Device and method for machining spiral groove in cavity

Abstract

The invention discloses a device and method for machining a spiral groove in a cavity, and relates to the technical field of spiral groove machining. The device comprises a box body, a supporting frame is fixedly connected to the top of the box body, a driving shaft is rotationally connected to the supporting frame, a machining assembly used for conducting spiral groove machining on a workpiece cavity is arranged at the bottom of the driving shaft, and a sleeve is rotationally connected to the top of the box body; the sleeve is arranged on the driving shaft in a sleeving mode, and a control assembly installed on the supporting frame is arranged on one side of the sleeve. According to the device and method for machining the spiral groove in the cavity, a series of mechanical transmission parts such as a rotating rod, a linkage rod and a sliding frame are driven by a control motor, intermittent downward movement of assemblies such as a trapezoidal block, a transverse rod, a movable plate and a working motor is achieved, and the distance and depth of the spiral groove are adjusted; the precise control mode ensures that the length of the spiral groove in the cavity of the workpiece can be adjusted as required, so that different workpieces and different machining requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of spiral groove processing, and in particular to a device and method for processing a spiral groove in a cavity. Background Art

[0002] In the field of cavity processing, spiral groove processing has always been a key technology and is widely used in the manufacture of various mechanical parts and equipment. Traditional cavity processing spiral groove devices mainly rely on manual operation or simple mechanized equipment to complete. These existing technologies usually use fixed mechanical structures and realize spiral groove processing through manual adjustment or preset mechanical transmission paths; However, the existing technology has many defects in processing spiral grooves. First, due to the fixedness of the mechanical structure, the pitch and depth of the spiral grooves are often difficult to accurately control, resulting in different sizes of the processed spiral grooves, which cannot meet the high-precision requirements of different workpieces and processing needs. This not only affects the quality of the product, but also increases the difficulty of subsequent processing and assembly. Secondly, the existing technology often requires multiple repeated operations to complete the processing of a longer spiral groove during the processing process, which not only reduces the processing efficiency, but also increases the production cost and time cost. In addition, multiple repeated processing may also lead to a decrease in the surface quality of the workpiece or even damage the workpiece, further affecting the reliability and service life of the product. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a device and method for machining spiral grooves in a cavity, which solves the technical problems mentioned in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for processing spiral grooves in a cavity, comprising a box, a support frame is fixedly connected to the top of the box, a driving shaft is rotatably connected to the support frame, a processing component for processing the spiral groove of the workpiece cavity is arranged at the bottom of the driving shaft, a sleeve is rotatably connected to the top of the box, the sleeve is sleeved on the driving shaft, and a control component installed on the support frame is arranged on one side of the sleeve; The control component includes a second fixed plate fixedly mounted on the support frame, first sliding rods are fixedly connected to both sides of the surface of the second fixed plate, trapezoidal blocks are slidably connected to the first sliding rods, a cross bar is fixedly connected between the two trapezoidal blocks, a moving plate is fixedly connected to the bottom end of the cross bar, a working motor is fixedly mounted on the moving plate, an output end of the working motor is fixedly connected to a mounting shaft, and a gear set is arranged on the mounting shaft.

[0005] As a further preferred embodiment of the present technical solution, the gear set includes a second gear, a third gear, and a fourth gear. The diameters of the second gear, the third gear, and the fourth gear are the same, and the teeth of the second gear, the third gear, and the fourth gear decrease successively.

[0006] As a further preferred embodiment of the present technical solution, a sliding frame is slidably connected to the second fixed plate, a row of rotating shafts are rotatably connected to one side of the sliding frame in the vertical direction, a long rod and a short rod are fixedly connected to the outer wall of the rotating shaft, and the positions of the long rod and the cross rod correspond to each other, and a tension spring is arranged between the short rod and the sliding frame.

[0007] As a further preferred embodiment of the present technical solution, a control motor is fixedly installed on one side of the second fixed plate, a rotating rod is fixedly connected to the output end of the control motor, a connecting rod is rotatably connected to the other end of the rotating rod, and the other end of the connecting rod is rotatably connected to the slide frame.

