Numerical control gear milling machine for metal part machining and machining method of numerical control gear milling machine

Abstract

The invention relates to the technical field of metal part machining, in particular to a numerical control gear milling machine for metal part machining, which comprises a gear milling machine body, a bearing mounting plate is fixedly arranged at one end of the gear milling machine body, an electric telescopic rod is fixedly mounted on the bearing mounting plate, and matched track grooves are symmetrically formed in the upper side and the lower side of the gear milling machine body. A closed protective door is fixedly mounted on the electric telescopic rod, a connecting carrier block is fixedly arranged on the closed protective door, the connecting carrier block is fixedly connected with the electric telescopic rod, and matched track strips are symmetrically and fixedly arranged on the upper side and the lower side of the closed protective door. Comprising the following steps that firstly, a workpiece is placed; secondly, the workpiece is moved; thirdly, the workpiece is fixed; and fourthly, gear milling is conducted on the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of metal parts processing, in particular to a numerical control gear milling machine for metal parts processing and a processing method thereof. Background Art

[0002] A gear milling machine is a machine tool for processing gears. A CNC gear milling machine can control the machine through CNC programming to process gears. It is more convenient to operate and has high work efficiency. A rack is a very common metal component in the mechanical field. The teeth on the rack are processed by a CNC gear milling machine. The gear milling process is automated, and the operation is simple and accurate. However, there are still certain deficiencies in the existing CNC gear milling machines for rack processing. That is, when performing the gear milling operation of the rack, the automatic clamping and fixing of the rack cannot be achieved, and manual operation is required to clamp and fix the rack. In addition, when performing the gear milling operation on racks of different lengths and widths, different fixtures need to be replaced. Although the gear milling process is simpler and more convenient, the clamping of the rack and the fixing operation of racks of different sizes are still relatively troublesome, which invisibly affects the efficiency of gear milling and increases the operating burden of the staff. Summary of the invention

[0003] The object of the present invention is to provide a CNC gear milling machine for metal parts processing and a processing method thereof, so as to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A CNC gear milling machine for metal parts processing comprises a gear milling machine body, one end of the gear milling machine body is fixedly provided with a load-bearing mounting plate, an electric telescopic rod is fixedly installed on the load-bearing mounting plate, matching track grooves are symmetrically provided on the upper and lower sides of the gear milling machine body, a closed protective door is fixedly provided on the electric telescopic rod, a connecting carrier block is fixedly provided on the closed protective door, the connecting carrier block is fixedly connected to the electric telescopic rod, and matching track bars are symmetrically provided on the upper and lower sides of the closed protective door, the matching track bars are inserted in the matching track grooves, a supporting loading rod is fixedly provided inside the gear milling machine body, and a load-bearing slat is fixedly provided on the end surface of one end of the inner part of the gear milling machine body, a pull-down matching groove is provided on the load-bearing slat, a driving matching rod is hinged on the inner end surface of the closed protective door, and a convenient adaptive positioning mechanism is hinged on the other end of the driving matching rod.

[0006] Preferably, the convenient adaptive positioning mechanism includes a milling gear bearing platform, a driving connecting plate, a supporting movable plate, a matching movable frame, a movable carrier plate, a rotating supporting rod and a bearing plug plate. The milling gear bearing platform is connected to the other end of the driving matching rod, and supporting movable holes are symmetrically opened on the milling gear bearing platform, and supporting matching rods are inserted into the supporting movable holes.

[0007] Preferably, a plug-in cavity hole is opened on the milling tooth bearing platform, a matching cavity channel is opened on the lower side of the plug-in cavity hole, the matching cavity channel is connected with the plug-in cavity hole, and a guide vertical rod is fixedly arranged at the cavity mouth of the matching cavity, and an installation hole is opened on the milling tooth bearing platform at the lower side of the cavity mouth of the matching cavity.

