Deep hole fine boring tool

By designing a deep hole precision boring tool, using the support structure of boring bars and wear-resistant sleeves, combined with universal couplings and oil injection channels, the problem of difficult to process deep holes in large workpieces is solved, and high precision and high quality depth is achieved Hole processing.

CN222242765UActive Publication Date: 2024-12-27CHONGQING SHANYI INTELLIGENT EQUIPMENT CO LTD
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Patent Information

Application Number
CN202421033628.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-13
Publication Date
2024-12-27
Estimated Expiration
2034-05-13

AI Technical Summary

Technical Problem

It is difficult to achieve deep hole machining of workpieces and to ensure the quality of holes. Especially under the limitations of large workpieces and traditional machine tools, the boring bars have large overhangs and vibrations, making it difficult to ensure the coaxiality and cylindricality of the holes.

Method used

A deep-hole fine boring tool is designed, including a boring bar and a first and second support members supporting the boring bar. By supporting the first wear-resistant sleeve and the second wear-resistant sleeve, a universal coupling is provided on the boring bar. , combined with the first and second oil injection channels, the support on both sides of the boring bar is good, vibration is reduced, and positioning accuracy is high, ensuring processing quality.

Benefits of technology

Through boring, the boring bars are avoided from overhanging too long, vibration is reduced, and the processing accuracy and the quality of the holes are improved. The support is designed with simple and fast, ensuring the coaxiality and cylindricality of the deep holes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of machining, and particularly relates to a deep hole fine boring tool which comprises a boring rod, a first supporting piece and a second supporting piece. The first supporting piece comprises a limiting piece and a positioning piece, a first wear-resistant sleeve is arranged in the limiting piece, and the positioning piece is used for detachably fixing the limiting piece to a deep hole opening of a workpiece; the second supporting piece comprises a supporting seat, the supporting seat is detachably and fixedly installed on the side, away from the deep hole opening, of the workpiece, a supporting block is arranged on the supporting seat, at least one through hole is formed in the supporting block, and a second abrasion-resistant sleeve is arranged in each through hole. A universal coupling capable of being mounted on a machine tool is arranged at one end of the boring rod, the machine tool can drive the boring rod to rotate in the first wear-resistant sleeve and the second wear-resistant sleeve, and a cutter for machining a deep hole of a workpiece is arranged on the boring rod; the problems that deep hole machining of a workpiece is difficult to achieve and the machining quality of a hole is difficult to guarantee through an existing tool are solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a deep hole precision boring tool. Background Art

[0002] Precision boring is a further processing of forged, cast or drilled holes. Boring can enlarge the hole diameter, improve accuracy, reduce surface roughness, and better correct the deviation of the original hole axis. In the mechanical processing industry, for units without larger processing centers or special equipment, deep hole processing of some large workpieces is a relatively difficult problem, such as Figure 1-2 The workpiece shown includes multiple series of holes, and the axial length of each group of holes is 1930 mm. The length of the current machine tool boring bar is difficult to achieve deep hole processing of the workpiece, and traditional machine tools usually use a boring bar with a fine boring head installed in the spindle hole for processing. Affected by the hole depth of the workpiece, the boring bar needs to be overhanged for a long time, and the vibration is large during the processing. The boring head equipped with a fine boring tool is large in size and easy to sag, making it difficult to ensure the coaxiality and cylindricity of the hole. Utility Model Content

[0003] The utility model aims to provide a deep hole precision boring tool to solve the problem that the existing tool is difficult to realize the deep hole processing of the workpiece and difficult to ensure the processing quality of the hole.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A deep hole precision boring tool comprises a boring bar and a first support member and a second support member for supporting the boring bar;

[0006] The first support member includes a limit member and a positioning member, wherein a first wear-resistant sleeve is arranged inside the limit member, and the positioning member is used to detachably fix the limit member at the deep hole opening of the workpiece;

