CN111912323A - Turbine head flatness inspection device - Google Patents
Turbine head flatness inspection device Download PDFInfo
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- CN111912323A CN111912323A CN202010680746.7A CN202010680746A CN111912323A CN 111912323 A CN111912323 A CN 111912323A CN 202010680746 A CN202010680746 A CN 202010680746A CN 111912323 A CN111912323 A CN 111912323A
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- turbine head
- mounting
- flatness
- mounting plate
- measuring device
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- 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
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to the technical field of flatness detection, in particular to a turbine head flatness detection tool. Should examine utensil includes: the device comprises a mounting frame, a rotating mechanism, a flatness measuring device and a mounting mechanism; the mounting mechanism is arranged at the bottom of the mounting frame and used for mounting and fixing the turbine head to be tested; the rotating mechanism is arranged at the upper end of the mounting frame, the flatness measuring device is connected with the rotating mechanism, a measuring part of the flatness measuring device is in contact with a surface to be measured of the turbine head, and the rotating mechanism is used for driving the flatness measuring device to rotate, so that the measuring part slides around a circumference on the surface to be measured of the turbine head, and the flatness of each measuring point of the surface to be measured in the circumferential direction is measured. By adopting the checking fixture, the detection speed of the turbine head flatness is improved, and the flatness measurement on the circumferential direction of the surface to be measured of the turbine head can be performed, so that the requirement of the turbine head flatness measurement is met.
Description
Technical Field
The invention relates to the technical field of flatness detection, in particular to a turbine head flatness detection tool.
Background
The turbine head is an important part connected with the milling head part on the milling machine, and the working plane of the turbine head is attached to the working plane of the milling head. The turbine head has larger planeness tolerance, so that a clearance exists on a binding surface, vibration can be caused in the machining process of the milling machine, the cutter is stressed unevenly, the machining precision is reduced, and the service life of the machine tool is shortened. At present, the turbine head is detected by installing the turbine head on a milling machine, sucking a dial indicator on a workbench, and detecting the precision of the turbine head through the movement of the workbench.
Disclosure of Invention
The invention mainly solves the technical problems that the turbine head detection method in the prior art is low in efficiency and cannot detect the flatness of the whole turbine head disk surface in the circumferential direction.
A turbine head flatness inspection device is characterized by comprising: the device comprises a mounting frame, a rotating mechanism, a flatness measuring device and a mounting mechanism;
the mounting mechanism is arranged at the bottom of the mounting rack and used for mounting and fixing the turbine head to be tested; the plane degree measuring device is detachably connected with the rotating mechanism, a measuring part of the plane degree measuring device is in contact with a surface to be measured of the turbine head, and the rotating mechanism is used for driving the plane degree measuring device to rotate so that the measuring part slides around a circumference on the surface to be measured of the turbine head to measure the plane degree of each measuring point of the surface to be measured in the circumferential direction.
In an embodiment, still include slide mechanism, slide mechanism installs on the mounting bracket, flatness measuring device with slide mechanism is detachable to be connected, flatness measuring device's measuring part with the face contact that awaits measuring of turbine head, slide mechanism is used for driving flatness measuring device is in along radial sliding on the turbine head face that awaits measuring to measure the difference in height between turbine head inner circle plane and the outer lane plane.
In one embodiment, the flatness measuring device is a dial indicator or a dial indicator, and the measuring part of the flatness measuring device is a measuring rod of the dial indicator or the dial indicator.
In one embodiment, the dial indicator or the dial indicator comprises an indicator body and a flexible connecting piece, one end of the flexible connecting piece is detachably connected with the rotating mechanism or the sliding mechanism, the other end of the flexible connecting piece is connected with the indicator body, and the flexible connecting piece is adjusted to be used for adjusting the pose of the indicator body.