[0008] Preferably, a positioning side plate is fixedly provided on one side of the upper end of the milling gear bearing platform, a first positioning column is fixedly provided on the positioning side plate, and a first matching cavity is provided on the positioning side plate, the first matching cavity passes through the first positioning column, and a first movable plug hole is provided on the first positioning column, a positioning end plate is fixedly provided on one end of the upper side of the milling gear bearing platform, a second positioning column is fixedly provided on the positioning end plate, and a second matching cavity is provided on the positioning end plate, the second matching cavity passes through the second positioning column, a second movable plug hole is provided on the second positioning column, and protruding side plates are symmetrically fixed on both sides of the second positioning column, and limited position plug holes are provided on the protruding side plates, a bearing base plate is fixedly provided on the lower end of one side of the milling gear bearing platform, and support guide rods are symmetrically fixedly provided on both ends of the bearing base plate.

[0009] Preferably, limit rods are symmetrically fixed at both ends of the driving connecting plate, the limit rods are inserted in the limit plug holes, and a connecting base plate is fixedly provided at the lower end of the limit rod, a connecting plate is symmetrically fixedly provided at one end of the connecting base plate, connecting columns are fixedly provided between the connecting plates, a pair of supporting strips are fixedly provided on the driving connecting plate, an insert sliding column is fixedly provided on the supporting strips, the insert sliding column is inserted in the pull-down matching groove, and a movable hinge is hinged on the lower side of the supporting strip, and the lower end of the movable hinge is hinged to the supporting movable plate.

[0010] Preferably, a second plug-in rod is fixedly provided on the supporting movable plate, the second plug-in rod is plugged into the second movable socket, and a second plug plate is fixedly provided on the second plug-in rod, the second plug plate is plugged into the second matching cavity, a matching long strip is fixedly provided on one side of the lower end of the supporting movable plate, a connecting hinge is hinged on the end of the matching long strip away from the supporting movable plate, and a matching movable frame is hinged on the upper end of the connecting hinge.

[0011] Preferably, matching limit holes are symmetrically provided at both ends of the lower side of the matching movable frame, supporting guide rods are inserted in the matching limit holes, an inclined surface pushing frame is symmetrically fixedly provided on the matching movable frame, and a connecting strip is also fixedly provided on the matching movable frame, the connecting strip is hinged with the connecting hinge rod, a movable carrier plate is installed on the positioning side plate, a first plug rod is fixedly provided on the movable carrier plate, the first plug rod is inserted in the first movable plug hole, a first spring is sleeved on the first plug rod, and a first plug plate is fixedly provided on the first plug rod, the first plug plate is inserted in the first matching cavity, and a contact rod is also fixedly provided on the movable carrier plate, and the contact rod is in contact with the inclined surface pushing frame.

[0012] Preferably, one end of the rotating support rod is sleeved with a bearing, and the bearing is installed in the mounting hole, and the other end of the rotating support rod is fixedly provided with a rotating slat, one end of the rotating slat is provided with a connecting channel, a connecting column is inserted in the connecting channel, and the other end of the rotating slat is inserted with a hinge column, and the hinge column is connected to a connecting bar block, and the connecting bar block is provided with a hinge hole, and a hinge column is inserted in the hinge hole, and a sliding matching column is fixedly provided on the upper end of the connecting bar block, and the sliding matching column is connected to a load-bearing plug plate.

[0013] Preferably, the load-bearing plug plate is inserted in the matching cavity, and a connecting hole is provided on the load-bearing plug plate, a limit movable strip is installed at the connecting hole, a connecting rod is fixedly provided on the limit movable strip, the connecting rod is inserted in the connecting hole, and a second spring is sleeved on the connecting rod, a guide through hole is also provided on the load-bearing plug plate, a guide vertical rod is inserted in the guide through hole, and a support connecting plate is fixedly provided at one end of the load-bearing plug plate, a matching slide is provided on the support connecting plate, and a sliding matching column is inserted in the matching slide.

