Spindle structure
By designing a roundabout path-like gap and air hole in the spindle structure, the problem of damage caused by liquid entering the spindle is solved, and the durability of the spindle is improved.
Patent Information
- Application Number
- CN202110754753.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-07-02
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2041-07-02
AI Technical Summary
In the existing spindle structure, cutting fluid or coolant can easily enter the spindle through a roundabout path, resulting in damage.
A spindle structure is designed, in which a first gap is provided between the rotation shaft and the first cover body, and a second gap is provided between the rotation shaft and the second cover body. The two gaps are in a detoured path shape, and air holes are provided in the second gap to discharge liquid, which increases the difficulty of liquid entering the interior of the spindle.
It effectively reduces the probability of liquid entering the spindle structure, reduces the risk of spindle damage, and enhances the durability of the structure.
Smart Images
Figure CN115555594B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a spindle structure, and in particular to a spindle structure in which a first gap is provided between the rotating shaft and the first cover body, and a second gap is provided between the rotating shaft and the second cover body, and the first gap and the second gap are in the form of circuitous paths. With the first gap and the second gap, the probability of liquid or cutting fluid entering the interior of the spindle structure through the two circuitous paths of the first gap and the second gap and causing damage is greatly reduced, and the two circuitous paths are relatively complex. Background Art
[0002] As previously known, a common spindle structure is also a patent case applied for by the applicant, Taiwan Patent No.: 107123297, Certificate No.: I647035, Patent Name: Spindle Structure, the structure of the patent case is: a body 10, the body 10 is assembled on the machine tool, the body 10 is provided with a first receiving groove 11, the first receiving groove 11 is a through-hole shape; a rotating shaft 20, the rotating shaft 20 is pivoted at the first receiving groove 11, and one end of the rotating shaft 20 is provided with A second receiving groove 21, the rotating shaft 20 is provided with a first circumferential surface 22 and a first abutment 23; a first cover body 30, the first cover body 30 is fixed at the end of the body 10, the first cover body 30 is provided with a third receiving groove 31, the third receiving groove 31 is provided for the rotating shaft 20 to extend and pivot, the third receiving groove 31 is provided with a second abutment 32 in sequence on the outer circumference; a sealing member 50, the sealing member 50 is provided with a second circumferential surface 51, the second circumferential surface 51 and the first circumferential surface of the rotating shaft 20 22 are arranged in a sleeve, so that the sealing member 50 is arranged on the rotating shaft 20 and rotates rapidly with the rotating shaft 20, the sealing member 50 is provided with a first abutment surface 52, the first abutment surface 52 is aligned with the first abutment edge 23 and the second abutment edge 32, or the first abutment surface 52 is against the first abutment edge 23 of the rotating shaft 20 and the second abutment edge 32 of the first cover 30, and the end surface of the sealing member 50 is provided with a first end surface 57; at least one second cover 70, the second cover 70 is fixed At the end of the rotating shaft 20, the sealing member 50 and the second cover body 70 are combined on the rotating shaft 20 and rotate rapidly with the rotating shaft 20. The second cover body 70 is provided with a fourth abutment surface 71, and the fourth abutment surface 71 is aligned with the first end face 57 of the sealing member 50, that is, the sealing member 50 is assembled between the first abutment edge 23 of the rotating shaft 20 and the fourth abutment surface 71, so that the sealing member 50 is restricted by the second cover body 70 and cannot be disengaged from the rotating shaft 20.
[0003] However, the disadvantages of this common spindle structure are:
[0004] Please refer to Figure 9 of the bulletin. The gap between the first cover body 30 and the sealing member 50 is in the form of a circuitous path. However, the circuitous path formed between the first cover body 30 and the sealing member 50 is relatively monotonous, which makes it easy for cutting fluid or coolant to enter the spindle structure and cause damage.
