Perforating device for mechanical parts
By introducing a trimming knife and spring design into the hole punching device, automatic trimming is achieved during the hole punching process, solving the hole edge burrs problem of mechanical spare parts, and improving processing efficiency and quality.
Patent Information
- Application Number
- CN202323484720.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In the drilling process of mechanical spare parts, in order to ensure the smoothness and beauty of the holes and prevent scratches on the edges of the holes, additional steps are required to clean the holes burrs, resulting in low processing efficiency.
A hole punching device including a drill bit, a trimming knife and a spring is designed. During the punching process, the trimming knife automatically trims the edge of the hole through the spring's elastic force to avoid burrs, and passes through rolling balls and arcs. The limit plate ensures that the aperture remains unchanged.
It improves the flatness and aesthetics of the hole edges, avoids the generation of burrs, improves the quality of mechanical parts, and improves the processing efficiency.
Smart Images
Figure CN222307449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical parts processing, in particular to a punching device for mechanical parts. Background Art
[0002] Mechanical parts refer to various parts used to assemble and repair mechanical equipment or mechanical systems. They are usually independent and relatively small parts, but they play a vital role in mechanical systems.
[0003] In the punching process of mechanical parts, in order to ensure the flatness and beauty of the processed holes and prevent the hole edges from scratching people, the mechanical parts after punching need additional steps to clean the burrs on the hole edges, and the processing efficiency of mechanical parts is not high.
[0004] In view of this problem, the applicant has improved a punching device for mechanical parts. Summary of the invention
[0005] The purpose of the utility model is to solve the problems raised in the above background technology. The utility model provides a punching device for mechanical parts.
[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:
[0007] A punching device for mechanical parts comprises a drill bit, one end of the drill bit is provided with teeth, the other end of the drill bit is fixed with a drill rod, the drill rod is penetrated by a mounting slot, two symmetrically arranged trimming knives are movably arranged inside the mounting slot, a spring is connected between the two trimming knives, the cross-section of the trimming knives is an isosceles triangle, two sides of equal length of the trimming knives are both constructed in a blade shape, the two sides of equal length of the trimming knives are both located outside the mounting slot, and the opposite sides of the two trimming knives are parallel.
[0008] Preferably, a rolling ball is connected to the upper ball at one end of the trimming knife, and the rolling ball is located between two sides of equal length of the trimming knife.
[0009] Preferably, a connecting plate is fixed on the opposite sides of the two trimming knives, the spring is connected between the two connecting plates, the width of the connecting plate is greater than the thickness of the trimming knives, and two symmetrical arc-shaped limit plates are installed on the outer wall of the drill rod, and the two ends of the arc-shaped limit plates are respectively located at the two ends of the mounting groove and correspond to the two connecting plates respectively.
[0010] Preferably, two symmetrical slots are provided on the outer wall of the drill rod, both ends of the slots are connected to the mounting slots, the two slots correspond to the two arc-shaped limit plates respectively, the arc-shaped limit plates are movably arranged inside the corresponding slots, through-holes are provided on the arc-shaped limit plates, threaded grooves corresponding to the through-holes are provided on the inner wall of the slots, a screw is movably inserted into the through-hole and one end of the screw is threadedly inserted into the threaded groove, and a knob is fixed to the other end of the screw.
[0011] Preferably, a cross slot is formed at one end of the knob facing away from the screw. Beneficial Effects
[0012] In the utility model, the design of the trimming knife makes the hole edge cleaning smoother and more beautiful, avoids the generation of burrs, improves the quality of mechanical parts, and the setting of the spring can move the two trimming knives to the inside of the installation groove to avoid expanding the diameter of the processed hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0015] Figure 2 For this utility model Figure 1 A three-dimensional cross-sectional view of
[0016] Figure 3 For this utility model Figure 1 A three-dimensional cross-sectional view from another direction;
[0017] Figure 4 This is an exploded view of the present invention.
[0018] Figure 1-Figure 4 middle:
[0019] 1. Drill bit; 2. Teeth; 3. Drill rod; 4. Mounting slot; 5. Trimming knife; 6. Spring; 31. Arc limit plate; 32. Slot; 33. Perforation; 34. Threaded groove; 35. Screw; 36. Knob; 37. Cross slot; 51. Roller ball; 52. Connecting plate. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.
[0021] The present application provides a punching device for mechanical parts, which is mainly used to solve the problem that in the punching process of mechanical parts, in order to ensure the flatness and beauty of the processed holes and prevent the hole edges from scratching personnel, the mechanical parts after punching need to be cleaned of the burrs on the hole edges in another step, and the processing efficiency of the mechanical parts is not high. The following technical solutions are provided. Figure 1-Figure 4 Make a detailed description:
[0022] A punching device for mechanical parts mainly comprises a drill bit 1, which is installed on a punching machine. One end of the drill bit 1 is provided with teeth 2 for punching holes. A drill rod 3 is fixed to the other end of the drill bit 1. A mounting slot 4 is provided through the drill rod 3. Two symmetrically arranged trimming knives 5 are movably arranged inside the mounting slot 4. A spring 6 is connected between the two trimming knives 5. The cross section of the trimming knives 5 is an isosceles triangle. The two sides of the trimming knives 5 of equal length are both constructed as a knife edge. The two sides of the trimming knives 5 of equal length are both located outside the mounting slot 4. The opposite sides of the two trimming knives 5 are parallel. When the device is in use, Figure 1 It is a front view. The end of the drill bit 1 with the teeth 2 first contacts the mechanical parts, and the drill bit 1 rotates at a high speed to perform drilling. When the trimming cutter 5 moves to the top of the processed hole, the bottom side of the trimming cutter 5 fits with the top side of the processed hole. Under the rotation of the drill bit 1, the two trimming cutters 5 trim the top side of the processed hole to avoid the appearance of burrs. As the drill bit 1 descends, the drill bit 1 opens the processed hole. At this time, under the elastic force of the spring 6, the top side of the trimming cutter 5 fits with the bottom side of the processed hole. Under the rotation of the drill bit 1, the bottom side of the processed hole is trimmed to remove burrs. In order to ensure that the burrs on the side of the processed hole are completely removed, the trimming cutter 5 will trim the bottom and top sides of the processed hole again during the rising and resetting process of the drill bit 1, which can ensure the trimming effect.
