A synchronous group milling device and processing method for multi-bearing check ring grooves of a transmission case

Abstract

The application discloses a synchronous group milling device and processing method for multi-bearing check ring grooves of a transmission case, belongs to the technical field of transmission case processing, and comprises the following: a workbench installed on the lifting table of a machine tool; a support frame connected to the cross beam of the machine tool and located above the workbench, wherein the support frame comprises an upper suspension beam connecting plate, two side suspension beam connecting plates and a plurality of bearing support plates; the workbench is expanded and installed on the lifting table of the machine tool to fix the transmission case to be processed; according to the position, size and quantity of the bearing check ring grooves to be processed, a corresponding number and size of milling groove saw blade knives are arranged; the support frame has a supporting effect on a multi-axis horizontal milling transmission mechanism; the multi-axis horizontal milling transmission mechanism is connected to the main shaft of the machine tool; under the connecting effect of the multi-axis horizontal milling transmission mechanism, complicated clamping operations are avoided, and the slotting processing efficiency and processing precision of the bearing check ring grooves are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of transmission housing processing technology, and particularly relates to a synchronous group milling device and processing method for multi-bearing retaining ring grooves in transmission housings. Background Technology

[0002] The bearing retaining ring groove of the transmission housing is an annular groove machined into the inner wall of the bearing mounting hole of the housing. Its core function is to install the elastic retaining ring, thereby axially positioning and limiting the outer ring of the bearing and preventing the bearing from moving along the axial direction during the operation of the transmission.

[0003] Currently, multiple bearing retaining ring grooves often need to be machined on the transmission housing. These bearing retaining ring grooves are located in different positions on the transmission housing, and their dimensions also vary. Since the machining of bearing retaining ring grooves is done using a horizontal milling machine, the number of stations that a horizontal milling machine can process at the same time is limited. This requires multiple clamping operations to complete the machining of multiple bearing retaining ring grooves. The complicated loading and unloading is not only time-consuming and labor-intensive, but the repeated clamping and positioning also affects the machining accuracy of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to provide a synchronous group milling device and processing method for multi-bearing retaining ring grooves in a transmission housing in order to solve the above-mentioned problems.

[0005] On the one hand, in order to achieve the above objectives, the present invention adopts the following technical solution: a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing, comprising: The worktable is mounted on the lifting platform of the machine tool; A support frame is connected to the crossbeam of the machine tool and located above the worktable. The support frame includes an upper suspension beam connecting plate, two side suspension beam connecting plates, and multiple bearing support plates. The upper suspension beam connecting plate is fixedly connected to the crossbeam of the machine tool. The two side suspension beam connecting plates are respectively fixedly connected to opposite sides of the upper suspension beam connecting plate. The two opposite ends of the multiple bearing support plates are respectively fixedly connected to two side suspension beam connecting plates. The bearing support plates extend to the surface of the upper suspension beam connecting plate, and a gearbox is formed between two adjacent bearing support plates. Multiple milling saw blades, whose axes are arranged parallel to each other and located within the support frame; A multi-axis horizontal milling transmission mechanism is connected to the support frame and the machine tool spindle, and the multi-axis horizontal milling transmission mechanism connects to and drives multiple milling saw blades to rotate.

[0006] As a further description of the above technical solution: The support frame also includes a base plate, which is fixedly connected to two adjacent bearing support plates and blocks the gearbox.

[0007] As a further description of the above technical solution: The multi-axis horizontal milling transmission mechanism includes multiple transmission gears, multiple transition shafts, and multiple tool holders. The multiple transition shafts are connected to two adjacent bearing support plates via bearing bodies. The multiple transmission gears are located inside the gearbox, with adjacent transmission gears meshing. The multiple tool holders are arranged in parallel to each other and pass through the multiple bearing support plates. The tool holders are connected to the bearing support plates via bearing bodies. The end of any tool holder is connected to the machine tool spindle. Each tool holder is fixedly connected to one transmission gear, and the remaining transmission gears are fixedly connected to the transition shafts. Multiple milling saw blades are fixedly connected to the multiple tool holders.

[0008] As a further description of the above technical solution: A spindle connector is fixedly connected to the end of any of the aforementioned tool holders.

[0009] As a further description of the above technical solution: A lock nut is screwed to the end of the tool holder.

