A new drill jig with special anti-drop mechanism

Abstract

The application discloses a novel drill jig with a special anti-falling mechanism and belongs to the technical field of drill jigs. The novel drill jig is characterized by comprising a workpiece and a drill jig body. T-shaped grooves are symmetrically arranged at both sides of the workpiece. A drill jig pipe core is arranged at the bottom surface of the drill jig body. The drill jig pipe core is matched with the opening of the workpiece. A slot is arranged at both sides of the drill jig body and matched with the T-shaped grooves. A T-shaped positioning key is movably connected between the T-shaped grooves and the slot. A pressing mechanism is arranged in the drill jig pipe core and used for reinforcing the stability of the workpiece and the drill jig body. Limiting mechanisms are further arranged on the side surface of the drill jig body and used for connecting and guiding the workpiece and the drill jig body. The novel drill jig can improve the production efficiency, meet the requirement of the drawing on the surface roughness Ra0.8 of the eccentric hole, make the drill jig installation more convenient, reduce the production cost, and improve the production precision and machining quality.

Description

Technical Field

[0001] This invention relates to the field of drilling jig technology, and more specifically, to a novel drilling jig with a special anti-detachment mechanism. Background Technology

[0002] As shown in the attached diagram of the instruction manual. Figure 8 As shown, there is an eccentric hole on the deep hole step surface, which requires deep hole machining. However, because it is an eccentric hole, the normal machining method cannot be completed without the positioning support of the boring bar. The only option is to use a drill jig to position the large hole wall, and the fitter uses a radial drill to perform the drilling.

[0003] The existing technology generally uses a radial drilling machine with an alloy drill bit for machining, which is much less efficient than CNC deep hole machining. Moreover, this machining method can only achieve a surface roughness of Ra3.2 at most, which cannot meet the requirement of Ra0.8 for the surface roughness of the inner hole of the assembly. At the same time, the installation and disassembly of the drill jig are also very inconvenient. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a novel drill jig with a special anti-detachment mechanism. This mechanism can improve production efficiency while meeting the drawing requirements for a surface roughness of Ra0.8 for the eccentric hole, making drill jig installation more convenient, reducing production costs, and improving production accuracy and processing quality.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A novel drill jig with a special anti-detachment mechanism includes a workpiece and a drill jig body. T-shaped grooves are symmetrically formed on both sides of the opening end of the workpiece. A drill jig core is provided on the bottom surface of the drill jig body, and the drill jig core matches the opening of the workpiece. Slots are formed on both sides of the drill jig body that match the T-shaped grooves. A T-shaped positioning key is movably engaged between the T-shaped grooves and the slots. A clamping mechanism for reinforcing the stability of the workpiece and the drill jig body is provided inside the drill jig core. A limiting mechanism for guiding the connection between the workpiece and the drill jig body is also provided on the side of the drill jig body.

[0009] Furthermore, the workpiece and the drill jig have the same outer diameter, and the lengths of the T-slot and the slot are the same as the length of the T-shaped positioning key.

[0010] Furthermore, the T-shaped locating key has a connecting slot, and the bottom surface of the slot is provided with a first threaded hole that matches the connecting slot. The T-shaped locating key is fixed to the drill jig body by an internal hexagon screw.

[0011] Furthermore, the bottom surface of the drill jig body is provided with a reinforcing ring that matches the eccentric through hole, and the reinforcing ring is provided with positioning through holes evenly distributed on the reinforcing ring. The top surface of the drill jig body is provided with a positioning groove that matches the positioning through hole.

[0012] Furthermore, the clamping mechanism includes a longitudinal threaded hole formed in the inner wall of the drill jig core, and a clamping screw is threaded inside the longitudinal threaded hole.

[0013] Furthermore, the limiting mechanism includes a second threaded hole symmetrically opened on the side of the drill jig body and a high-strength torsion spring shaft fixedly connected to the second threaded hole. Side support arms are symmetrically rotatably connected to both ends of the high-strength torsion spring shaft, and limiting rollers are uniformly rotatably installed on the side support arms.

