Openings positioning device

Abstract

The application discloses a hole positioning device, which comprises a first scale and a second scale which are cross-stacked and provided with long holes, and the first scale and the second scale are locked by bolts and nuts to be adjustable in angle; a sliding part provided with a positioning hole is arranged in the long hole of the first scale; and the ends of the two scales are respectively provided with a first positioning part and a second positioning part which can abut against the edges of a workpiece. The hole reference position and angle are quickly adjusted and fixed by using the cross-locking structure of the slidable scales. The overall positioning is realized by directly abutting the positioning parts against the adjacent edges of the workpiece, repeated measurement is avoided, the workpiece can be directly marked or drilled through the first positioning hole, and the hole precision and efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of machining fixtures, and in particular to a hole positioning device. Background Technology

[0002] With the increasing prevalence of industrial automation, manufacturing enterprises are facing increasingly stringent requirements for product consistency, while labor costs continue to rise. How to reduce labor input and improve production efficiency has become a core issue in factory operations. In the refrigeration, HVAC, and similar industries, during the assembly of complete systems, the welding of refrigeration pipes and the assembly of water system components must be completed based on the relative positions of key components in the refrigeration and water systems. Among these, the water tank, as a crucial component of the water system, must have several mounting holes pre-drilled before production begins.

[0003] Currently, this pre-processing step is generally completed manually by workers using drawings, measuring tapes, or simple positioning templates. Due to human factors, the hole positions of water tanks in the same batch often show millimeter-level deviations. In addition, the average cycle time for manual measurement, marking, and positioning is measured in minutes, which seriously slows down the overall production line output and results in low efficiency. Utility Model Content

[0004] This application proposes a hole positioning device that can be used for rapid positioning and drilling of holes to be drilled on sheet metal, thereby improving hole drilling efficiency.

[0005] This application proposes an opening positioning device, comprising:

[0006] The first scale has a first elongated hole along its own length.

[0007] The second scale ruler has a second elongated hole along its own length direction, and the second scale ruler is stacked crosswise with the first scale ruler;

[0008] A bolt is provided at the intersection of the first scale and the second scale, and passes through the first elongated hole and the second elongated hole;

[0009] A nut, which cooperates with the bolt, is used to fasten the first scale and the second scale, so that the first scale and the second scale are kept at a set angle.

[0010] A first sliding member is slidably disposed in the first elongated hole, and the sliding direction is along the length direction of the first elongated hole. The first sliding member is also provided with a first positioning hole.

[0011] The first positioning element is located at the end of the first scale and is used to abut against one edge of the workpiece to position the first scale.

[0012] The second positioning element is located at the end of the second scale and is used to abut against the other edge of the workpiece to position the second scale.

[0013] In some embodiments, the hole positioning device further includes a second sliding member, which is slidably disposed in the second elongated hole and the sliding direction is along the length direction of the second elongated hole. The second sliding member is also provided with a second positioning hole.

[0014] In some embodiments, the first positioning member is rotatably connected to the end of the first scale, and the rotation center is along the length direction of the first positioning member; the first positioning member is rotatably provided at both ends of the first scale.

[0015] In some embodiments, the second positioning member is rotatably connected to the end of the second scale, and the rotation center is along the length direction of the second positioning member; the second positioning member is rotatably provided at both ends of the second scale.

[0016] In some embodiments, the first positioning member and the second positioning member are further provided with a level.

[0017] In some embodiments, the hole positioning device further includes a washer disposed on the bolt, and one side surface of the washer is provided with an angle scale along the circumference, the angle scale being used to measure the included angle between the first scale and the second scale.

[0018] In some embodiments, the surfaces of the first and second scales with length markings are arranged facing upwards, and the downward-facing side of the first scale is provided with a first recess, which corresponds to the first elongated hole. The first recess is used to accommodate a bolt head or nut.

[0019] In some embodiments, a second recess is provided on the downward side of the second scale, the second recess corresponding to the second elongated hole, and the second recess is used to accommodate a bolt head or nut.

[0020] In some embodiments, the side of the first scale is further provided with a third elongated hole, the third elongated hole being arranged along the length direction of the first scale and penetrating the inner wall of the first elongated hole. The hole positioning device further includes a first screw passing through the third elongated hole and connected to the first sliding member, the first screw being used to fix the first sliding member.

