Drill jig

Abstract

The invention discloses a drill jig. The drill jig comprises a drilling die, a supporting assembly, a plurality of positioning blocks, a plurality of supporting blocks, one or more first clamping assemblies and a plurality of second clamping assemblies. The drill jig is accurate and stable in positioning and simple to operate.

Description

Technical Field

[0001] This invention relates to a drill jig. Background Technology

[0002] The fixture used for drilling holes on a drilling machine is called a drilling fixture, or conventionally, a drill jig. The dimensional accuracy of the machined hole is guaranteed by the accuracy of the cutting tool itself, while the positional accuracy is determined by the drilling mold in the drill jig. Drill jigs are beneficial for ensuring the dimensional and positional accuracy requirements of the machined hole relative to its positioning datum and between holes. Furthermore, by eliminating the scribing process, they can significantly improve labor productivity, making them one of the most commonly used toolings for batch drilling.

[0003] During the production of the hopper car, mounting holes need to be drilled on the bottom door and base frame, with a drilling accuracy requirement of within 0.5mm. The base frame structure of the bottom door is complex, requiring independent drilling. Therefore, a drilling jig is needed to ensure accurate and consistent positioning for drilling holes in the bottom door and base frame. Summary of the Invention

[0004] This invention provides a drill jig.

[0005] The technical solution of the present invention is as follows: A drill jig, comprising:

[0006] The drilling mold is flat and has drilling holes, with a drill sleeve fixed on the wall of the drilling holes;

[0007] A support assembly is fixed to the first side surface of the drilling mold, used for mechanical reinforcement of the drilling mold and for external equipment to lift and lower the drilling mold;

[0008] Multiple positioning blocks are fixed at intervals to the edge region of the second side surface of the drilling mold. Each positioning block includes an integrally formed first sub-block and a second sub-block. The second sub-block is located inside the first sub-block. The surface of the second sub-block facing away from the drilling mold is parallel to the drilling mold. The thickness of the first sub-block is greater than the thickness of the second sub-block to form a step at the junction of the two.

[0009] Multiple support blocks are fixed at intervals to the edge region of the second side surface of the drilling mold. Each support block includes an integrally formed third sub-block and a fourth sub-block. The fourth sub-block is located inside the third sub-block. The surface of the fourth sub-block facing away from the drilling mold is parallel to the drilling mold. The thickness of the fourth sub-block is equal to the thickness of the second sub-block. The thickness of the third sub-block is greater than the thickness of the fourth sub-block. The multiple support blocks are arranged in a one-to-one correspondence with the multiple positioning blocks. The direction in which the third sub-block points to the fourth sub-block in the support block is opposite to the direction in which the first sub-block points to the second block in the corresponding positioning block.

[0010] One or more first clamping assemblies, each first clamping assembly being disposed at the first sub-block of a positioning block, for fastening the workpiece to be processed along the vertical direction of the drilling mold;

[0011] Multiple second clamping components are provided in a one-to-one correspondence with the multiple support blocks. The second clamping components are fixed on the third sub-block of the corresponding support block and are used to press the workpiece being processed toward the opposite positioning block.

[0012] Optionally, the first clamping assembly includes: a flat washer, a nut, and a hook-shaped clamp. The hook-shaped clamp is U-shaped and rod-shaped. The section containing the first end of the U-shaped hook-shaped clamp passes sequentially through the first sub-block of the corresponding positioning block, the drilling mold, the flat washer, and the nut. The nut is threadedly connected to the hook-shaped clamp and is used to adjust the position of the hook-shaped clamp along the vertical direction of the drilling mold. The second end of the U-shaped hook-shaped clamp is located on the side of the corresponding positioning block opposite to the drilling mold and is opposite to the second sub-block of the corresponding positioning block.

[0013] Optionally, the second clamping assembly includes a clamping screw and a nut, the third sub-block has a groove on its side surface facing away from the drilling mold, the nut is fixed in the groove of the corresponding third sub-block, the clamping screw passes through the hollow area of ​​the nut and is threadedly connected to the nut, and one inner end of the clamping screw points to the space area of ​​the opposite positioning block facing away from the drilling mold.

[0014] Optionally, the second clamping assembly further includes: a foot block and a nylon plate, wherein the foot block is fitted onto one inner end of the tightening screw, and the nylon plate is fixed to the surface of the foot block facing away from the tightening screw.

