Long-service-life, low-abrasion and corrosion-resistant main shaft copper bush

Abstract

The utility model relates to the technical field of mechanical parts, in particular to a long-service-life, low-abrasion and corrosion-resistant main shaft copper bush which comprises a shaft sleeve, the shaft sleeve is composed of an upper half sleeve and a lower half sleeve, a plurality of receding grooves are formed in the outer wall of the upper half sleeve, through holes are formed in the receding grooves, and connecting bolts are inserted into the through holes. The bottom of the connecting bolt is in threaded connection with a threaded hole formed in the surface of the lower half sleeve; annular grooves are formed in the upper half sleeve and the lower half sleeve, a plurality of oil inlet grooves are formed in the annular grooves, oil inlet holes are formed in the oil inlet grooves, and a plurality of lubricating grooves communicated with the oil inlet holes are formed in the upper half sleeve and the lower half sleeve. The long-service-life, low-abrasion and corrosion-resistant main shaft copper sleeve has the advantages of being easy to replace and convenient to maintain, continuous lubrication can be achieved, stable operation of a main shaft is guaranteed, the main shaft can be lubricated from multiple positions, friction between the main shaft and the copper sleeve can be reduced, and the requirement for long-time high-speed operation can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical accessory technical field, concretely is long -life low abrasion corrosion -resistant main shaft copper bush. BACKGROUND

[0002] In the mechanical transmission system, the main shaft copper bush as the key support part, bears the role of reducing friction, guaranteeing the main shaft operation accuracy. The existing main shaft copper bush has the following shortcomings: one, the existing shaft sleeve is mostly integral, adopts the mode of setting to install on the main shaft, when the excessive wear needs replacement, then needs to remove the whole part on the copper bush side of the main shaft to take down, has the problem of inconvenient dismounting; Two, the single lubricating structure in the copper bush, it is difficult to meet the long time high speed operation demand; Three, its limited wear resistance, has the problem of short service life. SUMMARY

[0003] In view of the deficiencies of prior art, the utility model provides long -life low abrasion corrosion -resistant main shaft copper bush, solves the technical problem that the existing copper bush is difficult to replace, the poor lubricating effect and the lower service life.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: long -life low abrasion corrosion -resistant main shaft copper bush, including the shaft sleeve, the shaft sleeve is composed of upper half sleeve and lower half sleeve, a plurality of avoiding grooves are set up on the outer wall of upper half sleeve, the avoiding groove is equipped with the through hole, the connecting bolt is inserted in the through hole, the bottom of connecting bolt is connected in the threaded hole on the surface of lower half sleeve and is equipped with the threaded hole;

[0005] The annular groove is set up on the upper half sleeve and the lower half sleeve, a plurality of oil inlets are set up in the annular groove, the oil inlet is set up in the oil inlet, and the inner wall of the lubricating groove is provided with the groove corresponding to the position of the oil inlet.

[0006] Preferably, the side wall of the upper half sleeve close to the end face is fixed with a positioning block, and the side wall of the lower half sleeve close to the end face is provided with a positioning groove matched with the positioning block.

[0007] Preferably, the inner wall of the lubricating groove is provided with a groove corresponding to the position of the oil inlet.

[0008] Preferably, the inner wall of the upper half sleeve and the lower half sleeve is provided with an assembly groove.

[0009] Preferably, one end of the upper half sleeve and the lower half sleeve is provided with an annular flange.

[0010] Preferably, the inner wall of the upper half sleeve and the lower half sleeve is provided with a PVD coating.

[0011] By the above technical scheme, the utility model provides long -life low abrasion corrosion -resistant main shaft copper bush, at least has the following beneficial effects:

[0012] 1. The long-life low-wear corrosion-resistant copper bushing for the main shaft, by dividing the shaft sleeve into two parts, when replacing, only the connecting bolts need to be removed, and the upper half and the lower half can be separated, so that the bushing can be replaced without disassembling other parts during later maintenance, having the advantages of simple replacement and convenient maintenance.