[0010] As a further description of the above technical solution: The transmission gear is a helical gear.

[0011] As a further description of the above technical solution: The grooving saw blade is a saw blade milling cutter, and the axis of the grooving saw blade coincides with the axis of the cutter bar.

[0012] On the other hand, in order to achieve the above objectives, the present invention employs the following method: a synchronous group milling method for multi-bearing retaining ring grooves in a transmission housing, comprising the following steps: 1) Based on the position, size, and quantity of the bearing retaining ring grooves to be machined on the gearbox housing, set a corresponding number of tool holders and a corresponding number and size of milling saw blades; 2) Pass the cutter bar through multiple bearing support plates and multiple milling saw blades, fix the milling saw blades to the cutter bar, connect the cutter bar to the bearing support plate through the bearing body, fix the cutter bar to the transmission gear in the gearbox, and screw lock nuts to the opposite ends of the cutter bar. Install multiple cutter bars in sequence. 3) Design the transmission ratio between gear sets of multiple transmission gears according to the processing parameters. When the distance between two adjacent tool holders is far, set a corresponding number of transition shafts between the two tool holders. The transition shafts are connected to the bearing support plate through the bearing body, and the transmission gears are fixedly installed on the transition shafts to complete the assembly of the group milling device. 4) Fix the worktable on the lifting platform of the machine tool, connect the upper suspension beam connecting plate of the support frame to the crossbeam of the machine tool, connect the spindle connector on the tool bar to the machine tool spindle, and the tool bar connected to the spindle connector is the active tool bar, while the other tool bars are the driven tool bars. 5) Fix the gearbox housing to be processed onto the worktable using a fixture, and place multiple milling saw blades into the grooves of multiple bearing retaining rings to be processed; 6) The rotation of the machine tool spindle drives the active tool holder to rotate, and under the transmission action of the transmission gear, the other driven tool holders rotate at the same speed or at different speeds; 7) Control the machine tool's lifting platform to rise to change the position of the milling saw blade, determine the feed rate, and the milling saw blade will perform grooving on the inner wall of the bearing retaining ring groove until the axis of the milling saw blade coincides with the axis of the corresponding bearing retaining ring groove, thus completing the grooving process.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the worktable is extended and installed on the lifting platform of the machine tool to fix the gearbox housing to be processed. According to the position, size and number of bearing retaining ring grooves to be processed, a corresponding number and size of milling saw blades are set. The support frame supports the multi-axis horizontal milling transmission mechanism, which is connected to the machine tool spindle. Under the connection of the multi-axis horizontal milling transmission mechanism, the machine tool spindle drives the multi-slot milling saw blades to rotate. Under the feed motion of the lifting platform of the machine tool, the multi-slot milling saw blades perform milling operations at the same speed or different speeds, thereby realizing the synchronous grooving of multiple bearing retaining ring grooves in one clamping and positioning, avoiding complicated clamping operations, and greatly improving the grooving efficiency and processing accuracy of bearing retaining ring grooves.

[0014] 2. In this invention, the tool holder connected by the spindle connector is the active tool holder, and the other tool holders are driven tool holders. Under the transmission action of the transmission gears, the active tool holder rotates, driving the driven tool holders to rotate, which in turn drives multiple milling saw blades to rotate synchronously for milling. On the one hand, all transmission gears can be designed to have the same specifications. On the other hand, the transmission ratio between the gear sets of multiple transmission gears can be designed according to the processing parameters. When the distance between two adjacent tool holders is far, a corresponding number of transition shafts need to be set between the two tool holders, and transmission gears are installed on the transition shafts to ensure stable linkage between multiple tool holders. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 1 .

[0016] Figure 2 A schematic diagram of the overall structure of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 2 .

[0017] Figure 3 An exploded view of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing.

[0018] Figure 4 A cross-sectional view of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 1 .

[0019] Figure 5 A cross-sectional view of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 2 .

[0020] Figure 6 A cross-sectional view of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 3 .

[0021] Figure 7 A reference for the usage status of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 1 .

[0022] Figure 8 A reference for the usage status of a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing. Figure 2 .

[0023] Figure 9 This is a flowchart of a synchronous group milling method for multi-bearing retaining ring grooves in a transmission housing.

