Positioning device for bolt drilling machining

Abstract

The utility model relates to a bolt drilling machining positioning device, and belongs to the technical field of fastener hole machining positioning. The positioning device comprises a positioning platform, a lower positioning block arranged on the positioning platform, an upper pressing plate and one or more positioning units, the upper pressing plate is arranged above the lower positioning block, and a positioning groove used for positioning the bolt to be machined is formed in the lower positioning block. A positioning space used for pressing a bolt to be machined is formed between the upper pressing plate and the lower positioning block. The positioning unit comprises a positioning rod, a rear positioning plate is further arranged on the positioning platform, the positioning rod is in threaded connection with the rear positioning plate, the bolt to be machined is placed in the positioning space, and the rod end of the bolt to be machined abuts against the rod end of the positioning rod. The bolt drilling fixture is simple in structure, convenient to clamp and operate, capable of clamping and positioning a plurality of products at one time, stable and reliable in positioning, accurate in positioning position and high in bolt drilling quality, and ensures the bolt drilling efficiency.

Description

Technical Field

[0001] The utility model relates to a bolt drilling processing and positioning device, belonging to the technical field of fastener hole processing and positioning. Background Art

[0002] Bolts are usually installed using threads when in use. In order to prevent the bolts from loosening due to factors such as vibration and temperature changes during use, sometimes a hole is drilled in the bolt head, that is, a safety hole is processed in the bolt head. The bolt and its components are fastened together by a safety wire passing through the hole to prevent the bolt from loosening. When the bolt and nut are installed, in order to prevent the bolt and nut from rotating relative to each other, a cotter pin hole is processed in the threaded area of ​​the bolt. The cotter pin and the cotter pin hole cooperate to ensure the connection reliability between the bolt and the nut. Therefore, when the bolt is in use, a safety hole or a cotter pin hole will be drilled in the bolt head or the threaded area of ​​the bolt according to the requirements of the use site.

[0003] Existing bolt drilling is usually performed on machine tools. Due to the relatively low positioning and repeatability accuracy of machine tools, the bolts do not have a good fulcrum and are difficult to clamp. During the drilling process, it is easy to encounter problems such as difficulty in ensuring the drilling size and accuracy, low processing efficiency, and even damage to the drill bit in severe cases. Existing bolt positioning relies on manual operation, which is easily limited by the operator's skill level and has poor stability. Summary of the Invention

[0004] The utility model aims to solve the deficiencies in the prior art and provides a device for machining and positioning a bolt head hole.

[0005] The utility model solves the above technical problems with the following technical solutions: A bolt drilling positioning device comprises a positioning platform, a lower positioning block arranged on the positioning platform, an upper pressing plate and one or more positioning units, wherein the upper pressing plate is arranged above the lower positioning block, the lower positioning block is provided with a positioning groove for positioning the bolt to be processed, and a positioning space for pressing the bolt to be processed is provided between the upper pressing plate and the lower positioning block;

[0006] The positioning unit includes a positioning rod, and a rear positioning plate is further provided on the positioning platform. The positioning rod is threadedly connected to the rear positioning plate. The bolt to be processed is placed in the positioning space, and the rod end of the bolt to be processed abuts against the rod end of the positioning rod.

[0007] The beneficial effects of the present invention are as follows: one or more positioning units can be provided according to actual needs, enabling multiple products to be clamped and positioned at once. The end position of the positioning rod can be adjusted according to bolt products of different lengths and specifications. During positioning, the bolt product to be processed is placed on the positioning groove, and the positioning position of the product is determined by the contact between the product and the end of the positioning rod. The workpiece is then pressed by the upper pressure plate, ensuring accurate and stable positioning of the product, allowing drilling of the positioned bolt product. The present invention has a simple structure, is easy to clamp and operate, provides reliable and accurate positioning, achieves high-quality bolt drilling, and also improves bolt drilling efficiency.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a front baffle is provided on the positioning platform, and the front baffle is used to limit the head of the bolt to be processed.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that the rod end of the product, i.e. the bolt to be processed, abuts against the positioning rod, and the head end abuts against the front baffle and is limited by the front baffle to realize the position positioning of the product. Afterwards, the product can be clamped by cooperating with the upper pressure plate and the lower positioning block. The product positioning is stable, and the drilling quality of the product is guaranteed.