[0014] A metal parts processing method comprises the following steps:

[0015] Step 1: Place the workpiece: Place the workpiece close to the positioning side plate and positioning end plate;

[0016] Step 2: Movement of the workpiece: Start the electric telescopic rod to drive the closed protective door to move, and then drive the workpiece to move to the working point;

[0017] Step 3: Fixing of the workpiece: Automatic fixation of the workpiece is achieved as the workpiece moves;

[0018] Step 4: Workpiece milling: When the workpiece moves to the working point, start the milling machine to perform the milling operation.

[0019] Compared with the prior art, the invention has the following advantages:

[0020] 1. When milling the teeth of the rack, place the workpiece close to the positioning side plate and the positioning end plate, and then start the electric telescopic rod to drive the closed protective door to close. As the closed protective door closes, it will drive the milling gear bearing platform to move, and then drive the workpiece to the working point. The milling gear bearing platform can realize automatic positioning and fixing of the workpiece during the movement, which is very convenient and fast.

[0021] 2. When the milling gear bearing platform moves, it will drive the driving connecting plate to move downward. As the driving connecting plate moves downward, it will drive the first plug plate and the second plug plate to move. Since the workpiece fits tightly with the positioning side plate and the positioning end plate, as the first plug plate and the second plug plate move, negative pressure will be generated to fix the workpiece. There is no need for excessive manual operation, which not only improves the work efficiency of workpiece positioning, but also facilitates the clamping process of the staff. The negative pressure fixing method has strong adaptability and can adapt to the processing of racks of different lengths.

[0022] 3. In addition, when the gear milling bearing platform is moving, as the driving connecting plate moves downward, the bearing insert plate will also be driven to move upward. As the bearing insert plate moves upward, the limit movable bar at the lower end of the workpiece will not move, while the limit movable bar on one side of the workpiece will move upward and close to the side of the workpiece. In this way, combined with the role of the positioning side plate, the fixing strength of both sides of the workpiece can be further improved. Because during the gear milling process, the tool mills along the direction of the connection line between the positioning side plate and the limit movable bar, and the chip force in this direction is relatively large, which can fully ensure the stability of the workpiece. In addition, the setting of multiple limit movable bars allows the device to adapt to the processing of racks of different widths within a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the first-person view of the CNC gear milling machine assembly.

[0024] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0025] Figure 3 Schematic diagram of the second view of the CNC gear milling machine assembly.

[0026] Figure 4 This is a first-person perspective schematic diagram of the assembly of the milling gear support platform and the workpiece.

[0027] Figure 5 A schematic diagram from a second perspective of the assembly of the milling gear support platform and the workpiece.

[0028] Figure 6 This is a third-view schematic diagram of the assembly of the milling gear support platform and the workpiece.

[0029] Figure 7 This is the assembly diagram of the milling gear bearing platform.

[0030] Figure 8 This is a schematic diagram of the structure of the milling gear support platform from the first perspective.

[0031] Fig. 9 This is a schematic diagram of the structure of the milling gear support platform from a second perspective.

[0032] Fig.10 It is a structural diagram of the drive connecting plate.

[0033] Fig.11 An exploded schematic diagram of the assembly of the rotating bearing rod and the load-bearing plug plate.

