sleeve 1, the cooling liquid between the rotary sleeve 4 and the sleeve 1 is washed towards the outer sides of the rotary sleeve and the sleeve, and the cooling liquid is prevented from entering the sleeve 1.

In the practical application process, the machine tool can also process some ball-milling cast iron and other materials which do not need to be cut with water, so that the fine powder generated in the process of processing the workpiece is still effective to be blocked by each defense line of the invention, in the practical test, the machine tool cuts for 8 hours every day and continuously works for 365 days, the tip of the invention is cut, decomposed and observed, the powder or cooling liquid can only reach the first water retaining groove 5 and the second water retaining groove 5, and the powder or the cooling liquid is difficult to continuously enter the third water retaining groove 5 and the mosaic structure.

In conclusion, the waterproof and dustproof structure on the machine tool center has waterproof and dustproof effects on the center in all directions, so that the waterproof and dustproof performance of the center is structurally improved.

The waterproof and dustproof structure on the machine tool center provided by the embodiment of the invention is described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.