Electric tool calibration equipment

Abstract

The utility model relates to electric tool calibration equipment, which belongs to the technical field of electric tool calibration, and comprises a base, a table top and a standard torsion meter, the table top is provided with a clamp and a fixing structure, the clamp is provided with a pistol type electric screwdriver, and the clamp comprises a bracket. According to the electric tool calibration equipment, the fixture and the fixing structure are arranged, the coaxial design of the fixture is utilized, perfect alignment of an electric screwdriver and a standard torsion instrument is ensured, measurement errors caused by installation deviation are reduced, the calibration precision is improved, displacement of the electric screwdriver in the test is prevented through the adaptive design of a limiting groove and a groove, and the test accuracy is improved. The clamp is particularly suitable for irregular shapes of gun type electric screwdrivers, the stability of torque transmission is guaranteed, the fixing structure can rapidly fix the clamp by turning over the adjusting support, therefore, clamps of different sizes can be conveniently and rapidly replaced to adapt to calibration work of the gun type electric screwdrivers of different sizes, the time needed for replacing the clamps is shortened, and the work efficiency is improved. And the calibration efficiency of the gun type electric screwdriver is further improved.

Description

Technical Field

[0001] This utility model relates to the field of power tool calibration technology, specifically to a power tool calibration device. Background Technology

[0002] Power tools, also known as electric screwdrivers, can be categorized by their overall shape into pistol-type, straight-barrel, and curved-head electric screwdrivers. Power tool calibration is a device used to calibrate the torque of electric screwdrivers. It uses a standard torque meter to detect the output torque of the screwdriver and compares it with the torque recorded on the screwdriver itself to calibrate the output torque. Calibration must be performed in a constant temperature, dry environment free from strong electromagnetic interference to effectively reduce the impact of environmental factors on the accuracy of power tool calibration. The calibration cycle is generally 6-12 months, which needs to be adjusted according to the frequency of use. Power tool calibration usually also requires the use of a suitable clamp to replace manual holding of the power tool, reducing the difficulty of power tool calibration.

[0003] Chinese Patent Publication No. CN209727339U discloses a torque calibration device for a torque screwdriver, which uses a three-jaw chuck to clamp and fix the electric screwdriver. In actual use, the three-jaw chuck can only clamp one end of a straight-bar type electric screwdriver or a bent-end type electric screwdriver. However, the end of a pistol type electric screwdriver is irregularly shaped, which causes the three-jaw chuck to be unstable in positioning the pistol type electric screwdriver. Therefore, a power tool calibration device is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electric tool calibration device that facilitates the positioning of pistol-type electric screwdrivers. It solves the problem that in actual use, the three-jaw chuck can only clamp one end of a straight-bar or bent-end electric screwdriver, while the end of a pistol-type electric screwdriver is irregularly shaped, leading to unstable positioning of the pistol-type electric screwdriver by the three-jaw chuck.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a power tool calibration device, comprising a base, a table, and a standard torque meter, characterized in that: the table is provided with a clamp and a fixing structure, and the clamp is provided with a pistol-type electric screwdriver;

[0006] The clamp includes a bracket, the top of which is a sloping surface that is lower in the front and higher in the back. The bracket is mounted on a table, and clamping windows are provided on both sides of the bracket.

[0007] Two notches are provided at the lower end of the slope, and a front limiting plate is fixedly installed on the two notches. The front limiting plate has a groove for limiting the front end of the pistol-type electric screwdriver.

[0008] Two notches are provided at the higher end of the inclined surface, and a limiting plate is fixedly installed on the two notches. The limiting plate is provided with a limiting groove for limiting the grip of the pistol-type electric screwdriver.

[0009] The bracket is fixedly mounted with an annular support for limiting the pistol-type electric screwdriver bit holder. The annular support includes horizontal plates at both ends that are fixedly connected to the bracket. An annular platform for supporting the pistol-type electric screwdriver bit holder is fixedly mounted on the horizontal plates.

