Deep hole drilling and boring rod shock absorber

Abstract

The utility model relates to a deep hole drilling and boring bar shock absorber which comprises a boring bar. The sealing cover is arranged outside the boring rod; the connecting cylinder is arranged between the sealing covers through long bolts and nuts; the supporting block is arranged between the sealing cover and the connecting cylinder; the reset spring is arranged between the supporting block and the connecting cylinder; the sheet-shaped magnet is arranged in the connecting cylinder; the damping block is arranged between the sheet magnets and is in contact with the supporting block; and the buffer spring is arranged between the damping blocks. By arranging the sealing cover, the long bolt, the connecting cylinder and the supporting block, the connecting cylinder is connected with the sealing cover through the long bolt to form a complete shock absorber shell, the shock absorber shell can be connected with a boring rod through a screw, and at the moment, the supporting block plays a role in supporting the boring rod under the action of the reset spring; and the distance between the drilling and boring cutter and the supporting point is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of deep hole drilling and boring, in particular to a deep hole drilling and boring bar vibration damper. Background Art

[0002] Deep hole drilling and boring is the boring process of deep holes with a hole diameter ratio (D / L) of 1:6 or more, such as deep holes in parts such as gun barrels, cannon barrels and machine tool spindles. The equipment used for deep hole drilling and boring operations is called a deep hole drilling and boring machine. In the process of deep hole drilling and boring, a boring bar is used. A drilling and boring tool is provided at one end of the boring bar, and the other end is connected to the deep hole drilling and boring machine. When the deep hole drilling and boring machine drives the drilling and boring tool to rotate through the boring bar, the drilling and boring tool bores the inner wall of the deep hole.

[0003] When the boring tool is boring the inner wall of a deep hole, it needs to be fed continuously to achieve complete boring of the inner wall of the deep hole. During the feeding process, the extension of the boring bar continues to increase. In actual use, an intermediate frame is usually set to support the boring bar. Since the boring bar needs to have a feed amount, there is still a large distance between the support point and the boring tool. When the diameter of the object of deep hole boring is small, the diameter of the boring bar is also small, and the overall hardness is also small. This results in that when the extension of the boring bar is large, the end of the boring bar where the boring tool is installed is more likely to bend;

[0004] Therefore, when the boring tool is boring, the boring tool interacts with the inner wall of the workpiece. At this time, the boring tool is affected by the interaction force, causing the boring bar with a large extension to vibrate easily at this point, resulting in reduced boring accuracy.

[0005] Therefore, a deep hole drilling and boring bar vibration damper is proposed to solve the above-mentioned problems. Utility Model Content

[0006] Based on the above description, the utility model provides a deep hole drilling and boring bar vibration damper to solve the problem that a boring bar with a smaller diameter is prone to vibration due to a large extension during drilling and boring operations.

[0007] The utility model solves the above technical problems with the following technical solutions: A deep hole drilling and boring bar vibration damper, comprising:

[0008] Boring bars; and

[0009] A cover disposed outside the boring bar;

[0010] A connecting cylinder, which is arranged between the sealing covers through long bolts and nuts;

[0011] A support block, which is arranged between the sealing cover and the connecting tube;

[0012] A return spring, which is arranged between the support block and the connecting tube;

[0013] A sheet magnet, which is arranged inside the connecting tube;

[0014] A damping block, which is disposed between the sheet magnets and in contact with the supporting block;

[0015] A buffer spring is arranged between the damping blocks.

[0016] On the basis of the above technical solution, the present invention can also be improved as follows.

[0017] Furthermore, the boring bar comprises a rod body, and a threaded hole is arranged on the outer surface of the rod body.

[0018] Furthermore, the sealing cover comprises a cover plate, a mounting tube is arranged on the opposite side of the cover plate, a through hole is arranged on the outside of the mounting tube, and a mounting hole is arranged on the side of the cover plate close to the mounting tube.

[0019] Furthermore, the connecting cylinder includes a cylinder body, a movable groove and a positioning hole are provided on a side of the cylinder body close to the sealing cover, a buffer groove connected to the movable groove is provided on a side of the cylinder body close to the sealing cover, and a partition is provided inside the buffer groove.

