Ultrasonic-assisted micromachining device

Abstract

The ultrasonic-assisted micromachining device comprises a base and a protection assembly, the bottom of an inner cavity of the base is fixedly connected with a carrying plate, the lower surface of the carrying plate is movably connected with an adjusting lead screw through a bearing, and an adjusting plate in threaded connection with the adjusting lead screw is fixedly connected with a clamping plate; one end of the upper surface of the base is movably connected with a longitudinal screw rod through a bearing, the other end of the upper surface of the base is fixedly connected with a guide rod, one end of a transverse plate is in threaded connection with the longitudinal screw rod, the protection assembly is composed of a main protection plate and an auxiliary protection plate, and the upper surface of the main protection plate is fixedly connected with the lower surface of a fixing plate; and the auxiliary protection plate is fixedly connected to the outer side surface of the main protection plate. Through the cooperation of the transverse plate, the vertical plate, the fixing plate and the protection assembly, when the ultrasonic assembly carries out micropore machining on the surface of a workpiece, overflowing and splashing free abrasives can be effectively shielded, the waste rate of the free abrasives can be reduced, and the safety of surrounding parts can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of micropore processing, and particularly relates to an ultrasonic auxiliary micro-machining device. BACKGROUND

[0002] Ultrasonic machining is a method for processing materials by using ultrasonic vibration tools to generate impact, throwing and hydraulic impact of abrasives in a liquid medium; high-precision processing of micropores (diameter less than 10mm) is a research problem of common concern in the field of aerospace; the micropores processed by traditional methods such as extrusion usually have a horn at the bottom end caused by plastic deformation of the material, and the elastic deformation part existing in the plastic deformation process is easy to rebound, and the extrusion head is also difficult to reset, resulting in inconsistent sizes of the upper and lower ends of the micropore and poor precision, so that the processed micropore is difficult to meet the high-precision forming requirements; the method of using micro tools for processing is prone to tool breakage due to the small size of the tool, resulting in an increase in processing cost.

[0003] After searching, an ultrasonic micropore machining device (publication number: CN213411376U) is disclosed in the prior art, which is recorded in the document as "including a main shaft, an ultrasonic generating source, a transducer, an amplitude changer and a machining rod, the main shaft is in transmission connection with the transducer, the input end of the transducer is connected with the ultrasonic generating source, the output end of the transducer is connected with the amplitude changer, and the amplitude changer is connected with the machining rod." In the process of micropore machining, the device can timely strengthen the machining wall surface through ultrasonic action, inhibit the rebound deformation after micropore machining, ensure the hole diameter size and the hole wall strength, improve the micropore machining precision, and be beneficial to keeping the size consistency of the upper and lower parts of the hole wall, thereby solving the horn problem of the traditional extrusion machining micropore, but the device lacks a corresponding protective shielding structure in actual use, so that the free abrasives are easy to overflow and splash around in the machining process, and the overflow and splash of the free abrasives not only causes waste, but also causes abrasion to the surrounding parts. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects existing in the prior art, an ultrasonic auxiliary micro-machining device is provided to solve the problems in the background art.

[0005] In order to achieve the above object, the application provides an ultrasonic auxiliary micro machining device, which comprises a base and a protection assembly, the inner cavity bottom of the base is fixedly connected with a carrier plate, the lower surface of the carrier plate is movably connected with an adjusting screw through a bearing, the adjusting screw is screwed with an adjusting plate which is fixedly connected with a clamping plate, one end of the upper surface of the base is movably connected with a vertical screw through a bearing, the other end of the upper surface of the base is fixedly connected with a guide rod, one end of a horizontal plate is screwed with the vertical screw, the other end of the horizontal plate is slidably connected with the guide rod through a guide hole, the lower surface of the horizontal plate is movably connected with a horizontal screw through a bearing, the horizontal screw is screwed with a moving plate which is slidably connected in a moving groove of the horizontal plate, the upper surface of the moving plate is fixedly connected with a vertical plate, the upper surface of the vertical plate is fixedly connected with a servo motor, a lifting groove is formed in the surface of the vertical plate, a vertical screw is movably connected in the lifting groove through a bearing, a moving block is slidably connected in the lifting groove through the screwed vertical screw, the surface of the moving block is fixedly connected with an ultrasonic assembly, one side of the shell of the ultrasonic assembly is fixedly connected with a liquid injection pipe, the other side of the shell of the ultrasonic assembly is slidably connected with the protection assembly through a fixed plate, the protection assembly is composed of a main protection plate and a secondary protection plate, the upper surface of the main protection plate is fixedly connected with the lower surface of the fixed plate, and the secondary protection plate is fixedly connected with the outer side surface of the main protection plate.

