Tool bit special for deep hole drill and capable of carrying guide sleeve and machine tool

Abstract

The invention belongs to the technical field of deep hole machining, and particularly relates to a deep hole drill special tool bit capable of carrying a guide sleeve and a machine tool, the deep hole drill special tool bit comprises a tool bit body, a tool and the guide sleeve, the lower end face of the tool bit body is provided with a mounting groove allowing a tool handle of the tool to be fixedly inserted, and the guide sleeve is provided with a penetrating channel allowing the tool to penetrate. The guide sleeve is connected with an external machine frame so that the guide sleeve can be arranged on the tool in a sliding and sleeving mode, and the guide sleeve is detachably installed at the lower end of the tool bit. The machine tool has the advantages that the manufacturing cost of the machine tool is reduced, the space, occupied by a storage warehouse, of the machine tool is reduced, the time for replacing the tool bit and the guide sleeve is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of deep hole processing, in particular to a special cutter head for deep hole drilling which can be equipped with a guide sleeve and a machine tool. Background Art

[0002] In mechanical processing, when the ratio of hole depth to hole diameter is greater than 6mm, it is called a deep hole. The processing of this type of hole is particularly difficult, so a drill bit specially designed for processing deep holes, namely a deep hole drill bit, is required.

[0003] As machine tool processing technology has become increasingly mature and diversified, there is an increasing trend for machine tool automation and production line automation. Generally, vertical deep hole drilling machines equipped with automatic tool change and automatic guide sleeve change functions use two tool magazines, one for storing deep hole drill bits and the other for storing guide sleeves. This type of vertical deep hole drilling machine with two storage magazines requires two tool magazines to complete the replacement of deep hole drill bits and guide sleeves, which leads to an increase in machine tool manufacturing costs. In addition, in terms of the time required to replace deep hole drill bits and guide sleeves, it takes twice as long to complete the replacement of deep hole drill bits and guide sleeves than a single tool magazine, which greatly reduces processing efficiency.

[0004] Therefore, the prior art needs to be improved. Summary of the invention

[0005] In order to remedy the deficiencies of the prior art, the present application proposes a special cutter head for deep hole drilling and a machine tool that can be equipped with a guide sleeve.

[0006] In the first aspect, a special cutter head for deep hole drilling that can be equipped with a guide sleeve adopts the following technical solution:

[0007] A special cutter head for deep hole drilling that can be equipped with a guide sleeve comprises a cutter head, a cutter and a guide sleeve, wherein the lower end surface of the cutter head is provided with a mounting groove for fixing and inserting the cutter handle, the guide sleeve is provided with a penetration channel for the cutter to penetrate, the guide sleeve is connected to an external frame so that the guide sleeve is slidably sleeved on the cutter, and the guide sleeve is detachably mounted on the lower end of the cutter head.

[0008] Preferably, a machine screw is provided on the side wall of the cutter head, and the machine screw is inserted into the mounting groove and tightly abuts against the tool handle.

[0009] Preferably, a mounting ring groove is provided on one side wall of the mounting groove close to the guide sleeve, the notch of the mounting ring groove is connected with the notch of the mounting groove, a disassembly groove is provided on the side wall of the mounting ring groove, the cross-section of the disassembly groove is L-shaped, one end of the disassembly groove is arranged parallel to the axis of the mounting ring groove, and the other end is arranged perpendicular to the axis of the disassembly groove, and the end of the disassembly groove parallel to the axis of the mounting ring groove is connected with the notch of the mounting ring groove; a mounting block is provided on a side of the guide sleeve close to the cutter head, the mounting block is used to rotatably insert into a side of the mounting ring groove close to the notch, and an arc strip is provided on the side wall of the mounting block, and the arc strip is used to be inserted into the disassembly groove.

[0010] Preferably, a hemispherical groove is provided at the bottom of the mounting groove, the bottom of the mounting ring groove is used to abut against the mounting block, an elastic machine bolt is provided on the guide sleeve, the rod of the elastic machine screw passes through the side where the mounting block abuts against the bottom of the mounting groove, and the ball on the rod of the elastic machine screw is used to be stuck in the hemispherical groove.

[0011] Preferably, a transition hole is provided on one side of the penetration channel close to the mounting groove, and a cross-sectional area of ​​the transition hole is larger than a cross-sectional area of ​​the penetration channel.

[0012] Preferably, a boss is provided on a side of the guide sleeve away from the cutter head, and the penetration channel penetrates the boss.

