Positioning fixture for drilling thin-walled cylinder
By designing a positioning fixture for thin-walled cylinder members, the thin-walled cylinder members are used to form a closed cavity using arc-shaped support sheets and sealing tightening components, and injecting medium to increase internal pressure, the thin-walled cylinder members are solved due to support during drilling. The deformation problems caused by poor performance enable higher quality and accuracy drilling.
Patent Information
- Application Number
- CN202420817977.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-18
AI Technical Summary
During the drilling process of thin-walled cylinder members, due to their poor support, they are prone to overall or partial deformation due to the extrusion of the drill bit, and the prior art is difficult to effectively prevent the collision between the drill bit and the support, affecting the drilling quality.
A positioning fixture for drilling of thin-walled cylinder members is designed to wrap and support the cylinder members through arc-shaped support sheets, combine horizontal moving parts and sealing tightening parts to form a sealed cavity, and inject medium into the external charging device to Increase internal pressure to achieve uniform support for the cylinder.
It effectively prevents the cylinder member from deforming due to drill bit extrusion, improves the quality and accuracy of the drill holes, avoids local support deformation and drill bit damage, and improves the stability and reliability of the fixture.
Smart Images
Figure CN222430033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drilling fixtures, in particular to a positioning fixture for drilling holes in thin-walled cylinders. Background Art
[0002] The drilling process usually uses a drill to cut circular holes in the workpiece for the installation of bolts, screws or other fasteners. The main steps of the drilling process include selecting the appropriate drill type and size, determining the drilling position, fixing the workpiece, setting the drill speed and feed speed, performing the drilling operation, cleaning the hole, etc. The drilling process can be applied to a variety of materials, including metal, plastic, wood, etc. Different materials require different types of drill bits. For example, metal requires carbide drill bits, while plastic and wood can use ordinary drill bits. The drilling process is widely used in manufacturing, construction, furniture manufacturing and other fields. It is a common and important processing technology.
[0003] In the process of drilling holes in thin-walled cylinders, due to their poor support, the cylinders are often squeezed by the drill bit to cause overall deformation or local deformation of the cylinders, which in turn causes damage to the cylinders during the drilling process. Most of the existing solutions provide support inside the drilling position of the cylinder. Even if local support is provided, it is easy to cause deformation of the cylinder wall at the support position.
[0004] At the same time, the drilling process is prone to cause collision between the drill bit and the support; another existing technical solution is to punch the plate constituting the cylinder before processing the cylinder, and then process the plate. When this process is used to process the holes on the cylinder, it often causes the hole position to shift in the subsequent production process of the cylinder, as well as the deformation of the hole, resulting in poor quality of the finished product. Utility Model Content
[0005] The utility model aims to provide a positioning fixture for drilling a thin-walled cylinder to solve the problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a positioning fixture for drilling holes in thin-walled cylinders, comprising a bottom plate; a mounting seat is fixedly connected to the upper part of the bottom plate; an arc-shaped support sheet is symmetrically arranged on the mounting seat; the arc-shaped support sheet is fixedly connected to the mounting seat;
[0007] A horizontal moving component is symmetrically installed on the upper part of the base plate; a sealing and tightening component is installed on the horizontal moving component; the sealing and tightening component is used to seal and fix the end of the thin-walled tubular member to be drilled; the horizontal moving component is used to move the sealing and tightening component; the sealing and tightening component is connected to an external energy-generating device.
[0008] When drilling a thin-walled tube, the thin-walled tube is placed on an arc-shaped support sheet and wrapped with the arc-shaped support sheet to support the thin-walled tube and prevent the entire tube from being deformed by the squeeze of the drill bit, thereby achieving better drilling. At the same time, the horizontal moving component is provided to drive the sealing and tightening component to seal the end of the thin-walled tube to form a closed cavity inside the thin-walled tube. Subsequently, a certain medium (which may be a gas medium, a liquid medium, or a solid medium) is flushed into the closed cavity formed by the thin-walled tube through an external charging device. As the medium is flushed in, the pressure inside the cavity increases to support the thin-walled tube during the drilling process. Since the interior is not only supported locally, local support deformation is not easy to occur. At the same time, since the drill bit penetrates into the interior of the thin-walled tube during the drilling process, it will not cause damage to the drill bit, thereby improving the quality of drilling holes in the thin-walled tube.