[0005] In view of the above-mentioned shortcomings of common structures, the inventor, with his many years of experience in manufacturing, production and design in related industries, has finally come up with a spindle structure product that can solve the common drawbacks. Summary of the Invention
[0006] The main purpose of the present invention is to provide a spindle structure. In the spindle structure of the present invention, a first gap is provided between the rotating shaft and the first cover body, and a second gap is provided between the rotating shaft and the second cover body. The first gap and the second gap are in the form of a circuitous path. With the first gap and the second gap, the probability of the liquid or cutting fluid entering the interior of the spindle structure through the two circuitous paths of the first gap and the second gap and causing damage is greatly reduced. The two circuitous paths are relatively complex.
[0007] To achieve the above-mentioned purpose, the present invention provides a spindle structure, characterized in that it includes:
[0008] A main body, wherein a first receiving groove is provided in the main body, the first receiving groove passes through the main body, and the first receiving groove is in the shape of a circular groove;
[0009] a rotating shaft pivotally disposed in the first receiving groove, the rotating shaft having a first sleeve engaging portion and a second sleeve engaging portion, the first sleeve engaging portion and the second sleeve engaging portion protruding from the body;
[0010] The first fitting portion is provided with a first circumferential surface, a first annular groove, a first annular rib, a first corner end, a second circumferential surface, a second annular groove and a second annular rib in sequence, wherein the first circumferential surface has an outer diameter, and the diameter of the second circumferential surface is larger than the diameter of the first circumferential surface;
[0011] The second sleeve portion is sequentially provided with a third circumferential surface, a fourth accommodating groove, a third annular rib, and a third annular groove. The third circumferential surface has a largest outer diameter, and the outer diameter of the third circumferential surface is larger than the outer diameter of the first circumferential surface. The diameter of the third circumferential surface is larger than the diameter of the second circumferential surface. The fourth accommodating groove is provided within the range of the third circumferential surface. The fourth accommodating groove has a larger space for buffering and accommodating the liquid.
[0012] a first cover body, the first cover body being assembled at the end of the main body, the first cover body being pivotally mounted with the rotating shaft, the first cover body being provided with a third sleeve portion, the third sleeve portion being pivotally mounted with the first sleeve portion, a first gap being formed between the third sleeve portion and the first sleeve portion, the first gap being in the shape of a circuitous path, the cross section of the third sleeve portion being matched with the cross section of the first sleeve portion, the third sleeve portion penetrating the first cover body, the third sleeve portion being in the shape of a circular groove, the third sleeve portion being provided with a fourth circumferential surface, a fourth annular rib, a fourth annular groove, a second corner end, a fifth circumferential surface, a fifth annular rib and the first end surface in sequence;
[0013] A second cover body, the second cover body is assembled on the main body, the second cover body is arranged at the end of the first cover body, the first cover body is arranged between the main body and the second cover body, the second cover body is provided with a fourth fitting portion, the fourth fitting portion and the second fitting portion are pivotally arranged, the first fitting portion and the second fitting portion are arranged between the third fitting portion and the fourth fitting portion, a second gap is formed between the fourth fitting portion and the second fitting portion, the second gap is in the shape of a circuitous path, the second gap is connected to the first gap, the cross-section of the fourth fitting portion matches the cross-section of the second fitting portion, the fourth fitting portion passes through the second cover body, the fourth fitting portion is in the shape of a concave circular groove, the fourth fitting portion is provided with a sixth circumferential surface, a seventh circumferential surface, a fifth ring groove, a sixth ring rib and an air hole.
[0014] The main effect of the present invention lies in: the first gap is provided between the rotating shaft and the first cover, and the second gap is provided between the rotating shaft and the second cover. The first gap and the second gap are in the form of a circuitous path. With the first gap and the second gap, the probability of liquid or cutting fluid entering the spindle structure through the two circuitous paths of the first gap and the second gap and causing damage is greatly reduced. The first and second fitting portions are provided between the third and fourth fitting portions, and the first and second gaps are provided with at least two bends. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional exploded view of the main shaft structure of the present invention.
[0016] Figure 2 It is a side view of the rotating shaft of the main shaft structure of the present invention.
[0017] Figure 3 This invention Figure 2 Cross-sectional view at AA.
