CN113418435B - Device and method for testing parallelism of winding wheel - Google Patents
Device and method for testing parallelism of winding wheel Download PDFInfo
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- CN113418435B CN113418435B CN202110971719.XA CN202110971719A CN113418435B CN 113418435 B CN113418435 B CN 113418435B CN 202110971719 A CN202110971719 A CN 202110971719A CN 113418435 B CN113418435 B CN 113418435B
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- 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
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Abstract
The invention provides a device and a method for testing the parallelism of a winding wheel, wherein the device comprises a base, a sliding rail is arranged on the base, a fixed seat is fixedly connected with the base, the fixed seat and the sliding rail are positioned above the base, the direction of the fixed seat close to the sliding rail is marked as front A, a rotating shaft is arranged on the fixed seat, and the rotating shaft penetrates through the front side surface and the rear side surface of the fixed seat; the sliding direction on the slide rail is X, the axis of the rotating shaft is Y, X is perpendicular to Y, the winding wheel comprises two limiting discs and a connecting shaft, one end of the connecting shaft is connected with one limiting disc, the other end of the connecting shaft is connected with the other limiting disc, the front end of the rotating shaft is sleeved with the two limiting discs and the connecting shaft, the winding wheel is located on the front side of the fixing base, the winding wheel is located right above the slide rail, the testing assembly is arranged at the lower end of the testing assembly and is in sliding connection with the slide rail, and the testing assembly is used for measuring the parallelism between the two limiting discs. By using the method and the device, the comprehensiveness and the accuracy of the testing of the parallelism of the reel can be improved.
Description
Technical Field
The invention relates to the technical field of winding wheels, in particular to a winding wheel parallelism testing device and method.
Background
The Carrier Tape (Carrier Tape) is a Tape-shaped product used in the field of electronic packaging, and has a specific thickness, and holes for receiving electronic components and positioning holes for indexing are equidistantly distributed in the length direction of the Tape-shaped product.
The COF (chip on film) is called chip on film, and the display driving chip is directly mounted on the flexible circuit board without any packaging form, so as to achieve the purposes of reducing volume and freely bending. The COF flexible packaging carrier tape is a flexible circuit board for connecting a semiconductor display chip and a terminal product and is a key material in a COF packaging link; the COF package display driving chip is mainly applied to display screens of products such as televisions, computers, mobile phones and the like at present, and is one of key core chips of LCD/OLED display screens.
In the production process of the COF flexible packaging carrier tape, a reel is needed, and a strip-shaped product is wound on the reel and is transferred to the next production link or is stored. The reel structure generally comprises two limiting discs and a connecting shaft, one end of the connecting shaft is connected with one limiting disc, and the other end of the connecting shaft is connected with the other limiting disc. When the winding wheel is used for collecting materials, the material belt is wound on the connecting shaft, the two limiting discs can limit the material belt to be wound, and the situation that the collected materials cannot be misplaced is guaranteed. In order to ensure that the material is not received in a dislocation manner, the parallelism of the two limiting discs is required to be detected. The current detection mode is to detect the distance between two limiting discs by using a vernier caliper, but the vernier caliper can only detect the distance between two points at each time, and the whole parallelism of the winding wheel can be measured only by performing multiple operations, so that the method is time-consuming, labor-consuming and easy to have errors, and the detected position is not comprehensive enough, for example, the position close to the center of the winding wheel can not be detected by using the vernier caliper.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problems that in the prior art, the testing time is long, the testing is incomplete and inaccurate in a mode of detecting the parallelism between two limiting disks of a reel are solved. The invention provides a device and a method for testing the parallelism of a winding wheel.
