CN110842224A

CN110842224A - High-speed large-torque direct-connected spindle structure

Info

Publication number: CN110842224A
Application number: CN201911179744.3A
Authority: CN
Inventors: 李维; 张冠顺; 葛建国; 罗永刚
Original assignee: Jiangsu Ford Machinery Polytron Technologies Inc
Current assignee: Jiangsu Ford Machinery Polytron Technologies Inc
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-02-28

Abstract

The invention discloses a high-speed large-torque direct-connected main shaft structure, relates to the technical field of main shafts, and solves the problems that the existing main shaft is lack of a cooling structure, the main shaft is easy to extend due to temperature rise during high-speed operation, and the like, and the machining precision is influenced. The cutting device comprises a housing, the casing internal rotation is connected with the dabber, dabber one end centre gripping cutter, cutter one end are kept away from to the casing and are equipped with the hydro-cylinder of forging a knife, are equipped with the piece of forging a knife of centre gripping or change cutter under the hydro-cylinder effect of forging a knife in the dabber, still be equipped with a round cooling cylinder between casing and the dabber, the cooling cylinder is spliced into by two the same semicylindrical, and its inner circle has seted up round circle heliciform groove, is equipped with the cooling tube who distributes along the groove. The cooling of main shaft has been realized through simple and convenient structure, and the intensification influence that brings when reducing high-speed main shaft improves the machining precision to avoid the direct contact of coolant liquid and casing through cooling tube, in order to improve main shaft life-span, reduction in production cost's effect.

Description

High-speed large-torque direct-connected spindle structure

Technical Field

The invention relates to the technical field of main shafts, in particular to a high-speed large-torque direct-connected main shaft structure.

Background

The main shaft is a shaft that receives power from an engine or a motor and transmits it to other members. The principal axis, also known as the "optical axis", is the abbreviation for the "principal optical axis", having a symmetrical diameter in the optical train. For example, the major axis of the sphere is a straight line passing through the center of the mirror surface and perpendicular to the mirror surface. The principal axis of a lens or optical axis optical train is the line connecting the centers of the lens faces.

However, the conventional spindle lacks a cooling structure, and the spindle tends to be elongated due to temperature rise during high-speed operation, which affects machining accuracy.

Disclosure of Invention

The invention aims to provide a high-speed large-torque direct-connected main shaft structure, which can realize cooling of a main shaft through a simple structure, reduce the influence of temperature rise caused by high-speed main shaft and improve the processing precision.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a high-speed big moment of torsion associated mode main shaft structure, includes the casing, the casing internal rotation is connected with the dabber, dabber one end centre gripping cutter, cutter one end are kept away from to the casing is equipped with the hydro-cylinder of forging a knife, are equipped with the piece of forging a knife of centre gripping or change cutter under the hydro-cylinder effect of forging a knife in the dabber, still be equipped with round cooling cylinder between casing and the dabber, cooling cylinder splices into by two the same semicylindrical, and its inner circle has seted up round circle heliciform groove, is equipped with the cooling pipeline along the groove.

Furthermore, one end of the mandrel, which is far away from the cutter, is connected with a coupler, and the mandrel is connected with an output shaft of the motor through the coupler.

Furthermore, the motor is cooled in a liquid cooling mode, and the outlet of the cooling pipe is communicated with the cooling pipeline.

Furthermore, a liquid inlet and a liquid outlet are arranged at two ends of the spiral groove on the cooling cylinder in a penetrating manner, the axes of the liquid inlet and the liquid outlet are arranged on the contact surfaces of the two halves of the cooling cylinder, and the shell is provided with an outer connecting hole corresponding to the positions of the liquid inlet and the liquid outlet.

Furthermore, two ends of the cooling pipe are respectively positioned at the liquid inlet and the liquid outlet, and are provided with internal threads, and an external pipeline enters from the external hole and is in threaded connection with the end part of the cooling pipe.

Furthermore, one end of the mandrel, which is close to the cutter, is also connected with a waterproof cover, one end of the waterproof cover, which is far away from the cutter, is connected with a circle of water retaining rings which are concentrically arranged, and the shell is provided with an annular groove matched with the water retaining rings.

Furthermore, the thickness of the water retaining ring with the larger diameter is smaller than that of the water retaining ring with the smaller diameter.

Furthermore, the shell is communicated with a gas path, the gas path comprises an inner ring arranged on the inner circumferential surface of the shell, an inlet arranged between the inner ring and the outer circumferential surface of the shell, and a plurality of outlets arranged at one end of the inner ring facing the water retaining ring, and the opening direction of the tail ends of the outlets faces the outer side of the bottom of each annular groove from the inner side of the bottom of the annular groove.