[0021] In some embodiments, the side of the second scale is further provided with a fourth elongated hole, the fourth elongated hole being arranged along the length direction of the second scale and penetrating the inner wall of the second elongated hole. The hole positioning device further includes a second screw passing through the fourth elongated hole and connected to the second sliding member, the second screw being used to fix the second sliding member.

[0022] The hole-opening positioning device in this embodiment includes two overlapping, cross-shaped, first and second scales with elongated holes, which are locked together by bolts and nuts to an adjustable angle. A sliding element with a positioning hole is provided inside the elongated hole of the first scale, and first and second positioning elements that can abut against the edge of the workpiece are respectively installed at the ends of the two scales. Utilizing the sliding scales and the cross-locking structure, the hole-opening reference position and angle can be quickly adjusted and fixed. The positioning elements directly abut against the adjacent edges of the workpiece to achieve overall positioning, avoiding repeated measurements. The device can directly pass through the first positioning hole to mark on the workpiece or directly drill, improving hole-opening accuracy and efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the opening positioning device in one embodiment of this application;

[0024] Figure 2 This is a partial schematic diagram of the hole positioning device in one embodiment of this application;

[0025] Figure 3 This is a partial schematic diagram of the perforated positioning device in another embodiment of this application.

[0026] Label Explanation:

[0027] 10. First scale; 11. First elongated hole; 12. First positioning component; 13. Level; 20. Second scale; 21. Second elongated hole; 22. Second positioning component; 23. Second sliding component; 24. Second positioning hole; 31. Bolt; 32. Bolt head; 33. Washer; 34. Washer ring.

[0028] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0030] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0031] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0032] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0033] This application proposes an opening positioning device. (Refer to...) Figures 1 to 3 The hole positioning device includes: a first scale 10 with a first elongated hole 11 along its length; a second scale 20 with a second elongated hole 21 along its length, the second scale 20 and the first scale 10 being stacked crosswise; a bolt 31 located at the intersection of the first scale 10 and the second scale 20, and passing through the first elongated hole 11 and the second elongated hole 21; a nut cooperating with the bolt 31 to fasten the first scale 10 and the second scale 20, keeping the first scale 10 and the second scale 20 at a set angle; a first sliding member slidably disposed in the first elongated hole 11, with the sliding direction along the length direction of the first elongated hole 11, and the first sliding member also having a first positioning hole; a first positioning member 12 located at the end of the first scale 10, used to abut against one edge of the workpiece to position the first scale 10; and a second positioning member 22 located at the end of the second scale 20, used to abut against the other edge of the workpiece to position the second scale 20.

[0034] In this embodiment, both the first elongated hole 11 and the second elongated hole 21 are through rectangular grooves, with a groove width slightly larger than the diameter of the bolt 31's smooth rod by 0.1-0.2 mm, ensuring both sliding and eliminating wobbling. The first sliding member is a T-shaped sliding member, with its two wings forming a dovetail joint with the sidewall of the first elongated hole 11. The first positioning hole is a φ4 mm through hole with a 30° chamfer at the opening to facilitate drill bit insertion. Using the polar coordinate system formed by the intersection of the two scales: the intersection point is the origin O, the first scale 10 is the polar axis, and the second scale 20 is the angle scale. The position of the first sliding member is the polar diameter r, and the angle between the second scale 20 and the first scale 10 is the polar angle θ, thus uniquely determining the hole position (r, θ). When the first scale 10 and the second scale 20 are adjusted to 90° and locked, they can be considered as the X-axis and Y-axis. For a square workpiece, the hole position can be determined by directly reading the (X, Y) coordinates using its two adjacent sides as a reference. Multi-hole positioning can be completed in one go without scribing on the workpiece, with a positioning error of ≤±0.3mm, improving efficiency by 4-5 times; for square workpieces, it can be converted to a rectangular coordinate system, eliminating the conversion step and further shortening the hole position setting time.

