Integral hard alloy gun drill
By introducing structures such as fixed blocks, limit rings and chip drains into the integral carbide gun drill, the problem of easy breakage of the knife and drill connection is solved, and the stable connection and chip management is achieved when processing hard materials are achieved, ensuring the gun Drilling works normally.
Patent Information
- Application Number
- CN202421295026.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-06-07
AI Technical Summary
When processing harder materials, the knife drills are easily broken due to instant resistance when the traditional integral carbide gun drills are processed, which cannot meet the processing needs.
An integral carbide gun drill structure including a fixed block, a knife handle, a limit ring, a short rod, an insert hole and a fixed sleeve is designed. The connection stability of the gun drill and a knife handle is enhanced through the design of a bolt connection and a limit ring. A chip drain is also provided on the outer surface of the gun drill to prevent chips from affecting rotation.
It effectively avoids damage to the connection between the gun drill and the knife handle, ensures uniform dispersion of force and stability of the connection when cutting hard materials, and prevents chips from being disengaged through the inclined cutting block, maintaining the normal rotation of the gun drill.
Smart Images
Figure CN222133552U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gun drills, in particular to an integral hard alloy gun drill. Background Art
[0002] Gun drill is an effective deep hole processing tool. In deep hole processing with strict tolerance and surface roughness requirements, gun drill can ensure the size accuracy, position accuracy and straightness of the hole. The application specifications of solid carbide gun drills in the industry are generally from 0.7MM to 12MM, among which 1.0~4MM is particularly widely used.
[0003] Some equipment on the market generally has a guide block integrally formed on the tool arbor, and by molding the guide block according to preset specifications, it solves the problem that the tool arbor support force of traditional solid carbide gun drills is poor when processing small apertures and long deep holes, making it impossible for the cutter head to get strong support to meet the established processing feed requirements.
[0004] However, in actual use, the above equipment rotates at high speed when the gun drill is drilling. The instantaneous resistance generated when the gun drill body contacts the harder material may easily cause the connection welding between the gun drill body and the handle to break. In view of this, we propose a solid carbide gun drill. Utility Model Content
[0005] The purpose of the utility model is to provide a whole carbide gun drill to solve the problems raised in the above background technology.
[0006] To achieve the above object, the utility model provides the following technical solution: an integral carbide gun drill, comprising a gun drill body, one end of the gun drill body is fixedly connected to a fixing block, the outer surface of the fixing block is clamped with a handle, the outer surface of the handle is provided with a mounting groove, a bolt is arranged inside the mounting groove, and the outer surface of the gun drill body is provided with a stabilizing structure, the stabilizing structure includes:
[0007] A limiting ring is fixedly connected to the outer surface of the gun drill body near the handle, and a short rod is fixedly connected to one side of the limiting ring;
[0008] An embedding hole is provided at one end of the knife handle near the limiting ring, a short rod is clamped inside the embedding hole, and a fixing sleeve is threadedly connected to the outer surface of the knife handle near the embedding hole.
[0009] Preferably, the short rods are evenly distributed in a circular array on one side of the limiting ring close to the handle, and the positions of the short rods correspond to the positions of the embedding holes, which can enable the short rods to be better installed inside the embedding holes.
[0010] Preferably, the size of the interior of the fixing sleeve is compatible with the size of the gun drill body and the limiting ring, and one end of the bolt passes through the mounting groove and the fixing block to the inside of the handle, which can enable the bolt to limit the fixing block inside the handle.
[0011] Preferably, the position of the fixing block corresponds to the position of the bolt, and the size of the fixing block matches the size of the inside of the handle, which can make the fixing block better installed inside the handle.
[0012] Preferably, a placement groove is provided on the outer surface of the gun drill body, a limiting groove is provided on the bottom of the inner wall of the placement groove, a limiting block is clamped inside the limiting groove, and a cutting block is fixedly connected to one end of the limiting block.
[0013] Preferably, the limiting block is convex, the upper surface of the cutting block is provided with an inclined surface, and the size of the cutting block is adapted to the size of the placement groove.
