Multi-station synchronous milling part keyway processing machine tool

Abstract

The invention discloses a multi-station synchronous milling part keyway processing machine tool, and relates to the technical field of keyway milling. The multi-station synchronous milling part key groove machining tool comprises a milling cutter arranged on a milling machine, the milling cutter comprises cutting edges and cutting edge roots, and radial limiting supporting mechanisms are arranged in the side direction of the cutting edge roots and used for limiting radial deflection of the milling cutter in the cutting counter-force direction. A cutter length detection mechanism is arranged below each Z-axis sliding table and used for detecting the axial abrasion loss of the milling cutter. According to the multi-station synchronous milling part keyway processing machine tool, through the collaborative design of the radial limiting supporting mechanism and the cutter length detection mechanism, milling cutter anti-deflection supporting and multi-milling cutter abrasion independent detection compensation are integrated, and the technical problems that existing multi-station keyway milling equipment is insufficient in processing precision and poor in consistency are effectively solved; and the part keyway machining quality is improved.

Description

Technical Field

[0001] This invention relates to the field of keyway milling technology, specifically to a multi-station synchronous milling machine tool for keyway machining of parts. Background Technology

[0002] In the field of batch processing of keyways for shaft parts, multi-station synchronous milling machine tools have become core equipment for improving production efficiency due to their advantage of completing the processing of multiple parts in one clamping. They are widely used in automated production lines for shaft parts in industries such as automobiles and machinery, and belong to the intelligent manufacturing equipment industry.

[0003] CN105414632B discloses a keyway machining mechanism with double milling cutters. However, existing multi-station synchronous milling machine tools for keyway machining still have several difficult-to-solve technical problems in actual machining: the milling cutters are prone to radial runout and elastic deformation under the action of cutting reaction force, making it difficult to guarantee the keyway depth and symmetry; the wear degree of multiple tools is inconsistent when working synchronously, and traditional equipment cannot independently detect and accurately compensate for the axial wear of each tool, resulting in different keyway depths at each station and poor batch processing consistency, which cannot meet the requirements of high-precision and high-stability keyway machining and affects the machining quality of keyways. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-station synchronous milling machine tool for keyway machining of parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-station synchronous milling machine tool for keyway machining, comprising an X-axis moving module and a YZ-axis moving module disposed on the milling machine. The X-axis moving module is connected to a worktable, and multiple fixtures are detachably connected to the top of the worktable. The YZ-axis moving module includes a Y-axis slide and multiple arrayed Z-axis slides, and each Z-axis slide includes a spindle. A milling cutter is detachably connected to the spindle, and the milling cutter includes a cutting edge and a cutting edge root. A radial limiting support mechanism is provided laterally on each cutting edge root to limit the radial runout of the milling cutter in the cutting reaction force direction. A tool length detection mechanism is provided below each Z-axis slide to detect the axial wear of the milling cutter.

[0006] The radial limiting support mechanism includes a movable block, and a movable mechanism is provided between the movable block and the Z-axis slide. The side wall of the movable block is connected to a U-shaped frame through a telescopic mechanism, and the side wall of the U-shaped frame is rotatably connected to a support wheel through a rotating shaft. The outer circumferential surface of the support wheel rolls and fits against the root of the cutting edge.

[0007] The tool length detection mechanism includes an L-shaped rotating frame, which is rotatably connected to the side wall of a U-shaped frame via a rotating mechanism. A detection disk is connected to the top of the rotating frame via a lifting mechanism, and a first distance sensor is fixedly inserted into the top of the rotating frame.

[0008] Preferably, the telescopic mechanism includes two symmetrically arranged first sleeves fixedly connected to the side wall of the movable block, and a first sleeve rod is inserted into the first sleeve. The other end of the first sleeve rod is fixed to the side wall of the U-shaped frame, and a first spring is connected between the first sleeve rod and the first sleeve. A second distance sensor is fixedly inserted into the side wall of the movable block, and a limiting mechanism for limiting the first sleeve rod is provided on the top of the movable block.

[0009] Preferably, the limiting mechanism includes multiple limiting holes formed on the side wall of the first sleeve, and an insertion hole is formed on the top of the first sleeve. The top of the moving block is connected to a lifting block through a first lifting assembly, and the bottom of the lifting block is fixedly connected to two symmetrically arranged pins.

