Double-expansion-sleeve mechanism

Abstract

The utility model relates to the technical field of double expansion sleeves, and discloses a double expansion sleeve mechanism which comprises a base, an expansion sleeve assembly is arranged on the top of the base, and the bottom of the expansion sleeve assembly is fixedly connected to the bottom of the base. The base is arranged, the stability of the whole mechanism is improved, a part to be machined can be well fixed through the expansion sleeve assembly arranged at the top of the base, the situation that equipment is damaged and personnel are injured due to the fact that the part is not provided with a fixing column when the mechanism works is prevented, and the safety and reliability of the equipment are improved; through the balance column and the balance plate arranged on the outer surface of the expansion sleeve assembly, fixation of a part to be machined is greatly enhanced, the stability and balance of equipment are improved, through the heat dissipation holes formed in the top of the base, the equipment can be rapidly cooled, equipment damage or internal part aging caused by too high temperature is prevented, and the service life of the equipment is prolonged. The service life of the equipment is prolonged, the cost is greatly reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double expansion sleeves, in particular to a double expansion sleeve mechanism. Background Art

[0002] Machine tool processing refers to the process of using the machine tool to ensure the relative motion relationship between the tool and the fixture, and using the tool (or other tools) to process the workpiece installed on the fixture. However, this process is not necessarily a cutting process, it may also be a pressure process, such as knurling or spinning on a lathe. The workpiece needs to be clamped when it is processed. At present, there is a lack of convenient, fast and high-precision fixtures for clamping circular workpieces. In gear shaving and lathe fixtures, the machine tool's own pull rod is often used to drive the expansion sleeve mechanism to position and clamp the workpiece.

[0003] According to the published patent with the publication number CN206747727U, the utility model provides a centering expansion sleeve mechanism, including an expansion sleeve body with a hollow structure and a positioning sleeve, wherein the expansion sleeve body is sleeved on the positioning sleeve, and the hollow structure is a step hole, wherein the step hole includes a large end hole and a small end hole, wherein a protruding structure is provided on the outer wall of one end of the large end hole of the expansion sleeve body, and the expansion sleeve body and the positioning sleeve are transitionally matched, and the protruding structure part can be deformed, resulting in a reduced diameter, and generating a radial force, forcing the workpiece aperture to be concentric with the expansion sleeve mechanism, thereby playing a positioning role. At the same time, the diameter of the protruding structure is larger than the diameter of the inner hole of the workpiece, so that in the case of external force, the external force causes the expansion sleeve body to deform, and the diameter of the protruding structure becomes smaller, thereby allowing the workpiece to be loaded. In turn, the inner hole of the workpiece is tightened, thereby achieving the centering effect of the workpiece. The expansion sleeve mechanism has a simple structure, and can simultaneously meet the requirements of automatic positioning of the workpiece, thereby improving the production efficiency and processing quality of the workpiece, but there are still the following problems:

[0004] In some workpieces, due to the long axial dimension of the workpiece or the short length of the positioning hole, the existing expansion sleeve may not be able to simultaneously meet the positioning and clamping requirements of the workpiece, and another clamping mechanism needs to be set up. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a double expansion sleeve mechanism.

[0006] The utility model is implemented by the following technical solutions: a double expansion sleeve mechanism, comprising a base, a expansion sleeve assembly is arranged on the top of the base, and the bottom of the expansion sleeve assembly is fixedly connected to the bottom of the base;

[0007] The expansion sleeve assembly includes a support column, a fixed plate is sleeved on the outer surface of the support column, a bottom plate is fixedly connected to the top of the fixed plate, balance bolts are arranged on both sides of the bottom plate, a fixed plate is arranged on the top of the bottom plate, a fixed block is arranged on the top of the fixed plate, a dividing line is arranged on the top of the fixed block, a balance plate is arranged on the top of the dividing line, a balance column is arranged on one side of the balance plate, support rods are fixedly connected to both sides of the bottom of the fixed plate, the top of the support rod is fixedly connected to the top of the fixed plate, a circular pad is fixedly connected to the bottom of the support rod, the top of the circular pad is fixedly connected to the bottom end of the support rod, and the bottom of the circular pad is fixedly connected to the top of the base. .

[0008] As a further improvement of the above scheme, the support column is fixedly connected to the outer surface of one end of the bottom of the base with a fixing ring, a roller is arranged above the fixing ring, the support column is fixedly connected to the inner wall of the base through the roller, and four rollers are arranged.

