A helical shaft grinding machine tool and its processing method

Abstract

This invention relates to the field of cylindrical grinding technology, and discloses a helical shaft grinding machine tool and its processing method. The machine tool is equipped with a slide table and a grinding mechanism. A fixing mechanism is provided on the slide table. The machine tool also includes a locking component, a baffle, a tilting assembly, and an external hydraulic cylinder. A rack structure is provided on the telescopic end of the external hydraulic cylinder. An arc-shaped gear ring is provided on the tilting assembly. The cleaning mechanism includes a cleaning component and a reversing component. The cleaning component is used to clean the surface of the metal shaft, and the reversing component is used to push the cleaning component toward the ground metal shaft. This invention achieves convenient cleaning of the ground metal shaft while more thoroughly removing oil, grease, debris, and dust, thereby greatly improving the quality of subsequent laser welding. It also enables cleaning of metal shafts of different diameters.

Description

Technical Field

[0001] This invention relates to the field of cylindrical grinding technology, specifically to a helical shaft grinding machine tool and its processing method. Background Technology

[0002] Cylindrical grinding machines are used to process cylindrical, conical, or other shaped external surfaces and shoulder end faces. They are the most widely used type of grinding machine and can process various cylindrical and conical external surfaces and shoulder end faces. Generally, they consist of a cast iron bed as the base, a worktable, a headstock and tailstock that support and drive the workpiece rotation, a grinding wheel holder (grinding head) that mounts the grinding wheel, and a transverse feed mechanism that controls the size of the workpiece being ground. A helical bar refers to a metal shaft with helical blades. When processing such a metal shaft, it is first ground to a suitable diameter using a cylindrical grinding machine, and then the helical blades are welded to the ground metal shaft using laser welding.

[0003] Existing cylindrical grinding machines mostly employ a method of simultaneously grinding and spraying grinding fluid to cool the grinding wheel and metal shaft during grinding. The sprayed grinding fluid also cleans up the debris generated during the grinding process. However, in actual processing, the grinding fluid residue on the surface of the metal shaft causes some debris to "stick" to it. This necessitates manual cleaning of the metal shaft surface before subsequent laser welding, significantly reducing the efficiency of batch processing. Furthermore, the presence of grease-like substances in existing grinding fluids can easily adhere to the metal shaft. During subsequent laser welding, the gases generated by the thermal decomposition of the grease can easily form closed bubbles in the molten pool. After cooling, these bubbles form pores, thus reducing the fatigue strength of the weld. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a helical shaft grinding machine tool and its processing method, thus solving the aforementioned problems.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a spiral shaft grinding machine tool, including a machine base, a slide table and a grinding mechanism are provided on the machine base, a fixing mechanism is provided on the slide table, the fixing mechanism is used to fix the metal shaft, during grinding, the fixing mechanism can drive the metal shaft to rotate, the grinding mechanism is used to grind the metal shaft, the machine base is also provided with a locking component, a baffle, a tilting component, an external hydraulic cylinder and a cleaning mechanism, and a rack structure is provided on the telescopic end of the external hydraulic cylinder;

[0006] The flipping component is provided with a toothed ring with an arc distribution, and the flipping component is used to drive the baffle to flip.

[0007] The cleaning mechanism includes a cleaning component and a reversing component. The cleaning component is used to clean the surface of the metal shaft, and the reversing component is used to push the cleaning component toward the ground metal shaft.

[0008] The extension stroke of the external hydraulic cylinder is provided with an engagement stroke and a disengagement stroke in sequence;

[0009] During the engagement stroke, the rack structure can engage with the gear ring, and the baffle rotates due to the rotation of the flipping assembly until the inner side of the baffle rotates to the protective position for protecting the fixing mechanism. At this time, the locking member locks the baffle.

[0010] During the separation stroke, the rack structure is not engaged with the gear ring, and the baffle is always locked. When the external hydraulic cylinder moves to contact the reversing component, it can push the cleaning component to move towards the metal shaft in a force-accumulating manner through the reversing component, so that the vertical line segment between the position of the cleaning component and the metal shaft becomes shorter.