[0008] As a further preferred embodiment of the present technical solution, a second support plate is fixedly connected on both sides of the second fixed plate, a row of moving rods is slidably connected to the second support plate, one end of the moving rod is fixedly connected to a triangular block adapted to the trapezoidal block, the other end of the moving rod is fixedly connected to a limiting block, and a second damping spring is arranged between the triangular block and the second support plate and is sleeved on the moving rod.

[0009] As a further optimization of the present technical solution, a driving motor is fixedly installed on the top of the support frame, a sleeve rod is fixedly connected to the output end of the driving motor, a spline rod is fixedly installed on the top of the driving shaft, the spline rod and the sleeve rod are slidably adapted in the vertical direction, and a spiral groove is opened on the outer wall of the driving shaft.

[0010] As a further preferred embodiment of the present technical solution, the processing assembly includes a mounting cylinder fixedly mounted at the bottom of the driving shaft, a servo motor is fixedly mounted on the inner wall of the mounting cylinder, an active bevel gear is fixedly connected to the output end of the servo motor, a first fixed plate is mounted in a circular array on the outer wall of the mounting cylinder, a driven bevel gear meshing with the active bevel gear is rotatably connected to the first fixed plate, and a processing tool is connected to the axis of the driven bevel gear through a shaft.

[0011] As a further preferred embodiment of the present technical solution, a positioning plate fixedly mounted on the box body is provided on one side of the bottom end of the sleeve, a ring mounted on the sleeve is fixedly connected to the positioning plate, a slider is slidably connected to the outer wall of the ring, a return spring mounted on the ring is provided on one side of the slider, the other end of the return spring is fixedly connected to the positioning plate, a first gear is fixedly connected to the top of the slider through a connecting rod, and the first gear is rotatably mounted on the first gear on the sleeve, a guide rod is fixedly connected to the inner wall of the sleeve, and the other end of the guide rod is slidably mounted in the spiral groove.

[0012] As a further preferred embodiment of the present technical solution, a first cylinder is fixedly installed in the inner cavity of the box body, a first support plate is fixedly installed at the output end of the first cylinder, a second cylinder is fixedly installed on both sides of the top of the first support plate, and a clamping plate is fixedly installed at the output end of the second cylinder.

[0013] The present invention also discloses a method for processing a cavity spiral groove, which specifically comprises the following steps: Step 1: The workpiece is clamped by the second cylinder, and the first cylinder moves the first support plate to adjust the position of the workpiece and the processing assembly to facilitate spiral groove processing; Step 2: Control the motor to drive the linkage rod to move back and forth, thereby driving the slide frame and other components to move downward intermittently, and the gear set is meshed with the first gear in turn for transmission. At the same time, the working motor drives the mounting shaft and the gear set to rotate synchronously, increasing the amplitude of the driving shaft rotating and moving downward, thereby increasing the length of the spiral groove; Step three, the driving motor drives the sleeve rod and the spline rod to rotate synchronously, and then drives the processing component to rotate. When the gear set is engaged with the first gear, it drives the sleeve and the guide rod to rotate synchronously and compresses the reset spring, so that the driving shaft moves downward synchronously during rotation, and the processing tool performs spiral groove processing on the workpiece cavity. When the gear set is not engaged with the first gear, the component is reset, and the servo motor drives the active bevel gear to rotate, and then drives the driven bevel gear and the processing tool to rotate synchronously to complete the spiral groove processing.

[0014] Compared with the prior art, it has the following beneficial effects: By controlling the motor to drive a series of mechanical transmission components such as the rotating rod, connecting rod, and slide frame, the intermittent downward movement of components such as the trapezoidal block, cross bar, moving plate, and working motor is achieved, and the spacing and depth of the spiral groove are adjusted. This precise control method ensures that the length of the spiral groove in the workpiece cavity can be adjusted as needed, thereby meeting different workpieces and different processing requirements.

[0015] The working motor drives the mounting shaft and the second gear, the third gear and the fourth gear thereon to rotate synchronously, and the second gear, the third gear and the fourth gear are meshed with the first gear in turn, so that the rotation degrees of the sleeve and the guide rod increase in turn. This design allows longer spiral groove processing to be completed in one processing process, reduces the number of repeated processing, and thus improves processing efficiency.

