A high-precision reaming tool for a sleeve structure

Abstract

The utility model belongs to the field of finish machining relates to a kind of high-precision reaming tool for sleeve structure. Tool includes: hole collector, gasket, inner drill die;Wherein, hole collector whole is cylindrical structure, its outer diameter is identical with the inner tube inner diameter of sleeve part;When collecting hole, collector is nested in inner tube, hole collector is used to collect inner tube wall hole position and aperture to itself, obtain collection hole, pass to inner drill die with collection hole;Inner drill die is cylindrical structure, inner drill die inner diameter is equal to inner tube outer diameter;Inner drill die is laid with gasket, and gasket thickness is same with inner tube thickness;The inner drill die of adding gasket nests collector, at this time, inner drill die is used to receive the collection hole of hole collector, and drive to itself, obtain inner drill die hole;New inner tube is sleeved with inner drill die, at this time, inner drill die is used to reaming on new inner tube;The ear of split type inner drill die is locked when reaming and drilling.

Description

Technical Field

[0001] This utility model belongs to the field of precision machining and relates to a high-precision return hole tool for sleeve structures. Background Technology

[0002] During the repair of mechanical structures, it is often necessary to transfer a hole on one of the pipe fittings in a sleeve structure to another pipe fitting. When a small-diameter inner pipe hole is transferred to an outer pipe, space limitations may prevent operation (tools cannot be inserted into the small-diameter inner pipe), and the hole position accuracy cannot be guaranteed. Utility Model Content

[0003] Purpose of the utility model: In view of the shortcomings, deficiencies, and numerous limitations of existing technologies, a high-precision back-hole tool for casing structures can solve the aforementioned operational problems, improving and optimizing the product manufacturing process. It satisfies the urgent need for efficient and precise back-hole processes for various casing structures in terms of product quality, production efficiency, and economic cost.

[0004] Technical solution: A high-precision reverse drilling tool for casing structures is provided, comprising: a borehole sampler, a gasket, and an internal drill jig; The borehole sampler is a cylindrical structure, and its outer diameter is consistent with the inner diameter of the inner tube of the casing component. When the collector is drilling, an inner tube is nested inside the collector. The collector is used to collect the hole position and diameter of the inner tube wall onto itself to obtain the collection hole, and then the collection hole is transferred to the inner drill jig. The inner drill jig is a cylindrical structure with an inner diameter equal to the outer diameter of the inner tube. A shim is laid inside the inner drill jig, and the thickness of the shim is the same as the thickness of the inner tube. The collector is nested inside the inner drill jig with the shim. At this time, the inner drill jig is used to receive the collection hole of the collector and transmit it to itself to obtain the inner drill jig hole. The inner drill jig is then wrapped around the new inner tube. At this time, the inner drill jig is used to return the hole on the new inner tube. The lugs of the split-type internal drill jig are locked during return drilling and hole making.

[0005] Furthermore, the tool also includes: an external drill jig; The outer drill jig and the inner drill jig together form the drill jig body; the inner diameter of the outer drill jig is equal to the outer diameter of the outer tube. An inner drill jig with shims is nested inside a collector, and an outer drill jig is placed on top of it. At this time, the drill jig body is used to receive the collection hole of the collector and transmit it to itself to obtain the inner drill jig hole and the outer drill jig hole. When the outer drill jig is embedded in the new outer tube, the outer drill jig is used to return the hole on the new outer tube.

[0006] Furthermore, the feature is that the collector and the drill jig both adopt a split structure. The collector is a two-cylinder structure, and the outer drill jig and the inner drill jig are two-cylinder structures with ears. The ears are provided with ear holes, and the two-cylinder structures with ears are locked together by locking pins.

[0007] Furthermore, when drilling holes on the outer drill jig and / or inner drill jig, When the collector is nested in the inner tube that needs to be replaced, the tube wall hole of the inner tube is returned to the collector to obtain the collection hole; when the collector is nested in the new inner tube, the collector is prepared with a collection hole corresponding to the tube wall hole of the inner tube that needs to be replaced, and only half of the collector structure, half of the inner drill jig structure and half of the outer drill jig structure are needed.

[0008] Furthermore, the gasket is semi-cylindrical in shape to simulate the shape and thickness of the inner tube.

[0009] Furthermore, using this tool, both inner and outer tubes can be returned to their boreholes simultaneously, or they can be returned to their boreholes separately.

