Integrated multi-head power tool apron

Abstract

The utility model discloses an integrated multi-head power tool apron which comprises a transmission shaft assembly, a plurality of main shaft assemblies and an integrated box body, the upper portion of the box body is provided with a plurality of main shaft assembling cavities allowing the main shaft assemblies to be installed in the box body, each main shaft assembly is independently assembled in the corresponding main shaft assembling cavity, and the lower portion of the box body is provided with a transmission assembling cavity allowing the transmission shaft assembly to be installed in. The transmission assembly cavity is communicated with the main shaft assembly cavity in the box body; and the transmission shaft assembly and the plurality of main shaft assemblies in the box body are in transmission fit. The integrated box body is adopted, corresponding assembly steps are reduced, the assembly precision is guaranteed, and when the box body is machined, the machining precision in the box body can be guaranteed, so that support is provided for the follow-up assembly precision of the transmission shaft assembly and the main shaft assembly; the integrated box body does not have an assembly gap between the box bodies, cutting liquid, oil mist and the like outside the box body cannot enter the box body, a rotating part in the box body is effectively protected, and the service life of the rotating part is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool holder technology, specifically relating to an integrated multi-head power tool holder. Background Technology

[0002] The power tool holder is one of the core cutting components of a turret milling and turning machine tool. It can be used to clamp various machining tools to achieve corresponding machining functions such as milling, drilling, and tapping. Currently, most power tool holders consist of two separate housings: one for assembling the spindle assembly and the other for assembling the drive shaft assembly. In actual use, gaps may appear between the housings. Although seals can be used to seal them, leakage may still occur, causing the lubricating grease inside the housing to decompose and fail. The failure of the lubricating grease will cause severe wear on the rotating parts inside the housing (the meshing transmission between the spindle and drive shaft, and the bearings on the spindle and drive shaft), thus affecting the normal operation of the power tool holder. Furthermore, the use of two separate housings has a certain impact on the assembly accuracy between the internal components of the tool holder. Therefore, further improvements can be made to the sealing capability and assembly accuracy of the power tool holder to overcome the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an integrated multi-head power tool holder with good sealing ability and improved assembly accuracy.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The integrated multi-head power tool holder includes a drive shaft assembly, multiple spindle assemblies, and a one-piece housing.

[0006] The upper part of the housing has multiple spindle assembly cavities for installing spindle assemblies. Each spindle assembly cavity independently assembles one spindle assembly.

[0007] The lower part of the housing is provided with a transmission assembly cavity for the transmission shaft assembly to be installed, and the transmission assembly cavity is connected to the main shaft assembly cavity inside the housing;

[0008] The drive shaft assembly and multiple main shaft assemblies located inside the housing form a transmission connection.

[0009] As a further embodiment, the transmission position between the drive shaft assembly and the main shaft assembly is located at the bottom of the housing.

[0010] As a further implementation, an extension cylinder extends downward from the center of the bottom of the housing, communicating with the interior of the housing, and the aforementioned transmission assembly cavity is formed inside the extension cylinder.

[0011] As a further embodiment, the spindle assembly includes a rotating spindle with its lower end at the bottom of the spindle assembly cavity and its upper end above the housing, and a first gear cover, a driven gear, a first bearing component, a lock nut, a second bearing component, a first bearing cover, and an ER nut assembled on the rotating spindle from bottom to top;

[0012] The first gear cover is assembled on the lower end face of the rotating main shaft, and the first gear cover presses down on the driven gear.

[0013] The upper part of the second bearing component protrudes above the housing, and the first bearing cap is fixedly connected to the housing, forming a cap on the upper part of the second bearing component.

[0014] As a further implementation, the lower surface of the first bearing cover is provided with a mating surface that fits against the upper end face of the housing, and a stepped surface that abuts against the outer circumferential wall and upper end face of the second bearing component. A first skeleton oil seal is assembled inside the first bearing cover and between it and the outer circumference of the rotating main shaft.

[0015] As a further embodiment, the drive shaft assembly includes a drive shaft, a second gear cover, a drive gear, a third bearing component, a fourth bearing component, and a second bearing cover.

[0016] The upper end of the drive shaft extends to the bottom side of the main shaft assembly cavity, located between multiple main shaft assemblies; the lower end of the drive shaft is located below the housing body.

[0017] The second gear cover is assembled on the upper end face of the drive shaft and presses against the upper end of the drive gear. The third bearing component and the fourth bearing component are rotatably assembled on the drive shaft in the transmission assembly cavity. The second bearing cover is assembled on the housing and forms a pressure against the lower part of the fourth bearing component.

[0018] As a further implementation, a second skeleton oil seal is assembled between the second gear cover and the outer periphery of the drive shaft.

