Twist drill capable of changing drill diameter
By designing a slidable connecting piece and slider on the twist drill, combined with the limiting assembly and spring mechanism, the rapid replacement of twist drills and the switching of different drill diameters is achieved, which solves the problem of inconvenient replacement of twist drills in the prior art, and improves processing efficiency and flexibility.
Patent Information
- Application Number
- CN202421423088.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the prior art, when the twist drill needs to be processed different drill holes, the twist drill needs to be replaced, which makes it inconvenient to change the drill diameter size.
A twist drill that can change the size of the drill diameter is designed. By setting a slidable connecting piece and slider on the drill pipe, combining the limiting assembly and spring mechanism, the drill pipe can be quickly replaced and the switching of different drill diameters.
It realizes rapid replacement of twist drills and switching of different drill diameters, improving processing efficiency and flexibility.
Smart Images
Figure CN222696090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal cutting tools, in particular to a twist drill capable of changing the drill diameter. Background Art
[0002] A twist drill, also known as a spiral drill, is a drill used to drill holes in workpieces. Its name comes from its unique spiral shape. It is also named because its chip groove is spiral and resembles a twist. The twist drill can be clamped on a manual or electric handheld drilling tool or a drilling machine, milling machine, lathe or even a machining center.
[0003] In the prior art, some traditional twist drills need to be replaced during use when different holes need to be processed, and the size of the drill diameter needs to be changed. Therefore, in response to the above problems, a twist drill with changeable drill diameter size is proposed. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a twist drill with a changeable drill diameter, aiming to improve the problem in the prior art that the drill bit cannot be quickly replaced.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a twist drill capable of changing the drill diameter size, comprising a drill rod, the top of the drill rod is fixedly connected with a connecting piece, the outside of the drill rod is slidably connected with a slide cylinder, the inside of the slide cylinder is fixedly connected with a plurality of mounting blocks, a limiting assembly is arranged inside the mounting block, the inside of the mounting block is slidably connected with a top block, the inside of the mounting block is fixedly connected with a sleeve, a spring is arranged inside the sleeve, the inside of the sleeve is slidably connected with a cylindrical sleeve, a through hole is provided at the bottom of the slide cylinder, the inside of the slide cylinder is slidably connected with a fixed block, the outside of the fixed block is provided with a plurality of slots, the outside of the fixed block is provided with two mounting slots, an elastic assembly is arranged inside the mounting slot, the outside of the elastic assembly is slidably connected with a slider, the outsides of the two sliders are fixedly connected with external rings, and the top of the fixed block is fixedly connected with a fixing column.
[0006] As a further description of the above technical solution:
[0007] Each of the limiting components comprises two limiting grooves, the outer portions of the limiting grooves are arranged inside the mounting block, and the inner portions of the limiting grooves are slidably connected to the limiting block.
[0008] As a further description of the above technical solution:
[0009] The elastic component comprises a fixing rod, the outer portion of the fixing rod is fixedly connected to the inner portion of the mounting groove, and the outer portion of the fixing rod is sleeved with a spring 2.
[0010] As a further description of the above technical solution:
[0011] The outside of the drill rod is slidably connected to the inside of the through hole, and the bottom of the connecting piece is in contact with the inside of the slide cylinder.
[0012] As a further description of the above technical solution:
[0013] The outside of the limiting block is slidably connected to the inside of the mounting block, and the adjacent sides of the two limiting blocks are respectively fixedly connected to the outer top and bottom sides of the top block.
[0014] As a further description of the above technical solution:
[0015] One side of the spring one is fixedly connected to the inside of the sleeve, and the other side of the spring one is fixedly connected to the inside of the cylindrical sleeve.
[0016] As a further description of the above technical solution:
[0017] The outside of the cylindrical sleeve is fixedly connected to the outside of the top block, and the bottom of the external ring is provided with a chamfer.
[0018] As a further description of the above technical solution:
[0019] The bottom of the external ring contacts the outside of the top block, and the inside of the external ring is slidably connected to the outside of the fixed block.
