Drilling jig capable of accurately positioning distance between two hole sites

Abstract

The drilling jig capable of accurately positioning the distance between the two hole sites comprises a jig body, one end of the top face of the jig body protrudes upwards to form a boss, a workpiece positioning hole horizontally penetrating through the two end walls of the boss is formed in the boss, and a drill bit positioning hole vertically extending to the workpiece positioning hole is formed in the top face of the boss. An upper positioning groove vertically extending downwards to the workpiece positioning hole is formed in the edge of the top face of the boss, a first limiting pin is inserted into the upper positioning groove, a limiting hole transversely extending to the workpiece positioning hole is formed in the side wall of the boss, and a second limiting pin is inserted into the limiting hole. According to the utility model, the workpiece positioning hole is matched with the second limiting pin, so that the displacement and vibration of the workpiece are effectively reduced; the first limiting pin is inserted into the hole of the machined part with the drilled hole, so that the first limiting pin is clamped into the upper positioning groove, the distance between the drilled position and the distance between the workpiece positioning hole are determined, and accurate positioning of the position, needing to be drilled, of the machined part is achieved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for mechanical processing, specifically a drilling fixture for accurately positioning the distance between two holes. Background Technology

[0002] In the machining of mechanical parts, ensuring the accuracy of the distance between two holes on the workpiece is crucial. However, current traditional drilling fixtures have the following problems in this regard:

[0003] 1. Insufficient positioning accuracy: Ordinary fixtures, even with manual adjustment, still struggle to accurately set and control the distance between two holes, resulting in significant hole position deviations. For example, in the machining of automotive engine cylinder heads, the distance deviation between the fuel injector mounting hole and the air intake hole affects the engine's fuel injection effect and intake efficiency, thereby reducing engine performance.

[0004] Second, the operation is cumbersome and inefficient: To ensure the hole spacing, workers often need to measure and adjust the workpiece position and fixture parameters multiple times, making the operation complex and time-consuming. For example, in the production of electronic device chassis, there are strict requirements for the distance between heat dissipation holes and mounting holes. The frequent measurement and adjustment under traditional fixtures significantly increases the processing time of a single chassis, resulting in low production efficiency.

[0005] Therefore, it is necessary to develop a drilling fixture that can accurately locate the distance between two holes. Utility Model Content

[0006] The purpose of this utility model is to provide a drilling fixture for accurately positioning the distance between two holes, which can efficiently and accurately ensure the distance between two holes on a workpiece, improve processing accuracy and production efficiency, and reduce production costs, thereby solving the problems of insufficient positioning accuracy, cumbersome operation and low efficiency of traditional drilling fixtures mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A drilling fixture for precisely positioning the distance between two holes includes a fixture body. One end of the top surface of the fixture body protrudes upward to form a boss. The boss has a workpiece positioning hole that horizontally penetrates both end walls. A workpiece is inserted into the workpiece positioning hole. The top surface of the boss has a drill bit positioning hole that extends vertically to the workpiece positioning hole. The edge of the top surface of the boss has an upper positioning groove that extends vertically downward to the workpiece positioning hole. A first limiting pin is inserted into the upper positioning groove. The side wall of the boss has a limiting hole that extends laterally to the workpiece positioning hole. A second limiting pin is inserted into the limiting hole.

[0009] Preferably, the boss has a discharge groove that extends horizontally through both end walls, and the upper part of the discharge groove has an opening that communicates with the workpiece positioning hole.

[0010] Preferably, the bottom edge of the fixture body has a lower positioning groove that extends vertically upward to the discharge groove. The lower positioning groove is coaxial with the upper positioning groove. The first limiting pin passes through the upper positioning groove and the workpiece in sequence and is inserted into the lower positioning groove.

[0011] Preferably, the width of the upper positioning groove and the lower positioning groove is the same as the diameter of the first limiting pin.

[0012] Preferably, the bottom wall of the discharge trough is steeply sloped.

[0013] Preferably, protrusions are provided on the two opposite walls of the upper and lower positioning grooves, and the protrusions can elastically extend and retract back into the groove walls of the upper and lower positioning grooves.

[0014] Preferably, the end of the second limiting pin extends into the workpiece positioning hole.

[0015] Preferably, the length direction of the drill bit positioning hole is parallel to the length direction of the upper positioning groove, and is perpendicular to the length direction of the workpiece positioning hole.

[0016] Preferably, the drill bit positioning hole and the limiting hole are arranged in a cross shape.

