A clamping tool for oil and gas drilling bit polishing

Abstract

The utility model relates to petroleum drill bit technical field discloses a clamping tool for oil and gas exploitation drill bit polishing, including tool base, still include: the multiple positioning slots of opening in tool base inside, the inside of tool base is opened with four mounting slots, the top of tool base is provided with four wedges, one side of wedge is provided with the pressure block that presses, one side of wedge is opened has the wedge groove for preventing the pressure block that presses loose, one side of pressure block that presses is opened has the tooth groove that uses in cooperation wedge groove. First, the position of wedge can be adjusted and positioned by using the clamping plate and the clamping groove, when the arc clamping ring is clamped on the drill bit by the pressure block that presses, the tooth groove set on the side of pressure block will press the inside of wedge groove at this moment, if the pressure block that presses is looser, the pre -tightening force of the pressure that presses between tooth groove and wedge groove will be tighter, and the screw rod and the positioning ring limit fastening on the pressure block that presses, realize the effect of fastening from multidirectional anti -loose.

Description

Technical Field

[0001] This utility model relates to the field of oil drill bit technology, specifically a clamping tool for grinding oil and gas extraction drill bits. Background Technology

[0002] The clamping fixture for grinding oil and gas drilling bits is a special fixing device designed for grinding, repairing or processing various types of drill bits (such as roller cone drill bits, PDC drill bits, etc.) in the oil and gas extraction field. Its core function is to use a clamping structure that adapts to the shape of the drill bit to accurately and firmly fix the drill bit on the worktable of the grinding equipment, so as to avoid the reduction of grinding accuracy due to vibration and displacement of the drill bit during grinding, while ensuring operational safety.

[0003] In the grinding and milling process of oil drill bit production, existing clamping fixtures used for positioning mostly rely on simple screws and pressure plates to fix the drill bit. However, after long-term high-intensity use, the pressure blocks and screws are prone to loosening due to continuous vibration, cutting forces and other factors, which poses a risk of unstable clamping or even dropping of the drill bit, and has a certain impact on processing accuracy and production safety. Utility Model Content

[0004] The purpose of this invention is to provide a clamping fixture for grinding oil and gas extraction drill bits, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping fixture for grinding oil and gas extraction drill bits, including a fixture base, and further comprising: Multiple positioning slots are formed inside the tooling base. The tooling base has four mounting slots inside. Four wedges are set on the top of the tooling base. A pressing block is set on one side of each wedge. A wedge groove is formed on one side of each wedge to prevent the pressing block from loosening.

[0006] Preferably, one side of the pressing block is provided with a toothed groove for use with the wedge groove, and both the wedge groove and the toothed groove are arranged in an array.

[0007] Preferably, an arc-shaped retaining ring is fixedly connected to one side of the pressing block, and the arc-shaped retaining ring is made of rubber.

[0008] Preferably, the pressing block has a retaining groove inside, a screw is provided inside the retaining groove, a torsion block is fixedly connected to the top of the screw, and a retaining ring that abuts against the inner wall of the mounting groove is rotatably connected to the bottom of the screw.

[0009] Preferably, the screw has a threaded connection to a positioning ring on its surface, and both sides of the top of the positioning ring are fixedly connected to a limiting plate that slides inside the retaining groove.

[0010] Preferably, the inner cavity array of the mounting groove has slots, and the bottom of the wedge is fixedly connected to a slider that slides inside the mounting groove.

[0011] Preferably, the wedge has a connecting groove inside, a spring is fixedly connected to the inner cavity of the connecting groove, a pressing ring is fixedly connected to the top of the spring, a steel bar is fixedly connected to the bottom of the pressing ring and extends into the mounting groove, and a clamping plate for use with the clamping groove is fixedly connected to the bottom of the steel bar.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention firstly uses a clamping plate and a clamping groove to adjust and position the wedge block. When the pressing block moves the arc-shaped retaining ring to clamp onto the drill bit, the toothed groove on one side of the pressing block will press against the inside of the wedge groove. The looser the pressing block's pressing force, the tighter the pre-tightening force between the toothed groove and the wedge groove will be. In addition, the pressing block also has a screw and a positioning ring for limiting and fastening, achieving a multi-directional anti-loosening and fastening effect. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of a clamping fixture for grinding oil and gas extraction drill bits provided by this utility model; Figure 2 A top view of the structure provided for this utility model; Figure 3 A schematic diagram of the pressing block structure provided by this utility model; Figure 4 A schematic diagram of the tooling base structure provided by this utility model.

[0014] In the diagram: 1. Tooling base; 2. Positioning groove; 3. Mounting groove; 4. Wedge block; 5. Pressing block; 6. Wedge groove; 7. Tooth groove; 8. Arc-shaped retaining ring; 9. Retention groove; 10. Screw; 11. Torsion block; 12. Retention ring; 13. Positioning ring; 14. Limiting plate; 15. Snap groove; 16. Slider; 17. Connecting groove; 18. Spring; 19. Pressing ring; 20. Rebar rod; 21. Clamping plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4As shown, a clamping fixture for grinding oil and gas extraction drill bits includes a fixture base 1, and further includes: Multiple positioning slots 2 are formed inside the tooling base 1. The tooling base 1 has four mounting slots 3 inside. Four wedges 4 are set on the top of the tooling base 1. A pressing block 5 is set on one side of the wedge 4. A wedge groove 6 is formed on one side of the wedge 4 to prevent the pressing block 5 from loosening. The positioning slots 2 facilitate the installation of other accessories. The mounting slots 3 facilitate the installation and fixing of the wedges 4. The wedges 4 facilitate the limiting installation of the pressing block 5. The wedge grooves 6 formed on one side of the wedges 4 are used to prevent the pressing block 5 from loosening during subsequent use.

