Cutting shockproof device

Abstract

A cutting shock-proof device belongs to the technical field of metal part machining and comprises a cutting shock-proof front portion and a cutting shock-proof rear portion, the cutting shock-proof front portion and the cutting shock-proof rear portion share the same central axis and are integrally formed, and the cutting shock-proof device is fixed to a tool apron of a numerical control lathe through a connecting outer circle portion and a pressing plane. The cutter bar part is connected through the connecting hole and the pressing thread to fix the cutting tool bit, the rigidity function of the cutter is enhanced, the problem of cutter vibration during deep and long hole machining is effectively solved through the rigidity enhancing function, then the product surface quality and the machining efficiency are improved, and meanwhile the cutter has the advantages of being light in weight, easy to operate, wide in application range, low in cost and the like. And the device has the advantages of high use reliability and no damage to parts and is widely applied to the field of metal part machining.

Description

Technical Field

[0001] The utility model relates to a cutting shockproof device, and specifically belongs to the field of metal parts processing and manufacturing. Background Art

[0002] In today's mechanical processing, there are often large workpieces and deep and long holes that need to be processed. If a general turning tool is used for direct processing, it will easily cause tool vibration, resulting in poor surface roughness and unstable dimensions, which will directly affect product quality and processing efficiency. If no external force auxiliary protection measures are taken, it will be difficult to process qualified products. In view of this, it is necessary to invent a cutting vibration prevention device to solve the problems existing in the prior art. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and provide a cutting vibration-proof device, which can solve the problem of tool vibration when machining deep and long holes and reduce manpower input.

[0004] The utility model is implemented by adopting the following technical solutions.

[0005] A cutting shockproof device, comprising a cutting shockproof front part and a cutting shockproof rear part, the cutting shockproof front part and the cutting shockproof rear part share the same central axis and are integrally formed, the cutting shockproof front part is a polyhedral cylinder formed based on the variation of a regular octagonal prism, that is, three adjacent prism faces on the right part form a thickened shockproof outer circumference with arc surfaces to form a polyhedral cylinder, and a connecting hole is provided inside; the thickened shockproof outer circumference is located on the right part of the cutting shockproof front part, the prism faces adjacent to the thickened shockproof outer circumference are clamping and fixing bolt faces, the prism faces adjacent to the clamping and fixing threaded faces are yielding inclined faces, and the remaining two faces are prism faces of the regular octagonal prism;

[0006] The opposite edge surface of the clamping and fixing thread surface is also a clamping and fixing thread surface, and 2-5 clamping thread holes are respectively arranged on the two corresponding clamping and fixing bolt surfaces, and the two corresponding clamping thread holes form a group, and each group is fixed with a corresponding tool rod by a threaded bolt;

[0007] The interior of the polyhedral cylinder is a connecting hole along the central axis, located at the center of the front end surface of the cutting vibration prevention device, and is in the shape of a cylindrical hole;

[0008] The shape of the rear part of the cutting shockproof device is the same as that of the front part of the cutting shockproof device. The size of the rear part of the cutting shockproof device is smaller than that of the front part of the cutting shockproof device. It is also a polyhedral cylinder formed based on the variation of a regular octagonal prism, that is, the three adjacent edges on the right are connected to the outer circle by an arc surface. The top of the cutting shockproof device is a clamping plane, and the other four faces are edges of the regular octagonal prism, and the outer surface is a smooth surface. A threaded hole is arranged at the center of the rear end face, and the light hole below the threaded hole is connected to the connecting hole.

[0009] Furthermore, three fixing threaded through holes are provided on the surface of the clamping and fixing threaded surface and the opposite edge surface is the same as this surface. Symmetrical clamping threaded holes are respectively provided on the clamping and fixing threaded surface, and the symmetrical clamping threaded holes are grouped in pairs. There are 3 groups of clamping threaded holes in total. The 3 groups are fixed with matching cutting tool rod parts L by threaded bolts, and the tool rod parts are equipped with cutting tool heads.

[0010] Furthermore, the three groups of clamping threaded holes are cylindrical holes in shape, the major diameter of the coarse threaded holes is 12 mm, and the distances between the three groups of center axes and the front end face of the cutting shockproof front part are 15 mm, 45 mm and 75 mm respectively.

[0011] Furthermore, the connection hole is located at the center of the front end of the cutting vibration prevention device, and is in the shape of a cylindrical hole, with a diameter of 40 mm and a depth of 95 mm. The clearance between the inner diameter of the connection hole and the tool bar is φ40≦0.02 mm.

[0012] The transition point where the front cutting shockproof part and the rear cutting shockproof part are connected is a 1*1 root clearing.

[0013] Furthermore, a threaded hole is provided at the center of the rear end face of the cutting shockproof device. The threaded hole has a major diameter of 12 mm and a depth of 30 mm. Below the threaded hole is a light hole with a diameter of 10 mm, which is connected to the connecting hole.

[0014] The arithmetic mean deviation of the surface roughness values ​​of the connecting outer circular part and the connecting hole does not exceed 1.2um.

[0015] The length of the cutting shockproof rear part is 90mm, and the total length of the cutting shockproof front part and the cutting shockproof rear part is 220mm. The vertical distance between the upper and lower pressing planes of the cutting shockproof rear part is 36mm, and the outer diameter of the cross section is φ40mm. Compared with the prior art, the utility model has the following beneficial effects:

[0016] The technical solution of the utility model utilizes the function of rigidity enhancement to effectively solve the problem of tool vibration when processing deep and long holes, thereby improving the surface quality of the product and the processing efficiency. At the same time, it has the advantages of light weight, simple operation, wide application range, high reliability and no damage to parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model in the direction of A;

[0019] Figure 3 It is a schematic cross-sectional view of the structure AA of the utility model;

[0020] Figure 4 This is a schematic diagram of the utility model in use.

[0021] In the figure: 1. Connecting outer circle; 2. Thickening shockproof outer circle; 3. Connecting hole; 4. Pressing and fixing thread surface; 5. Giving way inclined surface; 6. Pressing plane; L is the shank part; H2 is the root cleaning; direction a in the figure is the front; direction b in the figure is the back; direction c in the figure is the top; direction d in the figure is the bottom; direction e in the figure is the left; direction f in the figure is the right. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] See attached Figure 1-Figure 4 .

[0024] A cutting shockproof device comprises a cutting shockproof front part and a cutting shockproof rear part, wherein the cutting shockproof front part and the cutting shockproof rear part have the same central axis and are integrally formed, the cutting shockproof front part is a polyhedral cylinder formed based on the variation of a regular octagonal prism, that is, three adjacent edges on the right part are formed with arc surfaces to form a thickened shockproof outer circumference 2, forming a polyhedral cylinder, and a connecting hole 3 is provided inside; the thickened shockproof outer circumference 2 is located on the right part of the cutting shockproof front part, the adjacent edges of the thickened shockproof outer circumference 2 are clamping and fixing bolt surfaces 4, the adjacent edges of the clamping and fixing threaded surfaces 4 are yielding inclined surfaces 5, and the remaining two surfaces are edges of the regular octagonal prism; the function of the yielding inclined surface is to facilitate the effective spraying of cutting fluid onto the tool tip being processed.

[0025] See Figure 1 The opposite edge surface of the clamping and fixing threaded surface 4 is also a clamping and fixing threaded surface 4. Two corresponding clamping and fixing bolt surfaces are respectively provided with 2-5 clamping threaded holes 41. Two corresponding clamping threaded holes 41 form a group. Each group is fixed with a matching cutting head by a threaded bolt. The purpose is to clamp the turning tool to prevent the turning tool from producing a slight displacement and deviation.

[0026] The interior of the polyhedral cylinder is a connecting hole 3 along the central axis, located at the center of the front end surface of the cutting vibration prevention device, and is in the shape of a cylindrical hole;

[0027] The purpose of the connecting hole 3 is to assemble the turning tool and to fix the turning tool.

[0028] Preferably, the shape of the rear part of the cutting shockproof device is the same as the appearance of the front part of the cutting shockproof device. The size of the rear part of the cutting shockproof device is smaller than that of the front part of the cutting shockproof device. It is also a polyhedral cylinder formed based on the variation of a regular octagonal prism, that is, the three adjacent edges on the right are connected to the outer circle 1 by an arc surface, and the clamping plane 6 is located above the cutting shockproof device. The remaining four faces are edges of the regular octagonal prism, and the outer surface is a smooth surface. A threaded hole 8 is arranged at the center of the rear end face, and the light hole 7 below the threaded hole 8 is connected to the connecting hole 3.

[0029] The function of the light hole 7 is to penetrate the vent hole to facilitate the loading and unloading of the turning tool.

[0030] See Figure 1 , Figure 2 The surface of the clamping and fixing threaded surface 4 is provided with three fixing threaded through holes 41 and the opposite edge surface is the same as this surface. The clamping and fixing threaded surface 4 is respectively provided with symmetrical clamping threaded holes 41, and the symmetrical clamping threaded holes are grouped in pairs, with a total of 3 groups of clamping threaded holes 41. The 3 groups are fixed with matching cutting tool rods by threaded bolts, and the tool rods are equipped with cutting tool heads.

[0031] See also Figure 2 , Figure 3 The tightening threaded hole 41 is used to install screws, bolts or other fasteners to fix the blade to prevent the blade from loosening and affecting the normal operation of the turning tool.

[0032] Furthermore, the three groups of clamping threaded holes 41 are cylindrical holes, the major diameter of the coarse threaded holes is 12mm, and the distances between the central axes of the three groups and the front end surface of the cutting shockproof front part are 15mm, 45mm and 75mm respectively. After the clamping threaded holes 41 are installed with screws, they are tightened to clamp the turning tool, preventing the turning tool from having a slight displacement and deviation. Figure 3 The connection hole 3 is located at the center of the front end of the cutting vibration prevention device and is a cylindrical hole with a diameter of 40 mm and a depth of 95 mm. The inner diameter of the connection hole 3 and the clearance between the tool bar and the tool bar are φ40≦0.02 mm. The advantage of this design is that it is easy to assemble.

[0033] In addition, the transition between the front cutting shockproof part and the rear cutting shockproof part is 1*1 root cleaning. The purpose of root cleaning is to remove defects such as pores, pits, impurities, etc. at the root of the first side weld, and to punch out a suitable welding groove. The original groove has been damaged by the reverse side weld, so as to ensure that the weld passes UT and RT flaw detection and the quality of the weld meets the use requirements.

[0034] See also Figure 3A threaded hole 8 is arranged at the center of the rear end face of the cutting vibration prevention device. The major diameter M of the threaded hole 8 is 12 mm and the depth is 30 mm. Below the threaded hole 8 is a light hole 7 which is a through hole with a diameter of 10 mm and communicates with the connecting hole 3. The threaded hole 8 is used for positioning the cutting vibration prevention device and the tool holder. The arithmetic mean deviation of the surface roughness value of the connecting outer circle 1 and the connecting hole 3 does not exceed 1.2 um, so that the fit can be better and the effect can be guaranteed.

[0035] The length of the cutting shockproof rear part is 90mm, and the total length of the cutting shockproof front part and the cutting shockproof rear part is 220mm. The vertical distance of the cutting shockproof rear part is 36mm, and the maximum horizontal distance H1 of the outer tangent of the cross section is 40mm (one end is the outermost tangent end of the circular part), the upper limit deviation of machining is -0.02mm, and the lower limit deviation is -0.03mm.

[0036] See also Figure 4 , the working process is as follows:

[0037] First, put the tool bar L into the connecting hole 3. The tool bar is equipped with a cutting bit. Screw the bolt or screw into the threaded connecting hole and tighten the tool bar. The lathe tool holder clamps the rear of the cutting shockproof device. After the installation is completed correctly, turn on the power and start the machine tool. The machine tool power drives the shockproof device to move as a whole, and drives the cutting bit through the cutting shockproof device to complete the cutting work.

[0038] The working principle of the cutting vibration prevention device is that when cutting a workpiece, by strengthening the rigidity of the cutting tool rod, the problem of tool vibration when processing deep and long holes is effectively solved, thereby improving the product surface quality and processing efficiency.

[0039] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A cutting vibration prevention device, characterized in that: It comprises a cutting shockproof front part and a cutting shockproof rear part. The cutting shockproof front part and the cutting shockproof rear part are integrally formed on the same central axis. The cutting shockproof front part is a polyhedral cylinder formed based on the variation of a regular octagonal prism, that is, three adjacent prism faces on the right part form a thickened shockproof outer circumference (2) with arc surfaces to form a polyhedral cylinder, and a connecting hole (3) is provided inside. The thickened shockproof outer circumference (2) is located on the right part of the cutting shockproof front part, and the adjacent prism faces of the thickened shockproof outer circumference (2) are clamping and fixing threaded surfaces (4), and the adjacent prism faces of the clamping and fixing threaded surfaces (4) are yielding inclined surfaces (5), and the remaining two faces are prism faces of the regular octagonal prism. The opposite edge surface of the clamping and fixing thread surface (4) is also a clamping and fixing thread surface (4), and 2-5 clamping thread holes (41) are respectively provided on the two corresponding clamping and fixing thread surfaces (4), and the two corresponding clamping thread holes (41) form a group, and each group is fixed with a corresponding cutting head by a threaded bolt; The interior of the polyhedral cylinder is a connecting hole (3) along the central axis, located at the center of the front end surface of the cutting vibration prevention device, and is in the shape of a cylindrical hole; The rear part of the cutting vibration-proof device has a connecting outer circumference (1) for connecting to a tool holder of a machine tool. The connecting outer circumference (1) has two symmetrical clamping planes (6) for clamping and fixing the vibration-proof device. A threaded hole (8) is provided at the center of the rear end face. The light hole (7) below the threaded hole (8) communicates with the connecting hole (3).

2. A cutting vibration prevention device according to claim 1, characterized in that: The surface of the clamping and fixing threaded surface (4) is provided with three clamping threaded holes (41) and the opposite edge surface is the same as this surface. The clamping and fixing threaded surface (4) is respectively provided with symmetrical clamping threaded holes (41), and the symmetrical clamping threaded holes (41) are grouped in pairs, with a total of three groups of clamping threaded holes (41). The three groups are fixed with matching cutting tool rods through threaded bolts, and the tool rods are equipped with cutting tool heads.

3. A cutting vibration prevention device according to claim 2, characterized in that: The three groups of clamping threaded holes (41) are cylindrical holes in shape, the major diameter of the coarse threaded holes is 12 mm, and the distances between the central axes of the three groups and the front end surface of the cutting shockproof front part are 15 mm, 45 mm and 75 mm respectively.

4. A cutting vibration prevention device according to claim 1, characterized in that: The connecting hole (3) has a diameter of 40 mm and a depth of 95 mm.

5. A cutting vibration prevention device according to claim 4, characterized in that: The inner diameter of the connecting hole (3) and the clearance between the knife rod and the connecting hole (3) is ≤ 0.02 mm.

6. A cutting vibration prevention device according to claim 1, characterized in that: The transition point where the two connecting parts of the cutting shockproof front part and the cutting shockproof rear part are connected is 1*1 root clearing.

7. A cutting vibration prevention device according to claim 2, characterized in that: A threaded hole (8) is arranged at the center of the rear end face of the cutting shockproof device. The threaded hole (8) has a major diameter of 12 mm and a depth of 30 mm. Below the threaded hole (8) is a light hole (7) with a diameter of 10 mm and communicates with the connecting hole (3).

8. The cutting vibration prevention device according to claim 1, characterized in that: The profile arithmetic mean deviation of the surface roughness values ​​of the connecting outer circular portion (1) and the connecting hole (3) does not exceed 1.2 um.

9. The cutting vibration prevention device according to claim 1, characterized in that: The length of the rear part of the cutting shockproof is 90mm, and the total length of the front part and the rear part of the cutting shockproof is 220mm.

10. The cutting vibration prevention device according to claim 1, characterized in that: The vertical distance between the upper and lower pressing planes of the cutting shockproof rear part is 36 mm, and the outer diameter of the cross section is φ40 mm.

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