TWI647034B - Spindle structure - Google Patents

Abstract

The present invention relates to a spindle structure, which includes: a first end of the first body is provided with a first end surface, a first receiving groove and a first fitting portion; a first rotating shaft is pivotally disposed in the first receiving groove a first screwing portion is disposed at one end of the first rotating shaft; a first precision nut group is screwed to 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 surface, the second end surface is opposite to the first end surface of the first body, and the second end surface and the first end surface have a small gap, the first The second screwing portion is provided with a second screwing portion for the first screwing portion of the first rotating shaft to pass through and be screwed together, and the second screwing portion is internally threaded. The second end portion is provided with a second sleeve portion, and the second sleeve portion is engaged with the first sleeve portion of the first body to make the second end surface and the first end surface The gap between them is in the shape of a roundabout path.

Description

Spindle structure

The invention relates to a spindle structure, in particular to a spindle structure having a first sleeve portion and a second sleeve portion, the second sleeve portion being nested with the first sleeve portion and between the two The gap is in the shape of a meandering path, and the probability of each liquid or cutting fluid entering the main shaft structure from the gap is greatly reduced.

As we have previously known, the conventional spindle structure, as shown in the ninth to twelfth figures, the ninth figure is an exploded view of the conventional spindle structure, and the tenth is a front view of the conventional spindle structure, the eleventh A cross-sectional view taken at the AA of the tenth figure, and a twelfth figure is an enlarged view of the eleventh drawing B. The structure of the patent is as follows: a second body set 70, the second body set 70 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 disposed on the machine tool, and the second body 71 is provided with a second receiving groove 711, and the second receiving groove 711 is formed in a through-groove shape; The second rotating shaft 72 is pivotally disposed in the second receiving slot 711 of the second body 71. The second rotating shaft 72 is provided with a fourth screwing portion 721 at one end, and the fourth screwing portion 721 is Externally threaded; The second front cover 73 is fixedly coupled to one end of the second body 71, and the second front cover 73 is provided with one end of the second rotating shaft 72 protrudingly pivoted; The second precision nut 74 is coupled to the other end of the second body 71. The second precision nut 74 is screwed to the fourth screwing portion 721. The second precision nut 74 is coupled to the second precision nut 74. The second front cover 73 is away from the second precision nut 74, and the second precision nut 74 is internally threaded.

However, the missing structure is that, as shown in the tenth to twelfth drawings, when the second rotating shaft 72 drives the tool to rotate rapidly, the second precision nut 74 also rotates with the second. The shaft 72 rotates and rotates rapidly, and the second precision nut 74 and the second body 71 are pivoted together, and there must be a gap between the two, that is, the loose fit structure between the two, the cutter and the workpiece Each liquid, such as a cutting fluid or a cooling liquid, is used, and each liquid enters the second body 71 from the gap between the second precision nut 74 and the second body 71. The second body 71 is inside. Generally, a plurality of bearings and necessary components are provided, and the components in the second body 71 are easily rusted after being wetted, so that the speed of rotation of the spindle structure is reduced or even damaged.

In view of the above-mentioned lack of the conventional structure, the inventors have been engaged in the manufacturing, production and design experience of related industries for many years, and finally have a product that can solve the drawbacks of the spindle structure.

In the conventional spindle structure, each liquid enters the second body from the gap between the second precision nut and the second body, and the second sleeve portion of the spindle structure of the present invention is coupled to the first sleeve. The gap between the second sleeve portion and the first sleeve portion is in a meandering path, and each liquid or cutting fluid enters the first body through the gap. The probability is greatly reduced.

The present invention relates to a spindle structure, which includes: a first end of the first body is provided with a first end surface, a first receiving groove and a first fitting portion; a first rotating shaft is pivotally disposed in the first receiving groove a first screwing portion is disposed at one end of the first rotating shaft; a first precision nut group is screwed to 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 surface, the second end surface is opposite to the first end surface, and the second end surface has a small gap between the second end surface and the first end surface, and the first precision nut is provided The second screwing portion is configured such that the first screwing portion is threaded and phase-engaged, the second threaded portion is internally threaded, and the second end portion is provided with a loop The second sleeve portion is sleeved with the first sleeve portion, such that the gap between the second end surface and the first end surface is in a meandering path shape.