[0020] Furthermore, the partition divides the buffer slot into three spaces, the sheet magnets are located in two spaces at both ends, and the damping block is arranged in the middle space.

[0021] Furthermore, the support block includes a movable block arranged inside the movable groove, a curved surface is provided on a side of the movable block close to the connecting tube, a threaded column is provided on an end of the movable block away from the boring rod, a top cover is provided on the outside of the threaded column, a ball is provided between the threaded column and the top cover, and the return spring is provided between the support block and the movable groove.

[0022] Furthermore, the threaded column and the end of the top cover away from the movable block are respectively provided with a hemispherical groove and a spherical through hole, and the ball is arranged inside the hemispherical groove and passes through and extends to the outside of the spherical through hole.

[0023] Furthermore, the damping block includes a contact rod arranged inside the buffer groove, a threaded rod is arranged at one end of the contact rod away from the movable block, and a damping iron sheet is arranged outside the threaded rod through a nut.

[0024] Furthermore, one end of the contact rod close to the movable block is a spherical surface, the contact rod is in contact with the arc surface, and the spherical surface is located between the arc surface and the return spring.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0026] 1. The utility model is provided with a cover, a long bolt, a connecting tube and a supporting block, so that the connecting tube is connected to the cover by the long bolt to form a complete shock absorber housing, and the shock absorber housing can be connected to the boring bar by screws. At this time, the supporting block supports the boring bar under the action of the return spring, thereby reducing the distance between the drilling and boring tool and the supporting point;

[0027] 2. By setting the arc surface, the damping block and the sheet magnet, the effect of squeezing the axial movement of the damping block when the support block moves radially is achieved, so that the damping block produces relative movement with the sheet magnet when it moves axially, thereby achieving the effect of consuming vibration energy under the magnetic damping phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a deep hole drilling and boring bar vibration damper provided in an embodiment of the utility model;

[0029] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0030] Figure 3 This is a schematic diagram of the structure of the connecting tube in the embodiment of the utility model;

[0031] Figure 4 for Figure 3 A structural diagram from another perspective;

[0032] Figure 5 for Figure 4 A structural diagram from another perspective;

[0033] Figure 6 This is a schematic diagram of the structure of the support block in the embodiment of the utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the damping block in the embodiment of the utility model;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Boring rod; 2. Connecting cylinder; 21. Cylinder body; 22. Movable groove; 23. Buffer groove; 24. Partition plate; 25. Positioning hole; 3. Support block; 31. Movable block; 32. Arc surface; 33. Threaded column; 34. Hemispherical groove; 35. Ball; 36. Top cover; 37. Spherical through hole; 4. Reset spring; 5. Damping block; 51. Contact rod; 52. Threaded rod; 53. Damping iron sheet; 6. Buffer spring; 7. Sheet magnet; 8. Cover; 9. Long bolt; 10. Mounting hole. DETAILED DESCRIPTION

[0037] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0040] See also Figure 1 and Figure 2 , a deep hole drilling and boring bar vibration damper, comprising:

[0041] A boring bar 1, the boring bar 1 comprising a rod body, the outer surface of the rod body is provided with a threaded hole, the threaded hole and the screw cooperate with each other to play the role of fixing the cover 8;

[0042] The cover 8 is arranged on the outside of the boring bar 1. The cover 8 includes a cover plate. A mounting tube is arranged on the opposite side of the cover plate. A through hole is arranged on the outside of the mounting tube. A mounting hole 10 is arranged on the side of the cover plate close to the mounting tube. On the one hand, the cover 8 plays a role of connecting and fixing with the boring bar 1. On the other hand, the cover 8 is connected with the connecting tube 2 to seal the connecting tube 2.

[0043] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connecting cylinder 2 is arranged between the sealing covers 8 through long bolts 9 and nuts. The connecting cylinder 2 includes a cylinder body 21. A movable groove 22 and a positioning hole 25 are arranged on one side of the cylinder body 21 close to the sealing cover 8. The positioning hole 25 cooperates with the long bolt 9 so that the two connecting cylinders 2 can be connected and fixed to each other, and a complete cavity is formed between the movable groove 22 and the sealing cover 8. The cavity restricts the support block 3 so that the support block 3 can only move along the radial direction of the boring bar 1.

