TWI574774B - Spindle structure - Google Patents

Description

Spindle structure

The invention relates to a spindle structure, in particular to a spindle structure which is provided with an enclosing member, which can prevent each liquid from entering the inside of the main shaft structure, and the enclosing member has a liquid-proof effect.

As we have previously known, the spindle structure used in the machine tool is used, such as Taiwan patent application number: 103209154, certificate number: M489044, patent name: machine tool spindle with gas power retaining device, one with gas power The tool spindle of the water retaining device comprises: a spindle seat, the center of which is provided with a rotatable rotating shaft center, and an air inlet passage is arranged in the wall surface of the spindle seat, and one end of the air inlet passage is connected to a gas source; And a dust cover disposed at an end of the rotating shaft, an air power passage is disposed between the dust cover and the spindle seat, and the air power channel is connected to the other end of the air inlet channel; wherein the gas The power channel is arranged along the radial direction of the spindle seat.

However, the missing structure of this conventional spindle structure is:

1. As shown in the fifth figure of the bulletin, basically, the dust cover 20 and the other components are loosely fitted, and the dust cover 20 has a gap between the outer peripheral surface and the front cover 14 of the spindle and the dust cover 20 The gap between the inner circumferential surface and the rotating shaft 11 causes the liquid to enter the main shaft of the machine tool.

2. As shown in the fifth figure of the bulletin, the dust cover 20 needs to be screwed onto the rotating shaft 11 by using at least two screwing members, and the plurality of screwing members need to be progressively pressed several times when pressing against the dustproof cover 20. Locking system is more expensive work.

3. Please supplement the fifth figure in the bulletin. The main shaft structure is connected to a gas source at the inlet passage 12. Generally, the gas source in the factory should basically be an air compressor. It will be located at the corner of the factory. The intake passage 12 needs to be connected with a gas pipeline to communicate with the air compressor. The gas pipeline needs a certain length to connect to the corner of the factory, which requires considerable pipeline cost.

In view of the lack of the above-mentioned conventional spindle 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.

The utility model uses a gas to prevent each liquid from entering the inside of the main shaft structure, and the invention relates to a main shaft structure, in particular to a main shaft structure provided with an enclosing member, which can prevent each liquid from entering the inside of the main shaft structure, The seals have a liquid-repellent effect.

A spindle structure includes: a system having a first pocket; a rotating shaft pivotally disposed at the first pocket, the rotating shaft having a second pocket, a first perimeter, and a first end a front cover is fixed at the end of the body, and the front cover is provided with a third receiving groove for pivoting one end of the rotating shaft, and the third receiving groove is provided with an outer ring a second edge, a first chamber and a third edge; a device is provided with a second circumferential surface, the second circumferential surface is fixed to the first circumferential surface, so that the sealing member is coupled to the rotating shaft Upwardly rotating with the rotating shaft, the second peripheral surface and the first circumferential surface are in a tight fitting structure, the sealing member is provided with a fourth abutting edge, the fourth abutting edge and the first abutting edge and the first The two parts are oppositely disposed, and the enclosing member has a ring protrusion protruding from the ring, the ring protrusion is received in the first chamber, and the ring protrusion is provided with a second chamber toward the outer circumferential surface and the first a beveled surface, the annular convex portion is provided with a second inclined surface facing the inner circumferential surface, the second inclined surface is provided with an end surface of the annular convex portion, and the sealing member is provided with a fifth abutting edge, and the fifth edge is coupled with The third abutting edge is abutted, and a third inclined surface is disposed at an end surface of the sealing member.

The second circumferential surface of the sealing member and the first circumferential surface of the rotating shaft are tightly fitted, so that there is no gap between the second circumferential surface of the sealing member and the first circumferential surface of the rotating shaft. When the rotating shaft drives the tool to rotate rapidly, each liquid, such as cutting fluid or coolant, is used between the tool and the workpiece, and the liquid does not enter the main shaft structure through the gap. The sealing member rotates rapidly, and the third inclined surface of the sealing member faces the ground. The third inclined surface causes the liquid to contact the third inclined surface and is subjected to the inclination of the third inclined surface and the centrifugal force of rapid rotation. The probability that the liquid enters the main shaft structure by the gap between the fifth abutting edge and the third abutting edge of the front cover is greatly reduced, and the third inclined surface has the effect of reducing the entry of each liquid. There is a machining tolerance between the outer circumferential surface of the rotating shaft and the third receiving groove of the front cover, that is, the two are basically loosely fitted, and the liquid is structurally surrounded by the outer peripheral surface and the front cover of the rotating shaft. The gap between the third pockets enters the body, and the liquid enters the second chamber at a gap between the fifth flange and the third flange, and the second chamber is a large space structure. When the liquid enters the second chamber, the speed of entering is reduced. When the sealing member rotates rapidly, the liquid entering the second chamber is re-opened by the centrifugal force of the first inclined surface. If the liquid has passed through the second chamber, the end surface of the annular protrusion of the sealing member is provided with a second inclined surface, and a space is formed between the second inclined surface and the first chamber of the front cover, and the liquid enters The speed will also be reduced here, and the centrifugal force of the second slope will also open the liquid here.

