A torque reference machine

Abstract

The present invention relates to a torque reference machine, which includes a shell, and a lever weight mechanism, a horizontal moving mechanism and a lifting mechanism arranged on the shell; the lever weight mechanism is arranged on the horizontal moving mechanism, and the lever weight mechanism is located at one end of the shell, for loading torque, and the horizontal moving mechanism is arranged at the other end of the shell, for placing and connecting a workpiece to be measured, and adjusting the workpiece to be measured to be placed horizontally; the lifting mechanism is arranged on both sides of the shell, located below the lever weight mechanism, for lifting and lowering weights, and applying torque to the measurement. The present invention can ensure that the torque of the weight group remains unchanged, so as to realize the detection of various portable torque measuring instruments, such as standard torque meters, standard torque wrenches, working torque meters and torque wrenches. The device can realize the detection of all current portable torque measuring instruments through a unique lever design; it can be widely used in the field of measurement.

Description

Technical Field

[0001] The invention relates to a measuring and detecting device, in particular to a torque reference machine. Background Art

[0002] At present, there are various torque reference machines on the market. The factors affecting the uncertainty of the torque reference device are mainly composed of the uncertainty of the lever arm length, the uncertainty of the weight loading force, the uncertainty of the bearing friction torque, the uncertainty caused by the coaxiality change, the uncertainty caused by stress, and the uncertainty caused by the horizontality of the lever arm. How to ensure that the torque reference device works in accordance with the torque mechanics model, reduce each uncertainty component, and ensure the uncertainty index of the entire device has become the key content of this project research. The torque application method of applying weights unilaterally is currently a common method used by torque reference devices, but this torque application method is not a pure torque application method. In addition to the torque, there is also a large pressure on the blade, which affects the sensitivity of the torque, and the applicable type is single. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide a torque reference machine, which can effectively improve the torque sensitivity and realize the detection of various portable torque measuring instruments.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a torque reference machine, which includes a shell, and a lever weight mechanism, a horizontal moving mechanism and a lifting mechanism arranged on the shell; the lever weight mechanism is arranged on the horizontal moving mechanism, and the lever weight mechanism is located at one end of the shell, for loading torque, and the horizontal moving mechanism is arranged at the other end of the shell, for placing and connecting the workpiece to be measured, and adjusting the workpiece to be measured to be placed horizontally; the lifting mechanism is arranged on both sides of the shell, located below the lever weight mechanism, for lifting and lowering weights to load torque for measurement.

[0005] Furthermore, the lever weight mechanism includes a lever, a steel belt, a weight group, a middle axis, a middle knife holder, an adjusting device, a middle knife and a middle knife support; the two ends of the lever are arranged in an arc-shaped structure, and the center of the arc is located on the blade of the middle knife; the weight group is connected to the two ends of the lever through the steel belt, and a mounting hole is arranged in the middle of the lever, the first end of the middle knife is fixed to one side of the lever through the adjusting device, and the second end of the middle knife passes through the mounting hole and is inserted into the middle knife holder, and the middle knife holder is installed on the other side of the lever; the second end of the middle knife is connected to one end of the middle axis, and the middle axis is connected to the middle knife holder through a bearing, and the other end of the middle axis is connected to one end of the measured piece; the middle knife support is arranged below the mounting hole, and the middle knife support is installed on the horizontal moving mechanism; the two ends of the middle knife located on both sides of the lever are mounted on the middle knife support and are in line contact with the middle knife support.

[0006] Furthermore, the adjusting device includes a horizontal adjusting device and a vertical adjusting device; the horizontal adjusting device is arranged on one side of the lever and is connected to the first end of the middle knife; the vertical adjusting device is arranged on the upper part of the lever, passes through the mounting hole and is in vertical contact with the middle knife.

[0007] Furthermore, the horizontal adjustment device includes an adjustment bracket, a middle adjustment nut, a middle locking nut and a middle adjustment bolt; one end of the adjustment bracket is connected to the first end of the middle knife, and the other end of the adjustment bracket is connected to the middle adjustment nut, the middle locking nut and the middle adjustment bolt in sequence.