The second sleeve portion is engaged with the first sleeve portion. When the first rotating shaft drives the cutter to rotate rapidly, the first precision nut group also rotates rapidly with the rotation of the first rotating shaft. There is a gap between the first end surface and the second end surface, and each liquid, such as cutting fluid or coolant, is used between the cutter and the workpiece, because of the gap between the second sleeve portion and the first sleeve portion. It is in the shape of a meandering path, and the probability of each liquid or cutting fluid entering the first body from the gap is greatly reduced. The first end portion of the first precision nut is provided with the first sleeve portion, and the first sleeve portion can be processed by using a lathe, and the first precision nut system does not increase the processing cost. In addition to the first rotating shaft, a precision nut group also has the effect that the first precision nut has a gap forming a circuitous path, and the first precision nut group has dual functions.

In order to make the members of the Board and those skilled in the art fully effective in the present invention The structure and composition of the present invention are described with reference to the drawings and the drawings, and the following description is only for explaining the embodiments of the present invention, and is not intended to impose any form limitation on the present invention. Any modification made in the spirit of the present invention should still fall within the protection scope of the present invention.

10‧‧‧First Ontology

100‧‧‧ first end face

11‧‧‧First slot

12‧‧‧First set of joints

121‧‧‧First convex ring

122‧‧‧second ring groove

20‧‧‧First axis of rotation

21‧‧‧First screwing

30‧‧‧First front cover

40‧‧‧First precision nut set

41‧‧‧First precision nut

410‧‧‧second end face

411‧‧‧Second screw joint

412‧‧‧Second set of joints

4121‧‧‧First ring groove

4122‧‧‧Second convex ring

4123‧‧‧First lead angle

413‧‧‧Combination Department

42‧‧‧Compression

421‧‧‧ Third screw joint

43‧‧‧ screw fittings

70‧‧‧Second Ontology Group

71‧‧‧Second ontology

711‧‧‧Second capacity

72‧‧‧second axis of rotation

721‧‧‧4nd screw joint

73‧‧‧Second front cover

74‧‧‧Second precision nut

The first figure is an exploded perspective view of the spindle 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 three-dimensional combination diagram of the first precision nut group of the spindle structure of the present invention.

The fourth figure is a three-dimensional combination diagram of the spindle structure of the present invention.

The fifth drawing is a front view of the spindle structure of the present invention.

Figure 6 is a cross-sectional view taken along line A-A of the fifth embodiment of the present invention.

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

Figure 8 is a cross-sectional enlarged view of a second embodiment of the present invention.

The ninth figure is an exploded perspective view of the conventional spindle structure.

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

Figure 11 is a cross-sectional view taken at the A-A of the tenth figure.

Figure 12 is an enlarged view of the eleventh figure B.

First, please refer to the first to third figures. The first figure is the spindle structure of the present invention. An exploded perspective view of the first precision nut group 40 of the spindle structure of the present invention, and a third perspective view of the first precision nut group 40 of the spindle structure of the present invention, the present invention relates to a The spindle structure includes a first body 10, and the first body 10 is assembled on a plurality of tool machines or a plurality of processing machines. The first body 10 is provided with a first end surface 100 at one end. The first end surface 10 is provided with a first receiving groove 11 , and the first receiving groove 11 is formed in a through-groove shape. The first end surface 100 is provided with a first fitting portion 12 . The first sleeve portion 12 includes a first convex ring portion 121 having a circular ring shape, and the first convex ring portion 121 protrudes from the first end surface 100; a first rotating shaft 20 is pivotally disposed in the first receiving slot 11 of the first body 10, and the first rotating shaft 20 is fast rotated in the first receiving slot 11, the first One end of the rotating shaft 20 is provided with a first screwing portion 21, 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, the first front cover 30 is fixedly coupled to the other end of the first body 10, and the first front cover 30 is pivotally extended at one end of the first rotating shaft 20, The first front cover 30 is away from the first sleeve portion 12 and the first screw portion 21, and the first front cover 30 is in the shape of a ring; 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 to the first screwing portion 21, and the first precision nut group 40 is provided for the first screw portion 21 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 screw members 43. ; The first precision nut 41 is provided with a second end surface 410 that is opposite to the first end surface 100 of the first body 10, and has a first end surface 410 and the first end surface 100. The first precision nut 41 is provided with a second screwing portion 411 for the first screwing portion 21 of the first rotating shaft 20 to pass through and be screwed together. The second screwing portion 411 is internally threaded, and the second end portion 410 is provided with a second sleeve portion 412, and the second sleeve portion 412 is coupled to the first sleeve of the first body 10 The joint portion 12 is sleeved so that the gap between the second end surface 410 and the first end surface 100 is in a meandering path shape, and the second sleeve portion 412 is provided with a first ring groove 4121, the first ring concave portion 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 in a meandering path shape, and the second screwing portion 411 is provided on the second screwing portion 411. The plurality of joint portions 413 are annularly arranged, each joint portion 413 has a circular perforation shape, and the joint portion 413 has an internal thread shape, and the axis of the joint portion 413 and the second screw Combined The axis of the 411 has an angle, and the first precision nut 41 is also referred to as a first locking nut; the pressing member 42 is received at the joint portion 413, and the pressing member 42 is provided with a first end. The third screwing portion 421 is matched with the second screwing portion 421, and the third screwing portion 421 is pressed against the first screwing portion 21, and the pressing member 42 is The number is matched with the number of the joints 413; the screwing member 43 is locked at the joint portion 413, and the screwing member 43 is pressed against the pressing member 42 to force the third screwing portion 421 Pressed on the first screwing portion 21, the screwing member 43 is externally threaded, and the number of the screwing members 43 is matched with the number of the joint portion 413 and the pressing member 42.