[0013] 2. The long-life low-wear corrosion-resistant copper bushing for the main shaft, by setting the annular groove, the oil inlet groove, the oil inlet hole, the lubricating groove and the groove, the lubricating oil can enter the lubricating groove through the annular groove, the oil inlet groove and the oil inlet hole, and the lubricating groove can store lubricating oil, which can realize continuous lubrication and ensure the stable operation of the main shaft, and can lubricate the main shaft from multiple positions, reducing the friction between the main shaft and the copper bushing, and meeting the long-time high-speed operation requirement.

[0014] 3. The long-life low-wear corrosion-resistant copper bushing for the main shaft, by setting the PVD coating, the wear resistance of the copper bushing can be further improved, thereby prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of this application:

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0017] Figure 2 It is a schematic diagram of the structure after splitting of the present application;

[0018] Figure 3 It is a schematic diagram of the structure of the lower half of the present application;

[0019] Figure 4 It is a schematic diagram of the structure of the present application from the side;

[0020] REFERENCE NUMERALS:

[0021] 1. shaft sleeve; 101, lower half; 1011, positioning groove; 1012, threaded hole; 102, upper half; 1021, avoiding groove; 1022, through hole; 103, positioning block; 104, connecting bolt; 105, annular groove; 106, oil inlet groove; 107, oil inlet hole; 108, lubricating groove; 109, groove; 110, assembly groove; 111, PVD coating. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] The main shaft copper sleeve is a copper mechanical part used in the main shaft part of a mechanical device, which is generally applied to the main shaft of a lathe, a milling machine, a grinding machine and the like. The main shaft copper sleeve serves to ensure the rotation accuracy and stability of the main shaft, and helps to improve the accuracy of the processed parts.

[0024] Based on the technical defects that the existing copper sleeve is difficult to replace, has poor lubrication effect and low service life, please refer to Figures 1-4 The long-life low-wear corrosion-resistant main shaft copper sleeve provided by the embodiment has the advantages of simple replacement and convenient maintenance, and can reduce the friction between the main shaft and the copper sleeve, thereby meeting the long-time high-speed operation requirement. The sleeve 1 is composed of an upper half sleeve 102 and a lower half sleeve 101. A plurality of avoiding grooves 1021 are formed in the outer wall of the upper half sleeve 102, and a through hole 1022 is arranged in each avoiding groove 1021. A connecting bolt 104 is inserted into the through hole 1022. The bottom of the connecting bolt 104 is threadedly connected to a threaded hole 1012 formed in the surface of the lower half sleeve 101. By dividing the sleeve 1 into two parts, when replacing, only the connecting bolt 104 needs to be removed, and then the upper half sleeve 102 and the lower half sleeve 101 can be separated. In this way, the sleeve can be replaced without disassembling other components during later maintenance.

[0025] The existing copper sleeve has a single internal lubrication structure, which is difficult to meet the long-time high-speed operation requirement. In view of this problem, please refer to Figure 2 and Figure 3 An annular groove 105 is formed in each of the upper half sleeve 102 and the lower half sleeve 101. A plurality of oil inlet grooves 106 are formed in the annular groove 105. An oil inlet hole 107 is formed in each oil inlet groove 106. A plurality of lubrication grooves 108 are formed in the inner part of the upper half sleeve 102 and the lower half sleeve 101 and are in communication with the oil inlet holes 107. The lubricating oil can enter the lubrication grooves 108 through the annular grooves 105, the oil inlet grooves 106 and the oil inlet holes 107. The lubrication grooves 108 can store lubricating oil, which can realize continuous lubrication and ensure the stable operation of the main shaft, and can lubricate the main shaft from multiple positions to reduce the friction between the main shaft and the copper sleeve.

