High-precision self-checking five-axis linkage bearing seat milling assembly

Abstract

The application discloses a high-precision self-checking type five-axis linkage bearing seat milling assembly and belongs to the technical field of mechanical high-precision machine tools, which comprises a horizontally arranged bed body, a vertical workbench, a semi-open milling chamber and a waste groove; further comprises three sets of linear transmission devices and milling cutters; further comprises two sets of rotary transmission devices and milling positioning seats; further comprises an electric contact precision self-checking system installed in the linear transmission device; the electric contact precision self-checking system comprises an alarm device and a trigger device used in cooperation with the alarm device. The bearing seat milling assembly integrates the electric contact precision self-checking system in the linear transmission device, and when the sliding block slides along the linear sliding rail, the wear condition of the contact surface (especially the side surface) of each linear sliding rail can be monitored online; when the sliding rail wear causes the sliding block gap to increase, the alarm will be triggered immediately, the worn sliding rail position is accurately positioned, and the hysteresis and ambiguity caused by the "experience backstepping" in the traditional technology are avoided.

Description

Technical Field

[0001] This invention relates to the field of high-precision machine tool technology, specifically a high-precision self-inspection type five-axis linkage bearing housing milling assembly. Background Technology

[0002] Five-axis CNC milling machine tools are core equipment in the field of precision machining, and their machining accuracy directly affects the dimensions, geometric tolerances, and surface quality of parts. For parts such as bearing housings that require extremely high installation accuracy (e.g., mating surfaces with bearings and shafts), multi-faceted and multi-angle milling is achieved through five-axis CNC machine tools. Existing five-axis CNC machine tools typically use linear guideways to achieve the linear motion of the slide table in their XYZ axis linear transmission devices. However, under long-term high-load, high-frequency reciprocating motion, linear guideways are prone to wear due to friction, insufficient lubrication, or external impacts (manifesting as increased surface roughness and increased straightness deviation). Guideway wear directly affects the positioning accuracy and repeatability of the slide table, thereby reducing the machining quality of the bearing housing.

[0003] Currently, the detection of slide rail wear mainly relies on two methods: one is that engineers periodically stop the machine for inspection based on experience, determining the replacement cycle by observing wear marks on the slide rail surface and measuring the slide table movement clearance; the other is to infer potential slide rail wear by detecting defects in the machined bearing seats (such as dimensional deviations), but it is impossible to accurately locate the specific worn slide rail position (such as the left slide rail of the X-axis or the right slide rail of the Z-axis). These methods suffer from defects such as detection lag and ambiguous positioning, which may lead to batch scrapping of parts due to undetected slide rail wear during processing, or excessive maintenance resulting in wasted costs.

[0004] Therefore, there is an urgent need for a high-precision five-axis linkage milling machine that can monitor the wear condition of the slide rail in real time and accurately locate the wear position, so as to improve the processing quality and maintenance efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-precision self-inspection five-axis linkage bearing housing milling assembly. By integrating an electro-contact precision self-inspection system into the linear transmission device, the wear condition of the slide rail is monitored in real time, and the wear position is accurately located, thus solving the problems of lagging slide rail wear detection and ambiguous positioning in traditional technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-precision self-checking five-axis linkage bearing housing milling assembly includes a horizontally arranged bed, a vertical worktable fixed above the bed, a semi-open milling chamber located in front of the worktable, and a scrap chute located on the bed and directly below the semi-open milling chamber; it also includes three sets of linear transmission devices mounted above the worktable and moving linearly along the X, Y, and Z axes respectively, and milling cutters located in the semi-open milling chamber and facing downwards; it also includes two sets of rotary transmission devices mounted below the worktable and rotating along the XY and Z axes respectively, and milling positioning seats located in the semi-open milling chamber and facing upwards; the core invention point is: it also includes a milling positioning seat mounted on... An electro-contact precision self-testing system is included in the linear drive mechanism. This system comprises an alarm device and a triggering device used in conjunction with the alarm device. The alarm device and triggering device are respectively installed between two sliding blocks within the linear drive mechanism, both parallel to the linear guide rail. When the sliding blocks of the linear drive mechanism move linearly normally and the linear guide rail is not worn, the alarm device and triggering device do not contact each other, and the electro-contact precision self-testing system does not alarm. When the sliding blocks of the linear drive mechanism move linearly normally and the linear guide rail is worn, the alarm device and triggering device contact each other, and the electro-contact precision self-testing system alarms.