[0010] Furthermore, the fixing structure includes a mounting base, a connecting bracket, a clamping member, an adjusting bracket, and a connecting plate. The mounting base is fixedly installed on the table and located on one side of the clamp. One end of the connecting bracket is hinged to the mounting base. The clamping member is threadedly connected to one end of the connecting bracket. The adjusting bracket is hinged to the mounting base. The connecting plate is hinged to both the adjusting bracket and the connecting bracket.

[0011] Furthermore, four pins are fixedly installed on the table surface, and four slots are provided at the bottom of the bracket. One end of each pin passes through and extends into the interior of the slot. The standard torque meter is fixedly installed on the table surface, and the connector on the standard torque meter is coaxial with the center of the annular support. The pistol-type electric screwdriver bit is perpendicular to the table surface.

[0012] Furthermore, the clamping component includes a pressure head and a threaded post, which are fixedly connected. The threaded post is threadedly connected to the connecting bracket, and the bottom of the pressure head abuts against the inner bottom wall of the clamping window.

[0013] Furthermore, the adjustment bracket includes a plastic handle and a Y-shaped frame, the plastic handle being fixedly installed at the end of the Y-shaped frame, and the Y-shaped frame being hinged to both sides of the mounting base.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This power tool calibration device, equipped with a clamp and fixing structure, utilizes the coaxial design of the clamp to ensure perfect alignment between the electric screwdriver and the standard torque meter, reducing measurement errors caused by installation deviations and improving calibration accuracy. The matching design of the limiting groove and recess prevents the electric screwdriver from shifting during testing, which is especially suitable for the irregular shape of pistol-type electric screwdrivers, ensuring the stability of torque transmission. The fixing structure allows for quick clamp fixation by flipping and adjusting the bracket, facilitating the rapid replacement of clamps of different sizes to adapt to the calibration of pistol-type electric screwdrivers of different sizes. This reduces the time required for clamp replacement and further improves the efficiency of pistol-type electric screwdriver calibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the positions of the structural clamp, pistol-type electric screwdriver, and fixing structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 1 A schematic diagram of the middle platform and a standard torque meter;

[0019] Figure 4 This is an enlarged view of the structural fixture of this utility model;

[0020] Figure 5 This is an exploded view of the structural clamp of this utility model;

[0021] Figure 6 This is an enlarged view of the structural fixing structure of this utility model.

[0022] In the diagram: 1. Base; 2. Tabletop; 21. Pin; 3. Standard torque meter; 4. Clamp; 41. Bracket; 411. Inclined surface; 412. Pressing window; 413. Notch; 414. Notch; 42. Annular support; 421. Horizontal plate; 422. Annular platform; 43. Front limiting plate; 431. Groove; 44. End limiting plate; 441. Limiting groove; 5. Pistol-type electric screwdriver; 6. Fixing structure; 61. Mounting base; 62. Connecting bracket; 63. Pressing component; 64. Adjusting bracket; 65. Connecting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figure 1-6 The power tool calibration device in this embodiment includes a base 1, a table 2 and a standard torque meter 3. A clamp 4 and a fixing structure 6 are provided on the table 2, and a pistol-type electric screwdriver 5 is provided on the clamp 4.

[0025] Example 2: Please refer to Figure 1-6 Based on Embodiment 1, it includes a base 1, a table 2 and a standard torque meter 3. The table 2 is provided with a clamp 4 and a fixing structure 6. The clamp 4 is provided with a pistol-type electric screwdriver 5.

[0026] The clamp 4 includes a bracket 41, the top of which is a sloping surface 411 that is lower in the front and higher in the back. The bracket 41 is installed on the table 2, and clamping windows 412 are provided on both sides of the bracket 41.

[0027] Two notches 413 are provided at the lower end of the slope. A front limiting plate 43 is fixedly installed on the two notches 413. A groove 431 for limiting the front end of the pistol-type electric screwdriver 5 is provided on the front limiting plate 43.