[0006] Preferably, the main protection plate in the protection assembly has a circular structure, the axial section of the main protection plate has an L-shaped structure, the through hole formed in the upper surface of the main protection plate has a rectangular structure, and the machining rod of the ultrasonic assembly and the liquid injection pipe are located directly above the through hole.

[0007] Preferably, the lower surface of the main protection plate is circumferentially surrounded by a plurality of groups of main liquid discharge ports which are equally spaced, the cross section of the main liquid discharge port has a right trapezoidal structure, and the axial length of the main protection plate is greater than the axial length of the secondary protection plate.

[0008] Preferably, the secondary protection plate has a whole circular ring structure, the axial section of the secondary protection plate has an L-shaped structure, a plurality of groups of secondary liquid discharge ports are equally spaced and circumferentially formed in the lower surface of the secondary protection plate, the secondary liquid discharge port has a square structure, and the adjacent main liquid discharge port and secondary liquid discharge port are distributed in a staggered manner.

[0009] Preferably, the fixed plate has a rectangular structure, the lower end of the fixed plate is symmetrically connected with two groups of reinforcing blocks, the two groups of reinforcing blocks have right triangular prism structures, the upper end of the fixed plate is fixedly connected with a main sliding block, the upper surface of the main sliding block has a swallowtail-shaped structure, and the outer side surface of the shell of the ultrasonic assembly corresponds to a main sliding groove formed in the main sliding block.

[0010] Preferably, the horizontal plate has a rectangular structure, the moving groove formed in the horizontal plate has a strip-shaped structure, and the end surface of the moving plate slidably connected in the moving groove has a convex-shaped structure, and the size of the convex part of the moving plate and the inner cavity of the moving groove is matched.

[0011] Preferably, the carrier plate is square in structure, four groups of through grooves are symmetrically formed on the upper surface of the carrier plate, the four groups of through grooves are rectangular in structure, and the two groups of adjusting plates screwed at the two ends of the adjusting screw rod are both V-shaped in structure, and the bending portions at the two ends of the adjusting plate are fixedly connected with the clamping plates through the corresponding through grooves, and the clamping plates are rectangular in structure.

[0012] Compared with the prior art, the ultrasonic device has the advantages that: through the cooperation of the fixed plate and the protection assembly, the protection assembly can abut against the periphery of the to-be-processed part of the workpiece in advance when the ultrasonic assembly processes the micro-holes of the workpiece, thereby effectively shielding the flying free abrasive in the micro-hole processing process, reducing the waste rate of the free abrasive, avoiding the abrasion of the surrounding components, and enhancing the stability and safety of the device during use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of the embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of the embodiment of the utility model.

[0015] Figure 3 It is a front view schematic diagram of the protection assembly part of the embodiment of the utility model.

[0016] Figure 4 It is a top view schematic diagram of the protection assembly part of the embodiment of the utility model.

[0017] Figure 5 It is a schematic diagram of the connecting structure of the horizontal plate and the vertical plate of the embodiment of the utility model.

[0018] In the drawing: 1, base; 2, adjusting screw rod; 3, adjusting plate; 4, carrier plate; 5, clamping plate; 6, protection assembly; 7, horizontal screw rod; 8, vertical screw rod; 9, horizontal plate; 10, moving plate; 11, fixed plate; 12, vertical plate; 13, vertical screw rod; 14, ultrasonic assembly; 15, liquid injection pipe; 16, moving block; 17, servo motor; 18, guide rod; 19, main protection plate; 20, auxiliary protection plate. DETAILED DESCRIPTION