In one embodiment, the rotating mechanism comprises a rotating shaft, a mounting cylinder, a connecting block and at least one bearing;
the installation barrel is installed the upper end of mounting bracket, the bearing is installed in the installation barrel and the outer lane of bearing with installation barrel fixed connection, the pivot is connected with the inner circle of bearing, the connecting block sets up the lower extreme of pivot, the connecting block be used for with the detachable connection of flatness measuring device.
In one embodiment, the sliding mechanism includes a slide rail and a slider, the slide rail is disposed at the upper end of the mounting rack, the slider is mounted on the slide rail and slidably connected to the slide rail, and the flatness measuring device is detachably connected to the slider.
In one embodiment, the mounting mechanism comprises a first mounting plate, a mounting shaft and at least one pressing member, the first mounting plate is vertically arranged, the mounting shaft is horizontally arranged, one end of the mounting shaft is fixed on the first mounting plate, the mounting shaft is used for being sleeved in a shaft hole in the horizontal direction of the turbine head, and the side surface, close to the turbine head, of the first mounting plate is used for forming a first limiting surface to limit the turbine head in the horizontal direction; the compressing piece is arranged on the mounting frame and/or the first mounting plate and used for limiting the turbine head in the horizontal direction after the turbine head is sleeved on the mounting shaft.
In one embodiment, the mounting mechanism further comprises a second mounting plate and at least three adjusting pieces, wherein the second mounting plate is horizontally arranged at the bottom of the mounting frame through the adjusting pieces, and the adjusting pieces are used for adjusting the levelness of the second mounting plate; the first mounting plate is vertically arranged on the upper surface of the second mounting plate.
In one embodiment, the mounting mechanism further comprises a third mounting plate and a fourth mounting plate, the third mounting plate and the fourth mounting plate are vertically arranged on the second mounting plate, and the two pressing members are respectively arranged on the third mounting plate and the fourth mounting plate and used for respectively pressing two sides of the turbine head to fix the turbine head after the turbine head is sleeved on the mounting shaft.
In one embodiment, the flatness measuring device comprises a connecting plate, and the connecting plate are both magnetic pieces; or one of the connecting plate and the connecting block is a magnetic part, and the other one is a metal part which can be attracted by the magnetic part.
According to utensil is examined to turbine head flatness of above-mentioned embodiment, it includes: the device comprises a mounting frame, a rotating mechanism, a flatness measuring device and a mounting mechanism; the mounting mechanism is arranged at the bottom of the mounting frame and used for mounting and fixing the turbine head to be tested; the rotating mechanism is arranged at the upper end of the mounting frame, the flatness measuring device is connected with the rotating mechanism, a measuring part of the flatness measuring device is in contact with a surface to be measured of the turbine head, and the rotating mechanism is used for driving the flatness measuring device to rotate, so that the measuring part slides around a circumference on the surface to be measured of the turbine head, and the flatness of each measuring point of the surface to be measured in the circumferential direction is measured. By adopting the checking fixture, the detection speed of the turbine head flatness is improved, and the flatness measurement on the circumferential direction of the surface to be measured of the turbine head can be performed, so that the requirement of the turbine head flatness measurement is met.
Drawings
FIG. 1 is a working state of a turbine head flatness inspection device according to an embodiment of the application;
FIG. 2 is a schematic structural view of a turbine head flatness inspection tool according to an embodiment of the present application;
FIG. 3 is a front view of a turbine head flatness inspection fixture according to an embodiment of the present application;
fig. 4 is a cross-sectional view of a rotary mechanism according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a pressing member according to an embodiment of the present application;
FIG. 6 is a schematic view of the compressing member of the embodiment of the present application in an uncompressed state;
fig. 7 is a schematic view of a pressing state of the pressing member according to the embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning.