[0011] Preferably, the flipping assembly includes a semi-circular gear ring, a rack, and a C-shaped retaining plate. A connecting square rod is fixedly connected to the outer side of the semi-circular gear ring. The connecting square rod is fixedly connected to the baffle plate and distributed on both sides of the baffle plate. A fixed shaft is hinged to the inner side of the connecting square rod. The fixed shaft is fixedly connected to the machine base. When the rack moves, it can drive the semi-circular gear ring to rotate.

[0012] Preferably, the rack is fixedly connected to the C-shaped card plate, and a connecting rod is fixedly connected to the end of the C-shaped card plate away from the rack. An inner groove is provided on the connecting square rod on the left side. When the C-shaped card plate moves, the C-shaped card plate can be inserted into the inner groove. The locking component includes an arc-shaped slot and a round-headed insert rod. The arc-shaped slot is provided on the connecting square rod on the right side. The round-headed insert rod is fixedly connected to the machine base. After the baffle is flipped, the round-headed insert rod can be inserted into the arc-shaped slot.

[0013] Preferably, a support rod is attached to the bottom surface of the baffle, a support plate is fixedly connected to the bottom of the support rod, the support plate is fixedly connected to the machine base, and a transparent glass is provided on the baffle, the transparent glass being tempered glass.

[0014] Preferably, a mounting plate is fixedly connected to the outer side of the external hydraulic cylinder, the mounting plate is fixedly connected to the machine base, and the output shaft of the external hydraulic cylinder passes through the mounting plate and extends out of the mounting plate.

[0015] Preferably, the reversing assembly includes a push plate and a bend. The push plate is fixedly connected to the output shaft of the external hydraulic cylinder. The side of the push plate away from the external hydraulic cylinder is fixedly connected to the connecting rod. The bend is mounted on the machine base by a clamp. A push rod is slidably connected to the inner side of the bend. A pressure plate is fixedly connected to the outer end of the push rod. A return spring is fixedly connected to the pressure plate. The end of the return spring away from the pressure plate is fixedly connected to the bend. A connecting pipe is fixedly connected to the end of the bend away from the pressure plate. A vertical pipe is fixedly connected to the end of the connecting pipe away from the bend. The bend, connecting pipe, and vertical pipe are interconnected.

[0016] Preferably, a sliding rod is slidably connected to the inner side of the vertical tube, and a mounting base is fixedly connected to the sliding rod through the vertical tube. A limiting rod is fixedly connected to the mounting base, and the limiting rods are distributed on both sides of the mounting base. A bracket is slidably connected to the outer side of the limiting rod, and a connecting spring is fixedly connected to the limiting rod. The end of the connecting spring away from the limiting rod is fixedly connected to the bracket.

[0017] Preferably, the cleaning assembly includes a nitrogen nozzle and a laser pulse head, both of which are mounted on the mounting base. The laser pulse head is externally connected to a laser device, and the nitrogen nozzle is externally connected to a nitrogen cylinder with an electric valve via a connecting pipe, with the connecting pipe connected to the electric valve.

[0018] Preferably, the bottom of the bracket is slidably connected to an outer slide rail, and the outer slide rail has a plurality of horizontally arrayed adjusting screw holes. Adjusting bolts are threaded into the screw holes, and the adjusting bolts pass through the bracket and are threaded into the screw holes. An internal hydraulic cylinder is provided on the machine base, and the internal hydraulic cylinder is used to drive the slide table to move. The fixing mechanism includes a three-jaw chuck, a tailstock, and an inner slide rail. The inner slide rail is installed on the slide table, and the three-jaw chuck and the tailstock are installed in the inner slide rail. The grinding mechanism includes an adjusting table and a grinding wheel spray pipe. The adjusting table is fixedly connected to the machine base, and the grinding wheel is slidably connected to the adjusting table. Both the three-jaw chuck and the outer side of the grinding wheel are provided with driving mechanisms. The spray pipe is installed on the grinding wheel and is used to spray grinding fluid.

[0019] A method for grinding a spiral shaft includes the following steps:

[0020] S1. Fix the metal shaft using a fixing mechanism and adjust the position of the grinding wheel using an adjusting table;

[0021] S2. The external hydraulic cylinder drives the tilting assembly to operate, and the operation of the tilting assembly drives the baffle to tilt.