[0016] By starting the drive motor, the sleeve rod and the spline rod can be driven to rotate synchronously, thereby realizing the synchronous rotation of the drive shaft and the processing assembly, which provides great flexibility for adjusting the position of the processing tool entering the workpiece cavity. This design allows the operator to accurately control the position of the processing tool according to actual needs to adapt to the processing requirements of different workpiece cavities; through the engagement of the gear set with the first gear, and the subsequent cooperation of the slider, guide rod and spiral groove, the drive shaft and the processing assembly can move downward while rotating. This composite motion mode enables the processing tool to effectively process a spiral groove in the workpiece cavity, meeting the processing requirements of a specific workpiece shape; when the gear set is no longer engaged with the first gear, the reset spring can push the slider, the first gear and the guide rod to reset, preparing for the next processing operation. This automatic reset mechanism not only improves processing efficiency, but also reduces the complexity of manual operation and enhances the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the drive shaft, processing assembly and sleeve in the present invention; Figure 3 It is a structural schematic diagram of the processing assembly in the present invention; Figure 4 It is a schematic diagram of the structure of the sleeve and the drive shaft in the present invention; Figure 5 It is a structural schematic diagram of the control component in the present invention; Figure 6 It is a structural schematic diagram of the second fixed plate, trapezoidal block, cross bar and movable plate in the present invention; Figure 7 It is a structural schematic diagram of the moving plate and the gear set in the present invention; Figure 8 It is a schematic diagram of the structure of the sliding frame, the long rod, the short rod, the rotating rod and the connecting rod in the present invention; Fig. 9 It is a schematic structural diagram of the second support plate, the moving rod, the triangular block, the trapezoidal block and the cross bar in the present invention.

