A fire power plant overhauls drill bit polishing frock

Abstract

The utility model relates to drill bit processing technical field, and disclose a kind of thermal power plant overhaul drill bit polishing tool, including support plate, and the fixed block of setting in support plate upper end, the fixed hole is opened in the inside of fixed block, the side of fixed block is equipped with adaptive channel, the both sides of adaptive channel are equipped with the adaptive hole of opening in the outer wall of fixed block, the inner wall of adaptive hole is connected with fixed bolt, and the thread transmission of fixed bolt ensures the adjustment accuracy, and the structural strength of fixed block guarantees deformation stability, and the structural cooperation of fixed hole and adaptive channel realizes the conversion from bolt linear motion to aperture nonlinear adjustment, to adapt to drill bit of different diameter, solve the quality of different model drill bit after artificial polishing uneven, not only cannot guarantee reuse effect, but rather because model adaptation improper aggravate drill bit consumption, increase replacement frequency problem.

Description

Technical Field

[0001] This utility model relates to the field of drill bit processing technology, and in particular to a grinding fixture for drill bits used in thermal power plant maintenance. Background Technology

[0002] In thermal power plant maintenance, the extensive use of drilling machines and electric drills makes drill bits critical consumable tools. To control maintenance costs, worn drill bits need to be ground and reused on-site. However, the current manual grinding method has a significant deficiency in model compatibility: thermal power plant maintenance involves a variety of drill bit models, and different diameters and uses require different grinding angles. Manual grinding relies entirely on the operator's experience to adjust the angle, lacking standardized positioning devices for different drill bit models. This incompatible grinding method leads to serious problems: for small-diameter drill bits, it is difficult to accurately control the grinding force and angle manually, easily resulting in over-grinding or angle deviation; for large-diameter drill bits, due to the lack of stable support, wobbling is prone to occur during grinding, leading to asymmetrical cutting edges. The quality of drill bits after manual grinding varies greatly, not only failing to guarantee reuse but also exacerbating drill bit wear and increasing replacement frequency due to improper model compatibility. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that different models of drill bits have inconsistent quality after manual grinding, which not only fails to guarantee the reuse effect, but also aggravates the wear and tear of drill bits and increases the replacement frequency due to improper model matching. To this end, we propose a drill bit grinding tool for thermal power plant maintenance.

[0004] To achieve the above objectives, this application adopts the following technical solution: a grinding fixture for drill bits used in thermal power plant maintenance, comprising a support plate and a fixing block disposed on the upper end of the support plate. The fixing block has a fixing hole inside and an adapter channel on one side. Both sides of the adapter channel are provided with adapter holes disposed on the outer wall of the fixing block. The inner wall of the adapter hole is threaded with a fixing bolt. The width of the adapter channel is controlled by rotating the fixing bolt, thereby changing the inner diameter of the fixing hole.

[0005] Furthermore, the outer wall of the support plate is provided with a connection hole, and the inner wall of the connection hole is threaded with a fixing component, which connects the support plate to the tabletop.

[0006] Furthermore, the fixing assembly includes an outer rod body that is threadedly connected to the connecting hole, a control rod that is rotatably connected to the upper wall of the outer rod body, the lower wall of the control rod penetrating through the upper wall of the outer rod body, and a threaded rod that is fixedly connected to one end of the control rod that penetrates through the outer rod body.

[0007] Furthermore, the outer wall of the threaded rod is threadedly connected to an outer top block, which is slidably connected to the inner wall of the outer rod body.

[0008] Furthermore, movable grooves are provided on both outer walls of the outer rod body, and an outer support block is provided on the inner wall of the movable groove. One end of the outer support block is a straight structure, and the other end of the outer support block is an arc structure. The arc end of the outer support block is located in the inner cavity of the outer rod body, and a reinforcing block is fixedly connected to the straight end of the outer support block.

[0009] Furthermore, both sides of the outer support block are fixedly connected to a slider body, and the slider body is slidably connected to the inner wall of the movable groove.

