CN212762338U

CN212762338U - Connecting device for machine tool spindle and working head

Info

Publication number: CN212762338U
Application number: CN202021920170.9U
Authority: CN
Inventors: 田多胜
Original assignee: Zonewe Nano Technology Co ltd
Current assignee: Dongguan Zhongwei Lihe Semiconductor Technology Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-03-23
Anticipated expiration: 2030-09-04

Abstract

A connecting device for a machine tool spindle and a working head comprises a box body, an input shaft, a speed change gear pair, an output shaft and a die head; the input shaft and the output shaft are both rotatably arranged on the box body; the input shaft is used for being in transmission with a main shaft of a machine tool; the input shaft drives the output shaft to rotate through the speed change gear pair; one end part of the output shaft in the axial direction is provided with a connecting structure for connecting a high-speed rotating joint, and the other end part is detachably connected with a die head for connecting and fixing a working head; a liquid injection hole is arranged on the output shaft in a penetrating manner, and the liquid injection hole and the output shaft are coaxially arranged; one port of the liquid injection hole is communicated with the high-speed rotating joint, and the other port of the liquid injection hole is communicated with the cooling flow passage of the working head. The utility model discloses not only can realize the variable speed between lathe main shaft and the working head, still accessible output axial injects the coolant liquid in the working head, has simple structure, reasonable in design's advantage.

Description

Connecting device for machine tool spindle and working head

Technical Field

The utility model belongs to the technical field of the lathe technique and specifically relates to a connecting device for lathe main shaft and working head.

Background

The machine tool is a common machining device in the existing modernization, and the existing machine tool usually drives a working head to rotate by a high-speed rotating main shaft so as to finish corresponding operation; the engraving and milling machine and the milling machine are used as two common machine tool devices, a main shaft and a working head of the engraving and milling machine are in a direct connection mode, and then the main shaft can drive the engraving and milling working head or the milling working head to rotate fast to complete corresponding operation, taking the milling machine as an example: in the grinding process, because the grinding working head continuously rubs with the surface of a workpiece, a large amount of heat is generated, and the grinding working head and the surface of the workpiece need to be continuously supplied with cooling liquid for cooling.

Therefore, the prior art is to be improved and enhanced

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a connecting device for lathe main shaft and working head to problem among the above-mentioned prior art, the purpose is integrated annotate the liquid structure in this connecting device, simultaneously with the overhead cooling channel intercommunication that the shaping goes out of external connection's work, and then can realize that this connecting device drive working head can be lastingly stable when rotatory pour into the coolant liquid into in the cooling channel that the overhead shaping of workstation goes out and cool off.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

a connecting device for a machine tool spindle and a working head comprises a box body, an input shaft, a speed change gear pair, an output shaft and a die head; the input shaft and the output shaft are both rotatably arranged on the box body; the input shaft is used for being in transmission with a main shaft of a machine tool; the input shaft drives the output shaft to rotate through the speed change gear pair; one end part of the output shaft in the axial direction is provided with a connecting structure for connecting a high-speed rotating joint, and the other end part is detachably connected with a die head for connecting and fixing a working head; a liquid injection hole is arranged on the output shaft in a penetrating manner, and the liquid injection hole and the output shaft are coaxially arranged; one port of the liquid injection hole is communicated with the high-speed rotating joint, and the other port of the liquid injection hole is communicated with the cooling flow passage of the working head.

As a further elaboration of the above technical solution:

in the technical scheme, a partition plate is horizontally arranged in the middle of the box body, and the partition plate divides the box body into a gear cavity for accommodating the speed change gear pair and an accommodating cavity for accommodating the high-speed rotary joint; the speed change gear pair comprises a driving gear and a driven gear which are meshed with each other; the driving gear is sleeved on the input shaft and is in key connection with the input shaft; the driven gear is sleeved on the output shaft and is in key connection with the output shaft.

In the above technical solution, the number of teeth of the driving gear is smaller than the number of teeth of the driven gear.

In the technical scheme, the upper part and the lower part of the output shaft are respectively and rotatably installed on the partition plate and the bottom plate of the box body through oil seal bearings; two first annular grooves are formed in the side wall of the output shaft, and a first snap spring is arranged in each of the two first annular grooves; the two first clamp springs are respectively positioned on two sides of the partition plate.