[0015] Optionally, the drilling template is a rectangular plate, and the drilling template has a plurality of outwardly protruding first protrusions and a plurality of outwardly protruding second protrusions. The first protrusions are arranged opposite to each other in a one-to-one correspondence with the positioning blocks, and the second protrusions are arranged opposite to each other in a one-to-one correspondence with the support blocks.

[0016] Optionally, the length of the second protrusion is greater than the length of the first protrusion, and the length of the support block is greater than the length of the positioning block.

[0017] Optionally, the support assembly includes a square tube and a lifting lug, the square tube being fixed to the first side surface of the drilling mold, and the lifting lug being fixed to the square tube.

[0018] Optionally, the square tube is a plurality of tubes, divided into a plurality of first square tubes and a plurality of second square tubes. The first square tubes extend along the width direction of the drilling mold, and the second square tubes extend along the length direction of the drilling mold. The plurality of first square tubes and the plurality of second square tubes are welded together.

[0019] Optionally, multiple weight-reducing through holes are formed on the drilling mold.

[0020] Optionally, the square tube is a plurality of tubes, divided into a plurality of first square tubes and a plurality of second square tubes. The first square tubes extend along the width direction of the drilling mold, and the second square tubes extend along the length direction of the drilling mold. The plurality of first square tubes and the plurality of second square tubes are welded together. The weight-reducing through hole does not overlap with the first square tube, and the second square tube overlaps with a portion of the weight-reducing through hole.

[0021] The above-mentioned drill jigs can improve the accuracy of drilling positions and avoid positioning errors. The drill jigs themselves are easy to move and can be used to process the base frame, bottom door, or other workpieces separately. The positioning and fixing of the drill jigs can be achieved without complicated operations, thus improving positioning efficiency. Attached Figure Description

[0022] Figure 1 This is a front view of the structural schematic diagram of the drill jig of the present invention.

[0023] Figure 2 This is a top view of the structural schematic diagram of the drill jig of the present invention.

[0024] Figure 3 This is a front view of the drilling mold of the present invention.

[0025] Figure 4 This is a top view of the drilling mold and support assembly of the present invention in the connected state.

[0026] Figure 5 This is a front view of the drilling mold and support assembly of the present invention in the connected state.

[0027] Figure 6 This is a top view of the drilling mold, support block and positioning block of the present invention in the connected state.

[0028] Figure 7 This is a front view of the drilling mold, support block and positioning block of the present invention in the connected state.

[0029] Figure 8 yes Figure 6 Cross-sectional view along line AA.

[0030] Figure 9 This is a top view of the drilling mold, positioning block, support block, first clamping assembly, and second clamping assembly of the present invention in a connected state.

[0031] Figure 10 yes Figure 9 Cross-sectional view along line BB.

[0032] The reference numerals in the attached drawings are as follows: 1. Drilling mold; 2. Support assembly; 3. Positioning block; 4. Support block; 5. First clamping assembly; 6. Second clamping assembly; 11. Drill hole; 12. First protrusion; 13. Second protrusion; 14. Weight reduction through hole; 21. First square tube; 22. Second square tube; 23. Lifting lug; 31. First sub-block; 32. Second sub-block; 41. Third sub-block; 42. Fourth sub-block; 51. Flat washer; 52. Nut; 53. Hook-type clamp; 61. Tightening screw; 62. Nut; 63. Foot block; 64. Nylon plate. Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0034] refer to Figure 1 and Figure 2 The present invention provides a drilling jig, comprising: a drilling mold 1, a support component 2, multiple positioning blocks 3, multiple support blocks 4, multiple first clamping components 5, and multiple second clamping components 6.

[0035] refer to Figure 3 The drilling mold 1 is flat and has a drilling hole 11. A drill sleeve is fixed on the wall of the drilling hole 11.

[0036] The support assembly 2 is fixed on the first side surface of the drilling mold 1, and is used to mechanically reinforce the drilling mold 1 and to allow external equipment to lift and lower the drilling mold.

[0037] When in use, the drilling mold 1 is placed horizontally on the upper surface (the surface to be drilled) of the workpiece being processed, and the first side surface of the drilling mold 1 is the upper surface of the drilling mold 1.