[0013] In the second aspect, a machine tool adopts the following technical solution:

[0014] A machine tool comprises a frame, a spindle box, a tool magazine and a guide sleeve seat, wherein the spindle box is slidably arranged on the frame, the spindle in the spindle box is used to be connected to the tool head according to any one of claims 1 to 6, the tool magazine is arranged on the frame, and the tool magazine is used to place special tool heads for deep hole drilling, the guide sleeve seat is slidably arranged on the spindle box, a fixing ring is arranged on the guide sleeve seat, and the inner ring of the fixing ring is used to be connected to the guide sleeve so that the guide sleeve slides along the axis of the tool.

[0015] Preferably, the outer wall of the guide sleeve is provided with a snap ring groove; the outer wall of the fixing ring is provided with a pinball machine screw, and the pinball on the rod of the pinball machine screw passes through the inner wall of the fixing ring and is snapped into the snap ring groove.

[0016] Preferably, a flange is provided on a side of the outer wall of the guide sleeve away from the cutter head, and the flange is used to abut against the lower side surface of the fixing ring.

[0017] Preferably, a notch is provided on the side wall of the flange; a protrusion is provided on the side surface of the fixing ring abutting against the flange, and when the flange abuts against the fixing ring, the protrusion is inserted into the notch.

[0018] In summary, compared with the prior art, the present embodiment provides a special tool head for deep hole drilling that can be equipped with a guide sleeve and a machine tool. When deep hole processing is performed on a workpiece, the spindle box is first lifted to the tool changing position through the frame, and then the guide sleeve seat is moved to a position higher than the spindle end face, that is, the spindle passes through the fixed ring, and then the tool head is moved as a whole to the spindle end face through the tool magazine. At this time, the spindle is connected to the tool head, and then the guide sleeve seat is lowered so that the marbles on the marble machine screw on the fixed ring are clamped into the clamping ring groove, and then the spindle is rotated to make the arc strip in a Remove the part of the groove parallel to the axis of the installation groove, then lower the guide sleeve seat to drive the guide sleeve to separate from the cutter head, and finally lower the spindle box to make the bottom end of the guide sleeve close to the surface of the workpiece, so that the tool can perform deep hole processing on the workpiece. This design combines the cutter head and the guide sleeve so that the machine tool only needs a single storage library, which reduces the manufacturing cost of the machine tool and reduces the space occupied by the storage library. At the same time, the machine tool uses a single storage library to handle the operation of automatically replacing the cutter head and guide sleeve, which greatly shortens the replacement time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is an overall schematic diagram of the machine tool in the embodiment of the present application;

[0021] Figure 2 Another perspective view of the machine tool in the embodiment of the present application;

[0022] Figure 3 A cross-sectional view of a special cutter head for deep hole drilling in an embodiment of the present application;

[0023] Figure 4 This is an overall schematic diagram of the cutter head in the embodiment of the present application;

[0024] Figure 5 Another perspective view of the cutter head in the embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of a guide sleeve in an embodiment of the present application;

[0026] Figure 7 This is another perspective view made to show the bottom structure of the guide sleeve in the embodiment of the present application;

[0027] Figure 8A cross-sectional view of a guide sleeve in an embodiment of the present application;

[0028] Fig. 9 This is a schematic diagram of a fixing ring in an embodiment of the present application;

[0029] Fig.10 This is the working process of the machine tool in the embodiment of the present application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Cutter head; 11. Mounting groove; 12. Machine screw; 13. Disassembly groove; 14. Mounting ring groove; 15. Hemispherical groove; 2. Cutter; 3. Guide sleeve; 31. Through channel; 32. Mounting block; 33. Arc strip; 34. Pinball machine screw; 35. Transition hole; 36. Boss; 37. Snap ring groove; 38. Flange; 39. Notch; 4. Frame; 5. Spindle box; 6. Tool magazine; 7. Guide sleeve seat; 71. Fixing ring; 72. Bump. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present application discloses a special cutter head 1 for deep hole drilling that can carry a guide sleeve 3 .