[0009] Preferably, the horizontal moving component includes a moving frame, the upper part of the base plate is fixedly connected to the moving frame, and the moving frame is symmetrically provided with slide rails; the slide rails are fixedly connected to the moving frame; the upper part of the slide rails is slidably connected to a slider; the upper part of the slider is fixedly connected to a mounting frame; the moving frame is fixedly connected to an electric push rod; the movable end of the electric push rod is fixedly connected to the mounting frame.
[0010] The slide rails and sliders provided can enable the sealing and tightening components to move smoothly in the horizontal direction. At the same time, the slide rails and sliders can make the sealing and tightening components more stable. This is because the cavity inside the thin-walled cylinder is a relatively high-pressure area during the drilling process. If the sealing and tightening components are not stable enough, it will be difficult to keep the cavity sealed. Therefore, the stability of the clamp and the reliability of use can be improved. At the same time, the electric push rod provided can more stably push the sealing and tightening components to a position in close contact with the thin-walled cylinder, avoiding deformation of the thin-walled cylinder during clamping, thereby improving the accuracy of processing.
[0011] Preferably, the sealing tightening component includes a connecting outer tube; the connecting outer tube is installed on the mounting frame; one end of the connecting outer tube is fixedly connected to a sealing head; the sealing head is hollow inside; a connecting inner tube is arranged inside the connecting outer tube; the connecting inner tube is fixedly connected to the connecting outer tube; one end of the connecting outer tube is connected to the inside of the sealing head; one end of the connecting inner tube extends through the sealing head to a side surface of the sealing head; a reversing assembly is arranged on the connecting outer tube and the connecting inner tube; the reversing assembly is used to switch the external charging device and the connecting outer tube on and off.
[0012] The sealing and tightening component is pushed to the end position of the thin-walled cylinder by a horizontal moving component, and then the medium is rushed into the interior of the connected outer tube by an external energy-injecting device. As the medium is rushed in, the sealing head expands and tightly contacts the interior of the thin-walled cylinder. Since the internal pressure is the same, the thin-walled cylinder will not be deformed due to the sealing and tightening, thereby improving the practicality and reliability of clamping; then, the external energy-injecting device is connected to the connected inner tube by rotating the reversing component, and the medium is transmitted to the cavity inside the thin-walled cylinder through the connected inner tube; as the medium is rushed in, the thin-walled cylinder is supported during the drilling process, so that the drilling of the thin-walled cylinder is smoothly carried out to improve the quality of the drilling; after the drilling is completed, the energy-injecting device is released, and then the medium inside the cavity is discharged, and then the reversing component is rotated so that the medium inside the sealing head is discharged, so that the clamping of the thin-walled cylinder is realized, and the whole process of drilling is completed.
[0013] Preferably, the reversing assembly includes a No. 1 baffle; a No. 1 baffle is provided on the connecting inner tube and the connecting outer tube; the No. 1 baffle is fixedly connected to the connecting inner tube and the connecting outer tube respectively; an adjusting tube is sleeved on the outside of the connecting outer tube; a No. 2 baffle is provided inside the adjusting tube; the No. 2 baffle is fixedly connected to the inside of the adjusting tube; the No. 1 baffle conflicts with the No. 2 baffle.
[0014] The No. 1 baffle blocks more than half of the cross-section of the connecting inner tube and the connecting outer tube, and the blocking areas are respectively located on both sides of the connecting inner tube and the connecting outer tube; and the No. 2 baffle on the adjusting tube blocks the same side of the adjusting inner tube and the adjusting outer tube, so that in the process of rotating the adjusting tube, when it is rotated 180°, the on-off switching between the inner tube and the outer tube can be realized, and then the switching of the use of the sealing head can be realized; since the structure of the reversing component is simple, when in use, when the medium is liquid or solid, it is not easy to be blocked, so that it can adapt to more types of media types, and at the same time, due to the simple structure, it will reduce failures and simplify the maintenance process.
