Efficient cutter bar for milling groove in inner hole of motor shell

Abstract

The utility model discloses an efficient cutter bar for milling grooves in an inner hole of a motor shell, which comprises a motor shell, a plurality of milling grooves and a supporting mechanism, the supporting mechanism comprises a first cutter bar and a second cutter bar, a synchronous belt wheel is rotationally connected between the first cutter bar and the second cutter bar, side notches are formed in the outer side of the first cutter bar and the outer side of the second cutter bar, a synchronous belt is arranged on the outer side of the synchronous belt wheel, the synchronous belt is located in the two side notches, and an elastic chuck is installed in the synchronous belt wheel; through cooperative use of the drilling and milling cutter and the supporting mechanism, the device can flexibly move and expand in a narrow space in a motor shell, machining is facilitated, the machining efficiency is improved, it is guaranteed that the production efficiency is improved, the production cost is reduced, meanwhile, the anti-interference capacity of small-space operation is improved, and the working efficiency is improved. And the qualified rate of processed products is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor processing technology, specifically a high-efficiency tool holder for milling grooves inside the inner hole of a motor housing. Background Technology

[0002] In modern industrial production, motors, as important power conversion devices, are widely used in various mechanical equipment. The hydraulic motor housing, as a key component, has a complex internal structure with numerous holes and milled grooves (as shown in the instruction manual). Figure 1 As shown in the figure, these structures play a decisive role in the performance and function of the hydraulic motor.

[0003] However, traditional machining processes have significant limitations when milling grooves in the inner holes of hydraulic motor housings. Due to the confined internal space of the housing, conventional cutting tools and machining equipment are difficult to maneuver, resulting in extremely inconvenient machining operations. Under these circumstances, machining efficiency is extremely low, severely restricting the improvement of production efficiency and increasing production costs. At the same time, the confined internal space makes the cutting tool susceptible to vibration and misalignment during machining, and these unstable factors directly affect the positional accuracy, dimensional accuracy, and surface quality of the milled grooves, leading to a low product yield.

[0004] Therefore, this utility model provides a high-efficiency tool holder for milling grooves inside the inner hole of a motor housing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency tool holder for milling grooves inside the inner hole of a motor housing, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency milling bar for milling grooves inside the inner hole of a motor housing, comprising a motor housing, a plurality of milling grooves, and a support mechanism. The support mechanism includes a first tool bar and a second tool bar, with a synchronous pulley rotatably connected between the first tool bar and the second tool bar. Both the first and second tool bars have side notches on their outer sides, and a synchronous belt is provided on the outer side of the synchronous pulley, located inside the two side notches. An elastic chuck is installed inside the synchronous pulley, holding a drilling and milling cutter within it. The drilling and milling cutter extends beyond the outer side of the second tool bar. Bearings are installed inside both the first and second tool bars, and the synchronous pulley is rotatably connected between the two bearings.

[0007] Preferably, the second tool holder is provided with three mating bolts, all three of which are threaded to the inner wall of the first tool holder. The second tool holder is also provided with two tapered pins, both of which are inserted into the inner wall of the first tool holder.

[0008] Preferably, the inner wall of the elastic collet is threaded with a fastening bolt, which is rotatably connected to the inner wall of the first tool holder.

[0009] Preferably, the first tool holder has a first inner groove, and a limiting rod is slidably connected to the inner wall of the first tool holder. A hexagonal plate is fixedly connected to the side wall of the limiting rod, and a return spring is sleeved on the side wall of the limiting rod. The hexagonal plate and the return spring are both located inside the first inner groove. A plurality of limiting slots are provided on the outer side of the synchronous pulley, and the limiting rod is inserted into the inner wall of the limiting slot.

[0010] Preferably, the first tool holder has a bottom groove and two second inner grooves respectively at its bottom and one side. The bottom end of the limiting rod is located inside the bottom groove. A magnetic block is slidably connected to the inner wall of the limiting rod. Magnetic rings are installed on the inner walls of the two second inner grooves. The magnetic rings are magnetically attracted to the magnetic block. Push rods are slidably connected to the inner walls of the two magnetic rings. The push rods are in contact with one side of the magnetic block. Limiting rings are fixedly connected to the side walls of the two push rods.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model, through the combined use of a drill and milling cutter and a support mechanism, enables the device to stably complete drilling or opening work even when the internal volume of the motor housing is relatively small. This allows the device to move and operate flexibly within the confined space inside the motor housing, facilitating processing, improving processing efficiency, ensuring increased production efficiency, reducing production costs, and simultaneously enhancing the anti-interference capability of small-space operations, thereby increasing the pass rate of processed products. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the motor housing in this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the support mechanism in this utility model;

[0016] Figure 3 This is a side cross-sectional view of the present invention in use.