[0018] In the figure: 1, box; 2, support frame; 3, drive shaft; 4, processing assembly; 5, sleeve; 6, control assembly; 7, first support plate; 31, drive motor; 32, sleeve rod; 33, spline rod; 34, spiral groove; 41, mounting cylinder; 42, servo motor; 43, active bevel gear; 44, first fixed plate; 45, driven bevel gear; 46, processing tool; 51, positioning plate; 52, ring; 53, slider; 54, return spring; 55, first gear; 56, guide rod; 61, second fixed plate; 62, first slide rod; 63, trapezoidal block; 64, cross bar; 65, first Damping spring; 66, moving plate; 67, working motor; 68, mounting shaft; 69, second gear; 610, third gear; 611, fourth gear; 612, sliding frame; 613, rotating shaft; 614, long rod; 615, short rod; 616, tension spring; 617, control motor; 618, rotating rod; 619, connecting rod; 620, second supporting plate; 621, moving rod; 622, triangular block; 623, second damping spring; 624, limit block; 627, second sliding rod; 628, third damping spring; 71, first cylinder; 72, second cylinder; 73, splint. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings of the specification. 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 making creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: Combination Figure 1-Figure 9 As shown, the present invention provides a technical solution: a device for processing spiral grooves in a cavity, comprising a box body 1, a support frame 2 is fixedly connected to the top of the box body 1, a driving shaft 3 is rotatably connected to the support frame 2, a processing component 4 for processing the spiral groove of the workpiece cavity is arranged at the bottom of the driving shaft 3, a sleeve 5 is rotatably connected to the top of the box body 1, the sleeve 5 is sleeved on the driving shaft 3, and a control component 6 installed on the support frame 2 is arranged on one side of the sleeve 5; The control assembly 6 includes a second fixed plate 61 fixedly mounted on the support frame 2, first slide bars 62 are fixedly connected to both sides of the surface of the second fixed plate 61, a trapezoidal block 63 is slidably connected to the first slide bar 62, a cross bar 64 is fixedly connected between the two trapezoidal blocks 63, a moving plate 66 is fixedly connected to the bottom end of the cross bar 64, a working motor 67 is fixedly mounted on the moving plate 66, an output end of the working motor 67 is fixedly connected to a mounting shaft 68, and a gear set is arranged on the mounting shaft 68; The gear set includes a second gear 69, a third gear 610, and a fourth gear 611. The diameters of the second gear 69, the third gear 610, and the fourth gear 611 are the same, and the teeth of the second gear 69, the third gear 610, and the fourth gear 611 decrease in sequence. When the second gear 69, the third gear 610, and the fourth gear 611 move downward, they mesh with the first gear 55 in sequence. Since the teeth of the second gear 69, the third gear 610, and the fourth gear 611 decrease in sequence, the fourth gear 611, the third gear 610, and the second gear 69 drive the meshed first gear 55, the sleeve 5, and the guide rod 56 to rotate in sequence, thereby increasing the amplitude of the rotation and downward movement of the drive shaft 3, thereby lengthening the length of the processed spiral groove; A slide frame 612 is slidably connected to the second fixed plate 61. A row of rotating shafts 613 are rotatably connected to one side of the slide frame 612 in the vertical direction. A long rod 614 and a short rod 615 are fixedly connected to the outer wall of the rotating shaft 613. The positions of the long rod 614 and the cross bar 64 correspond to each other. A tension spring 616 is arranged between the short rod 615 and the slide frame 612. Under the elastic force of the tension spring 616, the short rod 615 is pulled to rotate toward the slide frame 612. A control motor 617 is fixedly installed on one side of the second fixed plate 61, and a rotating rod 618 is fixedly connected to the output end of the control motor 617, and the other end of the rotating rod 618 is rotatably connected to a connecting rod 619, and the other end of the connecting rod 619 is rotatably connected to the slide frame 612. By turning on the control motor 617 to drive the rotating rod 618 to rotate synchronously, the rotating rod 618 drives the connecting rod 619 to move back and forth, so that the connecting rod 619 drives the slide frame 612 located on the second fixed plate 61 to move back and forth, so that the slide frame 612 drives the rotating shaft 613, the long rod 614 and the short rod 615 to move back and forth, so that the long rod 614 can intermittently push the cross bar 64 to move downward, thereby driving the trapezoidal block 63, the moving plate 66, the working motor 67, the installation shaft 68 and the gear group to move downward intermittently; The second fixed plate 61 is fixedly connected with a second support plate 620 on both sides, and a row of moving rods 621 are slidably connected to the second support plate 620. One end of the moving rod 621 is fixedly connected with a triangular block 622 adapted to the trapezoidal block 63, and the other end of the moving rod 621 is fixedly connected with a limiting block 624. A second damping spring 623 sleeved on the moving rod 621 is arranged between the triangular block 622 and the second support plate 620. When the cross bar 64 drives the trapezoidal block 63 to slide downward on the first sliding rod 62 and compresses the first damping spring 65, the trapezoidal block 63 moves downward, which can push the triangular block 622, the moving rod 621 and the limiting block 624 to move to one side and compress the second damping spring 623, when the trapezoidal block 63 slides over the triangular block 622, the triangular block 622, the moving rod 621 and the limit block 624 move and reset under the elastic force of the second damping spring 623, and at the same time, under the elastic force of the first damping spring 65, the trapezoidal block 63 and the cross bar 64 are pushed upward, so that the trapezoidal block 63 contacts the triangular block 622, and no longer moves upward under the blocking effect of the triangular block 622, and the trapezoidal block 63, the cross bar 64, the moving plate 66, the working motor 67, the mounting shaft 68 and the gear set are intermittently pushed downward in this reciprocating manner, so that the fourth gear 611, the third gear 610, and the second gear 69 are meshed with the first gear 55 in sequence for transmission; The movable plate 66 is slidably connected with a second slide bar 627 on both sides, and the second slide bar 627 is fixedly mounted on the support frame 2. The outer wall of the second slide bar 627 is sleeved with a third damping spring 628, and the third damping spring 628 is located at the bottom of the movable plate 66. When the movable plate 66 moves downward, the third damping spring 628 can be compressed. The second slide bar 627 is used to guide the up and down movement of the movable plate 66.