[0015] Preferably, anti-skid protrusions are evenly spaced along the circumferential direction on the inner side of the arc-shaped support sheet; the length direction of the anti-skid protrusions is consistent with the length direction of the arc-shaped support sheet; and the anti-skid protrusions are made of a flexible material.
[0016] By setting up the protective protrusions, the slipping of thin-walled tube parts can be avoided during the drilling and clamping process, thereby improving the accuracy of drilling. The thickness of the anti-slip protrusions does not exceed 1 mm to avoid local support. At the same time, the anti-slip protrusions are evenly arranged on the arc-shaped support plate.
[0017] Preferably, an anti-overflow convex strip is provided at the edge of the mounting seat; the anti-overflow convex strip is fixedly connected to the mounting seat; a through hole is opened in the mounting seat between the arc-shaped support sheets; and a collection box is provided in the through hole.
[0018] By setting an anti-overflow convex strip at the edge of the mounting seat, and then opening a through hole and setting a collection box in the middle of the mounting seat, after the overflowing medium flows onto the mounting seat, it will be blocked by the anti-overflow convex strip, thereby avoiding further overflow of the medium. At the same time, the overflowing medium on the mounting seat can be collected through the set through hole and the collection box, avoiding clutter on the work surface.
[0019] Preferably, a guide groove is provided on the arc-shaped support sheet along the circumferential direction.
[0020] By setting a guide groove on the arc-shaped support plate 3, the medium overflowing during the drilling process can be smoothly guided to the mounting seat to avoid falling outside the mounting seat, thereby improving the recycling rate of the medium and avoiding the situation where the medium causes dirtiness in the working environment, thereby improving the practicality of the clamp.
[0021] Preferably, wire brushes are evenly spaced on the sealing head along the circumferential direction; and the wire brushes are fixedly connected to the sealing head.
[0022] By setting a wire brush on the outside of the sealing head, the burrs on the end of the thin-walled cylinder are polished to eliminate the subsequent influence on the sealing process, thereby improving the stability and reliability of the clamping, so that the clamping can be carried out smoothly.
[0023] Preferably, a covering plate is hingedly connected to the upper portion of the arc-shaped support sheet 3; a clamp is fixedly connected to the covering plate; and a tightening wedge is installed inside the clamp.
[0024] By providing a covering plate on the upper part of the arc-shaped support plate 3, the support of the fixture to the thin-walled cylinder during the drilling process is further improved. By covering and supporting the outside of the thin-walled cylinder within an arc length of more than 180 degrees, the possibility of local outward expansion of the thin-walled cylinder can be restricted, and the overall deformation of the thin-walled cylinder can be effectively prevented, thereby achieving support for the cylinder during the drilling process and improving the quality of drilling.
[0025] Preferably, the mounting bracket is threadedly connected to the communicating outer tube.
[0026] By setting the movable part and the connecting outer tube into a threaded connection, the clamping distance between the sealing heads on both sides can be further adjusted, thereby improving the applicable range of the clamp during use, so that it can be used for drilling and clamping thin-walled cylinders of different lengths.
[0027] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0028] 1. The utility model provides a positioning fixture for drilling holes in thin-walled tube parts, which places the thin-walled tube part on an arc-shaped support sheet and wraps the thin-walled tube part through the arc-shaped support sheet to support the thin-walled tube part. The thin-walled tube part is placed so as to prevent the whole part from being deformed by the squeeze of the drill bit, thereby achieving better drilling. At the same time, a sealing and tightening component is driven by a horizontal moving component to seal the end of the thin-walled tube part, thereby forming a closed cavity inside the thin-walled tube part. Subsequently, a certain medium (which may be a gas medium, a liquid medium, or a solid medium) is rushed into the closed cavity formed by the thin-walled tube part through an external charging device. With the rushing in of the medium, the pressure inside the cavity increases, thereby supporting the thin-walled tube part during the drilling process. Since the inside is not only supported locally, it is not easy to produce local support deformation. At the same time, since the drill bit penetrates into the thin-walled tube part during the drilling process, it will not cause damage to the drill bit, thereby improving the quality of drilling holes in the thin-walled tube part.