[0014] Compared with the prior art, the utility model provides a solid carbide gun drill having the following
[0015] Beneficial effects:
[0016] 1. In order to prevent the resistance generated when the gun drill cuts harder materials from damaging the connection between the gun drill and the handle, when one end of the gun drill body is inserted into the handle, the short rod is simultaneously inserted into the embedding hole provided at one end of the handle, and the short rods are evenly distributed in a circular array on one side of the limit ring close to the handle, and then a fixing sleeve is used to threadably connect with the external thread provided at one end of the handle, so that the fixing sleeve limits the limit ring, which allows the short rod to be well limited in the embedding hole and also strengthens the connection between the gun drill body and the handle. In this way, when the gun drill body is cutting harder objects, the short rod can evenly disperse the force at the handle, so that the connection between the gun drill body and the handle is not easily damaged.
[0017] 2. In order to prevent the longer chips from affecting the operation of the gun drill, the whole carbide gun drill is configured such that when the gun drill body is cutting, the chips are discharged along the chip grooves provided on the outer surface of the gun drill body. Some of the longer chips will be entangled on the outer surface of the gun drill body. At this time, the centrifugal force generated by the high-speed rotation of the gun drill body will throw the cutting block out of the placement groove. At the same time, the upper surface of the limit block fixedly connected to the bottom of the cutting block will fit the top of the inner wall of the limit groove, which can prevent the cutting block from completely leaving the placement groove. The upper surface of the cutting block is provided with an inclined surface, which enables the cutting block to cut off the longer chips as the gun drill body rotates, so that the longer cutting will not affect the rotation of the gun drill body. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1This is a schematic diagram of the three-dimensional left-view structure of the utility model;
[0019] Figure 2 This is an explosion diagram of the utility model;
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the gun drill body of the utility model;
[0021] Figure 4 This is an enlarged structural diagram of the A area of the utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the cutting block of the utility model.
[0023] In the figure: 1. gun drill body; 2. fixing block; 3. tool handle; 4. mounting groove; 5. bolt; 6. limiting ring; 7. short rod; 8. embedding hole; 9. fixing sleeve; 10. placement groove; 11. limiting groove; 12. limiting block; 13. cutting block. DETAILED DESCRIPTION
[0024] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: an integral carbide gun drill, comprising a gun drill body 1, one end of the gun drill body 1 is fixedly connected with a fixing block 2, the position of the fixing block 2 corresponds to the position of the bolt 5, the size of the fixing block 2 is adapted to the size of the inside of a handle 3, the outer surface of the fixing block 2 is clamped with the handle 3, the outer surface of the handle 3 is provided with a mounting groove 4, the mounting groove 4 is provided with a bolt 5, one end of the bolt 5 is arranged to penetrate the mounting groove 4 and the fixing block 2 to the inside of the handle 3, the outer surface of the gun drill body 1 is provided with a stabilizing structure, the stabilizing structure comprises a limiting ring 6, a short rod 7, an embedding hole 8 and a fixing sleeve 9.
[0025] In an embodiment of the utility model, a limit ring 6 is fixedly connected to the outer surface of the gun drill body 1 near the handle 3, and a short rod 7 is fixedly connected to one side of the limit ring 6. The short rods 7 are evenly distributed in a circular array on one side of the limit ring 6 near the handle 3. The position of the short rod 7 corresponds to the position of the embedding hole 8, which allows the short rod 7 to be better installed inside the embedding hole 8. An embedding hole 8 is provided at one end of the handle 3 near the limit ring 6, and the short rod 7 is clamped inside the embedding hole 8. A fixing sleeve 9 is threadedly connected to the outer surface of the handle 3 near the embedding hole 8. The size of the interior of the fixing sleeve 9 is adapted to the size of the gun drill body 1 and the limit ring 6. A placement groove 10 is provided on the outer surface of the gun drill body 1, and a limit groove 11 is provided at the bottom of the inner wall of the placement groove 10. A limit block 12 is clamped inside the limit groove 11, and the limit block 12 is The convex shape is set, so that the upper surface of the limit block 12 fixedly connected to the bottom of the cutting block 13 will fit the top of the inner wall of the limit groove 11, which can prevent the cutting block 13 from completely leaving the placement groove 10. The cutting block 13 is fixedly connected to one end of the limit block 12, and the upper surface of the cutting block 13 is provided with an inclined surface. The size of the cutting block 13 is adapted to the size of the placement groove 10. When the gun drill body 1 is cutting, the chips are discharged along the chip groove provided on the outer surface of the gun drill body 1, and some of the longer chips will be entangled on the outer surface of the gun drill body 1. At this time, the centrifugal force generated by the high-speed rotation of the gun drill body 1 will throw the cutting block 13 out of the placement groove 10, so that the cutting block 13 cuts off the longer chips as the gun drill body 1 rotates, so that the longer cutting will not affect the rotation of the gun drill body 1.