[0008] Furthermore, the vertical adjustment device includes an upper adjusting nut, an upper adjusting bolt and an upper locking nut; one end of the upper adjusting bolt passes through the upper adjusting nut and the lever in sequence and vertically contacts the middle knife, and the other end of the upper adjusting bolt is connected to the upper locking nut.

[0009] Furthermore, the lever is provided with a side adjustment bolt, a side adjustment nut and a side locking nut for adjusting the left and right levels of the weight group; the side adjustment bolt passes through the side adjustment nut and is connected to the lever, and the side locking nut is provided at the end of the side adjustment bolt.

[0010] Furthermore, the horizontal moving mechanism includes a reducer support seat, a reduction motor, a horizontal handwheel, a linear guide, a horizontal base, a lever group pad and a hand-cranked lifting platform; the horizontal base is installed on the shell, and the lever group pad is provided at one end of the horizontal base, and the middle knife support is installed on the lever group pad; the linear guide is provided at the other end of the horizontal base, and the reducer support seat and the hand-cranked lifting platform are slidably provided on the linear guide, and the hand-cranked lifting platform is located between the reducer support seat and the lever group pad; the reduction motor is provided on the upper part of the reducer support seat, and the output shaft of the reduction motor passes through the reducer support seat and is connected to the other end of the measured piece; a driving rod is provided at the bottom of the reducer support seat, and the horizontal handwheel is provided at the end of the driving rod, and the horizontal handwheel drives the driving rod to move.

[0011] Furthermore, a hand wheel is provided on one side of the hand-cranked lifting platform.

[0012] Furthermore, the lifting mechanism includes a support plate, a pallet, a servo drive, a base and a guide shaft; the support plate is arranged on the upper part of the base, and circular holes are arranged at both ends of the support plate for the weight group to pass through the support plate; vertical slide rails are arranged on both sides of the shell below the support plate, and sliders driven by the servo drive are arranged on the vertical slide rails, and the pallet for supporting the weight group is arranged on the slider, and the guide shaft is arranged at the end of the pallet, and the two ends of the guide shaft are respectively connected to the base and the support plate.

[0013] Furthermore, a support column is provided at one end of the base, and the support column is arranged in the shell.

[0014] Due to the adoption of the above technical scheme, the present invention has the following advantages: the two ends of the lever adopted by the present invention are in an arc-shaped structure, and the central support can adopt a knife edge and various bearings (air bearings, etc.); the weight group is connected by a steel belt to ensure that the moment of force of the weight group remains unchanged, effectively improve the sensitivity, and realize the detection of various portable torque measuring instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 2. It is an exploded schematic diagram of a lever weight mechanism according to an embodiment of the present invention;

[0017] Figure 3 is an exploded schematic diagram of a horizontal moving mechanism according to an embodiment of the present invention;

[0018] Figure 4 It is a schematic diagram of the exploded structure of the lifting mechanism according to an embodiment of the present invention;

[0019] Figure numerals: 1 lever weight mechanism, 2 horizontal moving mechanism, 3 lifting mechanism, 101 lever, 102 steel belt, 103 weight group, 104 middle axis, 105 middle tool holder, 106 middle tool, 107 middle tool support, 108 adjustment bracket, 109 middle adjusting nut, 110 middle locking nut, 111 middle adjusting bolt, 112 upper adjusting nut, 113 upper adjusting bolt, 114 upper locking nut, 115 side adjusting bolt, 116 side adjusting nut, 117 side locking nut, 201 reducer support seat, 202 reduction motor, 203 horizontal handwheel, 204 linear guide, 205 horizontal base, 206 lever group pad, 207 hand-cranked lifting platform, 301 support plate, 302 support plate, 303 servo drive, 304 base, 305 support column, 306 guide shaft. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The present invention is described in detail below in conjunction with the drawings and embodiments.

