Structure for reducing turning noise of camshaft

Abstract

The utility model relates to the technical field of camshaft turning, in particular to a structure for reducing camshaft turning noise, which comprises a wedge block, an inclined pressing plate is arranged at the bottom of the wedge block, a cutter bar is arranged below the inclined pressing plate, a cutter bar cutter mounting back surface is arranged at the top of the cutter bar, and an inclined pressing plate lower end surface is arranged on the lower end surface of the inclined pressing plate. The side face of the inclined pressing plate is fixedly connected with a tool turret through a bolt, the front face of the tool turret is provided with a tool turret front end face, the back face of the inclined pressing plate is provided with an inclined pressing plate back face, a certain gap is formed between the inclined pressing plate back face and the tool turret front end face, and the back face of the wedge block is provided with a wedge block back face. The blade and cutter bar noise reduction device is simple in implementation structure, high in practicability, obvious in noise reduction effect and capable of guaranteeing that the noise of the working environment of the blade and cutter bar noise reduction device meets the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft turning processing, in particular to a structure for reducing camshaft turning processing noise. Background Art

[0002] The rough turning process of the camshaft mainly uses grooving cutters and turning tools for cutting. Due to the large machining allowance and large workpiece runout, there is generally large vibration during turning, which produces harsh noise. The normal noise reaches 102dB, which has always been a problem of environmental noise that has plagued the company. Several projects have been launched to solve this problem, but with no good results.

[0003] The existing original machined tool bars are all installed normally, and the extended length is determined according to the cutting depth of the camshaft. There is no clamping block on the tool bar head, but when the cutting allowance is large, the vibration is large, and loud noise is generated, which seriously pollutes the surrounding working environment. Utility Model Content

[0004] The purpose of the utility model is to provide a structure to reduce the noise of camshaft turning processing in view of the deficiencies of the above-mentioned prior art, solve the problem that the existing original turning tool rods are all normally installed, the extended length is determined according to the cutting depth of the camshaft, and the tool rod head is not pressed with a clamping block, but when the turning cutting allowance is large, the vibration is large, and the noise is large, which seriously pollutes the surrounding working environment, and meets the company's environmental protection requirements (noise is less than 85dB).

[0005] The technical solution of the utility model is as follows: a structure for reducing the noise of camshaft turning processing, comprising a wedge block, a ramp pressure plate is provided at the bottom of the wedge block, a tool rod is provided below the ramp pressure plate, a tool rod tool mounting back side is provided at the top of the tool rod, a ramp pressure plate lower end face is provided at the ramp pressure plate lower end face, and a tool tower is fixedly connected to the side of the ramp pressure plate by bolts, a tool tower front end face is provided at the front of the tool tower, a ramp pressure plate back side is provided at the back of the ramp pressure plate, a certain gap is provided between the back of the ramp pressure plate and the front end face of the tool tower, and a wedge block back side is provided at the back of the wedge block.

[0006] In the above scheme, the space between the turret and the back of the tool bar where the tool is mounted is utilized, and the tool bar is pressed by installing a pressure block to reduce the vibration of the tool bar and the blade, thereby achieving the purpose of reducing noise.

[0007] As a preferred technical solution of the utility model, the taper of the wedge block is 5-10°, which is consistent with the angle of the inclined pressure plate, has a certain self-locking property, and effectively utilizes the spatial height between the turret and the back of the tool bar where the tool is mounted.

[0008] In the above scheme, the lower end surface of the inclined pressure plate is in close contact with the back of the tool bar where the tool is mounted, ensuring that the front end of the tool bar can be effectively pressed and reducing the generation of vibration.

[0009] As a preferred technical solution of the utility model, the lower end surface of the inclined pressure plate is in close contact with the back surface of the tool bar where the tool is mounted.

[0010] As a preferred technical solution of the utility model, after the inclined pressure plate is pressed, there is a certain gap between the back side of the inclined pressure plate and the front end face of the turret, and the gap is 1 to 2 mm.

[0011] The pressure block is used to press the front end of the tool rod to reduce the vibration of the tool rod and blade, and the noise is reduced to 79.5dB, which meets the environmental protection standard of 85dB, and at the same time increases the service life of the tool rod and blade by more than %.

[0012] As a preferred technical solution of the utility model, after the wedge block is pressed, the back side of the wedge block is in close contact with the front end face of the turret. In the above solution, the back side of the wedge block is in close contact with the front end face of the turret, and there is a certain gap between the back side of the inclined pressure plate and the front end face of the turret. According to the different heights of the space between the turret and the back side of the tool bar with the tool, the height of the pressure block combination is ensured to have a certain adjustment range, thereby ensuring that the pressure block can be pressed tightly against the back side of the tool bar with the tool.

[0013] As a preferred technical solution of the utility model, the wedge block and the inclined pressure plate are combined into a pressure block.