[0018] Figure 4 It is a side view of the first cover of the main shaft structure of the present invention.
[0019] Figure 5 This invention Figure 4Cross-sectional view at BB.
[0020] Figure 6 It is a side view of the second cover of the main shaft structure of the present invention.
[0021] Figure 7 This invention Figure 6 Cross-sectional view at CC.
[0022] Figure 8 It is a three-dimensional combination diagram of the main shaft structure of the present invention.
[0023] Figure 9 It is a side view of the main shaft structure of the present invention.
[0024] Figure 10 This invention Figure 9 Cross-sectional view at BB.
[0025] Figure 11 This invention Figure 10 Magnified view of point D.
[0026] Figure 12 is a cross-sectional view of a second embodiment of the present invention.
[0027] Figure 13 is a cross-sectional view of a third embodiment of the present invention. DETAILED DESCRIPTION
[0028] First see Figures 1 to 11 As shown, Figure 1 This is a three-dimensional exploded view of the main shaft structure of the present invention. Figure 2 This is a side view of the main shaft structure rotating shaft 20 of the present invention. Figure 3 This invention Figure 2 The cross-sectional view at AA, Figure 4 This is a side view of the first cover 30 of the spindle structure of the present invention. Figure 5 This invention Figure 4 The cross-sectional view at BB, Figure 6 This is a side view of the second cover 40 of the spindle structure of the present invention. Figure 7 This invention Figure 6 The present invention relates to a spindle structure, which includes:
[0029] A main body 10 is mounted on various machine tools or various processing machines. A first receiving groove 11 is defined in the main body 10. The first receiving groove 11 passes through the main body 10 and is in the shape of a circular groove.
[0030] A rotating shaft 20, please assist Figure 2 and Figure 3As shown, the rotating shaft 20 is pivoted in the first receiving groove 11. The rotating shaft 20 is in a fast rotating state. At least one set of bearing members is provided between the rotating shaft 20 and the first receiving groove 11. One end of the rotating shaft 20 is provided for various cutting tools to be assembled. The rotating shaft 20 has a first sleeve portion 21 and a second sleeve portion 22. The first sleeve portion 21 and the second sleeve portion 22 are protruded from the outside of the body 10.
[0031] The first fitting portion 21 is provided with a first circumferential surface 211, a first annular groove 212, a first annular rib 213, a first angle end 214, a second circumferential surface 215, a second annular groove 216 and a second annular rib 217 in sequence. The first circumferential surface 211 has an outer diameter, the first annular groove 212 is in the shape of a concave annular groove, the first annular rib 213 is in the shape of a convex annular body, the first annular groove 212 and the first annular rib 213 are perpendicular to the first circumferential surface 211 or close to 90 degrees, the first annular groove 212 and the first annular rib 213 are facing the main body 10, the first angle end 214 is in the shape of a curved angle, a right angle, a chamfered angle or a chamfered angle, the diameter of the second circumferential surface 215 is larger than the diameter of the first circumferential surface 211, and the two sides of the second circumferential surface 215 are provided with A first accommodating groove 2151 and a second accommodating groove 2152, wherein the first accommodating groove 2151 and the second accommodating groove 2152 have a large space for buffering and accommodating various liquids, wherein the liquid is a cutting fluid or a coolant. The first accommodating groove 2151 and the second accommodating groove 2152 are in the shape of concave annular grooves, the second annular groove 216 is in the shape of a concave annular groove, and the second annular rib 217 is in the shape of a convex annular body. The second annular groove 216 and the second annular rib 217 are perpendicular to or close to 90 degrees from the second circumferential surface 215, and the second annular groove 216 and the second annular rib 217 face the body 10. The end surface of the second annular groove 216 is flush with the end surface of the first annular groove 212, and the end surface of the second annular rib 217 is parallel to the end surface of the first annular rib 213;
[0032] The second sleeve portion 22 is provided with a third circumferential surface 221, a fourth accommodating groove 222, a third annular rib 223 and a third annular groove 224 in sequence. The third circumferential surface 221 has the largest outer diameter. The outer diameter of the third circumferential surface 221 is larger than the outer diameter of the first circumferential surface 211. The diameter of the third circumferential surface 221 is larger than the diameter of the second circumferential surface 215. The third circumferential surface 221 is provided with two third accommodating grooves 2211. The third accommodating grooves 2211 have a larger space to buffer and accommodate the liquid. The cross-section of the third accommodating grooves 2211 is slightly triangular or groove-shaped. The fourth accommodating groove 222 is provided within the range of the third circumferential surface 221. The fourth accommodating groove 222 has a larger space for buffering and accommodating the liquid. The fourth accommodating groove 222 is provided between the two third accommodating grooves 2211. The fourth accommodating groove 222 is in the shape of a concave annular groove. The third annular rib 223 is in the shape of a convex annular body. The third annular groove 224 is in the shape of a concave annular groove. The third annular rib 223 and the third annular groove 224 are perpendicular to the third circumferential surface 221 or at an angle close to 90 degrees. The third annular rib 223 and the third annular groove 224 do not face the body 10.
