Machining tool for roots flow meter

Abstract

The machining tool comprises a clamping sleeve used for being matched with a clamping jaw of a machine tool, two clamping blocks distributed in a bilateral symmetry mode are arranged in the clamping sleeve, and a clamping space used for containing a waist wheel is formed between the two clamping blocks. The side, away from the clamping space, of the clamping block is connected with the clamping sleeve through a limiting assembly, and the limiting assembly is used for preventing the clamping block from displacing in the axis direction of the clamping sleeve; the clamping device has the advantages that the waist wheel can be stably clamped, and the machining quality can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow meter processing, in particular to a processing tool for a Roots flow meter. Background Art

[0002] Roots flowmeter, also known as Roots flowmeter, is an instrument used to measure the volume flow of gas or liquid. It has the advantages of high precision, good reliability, light weight, low noise and long life.

[0003] The machining accuracy of the Roots flowmeter's pulley directly affects the accuracy of measurement, requiring high precision. The pulley requires clamping using a fixture. For example, the existing patent with publication number CN217668897U discloses a machining tool and a pulley contour machining device using the tool. By providing serrated grooves and serrated bars with a transversely inserted crossbeam, the pulley's position is fixed and clamped. However, in actual use, the lathe causes high-intensity vibration during machining, which can easily cause mechanical fatigue in parts such as the serrated grooves, serrated bars, T-shaped inserts, and springs, leading to damage. The stability of the clamping needs to be improved.

[0004] To this end, a pulley clamping tool, such as that disclosed in publication number CN220112367U, clamps the pulley with two clamping blocks. The clamping sleeve, retracted by the machine tool jaws, allows the two clamping blocks to fit more closely to the pulley, improving clamping stability. This technical solution lacks a positioning structure between the clamping sleeve and the clamping blocks. Before the machine tool jaws clamp the clamping sleeve, the clamping blocks may shift along the axis of the clamping sleeve, resulting in a failure to securely clamp the pulley. Furthermore, uneven force is applied to both sides of the pulley, affecting machining quality. Therefore, there is room for improvement. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a processing tool for a Roots flowmeter, which can stably clamp a waist wheel and help to ensure processing quality.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a processing tool for a Roots flowmeter, including a clamping sleeve for cooperating with a machine tool claw, two clamping blocks symmetrically distributed on the left and right are arranged in the clamping sleeve, and a clamping space for placing a waist wheel is formed between the two clamping blocks. The side of the clamping block away from the clamping space is connected to the clamping sleeve through a limit assembly, and the limit assembly is used to prevent the clamping block from being displaced along the axial direction of the clamping sleeve.

[0007] Preferably, a cavity is provided in the clamping block, and the cavity runs through the front and rear sides of the clamping block.

[0008] Preferably, a through hole is provided on the side of the clamping block away from the clamping space, and two arc-shaped holes are provided on the side of the clamping sleeve, and the two arc-shaped holes correspond one-to-one to the two through holes. The limiting assembly includes a limiting rod, a limiting plate and a locking piece, and one end of the limiting rod passes through the through hole and the arc-shaped hole and is fixedly connected to the limiting plate, and the other end of the limiting rod is connected to the locking piece.

[0009] Preferably, the other end of the limiting rod is provided with an internal threaded hole, and the locking member is a bolt, which is threadedly connected to the internal threaded hole.

[0010] Preferably, the locking member further comprises a connecting rope, one end of the connecting rope is connected to the head of the bolt, and the other end of the connecting rope is connected to the inner wall of the cavity.

[0011] Preferably, the other end of the limiting rod is provided with an annular groove, and the locking member is a clamp, which is sleeved on the annular groove.

[0012] Preferably, two arc-shaped grooves are provided on the side surfaces of the clamping sleeve, the arc-shaped holes are provided at the bottoms of the arc-shaped grooves, and the limiting plates are located in the arc-shaped grooves.

[0013] Preferably, the limiting plate is an arc-shaped plate.

[0014] Preferably, the clamping sleeve and the clamping block are both made of spring steel.