[0022] S3. Grind the metal shaft using the combination of the internal hydraulic cylinder, slide table and grinding wheel until the metal shaft is ground to the specified diameter;

[0023] S4. The reversing assembly is driven by the operation of the external hydraulic cylinder. The operation of the reversing assembly pushes the cleaning assembly toward the metal shaft, and then the cleaning assembly cleans the surface of the metal shaft.

[0024] Compared with the prior art, the present invention provides a helical shaft grinding machine tool and its processing method, which has the following beneficial effects:

[0025] 1. In this invention, when cleaning a ground metal shaft is required, the external hydraulic cylinder is switched to a separate stroke. At this time, the hydraulic cylinder moves towards the reversing assembly. After the telescopic shaft of the hydraulic cylinder contacts the reversing assembly, the reversing assembly operates. The operation of the reversing assembly pushes the cleaning assembly towards the ground metal shaft. Then, the metal shaft is moved by the slide table. When the metal shaft passes the position of the cleaning assembly, the cleaning assembly cleans the surface of the metal shaft, thereby removing residual oil, grease, debris, and dust. This achieves convenient cleaning of the ground metal shaft while more thoroughly removing oil, grease, debris, and dust, thus greatly improving the quality of subsequent laser welding. Furthermore, by controlling the movement stroke of the telescopic shaft on the external hydraulic cylinder, the pushing stroke of the reversing assembly can also be adjusted, thus facilitating the cleaning of metal shafts of different diameters and greatly expanding the cleaning range.

[0026] 2. In this invention, before grinding, the external hydraulic cylinder is adjusted to the engagement stroke state. At this time, the rack structure on the extension shaft of the hydraulic cylinder meshes with the gear ring structure on the flipping assembly. Then, as the external hydraulic cylinder rotates, the gear ring structure drives the flipping assembly to rotate. The rotation of the flipping assembly drives the baffle to flip. The flipped baffle can close the direction facing the user, thereby preventing debris or grinding fluid from splashing during the grinding process of the grinding mechanism on the metal shaft, which would affect the operator. Furthermore, when not in use, the baffle is in a horizontal state, and at this time the baffle can also be used as a placement platform, further improving its practicality.

[0027] 3. In this invention, after the flipping component drives the baffle to flip and close the slide, the C-shaped card plate will move towards the inner groove on the connecting square rod as the rack moves, and then be inserted into the inner groove on the connecting square rod. At the same time, the round-headed insert rod can be inserted into the arc slot. At this time, the C-shaped card plate and the round-headed insert rod can lock the baffle, thereby preventing it from rotating. Attached Figure Description

[0028] Figure 1 This is a first-view schematic diagram of the present invention;

[0029] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle

[0030] Figure 3This is a schematic diagram from a second perspective of the present invention;

[0031] Figure 4 This is a schematic diagram of the third-view structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the fourth perspective structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the fifth perspective of the present invention;

[0034] Figure 7 This is a schematic diagram of the sixth perspective of the present invention;

[0035] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point B;

[0036] Figure 9 This is a schematic diagram of the cleaning mechanism of the present invention;

[0037] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point C;

[0038] Figure 11 This is a schematic diagram of the overall cleaning mechanism of the present invention;

[0039] Figure 12 For this Figure 11 Enlarged schematic diagram of the structure at point D.

[0040] In the diagram: 1. Machine base; 2. Slide table; 3. Grinding mechanism; 31. Adjustment table; 32. Grinding wheel; 33. Nozzle; 4. Fixing mechanism; 41. Three-jaw chuck; 42. Tailstock; 43. Inner slide rail; 51. Baffle; 511. Support rod; 512. Support plate; 513. Transparent glass; 52. Rack; 521. C-shaped chuck; 522. Connecting rod; 523. Inner groove; 524. Arc slot; 525. Round head insert rod; 53. Tilting assembly; 531. Semi-circular gear ring; 532. Connecting square rod; 5 33. Fixed shaft; 6. Cleaning mechanism; 61. Nitrogen nozzle; 62. Laser pulse head; 63. Push plate; 64. Reversing assembly; 641. Bend; 642. Push rod; 643. Pressure plate; 644. Return spring; 645. Connecting pipe; 646. Vertical pipe; 647. Slide rod; 648. Mounting base; 649. Limiting rod; 6410. Bracket; 6411. Connecting spring; 6412. Outer slide rail; 6413. Screw hole; 6414. Adjusting bolt; 7. Outer hydraulic cylinder; 71. Mounting plate. Detailed Implementation

[0041] 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.