[0007] The second support member comprises a support seat, which is detachably fixedly mounted on a side of the workpiece away from the deep hole opening, and a support block is arranged on the support seat, and at least one through hole is arranged on the support block, and a second wear-resistant sleeve is arranged in each through hole;

[0008] A universal coupling is provided at one end of the boring bar. During processing, the universal coupling is installed on the machine tool. The other end of the boring bar passes through the first wear-resistant sleeve and the second wear-resistant sleeve in sequence. The machine tool can drive the boring bar to rotate in the first wear-resistant sleeve and the second wear-resistant sleeve. The boring bar is provided with a tool for processing deep holes in the workpiece.

[0009] The first support member and the second support member are respectively provided with a first oil injection channel and a second oil injection channel. The first oil injection channel is used to transport lubricating oil between the first wear-resistant sleeve and the boring bar, and the second oil injection channel is used to transport lubricating oil between the second wear-resistant sleeve and the boring bar.

[0010] Furthermore, the limit member is located in the deep hole of the workpiece, and the limit member includes a limit block and a limit cover plate that are detachably fixedly connected, the limit block is provided with an installation groove, and the limit cover plate fixes the first wear-resistant sleeve in the installation groove; the positioning member includes a positioning cover plate and a positioning cone sleeve, the positioning cover plate is detachably fixed on the end face of the limit block, and the positioning cover plate makes the positioning cone sleeve fit tightly with the inner wall of the deep hole of the workpiece and the outer wall of the limit block.

[0011] Furthermore, an oil filling hole is provided on the positioning cover plate, an oil through hole is provided on the limit block, and an oil outlet hole is provided on the first wear-resistant sleeve. The oil filling hole, the oil through hole and the oil outlet hole are interconnected to form a first oil filling channel; a first sealing ring is provided between the positioning cover plate and the first wear-resistant sleeve, and the first sealing ring is used to prevent lubricating oil from penetrating into the interior of the workpiece.

[0012] Furthermore, at least one limiting plate is detachably fixedly mounted on the support block, and the limiting plate fixes the second wear-resistant sleeve in the through hole.

[0013] Furthermore, at least one oil filling port is provided on the support block, and an oil outlet is provided on the second wear-resistant sleeve. The oil filling port and the oil outlet are interconnected to form a second oil filling channel; a second sealing ring is provided between the limit plate and the second wear-resistant sleeve, and the second sealing ring is used to prevent lubricating oil from penetrating into the interior of the workpiece.

[0014] Furthermore, one end of the support seat is threadedly connected to the end face of the workpiece, and the other end of the support seat is fixed to the other end face of the workpiece by a locking device. The locking device includes a locking cone sleeve and a locking cover plate. The locking cover plate is removably fixed to the workpiece, and the locking cover plate makes the locking cone sleeve fit tightly with the inner wall of the workpiece and the outer wall of the support seat.

[0015] Furthermore, the first wear-resistant sleeve and the second wear-resistant sleeve are both provided with annular grooves, and the two annular grooves are respectively connected with the first oil injection channel and the second oil injection channel.

[0016] Furthermore, the first wear-resistant sleeve and the second wear-resistant sleeve are both made of copper alloy material.

[0017] The technical principle of the utility model is:

[0018] During processing, the workpiece is mounted on the workbench of the machine tool, the first support member is mounted at the mouth of the deep hole to be processed, and the second support member is mounted on the workpiece so that the first wear-resistant sleeve and the second wear-resistant sleeve are located on the same axis as the deep hole to be processed, and then the universal coupling on the boring bar is connected to the machine tool, the workpiece is driven to move through the workbench, the boring bar passes through the first wear-resistant sleeve and the second wear-resistant sleeve in sequence, and the tool is mounted on the boring bar through the hole at the upper end of the workpiece. The deep hole precision boring processing of the workpiece can be achieved by driving the boring bar and the tool to rotate and the workpiece to move through the machine tool, and lubricating oil is added to the first oil injection channel and the second oil injection channel during the processing.

