Inner-cooling forming cutter for machining inner hole of high-pressure connector

Abstract

The utility model discloses an inner cold forming cutter for processing an inner hole of a high-pressure joint, which comprises a metal cutter bar and a metal cutter head arranged at the upper end of the metal cutter bar, the metal cutter bar and the metal cutter head are made of a whole alloy rod in a turning mode, the diameter of the metal cutter head is smaller than that of the metal cutter bar, and the metal cutter head is made of a metal material. A novel dehairing and oiling device is additionally arranged outside the position, close to the cutter head, of the cutter bar of the cold forming cutter for machining the inner hole of the high-pressure connector, and when the cutter head is inserted into the inner hole for cutting forming machining, the cutter head can be dehaired and oiled, so that the inner hole of the high-pressure connector can be dehaired and oiled, and the inner hole of the high-pressure connector can be machined. At the moment, the dehairing and oiling metal brush bristles on the dehairing and oiling device can be tightly attached to the inner wall of the inner hole, the lathe drives the high-pressure connector to rotate, the dehairing and oiling metal brush bristles can clear away burrs generated during turning forming, and the situation that the forming blade is blocked due to excessive metal burrs during turning of the inner hole is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to inner cold forming knives, and in particular relates to an inner cold forming knife for processing the inner hole of a high-pressure joint. Background Art

[0002] Internal cold forming tools for processing the inner hole of high-pressure joints usually refer to tools used in internal cold forming or internal cold extrusion processes. Internal cold forming is a metal processing method that uses a forming tool to plastically deform the workpiece while applying coolant pressure and high-speed refrigeration gas to the metal material, thereby achieving the processing of the hole.

[0003] However, when using the inner cold forming knife for processing the inner hole of the high-pressure joint, it is necessary to introduce the inner cold forming knife into the inner hole of the high-pressure joint, and then use the blade to widen and form the inner hole so that the inner hole is finally processed to a specified size. During the processing, metal debris will always be generated, and burrs will always be generated on the inner wall of the inner hole. The burrs will block the inner cold forming knife, resulting in a weakened processing effect of the inner cold forming knife, and it will also easily cause local cracks in the inner hole. Utility Model Content

[0004] The purpose of the utility model is to provide an internal cold forming knife for processing the inner hole of a high-pressure joint, so as to solve the problem proposed in the above-mentioned background technology that metal debris will be generated during the processing, and burrs will be generated on the inner wall of the inner hole. The burrs will block the internal cold forming knife, resulting in a weakened processing effect of the internal cold forming knife, and will also easily cause local cracks in the inner hole.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an internal cold forming knife for processing the inner hole of a high-pressure joint, comprising a metal knife rod and a metal knife head arranged at the upper end of the metal knife rod, the metal knife rod and the metal knife head are made by turning a whole alloy rod, the diameter of the metal knife head is smaller than the metal knife rod, the front end outer wall of the metal knife rod is provided with an installation pin groove, the installation pin groove is recessed inwardly on the outer wall of the metal knife rod, and the top end of the metal knife rod is provided with a scraping and oiling device;

[0006] The shaving and oiling device includes a metal insert, a brush rod and a fixed sleeve. The fixed sleeve is sleeved on the outside of the outer wall of the metal knife rod. The fixed sleeve is close to the metal knife head. The fixed sleeve is fixedly connected to the metal knife rod by screws. A metal insert is welded to the left end of the fixed sleeve. The bottom end of the metal insert is sealed. The brush rod is inserted in the metal insert.

[0007] Preferably, the shaving and oiling device also includes shaving and oiling metal bristles and an end fixing screw, the end fixing screw is inserted into the top of the brush rod, the left end of the metal cutter head is provided with a screw hole, the screw rod of the end fixing screw is threadedly inserted into the screw hole, and the left end of the brush rod is densely covered with shaving and oiling metal bristles.

[0008] Preferably, the length of the scraping and oiling metal bristles can be changed according to the aperture size, so that the scraping and oiling metal bristles can adapt to the inner holes of high-voltage joints with different apertures, and the brush rod and the metal insert are interference fit.

[0009] Preferably, a plurality of cooling spray holes are arranged inside the metal cutter head, a cooling through hole is connected between the metal cutter rod and the inside of the metal cutter head, and the cooling through hole is communicated with the inside of the cooling spray hole.

[0010] Preferably, a concave blade fixing groove is provided at the front end of the metal cutter head, and a molded blade is provided in the blade fixing groove.

[0011] Preferably, the molding blade is fixedly connected to the metal cutter head via a blade fixing screw, and the right end tip of the molding blade is located on the right side of the right end of the metal cutter head.

