Gun drill lengthening bar
By designing a gun drill extension that includes an auger-shaped diverter and an inclined guide, the problem of excessive time required for cooling oil or chip oil to impact blocked chips is solved, improving drilling stability and preventing The rod body is separated from the gun drill.
Patent Information
- Application Number
- CN202421524315.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-07-01
AI Technical Summary
During gun drilling, cooling oil or chip oil takes too much time to impact blocked chips, affecting the stability of the drilling hole.
A gun drill extension rod is designed, which includes an extension rod body, a diverter part and a guide part. The diverter is in the shape of an auger, with a drainage groove on the outer surface to form a vortex to accelerate the oil flow; the inner wall of the guide is tilted to promote the oil flow to quickly enter the oil hole.
By accelerating the flow of cooling oil or chip oil, the time required to impact blocked chips is reduced, the stability of drilling is improved, and the separation of the rod body from the gun drill caused by excessive impact of the cooling oil or chip oil is prevented. .
Smart Images
Figure CN222370454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gun drill processing, in particular to a gun drill extension rod. Background Art
[0002] Gun drilling was first developed to meet the needs of processing gun barrels. Before the advent of this process, gun barrels were processed by metal strips wrapped and welded on a mandrel. With the continuous development and improvement of gun drilling processing equipment, the ability of gun drilling to process small diameter precision deep holes has made it widely used in energy, automotive, aviation, mold and other industries.
[0003] Some equipment on the market is generally clamped on the spindle through the driving end, and the fixed end extends into the chip removal box. The shank of the gun drill is fixed by using an ER clamp or screw locking method, allowing the oil pressure to extend forward from the spindle position to the gun drill, and cooling oil or cutting oil is delivered to the inner cooling hole of the gun drill through the oil holes with larger apertures, thereby increasing the oil pressure, ensuring smooth chip removal, and avoiding tool jamming.
[0004] However, in actual use of the above-mentioned equipment, when the chips are blocked in the chip removal holes set on the outer surface of the gun drill, the cooling oil or chip oil will pause for a period of time, and then a greater pressure is needed to flush out the blocked chips, which will affect the drilling stability of the gun drill on the object; in view of this, we propose a gun drill extension rod. Utility Model Content
[0005] The purpose of the utility model is to provide a gun drill extension rod to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gun drill extension rod, comprising an extension rod body, a mounting groove is provided at one end of the extension rod body, a bolt is provided on the outer surface of the extension rod body, a clamping block is fixedly connected to the inner wall of the mounting groove, a gun drill body is clamped inside the mounting groove, a clamping groove is provided on the outer surface of the gun drill body, an oil hole is provided at one end of the gun drill body, an acceleration structure is provided inside the extension rod body, and the acceleration structure includes:
[0007] A guide groove, wherein the inner wall of the extension rod is provided with a guide groove, the guide groove is arranged in a spiral shape, a flow divider is fixedly connected to the inner wall of the extension rod, the flow divider is arranged in a spiral shape, and a drainage groove is arranged on the outer surface of the flow divider;
[0008] A guide member is fixedly connected to the inner wall of the extension rod near the mounting groove, the guide member is arranged in a circular ring shape, and the inner wall of the guide member is arranged in an inclined shape.
[0009] Preferably, the size of the diverter is matched with the size of the extended rod body, and the diverter and the guide groove are staggered, which can make the diverter cooperate with the guide groove to make the cooling oil or chip oil flow faster.
[0010] Preferably, the card block is arranged inside the card slot, and the position of the card block corresponds to the position of the card slot, so that the card block can be well inserted into the card slot.
[0011] Preferably, one end of the bolt is arranged to penetrate the outer surface of the extension rod to the inside of the gun drill body, and the size of the gun drill body is adapted to the size of the mounting groove, so that the Haas gun drill body can be better installed in the mounting groove.
[0012] Preferably, a movable groove is provided on the outer surface of the extension rod near the bolt, a limiting member is clamped inside the movable groove, and a double-threaded rod is threadedly connected to one side of the limiting member.
[0013] Preferably, the limiting member is arranged in a V shape, and the size of the interior of the limiting member is adapted to the outer surface of the bolt.
