Rotary chuck seat
By setting an alternative copper sleeve between the cylinder liner and the body of the traditional chuck seat, the problem of the gap between the cylinder liner and the body is solved, preventing gas leakage, enhancing structural stability, and reducing friction through the copper sleeve, improving part accuracy and machine tool rotation speed.
Patent Information
- Application Number
- CN202422242057.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-13
AI Technical Summary
After long-term use of traditional chuck seats, the gap between the cylinder liner and the body becomes larger, resulting in loosening of the parts, leaking internal gas, poor structural stability, low precision of the parts produced, and inability to rotate at high speed.
A rotary chuck seat is designed, by providing an alternative copper sleeve between the cylinder liner and the body, a channel connecting the cylinder liner and the body is provided in the copper sleeve to provide gas circulation, prevent internal gas leakage, and reduce friction through the copper sleeve and increase rotation speed.
Without affecting the operation of the chuck seat, the copper sleeve is replaced separately without the cylinder sleeve to prevent internal gas leakage, enhance structural stability, improve part accuracy, and increase the speed of the machine tool due to the low friction characteristics of the copper sleeve.
Smart Images
Figure CN223029090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling fixtures, and more specifically, to a rotary chuck seat. Background Art
[0002] During the use of machine tools such as lathes, milling machines, and grinding machines, it is necessary to install an auxiliary device on the machine tool specifically for clamping parts and then processing the parts, which is called a chuck seat. The traditional chuck seat has the following problems: First, the cylinder sleeve is sleeved on the body, a gas joint is connected to the cylinder sleeve, a channel for gas flow is communicated between the cylinder sleeve and the body, the body rotates while the cylinder sleeve does not rotate, so it is easy for friction and collision to occur between the body and the steel sleeve, damaging the parts and reducing the service life of the parts. After long-term use, the gap between the cylinder sleeve and the body becomes larger, resulting in loosening of the parts, internal gas leakage, poor structural stability, and low precision of the processed parts, while the cost of replacing the cylinder sleeve is relatively high; Second, the cylinder sleeve and the body are usually made of iron, and the friction coefficient between iron and iron is relatively high, affecting the rotation speed of the body and unable to rotate at high speed. Summary of the Utility Model
[0003] To solve at least one of the above problems, the utility model provides a rotary chuck seat, which includes a body, a cylinder sleeve, and a replaceable copper sleeve. The copper sleeve is sleeved on the body, the cylinder sleeve is sleeved on the copper sleeve, and a channel communicating the cylinder sleeve and the body is provided in the copper sleeve.
[0004] Optionally, it further includes a top cover and a first bolt. The top cover and the body are connected by the first bolt, and the top cover covers above the copper sleeve.
[0005] Optionally, a ring-shaped first accommodation cavity is formed by the cooperation of the outer side walls of the top cover, the copper sleeve, the cylinder sleeve, and the body. A first bearing is accommodated in the first accommodation cavity. The first bearing is sleeved on the body, and the first bearing abuts against the upper end of the copper sleeve.
[0006] Optionally, a ring-shaped second accommodation cavity is formed by the cooperation of the copper sleeve, the cylinder sleeve, and the body. A second bearing is accommodated in the second accommodation cavity. The second bearing is sleeved on the body, and the second bearing abuts against the lower end of the copper sleeve.
[0007] Optionally, the copper sleeve is provided with an exhaust hole that penetrates up and down. The exhaust hole communicates the first accommodation cavity and the second accommodation cavity to balance the air pressure and prevent it from affecting the rotation speed.
[0008] Optionally, the materials of the body and the cylinder sleeve are both iron, and the material of the copper sleeve is copper.
[0009] Optionally, a first through hole and a second through hole are provided on the cylinder liner, a first flow channel and a second flow channel are provided in the main body, a first channel and a second channel are provided in the copper sleeve, and the first through hole and the first flow channel are communicated through the first channel, and the second through hole and the second flow channel are communicated through the second channel.
[0010] Optionally, the first channel and the second channel are coaxially arranged on the copper sleeve, and the first channel and the second channel are spaced apart in the up and down direction.
