A turning fixture for centrifuge covers

Abstract

The utility model discloses a kind of turning fixing devices for centrifuge cover, the utility model relates to centrifuge cover processing technical field, and it includes: fixed shell, the top end inner wall of the fixed shell is slidably connected with top cover, the inner wall of the fixed shell is slidably connected with centrifuge cover, the inner wall of the top cover is slidably connected with fixed screw rod, the utility model is formed by setting layered compression structure of multiple components cooperation, device first utilizes pressing plate to form stable compression force in centrifuge cover middle position, in combination with the thread locking effect of fixed screw rod, fixed ring and tensioning block, provide stable clamping basis for big end outer circle and end face turning, avoid that part produces vibration due to clamping not firm in processing process, subsequent bottom circumferential limit is realized by the cooperation of limiting screw rod and limiting plate, further strengthen part fixing effect, ensure that inner hole turning stage is also without vibration knife phenomenon, guarantee the stable processing state of part from processing whole process.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge cover processing technology, specifically to a turning and fixing device for centrifuge covers. Background Technology

[0002] In the field of machining, the centrifuge lid is a key component of the centrifuge, and its machining quality directly affects the overall performance and operational stability of the centrifuge. With the rapid development of industrial technology, the requirements for the precision and surface quality of centrifuge lids are becoming increasingly stringent, and turning is an important step in ensuring its dimensional accuracy and surface roughness.

[0003] In the existing technology, when dealing with thin-walled centrifuge covers, traditional turning and fixing methods are prone to deformation due to uneven force on the thin walls and poor rigidity of the centrifuge covers. During the turning of the outer diameter and end face of the large end, the traditional fixing device cannot provide a sufficiently stable and uniform clamping force. As a result, the centrifuge cover vibrates due to insecure fixing during high-speed rotation turning, causing the tool to vibrate. This results in vibration marks on the machined surface, affecting the manufacturing of the centrifuge cover. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a turning and fixing device for a centrifuge lid, comprising: a fixing shell, a top cover slidably connected to the inner wall of the top of the fixing shell, a centrifuge lid slidably connected to the inner wall of the fixing shell, a fixing screw slidably connected to the inner wall of the top cover, a fixing ring symmetrically threaded to the outer wall of the fixing screw, a pressure plate provided at the bottom end of the fixing screw, a through hole provided at the center of the pressure plate, and a tensioning block slidably connected to the bottom end of the pressure plate.

[0005] Preferably, the bottom outer wall of the top cover is slidably connected to the top outer wall of the centrifuge cover, and the outer wall of the pressure plate is slidably connected to the inner wall of the centrifuge cover. The cast centrifuge cover is placed inside the fixed housing, and then the top cover is slidably installed onto the top inner wall of the fixed housing, ensuring a tight slidable connection between the bottom outer wall of the top cover and the top outer wall of the centrifuge cover. Then, a fixing screw is inserted through the inner wall of the top cover. Next, the pressure plate is fitted onto the bottom end of the fixing screw, fitting snugly against the inner wall of the centrifuge cover. A tensioning block is fitted onto the bottom outer wall of the fixing screw, bringing the tensioning block into contact with the bottom end of the pressure plate, thus completing the initial installation of the overall structure.

[0006] Preferably, the outer wall of the fixing screw is slidably connected to the inner wall of the tensioning block, and the outer walls of the top cover and the tensioning block are slidably connected to the outer wall of the fixing ring. The fixing screw passes through the center of the through hole. Fixing rings are symmetrically screwed into the outer wall of the fixing screw. The upper fixing ring slides against the top outer wall of the top cover, and the lower fixing ring slides against the bottom outer wall of the tensioning block. By tightening the two fixing rings, the threaded connection force between the fixing rings and the fixing screw creates a clamping force on the middle position of the centrifuge cover using the pressure plate. This clamping force in the middle provides a stable clamping for subsequent machining of the outer diameter and end face of the large end, preventing tool vibration.

[0007] Preferably, the bottom end of the fixed shell has a ring array of limiting holes, the inner wall of which is threaded with a limiting screw, and the outer wall of which is rotatably connected to a limiting plate. Screwing the limiting screw into the corresponding limiting hole moves the rotatably connected limiting plate until the inner wall of the limiting plate is in contact with the bottom outer wall of the centrifuge cover, thus completing the circumferential limiting of the bottom of the centrifuge cover and preventing displacement of the centrifuge cover during processing.