[0033] A first cover 30, please add Figure 4 and Figure 5 As shown, the first cover body 30 is assembled at the end of the main body 10, the first cover body 30 is pivoted with the rotating shaft 20, the first cover body 30 is provided with a third fitting portion 31, the third fitting portion 31 is pivoted for the first fitting portion 21, a first gap 51 is formed between the third fitting portion 31 and the first fitting portion 21, the first gap 51 is in the shape of a circuitous path, the cross section of the third fitting portion 31 matches the cross section of the first fitting portion 21, the third fitting portion 31 passes through the first cover body 30, the third fitting portion 31 is in the shape of a circular groove, and the third fitting portion 31 is sequentially provided with a fourth circumferential surface 311, a fourth annular rib 312, a fourth annular groove 313, a second corner end 314, a fifth circumferential surface 315, a fifth annular rib 316 and the first end surface 217;
[0034] The fourth circumferential surface 311 is pivotally arranged with the first circumferential surface 211, the fourth ring rib 312 is accommodated in the first ring groove 212, the fourth ring rib 312 is in the shape of a convex annular body, the fourth ring groove 313 is compatible with the first ring rib 213, the fourth ring groove 313 is in the shape of a concave annular groove, the second corner end 314 is aligned with the first corner end 214, the second corner end 314 is in a right angle shape, the fifth circumferential surface 31 is pivotally arranged with the second circumferential surface 215, and the fifth ring rib 316 is accommodated in the second ring groove 216, the fifth annular rib 316 is in the shape of a convex annular body, the first end surface 317 is aligned with the second annular rib 217, the first end surface 317 is flat, and there is a large space between the first end surface 317 and the fifth annular rib 316 for temporarily storing the cutting fluid or coolant. A fifth receiving groove 3161 is provided between the fifth annular rib 316 and the first end surface 317. The fifth receiving groove 3161 is in the shape of a concave annular groove and has a large space for temporarily storing the cutting fluid or coolant.
[0035] A second cover 40, please add Figure 6 and Figure 7 As shown, the second cover body 40 is assembled on the body 10, the second cover body 40 is arranged at the end of the first cover body 30, the first cover body 30 is arranged between the body 10 and the second cover body 40, the second cover body 40 is provided with a fourth sleeve portion 41, the fourth sleeve portion 41 and the second sleeve portion 22 are pivotally arranged, the first sleeve portion 21 and the second sleeve portion 22 are arranged between the third sleeve portion 31 and the fourth sleeve portion 41, and the fourth sleeve portion 41 and the second sleeve portion 22 are pivotally arranged. A second gap 52 is formed, and the second gap 52 is in the shape of a circuitous path or an L-shaped circuitous path. The second gap 52 communicates with the first gap 51. The cross-section of the fourth fitting portion 41 matches the cross-section of the second fitting portion 22. The fourth fitting portion 41 passes through the second cover 40. The fourth fitting portion 41 is in the shape of a concave circular groove. The fourth fitting portion 41 is provided with a sixth circumferential surface 411, a seventh circumferential surface 412, a fifth annular groove 413, a sixth annular rib 414, and an air hole 415.