[0021] In the embodiment of the present invention, the control motor 617 is turned on to drive the rotating rod 618 to rotate synchronously, so that the rotating rod 618 drives the linkage rod 619 to move back and forth, so that the linkage rod 619 drives the slide frame 612 located on the second fixed plate 61 to move back and forth, so that the slide frame 612 drives the rotating shaft 613, the long rod 614 and the short rod 615 to move back and forth, so that the long rod 614 can intermittently push the cross bar 64 to move downward, thereby driving the trapezoidal block 63, the moving plate 66, the working motor 67, the mounting shaft 68 and the gear set to move intermittently downward; When the cross bar 64 drives the trapezoidal block 63 to slide downward on the first slide bar 62 and compresses the first damping spring 65, the trapezoidal block 63 moves downward, which can push the triangular block 622, the moving rod 621 and the limit block 624 to move to one side and compress the second damping spring 623. After the trapezoidal block 63 slides over the triangular block 622, the triangular block 622, the moving rod 621 and the limit block 624 move and reset under the elastic force of the second damping spring 623. At the same time, under the elastic force of the first damping spring 65, the trapezoidal block 63 and the cross bar 64 are pushed to move upward, so that the trapezoidal block 63 contacts the triangular block 622 and no longer moves upward under the blocking effect of the triangular block 622. In this way, the trapezoidal block 63, the cross bar 64, the moving plate 66, the working motor 67, the mounting shaft 68 and the gear set are intermittently pushed downward, so that the fourth gear 611, the third gear 610 and the second gear 69 are meshed with the first gear 55 in sequence for transmission. At the same time, the working motor 67 is turned on to drive the installation shaft 68 to rotate synchronously, so that the installation shaft 68 drives the fourth gear 611, the third gear 610, and the second gear 69 to rotate synchronously. When the fourth gear 611, the third gear 610, and the second gear 69 are meshed with the first gear 55 in sequence, the fourth gear 611, the third gear 610, and the second gear 69 drive the meshed first gear 55, the sleeve 5, and the guide rod 56 to rotate in increasing degrees in sequence, so that the driving shaft 3 rotates and moves downwardly to a greater extent, thereby lengthening the length of the processed spiral groove; By controlling the motor 617 to drive a series of mechanical transmission components such as the rotating rod 618, the connecting rod 619, the slide frame 612, etc., the trapezoidal block 63, the crossbar 64, the moving plate 66, the working motor 67 and other components are intermittently moved downward to adjust the pitch and depth of the spiral groove. This precise control method ensures that the length of the spiral groove in the workpiece cavity can be adjusted as needed, thereby meeting different workpieces and different processing requirements; The working motor 67 drives the mounting shaft 68 and the second gear 69, the third gear 610 and the fourth gear 611 thereon to rotate synchronously. The second gear 69, the third gear 610 and the fourth gear 611 are meshed and transmitted with the first gear 55 in turn, so that the degree of rotation of the sleeve 5 and the guide rod 56 increases in turn. This design allows longer spiral groove processing to be completed in one processing process, reduces the number of repeated processing, and thus improves processing efficiency.