[0008] Preferably, the outer wall of the limiting plate is slidably connected to the outer wall of the fixed shell, and the outer wall of the limiting plate is slidably connected to the bottom outer wall of the centrifuge cover.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention solves the problem of vibration that easily occurs in the machining of thin-walled centrifuge covers by setting up a layered clamping structure formed by multiple sets of components. The device first uses a pressure plate to form a stable clamping force on the middle position of the centrifuge cover. Combined with the threaded locking effect of the fixing screw, fixing ring and tensioning block, it provides a stable clamping foundation for the turning of the outer circle and end face of the large end, avoiding vibration of the parts due to insecure clamping during the machining process. Subsequently, the bottom circumferential limit is achieved by the cooperation of the limiting screw and the limiting plate, which further enhances the fixing effect of the parts and ensures that there is no vibration during the inner hole turning stage. The stable machining state of the parts is guaranteed throughout the entire machining process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the centrifuge cover of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the tensioning block of this utility model;

[0015] Figure 5This is a schematic diagram of the bottom structure of this utility model.

[0016] In the diagram: 1. Fixed shell; 2. Top cover; 3. Centrifuge cover; 4. Fixed screw; 5. Pressure plate; 6. Tensioning block; 7. Fixed ring; 8. Limiting plate; 9. Limiting screw; 10. Limiting hole; 11. Perforation. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a turning and fixing device for a centrifuge cover, comprising: a fixing shell 1, a top cover 2 slidably connected to the inner wall of the top of the fixing shell 1, a centrifuge cover 3 slidably connected to the inner wall of the fixing shell 1, a fixing screw 4 slidably connected to the inner wall of the top cover 2, a fixing ring 7 symmetrically threaded to the outer wall of the fixing screw 4, a pressure plate 5 provided at the bottom end of the fixing screw 4, a through hole 11 provided at the center of the pressure plate 5, and a tensioning block 6 slidably connected to the bottom end of the pressure plate 5.

[0020] The bottom outer wall of the top cover 2 is slidably connected to the top outer wall of the centrifuge cover 3, and the outer wall of the pressure plate 5 is slidably connected to the inner wall of the centrifuge cover 3. The cast centrifuge cover 3 is placed inside the fixed shell 1, and then the top cover 2 is slidably installed onto the top inner wall of the fixed shell 1. Then, the fixing screw 4 is inserted through the inner wall of the top cover 2, so that the pressure plate 5 is sleeved on the bottom end of the fixing screw 4, ensuring that the outer wall of the pressure plate 5 is slidably fitted with the inner wall of the centrifuge cover 3, and the fixing screw 4 passes through the through hole 11 opened in the center of the pressure plate 5. A tensioning block 6 is sleeved on the bottom outer wall of the fixing screw 4, so that the tensioning block 6 contacts the bottom end of the pressure plate 5.

[0021] The outer wall of the fixing screw 4 is slidably connected to the inner wall of the tensioning block 6, and the outer walls of the top cover 2 and the tensioning block 6 are slidably connected to the outer wall of the fixing ring 7. The fixing screw 4 passes through the center of the through hole 11. The fixing rings 7 are symmetrically screwed into the outer wall of the fixing screw 4. The outer wall of the upper fixing ring 7 is slidably attached to the top outer wall of the top cover 2, and the outer wall of the lower fixing ring 7 is slidably attached to the bottom outer wall of the tensioning block 6. By tightening the two fixing rings 7, the threaded connection force between the fixing rings 7 and the fixing screw 4 is utilized to form a stable pressing force on the middle position of the inner wall of the centrifuge cover 3 by the outer wall of the pressure plate 5.

[0022] The bottom of the fixed shell 1 has a ring array of limiting holes 10. The inner wall of the limiting holes 10 is threaded with a limiting screw 9, and the outer wall of the limiting screw 9 is rotatably connected with a limiting plate 8.