[0038] refer to Figures 6 to 8 Multiple positioning blocks 3 are fixed at intervals on the edge area of ​​the second side surface of the drilling mold 1. The positioning block 3 includes an integrally formed first sub-block 31 and a second sub-block 32. The second sub-block 32 is located inside the first sub-block 31. The surface of the second sub-block 32 facing away from the drilling mold 1 is parallel to the drilling mold 1. The thickness of the first sub-block 31 is greater than the thickness of the second sub-block 32 to form a step at the junction of the two.

[0039] Continue to refer to Figures 6 to 8Multiple support blocks 4 are fixed at intervals on the edge area of ​​the second side surface of the drilling mold 1. Each support block 4 includes an integrally formed third sub-block 41 and a fourth sub-block 42. The fourth sub-block 42 is located inside the third sub-block 41. The surface of the fourth sub-block 42 facing away from the drilling mold 1 is parallel to the drilling mold 1. The thickness of the fourth sub-block 42 is equal to the thickness of the second sub-block 32. The thickness of the third sub-block 41 is greater than the thickness of the fourth sub-block 42. Multiple support blocks 4 are arranged in a one-to-one correspondence with multiple positioning blocks 3. The direction in which the third sub-block 41 points to the fourth sub-block 42 in the support block 4 is opposite to the direction in which the first sub-block 31 points to the second sub-block 32 in the corresponding positioning block 3.

[0040] refer to Figure 9 and Figure 10 Each first clamping component 5 is located at the first sub-block 31 of a positioning block 3, and is used to fasten the workpiece to be processed along the vertical direction of the drilling mold 1.

[0041] Continue to refer to Figure 9 and Figure 10 Multiple second clamping components 6 are arranged one-to-one with multiple support blocks 4. The second clamping components 6 are fixed on the third sub-block 41 of the corresponding support block 4 and are used to press the workpiece being processed toward the opposing positioning block 3. Specifically, the second clamping components 6 push the workpiece being processed along the area parallel to the drilling mold 1 and pointing to the area below the opposing positioning block 3.

[0042] The first sub-block 31 and the third sub-block 41 are thicker, making them more suitable for connection with other components.

[0043] refer to Figure 1 and Figure 2 The method of using this drill jig is as follows.

[0044] First, an external device (not shown) hooks onto the support assembly 2, and the drill jig is placed on the workpiece. The surface of the workpiece to be drilled is placed horizontally upwards, and the drill jig 1 is fitted against the surface to be drilled. The drill jig is in a relatively horizontal state to avoid drilling size deviations due to height errors. The lower surface of the second sub-block 32 of the positioning block 3 and the lower surface of the fourth sub-block 42 of the support block 4 press against the surface of the workpiece to be drilled.

[0045] The second step involves adjusting the drill jig position. The second clamping assembly 6 clamps the end face or side of the workpiece in the opposite direction along the horizontal direction to prevent the drill jig from shifting horizontally. The workpiece rests against the stepped vertical surface of the positioning block 3. Because the second clamping assembly 6 can move horizontally, the drill jig can adapt to irregular shapes.

[0046] Third, the first clamping assembly 5 applies a force toward the drilling mold 1 to the opposite side of the surface to be drilled on the workpiece, that is, it squeezes the workpiece and the positioning block 3 in the vertical direction to prevent the drilling mold from shaking vertically.

[0047] The fourth step is to drill the initial mounting hole in the workpiece through the drill bushing on the drilling mold 1.

[0048] The above-mentioned drill jigs can improve the accuracy of drilling positions and avoid positioning errors. The drill jigs themselves are easy to move and can be used to process the base frame, bottom door, or other workpieces separately. The positioning and fixing of the drill jigs can be achieved without complicated operations, thus improving positioning efficiency.

[0049] Some embodiments of the present invention are particularly suitable for drilling holes in the bottom door and the base frame of an aluminum alloy funnel car, respectively.

[0050] It should be noted that the number of first clamping components 5 may be less than the number of positioning blocks 3. In extreme cases, the number of first clamping components 5 may be one. Preferably, the first clamping components 5 are provided at least on the long side of the drilling mold 1.

