90-degree bidirectional power tool apron

Abstract

The utility model discloses a 90-degree two-way power tool apron which comprises a box body A and a box body B. A second main shaft coaxial with a first main shaft is arranged in the box body A. A supporting part is fixedly arranged in the middle of the interior of the box body A. A supporting channel is formed in the supporting part. The supporting channel, a left end assembling hole of the box body A and a right end assembling hole of the box body A are coaxially arranged. Angular contact bearing groups are respectively arranged on the first main shaft and the second main shaft; and deep groove ball bearings are respectively arranged between the first main shaft and the supporting channel and between the second main shaft and the supporting channel. According to the scheme, bidirectional power output can be achieved, the use requirement of double-spindle turning and milling is met, and the purposes of reducing the cost of a user and improving efficiency are achieved; according to the power tool apron, the first main shaft and the second main shaft can be stably supported, the assembling accuracy of the first main shaft and the second main shaft is guaranteed, the rotating stability of the main shafts can be enhanced, meanwhile, the supporting rigidity capacity can be improved, and stable operation of the power tool apron is correspondingly enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool tool holder technology, specifically relating to a 90-degree bidirectional power tool holder. Background Technology

[0002] The powered 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 powered tool holders use a single-direction powered tool holder, that is, one drive shaft drives one spindle to rotate, which can only achieve tool power output in one direction. However, in order to reduce user costs and improve efficiency, dual-spindle milling and turning machines have emerged. Therefore, the powered tool holder also needs to be improved accordingly. Based on the above, further research and development are needed on the dual-spindle structure of the powered tool holder and the technology to maintain rotational stability. Utility Model Content

[0003] The purpose of this invention is to provide a 90-degree bidirectional power tool holder to solve the problems of dual spindle output and rotational stability.

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

[0005] The 90-degree bidirectional power tool holder includes a housing A and a housing B. The left, right, and bottom ends of housing A form interconnected mounting holes. A first spindle is housed within the mounting hole at the left end of housing A. Housing B is fitted into the mounting hole at the bottom of housing A. A drive shaft is mounted within housing B, and a transmission mechanism is established between the drive shaft and the first spindle.

[0006] A second main shaft, coaxial with the first main shaft, is installed in the mounting hole at the right end of housing A. A transmission bevel gear set is installed between the first main shaft and the drive shaft, and between the second main shaft and the drive shaft.

[0007] A support is fixedly installed in the middle of the interior of box A. A support channel is opened in the support, passing through the left and right end assembly holes of box A. The support channel, the left end assembly hole and the right end assembly hole of box A are arranged coaxially.

[0008] An angular contact bearing assembly is respectively installed between the first spindle and the mounting hole at the left end of housing A, and between the second spindle and the mounting hole at the right end of housing A;

[0009] Deep groove ball bearings are respectively installed between the first main shaft and the support channel, and between the second main shaft and the support channel;

[0010] As a further implementation scheme, the first main shaft is provided with the following components from left to right: left ER nut, left skeleton oil seal, left bearing cover, left angular contact bearing assembly, left locking nut, left transmission bevel gear, left washer, left deep groove ball bearing, and left cover;

[0011] The left end face of the first spindle forms a left clamping space. The left ER nut is threadedly connected to the outer periphery of the left end of the first spindle. The left bearing cap is located between the left end face of the housing A and the shoulder on the first spindle. The left skeleton oil seal is located between the inner periphery of the left bearing cap and the outer peripheral wall of the first spindle.

[0012] The left bearing cap is pressed against the outer ring of the left angular contact bearing assembly. The left angular contact bearing assembly is located in the left bearing space between the inner circumference of housing A and the outer circumference of the first spindle. The left locking nut is threaded onto the first spindle. The left end of the left locking nut abuts against the inner ring of the left angular contact bearing assembly, and the right end of the left locking nut abuts against the left end face of the left drive bevel gear. The right end face of the left drive bevel gear contacts the left end face of the left washer. The inner circumference of the right end face of the left washer forms a left contact part that abuts against the inner ring of the left deep groove ball bearing. The left cap is threaded onto the right end face of the first spindle and forms a press-fit with the inner ring of the left deep groove ball bearing.

[0013] As a further implementation scheme, the second main shaft is provided with the following components from right to left: right ER nut, right skeleton oil seal, right bearing cover, right angular contact bearing assembly, right lock nut, right transmission bevel gear, right washer, right deep groove ball bearing, and right cover;

[0014] The right end face of the second spindle forms a right clamping space. The right ER nut is threadedly connected to the outer periphery of the right end of the second spindle. The right bearing cap is located between the right end face of the housing A and the shoulder on the second spindle. The right skeleton oil seal is located between the inner periphery of the right bearing cap and the outer peripheral wall of the second spindle.

