A high-strength copper sleeve and production process

Abstract

The present invention discloses a high-strength copper sleeve and a production process, comprising a combined copper sleeve, the combined copper sleeve comprising an iron sleeve, an outer copper sleeve, and an inner copper lining, the outer copper sleeve being mounted on the outside of the iron sleeve, the inner copper lining being inserted into the inside of the iron sleeve, the outer side of the iron sleeve and the inner side of the outer copper sleeve respectively being provided with corresponding first embedding grooves, the inner side of the iron sleeve and the outer side of the inner copper lining respectively being provided with second embedding grooves, a clamping block being inserted between the first embedding grooves of the iron sleeve and the outer copper sleeve and the inner copper lining, and an annular bottom cover being welded to the bottom of the iron sleeve, the first embedding groove and the second embedding groove respectively extending to the annular bottom cover. The combined copper sleeve solves the problem of existing copper sleeves requiring replacement of the entire sleeve due to partial damage, greatly reduces the cost of material loss, and the triangular slots can reduce the weight of the iron sleeve, further reducing the transportation cost of the entire copper sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of copper sleeves, and particularly relates to a high-strength copper sleeve and a production process. Background Art

[0002] Copper sleeves are widely used on the shafts of various mechanical structures to reduce the wear caused by the movement of the shafts and to ensure the stability of mechanical use. However, due to the limited strength of the copper material, deformation and wear often occur, requiring workers to replace the entire copper sleeve, resulting in certain waste.

[0003] The existing shaft sleeves are made of heavy materials and have high material and transportation costs. In addition, if some areas are damaged beyond repair, it is impossible to disassemble and replace the copper sleeve structure separately, resulting in significant losses. To address this issue, we propose a high-strength copper sleeve and production process. Summary of the Invention

[0004] The object of the present invention is to provide a high-strength copper sleeve and a production process to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-strength copper sleeve and a production process, comprising a combined copper sleeve, the combined copper sleeve comprising an iron sleeve, an outer copper sleeve and an inner copper lining, the outer copper sleeve being arranged on the outside of the iron sleeve, the inner copper lining being inserted into the inside of the iron sleeve, the outer side of the iron sleeve and the inner side of the outer copper sleeve being respectively provided with corresponding first embedding grooves, the inner side of the iron sleeve and the outer side of the inner copper lining being respectively provided with second embedding grooves, clamping blocks being inserted between the first embedding grooves and the second embedding grooves of the iron sleeve, the bottom of the iron sleeve being welded to an annular bottom cover, the first embedding groove and the second embedding groove respectively extending to the annular bottom cover.

[0006] Furthermore, corresponding first semicircular threaded holes are respectively opened on both sides of the top inner diameter of the iron sleeve and on both sides of the top outer diameter of the inner copper lining, and corresponding second semicircular threaded holes are respectively opened on both sides of the top outer diameter of the iron sleeve and on both sides of the top inner diameter of the outer copper sleeve. The iron sleeve and the first semicircular threaded holes of the inner copper lining are installed and connected by bolts, and the iron sleeve and the second semicircular threaded holes of the outer copper sleeve are installed and connected by bolts.

[0007] Furthermore, graphite blocks are fixedly embedded in the inner walls of the outer copper sleeve and the inner copper lining, the angle difference between the graphite blocks is 10°-15°, and the graphite blocks occupy no less than 30% of the surface area of ​​the outer copper sleeve and the inner copper lining.

[0008] Furthermore, reinforcing ribs are arranged at equal distances inside the iron sleeve, the reinforcing ribs are plate-shaped, the reinforcing ribs are hot-melt connected to the iron sleeve, and triangular slots are formed between the reinforcing ribs.

[0009] A production process for a high-strength copper sleeve comprises the following specific steps:

[0010] Step 1: Prepare the outer copper sleeve and inner copper lining; make a casting mold for the outer copper sleeve and inner copper lining, and the casting cavity of the casting mold is 0.2-1mm larger than the required thickness of the outer copper sleeve and inner copper lining. Select high-strength brass material and heat-smelt it and then inject it into the casting mold of the outer copper sleeve and inner copper lining to obtain the blanks of the copper sleeve and copper lining. The chemical formula of high-strength brass is ZCuZn25Al6;

[0011] Step 2: Processing graphite blocks inside the outer copper sleeve and inner copper lining; according to the drawings, the copper sleeve and copper lining blanks are turned into holes of the required size, and then the graphite blocks are inserted into the holes, and the gap between the graphite blocks and the holes is filled with hot-melt graphite material. After cooling, the inner and outer surfaces of the copper sleeve and copper lining are turned and milled to obtain the outer copper sleeve and inner copper lining with graphite blocks;