[0022] Embodiment 2: Combination Figure 2 , Figure 3 , Figure 4 As shown, on the basis of the first embodiment, a driving motor 31 is fixedly installed on the top of the support frame 2, and a sleeve rod 32 is fixedly connected to the output end of the driving motor 31. A spline rod 33 is fixedly installed on the top of the driving shaft 3. The spline rod 33 and the sleeve rod 32 are slidably adapted in the vertical direction. A spiral groove 34 is provided on the outer wall of the driving shaft 3. When the driving shaft 3 moves up and down, it can drive the spline rod 33 located in the sleeve rod 32 to move up and down. When it is necessary to adjust the position of the processing tool 46 entering the workpiece cavity, the sleeve rod 32 is driven to rotate synchronously by turning on the driving motor 31, so that the sleeve rod 32 drives the spline rod 33 to rotate synchronously, so that the driving shaft 3 drives the processing assembly 4 to rotate synchronously, so that the processing position of the processing tool 46 can be adjusted; The processing assembly 4 includes a mounting cylinder 41 fixedly mounted at the bottom of the driving shaft 3, a servo motor 42 is fixedly mounted on the inner wall of the mounting cylinder 41, an active bevel gear 43 is fixedly connected to the output end of the servo motor 42, a first fixing plate 44 is mounted on the outer wall of the mounting cylinder 41 in a circumferential array, a driven bevel gear 45 meshing with the active bevel gear 43 is rotatably connected to the first fixing plate 44, a processing tool 46 is connected to the axis of the driven bevel gear 45 through a shaft, when it is necessary to perform spiral groove processing on the workpiece cavity, the active bevel gear 43 is driven to rotate by turning on the servo motor 42, so that the active bevel gear 43 drives the meshing driven bevel gear 45 to rotate synchronously, so that the driven bevel gear 45 drives the processing tool 46 to rotate synchronously, so that the processing tool 46 processes the spiral groove on the workpiece cavity; A positioning plate 51 fixedly mounted on the housing 1 is provided at one side of the bottom end of the sleeve 5, a ring 52 sleeved on the sleeve 5 is fixedly connected to the positioning plate 51, a slider 53 is slidably connected to the outer wall of the ring 52, a return spring 54 sleeved on the ring 52 is provided on one side of the slider 53, the other end of the return spring 54 is fixedly connected to the positioning plate 51, a first gear 55 is fixedly connected to the top of the slider 53 through a connecting rod, and the first gear 55 is rotatably mounted on the sleeve 5, a guide rod 56 is fixedly connected to the inner wall of the sleeve 5, and the other end of the guide rod 56 is slidably mounted in the spiral groove 34, when the gear set moves to mesh with the first gear 55, the rotating gear set drives the first gear 55 to rotate counterclockwise, which can drive the sleeve 5 to rotate synchronously, and the first gear 55 5. When the sleeve 5 rotates, it can drive the slider 53 and the guide rod 56 to rotate synchronously, and compress the reset spring 54, so that the guide rod 56 can cooperate with the spiral groove 34 during the rotation process, and can drive the drive shaft 3 to move downward synchronously during the rotation process, so that the drive shaft 3 can drive the processing component 4 to move downward synchronously during the rotation process, so that the processing tool 46 can process the spiral groove of the workpiece cavity; when the gear set is no longer engaged with the first gear 55, under the elastic force of the reset spring 54, the slider 53, the first gear 55, and the guide rod 56 are reset, so that the reciprocating control of the drive shaft 3 can drive the processing component 4 to move downward synchronously during the rotation process, so that the processing tool 46 can process the spiral groove of the workpiece cavity.

[0023] In the embodiment of the present invention, when it is necessary to adjust the position of the machining tool 46 entering the workpiece cavity, the driving motor 31 is turned on to drive the sleeve rod 32 to rotate synchronously, so that the sleeve rod 32 drives the spline rod 33 to rotate synchronously, so that the driving shaft 3 drives the machining assembly 4 to rotate synchronously, so that the machining position of the machining tool 46 can be adjusted; When the gear set drives the first gear 55 to rotate counterclockwise, it can drive the sleeve 5 to rotate synchronously. When the first gear 55 and the sleeve 5 rotate, they can drive the slider 53 and the guide rod 56 to rotate synchronously, and compress the reset spring 54, so that the guide rod 56 can cooperate with the spiral groove 34 during the rotation process, and can drive the drive shaft 3 to move downward synchronously during the rotation process, so that the drive shaft 3 can drive the processing assembly 4 to move downward synchronously during the rotation process, so that the processing tool 46 can process the spiral groove on the workpiece cavity; when the gear set is no longer engaged with the first gear 55, Under the elastic force of the reset spring 54, the slider 53, the first gear 55, and the guide rod 56 are reset, so that the reciprocating control drive shaft 3 can drive the processing component 4 to move downward synchronously during the rotation, so that the processing tool 46 can process the spiral groove of the workpiece cavity, and at the same time, the servo motor 42 is turned on to drive the active bevel gear 43 to rotate, so that the active bevel gear 43 drives the meshing driven bevel gear 45 to rotate synchronously, so that the driven bevel gear 45 drives the processing tool 46 to rotate synchronously, so that the processing tool 46 processes the spiral groove of the workpiece cavity.

[0024] Example 3: Combination Figure 1 As shown, on the basis of the second embodiment, a first cylinder 71 is fixedly installed in the inner cavity of the box body 1, a first support plate 7 is fixedly installed at the output end of the first cylinder 71, second cylinders 72 are fixedly installed on both sides of the top of the first support plate 7, and a clamping plate 73 is fixedly installed at the output end of the second cylinder 72.