[0026] When assembling the upper half sleeve 102 and the lower half sleeve 101, it is difficult to align the upper half sleeve 102 and the lower half sleeve 101 and install the connecting bolt 104, therefore, the positioning block 103 is fixed on the side wall of the upper half sleeve 102 close to the end face, and the positioning groove 1011 matched with the positioning block 103 is formed on the side wall of the lower half sleeve 101 close to the end face; during installation, the positioning block 103 of the upper half sleeve 102 is inserted into the positioning groove 1011 of the lower half sleeve 101, so that the upper half sleeve 102 and the lower half sleeve 101 are preliminarily connected, and then the connecting bolt 104 is screwed in, which has the advantage of improving the installation efficiency.

[0027] Since the lubricating oil enters the lubricating groove 108 through the oil inlet hole 107, the lubricating oil is initially in the middle position of the lubricating groove 108, so that the lubricating oil on both sides of the lubricating groove 108 is less, and in view of this problem, the groove 109 corresponding to the position of the oil inlet hole 107 is arranged on the inner wall of the lubricating groove 108; the lubricating oil can move to both sides along the groove 109 through the groove 109, so that the lubricating oil can fully enter the lubricating groove 108, and the uniformity of lubricating the main shaft is improved.

[0028] Further, the assembly groove 110 is formed on the inner wall of the upper half sleeve 102 and the lower half sleeve 101; when the copper sleeve is assembled on the main shaft, the assembly groove 110 can be used to limit the installation position of the copper sleeve, so as to improve the assembly precision of the copper sleeve.

[0029] Further, the annular flange is arranged at one end of the upper half sleeve 102 and the lower half sleeve 101; the annular flange limits the installation position of the copper sleeve from the side, so as to improve the assembly precision of the copper sleeve.

[0030] The existing copper sleeve has limited wear resistance and has a short service life, and in view of this problem, the PVD coating 111 is arranged on the inner wall of the upper half sleeve 102 and the lower half sleeve 101; by arranging the PVD coating 111, the wear resistance of the copper sleeve can be further improved, so as to prolong the service life of the copper sleeve.

[0031] It should be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or equipment.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A long life, low wear, corrosion resistant main shaft copper bushing comprising a bushing (1) characterized by: The shaft sleeve (1) is composed of an upper half sleeve (102) and a lower half sleeve (101), a plurality of avoiding grooves (1021) are formed on the outer wall of the upper half sleeve (102), a through hole (1022) is arranged in the avoiding groove (1021), a connecting bolt (104) is inserted into the through hole (1022), and the bottom of the connecting bolt (104) is screw-connected into a threaded hole (1012) formed on the surface of the lower half sleeve (101); The upper half sleeve (102) and the lower half sleeve (101) are both provided with an annular groove (105), a plurality of oil inlet grooves (106) are formed in the annular groove (105), an oil inlet hole (107) is formed in the oil inlet groove (106), and a plurality of lubricating grooves (108) in communication with the oil inlet hole (107) are formed in the interiors of the upper half sleeve (102) and the lower half sleeve (101).

2. The long life, low wear, corrosion resistant spindle brass bushing of claim 1, wherein: The side wall of the upper half sleeve (102) close to the end face is fixedly provided with a positioning block (103), and the side wall of the lower half sleeve (101) close to the end face is provided with a positioning groove (1011) matched with the positioning block (103).

3. The long life, low wear, corrosion resistant spindle brass bushing of claim 1, wherein: The inner wall of the lubricating groove (108) is provided with a groove (109) corresponding to the position of the oil inlet hole (107).

4. The long life, low wear, corrosion resistant bushing of claim 1, wherein: The inner walls of the upper half sleeve (102) and the lower half sleeve (101) are both provided with an assembling groove (110).

5. The long life, low wear, corrosion resistant spindle brass bushing of claim 1, wherein: One end of the upper half sleeve (102) and the lower half sleeve (101) is provided with an annular flange.

6. The long life, low wear, corrosion resistant bushing of claim 1, wherein: The inner walls of the upper half sleeve (102) and the lower half sleeve (101) are both provided with a PVD coating (111). The inner walls of the upper half sleeve (102) and the lower half sleeve (101) are both provided with a PVD coating (111).

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