[0020] The utility model has the following beneficial effects:
[0021] In the utility model, when replacing the drill rod, it is only necessary to push the external ring downward so that the bottom of the external ring squeezes the top block, causing the top block to slide out from the inside of the slot, and then pull the slide downward so that the slide drives the drill rod and the connecting piece to slide out, and then different drill rods can be replaced, thereby obtaining drill holes with different drill diameters. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A three-dimensional diagram of a twist drill with a variable drill diameter proposed by the utility model;
[0023] Figure 2 This is a schematic diagram of the connecting piece structure of a twist drill capable of changing the drill diameter proposed by the utility model;
[0024] Figure 3 This is a schematic diagram of the top block structure of a twist drill capable of changing the drill diameter proposed by the utility model;
[0025] Figure 4This is a cross-sectional view of the slide tube structure of a twist drill capable of changing the drill diameter proposed by the utility model;
[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0027] Figure 6 The utility model is a schematic diagram of a slider structure of a twist drill capable of changing the drill diameter.
[0028] Legend:
[0029] 1. Drill rod; 2. Connecting piece; 3. Slide; 4. Mounting block; 5. Limiting groove; 6. Limiting block; 7. Top block; 8. Sleeve; 9. Spring 1; 10. Cylinder sleeve; 11. Through hole; 12. Fixing block; 13. Slot; 14. Mounting groove; 15. Fixing rod; 16. Spring 2; 17. Sliding block; 18. External ring; 19. Fixing column. DETAILED DESCRIPTION
[0030] 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.
[0031] Reference Figure 1 - Figure 3 As shown, the utility model provides an embodiment: a twist drill with changeable drill diameter, comprising a drill rod 1, the drill rod 1 is used to drill holes in objects, a connecting piece 2 is fixedly connected to the top of the drill rod 1, the connecting piece 2 is used to limit the drill rod 1 during installation, a slide cylinder 3 is slidably connected to the outside of the drill rod 1, the slide cylinder 3 is used to connect the drill rod 1 with the connecting piece 2, a plurality of mounting blocks 4 are fixedly connected to the inside of the slide cylinder 3, the mounting blocks 4 are used to open a limiting groove 5.
[0032] Reference Figure 4 - Figure 5As shown, a limiting assembly is arranged inside the mounting block 4, each limiting assembly includes two limiting grooves 5, the limiting grooves 5 are for allowing the limiting blocks 6 to slide, the outside of the limiting grooves 5 are arranged inside the mounting block 4, the limiting grooves 5 are internally slidably connected to the limiting blocks 6, the limiting blocks 6 are for connecting to the top blocks 7, the outside of the limiting blocks 6 are slidably connected to the inside of the mounting block 4, the adjacent sides of the two limiting blocks 6 are respectively fixedly connected to the top and bottom sides of the outside of the top blocks 7, the inside of the mounting block 4 is slidably connected to the top blocks 7, the top blocks 7 are for engaging with the slots 13, the inside of the mounting block 4 is fixedly connected to the sleeve 8, the sleeve 8 and the cylindrical sleeve 10 are In order to prevent the spring 19 from deforming, a spring 19 is arranged inside the sleeve 8. The spring 19 is used to cooperate with the cylindrical sleeve 10 to push the top block 7. One side of the spring 19 is fixedly connected to the inside of the sleeve 8, and the other side of the spring 19 is fixedly connected to the inside of the cylindrical sleeve 10. The inside of the sleeve 8 is slidably connected with the cylindrical sleeve 10, and the outside of the cylindrical sleeve 10 is fixedly connected to the outside of the top block 7. The bottom of the external ring 18 is chamfered. A through hole 11 is opened at the bottom of the slide 3. The through hole 11 is used to allow the drill rod 1 to slide. The outside of the drill rod 1 is slidably connected to the inside of the through hole 11, and the bottom of the connecting piece 2 is in contact with the inside of the slide 3.
[0033] Reference Figure 6 As shown, the interior of the slide 3 is slidably connected with a fixed block 12, the fixed block 12 is for opening a card slot 13, a plurality of card slots 13 are opened on the outside of the fixed block 12, the card slot 13 is for engaging and fixing with the top block 7, the outside of the fixed block 12 is opened with two mounting grooves 14, the mounting groove 14 is for connecting a fixing rod 15, an elastic component is arranged inside the mounting groove 14, the elastic component includes a fixing rod 15, the fixing rod 15 is for making the slider 17 slide outside it, and the outside of the fixing rod 15 is fixedly connected to the mounting groove 14, the outside of the fixing rod 15 is sleeved with a spring 2 16, the outside of the elastic component is slidably connected with a slider 17, the slider 17 is used to connect to the external ring 18, the outsides of the two sliders 17 are fixedly connected with the external ring 18, the external ring 18 is used to push the top block 7 so that the top block 7 retracts into the inside of the mounting block 4, the bottom of the external ring 18 contacts the outside of the top block 7, the inside of the external ring 18 is slidably connected to the outside of the fixing block 12, and the top of the fixing block 12 is fixedly connected with a fixing column 19.