[0012] Step three: preparing an iron sleeve; preparing a casting mold according to the iron sleeve and the annular bottom cover, and the casting cavity of the casting mold is larger than the required thickness of the iron sleeve by 0.2-1mm, and selecting a high-strength metal raw material and hot-melting it and injecting it into the casting mold to obtain an iron sleeve blank;

[0013] Step 4: Assemble and fix the outer copper sleeve and inner copper lining to the inner and outer sides of the iron sleeve respectively;

[0014] Step 5: After cleaning the surface of the iron sleeve obtained by step 4, the outer copper sleeve and the inner copper lining are obtained to obtain a high-strength copper sleeve.

[0015] Furthermore, the chemical formula of the high-strength brass is ZCuZn25Al6.

[0016] Furthermore, the high-strength metal raw material in step three is manganese steel.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: a combined copper sleeve is composed of an iron sleeve, an outer copper sleeve and an inner copper lining, the iron sleeve ensures the use strength of the overall copper sleeve, and the outer copper sleeve and the inner copper lining enable the copper sleeve to achieve a self-lubricating effect inside and outside, so that the overall copper sleeve achieves higher use strength while greatly reducing the material cost of the copper sleeve. When the iron sleeve, the outer copper sleeve or the inner copper lining are worn or damaged during use, personnel can disassemble and replace the iron sleeve, the outer copper sleeve or the inner copper lining respectively, solving the problem that the existing copper sleeve needs to be replaced as a whole due to damage to some areas, greatly reducing the cost of material loss, and the triangular slot can reduce the weight of the iron sleeve, further reducing the transportation cost of the overall copper sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a high-strength copper sleeve and its production process according to the present invention.

[0019] Figure 2The figure is a structural schematic diagram of a high-strength copper sleeve and its production process according to the present invention.

[0020] Figure 3 The figure is a schematic diagram of the iron sleeve structure of a high-strength copper sleeve and its production process according to the present invention.

[0021] Figure 4 The figure is a schematic diagram of the top cross-sectional structure of an iron sleeve of a high-strength copper sleeve and its production process according to the present invention.

[0022] Figure 5 The present invention is a high-strength copper sleeve and production process Figure 3 Enlarged schematic diagram of point A in the middle.

[0023] In the figure: 1. Combined copper sleeve; 2. Iron sleeve; 3. Outer copper sleeve; 4. Inner copper lining; 5. Graphite block; 6. First embedding groove; 7. Second embedding groove; 8. Clamping block; 9. Annular bottom cover; 10. First semicircular threaded hole; 11. Second semicircular threaded hole; 12. Reinforcing rib; 13. Triangular slot hole. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1-5 As shown, a high-strength copper sleeve and its production process include a combined copper sleeve 1, wherein the combined copper sleeve 1 includes an iron sleeve 2, an outer copper sleeve 3 and an inner copper lining 4, the outer copper sleeve 3 is sleeved on the outside of the iron sleeve 2, and the inner copper lining 4 is inserted into the inside of the iron sleeve 2, and corresponding first embedding grooves 6 are respectively opened on the outside of the iron sleeve 2 and the inside of the outer copper sleeve 3, and second embedding grooves 7 are respectively opened on the inside of the iron sleeve 2 and the outside of the inner copper lining 4, and blocks 8 are inserted between the first embedding grooves 6 and the second embedding grooves 7 of the iron sleeve 2 and the outer copper sleeve 3 and the inner copper lining 4. An annular bottom cover 9 is welded to the bottom of the iron sleeve 2, and the first embedding grooves 6 and the second embedding grooves 7 respectively extend to the annular bottom cover 9.

[0027] Among them, corresponding first semicircular threaded holes 10 are respectively opened on both sides of the inner diameter top of the iron sleeve 2 and on both sides of the outer diameter top of the inner copper lining 4, and corresponding second semicircular threaded holes 11 are respectively opened on both sides of the outer diameter top of the iron sleeve 2 and on both sides of the inner diameter top of the outer copper sleeve 3. The iron sleeve 2 and the first semicircular threaded holes 10 of the inner copper lining 4 are installed and connected by bolts, and the iron sleeve 2 and the second semicircular threaded holes 11 of the outer copper sleeve 3 are installed and connected by bolts.