[0010] Preferably, the first lifting assembly includes an L-shaped block fixedly connected to the top of the movable block, and the bottom of the L-shaped block is connected to the top of the lifting block via a first spring telescopic rod. A first electromagnet is fixedly connected to the top of the L-shaped block, and a first iron block is fixedly connected to the top of the lifting block.

[0011] Preferably, the moving mechanism includes a first fixed plate fixedly connected to the bottom of the Z-axis slide, and the side wall of the first fixed plate is connected to the side wall of the moving block through a second spring telescopic rod. A fixed tube is fixedly inserted into the side wall of the first fixed plate, and a moving rod is inserted into the fixed tube. The other end of the moving rod is fixed to the side wall of the moving block, and the end of the fixed tube is connected to a first flexible tube. The bottom of the Y-axis slide is provided with a fluid supply mechanism for supplying hydraulic oil into the first flexible tube.

[0012] Preferably, the liquid supply mechanism includes a second fixed plate fixedly connected to the bottom of the Y-axis slide, and a liquid storage tank is fixedly connected to the side wall of the second fixed plate. The liquid storage tank is connected to the first flexible hose through a connecting pipe, and the liquid storage tank is filled with hydraulic oil. A gravity plate is connected to the liquid storage tank through a second lifting assembly.

[0013] Preferably, the second lifting assembly includes two first lifting rods inserted into the top of the liquid storage tank, with the lower end of the first lifting rods fixed to the top of the gravity plate, a second iron block fixedly connected to the upper end of the first lifting rods, an mounting block fixedly connected to the side wall of the second fixing plate, and a second electromagnet fixedly connected to the bottom of the mounting block.

[0014] Preferably, the lifting mechanism includes a flow channel disposed within the rotating frame, and the flow channel is connected to a fixed pipe via a second flexible hose. A working pipe is fixedly inserted into the bottom of the rotating frame, and the working pipe is connected to the flow channel. A second lifting rod is inserted into the working pipe, and the upper end of the second lifting rod is fixed to the bottom of the detection plate. The detection plate is connected to the bottom of the rotating frame via a third spring telescopic rod.

[0015] Preferably, the rotating mechanism includes a rotating rod that rotates on the side wall of the U-shaped frame, and the rotating frame is fixedly sleeved on the side wall of the rotating rod. A gear is fixedly sleeved on the side wall of the rotating rod, and a connecting plate is fixedly connected to the side wall of the U-shaped frame. A fixing rod is fixedly connected to the side wall of the connecting plate, and a rack is sleeved on the side wall of the fixing rod. The rack meshes with the gear, and a second spring is sleeved on the side wall of each fixing rod. The movement of the rack is driven by a pushing assembly.

[0016] Preferably, the pushing component includes a groove formed on the side wall of the U-shaped frame, and a lifting frame is slidably connected in the groove, with both ends of the lifting frame fixed to the lifting block and the rack, respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This multi-station synchronous milling machine tool for keyway machining, through the installation of a radial limiting support mechanism, first clamps and fixes multiple parts using a fixture during keyway milling. Then, the second electromagnet is de-energized, ceasing to attract the second iron block. The gravity plate moves downwards along the reservoir under gravity, compressing the hydraulic oil within. This hydraulic oil then flows through the connecting pipe and the first hose into multiple fixed pipes. Under hydraulic pressure, a moving rod is pushed, causing a moving block to move. Simultaneously, the second spring telescopic rod is stretched. When the moving block moves, it drives the U-shaped frame and support wheel via a telescopic mechanism, causing the support wheel to contact the side wall at the root of the cutting edge. At the same time, the first spring is compressed. Next, the spindle is started, rotating the milling cutter and consequently the support wheel. At this point, a second distance sensor detects changes in the distance of the U-shaped frame. This system can detect the runout of the milling cutter, ensuring the quality of subsequent keyway milling. Furthermore, it ensures the abutment contact between the support wheel and the side wall of the cutting edge root even when wear occurs on the support wheel and the root of the cutting edge. When the runout of the milling cutter is within acceptable limits, the first electromagnet is de-energized, no longer attracting the first iron block. The lifting block and the pin can then move downwards and reset under the action of the first spring telescopic rod, driving the pin through the insertion hole and into the limiting hole. At this point, the first sleeve rod is limited, making the first sleeve and the first sleeve rod form a whole, ensuring the radial limiting support effect of the support wheel on the milling cutter. Then, the milling cutter is moved in the Y-axis direction and lowered in the Z-axis direction via the Y-axis slide and Z-axis slide. Simultaneously, the part is moved to the left in the X-axis direction via the X-axis moving module, realizing the keyway milling operation on the part. This limits the radial runout and elastic deformation of the milling cutter during the cutting process, ensuring the stability of the milling cutter's cutting position and improving the machining accuracy of the keyway.

