TW201941845A - Spindle structure including a first body, a first rotating shaft and a first precision nut set - Google Patents

Abstract

The present invention relates to a spindle structure, which includes: a first body, one end of which is provided with a first end surface, a first receiving groove and a first fitting portion; a first rotating shaft pivotally disposed in the first receiving groove, wherein one end of the first rotating shaft is provided with a first screwing portion; and a first precision nut set screwed to the first screwing portion, wherein the first precision nut set includes a first precision nut. The first precision nut is provided with a second end surface, and the second end surface is opposite to the second end surface of the first body. A small gap is formed between the second end surface and the first end surface. The first precision nut is provided with a second screwing portion for allowing the first screwing portion of the first rotating shaft to pass through and be screwed together. The second screwing portion is internally threaded. The second end surface is provided with a second fitting portion. The second fitting portion is fitted to the first fitting portion of the first body, such that the gap between the second end surface and the first end surface is in a meandering path shape.

Description

Spindle structure

The present invention relates to a main shaft structure, and more particularly to a main shaft structure provided with a first sleeve portion and a second sleeve portion, the second sleeve portion and the first sleeve portion are sleeved with each other therebetween. The gap is a circuitous path, and the probability of each liquid or cutting fluid entering the main shaft structure from the gap is greatly reduced.

According to my previous knowledge, the conventional spindle structure is shown in Figures 9 to 12; Figure 9 is an exploded perspective view of the conventional spindle structure; Figure 10 is the front view of the conventional spindle structure; A cross-sectional view at the conventional tenth figure AA, and the twelfth figure is an enlarged view at the conventional eleventh figure B. The patent case structure is: A second body group 70, which includes a second body 71, a second rotating shaft 72, a second front cover 73, and a second precision nut 74; The second body 71 is provided on a machine tool, the second body 71 is provided with a second receiving groove 711, and the second receiving groove 711 is in a through slot shape; The second rotating shaft 72 is pivotally disposed in the second receiving groove 711 of the second body 71. One end of the second rotating shaft 72 is provided with a fourth screwing portion 721. The fourth screwing portion 721 is External thread The second front cover 73 is fixedly connected to one end of the second body 71, and the second front cover 73 is provided for one end of the second rotating shaft 72 to be protruded and pivoted; The second precision nut 74 is coupled to the other end of the second body 71, the second precision nut 74 is screwed with the fourth screwing portion 721, and the second precision nut 74 is connected with The second front cover 73 is separated from each other, the second precision nut 74 is in the shape of an annular body, and the second precision nut 74 is in the shape of an internal thread.

However, the lack of the conventional structure is as follows: please supplement the tenth to twelfth figures. When the second rotating shaft 72 drives the tool to rotate rapidly, the second precision nut 74 will also rotate with the second The shaft 72 rotates and rotates quickly. The second precision nut 74 and the second body 71 are pivoted. There must be a gap between the two, that is, the two are in a loose fit structure. The tool and the workpiece The system will use various liquids, such as cutting fluid or coolant, etc. Each liquid will enter the second body 71 through the gap between the second precision nut 74 and the second body 71, and the second body 71 Generally, a plurality of bearings and necessary components are provided. Each component in the second body 71 is susceptible to rust when it is wet, and the rotation speed of the main shaft structure is reduced or even damaged.

In view of the lack of the conventional structure mentioned above, the inventor has, through years of experience in manufacturing, production and design in related industries, finally introduced a product with a spindle structure that can solve the conventional drawbacks.

The problem to be solved by the invention: In the conventional spindle structure, each liquid will enter the second body through the gap between the second precision nut and the second body, and the second fitting portion of the spindle structure of the present invention It is fitted with the first fitting part, and the gap between the second fitting part and the first fitting part is a circuitous path. Each liquid or cutting fluid enters the first body through the gap. The chance is greatly reduced.

Technical means for solving the problem: The present invention relates to a main shaft structure, which includes: a first body is provided with a first end surface, a first receiving groove and a first fitting portion at one end; a first rotating shaft is pivoted on In the first receiving groove, a first screwing portion is provided at one end of the first rotating shaft; a first precision nut group is screwed at the first screwing portion, and the first precision nut group includes A first precision nut; the first precision nut is provided with a second end face, the second end face is relatively positive to the second end face, and there is a small gap between the second end face and the first end face; A precision screw cap is provided with a second screwing portion, and the second screwing portion is provided for the first screwing portion to pass through and be screwed together. The second screwing portion is internally threaded, and the second A second fitting portion is provided at the end surface at a ring, and the second fitting portion is fitted with the first fitting portion, so that the gap between the second end surface and the first end surface is a circuitous path.