[0015] The right bearing cap is pressed against the outer ring of the right angular contact bearing assembly. The right angular contact bearing assembly is located in the right bearing space between the inner circumference of housing A and the outer circumference of the second spindle. The right lock nut is threaded onto the second spindle. The right end of the right lock nut abuts against the inner ring of the right angular contact bearing assembly, and the left end of the right lock nut abuts against the right end face of the right drive bevel gear. The left end face of the right drive bevel gear contacts the right end face of the right washer. The inner circumference of the left end face of the right washer forms a right contact part that abuts against the inner ring of the right deep groove ball bearing. The right cap is threaded onto the left end face of the second spindle and forms a press-fit with the inner ring of the right deep groove ball bearing.

[0016] The left and right pressure caps are spaced within the support channel.

[0017] As a further implementation scheme, the assembly holes at the left and right ends of box A are multi-stage stepped assembly hole structures with narrow openings formed from their respective outer sides toward the support channel, and a minimum hole diameter not less than the diameter of the support channel.

[0018] As a further embodiment, the support is integrally machined and formed inside the housing A.

[0019] As a further embodiment, the angular contact bearing assembly includes two angular contact bearings arranged side by side, with a bearing washer disposed between the two angular contact bearings.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. In this solution, by setting a first spindle and a second spindle in housing A, and driving them through the same transmission shaft, bidirectional power output of the power tool holder is achieved, which meets the usage requirements of dual-spindle turning and milling, thereby reducing user costs and improving efficiency.

[0022] 2. In this solution, a support part with a support channel is fixedly installed in the housing A, which can provide stable support for the first spindle and the second spindle, and ensure the assembly accuracy of the first spindle and the second spindle.

[0023] 3. In this sub-case, by setting angular contact bearing assemblies between the first spindle and the left end mounting hole of housing A, and between the second spindle and the right end mounting hole of housing A, the smoothness of spindle rotation can be enhanced, and the support rigidity can also be improved, which in turn enhances the stable operation of the power tool holder. Attached Figure Description

[0024] 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:

[0025] Figure 1 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of box A in this utility model;

[0027] Figure 3 This is a cross-sectional view of the first main shaft in this utility model;

[0028] 1. Housing A; 2. Housing B; 10. Left end mounting hole; 11. Right end mounting hole; 12. Bottom mounting hole; 13. First spindle; 14. Drive shaft; 15. Second spindle; 16. Support part; 17. Support channel; 18. Angular contact bearing; 19. Bearing washer; 20. Left ER nut; 21. Left skeleton oil seal; 22. Left bearing cap; 23. Left lock nut; 24. Left drive bevel gear; 25. Left washer. 26. Left deep groove ball bearing; 27. Left gland; 28. Left clamping space; 29. ​​Left stepped groove; 30. Left bearing space; 31. Left contact part; 32. Right ER nut; 33. Right skeleton oil seal; 34. Right bearing gland; 35. Right lock nut; 36. Right drive bevel gear; 37. Right washer; 38. Right deep groove ball bearing; 39. Right gland; 40. Bevel gear; 41. First annular step; 42. Second annular step. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-3 This utility model provides the following technical solution: a 90-degree bidirectional power tool holder, including a housing A1 and a housing B2. The housing A1 has a left-end mounting hole 10 at its left end, a right-end mounting hole 11 at its right end, and a bottom mounting hole 12 at its bottom. The left-end mounting hole 10, right-end mounting hole 11, and bottom mounting hole 12 are interconnected with the interior of the housing A1. A first spindle 13 is disposed within the left-end mounting hole 10 of the housing A1. The housing B2 is mounted in the bottom mounting hole 12 of the housing A1. B2 is equipped with a drive shaft 14, which forms a transmission connection with the first main shaft 13. A second main shaft 15, which is coaxially arranged with the first main shaft 13, is installed in the mounting hole 11 at the right end of the housing A1. A transmission bevel gear set is installed between the first main shaft 13 and the drive shaft 14, and between the second main shaft 15 and the drive shaft 14. Through the transmission bevel gear set, the power of the drive shaft 14 is transmitted to the first main shaft 13 and the second main shaft 15 respectively, realizing one power input driving two power outputs.