[0017] Figure 4 This is a partial side view enlarged cross-sectional schematic diagram of the support mechanism in this utility model;

[0018] Figure 5 This is the utility model. Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Motor housing; 11. Milling groove; 2. Support mechanism; 21. First tool holder; 211. First inner groove; 212. Bottom groove; 213. Second inner groove; 22. Second tool holder; 23. Side notch; 24. Bearing; 25. Connecting bolt; 26. Tapered pin; 3. Synchronous pulley; 31. Synchronous belt; 32. Elastic chuck; 33. Drill cutter; 34. Fastening bolt; 35. Limiting slot; 4. Limiting rod; 41. Hexagonal plate; 42. Return spring; 43. Magnetic block; 5. Magnetic ring; 51. Push rod; 52. Limiting ring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 A high-efficiency tool holder for milling grooves inside the inner hole of a motor housing includes a motor housing body 1, a plurality of milling grooves 11 and a support mechanism 2. The support mechanism 2 includes a first tool holder 21 and a second tool holder 22, and a synchronous pulley 3 is rotatably connected between the first tool holder 21 and the second tool holder 22.

[0022] The first tool holder 21 and the second tool holder 22 are both provided with side notches 23 on their outer sides, and the synchronous belt 31 is provided on the outer side of the synchronous pulley 3. The synchronous belt 31 is located inside the two side notches 23.

[0023] It should be noted that, in this embodiment, the first cutter bar 21 and the second cutter bar 22 make way for the timing belt 31 through the side notch 23.

[0024] Among them, an elastic chuck 32 is installed inside the synchronous pulley 3, and a drill cutter 33 is held inside the elastic chuck 32. The drill cutter 33 extends out of the outside of the second tool holder 22.

[0025] The first tool holder 21 and the second tool holder 22 are each equipped with a bearing 24, and the synchronous pulley 3 is rotatably connected between the two bearings 24.

[0026] It should be noted that the two bearings 24 described in this embodiment are clamped to the synchronous pulley 3.

[0027] Specifically, to facilitate the creation of several milling slots 11 within the confined space inside the motor housing 1, the support mechanism 2 clamps the synchronous pulley 3 component via a first tool holder 21 and a second tool holder 22. Two bearings 24 ensure stable rotation of the synchronous pulley 3 between the two tool holders. The synchronous belt 31 is driven by an external drive pulley, enabling it to rotate the elastic chuck 32. A side notch 23 provides clearance for the synchronous belt 31, ensuring that when the device enters the motor housing 1, the synchronous belt 31 is protected by the first and second tool holders 21 and reduced from external interference. The synchronous pulley 3 clamps and fixes the drill and milling cutter 33 via the elastic chuck 32, and the elastic chuck 32 is controlled to slide towards the first tool holder 21. This allows the elastic chuck 32 to clamp and fix the drill and milling cutter 33, so that when the synchronous pulley 3 rotates, it can drive the drill and milling cutter 33 to rotate synchronously. The drill and milling cutter 33 follows the support mechanism 2 into the interior of the motor housing 1. The drill and milling cutter 33 cuts mill grooves 11 into the interior of the motor housing 1. Through the cooperation of the drill and milling cutter 33 and the support mechanism 2, the device can stably complete drilling or opening work with a small volume inside the motor housing 1. This allows the device to move and operate flexibly in the narrow space inside the motor housing 1, which is convenient for processing. It improves processing efficiency, ensures the improvement of production efficiency, reduces production costs, and at the same time improves the anti-interference ability of small space operation, resulting in a higher product qualification rate.

[0028] In one embodiment of this utility model, such as Figures 1-5 As shown, the second tool holder 22 is provided with three mating bolts 25, all of which are threaded to the inner wall of the first tool holder 21. The second tool holder 22 is provided with two tapered pins 26, both of which are inserted into the inner wall of the first tool holder 21.