Contrast the effect of the prior art: the second fitting portion is fitted with the first fitting portion, and when the first rotating shaft drives the tool to rotate rapidly, the first precision nut group will also rotate with the first The shaft rotates and rotates quickly, there is a gap between the first end surface and the second end surface, and the liquid between the tool and the workpiece such as cutting fluid or coolant is used. Because the second fitting portion and the first The gap between the fitting parts is a circuitous path, and the probability that each liquid or cutting fluid enters the first body through the gap is greatly reduced. The second end surface of the first precision nut is provided with the first fitting portion, and the first fitting portion can be processed using a lathe. The first precision nut can be added without much processing cost. In addition to the first rotating shaft, a precision nut group also has the effect that the first precision nut system has a gap forming a circuitous path. The first precision nut group has a dual effect.

In order for the members of the Bureau and those skilled in the art to fully effect the effects of the present invention It is understood that the structure and composition of the present invention are described below with reference to the drawings and figures, but the following are only used to explain the embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modification made under the spirit of the present invention should still belong to the protection scope of the present invention.

10‧‧‧First Body

100‧‧‧first end face

11‧‧‧ the first tank

12‧‧‧ the first set

121‧‧‧ the first convex ring portion

122‧‧‧Second ring groove

20‧‧‧first rotation axis

21‧‧‧The first screw joint

30‧‧‧First front cover

40‧‧‧The first precision nut group

41‧‧‧The first precision nut

410‧‧‧Second end face

411‧‧‧Second screw joint

412‧‧‧Second Set

4121‧‧‧First ring groove

4122‧‧‧Second convex ring portion

4123‧‧‧first lead angle

413‧‧‧Combination

42‧‧‧Compression

421‧‧‧The third screw joint

43‧‧‧Screw

70‧‧‧Second Ontology Group

71‧‧‧Second Ontology

711‧‧‧Second Volume

72‧‧‧Second rotation axis

721‧‧‧Fourth screw joint

73‧‧‧Second front cover

74‧‧‧Second Precision Nut

The first figure is an exploded perspective view of the main shaft structure of the present invention.

The second figure is an exploded perspective view of the first precision nut group of the spindle structure of the present invention.

The third figure is a perspective assembled view of the first precision nut group of the spindle structure of the present invention.

The fourth figure is a three-dimensional combined view of the main shaft structure of the present invention.

The fifth figure is a front view of the main shaft structure of the present invention.

The sixth figure is a cross-sectional view at the fifth figure A-A of the present invention.

The seventh diagram is an enlarged view of the sixth diagram B of the present invention.

FIG. 8 is an enlarged sectional view of a second embodiment of the present invention.

The ninth figure is a three-dimensional exploded view of a conventional spindle structure.

The tenth figure is a front view of a conventional spindle structure.

The eleventh figure is a cross-sectional view at the conventional tenth figure A-A.

The twelfth figure is an enlarged view of the conventional eleventh figure B.

First, please refer to the first diagram to the third diagram. The first diagram is the main shaft structure of the present invention. An exploded perspective view, the second view is an exploded view of the first precision nut group 40 of the spindle structure of the present invention, and the third view is an exploded view of the first precision nut group 40 of the spindle structure of the present invention. The present invention relates to a The main shaft structure includes: a first body 10, the first body 10 is arranged on various machine tools or various processing mother machines, and one end of the first body 10 is provided with a first end face 100; The end surface 100 is in a flat shape. The first body 10 is provided with a first receiving groove 11 therein. The first receiving groove 11 is a through groove shape. The first end surface 100 is provided with a first fitting portion 12. The first fitting portion 12 includes a first convex ring portion 121. The first convex ring portion 121 is annular. The first convex ring portion 121 protrudes from the first end surface 100. A rotating shaft 20 is pivoted in the first receiving groove 11 of the first body 10, and the first rotating shaft 20 is fast rotating in the first receiving groove 11. A first screwing portion 21 is provided at one end of the rotating shaft 20, and the first screwing portion 21 is partially exposed outside the first end surface 100. The first screwing portion 21 is externally threaded. A first front cover 30 is fixedly coupled to the other end of the first body 10, and the first front cover 30 is provided for one end of the first rotating shaft 20 to be convexly pivoted. The first front cover 30 is far from the first fitting portion 12 and the first screwing portion 21, and the first front cover 30 is in the shape of an annular body. A first precision nut group 40 is supplemented by As shown in the second and third figures, the first precision nut group 40 is screwed at the first screwing portion 21, and the first precision nut group 40 is provided for the first screwing portion 21 Convexly extending, the first precision nut group 40 is separated from the first front cover 30. The first precision nut group 40 includes a first precision nut 41, a plurality of pressing members 42, and a plurality of screwing members 43. ; The first precision nut 41 is provided with a second end surface 410. The second end surface 410 is relatively positive to the second end surface 100 of the first body 10. There is a gap between the second end surface 410 and the first end surface 100. With a small gap, the first precision nut 411 is provided with a second screwing portion 411, and the second screwing portion 411 is provided for the first screwing portion 21 of the first rotating shaft 20 to pass through and screw together. The second screwing portion 411 is internally threaded. A second sleeve portion 412 is provided at the second end surface 410. The second sleeve portion 412 is connected to the first sleeve of the first body 10. The engaging portions 12 are engaged with each other, so that the gap between the second end surface 410 and the first end surface 100 is a circuitous path. The second engaging portion 412 is provided with a first ring groove 4121 and the first ring groove. The groove 4121 is provided for the first convex ring portion 121 to be compatible. The gap between the first ring groove 4121 and the first convex ring portion 121 is a circuitous path. The second screwing portion 411 is provided. A plurality of joint portions 413 are arranged in a ring shape, each joint portion 413 is formed in a circular perforation shape, the joint portion 413 is formed in an internal thread shape, an axis of the joint portion 413 and the second screw portion are formed. Close The axis of 411 has an angle, and the first precision nut 411 is also called a first locking nut; the pressing member 42 is accommodated at the joint portion 413, and one end of the pressing member 42 is provided with a first Three screwing portions 421, the third screwing portion 421 is matched with the second screwing portion 411, the third screwing portion 421 is pressed on the first screwing portion 21, and the pressing member 42 The number matches the number of the coupling portion 413; the screwing member 43 is locked at the coupling portion 413, the screwing member 43 is pressed against the pressing member 42, and the third screwing portion 421 is forced Pressed on the first screwing portion 21, the screwing pieces 43 are externally threaded, and the number of the screwing pieces 43 is matched with the number of the combining portions 413 and the pressing pieces 42.

