A connecting sleeve structure made of glass fiber material and a manufacturing method thereof

Abstract

The application discloses a connecting sleeve structure of glass fiber material and a manufacturing method, relates to the technical field of connecting sleeves, and comprises a drill connecting sleeve, the drill connecting sleeve is composed of a connecting sleeve main body and a connecting sleeve internal thread, and the connecting sleeve main body and the connecting sleeve internal thread on the drill connecting sleeve are both made of glass fiber material. The drill connecting sleeve made of glass fiber can effectively avoid the adhesion and seizure of the drill connecting sleeve and the connecting steel piece under heavy load working conditions by utilizing the different thermal expansion coefficients of glass fiber and steel on the premise of meeting sufficient tensile strength, so that the utilization efficiency of the drill connecting sleeve is improved. Meanwhile, the drill connecting sleeve made of glass fiber has the characteristics of corrosion resistance and fatigue resistance, is suitable for field operation and continuous operation, and has the advantages of light weight, convenient logistics transportation and storage compared with the drill connecting sleeve made of steel.

Description

Technical Field

[0001] This invention relates to the field of connecting sleeve technology, and in particular to a connecting sleeve structure and manufacturing method made of glass fiber material. Background Technology

[0002] A connecting sleeve is a component of a drilling tool used in rock drilling. It is a threaded sleeve-shaped part that connects the drill bit shank and the drill rod, or the drill rod itself. Connecting sleeves are generally used in the field, primarily bearing the axial tensile force of the threads, under harsh working conditions. Existing connecting sleeves are made of steel with a blackened surface treatment, which makes them prone to wear and corrosion during field use due to the inherent properties of metal. Under continuous heavy loads, because both the connecting sleeve and the two connected parts are made of steel with the same coefficient of thermal expansion, continuous operation can lead to overheating and problems such as adhesion and jamming. Furthermore, the use of steel results in a heavy weight and poor fatigue resistance. Summary of the Invention

[0003] The main objective of this invention is to provide a connecting sleeve structure made of glass fiber, its manufacturing method and process, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A connecting sleeve structure made of glass fiber material includes a drill bit connecting sleeve, which is composed of a connecting sleeve body and a connecting sleeve internal thread. Both the connecting sleeve body and the connecting sleeve internal thread of the drill bit connecting sleeve are made of glass fiber material.

[0006] Preferably, the internal thread of the connecting sleeve on the drill bit connecting sleeve is provided on the inner wall of the connecting sleeve body.

[0007] Preferably, the connecting sleeve body and the connecting sleeve internal thread are integrally formed.

[0008] A method for manufacturing a connecting sleeve structure made of fiberglass includes the following steps:

[0009] S1: Mold making: First, select the appropriate steel for making the mold, and then use a CNC machine tool to process the selected mold steel according to the product drawings. Finally, the mold used to make the drill bit connecting sleeve is made.

[0010] S2: Applying release agent: Applying a coating agent to the surface of the mold made in step S1 to facilitate the demolding of the molded and cured drill bit connecting sleeve;

[0011] S3: Connecting sleeve molding: Install and fix the mold coated with release agent, then first wrap and cover the surface of the mold coated with release agent with glass fiber, then cover the glass fiber with resin, and repeat this process to form a multi-layer structure. It is necessary to ensure that each layer is dense and reliable, and finally form a certain thickness.

[0012] S4: Connecting sleeve curing: The drill bit connecting sleeve formed in step S3, together with the mold, is placed into a heating furnace for heating, which eventually cures the drill bit connecting sleeve. Then the drill bit connecting sleeve and the mold are removed from the heating furnace and cooled.

[0013] S5: Demolding of the connecting sleeve: Rotate the drill bit connecting sleeve that has been heated and cured in step S4 on the mold, so as to finally unscrew the cured drill bit connecting sleeve off the mold;

[0014] S6: Machining external dimensions: Install and fix the drill bit connecting sleeve onto the lathe, and then use the lathe to machine the shape and length of the drill bit connecting sleeve to finally complete the product;

[0015] S7: Inspection and Packaging: The drill bit connecting sleeves processed by the machine tool are inspected using testing equipment to ensure that the finished drill bit connecting sleeves meet the production design requirements.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By using a drill bit connector sleeve made of fiberglass, sufficient tensile strength is ensured. However, by utilizing the different coefficients of thermal expansion between fiberglass and steel, the sleeve effectively prevents adhesion and seizing between the connector and the connecting steel component under heavy loads. This improves the efficiency of the connector sleeve and ultimately reduces user costs. Furthermore, the fiberglass connector sleeve is corrosion-resistant and fatigue-resistant, making it suitable for field operations and continuous operation. Compared to steel connector sleeves, fiberglass connector sleeves are lighter, easier to transport, and easier to store. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the drill bit connecting sleeve of the present invention;

[0019] Figure 2 This is a cross-sectional view of the drill bit connecting sleeve of the present invention;

[0020] Figure 3 This is a flowchart illustrating the manufacturing process of the drill bit connecting sleeve of the present invention.