The structure and composition of the present invention are described in conjunction with the drawings and the drawings, and the following description is only for explaining the implementation of the present invention. For example, it is not intended to limit the invention in any way, so any modification made in the spirit of the invention should still belong to the invention. The scope of protection.

10‧‧‧ Ontology

11‧‧‧First slot

12‧‧‧First screwing

20‧‧‧Rotary axis

21‧‧‧Second capacity

22‧‧‧First week

23‧‧‧First arrival

24‧‧‧ring

30‧‧‧ front cover

31‧‧‧ third cavity

32‧‧‧Secondary

33‧‧‧First room

34‧‧‧ Third Marriage

35‧‧‧Perforation

40‧‧‧ screw fittings

50‧‧‧Fittings

51‧‧‧second week

52‧‧‧ fourth arrival

53‧‧‧ ring convex

531‧‧‧Second room

532‧‧‧First bevel

533‧‧‧Second slope

54‧‧‧ fifth arrival

55‧‧‧ third slope

56‧‧‧ sixth match

561‧‧‧4th bevel

57‧‧‧ ring convex

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

The second figure is a perspective view of the front cover of the present invention.

The third figure is a front view of the closure of the present invention.

The fourth drawing is a cross-sectional view of the third drawing A-A of the present invention.

The fifth drawing is an enlarged view of the fourth drawing B of the present invention.

Fig. 6 is a perspective assembled view of the spindle structure of the present invention.

Figure 7 is a top view of the spindle structure of the present invention.

Figure 8 is a cross-sectional view taken along line C-C of the seventh embodiment of the present invention.

The ninth drawing is an enlarged view of the eighth drawing D of the present invention.

Figure 10 is a cross-sectional view showing a second embodiment of the spindle structure of the present invention.

Figure 11 is an enlarged view of the fourth embodiment of the spindle structure of the present invention.

Figure 12 is a schematic view showing a third embodiment of the spindle structure of the present invention.

First, please refer to the first figure. The first figure is an exploded perspective view of the spindle structure of the present invention. The present invention relates to a spindle structure, which is used on a machine tool, and includes a body 10, the body 10 The main body 10 is provided with a first receiving groove 11 , and the first receiving groove 11 is formed in a perforated shape. The first receiving groove 11 is formed in a penetrating shape, and the end surface of the body 10 is provided with a plurality of a first screwing portion 12, the plurality of first screwing portions 12 having the first pocket 11 as an axis The rotating shaft 20 is pivotally disposed at the first receiving slot 11 of the body 10. The rotating shaft 20 and the first receiving slot 11 are provided with a bearing member, and the rotating shaft 20 is provided at one end. The second receiving groove 21 is provided for the tool receiving. The rotating shaft 20 is provided with a first circumferential surface 22 and a first abutting edge 23; a front cover 30, supplemented by a second The second figure is a perspective view of the front cover 30 of the present invention. The front cover 30 is fixed at the end of the body 10. The front cover 30 is provided with a third receiving slot 31, and the third receiving slot 31 is provided. The rotating shaft 20 is extended and extended at one end. The third receiving groove 31 is provided with a second abutting edge 32, a first receiving chamber 33 and a third abutting edge 34, which are sequentially connected to the outer peripheral surface. The first abutting edge 23 of the rotating shaft 20 is flush with the second abutting edge 33. The third abutting edge 33 protrudes from the end surface of the front cover 30. The front cover 30 is provided with a plurality of through holes 35. Each of the through holes 35 is aligned with each of the first screwing portions 12, and the number of the through holes 35 is the same as that of the first screwing portion 12, and the plurality of through holes 35 are annularly arranged with the third pocket 31 as an axis; Screwing member 40, each screwing member 40 is sleeved in front Each of the through holes 35 is screwed to each of the first screwing portions 12 of the body 10, so that the front cover 30 is fixed at the end surface of the body 10; The fourth drawing is a front view of the sealing member of the present invention, the fourth drawing is a sectional view of the third drawing AA of the present invention, and the fifth drawing is an enlarged view of the fourth drawing B of the present invention. The second peripheral surface 51 is fixed to the first circumferential surface 22 of the rotating shaft 20 so that the sealing member 50 is coupled to the rotating shaft 20 . The rotation of the rotating shaft 20 is fast, and the second circumferential surface 51 and the first circumferential surface 22 are tightly fitted. The sealing member 50 is provided with a fourth abutment 52, and the fourth flange 52 is rotated. The first abutting edge 23 of the shaft 20 and the second abutting edge 32 of the front cover 30 abut against each other. The sealing member 50 protrudes from the annular convex portion 53. The annular convex portion 53 has a loop shape, and the annular convex portion has a ring shape. The portion 53 is received in the first chamber 33, and the annular projection 53 is provided with a portion facing the outer peripheral surface. The second chamber 531 and the first inclined surface 532 are provided with a second inclined surface 533 at the inner circumferential surface. The second inclined surface 533 is provided with an end surface of the annular convex portion 53. The sealing member 50 is provided. There is a fifth abutment 54 , the ring protrusion 53 is provided between the fourth abutment 52 and the fifth abutment 54 , the fifth abutment 54 is abutted against the third abutment 34 , the enclosing member 50 A third inclined surface 55 is formed on the end surface, and the third inclined surface 55 is outwardly oriented. The third inclined surface 55 is away from the annular convex portion 53. The third inclined surface 55 has an angle with the horizontal plane.