[0008] By adopting the above solution, the bearing housing milling assembly integrates an electro-contact precision self-inspection system within the linear transmission device. When the slide block slides along the linear guide rail, the wear condition of the contact surface (especially the side) of each linear guide rail can be monitored online. When the wear of the guide rail causes the slide block clearance to increase, an alarm will be triggered immediately, accurately locating the worn guide rail position (such as each guide rail of the X / Y / Z axis), avoiding the lag and ambiguity caused by "experience-based back deduction" in traditional technology.

[0009] In a preferred embodiment of a high-precision self-checking five-axis linkage bearing housing milling assembly, the three linear transmission devices are an X-axis linear slide, a Y-axis linear slide, and a Z-axis linear slide. The X-axis linear slide includes two parallel X-axis linear guides fixed above a vertical worktable and an X-axis slide block slidably mounted on the two X-axis linear guides. The Y-axis linear slide includes two parallel Y-axis linear guides fixed in front of the X-axis slide block and a Y-axis slide block slidably mounted on the two Y-axis linear guides. The Z-axis linear slide includes two parallel Z-axis linear guides fixed in front of the Y-axis linear slide and a Z-axis slide block slidably mounted on the two Z-axis linear guides, wherein the milling tool is fixed below the Z-axis slide block. Through the linear motion of the linear slides on the XYZ axes, the tool can be flexibly fed to the bearing housing.

[0010] As a preferred embodiment of a high-precision self-inspection five-axis linkage bearing housing milling assembly, the two sets of rotary transmission devices are XY-axis swing tables and Z-axis rotary tables, which are used to realize multi-angle rotational positioning of the workpiece; the Z-axis rotary table is rotatably installed inside the XY-axis swing table, where the XY axis is the axis that bisects the X-axis and Y-axis; the milling positioning seat is coaxially fixed above the Z-axis rotary table and is used to clamp the bearing housing workpiece, and the circumferential machining of the workpiece is realized by the rotation of the Z-axis rotary table.

[0011] In a preferred embodiment of a high-precision self-checking five-axis linkage bearing housing milling assembly, the alarm device includes an alarm mounting base parallel to the linear guide rail, guide rods fixedly connected to the left and right ends of the alarm mounting base with at least two rods perpendicular to the length direction of the alarm mounting base at each end, two insulating slides mounted on the guide rods, two conductors parallel to the linear guide rail connecting the two insulating slides on the same horizontal plane, and an audible and visual alarm mounted on the left end of the alarm mounting base and electrically connected to the conductors. The two conductors on the upper insulating slide and the audible and visual alarm together form an upper closed circuit, and the two conductors on the lower insulating slide and the audible and visual alarm together form a lower closed circuit. The upper and lower closed circuits are connected in parallel; a gap exists between the two conductors connected on the same horizontal plane of the insulating slide. The triggering device includes an insulating mounting base fixed to the slide and two trigger coils fixed to the insulating mounting base. The two trigger coils are located between the upper closed circuit and the lower closed circuit and are equidistant from the upper and lower closed circuits, respectively. When a trigger coil contacts the upper or lower closed circuit, the trigger coil simultaneously contacts two conductors in the upper or lower closed circuit. During normal operation, the slide moves smoothly along the linear guide rail, and the triggering device moves synchronously with the slide. Because the linear guide rail is not worn, the gap between the slide block and the linear guide rail remains within the design range. There is no contact between the trigger coil and the conductor of the alarm device, the upper and lower closed circuits are not connected, and the audible and visual alarm does not sound. When the linear guide rail wears down due to long-term use (such as surface scratches or increased straightness deviation), the gap between the slide block and the linear guide rail increases. When the slide block moves, one of the upper or lower closed circuits will move closer to the trigger coil until the trigger coil contacts the upper or lower conductor, causing the upper or lower closed circuit to connect (forming a loop through the trigger coil, conductor, and audible and visual alarm). The audible and visual alarm will sound an alarm, indicating that the slide rail at that position (such as the left slide rail of the X-axis, the right slide rail of the Z-axis, etc.) is worn and needs to be replaced in time.