[0021] In the figure: 1. Drill tool connecting sleeve; 2. Connecting sleeve body; 3. Connecting sleeve internal thread. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example 1:

[0024] A fiberglass connecting sleeve structure includes a drill bit connecting sleeve 1, which consists of a connecting sleeve body 1 and an internal thread 2. Both the connecting sleeve body 1 and the internal thread 2 are made of fiberglass. The internal thread 2 is located on the inner wall of the connecting sleeve body 1, and the connecting sleeve body 1 and the internal thread 2 are integrally formed. By using a fiberglass connecting sleeve 1, under the premise of meeting sufficient tensile strength, the different thermal expansion coefficients of fiberglass and steel can effectively avoid the adhesion and seizing of the connecting sleeve 1 and the connecting steel parts under heavy load conditions. This improves the utilization efficiency of the connecting sleeve 1 and ultimately reduces the user's operating costs. At the same time, the fiberglass connecting sleeve 1 has the characteristics of corrosion resistance and fatigue resistance, making it suitable for field operations and continuous operation. Compared with the steel connecting sleeve 1, the fiberglass connecting sleeve 1 has the advantages of being lightweight and easy to transport and store.

[0025] Example 2:

[0026] Based on Example 1, a method for manufacturing a connecting sleeve structure made of glass fiber material includes the following steps:

[0027] S1: Mold making: First, select the appropriate steel for making the mold, and then use a CNC machine tool to process the selected mold steel according to the product drawings. Finally, the mold used to make the drill bit connecting sleeve 1 will be made. The mold making can be based on the size of the product. Multiple products can be made on one mold, or double-headed multi-headed threads.

[0028] S2: Applying release agent: Applying a coating agent to the surface of the mold made in step S1 to facilitate the demolding of the drill bit connecting sleeve 1 after molding and curing;

[0029] S3: Connecting sleeve molding: Install and fix the mold coated with release agent, then first wrap and cover the surface of the mold coated with release agent with glass fiber, then cover the glass fiber with resin, and repeat this process to form a multi-layer structure. It is necessary to ensure that each layer is dense and reliable, and finally form a certain thickness. The material of glass fiber can be selected according to the design of the product drawings, and glass fiber raw materials with different tensile strengths can be selected.

[0030] S4: Connecting sleeve curing: The drill bit connecting sleeve 1 formed in step S3, together with the mold, is placed into the heating furnace for heating, and finally the drill bit connecting sleeve 1 is cured. Then the drill bit connecting sleeve 1 and the mold are taken out of the heating furnace and cooled.

[0031] S5: Demolding of connecting sleeve: Rotate the drill connecting sleeve 1, which has been heated and cured in step S4, on the mold to finally unscrew the cured drill connecting sleeve 1 from the mold;

[0032] S6: Machining external dimensions: Install and fix the drill bit connecting sleeve 1 onto the lathe, and then use the lathe to machine the shape and length of the drill bit connecting sleeve 1 to finally complete the product;

[0033] S7: Inspection and Packaging: The drill bit connecting sleeve 1 after being processed by the machine tool is inspected using testing equipment to ensure that the completed drill bit connecting sleeve 1 meets the production design requirements.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting sleeve structure of glass fiber material, comprising a drill connecting sleeve (1), the drill connecting sleeve (1) is composed of a connecting sleeve main body (2) and a connecting sleeve internal thread (3), characterized in that: The connecting sleeve body (2) and the connecting sleeve internal thread (3) on the drill bit connecting sleeve (1) are both made of glass fiber; the connecting sleeve internal thread (3) on the drill bit connecting sleeve (1) is set on the inner wall of the connecting sleeve body (2); the connecting sleeve body (2) and the connecting sleeve internal thread (3) are integrally formed structures; The method for manufacturing the fiberglass connecting sleeve structure includes the following steps: S1: Mold making: First, select the appropriate steel for making the mold, and then use a CNC machine tool to process the selected mold steel according to the product drawings. Finally, the mold used to make the drill bit connecting sleeve (1) is made. S2: Apply release agent: Apply a coating agent to the surface of the mold made in step S1 to facilitate the demolding of the molded and cured drill bit connecting sleeve (1); S3: Connecting sleeve molding: Install and fix the mold coated with release agent, then first wrap and cover the surface of the mold coated with release agent with glass fiber, then cover the glass fiber with resin, and repeat this process to form a multi-layer structure. It is necessary to ensure that each layer is dense and reliable, and finally form a certain thickness. S4: Connecting sleeve curing: The drill bit connecting sleeve (1) formed in step S3, together with the mold, is placed into the heating furnace for heating, so that the drill bit connecting sleeve (1) is cured. Then the drill bit connecting sleeve (1) together with the mold is taken out of the heating furnace and cooled. S5: Demolding of the connecting sleeve: Rotate the drill connecting sleeve (1) that has been heated and cured in step S4 on the mold, so as to finally unscrew the cured drill connecting sleeve (1) off the mold; S6: Machining external dimensions: Install and fix the drill bit connecting sleeve (1) onto the lathe, and then use the lathe to machine the shape and length of the drill bit connecting sleeve (1) to finally complete the product; S7: Inspection and Packaging: The drill bit connecting sleeve (1) after being processed by the machine tool is inspected using testing equipment to ensure that the completed drill bit connecting sleeve (1) meets the production design requirements.

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