[0014] Compared with the prior art, the utility model provides a gun drill extension rod, which has the following beneficial effects:
[0015] 1. In order to prevent the cooling oil or chip oil from taking too much time to impact the blocked chips and thus affecting the stability of drilling, the cooling oil or chip oil will contact the diverter through the inside of the extended rod body. The diverter is arranged in a spiral shape, and a drainage groove is provided on the outer surface of the diverter, which can form a vortex when the cooling oil or chip oil passes through the inside of the extended rod body, allowing the cooling oil or chip oil to contact the inner wall of the guide more quickly. The inner wall of the guide is inclined, so that the cooling oil or chip oil can better enter the oil hole, thereby effectively preventing the cooling oil or chip oil from taking too much time to impact the blocked chips and thus affecting the stability of drilling.
[0016] 2. In order to prevent the rod body from being separated from the gun drill due to excessive impact force when cooling oil or chip oil enters the gun drill, the gun drill extension rod is configured such that when the extension rod body and the gun drill body are fixed together with bolts, the double-threaded rod is rotated to allow the limiter to move toward the bolt, and the limiter is arranged in a V shape, so that the limiter can move inside the movable groove and clamp the bolt, so that the bolt will not be loosened when the gun drill body is impacted by cooling oil or chip oil, and the rod body from being separated from the gun drill due to excessive impact force when cooling oil or chip oil enters the gun drill can be effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional left-view structure of the utility model;
[0018] Figure 2 This is an exploded cross-sectional schematic diagram of the utility model;
[0019] Figure 3 This is an enlarged structural diagram of the A area of the utility model;
[0020] Figure 4 It is a schematic diagram of the structure of the limiting device of the utility model.
[0021] In the figure: 1. Extended rod; 2. Mounting groove; 3. Block; 4. Gun drill body; 5. Slot; 6. Oil hole; 7. Bolt; 8. Diverter; 9. Guide groove; 10. Guide; 11. Movable groove; 12. Limiting piece; 13. Double threaded rod. DETAILED DESCRIPTION
[0022] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a gun drill extension rod, comprising an extension rod body 1, a mounting groove 2 is provided at one end of the extension rod body 1, a bolt 7 is provided on the outer surface of the extension rod body 1, one end of the bolt 7 is arranged to penetrate the outer surface of the extension rod body 1 to the inside of a gun drill body 4, a clamping block 3 is fixedly connected to the inner wall of the mounting groove 2, the clamping block 3 is arranged in the clamping groove 5, the position of the clamping block 3 corresponds to the position of the clamping groove 5, so that the clamping block 3 can be well clamped into the inside of the clamping groove 5, a gun drill body 4 is clamped in the inside of the mounting groove 2, the size of the gun drill body 4 is adapted to the size of the mounting groove 2, so that the Haas gun drill body 4 can be better installed in the inside of the mounting groove 2, a clamping groove 5 is provided on the outer surface of the gun drill body 4, an oil hole 6 is provided at one end of the gun drill body 4, an acceleration structure is provided in the extension rod body 1, and the acceleration structure includes a guide groove 9, a diverter 8 and a guide 10.
[0023] In the embodiment of the utility model, a guide groove 9 is provided on the inner wall of the extended rod body 1, and the guide groove 9 is arranged in a spiral shape. A diverter 8 is fixedly connected to the inner wall of the extended rod body 1, and the diverter 8 is arranged in a spiral shape. A drainage groove is arranged on the outer surface of the diverter 8. The size of the diverter 8 is adapted to the size of the extended rod body 1, and the diverter 8 and the guide groove 9 are staggered. This can make the diverter 8 and the guide groove 9 cooperate to make the cooling oil or the chip oil flow faster, so that the cooling oil or the chip oil forms a vortex when passing through the inside of the extended rod body 1, so that the cooling oil or the chip oil contacts the inner wall of the guide 10 more quickly. A guide 10 is fixedly connected to the inner wall of the extended rod body 1 near the mounting groove 2. The guide 10 is arranged in a circular ring shape, and the inner wall of the guide 10 is arranged at an angle, so that the cooling oil or the chip oil can be better. The oil hole 6 can be entered into by the extension rod body 1, thereby effectively avoiding that the cooling oil or the chip oil needs too much time to impact the blocked chips, thereby affecting the stability of the drilling. A movable groove 11 is provided on the outer surface of the extension rod body 1 near the bolt 7. A limit piece 12 is clamped inside the movable groove 11. The limit piece 12 is arranged in a V shape. The size of the inside of the limit piece 12 is adapted to the outer surface of the bolt 7. A double-threaded rod 13 is threadedly connected on one side of the limit piece 12. In this way, the double-threaded rod 13 can be rotated to allow the limit piece 12 to move toward the bolt 7. In this way, the limit piece 12 can move inside the movable groove 11 and clamp the bolt 7, so that the bolt 7 will not be loosened when the gun drill body 4 is impacted by the cooling oil or the chip oil, and the rod body and the gun drill can be effectively prevented from being separated due to excessive impact force when the cooling oil or the chip oil enters the gun drill.