[0033] Reference Figures 1 to 9The special cutter head 1 for deep hole drilling includes a cutter head 1, a cutter 2 and a guide sleeve 3. Specifically, the tapered part above the cutter head 1, the part for installing the rivet and the middle part for holding the cutter arm in the tool magazine 6 are the same as the prior art, so they are not described in detail in this application. A mounting groove 11 is provided at the lower end surface of the cutter head 1. The cross-section of the mounting groove 11 is circular when viewed from the groove direction, and the axial direction of the mounting groove 11 is in the vertical direction. The handle of the cutter 2 is adapted to the shape of the mounting groove 11 for insertion and installation. In this embodiment, a machine screw 12 is provided on the side wall of the cutter head 1. The machine screw 12 will be screwed in from the side wall of the cutter head 1. When the handle of the cutter 2 is inserted into the mounting groove 11, the machine screw 12 will be tightly abutted against the side wall of the handle, so that the cutter 2 is firmly installed on the cutter head. 1, and at the same time, the head of the machine screw 12 can extend into the side wall of the cutter head 1 to make the side wall of the cutter head 1 smoother. The guide sleeve 3 is cylindrical as a whole, and a penetration channel 31 is provided on the guide sleeve 3. The penetration channel 31 is coaxially arranged with the guide sleeve 3, and the penetration channel 31 is used for the tool 2 to pass through. The guide sleeve 3 is connected to the external frame 4. Under the action of the external frame 4, the guide sleeve 3 is sleeved on the tool 2 and can slide along the length direction of the tool 2. There is a predetermined gap tolerance between the guide sleeve 3 and the tool 2 to ensure the linearity of the drilling and the accuracy of the hole, and the guide sleeve 3 is detachably installed at the lower end of the cutter head 1. When the guide sleeve 3 is needed to play a guiding role during processing, the guide sleeve 3 is moved in a direction away from the cutter head 1 through the external frame 4 until the guide sleeve 3 moves to a predetermined position.

[0034] Reference Figures 1 to 8A mounting ring groove 14 is provided on one side of the mounting groove 11 near its own notch, and the notch of the mounting ring groove 14 is overlapped with the notch of the mounting groove 11, and the mounting ring groove 14 is coaxially arranged with the mounting groove 11, so that the mounting groove 11 as a whole looks stepped, and a disassembly groove 13 is provided in the side wall of the mounting ring groove 14, and the disassembly groove 13 is L-shaped from the notch direction, that is, one end of the disassembly groove 13 is perpendicular to the axis of the mounting ring groove 14, and the other end is parallel to the axis of the mounting ring groove 14, and the end of the disassembly groove 13 parallel to the axis of the mounting ring groove 14 is connected to the notch of the mounting ring groove 14; a mounting block 32 is provided on one side of the guide sleeve 3 near the mounting ring groove 14, and the mounting block 32 is integrally arranged on the guide sleeve 3, and the mounting block 32 is cylindrical, and the groove bottom of the mounting ring groove 14 is used In order to abut against the mounting block 32, an arc-shaped strip 33 is provided on the side wall of the mounting block 32, and the arc-shaped strip 33 is adapted to the shape of the demolition groove 13, that is, the length of the arc-shaped strip 33 is less than the width of the end of the demolition groove 13 parallel to the axis of the mounting ring groove 14, and the width is the same as the width of the end of the demolition groove 13 perpendicular to the axis of the mounting ring groove 14, so as to facilitate the arc-shaped strip 33 to be inserted into the demolition groove 13. At the same time, in this embodiment, the demolition groove 13 and the arc-shaped strip 33 are provided with two groups, and the two groups of arc-shaped strips 33 are symmetrically arranged at 180°. Therefore, when the guide sleeve 3 needs to be used, the cutter head 1 is rotated to rotate the arc-shaped strip 33 to the connection between the two parts of the demolition groove 13, and then the guide sleeve 3 is directly slid down to the predetermined position through the external frame 4, so that the cutter head 1 and the guide sleeve 3 correspond one to one, which is convenient for use.

[0035] In order to improve the stability of the guide sleeve 3 installed on the cutter head 1, the removal groove 13 is arranged on the side wall of the mounting ring groove 14, and a hemispherical groove 15 is arranged at the bottom of the mounting ring groove 14. There are two hemispherical grooves 15, and the two hemispherical grooves 15 are symmetrically arranged along the axis of the mounting ring groove 14. Two elastic machine screws 12 are correspondingly penetrated on the guide sleeve 3. The marbles at the front ends of the two elastic machine screws 12 will extend from the mounting block 32. When the guide sleeve 3 is installed on the cutter head 1, the marbles of the two elastic machine screws 12 will be respectively stuck in the two hemispherical grooves 15 to prevent the guide sleeve 3 from rotating by itself and separating from the cutter head 1, thereby further improving the stability of the connection between the guide sleeve 3 and the cutter head 1.

[0036] In this embodiment, a boss 36 is provided on a side of the guide sleeve 3 away from the mounting block 32 . The boss 36 is provided to prevent the bottom of the guide sleeve 3 from contacting the surface of the workpiece when the workpiece is being processed.