Further, outlets further from the inlet are more densely distributed than outlets closer to the inlet.

In conclusion, the invention has the following beneficial effects:

through the cooling cylinder and the cooling pipeline, cooling liquid is conveniently introduced to cool the main shaft, the temperature rise influence caused by high-speed main shaft is reduced, the processing precision is improved, the processing is convenient, the direct contact between the cooling liquid and the shell is avoided through the cooling pipeline, and only the cooling pipeline needs to be replaced during replacement, so that the service life of the main shaft is prolonged, and the production cost is reduced; through the arrangement of the waterproof cover and the air path, the possibility that various liquids or solids enter the main shaft is reduced, and the entered liquids can be discharged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the air passage part in the present invention;

fig. 3 is a diagram of the outlet distribution in the present invention.

In the figure, 1, a housing; 11. an outer connecting hole; 12. an annular groove; 13. an inner ring; 14. an inlet; 15. an outlet; 2. a mandrel; 21. a coupling; 3. a cutter beating oil cylinder; 4. a cooling cylinder; 41. a cooling duct; 42. a liquid inlet; 43. a liquid outlet; 5. a waterproof cover; 51. and (5) a water retaining ring.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.

The utility model provides a high-speed big moment of torsion associated mode main shaft structure, as shown in figure 1, including casing 1, rotate through front bearing frame subassembly and rear bearing frame subassembly in the casing 1 and be connected with dabber 2, 2 one end centre gripping cutters of dabber, casing 1 keeps away from cutter one end and is equipped with the cylinder of forging a knife 3, is equipped with the piece of forging a knife of centre gripping or change cutter under the cylinder of forging a knife 3 effect in the dabber 2, and dabber 2 keeps away from cutter one end and is connected with shaft coupling 21, and dabber 2 passes through shaft coupling 21 and connects in. The specific structure is the prior art and will not be described herein.

As shown in fig. 1, a circle of cooling cylinder 4 is further arranged between the casing 1 and the mandrel 2, the cooling cylinder 4 is formed by splicing two identical semi-cylindrical shapes, the casing 1 and the cooling cylinder 4 are fixed by screws, a circle of spiral grooves are formed in the inner ring of the cooling cylinder 4, and cooling pipelines 41 distributed along the grooves are arranged in the grooves. Cooling tube 41 is through each bearing position on dabber 2 to let in the coolant liquid and cool off the main shaft, the intensification influence that brings when reducing high-speed main shaft improves the machining precision, and avoids the direct contact of coolant liquid and casing through cooling tube, only needs to change cooling tube during the change, in order to improve the main shaft life-span, reduction in production cost.

As shown in fig. 1, a liquid inlet 42 and a liquid outlet 43 located at two ends of the spiral groove are further penetrated through the cooling cylinder 4, the axes of the liquid inlet 42 and the liquid outlet 43 are located on the contact surface of the two halves of the cooling cylinder 4, and an external connection hole 11 is penetrated through the position of the housing 1 corresponding to the liquid inlet 42 and the liquid outlet 43; in this embodiment, the liquid inlet 42 is located at one end of the cooling cylinder 4 far away from the cutter, and the liquid outlet 43 is located at one end of the cooling cylinder 4 near the cutter. The motor adopts the liquid cooling mode cooling, and its cooling tube export 15 and cooling tube 41 intercommunication, and the coolant liquid passes through the motor earlier, cools down to the motor, gets into inlet 42 from external hole 11 again to flow along spiral helicine cooling tube, flow and retrieve from liquid outlet 43 at last, and the liquid cooling structure of motor belongs to prior art, does not do too much repeated description here.

As shown in fig. 1, two ends of the cooling pipe are respectively located at the liquid inlet 42 and the liquid outlet 43, and two ends of the cooling pipe are provided with internal threads, an external pipeline enters from the external hole 11 and is in threaded connection with the end of the cooling pipe, an external pipeline at the liquid inlet 42 is communicated to the cooling liquid outlet 15 at the motor, and an external pipeline at the liquid outlet 43 is communicated to the cooling liquid recovery position.

As shown in fig. 2, one end of the mandrel 2 close to the cutter is further connected with a waterproof cover 5, one end of the waterproof cover 5 far away from the cutter is connected with a circle of concentrically arranged water retaining rings 51, and the shell 1 is provided with an annular groove 12 matched with the water retaining rings 51; the thickness of the water retaining ring 51 with the larger diameter is smaller than that of the water retaining ring 51 with the smaller diameter, and the thickness direction of the water retaining ring is along the length direction of the main shaft.