[0031] A support portion 16 is fixedly installed in the middle of the interior of housing A1. A support channel 17 is formed in the support portion 16, passing through the left-end mounting hole 10 and the right-end mounting hole 11 of housing A1. The support channel 17, the left-end mounting hole 10, and the right-end mounting hole 11 of housing A1 are arranged coaxially to ensure the accuracy and stability of the subsequent assembly of the first spindle 13 and the second spindle 15 into housing A1. Angular contact bearing assemblies are respectively installed between the first spindle 13 and the left-end mounting hole 10 of housing A1, and between the second spindle 15 and the right-end mounting hole 11 of housing A1. Each angular contact bearing assembly includes two angular contact bearings 18 arranged side-by-side, with a bearing washer 19 between the two angular contact bearings 18. Deep groove ball bearings are respectively installed between the first spindle 13 and the support channel 17, and between the second spindle 15 and the support channel 17. The use of angular contact bearings and their side-by-side arrangement enhances the stability and rigidity of the spindle rotation support.

[0032] In some embodiments, the first spindle 13 is provided with the following components from left to right: a left ER nut 20, a left skeleton oil seal 21, a left bearing cap 22, a left angular contact bearing assembly, a left locking nut 23, a left transmission bevel gear 24, a left washer 25, a left deep groove ball bearing 26, and a left cap 27.

[0033] The left end face of the first spindle 13 forms a left clamping space 28 for clamping the corresponding machining tool. The left ER nut 20 is threaded to the outer periphery of the left end of the first spindle 13. The machining tool is locked in the left clamping space 28 by the left ER nut 20. The left bearing cover 22 is set between the left end face of the housing A1 and the shoulder on the first spindle 13. It is used to cover the shoulder of the first spindle 13 and the left end face of the housing A1. The left skeleton oil seal 21 is set between the inner periphery of the left bearing cover 22 and the outer peripheral wall of the first spindle 13. It is used to seal.

[0034] The left bearing cap 22 is pressed against the outer ring of the left angular contact bearing assembly to press and position the left angular contact bearing assembly. Specifically, the left bearing cap 22 has a left stepped groove 29 on its end face. The groove wall fits with the outer circumference of the outer ring of the left angular contact bearing assembly, and the bottom of the groove abuts against the side of the outer ring of the left angular contact bearing assembly, thereby forming an effective and stable cap for the left angular contact bearing assembly. The left end of the inner ring of the left angular contact bearing assembly abuts against the shoulder of the first spindle 13, thereby effectively positioning the left end of the left angular contact bearing assembly.

[0035] The left angular contact bearing assembly is located in the left bearing space 30 between the inner circumference of housing A1 and the outer circumference of the first spindle 13. The left locking nut 23 is threadedly connected to the first spindle 13. The left end of the left locking nut 23 abuts against the inner ring of the left angular contact bearing assembly. The left locking nut 23 can effectively position the right end of the left angular contact bearing assembly, so that the left angular contact bearing assembly is assembled on the first spindle 13.

[0036] The right end of the left locking nut 23 abuts against the left end face of the left drive bevel gear 24, thus assembling and positioning the left end of the left drive bevel gear 24. The right end face of the left drive bevel gear 24 contacts the left end face of the left washer 25, achieving assembly and positioning of the right end of the left drive bevel gear 24. The inner circumference of the right end face of the left washer 25 forms a left contact portion 31 that abuts against the inner ring of the left deep groove ball bearing 26, thereby assembling and positioning the left end of the left deep groove ball bearing 26. The outer ring of the left deep groove ball bearing 26 is assembled into the left end within the support channel 17. The left pressure cap 27 is threaded to the right end face of the first spindle 13 and presses against the inner ring of the left deep groove ball bearing 26, achieving assembly and positioning of the right end of the left deep groove ball bearing 26. Based on the above structure, the left ER nut 20, The left skeleton oil seal 21, left bearing cover 22, left angular contact bearing assembly, left locking nut 23, left transmission bevel gear 24, left washer 25, left deep groove ball bearing 26, and left cover 27 are sequentially assembled on the first spindle 13 and integrally assembled into the left end mounting hole 10 of the housing A1. That is, before this, all components are assembled on the first spindle 13 and the corresponding assembly preload is adjusted by the left cover 27. Then, the left cover 27 is pushed into the left end mounting hole 10 of the housing A1. The assembly is completed after the right end face of the left bearing cover 22 is engaged with the left end face of the housing A1. This integral assembly can ensure the stability of the assembly and improve the assembly efficiency, and also facilitates the overall assembly, disassembly and maintenance.