[0009] As a further improvement of the above solution, the fixing plate, the bottom plate and the top and bottom of the fixing plate are all provided with through holes, and both sides of the bottom plate are fixedly connected with balancing bolts, and four balancing bolts are provided.

[0010] As a further improvement of the above scheme, four support rods are arranged at the bottom of the fixed plate, circular pads are arranged at the bottom of the support rods, and there are four circular pads. A through groove is arranged at the top of the support column, and through holes are arranged around the through groove, and there are four through holes.

[0011] As a further improvement of the above solution, a fixing block is fixedly connected to the outer surface of the support column, four fixing blocks are provided, two dividing lines are provided, two balancing plates are provided, and two balancing columns are provided.

[0012] As a further improvement of the above scheme, the outer surface of the base is provided with a heat dissipation hole, and there are two heat dissipation holes. A square hole groove is provided on one side of the heat dissipation hole, and a circular hole groove is provided below the square hole groove. A first telescopic shaft is provided around the outer surface of the base, one end of the first telescopic shaft is fixedly connected to the base, and the other end is sleeved with a second telescopic shaft, and the outer surface of the second telescopic shaft is provided with a thread.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model increases the stability of the overall mechanism by setting a base, and can well fix the parts to be processed by the expansion sleeve assembly arranged on the top of the base, thereby preventing damage to the equipment and injuries to personnel due to the lack of fixing columns for the parts when the mechanism is working, thereby improving the safety and reliability of the equipment, and the roller shaft arranged at the bottom is fixed to the support column through the roller shaft, which greatly strengthens the fixation of the base to the support column.

[0015] The utility model greatly strengthens the fixation of the parts to be processed and improves the stability and balance of the equipment by arranging the balance column and the balance plate on the outer surface of the expansion sleeve component. The equipment can be quickly cooled down through the heat dissipation holes arranged on the top of the base to prevent equipment damage or aging of internal parts due to excessive temperature, thereby increasing the service life of the equipment, greatly reducing costs and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the expansion sleeve structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the base of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the first telescopic shaft and the second telescopic shaft of the utility model.

[0020] Description of main symbols:

[0021] 1. Base; 2. Expansion sleeve assembly; 201. Support column; 202. Fixed plate; 203. Bottom plate; 204. Balance bolt; 205. Fixed plate; 206. Fixed block; 207. Dividing line; 208. Balance plate; 209. Balance column; 210. Support rod; 211. Round pad; 3. Fixed ring; 4. Roller; 5. Through groove; 6. Through hole; 7. Heat dissipation hole; 8. Square hole groove; 9. Round hole groove; 10. First telescopic axis; 11. Second telescopic axis; 12. Thread. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] Example:

[0024] Please combine Figure 1-4A double expansion sleeve mechanism of this embodiment includes a base 1, a expansion sleeve assembly 2 is arranged on the top of the base 1, and the bottom of the expansion sleeve assembly 2 is fixedly connected to the bottom of the base 1;

[0025] The expansion sleeve assembly 2 includes a support column 201, the outer surface of which is sleeved with a fixed disk 202, the top of the fixed disk 202 is fixedly connected to a base plate 203, both sides of the base plate 203 are provided with balancing bolts 204, the top of the base plate 203 is provided with a fixed plate 205, the top of the fixed plate 205 is provided with a fixed block 206, the top of the fixed block 206 is provided with a dividing line 207, the top of the dividing line 207 is provided with a balancing plate 208, and one side of the balancing plate 208 is provided with a balancing column 209, both sides of the bottom of the fixed disk 202 are fixedly connected with support rods 210, the top of the support rod 210 is fixedly connected to the top of the fixed disk 202, the bottom of the support rod 210 is fixedly connected with a circular pad 211, the top of the circular pad 211 is fixedly connected to the bottom end of the support rod 210, and the bottom of the circular pad 211 is fixedly connected to the top of the base 1.

[0026] The support column 201 is fixedly connected to the bottom of the base 1 , and a fixing ring 3 is fixedly connected to the outer surface of one end thereof. A roller 4 is arranged above the fixing ring 3 . The support column 201 is fixedly connected to the inner wall of the base 1 via the roller 4 . Four rollers 4 are arranged.

[0027] Through holes 6 are provided on the top and bottom of the fixing plate 202 , the bottom plate 203 and the fixing plate 205 . Balance bolts 204 are fixedly connected to both sides of the bottom plate 203 . Four balance bolts 204 are provided.

[0028] Four support rods 210 are arranged at the bottom of the fixed plate 202, and circular pads 211 are arranged at the bottom of the support rods 210. There are four circular pads 211. A through groove 5 is arranged at the top of the support column 201. There are four through holes 6 around the through groove 5.

