Rotor lead measuring instrument and use method thereof
By designing a rotor lead measuring instrument including an inverted V-shaped plate, displacement ruler, vernier and dial meter, the problems of low measurement accuracy, poor efficiency, high cost and inconvenient operation in the prior art are solved, and rotor lead measurement with high accuracy, low cost and convenient operation are achieved.
Patent Information
- Application Number
- CN202411734873.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-28
AI Technical Summary
The prior art has problems such as low measurement accuracy, poor efficiency, high cost and inconvenient operation in rotor lead measurement, which is difficult to promote in a wide range of production environments.
A rotor lead measuring instrument is designed, including an inverted V-plate, displacement ruler, vernier and dial table, to achieve high-precision rotor lead measurement through simple operation steps and economical costs.
High-precision rotor lead measurement is achieved, which avoids artificial reading errors, reduces measurement costs, and simplifies operating steps, suitable for use in a wide range of production environments.
Smart Images
Figure CN119533238A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mechanical measurement, and in particular to a rotor lead measuring instrument and a use method thereof. Background Art
[0002] The screw pump is mainly composed of a rotor and a stator. The rotor is made of metal bar stock through a milling machine and has a spiral shape.
[0003] In the field of mechanical manufacturing, the rotor is a key component of many equipment (such as screw compressors, screw pumps, etc.), and its lead accuracy has a vital impact on the performance of the equipment. There are currently three main measurement methods. The first is the traditional measurement method, which locates the starting point of the rotor lead measurement by visual inspection and measures the lead with a ruler; the second is to use an optical dividing head in conjunction with a longitudinal measuring microscope to measure the rotor lead; the third is to use a projector to illuminate the rotor to obtain a rotor projection, and use a measuring instrument to measure the rotor lead. The first traditional measurement method (such as manual measurement combined with simple measuring tools, etc.) has the problems of low measurement accuracy and poor efficiency. The second and third methods have high measurement accuracy, but there are problems such as cumbersome processes, high measurement costs, and inconvenient operation, which are not conducive to promotion and use in a wide range of production environments.
[0004] In view of the above reasons, it is necessary to further develop a new type of rotor lead measuring instrument that is easy to use, has high measurement accuracy, low cost, and is conducive to promotion. Summary of the invention
[0005] The purpose of the present invention is to provide a rotor lead measuring instrument and a method of using the same in view of the defects in the prior art.
[0006] The technical solution of the present invention is: a rotor lead measuring instrument, including an inverted V-shaped plate for providing a limit for the rotor, a displacement scale, a vernier and a dial indicator, both ends of the inverted V-shaped plate are slidably installed with fixing components for fixing the rotor, and a long through groove is opened on the top of the inverted V-shaped plate along the length direction of the inverted V-shaped plate; the displacement scale is fixed on the inverted V-shaped plate, and the two are arranged in parallel; the vernier is slidably installed on the displacement scale, and a dial indicator fixing seat is installed on the vernier; the dial indicator is vertically installed on the dial indicator fixing seat and is located on the same vertical plane as the center plane of the inverted V-shaped plate, and its measuring head passes through the long through groove.
[0007] Preferably, the fixing assembly includes a clamp, a pull rod, a latch rod, a mounting plate and a clamp bolt, the clamp is slidably mounted on the end of the inverted V-shaped plate, and the two are vertically arranged; the two pull rods slide vertically through the front and rear ends of the clamp, respectively, the upper ends of the two are fixedly connected to the mounting plate, and the lower ends of the two are detachably connected to the two ends of the latch rod; the clamp bolt vertically penetrates the mounting plate and is threadedly connected to the mounting plate, and its lower end is opposite to the top of the clamp.
[0008] Preferably, the lower end of the pull rod is processed with a flat square with a hole, and both ends of the latch rod are processed with grooves with holes adapted to the flat square. The flat square at the lower end of the pull rod is inserted into the groove at the end of the latch rod, and the two are connected together by a pin.
[0009] Preferably, a handle is installed on the inverted V-shaped plate.
[0010] Preferably, the cursor is a digital cursor.
[0011] A method for using a rotor lead measuring instrument comprises the following steps: The first step is to place the rotor whose lead is to be measured under the inverted V-shaped plate, and then fix the rotor by two sets of fixing components; Step 2: Slide the cursor and observe the reading of the dial indicator. When the dial indicator reading reaches the maximum, slide the cursor slightly left and right to confirm that the dial indicator reaches the maximum reading again. At this time, record the cursor reading. The cursor reading is used as the starting value for measuring the rotor lead. Step 3: Slide the cursor to make the dial indicator reach the vicinity of the next high point of the rotor, repeat the process of step 2 to find the high point of the rotor, and record the reading of the cursor at this time. The reading of the cursor is used as the measurement end value of the rotor lead; the end value minus the starting value is the rotor lead measurement value.