[0021] like Figure 1 As shown, the present invention provides a torque reference machine, which includes a housing, and a lever weight mechanism 1, a horizontal moving mechanism 2 and a lifting mechanism 3 arranged on the housing. The lever weight mechanism 1 is arranged on the horizontal moving mechanism 2, and the lever weight mechanism 1 is located at one end of the housing for loading torque, and the horizontal moving mechanism 2 is arranged at the other end of the housing for placing and connecting the workpiece to be measured, and adjusting the workpiece to be measured to be placed horizontally. The lifting mechanism 3 is arranged on both sides of the housing, located below the lever weight mechanism 1, for lifting and lowering weights to load torque for measurement. Among them:

[0022] like Figure 2As shown, the lever weight mechanism 1 is a lever structure, which includes a lever 101, a steel belt 102, a weight group 103, a middle shaft 104, a middle knife holder 105, an adjustment device, a middle knife 106 and a middle knife support 107. Both ends of the lever 101 are set as arc structures, and the center of the arc is located on the blade of the middle knife 106. The weight group 103 is connected to both ends of the lever 101 through the steel belt 102, and the steel belt 102 ensures that the weight group 103 does not change its position when swinging. A mounting hole is provided in the middle of the lever 101. The first end of the middle knife 106 is fixed to one side of the lever 101 through an adjusting device. After the second end of the middle knife 106 passes through the mounting hole, it is inserted into the middle knife holder 105. The middle knife holder 105 is installed on the other side of the lever 101. The second end of the middle knife 106 is connected to one end of the middle axis 104, and the middle axis 104 is connected to the middle knife holder 105 through a bearing. The other end of the middle axis 104 is connected to one end of the measured object. A middle knife support 107 is provided below the mounting hole. The middle knife support 107 is installed on the horizontal moving mechanism 2 to support the entire lever weight mechanism 1. The two ends of the middle knife 106 located on both sides of the lever 101 are mounted on the middle knife support 107 and are in line contact with the middle knife support 107 to ensure that there is no interference from external forces during swinging.

[0023] In the above embodiment, the adjustment device includes a horizontal adjustment device and a vertical adjustment device. The horizontal adjustment device is arranged on one side of the lever 101 and connected to the first end of the middle blade 106; the vertical adjustment device is arranged on the upper part of the lever 101 and vertically contacts the middle blade 106 through the mounting hole. The horizontal adjustment device includes an adjustment bracket 108, a middle adjustment nut 109, a middle locking nut 110 and a middle adjustment bolt 111. One end of the adjustment bracket 108 is connected to the first end of the middle blade 106, and the other end of the adjustment bracket 108 is connected to the middle adjustment nut 109, the middle locking nut 110 and the middle adjustment bolt 111 in sequence, and the front and rear level of the entire mechanism is adjusted by the middle adjustment nut 109. The vertical adjustment device includes an upper adjustment nut 112, an upper adjustment bolt 113 and an upper locking nut 114. One end of the upper adjustment bolt 113 passes through the upper adjustment nut 112 and the lever 101 in sequence and vertically contacts the middle blade 106, and the other end of the upper adjustment bolt 113 is connected to the upper locking nut 114.

[0024] In the above embodiments, the lever 101 is also provided with a side adjustment bolt 115, a side adjustment nut 116 and a side locking nut 117 for adjusting the left and right level of the weight group 103; the side adjustment bolt 115 passes through the side adjustment nut 116 and is connected to the lever 101, and a side locking nut 117 is provided at the end of the side adjustment bolt 115.

[0025] In the above embodiments, the lever 11 may adopt a hollow structure.

[0026] In the above embodiments, the middle blade 106 may also be replaced by various types of bearings, such as air bearings.

