Boring and rolling compound tool with damping function and adjustable rolling force

Abstract

The utility model relates to the technical field of boring and rolling machining, and discloses a boring and rolling compound tool with a damping function and an adjustable rolling force, and a working assembly comprises a hard alloy blade and a roller. The guide strip of the first main body part plays a guiding role in the machining process. A hard alloy blade is arranged on the first main body part. And the part on the second main body part drives the pin roller to move up and down, so that the rolling force is changed, and the concave-convex non-uniform area on the inner surface of the hole wall is flattened. The damping part is provided with a damping strip to restrain vibration of the cutter. According to the utility model, the advantages of guiding, boring, damping, rolling with adjustable rolling force and the like are integrated, the performance of the cutter is improved, multiple processing procedures can be avoided, and high-quality, high-efficiency and low-cost processing can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of boring and rolling processing, and in particular relates to a boring and rolling composite tool with shock absorption and adjustable rolling pressure. Background Art

[0002] The existing single boring and rolling tools are obtained through multiple processes, and the hole structure cannot be formed in one step. At the same time, the tool retraction, tool change and tool setting process also cause clamping errors, which in turn lead to processing errors, making it difficult to meet the requirements of processing quality. As the cutting process progresses, the tool is prone to axis deflection and chatter, causing abnormal wear of the tool, making it impossible to meet the requirements for indicators such as roughness and straightness, seriously affecting the improvement of processing quality and processing efficiency.

[0003] The existing traditional tools have weak guiding effect and single function, and there are many burrs after boring, low processing accuracy, and unsatisfactory rolling effect. Therefore, the tool is required to have good guiding function, rolling function and shock absorption function to ensure that the tool has appropriate rolling force during the processing, reduce vibration, and no offset phenomenon occurs, thereby ensuring the processing quality.

[0004] In the patent application number CN202311226115.8, a boring and rolling composite BTA deep hole processing tool and manufacturing method are disclosed, including a tool body and a working component, and the working component includes a blade and a needle roller. The guide strip of the guide part extrude and polish the processed hole wall on the same circumference of the outer circle, and self-center along the central axis of the tool rotation to improve the rotation accuracy. The main body is provided with a carbide blade, and the blade is provided with a self-lubricating area. The self-lubricating area has an array-like micro-texture structure, which can extend the service life of the tool. The main body is also provided with a nylon resin damping strip, which improves the tool damping and can significantly suppress the tool vibration. The main body is also provided with a circumferential array of needle rollers to flatten the uneven areas on the inner surface of the hole wall; however, the rolling force of the tool disclosed in the patent cannot be adjusted; at the same time, the damping strip is located between the blade and the needle roller, and the damping strip is protruding from the outer peripheral surface of the tool body; after the hole wall is bored, the damping strip plays a damping role. At this time, the hole wall has not been rolled, and the surface quality of the hole wall needs to be improved. The damping strip is in direct contact with the bored hole wall, so that the damping strip plays its damping role while aggravating its own wear. At the same time, the damping strip is protruding from the outer peripheral surface of the tool body, and the damping strip is connected to the main body, which is not conducive to the removal and replacement of the damping strip.

[0005] In the patent application number CN 200920237973.1, an adjustable composite tool for inner hole fine boring and rolling is disclosed. However, the tool directly adopts a conical ball for rolling adjustment. This method makes the rolling force distribution uneven during the rolling process. The conical ball has a taper, which may result in incomplete rolling. The contact length between the conical ball and the hole wall is short, which is not conducive to processing some high-strength and high-hardness materials. At the same time, the conical ball structure is relatively complex, and the design and manufacturing difficulty is relatively high compared to rollers. Utility Model Content

[0006] The utility model aims to provide a composite boring and rolling tool with shock absorption and adjustable rolling force, so as to solve the problems existing in the above-mentioned prior art, improve the processing quality and improve the processing efficiency at the same time.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] The utility model provides a composite boring and rolling tool with shock absorption and adjustable rolling force, comprising a first main body, a second main body and a shock absorption part which are connected in sequence, the first main body and the second main body being integrally formed, a carbide blade being mounted on the first main body, and threaded cooperation between the second main body and the shock absorption part; a guide strip is arranged on the first main body, a shock absorption strip protruding from the surface of the shock absorption part is arranged on the shock absorption part, the second main body is arranged as a stepped shaft, a tapered raceway is fixedly mounted on the second main body, a retaining frame is mounted outside the tapered raceway, a plurality of rollers are mounted on the retaining frame, and the plurality of rollers are circumferentially distributed around the axis of the tapered raceway; and the axial position of the tapered raceway is adjusted by an adjusting nut sleeved on the second main body.