[0042] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a helical shaft grinding machine tool and its processing method.

[0043] Example 1: Please refer to Figures 1-12 A spiral shaft grinding machine tool includes a machine base 1, a slide table 2 and a grinding mechanism 3 on the machine base 1, a fixing mechanism 4 on the slide table 2, the fixing mechanism 4 is used to fix the metal shaft, the fixing mechanism 4 can drive the metal shaft to rotate during grinding, the grinding mechanism 3 is used to grind the metal shaft, the machine base 1 is also provided with a locking component, a baffle 51, a tilting component 53, an external hydraulic cylinder 7 and a cleaning mechanism 6, and a rack 52 structure is provided on the telescopic end of the external hydraulic cylinder 7;

[0044] The flipping component 53 is provided with a toothed ring with an arc distribution, and the flipping component 53 is used to drive the baffle 51 to flip.

[0045] The cleaning mechanism 6 includes a cleaning component and a reversing component 64. The cleaning component is used to clean the surface of the metal shaft, and the reversing component 64 is used to push the cleaning component toward the ground metal shaft.

[0046] The extension stroke of the external hydraulic cylinder 7 is sequentially provided with an engagement stroke and a disengagement stroke;

[0047] During the meshing stroke, the rack 52 structure can mesh with the gear ring, and the baffle 51 rotates due to the rotation of the flipping component 53 until the inner side of the baffle 51 rotates to the protective position to protect the fixing mechanism 4. At this time, the locking member locks the baffle 51.

[0048] During the separation stroke, the rack 52 structure is not engaged with the gear ring, and the baffle 51 is always locked. When the outer hydraulic cylinder 7 moves to contact the reversing component 64, it can push the cleaning component to move towards the metal shaft in a force-accumulating manner through the reversing component 64, so that the vertical line segment between the position of the cleaning component and the metal shaft becomes shorter.

[0049] Initially, baffle 51 is in a horizontal position, which the user can use as a platform. When grinding is required, the metal shaft is fixed by the fixing mechanism 4, and then the outer hydraulic cylinder 7 is switched to the engagement stroke state. At this time, the rack 52 structure on the outer hydraulic cylinder 7 drives the gear ring structure on the tilting assembly 53 to tilt. The tilting assembly 53 then drives the baffle 51 to tilt until the inner side of the baffle 51 is rotated to the protective position that protects the fixing mechanism 4. After tilting, the baffle 51 can close the slide table 2. Then, the metal shaft is driven to rotate by the fixing mechanism 4. Then, the metal shaft is ground by the cooperation of the slide table 2 and the grinding mechanism 3. After grinding, the outer hydraulic cylinder 7 is switched to the disengagement stroke state. At this time, the telescopic shaft on the outer hydraulic cylinder 7 moves again. When the telescopic shaft on the outer hydraulic cylinder 7 contacts the reversing assembly 64, the reversing assembly 64 operates. The 64-axis operation pushes the cleaning component towards the ground metal shaft, and then the slide table 2 drives the metal shaft to move. When the metal shaft passes the position of the cleaning component, the cleaning component cleans the surface of the metal shaft, thereby removing residual oil, grease, debris, and dust, thus thoroughly removing oil, grease, debris, and dust from the metal shaft, greatly improving the quality of subsequent laser welding. Furthermore, by controlling the travel of the telescopic shaft of the external hydraulic cylinder 7, the travel of the cleaning component can be adjusted, making it convenient to clean metal shafts of different diameters, thus greatly expanding the cleaning range. The flipped baffle 51 can prevent debris or grinding fluid from splashing during the grinding process of the metal shaft by the grinding mechanism 3, thus avoiding impact on the operator. When not in use, the baffle 51 is in a horizontal state, at which point the baffle 51 can also be used as a placement table, further improving its practicality.