[0010] Beneficial effects: (1) This tool is suitable for returning holes in various sleeve parts, especially for sleeve parts with high hole accuracy requirements.

[0011] (2) This tool is flexible, reliable, easy to operate, and saves the research and development and manufacturing costs of return hole tools, thereby reducing the manufacturing and maintenance costs of parts.

[0012] (3) This tool can improve the accuracy and efficiency of return holes.

[0013] (4) This utility model patent provides a solution for high-precision return holes for sleeve structures. Attached Figure Description

[0014] Figure 1 This is a general drawing of a high-precision return hole tool for a casing structure.

[0015] Figure 2 This is an exploded view of a high-precision reverse drilling tool for a casing structure. Components include: 1-locking pin, 2-outer drill jig, 3-inner drill jig, 4-shield, and 5-perforation tool.

[0016] Figure 3 This is a schematic diagram of operation step 1.

[0017] Figure 4 This is a schematic diagram of operation step 2.

[0018] Figure 5 This is a schematic diagram of operation step 3.

[0019] Figure 6-1 This is a schematic diagram of step 4 in the first case.

[0020] Figure 6-2 This is a schematic diagram of the first step in step 4 of the second scenario.

[0021] Figure 6-3 This is a schematic diagram of the second step in step 4 of the second scenario. Detailed Implementation

[0022] Based on the actual hole-making process, a new type of highly interchangeable and precise hole-returning tool has been developed, which is applicable to various small-diameter (small diameter refers to the diameter in which the tool cannot be inserted into the tube) sleeve structures and can be used to return the inner tube hole to the outer tube.

[0023] like Figure 1-2 As shown, the main structure consists of a borehole extractor 5, a drill jig body, and a gasket 4.

[0024] ① The borehole sampler has a two-part, semi-circular structure. The outer diameter of the sampler is the same as the inner diameter of the casing part, and the sampler thickness is 3mm. The sampler is used to collect the position and diameter of the inner tube of the casing part and transfer this information to the drill jig. The sampler is made of aluminum.

[0025] ②The drill jig body consists of an inner drill jig 3, an outer drill jig 2, and a locking pin 1.

[0026] The internal drill jig is a two-part, split structure with lugs. The inner diameter of the internal drill jig is the same as the outer diameter of the inner tube of the casing component, and the thickness of the internal drill jig is the same as the outer tube thickness of the casing component. The internal drill jig is used to receive the hole position and diameter information from the borehole sampler and to create new holes on the inner tube of the casing component. The lugs of the internal drill jig have φ6H7 (mm) holes; locking pins are inserted into these holes to position and lock the two semicircular structures. The internal drill jig is made of aluminum.

[0027] The external drill jig is a two-part, split structure with lugs. The inner diameter of the external drill jig is the same as the outer diameter of the casing part's outer tube, and the thickness of the external drill jig is 3mm. The external drill jig is used to receive the hole position and diameter information from the borehole sampler and to create new holes on the outer tube of the casing part. The lugs of the external drill jig have φ6H7 (mm) holes; locking pins are inserted into these holes to position and lock the two semicircular structures. The external drill jig is made of aluminum.

[0028] The locking pin is a round-shank type pin with knurled edges. The diameter of the part that mates with the hole is φ6g6 (mm), and it is used with a wing nut. It is inserted into the lug holes of the inner and outer drill jigs to lock them in place, facilitating hole making. The locking pin is made of steel.

[0029] ③ The shim is used to simulate the shape of the inner tube of the casing component when the borehole sampler returns to the drill jig body, ensuring their relative positional relationship. The shim is semi-circular, with inner and outer diameters matching the inner and outer diameters of the inner tube of the casing component, respectively. Its thickness is the same as the inner tube thickness. The material is aluminum.

[0030] This tool is lightweight and easy to use. Its main structure consists of a borehole sampler, a drill jig, and shims. When using it, according to actual needs, the hole position and diameter on the inner tube of the casing part are transferred to the borehole sampler. Then, the borehole sampler is correctly positioned with the inner and outer drill jigs using the shims, and the hole on the borehole sampler is transferred to the drill jig. Finally, the inner and outer drill jigs are used to drill holes on the inner and outer tubes of the new casing part, thus completing the hole transfer process.

