CN117367249A - Hydraulic coaxiality measurer - Google Patents
Hydraulic coaxiality measurer Download PDFInfo
- Publication number
- CN117367249A CN117367249A CN202311202975.8A CN202311202975A CN117367249A CN 117367249 A CN117367249 A CN 117367249A CN 202311202975 A CN202311202975 A CN 202311202975A CN 117367249 A CN117367249 A CN 117367249A
- Authority
- CN
- China
- Prior art keywords
- piston
- rotating
- hydraulic
- coaxiality
- touch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a hydraulic coaxiality measurer, which comprises a rotating part and a body part, wherein the body part is fixedly arranged in a reference hole of a part to be measured, the rotating part is rotatably connected with the body part, the rotating part comprises a rotating body, a touch piston and a digital display piston, the rotating body is rotatably connected with the body part, a groove is formed in the outer wall of the rotating body, the touch piston is arranged in the groove, a measuring head of the touch piston is contacted with the inner hole wall of the part to be measured, the bottom of the touch piston is connected with one end of a thrust spring, the other end of the thrust spring is fixed at the bottom of the groove, the digital display piston is arranged at one end of the rotating body far away from the body part, hydraulic oil is arranged in the touch piston, and the hydraulic oil is communicated with the digital display piston. When the device is used, the touch piston rotates, and when the two holes to be measured of the part to be measured are not coaxial, the measuring head of the touch piston is pushed by the extrusion force of the inner hole wall to compress the hydraulic oil in the inner cavity, and the extruded hydraulic oil is transmitted to the display digital piston in an equal volume mode to extend and change, so that a measuring result is directly obtained.
Description
Technical Field
The invention relates to a hydraulic coaxiality measurer.
Background
In the machining and detecting of mechanical parts, as shown in fig. 1, three-coordinate detecting equipment is generally adopted for detecting the position degree (the position degree is smaller than phi 0.4 mm) of a hole pitch with higher coaxiality. The three-coordinate detection equipment has the advantages of high use price, low detection efficiency, high environmental sensitivity (the environmental temperature is 20-25 ℃ and no dust is required), and high use cost. The parts produced in batch are generally sampled, so that the quality problem of missing detection and the reduction of production cost are difficult to achieve.
Disclosure of Invention
In order to solve the technical problems, the invention provides the hydraulic coaxiality measurer with simple structure and reliable operation.
The technical scheme for solving the problems is as follows: the utility model provides a hydraulic axiality caliber, includes rotation part and body part, body part is fixed to be set up in the benchmark hole of the part that awaits measuring, rotation part and body part rotatable coupling, rotation part includes rotator, touch piston, shows digital piston, thrust spring, rotator and body part rotatable coupling, open on the rotator outer wall has the groove, is equipped with in the groove and touches the piston, touches the measuring head of piston and the hole wall contact of the part that awaits measuring, touches piston bottom and thrust spring one end and is connected, thrust spring other end is fixed at the tank bottom, the rotator is kept away from the one end of body part and is equipped with and shows digital piston, touches the piston and is equipped with hydraulic oil in the piston, and hydraulic oil and shows digital piston intercommunication.
Above-mentioned hydraulic axiality caliber, body part includes conversion cover, body, the conversion cover is established to one end cover that the rotator was kept away from to the body, and the body passes through the conversion cover to be fixed to be set up in the benchmark hole of the part that awaits measuring, open in the middle of the body has the hole, and the dwang that the rotator extends passes the hole in the middle of the body to through tie bolt and bearing and body coupling, thereby but the rotatory part of mutual independence is formed.
According to the hydraulic coaxiality measurer, the touch piston is a piston with the diameter of D=10mm, and the area of the piston is 10 2 X pi; the display digital piston area is 10 2 X pi/100, i.e. piston diameter d=1 mm.
According to the hydraulic coaxiality measurer, the contact surface of the rotating body and the body is a conical surface, and the conical surface is provided with sliding nylon.
According to the hydraulic coaxiality measurer, when the coaxiality of two holes of the part to be measured is smaller than 0.01mm, the dial indicator is additionally arranged on the outer end part of the display piston, and then the measuring precision can reach 0.0001mm.