[0023] The outer wall of the limiting plate 8 is slidably connected to the outer wall of the fixed shell 1, and the outer wall of the limiting plate 8 is slidably connected to the bottom outer wall of the centrifuge cover 3.

[0024] Working principle:

[0025] In use, first place the cast centrifuge cover 3 inside the fixed shell 1, then slide the top cover 2 onto the inner wall of the top of the fixed shell 1, ensuring that the outer wall of the bottom end of the top cover 2 is tightly slidably connected to the outer wall of the top end of the centrifuge cover 3. The top cover 2 not only provides a certain degree of coverage and protection for the top of the centrifuge cover 3, but also provides a guide structure for the installation of the fixing screw 4. Then, insert the fixing screw 4 through the inner wall of the top cover 2. Next, put the pressure plate 5 on the bottom end of the fixing screw 4, ensuring that the outer wall of the pressure plate 5 slides and fits against the inner wall of the centrifuge cover 3, and the fixing screw 4 passes through the through hole 11 in the center of the pressure plate 5. A tensioning block 6 is fitted on the outer wall of the bottom end of the fixing screw 4, so that the tensioning block 6 contacts the bottom end of the pressure plate 5. Then, screw the fixing screw 4 symmetrically into the outer wall. The upper fixed ring 7 slides against the outer wall of the top of the top cover 2, and the lower fixed ring 7 slides against the outer wall of the bottom of the tension block 6. By tightening the two fixed rings 7, the threaded connection force between the fixed rings 7 and the fixed screw 4 is used to form a stable clamping force on the middle position of the centrifuge cover 3 by the pressure plate 5. The middle clamping of the pressure plate 5 provides a stable clamping for subsequent turning of the outer diameter and end face of the large end, avoiding vibration. At this time, under the stable clamping state of the middle pressure plate 5, the outer diameter and end face of the large end of the centrifuge cover 3 are turned.

[0026] After the outer diameter and end face of the large end of the centrifuge cover 3 are machined, without removing the pressure plate 5, the limiting screw 9 is screwed into the corresponding limiting hole 10, thereby driving the limiting plate 8, which is rotatably connected to it, to move. This continues until the inner wall of the limiting plate 8 is in contact with the outer wall of the bottom end of the centrifuge cover 3, completing the circumferential limiting of the bottom of the centrifuge cover 3. This prevents the bottom of the centrifuge cover 3 from shifting during processing and provides stable clamping for the centrifuge cover 3. Then, the middle pressure plate 5 and related connecting components are removed, and the inner hole of the centrifuge cover 3 is machined.

[0027] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A turning and fixing device for a centrifuge lid, characterized in that, include: A fixed shell (1) is provided with a top cover (2) slidably connected to the inner wall of the top of the fixed shell (1), a centrifuge cover (3) slidably connected to the inner wall of the fixed shell (1), a fixing screw (4) slidably connected to the inner wall of the top cover (2), a fixing ring (7) symmetrically threaded to the outer wall of the fixing screw (4), a pressure plate (5) is provided at the bottom end of the fixing screw (4), a through hole (11) is provided at the center of the pressure plate (5), and a tensioning block (6) slidably connected to the bottom end of the pressure plate (5). The bottom end of the fixed shell (1) is provided with a ring array of limiting holes (10), the inner wall of the limiting holes (10) is threadedly connected to a limiting screw (9), and the outer wall of the limiting screw (9) is rotatably connected to a limiting plate (8). The outer wall of the limiting plate (8) is slidably connected to the outer wall of the fixed shell (1), and the outer wall of the limiting plate (8) is slidably connected to the bottom outer wall of the centrifuge cover (3).

2. The turning and fixing device for a centrifuge lid according to claim 1, characterized in that: The bottom outer wall of the top cover (2) is slidably connected to the top outer wall of the centrifuge cover (3), and the outer wall of the pressure plate (5) is slidably connected to the inner wall of the centrifuge cover (3).

3. The turning and fixing device for a centrifuge lid according to claim 1, characterized in that: The outer wall of the fixing screw (4) is slidably connected to the inner wall of the tensioning block (6), the outer walls of the top cover (2) and the tensioning block (6) are slidably connected to the outer wall of the fixing ring (7), and the fixing screw (4) passes through the center of the through hole (11).

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