[0051] Optionally, refer to Figure 9 and Figure 10 The first clamping assembly 5 includes a flat washer 51, a nut 52, and a hook-shaped clamp 53. The hook-shaped clamp 53 is U-shaped. The section where the first end of the U-shaped hook-shaped clamp 53 is located passes through the first sub-block 31 of the corresponding positioning block 3, the drilling mold 1, the flat washer 51, and the nut 52 in sequence. The nut 52 is threadedly connected to the hook-shaped clamp 53 and is used to adjust the position of the hook-shaped clamp 53 along the vertical direction of the drilling mold 1. The second end of the U-shaped hook-shaped clamp 53 is located on the side of the corresponding positioning block 3 facing away from the drilling mold 1 and is opposite to the second sub-block 32 of the corresponding positioning block 3.

[0052] In use, the vertical position of the hook clamp 53 is adjusted by rotating the nut 52, and the second end of the hook clamp 53 is used. Figure 10 The right free end of the hook-shaped angle is pressed against the opposite side of the surface to be drilled on the workpiece.

[0053] Optionally, refer to Figure 9 and Figure 10 The second clamping assembly 6 includes a clamping screw 61 and a screw nut 62. The third sub-block 41 has a groove on its side surface facing away from the drilling mold 1. The screw nut 62 is fixed in the groove of the corresponding third sub-block 41. The clamping screw 61 passes through the hollow area of ​​the screw nut 62 and is threadedly connected to the screw nut 62. One end of the clamping screw 61 points to the space area of ​​the opposite positioning block 3 facing away from the drilling mold 1.

[0054] In use, rotate the tightening screw 61, and the inner end of the tightening screw 61 will be tightened towards the opposite positioning block 3.

[0055] Optionally, the second clamping assembly 6 further includes a foot block 63 and a nylon plate 64, wherein the foot block 63 is fitted onto one end of the inner side of the tightening screw 61, and the nylon plate 64 is fixed to the side surface of the foot block 63 facing away from the tightening screw 61.

[0056] This design avoids damage to the end face or side of the workpiece being processed.

[0057] Optionally, refer to Figure 3 and Figure 6 The drilling mold 1 is a rectangular plate, and it has multiple outwardly protruding first protrusions 12 and multiple outwardly protruding second protrusions 13. The first protrusions 12 are arranged opposite to each other in a one-to-one correspondence with the positioning blocks 3, and the second protrusions 13 are arranged opposite to each other in a one-to-one correspondence with the support blocks 4. This design can minimize the size of the drilling mold 1.

[0058] Optionally, the length of the second protrusion 13 is greater than the length of the first protrusion 12, and the length of the support block 4 is greater than the length of the positioning block 3.

[0059] The second protrusion 13 corresponds to the support block 4 and the second clamping assembly 6, thus providing the second clamping assembly 6 with greater horizontal movement space.

[0060] Optionally, refer to Figure 4 and Figure 5 The support component 2 includes a square tube and a lifting lug 23. The square tube is fixed to the first side surface of the drilling mold 1, and the lifting lug 23 is fixed to the square tube.

[0061] Optionally, the square tube is made of multiple tubes, which are divided into multiple first square tubes 21 and multiple second square tubes 22. The first square tubes 21 extend along the width direction of the drilling mold 1, and the second square tubes 22 extend along the length direction of the drilling mold 1. The multiple first square tubes 21 and multiple second square tubes 22 are welded together.

[0062] Figure 4 The image shows three first square tubes 21 and two second square tubes 22.

[0063] Further integration Figure 3 and Figure 4 Multiple weight-reducing through holes 14 are formed on the drilling mold 1. In this embodiment, four weight-reducing through holes 14 are formed on the drilling mold 1.

[0064] This reduces the overall weight of the drill jig and ensures its mechanical stability.

[0065] Furthermore, combined with Figure 3 and Figure 4 The weight-reducing through hole 14 does not overlap with the first square tube 21, while the second square tube 22 overlaps with part of the weight-reducing through hole 14.

[0066] All of these designs aim to reduce the weight of the drill jig while ensuring its mechanical strength.

[0067] The various embodiments in this invention are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0068] The scope of protection of this invention is not limited to the embodiments described above. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its scope and spirit. If these modifications and variations fall within the scope of the claims of this invention and their equivalents, then the intent of this invention also includes these modifications and variations.