[0019] As a further implementation, a bearing washer is fitted on the drive shaft between the third bearing component and the fourth bearing component.

[0020] As a further implementation, the housing is equipped with multiple water outlets, with each water outlet corresponding to a spindle assembly;

[0021] The lower part of the tank has multiple water inlet channels that are not on the same side of the tank, and these multiple water inlet channels are interconnected with multiple water outlets.

[0022] As a further implementation scheme, the inner walls of the spindle assembly cavity and the transmission assembly cavity are formed into a multi-step shape that decreases in size towards the bottom.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This application employs a one-piece housing. The drive shaft assembly and spindle assembly only need to be assembled into their corresponding positions within the housing, reducing assembly steps and ensuring assembly accuracy. Furthermore, the one-piece housing ensures high machining accuracy during its processing, thus supporting the subsequent assembly accuracy of the drive shaft assembly and spindle assembly. The one-piece housing eliminates assembly gaps between housing sections, preventing external cutting fluids and oil mists from entering the housing. This effectively protects the rotating components inside, ensuring they operate in a stable and lubricated environment, thereby extending their service life. Additionally, the one-piece housing enhances the overall strength and rigidity of the power tool holder, supporting its stable operation. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the side planar structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the internal cross-section of the present invention;

[0029] Figure 4 This is a bottom view of the structure of this utility model;

[0030] In the attached diagram, the markings are as follows:

[0031] 1. Drive shaft assembly; 2. Main shaft assembly; 3. Housing; 4. Main shaft assembly cavity; 5. Transmission assembly cavity; 6. Extension cylinder; 7. Rotating main shaft; 8. First gear cover; 9. Driven gear; 10. First bearing assembly; 11. Locking nut; 12. Second bearing assembly; 13. First bearing cover; 14. ER nut; 15. Mating surface; 16. Stepped surface; 17. First skeleton oil seal; 18. Drive shaft; 19. Second gear cover; 20. Transmission gear; 21. Third bearing assembly; 22. Fourth bearing assembly; 23. Second bearing cover; 24. Locating pin; 25. Transmission flat sleeve; 26. Second skeleton oil seal; 27. Bearing washer; 28. Water outlet; 29. ​​Water inlet channel. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-4 The integrated multi-head power tool holder includes a drive shaft assembly 1, multiple spindle assemblies 2, and an integrated housing 3. The tool holder shown in the attached drawings of this application includes a drive shaft assembly 1 and two spindle assemblies 2. The drive shaft assembly 1 drives the rotation of the two spindle assemblies 2. That is, the drive shaft assembly 1 is located at the bottom, and the two spindle assemblies 2 are arranged side by side at the top.

[0034] The upper part of the housing 3 is provided with two spindle assembly cavities 4 for the spindle assembly 2 to be installed in the housing 3. Each spindle assembly cavity 4 independently assembles a spindle assembly 2. That is, the adjacent spindle assemblies 2 are not related to each other except when they are driven together with the transmission shaft assembly 1. They are arranged independently, which can meet the assembly and replacement of a single spindle assembly 2. Compared with the previous structure, it is more convenient to use.

[0035] The lower part of the housing 3 is provided with a transmission assembly cavity 5 for the transmission shaft assembly 1 to be installed. The transmission assembly cavity 5 is connected to the main shaft assembly cavity 4 inside the housing 3. The transmission shaft assembly 1 can also be assembled in the transmission assembly cavity 5 as a whole, which ensures the assembly accuracy and also brings corresponding convenience of assembly and disassembly.

[0036] The drive shaft assembly 1 and multiple main shaft assemblies 2 located inside the housing 3 form a transmission engagement, and the transmission engagement position is located within the housing 3, thus providing effective protection.

[0037] In this application, the integrated housing 3 eliminates the need for two separate housings. This is in contrast to the current practice where the drive shaft assembly 1 is assembled in the drive housing and the spindle assembly 2 is assembled in the spindle housing, which is a separate housing composed of the spindle housing and the drive housing. Using an integrated housing 3 reduces the number of assembly steps, ensures assembly accuracy, and guarantees the sealing performance within the housing 3.

[0038] When a split housing is used, there are certain gaps between the housings. Although seals can be used to seal them, the presence of gaps still allows cutting fluid, oil mist, and other substances from outside the housing to enter the housing. These highly penetrating substances can easily enter the housing, causing the lubricating grease inside the housing to decompose and fail. The failure of the lubricating grease will cause severe wear on the rotating parts inside the housing, thus affecting the normal operation of the power tool holder and ultimately leading to the damage of the power tool holder.