[0028] Graphite blocks 5 are fixedly embedded in the inner walls of the outer copper sleeve 3 and the inner copper lining 4. The angle difference between the graphite blocks 5 is 10°, and the graphite blocks 5 occupy no less than 30% of the surface area of ​​the outer copper sleeve 3 and the inner copper lining 4.

[0029] Among them, reinforcing ribs 12 are arranged at equal distances inside the iron sleeve 2. The reinforcing ribs 12 are plate-shaped and are hot-melt connected to the iron sleeve 2. Triangular slots 13 are formed between the reinforcing ribs 12.

[0030] A production process for a high-strength copper sleeve comprises the following specific steps:

[0031] Step 1: Prepare the outer copper sleeve 3 and the inner copper lining 4; make a casting mold for the outer copper sleeve 3 and the inner copper lining 4, and the casting cavity of the casting mold is larger than the required thickness of the outer copper sleeve 3 and the inner copper lining 4 by 0.2 mm. Select high-strength brass material and heat-smelt it and then inject it into the casting mold of the outer copper sleeve 3 and the inner copper lining 4 to obtain the blanks of the copper sleeve and the copper lining. The chemical formula of high-strength brass is ZCuZn25Al6;

[0032] Step 2: Processing graphite blocks 5 inside the outer copper sleeve 3 and the inner copper liner 4; according to the drawing, the copper sleeve and the copper liner blanks are turned into holes of the required size, and then the graphite blocks are inserted into the holes, and the gap between the graphite blocks and the holes is filled with hot-melt graphite material. After cooling, the inner and outer surfaces of the copper sleeve and the copper liner are turned and milled to obtain the outer copper sleeve 3 and the inner copper liner 4 with the graphite blocks 5;

[0033] Step three: prepare the iron sleeve 2; according to the iron sleeve 2 and the annular bottom cover 9, a casting mold is prepared, and the casting cavity of the casting mold is larger than the required thickness of the iron sleeve 2 by 0.2 mm, and a high-strength metal raw material is selected and hot-melted and injected into the casting mold to obtain an iron sleeve blank. The iron sleeve 2 having a triangular slot 13 on the inner wall is obtained by milling and turning on a milling machine, and then the annular bottom cover 9 is welded to the bottom of the iron sleeve 2 to achieve sealing of the bottom of the triangular slot 13. The high-strength metal raw material is manganese steel;

[0034] Step 4: Assemble the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2 respectively; 1) Take two sets of clamping blocks 8 and insert them into the first embedding groove 6 and the second embedding groove 7 between the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2, and the clamping blocks 8 and the inner copper lining 4 to the iron sleeve 2 are made of the same material. The length and width of the clamping blocks 8 are larger than the first embedding groove 6 and the second embedding groove 70.2mm, so that after the clamping blocks 8 are smashed in, the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2 can be stably engaged with the first embedding groove 6 and the second embedding groove 7 , so that the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are fixedly connected; 2), threaded holes are drilled on the tops of the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 after the socket connection, so that the first semicircular threaded hole 10 and the second semicircular threaded hole 11 are formed on the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 respectively, and then the first semicircular threaded hole 10 and the second semicircular threaded hole 11 of the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are riveted by bolts, so that the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are further fixed;

[0035] Step 5: Get the high-strength copper sleeve.

[0036] Example 2

[0037] like Figure 1-5 As shown, a high-strength copper sleeve and its production process include a combined copper sleeve 1, wherein the combined copper sleeve 1 includes an iron sleeve 2, an outer copper sleeve 3 and an inner copper lining 4, the outer copper sleeve 3 is sleeved on the outside of the iron sleeve 2, and the inner copper lining 4 is inserted into the inside of the iron sleeve 2, and corresponding first embedding grooves 6 are respectively opened on the outside of the iron sleeve 2 and the inside of the outer copper sleeve 3, and second embedding grooves 7 are respectively opened on the inside of the iron sleeve 2 and the outside of the inner copper lining 4, and blocks 8 are inserted between the first embedding grooves 6 and the second embedding grooves 7 of the iron sleeve 2 and the outer copper sleeve 3 and the inner copper lining 4. An annular bottom cover 9 is welded to the bottom of the iron sleeve 2, and the first embedding grooves 6 and the second embedding grooves 7 respectively extend to the annular bottom cover 9.