[0036] The sixth circumferential surface 411 is pivotally arranged with respect to the third circumferential surface 221. The inner diameter of the seventh circumferential surface 412 is larger than the inner diameter of the sixth circumferential surface 411. The seventh circumferential surface 412 is aligned with the fourth accommodating groove 222. There is a large space between the seventh circumferential surface 412 and the fourth accommodating groove 222 for temporarily storing the cutting fluid or coolant. The fifth annular groove 413 is for accommodating the third annular rib 223. The fifth annular groove 413 is in the shape of a concave annular body. The sixth annular rib 414 is accommodated in the third annular groove 224. The air hole 415 is aligned with the seventh circumferential surface 412. The liquid or gas in the second gap 52 is discharged from the spindle structure through the air hole 415. The air hole 415 is in communication with the fourth sleeve portion 41. The air hole 415 is in the shape of a through hole. The axis of the air hole 415 is perpendicular to the axis of the fourth sleeve portion 41.
[0037] See also Figures 8 to 11 As shown, Figure 8 It is a three-dimensional combination diagram of the main shaft structure of the present invention. Figure 9 It is a side view of the main shaft structure of the present invention, Figure 10 This invention Figure 9 The cross-sectional view at BB, Figure 11 This invention Figure 10 In the enlarged view of point D, the first cover body 30 and the second cover body 40 are assembled with the main body 10, the second cover body 40 is assembled with the first cover body 30, the rotating shaft 20 is pivotally arranged in the first containing groove 11, the third sleeve part 31 and the fourth sleeve part 41, the first gap 51 is provided between the first sleeve part 21 and the third sleeve part 31, the second gap 52 is provided between the second sleeve part 22 and the fourth sleeve part 41, the first gap 51 and the second gap 52 are in the shape of a circuitous path, the first gap 51 and the second gap 52 greatly reduce the probability of the liquid entering the main body 10, and the liquid or gas in the second gap 52 can be discharged from the main shaft structure through the air hole 415.
[0038] Please continue reading Figure 12 and Figure 13 As shown, Figure 12 is a cross-sectional view of a second embodiment of the present invention, Figure 13 This is a cross-sectional view of the third embodiment of the present invention, please refer to Figure 10 In comparison, a different transmission assembly is provided at the rear of the transmission shaft 20 , and the transmission assembly drives the rotating shaft 20 to rotate rapidly.
[0039] The advantages of the main shaft structure of the present invention are:
[0040] 1. A first gap 51 is provided between the rotating shaft 20 and the first cover 30, and a second gap 52 is provided between the rotating shaft 20 and the second cover 40. The first gap 51 and the second gap 52 are in the form of a circuitous path. With the first gap 51 and the second gap 52, the probability of the liquid entering the interior of the main shaft structure through the two circuitous paths of the first gap 51 and the second gap 52 and causing damage is greatly reduced.
[0041] 2. The first fitting portion 21 and the second fitting portion 22 are disposed between the third fitting portion 31 and the fourth fitting portion 41 , so the first gap 51 and the second gap 52 have at least two bends.
[0042] 3. There is a pivot structure between the rotating shaft 20 and the first cover body 30, and there is a pivot structure between the rotating shaft 20 and the second cover body 40. The first cover body 30 and the second cover body 40 are relatively aligned. There is a structural relationship between the rotating shaft 20, the first cover body 30 and the second cover body 40, that is, it has a better assembly structure.
[0043] 4. Please supplement with Figure 11 As shown, the first ring groove 212, the first ring rib 213, the second ring groove 216, the second ring rib 217, the third ring rib 223, the third ring groove 224, the fourth ring rib 312, the fourth ring groove 313, the fifth ring rib 316, the fifth ring groove 413 and the sixth ring rib 414 have multiple bends, which increases the difficulty for the cutting fluid to enter the interior of the spindle structure.