[0012] As a preferred embodiment of a high-precision self-checking five-axis linkage bearing housing milling assembly, the alarm device further includes a central shaft fixed to the right end of the alarm mounting base, an adjustable elliptical disk coaxially rotatably mounted on the central shaft and located between two insulating slides, a rotary handwheel coaxially fixed to the front side of the adjustable elliptical disk, a self-locking nut threaded onto the central shaft and capable of bending and tightening the rotary handwheel, and a spring fitted onto a guide rod and pushing the two insulating slides relative to each other; wherein the adjustable elliptical disk simultaneously abuts against the two insulating slides located at the right end of the alarm mounting base. By adjusting the rotation angle of the adjustable elliptical disk (rotating the handwheel), the distance between the two insulating slides can be changed, thereby adjusting the initial contact gap between the trigger guide ring and the conductor, adapting to the detection requirements of different wear levels (such as different precision requirements in roughing and finishing stages).

[0013] The beneficial effects of this invention are as follows:

[0014] 1. Real-time monitoring and precise positioning: By integrating an electro-contact precision self-testing system into the linear transmission device, the wear condition of each linear slide rail contact surface (especially the side) can be monitored online when the slide rail slides along the linear slide rail. When the slide rail wear causes the slide rail clearance to increase, an alarm will be triggered immediately, and the position of the worn slide rail (such as each slide rail of the X / Y / Z axis) can be accurately located, avoiding the lag and ambiguity caused by "experience back deduction" in traditional technology.

[0015] 2. Simple structure and low cost: The alarm device and triggering device both use common mechanical and electronic components such as guide rods, insulated slides, and conductors, which are integrated into the linear transmission device. They do not require additional equipment space and have low maintenance costs.

[0016] 3. Flexible adjustment and strong adaptability: The trigger gap can be adjusted by adjusting the elliptical disk, which can not only improve the offset of the insulating slide spacing caused by temperature changes or assembly errors, but also adapt to the wear detection needs under different working conditions (such as different accuracy requirements in the roughing and finishing stages).

[0017] 4. Ensure machining accuracy and efficiency: Promptly detect and replace worn slide rails to avoid bearing housing machining deviations caused by decreased slide rail accuracy, reduce scrap rate, and improve production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1Three-dimensional structure for high-precision self-inspection five-axis linkage bearing housing milling assembly Figure 1 ;

[0020] Figure 2 Three-dimensional structure for high-precision self-inspection five-axis linkage bearing housing milling assembly Figure 2 ;

[0021] Figure 3 The front view of the high-precision self-inspection five-axis linkage bearing housing milling assembly;

[0022] Figure 4 A top view of the high-precision self-inspection five-axis linkage bearing housing milling assembly;

[0023] Figure 5 This is a three-dimensional structural diagram of a linear transmission device;

[0024] Figure 6 A three-dimensional structure for a rotary transmission device Figure 1 ;

[0025] Figure 7 A three-dimensional structure for a rotary transmission device Figure 2 ;

[0026] Figure 8 A three-dimensional structural diagram for monitoring the Y-axis linear slide using an electro-contact precision self-testing system;

[0027] Figure 9 A 3D structural diagram of an electro-contact precision self-testing system;

[0028] Figure 10 This is a three-dimensional structural diagram of the left half of the alarm device;

[0029] Figure 11 This is a three-dimensional structural diagram of the right half of the alarm device;

[0030] Figure 12 This is a three-dimensional structural diagram of the triggering device.

[0031] Reference numerals: 1-Bed; 2-Vertical worktable; 3-Semi-open milling chamber; 4-Scrap trough; 5-X-axis linear slide; 51-X-axis linear guide rail; 52-X-axis slide block; 6-Y-axis linear slide; 61-Y-axis guide rail; 62-Y-axis slide block; 7-Z-axis slide; 71-Z-axis guide rail; 72-Z-axis slide block; 8-Milling cutter; 9-XY-axis swing table; 10-Z-axis rotary table; 11-Milling positioning seat; 12-Alarm assembly; 121-Alarm mounting base; 122-Guide rod; 123-Insulated slide block; 124-Conductor; 125-Audible and visual alarm; 126-Central shaft; 127-Adjustable elliptical disc; 128-Rotating handwheel; 129-Self-locking nut; 1210-Spring; 13-Trigger assembly; 131-Insulated mounting base; 132-Trigger guide ring. Detailed Implementation

[0032] 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.