[0026] In the utility model, when in use, one end of the gun drill body 1 is inserted into the handle 3, and then one end of the bolt 5 is used to penetrate the fixing block 2 to the handle 3, which can make the gun drill body 1 initially limited, and when one end of the gun drill body 1 is inserted into the handle 3, the short rod 7 is simultaneously inserted into the embedding hole 8 provided at one end of the handle 3, and the short rod 7 is evenly distributed in a circular array on the side of the limiting ring 6 close to the handle 3, and then the fixing sleeve 9 is used to threadably connect with the external thread provided at one end of the handle 3, so that the fixing sleeve 9 limits the limiting ring 6, which makes the short rod 7 well limited in the embedding hole 8 and can also strengthen the connection between the gun drill body 1 and the handle 3, so that when the gun drill body 1 is cutting harder objects, the short rod 7 can evenly disperse the force at the handle 3, so that the connection between the gun drill body 1 and the handle 3 is not easily damaged.
[0027] Furthermore, when the gun drill body 1 is cutting, the chips are discharged along the chip grooves provided on the outer surface of the gun drill body 1, and some of the longer chips will be entangled on the outer surface of the gun drill body 1. At this time, the centrifugal force generated by the high-speed rotation of the gun drill body 1 will throw the cutting block 13 out of the placement groove 10, and at the same time, the upper surface of the limiting block 12 fixedly connected to the bottom of the cutting block 13 will fit the top of the inner wall of the limiting groove 11, which can prevent the cutting block 13 from completely leaving the placement groove 10. The upper surface of the cutting block 13 is provided with an inclined surface, which enables the cutting block 13 to cut off longer chips as the gun drill body 1 rotates, so that longer cutting will not affect the rotation of the gun drill body 1.
[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A solid carbide gun drill, comprising a gun drill body (1), one end of the gun drill body (1) is fixedly connected to a fixing block (2), the outer surface of the fixing block (2) is clamped with a handle (3), the outer surface of the handle (3) is provided with a mounting groove (4), a bolt (5) is arranged inside the mounting groove (4), and the characteristics are: The outer surface of the gun drill body (1) is provided with a stabilizing structure, and the stabilizing structure comprises: A limiting ring (6), the outer surface of the gun drill body (1) being fixedly connected to the limiting ring (6) near the handle (3), and a short rod (7) being fixedly connected to one side of the limiting ring (6); An embedding hole (8), wherein one end of the knife handle (3) is provided with an embedding hole (8) near the limiting ring (6), a short rod (7) is clamped inside the embedding hole (8), and a fixing sleeve (9) is threadedly connected to the outer surface of the knife handle (3) near the embedding hole (8).
2. A solid carbide gun drill according to claim 1, characterized in that: The short rods (7) are evenly distributed in a circular array on one side of the limiting ring (6) close to the knife handle (3), and the positions of the short rods (7) correspond to the positions of the embedding holes (8).
3. The solid carbide gun drill according to claim 1, characterized in that: The size of the interior of the fixing sleeve (9) is adapted to the size of the gun drill body (1) and the limiting ring (6), and one end of the bolt (5) is arranged to penetrate the mounting groove (4) and the fixing block (2) to the interior of the handle (3).
4. The solid carbide gun drill according to claim 1, characterized in that: The position of the fixing block (2) corresponds to the position of the bolt (5), and the size of the fixing block (2) matches the size of the interior of the knife handle (3).
5. The solid carbide gun drill according to claim 1, characterized in that: The outer surface of the gun drill body (1) is provided with a placement groove (10), the bottom of the inner wall of the placement groove (10) is provided with a limiting groove (11), a limiting block (12) is clamped inside the limiting groove (11), and a cutting block (13) is fixedly connected to one end of the limiting block (12).
6. The solid carbide gun drill according to claim 5, characterized in that: The limiting block (12) is arranged in a convex shape, and the upper surface of the cutting block (13) is provided with an inclined surface. The size of the cutting block (13) is adapted to the size of the placement groove (10).