[0034] In the figure: 1, milling machine body; 11, bearing mounting plate; 12, electric telescopic rod; 13, matching track groove; 14, closed protective door; 15, connecting carrier block; 16, matching track bar; 17, supporting load rod; 18, bearing plate; 181, pull-down matching groove; 19, driving matching rod; 2, milling bearing platform; 21, supporting movable hole; 22, plug-in cavity hole; 23, matching cavity; 24, guide vertical rod; 25, mounting bearing hole; 26, positioning side plate; 261, first positioning column; 262, first matching cavity; 263, first movable socket; 27, positioning end plate; 271, second positioning column; 272, second matching cavity; 273, second movable socket; 274, protruding side plate; 275, limit socket; 28, bearing bottom plate; 281, supporting guide rod; 3, driving connecting plate; 31, limit plug rod; 32, connecting Bottom plate; 33, connecting plate; 34, connecting column; 35, supporting strip; 36, plugging column; 37, movable hinge rod; 4, supporting movable plate; 41, second plugging rod; 42, second plug plate; 43, matching long strip; 44, connecting hinge rod; 5, matching movable frame; 51, matching limit hole; 52, inclined push-up frame; 53, connecting strip; 6, movable carrier plate; 61, first plugging rod; 62, first spring Spring; 63, first plug plate; 64, contact rod; 7, rotating bearing rod; 71, bearing; 72, rotating slat; 73, connecting channel; 74, hinged column; 75, connecting strip; 76, hinged hole; 77, sliding matching column; 8, load-bearing plug plate; 81, connecting hole; 82, limit movable strip; 83, connecting load rod; 84, second spring; 85, guide through hole; 86, supporting connecting plate; 87, matching slide. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 11 , the present invention provides a technical solution:

[0037] A CNC gear milling machine for metal parts processing comprises a gear milling machine body 1, a bearing mounting plate 11 is fixedly provided at one end of the gear milling machine body 1, an electric telescopic rod 12 is fixedly installed on the bearing mounting plate 11, matching track grooves 13 are symmetrically provided on the upper and lower sides of the gear milling machine body 1, a closed protective door 14 is fixedly provided on the electric telescopic rod 12, a connecting carrier block 15 is fixedly provided on the closed protective door 14, the connecting carrier block 15 is fixedly connected to the electric telescopic rod 12, and matching track bars 16 are symmetrically fixedly provided on the upper and lower sides of the closed protective door 14, and the matching track bars 16 are inserted in the matching track grooves 13, a supporting loading rod 17 is fixedly provided inside the gear milling machine body 1, and a bearing slat 18 is fixedly provided on the end surface of one end of the inner part of the gear milling machine body 1, and a pull-down matching groove 181 is provided on the bearing slat 18, a driving matching rod 19 is hinged on the inner end surface of the closed protective door 14, and a convenient adaptive positioning mechanism is hinged on the other end of the driving matching rod 19.

[0038] The convenient adaptive positioning mechanism includes a milling gear bearing platform 2, a driving connecting plate 3, a supporting movable plate 4, a matching movable frame 5, a movable carrier plate 6, a rotating supporting rod 7 and a bearing plug plate 8. The milling gear bearing platform 2 is connected to the other end of the driving matching rod 19, and the milling gear bearing platform 2 is symmetrically provided with supporting movable holes 21, and the supporting movable holes 21 are inserted with supporting matching rods 17.

[0039] An insert cavity 22 is provided on the milling gear support platform 2, and a matching cavity 23 is provided on the lower side of the insert cavity 22. The matching cavity 23 is connected with the insert cavity 22, and a guide vertical rod 24 is fixedly provided at the cavity opening of the matching cavity 23, and a mounting hole 25 is provided on the milling gear support platform 2 at the lower side of the cavity opening of the matching cavity 23.

[0040] A positioning side plate 26 is fixedly provided on one side of the upper end of the milling gear bearing platform 2, and a first positioning column 261 is fixedly provided on the positioning side plate 26, and a first matching cavity 262 is opened on the positioning side plate 26, the first matching cavity 262 passes through the first positioning column 261, and a first movable plug hole 263 is opened on the first positioning column 261, a positioning end plate 27 is fixedly provided on one end of the upper side of the milling gear bearing platform 2, a second positioning column 271 is fixedly provided on the positioning end plate 27, and a second matching cavity 272 is opened on the positioning end plate 27, the second matching cavity 272 passes through the second positioning column 271, a second movable plug hole 273 is opened on the second positioning column 271, and protruding side plates 274 are symmetrically fixedly provided on both sides of the second positioning column 271, and a limited position plug hole 275 is opened on the protruding side plate 274, a bearing bottom plate 28 is fixedly provided on the lower end of one side of the milling gear bearing platform 2, and support guide rods 281 are symmetrically fixedly provided on both ends of the bearing bottom plate 28.

