Self-centering reamer bit
By designing trapezoidal connecting blocks, trapezoidal connecting slots, clamping components and pressing components in the reaming drill bit, the self-positioning and fixing of the guides is achieved, solving the problem that traditional reaming drill bits need to use other tools to fix the guides, and improving the The convenience and efficiency of operation.
Patent Information
- Application Number
- CN202421338432.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-13
AI Technical Summary
Traditional reaming drills require other tools to fix the guides, and the guides are easily lost due to tool loss when replacing them.
A self-centered hole reaming drill bit is designed, using a combination of trapezoidal connecting block, trapezoidal connecting groove, clamping assembly and pressing assembly. Through the design and structure of these components, self-positioning and fixing of guide members is achieved, avoiding the need for the Reliances of other tools.
It enables the fixing of guides without the need for other tools, simplifies the operation process and improves the convenience of guide replacement.
Smart Images
Figure CN222478641U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill bits, in particular to a self-centering hole-reaming drill bit. Background Art
[0002] A reamer drill bit is a drill bit used to enlarge a hole.
[0003] When it is necessary to enlarge the hole, the traditional way of enlarging the hole is to first fix a guide piece that matches the original hole on one side of the reaming drill bit by means of bolts. When in use, the guide piece is used to make the reaming drill bit fit the inner wall of the original hole. The guide piece is then inserted into the original hole, and the hole is enlarged by rotating the drill bit. When fixing the position of the guide piece, other tools are needed to tighten the bolts to complete the task. When replacing the guide piece, there is a possibility that the guide piece cannot be replaced due to the loss of the tool. Utility Model Content
[0004] The utility model aims to provide a self-centering reaming drill bit to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-centering reaming drill bit, comprising a fixed cylinder, a cutter is arranged on the top of the fixed cylinder, a support block is symmetrically fixedly connected to the center of the top of the fixed cylinder, a guide piece is arranged on one side of the support block, a trapezoidal connecting groove is opened on the top of the support block, a trapezoidal connecting block is fixedly connected to one side of the guide piece, the trapezoidal connecting block is inserted and connected inside the trapezoidal connecting groove, a clamping assembly for fixing the position of the trapezoidal connecting block is arranged inside the trapezoidal connecting groove, and a pressing assembly is arranged in the middle of the trapezoidal connecting block.
[0006] Preferably, a reinforcing block is fixedly connected to one side opposite to the plurality of support blocks, the snap-in assembly comprises a snap-in hole opened in the middle of the trapezoidal connecting block, a snap-in block is inserted and connected to the inner wall of one side of the trapezoidal connecting groove, and the snap-in block is snap-into the inside of the snap-in hole.
[0007] Preferably, cavities are symmetrically provided on both sides of the reinforcing block, a moving block is fixedly connected to one side of the clamping block, and an elastic block is fixedly connected to one side of the moving block.
[0008] Preferably, the clamping block is inserted and connected to the inner wall on one side of the cavity, the moving block is inserted and connected inside the cavity, and the elastic block is fixedly connected to the inner wall on the other side of the cavity.
[0009] Preferably, the pressing group includes a pressing block inserted and connected inside the card hole, the inner walls of the top and bottom ends of the card hole are symmetrically provided with sliding grooves, the top and bottom of the pressing block are symmetrically fixedly connected with sliding blocks, and the sliding blocks are slidably inserted and connected inside the sliding grooves.
[0010] Preferably, the pressing block is inserted and connected in the middle part of the guide member.
[0011] Preferably, a positioning groove is formed at the top of the fixing tube, the tool is inserted and connected inside the positioning groove, and a fixing bolt for fixing the position of the tool is inserted and connected through a thread in the middle of the tool.
[0012] Technical effects and advantages of the utility model:
[0013] The utility model adopts the design of the trapezoidal connecting block, the trapezoidal connecting groove, the clamping assembly and the pressing assembly. When in use, the trapezoidal connecting block on one side of the guide piece is inserted into the interior of the trapezoidal connecting groove, and the position of the trapezoidal connecting block is fixed by the clamping assembly. The position of the guide piece is fixed by the trapezoidal connecting block in the fixed position, so that the guide piece can be fixed without the aid of other tools. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.
[0015] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model.
[0016] Figure 3 It is a front sectional structural schematic diagram of the utility model.
[0017] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure of part A.