[0033] like Figures 1 to 9As shown, a high-precision self-checking five-axis linkage bearing housing milling assembly requires a five-axis linkage machine tool to perform multi-face (such as mating surfaces with bearings and shaft parts) and multi-angle milling operations. It includes a horizontally positioned bed 1, a vertical worktable 2 fixed above the bed 1, a semi-open milling chamber 3 located in front of the worktable 2, and a scrap trough 4 located on the bed 1 and directly below the semi-open milling chamber 3. It also includes three sets of linear transmission devices mounted above the worktable 2 and moving linearly along the X, Y, and Z axes respectively, and milling cutters 8 located downwards within the semi-open milling chamber 3; and two sets of rotary transmission devices mounted below the worktable 2 and rotating along the XY and Z axes respectively, and located within the semi-open milling chamber. The core invention is that it also includes an electro-contact precision self-testing system installed in the linear transmission device; the electro-contact precision self-testing system includes an alarm device and a trigger device used in conjunction with the alarm device; the alarm device and the trigger device are respectively installed between two slides that slide against each other in the linear transmission device, and both the alarm device and the trigger device are parallel to the linear guide rail in the linear transmission device; when the slides of the linear transmission device move linearly normally and the linear guide rail is not worn, the alarm device and the trigger device do not contact each other, and the electro-contact precision self-testing system does not alarm; when the slides of the linear transmission device move linearly normally and the linear guide rail is worn, the alarm device and the trigger device contact each other, and the electro-contact precision self-testing system alarms. This bearing housing milling assembly integrates an electro-contact precision self-checking system within the linear transmission device. As the slide block slides along the linear guide rail, it can monitor the wear condition of each linear guide rail contact surface (especially the side). When the guide rail wear causes the slide block clearance to increase, an alarm will be triggered immediately, accurately locating the worn guide rail position (such as the left / right guide rail of the X / Y / Z axis), avoiding the lag and ambiguity caused by "experience-based back deduction" in traditional technology.

[0034] like Figure 5 As shown, the three sets of linear transmission devices (the drive motors are omitted in the figure) are X-axis linear slide 5, Y-axis linear slide 6, and Z-axis linear slide 7. X-axis linear slide 5 includes two parallel X-axis linear slide rails 51 fixed above the vertical worktable 2 and an X-axis slide block 52 slidably mounted on the two X-axis linear slide rails 51. Y-axis linear slide 6 includes two parallel Y-axis linear slide rails 61 fixed in front of the X-axis slide block 52 and a Y-axis slide block 62 slidably mounted on the two Y-axis linear slide rails 61. Z-axis linear slide 7 includes two parallel Z-axis linear slide rails 71 fixed in front of the Y-axis linear slide 6 and a Z-axis slide block 72 slidably mounted on the two Z-axis linear slide rails 71, wherein the milling cutter 8 is fixed below the Z-axis slide block 72. Through the linear motion of the linear slides on the XYZ axes, the tool can be flexibly fed to the bearing seat.

[0035] like Figures 6 to 7 As shown, the two sets of rotary transmission devices (the drive motors are omitted in the figure) are the XY-axis swing table 9 and the Z-axis turntable 10, which are used to realize multi-angle rotational positioning of the workpiece. The Z-axis turntable 10 is rotatably installed inside the XY-axis swing table 9, where the XY axis is the axis that is bisected between the X-axis and the Y-axis. The milling positioning seat 11 is coaxially fixed above the Z-axis turntable 10 and is used to clamp the bearing seat workpiece. The circumferential machining of the workpiece is realized by the rotation of the Z-axis turntable 10.