[0029] 2. The utility model provides a positioning fixture for drilling holes in thin-walled cylinders. The sealing and tightening components can be made more stable through the slide rails and the sliders. Because the cavity inside the thin-walled cylinder is a relatively high-pressure area during the drilling process, if the sealing and tightening components are not stable enough, it will be difficult to keep the cavity sealed. Therefore, the stability of the fixture and the reliability of use can be improved. At the same time, the electric push rod can be set to more stably push the sealing and tightening components to a position in close contact with the thin-walled cylinder, avoiding deformation of the thin-walled cylinder during the clamping process, thereby improving the accuracy of processing.
[0030] 3. The utility model provides a positioning fixture for drilling holes in thin-walled cylindrical parts, which is provided with an anti-overflow convex strip at the edge of the mounting seat, and then a through hole is opened in the middle of the mounting seat and a collecting box is provided. After the overflowing medium flows onto the mounting seat, it will be blocked by the anti-overflow convex strip, thereby avoiding further overflow of the medium. At the same time, the overflowing medium on the mounting seat can be collected through the provided through hole and the collecting box, avoiding chaos on the work surface.
[0031] 4. The utility model provides a positioning fixture for drilling holes in thin-walled cylinders. The sealing and tightening components are pushed to the end position of the thin-walled cylinders by a horizontal moving component, and then a medium is punched into the interior of the connected outer tube by an external energy-injecting device. As the medium is punched in, the sealing head expands and tightly contacts the interior of the thin-walled cylinder. Since the internal pressure is the same, the thin-walled cylinder will not be deformed due to the sealing and tightening, thereby improving the practicality and reliability of clamping; then, by rotating the reversing component, the external energy-injecting device is connected to the connected inner tube and the medium is transmitted to the cavity inside the thin-walled cylinder through the connected inner tube; as the medium is punched in, the thin-walled cylinder is supported during the drilling process, so that the drilling of the thin-walled cylinder is smoothly carried out to improve the quality of the drilling; after the drilling is completed, the energy-injecting device is released, and then the medium in the cavity is discharged, and then the reversing component is rotated so that the medium inside the sealing head is discharged, so that the clamping of the thin-walled cylinder is realized, and the whole process of drilling is completed. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The present invention will be further described below in conjunction with the accompanying drawings.
[0033] Figure 1 This is a schematic diagram of the first overall structure of the clamp in the utility model;
[0034] Figure 2 This is a second overall structural schematic diagram of the clamp in the utility model;
[0035] Figure 3 It is a schematic diagram of the overall structure of the horizontal moving component in the utility model;
[0036] Figure 4 It is an exploded view of the horizontal moving component in the utility model;
[0037] Figure 5 This is a schematic diagram of the internal structure of the sealing and tightening component in the utility model;
[0038] Figure 6 This is a schematic diagram of the installation structure of the arc-shaped support sheet in the utility model;
[0039] Figure 7 This is a schematic diagram of the first state of the reversing component in the utility model;
[0040] Figure 8 This is a schematic diagram of the second state of the reversing component in the utility model;
[0041] Fig. 9 It is a schematic diagram of the overall structure of the sealing head in the utility model;
[0042] Fig.10 This is a schematic diagram of the structure of the regulating tube in the utility model;
[0043] In the figure: bottom plate 1, mounting seat 2, arc-shaped support plate 3, slide rail 5, slider 6, mobile frame 7, mounting frame 8, electric push rod 9, connecting outer tube 10, connecting inner tube 11, sealing head 12, No. 1 baffle 13, adjusting tube 14, No. 2 baffle 15, anti-slip protrusion 16, anti-overflow convex strip 17, through hole 18, collecting box 19, guide groove 20, wire brush 21, covering plate 22, clamp 23, and tightening wedge 24. DETAILED DESCRIPTION
[0044] The present invention is further described in detail below in conjunction with the embodiments:
[0045] Example 1
[0046] like Figure 1-3 As shown, a positioning fixture for drilling a thin-walled cylindrical part comprises a base plate 1; a mounting seat 2 is fixedly connected to the upper portion of the base plate 1; an arc-shaped support sheet 3 is symmetrically arranged on the mounting seat 2; the arc-shaped support sheet 3 is fixedly connected to the mounting seat 2;
[0047] A horizontal moving component is symmetrically installed on the upper part of the base plate 1; a sealing and tightening component is installed on the horizontal moving component; the sealing and tightening component is used to seal and fix the end of the thin-walled tubular member to be drilled; the horizontal moving component is used to move the sealing and tightening component; the sealing and tightening component is connected to an external energy-generating device.