[0019] This type of multi-station synchronous milling machine tool for keyway machining, by incorporating a tool length detection mechanism, allows hydraulic oil to flow into the rotating frame's channel before keyway milling, when it enters the fixed pipe. Then, it enters the working pipe, where, under hydraulic pressure, it pushes the second lifting rod upwards, simultaneously moving the detection disc upwards. Simultaneously, the third spring telescopic rod is stretched. When the detection disc abuts against the bottom of the cutting edge, it stops moving. At this point, the distance to the detection disc is detected by a first distance sensor, allowing the length of each milling cutter to be measured, thereby determining the axial wear of each cutter. The Z-axis slide compensates for wear, identifying wear differences between multiple milling cutters and performing independent depth compensation based on their respective wear amounts. This ensures consistent keyway depth across all parts, improving keyway machining accuracy. After inspection, when the lifting block moves downward, it drives the lifting frame to slide down the slideway. Simultaneously, it drives the rack to move downward along the fixed rod, compressing the second spring. When the rack moves downward, it drives the gear to rotate clockwise, which in turn drives the rotating frame to rotate 180 degrees upward via the rotating rod. This also causes the inspection disc to rotate synchronously to avoid collisions, ensuring the normal operation of subsequent keyway milling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the liquid supply mechanism in this invention;

[0022] Figure 3 This is a schematic diagram of the spindle and milling cutter in this invention;

[0023] Figure 4 This is a schematic diagram of the spindle and milling cutter from another perspective in this invention;

[0024] Figure 5 This is a schematic diagram of the radial limiting support mechanism in this invention;

[0025] Figure 6 This is a schematic diagram showing the position of the radial limiting support mechanism in this invention;

[0026] Figure 7 This is a schematic diagram of the tool length detection mechanism in this invention;

[0027] Figure 8 This is a schematic diagram of the overall structure of the radial limiting support mechanism and the tool length detection mechanism in this invention;

[0028] Figure 9 This is a partial cross-sectional view of the liquid storage tank in this invention;

[0029] Figure 10 for Figure 5A magnified structural diagram of point A in the middle.

[0030] In the diagram: 101, YZ axis moving module; 102, Y-axis slide; 103, Z-axis slide; 104, spindle; 105, milling cutter; 106, X axis moving module; 107, worktable; 108, fixture; 109, cutting edge; 110, cutting edge root; 201, first sleeve; 202, first sleeve rod; 203, second distance sensor; 301, limiting hole; 302, insertion hole; 303, lifting block; 304, pin; 401, L-shaped block; 402, first spring telescopic rod; 403, first electromagnet; 404, first iron block; 501, first fixing plate; 502, second spring telescopic rod; 503, fixing tube; 504, moving rod; 505, first flexible hose; 6 01. Second fixed plate; 602. Liquid storage tank; 603. Connecting pipe; 604. Gravity plate; 701. First lifting rod; 702. Second iron block; 703. Mounting block; 704. Second electromagnet; 801. Second flexible hose; 802. Third spring telescopic rod; 803. Working pipe; 804. Second lifting rod; 901. Rotating rod; 902. Gear; 903. Connecting plate; 904. Fixed rod; 905. Rack; 906. Second spring; 1001. Slide groove; 1002. Lifting frame; 1101. Moving block; 1102. U-shaped frame; 1103. Rotating shaft; 1104. Support wheel; 1201. Rotating frame; 1202. Detection plate; 1203. First distance sensor. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-10This invention provides a multi-station synchronous milling machine tool for keyway machining, including an X-axis moving module 106 and a YZ-axis moving module 101 mounted on the milling machine. The X-axis moving module 106 is connected to a worktable 107, and multiple fixtures 108 are detachably connected to the top of the worktable 107. The YZ-axis moving module 101 includes a Y-axis slide 102 and multiple arrayed Z-axis slides 103, and each Z-axis slide 103 includes a spindle 104. A milling cutter 105 is detachably connected to the spindle 104, and the milling cutter 105 includes a cutting edge 109 and a cutting edge root 110, which are well known in this technical field and will not be described in detail here. Each cutting edge root 110 is provided with a radial limiting support mechanism on its side to limit the radial deflection of the milling cutter 105 in the direction of cutting reaction force. A tool length detection mechanism is provided below each Z-axis slide 103 to detect the axial wear of the milling cutter 105.