In the above technical solution, the connection structure is located in the accommodation cavity and is an annular portion integrally formed with the output shaft; the outer diameter of the annular portion is larger than that of the output shaft; the middle part of the annular part is provided with a threaded hole; the threaded hole and the liquid injection hole are coaxially arranged, and the inner diameter of the threaded hole is larger than that of the liquid injection hole; and a pipeline hole for the liquid injection pipeline to penetrate into the accommodating cavity is further formed in the top plate of the box body, and the pipeline hole and the threaded hole are arranged oppositely.

In the technical scheme, the end part of the output shaft, which penetrates out of the box body, is provided with an external thread; a stepped hole is formed in the middle of the die head; the upper part of the stepped hole is provided with an internal thread matched with the external thread; the stepped hole is communicated with the liquid injection hole; the die head is formed with a fixing structure matched with the connecting end part of the working head.

In the technical scheme, the top end of the input shaft penetrates out of the top of the box body, and the upper portion, the lower portion and the bottom end of the input shaft are rotatably installed on the top plate of the box body, the partition plate and the bottom plate of the box body through oil seal bearings respectively.

The utility model has the advantages that firstly, the input shaft is in transmission with the main shaft of the machine tool, the output shaft is in transmission with the working head, and the input shaft and the output shaft are in transmission through the speed change gear pair, thereby realizing the speed change adjusting function between the main shaft and the working head of the machine tool; secondly, after the external high-speed rotating joint is fixed to the output shaft, cooling liquid can be continuously injected into the cooling channel of the working head through a liquid injection hole in the middle of the output shaft, so that the function of cooling the working head and a machining workpiece while driving the working head to rotate is realized; thirdly, through the different working heads of detachably installation die head can the adaptation difference, improved the utility model discloses a commonality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numbers in the figures are respectively: 1. a box body; 2. an input shaft; 3. a speed change gear pair; 4. an output shaft; 5. a die head; 6. a connecting structure; 8. a liquid injection hole; 9. a partition plate; 10. a driving gear; 11. a driven gear; 12. an oil seal bearing; 13. a threaded hole; 14. a pipe bore; 15. a stepped hole; 16. an external thread; 17. an internal thread; 18. a shunt channel; 19. a guiding notch; 20. a first clamp spring; 21. a second clamp spring; A. a high-speed rotary joint; B. and a liquid injection pipeline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1 exemplifies the embodiment of the connecting device for the machine tool spindle and the working head, referring to fig. 1, the connecting device for the machine tool spindle and the working head comprises a box body 1, an input shaft 2, a speed change gear pair 3, an output shaft 4 and a die head 5. The box body is cuboid and is formed by connecting a top plate, four side plates and a bottom plate through bolts. The input shaft 2 and the output shaft 4 are both rotatably arranged on the box body 1; the input shaft 2 is used for transmission with a main shaft of a machine tool. The input shaft 2 drives the output shaft 4 to rotate through the speed change gear pair 3; one axial end part of the output shaft 4 is provided with a connecting structure 6 for connecting a high-speed rotating joint A, and the other end part is detachably connected with a die head 5 for connecting and fixing a working head; in this embodiment, the high-speed rotating joint a is purchased from a standard part on the market. A liquid injection hole 8 is formed in the output shaft 4 in a penetrating mode, and the liquid injection hole 8 and the output shaft 4 are arranged coaxially; one port of the liquid injection hole 8 is used for being communicated with the high-speed rotating joint A, and the other port of the liquid injection hole is used for being communicated with the cooling flow passage of the working head.

The utility model discloses a theory of operation does: firstly, sleeving a driven synchronous belt wheel on the end part of the input shaft 2, and forming a belt transmission structure with a driving synchronous belt wheel sleeved on a main shaft of a machine tool through a synchronous belt; then, the main shaft of the machine tool drives the input shaft 2 to rotate, and the input shaft 2 drives the output shaft 4 to rotate through the speed change gear pair 3; finally, the output shaft 4 drives the working head fixed on the die head 5 to rotate; in the process, an external pump fills cooling liquid into the liquid injection hole 8 through the high-speed rotating joint A, the cooling liquid in the liquid injection hole 8 flows into a cooling channel of the working head again, and the cooling liquid flows out of the cooling channel of the working head to simultaneously cool the working head and a workpiece to be machined.