[0041] The two ends of the driving connecting plate 3 are symmetrically fixed with limit rods 31, the limit rods 31 are inserted in the limit sockets 275, and the lower end of the limit rod 31 is fixed with a connecting base plate 32, one end of the connecting base plate 32 is symmetrically fixed with a connecting plate 33, and a connecting column 34 is fixed between the connecting plates 33. A pair of supporting strips 35 are fixed on the driving connecting plate 3, and an insert sliding column 36 is fixed on the supporting strips 35. The insert sliding column 36 is inserted in the pull-down matching groove 181, and the lower side of the supporting strips 35 is hinged with a movable hinge rod 37, and the lower end of the movable hinge rod 37 is hinged with the supporting movable plate 4. In addition, the insert sliding column 36 contacts the inner wall of the pull-down matching groove 181.

[0042] A second plug rod 41 is fixedly provided on the supporting movable plate 4, and the second plug rod 41 is plugged into the second movable socket 273, and a second plug plate 42 is fixedly provided on the second plug rod 41, and the second plug plate 42 is plugged into the second matching cavity 272, and a matching long strip 43 is fixedly provided on one side of the lower end of the supporting movable plate 4, and a connecting hinge 44 is hinged at one end of the matching long strip 43 away from the supporting movable plate 4, and a matching movable frame 5 is hinged at the upper end of the connecting hinge 44.

[0043] The lower ends of the cooperating movable frame 5 are symmetrically provided with cooperating limit holes 51, and the supporting guide rods 281 are inserted in the cooperating limit holes 51. The cooperating movable frame 5 is symmetrically fixed with an inclined surface pushing frame 52, and a connecting strip 53 is also fixedly provided on the cooperating movable frame 5, and the connecting strip 53 is hinged with the connecting hinge 44. A movable carrier plate 6 is installed on the positioning side plate 26, and a first plug rod 61 is fixedly provided on the movable carrier plate 6. The first plug rod 61 is inserted in the first movable plug hole 263. A first spring 62 is sleeved on the first plug rod 61, and a first plug plate 63 is fixedly provided on the first plug rod 61. The first plug plate 63 is inserted in the first cooperating cavity 262. A contact rod 64 is also fixedly provided on the movable carrier plate 6, and the contact rod 64 is in contact with the inclined surface pushing frame 52. The two ends of the first spring 62 are respectively fixed on the positioning side plate 26 and the movable carrier plate 6.

[0044] A bearing 71 is sleeved on one end of the rotating supporting rod 7, and the bearing 71 is installed in the mounting bearing hole 25, and a rotating slat 72 is fixedly set on the other end of the rotating supporting rod 7, and a connecting channel 73 is opened at one end of the rotating slat 72, and a connecting plug column 34 is inserted in the connecting channel 73, and the connecting plug column 34 contacts the inner wall of the connecting channel 73, and a hinge column 74 is inserted at the other end of the rotating slat 72, and the hinge column 74 is connected to a connecting strip block 75, and a hinge hole 76 is opened on the connecting strip block 75, and the hinge column 74 is inserted in the hinge hole 76, and a sliding matching column 77 is fixedly set on the upper end of the connecting strip block 75, and the sliding matching column 77 is connected to the bearing plug plate 8.

[0045] The bearing plug plate 8 is inserted in the matching cavity 23, and a connecting hole 81 is provided on the bearing plug plate 8, and a limited movable bar 82 is installed at the connecting hole 81, and a connecting rod 83 is fixedly provided on the limited movable bar 82, and the connecting rod 83 is inserted in the connecting hole 81, and a second spring 84 is sleeved on the connecting rod 83, and the two ends of the second spring 84 are respectively fixed on the bearing plug plate 8 and the limited movable bar 82, the limited movable bar 82 is inserted in the insertion cavity 22, and the number of the limited movable bars 82 can be set according to actual use requirements, and a guide through hole 85 is also provided on the bearing plug plate 8, and a guide vertical rod 24 is inserted in the guide through hole 85, and a support connecting plate 86 is fixedly provided at one end of the bearing plug plate 8, and a matching slide 87 is provided on the support connecting plate 86, and a sliding matching column 77 is inserted in the matching slide 87, and the inner wall of the matching slide 87 is in contact with the sliding matching column 77.