[0027] like Figure 3 As shown, the horizontal moving mechanism 2 includes a reducer support seat 201, a reduction motor 202, a horizontal hand wheel 203, a linear guide rail 204, a horizontal base 205, a lever group pad 206 and a hand-cranked lifting platform 207. The horizontal base 205 is installed on the housing, and a lever group pad 206 is provided at one end of the horizontal base 205, and the middle knife support 107 is installed on the lever group pad 206; the linear guide rail 204 is provided at the other end of the horizontal base 205. The reducer support seat 201 and the hand-cranked lifting platform 207 are slidably provided on the linear guide rail 204, and the hand-cranked lifting platform 207 is located between the reducer support seat 201 and the lever group pad 206, and is provided in front of the hand-cranked lifting platform 207. A reduction motor 202 is provided on the upper part of the reducer support seat 201, and the output shaft of the reduction motor 202 passes through the reducer support seat 201, and the output shaft is connected to the other end of the measured object. A driving rod is arranged at the bottom of the reducer support seat 201 , and a horizontal handwheel 203 is arranged at the end of the driving rod. The horizontal handwheel 203 drives the driving rod to move, thereby driving the reducer support seat 201 to perform linear motion on the linear guide rail 204 .

[0028] A hand wheel is provided on one side of the hand lift 207 for driving the hand lift 207 to rise or fall, and then adjusting the height of the test piece by the hand lift 207. When in use, the test piece is supported by the hand lift 207, and after the two ends are respectively connected to the central axis 104 and the output shaft of the reduction motor 202, the hand lift 207 is lowered and withdrawn.

[0029] like Figure 4 As shown, the lifting mechanism 3 includes a support plate 301, a support plate 302, a servo driver 303, a base 304, a support column 305 and a guide shaft 306. A support column 305 is provided at one end of the base 304, and the support column 305 is arranged in the shell to support the shell and ensure the stability of the shell. A support plate 301 is provided at the upper part of the other end of the base 304, and circular holes are provided at both ends of the support plate 301 for the weight group 103 to pass through the support plate. Located below the support plate 301, vertical slide rails are respectively provided on both sides of the shell, and a slider driven by the servo driver 303 is provided on the vertical slide rail, and a support plate 302 is provided on the slider, and the weight group 103 is supported by the support plate 302. A guide shaft 306 is provided at the end of the support plate 302, and the two ends of the guide shaft 306 are respectively connected to the base 304 and the support plate 301. When in use, the servo driver 303 drives the support plate 302 to move up and down, thereby providing the weight group 103 with lifting power. The servo driver 303 can ensure the accuracy and stability of the position of the weight group 103 each time it is lifted or lowered.

[0030] In summary, the torque reference machine of the present invention can ensure that the torque of the weight group 103 remains unchanged, so as to realize the detection of various portable torque measuring instruments, such as standard torque meter, standard torque wrench, working torque meter and torque wrench; through the setting of lever 101, the detection of all current portable torque measuring instruments can be realized. When in use, the lever weight mechanism 1 is used to load torque, and the horizontal moving mechanism 2 is used to place and connect the measured part; a hand-cranked lifting platform 207 is added, which is suitable for workpieces of various sizes, and the servo driver 303 in the lifting mechanism 3 is used to lift the weight group 103 to load the torque for measurement. The lifting of the weight group 103 adopts a servo single-axis driver to ensure that the weight is lifted and lowered smoothly and accurately each time.