[0037] In some embodiments, the second spindle 15 is provided with the following components from right to left: right ER nut 32, right skeleton oil seal 33, right bearing cap 34, right angular contact bearing assembly, right locking nut 35, right transmission bevel gear 36, right washer 37, right deep groove ball bearing 38, and right cap 39.

[0038] The right end face of the second spindle 15 forms a right clamping space. The right ER nut 32 is threaded to the outer periphery of the right end of the second spindle 15. The right bearing cap 34 is located between the right end face of the housing A1 and the shoulder on the second spindle 15. The right skeleton oil seal 33 is located between the inner periphery of the right bearing cap 34 and the outer peripheral wall of the second spindle 15.

[0039] The right bearing cap 34 is pressed against the outer ring of the right angular contact bearing assembly. The right angular contact bearing assembly is located in the right bearing space between the inner circumference of housing A1 and the outer circumference of the second spindle 15. The right locking nut 35 is threaded onto the second spindle 15. The right end of the right locking nut 35 abuts against the inner ring of the right angular contact bearing assembly, and the left end of the right locking nut 35 abuts against the right end face of the right drive bevel gear 36. The left end face of the right drive bevel gear 36 contacts the right end face of the right washer 37. The inner circumference of the left end face of the right washer 37 forms a right contact part that abuts against the inner ring of the right deep groove ball bearing 38. The right cap 39 is threaded onto the left end face of the second spindle 15 and forms a press-fit with the inner ring of the right deep groove ball bearing 38. The left cap 27 and the right cap 39 are spaced apart within the support channel 17 to maintain an appropriate spacing between the first spindle 13 and the second spindle 15.

[0040] It should be noted that the components installed on the second spindle 15 are actually the same as those installed on the first spindle 13 in the same way. It can also be understood that the first spindle 13 and its components, and the second spindle 15 and its components are arranged in a mirror image with the center line of the housing A1. Therefore, the specific installation method and structure of the second spindle 15 and its components will not be described in detail.

[0041] In some embodiments, the mounting holes at the left and right ends of the housing A1 are multi-stage stepped mounting hole structures with a narrowed opening from their respective outer sides toward the support channel 17 and a minimum hole diameter not less than that of the support channel 17, thereby ensuring the smooth assembly of the first spindle 13 and the second spindle 15 into the corresponding mounting holes.

[0042] In some embodiments, the support portion 16 is integrally machined with the housing A1 and formed inside the housing A1. Its main purpose is to ensure the overall stability between the support portion 16 and the housing A1, and to ensure that the left-end mounting hole, the right-end mounting hole, and the support channel 17 can be machined along the same axis, thereby further enhancing the assembly accuracy of the first spindle 13 and the second spindle 15.

[0043] In some embodiments, a bevel gear 40 is mounted on the upper end of the drive shaft 14. The bevel gear 40 meshes with the left drive bevel gear 24 to form a drive bevel gear set between the first main shaft 13 and the drive shaft 14. The bevel gear meshes with the right drive bevel gear 36 to form a drive bevel gear set between the second main shaft 15 and the drive shaft 14. Thus, when the drive shaft 14 rotates, the bevel gear can simultaneously drive the rotation of the left drive bevel gear 24 and the right drive bevel gear 36, thereby realizing the rotational drive of the first main shaft 13 and the second main shaft 15.

[0044] The housing B2 is a through-type structure, with the drive shaft 14 mounted within it via two angular contact bearings at the top and two deep groove ball bearings at the bottom. This design enhances the stability and rigidity of the rotational support for the drive shaft 14. Specifically, a first annular step 41 is formed on the lower outer circumference of the drive shaft 14, and a second annular step 42 is formed on the lower inner wall of the housing B2 below the first annular step 41. The space between the first and second annular steps 41 and 42 forms the mounting space for the two deep groove ball bearings. The outer ring of the deep groove ball bearing abuts against the second annular step 42, and the inner ring abuts against the first annular step 41, thus constraining the deep groove ball bearings between the drive shaft 14 and the housing B2. This allows the drive shaft 14 to withstand higher rotational speeds and achieve higher operational precision. Furthermore, the deep groove ball bearings do not require additional retaining rings, which reduces bearing operating temperature and extends their service life.