[0023] For further information, see Figure 2 , Figure 3 and Figure 4 A rolling ball 51 is connected to the upper ball of one end of the trimming knife 5, and the rolling ball 51 is located between two sides of equal length of the trimming knife 5. In order to prevent the middle part of the trimming knife 5 from fitting against the inner wall of the processing hole after the trimming knife 5 enters the processing hole, thereby increasing the diameter of the processing hole, the rolling ball 51 can prevent the trimming knife 5 from contacting the inner wall of the processing hole.
[0024] In this example, see Figure 3 and Figure 4A connecting plate 52 is fixed on the opposite side of the two trimming knives 5, and a spring 6 is connected between the two connecting plates 52. The width of the connecting plate 52 is greater than the thickness of the trimming knives 5. Two symmetrical arc-shaped limit plates 31 are installed on the outer wall of the drill rod 3. The two ends of the arc-shaped limit plates 31 are respectively located at the two ends of the mounting groove 4 and correspond to the two connecting plates 52 respectively. The setting of the two arc-shaped limit plates 31 can prevent the two trimming knives 5 from detaching from the mounting groove 4.
[0025] Furthermore, in order to facilitate assembly and replacement of the damaged trimming blade 5, please refer to Figure 2 , Figure 3 and Figure 4 Two symmetrical slots 32 are provided on the outer wall of the drill rod 3, and both ends of the slots 32 are connected to the mounting slot 4. The two slots 32 correspond to the two arc-shaped limit plates 31 respectively. The arc-shaped limit plates 31 are movably fixed inside the corresponding slots 32. A through hole 33 is formed through the arc-shaped limit plate 31. A threaded groove 34 corresponding to the through hole 33 is formed on the inner wall of the slot 32. A screw 35 is movably inserted into the through hole 33, and one end of the screw 35 is threadedly inserted into the threaded groove 34. A knob 36 is fixed to the other end of the screw 35. The device is installed During assembly, firstly, one of the trimming knives 5 is passed through the installation slot 4, so that the spring 6 is located inside the installation slot 4, and at the same time, the two connecting plates 52 are also located inside the installation slot 4, then the two arc-shaped limiting plates 31 are respectively inserted into the inside of the two slots 32, and the ends of the arc-shaped limiting plates 31 limit the connecting plates 52, and finally, one end of the screw 35 is passed through the through hole 33 and inserted into the inside of the threaded slot 34, and the knob 36 is turned to make the knob 36 contact the arc-shaped limiting plate 31, and at this time, the arc-shaped limiting plate 31 is fixed inside the slot 32 to limit the trimming knife 5;
[0026] See also Figure 4 A cross slot 37 is provided at one end of the knob 36 facing away from the screw 35. The cross slot 37 is provided to facilitate the operator to use a screwdriver or other tool to turn the knob 36, thereby improving the convenience of operation and ensuring the fixing effect.
[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A punching device for mechanical parts, characterized in that: The invention comprises a drill bit (1), one end of which is provided with teeth (2), and the other end of which is fixed with a drill rod (3), the drill rod (3) being provided with a mounting groove (4) running through it, two symmetrically arranged trimming knives (5) being movably arranged inside the mounting groove (4), a spring (6) being connected between the two trimming knives (5), the cross section of the trimming knives (5) being an isosceles triangle, two sides of equal length of the trimming knives (5) being both constructed in the shape of a knife edge, the two sides of equal length of the trimming knives (5) being both located outside the mounting groove (4), and opposite sides of the two trimming knives (5) being parallel.
2. A punching device for mechanical parts according to claim 1, characterized in that: A rolling ball (51) is connected to the upper ball of one end of the trimming knife (5), and the rolling ball (51) is located between two sides of equal length of the trimming knife (5).
3. The punching device for mechanical parts according to claim 1, characterized in that: A connecting plate (52) is fixed on opposite sides of the two trimming knives (5), the spring (6) is connected between the two connecting plates (52), the width of the connecting plate (52) is greater than the thickness of the trimming knives (5), and two symmetrical arc-shaped limit plates (31) are installed on the outer side wall of the drill rod (3), and the two ends of the arc-shaped limit plates (31) are respectively located at the two ends of the installation groove (4) and respectively correspond to the two connecting plates (52).
4. A punching device for mechanical parts according to claim 3, characterized in that: Two symmetrical slots (32) are provided on the outer wall of the drill rod (3), both ends of the slots (32) are connected to the mounting slot (4), the two slots (32) correspond to the two arc-shaped limit plates (31) respectively, the arc-shaped limit plates (31) are movably fixed inside the corresponding slots (32), a through hole (33) is provided through the arc-shaped limit plate (31), a threaded slot (34) corresponding to the through hole (33) is provided on the inner wall of the slot (32), a screw (35) is movably inserted into the through hole (33), one end of the screw (35) is threadedly inserted into the threaded slot (34), and the other end of the screw (35) is fixed with a knob (36).
5. A punching device for mechanical parts according to claim 4, characterized in that: A cross slot (37) is formed at one end of the knob (36) facing away from the screw (35).