[0017] The pressing block 5 has a toothed groove 7 on one side that works with the wedge groove 6. Both the wedge groove 6 and the toothed groove 7 are arranged in an array. An arc-shaped retaining ring 8 is fixedly connected to one side of the pressing block 5. The arc-shaped retaining ring 8 is made of rubber. Through the pressure between the toothed groove 7 and the wedge groove 6, it can be ensured that the pressing block 5 will not loosen when clamped with the drill bit. The fact that the arc-shaped retaining ring 8 is made of rubber can increase the friction when clamping the drill bit and ensure the stability of the clamping.

[0018] The pressing block 5 has a retaining groove 9 inside, and a screw 10 is installed inside the retaining groove 9. A torsion block 11 is fixedly connected to the top of the screw 10, and a retaining ring 12 that abuts against the inner wall of the mounting groove 3 is rotatably connected to the bottom of the screw 10. A positioning ring 13 is threadedly connected to the surface of the screw 10. Limiting plates 14 that slide inside the retaining groove 9 are fixedly connected to both sides of the top of the positioning ring 13. Since the screw 10 is installed inside the retaining groove 9, and the bottom of the screw 10 and the retaining ring 12 are located inside the mounting groove 3, when the torsion block 11 on the screw 10 is rotated, the positioning ring 13 threadedly connected to the surface of the screw 10 will drive the limiting plate 14 to rise and be limited inside the retaining groove 9, and press against the bottom of the pressing block 5. At this time, the pressure between the wedge groove 6 and the tooth groove 7 is used to ensure the stability of the clamping between one side of the pressing block 5 and the wedge block 4 and the drill bit on the other side.

[0019] The inner cavity of the mounting slot 3 is provided with slots 15. A slider 16, which slides within the mounting slot 3, is fixedly connected to the bottom of the wedge 4. A connecting slot 17 is provided inside the wedge 4. A spring 18 is fixedly connected to the inner cavity of the connecting slot 17. A pressing ring 19 is fixedly connected to the top of the spring 18. A steel rod 20, penetrating into the mounting slot 3, is fixedly connected to the bottom of the pressing ring 19. A locking plate 21, which works in conjunction with the slots 15, is fixedly connected to the bottom of the steel rod 20. The slots 15 provide a mounting surface for the mounting slot 3. Inside the mounting groove 3, when it is necessary to adjust the movement of the wedge 4, the wedge 4 drives the slider 16 to slide within the mounting groove 3. At this time, the pressing ring 19 is pressed down. As the pressing ring 19 moves, it will drive the steel bar 20 and the clamping plate 21 to descend. When the pressing ring 19 descends, it will compress the spring 18. After the wedge 4 is moved to the appropriate position, the pressing ring 19 is released. At this time, the steel bar 20 will be rebounded by the spring 18, which will drive the clamping plate 21 to rise and lock into the connecting groove 17, thereby positioning the wedge 4.

[0020] Working principle: First, place the drill bit on the top of the tooling base 1. Then, move the pressure block 5 and the tooth groove 7 on one side of the wedge groove 6 until the pressure block 5 drives the arc-shaped retaining ring 8 to stably fit against the drill bit. The wedge groove 6 will also press against one side of the tooth groove 7 to achieve pre-tightening force. Then, when the torsion block 11 on the screw 10 is rotated, the positioning ring 13 threaded on the surface of the screw 10 will drive the limiting plate 14 to rise inside the fixing groove 9 and press against the bottom of the pressure block 5. At this time, the pressure between the wedge groove 6 and the tooth groove 7 is used to ensure the stability of the clamping between one side of the pressure block 5 and the other side of the wedge block 4 and the drill bit, thereby ensuring the stability of the drill bit clamping.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping fixture for grinding oil and gas extraction drill bits, comprising a fixture base (1), characterized in that, Also includes: Multiple positioning slots (2) are opened inside the tooling base (1). Four mounting slots (3) are opened inside the tooling base (1). Four wedges (4) are provided on the top of the tooling base (1). A pressing block (5) is provided on one side of the wedge (4). A wedge groove (6) is opened on one side of the wedge (4) to prevent the pressing block (5) from loosening. The pressing block (5) has a toothed groove (7) on one side for use with the wedge groove (6). Both the wedge groove (6) and the toothed groove (7) are arranged in an array. The pressing block (5) has a retaining groove (9) inside. A screw (10) is provided inside the retaining groove (9). A torsion block (11) is fixedly connected to the top of the screw (10). A retaining ring (12) that presses against the inner wall of the mounting groove (3) is rotatably connected to the bottom of the screw (10). The inner cavity of the mounting groove (3) has slots (15) arranged in an array. The bottom of the wedge (4) is fixedly connected to a slider (16) that slides inside the mounting groove (3). The wedge (4) has a connecting groove (17) inside. The inner cavity of the connecting groove (17) is fixedly connected to a spring (18). The top of the spring (18) is fixedly connected to a pressing ring (19). The bottom of the pressing ring (19) is fixedly connected to a steel bar (20) that penetrates into the mounting groove (3). The bottom of the steel bar (20) is fixedly connected to a card plate (21) that works with the card slot (15).

2. The clamping fixture for grinding oil and gas extraction drill bits according to claim 1, characterized in that: An arc-shaped retaining ring (8) is fixedly connected to one side of the pressing block (5), and the arc-shaped retaining ring (8) is made of rubber.

3. The clamping fixture for grinding oil and gas extraction drill bits according to claim 1, characterized in that: The screw (10) is threaded with a positioning ring (13), and the top two sides of the positioning ring (13) are fixedly connected with limiting plates (14) that slide inside the fixing groove (9).

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