[0048] In the present scheme, when drilling a thin-walled tube, the thin-walled tube is placed on the arc-shaped support sheet 3 and wrapped by the arc-shaped support sheet 3 to support the thin-walled tube and prevent the whole tube from being deformed by the squeeze of the drill bit, so as to achieve better drilling. At the same time, the horizontal moving component is provided to drive the sealing and tightening component to seal the end of the thin-walled tube to form a closed cavity inside the thin-walled tube. Then, a certain medium (which can be a gas medium, a liquid medium or a solid medium) is flushed into the closed cavity formed by the thin-walled tube through an external charging device. As the medium is flushed in, the pressure inside the cavity increases, so that the thin-walled tube is supported during the drilling process. Since the interior is not only supported locally, it is not easy to produce local support deformation. At the same time, since the drill bit penetrates into the interior of the thin-walled tube during the drilling process, it will not cause damage to the drill bit, thereby improving the quality of drilling holes in the thin-walled tube.
[0049] like Figure 2-4As shown, the horizontal moving component includes a moving frame 7, the upper part of the base plate 1 is fixedly connected to the moving frame 7, and the moving frame 7 is symmetrically provided with slide rails 5; the slide rails 5 are fixedly connected to the moving frame 7; the upper part of the slide rails 5 is slidably connected to a slider 6; the upper part of the slider 6 is fixedly connected to a mounting frame 8; the moving frame 7 is fixedly connected to an electric push rod 9; the movable end of the electric push rod 9 is fixedly connected to the mounting frame 8.
[0050] During operation, during the drilling process, the slide rail 5 and the slider 6 can make the sealing top tightening component move smoothly in the horizontal direction. At the same time, the slide rail 5 and the slider 6 can make the sealing top tightening component more stable. Because during the drilling process, the cavity inside the thin-walled cylinder is a relatively high-pressure area. If the sealing top tightening component is not stable enough, it will be difficult to keep the cavity sealed. Therefore, the stability of the clamp and the reliability of use can be improved. At the same time, the electric push rod 9 can be more stably pushed to a position in close contact with the thin-walled cylinder to avoid deformation of the thin-walled cylinder during clamping, thereby improving the accuracy of processing.
[0051] Example 2
[0052] like Figure 5 and Figure 6 As shown, on the basis of Example 1, the utility model provides a technical solution, wherein the sealing tightening component includes a connecting outer tube 10; the connecting outer tube 10 is installed on the mounting frame 8; one end of the connecting outer tube 10 is fixedly connected to a sealing head 12; the sealing head 12 is hollow inside; a connecting inner tube 11 is arranged inside the connecting outer tube 10; the connecting inner tube 11 is fixedly connected to the connecting outer tube 10; one end of the connecting outer tube 10 is connected to the inside of the sealing head 12; one end of the connecting inner tube 11 passes through the sealing head 12 and extends to a side of the sealing head 12; a reversing assembly is arranged on the connecting outer tube 10 and the connecting inner tube 11; the reversing assembly is used to switch the external charging device and the connecting outer tube 10 on and off.
[0053] During operation, the sealing and tightening component is pushed to the end position of the thin-walled cylinder by the horizontal moving component, and then the medium is rushed into the interior of the connected outer tube 10 through the external energy-injecting device. As the medium is rushed in, the sealing head 12 expands and tightly contacts the interior of the thin-walled cylinder. Since the internal pressure is the same, the thin-walled cylinder will not be deformed due to the sealing and tightening, thereby improving the practicality and reliability of clamping; then, by rotating the reversing component, the external energy-injecting device is connected to the connected inner tube 11 and the medium is transmitted to the cavity inside the thin-walled cylinder through the connected inner tube 11; as the medium is rushed in, the thin-walled cylinder is supported during the drilling process, so that the drilling of the thin-walled cylinder is smoothly carried out to improve the quality of the drilling; after the drilling is completed, the energy-injecting device is released, and then the medium in the cavity is discharged, and then the reversing component is rotated so that the medium inside the sealing head 12 is discharged, the thin-walled cylinder is clamped, and the whole process of drilling is completed.