[0033] The radial limiting support mechanism includes a movable block 1101, and a moving mechanism is provided between the movable block 1101 and the Z-axis slide table 103. The side wall of the movable block 1101 is connected to a U-shaped frame 1102 through a telescopic mechanism, and the side wall of the U-shaped frame 1102 is rotatably connected to a support wheel 1104 through a rotating shaft 1103. The outer peripheral surface of the support wheel 1104 rolls and fits against the root of the cutting edge 110.

[0034] The tool length detection mechanism includes an L-shaped rotating frame 1201, which is rotatably connected to the side wall of a U-shaped frame 1102 via a rotating mechanism. The top of the rotating frame 1201 is connected to a detection disk 1202 via a lifting mechanism, and a first distance sensor 1203 is fixedly inserted into the top of the rotating frame 1201. Through the coordinated design of the radial limiting support mechanism and the tool length detection mechanism, the anti-sway support of the milling cutter 105 and the independent detection and compensation of wear of multiple milling cutters 105 are integrated into one, which effectively solves the technical problems of insufficient machining accuracy and poor consistency of existing multi-station keyway milling equipment and improves the machining quality of keyways in parts.

[0035] Please see Figure 5The telescopic mechanism includes two symmetrically arranged first sleeves 201 fixedly connected to the side wall of the moving block 1101, and a first sleeve rod 202 is inserted into the first sleeve 201. The other end of the first sleeve rod 202 is fixed to the side wall of the U-shaped frame 1102, and a first spring is connected between the first sleeve rod 202 and the first sleeve 201. A second distance sensor 203 is fixedly inserted into the side wall of the moving block 1101, and a limiting mechanism for limiting the first sleeve rod 202 is provided on the top of the moving block 1101. When the support wheel 1104 abuts against the side wall of the root of the cutting edge 110, the first spring is compressed. Then, the spindle 104 is started to drive the milling cutter 105 to rotate, which in turn drives the support wheel 1104 to rotate. At this time, the runout of the milling cutter 105 can be detected by the second distance sensor 203, so as to ensure the quality of subsequent keyway milling.

[0036] Please see Figure 5 The limiting mechanism includes multiple limiting holes 301 opened on the side wall of the first sleeve 202, and an insertion hole 302 is opened on the top of the first sleeve 201. The top of the moving block 1101 is connected to the lifting block 303 through the first lifting assembly, and two symmetrically arranged pins 304 are fixedly connected to the bottom of the lifting block 303. When the runout of the milling cutter 105 is qualified, the lifting block 303 and the pins 304 are driven to move downward through the first lifting assembly, so that the pins 304 pass through the insertion hole 302 and are inserted into the limiting hole 301. At this time, the first sleeve 202 can be limited, so that the first sleeve 201 and the first sleeve 202 form a whole, ensuring the radial limiting support effect of the support wheel 1104 on the milling cutter 105.

[0037] Please see Figure 5 The first lifting assembly includes an L-shaped block 401 fixedly connected to the top of the movable block 1101, and the bottom of the L-shaped block 401 is connected to the top of the lifting block 303 through a first spring telescopic rod 402. A first electromagnet 403 is fixedly connected to the top of the L-shaped block 401, and a first iron block 404 is fixedly connected to the top of the lifting block 303. When the first electromagnet 403 is de-energized, it no longer attracts the first iron block 404. The lifting block 303 and the pin 304 can move downward and reset under the action of the first spring telescopic rod 402, which facilitates the lifting operation of the lifting block 303.