[0017] Preferably, the bottom surface of the fixture body has a body fixing bolt hole.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: By cooperating with the workpiece positioning hole and the second limiting pin, and positioning the drill bit through the drill bit positioning hole, the workpiece and the drill bit can be reliably fixed during the drilling process, effectively reducing the displacement and vibration of the workpiece, improving the drilling accuracy, and reducing the workpiece scrap rate; by inserting the first limiting pin into the hole of the workpiece that has already been drilled, and pushing the workpiece towards the second limiting pin after the workpiece is placed into the workpiece positioning hole, the first limiting pin is engaged in the upper positioning groove. At this time, the distance between the drilled hole and the workpiece positioning hole is determined, thereby achieving precise positioning of the workpiece to be drilled, thus improving the processing accuracy and production efficiency, and reducing production costs. Attached Figure Description

[0019] Figure 1 This is a perspective view of a drilling fixture for precisely positioning the distance between two holes according to the present invention.

[0020] Figure 2 This is a front view of a drilling fixture for precisely positioning the distance between two holes according to the present invention.

[0021] Figure 3 This is a side cross-sectional view of a drilling fixture for precisely positioning the distance between two holes according to the present invention.

[0022] Figure 4 This is a perspective view of a drilling fixture for precisely positioning the distance between two holes, which is equipped with a workpiece.

[0023] The markings in the diagram correspond to: 1. Fixture body; 11. Body fixing bolt hole; 2. Boss; 21. Workpiece positioning hole; 22. Drill bit positioning hole; 23. Upper positioning groove; 24. First limit pin; 25. Limiting hole; 26. Second limit pin; 27. Discharge groove; 28. Lower positioning groove; 3. Machining part. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 A drilling fixture for precisely positioning the distance between two holes includes a fixture body 1, with a boss 2 extending upward from one end of the top surface of the fixture body 1. The boss 2 has workpiece positioning holes 21 that horizontally penetrate its two end walls, and a workpiece 3 is inserted into the workpiece positioning holes 21.

[0026] The top surface of the boss 2 has a drill bit positioning hole 22 extending vertically to the workpiece positioning hole 21. The edge of the top surface of the boss 2 has an upper positioning groove 23 extending vertically downwards to the workpiece positioning hole 21. A first limiting pin 24 is inserted into the upper positioning groove 23 for positioning the machining hole position of the workpiece 3. The side wall of the boss 2 has a limiting hole 25 extending laterally to the workpiece positioning hole 21. A second limiting pin 26 is inserted into the limiting hole 25, with its end extending into the workpiece positioning hole 21 for limiting the end of the workpiece 3.

[0027] In this embodiment, the length direction of the drill bit positioning hole 22 is parallel to the length direction of the upper positioning groove 23 and perpendicular to the length direction of the workpiece positioning hole 21; the drill bit positioning hole 22 and the limiting hole 25 form a cross structure; the workpiece positioning hole 21 is a round hole, but this utility model does not limit the shape of the workpiece positioning hole 21. The shape of the workpiece positioning hole 21 can also be a rectangular hole, a trapezoidal hole, or other geometric shapes.

[0028] By engaging the workpiece positioning hole 21 and the second limiting pin 26, and positioning the drill bit through the drill bit positioning hole 22, the workpiece 3 and the drill bit can be reliably fixed during drilling, effectively reducing the displacement and vibration of the workpiece 3, improving drilling accuracy, and reducing the workpiece scrap rate. By inserting the first limiting pin 24 into the hole of the workpiece 3 that has already been drilled, and after the workpiece 3 is placed into the workpiece positioning hole 21, the workpiece 3 is pushed towards the second limiting pin 26, so that the first limiting pin 24 is engaged in the upper positioning groove 23. At this time, the distance between the drilled hole and the distance between the two holes of the workpiece positioning hole 21 is determined, thereby achieving precise positioning of the drilling position of the workpiece 3, thereby improving processing accuracy and production efficiency, and reducing production costs.

[0029] The boss 2 has a horizontal discharge groove 27 extending through both end walls. The upper part of the discharge groove 27 has an opening that communicates with the workpiece positioning hole 21 for discharging drilling waste, improving operational convenience. The bottom wall of the discharge groove 27 is steeply sloped to facilitate the discharge of drilling waste and prevent it from accumulating inside the discharge groove 27 and affecting the drilling process. The width of the discharge groove 27 is greater than the width of the workpiece positioning hole 21, which helps to receive more drilling waste and reduces the frequency of cleaning the discharge groove 27.

[0030] Please refer to Figure 2 The discharge groove 27 is a rectangular hole, but the present invention does not limit the shape of the discharge groove 27. The shape of the discharge groove 27 can also be a round hole, a trapezoidal hole or other geometric shapes.

[0031] Please see Figure 1 or Figure 4 The jig body 1 has a lower positioning groove 28 extending vertically upward to the discharge groove 27 on its bottom edge. The lower positioning groove 28 is coaxially arranged with the upper positioning groove 23. The first limiting pin 24 passes through the upper positioning groove 23 and the workpiece 3 in sequence and is inserted into the lower positioning groove 28. The groove width of the upper positioning groove 23 and the lower positioning groove 28 is the same as the diameter of the first limiting pin 24. The upper positioning groove 23, the lower positioning groove 28 and the first limiting pin 24 are used to achieve precise positioning of the drilling part of the workpiece 3.