[0054] Example 3
[0055] like Figure 7 , Figure 8 and Fig.10 As shown, on the basis of Example 2, the utility model provides a technical solution, wherein the reversing assembly includes a No. 1 baffle 13; a No. 1 baffle 13 is provided on the connecting inner tube 11 and the connecting outer tube 10; the No. 1 baffle 13 is fixedly connected to the connecting inner tube 11 and the connecting outer tube 10 respectively; an adjusting tube 14 is sleeved on the outside of the connecting outer tube 10; a No. 2 baffle 15 is provided inside the adjusting tube 14; the No. 2 baffle 15 is fixedly connected to the inside of the adjusting tube 14; the No. 1 baffle 13 and the No. 2 baffle 15 are in conflict with each other.
[0056] The No. 1 baffle 13 blocks more than half of the cross-section of the connecting inner tube 11 and the connecting outer tube 10, and the blocking areas are respectively located on both sides of the connecting inner tube 11 and the connecting outer tube 10; and the No. 2 baffle 15 on the adjusting tube 14 blocks the same side of the adjusting inner tube and the adjusting outer tube, so that in the process of rotating the adjusting tube, when it rotates 180°, the on-off switching between the inner tube and the outer tube can be realized, and then the switching of the use of the sealing head 12 can be realized; since the structure of the reversing component is simple, when in use, when the medium is liquid or solid, it is not easy to be blocked, so that it can adapt to more types of media types, and at the same time, due to the simple structure, it will reduce failures and simplify the maintenance process.
[0057] like Figure 6 As shown, the inner side of the arc-shaped support piece 3 is provided with anti-skid protrusions 16 at even intervals along the circumferential direction; the length direction of the anti-skid protrusions 16 is consistent with the length direction of the arc-shaped support piece 3; the anti-skid protrusions 16 are made of flexible material.
[0058] By setting up the protective protrusions, the slipping of thin-walled tube parts can be avoided during the drilling and clamping process, thereby improving the accuracy of drilling. The thickness of the anti-slip protrusions 16 does not exceed 1 mm to avoid local support. At the same time, the anti-slip protrusions 16 are evenly arranged on the arc-shaped support plate 3.
[0059] like Figure 6 As shown, an anti-overflow rib 17 is provided at the edge of the mounting seat 2; the anti-overflow rib 17 is fixedly connected to the mounting seat 2; a through hole 18 is provided on the mounting seat 2 between the arc-shaped support pieces 3; a collection box 19 is provided in the through hole 18.
[0060] When the drilling is completed, the pressure inside the thin-walled cylinder will cause the medium inside the cavity to overflow. If it is not handled, it will cause chaos on the work surface. Therefore, in this solution, an anti-overflow ridge 17 is set at the edge of the mounting seat 2, and then a through hole 18 is opened in the middle of the mounting seat 2 and a collecting box 19 is set. After the overflowed medium flows onto the mounting seat 2, it will be blocked by the anti-overflow ridge 17, thereby avoiding further overflow of the medium. At the same time, the overflowed medium on the mounting seat 2 can be collected through the set through hole 18 and the collecting box 19, avoiding chaos on the work surface.
[0061] On the basis of Example 3, the utility model provides a technical solution, wherein a guide groove 20 is opened on the arc-shaped support sheet 3 along the circumferential direction.
[0062] By setting a guide groove on the arc-shaped support plate 3, the medium overflowing during the drilling process can be smoothly guided to the mounting seat 2 to avoid falling outside the mounting seat 2, thereby improving the recycling rate of the medium and avoiding the situation where the medium causes dirtiness in the working environment, thereby improving the practicality of the clamp.