[0038] Among them, corresponding first semicircular threaded holes 10 are respectively opened on both sides of the inner diameter top of the iron sleeve 2 and on both sides of the outer diameter top of the inner copper lining 4, and corresponding second semicircular threaded holes 11 are respectively opened on both sides of the outer diameter top of the iron sleeve 2 and on both sides of the inner diameter top of the outer copper sleeve 3. The iron sleeve 2 and the first semicircular threaded holes 10 of the inner copper lining 4 are installed and connected by bolts, and the iron sleeve 2 and the second semicircular threaded holes 11 of the outer copper sleeve 3 are installed and connected by bolts.

[0039] Graphite blocks 5 are fixedly embedded in the inner walls of the outer copper sleeve 3 and the inner copper lining 4. The angle difference between the graphite blocks 5 is 15°, and the graphite blocks 5 occupy no less than 30% of the surface area of ​​the outer copper sleeve 3 and the inner copper lining 4.

[0040] Among them, reinforcing ribs 12 are arranged at equal distances inside the iron sleeve 2. The reinforcing ribs 12 are plate-shaped and are hot-melt connected to the iron sleeve 2. Triangular slots 13 are formed between the reinforcing ribs 12.

[0041] A production process for a high-strength copper sleeve comprises the following specific steps:

[0042] Step 1: Prepare the outer copper sleeve 3 and the inner copper lining 4; make a casting mold for the outer copper sleeve 3 and the inner copper lining 4, and the casting cavity of the casting mold is 1 mm larger than the required thickness of the outer copper sleeve 3 and the inner copper lining 4. Select high-strength brass material and heat-smelt it and then inject it into the casting mold of the outer copper sleeve 3 and the inner copper lining 4 to obtain the blanks of the copper sleeve and the copper lining. The chemical formula of high-strength brass is ZCuZn25Al6;

[0043] Step 2: Processing graphite blocks 5 inside the outer copper sleeve 3 and the inner copper liner 4; according to the drawing, the copper sleeve and the copper liner blanks are turned into holes of the required size, and then the graphite blocks are inserted into the holes, and the gap between the graphite blocks and the holes is filled with hot-melt graphite material. After cooling, the inner and outer surfaces of the copper sleeve and the copper liner are turned and milled to obtain the outer copper sleeve 3 and the inner copper liner 4 with the graphite blocks 5;

[0044] Step three: prepare the iron sleeve 2; according to the iron sleeve 2 and the annular bottom cover 9, a casting mold is prepared, and the casting cavity of the casting mold is larger than the required thickness of the iron sleeve 2 by 1 mm, and a high-strength metal raw material is selected and hot-melted and injected into the casting mold to obtain an iron sleeve blank. The iron sleeve 2 having a triangular slot 13 on the inner wall is obtained by milling and turning on a milling machine, and then the annular bottom cover 9 is welded to the bottom of the iron sleeve 2 to achieve sealing of the bottom of the triangular slot 13. The high-strength metal raw material is manganese steel;

[0045] Step 4: Assemble the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2 respectively; 1) Take two sets of clamping blocks 8 and insert them into the first embedding groove 6 and the second embedding groove 7 between the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2, and the clamping blocks 8 and the inner copper lining 4 to the iron sleeve 2 are made of the same material. The length and width of the clamping blocks 8 are larger than the first embedding groove 6 and the second embedding groove 7 by 70.5mm. After the clamping blocks 8 are smashed in, they can stably engage with the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 to the iron sleeve 2. , so that the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are fixedly connected; 2), threaded holes are drilled on the tops of the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 after the socket connection, so that the first semicircular threaded hole 10 and the second semicircular threaded hole 11 are formed on the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 respectively, and then the first semicircular threaded hole 10 and the second semicircular threaded hole 11 of the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are riveted by bolts, so that the iron sleeve 2, the outer copper sleeve 3 and the inner copper lining 4 are further fixed;

[0046] Step 5: Get the high-strength copper sleeve.

[0047] The working principle and use process of the present invention are as follows: an iron sleeve 2, an outer copper sleeve 3 and an inner copper lining 4 are used to form a combined copper sleeve, the iron sleeve 2 ensures the use strength of the overall copper sleeve, and the outer copper sleeve 3 and the inner copper lining 4 enable the copper sleeve to achieve a self-lubricating effect inside and outside, so that the overall copper sleeve can achieve higher use strength while greatly reducing the material cost of the copper sleeve. When the iron sleeve 2, the outer copper sleeve 3 or the inner copper lining 4 are worn or damaged during use, personnel can disassemble and replace the iron sleeve 2, the outer copper sleeve 3 or the inner copper lining 4 respectively, solving the problem that the existing copper sleeve needs to be replaced as a whole due to damage to some areas, greatly reducing the cost of material loss, and the triangular slot 13 can reduce the weight of the iron sleeve 2, further reducing the transportation cost of the overall copper sleeve.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "set", "connected", "fixed", "screwed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection;