[0046] A metal parts processing method comprises the following steps:

[0047] Step 1: Placing the workpiece: placing the workpiece close to the positioning side plate 26 and the positioning end plate 27;

[0048] Step 2: Movement of the workpiece: Start the electric telescopic rod 12 to drive the closed protective door 14 to move, and then drive the workpiece to move to the working point;

[0049] Step 3: Fixing of the workpiece: Automatic fixation of the workpiece is achieved as the workpiece moves;

[0050] Step 4: Workpiece milling: When the workpiece is moved to the working point, the gear milling machine body 1 is started to perform the gear milling operation.

[0051] When the closed protective door 14 is in the open state, the gear milling bearing platform 2 is at the machine mouth of the gear milling machine body 1, which is convenient for placing the workpiece. When milling, the workpiece is placed close to the positioning side plate 26 and the positioning end plate 27, so that the workpiece closes the first matching cavity 262 and the second matching cavity 272, and then the electric telescopic rod 12 is started to drive the closed protective door 14 to move, so that the gear milling machine body 1 is in a closed state, ensuring the safety during the gear milling process. As the closed protective door 14 moves, the gear milling bearing platform 2 will also be driven to move further into the gear milling machine body 1, bringing The movable workpiece moves to the working point. In this process, the driving connecting plate 3 will be driven to move downward under the action of the pull-down matching groove 181, and then the supporting movable plate 4 will be driven to move away from the milling gear bearing platform 2 under the action of the movable hinge rod 37, thereby driving the second plug plate 42 to move. A negative pressure can be formed in the second matching cavity 272 to achieve the first layer of fixation of the workpiece. At the same time, with the movement of the supporting movable plate 4, the matching movable frame 5 will be pushed to move upward under the action of the connecting hinge rod 44. With the upward movement of the matching movable frame 5, the contact rod will be pushed under the action of the inclined push-up frame 52 The first plug plate 63 is driven to move away from the milling gear bearing platform 2, thereby driving the first plug plate 63 to move, and a negative pressure can be formed in the first matching cavity 262, which plays a role of fixing the workpiece at the second level. In addition, as the driving connecting plate 3 moves downward, it will drive the rotating bearing rod 7 to rotate, so that one end of the hinge column 74 rotates upward, thereby driving the bearing plug plate 8 to move upward. As the bearing plug plate 8 moves upward, the limiting movable bar 82 on the lower side of the workpiece will not move upward under the restriction of the workpiece, while the limiting movable bar 82 on the side of the workpiece will move upward and contact the side of the workpiece, matching The use of the upper positioning side plate 26 can further enhance the fixing effect on both sides of the workpiece, because when milling, the tool moves along the direction of the line connecting the positioning side plate 26 and the limiting movable bar 82, so the cutting force in this direction is relatively large, which can fully ensure the stability of the workpiece during the milling process, and different limiting movable bars 82 correspond to racks of different widths, so the setting of multiple limiting movable bars 82 enables it to adapt to racks of different widths for processing, and multi-point negative pressure fixation also enables it to adapt to racks of different lengths. After the milling is completed, the closed protective door 14 can be opened.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC gear milling machine for metal parts processing, comprising a gear milling machine body (1), characterized in that: A bearing mounting plate (11) is fixedly provided at one end of the gear milling machine body (1), an electric telescopic rod (12) is fixedly installed on the bearing mounting plate (11), matching track grooves (13) are symmetrically provided on the upper and lower sides of the gear milling machine body (1), a closed protective door (14) is fixedly installed on the electric telescopic rod (12), a connecting carrier block (15) is fixedly provided on the closed protective door (14), the connecting carrier block (15) is fixedly connected to the electric telescopic rod (12), and the upper and lower sides of the closed protective door (14) are symmetrically fixed. A matching track bar (16) is fixedly arranged, and the matching track bar (16) is inserted into the matching track groove (13); a supporting load-bearing rod (17) is fixedly arranged inside the gear milling machine body (1), and a bearing plate bar (18) is fixedly arranged on an end surface of one end inside the gear milling machine body (1), and a pull-down matching groove (181) is opened on the bearing plate bar (18); a driving matching rod (19) is hinged on the inner end surface of the closed protective door (14), and a convenient adaptive positioning mechanism is hinged on the other end of the driving matching rod (19).