[0024] Legend: 1. Workbench; 2. Support frame; 21. Upper cantilever beam connecting plate; 22. Side cantilever beam connecting plate; 23. Bearing support plate; 24. Base plate; 3. Gearbox; 4. Milling saw blade; 5. Multi-axis horizontal milling transmission mechanism; 51. Transmission gear; 52. Transition shaft; 53. Tool holder; 6. Bearing body; 7. Spindle connector; 8. Locking nut. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-8 This invention provides a technical solution: a synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing, comprising: Worktable 1 is installed on the lifting platform of the machine tool; A support frame 2 is connected to the crossbeam of the machine tool and located above the worktable 1. The support frame 2 includes an upper suspension beam connecting plate 21, two side suspension beam connecting plates 22, and multiple bearing support plates 23. The upper suspension beam connecting plate 21 is fixedly connected to the crossbeam of the machine tool. The two side suspension beam connecting plates 22 are respectively fixedly connected to the opposite sides of the upper suspension beam connecting plate 21. The opposite ends of the multiple bearing support plates 23 are respectively fixedly connected to two side suspension beam connecting plates 22. The bearing support plates 23 extend to the surface of the upper suspension beam connecting plate 21, and a gearbox 3 is formed between two adjacent bearing support plates 23. Multiple milling saw blades 4, whose axes are arranged parallel to each other and located within the support frame 2; A multi-axis horizontal milling transmission mechanism 5 is connected to the support frame 2 and to the machine tool spindle, and the multi-axis horizontal milling transmission mechanism 5 connects to and drives multiple milling saw blades 4 to rotate; The support frame 2 also includes a base plate 24, which is fixedly connected to two adjacent bearing support plates 23. The base plate 24 blocks the gearbox 3 to ensure the sealing of the gearbox 3 and to protect the components installed inside the gearbox 3. The multi-axis horizontal milling transmission mechanism 5 includes multiple transmission gears 51, multiple transition shafts 52, and multiple tool holders 53. The multiple transition shafts 52 are connected to two adjacent bearing support plates 23 via bearing bodies 6. The multiple transmission gears 51 are located within the gearbox 3, with adjacent transmission gears 51 meshing. The multiple tool holders 53 are arranged parallel to each other and pass through the multiple bearing support plates 23. The tool holders 53 are connected to the bearing support plates 23 via bearing bodies 6. The end of any tool holder 53 is connected to the machine tool spindle. One transmission gear 51 is fixedly connected to each tool holder 53, and the remaining transmission gears 51 are fixedly connected to the transition shafts 52. Multiple milling saw blades are also included. 4. The tool 53 connected to the main spindle connector 7 is the active tool 53, and the other tool 53s are the driven tool 53s. Under the transmission action of the transmission gear 51, the active tool 53 rotates and drives the driven tool 53 to rotate, which in turn drives the multiple milling saw blades 4 to rotate synchronously to perform milling. On the one hand, the specifications of all transmission gears 51 can be designed to be consistent. On the other hand, the transmission ratio between the gear sets of multiple transmission gears 51 can be designed according to the processing parameters. When the distance between two adjacent tool 53s is far, a corresponding number of transition shafts 52 need to be set between the two tool 53s, and the transmission gears 51 are installed on the transition shafts 52 to ensure stable linkage between multiple tool 53s. The end of any of the tool holders 53 is fixedly connected to a spindle connector 7, which facilitates the establishment of a connection between the active tool holder 53 and the machine tool spindle; The end of the tool holder 53 is screwed with a locking nut 8 for easy axial fixing; The transmission gear 51 is a helical gear to ensure smooth transmission. The milling saw blade 4 is a saw blade milling cutter, and the axis of the milling saw blade 4 coincides with the axis of the cutter bar 53.