[0010] Furthermore, when the outer top block and the outer support block are on the same horizontal line, the reinforcing block protrudes out of the movable groove.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] In this invention, when the operator rotates the fixing bolt, the adapter hole provides stable threaded support for the bolt, allowing the fixing bolt to advance axially into the adapter channel. By pressing the bolt end against the side walls of the adapter channel, the fixing block utilizes the slight deformation characteristics of its own metallic material to convert the axial thrust of the fixing bolt into the radial contraction force of the fixing hole. The width of the adapter channel gradually decreases as the bolt advances, causing the inner diameter of the fixing hole to shrink synchronously until it is tightly fitted against the outer wall of the drill bit, completing the clamping and fixing. Conversely, when the fixing bolt is rotated in the opposite direction, the pressure on the side walls of the adapter channel is released, the width is restored, and the inner diameter of the fixing hole increases, thus releasing the drill bit. During this process, the threaded transmission of the fixing bolt ensures the adjustment accuracy, the structural strength of the fixing block ensures the deformation stability, and the structural fit between the fixing hole and the adapter channel realizes the transformation from linear bolt movement to nonlinear hole diameter adjustment, thereby adapting to drill bits of different diameters. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the fixing component structure of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged diagram of point A.

[0018] Legend: 1. Support plate; 2. Fixing block; 3. Fixing hole; 4. Adaptor channel; 5. Adaptor hole; 6. Fixing bolt; 7. Fixing assembly; 71. Outer rod body; 72. Control rod; 73. Threaded rod; 74. Outer top block; 75. Movable groove; 76. Outer support block; 77. Reinforcing block. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] Reference Figures 1-4 As shown, to address the issue of inconsistent quality of drill bits of different models after manual grinding, which not only fails to guarantee reusability but also exacerbates drill bit wear and increases replacement frequency due to improper model compatibility, the following preferred technical solution is provided:

[0021] A tooling for grinding drill bits for maintenance in thermal power plants includes a support plate 1 and a fixing block 2 set on the upper end of the support plate 1. The fixing block 2 has a fixing hole 3 inside and an adapter channel 4 on one side. Both sides of the adapter channel 4 are provided with adapter holes 5 on the outer wall of the fixing block 2. The inner wall of the adapter hole 5 is threaded with a fixing bolt 6. The width of the adapter channel 4 is controlled by rotating the fixing bolt 6, thereby changing the inner diameter of the fixing hole 3.

[0022] The outer wall of the support plate 1 has a connecting hole, and the inner wall of the connecting hole is threaded with a fixing component 7. The fixing component 7 connects the support plate 1 to the tabletop. The fixing component 7 includes an outer rod body 71 threadedly connected to the connecting hole. A control rod 72 is rotatably connected to the upper wall of the outer rod body 71. The lower wall of the control rod 72 passes through the upper wall of the outer rod body 71. A threaded rod 73 is fixedly connected to one end of the control rod 72 that passes through the outer rod body 71. An outer top block 74 is threadedly connected to the outer wall of the threaded rod 73. The outer top block 74 is slidably connected to the inner wall of the outer rod body 71. Both sides of the outer wall of the outer rod 71 are provided with movable grooves 75. The inner wall of the movable groove 75 is provided with an outer support block 76. One end of the outer support block 76 is a straight structure, and the other end of the outer support block 76 is an arc structure. The arc end of the outer support block 76 is located in the inner cavity of the outer rod body 71. The straight end of the outer support block 76 is fixedly connected to a reinforcing block 77. Both sides of the outer support block 76 are fixedly connected to a slider body 78. The slider body 78 is slidably connected to the inner wall of the movable groove 75. When the outer top block 74 and the outer support block 76 are on the same horizontal line, the reinforcing block 77 protrudes out of the movable groove 75.

[0023] Specifically, the fixing block 2, as the core load-bearing component, has a fixing hole 3 inside that provides initial space for the drill bit. An adapter channel 4 on one side connects the fixing hole 3 to the outside, forming a deformable and adjustable structure. When the operator rotates the fixing bolt 6, the adapter hole 5 provides stable threaded support for the bolt, causing the fixing bolt 6 to advance axially into the adapter channel 4. By pressing the bolt end against the side walls of the adapter channel 4, the fixing block 2 utilizes the slight deformation characteristics of its metallic material to convert the axial thrust of the fixing bolt 6 into a radial contraction force in the fixing hole 3. The width of the adapter channel 4 gradually decreases as the bolt advances, causing the inner diameter of the fixing hole 3 to shrink synchronously until it matches the inner diameter of the drill bit. The drill bit's outer wall fits tightly, completing the clamping and fixing. Conversely, when the fixing bolt 6 is rotated in the opposite direction, the pressure on the side wall of the adapter channel 4 is released, the width is restored, and the inner diameter of the fixing hole 3 is increased, thus loosening the drill bit. During this process, the thread drive of the fixing bolt 6 ensures the adjustment accuracy, the structural strength of the fixing block 2 ensures the deformation stability, and the structural cooperation between the fixing hole 3 and the adapter channel 4 realizes the transformation from linear bolt movement to non-linear hole diameter adjustment, thereby adapting to drill bits of different diameters. This solves the problem that different models of drill bits have inconsistent quality after manual grinding, which not only fails to guarantee the reuse effect but also exacerbates drill bit wear and increases the replacement frequency due to improper model adaptation.