[0025] In an embodiment of the present invention, after the workpiece to be processed is placed on the first support plate 7, the second cylinder 72 is turned on to drive the clamping plate 73 to clamp the workpiece, and then the first cylinder 71 is turned on according to the position of the processing component 4 to drive the first support plate 7 and the workpiece to move, so as to adjust the positional relationship between the workpiece and the processing component 4, thereby facilitating the processing of the spiral groove on the workpiece.

[0026] The present invention also discloses a method for processing a cavity spiral groove, which specifically comprises the following steps: Step 1: The second cylinder 72 clamps the workpiece, and the first cylinder 71 moves the first support plate 7 to adjust the position of the workpiece and the processing assembly 4 to facilitate spiral groove processing; Step 2: Control the motor 617 to drive the linkage rod 619 to move back and forth, thereby driving the slide frame 612 and other components to move downward intermittently, and the gear set is meshed with the first gear 55 in turn. At the same time, the working motor 67 drives the mounting shaft 68 and the gear set to rotate synchronously, increasing the amplitude of the drive shaft 3 rotating and moving downward, thereby increasing the length of the spiral groove; Step three, the driving motor 31 drives the sleeve rod 32 and the spline rod 33 to rotate synchronously, and then drives the processing component 4 to rotate. When the gear set is engaged with the first gear 55, it drives the sleeve 5 and the guide rod 56 to rotate synchronously and compress the reset spring 54, so that the driving shaft 3 moves downward synchronously during rotation, and the processing tool 46 performs spiral groove processing on the workpiece cavity. When the gear set is not engaged with the first gear 55, the component is reset, and the servo motor 42 drives the active bevel gear 43 to rotate, and then drives the driven bevel gear 45 and the processing tool 46 to rotate synchronously to complete the spiral groove processing.

[0027] 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 device for machining a spiral groove in a cavity, comprising a housing (1), characterized in that: The top of the box body (1) is fixedly connected to a support frame (2), the support frame (2) is rotatably connected to a drive shaft (3), the bottom of the drive shaft (3) is provided with a processing component (4) for processing a spiral groove on a workpiece cavity, the top of the box body (1) is rotatably connected to a sleeve (5), the sleeve (5) is sleeved on the drive shaft (3), and one side of the sleeve (5) is provided with a control component (6) mounted on the support frame (2); The control assembly (6) comprises a second fixed plate (61) fixedly mounted on the support frame (2), first slide bars (62) fixedly connected to both sides of the surface of the second fixed plate (61), a trapezoidal block (63) slidably connected to the first slide bar (62), a cross bar (64) fixedly connected between the two trapezoidal blocks (63), a movable plate (66) fixedly connected to the bottom end of the cross bar (64), a working motor (67) fixedly mounted on the movable plate (66), an output end of the working motor (67) fixedly connected to a mounting shaft (68), and a gear set arranged on the mounting shaft (68).

2. The device for machining spiral grooves in a cavity according to claim 1, characterized in that: The gear set comprises a second gear (69), a third gear (610), and a fourth gear (611); the diameters of the second gear (69), the third gear (610), and the fourth gear (611) are the same, and the number of teeth of the second gear (69), the third gear (610), and the fourth gear (611) decreases in sequence.

3. The device for machining spiral grooves in a cavity according to claim 2, characterized in that: A slide frame (612) is slidably connected to the second fixed plate (61), and a row of rotating shafts (613) are rotatably connected to one side of the slide frame (612) in the vertical direction. Long rods (614) and short rods (615) are fixedly connected to the outer walls of the rotating shafts (613), and the positions of the long rods (614) and the cross rods (64) correspond to each other. A tension spring (616) is provided between the short rods (615) and the slide frame (612).

4. The device for machining a spiral groove in a cavity according to claim 3, characterized in that: A control motor (617) is fixedly mounted on one side of the second fixed plate (61); an output end of the control motor (617) is fixedly connected to a rotating rod (618); the other end of the rotating rod (618) is rotatably connected to a connecting rod (619); the other end of the connecting rod (619) is rotatably connected to the sliding frame (612).

