Calibration device and calibration method for a crimping tool

Abstract

The application provides a kind of calibration device and calibration method of crimping tool, comprising: main workbench (1), first adjustable workbench (5), rotating hemisphere (7), second adjustable workbench (8), connecting rod, universal level bubble (12), movable baffle (13) and pressing plate (14);Crimping tool calibration device ensures the accuracy of the size of the pressure head during calibration, improves the calibration efficiency of the crimping tool, and the calibration device can also be applied to the fixing and leveling work of other measuring tools during calibration process, which has a certain angle between the measured surface and the optical instrument table surface, the calibration device has low manufacturing cost, has greater popularization and application value, and better social and economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of geometric measurement technology, and particularly relates to a calibration device and calibration method for a crimping tool. Background Technology

[0002] Crimping tools refer to various types of crimping pliers used for crimping wires with silver-plated, tin-plated, or nickel-plated copper cores. Crimping tools mainly include crimping heads, handles, locking devices, and gear adjustment devices. Among these, the interaction and diameter of the crimping heads affect the crimping effect and have a direct impact on the crimping quality.

[0003] Therefore, the calibration items for crimping tools mainly involve the calibration of the indenter size. Currently, there are no relevant calibration standards for crimping tools as a basis. Therefore, new calibration devices and calibration methods need to be studied for crimping tools.

[0004] Crimping tools come in various specifications and models, and the shapes of the indenters that need to be calibrated are also different. However, the dimensions of the indenters are all minute dimensions that cannot be measured by contact measuring equipment. Generally, optical measuring equipment is selected to calibrate the dimensions of the indenters. During calibration, ordinary placement measurement will affect the accuracy of the final measurement value, resulting in a large error. Summary of the Invention

[0005] This invention provides a calibration device and method for crimping tools, solving the problem of poor calibration accuracy caused by the diverse specifications of existing crimping tools.

[0006] The first aspect of the present invention provides a calibration device for a crimping tool, comprising: a main worktable 1, a first adjustable worktable 5, a rotating hemisphere 7, a second adjustable worktable 8, a connecting rod, a universal level 12, a movable baffle 13, and a pressure plate 14;

[0007] The main worktable 1 has a fixed baffle 2 on its side, with two slots on it. Two rotary clamps 3 are installed in the slots and clamp the movable baffle 13. The fixed baffle 2 and the movable baffle 13 are used to fix the measuring tool to be calibrated. The upper surface of the fixed baffle 2 and the movable baffle 13 has four threaded holes, which are used to cooperate with the pressure plate 14 to fix the upper surface of the measuring tool to be calibrated.

[0008] The lower surface of the main worktable 1 is rotatably connected to the first adjustable worktable 5, and the rotation axis is set along the axis of symmetry in the length direction of the main worktable 1; a rotating hemisphere 7 is mounted on the bottom of the main worktable 1, and a first threaded knob 6 is set on the side. The first threaded knob 6 contacts the rotating hemisphere 7. By rotating the first threaded knob 6, the rotating hemisphere 7 is pushed, thereby driving the main worktable 1 to rotate relative to the first adjustable worktable 5.

[0009] A second adjustable worktable 8 is provided below the first adjustable worktable 5 and is rotatably connected by a rotating shaft along the width direction of the main worktable 1; a worm gear is provided inside the second adjustable worktable 8, and the worm gear is connected to the rotating shaft to form a worm gear drive; a second threaded knob 9 is connected to the worm gear, which drives the worm gear to rotate, thereby driving the first adjustable worktable 5 to rotate with the rotating shaft.

[0010] The universal level 12 is connected to the bottom support platform via a connecting rod. The connecting rod can be adjusted in terms of up / down and back / forward positions, making it convenient for the universal level to contact the surface of the workpiece being measured.

[0011] Optionally, the bottom support platform includes: a horizontal bubble magnetic base 10;

[0012] The horizontal bubble magnetic base 10 is magnetically attached and adsorbs onto the side of the second adjustable worktable 8.