[0044] A buffer groove 23 connected to the movable groove 22 is arranged on one side of the cylinder 21 close to the cover 8, and a partition 24 is arranged inside the buffer groove 23. The partition 24 divides the buffer groove 23 into three spaces. The sheet magnet 7 is located in the two spaces at both ends, and the damping block 5 is arranged in the middle space. The buffer groove 23 provides space for the movement of the damping block 5 and allows the sheet magnet 7 to be installed therein.

[0045] like Figure 2 and Figure 6 As shown, the support block 3 is arranged between the cover 8 and the connecting tube 2, and the support block 3 includes a movable block 31 arranged inside the movable groove 22, and a curved surface 32 is arranged on a side of the movable block 31 close to the connecting tube 2, and the curved surface 32 cooperates with the damping block 5, so that when the movable block 31 moves along the radial direction of the boring bar 1, the damping block 5 is squeezed, so that the damping block 5 moves laterally;

[0046] The movable block 31 is provided with an arc surface 32 on one side close to the connecting tube 2, and a threaded column 33 is provided on one end of the movable block 31 away from the boring bar 1, and a top cover 36 is provided on the outside of the threaded column 33, and a ball 35 is provided between the threaded column 33 and the top cover 36, and the return spring 4 is provided between the support block 3 and the movable groove 22, and a hemispherical groove 34 and a spherical through hole 37 are provided on the ends of the threaded column 33 and the top cover 36 away from the movable block 31, respectively, and the ball 35 is located between the hemispherical groove 34 and the spherical through hole 37, and at this time, the ball 35 can rotate normally;

[0047] The return spring 4 is disposed between the support block 3 and the movable groove 22 . The return spring 4 plays a role of buffering on one hand and of returning on the other hand.

[0048] like Figure 2 and Figure 7 As shown, the sheet magnet 7 is arranged inside the connecting tube 2. The sheet magnet 7 provides a magnetic environment so that the damping block 5 can generate magnetic damping when it moves axially, thereby fully consuming the energy of vibration.

[0049] The damping block 5 is arranged between the sheet magnets 7 and in contact with the support block 3. The damping block 5 includes a contact rod 51 arranged inside the buffer slot 23. A threaded rod 52 is arranged at one end of the contact rod 51 away from the movable block 31. A damping iron sheet 53 is arranged outside the threaded rod 52 through a nut. The damping block 5 is used as a moving part in the magnetic damping system. When the support block 3 squeezes the damping block 5 to move, a magnetic damping phenomenon is generated between the damping block 5 and the sheet magnet 7.

[0050] The buffer spring 6 is arranged between the damping blocks 5 and plays a buffering role on the one hand and a resetting role on the other hand.

[0051] In actual use of this embodiment, the damping iron sheet 53 is sleeved on the outside of the threaded rod 52 and fixed with a nut. At this time, the damping block 5 is assembled, and the assembled damping block 5 and the sheet magnet 7 are sequentially inserted into the buffer groove 23, and the buffer spring 6 is placed between the two damping blocks 5.

[0052] After the damping block 5 and the sheet magnet 7 are installed, the support block 3 and the return spring 4 are inserted into the movable groove 22, and the connecting tube 2 and the cover 8 are connected and fixed to each other by bolts. The state of the device after installation is as follows: Figure 1 As shown, at this time, the vibration damper is installed on the outside of the boring bar 1 by screws;

[0053] When the boring bar 1 drives the boring tool to perform boring operation, the vibration damper enters the deep hole of the device to be processed. At this time, the support block 3 contacts the inner wall of the deep hole, providing a support point for the boring bar 1. At this time, the distance between the support point and the boring tool is small, so it can effectively prevent the boring bar 1 from vibrating due to the large extension amount.

[0054] When the boring bar 1 vibrates, the connecting tube 2 moves together. During this process, the support block 3 moves in the radial direction, that is, moves toward the direction close to the boring bar 1. At this time, the return spring 4 is compressed, and at the same time, the arc surface 32 squeezes the spherical surface, so that the contact rod 51 moves axially along the boring bar 1.