[0012] Compared with the prior art, the utility model provides an internal cold forming knife for processing the inner hole of a high-pressure joint, which has the following beneficial effects:

[0013] The utility model adds a novel scraping and oiling device to the outside of the tool rod of the cold forming tool for processing the inner hole of the high-pressure joint near the tool head. When the tool head is inserted into the inner hole for cutting and forming processing, the scraping and oiling metal bristles on the scraping and oiling device will be tightly attached to the inner wall of the inner hole. As the lathe drives the high-pressure joint to rotate, the scraping and oiling metal bristles will clean up the burrs generated during turning and forming, thereby avoiding the formation blade from being blocked due to excessive metal burrs when turning the inner hole. Moreover, when turning and forming the inner hole, external coolant will be sprayed into the inner hole through the cooling spray hole, and the scraping and oiling metal bristles that are in full contact with the inner wall of the inner hole will fully apply the coolant to the inner wall of the inner hole, thereby increasing the cooling effect on the high-pressure joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the external plane structure of an internal cold forming cutter for processing the inner hole of a high-pressure joint.

[0015] Figure 2 The utility model is a schematic diagram of the internal plane structure of an internal cold forming cutter for processing the inner hole of a high-pressure joint.

[0016] Figure 3 It is a schematic diagram of the planar structure of the metal cutter head of the utility model.

[0017] Figure 4 It is a schematic diagram of the planar structure of the scraping and oiling device of the utility model.

[0018] In the figure: 1. Metal knife rod; 2. Mounting pin groove; 3. Scraping and oiling device; 4. Metal knife head; 5. Forming blade; 6. Cooling through hole; 7. Cooling spray hole; 8. Blade fixing groove; 9. Blade fixing screw; 10. Metal insert; 11. Scraping and oiling metal brush bristles; 12. Brush rod; 13. End fixing screw; 14. Fixing sleeve. DETAILED DESCRIPTION

[0019] 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.

[0020] The utility model provides Figure 1-4 The shown internal cold forming tool for processing the inner hole of a high-pressure joint comprises a metal tool rod 1 and a metal tool head 4 arranged at the upper end of the metal tool rod 1. The metal tool rod 1 and the metal tool head 4 are made of a whole alloy rod by turning. The diameter of the metal tool head 4 is smaller than the metal tool rod 1. The outer wall of the front end of the metal tool rod 1 is provided with a mounting pin groove 2, and the mounting pin groove 2 is recessed inwardly on the outer wall of the metal tool rod 1. A plurality of cooling spray holes 7 are arranged inside the metal tool head 4. The metal tool rod 1 and the metal tool head 4 are internally connected with a cooling through hole 6, and the cooling through hole 6 is connected with the cooling spray hole 7. A recessed blade fixing groove 8 is arranged at the front end of the metal tool head 4, and a forming blade 5 is arranged in the blade fixing groove 8. The forming blade 5 is fixedly connected to the metal tool head 4 by a blade fixing screw 9. The right end tip of the forming blade 5 is located on the right side of the right end of the metal tool head 4. The internal cold forming tool for processing the inner hole of the high-pressure joint is installed and used. When using a forming knife, first, the metal tool rod 1 needs to be inserted into the special fixing hole of the forming equipment, and the pin in the fixing hole needs to be inserted into the mounting pin groove 2 on the metal tool rod 1, and then the metal tool rod 1 is fixed so that the forming equipment can drive the metal tool rod 1 to move, and then the forming blade 5 needs to be placed in the blade fixing groove 8 on the metal tool head 4, and the forming blade 5 is fixed with the blade fixing screw 9, and then the cold forming knife for processing the inner hole of the high-pressure joint can be used normally. During processing, the clamp will drive the high-pressure joint to rotate, and the metal tool head 4 will drive the forming blade 5 to be inserted into the inner hole, and the forming blade 5 contacts the inner wall of the inner hole. As the high-pressure joint rotates, the forming blade 5 will perform turning and forming processing on the inner hole. At the same time, the external coolant will be pressed into the cooling through hole 6 and sprayed into the inner hole through the cooling nozzle 7, so that real-time cooling can be performed.

[0021] like Figure 1 and Figure 4 As shown, a scraping and oiling device 3 is arranged on the outside of the top end of the metal knife rod 1, and the scraping and oiling device 3 includes a metal insert 10, a brush rod 12 and a fixed sleeve 14. The fixed sleeve 14 is sleeved on the outside of the outer wall of the metal knife rod 1, and the fixed sleeve 14 is close to the metal knife head 4. The fixed sleeve 14 is fixedly connected to the metal knife rod 1 by screws. A metal insert 10 is welded on the left end of the fixed sleeve 14, and the bottom end of the metal insert 10 is sealed. The brush rod 12 is inserted in the metal insert 10. The scraping and oiling device 3 also includes scraping and oiling metal bristles 11 and an end fixing screw 13. The end fixing screw 13 is inserted at the top of the brush rod 12. A screw hole is arranged on the left end of the metal knife head 4, and the screw rod of the end fixing screw 13 is threadedly inserted in the screw hole. The left end of the brush rod 12 is densely covered with scraping and oiling metal bristles 11.