[0011] Optionally, both the first channel and the second channel are formed by recesses on the inner wall of the copper sleeve.
[0012] Optionally, it further includes a base and a second bolt. The main body and the base are connected by the second bolt. A third flow channel communicating with the second flow channel is provided in the base. A limiting cavity is formed between the main body and the base. A piston that moves up and down is accommodated in the limiting cavity. The upper and lower ends of the limiting cavity are respectively communicated with the first flow channel and the third flow channel. The first flow channel is used to push the piston downward, and the third flow channel is used to push the piston upward.
[0013] Compared with the prior art, in the rotary chuck base of the present utility model, by providing a replaceable copper sleeve between the cylinder liner and the main body, the copper sleeve can be replaced separately without replacing the cylinder liner after long-term use. Channels communicating the cylinder liner and the main body are provided in the copper sleeve for gas circulation. Without affecting the operation of the chuck base, the cylinder liner and the main body can be separated to prevent internal gas leakage, enhance structural stability, and make the processed parts have higher precision. The copper sleeve is made of copper, and the friction coefficient between copper and iron is lower than that between iron and iron. Therefore, the main body is subjected to less friction when rotating and has a faster rotation speed. Description of the Drawings
[0014] Figure 1 is a structural diagram of the rotary chuck base according to an embodiment of the present utility model;
[0015] Figure 2 is a cross-sectional view of the rotary chuck base according to an embodiment of the present utility model;
[0016] Figure 3 is an exploded view of the rotary chuck base according to an embodiment of the present utility model;
[0017] Figure 4 is a structural diagram of the copper sleeve according to an embodiment of the present utility model;
[0018] Figure 5 is a cross-sectional view of the copper sleeve according to an embodiment of the present utility model.
[0019] Description of the Reference Numerals:
[0020] 1. Top cover; 2. First bearing; 3. Copper sleeve; 31. First channel; 32. Second channel; 33. Exhaust hole; 4. Cylinder sleeve; 41. First through hole; 42. Second through hole; 5. Second bearing; 6. Body; 61. First flow channel; 62. Second flow channel; 7. Limiting cavity; 71. Piston; 8. Base; 81. Third flow channel; 9. Sealing ring. Detailed implementation mode
[0021] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship when the product is in normal use.
[0023] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.
[0024] An embodiment of the present utility model provides a rotary chuck base, as shown in combination with Figures 1-5 shown, including a body 6, a cylinder sleeve 4 and a replaceable copper sleeve 3. The copper sleeve 3 is sleeved on the body 6, the cylinder sleeve 4 is sleeved on the copper sleeve 3, and a channel communicating the cylinder sleeve 4 and the body 6 is provided inside the copper sleeve 3.
[0025] In the rotary chuck base of the present utility model, by providing a replaceable copper sleeve 3 between the cylinder sleeve 4 and the body 6, the copper sleeve 3 can be replaced alone without replacing the cylinder sleeve 4 after long-term use. A channel communicating the cylinder sleeve 4 and the body 6 is provided inside the copper sleeve 3, allowing gas to flow through. Without affecting the operation of the chuck base, the cylinder sleeve 4 and the body 6 can be separated to prevent internal gas leakage, enhance structural stability, and make the processed parts have higher precision. The copper sleeve 3 is made of copper, and the friction coefficient between copper and iron is lower than that between iron and iron. Therefore, the body 6 is subjected to less friction when rotating and has a faster rotation speed.
[0026] The rotary chuck base further includes a top cover 1 and a first bolt (not shown). The top cover 1 and the body 6 are connected by the first bolt, and the top cover 1 covers the upper part of the copper sleeve 3.
[0027] As Figure 1 and 2 shown, in this embodiment, the top cover 1 rotates together with the body 6, and the top cover 1 is limited above by the body 6, the cylinder sleeve 4 and the copper sleeve 3.
[0028] An annular first accommodation cavity is formed by the cooperation of the outer side walls of the top cover 1, the copper sleeve 3, the cylinder sleeve 4, and the body 6. A first bearing 2 is accommodated in the first accommodation cavity. The first bearing 2 is sleeved on the body 6, and the upper end of the first bearing 2 abuts against the copper sleeve 3.