Please continue to refer to the sixth, seventh, eighth and ninth, sixth The present invention is a perspective view of the spindle structure of the present invention, the seventh diagram is a top view of the spindle structure of the present invention, the eighth diagram is a cross-sectional view of the seventh diagram of the seventh embodiment of the present invention, and the ninth diagram is an enlarged view of the eighth diagram of the present invention. The rotating shaft 20 is pivotally disposed at the first receiving slot 11 of the body 10. The front cover 30 is coupled to the end surface of the body 10 by a plurality of screwing members 40. The sealing member 50 is coupled to the rotating shaft 20. The enclosing member 50 and the rotating shaft 20 are rapidly rotated by the power, and the annular projection 53 of the enclosing member 50 is received in the first chamber 22.

Please continue to refer to the tenth and eleventh figures, and the tenth figure is the spindle knot of the present invention. A cross-sectional view of a second embodiment, which is an enlarged view of a fourth embodiment of the spindle structure of the present invention, the enclosing member 50 is provided with a sixth abutment 56 toward the outer peripheral surface, the sixth flange 56 is abutted against the outer peripheral surface of the third abutment 354, and a fourth inclined surface 561 is disposed on the outer side of the sixth abutment 56. The fourth inclined surface 561 is connected to the third inclined surface 55, and the fourth inclined surface 561 is coupled with The slope of the third inclined surface 55 is different, and the sealing member 50 is oriented toward the ground. The angle between the fourth inclined surface 561 and the horizontal line is greater than the angle of the third inclined surface 55.

Please continue to refer to the twelfth figure, the twelfth figure is the third spindle structure of the present invention. In the schematic view of the embodiment, the first circumferential surface 22 of the rotating shaft 20 is provided with a ring concave edge 24, and the second circumferential surface 51 of the sealing member 20 is provided with a ring convex surface 57, and the ring convex surface 57 is connected with the ring The concave edge 24 is relatively positive, and the sealing member 20 needs to be disposed on the rotating shaft 20 with an external force, so that the sealing effect between the sealing member 50 and the rotating shaft 20 is further improved. indeed.

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

1. Referring to the ninth figure, the second circumferential surface 51 of the sealing member 50 and the first circumferential surface 22 of the rotating shaft 20 are closely fitted, so that the second circumferential surface 51 of the sealing member 50 There is no gap between the first circumferential surface 22 of the rotating shaft 20, and when the rotating shaft 20 drives the tool to rotate rapidly, each liquid, such as cutting fluid or coolant, is used between the cutter and the workpiece, and the liquid is It does not enter the spindle structure from this gap.

2. The sealing member 50 is rapidly rotated. The third inclined surface 55 of the sealing member 50 is oriented toward the ground. The third inclined surface 55 is such that the liquid contacts the third inclined surface 55 and is inclined by the third inclined surface 55. And the centrifugal force of the rapid rotation is opened, and the probability that the liquid enters the main shaft structure by the gap between the fifth flange 54 and the third flange 34 of the front cover 30 is greatly reduced, and the third slope 55 is reduced. The effect of each liquid entering.

3. There is a machining tolerance between the outer circumferential surface of the rotating shaft 20 and the third receiving groove 31 of the front cover 30, that is, the two are basically loosely fitted, and the liquid is structurally rotated by the rotating shaft 20 The gap between the outer peripheral surface and the third recess 31 of the front cover 30 enters the body 10, and the liquid enters the second chamber 531 at a gap between the fifth flange 54 and the third flange 34. The second chamber 531 is a large space structure, and the liquid enters the second chamber 531 to reduce the speed of entering. When the sealing member 50 rotates rapidly, the liquid entering the second chamber 531 is caused by the first The centrifugal force of rotation of a ramp 532 is again split.