[0019] REFERENCE Figures 1 to 5As shown, this utility model provides an ultrasonic-assisted micromachining device, including: a base 1 and a protective assembly 6. A carrying plate 4 is fixedly connected to the bottom of the inner cavity of the base 1. An adjusting screw 2 is movably connected to the lower surface of the carrying plate 4 via a bearing. An adjusting plate 3, screwed to the adjusting screw 2, is fixedly connected to a clamping plate 5. One end of the upper surface of the base 1 is movably connected to a longitudinal screw 8 via a bearing, and the other end of the upper surface of the base 1 is fixedly connected to a guide rod 18. One end of a horizontal plate 9 is screwed to the longitudinal screw 8, and the other end of the horizontal plate 9 is slidably connected to the guide rod 18 via a guide hole. Simultaneously, a horizontal screw 7 is movably connected to the lower surface of the horizontal plate 9 via a bearing. A movable plate 10, screwed to the horizontal screw 7, is slidably connected within a movable groove opened in the horizontal plate 9. A vertical plate 12 is fixedly connected to the upper surface of the 0, and a servo motor 17 is fixedly connected to the upper surface of the vertical plate 12. A lifting groove is opened on the surface of the vertical plate 12. A vertical screw 13 is movably connected to the lifting groove through a bearing. A moving block 16 is slidably connected to the lifting groove through the screwed vertical screw 13. An ultrasonic component 14 is fixedly connected to the surface of the moving block 16. A spray pipe 15 is fixedly connected to one side of the housing of the ultrasonic component 14. A protective component 6 is slidably connected to the other side of the housing of the ultrasonic component 14 through a fixing plate 11. The protective component 6 consists of a main protective plate 19 and a secondary protective plate 20. The lower surface of the fixing plate 11 is fixedly connected to the upper surface of the main protective plate 19, and the secondary protective plate 20 is fixedly connected to the outer side of the main protective plate 19.

[0020] In this embodiment, the workpiece to be processed is placed on the surface of the carrier plate 4. Rotating the adjusting screw 2 causes the adjusting screw 2 to push the two sets of clamping plates 5 to move relative to each other via the screwed adjusting plate 3, allowing the two sets of clamping plates 5 to clamp and fix the workpiece. Rotating the longitudinal screw 8 causes the longitudinal screw 8 to push the ultrasonic component 14 to move longitudinally via the screwed transverse plate 9. Rotating the transverse screw 7 causes the transverse screw 7 to push the ultrasonic component 14 to move laterally via the screwed moving plate 10, thereby achieving the positioning of the ultrasonic component 14 for workpiece processing. Then, the servo motor 17 is switched on. The servo motor 17 drives the vertical screw 13 to rotate via the coupling. The vertical screw 13 pushes the ultrasonic component 14 to move synchronously downwards via the screwed moving block 16. The lower surface of the protective component 6 will first abut against the surface of the workpiece. As the ultrasonic component 14 subsequently moves... When the ultrasonic component 14 moves, the protective component 6 and the fixed plate 11 will move relative to each other. The lower end of the processing rod and the spray pipe 15 connected to the lower surface of the ultrasonic component 14 through the amplitude transformer can pass through the through-hole opened in the protective component 6. The lower end of the processing rod can be close to the workpiece to be processed. Then, the solenoid valves corresponding to the ultrasonic component 14 and the spray pipe 15 are activated respectively, so that the spray pipe 15 can spray free abrasive on the workpiece to be micro-hole processed. The amplitude transformer of the ultrasonic component 14 can drive the processing rod to vibrate at high frequency. Then, the processing rod can cooperate with the free abrasive to realize the micro-hole processing of the workpiece. The protective component 6, which is in contact with the workpiece to be processed, can block the free abrasive from splashing everywhere, which can reduce the waste rate of free abrasive and ensure the safety of the surrounding component structure.

[0021] In a preferred embodiment, the main protective plate 19 in the protective assembly 6 has a circular structure, and the axial section of the main protective plate 19 has a U-shaped structure. The through-hole on the upper surface of the main protective plate 19 has a rectangular structure, and the processing rod and the spray pipe 15 of the ultrasonic component 14 are located directly above the through-hole.