2. A CNC gear milling machine for metal parts processing according to claim 1, characterized in that: The convenient adaptive positioning mechanism comprises a milling gear bearing platform (2), a driving connecting plate (3), a supporting movable plate (4), a matching movable frame (5), a movable carrier plate (6), a rotating bearing rod (7) and a bearing plug plate (8); the milling gear bearing platform (2) is connected to the other end of the driving matching rod (19), and the milling gear bearing platform (2) is symmetrically provided with supporting movable holes (21), and the supporting movable holes (21) are inserted into the supporting matching rods (17).

3. A CNC gear milling machine for metal parts processing according to claim 2, characterized in that: The milling gear support platform (2) is provided with a plug-in cavity hole (22), a matching cavity channel (23) is provided on the lower side of the plug-in cavity hole (22), the matching cavity channel (23) is connected with the plug-in cavity hole (22), a guide vertical rod (24) is fixedly arranged at the cavity opening of the matching cavity channel (23), and a mounting hole (25) is provided on the milling gear support platform (2) at the lower side of the cavity opening of the matching cavity channel (23).

4. A CNC gear milling machine for metal parts processing according to claim 3, characterized in that: A positioning side plate (26) is fixedly provided on one side of the upper end of the milling gear bearing platform (2), a first positioning column (261) is fixedly provided on the positioning side plate (26), and a first matching cavity (262) is provided on the positioning side plate (26), the first matching cavity (262) passes through the first positioning column (261), and a first movable plug hole (263) is provided on the first positioning column (261), a positioning end plate (27) is fixedly provided on one end of the upper side of the milling gear bearing platform (2), a second positioning column (271) is fixedly provided on the positioning end plate (27), and the positioning end plate (27) is fixedly provided with a first positioning column (271), and the first matching cavity (262) passes through the first positioning column (261), and the first movable plug hole (263) is provided on the first positioning column (261). A second matching cavity (272) is provided on the positioning end plate (27), the second matching cavity (272) passes through the second positioning column (271), a second movable plug hole (273) is provided on the second positioning column (271), and protruding side plates (274) are symmetrically fixedly arranged on both sides of the second positioning column (271), and a limiting plug hole (275) is provided on the protruding side plates (274), and a bearing bottom plate (28) is fixedly arranged at the lower end of one side of the milling gear bearing platform (2), and support guide rods (281) are symmetrically fixedly arranged at both ends of the bearing bottom plate (28).

5. A CNC gear milling machine for metal parts processing according to claim 4, characterized in that: The two ends of the driving connecting plate (3) are symmetrically fixed with limit rods (31), the limit rods (31) are inserted into the limit holes (275), and the lower end of the limit rods (31) is fixed with a connecting base plate (32), one end of the connecting base plate (32) is symmetrically fixed with a connecting plate (33), and a connecting column (34) is fixed between the connecting plates (33). The driving connecting plate (3) is fixed with a pair of supporting strips (35), and the supporting strips (35) are fixed with a plug-in slide column (36), and the plug-in slide column (36) is inserted into the pull-down matching groove (181), and the lower side of the supporting strip (35) is hinged with a movable hinge (37), and the lower end of the movable hinge (37) is hinged with a supporting movable plate (4).