[0050] Example 2: See Figures 1-12Unlike Embodiment 1 described above, the flipping assembly 53 includes a semi-circular gear ring 531, a rack 52, and a C-shaped locking plate 521. A connecting square rod 532 is fixedly connected to the outer side of the semi-circular gear ring 531. The connecting square rod 532 is fixedly connected to the baffle 51, and the connecting square rods 532 are distributed on both sides of the baffle 51. A fixed shaft 533 is hinged to the inner side of the connecting square rod 532. The fixed shaft 533 is fixedly connected to the machine base 1. When the rack 52 moves, it drives the semi-circular gear ring 531 to rotate. The rack 52 is fixedly connected to the C-shaped locking plate 521. A connecting rod 522 is fixedly connected to the end of the C-shaped locking plate 521 away from the rack 52. An inner groove 523 is formed on the left side of the connecting square rod 532. When the C-shaped locking plate 521 moves, the C-shaped locking plate... 521 can be inserted into the inner groove 523. The locking component includes an arc slot and a round-headed rod 525. The arc slot 524 is opened on the right side connecting square rod 532. The round-headed rod 525 is fixedly connected to the machine base 1. After the baffle 51 is flipped, the round-headed rod 525 can be inserted into the arc slot 524. The bottom surface of the baffle 51 is attached to the support rod 511. The bottom of the support rod 511 is fixedly connected to the support plate 512. The support plate 512 is fixedly connected to the machine base 1. The baffle 51 is provided with transparent glass 513. The transparent glass 513 is made of tempered glass. The outer side of the external hydraulic cylinder 7 is fixedly connected to the mounting plate 71. The mounting plate 71 is fixedly connected to the machine base 1. The output shaft of the external hydraulic cylinder 7 passes through the mounting plate 71 and extends out of the mounting plate 71.

[0051] Initially, the baffle 51 is in a horizontal position. At this time, the support rod 511 and the support plate 512 can support the baffle 51, and the baffle 51 can be used as a placement table. Then, during grinding, the external hydraulic cylinder 7 is activated. The movement of the external hydraulic cylinder 7 drives the C-shaped clamping plate 521 and the rack 52 to move. The movement of the rack 52 drives the semi-circular gear ring 531 to rotate. The rotation of the semi-circular gear ring 531 drives the connecting square rod 532 to move around the fixed axis 533. The movement of the connecting square rod 532 drives the baffle 51 to move. At this time, the baffle 51 is flipped. Then, the round-headed insert rod 525 is inserted into the arc slot 524 to position the connecting square rod 532. At the same time, the C-shaped clamping plate 521 is inserted into the inner groove 523. At this time, the position of the baffle 51 is fixed with the cooperation of the C-shaped clamping plate 521 and the round-headed insert rod 525.

[0052] It should be noted that a return spring is fixedly connected to one end of the round-headed insertion rod 525. The end of the return spring away from the round-headed insertion rod 525 is fixedly connected to the machine base 1. The round-headed insertion rod 525 is axially slidably connected to the machine base 1. When the baffle 51 flips, the connecting square rod 532 presses the round-headed insertion rod 525. At this time, the round-headed insertion rod 525 presses the return spring, and the elastic force of the return spring is stored. After the baffle 51 flips to the position to protect the slide table 2, the arc slot 524 on the connecting square rod 532 moves to the round-headed insertion rod 525. At this time, the return spring pushes the round-headed insertion rod 525 into the arc slot 524. When the baffle 51 returns to its original position, the flipping force of the baffle 51 is greater than the elastic force of the return spring. At this time, the connecting square rod 532 forces the arc slot 524 to separate from the round-headed insertion rod 525.