The first embodiment is as follows:
referring to fig. 1 to 3, the present embodiment provides a turbine head flatness inspection device, which includes: mounting bracket 1, rotary mechanism, flatness measuring device and installation mechanism. The mounting mechanism is arranged at the bottom of the mounting frame 1 and used for detachably mounting and fixing the turbine head 6 to be tested; the rotating mechanism is arranged at the upper end of the mounting frame 1, the flatness measuring device is detachably connected with the rotating mechanism, a measuring part of the flatness measuring device is in contact with the surface to be measured 61 of the turbine head 6, and the rotating mechanism is used for driving the flatness measuring device to rotate, so that the measuring part slides around a circumference on the surface to be measured 61 of the turbine head 6, and the flatness of each measuring point of the surface to be measured 61 in the circumferential direction is measured. Therefore, the flatness of the inner ring and the outer ring of the surface to be measured 61 of the turbine head 6 in the circumferential direction can be detected, and if the flatness measuring device rotates in a circle and the measured flatness values are within a preset error range, the flatness of the inner ring and the flatness of the outer ring of the turbine head in the circumferential direction are confirmed to meet the requirement. By adopting the device of the embodiment, the flatness measuring device does not need to be manually adjusted when the flatness in the circumferential direction is measured, and the flatness measuring device can move along a circle on a horizontal plane under the driving of the rotating mechanism, so that the measuring precision is ensured.
Further, the detecting tool further comprises a sliding mechanism, the flatness measuring device is detachably connected with the sliding mechanism, a measuring part of the flatness measuring device is in contact with a surface 61 to be measured of the turbine head 6, and the sliding mechanism is used for driving the flatness measuring device to slide on the surface to be measured of the turbine head along a radial direction so as to measure the height difference between the inner ring plane and the outer ring plane of the turbine head and confirm whether the height difference between the inner ring and the outer ring of the turbine head 6 meets the requirement of production precision.
By adopting the checking fixture of the embodiment, the flatness measuring device and the rotating mechanism can be connected firstly to measure the flatness in the circumferential direction, after the measurement is completed, the flatness measuring device and the rotating mechanism are disassembled, and the flatness measuring device is connected with the sliding mechanism to measure the height difference between the inner ring plane and the outer ring plane of the turbine head. The turbine head 6 does not need to be adjusted in the whole process, and the measuring efficiency is improved.
Preferably, the flatness measuring device of this embodiment uses a dial indicator or a dial indicator, the measuring portion of the flatness measuring device is a measuring rod of the dial indicator or the dial indicator, the measuring rod is in contact with the surface to be measured, and when the measuring rod rotates circumferentially or moves along a radial direction, if the flatness has a difference, the dial indicator or the dial indicator can accurately measure the deviation value.
Specifically, the dial indicator or the dial indicator of the present embodiment includes an indicator body 51 and a flexible connecting member 52 (which may also be understood as an indicator base), one end of the flexible connecting member 52 is connected to the rotating mechanism or the sliding mechanism, and the other end is connected to the indicator body 51, and the pose of the indicator body 51 can be adjusted by adjusting the flexible connecting member 52. For example, after the flatness of the outer ring of the turbine head 6 is measured, the flexible connecting piece 52 is adjusted to make the measuring rod of the dial indicator contact with the upper surface of the inner ring, and the flatness of the inner ring can be measured under the driving of the rotating mechanism.
Specifically, as shown in fig. 4, the rotating mechanism of this embodiment includes a rotating shaft 22, an installation cylinder 21, a connection block 23, and at least one bearing 24 (two in this embodiment), the installation cylinder 21 is installed on the upper installation plate 11 of the installation frame 1, the bearing 24 is installed in the installation cylinder 21, an outer ring of the bearing 24 is fixedly connected to the installation cylinder 21, the rotating shaft 22 is connected to an inner ring of the bearing 24, the connection block 23 is disposed at a lower end of the rotating shaft 22, and the connection block 23 is detachably connected to an upper end of the flexible connection member 52.
The sliding mechanism of the embodiment comprises a sliding rail 31 and a sliding block 32, the sliding rail 31 is arranged on the side surface of the upper mounting plate 11 of the mounting rack, the sliding block 32 is installed on the sliding rail 31 in a limiting manner and is connected with the sliding rail 31 in a sliding manner, the sliding block 32 can slide along the axial direction of the sliding rail 31, and the sliding block 32 is detachably connected with the upper end of the flexible connecting piece 52.