[0036] like Figures 8 to 12 As shown, the alarm device includes an alarm mounting base 121 parallel to the linear slide rail, guide rods 122 fixedly connected to the left and right ends of the alarm mounting base 121 with at least two rods perpendicular to the length direction of the alarm mounting base 121 at each end, two insulating slide blocks 123 mounted on the guide rods 122, two conductors 124 (copper busbars) parallel to the linear slide rail and connecting the two insulating slide blocks 123 located on the same horizontal plane, and an audible and visual alarm 125 mounted on the left end of the alarm mounting base 121 and electrically connected to the conductors 124. The two conductors 124 on the upper insulating slide block 123 and the audible and visual alarm 125 together form an upper closed circuit, and the two conductors 124 on the lower insulating slide block 123 and the audible and visual alarm 125 together form a lower closed circuit. The upper closed circuit and the lower closed circuit are connected in parallel; there is a gap between the two conductors 124 connected on the same horizontal plane of the insulating slide block 123. The triggering device includes an insulating mounting base 131 fixed on the slide and two trigger coils 132 (copper sheets) fixed on the insulating mounting base 131. The two trigger coils 132 are located between the upper closed circuit and the lower closed circuit and are equidistant from the upper closed circuit and the lower closed circuit, respectively. When the trigger coil 132 contacts the upper closed circuit or the lower closed circuit, the trigger coil 132 simultaneously contacts the two conductors 124 in the upper closed circuit or the lower closed circuit. During normal operation, the slide moves smoothly along the linear slide rail, and the triggering device moves synchronously with the slide. Since the linear guide rail is not worn, the gap between the slide block and the linear guide rail remains within the design range. There is no contact between the trigger coil 132 and the conductor 124 of the alarm device, the upper and lower closed circuits are not connected, and the audible and visual alarm 125 does not sound. When the linear guide rail is worn due to long-term use (such as surface scratches or increased straightness deviation), the gap between the slide block and the linear guide rail increases. When the slide block moves, one of the upper or lower closed circuits will move closer to the location of the trigger coil 132 until the trigger coil 132 contacts the upper or lower conductor 124, causing the upper or lower closed circuit to be connected (forming a loop through the trigger coil 132, conductor 124, and audible and visual alarm 125). The audible and visual alarm 125 will sound an alarm, indicating that the slide rail at this position (such as the left slide rail of the X-axis, the right slide rail of the Z-axis, etc.) is worn and needs to be replaced in time.

[0037] like Figure 11 As shown, the alarm device also includes a central shaft 126 fixed to the right end of the alarm mounting base 121, an adjustable elliptical disk 127 coaxially rotatably mounted on the central shaft 126 and located between two insulating slides 123, a rotating handwheel 128 coaxially fixed to the front side of the adjustable elliptical disk 127, a self-locking nut 129 threadedly mounted on the central shaft 126 and capable of bending and tightening the rotating handwheel 128, and a spring 1210 fitted on the guide rod 122 and pushing the two insulating slides 123 to slide relative to each other; wherein the adjustable elliptical disk 127 simultaneously abuts against the two insulating slides 123 located at the right end of the alarm mounting base 121. By adjusting the rotation angle of the adjustable elliptical disk 127 (rotating handwheel 128), the distance between the two insulating slides 123 can be changed, thereby adjusting the initial contact gap between the trigger guide coil 132 and the conductor 124 to adapt to the detection requirements of different wear levels (such as different accuracy requirements in roughing and finishing stages).

[0038] Working principle of the invention:

[0039] During processing, such as Figures 1 to 7 As shown, the X-axis slide 52 moves along the X-axis slide rail (driven by the X-axis drive motor, which is omitted in the figure), driving the Y-axis linear slide 6, the Z-axis linear slide 7 and the milling cutter 8 to move synchronously. In conjunction with the swing of the XY-axis swing table 9 and the rotation of the Z-axis rotary table 10, the bearing seat is installed on the milling positioning seat 11 for multi-angle milling. For detailed bearing seat machining steps, please refer to existing patents and technical papers.

[0040] During monitoring, taking the monitoring of the Y-axis linear slide 6 as an example, such as... Figures 8 to 12 As shown, when the Y-axis linear slide rail 61 is not worn, the Y-axis slide block 62 moves linearly along the Y-axis linear slide rail 61. The trigger coil 132 of the trigger component 13 and the conductor 124 of the alarm component 12 maintain a gap, the upper and lower closed circuits are both disconnected, and the audible and visual alarm 125 does not alarm.

[0041] When the Y-axis linear slide rail 61 develops localized depressions or protrusions due to wear, the movement trajectory of the Y-axis slide block 62 deviates. The trigger coil 132 will contact the upper conductor 124 or the lower conductor 124, causing the corresponding closed circuit to be connected. The audible and visual alarm 125 will emit a red light and a buzzer sound to sound an alarm, and the machine tool will stop working, indicating that the Y-axis linear slide rail 61 is worn and requires targeted maintenance.

[0042] Gap adjustment compensation operation: If the spacing of the insulating slide 123 is offset due to temperature changes or assembly errors, the rotating handwheel 128 can be rotated to push the upper and lower insulating slides 123 along the guide rod 122 through the elliptical surface of the adjusting elliptical disk 127 to adjust the initial spacing; after adjustment, the self-locking nut 129 is rotated to tighten the rotating handwheel 128, thereby completing the fixation; secondly, by adjusting the initial spacing, it is also possible to adapt to the detection requirements of different wear levels (such as different accuracy requirements in the roughing and finishing stages).