[0022] In this embodiment, as Figure 2 , Figure 3 and Figure 4 The opening of the through-hole allows the processing rod at the lower end of the ultrasonic component 14 and the lower end of the spray pipe 15 to move smoothly down and approach the workpiece surface when the protective component 6 and the ultrasonic component 14 move relative to each other, which facilitates subsequent micro-hole processing.

[0023] In a preferred embodiment, multiple sets of main drain ports are opened at equal intervals around the lower surface of the main protective plate 19, and the cross-section of the main drain ports is a right-angled trapezoidal structure, and the axial length of the main protective plate 19 is greater than the axial length of the secondary protective plate 20.

[0024] In this embodiment, as Figure 2 , Figure 3 and Figure 4The main drain port on the lower surface of the main protective plate 19 can not only intercept the splashing free abrasive, but also ensure that the free abrasive accumulated on the surface of the workpiece can flow out smoothly, thereby ensuring the micro-hole processing effect of the ultrasonic component 14.

[0025] As a preferred embodiment, the secondary protective plate 20 has an overall annular structure, while the axial section of the secondary protective plate 20 has an L-shaped structure. Multiple sets of secondary drain ports are opened at equal intervals around the lower surface of the secondary protective plate 20. The secondary drain ports have a square structure, and the adjacent main drain ports and secondary drain ports are staggered.

[0026] In this embodiment, as Figure 2 , Figure 3 and Figure 4 The secondary protective plate 20 can further intercept the scattered free abrasive, thereby greatly reducing the waste rate of free abrasive, effectively protecting the surrounding component structure, and without affecting the normal discharge of free abrasive.

[0027] As a preferred embodiment, the fixing plate 11 has a rectangular structure, and two sets of reinforcing blocks are symmetrically connected to the lower end of the fixing plate 11. Both sets of reinforcing blocks have a right-angled triangular prism structure, and the main slider is fixedly connected to the upper end of the fixing plate 11. The upper surface of the main slider has a dovetail structure, and the main slide groove is opened on the outer side of the ultrasonic component 14 housing relative to the position of the main slider.

[0028] In this embodiment, as Figure 2 , Figure 3 and Figure 4 The reinforcement block effectively enhances the stability of the connection between the fixed plate 11 and the main protective plate 19, ensuring that the fixed plate 11 and the main protective plate 19 are always in a vertical state. The matching size of the main slider and the main slide groove enhances the stability of the sliding connection between the fixed plate 11 and the protective component 6.

[0029] In a preferred embodiment, the horizontal plate 9 has a rectangular structure, the movable groove inside the horizontal plate 9 has a long strip structure, and the end face of the movable plate 10 slidably connected inside the movable groove has a convex shape structure. At the same time, the size of the protrusion of the movable plate 10 and the inner cavity of the movable groove are matched.

[0030] In this embodiment, as Figure 2 , Figure 3 and Figure 4 The dimensions of the protrusion of the movable plate 10 and the movable groove are matched, which can help enhance the stability of the movable plate 10 when it moves. The lower surface of the vertical plate 12 is slidably connected to the upper surface of the horizontal plate 9, so that the vertical plate 12 can enhance its own stability when it moves with the cooperation of the movable plate 10.

[0031] In a preferred embodiment, the carrier plate 4 has a square structure, and four sets of through slots are symmetrically opened on the upper surface of the carrier plate 4. All four sets of through slots have a rectangular structure, and the two sets of adjusting plates 3 screwed to both ends of the adjusting screw 2 have a U-shaped structure. The bent parts at both ends of the adjusting plates 3 pass through the corresponding through slots and are fixedly connected to the clamping plates 5. At the same time, the clamping plates 5 have a rectangular structure.

[0032] In this embodiment, as Figure 1 and Figure 2 Figure 5 Figure 1 Figure 2 The structural positioning of the carrier plate 4, the adjusting plate 3, and the adjusting screw 2 can effectively reduce the probability of free abrasive adhering to the adjusting screw 2, thereby helping to reduce the probability of failure of the carrier plate 4 clamping assembly.

[0033] The ultrasonic-assisted micromachining device of this utility model, through the cooperation of the horizontal plate 9, the vertical plate 12, the fixed plate 11 and the protective component 6, enables the ultrasonic component 14 to effectively shield the free abrasive material that is splashed everywhere when performing micro-hole machining on the surface of the workpiece. This not only reduces the waste rate of free abrasive material, but also ensures the safety of surrounding components. At the same time, the corresponding ultrasonic components inside the ultrasonic component 14 are all common brand models on the market.