[0034] Working principle: When the staff needs to drill different rotation diameters, the drill rod 1 needs to be quickly replaced. When in use, it is only necessary to first install the fixing column 19 on the driving source, and then slide the drill rod 1 into the interior of the slide tube 3. The connecting piece 2 on the top of the drill rod 1 will prevent the drill rod 1 from sliding out of the through hole 11. Then, the drill rod 1 cooperates with the slide tube 3 to slide to the outside of the fixed block 12, so that the bottom of the fixed block 12 pushes the top block 7, so that the top block 7 cooperates with the limit block 6 to slide inside the mounting block 4, and then After sliding to the appropriate position, the top block 7 is pushed by the sleeve 8 in cooperation with the spring 9 and the cylindrical sleeve 10, so that the top block 7 slides into the interior of the slot 13, so that the top block 7 is engaged with the slot 13. Then, when the drill rod 1 needs to be replaced, it is only necessary to push the external ring 18 downward so that the bottom of the external ring 18 squeezes the top block 7, so that the top block 7 slides out from the interior of the slot 13, and then pull the slide 3 downward so that the slide 3 drives the drill rod 1 and the connecting piece 2 to slide out, and then different drill rods 1 can be replaced.
[0035] 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 twist drill with a variable drill diameter, comprising a drill rod (1), characterized in that: The top of the drill rod (1) is fixedly connected with a connecting piece (2), the outside of the drill rod (1) is slidably connected with a slide tube (3), the interior of the slide tube (3) is fixedly connected with a plurality of mounting blocks (4), a limiting assembly is arranged inside the mounting block (4), a top block (7) is slidably connected inside the mounting block (4), a sleeve (8) is fixedly connected inside the mounting block (4), a spring (9) is arranged inside the sleeve (8), a cylindrical sleeve (10) is slidably connected inside the sleeve (8), and the slide tube ( A through hole (11) is provided at the bottom of the slide cylinder (3), a fixed block (12) is slidably connected inside the slide cylinder (3), a plurality of slots (13) are provided outside the fixed block (12), two mounting slots (14) are provided outside the fixed block (12), an elastic component is provided inside the mounting slot (14), a slider (17) is slidably connected outside the elastic component, an external ring (18) is fixedly connected outside the two sliders (17), and a fixing column (19) is fixedly connected to the top of the fixed block (12).
2. A twist drill with variable drill diameter according to claim 1, characterized in that: Each of the limiting components comprises two limiting grooves (5), the outside of the limiting grooves (5) being opened inside the mounting block (4), and the inside of the limiting grooves (5) being slidably connected to the limiting block (6).
3. A twist drill with variable drill diameter according to claim 1, characterized in that: The elastic component comprises a fixing rod (15), the outside of the fixing rod (15) is fixedly connected to the inside of the installation groove (14), and the outside of the fixing rod (15) is sleeved with a second spring (16).
4. A twist drill with variable drill diameter according to claim 1, characterized in that: The outside of the drill rod (1) is slidably connected to the inside of the through hole (11), and the bottom of the connecting piece (2) is in contact with the inside of the slide cylinder (3).
5. The twist drill with variable drill diameter according to claim 2, characterized in that: The outside of the limit block (6) is slidably connected to the inside of the mounting block (4), and the adjacent sides of the two limit blocks (6) are respectively fixedly connected to the top and bottom sides of the outside of the top block (7).
6. The twist drill with variable drill diameter according to claim 1, characterized in that: One side of the spring one (9) is fixedly connected to the inside of the sleeve (8), and the other side of the spring one (9) is fixedly connected to the inside of the cylindrical sleeve (10).
7. The twist drill with variable drill diameter according to claim 1, characterized in that: The outside of the cylindrical sleeve (10) is fixedly connected to the outside of the top block (7), and the bottom of the external ring (18) is provided with a chamfer.
8. The twist drill with variable drill diameter according to claim 1, characterized in that: The bottom of the external ring (18) contacts the outside of the top block (7), and the inside of the external ring (18) is slidably connected to the outside of the fixed block (12).