As shown in fig. 2, the casing 1 is communicated with a gas path, the gas path includes an inner ring 13 formed on the inner circumferential surface of the casing 1, an inlet 14 formed between the inner ring 13 and the outer circumferential surface of the casing 1, and a plurality of outlets 15 formed at one end of the inner ring 13 facing the water retaining ring 51, and the opening direction of the tail ends of the outlets 15 is from the inner side of the groove bottom of each annular groove 12 to the outer side of the groove bottom; the shell 1 comprises a fixing ring fixed through bolts, an inner ring 13, an outlet 15 and an annular groove 12 are arranged on the inner side of the fixing ring, the possibility that various liquids or solids enter the main shaft is reduced, and the entered liquids can be effectively discharged.

As shown in fig. 3, in order to make the blowing air more uniform, the outlets 15 far from the inlet 14 are more densely distributed than the outlets 15 near the inlet 14. In this embodiment, the water retaining ring 51 has two rings, the outlets 15 include 5 outlets respectively located in the corresponding annular grooves 12, that is, 10 outlets in total, 3 outlets 15 are located on the side of the axis far from the inlet 14, and 2 outlets 15 are located on the side of the axis far from the inlet 14.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.

Claims

1. A high-speed big moment of torsion associated mode main shaft structure, characterized in that: including casing (1), casing (1) internal rotation is connected with dabber (2), dabber (2) one end centre gripping cutter, cutter one end is kept away from in casing (1) and is equipped with and beats sword hydro-cylinder (3), is equipped with the piece of beating the sword of centre gripping or change cutter under the hydro-cylinder effect of beating the sword in dabber (2), still be equipped with round cooling cylinder (4) between casing (1) and dabber (2), cooling cylinder (4) are spliced into by two the same semicylindrical, and its inner circle has seted up round circle heliciform groove, is equipped with cooling tube (41) along the groove distribution in the inslot.

2. The high-speed large-torque direct-connected spindle structure according to claim 1, wherein: one end of the mandrel (2) far away from the cutter is connected with a coupler (21), and the mandrel (2) is connected to an output shaft of the motor through the coupler (21).

3. The high-speed large-torque direct-connected spindle structure according to claim 2, wherein: the motor is cooled in a liquid cooling mode, and an outlet (15) of a cooling pipe of the motor is communicated with a cooling pipeline (41).

4. The high-speed large-torque direct-connected spindle structure according to claim 3, wherein: the cooling cylinder (4) is further provided with a liquid inlet (42) and a liquid outlet (43) which are positioned at two ends of the spiral groove along the cooling cylinder, the axes of the liquid inlet (42) and the liquid outlet (43) are positioned on the contact surfaces of the two halves of the cooling cylinder (4), and the shell (1) is provided with an outer connecting hole (11) corresponding to the positions of the liquid inlet (42) and the liquid outlet (43).

5. The high-speed large-torque direct-connected spindle structure according to claim 4, wherein: the two ends of the cooling pipe are respectively positioned at the liquid inlet (42) and the liquid outlet (43), the two ends of the cooling pipe are provided with internal threads, and an external pipeline enters from the external hole (11) and is in threaded connection with the end part of the cooling pipe.

6. The high-speed large-torque direct-connected spindle structure according to claim 1, wherein: one end, close to the cutter, of the mandrel (2) is further connected with a waterproof cover (5), one end, far away from the cutter, of the waterproof cover (5) is connected with a circle of water retaining rings (51) which are concentrically arranged, and annular grooves (12) matched with the water retaining rings (51) are formed in the shell (1).

7. The high-speed large-torque direct-connected spindle structure according to claim 6, wherein: the thickness of the water retaining ring (51) with the larger diameter is smaller than that of the water retaining ring (51) with the smaller diameter.

8. The high-speed large-torque direct-connected spindle structure according to claim 6 or 7, wherein: the shell (1) is communicated with a gas path, the gas path comprises an inner ring (13) arranged on the inner circumferential surface of the shell (1), an inlet (14) arranged between the inner ring (13) and the outer circumferential surface of the shell (1), and a plurality of outlets (15) of the inner ring (13) facing one end of the water retaining ring (51), and the opening direction of the tail ends of the outlets (15) faces the outer side of the bottom of each annular groove (12).

9. The high-speed large-torque direct-connected spindle structure according to claim 8, wherein: the outlets (15) far from the inlet (14) are distributed more densely than the outlets (15) close to the inlet (14).