[0029] The outer surface of the support column 201 is fixedly connected with a fixing block 206 , four fixing blocks 206 are provided, two dividing lines 207 are provided, two balancing plates 208 are provided, and two balancing columns 209 are provided.

[0030] The outer surface of the base 1 is provided with a heat dissipation hole 7, and there are two heat dissipation holes 7. A square hole groove 8 is provided on one side of the heat dissipation hole 7, and a circular hole groove 9 is provided below the square hole groove 8. A first telescopic shaft 10 is provided around the outer surface of the base 1. One end of the first telescopic shaft 10 is fixedly connected to the base 1, and the other end is sleeved with a second telescopic shaft 11. The outer surface of the second telescopic shaft 11 is provided with a thread 12.

[0031] The implementation principle of one of the embodiments of the present application is: through the first connecting shaft arranged around the base 1, the thread 12 arranged on the outer surface of the second connecting shaft is threadedly connected to the part to be measured, so as to fix the part to be measured, and the through groove 5 and the through hole 6 arranged on the top of the support column 201 are used to fix the part to be measured to improve the stability of the equipment during operation, and the fixing plate 205 arranged on the outer surface of the support column 201 prevents the equipment from being damaged during operation.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A double expansion sleeve mechanism, characterized in that: It comprises a base (1), the top of the base (1) is provided with an expansion sleeve assembly (2), and the bottom of the expansion sleeve assembly (2) is fixedly connected to the bottom of the base (1); The expansion sleeve assembly (2) comprises a support column (201), the outer surface of the support column (201) is sleeved with a fixing plate (202), the top of the fixing plate (202) is fixedly connected with a bottom plate (203), both sides of the bottom plate (203) are provided with balancing bolts (204), the top of the bottom plate (203) is provided with a fixing plate (205), the top of the fixing plate (205) is provided with a fixing block (206), the top of the fixing block (206) is provided with a dividing line (207), the top of the dividing line (207) is provided with a fixing block (206), and the top of the dividing line (207) is provided with a fixing block (206). A balancing plate (208) is provided at the bottom, a balancing column (209) is provided on one side of the balancing plate (208), support rods (210) are fixedly connected to both sides of the bottom of the fixed plate (202), the top of the support rod (210) is fixedly connected to the top of the fixed plate (202), the bottom of the support rod (210) is fixedly connected to a circular pad (211), the top of the circular pad (211) is fixedly connected to the bottom of the support rod (210), and the bottom of the circular pad (211) is fixedly connected to the top of the base (1).

2. A double expansion sleeve mechanism as claimed in claim 1, characterized in that: The support column (201) is fixedly connected to the bottom of the base (1), and the outer surface of one end thereof is fixedly connected to a fixing ring (3), a roller shaft (4) is arranged above the fixing ring (3), and the support column (201) is fixedly connected to the inner wall of the base (1) via the roller shaft (4), and four roller shafts (4) are arranged.

3. A double expansion sleeve mechanism as claimed in claim 1, characterized in that: The top and bottom of the fixing plate (202), the bottom plate (203) and the fixing plate (205) are all provided with through holes (6), and both sides of the bottom plate (203) are fixedly connected with balancing bolts (204), and four balancing bolts (204) are provided.

4. A double expansion sleeve mechanism as claimed in claim 1, characterized in that: Four support rods (210) are arranged at the bottom of the fixed plate (202), and circular pads (211) are arranged at the bottom of the support rods (210). There are four circular pads (211). A through groove (5) is arranged at the top of the support column (201), and through holes (6) are arranged around the through groove (5). There are four through holes (6).

5. A double expansion sleeve mechanism as claimed in claim 1, characterized in that: The outer surface of the support column (201) is fixedly connected with a fixing block (206), four fixing blocks (206) are provided, two dividing lines (207) are provided, two balancing plates (208) are provided, and two balancing columns (209) are provided.

6. A double expansion sleeve mechanism as claimed in claim 1, characterized in that: The outer surface of the base (1) is provided with a heat dissipation hole (7), two of which are provided, a square hole groove (8) is provided on one side of the heat dissipation hole (7), a circular hole groove (9) is provided below the square hole groove (8), a first telescopic shaft (10) is provided around the outer surface of the base (1), one end of the first telescopic shaft (10) is fixedly connected to the base (1), and the other end is sleeved with a second telescopic shaft (11), and the outer surface of the second telescopic shaft (11) is provided with a thread (12).

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