[0029] As Figure 2 shown, in this embodiment, the inner side wall of the first bearing 2 is in abutting connection with the body 6. The first bearing 2 and the top cover 1 cooperate with each other to be jointly limited above the cylinder sleeve 4 to prevent the cylinder sleeve 4 from moving upward.
[0030] An annular second accommodation cavity is formed by the cooperation of the copper sleeve 3, the cylinder sleeve 4, and the body 6. A second bearing 5 is accommodated in the second accommodation cavity. The second bearing 5 is sleeved on the body 6, and the lower end of the second bearing 5 abuts against the copper sleeve 3.
[0031] As Figure 2 shown, in this embodiment, the inner side wall of the second bearing 5 is in abutting connection with the body 6. Both the first bearing 2 and the second bearing 5 are rotatable. The first bearing 2 and the second bearing 5 are respectively limited above and below the copper sleeve 3 in the vertical direction to make the structure more stable.
[0032] The copper sleeve 3 is provided with an exhaust hole 33 that penetrates up and down. The exhaust hole 33 communicates the first accommodation cavity and the second accommodation cavity to balance the air pressure and prevent it from affecting the rotation speed.
[0033] As Figure 5 shown, in this embodiment, the exhaust hole 33 is not communicated with the channel. The exhaust hole 33 is used to balance the air pressure in the first accommodation cavity and the second accommodation cavity to prevent the unbalanced air pressure generated during the rotation of the body 6 from affecting the rotation speed.
[0034] The materials of the body 6 and the cylinder sleeve 4 are both iron, and the material of the copper sleeve 3 is copper.
[0035] As Figure 2 shown, the friction coefficient between iron and iron is about 0.6 - 0.7 without lubricant, and the friction coefficient between iron and copper is about 0.2 without lubricant. In this way, the friction force received by the body 6 during rotation is smaller, the rotation speed is faster, and copper has good high-temperature resistance and can withstand the heat generated during the high-speed rotation of the body 6.
[0036] The cylinder sleeve 4 is provided with a first through hole 41 and a second through hole 42. The body 6 is provided with a first flow channel 61 and a second flow channel 62. The channel includes a first channel 31 and a second channel 32. The first through hole 41 and the first flow channel 61 are communicated through the first channel 31, and the second through hole 42 and the second flow channel 62 are communicated through the second channel 32.
[0037] Taking the direction shown as an example, in this embodiment, the external gas enters the collet base through the first through hole 41, flows through the first channel 31 and then enters the first flow channel 61 to provide a driving force for the downward movement of the piston 71 in the body 6. The external gas enters the collet base through the second through hole 42, flows through the second channel 32 and then enters the second flow channel 62 to provide a driving force for the upward movement of the piston 71 in the body 6. Figure 2 Taking the direction shown as an example, in this embodiment, the external gas enters the collet base through the first through hole 41, flows through the first channel 31 and then enters the first flow channel 61 to provide a driving force for the downward movement of the piston 71 in the body 6. The external gas enters the collet base through the second through hole 42, flows through the second channel 32 and then enters the second flow channel 62 to provide a driving force for the upward movement of the piston 71 in the body 6.
[0038] The first channel 31 and the second channel 32 are coaxially arranged on the copper sleeve 3, and the first channel 31 and the second channel 32 are spaced apart in the up and down direction.
[0039] Taking Figure 4 and 5 shown as an example, in this embodiment, the projections of the first channel 31 and the second channel 32 in the up and down direction coincide, with a simple and stable structure and being convenient for processing.
[0040] Both the first channel 31 and the second channel 32 are formed by depressions on the inner wall of the copper sleeve 3.
[0041] Taking Figure 4 shown as an example, in this embodiment, such a setting makes the processing more convenient. The first channel 31 and the second channel 32 are closer to the body 6, resulting in a better internal sealing effect and being not easily leaky.