[0035] In this embodiment, the hole-opening positioning device includes two overlapping scales, a first scale 10 and a second scale 20, each with an elongated hole. These scales are locked together with bolts 31 and nuts to an adjustable angle. A sliding element with a positioning hole is provided within the elongated hole of the first scale 10. The ends of the two scales are respectively equipped with a first positioning element 12 and a second positioning element 22 that can abut against the edge of the workpiece. Utilizing the sliding scales and the cross-locking structure, the hole-opening reference position and angle can be quickly adjusted and fixed. The positioning elements directly abut against the adjacent edges of the workpiece to achieve overall positioning, avoiding repeated measurements. They can directly pass through the first positioning hole to mark the workpiece or directly drill, improving hole-opening accuracy and efficiency.

[0036] In some embodiments, the hole positioning device further includes a second sliding member 23, which is slidably disposed in the second elongated hole 21, and the sliding direction is along the length direction of the second elongated hole 21. The second sliding member 23 is also provided with a second positioning hole 24. The second sliding member 23 is symmetrical to the first sliding member in structure, also adopting a T-shaped dovetail structure. A brass bushing is embedded in the second positioning hole 24, with an inner diameter of φ4mm and an end face of the bushing 0.5mm higher than the surface of the sliding member, to prevent the drill bit from wearing the sliding member body. Two points determine a line: the first positioning hole and the second positioning hole 24 can lock a diagonal line for machining diagonal holes or oblique rows of holes. In the XY coordinate system, the two sliding members correspond to the X and Y values ​​respectively, allowing direct acquisition of the center distances ΔX and ΔY between the two holes, achieving rapid positioning of batch hole arrays.

[0037] In some embodiments, the first positioning member 12 is rotatably connected to the end of the first scale 10, and the rotation center is along the length direction of the first positioning member 12; the first positioning member 12 is rotatably provided at both ends of the first scale 10. The rotatable connection adopts a miniature ball bearing with an outer diameter of φ6mm, which is embedded in the blind hole at the end of the first scale 10; one end of the first positioning member 12 is provided with a φ3mm limiting pin, which is connected to the inner ring of the bearing, allowing for 180° rotation. When working in an XY coordinate system, the two positioning members respectively conform to the X and Y reference edges of the workpiece, ensuring that the zero position of the scale coincides with the zero position of the workpiece, eliminating systematic errors. The positioning accuracy is not affected by the chamfer or burr of the workpiece, and "zero reference" quick alignment can be achieved for square workpieces, shortening the clamping time.

[0038] In some embodiments, the second positioning member 22 is rotatably connected to the end of the second scale 20, and the center of rotation is along the length direction of the second positioning member 22; the second positioning member 22 is rotatably provided at both ends of the second scale 20. The mounting structure of the second positioning member 22 is similar to that of the first positioning member 12, and it is also rotatably connected to the end of the second scale 20 via a bearing. In the XY coordinate system, the second positioning member 22 is positioned along the Y-axis direction, forming an orthogonal reference with the first positioning member 12, ensuring that the coordinate axes are strictly perpendicular.

[0039] In some embodiments, a level 13 is also provided on the first positioning member 12 and the second positioning member 22. The level 13 is an 8mm diameter cylindrical bubble tube, embedded in a semi-circular groove milled on the upper surface of the positioning member and fixed with epoxy resin; the bubble tube sensitivity is 0.5mm / m. Using a gravity-based horizontal reference, the level is monitored in real time to check if the scale is tilted, thereby eliminating systematic errors caused by uneven workpiece surfaces. In the XY coordinate system, the level 13 simultaneously ensures that the X and Y axes are on the same horizontal plane, avoiding hole position deviations caused by height differences in the Z direction. The drilling perpendicularity is improved from ±2° to ±0.5°, reducing subsequent reaming or deburring processes; for large square plates, it avoids cumulative errors caused by plate warping.