[0029] Specifically, the first tool holder 21 and the second tool holder 22 are connected and fixed by three connecting bolts 25. After the first tool holder 21 and the second tool holder 22 are connected, the three connecting bolts 25 are tightened so that the connecting bolts 25 can pull the first tool holder 21 towards the second tool holder 22, thereby enabling the first tool holder 21 and the second tool holder 22 to be stably clamped and fixed, ensuring the stability of the device. Two tapered pins 26 are distributed vertically. When the first tool holder 21 and the second tool holder 22 are subjected to the vibration and impact force generated by milling, the tapered pins 26 can assist the connecting bolts 25 and other connecting parts to enhance the stability of the connection of each part of the support mechanism 2. The tapered pins 26 are tightly fitted with the pin holes to prevent relative rotation or displacement between the parts, avoiding the situation where the drill and milling cutter 33 shakes due to loose connection, affecting the machining accuracy or even causing tool damage or machining accidents.

[0030] In one embodiment of this utility model, such as Figures 1-5 As shown, the inner wall of the elastic collet 32 ​​is threaded with a fastening bolt 34, which is rotatably connected to the inner wall of the first tool holder 21.

[0031] It should be noted that the end of the fastening bolt 34 with a large diameter described in this embodiment is constrained by the inner wall of the first tool holder 21.

[0032] Specifically, by controlling the rotation of the fastening bolt 34, the fastening bolt 34 can push or pull the elastic collet 32. When the elastic collet 32 ​​moves closer to the fastening bolt 34, the inclined surface at the other end of the elastic collet 32 ​​can be compressed by the inner wall of the second tool holder 22, thereby completing the clamping and fixing of the drill and milling cutter 33 and ensuring the stable use of the drill and milling cutter 33.

[0033] In one embodiment of this utility model, such as Figures 1-5 As shown, a first inner groove 211 is provided in the first tool bar 21. A limit rod 4 is slidably connected to the inner wall of the first tool bar 21. A hexagonal plate 41 is fixedly connected to the side wall of the limit rod 4. A return spring 42 is sleeved on the side wall of the limit rod 4. Both the hexagonal plate 41 and the return spring 42 are located inside the first inner groove 211. Several limit slots 35 are provided on the outer side of the synchronous pulley 3. The limit rod 4 is inserted into the inner wall of the limit slot 35.

[0034] It should be noted that the position and angle of the limiting slot 35 and the limiting rod 4 described in this embodiment are all corresponding.

[0035] Specifically, the first inner groove 211 accommodates the hexagonal plate 41 and the return spring 42. The return spring 42 pushes the hexagonal plate 41 in the opposite direction. The hexagonal plate 41 drives the limiting rod 4 to move away from the synchronous pulley 3 stably, preventing the limiting rod 4 from interfering with the normal rotation of the synchronous pulley 3. When the drill and milling cutter 33 is disassembled or installed, the limiting rod 4 is controlled to slide towards the synchronous pulley 3, so that the limiting rod 4 can be inserted into the limiting slot 35 to lock the synchronous pulley 3. The synchronous pulley 3 cannot rotate, which makes it easier for the operator to control the rotation of the fastening bolt 34, thereby completing the tension adjustment of the elastic chuck 32.

[0036] In one embodiment of this utility model, such as Figures 1-5 As shown, the bottom of the first cutter bar 21 has a bottom groove 212 and two second inner grooves 213 respectively. The bottom end of the limiting rod 4 is located inside the bottom groove 212. A magnetic block 43 is slidably connected to the inner wall of the limiting rod 4. A magnetic ring 5 is installed on the inner wall of each of the two second inner grooves 213. The magnetic ring 5 and the magnetic block 43 are magnetically attracted. A push rod 51 is slidably connected to the inner wall of each of the two magnetic rings 5. The push rod 51 contacts one side of the magnetic block 43. A limiting ring 52 is fixedly connected to the side wall of each of the two push rods 51.

[0037] It should be noted that both push rods 51 described in this embodiment are exposed on the outer side of the first tool holder 21.