Please refer to the fourth to seventh figures. The fourth figure shows the standing structure of the main shaft of the present invention. The body diagram, the fifth diagram is a front view of the spindle structure of the present invention, the sixth diagram is a cross-sectional view at the fifth diagram AA of the present invention, and the seventh diagram is an enlarged view at the sixth diagram B of the present invention. As shown, the first rotating shaft 20 is pivotally disposed at the first receiving groove 11 of the first body 10, and the first front cover 30 is fixedly coupled to one end portion of the first body 10. The first precision The nut group 40 is screwed on the first rotating shaft 20, and the first rotating shaft 20 is threaded through the first receiving slot 11, the first front cover 30 and the first precision nut group 40. The second screwing portion 411 is provided for the first screwing portion 21 to pass through and screw together, the second sleeve portion 412 is connected to the first sleeve portion 12 and the first ring groove 4121 is For the first convex ring portion 121 to be compatible, the pressing member 42 is accommodated at the combining portion 413, and the third screwing portion 421 is matched with the second screwing portion 411, that is, the third screwing portion The engaging portion 421 is also screwed with the first screwing portion 21. The screwing member 43 is locked at the connecting portion 413, and the screwing member 43 is pressed against the pressing member 42.

Please refer to FIG. 8. FIG. 8 is an enlarged cross-sectional view of the second embodiment of the present invention. As can be clearly shown from the diagram, the first fitting portion 12 of the first body 10 includes a first protrusion. A ring portion 121 and a second ring groove 122. The second ring groove 122 is provided outside the first convex ring portion 121. The second ring groove 122 is a concave ring groove. The first precision nut The second fitting portion 412 of 41 includes a first ring groove 4121 and a second convex ring portion 4122. The second convex ring portion 4122 is received in the second ring groove 122. The second convex ring The portion 4122 protrudes out of the second end surface 410, and the gap between the first convex ring portion 121, the second ring groove 122, the first ring groove 4121, and the second convex ring portion 4122 is detoured. In a path shape, a first lead angle 4123 is provided at the end of the second convex ring portion 4122. The first lead angle 4123 forms a larger gap for containing more liquid. The first lead angle 4123 is The second engaging portion 412 is more easily engaged with the first engaging portion 12, and the first lead angle 4123 is inclined.

The first precision nut group 40 has a variety of structures and cannot be detailed one by one. Therefore, as long as the second fitting portion 412 and the first fitting portion 12 are provided, the second fitting is performed. The gap between the portion 412 and the first fitting portion 12 constitutes a circuitous path, and both should fall within the protection scope of the present invention.

The advantages of the spindle structure of the present invention are:

1. Please supplement as shown in the seventh figure, the second fitting portion 412 of the first precision nut 41 is fitted with the first fitting portion 12 of the first body 10, and when the first rotation When the shaft 20 drives the tool to rotate rapidly, the first precision nut group 40 will also rotate rapidly as the first rotating shaft 20 rotates. There is a gap between the first end surface 100 and the second end surface 410. The tool and Various liquids such as cutting fluid or coolant are used between the workpieces. Because the gap between the second fitting portion 412 and the first fitting portion 12 is a circuitous path, each liquid or cutting fluid enters the gap through the gap. The probability in the first body 10 is greatly reduced.