[0014] Beneficial effect: The utility model uses the space between the turret and the back of the tool bar to install a pressure block to press the tool bar, reduce the vibration of the tool bar and the blade, and thus achieve the purpose of reducing noise. The back of the wedge block is close to the front end face of the turret, and there is a certain gap between the back of the inclined pressure plate and the front end face of the turret; according to the different heights of the space between the turret and the back of the tool bar, the height of the pressure block combination is adjusted to a certain extent, so as to ensure that the pressure block can be pressed against the back of the tool bar, and the pressure block is used to press the front end of the tool bar to reduce the vibration of the tool bar and the blade, and the noise is reduced to 79.5dB, meeting the environmental protection requirements. The standard 85dB requirement is met, and the service life of the tool bar and the blade is increased by more than 30%. This processing method adopts corresponding vibration reduction measures based on the principle of noise generation (vibration generation), which significantly reduces the noise and meets the industrial environmental protection standards. The principle of this method is scientific and reasonable, and at the same time it increases the service life of the tool bar and the blade, changes the original conventional tool installation method, and solves the problem of excessive noise that has plagued the company for a long time. The processing method of the utility model only needs to add a wedge-shaped combined pressure block, which is low in cost and has obvious effect, and provides a solution to the noise problem generated by turning processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of a pressure block (applicable to a convex back of a tool bar: a combination of a wedge block 1 and an inclined pressure plate 2);

[0017] Figure 3 It is a schematic diagram of a pressure block (applicable to a tool bar with a flat back: a combination of a wedge block 1 and an inclined pressure plate 2).

[0018] Numbers in the figure: 1, wedge; 2, inclined pressure plate; 3, lower end face of inclined pressure plate; 4, back side of tool bar where tool is mounted; 5, tool bar; 6, back side of wedge; 7, back side of inclined pressure plate; 8, front end face of turret; 9, turret; 10, bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 The utility model provides a structure for reducing the noise of camshaft turning processing, including a wedge block 1, a ramp pressure plate 2 is provided at the bottom of the wedge block 1, a tool rod 5 is provided below the ramp pressure plate 2, a tool rod tool mounting back side 4 is provided at the top of the tool rod 5, a ramp pressure plate lower end face 3 is provided below the ramp pressure plate 2, and a tool tower 9 is fixedly connected to the side of the ramp pressure plate 2 by bolts 10, a tool tower front end face 8 is provided in front of the tool tower 9, a ramp pressure plate back side 7 is provided on the back of the ramp pressure plate 2, a certain gap is provided between the ramp pressure plate back side 7 and the tool tower front end face 8, and a wedge block back side 6 is provided on the back of the wedge block 1.

[0021] In summary, by installing the pressure block to press the tool bar 5, the vibration of the tool bar and the blade is reduced, thereby achieving the purpose of reducing noise. The back side 6 of the wedge block is close to the front end face 8 of the turret, and there is a certain gap between the back side 7 of the inclined pressure plate and the front end face 8 of the turret; according to the different spatial heights of the turret 9 and the back side 4 of the tool bar, the height of the pressure block combination is guaranteed to have a certain adjustment range, so as to ensure that the pressure block can be pressed against the back side 4 of the tool bar, and the front end of the tool bar 5 is pressed by the pressure block to reduce the vibration of the tool bar 5 and the blade, and the noise is reduced to 79.5dB, which meets the environmental protection standard 85d B requirement, and at the same time, the service life of the tool rod 5 and the blade is increased by more than 30%. This processing method adopts corresponding vibration reduction measures based on the principle of noise generation (vibration generation), which significantly reduces the noise and meets the industrial environmental protection standards. The principle of this method is scientific and reasonable, and at the same time, the service life of the tool rod 5 and the blade is increased, which solves the problem that the existing original machined tool rod 5 is installed normally, and the extended length is determined according to the cutting depth of the camshaft. The head of the tool rod 5 is not pressed with a clamp, but when the cutting allowance is large, the vibration is large, and a large noise is generated, which seriously pollutes the surrounding working environment.

[0022] The taper of the wedge block 1 is 5 to 10°, which is consistent with the angle of the inclined pressure plate 2 and has a certain self-locking property. The lower end face 3 of the inclined pressure plate is in close contact with the back side 4 of the tool bar. After the inclined pressure plate 2 is tightened, there is a certain gap between the back side 7 of the inclined pressure plate and the front end face 8 of the turret. The gap is 1 to 2 mm. After the wedge block 1 is tightened, the back side 6 of the wedge block is in close contact with the front end face 8 of the turret. The wedge block 1 and the inclined pressure plate 9 are combined into a pressing block.

[0023] Example 1: Figure 1 As shown, in the camshaft turning process, a pressure block (a combination of a wedge block 1 and an inclined pressure plate 2) is added to the tool mounting back side 4 of the tool bar 5; first install the wedge block 1 so that its back side 6 is close to the front end face 8 of the turret, and then install the inclined pressure plate 2, and then lock it with bolts 10. Through the angle coordination of the wedge block 1 and the inclined pressure plate 2, the lower end face 3 of the inclined pressure plate is closely fitted with the tool mounting back side 4 of the tool bar, thereby reducing the vibration of the tool bar 5 and the blade, thereby reducing noise.

[0024] Embodiment 2: Based on Embodiment 1, the taper α° of the wedge block 1 is 5 to 10°, which is consistent with the angle of the inclined pressure plate 2; this angle ensures a certain self-locking property, while ensuring that there is a certain adjustment space for the combined height of the wedge block 1 and the inclined pressure plate 2 to adapt to the height difference between the back side 4 of the tool bar and the turret 9 between different devices, and to ensure that the lower end face 3 of the inclined pressure plate and the back side 4 of the tool bar can be effectively pressed.

[0025] Embodiment 3: Based on Embodiment 1, the gap between the back surface of the inclined pressure plate 7 and the front end surface 8 of the turret is 1 to 2 mm, so as to ensure that there is a certain adjustment space for the combined height of the wedge block 1 and the inclined pressure plate 2.

[0026] Example 4: Figure 2 As shown, when the back side 4 of the tool bar where the tool is mounted is a convex plane, the lower end surface 3 of the inclined pressure plate is designed to be a concave surface, ensuring that the lower end surface 3 of the inclined pressure plate can press the back side 4 of the tool bar where the tool is mounted.

[0027] like Figure 3 As shown, when the back side 4 of the tool bar where the tool is mounted is a straight plane, the lower end surface 3 of the inclined pressure plate is designed to be a straight plane to ensure that the lower end surface 3 of the inclined pressure plate can press the back side 4 of the tool bar where the tool is mounted.

[0028] When used specifically, first, install the pressure block to press the tool rod 5, reduce the vibration of the tool rod 5 and the blade, so as to achieve the purpose of reducing noise. The back side 6 of the wedge block is close to the front end face 8 of the turret, and there is a certain gap between the back side 7 of the inclined pressure plate and the front end face 8 of the turret; according to the different spatial heights of the turret 9 and the back side 4 of the tool rod, it is ensured that the height of the pressure block combination has a certain adjustment range, so as to ensure that the pressure block can be pressed against the back side 4 of the tool rod. The pressure block is used to press the front end of the tool rod 5 to reduce the vibration of the tool rod 5 and the blade, and the noise is reduced to 79.5dB, which meets the environmental protection standard of 85dB, and at the same time increases the service life of the tool rod 5 and the blade by more than 30%. This processing method adopts corresponding vibration reduction measures according to the principle of noise generation (vibration generation), so that the noise is significantly reduced and meets the industrial environmental protection standards. The principle of this method is scientific and reasonable, and at the same time, the service life of the tool rod 5 and the blade is increased, the original conventional tool installation method is changed, and the problem of excessive noise that has plagued the company for a long time is solved. The processing method of the utility model only needs to add a wedge-shaped combined pressure block, which is low in cost and effective, and provides a solution to the noise problem generated by turning processing.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A structure for reducing camshaft turning noise, comprising a wedge block (1), characterized in that: The bottom of the wedge block (1) is provided with an inclined pressure plate (2), a tool rod (5) is provided below the inclined pressure plate (2), a tool rod mounting back side (4) is provided on the top of the tool rod (5), an inclined pressure plate lower end face (3) is provided below the inclined pressure plate (2), and a turret (9) is fixedly connected to the side of the inclined pressure plate (2) by bolts (10), a turret front end face (8) is provided in front of the turret (9), an inclined pressure plate back side (7) is provided on the back of the inclined pressure plate (2), a certain gap is provided between the inclined pressure plate back side (7) and the turret front end face (8), and a wedge block back side (6) is provided on the back of the wedge block (1).

2. The structure for reducing camshaft turning noise according to claim 1, characterized in that: The taper of the wedge block (1) is between 5° and 10°, which is consistent with the angle of the inclined pressure plate (2) and has a certain self-locking property.

3. The structure for reducing camshaft turning noise according to claim 1, characterized in that: The lower end surface (3) of the inclined pressure plate is in close contact with the back surface (4) of the knife bar where the knife is mounted.

4. The structure for reducing camshaft turning noise according to claim 1, characterized in that: After the inclined pressure plate (2) is pressed, there is a certain gap between the back surface (7) of the inclined pressure plate and the front end surface (8) of the turret, and the gap is 1 to 2 mm.

5. The structure for reducing camshaft turning noise according to claim 1, characterized in that: After the wedge block (1) is pressed, the back surface (6) of the wedge block is in close contact with the front end surface (8) of the turret.

6. The structure for reducing camshaft turning noise according to claim 1, characterized in that: The wedge block (1) and the inclined pressure plate (2) are combined into a pressure block.

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