[0011] Furthermore, the positioning unit further comprises a positioning screw sleeve, one end of which is used to position the rod end of the bolt to be processed, and the other end of which is threadedly connected to the positioning rod.

[0012] The beneficial effect of adopting the above further solution is that the positioning screw sleeve is threadedly connected to the positioning rod, and the thread engagement length thereof can be changed, so that products of more length specifications can be clamped without changing the length of the positioning rod.

[0013] Furthermore, it also includes a head support plate arranged on the positioning platform, and the head support plate is used to position the head of the bolt to be processed.

[0014] The beneficial effect of adopting the above further solution is that the head support plate can support the head of the product, so that the plane of the head of the bolt product can be positioned through the head support plate, and when drilling the head of the product, stable support for the product is achieved, ensuring the stability of the product head during drilling.

[0015] Furthermore, the positioning platform is provided with a support plate hole for accommodating the head support plate, the bottom of the head support plate is an inclined structure with a higher front and a lower back, and the positioning platform is provided with an adjustment screw, the head of the adjustment screw extends toward the support plate hole, and the head of the adjustment screw is a conical structure that can act on the inclined structure.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the adjusting screw is threadedly connected to the positioning platform, and rotating the adjusting screw can adjust the extension position of the conical structure of its head. The conical structure of the adjusting screw can contact the inclined structure of the head support plate. Rotating the adjusting screw can convert the axial movement of the adjusting screw into movement in the height direction of the head support plate, thereby realizing the adjustment of the height position of the head support plate, so that it can be suitable for bolt products of more specifications.

[0017] Furthermore, the head support plate is provided with a notch running through the top and bottom.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that if the hole of the product needs to be chamfered after drilling the hole in the head of the product, the upper hole can be chamfered directly, while the chamfering of the hole on the other side does not require re-clamping the product. It only requires the positioning platform to rotate 180 degrees under the action of the machine tool, and the hole on the other side can be chamfered directly through the slot position, thereby improving the hole processing efficiency.

[0019] Furthermore, the lower positioning block is arranged on the positioning platform through a connecting mechanism. Under the action of the connecting mechanism, the lower positioning block can move back and forth on the positioning platform.

[0020] The beneficial effect of adopting the above further solution is that, under the action of the connecting mechanism, the lower positioning block can move back and forth on the positioning platform, so that more bolt products of different lengths can be clamped.

[0021] Furthermore, the connecting mechanism includes a connecting screw and a screw fastener, the lower positioning block is provided with a screw mounting hole, the positioning platform is provided with a movable through hole, and the rod of the connecting screw passes through the screw mounting hole and the movable through hole and is threadedly connected to the screw fastener.

[0022] The beneficial effect of adopting the above-mentioned further scheme is that the screw fastener can be a nut or a fixed plate that can be threadedly connected to the connecting screw. When the lower positioning block needs to be adjusted, the connecting screw can be loosened, and then it can be moved in the front and back directions along the movable through hole. After the lower positioning block moves into place, the connecting screw can be locked, and the position of the lower positioning block is locked. Through this connecting mechanism, the lower positioning block can move in the front and back directions to meet the clamping and positioning of bolt products with different length specifications.

[0023] Furthermore, the upper pressing plate is connected to the lower positioning block or positioning platform through a connecting piece.

[0024] The beneficial effect of adopting the above further solution is that the upper pressing plate can be installed on the lower positioning block or on the positioning platform, as long as it can press the bolt product after it is placed in the positioning groove.