[0013] Optionally, the connecting rod includes a longitudinal connecting rod 11 and a transverse connecting rod;

[0014] The longitudinal connecting rod 11 is connected to the bottom support platform, and the transverse connecting rod is set on the longitudinal connecting rod and its position is adjustable up and down along the height direction of the longitudinal connecting rod;

[0015] The universal level 12 is connected to the horizontal connecting rod and its position is adjustable along the horizontal connecting rod.

[0016] Optionally, the upper surface of the first adjustable worktable 5 is provided with a hemispherical groove for accommodating the rotating hemisphere 7, and there is a gap between the groove and the rotating hemisphere 7.

[0017] Optionally, the lower surface of the main worktable 1 is provided with two rotating shafts, which are distributed on both sides of the rotating hemisphere 7;

[0018] Two single ears are provided on the upper surface of the first adjustable worktable 5, distributed on both sides of the hemispherical groove, and connected to two rotating shafts.

[0019] Optionally, the gap between the main worktable 1 and the first adjustable worktable 5 can be adjusted according to the rotation angle of the main worktable 1.

[0020] Optionally, the upper surfaces of the fixed baffle 2 and the movable baffle 13 are evenly distributed with four threaded holes;

[0021] The pressure plate 14 is long and narrow, with a long slot in the center;

[0022] The pressure plate 14 is connected to the main worktable 1 by two bolts 15 through the threaded holes on the elongated slot, the fixed baffle 2, and the movable baffle 13.

[0023] A second aspect of the present invention provides a calibration method using a calibration apparatus employing a crimping tool as described in any one of the first aspects, comprising the following steps:

[0024] S1. Secure the handle of the crimping tool.

[0025] Place the crimping tool on the workbench of the calibration device, with one end pressed against the fixed surface of the workbench. After pressing the handle to its limit, press the movable surface of the workbench against the other end of the crimping tool. Since the outer contour of the crimping tool is irregular, the movable surface of the workbench can also deflect at an angle, ensuring that both the front and rear ends of the movable surface can contact the sides of the crimping tool. After the two sides of the crimping tool are fixed, press the pressure plate against the top of the crimping tool. In this way, the work of fixing the handle of the crimping tool is completed.

[0026] S2. Level the crimping tool.

[0027] After the crimping tool is fixed, it needs to be leveled using a universal level. First, adjust the angle of the universal level to ensure that the bubble is in the center when the universal level is in its free state. Since the universal level connecting rod is in contact with the worktable, the position of the level can be considered parallel to the worktable. Then, contact the level with the upper surface of the part of the crimping head being measured. At this time, the deflection position of the level is the tilt angle between the surface of the crimping head being measured and the worktable surface. Adjust the direction of the four angles of the worktable (front, back, left, and right) using the worktable knob and observe the position of the level. After the level bubble is adjusted to the center position, it can be considered that the surface of the crimping head being measured is parallel to the worktable surface. At this time, the leveling of the crimping tool is completed.

[0028] S3. Calibrate the crimping tool.

[0029] After the crimping tool is leveled, the crimping head is horizontal to the optical instrument table. Adjust the focal length of the optical instrument lens to make the crimping head clearly visible. Take points on the edge of the crimping head using the optical instrument and evaluate the dimensions. After the metrological characteristics are calculated, output the calibration result data. Remove the crimping tool from the calibration device to complete the calibration of the crimping tool.

[0030] This invention provides a calibration device and method for a crimping tool. The calibration device ensures the accuracy of the crimping head size during the calibration process, improves the calibration efficiency of the crimping tool, and can also be applied to the fixing and leveling of other measuring tools whose measured surfaces are at a certain angle to the optical instrument table during the calibration process. The calibration device has low manufacturing cost, great application value, and good social and economic benefits. Attached Figure Description

[0031] Figure 1 A calibration device for crimping tools;

[0032] Figure 2 Main workbench structure diagram;

[0033] Figure 3 Main workbench accessory structure diagram;

[0034] Figure 4 Structural diagram of the adjustable worktable (middle section);