[0042] It further includes a base 8 and a second bolt (not shown). The body 6 and the base 8 are connected by the second bolt. A third flow channel 81 communicating with the second flow channel 62 is provided in the base 8. A limiting cavity 7 is formed between the body 6 and the base 8. A vertically movable piston 71 is accommodated in the limiting cavity 7. The upper and lower ends of the limiting cavity 7 are respectively communicated with the first flow channel 61 and the third flow channel 81. The first flow channel 61 is used to push the piston 71 downward, and the third flow channel 81 is used to push the piston 71 upward.
[0043] Taking Figure 2 shown as an example, in this embodiment, the outlet of the first flow channel 61 is located above the piston 71, and the outlet of the third flow channel 81 is located below the piston 71. A plurality of sealing rings 9 are provided between the limiting cavity 7 and the piston 71 to achieve internal sealing. A driving device (not shown) is connected to the lower end of the base 8, and the driving device drives the base 8, the body 6, the piston 71 and the top cover 1 to rotate together.
[0044] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.
Claims
1. A rotary chuck seat, characterized in that: The invention comprises a body (6), a cylinder sleeve (4) and a replaceable copper sleeve (3), wherein the copper sleeve (3) is sleeved on the body (6), the cylinder sleeve (4) is sleeved on the copper sleeve (3), and a channel is provided in the copper sleeve (3) for connecting the cylinder sleeve (4) and the body (6).
2. The rotary chuck seat according to claim 1, characterized in that: It also comprises a top cover (1) and a first bolt, wherein the top cover (1) and the body (6) are connected via the first bolt, and the top cover (1) is arranged above the copper sleeve (3).
3. The rotary chuck seat according to claim 2, characterized in that: The top cover (1), the copper sleeve (3), the cylinder sleeve (4) and the outer side wall of the body (6) cooperate to form an annular first accommodating cavity, wherein a first bearing (2) is accommodated in the first accommodating cavity, the first bearing (2) is sleeved on the body (6), and the first bearing (2) is in contact with the upper end of the copper sleeve (3).
4. The rotary chuck seat according to claim 3, characterized in that: The copper sleeve (3), the cylinder sleeve (4) and the body (6) cooperate to form an annular second accommodating cavity, wherein a second bearing (5) is accommodated in the second accommodating cavity. The second bearing (5) is sleeved on the body (6), and the second bearing (5) abuts against the lower end of the copper sleeve (3).
5. The rotary chuck seat according to claim 4, characterized in that: The copper sleeve (3) is provided with an exhaust hole (33) which passes through from top to bottom, and the exhaust hole (33) communicates with the first accommodating chamber and the second accommodating chamber to balance the air pressure and prevent the rotation speed from being affected.
6. The rotary chuck seat according to claim 1, characterized in that: The body (6) and the cylinder sleeve (4) are both made of iron, and the copper sleeve (3) is made of copper.
7. The rotary chuck seat according to any one of claims 1 to 6, characterized in that: The cylinder sleeve (4) is provided with a first through hole (41) and a second through hole (42), the body (6) is provided with a first flow channel (61) and a second flow channel (62), the copper sleeve (3) is provided with a first channel (31) and a second channel (32), the first through hole (41) and the first flow channel (61) are connected via the first channel (31), and the second through hole (42) and the second flow channel (62) are connected via the second channel (32).
8. The rotary chuck seat according to claim 7, characterized in that: The first channel (31) and the second channel (32) are coaxially arranged on the copper sleeve (3), and the first channel (31) and the second channel (32) are spaced apart in the up-down direction.
9. The rotary chuck seat according to claim 7, characterized in that: The first channel (31) and the second channel (32) are both formed by depressions in the inner wall of the copper sleeve (3).
10. The rotary chuck seat according to claim 7, characterized in that: The invention also comprises a base (8) and a second bolt, wherein the body (6) and the base (8) are connected via the second bolt, a third flow channel (81) connected to the second flow channel (62) is provided in the base (8), a limiting cavity (7) is formed between the body (6) and the base (8), a piston (71) that moves up and down is accommodated in the limiting cavity (7), the upper and lower ends of the limiting cavity (7) are respectively connected to the first flow channel (61) and the third flow channel (81), the first flow channel (61) is used to push the piston (71) to move downward, and the third flow channel (81) is used to push the piston (71) to move upward.