In this embodiment, a magnetic connection plate or a connection plate capable of being magnetically attracted is disposed at the upper end of the flexible connection member 52, and the connection block 23 and the slider 32 are made of a magnetic material, so that the connection plate and the connection block 23 or the connection plate and the connection block 23 can be magnetically attracted together to realize detachable connection.
In one embodiment, for example, a connecting plate is provided at the upper end of the flexible connecting member 52, and connecting holes are provided on the connecting plate, the connecting block 23 and the sliding block 32, which are detachably connected by a connecting member (e.g., a bolt).
The installation mechanism of this embodiment includes first mounting panel 41, installation axle 42 and two compressing tightly 46, the vertical setting of first mounting panel 41, installation axle 42 level setting and one end are fixed on first mounting panel 41, installation axle 42 is used for the suit in the shaft hole of turbine head 6 side 62, the side that is close to turbine head 6 on the first mounting panel 41 is used for forming first spacing face, carry out spacing on the horizontal direction to turbine head 6, make turbine head 6 install the one side after on installation axle 42 laminate with first mounting panel 41 side, play stable limiting displacement. In one embodiment, a pressing member 46 may be disposed on the mounting bracket 1 and/or the first mounting plate 41, and the pressing member 46 is used for pressing the turbine head 6 to horizontally limit the turbine head 6 after the turbine head 6 is sleeved on the mounting shaft 42.
In the embodiment, the mounting mechanism further comprises a second mounting plate 43 and three adjusting members 44, the second mounting plate 43 is horizontally arranged on the mounting base plate 12 of the mounting frame 1 through the adjusting members 44, the first mounting plate 41 is vertically arranged on the upper surface of the second mounting plate 43, and the adjusting members 44 are used for adjusting the levelness of the second mounting plate 43, so that the second mounting plate 43 is in a horizontal state, and after the pressing member 46 is mounted, the upper end of the pressing member 61 is in a horizontal state, so that the measuring accuracy is ensured. The adjustment member 44 of the present embodiment is an adjustment bolt.
The mounting mechanism of the embodiment further comprises a third mounting plate 45 and a fourth mounting plate 47, wherein the third mounting plate 45 and the fourth mounting plate 47 are vertically arranged on the second mounting plate 43, and two pressing pieces 46 are respectively arranged on the third mounting plate 45 and the fourth mounting plate 47 and used for respectively pressing two sides of the turbine head 6 after the turbine head 6 is sleeved on the mounting shaft 42 so as to fix the turbine head 6.
As shown in fig. 5, the pressing member 46 of the present embodiment includes a hinge base 461, a pressing handle 462, a movable member 463 and a rubber block 464, wherein the pressing handle 462 and the movable member 463 are both mounted on the hinge base 461 and hinged to the hinge base 461, the pressing handle 462 and the movable member 463 are connected and interlocked, the rubber block 464 is disposed on the movable member 463, the hinge base 461 is fixed on the third mounting plate 45 and the fourth mounting plate 47, the non-pressing state is shown in fig. 6, after the turbine head 6 is mounted on the mounting shaft 42, as shown in fig. 7, after pressing the pressing handle 462 thereof, the pressing handle 462 and the movable member 463 are substantially in a straight line, and at this time, the rubber block 464 is perpendicular to the side surface of the turbine head 6, so as to press the turbine head 6.
Further, in another embodiment, the testing fixture further comprises a level gauge for assisting in adjusting the turbine head 6 to be in a horizontal state.
The use method of the gauge of the embodiment is as follows:
after the turbine head 6 is fixed on the mounting mechanism, the adjusting piece 44 is adjusted to enable the surface 61 to be measured of the turbine head 6 to be in a horizontal state, namely, when the dial indicator detects that the levelness of four points at 90-degree intervals in the circumferential direction of the surface 61 to be measured is the same, the turbine head 6 is adjusted to be horizontal.