[0009] As a further technical solution, the first main body is cylindrical, and a cemented carbide blade is installed on its end surface.

[0010] As a further technical solution, a positioning sleeve is sleeved between the tapered raceway and the first main body.

[0011] As a further technical solution, the tapered raceway and the second main body are connected via a key.

[0012] As a further technical solution, the guide bar is arranged to protrude from the outer peripheral surface of the first main body; a plurality of guide bars are arranged, and the guide bars are evenly distributed circumferentially around the axis of the first main body; and the guide bars are made of cemented carbide.

[0013] As a further technical solution, the shock absorbing strip is arranged to protrude from the outer circumferential surface of the shock absorbing part; there are multiple shock absorbing strips, and the shock absorbing strips are circumferentially distributed around the axis of the shock absorbing part; and the shock absorbing strips are made of nylon.

[0014] As a further technical solution, the retaining frame and the second main body are connected via a bearing seat and a bearing.

[0015] As a further technical solution, the positioning sleeve is arranged on the second main body from the right end of the second main body, the key is arranged in the keyway of the second main body, the tapered raceway, the positioning ring, the bearing seat, the thrust ball bearing, and the adjusting nut are arranged on the second main body in sequence, the rollers are evenly distributed circumferentially around the axis of the tapered raceway, the retaining frame is arranged on the rollers, and is connected to the bearing seat by a set screw. The adjusting nut is adjusted by a wrench, the bearing, the bearing seat, and the retaining frame move, the roller and the tapered raceway are displaced, and the roller moves up and down.

[0016] As a further technical solution, the second main body is configured as a stepped shaft, the adjusting nut is threadedly connected to the second main body, the shock absorbing part is threadedly connected to the second main body; the shock absorbing part and the second main body are positioned by steps.

[0017] The utility model is a kind of boring and rolling compound tool with adjustable rolling force and damping, the working components include carbide blades and rollers, after the carbide blades are used to process the hole, the rollers squeeze the processed hole wall surface, so that the hole wall surface produces plastic deformation, and the concave and convex inner surface of the hole wall is flattened to achieve a mirror rolling effect, thereby improving the processing quality. The utility model is a kind of boring and rolling compound tool with adjustable rolling force and damping, adopts boring-rolling composite processing, the hole can be formed at one time, avoiding multiple processing steps, and can achieve fast, efficient and low-cost processing.

[0018] The utility model has the following characteristics and advantages:

[0019] 1. The front section of the composite tool of the utility model has a guide bar for guiding and supporting, the middle section has a roller to change the rolling force, and the rear end has a shock-absorbing bar for shock-absorbing support. The front and rear ends of the composite tool are supported, so the tool is more stable during the processing, which can more effectively improve the processing stability compared with the existing technology.

[0020] 2. In the prior art, the shock absorbing strip is protruding from the main body. The utility model adopts a special shock absorbing part design, and the main body and the shock absorbing part are connected by threads, so that it is easy to disassemble the shock absorbing part and replace the damaged shock absorbing strip.

[0021] 3. The utility model reduces the wear of the shock-absorbing strip, and first bores, then rolls, and then shocks are absorbed. After boring and rolling, the surface processing quality is improved, and the wear of the shock-absorbing strip when in contact with the surface is reduced. Compared with patent CN202311226115.8, which first bores, then damps, and then rolls, the surface that the shock-absorbing strip contacts when working is a surface that has not been rolled and is prone to wear.

[0022] 4. The utility model adopts cylindrical rollers instead of tapered balls, so that the roller surface has no taper. When the rolling force is increased, the rolling force is evenly distributed on the surface, achieving more stable rolling. Cylindrical rollers usually have a longer contact length, so they can withstand greater pressure. This is very beneficial for processing some high-strength and high-hardness materials. The structure of cylindrical rollers is relatively simple, and the difficulty of design and manufacturing is relatively low, so the cost is also relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an isometric diagram of a composite boring and rolling tool with vibration reduction and adjustable rolling force disclosed in an embodiment of the utility model;

[0024] Figure 2 A cross-sectional schematic diagram of a composite boring and rolling tool with vibration reduction and adjustable rolling force disclosed in an embodiment of the utility model;