[0018] In the figure: 1. fixed cylinder; 2. tool; 3. support block; 4. reinforcement block; 5. guide piece; 6. trapezoidal connecting block; 7. trapezoidal connecting groove; 8. clamping hole; 9. clamping block; 10. cavity; 11. moving block; 12. elastic block; 13. pressing block; 14. sliding groove; 15. sliding block; 16. positioning groove; 17. fixing bolt. 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 1-4A self-centering reaming drill bit shown in the figure comprises a fixed cylinder 1, a tool 2 is arranged on the top of the fixed cylinder 1, a support block 3 is symmetrically fixedly connected to the center of the top of the fixed cylinder 1, a guide member 5 is arranged on one side of the support block 3, a trapezoidal connecting groove 7 is opened on the top of the support block 3, a trapezoidal connecting block 6 is fixedly connected to one side of the guide member 5, the trapezoidal connecting block 6 is inserted and connected inside the trapezoidal connecting groove 7, a clamping assembly for fixing the position of the trapezoidal connecting block 6 is arranged inside the trapezoidal connecting groove 7, and a pressing assembly is arranged in the middle of the trapezoidal connecting block 6.
[0021] It should be noted that the horizontal transverse cross-section of the fixed cylinder 1 is circular, at least two cutting tools 2 are provided, a groove for introducing waste into the fixed cylinder 1 is provided on one side of the fixed cylinder 1 and located at the cutting tool 2, and an arc-shaped groove is provided on the outer wall of the fixed cylinder 1, which is used to discharge the waste that has not entered the fixed cylinder 1 through the groove on the outer wall of the fixed cylinder 1 when in use, two supporting blocks 3 are provided, both of which are fixed to the top of the fixed cylinder 1 by welding, and the trapezoidal connecting groove 7 provided is adapted to the trapezoidal connecting block 6 provided, and when the position of the guide member 5 needs to be fixed, the trapezoidal connecting block 6 on one side thereof is inserted from the top of the trapezoidal connecting groove 7. The end is inserted into the interior of the trapezoidal connecting groove 7. Through the trapezoidal design and the blocking of its two oblique sides, the trapezoidal connecting block 6 is prevented from moving out of the trapezoidal connecting groove 7 from any direction except the vertical direction of the trapezoidal connecting groove 7. The provided clamping assembly is used to limit the trapezoidal connecting block 6 to the interior of the trapezoidal connecting groove 7; the outer wall of the provided guide piece 5 is arc-shaped, and when in use, it is used to take out the guide piece 5 whose one side arc surface is adapted to the arc of the hole wall of the desired expanded hole, so that the guide piece 5 can be penetrated into the interior of the desired expanded hole when in use, and the outer walls of the two provided guide pieces 5 are fitted with the inner wall of the hole of the desired expanded hole, thereby achieving concentric holes between the original hole and the hole position after expansion when expanding the hole.
[0022] Specifically, a reinforcement block 4 is fixedly connected to one side opposite to the plurality of support blocks 3, the snap-in assembly includes a snap-in hole 8 opened in the middle of the trapezoidal connecting block 6, a snap-in block 9 is inserted and connected to the inner wall of one side of the trapezoidal connecting groove 7, the snap-in block 9 is snap-into the inside of the snap-in hole 8, cavities 10 are symmetrically opened on both sides of the reinforcement block 4, a moving block 11 is fixedly connected to one side of the snap-in block 9, an elastic block 12 is fixedly connected to one side of the moving block 11, the snap-in block 9 is inserted and connected to the inner wall of one side of the cavity 10, the moving block 11 is inserted and connected to the inside of the cavity 10, and the elastic block 12 is fixedly connected to the inner wall of the other side of the cavity 10.
[0023] It should be noted that the opened cavity 10 is adapted to the set moving block 11. When the moving block 11 slides in the cavity 10 during use, there is no shaking. The set elastic block 12 is made of rubber material. When the elastic block 12 is squeezed, it will transmit deformation. When the squeezing is lost, the elastic block 12 will restore the deformation. The horizontal longitudinal section of the set clamping block 9 is a right-angled trapezoid. When the trapezoidal connecting block 6 is inserted into the trapezoidal connecting groove 7, the bottom edge of the trapezoidal connecting block 6 first contacts with the hypotenuse of the clamping block 9. After the contact, the ladder continues to move. The position of the trapezoidal connecting block 6 is determined, and the block 9 is pushed to the side away from the trapezoidal connecting block 6 by squeezing the hypotenuse of the block 9, and is moved out of the first trapezoidal connecting groove 7. Through the movement of the block 9, the moving block 11 is driven to squeeze one side of the elastic block 12, so that the elastic block 12 is deformed. When the trapezoidal connecting block 6 moves to the point where the clamping hole 8 opened in the middle is aligned with the block 9, the elastic block 12 recovers the deformation and moves the end of the block 9 into the inside of the clamping hole 8. The trapezoidal connecting block 6 cannot be moved out of the trapezoidal connecting groove 7 due to the restriction of the block 9.