[0044] 5. Please supplement with Figure 11 As shown, the seventh circumferential surface 412 and the fourth accommodating groove 222, the third accommodating groove 2211, the first end surface 317 and the second annular rib 217, the fifth accommodating groove 3161 and the second accommodating groove 2152 are a accommodating space for temporarily storing the liquid or the cutting fluid entering from the outside or slowing down its entry speed, which increases the difficulty of the liquid or the cutting fluid entering the spindle structure.
[0045] 6. The rotating shaft 20 rotates rapidly. The second sleeve portion 22 is provided with the two third receiving grooves 2211 and the fourth receiving groove 222. The cross-section of the third receiving groove 2211 is triangular. When the liquid contacts the third peripheral surface 221, it is affected by the inclination of the third receiving groove 2211 and the centrifugal force of the rapid rotation, causing the liquid to be thrown away or flow to the fourth receiving groove 222 and the seventh peripheral surface 412. The probability of the liquid entering the main shaft structure through the gap between the rotating shaft 20 and the second cover body 40 is greatly reduced.
[0046] 7. The air hole 415 is provided so that the excess liquid or gas entering the fourth accommodating groove 222 and the seventh peripheral surface 412 can be discharged out of the main shaft structure through the air hole 415, thereby reducing the probability of damage to the main shaft structure.
[0047] Therefore, the main shaft structure of the present invention has industrial applicability, novelty and progress, and can truly meet the application requirements for invention patents and be applied for in accordance with the law.
Claims
1. A spindle structure, characterized in that: It includes: A main body, wherein a first receiving groove is provided in the main body, the first receiving groove passes through the main body, and the first receiving groove is in the shape of a circular groove; a rotating shaft pivotally disposed in the first receiving groove, the rotating shaft having a first sleeve engaging portion and a second sleeve engaging portion, the first sleeve engaging portion and the second sleeve engaging portion protruding from the body; The first fitting portion is provided with a first circumferential surface, a first annular groove, a first annular rib, a first corner end, a second circumferential surface, a second annular groove and a second annular rib in sequence, wherein the first circumferential surface has an outer diameter, and the diameter of the second circumferential surface is larger than the diameter of the first circumferential surface; The second sleeve portion is sequentially provided with a third circumferential surface, a fourth accommodating groove, a third annular rib, and a third annular groove. The third circumferential surface has a largest outer diameter, and the outer diameter of the third circumferential surface is larger than the outer diameter of the first circumferential surface. The diameter of the third circumferential surface is larger than the diameter of the second circumferential surface. The fourth accommodating groove is provided within the range of the third circumferential surface. The fourth accommodating groove has a large space for buffering and accommodating liquid, and the liquid is a cutting fluid or a coolant. a first cover body, the first cover body being assembled at the end of the main body, the first cover body being pivotally mounted with the rotating shaft, the first cover body being provided with a third fitting portion, the third fitting portion being pivotally mounted with the first fitting portion, a first gap being formed between the third fitting portion and the first fitting portion, the first gap being in the shape of a circuitous path, the cross-section of the third fitting portion being matched with the cross-section of the first fitting portion, the third fitting portion penetrating the first cover body, the third fitting portion being in the shape of a circular groove, the third fitting portion being provided with a fourth circumferential surface, a fourth annular rib, a fourth annular groove, a second corner end, a fifth circumferential surface, a fifth annular rib and a first end surface in sequence; A second cover body, the second cover body is assembled on the main body, the second cover body is arranged at the end of the first cover body, the first cover body is arranged between the main body and the second cover body, the second cover body is provided with a fourth fitting portion, the fourth fitting portion and the second fitting portion are pivotally arranged, the first fitting portion and the second fitting portion are arranged between the third fitting portion and the fourth fitting portion, a second gap is formed between the fourth fitting portion and the second fitting portion, the second gap is in the shape of a circuitous path, the second gap is connected to the first gap, the cross-section of the fourth fitting portion matches the cross-section of the second fitting portion, the fourth fitting portion passes through the second cover body, the fourth fitting portion is in the shape of a concave circular groove, the fourth fitting portion is provided with a sixth circumferential surface, a seventh circumferential surface, a fifth ring groove, a sixth ring rib and an air hole.