Please refer to the fourth to seventh figures. The fourth figure is the stand of the spindle structure of the present invention. Figure 5 is a front view of the spindle structure of the present invention, a sixth view is a cross-sectional view of the fifth Figure AA of the present invention, and a seventh figure is an enlarged view of the sixth Figure B of the present invention, which can be clearly seen from the figure The first rotating shaft 20 is pivotally disposed at the first receiving slot 11 of the first body 10. The first front cover 30 is fixedly coupled to one end of the first body 10, the first precision The first rotating shaft 20 is disposed in the first receiving slot 11 , the first front cover 30 , and the first precision nut group 40 , and the first rotating shaft 20 is disposed on the first rotating shaft 20 . The second screwing portion 411 is configured to be threaded by the first screwing portion 21, and the second socket portion 412 is engaged with the first sleeve portion 12, and the first ring groove 4121 is The first protruding ring portion 121 is compatible with the second screwing portion 421, and the third screwing portion 421 is matched with the second screwing portion 411. The engaging portion 421 is also screwed to the first screwing portion 21 , and the screwing member 43 is locked to the joint portion 413 , and the screwing member 43 is pressed against the pressing member 42 .

Referring to the eighth embodiment, the eighth drawing is a cross-sectional enlarged view of the second embodiment of the present invention. As can be clearly shown, the first sleeve portion 12 of the first body 10 includes a first convex portion. a ring portion 121 and a second ring groove 122, the second ring groove 122 is disposed outside the first ring portion 121, and the second ring groove 122 is in the shape of a concave ring groove, the first precision nut The second sleeve portion 412 of the first ring portion 412 includes a first ring groove 4121 and a second ring portion 4122. The second ring portion 4122 is received at the second ring groove 122. The portion 4122 is protruded from the second end surface 410. The gap between the first ring portion 121, the second ring groove 122, the first ring groove 4121 and the second ring portion 4122 is roundabout. a first guide angle 4123 is formed at an end of the second convex ring portion 4122. The first lead angle 4123 forms a larger gap for accommodating more liquid. The first lead angle 4123 is The second fitting portion 412 is more easily engaged with the first fitting portion 12, and the first guiding angle 4123 is inclined.

The first precision nut group 40 has a plurality of structures and cannot be described in detail. Therefore, as long as the second sleeve portion 412 and the first sleeve portion 12 are disposed, the second sleeve is assembled. The gap between the portion 412 and the first nesting portion 12 constitutes a meandering path and is within the protection scope of the present invention.

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

1 , as shown in the seventh figure, the second sleeve portion 412 of the first precision nut 41 is engaged with the first sleeve portion 12 of the first body 10 when the first rotation When the shaft 20 drives the tool to rotate rapidly, the first precision nut group 40 also rotates rapidly as the first rotating shaft 20 rotates, and there is a gap between the first end surface 100 and the second end surface 410. Each liquid is used as a cutting fluid or a coolant, and the gap between the second fitting portion 412 and the first fitting portion 12 is in a meandering path, and each liquid or cutting fluid enters the gap. The probability within the first body 10 is greatly reduced.