[0028] Two notches 414 are provided at the higher end of the slope. A limiting plate 44 is fixedly installed on the two notches 414. A limiting groove 441 for limiting the grip of the pistol-type electric screwdriver 5 is provided on the limiting plate 44.

[0029] A ring-shaped support 42 for limiting the bit holder of the pistol-type electric screwdriver 5 is fixedly installed on the bracket 41. The ring-shaped support 42 includes a horizontal plate 421 with both ends fixedly connected to the bracket 41. A ring-shaped platform 422 for supporting the bit holder of the pistol-type electric screwdriver 5 is fixedly installed on the horizontal plate 421. A circular groove for installing the ring-shaped platform 422 is opened on the horizontal plate 421.

[0030] Four pins 21 are fixedly installed on the table 2. Four slots are opened at the bottom of the bracket 41. One end of the pin 21 passes through and extends into the inside of the slot. The standard torque meter 3 is fixedly installed on the table 2. The connector on the standard torque meter 3 is coaxial with the center of the annular bracket 42. The bit of the pistol-type electric screwdriver 5 is perpendicular to the table 2. By using the cooperation of the pins 21 and the slots, the bracket 41 is accurately installed on the table 2, and the annular bracket 42 and the connector of the standard torque meter 3 are coaxial.

[0031] Using the above technical solution, the pistol-type electric screwdriver 5 is inserted into the clamp 4. The position of the pistol-type electric screwdriver 5 is restricted by the groove 431 on the front limiting plate 43 and the limiting groove 441 on the end limiting plate 44. The screwdriver bit of the pistol-type electric screwdriver 5 passes through the annular support 42 and is inserted into the connector of the standard torque meter 3, so that the connector, the annular support 42 and the output end of the pistol-type electric screwdriver 5 are coaxial. Then, the pistol-type electric screwdriver 5 is held and started for calibration.

[0032] Example 3: Please refer to Figure 1-6 Based on Embodiment 2, the fixing structure 6 includes a mounting base 61, a connecting bracket 62, a clamping member 63, an adjusting bracket 64, and a connecting plate 65. The mounting base 61 is fixedly mounted on the table 2 and located on one side of the clamp 4. One end of the connecting bracket 62 is hinged to the mounting base 61. The clamping member 63 is threadedly connected to one end of the connecting bracket 62. The adjusting bracket 64 is hinged to the mounting base 61. The connecting plate 65 is hinged to the adjusting bracket 64 and the connecting bracket 62 respectively.

[0033] The clamping component 63 includes a pressure head and a threaded post, which are fixedly connected. The threaded post is threadedly connected to the connecting bracket 62. The bottom of the pressure head abuts against the inner bottom wall of the clamping window, which facilitates rotating the threaded post to control the distance between the connecting bracket 62 and the pressure head, thereby adapting to clamps 4 of different sizes.

[0034] In addition, the adjustment bracket 64 includes a plastic handle and a Y-shaped bracket. The plastic handle is fixedly installed at the end of the Y-shaped bracket, and the Y-shaped bracket is hinged to both sides of the mounting base 61. The Y-shaped bracket and plastic handle of the adjustment bracket 64 facilitate quick operation, improve calibration efficiency, and shorten the time required for a single calibration.

[0035] Using the above technical solution, select a clamp 4 suitable for the size of the pistol-type electric screwdriver 5, insert the bracket 41 into the four pins 21 on the table 2, and then flip the two adjusting brackets 64 towards the pistol-type electric screwdriver 5, so that the adjusting brackets 64 drive the connecting plate 65 to flip synchronously, so that the connecting plate 65 acts on the connecting bracket 62, and the clamping member 63 on the connecting bracket 62 flips towards the clamping window of the bracket 41 until the adjusting bracket 64 is perpendicular to the connecting bracket 62. At this time, the pressure head in the clamping member 63 firmly clamps the bracket 41, thereby quickly completing the installation of the clamp 4.