[0035] Figure 5 Structural diagram of the adjustable worktable (bottom);

[0036] Figure 6 Diagram of the omnidirectional horizontal bubble structure;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1—Main worktable 2—Fixed baffle

[0039] 3—Rotary clamp; 4—Threaded hole

[0040] 5—First adjustable worktable; 6—First threaded knob

[0041] 7—Rotating hemisphere; 8—Second adjustable worktable

[0042] 9—Second threaded knob; 10—Horizontal bubble magnetic base

[0043] 11-Level Bulb Connector 12-Universal Level Bulb

[0044] 13-Modible baffle 14-Pressure plate

[0045] 15-Bolt, 16-Nut. Detailed Implementation

[0046] To make the technical embodiments and advantages of the present invention clearer, the technical solutions in the examples of the present invention are described in more detail. The embodiments described in the accompanying drawings are only some embodiments of the present invention and are intended to explain the content of the present invention, and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will now be described in detail with reference to the accompanying drawings.

[0047] This invention addresses two problems that arise during the calibration process of crimping tools due to their shape, specifications, and usage characteristics. First, the crimp head size calibration must be performed when the crimping tool handle is pressed to its limit; however, the handle automatically springs back to its initial state after being pressed to its limit, requiring the handle to be fixed before measurement. Second, apart from the crimp head, the non-working surfaces of the crimping tool cannot be used as reference surfaces. After placing the crimping tool on the worktable, the crimp head can never be parallel to the worktable, resulting in an angular error between the measured surface and the worktable when measured with optical instruments, directly affecting the accuracy of the crimp head size. This invention solves the problems of handle fixation and crimp head leveling during the calibration process.

[0048] like Figure 1-6 As shown, the present invention provides a crimping tool calibration device, characterized in that it comprises a main worktable, two adjustable worktables, a universal level, and a longitudinal connecting rod.

[0049] The main worktable has two slots, each equipped with a rotary clamp. A fixed baffle is located on the side of the worktable to secure the measuring tool being calibrated. The upper surface of the fixed baffle has four threaded holes, which, in conjunction with a pressure plate, fix the upper surface of the measuring tool. Below the main worktable are two cylindrical connecting rods and a rotating hemisphere. The cylindrical connecting rods primarily connect the main worktable to the adjustable worktable in the middle, serving a connecting function without affecting the rotation of the main worktable. The rotating hemisphere controls the direction of rotation of the main worktable.

[0050] Two adjustable worktables are connected by a cylinder, allowing them to move circumferentially with the cylinder. The middle adjustable worktable, by turning a knob, drives a screw that acts on the rotating hemisphere of the main worktable, causing the main worktable to swing back and forth. The bottom adjustable worktable, by turning a knob, drives a screw, moving the middle adjustable worktable along with the main worktable in a circular motion around the cylinder, thus allowing the main worktable to swing left and right.

[0051] The universal bubble level is connected to the bottom support platform via a connecting rod. The connecting rod can be adjusted in both vertical and horizontal positions to facilitate contact between the universal bubble level and the surface of the workpiece being measured. The support platform is magnetic and can be attached to the side of the adjustable worktable.

[0052] A calibration device and method for a crimping tool are disclosed. The calibration device can be used to fix and level the crimping tool, and in conjunction with optical instruments, the crimping tool can be calibrated. The specific steps are as follows:

[0053] 1. Secure the handle of the crimping tool.

[0054] Place the crimping tool on the worktable of the calibration device, with one end pressed against the fixed surface of the worktable. After pressing the handle to its limit, press the movable surface of the worktable against the other end of the crimping tool. Because the outer contour of the crimping tool is irregularly shaped, the movable surface of the worktable can also deflect at an angle, ensuring that both ends of the movable surface can contact the sides of the crimping tool. After fixing both sides of the crimping tool, press the pressure plate onto the top of the crimping tool. This completes the fixing of the crimping tool handle.

[0055] 2. Level the crimping tool.