Make the measuring stick of amesdial and the contact of turbine head 6 outer lane through adjustment flexible connector 52, rotate pivot 22 and drive the amesdial and do circular motion, accomplish the measurement of outer lane plane degree, then adjustment flexible connector 52 makes the measuring stick of amesdial and the contact of turbine head 6 inner circle, rotates pivot 22 and drives the amesdial and do circular motion, accomplishes the measurement of inner circle plane degree.
The upper end of the flexible connecting piece 52 is taken down from the connecting block 23 last time, the flexible connecting piece is attracted with the sliding block 32, the movement direction of the dial indicator is adjusted by adjusting the flexible connecting piece 52, the sliding block 32 is slid to drive the dial indicator to move along one radial direction of the turbine head 6, and the height difference between the inner ring plane and the outer ring plane of the turbine head is measured.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A turbine head flatness inspection device is characterized by comprising: the device comprises a mounting frame, a rotating mechanism, a flatness measuring device and a mounting mechanism;
the mounting mechanism is arranged at the bottom of the mounting rack and used for mounting and fixing the turbine head to be tested; the plane degree measuring device is detachably connected with the rotating mechanism, a measuring part of the plane degree measuring device is in contact with a surface to be measured of the turbine head, and the rotating mechanism is used for driving the plane degree measuring device to rotate so that the measuring part slides around a circumference on the surface to be measured of the turbine head to measure the plane degree of each measuring point of the surface to be measured in the circumferential direction.
2. The turbine head flatness detection tool of claim 1, further comprising a sliding mechanism, the sliding mechanism being mounted on the mounting bracket, the flatness measurement device being detachably connected to the sliding mechanism, a measurement portion of the flatness measurement device being in contact with a surface to be measured of the turbine head, the sliding mechanism being configured to drive the flatness measurement device to slide in a radial direction on the surface to be measured of the turbine head, so as to measure a difference in height between an inner ring plane and an outer ring plane of the turbine head.
3. The turbine head flatness inspection tool of claim 2, wherein the flatness measuring device is a dial indicator or a dial indicator, and the measuring portion of the flatness measuring device is a measuring rod of the dial indicator or the dial indicator.
4. The turbine head flatness detection tool according to claim 3, wherein the dial indicator or the dial indicator includes an indicator body and a flexible connection member, one end of the flexible connection member is detachably connected to the rotating mechanism or the sliding mechanism, the other end of the flexible connection member is connected to the indicator body, and the flexible connection member is adjusted to adjust the pose of the indicator body.
5. The turbine head flatness inspection fixture of claim 1, wherein the rotation mechanism includes a spindle, a mounting cylinder, a connection block, and at least one bearing;
the installation barrel is installed the upper end of mounting bracket, the bearing is installed in the installation barrel and the outer lane of bearing with installation barrel fixed connection, the pivot is connected with the inner circle of bearing, the connecting block sets up the lower extreme of pivot, the connecting block be used for with the detachable connection of flatness measuring device.
6. The turbine head flatness detection fixture of claim 2, wherein the sliding mechanism includes a slide rail and a slider, the slide rail is disposed at an upper end of the mounting bracket, the slider is mounted on the slide rail and slidably connected to the slide rail, and the flatness measuring device is detachably connected to the slider.
7. The turbine head flatness inspection device of claim 6, wherein the mounting mechanism includes a first mounting plate, a mounting shaft and at least one pressing member, the first mounting plate is vertically disposed, the mounting shaft is horizontally disposed, one end of the mounting shaft is fixed on the first mounting plate, the mounting shaft is used for being sleeved in a shaft hole of the turbine head in the horizontal direction, and a side surface of the first mounting plate close to the turbine head is used for forming a first limiting surface to limit the turbine head in the horizontal direction; the compressing piece is arranged on the mounting frame and/or the first mounting plate and used for limiting the turbine head in the horizontal direction after the turbine head is sleeved on the mounting shaft.