[0040] In some embodiments, the hole positioning device further includes a washer 33 disposed on the bolt 31. One side surface of the washer 33 is provided with an angle scale along the circumference, which is used to measure the included angle between the first scale 10 and the second scale 20. The washer 33 is a stainless steel disc with an outer diameter of 20 mm and a thickness of 1 mm. The surface is laser-engraved with scale lines from 0° to 180°, with a minimum division of 1°. The scale line depth is 0.05 mm, filled with white paint to prevent glare. The angle measurement is integrated into the locking surface, and the scale rotates together with the bolt 31, realizing the synchronous completion of "locking-reading". When switching to the dual mode of polar coordinates and rectangular coordinates, the coordinate system switching can be completed instantly by simply adjusting the reading of the washer 33 to 90° without recalibration. The protractor is eliminated, the angle setting time is shortened, and the reading error is ≤ ±0.5°. For square workpieces, 90° can be locked with one click, and the XY coordinate mode can be directly activated.

[0041] Of course, a lubricating washer 34 can also be provided on the bolt 31. The lubricating washer 34 is clamped between the first scale 10 and the second scale 20. Specifically, a Teflon washer can be used to reduce the wear between the first scale 10 and the second scale 20.

[0042] In some embodiments, the surfaces of the first scale 10 and the second scale 20 with length graduations are arranged facing upwards. A first recess is provided on the downward-facing side of the first scale 10, corresponding to the first elongated hole 11. The first recess is used to accommodate the bolt head 32 or the nut. The first recess is a rectangular stepped groove with a depth of 3mm, and its length and width are each 0.3mm larger than the outer contour of the bolt head 32 / nut. The bottom of the groove is precision-milled by CNC with a surface roughness Ra of 1.6μm to ensure no interference after the bolt head 32 is recessed. The recess keeps the bolt head 32 / nut below the bottom surface of the scale, preventing the bolt 31 from protruding and causing misalignment between the device and the workpiece surface. In XY coordinate mode, the recess ensures that the bottom surface of the scale is completely in contact with the workpiece, ensuring that the X and Y readings are the true coordinate values. The positioning surface is completely in contact with the workpiece, eliminating the 2°–3° tilt error caused by the protrusion of the bolt 31; stable positioning is still possible even for square thin plates (≤3mm).

[0043] In some embodiments, a second recess is provided on the downward-facing side of the second scale 20, corresponding to the second elongated hole 21. The second recess is used to accommodate the bolt head 32 or the nut. In this embodiment, when the second scale 20 is located below the first scale 10, the lower side of the second scale 20 is in contact with the workpiece, preventing the bolt 31 from protruding and causing the device to not fit properly with the workpiece surface. In XY coordinate mode, the recess ensures that the bottom surface of the scale is completely in contact with the workpiece, ensuring that the X and Y readings are the true coordinate values. The positioning surface is completely in contact with the workpiece, eliminating the 2°-3° tilt error caused by the protrusion of the bolt 31; stable positioning is still possible even for square thin plates (≤3mm).

[0044] In some embodiments, the side of the first scale 10 is further provided with a third elongated hole, which is set along the length direction of the first scale 10 and penetrates the inner wall of the first elongated hole 11. The hole positioning device also includes a first screw passing through the third elongated hole and connected to the first sliding member. The first screw is used to fix the first sliding member. The third elongated hole is a 1.5mm×6mm rectangular through slot; the end of the first screw is provided with an internal hexagon, and after tightening, the side of the screw head abuts against the side of the first scale 10; the first sliding member corresponds to a threaded hole M3 with a depth of 5mm. The first screw generates friction through lateral pressing, locking the sliding member at any position in the elongated hole to achieve "stepless positioning". In the XY coordinate system, after the first screw is locked, the X coordinate of the first sliding member is locked, ensuring the X-axis consistency of the batch hole array. The locking force ≥50N can prevent the sliding member from moving slightly during drilling, improving the hole spacing accuracy; for square workpieces, the X coordinate of the entire row of holes can be locked with one key, without the need for adjustment of each hole individually.

[0045] In some embodiments, the side of the second scale 20 is further provided with a fourth elongated hole, which is arranged along the length direction of the second scale 20 and penetrates the inner wall of the second elongated hole 21. The hole positioning device also includes a second screw passing through the fourth elongated hole and connected to the second sliding member 23. The second screw is used to fix the second sliding member 23. The parameters of the fourth elongated hole are the same as those of the third elongated hole; the second screw is interchangeable with the first screw for easy spare parts management; the second sliding member 23 is also provided with an M3 threaded hole. In the XY coordinate system, the second screw is used to lock the Y coordinate of the second sliding member 23 so that drilling can be performed at the corresponding position.