[0031] The above embodiments are only used to illustrate the present invention. The structure, size, location and shape of each component may be changed. On the basis of the technical solution of the present invention, any improvement and equivalent transformation of individual components based on the principle of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A torque reference machine, characterized in that: It includes a shell, and a lever-weight mechanism, a horizontal moving mechanism and a lifting mechanism arranged on the shell; the lever-weight mechanism is arranged on the horizontal moving mechanism, and the lever-weight mechanism is located at one end of the shell, and is used to load torque, and the horizontal moving mechanism is arranged at the other end of the shell, and is used to place and connect the workpiece to be measured, and adjust the workpiece to be measured to be placed horizontally; the lifting mechanism is arranged on both sides of the shell, and is located below the lever-weight mechanism, and is used to lift and lower the weight to load torque for measurement; The lever weight mechanism includes a lever, a steel belt, a weight group, a middle axis, a middle knife holder, an adjusting device, a middle knife and a middle knife support; the two ends of the lever are arranged in an arc-shaped structure, and the center of the arc is located on the blade of the middle knife; the weight group is connected to the two ends of the lever through the steel belt, and a mounting hole is arranged in the middle of the lever. The first end of the middle knife is fixed to one side of the lever through the adjusting device, and the second end of the middle knife passes through the mounting hole and is inserted into the middle knife holder, and the middle knife holder is installed on the other side of the lever; the second end of the middle knife is connected to one end of the middle axis, and the The middle shaft is connected to the middle knife holder through a bearing, and the other end of the middle shaft is connected to one end of the measured piece; the middle knife support is arranged below the mounting hole, and the middle knife support is mounted on the horizontal moving mechanism; the two ends of the middle knife located on both sides of the lever are mounted on the middle knife support and are in line contact with the middle knife support; the adjusting device includes a horizontal adjusting device and a vertical adjusting device; the horizontal adjusting device is arranged on one side of the lever and is connected to the first end of the middle knife; the vertical adjusting device is arranged on the upper part of the lever, passes through the mounting hole and is in vertical contact with the middle knife; The horizontal adjustment device comprises an adjustment bracket, a middle adjustment nut, a middle locking nut and a middle adjustment bolt; one end of the adjustment bracket is connected to the first end of the middle knife, and the other end of the adjustment bracket is connected to the middle adjustment nut, the middle locking nut and the middle adjustment bolt in sequence; The vertical adjustment device includes an upper adjustment nut, an upper adjustment bolt and an upper locking nut; one end of the upper adjustment bolt passes through the upper adjustment nut and the lever in sequence and then vertically contacts the middle knife, and the other end of the upper adjustment bolt is connected to the upper locking nut.

2. The torque reference machine according to claim 1, characterized in that: The lever is provided with a side adjustment bolt, a side adjustment nut and a side locking nut for adjusting the left and right levels of the weight group; the side adjustment bolt passes through the side adjustment nut and is connected to the lever, and the side locking nut is provided at the end of the side adjustment bolt.

3. The torque reference machine according to claim 1, characterized in that: The horizontal moving mechanism includes a reducer support seat, a reduction motor, a horizontal handwheel, a linear guide, a horizontal base, a lever group pad and a hand-cranked lifting platform; the horizontal base is installed on the shell, and the lever group pad is provided at one end of the horizontal base, and the middle knife support is installed on the lever group pad; the linear guide is provided at the other end of the horizontal base, and the reducer support seat and the hand-cranked lifting platform are slidably provided on the linear guide, and the hand-cranked lifting platform is located between the reducer support seat and the lever group pad; the reduction motor is provided on the upper part of the reducer support seat, and the output shaft of the reduction motor passes through the reducer support seat and is connected to the other end of the measured piece; a driving rod is provided at the bottom of the reducer support seat, and the horizontal handwheel is provided at the end of the driving rod, and the horizontal handwheel drives the driving rod to move.

4. The torque reference machine according to claim 3, characterized in that: A hand wheel is arranged on one side of the hand-cranked lifting platform.

5. The torque reference machine according to claim 1, characterized in that: The lifting mechanism includes a support plate, a pallet, a servo drive, a base and a guide shaft; the support plate is arranged on the upper part of the base, and circular holes are arranged at both ends of the support plate for the weight group to pass through the support plate; vertical slide rails are arranged on both sides of the shell below the support plate, and sliders driven by the servo drive are arranged on the vertical slide rails, and the pallet for supporting the weight group is arranged on the slider, and the guide shaft is arranged at the end of the pallet, and the two ends of the guide shaft are respectively connected to the base and the support plate.

6. The torque reference machine according to claim 5, characterized in that: A support column is arranged at one end of the base, and the support column is arranged in the shell.

Images