Claims

1. An ultrasonic-assisted micromachining device, comprising: The base (1) and protective assembly (6) are characterized in that: a carrying plate (4) is fixedly connected to the bottom of the inner cavity of the base (1), an adjusting screw (2) is movably connected to the lower surface of the carrying plate (4) through a bearing, and an adjusting plate (3) screwed to the adjusting screw (2) is fixedly connected to a clamping plate (5), and one end of the upper surface of the base (1) is movably connected to a longitudinal screw (8) through a bearing, and the other end of the upper surface of the base (1) is fixedly connected to a guide rod (18), and one end of the horizontal plate (9) is screwed to the longitudinal screw (8), and the other end of the horizontal plate (9) is slidably connected to the guide rod (18) through a guide hole, while the lower surface of the horizontal plate (9) is movably connected to a horizontal screw (7) through a bearing, and a moving plate (10) screwed to the horizontal screw (7) is slidably connected in the moving groove opened in the horizontal plate (9), and the upper surface of the moving plate (10) is fixedly connected to a vertical rod. A servo motor (17) is fixedly connected to the upper surface of the plate (12), and a lifting groove is opened on the surface of the plate (12). A vertical screw (13) is movably connected in the lifting groove through a bearing. A moving block (16) is slidably connected in the lifting groove through the screwed vertical screw (13). An ultrasonic component (14) is fixedly connected to the surface of the moving block (16). A spray pipe (15) is fixedly connected to one side of the housing of the ultrasonic component (14). A protective component (6) is slidably connected to the other side of the housing of the ultrasonic component (14) through a fixed plate (11). The protective component (6) consists of a main protective plate (19) and a secondary protective plate (20). The upper surface of the main protective plate (19) is fixedly connected to the lower surface of the fixed plate (11), while the secondary protective plate (20) is fixedly connected to the outer side of the main protective plate (19).

2. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The main protective plate (19) in the protective assembly (6) has a circular structure, and the axial section of the main protective plate (19) has a U-shaped structure. The through-hole on the upper surface of the main protective plate (19) has a rectangular structure, and the processing rod and the spray pipe (15) of the ultrasonic component (14) are located directly above the through-hole.

3. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The lower surface of the main protective plate (19) has multiple sets of main drain ports at equal intervals around the circumference, and the cross-section of the main drain ports is a right trapezoidal structure, and the axial length of the main protective plate (19) is greater than the axial length of the secondary protective plate (20).

4. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The secondary protective plate (20) has an overall circular structure, and the axial section of the secondary protective plate (20) has an L-shaped structure. Multiple sets of secondary drain ports are opened at equal intervals around the lower surface of the secondary protective plate (20). The secondary drain ports have a square structure, and the adjacent main drain ports and secondary drain ports are staggered.

5. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The fixing plate (11) has a rectangular structure. Two sets of reinforcing blocks are symmetrically connected at the lower end of the fixing plate (11). Both sets of reinforcing blocks have a right-angled triangular prism structure. The upper end of the fixing plate (11) is fixedly connected to the main slider. The upper surface of the main slider has a dovetail structure. At the same time, the main slide groove is opened on the outer side of the ultrasonic component (14) relative to the position of the main slider.

6. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The horizontal plate (9) has a rectangular structure, and the moving groove opened in the horizontal plate (9) has a long strip structure. The end face of the moving plate (10) slidably connected in the moving groove has a convex shape structure. At the same time, the size of the protrusion of the moving plate (10) and the inner cavity of the moving groove are matched.

7. The ultrasonic-assisted micromachining device according to claim 1, characterized in that, The carrier plate (4) has a square structure. Four sets of through slots are symmetrically opened on the upper surface of the carrier plate (4). All four sets of through slots have a rectangular structure. The two sets of adjustment plates (3) screwed to both ends of the adjustment screw (2) have a U-shaped structure. The bent parts at both ends of the adjustment plate (3) pass through the corresponding through slots and are fixedly connected to the clamping plate (5). At the same time, the clamping plate (5) has a rectangular structure.

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