[0031] The specific usage method is as follows: First step, such as Figure 3 As shown, first install the borehole sampler into the casing part—the old inner tube with holes. During installation, a peelable shim can be used to adjust the tightness of the borehole sampler. Then, turn the holes on the old inner tube back onto the borehole sampler.

[0032] The second step, as Figure 4 As shown, remove the borehole sampler, take the half-ring of the sampler, and take the half-rings of the inner and outer drill jigs, and clamp the shims. Use clamping tools such as bow-shaped universal clamps to clamp the above four parts. Return the hole on the borehole sampler to the inner and outer drill jigs.

[0033] The third step, as Figure 5 As shown, engage the non-perforated half-rings of the inner and outer drill jigs with the pre-drilled half-rings using a locking device. Then, return the perforated half-ring to the non-perforated half-ring drill jig.

[0034] The fourth step has two scenarios, as follows: Case 1: such as Figure 6-1 As shown, using the inner and outer drill jigs that have already been drilled in step three, simultaneously fit them onto the new inner and outer tubes of the casing part, and lock them in place with locking pins. Drill holes according to the holes on the inner and outer drill jigs, simultaneously drilling the new inner and outer tube holes of the casing part. This method is suitable for casing parts that are relatively thick or have high hardness.

[0035] The second scenario: Figure 6-2 and Figure 6-3 As shown, using the inner and outer drill jigs with holes already drilled in step three, fit them onto the new inner and outer tubes of the casing part, and lock them with locking pins. Drill holes according to the holes on the inner and outer drill jigs to create the new inner and outer tube holes of the casing part. Then, fit the new inner and outer tubes together. This method is suitable for casing parts that are relatively thin or have low hardness.

[0036] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0037] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A high-precision reverse drilling tool for sleeve structures, characterized in that, include: Hole-collecting tool, gasket, internal drill jig; The borehole sampler is a cylindrical structure, and its outer diameter is consistent with the inner diameter of the inner tube of the casing component. When the collector is drilling, an inner tube is nested inside the collector. The collector is used to collect the hole position and diameter of the inner tube wall onto itself to obtain the collection hole, and then the collection hole is transferred to the inner drill jig. The inner drill jig is a cylindrical structure with an inner diameter equal to the outer diameter of the inner tube. A shim is laid inside the inner drill jig, and the thickness of the shim is the same as the thickness of the inner tube. The collector is nested inside the inner drill jig with the shim. At this time, the inner drill jig is used to receive the collection hole of the collector and transmit it to itself to obtain the inner drill jig hole. The inner drill jig is then wrapped around the new inner tube. At this time, the inner drill jig is used to return the hole on the new inner tube. The lugs of the split-type internal drill jig are locked during return drilling and hole making.

2. The tool according to claim 1, characterized in that, The tool also includes: an external drill jig; The outer drill jig and the inner drill jig together form the drill jig body; the inner diameter of the outer drill jig is equal to the outer diameter of the outer tube. An inner drill jig with shims is nested inside a collector, and an outer drill jig is placed on top of it. At this time, the drill jig body is used to receive the collection hole of the collector and transmit it to itself to obtain the inner drill jig hole and the outer drill jig hole. When the outer drill jig is embedded in the new outer tube, the outer drill jig is used to return the hole on the new outer tube.

3. The tool according to claim 2, characterized in that, Both the collector and the drill jig adopt a split structure. The collector consists of two semi-cylindrical structures, while the outer and inner drill jigs are two semi-cylindrical structures with ears. The ears are provided with ear holes, and the two semi-cylindrical structures with ears are locked together by locking pins.

4. The tool according to claim 3, characterized in that, When drilling holes on the outer drill jig and / or inner drill jig When the collector is nested in the inner tube that needs to be replaced, the tube wall hole of the inner tube is returned to the collector to obtain the collection hole; when the collector is nested in the new inner tube, the collector is prepared with a collection hole corresponding to the tube wall hole of the inner tube that needs to be replaced, and only half of the collector structure, half of the inner drill jig structure and half of the outer drill jig structure are needed.

5. The tool according to claim 4, characterized in that, The gasket is semi-cylindrical in shape and is used to simulate the shape and thickness of the inner tube.

6. The tool according to claim 2, characterized in that, Using this tool, the inner and outer tubes can be returned to the hole simultaneously, or they can be returned to the hole separately.

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