[0038] Specifically, the bottom groove 212 makes way for the limiting rod 4, facilitating the sliding of the limiting rod 4 into the limiting slot 35. The second inner groove 213 accommodates and limits the magnetic ring 5 and the limiting ring 52. The magnetic block 43 inside the limiting rod 4 can slide towards the magnetic ring 5. The two magnetic rings 5 ​​attract the magnetic block 43. When the magnetic block 43 is connected to the two magnetic rings 5, the magnetic block 43 limits the limiting rod 4, ensuring that the limiting rod 4 remains stably in its current position and cannot slide. The movement allows the magnetic block 43 to connect with the upper magnetic ring 5 during the disassembly and assembly of the drill and milling cutter 33, thereby enabling the limiting rod 4 to stably limit the synchronous pulley 3. When the disassembly and assembly work is completed, the push rod 51 is squeezed to retract into the first tool bar 21, and the push rod 51 pushes the magnetic block 43, so that the magnetic block 43 can retract into the limiting rod 4, completing the unlocking. The reset spring 42 pushes the hexagonal plate 41, so that the magnetic block 43 reaches the position of the lower magnetic ring 5 and is attracted and connected again.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0040] Working principle: When milling groove 11 into the motor housing 1, the drill cutter 33 follows the support mechanism 2 into the interior of the motor housing 1. The synchronous belt 31 drives the synchronous pulley 3 to rotate, which in turn drives the elastic chuck 32 to rotate. The elastic chuck 32 then drives the drill cutter 33 to rotate, thus enabling the drill cutter 33 to mill groove 11 into the interior of the motor housing 1. This allows the device to stably complete drilling or milling operations even with a small internal volume within the motor housing 1. When the drill cutter 33 is disassembled or installed, the limiting rod 4 slides towards the synchronous pulley 3, allowing the limiting rod 4 to... Inserting into the limiting slot 35 completes the limiting lock of the synchronous pulley 3, preventing the synchronous pulley 3 from rotating. The magnetic block 43 connects with the upper magnetic ring 5, thereby enabling the limiting rod 4 to stably limit the synchronous pulley 3, facilitating the operator to rotate the fastening bolt 34 and adjust the tension of the elastic chuck 32. When the work is completed, the push rod 51 is squeezed to retract into the first cutter bar 21, pushing the magnetic block 43 so that it can retract into the limiting rod 4, completing the unlocking. The reset spring 42 pushes the hexagonal plate 41, causing the magnetic block 43 to reach the lower magnetic ring 5 and re-attach.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high efficiency cutter bar for slot milling inside a bore of a motor housing, comprising a motor outer housing (1), a plurality of cutter slots (11) and a support mechanism (2), characterised in that, The support mechanism (2) comprises a first cutter bar (21) and a second cutter bar (22), a synchronous pulley (3) is rotatably connected between the first cutter bar (21) and the second cutter bar (22), wherein, The first cutter bar (21) and the second cutter bar (22) are provided with side position notches (23) on the outer sides, the synchronous pulley (3) is provided with a synchronous belt (31) on the outer side, and the synchronous belt (31) is inside the two side position notches (23); The synchronous pulley (3) is provided with an elastic chuck (32) inside, the elastic chuck (32) clamps a drill and mill cutter (33) inside, and the drill and mill cutter (33) extends out of the second cutter bar (22); The first cutter bar (21) and the second cutter bar (22) are provided with bearings (24) inside, and the synchronous pulley (3) is rotatably connected between the two bearings (24).

2. The high efficiency cutter bar for motor housing bore interior slot milling according to claim 1, wherein, The second cutter bar (22) is provided with three butt screws (25), the three butt screws (25) are threadedly connected to the inner wall of the first cutter bar (21), and the second cutter bar (22) is provided with two conical pins (26), and the two conical pins (26) are inserted into the inner wall of the first cutter bar (21).

3. The high efficiency cutter bar for motor housing bore interior slot milling according to claim 1, wherein, The elastic chuck (32) is provided with a fastening bolt (34) on the inner wall, and the fastening bolt (34) is rotatably connected to the inner wall of the first cutter bar (21).

4. The high efficiency cutter bar for motor housing bore interior slot milling according to claim 1, wherein, The first cutter bar (21) is provided with a first inner groove (211), the first cutter bar (21) is slidably connected with a limiting plug rod (4) on the inner wall, the limiting plug rod (4) is fixedly connected with a six-sided plate (41) on the side wall, the limiting plug rod (4) is provided with a reset spring (42) on the side wall, and the six-sided plate (41) and the reset spring (42) are inside the first inner groove (211).

5. The high efficiency cutter bar for motor housing bore interior slot milling according to claim 4, wherein, The first cutter bar (21) is provided with a bottom groove (212) and two second inner grooves (213) on one side and the bottom, respectively, the bottom end of the limiting plug rod (4) is inside the bottom groove (212), the limiting plug rod (4) is slidably connected with a magnetic block (43) on the inner wall, two magnetic rings (5) are mounted on the inner walls of the two second inner grooves (213), the magnetic rings (5) are magnetically adsorbed with the magnetic block (43), two push rods (51) are slidably connected with the inner walls of the two magnetic rings (5), the push rods (51) contact one side of the magnetic block (43), and the side walls of the two push rods (51) are fixedly connected with limiting rings (52).

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