[0038] Please see Figure 4 and Figure 5The moving mechanism includes a first fixed plate 501 fixedly connected to the bottom of the Z-axis slide 103, and the side wall of the first fixed plate 501 is connected to the side wall of the moving block 1101 through a second spring telescopic rod 502. The second spring telescopic rod 502 can control the movement stroke of the moving block 1101 to ensure that the force when the support wheel 1104 abuts against the side wall of the cutting edge root 110 is not too large. A fixed tube 503 is fixedly inserted into the side wall of the first fixed plate 501, and a moving rod 504 is inserted into the fixed tube 503. The other end of the moving rod 504 is fixed to the side wall of the moving block 1101, and the end of the fixed tube 503 is connected to a first flexible tube 505. The bottom of the Y-axis slide 102 is provided with A hydraulic supply mechanism is provided to supply hydraulic oil into the first hose 505. The hydraulic oil enters multiple fixed pipes 503 through the hose 505. Under the action of hydraulic pressure, the moving rod 504 can be moved, and the moving block 1101 can be moved. At the same time, the second spring telescopic rod 502 is stretched. When the moving block 1101 moves, it can drive the U-shaped frame 1102 and the support wheel 1104 to move through the telescopic mechanism, so that the support wheel 1104 abuts against the side wall of the cutting edge root 110. Even when the support wheel 1104 and the cutting edge root 110 wear, the abutting contact between the support wheel 1104 and the side wall of the cutting edge root 110 can still be maintained.

[0039] Please see Figure 2 , Figure 4 and Figure 9 The liquid supply mechanism includes a second fixed plate 601 fixedly connected to the bottom of the Y-axis slide 102, and a liquid storage tank 602 is fixedly connected to the side wall of the second fixed plate 601. The liquid storage tank 602 is connected to the first hose 505 through a connecting pipe 603, and the liquid storage tank 602 is filled with hydraulic oil. A gravity plate 604 is connected to the liquid storage tank 602 through a second lifting component. The gravity plate 604 is driven to move downward along the liquid storage tank 602 through the second lifting component, and squeezes the hydraulic oil in the liquid storage tank 602, so that the hydraulic oil enters multiple fixed pipes 503 through the connecting pipe 603 and the first hose 505.

[0040] Please see Figure 9The second lifting assembly includes two first lifting rods 701 inserted into the top of the liquid storage tank 602. The lower end of the first lifting rod 701 is fixed to the top of the gravity plate 604. The upper end of the first lifting rod 701 is fixedly connected to a second iron block 702. The side wall of the second fixed plate 601 is fixedly connected to a mounting block 703. The bottom of the mounting block 703 is fixedly connected to a second electromagnet 704. When the second electromagnet 704 is de-energized, it no longer attracts the second iron block 702. The gravity plate 604 can move downward along the liquid storage tank 602 under the action of gravity, which is more convenient and faster. The weight of the gravity plate 604 is sufficient to ensure that the cutting edge 109 will not push the moving block 1101 to move when milling the keyway, thus ensuring the support effect.

[0041] Please see Figure 5 and Figure 7 The lifting mechanism includes a flow channel disposed within the rotating frame 1201, and the flow channel is connected to the fixed pipe 503 via a second flexible hose 801. A working pipe 803 is fixedly inserted into the bottom of the rotating frame 1201, and the working pipe 803 is connected to the flow channel. A second lifting rod 804 is inserted into the working pipe 803, and the upper end of the second lifting rod 804 is fixed to the bottom of the detection plate 1202. The detection plate 1202 is connected to the bottom of the rotating frame 1201 via a third spring telescopic rod 802. Before keyway milling, when hydraulic oil enters the fixed pipe 503, it can enter the flow channel within the rotating frame 1201, and then enter the working pipe 803. Under the action of hydraulic pressure, it can push... The second lifting rod 804 moves upward, simultaneously driving the detection plate 1202 to move upward, and the third spring telescopic rod 802 is stretched. When the detection plate 1202 abuts against the bottom of the cutting edge 109, the detection plate 1202 stops moving. At this time, the distance of the detection plate 1202 is detected by the first distance sensor 1203, which can detect the length of each milling cutter 105, thereby determining the axial wear of each milling cutter 105. The wear is compensated by the Z-axis slide 103, which can identify the wear difference between multiple milling cutters 105 and perform independent depth compensation according to their respective wear amounts, ensuring that the keyway depth of the parts is consistent and improving the machining accuracy of the keyway.