[0024] The outer rod body 71 serves as a basic support, fixed to the support plate 1 via a threaded connection hole, providing an installation reference for the entire assembly. When the operator rotates the control rod 72, the rotational connection between the control rod 72 and the outer rod body 71 ensures effective force input, and the threaded rod 73 fixed at its lower end rotates along with it. The threaded engagement between the threaded rod 73 and the outer top block 74 converts the rotational motion into linear motion. The outer top block 74 is restricted from rotating by the inner wall of the outer rod body 71 and can only slide downwards along the axial direction of the threaded rod 73. During the downward movement of the outer top block 74, its outer wall contacts the arc end of the outer support block 76, using the inclined plane transmission principle to convert the axial force into radial thrust. Under the thrust, the outer support block 76 moves stably outward along the guide of the movable groove 75 via the slider bodies 78 on both sides. The movable groove 75 precisely restricts the movement trajectory of the outer support block 76 to prevent deviation. The straight end of the outer support block 76 drives the reinforcing block 77 to extend out of the movable groove 75 simultaneously. When the outer top block 74 and the outer support block 76 are on the same horizontal line, the reinforcing block 77 protrudes completely from the outer rod body 71. Stable support is formed by the friction and pressure between the symmetrically distributed reinforcing blocks and the table. When the control rod 72 is rotated in the opposite direction, the threaded rod 73 drives the outer top block 74 to move upward, the outer support block 76 loses the compressive force, and retracts along the movable groove 75 under its own weight and the guide of the slider body 78. The reinforcing block 77 retracts into the movable groove 75, releasing the fixed state. The entire process, through the multi-stage transmission cooperation of the control rod, threaded rod, outer top block, and outer support block, achieves rapid locking and unlocking of the tooling and the table, ensuring the stability of the grinding process.

[0025] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A tooling for grinding drill bits during maintenance in thermal power plants, characterized in that, The device includes a support plate and a fixing block disposed on the upper part of the support plate. The fixing block has a fixing hole inside and an adapter channel on one side. Both sides of the adapter channel have adapter holes on the outer wall of the fixing block. The inner wall of the adapter hole is threaded with a fixing bolt. The width of the adapter channel is controlled by rotating the fixing bolt, thereby changing the inner diameter of the fixing hole.

2. The power plant maintenance drill bit grinding fixture according to claim 1, characterized in that: The outer wall of the support plate has a connection hole, and the inner wall of the connection hole is threaded with a fixing component, which connects the support plate to the desktop.

3. The power plant maintenance drill bit grinding fixture according to claim 2, characterized in that: The fixing assembly includes an outer rod body that is threadedly connected to a connecting hole. A control rod is rotatably connected to the upper wall of the outer rod body. The lower wall of the control rod passes through the upper wall of the outer rod body. A threaded rod is fixedly connected to one end of the control rod that passes through the outer rod body.

4. The power plant maintenance drill bit grinding fixture according to claim 3, characterized in that: The outer wall of the threaded rod is threadedly connected to an outer top block, which is slidably connected to the inner wall of the outer rod body.

5. The power plant maintenance drill bit grinding fixture according to claim 4, characterized in that: The outer walls on both sides of the main body of the outer rod are provided with movable grooves. The inner walls of the movable grooves are provided with outer support blocks. One end of the outer support block is a straight structure, and the other end of the outer support block is an arc structure. The arc end of the outer support block is located in the inner cavity of the main body of the outer rod, and the straight end of the outer support block is fixedly connected to a reinforcing block.

6. The power plant maintenance drill bit grinding fixture according to claim 5, characterized in that: Both sides of the outer support block are fixedly connected to the slider body, and the slider body is slidably connected to the inner wall of the movable groove.

7. The power plant maintenance drill bit grinding fixture according to claim 6, characterized in that: When the outer top block and the outer support block are on the same horizontal line, the reinforcing block protrudes out of the movable groove.

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