[0014] Furthermore, one side of the high-strength torsion spring shaft is provided with an arc groove that matches the arc surface of the drill jig body, and on the opposite side, a screw through hole that matches the second threaded hole is symmetrically provided. The screw through hole and the second threaded hole are connected by an internal hexagon screw.

[0015] Furthermore, the top of the side support arm is bent into an arc shape, and the bending direction is away from the workpiece.

[0016] Furthermore, the limiting roller is a concave roller, and the concave surface is an arc-shaped surface that matches the outer arc surface of the workpiece.

[0017] Furthermore, the second threaded hole and the slot are perpendicularly intersecting each other, and the slot is located on both sides of the symmetrical side of the eccentric circular hole of the drill jig body.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of this invention are:

[0020] (1) This solution is equipped with T-slots, slots, first threaded holes, T-type locating keys and connecting through slots. A set of T-type locating keys is used to position the workpiece and the drill jig body, which minimizes the inconvenience of blank size, external turning of the thread, production of thread caps, and installation and disassembly of the drill jig during processing. This improves production efficiency, meets the requirements of the drawings for the surface roughness Ra of the eccentric hole, reduces production costs, and improves production accuracy and processing quality.

[0021] (2) This solution is equipped with longitudinal screw holes and clamping screws. When processing workpieces with large eccentric hole diameters, the workpiece and drill jig body can be reinforced on the inside by longitudinal screw holes and clamping screws, which increases the processing stability of the drill jig body and makes the processing accuracy higher.

[0022] (3) This solution is equipped with a limiting mechanism. When the bottom end of the workpiece contacts the limiting roller at the top, the torsion spring force of the strong torsion spring shaft is used to apply a force in the same direction to both sides of the workpiece through two sets of limiting mechanisms. At the same time, the concave surface of the limiting roller abuts against the outer surface of the workpiece. Through the guidance of the limiting roller, the central axis of the workpiece is restricted to coincide with the central axis of the drill jig body. This ensures that the position will not deviate during the downward assembly process and the assembly accuracy is higher. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the drill jig core of the present invention;

[0026] Figure 4 This is a schematic diagram of the T-shaped positioning key structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the limiting mechanism structure of the present invention;

[0028] Figure 6 This is a partial structural diagram of the limiting mechanism of the present invention;

[0029] Figure 7 This is a top view of the structure of the present invention;

[0030] Figure 8 This is a schematic diagram of an eccentric hole structure with a stepped surface in the prior art.

[0031] Explanation of the labels in the diagram:

[0032] 1. Workpiece; 2. Drill jig body; 3. Drill jig core; 4. T-slot; 5. Slot; 6. First threaded hole; 7. T-shaped locating key; 8. Connecting through slot; 9. Reinforcing ring; 10. Locating through hole; 11. Locating groove; 12. Longitudinal screw hole; 13. Clamping screw; 14. Second threaded hole; 15. High-strength torsion spring shaft; 16. Screw through hole; 17. Side support arm; 18. Limiting roller. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-7 A novel drill jig with a special anti-detachment mechanism includes a workpiece 1 and a drill jig body 2. T-shaped grooves 4 are symmetrically opened on both sides of the opening end of the workpiece 1. A drill jig core 3 is provided on the bottom surface of the drill jig body 2. The drill jig core 3 matches the opening of the workpiece 1. A straight groove 5 is opened on both sides of the drill jig body 2 to match the T-shaped grooves 4. A T-shaped positioning key 7 is movably engaged between the T-shaped grooves 4 and the straight grooves 5. A clamping mechanism for reinforcing the stability of the workpiece 1 and the drill jig body 2 is provided inside the drill jig core 3. A limiting mechanism for guiding the connection between the workpiece 1 and the drill jig body 2 is also provided on the side of the drill jig body 2.

[0035] See Figure 1 and Figure 2 The workpiece 1 and the drill jig body 2 have the same outer diameter. At the same time, the lengths of the T-slot 4 and the slot 5 are the same as the length of the T-position key 7. This makes the positioning between the workpiece 1 and the drill jig body 2 more accurate during assembly. In addition, the T-position key 7 is more stable when connected to the T-slot 4 and the slot 5.