[0019] Compared with the prior art, the utility model has the following beneficial technical effects:

[0020] The utility model adopts a through-boring method to process a deep hole in a workpiece, and supports two sides of a boring bar respectively through a first support member and a second support member, so that the boring bar can be prevented from being overhanging too long and the vibration of the boring bar during processing can be reduced. The first wear-resistant sleeve and the second wear-resistant sleeve have good supporting rigidity, the rough processing cutting amount is large, the fine processing accuracy is controllable, and the processing quality of the hole is good.

[0021] The first wear-resistant sleeve of the first support member is fixed by a positioning cone sleeve, and one end of the support seat of the second support member is positioned by a hole and the other end is fixed by a locking cone sleeve, which has good positioning accuracy, reliable connection, and convenient and quick assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the assembly of the utility model and the workpiece;

[0023] Figure 2 It is a top view of the assembly of the utility model and the workpiece;

[0024] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0025] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0026] Figure 5 for Figure 2 Enlarged schematic diagram of point C in the middle. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The reference numerals in the drawings of the specification include:

[0029] Boring bar 1, universal coupling 11, tool 12;

[0030] The first support member 2, the limiting block 21, the oil hole 211, the first wear-resistant sleeve 22, the oil outlet hole 221, the limiting cover plate 23, the first sealing ring 231, the positioning cover plate 24, the oil injection hole 241, and the positioning cone sleeve 25;

[0031] The second support member 3, the support seat 31, the support block 32, the through hole 321, the oil filling port 322, the second wear-resistant sleeve 33, the oil outlet 331, the limit plate 34, the second sealing ring 341, the locking cone sleeve 35, and the locking cover plate 36;

[0032] Workpiece 4, deep hole 41, mounting hole 42. Example

[0033] like Figure 1-2 The workpiece 4 shown includes three series of holes, each of which has an axial length of 1930 mm. The right side of the workpiece 4 includes a mounting hole 42. In order to process a deep hole 41 on the workpiece 4, the utility model discloses a deep hole precision boring tool, including a boring bar 1 and a first support member 2 and a second support member 3 for supporting the boring bar 1.

[0034] like Figure 1 and 3 As shown, the first support member 2 includes a limit member and a positioning member, the limit member includes a limit block 21 and a limit cover plate 23, an installation groove is formed in the limit block 21, a first wear-resistant sleeve 22 is arranged in the installation groove, the first wear-resistant sleeve 22 is made of copper alloy material, the limit cover plate 23 is fixed to the right end of the limit block 21 by screws, so that the first wear-resistant sleeve 22 is fixed in the installation groove; the positioning member is used to detachably fix the limit member at the mouth of the deep hole 41 of the workpiece 4, the positioning member includes a positioning cover plate 24 and a positioning cone sleeve 25, the positioning cover plate 24 is fixed to the left end face of the limit block 21 by bolts, the positioning cover plate 24 presses the positioning cone sleeve 25 between the workpiece 4 and the limit block 21, so that the positioning cone sleeve 25 is tightly fitted with the inner wall of the deep hole 41 to be processed in the workpiece 4 and the outer wall of the limit block 21; the assembly of the first support member 2 is simple and quick, and the first wear-resistant sleeve 22 is positioned and locked by the positioning cone sleeve 25, with high positioning accuracy, which is beneficial to improving the processing quality of the hole.

[0035] like Figure 3 As shown, an oil filling hole 241 is provided on the positioning cover plate 24, an oil through hole 211 is provided on the limit block 21, an oil outlet hole 221 and an annular groove connected to the oil outlet hole 221 are provided on the first wear-resistant sleeve 22, and the oil filling hole 241, the oil through hole 211 and the oil outlet hole 221 are interconnected to form a first oil filling channel; a first sealing ring 231 is provided between the positioning cover plate 24 and the first wear-resistant sleeve 22, and the first sealing ring 231 is used to prevent lubricating oil from penetrating into the interior of the workpiece 4.