[0039] When a split housing is used, there are multiple assembly steps, such as assembling the drive shaft assembly into the drive housing, assembling the spindle assembly into the spindle housing, and assembling the drive housing and the spindle housing. Each assembly step inevitably involves certain assembly errors, which affect the assembly accuracy of the bearing assembly and the transmission between the spindle and the drive shaft inside the housing. Therefore, when the assembly accuracy cannot be effectively guaranteed, the possibility of wear and rotational failure of rotating parts inside the housing increases.

[0040] This application employs a one-piece housing. The drive shaft assembly and spindle assembly only need to be assembled into their corresponding positions within the housing, reducing assembly steps and ensuring assembly accuracy. Furthermore, compared to a one-piece housing, the machining accuracy within the housing itself is also guaranteed, thus supporting the subsequent assembly accuracy of the drive shaft assembly and spindle assembly. Moreover, the absence of assembly gaps between housing sections prevents cutting fluids and oil mists from entering the housing, effectively protecting the rotating components inside and ensuring they operate in a stable, lubricated environment, thereby extending their service life. Additionally, the one-piece housing enhances the overall strength and rigidity of the power tool holder, supporting its stable operation.

[0041] In some implementations, the transmission position between the drive shaft assembly 1 and the main shaft assembly 2 is located at the bottom of the housing 3, that is, the meshing position of the driven gear and the transmission gear in the lower volume is at the bottom of the housing 3. This shortens the length of the drive shaft assembly 1, reduces the power transmission path, improves the transmission response, and also reduces the material used in the drive shaft, thereby reducing manufacturing costs.

[0042] In some implementations, an extension cylinder 6 extends downward from the center of the bottom of the housing 3, which is connected to the interior of the housing 3. The aforementioned transmission assembly cavity 5 is formed inside the extension cylinder 6, and the transmission shaft assembly 1 is assembled in the transmission assembly cavity 5 inside the extension cylinder.

[0043] By extending the cylinder, a stable rotational support can be provided for the rotation of the drive shaft assembly 1, thereby improving the stability of the drive shaft assembly 1 in the transmission assembly cavity 5.

[0044] In some implementations, the spindle assembly 2 includes a rotating spindle 7 with its lower end at the bottom of the spindle assembly cavity 4 and its upper end above the housing 3, and a first gear cover 8, a driven gear 9, a first bearing component 10, a locking nut 11, a second bearing component 12, a first bearing cover 13, and an ER nut 14 mounted on the rotating spindle 7 from bottom to top.

[0045] The first gear cover 8 is mounted on the lower end face of the rotating spindle 7, pressing down on the driven gear 9 to form a stop below the driven gear 9. The first bearing component 10 is mounted on the rotating spindle 7 above the driven gear 9. The locking nut 11 is mounted above the first bearing component 10. The second bearing component 12 is mounted on the rotating spindle 7 above the locking nut 11, with a portion of its upper end protruding above the housing 3. The first bearing cover 13 is fixedly connected to the housing 3 by bolts, forming a cover on the upper end of the second bearing component 12. The ER nut 14 is mounted on the upper end of the rotating spindle 7 to lock the machining tool inserted into the rotating spindle 7.

[0046] In some implementations, the lower surface of the first bearing cap 13 is provided with a mating surface 15 that fits against the upper end face of the housing 3, and a stepped surface 16 that abuts against the outer circumferential wall and upper end face of the second bearing component 12. The stepped surface 16 can effectively limit the assembly of the second bearing component. A first skeleton oil seal 17 is assembled between the first bearing cap 13 and the outer circumference of the rotating spindle 7.

[0047] A sealing element can be provided between the mating surface 15 and the lower surface of the first bearing cover 13 to enhance the sealing ability, thereby ensuring the sealing between the first bearing cover 13 and the housing 3, and between the first bearing cover 13 and the rotating main shaft 7.

[0048] In some implementations, the drive shaft assembly 1 includes a drive shaft 18, a second gear cover 19, a drive gear 20, a third bearing component 21, a fourth bearing component 22, and a second bearing cover 23. The upper end of the drive shaft 18 extends to the bottom side of the main shaft assembly cavity 4 and is located between multiple main shaft assemblies 2 to facilitate meshing transmission between the drive gear 20 and multiple driven gears 9. The lower end of the drive shaft 18 is located below the housing 3. The second gear cover 19 is mounted on the upper end face of the drive shaft 18 and presses against the upper end of the drive gear 20 for mounting the drive gear 20.

[0049] The third bearing component 21 and the fourth bearing component 22 are rotatably mounted on the drive shaft 18 located in the transmission assembly cavity 5, respectively, so that the entire drive shaft 18 is rotatably mounted in the transmission assembly cavity 5. The second bearing cap 23 is mounted on the housing 3, forming a pressure against the lower part of the fourth bearing component 22, thereby assembling the drive shaft assembly 1 in the transmission assembly cavity 5. A transmission flat sleeve 25 is mounted on the lower end of the drive shaft 18 through a locating pin 24.