[0025] Furthermore, the connecting member is a pair of connecting bolts, and the connecting bolts are arranged on the lower positioning block or positioning platform, and the upper pressure plate is provided with a pair of slots adapted to the rods of the connecting bolts.

[0026] The beneficial effect of adopting the above-mentioned further scheme is that when the bolt product needs to be placed, one of the slots of the upper pressure plate is disengaged from the screw of the corresponding connecting bolt, and the axis of the other connecting bolt is used as the rotation fulcrum to rotate to avoid the placement of the product. After that, the bolt product to be processed can be placed on the corresponding positioning slot, and the product can be positioned by the positioning rod or positioning screw sleeve and the front baffle. Then, the upper pressure plate is rotated so that the disengaged slot is clamped on the corresponding screw. The clamping effect of the upper pressure plate can be further ensured by tightening the connecting bolt, so that the clamping positioning of the bolt product to be processed can be achieved, and then waiting for drilling can be done. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0029] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0030] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure along the BB direction;

[0031] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along CC direction;

[0032] Figure 6 This is a structural diagram of the lower positioning block of the utility model;

[0033] Figure 7 This is a structural diagram of the head support plate of the present invention;

[0034] In the figure, 1. positioning platform; 101. support plate hole; 102. movable through hole; 2. lower positioning block; 201. positioning groove; 3. upper pressure plate; 301. slot; 4. positioning rod; 5. rear positioning plate; 6. front baffle; 7. positioning screw sleeve; 8. head support plate; 801. inclined structure; 802. notch; 9. connecting screw; 10. screw fastener; 11. connecting bolt; 12. adjusting screw; 121. conical structure; 13. fixed seat plate; 14. product. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1-Figure 7 As shown, a bolt drilling positioning device includes a positioning platform 1, a lower positioning block 2 provided on the positioning platform 1, an upper pressing plate 3 and one or more positioning units, wherein the upper pressing plate 3 is provided above the lower positioning block 2, the lower positioning block 2 is provided with a positioning groove 201 for positioning the bolt to be processed, and a positioning space for pressing the bolt to be processed is provided between the upper pressing plate 3 and the lower positioning block 2;

[0037] The positioning unit includes a positioning rod 4. A rear positioning plate 5 is further provided on the positioning platform 1. The positioning rod 4 is threadedly connected to the rear positioning plate 5. The bolt to be processed is placed in the positioning space, and the rod end of the bolt to be processed abuts against the rod end of the positioning rod 4. The positioning groove 201 is a V-shaped groove.

[0038] The positioning platform 1 is also provided with a front baffle 6, which is used to limit the head of the bolt to be processed. The rod end of the product 14, i.e., the bolt to be processed, abuts the positioning rod 4, while the head end abuts the front baffle 6, which limits the position of the product 14. The upper pressure plate 3 and the lower positioning block 2 then cooperate to clamp the product 14, stably positioning the product 14 and ensuring the quality of the drilling of the product 14.

[0039] The positioning unit further includes a positioning nut 7, one end of which is used to position the rod end of the bolt to be processed, and the other end of which is threadedly connected to the positioning rod 4. The positioning nut 7 is threadedly connected to the positioning rod 4, and its thread engagement length can be changed. In this way, without changing the length of the positioning rod 4, products 14 of various length specifications can be clamped.

[0040] The head support plate 8 is also provided on the positioning platform 1 and is used to position the head of the bolt to be processed. The head support plate 8 can support the head of the product 14 so that the plane of the head of the bolt product 14 can be positioned by the head support plate 8. When the head of the product 14 is drilled, the head support plate 8 can provide stable support for the product 14 and ensure the stability of the head of the product 14 during drilling.