[0045] 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. A 90-degree bidirectional power knife seat, comprising a box A and a box B, the left end, the right end and the bottom of the box A form an assembly hole which is in communication with the inside of the box A, a first main shaft is arranged in the left end assembly hole of the box A, the box B is assembled in the bottom assembly hole of the box A, a transmission shaft is arranged in the box B, and the transmission shaft and the first main shaft form a transmission arrangement, characterized in that, a second main shaft coaxial with the first main shaft is arranged in the right end assembly hole of the box A, and a transmission bevel gear set is arranged between the first main shaft and the transmission shaft and between the second main shaft and the transmission shaft, a supporting part is fixedly arranged in the middle of the inside of the box A, a supporting channel which penetrates the left end assembly hole and the right end assembly hole of the box A is formed in the supporting part, and the supporting channel, the left end assembly hole of the box A and the right end assembly hole of the box A are arranged coaxially, an angular contact bearing set is arranged between the first main shaft and the left end assembly hole of the box A and between the second main shaft and the right end assembly hole of the box A, respectively; a deep groove ball bearing is arranged between the first main shaft and the supporting channel and between the second main shaft and the supporting channel, respectively.

2. The 90 degree bidirectional power knife park in accordance with claim 1, wherein, a left ER nut, a left skeleton oil seal, a left bearing pressing cover, a left angular contact bearing set, a left locking nut, a left transmission bevel gear, a left gasket, a left deep groove ball bearing and a left pressing cover are sequentially arranged on the first main shaft from left to right; a left end surface of the first main shaft forms a left clamping space, the left ER nut is threadedly connected to the left end outer periphery of the first main shaft, the left bearing pressing cover is arranged between the left end surface of the box A and the shaft shoulder on the first main shaft, and the left skeleton oil seal is arranged between the inner periphery of the left bearing pressing cover and the outer peripheral wall of the first main shaft; the left bearing pressing cover is clamped on the outer ring of the left angular contact bearing set, the left angular contact bearing set is in a left bearing space between the inner periphery of the box A and the outer periphery of the first main shaft, the left locking nut is threadedly connected to the first main shaft, the left end of the left locking nut abuts against the inner ring of the left angular contact bearing set, the right end of the left locking nut abuts against the left end surface of the left transmission bevel gear, the right end surface of the left transmission bevel gear contacts the left end surface of the left gasket, the right end surface of the left gasket forms a left abutting part which abuts against the inner ring of the left deep groove ball bearing, and the left pressing cover is threadedly connected to the right end surface of the first main shaft and the inner ring of the left deep groove ball bearing to form a pressing connection.

3. The 90 degree bidirectional power knife park in accordance with claim 2, wherein, a right ER nut, a right skeleton oil seal, a right bearing pressing cover, a right angular contact bearing set, a right locking nut, a right transmission bevel gear, a right gasket, a right deep groove ball bearing and a right pressing cover are sequentially arranged on the second main shaft from right to left; a right end surface of the second main shaft forms a right clamping space, the right ER nut is threadedly connected to the right end outer periphery of the second main shaft, the right bearing pressing cover is arranged between the right end surface of the box A and the shaft shoulder on the second main shaft, and the right skeleton oil seal is arranged between the inner periphery of the right bearing pressing cover and the outer peripheral wall of the second main shaft. The right bearing gland is clamped on the outer ring of the right angular contact bearing set, the right angular contact bearing set is located in the right bearing space between the inner wall of the box A and the outer wall of the second main shaft, the right locking nut is threadedly connected to the second main shaft, the right end of the right locking nut abuts against the inner ring of the right angular contact bearing set, the left end of the right locking nut abuts against the right end surface of the right transmission bevel gear, the left end surface of the right transmission bevel gear is in contact with the right end surface of the right washer, the inner wall position of the left end surface of the right washer forms a right abutting portion abutting against the inner ring of the right deep groove ball bearing, and the right gland is threadedly connected to the left end surface of the second main shaft and the inner ring of the right deep groove ball bearing to form a pressing connection. The left bearing gland and the right bearing gland are spaced apart in the bearing channel.

4. The 90 degree bidirectional power hub of claim 1 or 2 or 3, wherein, The left end assembly hole and the right end assembly hole of the box A are multi-stage stepped assembly holes with a necked portion formed from the outer side towards the bearing channel, and the minimum hole diameter is not less than the hole diameter of the bearing channel.

5. The 90 degree bidirectional power hub of claim 4, wherein, The bearing portion is integrally formed in the box A.

6. The 90 degree bidirectional power hub of claim 4, wherein, The angular contact bearing set comprises two angular contact bearings arranged side by side, and a bearing washer is arranged between the two angular contact bearings.

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