[0056] After the crimping tool is fixed, it needs to be leveled using a universal level. First, adjust the angle of the universal level to ensure that the bubble is in the center when the universal level is in its free state. Since the universal level connecting rod is in contact with the worktable, the position of the level can be considered parallel to the worktable. Then, contact the level with the upper surface of the part of the crimping head being measured. At this time, the deflection position of the level is the tilt angle between the surface of the crimping head being measured and the worktable surface. Adjust the four directions of the worktable (front, back, left, and right) using the worktable knobs and observe the position of the level. Once the level bubble is adjusted to the center position, it can be considered that the surface of the crimping head being measured is parallel to the worktable surface. At this point, the leveling of the crimping tool is complete.

[0057] 3. Calibrate the crimping tools.

[0058] After the crimping tool is leveled, the crimping head is horizontal to the optical instrument table. Adjust the focal length of the optical instrument lens to make the crimping head clearly visible. Take points on the edge of the crimping head using the optical instrument and evaluate the dimensions. After the metrological characteristics are calculated, output the calibration result data. Remove the crimping tool from the calibration device to complete the calibration of the crimping tool.

[0059] This method can be used for fixing and leveling the crimping tool before calibration. The specific steps are as follows.

[0060] 1. Fix the crimping tool.

[0061] Specific steps: Place the crimping tool on the main worktable of the calibration device, with one end pressed against the fixed baffle. Install the movable baffle on the rotary clamp, tighten the handle of the crimping tool, and then fix the movable baffle against the other end of the crimping tool. Place the two pressure plates on top of the crimping tool, and after passing the bolts through the gaps in the middle of the pressure plates, install them in the threaded holes on the top of the movable baffle and the fixed baffle respectively. Then tighten the nuts to press firmly on top of the baffles. At this point, the crimping tool is fixed.

[0062] 2. Level the crimping tool.

[0063] Specific steps: Attach the bubble level connecting rod and magnetic base to the side of the bottom adjustable worktable. Fine-tune the base position so that the bubble level is centered in its free state. Fix the magnetic base. Adjust the height and position of the bubble level using the connecting rod until it contacts the upper surface of the crimping tool's indentation. Observe the position of the bubble inside the bubble level. If the bubble is still centered, move the bubble level aside and measurement can be performed directly. If the bubble has shifted and is no longer centered, rotate the adjustable worktable knobs at the center and bottom according to the bubble's actual position. The center adjustable worktable controls the forward and backward tilt angle of the main worktable, while the bottom adjustable worktable controls the left and right tilt angle. Adjust the main worktable angle to center the bubble level. At this point, the leveling of the crimping tool is complete, and the indentation size can be calibrated using optical equipment.

Claims

1. A calibration device for a crimping tool, characterized in that, include: Main worktable (1), first adjustable worktable (5), rotating hemisphere (7), second adjustable worktable (8), connecting rod, universal level (12), movable baffle (13) and pressure plate (14); The main worktable (1) has a fixed baffle (2) on its side, with two slots on the top. Two rotary clamps (3) are installed on the slots, and the rotary clamps (3) hold the movable baffle (13). The fixed baffle (2) and the movable baffle (13) are used to fix the measuring tool to be calibrated. The upper surfaces of the fixed baffle (2) and the movable baffle (13) have four threaded holes, which are used to cooperate with the pressure plate (14) to fix the upper surface of the measuring tool to be calibrated. The lower surface of the main worktable (1) is rotatably connected to the first adjustable worktable (5), and the rotation axis is set along the axis of symmetry in the length direction of the main worktable (1); a rotating hemisphere (7) is mounted on the bottom of the main worktable (1), and a first threaded knob (6) is set on the side. The first threaded knob (6) contacts the rotating hemisphere (7). By rotating the first threaded knob (6), the rotating hemisphere (7) is pushed, thereby driving the main worktable (1) to rotate relative to the first adjustable worktable (5); The first adjustable worktable (5) is provided with a second adjustable worktable (8) below it, which is rotatably connected by a rotating shaft along the width direction of the main worktable (1); a worm is provided in the second adjustable worktable (8), and the worm is connected to the rotating shaft to form a worm drive; the second threaded knob (9) is connected to the worm, which drives the worm to rotate, thereby driving the first adjustable worktable (5) to rotate with the rotating shaft. The universal level (12) is connected to the bottom support platform through a connecting rod. The connecting rod can be adjusted in the up and down position and the front and back position, so that the universal level can contact the surface of the workpiece being measured.