[0025] Figure 3 A schematic side view of a composite boring and rolling tool with vibration reduction and adjustable rolling force disclosed in an embodiment of the utility model;

[0026] Fig. 4(a), Fig. 4(b), Fig. 4(c), and Fig. 4(d) are schematic diagrams of the structure of a hexagon socket head screw and a hexagon socket cone-end set screw of a boring and rolling compound tool with vibration reduction and adjustable rolling force disclosed in an embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a shock absorbing part of a boring and rolling composite tool with shock absorption and adjustable rolling force disclosed in an embodiment of the utility model;

[0028] Figure 6 A schematic structural diagram of a holder for a composite boring and rolling tool with vibration reduction and adjustable rolling force disclosed in an embodiment of the utility model;

[0029] Figure 7 It is a structural schematic diagram of a boring and rolling compound tool with damping and adjustable rolling force disclosed in an embodiment of the utility model, with the components on the second main body of the retainer removed;

[0030] In the figure, 1 is a carbide blade, 2 is a guide strip, 3 is a retaining frame, 4 is a roller, 5 is an adjusting nut, 6 is a damping strip, 7 is a third threaded hole, 8 is a first threaded hole, 9 is a second threaded hole, 10 is a positioning sleeve, 11 is a tapered raceway, 12 is a positioning ring, 13 is a set screw, 14 is a bearing seat, 15 is a thrust ball bearing, 16 is a first main body, 161 is a second main body, 17 is a key, 18 is a damping part, 19 is a first cylindrical head screw, 20 is a second cylindrical head screw, 21 is a third cylindrical head screw, and 22 is a hexagonal cone end set screw. DETAILED DESCRIPTION

[0031] 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.

[0032] This embodiment provides a boring and rolling compound tool with damping and adjustable rolling force, comprising a first main body 16, a second main body 161, and a damping part 18 connected in sequence, wherein the first main body 16 and the second main body 161 are integrally formed, a carbide blade is mounted on the first main body 16, and the second main body 161 and the damping part 18 are threadedly matched; a guide strip is arranged on the first main body 16, a damping strip protruding from the surface of the damping part 18 is arranged on the damping part 18, the second main body 161 is arranged as a stepped shaft, a tapered raceway is fixedly mounted on the second main body 161, a retaining frame is mounted outside the tapered raceway, a plurality of rollers are mounted on the retaining frame, and the plurality of rollers are circumferentially distributed around the axis of the tapered raceway; and the axial position of the tapered raceway is adjusted by an adjusting nut sleeved on the second main body 161. The utility model improves processing quality and processing efficiency at the same time.

[0033] The carbide insert 1 is connected to the first main body 16 by a first cylindrical head screw 19, which plays a role in boring. The first main body 16 is provided with a guide bar 2, and the first main body 16 and the guide bar 2 are connected by a second cylindrical head screw 20. During processing, the guide bar 2 can play a guiding role to ensure the accuracy of the tool processing route.

[0034] More specifically, the guide strip 2 is arranged protruding from the outer circumferential surface of the first main body 16; there are multiple guide strips 2, and the guide strips 2 are evenly distributed around the axis of the first main body 16. During the processing, the carbide blade 1 enters first, and the guide strip 2 extrude and polish the processed hole wall on the same circumference of the outer circle to prevent the tool from vibrating and affecting the straightness. The utility model uses the guide strip 2 to correct the deviation of the tool axis in time, further improving the processing quality. In this specific embodiment, the guide strip 2 is made of carbide to ensure the processing straightness. The utility model can achieve good guiding performance by setting the guiding effect of the guide strip. The utility model can increase the stability during the processing by the shock-absorbing effect of the shock-absorbing strip.

[0035] In order to further enhance the working stability of the tool, a shock absorbing strip 6 is provided on the shock absorbing part 18 at the rear end, and the shock absorbing part 18 is connected to the second main body 161 by threads, and the shock absorbing strip 6 and the shock absorbing part 18 are connected by a third cylindrical head screw 21, and the shock absorbing strip 6 is provided protruding from the outer cylindrical surface of the shock absorbing part 18; there are multiple shock absorbing strips 6, and the shock absorbing strips 6 are circumferentially distributed around the axis of the shock absorbing part 18; the shock absorbing strip 6 is made of nylon, has strong flexibility, and is a deformable body. When the shock absorbing strip 6 contacts the workpiece, the shock absorbing strip 6 will deform relative to the workpiece, and the shock absorbing strip 6 and the workpiece change from line contact to surface contact, which plays a role in shock absorption. In this embodiment, a special shock-absorbing part is designed, and the main body and the shock-absorbing part are connected by threads, so that it is easy to disassemble the shock-absorbing part and replace the damaged shock-absorbing strip; in this embodiment, the wear of the shock-absorbing strip is reduced, and the shock-absorbing strip is first bored and then rolled before shock-absorbing. After boring and rolling, the surface processing quality is improved, and the wear of the shock-absorbing strip 6 is reduced when it contacts the surface. Compared with patent CN202311226115.8, the shock-absorbing strip 6 contacts the surface after boring, shock-absorbing and rolling. The surface in contact with the shock-absorbing strip 6 during operation is a surface that has not been rolled and is easy to wear.