[0037] At the same time, in order to facilitate the tool 2 to pass through the guide sleeve 3, a transition hole 35 is provided at the front end of the penetration channel 31 of the guide sleeve 3, that is, the transition hole 35 is provided on the side close to the mounting groove 11, and from the direction of the hole mouth, the cross-sectional area of ​​the transition hole 35 is larger than the penetration channel 31, and the transition hole 35 is connected to the penetration channel 31 through a tapered hole, so when the guide sleeve 3 is sleeved on the tool 2, the tool 2 can be inserted into the transition hole 35 first. Since the cross-sectional area of ​​the transition hole 35 is larger than the penetration channel 31, the tool 2 can be more conveniently introduced into the penetration channel 31.

[0038] The embodiment of the present application also discloses a machine tool.

[0039] Reference Figures 1 to 9 The machine tool includes a frame 4, a spindle box 5, a tool magazine 6 and a guide sleeve seat 7. Specifically, the spindle box 5 is slidably arranged on the frame 4. The spindle in the spindle box 5 is used to connect with the tool head 1 so that the tool head 1 can move in the vertical direction. The tool magazine 6 is arranged on the frame 4, and the tool magazine 6 is arranged on one side of the spindle box 5. The tool magazine 6 is a swing arm type tool magazine 6. The tool magazine 6 is used to place a special tool head 1 for deep hole drilling. The tool magazine 6 is used to bring the tool 2 into the spindle to realize processing and tool changing operations. The guide sleeve seat 7 is arranged on the spindle box 5. The guide sleeve seat 7 can slide on the spindle box 5 along the vertical direction, and the guide sleeve seat 7 is arranged on the lower side of the spindle. A fixing ring 71 is arranged on the guide sleeve seat 7. The fixing ring 71 is in a circular ring shape. A flange 38 is arranged on the outer side of the fixing ring 71. The fixing connection between the fixing ring 71 and the guide sleeve seat 7 is realized by the flange 38 and screws. The inner wall of the fixing ring 71 is used to connect with the guide sleeve 3, so that the guide sleeve 3 moves up and down along the tool 2.

[0040] A plurality of pinball machine screws 34 are provided on the fixed ring 71, and the pinball at the front end of the pinball machine screw 34 will penetrate into the inner wall of the fixed ring 71, and the plurality of pinball machine screws 34 are evenly distributed, and a snap ring groove 37 is provided on the side wall of the guide sleeve 3, and the snap ring groove 37 is used for inserting the pinball machine screw 34 on the fixed ring 71. After the pinball on the pinball machine screw 34 is inserted into the snap ring groove 37, the guide sleeve 3 can be driven to move by moving the guide sleeve seat 7.

[0041] A flange 38 is provided on the outer wall of the guide sleeve 3. The flange 38 is provided on the side of the guide sleeve 3 away from the mounting block 32. When the guide sleeve 3 is connected to the guide sleeve seat 7, the flange 38 on the guide sleeve 3 will abut against the lower side of the fixing ring 71, thereby preventing the guide sleeve 3 from moving upward during workpiece processing.

[0042] In addition, in the present embodiment, a protrusion 72 is provided on one side surface where the fixing ring 71 abuts against the flange 38 on the guide sleeve 3, and a notch 39 is provided on the side of the flange 38 of the guide sleeve 3. The shape of the notch 39 is adapted to the protrusion 72. When the flange 38 on the guide sleeve 3 abuts against the fixing ring 71, the protrusion 72 will be inserted into the notch 39 of the flange 38. Therefore, when the guide sleeve 3 is installed back on the cutter head 1, the spindle needs to drive the cutter head 1 to select so that the arc strip 33 is inserted into the depth of the disassembly groove 13. By setting the protrusion 72 and the notch 39, it can be avoided that the guide sleeve 3 rotates together when the cutter head 1 rotates.