Claims

1. A drill jig, characterized in that, include: The drilling mold is flat and has drilling holes, with a drill sleeve fixed on the wall of the drilling holes; A support assembly is fixed to the first side surface of the drilling mold, used for mechanical reinforcement of the drilling mold and for external equipment to lift and lower the drilling mold; Multiple positioning blocks are fixed at intervals to the edge region of the second side surface of the drilling mold. Each positioning block includes an integrally formed first sub-block and a second sub-block. The second sub-block is located inside the first sub-block. The surface of the second sub-block facing away from the drilling mold is parallel to the drilling mold. The thickness of the first sub-block is greater than the thickness of the second sub-block to form a step at the junction of the two. Multiple support blocks are fixed at intervals to the edge region of the second side surface of the drilling mold. Each support block includes an integrally formed third sub-block and a fourth sub-block. The fourth sub-block is located inside the third sub-block. The surface of the fourth sub-block facing away from the drilling mold is parallel to the drilling mold. The thickness of the fourth sub-block is equal to the thickness of the second sub-block. The thickness of the third sub-block is greater than the thickness of the fourth sub-block. The multiple support blocks are arranged in a one-to-one correspondence with the multiple positioning blocks. The direction in which the third sub-block points to the fourth sub-block in the support block is opposite to the direction in which the first sub-block points to the second block in the corresponding positioning block. One or more first clamping assemblies, each first clamping assembly being disposed at the first sub-block of a positioning block, for fastening the workpiece to be processed along the vertical direction of the drilling mold; Multiple second clamping components are provided in a one-to-one correspondence with the multiple support blocks. The second clamping components are fixed on the third sub-block of the corresponding support block and are used to press the workpiece being processed toward the opposite positioning block.

2. The drill jig according to claim 1, characterized in that, The first clamping assembly includes a flat washer, a nut, and a hook-shaped clamp. The hook-shaped clamp is U-shaped and rod-shaped. The section containing the first end of the U-shaped hook-shaped clamp passes sequentially through the first sub-block of the corresponding positioning block, the drilling mold, the flat washer, and the nut. The nut is threadedly connected to the hook-shaped clamp and is used to adjust the position of the hook-shaped clamp along the vertical direction of the drilling mold. The second end of the U-shaped hook-shaped clamp is located on the side of the corresponding positioning block opposite to the drilling mold and is opposite to the second sub-block of the corresponding positioning block.

3. The drill jig according to claim 1, characterized in that, The second clamping assembly includes a clamping screw and a screw nut. The third sub-block has a groove on its side surface facing away from the drilling mold. The screw nut is fixed in the groove of the corresponding third sub-block. The clamping screw passes through the hollow area of ​​the screw nut and is threadedly connected to the screw nut. One inner end of the clamping screw points to the space area of ​​the opposite positioning block facing away from the drilling mold.

4. The drill jig according to claim 3, characterized in that, The second clamping assembly further includes a foot block and a nylon plate, wherein the foot block is fitted onto one inner end of the tightening screw, and the nylon plate is fixed to the surface of the foot block facing away from the tightening screw.

5. The drill jig according to claim 1, characterized in that, The drilling template is a rectangular plate, and the drilling template has a plurality of first protrusions and a plurality of second protrusions protruding outward. The first protrusions are arranged opposite to each other in a one-to-one correspondence with the positioning blocks, and the second protrusions are arranged opposite to each other in a one-to-one correspondence with the support blocks.

6. The drill jig according to claim 5, characterized in that, The length of the second protrusion is greater than the length of the first protrusion, and the length of the support block is greater than the length of the positioning block.

7. The drill jig according to claim 1, characterized in that, The support assembly includes a square tube and a lifting lug. The square tube is fixed to the first side surface of the drilling mold, and the lifting lug is fixed to the square tube.

8. The drill jig according to claim 7, characterized in that, The square tube is composed of multiple tubes, divided into multiple first square tubes and multiple second square tubes. The first square tubes extend along the width direction of the drilling mold, and the second square tubes extend along the length direction of the drilling mold. The multiple first square tubes and the multiple second square tubes are welded together as one unit.

9. The drill jig according to claim 7, characterized in that, Multiple weight-reducing through holes are made on the drilling mold.

10. The drill jig according to claim 9, characterized in that, The square tube consists of multiple tubes, divided into multiple first square tubes and multiple second square tubes. The first square tubes extend along the width direction of the drilling mold, and the second square tubes extend along the length direction of the drilling mold. The multiple first square tubes and the multiple second square tubes are welded together. The weight-reducing through-holes do not overlap with the first square tubes, while the second square tubes overlap with some of the weight-reducing through-holes.

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