[0055] When the contact rod 51 moves axially, it cuts the magnetic flux lines, that is, it moves relative to the sheet magnet 7 along the axial direction. The moving contact rod 51 consumes the energy of vibration under the action of magnetic damping phenomenon. On the other hand, the buffer spring 6 is compressed to generate elastic force. When the external force disappears, the damping block 5 is reset under the action of the elastic force.

[0056] The vibration damper provides a support point for the boring bar 1, so that when the boring bar 1 is boring, it can effectively avoid the situation that the boring bar 1 is prone to vibration due to the poor spacing between the support point and the drilling and boring tool, and the vibration along the radial direction of the boring bar 1 is converted into axial movement by setting the support block 3, thereby reducing the negative impact caused by the vibration.

[0057] On the other hand, when the support block 3 moves, it squeezes the damping block 5 to move, so that the damping block 5 moves to cut the magnetic flux lines, and then consumes the axial movement under the action of the magnetic damping phenomenon, further reducing the negative impact of vibration.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep hole drilling and boring bar vibration damper, characterized in that: include: a boring bar (1); and A cover (8) disposed outside the boring bar (1); A connecting cylinder (2) which is arranged between the sealing covers (8) via long bolts (9) and nuts; A support block (3) disposed between the sealing cover (8) and the connecting tube (2); a return spring (4), which is arranged between the support block (3) and the connecting tube (2); A sheet magnet (7) disposed inside the connecting tube (2); A damping block (5) is arranged between the sheet magnets (7) and is in contact with the supporting block (3); A buffer spring (6) is arranged between the damping blocks (5).

2. The boring bar damper according to claim 1, characterized in that: The boring bar (1) comprises a rod body, and a threaded hole is arranged on the outer surface of the rod body.

3. The boring bar damper according to claim 1, characterized in that: The sealing cover (8) comprises a cover plate, a mounting tube is arranged on the opposite side of the cover plate, a through hole is arranged on the outside of the mounting tube, and a mounting hole (10) is arranged on the side of the cover plate close to the mounting tube.

4. The boring bar damper according to claim 1, characterized in that: The connecting cylinder (2) comprises a cylinder body (21), a side of the cylinder body (21) close to the sealing cover (8) is provided with a movable groove (22) and a positioning hole (25), a side of the cylinder body (21) close to the sealing cover (8) is provided with a buffer groove (23) connected to the movable groove (22), and a partition plate (24) is provided inside the buffer groove (23).

5. The boring bar damper according to claim 4, characterized in that: The partition (24) divides the buffer groove (23) into three spaces, the sheet magnet (7) is located in two spaces at both ends, and the damping block (5) is arranged in the middle space.

6. The boring bar damper according to claim 4, characterized in that: The support block (3) comprises a movable block (31) arranged inside the movable groove (22); a curved surface (32) is arranged on a side of the movable block (31) close to the connecting tube (2); a threaded column (33) is arranged on an end of the movable block (31) away from the boring bar (1); a top cover (36) is arranged outside the threaded column (33); a ball (35) is arranged between the threaded column (33) and the top cover (36); and the return spring (4) is arranged between the support block (3) and the movable groove (22).

7. The boring bar damper according to claim 6, characterized in that: The threaded column (33) and the top cover (36) are respectively provided with a hemispherical groove (34) and a spherical through hole (37) at one end away from the movable block (31); the ball (35) is arranged inside the hemispherical groove (34) and penetrates and extends to the outside of the spherical through hole (37).

8. The boring bar damper according to claim 6, characterized in that: The damping block (5) comprises a contact rod (51) arranged inside the buffer groove (23), a threaded rod (52) is arranged at one end of the contact rod (51) away from the movable block (31), and a damping iron sheet (53) is arranged outside the threaded rod (52) via a nut.

9. The boring bar damper according to claim 8, characterized in that: One end of the contact rod (51) close to the movable block (31) is a spherical surface, the contact rod (51) is in contact with the arc surface (32), and the spherical surface is located between the arc surface (32) and the return spring (4).

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