[0012] Compared with the prior art, the present invention has the following advantages: The device has a simple overall structure and is convenient to install on a rotor or a related measuring bracket. When the rotor lead measuring instrument is fixed on the rotor, measurement can be performed by simply touching the probe of the dial indicator lightly to the rotor surface, without the need for complicated operating steps and professional technical training.
[0013] Compared with some high-precision electronic measuring instruments or complex measuring equipment, the prices of displacement rulers and dial indicators are relatively low and the cost is more economical.
[0014] The device has high measurement accuracy, and the digital display cursor can accurately convert the position signal into a digital signal and display it, avoiding the problem of inaccurate measurement caused by human reading errors in traditional mechanical measurement. The scale value of the dial indicator is usually 0.01mm, which can accurately measure the slight height changes on the rotor surface, and is very effective for finding the high points with small height differences on the rotor; it can accurately reflect the slight changes in the position of the rotor high point, helping users to accurately locate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 To confirm the starting point of the measurement lead; Figure 3 Schematic diagram for confirming the end point of the measurement lead.
[0016] In the figure: 1, rotor, 2, inverted V-shaped plate, 201, long through slot, 3, displacement ruler, 4, vernier, 5, dial indicator fixing seat, 6, dial indicator, 7, clamp, 8, pull rod, 9, mounting plate, 10, latch rod, 11, clamp bolt, 12, pin, 13, handle. DETAILED DESCRIPTION
[0017] The present invention is further described below with reference to the accompanying drawings and embodiments. Embodiment 1
[0018] Reference Figure 1-3 As shown, a rotor 1 lead measuring instrument includes an inverted V-shaped plate 2 for providing a limit for the rotor 1, a displacement ruler 3, a vernier 4 and a dial indicator 6, both ends of the inverted V-shaped plate 2 are slidably mounted with fixing components for fixing the rotor 1, and a long through slot 201 is opened on the top of the inverted V-shaped plate 2 along the length direction of the inverted V-shaped plate 2; the displacement ruler 3 is fixed on the inverted V-shaped plate 2, and the two are arranged in parallel; the vernier 4 is slidably mounted on the displacement ruler 3, and a dial indicator fixing seat 5 is installed on the vernier 4; the dial indicator 6 is vertically mounted on the dial indicator fixing seat 5 and is located on the same vertical plane as the center plane of the inverted V-shaped plate 2, and its measuring head passes through the long through slot 201.
[0019] In more detail, a handle 13 is installed on the inverted V-shaped plate 2.
[0020] The specific usage is as follows: The first step is to lift the rotor 1 lead measuring instrument using the handle 13 and place it at the position to be measured on the rotor 1 so that the rotor 1 is located below the inverted V-shaped plate 2; Step 2: Fix the rotor 1 by two sets of fixing components; Step 3: Slide cursor 4 and observe the reading of dial indicator 6. When the reading of dial indicator 6 reaches the maximum, slide cursor 4 slightly left and right to confirm that dial indicator 6 reaches the maximum reading again. At this time, record the reading of cursor 4. The reading of cursor 4 is used as the starting value of the lead of rotor 1. Step 4: Slide cursor 4 to make dial indicator 6 reach the vicinity of the next high point of rotor 1, repeat step 3 to find the high point of rotor 1, and record the reading of cursor 4 at this time. The reading of cursor 4 is used as the measurement end point value of the lead of rotor 1; the end point value minus the starting point value is the measured value of the lead of rotor 1. Embodiment 2
[0021] As a preferred embodiment of the present invention, this embodiment designs the fixing component based on the first embodiment, specifically: The fixing assembly of this embodiment includes a clamp 7, a pull rod 8, a latch rod 10, a mounting plate 9 and a clamp bolt 11. The clamp 7 is slidably installed on the end of the inverted V-shaped plate 2, and the two are vertically arranged; the two pull rods 8 vertically slide through the front and rear ends of the clamp 7 respectively, and the upper ends of the two are fixedly connected to the mounting plate 9, and the lower ends of the two are detachably connected to the two ends of the latch rod 10 respectively; the clamp bolt 11 vertically penetrates the mounting plate 9 and is threadedly connected to the mounting plate 9, and its lower end is opposite to the top of the clamp 7.
[0022] In more detail, the lower end of the pull rod 8 is processed with a flat square with a hole, and both ends of the latch rod 10 are processed with grooves with holes that match the flat square. The flat square at the lower end of the pull rod 8 is inserted into the groove at the end of the latch rod 10, and the two are connected together by a pin 12.