[0036] In this embodiment, the front section of the composite tool has a guide bar that serves as a guide and support, the middle section has a roller that changes the rolling force, and the rear end has a shock-absorbing bar that serves as a shock-absorbing support. Since the composite tool has support at the front and rear ends, the tool is more stable during the processing process, which more effectively improves the processing stability compared to the existing technology.

[0037] In addition, as a boring and rolling compound tool with shock absorption and adjustable rolling force, the first main body 16 and the second main body 161 are integrated into a structure, and the second main body 161 is set as a stepped shaft. During the installation process, first, the carbide blade 1 and the first main body 16 are connected by the first cylindrical head screw 19, and the first main body 16 and the guide strip 2 are connected by the second cylindrical head screw 20. The positioning sleeve 10 is set on the second main body 161 from the right end of the second main body 161, and then the key 17, the tapered raceway 11, the positioning ring 12, the thrust ball bearing 15, the bearing seat 14, and the adjusting nut 5 are sequentially arranged on the second main body 161. The second main body 161 and the adjusting nut 5 are connected by threads, and the adjusting nut 5 can be adjusted by a wrench, and the various components are realized. Positioning, roller 4 is a cylindrical structure, and there are multiple rollers 4, which are circumferentially distributed around the axis of the tapered raceway 11. Roller 4 is used to flatten the uneven concave and convex areas on the inner surface of the hole wall through rolling. After roller 4 is placed, retainer 3 is installed, and retainer 3 and bearing seat 14 are connected by set screws 13. When there is a need to adjust the rolling force, the adjusting nut 5 is adjusted to transmit power to the thrust ball bearing 15 and the bearing seat 14, driving retainer 3 to move, so that roller 4 and tapered raceway 11 are displaced, and then the height of roller 4 is changed, so that the rolling force can be changed, thereby realizing the integration of the advantages of guiding, boring, shock absorption, rolling with adjustable rolling force, etc., while the tool performance is improved, multiple processing steps can be avoided, and high-quality, efficient and low-cost processing can be achieved.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A composite boring and rolling tool with adjustable rolling force and shock absorption, characterized in that: It comprises a first main body, a second main body and a shock absorbing part which are connected in sequence, wherein the first main body and the second main body are integrally formed, a carbide blade is mounted on the first main body, and the second main body and the shock absorbing part are threadedly matched; a guide strip is arranged on the first main body, a shock absorbing strip protruding from the surface of the shock absorbing part is arranged on the shock absorbing part, the second main body is arranged as a stepped shaft, a tapered raceway is fixedly mounted on the second main body, a retaining frame is mounted outside the tapered raceway, a plurality of rollers are mounted on the retaining frame, and the plurality of rollers are circumferentially distributed around the axis of the tapered raceway; and the axial position of the tapered raceway is adjusted by an adjusting nut sleeved on the second main body.

2. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The first main body is cylindrical, and a hard alloy blade is installed on its end surface.

3. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: A positioning sleeve is sleeved between the tapered raceway and the first main body.

4. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The tapered raceway is connected to the second main body via a key.

5. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The guide bars are provided in plurality, and are arranged around the circumference of the first main body and fixed to the first main body by screws.

6. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The shock absorbing strips are provided in plurality, and the plurality of shock absorbing strips are arranged around the circumference of the shock absorbing part and fixed on the shock absorbing part by screws.

7. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The retaining frame and the second main body are connected via a bearing seat and a bearing.

8. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The shock absorbing part and the second main body part are positioned by steps.

9. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The guide strip is made of hard alloy.

10. A composite boring and rolling tool with adjustable rolling force and shock absorption as claimed in claim 1, characterized in that: The shock absorbing strip is made of nylon.

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