[0042] Please see Figure 10The rotating mechanism includes a rotating rod 901 that rotates on the side wall of a U-shaped frame 1102, and a rotating frame 1201 fixedly sleeved on the side wall of the rotating rod 901. A gear 902 is fixedly sleeved on the side wall of the rotating rod 901, and a connecting plate 903 is fixedly connected to the side wall of the U-shaped frame 1102. A fixing rod 904 is fixedly connected to the side wall of the connecting plate 903, and a rack 905 is sleeved on the side wall of the fixing rod 904. The rack 905 meshes with the gear 902, and each fixing rod 904 has a... The movement of the second spring 906 and rack 905 is driven by the push assembly. After the test is completed, the push assembly pushes the rack 905 to move downward along the fixed rod 904, compressing the second spring 906. When the rack 905 moves downward, it can drive the gear 902 to rotate clockwise, and drive the rotating frame 1201 to rotate upward by 180 degrees through the rotating rod 901, and drive the detection disk 1202 to rotate synchronously to avoid collision, ensuring the normal operation of the subsequent milling of the keyway by the milling cutter 105.

[0043] Please see Figure 5 and Figure 10 The pushing component includes a slide groove 1001 opened on the side wall of the U-shaped frame 1102, and a lifting frame 1002 is slidably connected in the slide groove 1001. The two ends of the lifting frame 1002 are fixed to the lifting block 303 and the rack 905 respectively. When the lifting block 303 moves downward, it can drive the lifting frame 1002 to slide downward along the slide groove 1001. At the same time, it drives the rack 905 to move downward along the fixed rod 904. The linkage design eliminates the need for an additional motor drive.

[0044] Working principle: During keyway milling, multiple parts are first clamped and fixed by fixture 108. Then, the second electromagnet 704 is de-energized. After de-energization, the second electromagnet 704 no longer attracts the second iron block 702. The gravity plate 604 can move downward along the reservoir 602 under the action of gravity, and squeeze the hydraulic oil in the reservoir 602. This causes the hydraulic oil to enter multiple fixed pipes 503 through the connecting pipe 603 and the first hose 505. Under the action of hydraulic pressure, the moving rod 50 can be pushed. 4. Move the moving block 1101 and simultaneously extend the second spring telescopic rod 502. When the moving block 1101 moves, it can move the U-shaped frame 1102 and the support wheel 1104 through the telescopic mechanism, so that the support wheel 1104 abuts against the side wall of the cutting edge root 110. At the same time, the first spring is compressed, and even when the support wheel 1104 and the cutting edge root 110 wear, the abutting contact between the support wheel 1104 and the side wall of the cutting edge root 110 can be maintained.

[0045] When hydraulic oil enters the fixed pipe 503, it flows into the channel within the rotating frame 1201, and then into the working pipe 803. Under hydraulic pressure, it pushes the second lifting rod 804 upward, simultaneously causing the detection disc 1202 to move upward. The third spring telescopic rod 802 is then stretched. When the detection disc 1202 abuts against the bottom of the cutting edge 109, it stops moving. At this point, the distance to the detection disc 1202 is detected by the first distance sensor 1203, allowing the length of each milling cutter 105 to be measured, thus determining the length of each milling cutter 105. The axial wear of each milling cutter 105 is measured and compensated by the Z-axis slide 103. This allows for the identification of wear differences between multiple milling cutters 105 and independent depth compensation based on their respective wear amounts. This ensures that the keyway depth of the parts is consistent and improves the machining accuracy of the keyway. As long as the weight of the gravity plate 604 is large enough and the pressure of the hydraulic oil is high enough, and according to Pascal's principle, the area of ​​the gravity plate 604 is many times larger than the end face area of ​​the moving rod 504, the force on the moving rod 504 will be amplified many times, thus driving multiple support wheels 1104 and detection disc 1202 to move.

[0046] Next, the spindle 104 is started to drive the milling cutter 105 to rotate, which in turn drives the support wheel 1104 to rotate. At this time, the distance change of the U-shaped frame 1102 is detected by the second distance sensor 203, which can detect the runout of the milling cutter 105 to ensure the quality of subsequent keyway milling. When the runout of the milling cutter 105 is qualified, the first electromagnet 403 is de-energized. At this time, the first iron block 404 is no longer attracted. The lifting block 303 and the pin 304 can move downward and reset under the action of the first spring telescopic rod 402, and drive the pin 304 to pass through the insertion hole 302 and be inserted into the limiting hole 301. At this time, the first sleeve rod 202 can be limited, so that the first sleeve 201 and the first sleeve rod 202 form a whole, ensuring the radial limiting support effect of the support wheel 1104 on the milling cutter 105.