[0053] Example 3: See Figures 1-12 Unlike Embodiment 2 described above, the reversing assembly 64 includes a push plate 63 and a bent pipe 641. The push plate 63 is fixedly connected to the output shaft of the external hydraulic cylinder 7. The side of the push plate 63 away from the external hydraulic cylinder 7 is fixedly connected to the connecting rod 522. The bent pipe 641 is mounted on the machine base 1 by a clamp. A push rod 642 is slidably connected to the inner side of the bent pipe 641. A pressure plate 643 is fixedly connected to the outer end of the push rod 642. A return spring 644 is fixedly connected to the pressure plate 643. The return spring 644 is located away from the pressure plate 642. One end of 43 is fixedly connected to the bend 641. The end of the bend 641 away from the pressure plate 643 is fixedly connected to the connecting pipe 645. The end of the connecting pipe 645 away from the bend 641 is fixedly connected to the vertical pipe 646. The bend 641, the connecting pipe 645, and the vertical pipe 646 are connected. Hydraulic oil is provided between the push rod 642 and the slide rod 647. The hydraulic oil is distributed in the bend 641, the connecting pipe 645, and the vertical pipe 646. The slide rod 647 is slidably connected to the inner side of the vertical pipe 646. The slide rod 647 passes through... A mounting base 648 is fixedly connected to a vertical pipe 646. Limiting rods 649 are fixedly connected to the mounting base 648, with the limiting rods 649 distributed on both sides of the mounting base 648. A bracket 6410 is slidably connected to the outer side of the limiting rods 649. A connecting spring 6411 is fixedly connected to the limiting rods 649, with the end of the connecting spring 6411 away from the limiting rods 649 fixedly connected to the bracket 6410. The cleaning assembly includes a nitrogen nozzle 61 and a laser pulse head 62. Both are installed on the mounting base 648, and the laser pulse head 62 is connected to the laser equipment. The nitrogen nozzle 61 is connected to the nitrogen cylinder with an electric valve through the connecting pipe, and the connecting pipe is connected to the electric valve. The bottom of the bracket 6410 is slidably connected to the outer slide rail 6412. The outer slide rail 6412 is provided with several horizontally arrayed adjustment screw holes 6413. The screw holes 6413 are internally threaded with adjustment bolts 6414. The adjustment bolts 6414 pass through the bracket 6410 and are threaded into the screw holes 6413.

[0054] When cleaning of the metal shaft is required, the position of the bracket 6410 is adjusted by adjusting bolt 6414 and screw hole 6413. When cleaning of the metal shaft is required, the outer hydraulic cylinder 7 is switched to the separation stroke state. After the outer hydraulic cylinder 7 is turned, the rack 52 structure on its telescopic shaft separates from the flipping assembly 53, and drives the push plate 63 to gradually move towards the pressure plate 643. Then the push plate 63 squeezes the pressure plate 643, and the pressure plate 643 is driven to move into the bend 641. The movement of the pressure plate 643 squeezes the return spring 644 and squeezes the push rod 642. The movement of the push rod 642 transmits the pressure of the push plate 63 to the slide rod 647 through hydraulic oil. At this time, the slide rod 647 is extended out of the vertical tube 646. The movement of the slide rod 647 drives the mounting seat 648 to move. The movement of 648 drives the movement of the limit rod 649, which in turn presses against the connecting spring 6411. At this time, the nitrogen nozzle 61 and the laser pulse head 62 on the mounting base 648 are pushed toward the metal shaft. Then, the slide table 2 drives the metal shaft to move. When the metal shaft passes the position of the nitrogen nozzle 61, the nitrogen nozzle 61 blows nitrogen gas onto the surface of the metal shaft, thereby blowing away the grinding fluid, debris, and dust remaining on the surface of the metal shaft. After being cleaned by the nitrogen nozzle 61, the metal shaft moves to the laser pulse head 62, where the laser pulse head 62 cleans the surface of the metal shaft again, thereby removing the oil, grease, debris, and dust remaining on the metal shaft. The nitrogen nozzle 61 and the laser pulse head 62 thoroughly clean the surface of the metal shaft.