The invention has the beneficial effects that: when the device is used, the touch piston rotates, and when the two holes to be measured of the part to be measured are not coaxial, the measuring head of the touch piston is pushed by the extrusion force of the inner hole wall to compress the hydraulic oil in the inner cavity, and the extruded hydraulic oil is transmitted to the display digital piston for elongation change. When the touch piston moves inwards by 0.01mm, the display number piston stretches by 1mm, so that the display number piston plays an amplifying role and is convenient for an operator to read. In order to ensure the accuracy of detection, the hydraulic medium is selected to have certain rigidity and lower thermal expansion rate, and a wear-resistant silica gel sealing ring is adopted for sealing.
Drawings
Fig. 1 is a schematic structural diagram of a part to be tested.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic structural view of a rotating part of the present invention.
Fig. 4 is a schematic structural view of the body portion of the present invention.
Fig. 5 is a measurement schematic of the present invention.
FIG. 6 is a schematic diagram of an additional dial indicator at the outer end of the display piston.
Description of the embodiments
The invention is further described below with reference to the drawings and examples.
As shown in fig. 2-6, a hydraulic coaxiality measurer comprises a rotating part 1 and a body part 2, wherein the body part 2 is fixedly arranged in a reference hole of a part 3 to be measured, the rotating part 1 and the body part 2 are rotatably connected, the rotating part 1 comprises a rotating body 4, a touch piston 5, a digital display piston 6 and a thrust spring 7, the rotating body 4 is rotatably connected with the body part 2, a groove is formed in the outer wall of the rotating body 4, the touch piston 5 is arranged in the groove, a measuring head of the touch piston 5 is in contact with the inner hole wall of the part 3 to be measured, the bottom of the touch piston 5 is connected with one end of the thrust spring 7, the other end of the thrust spring 7 is fixed at the bottom of the groove, the digital display piston 6 is fixedly arranged at one end of the rotating body 4 far away from the body part 2 through a compression bolt 13, hydraulic oil is arranged in the touch piston 5, and the hydraulic oil is communicated with the digital display piston 6.
The body part 2 comprises a conversion sleeve 8 and a body 9, the conversion sleeve 8 is sleeved at one end of the body 9 far away from the rotating body 4, the body 9 is fixedly arranged in a reference hole of the part 3 to be detected through the conversion sleeve 8, the apertures of the reference holes are different when the coaxiality is detected, and the hydraulic coaxiality measurer is positioned in the reference hole through the conversion sleeve 8. The body 9 is provided with a hole in the middle, and a rotating rod extending out of the rotating body 4 passes through the hole in the middle of the body 9 and is connected with the body 9 through a tension bolt 10 and a bearing 11, so that a part capable of rotating independently of each other is formed.
The touch piston 5 adopts a piston with diameter D of phi 1=10mm, and the piston area is 10 2 X pi; the area of the display digital piston 6 is 10 2 X pi/100, i.e. the piston diameter d is phi2=1 mm. When the device is used, the trigger piston 5 rotates, and when the two holes to be measured of the part 3 to be measured are not coaxial (as shown in figure 5), the measuring head of the trigger piston 5 can be pushed by the extrusion force of the inner hole wall to drive the trigger piston 5 to compress the hydraulic oil in the inner cavity, and the extruded hydraulic oil is transmitted to the display number piston 6 in an 'equal volume' mode to change the elongation. When the touch piston 5 moves inwards by 0.01mm, the display piston 6 stretches by 1mm, plays an amplifying role and is convenient for an operator to read.
In order to ensure the accuracy of detection, the hydraulic medium is selected to have certain rigidity and lower thermal expansion rate, and a wear-resistant silica gel sealing ring is adopted for sealing. The contact surface of the rotating body 4 and the body 9 is a conical surface, the rotating part 1 and the body part 2 can influence the movement of the rotating part 1 due to the mutual sliding and rotating movement, and therefore, the sliding nylon 12 is arranged on the conical surface to reduce the friction coefficient.
When the coaxiality of the two holes of the part 3 to be measured is higher (smaller than 0.01 mm), a dial indicator can be additionally arranged on the outer end part of the display piston 6 (as shown in figure 6), and the measuring precision can reach 0.0001mm.