2. The spindle structure according to claim 1, wherein: in, The body is assembled on various machine tools or various processing mother machines; the rotating shaft is in a fast rotating state, at least one set of bearing components is arranged between the rotating shaft and the first receiving groove, and one end of the rotating shaft is used for assembling various cutting tools.
3. The spindle structure according to claim 1, wherein: in, The first annular groove is in the shape of a concave annular groove, the first annular rib is in the shape of a convex annular body, the first annular groove and the first annular rib are perpendicular to the first circumferential surface or close to 90 degrees, the first annular groove and the first annular rib are facing the main body, the first corner end is in the shape of a curved angle, a right angle, or a chamfered angle, and a first accommodating groove and a second accommodating groove are provided on both sides of the second circumferential surface, the first accommodating groove and the second accommodating groove have a large space to buffer and accommodate each liquid, and the liquid is cut Cutting fluid or cooling fluid, the first accommodating groove and the second accommodating groove are in the shape of concave annular grooves, the second annular groove is in the shape of a concave annular groove, the second annular rib is in the shape of a convex annular body, the second annular groove and the second annular rib are perpendicular to or close to 90 degrees to the second circumferential surface, the second annular groove and the second annular rib are facing the main body, the end face of the second annular groove is flush with the end face of the first annular groove, and the end face of the second annular rib is parallel to the end face of the first annular rib.
4. The spindle structure according to claim 1, wherein: in, The third circumferential surface is provided with two third accommodating grooves, and the third accommodating grooves have a larger space to buffer and accommodate the liquid. The cross-section of the third accommodating groove is slightly groove-shaped. The fourth accommodating groove is provided between the two third accommodating grooves, and the fourth accommodating groove is in the shape of a concave annular groove. The third annular rib is in the shape of a convex annular body, and the third annular groove is in the shape of a concave annular groove. The third annular rib and the third annular groove are perpendicular to the third circumferential surface or close to 90 degrees. The third annular rib and the third annular groove are not facing the main body.
5. The spindle structure according to claim 1, wherein: in, The fourth circumferential surface is pivotally arranged with the first circumferential surface, the fourth annular rib is accommodated in the first annular groove, the fourth annular groove is accommodated by the first annular rib, the second angular end is aligned with the first angular end, the fifth circumferential surface is pivotally arranged with the second circumferential surface, the fifth annular rib is accommodated in the second annular groove, and the first end surface is aligned with the second annular rib.
6. The spindle structure according to claim 1, wherein: in, The fourth ring rib is in the shape of a convex annular body, the fourth ring groove is in the shape of a concave annular groove, the second corner end is in a right angle shape, the fifth ring rib is in the shape of a convex annular body, the first end face is flat, and there is a large space between the first end face and the fifth ring rib for temporarily storing the cutting fluid or coolant. A fifth accommodating groove is provided between the fifth ring rib and the first end face, and the fifth accommodating groove is in the shape of a concave annular groove. The fifth accommodating groove has a large space for temporarily storing the cutting fluid or coolant.
7. The spindle structure according to claim 5, wherein: in, The sixth circumferential surface is pivotally arranged with the third circumferential surface, the inner diameter of the seventh circumferential surface is larger than the inner diameter of the sixth circumferential surface, the seventh circumferential surface is aligned with the fourth accommodating groove, and there is a large space between the seventh circumferential surface and the fourth accommodating groove for temporarily storing the cutting fluid or coolant. The fifth annular groove is for accommodating the third annular rib, and the sixth annular rib is accommodated in the third annular groove. The air hole is aligned with the seventh circumferential surface, and the liquid or gas in the second gap is discharged from the main shaft structure through the air hole, and the air hole is in communication with the fourth sleeve portion.
8. The spindle structure according to claim 6, wherein: in, The fifth ring groove is in the shape of a concave ring, the air hole is in the shape of a perforation, and the axis of the air hole is perpendicular to the axis of the fourth sleeve portion.
Citation Information
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