4. If the liquid has passed through the second chamber 531, the end surface of the annular projection 53 of the sealing member 50 is provided with a second inclined surface 533, and the second inclined surface 533 and the first chamber 33 of the front cover 30 are also A large space is formed, and the liquid will also decrease in speed after entering the liquid, and the centrifugal force of the second inclined surface 533 will also open the liquid here.

5. The liquid enters between the rotating shaft 20 and the front cover 30 by the gap between the sealing member 50 and the front cover 30. During the gap, the liquids are obstructed by the third inclined surface 55, the first inclined surface 532 and the second inclined surface 533, and the liquids also need to overcome the gravity to bypass the annular convex portion 53, and the sealing member 50 has the same The effect of liquid entry.

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.

10‧‧‧ Ontology

11‧‧‧First slot

12‧‧‧First screwing

20‧‧‧Rotary axis

21‧‧‧Second capacity

22‧‧‧First week

23‧‧‧First arrival

30‧‧‧ front cover

40‧‧‧ screw fittings

50‧‧‧Fittings

Claims (7)

A spindle structure is used on a machine tool, which includes: a body, the system is disposed on a machine tool, the system is provided with a first cavity, the first cavity is perforated, A plurality of first screwing portions are disposed at the end surface of the body, and the plurality of first screwing portions are annularly arranged with the first pocket as an axis; and a rotating shaft is pivoted to the first pocket of the body a bearing member is disposed between the rotating shaft and the first receiving groove, and the rotating shaft is provided with a second receiving groove at one end thereof, the second receiving groove is provided for the tool, and the rotating shaft is provided with the first circumferential surface And a first cover; the front cover is fixed at the end of the body, the front cover is provided with a third receiving groove, and the third receiving groove is provided with a protruding end of the rotating shaft, the first cover The third receiving groove is provided with a second abutting edge, a first chamber and a third abutting edge, and the second abutting edge is flush with the first abutting edge of the rotating shaft, and the third abutting The edge protrudes more than the second edge from the end surface of the front cover, and the front cover is provided with a plurality of perforations, each of the perforations being aligned with each first screw portion, the number of the perforations being The first screwing portion is the same, the plurality of punching holes are arranged in a ring shape with the third pocket as an axis; the plurality of screwing members are sleeved on each of the perforations of the front cover and screwed to the body At each of the first screwing portions, the front cover is fixed to the end surface of the body; and an insulating member is provided with a second circumferential surface, the second circumferential surface and the rotating shaft The one-sided surface is fixed, so that the sealing member is coupled to the rotating shaft to rotate rapidly with the rotating shaft, and the second circumferential surface and the first circumferential surface are tightly fitted, and the sealing member is provided with a fourth The abutting edge abuts against the first abutting edge of the rotating shaft and the second abutting edge of the front cover, and the sealing member protrudes with a ring convex portion, and the annular convex portion has a loop shape The ring convex portion is disposed in the first housing, and the annular convex portion is provided with a second chamber and a first inclined surface toward the outer circumferential surface, and the annular convex portion is provided with a second inclined surface toward the inner circumferential surface. The second inclined surface is provided with an end surface of the annular convex portion, and the sealing member is provided with a fifth abutting edge. The annular convex portion is provided with a fourth abutting edge and a fifth abutting edge. The third match is against The seal A third inclined surface is formed on the end surface of the device, and the third inclined surface is outwardly oriented. The third inclined surface is away from the annular convex portion, and the third inclined surface has an angle with the horizontal plane. The spindle structure of claim 1, wherein the first pocket is penetrating. The spindle structure of claim 1, wherein the sealing member is provided with a sixth abutting edge toward the outer peripheral surface, the sixth abutting edge abutting against the outer peripheral surface of the third abutting edge, the sixth flange The outer side is provided with a fourth slope. The spindle structure of claim 3, wherein the fourth slope is connected to the third slope. The spindle structure of claim 3, wherein the fourth slope is different from the slope of the third slope. The spindle structure of claim 3, wherein the enclosing member is oriented toward the ground, and the angle between the fourth inclined surface and the horizontal line is greater than the angle of the third inclined surface. The spindle structure of claim 1, wherein the first circumferential surface of the rotating shaft is provided with a ring concave edge, and the second circumferential surface of the sealing member is provided with a ring convex surface, the ring convex surface and the ring The concave edge is relatively positive.