2. The calibration device for the crimping tool according to claim 1, characterized in that, The bottom support platform includes: a horizontal bubble magnetic base (10); The horizontal bubble magnetic base (10) is magnetically attached and adsorbed on the side of the second adjustable worktable (8).

3. The calibration device for the crimping tool according to claim 1, characterized in that, The connecting rod includes a longitudinal connecting rod (11) and a transverse connecting rod; The longitudinal connecting rod (11) is connected to the bottom support platform, and the transverse connecting rod is set on the longitudinal connecting rod and its position is adjustable up and down along the height direction of the longitudinal connecting rod; The universal level bubble (12) is connected to the transverse connecting rod and its position is adjustable along the transverse connecting rod.

4. The calibration device for the crimping tool according to claim 1, characterized in that, The upper surface of the first adjustable worktable (5) is provided with a hemispherical groove for accommodating the rotating hemisphere (7), and there is a gap between the groove and the rotating hemisphere (7).

5. The calibration device for the crimping tool according to claim 4, characterized in that, Two rotating shafts are provided on the lower surface of the main worktable (1), which are distributed on both sides of the rotating hemisphere (7); The upper surface of the first adjustable worktable (5) is provided with two single ears, which are distributed on both sides of the hemispherical groove and connected to two rotating shafts.

6. The calibration device for the crimping tool according to claim 5, characterized in that, The gap between the main worktable (1) and the first adjustable worktable (5) is adjusted according to the rotation angle of the main worktable (1).

7. The calibration device for the crimping tool according to claim 1, characterized in that, The upper surfaces of the fixed baffle (2) and the movable baffle (13) are evenly distributed with four threaded holes; The pressure plate (14) is long and narrow, with a long slot in the center; The pressure plate (14) is connected to the main worktable (1) by two bolts (15) through the threaded holes on the long slot, the fixed baffle (2) and the movable baffle (13).

8. A calibration method using a calibration apparatus for a crimping tool as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Secure the handle of the crimping tool. Place the crimping tool on the workbench of the calibration device, with one end pressed against the fixed surface of the workbench. After pressing the handle to its limit, press the movable surface of the workbench against the other end of the crimping tool. Since the outer contour of the crimping tool is irregular, the movable surface of the workbench can also deflect at an angle, ensuring that both the front and rear ends of the movable surface can contact the sides of the crimping tool. After the two sides of the crimping tool are fixed, press the pressure plate against the top of the crimping tool. In this way, the work of fixing the handle of the crimping tool is completed. S2. Level the crimping tool. After the crimping tool is fixed, it needs to be leveled using a universal level. First, adjust the angle of the universal level to ensure that the bubble is in the center when the universal level is in its free state. Since the universal level connecting rod is in contact with the worktable, the position of the level can be considered parallel to the worktable. Then, contact the level with the upper surface of the part of the crimping head being measured. At this time, the deflection position of the level is the tilt angle between the surface of the crimping head being measured and the worktable surface. Adjust the direction of the four angles of the worktable (front, back, left, and right) using the worktable knob and observe the position of the level. After the level bubble is adjusted to the center position, it can be considered that the surface of the crimping head being measured is parallel to the worktable surface. At this time, the leveling of the crimping tool is completed. S3. Calibrate the crimping tool. After the crimping tool is leveled, the crimping head is horizontal to the optical instrument table. Adjust the focal length of the optical instrument lens to make the crimping head clearly visible. Take points on the edge of the crimping head using the optical instrument and evaluate the dimensions. After the metrological characteristics are calculated, output the calibration result data. Remove the crimping tool from the calibration device to complete the calibration of the crimping tool.

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