[0063] The sealing head 12 is provided with steel wire brushes 21 at even intervals along the circumferential direction; the steel wire brushes 21 are fixedly connected to the sealing head 12 .
[0064] Since there may be burrs on the end of the thin-walled cylinder, there is a risk of damaging the sealing head 12 during the subsequent sealing and tightening process. Therefore, in this solution, a circle of wire brush 21 is set on the outside of the sealing head 12 to grind the burrs on the end of the thin-walled cylinder to eliminate its subsequent impact on the sealing process, thereby improving the stability and reliability of clamping so that clamping can be carried out smoothly.
[0065] like Figure 6As shown, a covering plate 22 is hingedly connected to the upper part of the arc-shaped support plate 3 ; a clamp 23 is fixedly connected to the covering plate 22 ; and a tightening wedge 24 is installed inside the clamp 23 .
[0066] During operation, a covering plate 22 is provided on the upper part of the arc-shaped support sheet 3 to further improve the support of the fixture to the thin-walled cylinder during the drilling process. By covering and supporting the thin-walled cylinder within an arc length of more than 180 degrees on the outside of the thin-walled cylinder, the possibility of local outward expansion of the thin-walled cylinder can be restricted, thereby effectively preventing the overall deformation of the thin-walled cylinder, thereby achieving support for the cylinder during the drilling process and improving the quality of drilling.
[0067] like Figure 2 As shown, the mounting frame is threadedly connected to the communicating outer tube 10 .
[0068] During operation, by setting the movable part and the connecting outer tube 10 into a threaded connection, the clamping distance between the sealing heads 12 on both sides can be further adjusted, thereby improving the applicable range of the clamp during use, so that it can be used for drilling and clamping thin-walled cylinders of different lengths.
[0069] like Figure 1-10As shown, when drilling a thin-walled tube, the thin-walled tube is placed on an arc-shaped support sheet and wrapped by the arc-shaped support sheet to support the thin-walled tube, thereby preventing the entire tube from being squeezed by the drill bit and causing overall deformation, thereby achieving better drilling. At the same time, the horizontal moving component is provided to drive the sealing and tightening component to seal the end of the thin-walled tube, thereby forming a closed cavity inside the thin-walled tube. Subsequently, a certain medium (which may be a gas medium, a liquid medium, or a solid medium) is flushed into the closed cavity formed by the thin-walled tube through an external charging device. As the medium is flushed in, the pressure inside the cavity increases, thereby supporting the thin-walled tube during the drilling process. Since the interior is not supported only locally, local support deformation is not easy to occur. At the same time, since the drill bit penetrates into the interior of the thin-walled tube during the drilling process, it will not cause damage to the drill bit, thereby improving the quality of drilling holes in the thin-walled tube. The sealing and tightening component is pushed to the end position of the thin-walled cylinder by the horizontal moving component, and then the medium is rushed into the interior of the connected outer tube 10 through the external energy-injecting device. As the medium is rushed in, the sealing head 12 expands and tightly contacts the interior of the thin-walled cylinder. Since the internal pressure is the same, the thin-walled cylinder will not be deformed due to the sealing and tightening, thereby improving the practicality and reliability of clamping; then, by rotating the reversing component, the external energy-injecting device is connected to the connected inner tube 11 and the medium is transmitted to the cavity inside the thin-walled cylinder through the connected inner tube 11; as the medium is rushed in, the thin-walled cylinder is supported during the drilling process, so that the drilling of the thin-walled cylinder is smoothly carried out to improve the quality of the drilling; after the drilling is completed, the energy-injecting device is released, and then the medium in the cavity is discharged, and then the reversing component is rotated so that the medium inside the sealing head 12 is discharged, the thin-walled cylinder is clamped, and the whole process of drilling is completed.
[0070] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A positioning fixture for drilling a thin-walled cylindrical part, comprising a base plate (1); characterized in that: The upper part of the bottom plate (1) is fixedly connected to a mounting seat (2); an arc-shaped support sheet (3) is symmetrically arranged on the mounting seat (2); the arc-shaped support sheet (3) is fixedly connected to the mounting seat (2); A horizontal moving component is symmetrically mounted on the upper part of the bottom plate (1); a sealing and tightening component is mounted on the horizontal moving component; the sealing and tightening component is used to seal and fix the end of the thin-walled tube to be drilled; the horizontal moving component is used to move the sealing and tightening component; the sealing and tightening component is connected to an external energy-generating device.