[0024] In the utility model, when in use, when the gun drill body 4 is inserted into the installation groove 2, the block 3 is also inserted into the groove 5, and the bolt 7 is used to limit the extension rod body 1 and the gun drill body 4, so that the cooling oil or chip oil can pass through the extension rod body 1 and contact the diverter 8, and the diverter 8 is arranged in a spiral shape, and the outer surface of the diverter 8 is provided with a drainage groove, which can make the cooling oil or chip oil form a vortex when passing through the extension rod body 1, so that the cooling oil or chip oil can contact the inner wall of the guide 10 more quickly, and the inner wall of the guide 10 is inclined, so that the cooling oil or chip oil can better enter the oil hole 6, thereby effectively avoiding the cooling oil or chip oil taking too much time to impact the blocked chips, thereby affecting the stability of drilling.
[0025] Furthermore, when the bolt 7 is used to fix the extension rod body 1 and the gun drill body 4 together, the double-threaded rod 13 is rotated to allow the limit member 12 to move toward the bolt 7, and the limit member 12 is set in a V shape, so that the limit member 12 can move inside the movable groove 11 and clamp the bolt 7. In this way, the bolt 7 will not be loosened when the gun drill body 4 is impacted by cooling oil or chip oil, which can effectively prevent the cooling oil or chip oil from entering the gun drill. The impact force is too large and the rod body is separated from the gun drill.
[0026] 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 gun drill extension rod, comprising an extension rod body (1), a mounting groove (2) is provided at one end of the extension rod body (1), a bolt (7) is provided on the outer surface of the extension rod body (1), a clamping block (3) is fixedly connected to the inner wall of the mounting groove (2), a gun drill body (4) is clamped inside the mounting groove (2), a clamping groove (5) is provided on the outer surface of the gun drill body (4), and an oil hole (6) is provided at one end of the gun drill body (4), characterized in that: An acceleration structure is arranged inside the extension rod body (1), and the acceleration structure comprises: A guide groove (9), wherein the inner wall of the extension rod body (1) is provided with a guide groove (9), wherein the guide groove (9) is arranged in a spiral shape, and a flow divider (8) is fixedly connected to the inner wall of the extension rod body (1), wherein the flow divider (8) is arranged in a spiral shape, and a drainage groove is arranged on the outer surface of the flow divider (8); A guide member (10) is fixedly connected to the inner wall of the extension rod body (1) near the mounting groove (2); the guide member (10) is arranged in a circular ring shape, and the inner wall of the guide member (10) is arranged in an inclined shape.
2. The gun drill extension rod according to claim 1, characterized in that: The size of the flow divider (8) is adapted to the size of the extended rod body (1), and the flow divider (8) and the guide groove (9) are arranged in a staggered manner.
3. The gun drill extension rod according to claim 1, characterized in that: The card block (3) is arranged inside the card slot (5), and the position of the card block (3) corresponds to the position of the card slot (5).
4. The gun drill extension rod according to claim 1, characterized in that: One end of the bolt (7) passes through the outer surface of the extended rod body (1) and is arranged inside the gun drill body (4); the size of the gun drill body (4) is adapted to the size of the installation slot (2).
5. The gun drill extension rod according to claim 1, characterized in that: A movable groove (11) is provided on the outer surface of the extension rod body (1) near the bolt (7), a limiting member (12) is clamped inside the movable groove (11), and a double-threaded rod (13) is threadedly connected to one side of the limiting member (12).
6. The gun drill extension rod according to claim 5, characterized in that: The limiting member (12) is arranged in a V shape, and the size of the interior of the limiting member (12) is adapted to the outer surface of the bolt (7).