[0015] Preferably, a notch is provided on the side surface of the clamping sleeve, and the notch is located above the clamping space.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. By setting the limit assembly, the clamping block can be effectively positioned in the clamping sleeve to prevent the clamping block from moving along the axis of the clamping sleeve, ensuring that the clamping blocks are symmetrically distributed on both sides of the waist wheel to stably clamp the waist wheel, which helps to ensure the processing quality;

[0018] 2. Since the two clamps are symmetrically distributed and restricted by the limit assembly, the contact between the clamps and the waist pulley is more uniform, reducing the risk of deviation or damage caused by uneven force;

[0019] 3. Automatic alignment is achieved through limit components without manual adjustment, which helps to improve processing efficiency and is suitable for batch production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2It is a side structural diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the partial cross-sectional structure of the utility model Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the partial cross-sectional structure of the utility model Figure 2 .

[0024] In the figure: 1. Clamping sleeve; 11. Notch; 12. Arc-shaped hole; 13. Arc-shaped groove; 2. Clamping block; 21. Cavity; 22. Perforation; 3. Clamping space; 4. Limiting assembly; 41. Limiting rod; 411. Internal threaded hole; 412. Annular groove; 42. Limiting plate; 43. Locking piece; 431. Bolt; 432. Connecting rope; 433. Clamp; 5. Pulley. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Example 1: Figure 1 and Figure 2 As shown, a processing tool for a Roots flowmeter includes a clamping sleeve 1 for cooperating with a machine tool jaw (not shown in the figure), two clamping blocks 2 are arranged in a left-right symmetrical distribution, and a clamping space 3 for placing a waist pulley 5 is formed between the two clamping blocks 2. The side of the clamping block 2 away from the clamping space 3 is connected to the clamping sleeve 1 through a limit assembly 4, and the limit assembly 4 is used to prevent the clamping block 2 from being displaced along the axial direction of the clamping sleeve 1.

[0028] In this embodiment, the clamping sleeve 1 and the clamping block 2 are both made of spring steel, which has excellent elasticity and fatigue resistance.

[0029] In this embodiment, a notch 11 is provided on the side of the clamping sleeve 1. The notch 11 is located above the clamping space 3 and can bend to a certain extent when subjected to external force. The notch 11 is staggered with the limiting component 4 to avoid interference.

[0030] In this embodiment, the side of the clamping block 2 facing the clamping space 3 is a flat surface or a curved surface. When a curved surface is used, the curved surface is adapted to the side of the waist wheel 5 to be clamped, which helps to increase the contact surface between the clamping block 2 and the waist wheel 5, and the clamping effect is better.

[0031] Example 2: Figure 2 and Figure 3 As shown, the rest of the parts are the same as those in the first embodiment, except that a cavity 21 is provided in the clamping block 2 , and the cavity 21 passes through the front and rear sides of the clamping block 2 .

[0032] In this embodiment, a through-hole 22 is provided on the side of the clamping block 2 away from the clamping space 3. Two arc-shaped holes 12 are provided on the side of the clamping sleeve 1, and the two arc-shaped holes 12 correspond one-to-one with the two through-holes 22. The limiting assembly 4 includes a limiting rod 41, a limiting plate 42, and a locking member 43. One end of the limiting rod 41 passes through the through-hole 22 and the arc-shaped hole 12 and is fixedly connected to the limiting plate 42. The other end of the limiting rod 41 is connected to the locking member 43. This structural design allows the clamping block 2 to move a certain distance in the circumferential direction and a certain distance along the length of the limiting rod 41, but cannot move along the axial direction of the clamping sleeve 1.

[0033] Example 3: Figure 2 and Figure 3 As shown, the rest of the parts are the same as those in the second embodiment, except that an internal threaded hole 411 is provided at the other end of the limiting rod 41 , and the locking member 43 is a bolt 431 , which is threadedly connected to the internal threaded hole 411 .