[0055] Example 4: See Figures 1-12 Unlike the above embodiment 3, the machine base 1 is equipped with an internal hydraulic cylinder, which is used to drive the slide table 2 to move. The fixing mechanism 4 includes a three-jaw chuck 41, a tailstock 42 and an inner slide rail 43. The inner slide rail 43 is installed on the slide table 2. The three-jaw chuck 41 and the tailstock 42 are installed inside the inner slide rail 43. The grinding mechanism 3 includes an adjusting table 31, a grinding wheel 32 and a spray pipe 33. The adjusting table 31 is fixedly connected to the machine base 1. The grinding wheel 32 is slidably connected to the adjusting table 31. The three-jaw chuck 41 and the grinding wheel 32 are both provided with driving mechanisms on their outer sides. The spray pipe 33 is installed on the grinding wheel 32 and is used to spray grinding fluid.

[0056] In use, the two ends of the metal shaft are fixed by the three-jaw chuck 41 and the tailstock 42. Then, the position of the grinding wheel 32 is adjusted by the adjusting table 31. Then, the three-jaw chuck 41 and the grinding wheel 32 are driven to rotate by the drive mechanism, thereby grinding the metal shaft. Then, the slide table 2 is driven to move along the machine table 1 by the internal hydraulic cylinder, thereby realizing the grinding of the entire metal shaft. During grinding, grinding fluid is sprayed through the nozzle 33 to cool the metal shaft and the grinding wheel 32. After that, the grinding of the metal shaft can be realized.

[0057] A method for grinding a spiral shaft includes the following steps:

[0058] S1. The metal shaft is fixed by the fixing mechanism 4, and the position of the grinding wheel 32 is adjusted by the adjusting table 31;

[0059] S2. The external hydraulic cylinder 7 drives the tilting assembly 53 to operate, and the operation of the tilting assembly 53 drives the baffle 51 to tilt.

[0060] S3. Grind the metal shaft by means of the cooperation of the internal hydraulic cylinder, slide table 2 and grinding wheel 32 until the metal shaft is ground to the specified diameter;

[0061] S4. The reversing assembly 64 is driven to operate by the operation of the external hydraulic cylinder 7. The operation of the reversing assembly 64 pushes the cleaning assembly toward the metal shaft, and then the surface of the metal shaft is cleaned by the cleaning assembly.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A helical shaft grinding machine tool, comprising a machine base, characterized in that: The machine base is equipped with a slide table and a grinding mechanism. The slide table is equipped with a fixing mechanism for fixing the metal shaft. During grinding, the fixing mechanism can drive the metal shaft to rotate. The grinding mechanism is used to grind the metal shaft. The machine base is also equipped with a locking component, a baffle, a tilting assembly, an external hydraulic cylinder, and a cleaning mechanism. The telescopic end of the external hydraulic cylinder is equipped with a rack structure. The flipping component is provided with a toothed ring with an arc distribution, and the flipping component is used to drive the baffle to flip. The cleaning mechanism includes a cleaning component and a reversing component. The cleaning component is used to clean the surface of the metal shaft, and the reversing component is used to push the cleaning component toward the ground metal shaft. The extension stroke of the external hydraulic cylinder is provided with an engagement stroke and a disengagement stroke in sequence; During the engagement stroke, the rack structure can engage with the gear ring, and the baffle rotates due to the rotation of the flipping assembly until the inner side of the baffle rotates to the protective position for protecting the fixing mechanism. At this time, the locking member locks the baffle. During the separation stroke, the rack structure is not engaged with the gear ring, and the baffle is always locked. When the external hydraulic cylinder moves to contact the reversing component, it can push the cleaning component to move towards the metal shaft in a force-accumulating manner through the reversing component, so that the vertical line segment between the position of the cleaning component and the metal shaft becomes shorter. The flipping assembly includes a semi-circular gear ring, a rack, and a C-shaped retaining plate. A connecting square rod is fixedly connected to the outer side of the semi-circular gear ring. The connecting square rod is fixedly connected to the baffle plate and distributed on both sides of the baffle plate. A fixed shaft is hinged to the inner side of the connecting square rod. The fixed shaft is fixedly connected to the machine base. When the rack moves, it can drive the semi-circular gear ring to rotate. The rack is fixedly connected to the C-shaped locking plate. A connecting rod is fixedly connected to the end of the C-shaped locking plate away from the rack. An inner groove is formed on the connecting square rod on the left side. When the C-shaped locking plate moves, it can be inserted into the inner groove. The locking component includes an arc-shaped slot and a round-headed insert. The arc-shaped slot is formed on the connecting square rod on the right side. The round-headed insert is fixedly connected to the machine base. After the baffle is flipped, the round-headed insert can be inserted into the arc-shaped slot. The reversing assembly includes a push plate and a bend. The push plate is fixedly connected to the output shaft of the external hydraulic cylinder. The side of the push plate away from the external hydraulic cylinder is fixedly connected to the connecting rod. The bend is mounted on the machine base by a clamp. A push rod is slidably connected to the inner side of the bend. A pressure plate is fixedly connected to the outer end of the push rod. A return spring is fixedly connected to the pressure plate. The end of the return spring away from the pressure plate is fixedly connected to the bend. A connecting pipe is fixedly connected to the end of the bend away from the pressure plate. A vertical pipe is fixedly connected to the end of the connecting pipe away from the bend. The bend, connecting pipe, and vertical pipe are connected.

