Hand-held roundness detection tool
Technical Field
The utility model relates to the technical field of machining detection, in particular to a handheld roundness detection tool.
Background
The machining precision requirement of the rotor shaft diameter of the rotary machine is high, and particularly the roundness requirement of the shaft diameter blocking area is high. The conventional detection mode is to use a disc indicator to measure mechanical runout to reflect the roundness of the rotor, and after the rotor is processed on a processing machine tool according to the standard, the rotor needs to be measured on a device (a V-shaped frame) independent of the machine tool for executing the processing task, so that errors caused by the processing machine tool are avoided from being shielded. As the size and weight of the rotor become larger, the operation and efficiency of the standard recommended "V-frame" detection method are difficult to meet the requirements of production and manufacture, and the accuracy of detection is difficult to ensure.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a handheld roundness detection tool which can detect the roundness of shaft parts.
The utility model adopts the following technical scheme:
the utility model provides a hand-held type circularity testing tool, is including wholly being curved chi frame, chi frame one end is equipped with the percentage table, and the other end is equipped with length adjustment subassembly, location anvil and mounting, length adjustment subassembly includes a plurality of length adjustment piece, and location anvil includes anvil head and connecting rod, the connecting rod passes a plurality of length adjustment piece and is connected with the mounting.
Preferably, the two ends of the ruler frame are respectively provided with a first mounting ring and a second mounting ring, the first mounting ring is in sliding fit with a dial indicator, and the second mounting ring is provided with a positioning anvil.
Preferably, a locking assembly for locking the dial indicator is arranged on the first mounting ring.
Preferably, one end of the connecting rod is provided with a threaded part, and the fixing piece is a locking nut.
Compared with the prior art, the utility model has the following advantages: the utility model provides a handheld roundness detection tool which comprises a ruler frame which is arc-shaped as a whole, wherein one end of the ruler frame is provided with a dial indicator, the other end of the ruler frame is provided with a length adjusting assembly, a positioning anvil and a fixing piece, the positioning anvil is abutted to the surface of a part, and the roundness of shaft parts is detected through the dial indicator.
Drawings
Fig. 1 is a front view of a hand-held roundness detection tool.
Fig. 2 is a perspective view of a hand-held roundness detection tool.
Fig. 3 is a schematic diagram of a structure for positioning an anvil.
Fig. 4 is a schematic structural view of one end of the frame.
Fig. 5 is a schematic structural view of the first mounting ring.
Fig. 6 is a schematic structural view of the locking assembly.
In the drawing, a scale 1, a first mounting ring 11, a notch 111, a second mounting ring 12, a fixing member 2, a length adjusting unit 3, a length adjusting block 31, a positioning anvil 4, an anvil head 41, a connecting rod 42, a screw portion 43, a dial indicator 5, a measuring head 51, a locking unit 6, a locking bolt 61, and a locking ring 62.
Detailed Description
In order to facilitate understanding of the technical scheme of the present utility model, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-6, a handheld roundness detection tool comprises a ruler frame 1 with an arc shape as a whole, wherein one end of the ruler frame 1 is provided with a dial indicator 5, and the other end is provided with a length adjustment assembly 3, a positioning anvil 4 and a fixing piece 2;
As shown in fig. 3, the length adjusting assembly 3 includes a plurality of length adjusting blocks 31, the positioning anvil 4 includes an anvil head 41 and a connecting rod 42, and the connecting rod 42 passes through the plurality of length adjusting blocks 31 and is connected with the fixing member 2.
In this embodiment, as shown in fig. 4-6, taking 3 length adjusting blocks 31 as an example for illustration, two ends of the scale frame 1 are respectively provided with a first mounting ring 11 and a second mounting ring 12, the first mounting ring 11 is slidably matched with the dial indicator 5, the first mounting ring 11 is provided with a locking component 6 for locking the dial indicator 5, the first mounting ring 11 is provided with a locking end, the locking end is provided with a slot 111, the locking component 6 comprises a locking bolt 61 and a locking ring 62, the locking ring 62 is sleeved outside the slot 111, a sleeve of the dial indicator 5 passes through the first mounting ring 11, the locking ring 62 is provided with a threaded hole, the locking bolt 61 is installed in the threaded hole and is pressed on the locking end to lock the sleeve of the dial indicator 5.
The locking assembly 6 is a locking bolt, the locking bolt is arranged in the threaded hole and abuts against the sleeve of the dial indicator 5, and the measuring head 51 of the dial indicator 5 can move in the sleeve to measure the parts.
As shown in fig. 1-2, the second mounting ring 12 is provided with a positioning anvil 4, a connecting rod 42 of the positioning anvil 4 is located on the second mounting ring 12, 1 length adjusting block 31 is arranged on the left side of the second mounting ring 12, 2 length adjusting blocks 31 are arranged on the right side of the second mounting ring 12, one end of the connecting rod 42 is provided with a threaded portion 43, and the fixing piece 2 is a locking nut, and the positioning anvil 4 and the length adjusting blocks 31 are locked through the locking nut. When the position of the positioning anvil 4 needs to be adjusted, the locking nut is removed, the number of the length adjusting blocks 31 on the left side and the right side of the second mounting ring 12 is adjusted, and then the locking is performed through the locking nut.
When the roundness of the excircle of the shaft is detected, firstly, a proper length adjusting assembly 3 is selected for installation according to the size of the excircle of the shaft to be detected; after the installation, firstly drawing a measurement datum line on the excircle of the measured shaft, selecting a measurement starting point, and placing a positioning anvil 4 on the measurement datum line (the excircle of the positioning anvil 4 is tangent with the datum line); lightly moving the scale frame 1 at the other side of the excircle measurement starting point to enable the measuring head 51 of the dial indicator 5 to find the highest point on the surface of the measured workpiece, and adjusting the dial indicator 5 to a zero position at the position; and then sequentially reading and recording the readings of the dial indicators 5 at each position according to the measurement requirement (for example, 15 DEG is used as an interval), and finally finding out the maximum value and the minimum value according to the readings of the dial indicators 5, wherein the difference value of the maximum value and the minimum value is the roundness of the excircle at the position.
The foregoing is merely a preferred embodiment of the present utility model, and the scope of the utility model is defined by the claims, and those skilled in the art should also consider the scope of the present utility model without departing from the spirit and scope of the utility model.