[0036] The T-shaped locating key 7 has a connecting groove 8, and the bottom surface of the slot 5 matches the connecting groove 8 and has a first threaded hole 6. The T-shaped locating key 7 and the drill jig body 2 are fixed together by an internal hexagon screw. By using the internal hexagon screw to pass through the connecting groove 8 and the first threaded hole 6, the T-shaped locating key 7 and the drill jig body 2 can be fixed together, thereby fixing the workpiece 1 and the drill jig body 2 together.

[0037] See Figure 1 and Figure 2 The bottom surface of the drill jig body 2 is provided with a reinforcing ring 9 that matches the eccentric through hole. The reinforcing ring 9 is provided with evenly spaced positioning through holes 10. The top surface of the drill jig body 2 is provided with a positioning groove 11 that matches the positioning through hole 10. The reinforcing ring 9 is positioned and fixed by using the positioning through hole 10 and the positioning groove 11, which facilitates the connection of drilling instruments and improves the processing accuracy.

[0038] See Figure 2 and Figure 3 When machining a workpiece 1 with a large eccentric hole diameter, a clamping mechanism can be set up to facilitate the operation of the clamping mechanism. The clamping mechanism includes a longitudinal screw hole 12 opened in the inner wall of the drill jig core 3. A clamping screw 13 is threaded inside the longitudinal screw hole 12. The clamping screw 13 can be screwed in the longitudinal screw hole 12 to make the clamping screw 13 press against the inner wall of the workpiece 1, thus providing secondary reinforcement and making the connection stability of the drill jig body 2 higher.

[0039] See Figure 5-7The limiting mechanism includes a second threaded hole 14 symmetrically opened on the side of the drill jig body 2 and a strong torsion spring shaft 15 fixedly connected to the second threaded hole 14. The two ends of the strong torsion spring shaft 15 are symmetrically rotatably connected to side support arms 17, and the side support arms 17 are uniformly rotatably mounted on the side support arms 17.

[0040] The high-strength torsion spring shaft 15 has an arc-shaped groove on one side that matches the arc-shaped surface of the drill jig body 2, and a screw through hole 16 that matches the second threaded hole 14 is symmetrically opened on the opposite side. The screw through hole 16 and the second threaded hole 14 are connected by an internal hexagon screw. In this way, during installation, the arc-shaped groove on the side of the high-strength torsion spring shaft 15 can fit against the outer surface of the drill jig body 2. When the internal hexagon screw is used for fixing through the screw through hole 16 and the second threaded hole 14, the fixing stability is higher.

[0041] Among them, the top of the side support arm 17 is bent into an arc shape, and the bending direction is away from the workpiece 1. Meanwhile, the limiting roller 18 is a concave roller, and the concave surface is an arc surface that matches the outer arc surface of the workpiece 1.

[0042] When the bottom end of the workpiece 1 contacts the limiting roller 18 located at the top, the torsion spring force of the strong torsion spring shaft 15 can be used to apply a force in the same direction to both sides of the workpiece 1 simultaneously using the two limiting mechanisms. At the same time, the concave surface of the limiting roller 18 abuts against the outer surface of the workpiece 1. Through the guidance of the limiting roller 18, the central axis of the workpiece 1 is restricted to coincide with the central axis of the drill jig body 2. This ensures that the position will not deviate during the downward assembly process and the assembly accuracy is higher.

[0043] See Figure 1 and Figure 7 The second threaded hole 14 and the slot 5 are set perpendicularly to each other, and the slot 5 is located on both sides of the symmetrical side of the eccentric circular hole of the drill jig body 2. This allows the workpiece 1 to be positioned around the outer side, ensuring the connection stability of the drill jig body 2. It will not easily shift during drilling, resulting in higher processing accuracy.

[0044] When in use: First, a limiting mechanism can be installed using the second threaded hole 14, the screw through hole 16 and the internal hexagon screw as needed. During the insertion of the workpiece 1 and the drill jig core 3, the central axis of the workpiece 1 is restricted to coincide with the central axis of the drill jig body 2, so that the position will not deviate during the downward assembly process.