8. The turbine head flatness inspection fixture of claim 7, wherein said mounting mechanism further includes a second mounting plate horizontally disposed at a bottom of said mounting frame through said adjustment member and at least three adjustment members for adjusting a levelness of said second mounting plate; the first mounting plate is vertically arranged on the upper surface of the second mounting plate.
9. The turbine head flatness inspection device of claim 8, wherein said mounting mechanism further includes a third mounting plate and a fourth mounting plate, said third mounting plate and said fourth mounting plate are vertically disposed on said second mounting plate, said pressing members include two, said two pressing members are respectively disposed on said third mounting plate and said fourth mounting plate, and are used for respectively pressing two sides of said turbine head to fix said turbine head after said turbine head is sleeved on said mounting shaft.
10. The turbine head flatness inspection fixture of claim 5, wherein the flatness measuring device includes a connection plate, both the connection plate and the connection plate being magnetic members; or one of the connecting plate and the connecting block is a magnetic part, and the other one is a metal part which can be attracted by the magnetic part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680746.7A CN111912323A (en) | 2020-07-15 | 2020-07-15 | Turbine head flatness inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680746.7A CN111912323A (en) | 2020-07-15 | 2020-07-15 | Turbine head flatness inspection device |
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| Publication Number | Publication Date |
|---|---|
| CN111912323A true CN111912323A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010680746.7A Pending CN111912323A (en) | 2020-07-15 | 2020-07-15 | Turbine head flatness inspection device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061833A (en) * | 2014-07-02 | 2014-09-24 | 无锡烨隆精密机械有限公司 | Location degree detection tool of turbocharger turbine casing |
| CN204064217U (en) * | 2014-08-08 | 2014-12-31 | 宝钢特钢有限公司 | A kind of guide plate flatness pick-up unit |
| CN204183264U (en) * | 2014-09-19 | 2015-03-04 | 广东明杰零部件再制造有限公司 | Fixture repaired by turbine case air inlet |
| CN204666086U (en) * | 2015-06-16 | 2015-09-23 | 浙江中烟工业有限责任公司 | A kind of cigarette bobbin paper end face flatness determinator |
| CN208505226U (en) * | 2018-07-23 | 2019-02-15 | 中国石油化工股份有限公司 | Planeness of flange measuring tool |
| CN209878676U (en) * | 2019-03-28 | 2019-12-31 | 浙江大学 | Internal defect extension detection device for turbine engine rotor |
| CN209945185U (en) * | 2019-05-28 | 2020-01-14 | 上海良基博方汽车发动机零部件制造股份有限公司 | Single-flow-channel turbine shell comprehensive inspection gauge |
-
2020
- 2020-07-15 CN CN202010680746.7A patent/CN111912323A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061833A (en) * | 2014-07-02 | 2014-09-24 | 无锡烨隆精密机械有限公司 | Location degree detection tool of turbocharger turbine casing |
| CN204064217U (en) * | 2014-08-08 | 2014-12-31 | 宝钢特钢有限公司 | A kind of guide plate flatness pick-up unit |
| CN204183264U (en) * | 2014-09-19 | 2015-03-04 | 广东明杰零部件再制造有限公司 | Fixture repaired by turbine case air inlet |
| CN204666086U (en) * | 2015-06-16 | 2015-09-23 | 浙江中烟工业有限责任公司 | A kind of cigarette bobbin paper end face flatness determinator |
| CN208505226U (en) * | 2018-07-23 | 2019-02-15 | 中国石油化工股份有限公司 | Planeness of flange measuring tool |
| CN209878676U (en) * | 2019-03-28 | 2019-12-31 | 浙江大学 | Internal defect extension detection device for turbine engine rotor |
| CN209945185U (en) * | 2019-05-28 | 2020-01-14 | 上海良基博方汽车发动机零部件制造股份有限公司 | Single-flow-channel turbine shell comprehensive inspection gauge |
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Application publication date: 20201110 |