[0034] Furthermore, the locking member 43 also includes a connecting rope 432, one end of the connecting rope 432 is connected to the head of the bolt 431, and the other end of the connecting rope 432 is connected to the inner wall of the cavity 21, so as to prevent the bolt 431 from separating from the clamping block 2, thereby facilitating use.

[0035] Example 4: Figure 2 and Figure 4 As shown, the rest of the parts are the same as those in the second embodiment, except that an annular groove 412 is provided at the other end of the limiting rod 41 , and the locking member 43 is a clamp 433 , which is sleeved on the annular groove 412 .

[0036] Example 5: Figure 1 and Figure 3 As shown, the rest of the parts are the same as those of the second embodiment, except that two arcuate grooves 13 are provided on the side of the clamping sleeve 1, and arcuate holes 12 are provided at the bottom of the arcuate grooves 13. The limit plates 42 are located in the arcuate grooves 13. This prevents the limit plates 42 from protruding from the clamping sleeve 1. When the clamping sleeve 1 is clamped on the machine tool jaws, the limit plates 42 will not collide with the machine tool jaws and be damaged, thereby improving reliability.

[0037] Furthermore, the limiting plate 42 is an arc-shaped plate, and its curvature is adapted to the clamping sleeve 1 .

[0038] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A processing tool for a Roots flowmeter, comprising a clamping sleeve (1) for cooperating with a machine tool jaw, wherein two clamping blocks (2) are arranged in a left-right symmetrical distribution in the clamping sleeve (1), and a clamping space (3) for placing a waist wheel is formed between the two clamping blocks (2), characterized in that The side of the clamping block (2) away from the clamping space (3) is connected to the clamping sleeve (1) via a limiting assembly (4), and the limiting assembly (4) is used to prevent the clamping block (2) from being displaced along the axial direction of the clamping sleeve (1).

2. A processing tool for a Roots flowmeter according to claim 1, characterized in that A cavity (21) is provided in the clamping block (2), and the cavity (21) runs through the front and rear side surfaces of the clamping block (2).

3. A processing tool for a Roots flowmeter according to claim 2, characterized in that A through hole (22) is provided on the side of the clamping block (2) away from the clamping space (3), and two arc-shaped holes (12) are provided on the side of the clamping sleeve (1), and the two arc-shaped holes (12) correspond one to one with the two through holes (22). The limiting assembly (4) includes a limiting rod (41), a limiting plate (42) and a locking piece (43), and one end of the limiting rod (41) passes through the through hole (22) and the arc-shaped hole (12) and is fixedly connected to the limiting plate (42), and the other end of the limiting rod (41) is connected to the locking piece (43).

4. A processing tool for a Roots flowmeter according to claim 3, characterized in that The other end of the limiting rod (41) is provided with an internal threaded hole (411), and the locking member (43) is a bolt (431), and the bolt (431) is threadedly connected to the internal threaded hole (411).

5. A processing tool for a Roots flowmeter according to claim 4, characterized in that The locking member (43) further includes a connecting rope (432), one end of which is connected to the head of the bolt (431), and the other end of which is connected to the inner wall of the cavity (21).

6. A processing tool for a Roots flowmeter according to claim 3, characterized in that The other end of the limiting rod (41) is provided with an annular groove (412), and the locking member (43) is a clamp (433), and the clamp (433) is sleeved on the annular groove (412).

7. A processing tool for a Roots flowmeter according to claim 3, characterized in that Two arc-shaped grooves (13) are provided on the side of the clamping sleeve (1), the arc-shaped hole (12) is provided at the bottom of the arc-shaped groove (13), and the limiting plate (42) is located in the arc-shaped groove (13).

8. A processing tool for a Roots flowmeter according to claim 7, characterized in that The limiting plate (42) is an arc-shaped plate.

9. The processing tool for Roots flowmeter according to claim 1, characterized in that The clamping sleeve (1) and the clamping block (2) are both made of spring steel.

10. The processing tool for Roots flowmeter according to claim 1, characterized in that A notch (11) is provided on the side of the clamping sleeve (1), and the notch (11) is located above the clamping space (3).

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