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision self-inspection type five-axis linkage bearing housing milling assembly, comprising a horizontally arranged bed, a vertical worktable fixed above the bed, a semi-open milling chamber opened in front of the vertical worktable, and a scrap trough opened on the bed and located directly below the semi-open milling chamber. It also includes three sets of linear transmission devices mounted above the vertical worktable and moving linearly along the X-axis, Y-axis and Z-axis respectively, as well as milling cutters located in the semi-open milling chamber and facing downwards; It also includes two sets of rotary transmission devices installed under the vertical worktable and rotating and moving along the XY and Z axes respectively, as well as a milling positioning seat located in the semi-open milling chamber and facing upwards; Its features are: It also includes an electro-contact precision self-testing system installed in the linear transmission device; the electro-contact precision self-testing system includes an alarm device and a triggering device used in conjunction with the alarm device; the alarm device and the triggering device are respectively installed between two sliding blocks in the linear transmission device that slide against each other, and both the alarm device and the triggering device are parallel to the linear slide rail in the linear transmission device; When the slide of the linear drive moves normally and the linear guide rail is not worn, the alarm device and the trigger device do not contact each other, and the electric contact precision self-test system does not alarm; when the slide of the linear drive moves normally and the linear guide rail is worn, the alarm device and the trigger device contact each other, and the electric contact precision self-test system alarms. The alarm device includes an alarm mounting base parallel to the linear slide rail, two guide rods fixedly connected to the left and right ends of the alarm mounting base with at least two rods perpendicular to the length direction of the alarm mounting base at each end, two insulating slides mounted on the guide rods, two conductors parallel to the linear slide rail and connecting the two insulating slides on the same horizontal plane, and an audible and visual alarm mounted on the left end of the alarm mounting base and electrically connected to the conductors. The two conductors on the upper insulating slide and the audible and visual alarm together form an upper closed circuit, and the two conductors on the lower insulating slide and the audible and visual alarm together form a lower closed circuit. The upper closed circuit and the lower closed circuit are connected in parallel. There is a gap between the two conductors connected on the same horizontal plane of the insulating slide. The triggering device includes an insulating mounting base fixed on the slide and two triggering coils fixed on the insulating mounting base; the two triggering coils are located between the upper closed circuit and the lower closed circuit and are equidistant from the upper closed circuit and the lower closed circuit respectively; when the triggering coil contacts the upper closed circuit or the lower closed circuit, the triggering coil simultaneously contacts two conductors in the upper closed circuit or the lower closed circuit.

2. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 1, characterized in that: The three sets of linear transmission devices are the X-axis linear slide, the Y-axis linear slide, and the Z-axis linear slide.

3. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 2, characterized in that: The X-axis linear slide table includes two parallel X-axis linear slide rails fixed above the vertical worktable and an X-axis slide block slidably mounted on the two X-axis linear slide rails.

4. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 3, characterized in that: The Y-axis linear slide includes two parallel Y-axis linear slide rails fixed in front of the X-axis slide block, and a Y-axis slide block slidably mounted on the two Y-axis linear slide rails.

5. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 4, characterized in that: The Z-axis linear slide includes two parallel Z-axis linear slide rails fixed in front of the Y-axis linear slide and a Z-axis slide block slidably mounted on the two Z-axis linear slide rails, wherein the milling cutter is fixed below the Z-axis slide block.

6. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 1, characterized in that: The two sets of rotary transmission devices are the XY-axis swing table and the Z-axis turntable; the Z-axis turntable is rotatably installed inside the XY-axis swing table, wherein the milling positioning seat is coaxially fixed above the Z-axis turntable.

7. The high-precision self-inspection type five-axis linkage bearing housing milling assembly according to claim 1, characterized in that: The alarm device also includes a central shaft fixed to the right end of the alarm mounting base, an adjustable elliptical disk coaxially rotatably mounted on the central shaft and located between two insulating slides, a rotating handwheel coaxially fixed to the front side of the adjustable elliptical disk, a self-locking nut threaded onto the central shaft and capable of bending and tightening the rotating handwheel, and a spring fitted onto the guide rod and pushing the two insulating slides relative to each other; wherein the adjustable elliptical disk simultaneously abuts against the two insulating slides located at the right end of the alarm mounting base.

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