[0050] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-strength copper sleeve, comprising a combined copper sleeve (1), characterized in that: The combined copper sleeve (1) comprises an iron sleeve (2), an outer copper sleeve (3) and an inner copper lining (4), wherein the outer copper sleeve (3) is sleeved on the outside of the iron sleeve (2), and the inner copper lining (4) is inserted into the inside of the iron sleeve (2); the outer side of the iron sleeve (2) and the inner side of the outer copper sleeve (3) are respectively provided with corresponding first embedding grooves (6); the inner side of the iron sleeve (2) and the outer side of the inner copper lining (4) are respectively provided with second embedding grooves (7); a clamping block (8) is inserted between the first embedding groove (6) and the second embedding groove (7) of the iron sleeve (2) and the outer copper sleeve (3) and the inner copper lining (4); an annular bottom cover (9) is welded to the bottom of the iron sleeve (2), and the first embedding groove (6) and the second embedding groove (7) extend to the annular bottom cover (9); The iron sleeve (2) and the inner copper liner (4) are provided with corresponding first semicircular threaded holes (10) on both sides of the inner diameter top and the inner copper liner (4) on both sides of the outer diameter top, respectively. The iron sleeve (2) and the inner copper liner (4) are provided with corresponding second semicircular threaded holes (11) on both sides of the outer diameter top and the outer copper sleeve (3) on both sides of the inner diameter top. The iron sleeve (2) and the first semicircular threaded holes (10) of the inner copper liner (4) are connected by bolts, and the iron sleeve (2) and the second semicircular threaded holes (11) of the outer copper sleeve (3) are connected by bolts. Graphite blocks (5) are fixedly embedded in the inner walls of the outer copper sleeve (3) and the inner copper lining (4), the angle difference between the graphite blocks (5) is 10°-15°, and the graphite blocks (5) occupy no less than 30% of the surface area of ​​the outer copper sleeve (3) and the inner copper lining (4); Reinforcing ribs (12) are arranged at equal distances inside the iron sleeve (2); the reinforcing ribs (12) are plate-shaped; the reinforcing ribs (12) are connected to the iron sleeve (2) by hot melt; and triangular slots (13) are formed between the reinforcing ribs (12).

2. The production process of a high-strength copper sleeve according to claim 1, characterized in that: The specific steps include: Step 1: preparing an outer copper sleeve (3) and an inner copper lining (4); making a casting mold for the outer copper sleeve (3) and the inner copper lining (4), wherein the casting cavity of the casting mold is larger than the required thickness of the outer copper sleeve (3) and the inner copper lining (4) by 0.2-1 mm, selecting a high-strength brass material and hot-melting it and injecting it into the casting mold of the outer copper sleeve (3) and the inner copper lining (4) to obtain a blank of the copper sleeve and the copper lining, wherein the chemical formula of the high-strength brass is ZCuZn25Al6; Step 2: machining graphite blocks (5) inside the outer copper sleeve (3) and the inner copper lining (4); turning the copper sleeve and the copper lining blanks into holes of the required size according to the drawings, then inserting the graphite blocks into the holes, and filling the gap between the graphite blocks and the holes with hot-melt graphite material, and turning and milling the inner and outer surfaces of the copper sleeve and the copper lining after cooling to obtain the outer copper sleeve (3) and the inner copper lining (4) with the graphite blocks (5); Step 3: preparing the iron sleeve (2); preparing a casting mold according to the iron sleeve (2) and the annular bottom cover (9), wherein the casting cavity of the casting mold is larger than the required thickness of the iron sleeve (2) by 0.2-1 mm, and selecting a high-strength metal raw material and hot-melting it and injecting it into the casting mold to obtain an iron sleeve blank; Step 4: Fit and fix the outer copper sleeve (3) and the inner copper lining (4) to the inner and outer sides of the iron sleeve (2); Step 5: After cleaning the surface of the iron sleeve (2) obtained from the outer copper sleeve (3) and the inner copper lining (4) obtained from step 4, a high-strength copper sleeve is obtained.

3. The high-strength copper sleeve and production process according to claim 1, characterized in that: The chemical formula of the high-strength brass is ZCuZn25Al6.

4. The high-strength copper sleeve and production process according to claim 1, characterized in that: In the step 3, the high-strength metal raw material is manganese steel.

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