[0024] Specifically, the pressing group includes a pressing block 13 inserted and connected inside the card hole 8, and the inner walls of the top and bottom ends of the card hole 8 are symmetrically provided with sliding grooves 14. The top and bottom of the pressing block 13 are symmetrically fixedly connected with sliding blocks 15. The sliding block 15 is slidably inserted and connected inside the sliding groove 14, and the pressing block 13 is inserted and connected in the middle of the guide member 5.
[0025] It should be noted that when the end of the card block 9 moves into the interior of the card hole 8, the card block 9 pushes the pressing block 13 to move to the side away from the card block 9. When the pressing block 13 moves, it drives the sliding block 15 fixedly connected to it to move. When the sliding block 15 moves to fit the inner wall of one side of the sliding groove 14, the movement of the sliding block 15 in the original direction will be restricted. The movement of the pressing block 13 is restricted by the sliding block 15. When the card block 9 needs to be moved out of the card hole 8, the pressing block 13 is moved to one side of the card block 9, and the card block 9 is moved out of the card hole 8, and then the trapezoidal connecting block 6 is moved upward and moved out of the trapezoidal connecting groove 7.
[0026] Specifically, a positioning groove 16 is formed at the top of the fixing tube 1 , and the tool 2 is inserted and connected inside the positioning groove 16 . A fixing bolt 17 for fixing the position of the tool 2 is inserted and connected through a thread in the middle of the tool 2 .
[0027] It should be noted that when the position of the tool 2 needs to be fixed, the bottom of the tool 2 is first inserted into the interior of the positioning groove 16, and then the fixing bolt 17 is inserted into the tool 2 through one side of the tool 2, and the end thread of the fixing bolt 17 is inserted into the inner wall of one side of the positioning groove 16, and the position of the tool 2 is fixed by the fixing bolt 17.
[0028] 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. A self-centering reaming drill bit, comprising a fixed cylinder (1), a tool (2) is arranged on the top of the fixed cylinder (1), and a support block (3) is fixedly connected to the top of the fixed cylinder (1) in a symmetrical manner, characterized in that: A guide member (5) is provided on one side of the support block (3); a trapezoidal connecting groove (7) is provided on the top of the support block (3); a trapezoidal connecting block (6) is fixedly connected to one side of the guide member (5); the trapezoidal connecting block (6) is inserted and connected inside the trapezoidal connecting groove (7); a clamping assembly for fixing the position of the trapezoidal connecting block (6) is provided inside the trapezoidal connecting groove (7); and a pressing assembly is provided in the middle of the trapezoidal connecting block (6).
2. A self-centering reaming drill bit according to claim 1, characterized in that: A reinforcing block (4) is fixedly connected to one side opposite to the plurality of support blocks (3); the clamping assembly comprises a clamping hole (8) provided in the middle of the trapezoidal connecting block (6); a clamping block (9) is inserted and connected to the inner wall of one side of the trapezoidal connecting groove (7); and the clamping block (9) is clamped inside the clamping hole (8).
3. A self-centering reaming drill bit according to claim 2, characterized in that: Cavities (10) are symmetrically provided on both sides of the reinforcing block (4); a moving block (11) is fixedly connected to one side of the clamping block (9); and an elastic block (12) is fixedly connected to one side of the moving block (11).
4. A self-centering reaming drill bit according to claim 3, characterized in that: The clamping block (9) is inserted and connected to the inner wall of one side of the cavity (10), the moving block (11) is inserted and connected inside the cavity (10), and the elastic block (12) is fixedly connected to the inner wall of the other side of the cavity (10).
5. A self-centering reaming drill bit according to claim 4, characterized in that: The pressing group comprises a pressing block (13) inserted and connected inside the card hole (8), the inner walls of the top and bottom ends of the card hole (8) are symmetrically provided with sliding grooves (14), the top and bottom of the pressing block (13) are symmetrically fixedly connected with sliding blocks (15), and the sliding block (15) is slidably inserted and connected inside the sliding groove (14).
6. A self-centering reaming drill bit according to claim 5, characterized in that: The pressing block (13) is inserted and connected in the middle of the guide member (5).
7. The self-centering reaming drill bit according to claim 1, characterized in that: The top of the fixing tube (1) is provided with a positioning groove (16), the tool (2) is inserted and connected inside the positioning groove (16), and a fixing bolt (17) for fixing the position of the tool (2) is inserted and connected through a thread in the middle of the tool (2).