[0036] The working principle of the above embodiments is as follows:

[0037] When using this power tool calibration equipment, select a clamp 4 that is suitable for the size of the pistol-type electric screwdriver 5, insert the bracket 41 into the four pins 21 on the table 2, and then flip the two adjusting brackets 64 towards the pistol-type electric screwdriver 5. This causes the adjusting brackets 64 to drive the connecting plate 65 to flip synchronously, so that the connecting plate 65 acts on the connecting bracket 62. The clamping member 63 on the connecting bracket 62 flips towards the clamping window of the bracket 41 until the adjusting bracket 64 is perpendicular to the connecting bracket 62. At this time, the pressure head in the clamping member 63 firmly clamps the bracket 41, thereby quickly completing the installation of the clamp 4.

[0038] Then, insert the pistol-type electric screwdriver 5 into the clamp 4, and use the groove 431 on the front limiting plate 43 and the limiting groove 441 on the end limiting plate 44 to restrict the position of the pistol-type electric screwdriver 5. The output end of the pistol-type electric screwdriver 5 passes through the annular support 42 and is inserted into the connector of the standard torque meter 3, so that the connector, the annular support 42 and the output end of the pistol-type electric screwdriver 5 are coaxial. Then, hold the pistol-type electric screwdriver 5 and start the pistol-type electric screwdriver 5 for calibration.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power tool calibration device, comprising a base (1), a table (2), and a standard torque meter (3), characterized in that: The table (2) is provided with a clamp (4) and a fixing structure (6), and the clamp (4) is provided with a pistol-type electric screwdriver (5). The clamp (4) includes a bracket (41), the top of the bracket (41) is a sloping surface (411) with a lower front and a higher back, the bracket (41) is installed on the table (2), and a pressing window (412) is provided on both sides of the bracket (41). Two notches (413) are provided at the lower end of the slope. A front limiting plate (43) is fixedly installed on the two notches (413). A groove (431) for limiting the front end of the pistol-type electric screwdriver (5) is provided on the front limiting plate (43). Two notches (414) are provided at the higher end of the slope. A limiting plate (44) is fixedly installed on the two notches (414). A limiting groove (441) for limiting the grip of the pistol-type electric screwdriver (5) is provided on the limiting plate (44). The bracket (41) is fixedly installed with an annular support (42) for limiting the bit holder of the pistol-type electric screwdriver (5). The annular support (42) includes a horizontal plate (421) with both ends fixedly connected to the bracket (41). The horizontal plate (421) is fixedly installed with an annular platform (422) for supporting the bit holder of the pistol-type electric screwdriver (5).

2. The power tool calibration device according to claim 1, characterized in that: The fixed structure (6) includes a mounting base (61), a connecting bracket (62), a clamping member (63), an adjusting bracket (64), and a connecting plate (65). The mounting base (61) is fixedly installed on the table (2) and located on one side of the clamp (4). One end of the connecting bracket (62) is hinged to the mounting base (61). The clamping member (63) is threaded to one end of the connecting bracket (62). The adjusting bracket (64) is hinged to the mounting base (61). The connecting plate (65) is hinged to the adjusting bracket (64) and the connecting bracket (62) respectively.

3. The power tool calibration device according to claim 1, characterized in that: Four pins (21) are fixedly installed on the table (2). Four slots are provided at the bottom of the bracket (41). One end of the pin (21) passes through and extends into the inside of the slot. The standard torque meter (3) is fixedly installed on the table (2). The connector on the standard torque meter (3) is coaxial with the center of the annular support (42). The bit of the pistol-type electric screwdriver (5) is perpendicular to the table (2).

4. The power tool calibration device according to claim 2, characterized in that: The clamping component (63) includes a pressure head and a threaded post, which are fixedly connected. The threaded post is threadedly connected to the connecting bracket (62), and the bottom of the pressure head abuts against the inner bottom wall of the clamping window (412).

5. The power tool calibration device according to claim 2, characterized in that: The adjustment bracket (64) includes a plastic handle and a Y-shaped frame. The plastic handle is fixedly installed at the end of the Y-shaped frame, and the Y-shaped frame is hinged to both sides of the mounting base (61).

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