[0043] The machine tool provided by the present invention refers to Figures 1 to 10 When deep hole processing is performed on the workpiece, the spindle box 5 is first moved upward to the tool changing position through the frame 4, and the guide sleeve seat 7 is moved to a position higher than the end face of the spindle, that is, the spindle will pass through the fixed ring 71, and then the deep hole drilling special cutter head 1 is connected to the spindle through the tool arm of the tool magazine 6, and then the guide sleeve seat 7 is lowered to make the fixed ring 71 abut against the flange 38 on the guide sleeve seat 7. At this time, the marbles at the front ends of the multiple marble machine screws 34 on the fixed ring 71 will be stuck in the clamping ring groove 37 on the outer wall of the guide sleeve 3, so that the guide sleeve seat 7 is fixedly connected to the guide sleeve 3, and then the spindle is used to rotate with the cutter head 1, so that the arc strip 33 on the guide sleeve 3 faces the opening of the demolition groove 13, and then the guide sleeve seat 7 is lowered to make the guide sleeve seat 7 drives the guide sleeve 3 to leave the tool head 1 and descend to a predetermined position, and finally descends the spindle box 5 to make the lower end of the guide sleeve 3 close to the surface of the workpiece, so that the guide sleeve 3 guides the tool 2 to perform deep hole processing on the workpiece. In this design, the tool head 1 is connected with the guide sleeve 3. During processing, the tool head 1 and the guide sleeve 3 are synchronously connected to the spindle through the tool magazine 6, and the guide sleeve 3 is separated from the tool head 1 by rotating the spindle and moving the guide sleeve seat 7. In this way, the machine tool only needs a single storage library, which reduces the manufacturing cost of the machine tool and the space occupied by the storage library. At the same time, using a single storage library for processing and replacing the tool head 1 and the guide sleeve 3 can shorten the replacement time, thereby improving production efficiency.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special cutter head for deep hole drilling that can be equipped with a guide sleeve, characterized in that: The utility model comprises a cutter head, a tool and a guide sleeve. The lower end surface of the cutter head is provided with a mounting groove for fixing and inserting the tool handle. The guide sleeve is provided with a passing channel for passing the tool. The guide sleeve is connected to an external frame so that the guide sleeve can be slidably mounted on the tool, and the guide sleeve can be detachably mounted on the lower end of the cutter head.

2. The deep hole drill bit capable of carrying a guide sleeve according to claim 1, characterized in that: A machine screw is arranged on the side wall of the cutter head, and the machine screw penetrates into the mounting groove and is in close contact with the handle of the cutter.

3. The special cutter head for deep hole drilling that can be equipped with a guide sleeve according to claim 1, characterized in that: A mounting ring groove is provided on one side wall of the mounting groove close to the guide sleeve, and the notch of the mounting ring groove is connected with the notch of the mounting groove. A dismantling groove is provided on the side wall of the mounting ring groove, and the cross-section of the dismantling groove is L-shaped. One end of the dismantling groove is arranged parallel to the axis of the mounting ring groove, and the other end is arranged perpendicular to the axis of the dismantling groove. The end of the dismantling groove parallel to the axis of the mounting ring groove is connected with the notch of the mounting ring groove; a mounting block is provided on a side of the guide sleeve close to the cutter head, and the mounting block is used to rotatably insert into a side of the mounting ring groove close to the notch, and an arc strip is provided on the side wall of the mounting block, and the arc strip is used to be inserted into the dismantling groove.

4. The special cutter head for deep hole drilling that can be equipped with a guide sleeve according to claim 3, characterized in that: A hemispherical groove is provided at the bottom of the mounting groove, and the bottom of the mounting ring groove is used to abut against the mounting block. An elastic machine bolt is provided on the guide sleeve, and the rod of the elastic machine screw passes through the side where the mounting block abuts against the bottom of the mounting groove, and the marble on the rod of the elastic machine screw is used to be stuck in the hemispherical groove.

5. The special cutter head for deep hole drilling that can be equipped with a guide sleeve according to claim 1, characterized in that: A transition hole is provided on one side of the penetration channel close to the mounting groove, and a cross-sectional area of ​​the transition hole is larger than a cross-sectional area of ​​the penetration channel.

6. The special cutter head for deep hole drilling that can be equipped with a guide sleeve according to claim 1, characterized in that: A boss is arranged on one side of the guide sleeve away from the cutter head, and the penetration channel penetrates the boss.

7. A machine tool, characterized in that: It includes a frame, a spindle box, a tool magazine and a guide sleeve seat, the spindle box is slidably set on the frame, the spindle in the spindle box is used to connect with the tool head described in any one of claims 1-6, the tool magazine is set on the frame, the tool magazine is used to place special tool heads for deep hole drilling, the guide sleeve seat is slidably set on the spindle box, a fixing ring is set on the guide sleeve seat, the inner ring of the fixing ring is used to connect with the guide sleeve so that the guide sleeve slides along the tool axis.

8. A machine tool according to claim 7, characterized in that: The outer wall of the guide sleeve is provided with a clamping ring groove; the outer wall of the fixing ring is provided with a pinball machine screw, and the pinball on the rod of the pinball machine screw passes through the inner wall of the fixing ring and is clamped in the clamping ring groove.

9. A machine tool according to claim 7, characterized in that: A flange is provided on a side of the outer wall of the guide sleeve away from the cutter head, and the flange is used to abut against the lower side of the fixing ring.

10. A machine tool according to claim 9, characterized in that: The side wall of the flange is provided with a notch; the side surface of the fixing ring that abuts against the flange is provided with a protrusion, and when the flange abuts against the fixing ring, the protrusion is inserted into the notch.

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