[0041] The positioning platform 1 is provided with a support plate hole 101 for accommodating the head support plate 8. The bottom of the head support plate 8 is a sloped structure 801 that is higher in the front and lower in the back. The positioning platform 1 is provided with an adjustment screw 12. The head of the adjustment screw 12 extends toward the support plate hole 101. The head of the adjustment screw 12 is a conical structure 121 that can act on the sloped structure 801. The adjustment screw 12 is threadedly connected to the positioning platform 1. Rotating the adjustment screw 12 can adjust the insertion position of the conical structure 121 of its head. The conical structure 121 of the adjustment screw 12 can contact the sloped structure 801 of the head support plate 8. Rotating the adjustment screw 12 can convert the axial movement of the adjustment screw 12 into the height movement of the head support plate 8, thereby achieving adjustment of the height position of the head support plate 8 so that it can be applied to bolt products 14 of more specifications.

[0042] The head support plate 8 is provided with a notch 802 extending vertically therethrough. After the head of the product 14 is drilled, if the hole needs to be chamfered, the upper hole can be directly chamfered, while the hole on the other side can be chamfered without re-clamping the product 14. The positioning platform 1 only needs to be rotated 180 degrees under the action of the machine tool, and the hole on the other side can be directly chamfered through the notch 802, thereby improving the hole processing efficiency.

[0043] The lower positioning block 2 is mounted on the positioning platform 1 via a connecting mechanism. The connecting mechanism allows the lower positioning block 2 to move forward and backward on the positioning platform 1. The connecting mechanism allows the lower positioning block 2 to move forward and backward on the positioning platform 1, allowing for the clamping of more bolt products 14 of different lengths.

[0044] The connecting mechanism includes a connecting screw 9 and a screw fastener 10. The lower positioning block 2 is provided with a screw mounting hole, and the positioning platform 1 is provided with a movable through hole 102. The rod of the connecting screw 9 passes through the screw mounting hole and the movable through hole 102 and is threadedly connected to the screw fastener 10. The screw fastener 10 can be a nut or a fixed plate that can be threadedly connected to the connecting screw 9. A fixed plate is used in the figure. When the lower positioning block 2 needs to be adjusted, the connecting screw 9 can be loosened, and then it can be moved in the front-to-back direction along the movable through hole 102. After the lower positioning block 2 is moved into place, the connecting screw 9 can be locked, and the position of the lower positioning block 2 is locked. Through this connecting mechanism, the lower positioning block 2 can move in the front-to-back direction to meet the clamping and positioning of bolt products 14 of different length specifications.

[0045] The upper pressing plate 3 is connected to the lower positioning block 2 or the positioning platform 1 through a connecting piece. The upper pressing plate 3 can be installed on the lower positioning block 2 or the positioning platform 1, as long as it can press the bolt product 14 after it is placed in the positioning groove 201.

[0046] The connecting parts are a pair of connecting bolts 11, which are arranged on the lower positioning block 2 or the positioning platform 1. The upper pressing plate 3 is provided with a pair of slots 301 that are compatible with the rods of the connecting bolts 11. When the bolt product 14 needs to be placed, one of the slots 301 of the upper pressing plate 3 is disengaged from the screw rod of the corresponding connecting bolt 11, and the axis of the other connecting bolt 11 is used as a rotation fulcrum to rotate to avoid the placement of the product 14. After that, the bolt product 14 to be processed can be placed on the corresponding positioning slot 201, and the product 14 is positioned by the positioning rod 4 or the positioning screw sleeve 7 and the front baffle 6. After that, the upper pressing plate 3 is rotated so that the disengaged slot 301 is clamped on the corresponding screw rod to achieve the clamping and positioning of the bolt product 14 to be processed, and then the drilling can be waited for.

[0047] The positioning platform 1 is mounted on a fixed seat plate 13, and mounting holes are provided on the fixed seat plate 13. The positioning device can be mounted on a machine tool frame through the mounting holes.