[0050] In some implementations, a second skeleton oil seal 26 is fitted between the second gear cover 19 and the outer periphery of the drive shaft 18 to ensure the sealing between the second gear cover 19 and the drive shaft 18.

[0051] In some implementations, a bearing washer 27 is fitted on the drive shaft 18 between the third bearing component 21 and the fourth bearing component 22 to improve the spacing between the two bearing components and enhance operational stability.

[0052] In some implementations, the housing 3 is equipped with two water outlets 28, with each water outlet 28 corresponding to one spindle assembly 2. The lower part of the housing 3 has two water inlet channels 29 located on different sides of the housing 3. Even if the two water inlet channels 29 are in different positions, they are interconnected with the two water outlets 28. This arrangement of the water inlet channels ensures that water can stably enter the water outlets 28 through the inlet channels when switching the operating angle of the power tool holder.

[0053] In some implementations, the inner walls of the spindle assembly cavity 4 and the transmission assembly cavity 5 are formed into a multi-level stepped shape that decreases towards the bottom, so that the transmission shaft assembly 1 can be assembled as a whole in the transmission assembly cavity 5, and the spindle assembly 2 can be assembled as a whole in the spindle assembly cavity 4. Furthermore, the multi-level stepped design can effectively limit the position of the shaft assembly installed in its respective assembly cavity, thus providing effective assistance for assembly accuracy.

[0054] In some implementations, the first bearing component 10, the second bearing component 12, the third bearing component 21, and the fourth bearing component 22 can be arranged using the bearings currently used in power tool holders.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated multi-head power tool holder, comprising a drive shaft assembly and multiple spindle assemblies, characterized in that, It also includes an integrated enclosure. The upper part of the housing has multiple spindle assembly cavities for installing spindle assemblies. Each spindle assembly cavity independently assembles one spindle assembly. The lower part of the housing is provided with a transmission assembly cavity for the transmission shaft assembly to be installed, and the transmission assembly cavity is connected to the main shaft assembly cavity inside the housing; The drive shaft assembly and multiple main shaft assemblies located inside the housing form a transmission connection; The transmission position between the drive shaft assembly and the main shaft assembly is located at the bottom of the housing; An extension cylinder extends downward from the center of the bottom of the housing, communicating with the interior of the housing. The aforementioned transmission assembly cavity is formed inside the extension cylinder. The spindle assembly includes a rotating spindle with its lower end at the bottom of the spindle assembly cavity and its upper end above the housing, and a first gear cover, a driven gear, a first bearing component, a lock nut, a second bearing component, a first bearing cover, and an ER nut assembled on the rotating spindle from bottom to top; The first gear cover is assembled on the lower end face of the rotating main shaft, and the first gear cover presses down on the driven gear. The upper part of the second bearing component protrudes above the housing, and the first bearing cover is fixedly connected to the housing to form a cover on the upper part of the second bearing component; The drive shaft assembly includes a drive shaft, a second gear cover, a drive gear, a third bearing assembly, a fourth bearing assembly, and a second bearing cover. The upper end of the drive shaft extends to the bottom side of the main shaft assembly cavity, located between multiple main shaft assemblies; the lower end of the drive shaft is located below the housing body. The second gear cover is assembled on the upper end face of the drive shaft and presses against the upper end of the drive gear. The third bearing component and the fourth bearing component are rotatably assembled on the drive shaft in the transmission assembly cavity. The second bearing cover is assembled on the housing and forms a pressure against the lower part of the fourth bearing component.

2. The integrated multi-head power tool holder as described in claim 1, characterized in that, The lower surface of the first bearing cover is provided with a mating surface that fits against the upper end face of the housing, and a stepped surface that abuts against the outer circumferential wall and upper end face of the second bearing component. A first skeleton oil seal is assembled between the first bearing cover and the outer circumference of the rotating main shaft.

3. The integrated multi-head power tool holder as described in claim 1, characterized in that, A second skeleton oil seal is assembled between the second gear cover and the outer circumference of the drive shaft.

4. The integrated multi-head power tool holder as described in claim 1, characterized in that, Bearing washers are mounted on the drive shaft between the third and fourth bearing components.

5. The integrated multi-head power tool holder as described in claim 1, characterized in that, The housing is equipped with multiple water outlets, with each water outlet corresponding to one spindle assembly; The lower part of the tank has multiple water inlet channels that are not on the same side of the tank, and these multiple water inlet channels are interconnected with multiple water outlets.

6. The integrated multi-head power tool holder as described in claim 1, characterized in that, The inner walls of the spindle assembly cavity and the transmission assembly cavity are formed in a multi-step shape that decreases in size towards the bottom.

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