Claims (5)
1. A hydraulic coaxiality measurer comprising a rotary part and a body part, characterized in that: the body part is fixedly arranged in a reference hole of the part to be tested, the rotating part is rotatably connected with the body part, the rotating part comprises a rotating body, a touch piston, a display piston and a thrust spring, the rotating body is rotatably connected with the body part, a groove is formed in the outer wall of the rotating body, the touch piston is arranged in the groove, a measuring head of the touch piston is in contact with the inner hole wall of the part to be tested, the bottom of the touch piston is connected with one end of the thrust spring, the other end of the thrust spring is fixed at the bottom of the groove, the display piston is arranged at one end, far away from the body part, of the rotating body part, hydraulic oil is arranged in the touch piston, and the hydraulic oil is communicated with the display piston.
2. The hydraulic coaxiality measurer according to claim 1, wherein: the body part comprises a conversion sleeve and a body, wherein the body is sleeved with the conversion sleeve at one end far away from the rotating body, the body is fixedly arranged in a reference hole of a part to be tested through the conversion sleeve, a hole is formed in the middle of the body, a rotating rod extending out of the rotating body penetrates through the hole in the middle of the body and is connected with the body through a tension bolt and a bearing, and therefore a part capable of rotating independently is formed.
3. The hydraulic coaxiality measurer according to claim 1, wherein: the touch piston adopts a piston with the diameter of D=10mm, and the piston area is 10 2 X pi; the display digital piston area is 10 2 X pi/100, i.e. piston diameter d=1 mm.
4. The hydraulic coaxiality measurer according to claim 2, wherein: the contact surface of the rotator and the body is a conical surface, and sliding nylon is arranged on the conical surface.
5. The hydraulic coaxiality measurer according to claim 2, wherein: when the coaxiality of two holes of the part to be measured is less than 0.01mm, and the dial indicator is additionally arranged on the outer end part of the display piston, the measuring precision can reach 0.0001mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311202975.8A CN117367249A (en) | 2023-09-18 | 2023-09-18 | Hydraulic coaxiality measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311202975.8A CN117367249A (en) | 2023-09-18 | 2023-09-18 | Hydraulic coaxiality measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117367249A true CN117367249A (en) | 2024-01-09 |
Family
ID=89399245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311202975.8A Pending CN117367249A (en) | 2023-09-18 | 2023-09-18 | Hydraulic coaxiality measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117367249A (en) |
-
2023
- 2023-09-18 CN CN202311202975.8A patent/CN117367249A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201251422Y (en) | Tool for measuring swelling capacity of outer diameter | |
| CN102229041B (en) | Assembly and detection all-in-one machine of rotating support and detecting method thereof | |
| CN108956144B (en) | Device and method for testing temperature rise and static rigidity of modular crossed roller bearing | |
| CN103363935B (en) | Full-automatic worm wheel double-meshing measuring machine | |
| CN107576299B (en) | Detection device for ball screw pair | |
| CN201828362U (en) | Radial force measuring instrument | |
| CN102607375A (en) | Radial play measuring device for bearing | |
| CN116839782B (en) | Torque testing device | |
| CN112556624A (en) | Full-automatic radial clearance detection device for tapered roller bearing retainer | |
| CN112431812A (en) | Lead screw displacement self-detecting hydraulic cylinder | |
| CN112747657B (en) | Bearing clearance detection system and detection method thereof | |
| CN202097543U (en) | Assembly and detection integrative machine for slewing bearing | |
| CN117367249A (en) | Hydraulic coaxiality measurer | |
| CN203744894U (en) | Detector for measuring inner and outer diameters of large-diameter bearing | |
| CN202676119U (en) | Coaxality detector | |
| CN206192645U (en) | Check valve pressure displacement testing device | |
| CN214621585U (en) | Torque wrench detection device | |
| CN113532349B (en) | Construction engineering uses multi-functional measuring tool | |
| CN201461595U (en) | High temperature drilling hydraulic cylinder with displacement transducer | |
| CN212843316U (en) | Long step height measuring tool | |
| CN103791796A (en) | Deep chamber wall thickness measuring device and method | |
| CN219121274U (en) | Angular contact ball bearing inner race rotation accuracy detection device | |
| CN109238537B (en) | Rotary Torque Sensor | |
| CN220583283U (en) | Bearing diameter detection device | |
| CN217878156U (en) | Force standard device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |