Anti-vibration cutter bar for machining inner diameter of deep hole

Abstract

The utility model discloses an anti-vibration cutter bar for machining the inner diameter of a deep hole. The anti-vibration cutter bar comprises a cutter bar body with a built-in cavity, a rear plug sealing cover and a cutter head, wherein the rear plug sealing cover and the cutter head are detachably connected to the two ends of the cutter bar body. An anti-seismic column is arranged in the cavity, and a gap is reserved between the periphery of the anti-seismic column and the inner wall of the cutter bar. A first elastic piece clamped between the anti-seismic column and the rear plug sealing cover and between the anti-seismic column and the tool bit is further arranged in the cavity, and a plurality of second elastic pieces which can be embedded into the cavity and elastically abut against the periphery of the anti-seismic column are connected to the outer portion of the tool bar in a threaded mode. The anti-vibration cutter bar for machining the inner diameter of the deep hole is provided with a structure easy to disassemble and assemble, debugging and mounting are convenient, and the requirements for the skill and experience of operators are low.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a vibration-resistant tool bar for deep hole inner diameter processing. Background Art

[0002] In the field of mechanical processing, a tool arbor with an enlarged long diameter is required when processing deep holes. However, due to the large long diameter of the tool arbor itself, the overhang length of the tool arbor will be much longer than that of a tool arbor of ordinary length, causing the tool arbor to vibrate greatly during lathe processing. Therefore, ripples and chatter marks will appear on the surface of the processed hole, affecting the smoothness of the inner hole surface and also reducing the service life of the blade.

[0003] Therefore, when processing deep holes, anti-vibration tool bars are usually used to improve the quality of deep hole processing. However, the anti-vibration tool bars in the prior art have relatively high production costs, which limits the widespread popularity of anti-vibration tool bars. At the same time, due to the complex structure of the anti-vibration tool bars, the installation and debugging are relatively complicated, requiring professional skills and experience, which increases the difficulty of use and maintenance. Utility Model Content

[0004] The utility model aims to provide a vibration-resistant tool bar for deep hole inner diameter processing, which has a structure that is easy to disassemble and assemble, is convenient for debugging and installation, and has low requirements on the skills and experience of operators.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a vibration-resistant tool bar for deep hole inner diameter processing, comprising a tool bar with a built-in cavity, and a rear plugging cover and a tool head detachably connected to both ends of the tool bar;

[0006] An anti-seismic column is arranged in the cavity, and a gap is left between the outer periphery of the anti-seismic column and the inner wall of the knife rod;

[0007] The cavity is also provided with a first elastic member sandwiched between the anti-seismic column and the rear plug cover, and between the anti-seismic column and the cutter head. The outside of the cutter rod is screwed with a plurality of second elastic members that can be embedded in the cavity and elastically abut against the outer periphery of the anti-seismic column.

[0008] In a preferred embodiment of the present invention, the first elastic member is coaxially arranged with the anti-seismic column, and a plurality of the second elastic members are perpendicular to the central axis of the anti-seismic column and are evenly distributed on the periphery of the anti-seismic column.

[0009] In a preferred embodiment of the utility model, the first elastic member includes a first spring and a top column, one end of the first spring elastically abuts against the top column, and the other end elastically abuts against the rear plug cover or the cutter head, and the outer periphery of the top column is provided with a sealing ring that can abut against the side wall of the cavity.

[0010] In a preferred embodiment of the utility model, the second elastic member includes a bolt threadedly connected to the knife rod, the end of the bolt extending into the cavity is provided with a cylindrical cavity, a limiting column is slidably connected in the cylindrical cavity, a spring cavity is provided at one end of the limiting column facing the bottom of the cylindrical cavity, and a second spring is provided between the bolt and the limiting column, with both ends respectively abutting against the bottom of the cylindrical cavity and the spring cavity.

[0011] In a preferred embodiment of the present invention, balls are provided at one end of the top column facing the anti-seismic column and one end of the limit column facing the anti-seismic column.

[0012] In a preferred embodiment of the utility model, two blade installation grooves are staggeredly arranged on two opposite sides of the cutter head.

[0013] The utility model has the following beneficial effects: when the cutter bar vibrates, the horizontal position of the anti-seismic column is positioned and limited by the first elastic member, and at the same time, the second elastic member on the cutter bar applies a force to the anti-seismic column when the cutter bar vibrates, so as to cause the anti-seismic column to vibrate in the opposite direction, offset the force generated by the vibration of the cutter bar, maintain the balance of the entire cutter bar, and reduce the vibration of the cutter head. The various components constituting the anti-seismic cutter bar have a clear structural hierarchy, are easy to disassemble and assemble, and are convenient for debugging and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the anti-vibration knife bar in the preferred embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the top view of the anti-vibration arbor in the preferred embodiment of the utility model;

[0017] Figure 3 In the preferred embodiment of the utility model Figure 2 Schematic diagram of the cross-sectional structure at AA;

[0018] Figure 4 In the preferred embodiment of the utility model Figure 3 A schematic diagram of the local enlarged structure at B;

[0019] Figure 5 In the preferred embodiment of the utility model Figure 2 Schematic diagram of the cross-sectional structure at BB;

[0020] Among them, 1. knife rod; 101. cavity; 2. rear plug cover; 3. knife head; 301. blade mounting groove; 4. earthquake-resistant column; 501. first spring; 502. top column; 503. sealing ring; 601. bolt; 6011. cylindrical cavity; 602. limit column; 6021. spring cavity; 603. second spring; 7. ball. DETAILED DESCRIPTION

[0021] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0023] like Figure 1-Figure 5 As shown, a vibration-resistant tool bar for deep hole inner diameter processing includes a tool bar 1 with a built-in cavity 101, and a rear plugging cover 2 and a tool head 3 detachably connected to both ends of the tool bar 1. Both ends of the cavity 101 in the tool bar 1 are respectively provided with threads, and the rear plugging cover 2 and the tool head 3 can be connected to the tool bar 1 through threaded connection to form a whole;

[0024] An anti-seismic column 4 is arranged in the cavity 101, and a gap is left between the outer periphery of the anti-seismic column 4 and the inner wall of the knife rod 1;

[0025] The cavity 101 is also provided with a first elastic member clamped between the anti-seismic column 4 and the rear plug cover 2, and between the anti-seismic column 4 and the cutter head 3. The outside of the cutter rod 1 is screwed with a plurality of second elastic members that can be embedded in the cavity 101 and elastically abut against the outer periphery of the anti-seismic column 4.

[0026] Specifically, the two first elastic members act on the two ends of the anti-seismic column 4 respectively, offsetting the force generated by the horizontal offset of the anti-seismic column 4, maintaining the balance of the anti-seismic column 4, and at the same time, when the cutter bar 1 vibrates, the anti-seismic column 4 in the cavity 101 thereof, under the elastic support of the second elastic member, causes the anti-seismic column 4 to vibrate in the opposite direction, so as to offset the force generated by the vibration of the cutter bar 1, maintain the balance of the entire cutter bar 1, and reduce the jumping of the cutter head 3. The anti-seismic cutter bar in the technical solution is only composed of the cutter bar 1, the rear plug cover 2, the cutter head 3, the first elastic member, and the second elastic member. The structure is clearly layered, easy to disassemble and assemble, and convenient for debugging and installation, and has low requirements on the skills and experience of the operator.

[0027] Furthermore, in order to increase the effect of the anti-seismic column 4 on counteracting the vibration of the knife bar 1 and improving the stability of the anti-seismic column 4, as Figure 2 , Figure 5 As shown, the first elastic member is coaxially arranged with the anti-seismic column 4 , and a plurality of second elastic members are perpendicular to the central axis of the anti-seismic column 4 and are evenly distributed on the periphery of the anti-seismic column 4 .

[0028] In the present technical solution, preferably, in order to reduce the manufacturing cost of the first elastic member, Figure 4 As shown, the first elastic member includes a first spring 501 and a top column 502. One end of the first spring 501 elastically abuts against the top column 502, and the other end elastically abuts against the rear plugging cover 2 or the cutter head 3. The outer periphery of the top column 502 is provided with a sealing ring 503 that can abut against the side wall of the cavity 101. The sealing ring 503 can ensure the relative stability of the top column 502 in the cavity 101.

[0029] In this technical solution, preferably, in order to reduce the manufacturing cost of the second elastic member, Figure 5 As shown, the second elastic member includes a bolt 601 threadedly connected to the shank 1, the end of the bolt 601 extending into the cavity 101 is provided with a cylindrical cavity 6011, a limiting column 602 is slidably connected in the cylindrical cavity 6011, and a spring cavity 6021 is provided at one end of the limiting column 602 facing the bottom of the cylindrical cavity 6011, and a second spring 603 is provided between the bolt 601 and the limiting column 602, with both ends respectively abutting against the bottom of the cylindrical cavity 6011 and the spring cavity 6021. The second elastic member is only composed of the bolt 601, the limiting column 602 and the second spring 603, and the manufacturing process and structure are relatively simple, easy to disassemble, and have strong substitutability. At the same time, different springs can be replaced according to actual conditions to increase shock resistance.

[0030] It should be noted that in the above technical solution, the displacement distance that the limiting column 602 can slide in the cylindrical cavity 6011 is greater than the sum of the vertical distances between the seismic column 4 and the inner wall of the cavity 101, so as to prevent the limiting column 602 from slipping out of the cylindrical cavity 6011.

[0031] In this embodiment, in order to reduce the friction between the top column 502 and the anti-seismic column 4, and between the limiting column 602 and the anti-seismic column 4, and to increase the service life of each component, a ball 7 is provided on one end of the top column 502 facing the anti-seismic column 4 and one end of the limiting column 602 facing the anti-seismic column 4.

[0032] Furthermore, two blade mounting grooves 301 are staggeredly arranged on opposite sides of the cutter head 3 for mounting the cutting blade.

[0033] Working principle: When the tool bar 1 vibrates, the two first elastic members act on the two ends of the anti-seismic column 4 respectively to offset the force generated by the horizontal displacement of the anti-seismic column 4. At the same time, the anti-seismic column 4 in the cavity 101 is supported by the elastic support of the second elastic member, which causes the anti-seismic column 4 to vibrate in the opposite direction to offset the force generated by the vibration of the tool bar 1, maintain the balance of the entire tool bar 1, and reduce the vibration of the cutter head 3. The anti-seismic tool bar composed of the tool bar 1, the rear plug cover 2, the cutter head 3, the first elastic member, and the second elastic member has a clear structure, is easy to disassemble and assemble, and is convenient for debugging and installation.

[0034] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A vibration-resistant tool bar for deep hole inner diameter processing, characterized in that: It comprises a knife rod (1) having a cavity (101) therein, and a rear plug cover (2) and a knife head (3) which are detachably connected to both ends of the knife rod (1); An anti-seismic column (4) is arranged in the cavity (101), and a gap is left between the outer periphery of the anti-seismic column (4) and the inner wall of the knife rod (1); The cavity (101) is also provided with a first elastic member sandwiched between the anti-seismic column (4) and the rear plug cover (2), and between the anti-seismic column (4) and the cutter head (3); the cutter rod (1) is externally screwed with a plurality of second elastic members capable of being embedded in the cavity (101) and elastically abutting against the outer periphery of the anti-seismic column (4).

2. The anti-vibration tool bar for deep hole inner diameter machining according to claim 1, characterized in that: The first elastic member is coaxially arranged with the anti-seismic column (4), and a plurality of the second elastic members are perpendicular to the central axis of the anti-seismic column (4) and are evenly distributed on the periphery of the anti-seismic column (4).

3. The anti-vibration tool bar for deep hole inner diameter machining according to claim 2, characterized in that: The first elastic member comprises a first spring (501) and a top column (502); one end of the first spring (501) elastically abuts against the top column (502), and the other end elastically abuts against the rear plug cover (2) or the cutter head (3); and a sealing ring (503) capable of abutting against a side wall of the cavity (101) is sleeved on the outer periphery of the top column (502).

4. The anti-vibration tool bar for deep hole inner diameter machining according to claim 3, characterized in that: The second elastic member comprises a bolt (601) threadedly connected to the knife rod (1); the end of the bolt (601) extending into the cavity (101) is provided with a cylindrical cavity (6011); a limiting column (602) is slidably connected in the cylindrical cavity (6011); one end of the limiting column (602) facing the bottom of the cylindrical cavity (6011) is provided with a spring cavity (6021); and a second spring (603) is provided between the bolt (601) and the limiting column (602), with its two ends respectively abutting against the bottom of the cylindrical cavity (6011) and the bottom of the spring cavity (6021).

5. The anti-vibration tool bar for deep hole inner diameter machining according to claim 4, characterized in that: A ball (7) is provided at one end of the top column (502) facing the anti-seismic column (4) and at one end of the limiting column (602) facing the anti-seismic column (4).

6. The anti-vibration tool bar for deep hole inner diameter machining according to claim 5, characterized in that: Two blade mounting grooves (301) are staggeredly arranged on opposite sides of the blade head (3).

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