[0032] Furthermore, protrusions (not shown) are provided on the opposing walls of the upper positioning groove 23 and the lower positioning groove 28. These protrusions can elastically extend and retract back into the groove walls of the upper positioning groove 23 and the lower positioning groove 28. The protrusions are used to restrict the first limiting pin 24 from moving outward from the upper positioning groove 23 and the lower positioning groove 28, further improving the precise positioning between the two holes.

[0033] Please see Figure 3The bottom surface of the fixture body 1 is provided with a body fixing bolt hole 11. The fixture body 1 can be quickly positioned by the cooperation of the body fixing bolt hole 11 and the bolt, thereby improving the processing efficiency.

[0034] The working principle of this drilling fixture for precisely positioning the distance between two holes is as follows: Please refer to... Figure 1 and Figure 4 During drilling, one end of the workpiece 3 with a pre-drilled hole is rotated towards the workpiece positioning hole 21. Then, the end of the workpiece 3 to be drilled is inserted into the workpiece positioning hole 21. Next, the first limiting pin 24 is inserted into the pre-drilled hole of the workpiece 3. Then, the workpiece 3 is pushed towards the second limiting pin 26 until the first limiting pin 24 is engaged in the upper positioning groove 23 and the lower positioning groove 28. At this time, the position of the drill bit positioning hole 22 aligned with the machining position is the position to be drilled. At this time, the distance between the pre-drilled hole position of the workpiece 3 and the distance between the two holes of the workpiece positioning hole 21 is also determined, thereby achieving precise positioning of the position to be drilled on the workpiece 3. The operation is simple and efficient.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling fixture for precisely positioning the distance between two holes, comprising a fixture body (1), wherein a boss (2) is formed by an upward protrusion at one end of the top surface of the fixture body (1), characterized in that: The boss (2) has a workpiece positioning hole (21) that extends horizontally through both end walls. A workpiece (3) is inserted into the workpiece positioning hole (21). The top surface of the boss (2) has a drill bit positioning hole (22) that extends vertically to the workpiece positioning hole (21). The edge of the top surface of the boss (2) has an upper positioning groove (23) that extends vertically downward to the workpiece positioning hole (21). A first limiting pin (24) is inserted into the upper positioning groove (23). The side wall of the boss (2) has a limiting hole (25) that extends horizontally to the workpiece positioning hole (21). A second limiting pin (26) is inserted into the limiting hole (25).

2. The drilling fixture for precisely positioning the distance between two holes according to claim 1, characterized in that: The boss (2) has a discharge groove (27) that runs horizontally through both of its end walls. The upper part of the discharge groove (27) has an opening that communicates with the workpiece positioning hole (21).

3. The drilling fixture for precisely locating the distance between two holes according to claim 2, characterized in that: The bottom edge of the fixture body (1) is provided with a lower positioning groove (28) that extends vertically upward to the discharge groove (27). The lower positioning groove (28) is coaxially arranged with the upper positioning groove (23). The first limiting pin (24) passes through the upper positioning groove (23) and the workpiece (3) in sequence and is inserted into the lower positioning groove (28).

4. The drilling fixture for precisely positioning the distance between two holes according to claim 3, characterized in that: The width of the upper positioning groove (23) and the lower positioning groove (28) is the same as the diameter of the first limiting pin (24).

5. The drilling fixture for precisely locating the distance between two holes according to any one of claims 2-4, characterized in that: The bottom wall of the discharge trough (27) is steeply sloped.

6. The drilling fixture for precisely positioning the distance between two holes according to claim 3, characterized in that: The upper positioning groove (23) and the lower positioning groove (28) are provided with protrusions on their respective groove walls. The protrusions can elastically extend and retract back into the groove walls of the upper positioning groove (23) and the lower positioning groove (28).

7. The drilling fixture for precisely locating the distance between two holes according to claim 1, characterized in that: The end of the second limiting pin (26) extends into the workpiece positioning hole (21).

8. The drilling fixture for precisely positioning the distance between two holes according to claim 7, characterized in that: The length direction of the drill bit positioning hole (22) is parallel to the length direction of the upper positioning groove (23) and perpendicular to the length direction of the workpiece positioning hole (21).

9. The drilling fixture for precisely locating the distance between two holes according to claim 8, characterized in that: The drill bit positioning hole (22) and the limiting hole (25) are arranged in a cross shape.

10. The drilling fixture for precisely positioning the distance between two holes according to claim 1, characterized in that: The fixture body (1) has a body fixing bolt hole (11) on its bottom surface.

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