[0047] When the lifting block 303 moves downward, it can drive the lifting frame 1002 to slide downward along the slide groove 1001. At the same time, it drives the rack 905 to move downward along the fixed rod 904. The second spring 906 is compressed. When the rack 905 moves downward, it can drive the gear 902 to rotate clockwise. Through the rotating rod 901, it drives the rotating frame 1201 to rotate 180 degrees clockwise and drives the detection disk 1202 to rotate synchronously to avoid collision, ensuring the normal operation of the subsequent milling cutter 105 milling the keyway.

[0048] Then, the milling cutter 105 is driven to move in the Y direction and descend in the Z direction by the Y-axis slide 102 and the Z-axis slide 103. At the same time, the part is driven to move to the left in the X direction by the X-axis moving module 106, so as to realize the keyway milling operation of the part. This can limit the radial runout and elastic deformation of the milling cutter 105 during the cutting process, ensure the stability of the cutting position of the milling cutter 105, and improve the machining accuracy of the keyway.

[0049] After the multi-station synchronous milling is completed, the second electromagnet 704 is energized to attract the second iron block 702. At the same time, the first lifting rod 701 drives the gravity plate 604 to move upward and reset along the liquid storage tank 602. At this time, the moving block 1101 can move towards the first fixed plate 501 under the action of the second spring telescopic rod 502, and the support wheel 1104 is disengaged from the root of the cutting edge 110, which can reduce wear. Meanwhile, the detection plate 1202 can move towards the rotating frame 1201 under the action of the third spring telescopic rod 802. Then, the first lifting assembly drives the lifting block 303 and the pin 304 to move upward, and the pin 304 is disengaged from the limiting hole 301. At the same time, it can drive the rack 905 to move upward, thereby driving the rotating frame 1201 to rotate downward counterclockwise to reset for subsequent detection operations.

Claims

1. A multi-station synchronous milling machine tool for keyway machining, comprising an X-axis moving module (106) and a YZ-axis moving module (101) disposed on the milling machine, wherein a worktable (107) is connected to the X-axis moving module (106), and a plurality of fixtures (108) are detachably connected to the top of the worktable (107); the YZ-axis moving module (101) includes a Y-axis slide (102) and a plurality of arrayed Z-axis slides (103), and each Z-axis slide (103) includes a spindle (104), wherein a milling cutter (105) is detachably connected to the spindle (104), and the milling cutter (105) includes a cutting edge (109) and a cutting edge root (110), characterized in that: Each of the cutting edge roots (110) is provided with a radial limiting support mechanism on the side to limit the radial sway of the milling cutter (105) in the direction of cutting reaction force. Each of the Z-axis slides (103) is provided with a tool length detection mechanism below it to detect the axial wear of the milling cutter (105). The radial limiting support mechanism includes a movable block (1101), and a movable mechanism is provided between the movable block (1101) and the Z-axis slide (103). The side wall of the movable block (1101) is connected to a U-shaped frame (1102) through a telescopic mechanism, and the side wall of the U-shaped frame (1102) is rotatably connected to a support wheel (1104) through a rotating shaft (1103). The outer circumferential surface of the support wheel (1104) rolls and fits against the root of the cutting edge (110). The tool length detection mechanism includes an L-shaped rotating frame (1201), and the rotating frame (1201) is rotatably connected to the side wall of the U-shaped frame (1102) through a rotating mechanism. The top of the rotating frame (1201) is connected to a detection disk (1202) through a lifting mechanism, and a first distance sensor (1203) is fixedly inserted into the top of the rotating frame (1201).

2. The multi-station synchronous milling machine tool for keyway machining according to claim 1, characterized in that: The telescopic mechanism includes two symmetrically arranged first sleeves (201) fixedly connected to the side wall of the moving block (1101), and a first sleeve rod (202) is inserted inside the first sleeve (201). The other end of the first sleeve rod (202) is fixed to the side wall of the U-shaped frame (1102), and a first spring is connected between the first sleeve rod (202) and the first sleeve (201). A second distance sensor (203) is fixedly inserted into the side wall of the moving block (1101), and a limiting mechanism for limiting the first sleeve rod (202) is provided on the top of the moving block (1101).