[0045] Secondly, after the workpiece 1 contacts the drill jig body 2, the T-slot 4 and the slot 5 can be aligned. At the same time, the internal hexagon screw is used to fix the T-shaped positioning key 7 to the drill jig body 2 through the connecting slot 8, thereby locking the workpiece 1 and the drill jig body 2 into one. Then, the clamping screw 13 can be tightened with a tool so that its end is pressed against the inner wall of the workpiece 1 to perform a secondary clamping and improve the locking stability.

[0046] Finally, the eccentric hole on the deep hole step surface of the workpiece 1 is machined using the drill jig body 2 and the drilling tool. The workpiece 1 and the drill jig body 2 are positioned using the T-type locating key 7, which minimizes the inconvenience of blank size, external turning of the thread, making of thread cap, and installation and disassembly of the drill jig during machining.

[0047] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A novel drill jig with a special anti-detachment mechanism, comprising a workpiece (1) and a drill jig body (2), characterized in that: The workpiece (1) has T-shaped grooves (4) symmetrically opened on both sides of the opening end. The bottom surface of the drill jig body (2) is provided with a drill jig core (3). The drill jig core (3) matches the opening of the workpiece (1). The drill jig body (2) has slots (5) on both sides that match the T-shaped grooves (4). A T-shaped positioning key (7) is movably engaged between the T-shaped grooves (4) and the slots (5). The drill jig core (3) is provided with a clamping mechanism to strengthen the stability of the workpiece (1) and the drill jig body (2). The side of the drill jig body (2) is also provided with a limiting mechanism for connecting and guiding the workpiece (1) and the drill jig body (2). The workpiece (1) and the drill jig body (2) have the same outer diameter, and the length of the T-slot (4) and the straight slot (5) are the same as the length of the T-shaped positioning key (7); The T-shaped locating key (7) has a connecting slot (8), and the bottom surface of the slot (5) matches the connecting slot (8) and has a first threaded hole (6). The T-shaped locating key (7) and the drill jig body (2) are fixed together by internal hexagon screws. The top surface of the drill jig body (2) is provided with a reinforcing ring (9) that matches the eccentric through hole. The reinforcing ring (9) is provided with a positioning through hole (10) evenly. The top surface of the drill jig body (2) is provided with a positioning groove (11) that matches the positioning through hole (10). The clamping mechanism includes a longitudinal screw hole (12) opened in the inner wall of the drill core (3), and a clamping screw (13) is threaded inside the longitudinal screw hole (12); The limiting mechanism includes a second threaded hole (14) symmetrically opened on the side of the drill jig body (2) and a high-strength torsion spring shaft (15) fixedly connected to the second threaded hole (14). The two ends of the high-strength torsion spring shaft (15) are symmetrically rotatably connected to side support arms (17), and a limiting roller (18) is uniformly rotatably installed on the side support arms (17).

2. The novel drill jig with a special anti-detachment mechanism according to claim 1, characterized in that: The high-strength torsion spring shaft (15) has an arc groove on one side that matches the arc surface of the drill jig body (2), and a screw through hole (16) that matches the second threaded hole (14) is symmetrically opened on the opposite side. The screw through hole (16) and the second threaded hole (14) are connected by an internal hexagon screw.

3. A novel drill jig with a special anti-detachment mechanism according to claim 1, characterized in that: The top of the side support arm (17) is bent into an arc shape, and the bending direction is away from the workpiece (1).

4. A novel drill jig with a special anti-detachment mechanism according to claim 1, characterized in that: The limiting roller (18) is a concave roller, and the concave surface is an arc surface that matches the outer arc surface of the workpiece (1).

5. A novel drill jig with a special anti-detachment mechanism according to claim 1, characterized in that: The second threaded hole (14) and the slot (5) are arranged perpendicularly to each other, and the slot (5) is located on both sides of the symmetrical side of the eccentric circular hole of the drill jig body (2).

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