[0036] like Figure 1 , 2 As shown, the second support member 3 is installed in the installation hole 42 of the workpiece 4. The second support member 3 includes a support seat 31. One end of the support seat 31 is fixed to the rear end surface of the workpiece 4 by bolts, and the other end of the support seat 31 is fixed to the front end surface of the workpiece 4 by a locking device. Figure 5 As shown, the locking device includes a locking cone sleeve 35 and a locking cover plate 36. The locking cover plate 36 is fixed to the front end surface of the workpiece 4 by screws. The locking cover plate 36 presses the locking cone sleeve 35 into the gap between the workpiece 4 and the support seat 31, so that the locking cone sleeve 35 is tightly fitted with the inner wall of the workpiece 4 and the outer wall of the support seat 31; the two ends of the support seat 31 are respectively positioned by holes and locked by the locking cone sleeve 35, and the positioning accuracy is good.

[0037] like Figure 3 As shown, a support block 32 is formed on the support seat 31, and at least one through hole 321 is provided on the support block 32. In this embodiment, three through holes 321 are provided, and the three through holes 321 correspond to the positions of the three deep holes 41 to be processed of the workpiece 4, respectively. A second wear-resistant sleeve 33 is provided in each through hole 321, and the second wear-resistant sleeve 33 is made of copper alloy material. Three limiting plates 34 are fixed on the support block 32 by screws, and the three limiting plates 34 respectively fix the three second wear-resistant sleeves 33 in the through holes 321; Figure 4 As shown, three oil filling ports 322 are provided on the support block 32, and each second wear-resistant sleeve 33 is provided with an oil outlet 331 and an annular groove connected to the oil outlet 331, and the oil filling ports 322 and the oil outlet 331 of corresponding positions are connected to each other to form a second oil filling channel; a second sealing ring 341 is provided between the limit plate 34 and the second wear-resistant sleeve 33, and the second sealing ring 341 is used to prevent lubricating oil from penetrating into the interior of the workpiece 4; the second support member 3 is easy and quick to assemble, and the connection is reliable, which can improve the processing quality of the hole of the workpiece 4.

[0038] When processing the deep hole 41 of the workpiece 4, the workpiece 4 is mounted on the workbench of the machine tool, the first support member 2 is mounted at the opening of the deep hole 41 to be processed, and the second support member 3 is mounted in the mounting hole 42 of the workpiece 4; Figure 1 , 2 As shown, one end of the boring bar 1 is connected to a universal coupling 11, and the boring bar 1 is installed on the machine tool spindle through the universal coupling 11. The workpiece 4 is moved through the workbench to allow the free end of the boring bar 1 to pass through the first wear-resistant sleeve 22 and the second wear-resistant sleeve 33 in sequence, and then the tool 12 is installed on the boring bar 1 through the hole at the upper end of the workpiece 4. The tool is used to process the deep hole 41 of the workpiece 4. After the tool 12 is installed, the boring bar 1 and the tool 12 can be driven to rotate by the machine tool spindle, and the workpiece 4 can be driven to move by the workbench to achieve boring processing of the deep hole 41 of the workpiece 4. During the processing, lubricating oil is transported between the first wear-resistant sleeve 22 and the boring bar 1 through the first oil injection channel, and lubricating oil is transported between the second wear-resistant sleeve 33 and the boring bar 1 through the second oil injection channel.

[0039] The utility model adopts a through-boring method to process a deep hole 41 of a workpiece 4, and supports the two sides of a boring bar 1 respectively through the first support member 2 and the second support member 3, so as to avoid the boring bar 1 from being overhanging too long and reduce the vibration of the boring bar 1 during processing. The first wear-resistant sleeve 22 and the second wear-resistant sleeve 33 have good supporting rigidity, a large amount of cutting in rough processing, controllable precision of fine processing, and good processing quality of the hole; and the first support member 2 and the second support member 3 are convenient and quick to install and operate, and a series of coaxial deep holes 41 can be processed in one installation, thereby effectively improving the processing efficiency of the workpiece 4.