2. The second end surface 410 of the first precision nut 41 is provided with the second sleeve portion 412 to process the second sleeve portion 412. The first precision nut 41 can be processed by using a lathe. In addition to the first rotating shaft 20, the first precision nut group 40 also has the effect of forming a gap of a meandering path, and the first precision nut group 40 is provided. Has a dual effect.

The first ring groove 4121 of the second sleeve portion 412 is compatible with the first ring portion 121. The gap between the first ring groove 4121 and the first ring portion 121 is In the meandering path shape, the probability of each liquid entering the spindle 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 collar portions 4122 is in the shape of a meandering path, and the probability of each liquid entering the spindle structure is greatly reduced.

Therefore, the spindle structure of the present invention has industrial utilization, novelty and advancement, and can meet the application requirements of the invention patent, and submit an application according to law.

Claims (10)

A spindle structure includes: a first body, the first system is disposed on each type of machine tool or various processing machines, and the first body is provided with a first end surface at one end, the first body system a first receiving groove is formed, the first receiving groove is formed in a through-groove shape, and the first end surface is provided with a first fitting portion; a first rotating shaft, the first rotating shaft is pivoted on the first The first rotating shaft is rapidly rotated in the first receiving groove, and the first rotating shaft is provided with a first screwing portion at one end, and the first screwing portion is externally threaded. a first precision nut group, the first precision nut group is screwed to the first screw portion, the first precision nut group includes a first precision nut; the first precision screw The cap is provided with a second end surface, the second end surface is opposite to the first end surface, the second end surface has a small gap between the second end surface, and the first precision nut is provided with a second screwing portion The second screwing portion is configured to be threaded through the first screwing portion, and the second screwing portion is internally threaded, and the second end portion is looped 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 of claim 1, wherein the first end face is planar. The spindle structure of claim 1, wherein the first sleeve portion includes a first convex ring portion, the first convex ring portion has a circular body shape, and the first convex ring portion protrudes The first end face is configured to include a first ring groove, the first ring groove is compatible with the first convex ring portion, and the first ring groove and the first convex ring are The gap between the sections is in the shape of a meandering path. The spindle structure of claim 1, wherein the first screw portion is partially exposed Outside the first end face. The spindle structure of claim 1, wherein a first front cover is fixedly coupled to the other end of the first body, the first front cover is provided for one end of the first rotating shaft The first front cover is away from the first sleeve portion and the first screw portion, and the first front cover has a circular body shape. The spindle structure of claim 1, wherein the first precision nut group is partially convex for the first screw portion. The spindle structure of claim 1, wherein the second screwing portion is provided with a plurality of joint portions, the plurality of joint portions are arranged in a ring shape, and each joint portion has a circular perforation shape, and the joint portion is The first precision nut group is provided with a plurality of pressing members, and the pressing member is received at the joint portion, and the pressing member is provided with a third screwing portion at one end, the third screwing portion The first screwing portion is engaged with the second screwing portion, and the third screwing portion is pressed against the first screwing portion, and the number of the pressing members is matched with the number of the joint portions; the first precision nut group a plurality of screwing members are disposed, the screwing member is locked at the joint portion, and the screwing member is pressed against the pressing member, so that the third screwing portion is pressed against the first screwing portion. In the upper part, the screwing member is in the shape of an external thread, and the number of the screwing members is matched with the number of the joint portion and the pressing member. The spindle structure of claim 1, wherein the axis of the joint has an angle with an axis of the second screw. The spindle structure of claim 3, wherein the first sleeve portion of the first body further comprises a second ring groove, the second ring groove is disposed outside the first convex ring portion, The second ring groove has a concave ring groove shape, and the second sleeve portion of the first precision nut further includes a second convex ring portion, and the second protruding ring portion is received in the second ring portion. At the groove, the second convex ring portion protrudes from the first The gap between the first convex ring portion, the second ring groove, the first ring groove and the second convex ring portion is in a meandering path shape. The spindle structure of claim 9, wherein the second guide ring portion is provided with a first lead angle, and the first lead angle forms a larger gap for accommodating more liquid.