6. A CNC gear milling machine for metal parts processing according to claim 5, characterized in that: A second plug rod (41) is fixedly arranged on the supporting movable plate (4), and the second plug rod (41) is inserted into the second movable plug hole (273). A second plug plate (42) is fixedly arranged on the second plug rod (41), and the second plug plate (42) is inserted into the second matching cavity (272). A matching long strip plate (43) is fixedly arranged on one side of the lower end of the supporting movable plate (4), and a connecting hinge rod (44) is hinged on one end of the matching long strip plate (43) away from the supporting movable plate (4), and a matching movable frame (5) is hinged on the upper end of the connecting hinge rod (44).

7. A CNC gear milling machine for metal parts processing according to claim 6, characterized in that: The lower ends of the matching movable frame (5) are symmetrically provided with matching limiting holes (51), and the matching limiting holes (51) are plugged with supporting guide rods (281). The matching movable frame (5) is symmetrically fixed with inclined surface pushing frames (52), and the matching movable frame (5) is also fixed with a connecting strip (53), and the connecting strip (53) is hinged with the connecting hinge rod (44). The positioning side plate (26) is provided with a movable carrier plate (6), and the movable carrier plate (6) is provided with a movable support plate (6). A first plug rod (61) is fixedly arranged, and the first plug rod (61) is inserted into the first movable plug hole (263). A first spring (62) is sleeved on the first plug rod (61), and a first plug plate (63) is fixedly arranged on the first plug rod (61), and the first plug plate (63) is inserted into the first matching cavity (262). A contact rod (64) is also fixedly arranged on the movable carrier plate (6), and the contact rod (64) is in contact with the inclined ejection frame (52).

8. A CNC gear milling machine for metal parts processing according to claim 7, characterized in that: A bearing (71) is sleeved on one end of the rotating support rod (7), and the bearing (71) is installed in the installation bearing hole (25), and a rotating strip (72) is fixedly arranged on the other end of the rotating support rod (7), and a connecting channel (73) is provided at one end of the rotating strip (72), and a connecting plug column (34) is inserted in the connecting channel (73), and a hinge column (74) is inserted at the other end of the rotating strip (72), and the hinge column (74) is connected to a connecting strip (75), and a hinge hole (76) is provided on the connecting strip (75), and a hinge column (74) is inserted in the hinge hole (76), and a sliding matching column (77) is fixedly arranged on the upper end of the connecting strip (75), and the sliding matching column (77) is connected to the bearing plug plate (8).

9. A CNC gear milling machine for metal parts processing according to claim 8, characterized in that: The bearing plug plate (8) is inserted into the matching cavity (23), and a connecting hole (81) is provided on the bearing plug plate (8), a limit movable strip (82) is installed at the connecting hole (81), a connecting rod (83) is fixedly provided on the limit movable strip (82), the connecting rod (83) is inserted into the connecting hole (81), and a second spring (84) is sleeved on the connecting rod (83), a guide through hole (85) is also provided on the bearing plug plate (8), a guide vertical rod (24) is inserted into the guide through hole (85), and a support connecting plate (86) is fixedly provided at one end of the bearing plug plate (8), a matching slideway (87) is provided on the support connecting plate (86), and a sliding matching column (77) is inserted into the matching slideway (87).

10. A method for processing a metal part, characterized in that: The processing method is applicable to the CNC gear milling machine according to any one of claims 1 to 9, and comprises the following steps: Step 1: Placing the workpiece: placing the workpiece close to the positioning side plate (26) and the positioning end plate (27); Step 2: moving the workpiece: starting the electric telescopic rod (12) to drive the closed protective door (14) to move, thereby driving the workpiece to move to the working point; Step 3: Fixing of the workpiece: Automatic fixation of the workpiece is achieved as the workpiece moves; Step 4: Milling of workpiece gears: When the workpiece is moved to the working point, the gear milling machine body (1) is started to perform the gear milling operation.

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