3. The multi-station synchronous milling machine tool for keyway machining according to claim 2, characterized in that: The limiting mechanism includes multiple limiting holes (301) opened on the side wall of the first sleeve (202), and an insertion hole (302) is opened on the top of the first sleeve (201). The top of the moving block (1101) is connected to a lifting block (303) through a first lifting assembly, and two symmetrically arranged pins (304) are fixedly connected to the bottom of the lifting block (303).

4. The multi-station synchronous milling machine tool for keyway machining according to claim 3, characterized in that: The first lifting assembly includes an L-shaped block (401) fixedly connected to the top of the moving block (1101), and the bottom of the L-shaped block (401) is connected to the top of the lifting block (303) through a first spring telescopic rod (402). The top of the L-shaped block (401) is fixedly connected to a first electromagnet (403), and the top of the lifting block (303) is fixedly connected to a first iron block (404).

5. The multi-station synchronous milling machine tool for keyway machining according to claim 1, characterized in that: The moving mechanism includes a first fixed plate (501) fixedly connected to the bottom of the Z-axis slide (103), and the side wall of the first fixed plate (501) is connected to the side wall of the moving block (1101) through a second spring telescopic rod (502). A fixed tube (503) is fixedly inserted into the side wall of the first fixed plate (501), and a moving rod (504) is inserted into the fixed tube (503). The other end of the moving rod (504) is fixed to the side wall of the moving block (1101), and the end of the fixed tube (503) is connected to a first flexible hose (505). The bottom of the Y-axis slide (102) is provided with a hydraulic oil supply mechanism for supplying hydraulic oil into the first flexible hose (505).

6. The multi-station synchronous milling machine tool for keyway machining according to claim 5, characterized in that: The liquid supply mechanism includes a second fixed plate (601) fixedly connected to the bottom of the Y-axis slide (102), and a liquid storage tank (602) is fixedly connected to the side wall of the second fixed plate (601). The liquid storage tank (602) is connected to the first flexible hose (505) through a connecting pipe (603), and the liquid storage tank (602) is filled with hydraulic oil. A gravity plate (604) is connected to the liquid storage tank (602) through a second lifting assembly.

7. A multi-station synchronous milling machine tool for keyway machining according to claim 6, characterized in that: The second lifting assembly includes two first lifting rods (701) inserted into the top of the liquid storage tank (602), and the lower end of the first lifting rod (701) is fixed to the top of the gravity plate (604). The upper end of the first lifting rod (701) is fixedly connected to a second iron block (702). The side wall of the second fixing plate (601) is fixedly connected to a mounting block (703), and the bottom of the mounting block (703) is fixedly connected to a second electromagnet (704).

8. The multi-station synchronous milling machine tool for keyway machining according to claim 1, characterized in that: The lifting mechanism includes a flow channel disposed in the rotating frame (1201), and the flow channel is connected to the fixed pipe (503) through the second flexible hose (801). A working pipe (803) is fixedly inserted into the bottom of the rotating frame (1201), and the working pipe (803) is connected to the flow channel. A second lifting rod (804) is inserted into the working pipe (803), and the upper end of the second lifting rod (804) is fixed to the bottom of the detection plate (1202). The detection plate (1202) is connected to the bottom of the rotating frame (1201) through the third spring telescopic rod (802).

9. A multi-station synchronous milling machine tool for keyway machining of parts according to claim 3, characterized in that: The rotating mechanism includes a rotating rod (901) that rotates on the side wall of a U-shaped frame (1102), and a rotating frame (1201) is fixedly sleeved on the side wall of the rotating rod (901). A gear (902) is fixedly sleeved on the side wall of the rotating rod (901), and a connecting plate (903) is fixedly connected to the side wall of the U-shaped frame (1102). A fixing rod (904) is fixedly connected to the side wall of the connecting plate (903), and a rack (905) is sleeved on the side wall of the fixing rod (904). The rack (905) meshes with the gear (902), and a second spring (906) is sleeved on the side wall of each fixing rod (904). The movement of the rack (905) is driven by a pushing assembly.

10. A multi-station synchronous milling machine tool for keyway machining according to claim 9, characterized in that: The pushing component includes a slide groove (1001) opened on the side wall of the U-shaped frame (1102), and a lifting frame (1002) is slidably connected in the slide groove (1001). The two ends of the lifting frame (1002) are fixed to the lifting block (303) and the rack (905) respectively.

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