2. The spiral shaft grinding machine tool according to claim 1, characterized in that: A support rod is attached to the bottom surface of the baffle, and a support plate is fixedly connected to the bottom of the support rod. The support plate is fixedly connected to the machine base, and a transparent glass is provided on the baffle. The transparent glass is made of tempered glass.

3. The spiral shaft grinding machine tool according to claim 1, characterized in that: An mounting plate is fixedly connected to the outer side of the external hydraulic cylinder. The mounting plate is fixedly connected to the machine base. The output shaft of the external hydraulic cylinder passes through the mounting plate and extends out of the mounting plate.

4. The spiral shaft grinding machine tool according to claim 1, characterized in that: A sliding rod is slidably connected to the inner side of the vertical tube. The sliding rod passes through the vertical tube and is fixedly connected to a mounting base. A limit rod is fixedly connected to the mounting base. The limit rods are distributed on both sides of the mounting base. A bracket is slidably connected to the outer side of the limit rod. A connecting spring is fixedly connected to the limit rod. The end of the connecting spring away from the limit rod is fixedly connected to the bracket.

5. A spiral shaft grinding machine tool according to claim 4, characterized in that: The cleaning assembly includes a nitrogen nozzle and a laser pulse head, both of which are mounted on the mounting base. The laser pulse head is connected to an external laser device, and the nitrogen nozzle is connected to a nitrogen cylinder with an electric valve via a connecting pipe. The connecting pipe is connected to the electric valve.

6. The spiral shaft grinding machine tool according to claim 5, characterized in that: The bottom of the bracket is slidably connected to an outer slide rail, which has several horizontally arrayed adjusting screw holes. Adjusting bolts are threaded into these screw holes, passing through the bracket and threaded into the screw holes. An internal hydraulic cylinder is installed on the machine base to drive the slide table. The fixing mechanism includes a three-jaw chuck, a tailstock, and an inner slide rail. The inner slide rail is mounted on the slide table, and the three-jaw chuck and tailstock are installed within the inner slide rail. The grinding mechanism includes an adjusting table and a grinding wheel spray nozzle. The adjusting table is fixedly connected to the machine base, and the grinding wheel is slidably connected to the adjusting table. Driving mechanisms are provided on the outer sides of both the three-jaw chuck and the grinding wheel. The spray nozzle is mounted on the grinding wheel and is used to spray grinding fluid.

7. A method for grinding a spiral shaft, using a spiral shaft grinding machine tool as described in any one of claims 1-6, characterized in that: Includes the following steps: S1. Fix the metal shaft using a fixing mechanism and adjust the position of the grinding wheel using an adjusting table; S2. The external hydraulic cylinder drives the tilting assembly to operate, and the operation of the tilting assembly drives the baffle to tilt. S3. Grind the metal shaft using the combination of the internal hydraulic cylinder, slide table and grinding wheel until the metal shaft is ground to the specified diameter; S4. The reversing assembly is driven by the operation of the external hydraulic cylinder. The operation of the reversing assembly pushes the cleaning assembly toward the metal shaft, and then the cleaning assembly cleans the surface of the metal shaft.

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