2. A positioning fixture for drilling a thin-walled cylindrical part according to claim 1, characterized in that: The horizontal moving component comprises a moving frame (7), the upper part of the base plate (1) is fixedly connected to the moving frame (7), and the moving frame (7) is symmetrically provided with slide rails (5); the slide rails (5) are fixedly connected to the moving frame (7); the upper part of the slide rails (5) is slidably connected to a slider (6); the upper part of the slider (6) is fixedly connected to a mounting frame (8); the moving frame (7) is fixedly connected to an electric push rod (9); and the movable end of the electric push rod (9) is fixedly connected to the mounting frame (8).
3. A positioning fixture for drilling a thin-walled cylinder according to claim 2, characterized in that: The sealing and tightening component comprises a connecting outer tube (10); the connecting outer tube (10) is mounted on the mounting frame (8); one end of the connecting outer tube (10) is fixedly connected to a sealing head (12); the sealing head (12) is hollow inside; a connecting inner tube (11) is arranged inside the connecting outer tube (10); the connecting inner tube (11) is fixedly connected to the connecting outer tube (10); one end of the connecting outer tube (10) is connected to the inside of the sealing head (12); one end of the connecting inner tube (11) passes through the sealing head (12) and extends to a side surface of the sealing head (12); a reversing assembly is arranged on the connecting outer tube (10) and the connecting inner tube (11); the reversing assembly is used to switch the external charging device and the connecting outer tube (10) on and off.
4. A positioning fixture for drilling a thin-walled cylinder according to claim 3, characterized in that: The reversing assembly comprises a first baffle (13); the first baffle (13) is provided on the connecting inner tube (11) and the connecting outer tube (10); the first baffle (13) is fixedly connected to the connecting inner tube (11) and the connecting outer tube (10) respectively; an adjusting tube (14) is sleeved on the outside of the connecting outer tube (10); a second baffle (15) is provided inside the adjusting tube (14); the second baffle (15) is fixedly connected to the inside of the adjusting tube (14); and the first baffle (13) and the second baffle (15) are in conflict with each other.
5. A positioning fixture for drilling a thin-walled cylinder according to claim 4, characterized in that: The inner side of the arc-shaped support sheet (3) is provided with anti-skid protrusions (16) at even intervals along the circumferential direction; the length direction of the anti-skid protrusions (16) is consistent with the length direction of the arc-shaped support sheet (3); and the anti-skid protrusions (16) are made of a flexible material.
6. A positioning fixture for drilling a thin-walled cylindrical member according to claim 5, characterized in that: An anti-overflow convex strip (17) is provided at the edge of the mounting seat (2); the anti-overflow convex strip (17) is fixedly connected to the mounting seat (2); a through hole (18) is provided on the mounting seat (2) between the arc-shaped support sheets (3); and a collection box (19) is provided in the through hole (18).
7. A positioning fixture for drilling a thin-walled cylindrical member according to claim 6, characterized in that: The arc-shaped support sheet (3) is provided with a guide groove (20) along the circumferential direction.
8. A positioning fixture for drilling a thin-walled cylindrical member according to claim 7, characterized in that: Steel wire brushes (21) are evenly spaced apart on the sealing head (12) along the circumferential direction; the steel wire brushes (21) are fixedly connected to the sealing head (12).
9. A positioning fixture for drilling a thin-walled cylindrical member according to claim 8, characterized in that: A covering plate (22) is hingedly connected to the upper part of the arc-shaped support plate (3); a clamp (23) is fixedly connected to the covering plate (22); and a tightening wedge (24) is installed inside the clamp (23).
10. A positioning fixture for drilling a thin-walled cylindrical member according to claim 9, characterized in that: The mounting frame (8) is threadedly connected to the communicating outer tube (10).
Citation Information
Cited By
Thin-wall cylindrical part machining shape maintaining device and method
CN121514930A