[0040] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A deep hole precision boring tool, characterized in that: The invention comprises a boring bar and a first support member and a second support member for supporting the boring bar; The first support member includes a limit member and a positioning member, wherein a first wear-resistant sleeve is arranged inside the limit member, and the positioning member is used to detachably fix the limit member at the opening of the deep hole of the workpiece; The second support member comprises a support seat, which is detachably fixedly mounted on a side of the workpiece away from the deep hole opening, and a support block is arranged on the support seat, and at least one through hole is arranged on the support block, and a second wear-resistant sleeve is arranged in each through hole; A universal coupling is provided at one end of the boring bar. During processing, the universal coupling is installed on the machine tool. The other end of the boring bar passes through the first wear-resistant sleeve and the second wear-resistant sleeve in sequence. The machine tool can drive the boring bar to rotate in the first wear-resistant sleeve and the second wear-resistant sleeve. The boring bar is provided with a tool for processing deep holes in the workpiece. The first support member and the second support member are respectively provided with a first oil injection channel and a second oil injection channel. The first oil injection channel is used to transport lubricating oil between the first wear-resistant sleeve and the boring bar, and the second oil injection channel is used to transport lubricating oil between the second wear-resistant sleeve and the boring bar.

2. A deep hole precision boring tool according to claim 1, characterized in that: The limit member is located in the deep hole of the workpiece, and the limit member includes a limit block and a limit cover plate that are detachably fixedly connected. The limit block is provided with an installation groove, and the limit cover plate fixes the first wear-resistant sleeve in the installation groove; the positioning member includes a positioning cover plate and a positioning cone sleeve. The positioning cover plate is detachably fixed on the end face of the limit block, and the positioning cover plate makes the positioning cone sleeve fit tightly with the inner wall of the deep hole of the workpiece and the outer wall of the limit block.

3. A deep hole precision boring tool according to claim 2, characterized in that: The positioning cover plate is provided with an oil filling hole, the limit block is provided with an oil through hole, and the first wear-resistant sleeve is provided with an oil outlet hole. The oil filling hole, the oil through hole and the oil outlet hole are interconnected to form a first oil filling channel; a first sealing ring is provided between the positioning cover plate and the first wear-resistant sleeve, and the first sealing ring is used to prevent lubricating oil from penetrating into the workpiece.

4. A deep hole precision boring tool according to claim 1, characterized in that: At least one limiting plate is detachably fixedly mounted on the support block, and the limiting plate fixes the second wear-resistant sleeve in the through hole.

5. A deep hole precision boring tool according to claim 4, characterized in that: The support block is provided with at least one oil filling port, the second wear-resistant sleeve is provided with an oil outlet, the oil filling port and the oil outlet are interconnected to form a second oil filling channel; a second sealing ring is provided between the limit plate and the second wear-resistant sleeve, and the second sealing ring is used to prevent lubricating oil from penetrating into the workpiece.

6. A deep hole precision boring tool according to claim 1, characterized in that: One end of the support seat is threadedly connected to the end surface of the workpiece, and the other end of the support seat is fixed to the other end surface of the workpiece by a locking device. The locking device includes a locking cone sleeve and a locking cover plate. The locking cover plate is detachably fixed to the workpiece, and the locking cover plate makes the locking cone sleeve fit tightly with the inner wall of the workpiece and the outer wall of the support seat.

7. A deep hole precision boring tool according to claim 1, characterized in that: The first wear-resistant sleeve and the second wear-resistant sleeve are both provided with annular grooves, and the two annular grooves are respectively connected with the first oil injection channel and the second oil injection channel.

8. A deep hole precision boring tool according to claim 1, characterized in that: The first wear-resistant sleeve and the second wear-resistant sleeve are both made of copper alloy material.