Further, the middle part level of box 1 is provided with baffle 9, baffle 9 will separate in the box 1 and be used for the holding the gear chamber and the holding of change gear pair 3 high-speed rotary joint A's holding chamber, general high-speed rotary joint A hides in the box 1, can be right high-speed rotary joint A with output shaft 4's connection plays fine guard action, has improved the utility model discloses a stability. The speed change gear pair 3 comprises a driving gear 10 and a driven gear 11 which are meshed with each other; the driving gear 10 is sleeved on the input shaft 2 and is in key connection with the input shaft 2; the driven gear 11 is sleeved on the output shaft 4 and is in key connection with the output shaft 4; the number of teeth of driving gear 10 is less than driven gear 11's number of teeth, consequently, the driving gear 10 with the change gear pair 3 that driven gear 11 constitutes is reduction gear pair, its during operation: firstly, the input shaft 2 drives the driving gear 10 to rotate; then, the driving gear 10 drives the driven gear 11 to rotate, so as to form a primary gear speed reduction transmission structure; finally, the driven gear 11 drives the output shaft 4 to rotate synchronously.

Preferably, the upper part and the lower part of the output shaft 4 are respectively rotatably mounted on the partition plate 9 and the bottom plate of the box body 1 through oil-sealed bearings 12, wherein the oil-sealed bearings 12 are bearings provided with oil seals in the prior art; two first annular grooves are formed in the side wall of the output shaft 4, and a first snap spring 20 is arranged in each of the two first annular grooves; the two first clamp springs 20 are respectively located on two sides of the partition plate 9 to limit the input shaft 2 to be separated from the partition plate 9 along the axial direction.

Preferably, the connecting structure 6 is located in the accommodating cavity and is an annular part integrally formed with the output shaft 4; the outer diameter of the annular portion is larger than the outer diameter of the output shaft 4; in the embodiment, the high-speed rotary joint a is a KSH4-M5 model of jiaxin pneumatic hydraulic fittings limited, east guan city, and the middle part of the annular part is provided with a threaded hole 13, and the threaded hole 13 is screwed and fixed with the threaded joint of the high-speed rotary joint a. The threaded hole 13 is coaxial with the liquid injection hole 8, and the inner diameter of the threaded hole 13 is larger than that of the liquid injection hole 8; still be equipped with on the roof of box 1 and supply to annotate liquid pipeline B to penetrate the pipe orifice 14 of holding chamber, the liquid pipeline B of annotating of outside pump machine certainly the roof of box 1 penetrates behind the holding chamber with high-speed rotary joint A is connected fixedly, consequently will pipe orifice 14 set to with annotate liquid pipeline B interference fit's mounting means, can be through fixing it is right to annotate indirect realization of liquid pipeline B's mode high-speed rotary joint A's support is fixed, further improves the utility model discloses stability during operation. The duct hole 14 is disposed opposite to the threaded hole 13.

Preferably, two second annular grooves are formed in the side wall of the input shaft 2, two second snap springs 21 are respectively arranged on the two second annular grooves, and the two second snap springs 21 are respectively located on the upper side and the lower side of the partition plate 9 so as to limit the input shaft 2 from axially separating from the partition plate 9.

Further, an external thread 16 is arranged at the end part of the output shaft 4 penetrating out of the box body 1; a stepped hole 15 is formed in the middle of the die head 5; the upper aperture of the stepped hole 15 is larger than that of the lower portion, and an internal thread 17 matched with the external thread is formed at the upper portion of the stepped hole 15; the stepped hole 15 is communicated with the liquid injection hole 8; the die head 5 is formed with a fixing structure matched with the connecting end part of the working head; in this embodiment, the die head 5 is cylindrical, the fixing structure is that two notches 19 are symmetrically arranged at the top of the die head 5, the horizontal cross sections of the two notches 19 are both D-shaped, when the fixing structure is installed, the connecting device at the top of the working head is sleeved on the die head 5, and meanwhile, two engaging parts are formed at the top of the connecting device and are respectively clamped in one notch 19, so that the working head can synchronously rotate along with the die head 15; in addition, the cooling channel of the working head is also communicated with the stepped hole 15, so that the cooling liquid in the liquid injection hole 8 is injected into the cooling channel of the working head through the stepped hole 15.