[0046] It is worth noting that multiple first sliding members can be provided on the first scale 10. Locking each first sliding member allows for drilling of holes along the X-axis direction on the workpiece. Similarly, multiple second sliding members 23 can be provided on the second scale 20. Locking each second sliding member 23 allows for drilling of holes along the Y-axis direction on the workpiece. In this embodiment, the working principle of the hole-opening positioning device is as follows: The hole-opening positioning device includes two overlapping first and second scales with elongated holes, locked at an adjustable angle by bolts and nuts; a sliding member with a positioning hole is provided in the elongated hole of the first scale, and first and second positioning members that can abut against the edge of the workpiece are respectively installed at the ends of the two scales. Using the sliding scales and the cross-locking structure, the hole-opening reference position and angle can be quickly adjusted and fixed; the positioning members directly abut against the adjacent edge of the workpiece to achieve overall positioning, avoiding repeated measurements. The holes can be directly passed through the first positioning hole for marking on the workpiece or directly drilled, improving hole-opening accuracy and efficiency.

[0047] The above are only some or preferred embodiments of this application. Neither the text nor the drawings can limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the same overall concept as this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A hole positioning device, characterized in that, include: The first scale has a first elongated hole along its own length. The second scale ruler has a second elongated hole along its own length direction, and the second scale ruler is stacked crosswise with the first scale ruler; A bolt is provided at the intersection of the first scale and the second scale, and passes through the first elongated hole and the second elongated hole; A nut, which cooperates with the bolt, is used to fasten the first scale and the second scale, so that the first scale and the second scale are kept at a set angle. A first sliding member is slidably disposed in the first elongated hole, and the sliding direction is along the length direction of the first elongated hole. The first sliding member is also provided with a first positioning hole. The first positioning element is located at the end of the first scale and is used to abut against one edge of the workpiece to position the first scale. The second positioning element is located at the end of the second scale and is used to abut against the other edge of the workpiece to position the second scale.

2. The hole positioning device according to claim 1, characterized in that, The hole positioning device further includes a second sliding member, which is slidably disposed in the second elongated hole, and the sliding direction is along the length direction of the second elongated hole. The second sliding member is also provided with a second positioning hole.

3. The hole positioning device according to claim 2, characterized in that, The first positioning element is rotatably connected to the end of the first scale, and the rotation center is along the length direction of the first positioning element; the first positioning element is rotatably provided at both ends of the first scale.

4. The hole positioning device according to claim 3, characterized in that, The second positioning element is rotatably connected to the end of the second scale, and the rotation center is along the length direction of the second positioning element; the second positioning element is rotatably provided at both ends of the second scale.

5. The hole positioning device according to claim 4, characterized in that, The first and second positioning components are also equipped with a level.

6. The hole positioning device according to claim 4, characterized in that, The hole positioning device also includes a washer disposed on the bolt. One side surface of the washer is provided with an angle scale along the circumference. The angle scale is used to measure the included angle between the first scale and the second scale.

7. The hole positioning device according to claim 6, characterized in that, The first and second scales have their length markings facing upwards. The first scale has a first recessed groove on its downward-facing side, which corresponds to the first elongated hole. The first recessed groove is used to accommodate bolt heads or nuts.

8. The hole positioning device according to claim 7, characterized in that, The second scale has a second recess on the downward side, which corresponds to the second elongated hole. The second recess is used to accommodate bolt heads or nuts.

9. The hole positioning device according to claim 8, characterized in that, The first scale is also provided with a third elongated hole on its side. The third elongated hole is arranged along the length direction of the first scale and penetrates the inner wall of the first elongated hole. The hole positioning device also includes a first screw that passes through the third elongated hole and is connected to the first sliding member. The first screw is used to fix the first sliding member.

10. The hole positioning device according to claim 9, characterized in that, The second scale is also provided with a fourth elongated hole on its side. The fourth elongated hole is arranged along the length direction of the second scale and penetrates the inner wall of the second elongated hole. The hole positioning device also includes a second screw that passes through the fourth elongated hole and is connected to the second sliding member. The second screw is used to fix the second sliding member.

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