2. The second end surface 410 of the first precision nut 41 is provided with the first fitting portion 412. The first fitting portion 412 can be processed by a lathe without increasing the number of the first precision nut 41. Processing cost. In addition to the first precision nut group 40, the first precision nut group 40 has the function of forming a gap of a detour path. The first precision nut group 40 series With dual effects.

3. The first ring groove 4121 of the second fitting portion 412 is provided for the first convex ring portion 121 to be compatible. The gap between the first ring groove 4121 and the first convex ring portion 121 is shown. The circuitous path is such that the probability that each liquid enters the main shaft structure from the gap between the first end surface 100 and the second end surface 410 is greatly reduced.

4. The first convex ring portion 121, the second ring groove 122, the first ring groove 4121, and the second The gap between the convex ring portions 4122 is a circuitous path, and the probability of each liquid entering the main shaft structure is greatly reduced.

Therefore, the main shaft structure of the present invention has industrial applicability, novelty, and progressiveness, and can meet the application requirements of the invention patent, and apply according to law.

Claims (10)

A main shaft structure includes: a first body, the first body system is set on various machine tools or various processing mother machines, one end of the first body is provided with a first end surface, and the first body system A first receiving groove is provided. The first receiving groove is a through groove. A first engaging portion is provided at the first end surface. A first rotating shaft is pivotally disposed on the first receiving shaft. In the first receiving groove of the body, the first rotating shaft rotates rapidly in the first receiving groove. One end of the first rotating shaft is provided with a first screwing portion, and the first screwing portion is externally threaded. A first precision nut group, the first precision nut group is screwed at the first screwing portion, the first precision nut group includes a first precision nut; the first precision nut The cap is provided with a second end surface, which is opposite to the second end surface. There is a small gap between the second end surface and the first end surface. The first precision nut is provided with a second screwing portion. The second screwing portion is for the first screwing portion to pass through and screw together, the second screwing portion is internally threaded, and the second end face is ring-shaped. With a second set of engagement portions, the engagement portion of the first set of lines and a second set of engagement portion of the first body with nested, so that the second end surface of the gap between the first end surface lines form a circuitous path shape. The spindle structure according to claim 1, wherein the first end surface is planar. The spindle structure according to claim 1, wherein the first fitting portion includes a first convex ring portion, the first convex ring portion is annular, and the first convex ring portion protrudes from Outside the first end surface; the second fitting portion includes a first ring groove, and the first ring groove is compatible with the first convex ring portion, and the first ring groove and the first convex ring are compatible. The gap between the departments is a circuitous path. The main shaft structure according to claim 1, wherein the first screwing part is partially exposed on the Outside the first end face. The main shaft structure according to claim 1, wherein a first front cover is provided, the first front cover is fixedly connected to the other end of the first body, and the first front cover is one end of the first rotating shaft. A convex extension is provided, the first front cover is separated from the first sleeve portion and the first screwing portion, and the first front cover is in the shape of an annular body. The spindle structure according to claim 1, wherein the first precision nut group is for the first screwing portion to protrude. The spindle structure according to claim 1, wherein the second screwing portion is provided with a plurality of coupling portions, the plurality of coupling portions are arranged in a ring shape, and each of the coupling portions is in a circular perforated shape. The first precision nut group is provided with a plurality of compression members, the compression members are accommodated at the joint portion, and one end of the compression member is provided with a third screw connection portion, and the third screw connection The part is matched with the second screwing part, the third screwing part is pressed on the first screwing part, and the number of the pressing parts is matched with the number of the bonding part; the first precision nut group A plurality of screwing parts are provided, the screwing parts are locked at the joint part, the screwing parts are pressed against the pressing part, and the third screwing part is pressed against the first screwing part. On the part, the screwing parts are externally threaded, and the number of the screwing parts is matched with the number of the coupling part and the pressing part. The spindle structure according to claim 1, wherein the axis of the joint portion and the axis of the second screw portion have an angle. The spindle structure according to claim 3, wherein the first fitting portion of the first body further includes a second ring groove, and the second ring groove is provided outside the first convex ring portion, and The second ring groove has a concave ring groove shape. The second fitting portion of the first precision nut further includes a second convex ring portion, and the second convex ring portion is received in the second ring. At the groove, the second convex ring portion protrudes from the first Outside the two end faces, the gap between the first convex ring portion, the second ring groove, the first ring groove and the second convex ring portion is a circuitous path. The spindle structure according to claim 9, wherein a first lead angle is provided at an end of the second convex ring portion, and the first lead angle forms a larger gap for containing more liquid.