[0048] The present invention can be provided with one or more positioning units according to actual needs. Multiple positioning units form multiple positioning stations, which can realize the clamping and positioning of multiple bolt products 14 at one time. The position of the free end of the positioning screw sleeve 7 can be adjusted according to the bolt products 14 of different length specifications. The height of the head support plate 8 can be appropriately adjusted according to the size of the head of the bolt product 14 to be positioned. The position of the lower positioning block 2 can be adjusted according to the length of the bolt product 14 to be positioned to avoid the clamping position affecting the drilling position of the rod of the bolt product 14. The bolt product 14 to be processed is placed on the positioning groove 201 of the lower positioning block 2. The positioning position of the product 14 is determined by the contact between the product 14 and the rod end of the positioning screw sleeve 7 and the rear end face of the front baffle 6. The product 14 is positioned and clamped. Then the upper pressing plate 3 is rotated to press the workpiece. The positioning position of the product 14 is accurate and stable, and the positioned bolt product 14 can be drilled.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolt drilling and positioning device, characterized in that: The invention comprises a positioning platform (1), a lower positioning block (2) arranged on the positioning platform (1), an upper pressing plate (3) and one or more positioning units, wherein the upper pressing plate (3) is arranged above the lower positioning block (2), the lower positioning block (2) is provided with a positioning groove (201) for positioning the bolts to be processed, and a positioning space for pressing the bolts to be processed is provided between the upper pressing plate (3) and the lower positioning block (2); The positioning unit comprises a positioning rod (4), and a rear positioning plate (5) is further provided on the positioning platform (1). The positioning rod (4) is threadedly connected to the rear positioning plate (5), and the bolt to be processed is placed in the positioning space, and the rod end of the bolt to be processed abuts against the rod end of the positioning rod (4).

2. The bolt drilling and positioning device according to claim 1, characterized in that: A front baffle (6) is also provided on the positioning platform (1), and the front baffle (6) is used to limit the head of the bolt to be processed.

3. The bolt drilling and positioning device according to claim 2, characterized in that: The positioning unit further comprises a positioning screw sleeve (7), one end of which is used to position the rod end of the bolt to be processed, and the other end of which is threadedly connected to the positioning rod (4).

4. The bolt drilling and positioning device according to any one of claims 1 to 3, characterized in that: It also includes a head support plate (8) arranged on the positioning platform (1), and the head support plate (8) is used to position the head of the bolt to be processed.

5. The bolt drilling and positioning device according to claim 4, characterized in that: The positioning platform (1) is provided with a support plate hole (101) for accommodating the head support plate (8), the bottom of the head support plate (8) is a slope structure (801) that is higher in the front and lower in the back, and the positioning platform (1) is provided with an adjustment screw (12), the head of the adjustment screw (12) extends toward the support plate hole (101), and the head of the adjustment screw (12) is a conical structure (121) that can act on the slope structure (801).

6. The bolt drilling and positioning device according to claim 4, characterized in that: The head support plate (8) is provided with a notch (802) running through it from top to bottom.

7. The bolt drilling and positioning device according to any one of claims 1 to 3, characterized in that: The lower positioning block (2) is arranged on the positioning platform (1) via a connecting mechanism, and under the action of the connecting mechanism, the lower positioning block (2) can move forward and backward on the positioning platform (1).

8. The bolt drilling and positioning device according to claim 7, characterized in that: The connecting mechanism comprises a connecting screw (9) and a screw fastener (10); a screw mounting hole is provided on the lower positioning block (2); a movable through hole (102) is provided on the positioning platform (1); a rod of the connecting screw (9) passes through the screw mounting hole and the movable through hole (102) and is threadedly connected to the screw fastener (10).

9. The bolt drilling and positioning device according to any one of claims 1 to 3, characterized in that: The upper pressing plate (3) is connected to the lower positioning block (2) or the positioning platform (1) via a connecting piece.

10. The bolt drilling and positioning device according to claim 9, characterized in that: The connecting member is a pair of connecting bolts (11), and the connecting bolts (11) are arranged on the lower positioning block (2) or the positioning platform (1). The upper pressing plate (3) is provided with a pair of slots (301) adapted to the rods of the connecting bolts (11).

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