[0022] like Figure 1 and Figure 4 As shown, the length of the scraping and oiling metal brush bristles 11 can be replaced according to the size of the aperture, so that the scraping and oiling metal brush bristles 11 can adapt to the inner holes of high-pressure joints with different apertures. The brush rod 12 and the metal insert 10 have an interference fit. After the forming blade 5 is fixed to the inside of the blade fixing groove 8 by the blade fixing screw 9, the scraping and oiling device 3 needs to be installed on the metal blade rod 1. Specifically, the lower end of the brush rod 12 needs to be inserted into the metal insert 10. When inserting the brush rod 12, it is necessary to ensure that the scraping and oiling metal brush bristles 11 face outwards. After the lower end of the brush rod 12 is fully inserted into the metal insert 10, the brush rod 12 needs to be tightened. The end fixing screw 13 at the other end of the rod 12 allows the screw rod thread of the end fixing screw 13 to be inserted into the screw hole inside the metal cutter head 4, so that both ends of the brush rod 12 can be fixed. When the metal cutter head 4 is inserted into the inner hole for processing, the brush rod 12 will also be inserted into the inner hole simultaneously. At this time, the scraping and oiling metal bristles 11 will be close to the inner wall of the inner hole. As the high-pressure joint rotates, the scraping and oiling metal bristles 11 will continue to rub the inner wall of the inner hole, thereby cleaning up the burrs generated during turning and forming, and at the same time, it can also help the coolant to more fully contact the inner hole, thereby increasing the cooling effect.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An internal cold forming knife for machining an inner hole of a high-pressure joint, comprising a metal knife rod (1) and a metal knife head (4) arranged at the upper end of the metal knife rod (1), wherein the metal knife rod (1) and the metal knife head (4) are made by turning a whole alloy rod, the diameter of the metal knife head (4) is smaller than the diameter of the metal knife rod (1), and the outer wall of the front end of the metal knife rod (1) is provided with a mounting pin groove (2), and the mounting pin groove (2) is recessed inwardly on the outer wall of the metal knife rod (1), characterized in that: The top end of the metal blade rod (1) is provided with a scraping and oiling device (3); The shaving and oiling device (3) comprises a metal insert (10), a brush rod (12) and a fixed sleeve (14); the fixed sleeve (14) is sleeved on the outer wall of the metal blade rod (1); the fixed sleeve (14) is close to the metal blade head (4); the fixed sleeve (14) is fixedly connected to the metal blade rod (1) by screws; the metal insert (10) is welded to the left end of the fixed sleeve (14); the bottom end of the metal insert (10) is sealed; and the brush rod (12) is inserted into the metal insert (10).

2. The inner cold forming cutter for machining the inner hole of a high-pressure joint according to claim 1, characterized in that: The scraping and oiling device (3) also includes scraping and oiling metal bristles (11) and an end fixing screw (13), wherein the end fixing screw (13) is inserted into the top end of the brush rod (12), a screw hole is provided at the left end of the metal cutter head (4), the screw rod of the end fixing screw (13) is threadedly inserted into the screw hole, and the left end of the brush rod (12) is densely covered with scraping and oiling metal bristles (11).

3. The inner cold forming cutter for machining the inner hole of a high-pressure joint according to claim 2, characterized in that: The length of the scraping and oiling metal bristles (11) can be changed according to the size of the hole diameter, so that the scraping and oiling metal bristles (11) can adapt to the inner holes of high-voltage joints with different hole diameters, and the brush rod (12) and the metal insert (10) are interference-fitted.

4. The inner cold forming cutter for machining the inner hole of a high-pressure joint according to claim 1, characterized in that: The metal cutter head (4) is provided with a plurality of cooling spray holes (7) inside, the metal cutter rod (1) and the metal cutter head (4) are connected with cooling through holes (6) inside, and the cooling through holes (6) are communicated with the inside of the cooling spray holes (7).

5. The inner cold forming cutter for machining the inner hole of a high-pressure joint according to claim 1, characterized in that: The front end of the metal cutter head (4) is provided with a recessed blade fixing groove (8), and a shaped blade (5) is arranged in the blade fixing groove (8).

6. The inner cold forming cutter for machining the inner hole of a high-pressure joint according to claim 5, characterized in that: The shaped blade (5) is fixedly connected to the metal blade head (4) via a blade fixing screw (9), and the right end of the shaped blade (5) is located on the right side of the right end of the metal blade head (4).

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