Furthermore, a plurality of branch channels 18 are formed at the bottom of the die head 5, and the stepped hole 15 is communicated with the cooling channel of the working head through the plurality of branch channels 18.

Preferably, the top end of the input shaft 2 penetrates out of the top of the box body 1, and the upper part, the lower part and the bottom end of the input shaft 2 are rotatably installed on the top plate of the box body 1, the partition plate 9 and the bottom plate of the box body 1 through oil seal bearings 12 respectively.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A connecting device for a machine tool spindle and a working head is characterized by comprising a box body, an input shaft, a speed change gear pair, an output shaft and a die head; the input shaft and the output shaft are both rotatably arranged on the box body; the input shaft is used for being in transmission with a main shaft of a machine tool; the input shaft drives the output shaft to rotate through the speed change gear pair; one end part of the output shaft in the axial direction is provided with a connecting structure for connecting a high-speed rotating joint, and the other end part is detachably connected with a die head for connecting and fixing a working head; a liquid injection hole is arranged on the output shaft in a penetrating manner, and the liquid injection hole and the output shaft are coaxially arranged; one port of the liquid injection hole is communicated with the high-speed rotating joint, and the other port of the liquid injection hole is communicated with the cooling flow passage of the working head.

2. The connecting device for the spindle and the working head of the machine tool as claimed in claim 1, wherein a partition board is horizontally arranged in the middle of the box body, and the partition board divides the inside of the box body into a gear cavity for accommodating the transmission gear pair and an accommodating cavity for accommodating the high-speed rotary joint; the speed change gear pair comprises a driving gear and a driven gear which are meshed with each other; the driving gear is sleeved on the input shaft and is in key connection with the input shaft; the driven gear is sleeved on the output shaft and is in key connection with the output shaft.

3. A connection device for a spindle and a head of a machine tool according to claim 2, wherein the number of teeth of the driving gear is smaller than that of the driven gear.

4. The connecting device for the main shaft and the working head of the machine tool as claimed in claim 2, wherein the upper part and the lower part of the output shaft are rotatably mounted on the partition plate and the bottom plate of the box body through oil-sealed bearings respectively; two first annular grooves are formed in the side wall of the output shaft, and a first snap spring is arranged in each of the two first annular grooves; the two first clamp springs are respectively positioned on two sides of the partition plate.

5. A connecting device for a machine tool spindle and a working head as claimed in claim 4, wherein the connecting structure is located in the accommodating cavity and is an annular part integrally formed with the output shaft; the outer diameter of the annular portion is larger than that of the output shaft; the middle part of the annular part is provided with a threaded hole; the threaded hole and the liquid injection hole are coaxially arranged, and the inner diameter of the threaded hole is larger than that of the liquid injection hole; and a pipeline hole for the liquid injection pipeline to penetrate into the accommodating cavity is further formed in the top plate of the box body, and the pipeline hole and the threaded hole are arranged oppositely.

6. The connecting device for the main shaft and the working head of the machine tool as claimed in any one of claims 1 to 5, wherein the end of the output shaft, which penetrates out of the box body, is provided with external threads; a stepped hole is formed in the middle of the die head; the upper part of the stepped hole is provided with an internal thread matched with the external thread; the stepped hole is communicated with the liquid injection hole; the die head is formed with a fixing structure matched with the connecting end part of the working head.

7. The connecting device for the main shaft and the working head of the machine tool as claimed in claim 2, wherein the top end of the input shaft penetrates out of the top of the box body, and the upper part, the lower part and the bottom end of the input shaft are rotatably mounted on the top plate of the box body, the partition plate and the bottom plate of the box body through oil seal bearings respectively.