[0023] When in use, slide the clamp 7 along the inverted V-shaped plate 2, and align the latch rod 10 with the concave point at the bottom of the rotor 1, and then use the pin 12 to connect the latch rod 10 and the pull rod 8; tighten the clamp bolt 11 to support the clamp 7, and then the pull rod 8 tightens the latch rod 10, so that the latch rod 10 tightens the rotor 1, thereby fixing the rotor 1. Embodiment 3
[0024] As a preferred embodiment of the present invention, this embodiment selects the cursor 4 based on the embodiment 1, specifically: In this embodiment, the cursor 4 is a digital display cursor 4. The digital display cursor 4 can accurately convert the position signal measured by the cursor 4 into a digital signal and display it, avoiding the problem of inaccurate measurement caused by human reading errors in traditional mechanical measurement. Its digital display method is intuitive and clear, with high reading accuracy, which can greatly improve the accuracy of the measurement results.
[0025] In summary, the overall structure of the device is simple and it is convenient to install on the rotor 1 or a related measuring bracket; when the rotor 1 lead measuring instrument is fixed on the rotor 1, the measurement can be performed by simply touching the probe of the dial indicator 6 lightly to the surface of the rotor 1, without the need for complicated operating steps and professional technical training.
[0026] Compared with some high-precision electronic measuring instruments or complex measuring equipment, the price of the displacement ruler 3 and the dial indicator 6 is relatively low and the cost is more economical.
[0027] The device has high measurement accuracy, and the digital display cursor 4 can accurately convert the position signal into a digital signal and display it, avoiding the problem of inaccurate measurement caused by human reading errors in traditional mechanical measurement. The scale value of the dial indicator 6 is usually 0.01mm, which can accurately measure the slight height change of the surface of the rotor 1, and is very effective for finding the high point with a small height difference on the rotor 1; it can accurately reflect the slight change of the high point position of the rotor 1, helping the user to accurately locate.
[0028] The present invention is not limited to the above-mentioned embodiments. Various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention. The changed contents still fall within the protection scope of the present invention.
Claims
1. A rotor lead measuring instrument, characterized in that: It comprises an inverted V-shaped plate for providing a limit for the rotor, a displacement ruler, a vernier and a dial indicator. Both ends of the inverted V-shaped plate are slidably mounted with fixing components for fixing the rotor, and a long through slot is opened on the top of the inverted V-shaped plate along the length direction of the inverted V-shaped plate; the displacement ruler is fixed on the inverted V-shaped plate, and the two are arranged in parallel; the vernier is slidably mounted on the displacement ruler, and a dial indicator fixing seat is installed on the vernier; the dial indicator is vertically mounted on the dial indicator fixing seat and is located on the same vertical plane as the center plane of the inverted V-shaped plate, and its measuring head passes through the long through slot.
2. A rotor lead measuring instrument according to claim 1, characterized in that: The fixing assembly includes a clamp, a pull rod, a latch rod, a mounting plate and a clamp bolt. The clamp is slidably installed on the end of the inverted V-shaped plate, and the two are vertically arranged; the two pull rods slide vertically through the front and rear ends of the clamp respectively, and the upper ends of the two are fixedly connected to the mounting plate, and the lower ends of the two are detachably connected to the two ends of the latch rod respectively; the clamp bolt vertically penetrates the mounting plate and is threadedly connected to the mounting plate, and its lower end is opposite to the top of the clamp.
3. A rotor lead measuring instrument according to claim 2, characterized in that: The lower end of the pull rod is processed with a flat square with a hole, and both ends of the latch rod are processed with grooves with holes that match the flat square. The flat square at the lower end of the pull rod is inserted into the groove at the end of the latch rod, and the two are connected together by a pin.
4. A rotor lead measuring instrument according to claim 1, characterized in that: A handle is installed on the inverted V-shaped plate.
5. A rotor lead measuring instrument according to claim 1, characterized in that: The cursor is a digital display cursor.
6. A method for using a rotor lead measuring instrument according to any one of claims 1 to 5, characterized in that: The following steps are involved: The first step is to place the rotor whose lead is to be measured under the inverted V-shaped plate, and then fix the rotor by two sets of fixing components; Step 2: Slide the cursor and observe the reading of the dial indicator. When the dial indicator reading reaches the maximum, slide the cursor slightly left and right to confirm that the dial indicator reaches the maximum reading again. At this time, record the cursor reading. The cursor reading is used as the starting value for measuring the rotor lead. Step 3: Slide the cursor to make the dial indicator reach the vicinity of the next high point of the rotor, repeat the process of step 2 to find the high point of the rotor, and record the reading of the cursor at this time. The reading of the cursor is used as the measurement end value of the rotor lead; the end value minus the starting value is the rotor lead measurement value.