[0027] Working principle: First, based on the position, size, and quantity of the bearing retaining ring grooves to be processed on the gearbox housing, a corresponding number of tool holders 53 and a corresponding number and size of milling saw blades 4 are set. The tool holders 53 are passed through three bearing support plates 23 and multiple milling saw blades 4, and the milling saw blades 4 are fixed to the tool holders 53. The tool holders 53 are connected to the bearing support plates 23 through the bearing body 6. The tool holders 53 are fixedly connected to the transmission gears 51 in the gearbox 3. Locking nuts 8 are screwed onto the opposite ends of the tool holders 53. On the one hand, the specifications of all transmission gears 51 can be designed to be consistent. On the other hand, the transmission ratio between the gear sets of multiple transmission gears 51 can be designed according to the processing parameters. When the distance between two adjacent tool holders 53 is far, a corresponding number of transition shafts 52 need to be set between the two tool holders 53. The transition shafts 52 are connected to the bearing support plates 23 through the bearing body 6, and the transmission gears are fixedly installed on the transition shafts 52. The machine tool uses a wheel 51 to ensure stable linkage between multiple tool holders 53. Next, the worktable 1 is fixedly installed on the machine tool's lifting platform. The upper suspension beam connecting plate 21 of the support frame 2 is connected to the machine tool's crossbeam. The spindle connector 7 on the tool holder 53 is connected to the machine tool spindle. The tool holder 53 connected to the spindle connector 7 is the active tool holder 53, while the other tool holders 53 are driven tool holders 53. Then, the gearbox housing to be processed is fixed to the worktable 1 using a fixture. Multiple milling saw blades 4 are placed in multiple bearing retaining ring grooves to be processed. Finally, the machine tool spindle rotates, driving the active tool holder 53 to rotate. Under the transmission action of the transmission gear 51, the other driven tool holders 53 rotate at the same or different speeds. By changing the feed rate of the machine tool's lifting platform, the position of the milling saw blades 4 is changed, thereby realizing the grooving processing of the gearbox housing by the milling saw blades 4 until the axis of the milling saw blades 4 coincides with the axis of the corresponding bearing retaining ring groove, thus completing the processing.

[0028] Example: S01: Based on the position, size and quantity of the bearing retaining ring groove to be processed on the gearbox housing, set a corresponding number of tool holders 53 and a corresponding number and size of milling saw blades 4; S02: Pass the tool bar 53 through multiple bearing support plates 23 and multiple milling saw blades 4, fix the milling saw blades 4 to the tool bar 53, connect the tool bar 53 to the bearing support plate 23 through the bearing body 6, fix the tool bar 53 to the transmission gear 51 in the gearbox 3, screw the locking nuts 8 to the opposite ends of the tool bar 53, and install multiple tool bars 53 in sequence; S03: Design the transmission ratio between gear sets of multiple transmission gears 51 according to the processing parameters. When the distance between two adjacent tool holders 53 is far, set a corresponding number of transition shafts 52 between the two tool holders 53. The transition shafts 52 are connected to the bearing support plate 23 through the bearing body 6, and the transmission gears 51 are fixedly installed on the transition shafts 52 to complete the assembly of the group milling device. S04: The worktable 1 is fixedly installed on the lifting platform of the machine tool. The upper suspension beam connecting plate 21 of the support frame 2 is connected to the crossbeam of the machine tool. The spindle connector 7 on the tool bar 53 is connected to the machine tool spindle. The tool bar 53 connected to the spindle connector 7 is the active tool bar 53, and the other tool bars 53 are the driven tool bars 53. S05: Fix the gearbox housing to be processed on the worktable 1 using a fixture, and place the multi-blade milling saw blade 4 in the grooves of multiple bearing retaining rings to be processed; S06: The rotation of the machine tool spindle drives the active tool holder 53 to rotate. Under the transmission action of the transmission gear 51, the other driven tool holders 53 rotate at the same speed or at different speeds. S07: Control the machine tool's lifting platform to rise and change the position of the milling saw blade 4, determine the feed rate, and the milling saw blade 4 will perform grooving on the inner wall of the bearing retaining ring groove until the axis of the milling saw blade 4 coincides with the axis of the corresponding bearing retaining ring groove, thus completing the grooving process.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing, characterized in that: include: The worktable (1) is mounted on the lifting platform of the machine tool; A support frame (2) is connected to the crossbeam of the machine tool and located above the worktable (1). The support frame (2) includes an upper suspension beam connecting plate (21), two side suspension beam connecting plates (22) and multiple bearing support plates (23). The upper suspension beam connecting plate (21) is fixedly connected to the crossbeam of the machine tool. The two side suspension beam connecting plates (22) are respectively fixedly connected to the opposite sides of the upper suspension beam connecting plate (21). The opposite ends of the multiple bearing support plates (23) are respectively fixedly connected to the two side suspension beam connecting plates (22). The bearing support plates (23) extend to the surface of the upper suspension beam connecting plate (21). A gearbox (3) is formed between two adjacent bearing support plates (23). Multiple milling saw blades (4) with their axes arranged parallel to each other and located within the support frame (2); A multi-axis horizontal milling transmission mechanism (5) is connected to the support frame (2) and the machine tool spindle, and the multi-axis horizontal milling transmission mechanism (5) connects to and drives multiple milling saw blades (4) to rotate.

2. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 1, characterized in that, The support frame (2) also includes a base plate (24), which is fixedly connected to two adjacent bearing support plates (23) and blocks the gearbox (3).

3. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 2, characterized in that, The multi-axis horizontal milling transmission mechanism (5) includes multiple transmission gears (51), multiple transition shafts (52), and multiple tool holders (53). The multiple transition shafts (52) are connected to two adjacent bearing support plates (23) through bearing bodies (6). The multiple transmission gears (51) are located in the gearbox (3), and two adjacent transmission gears (51) mesh with each other. The multiple tool holders (53) are arranged in parallel to each other and pass through multiple bearing support plates (23). The tool holders (53) are connected to the bearing support plates (23) through the bearing bodies (6). The end of any tool holder (53) is connected to the machine tool spindle. Each tool holder (53) is fixedly connected to one transmission gear (51), and the remaining transmission gears (51) are fixedly connected to the transition shafts (52). Multiple milling saw blades (4) are fixedly connected to the multiple tool holders (53).

4. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 3, characterized in that, The end of any of the tool holders (53) is fixedly connected to a spindle connector (7).

5. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 4, characterized in that, The end of the cutter bar (53) is screwed with a locking nut (8).

6. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 5, characterized in that, The transmission gear (51) is a helical gear.

7. The synchronous group milling device for multi-bearing retaining ring grooves in a transmission housing according to claim 6, characterized in that, The grooving saw blade (4) is a saw blade milling cutter, and the axis of the grooving saw blade (4) coincides with the axis of the cutter bar (53).

8. A method for synchronous group milling of multi-bearing retaining ring grooves in a transmission housing as described in any one of claims 1-7, characterized in that, Includes the following steps: 1) Based on the position, size and quantity of the bearing retaining ring groove to be processed on the gearbox housing, set a corresponding number of tool holders (53) and set a corresponding number and size of milling saw blades (4). 2) Pass the cutter bar (53) through multiple bearing support plates (23) and multiple milling saw blades (4), fix the milling saw blades (4) to the cutter bar (53), connect the cutter bar (53) and the bearing support plate (23) through the bearing body (6), fix the cutter bar (53) to the transmission gear (51) in the gearbox (3), screw the locking nuts (8) onto the opposite ends of the cutter bar (53), and install multiple cutter bars (53) in sequence. 3) Design the transmission ratio between gear sets of multiple transmission gears (51) according to the processing parameters. When the distance between two adjacent tool holders (53) is far, set a corresponding number of transition shafts (52) between the two tool holders (53). The transition shafts (52) are connected to the bearing support plate (23) through the bearing body (6), and the transmission gears (51) are fixedly installed on the transition shafts (52) to complete the assembly of the group milling device. 4) Fix the worktable (1) on the lifting platform of the machine tool, connect the upper suspension beam connecting plate (21) of the support frame (2) with the crossbeam of the machine tool, connect the spindle connector (7) on the tool bar (53) to the machine tool spindle, and the tool bar (53) connected to the spindle connector (7) is the active tool bar (53), while the other tool bars (53) are the driven tool bars (53). 5) Fix the gearbox housing to be processed on the worktable (1) using a fixture, and place the multi-slot milling saw blade (4) in the slots of multiple bearing retaining rings to be processed; 6) The rotation of the machine tool spindle drives the active tool bar (53) to rotate. Under the transmission action of the transmission gear (51), the other driven tool bars (53) rotate at the same speed or at different speeds. 7) Control the machine tool's lifting platform to rise to change the position of the milling saw blade (4), determine the feed rate, and the milling saw blade (4) will perform grooving on the inner wall of the bearing retaining ring groove until the axis of the milling saw blade (4) coincides with the axis of the corresponding bearing retaining ring groove, thus completing the grooving process.

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