5. The device for machining spiral grooves in a cavity according to claim 4, characterized in that: The second fixed plate (61) is fixedly connected to second support plates (620) on both sides; a row of moving rods (621) is slidably connected to the second support plate (620); one end of the moving rod (621) is fixedly connected to a triangular block (622) adapted to the trapezoidal block (63); the other end of the moving rod (621) is fixedly connected to a limiting block (624); and a second damping spring (623) sleeved on the moving rod (621) is provided between the triangular block (622) and the second support plate (620).

6. The device for machining a spiral groove in a cavity according to claim 5, characterized in that: A driving motor (31) is fixedly mounted on the top of the support frame (2); a sleeve rod (32) is fixedly connected to the output end of the driving motor (31); a spline rod (33) is fixedly mounted on the top of the driving shaft (3); the spline rod (33) and the sleeve rod (32) are slidably matched in the vertical direction; and a spiral groove (34) is provided on the outer wall of the driving shaft (3).

7. The device for machining a spiral groove in a cavity according to claim 6, characterized in that: The processing assembly (4) comprises a mounting cylinder (41) fixedly mounted on the bottom of the driving shaft (3); a servo motor (42) is fixedly mounted on the inner wall of the mounting cylinder (41); an output end of the servo motor (42) is fixedly connected to a driving bevel gear (43); a first fixing plate (44) is mounted on the outer wall of the mounting cylinder (41) in a circumferential array; a driven bevel gear (45) meshing with the driving bevel gear (43) is rotatably connected to the first fixing plate (44); and a processing tool (46) is connected to the axis of the driven bevel gear (45) via a shaft.

8. The device for machining a spiral groove in a cavity according to claim 7, characterized in that: A positioning plate (51) fixedly mounted on the box body (1) is provided at one side of the bottom end of the sleeve (5); a circular ring (52) sleeved on the sleeve (5) is fixedly connected to the positioning plate (51); a slider (53) is slidably connected to the outer wall of the circular ring (52); a return spring (54) sleeved on the circular ring (52) is provided at one side of the slider (53); the other end of the return spring (54) is fixedly connected to the positioning plate (51); a first gear (55) is fixedly connected to the top of the slider (53) via a connecting rod; the first gear (55) is rotatably mounted on the first gear (55) on the sleeve (5); a guide rod (56) is fixedly connected to the inner wall of the sleeve (5); the other end of the guide rod (56) is slidably mounted in the spiral groove (34).

9. The device for machining a spiral groove in a cavity according to claim 8, characterized in that: A first cylinder (71) is fixedly mounted in the inner cavity of the box body (1); a first support plate (7) is fixedly mounted on the output end of the first cylinder (71); second cylinders (72) are fixedly mounted on both sides of the top of the first support plate (7); and a clamping plate (73) is fixedly mounted on the output end of the second cylinder (72).

10. A method for machining a spiral groove in a cavity according to any one of claims 1 to 9, characterized in that: The specific steps include: Step 1: The workpiece is clamped by the second cylinder (72), and the first cylinder (71) moves the first support plate (7) to adjust the position of the workpiece and the processing assembly (4) to facilitate spiral groove processing; Step 2: Control the motor (617) to drive the connecting rod (619) to move back and forth, thereby driving the slide frame (612) and other components to move downward intermittently, and the gear set is meshed with the first gear (55) in turn for transmission. At the same time, the working motor (67) drives the mounting shaft (68) and the gear set to rotate synchronously, increasing the amplitude of the driving shaft (3) to rotate and move downward, thereby increasing the length of the spiral groove; Step 3: The driving motor (31) drives the sleeve rod (32) and the spline rod (33) to rotate synchronously, thereby driving the processing assembly (4) to rotate. When the gear set is meshed with the first gear (55), it drives the sleeve (5) and the guide rod (56) to rotate synchronously and compress the reset spring (54), so that the driving shaft (3) moves downward synchronously during rotation, and the processing tool (46) processes the spiral groove on the workpiece cavity. When the gear set is not meshed with the first gear (55), the assembly is reset, and the servo motor (42) drives the active bevel gear (43) to rotate, thereby driving the driven bevel gear (45) and the processing tool (46) to rotate synchronously, completing the spiral groove processing.

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