The technical scheme adopted by the invention for solving the technical problems is as follows: a reel parallelism testing apparatus, comprising: the base is provided with a slide rail, a fixed seat is fixedly connected with the base, the fixed seat and the slide rail are positioned above the base, the direction of the fixed seat close to the slide rail is marked as front A, and a rotating shaft is arranged on the fixed seat and penetrates through the front side surface and the rear side surface of the fixed seat; the last slip direction of slide rail is X, the axis of pivot is Y, and X is perpendicular with Y, and the winding wheel, the winding wheel include two spacing dishes and connecting axle, the one end and one of connecting axle spacing dish is connected, the other end and another of connecting axle spacing dish is connected, two spacing dishes all overlap with the connecting axle and are established the front end of pivot, the winding wheel is located the front side of fixing base, just the winding wheel is located directly over the slide rail, test component's lower extreme with slide rail sliding connection, test component is used for measuring depth of parallelism between two spacing dishes.
According to the roller parallelism testing device, the roller is fixed on the rotating shaft, the testing component slides to the position between the two limiting discs, and the rotating shaft is rotated to enable the roller to rotate to carry out the flatness test. The invention can comprehensively detect the parallelism between the two limiting disks and can improve the accuracy and efficiency of detection.
Further, still include the handle, the handle with the rear end of pivot is connected, just the handle is located the rear side of fixing base. When the handle rotates, the rotating shaft can be driven to rotate, and then the rolling wheel is driven to rotate by the rotation of the rotating shaft.
Furthermore, the limiting disc comprises a central circular plate, a supporting rib and an annular plate, one end of the supporting rib is connected with the central circular plate, the other end of the supporting rib is connected with the annular plate, and the area between the outer circumference of the central circular plate and the inner circumference of the annular plate is W.
Further, in order to detect the parallelism between the two limiting discs more comprehensively, the testing assembly comprises a testing block, a first testing sheet and a second testing sheet, the first testing sheet is fixed on the front side surface of the testing block, the second testing sheet is fixed on the rear side surface of the testing block, the height of the testing block is H1, the heights of the first testing sheet and the second testing sheet are both H2, and the height H1 is greater than the height H2; when the testing component tests the parallelism of the two limiting discs, the testing block is positioned between the two areas W, and the first testing piece and the second testing piece are both positioned between the annular plates.
Further, in order to detect the parallelism between the two limiting discs more accurately, the front side face and the back side face of the testing block are kept parallel, and the front side face of the first testing sheet is kept parallel to the back side face of the second testing sheet.
Further, the height H2 is 1/4-2/5 of the height H1. If the height H2 is too small, the parallelism between the two ring plates cannot be detected accurately, and if the height H2 is too large, the parallelism detection between the two regions W is affected.
Further, the test assembly further comprises a sliding block, the lower end of the sliding block is connected with the sliding rail in a sliding mode, and the upper end face of the sliding block is connected with the lower end face of the test block.
A method for testing the parallelism of a reel comprises the following steps:
s1: the test assembly is installed at the left end or the right end of the sliding rail, the rolling wheel to be tested is installed on the rotating shaft, the rolling wheel is located right above the sliding rail, and the rolling wheel is not in contact with the sliding rail. S2: the testing component slides to the middle part of the sliding rail, so that the testing component is positioned between the two limiting discs, the rolling wheel is rotated, and the parallelism of the two limiting discs is tested by the testing component.
Further, step S2 specifically includes:
s21: firstly, mounting a test block to the left end or the right end of a slide rail, then sliding the test block to the middle part of the slide rail, wherein the test block is positioned between two areas W, and rotating a handle to rotate a winding wheel; if the rolling wheel does not rotate smoothly, the parallelism of the two areas W of the rolling wheel is not in accordance with the requirement, and the test is finished; if the reel can rotate smoothly, it is indicated that the parallelism of the two areas W of the reel is satisfactory and the distance L1 between the two areas W is satisfactory, and step S22 is performed.
S22: sliding the test block to the left end or the right end of the slide rail, fixing the first test piece on the front side surface of the test block, fixing the second test piece on the rear side surface of the test block to form a test assembly, sliding the test assembly to the middle part of the slide rail, positioning the first test piece and the second test piece between the two annular plates, and rotating the handle to rotate the reel; if the rolling wheel does not rotate smoothly, the parallelism of the two annular plates of the rolling wheel is not in accordance with the requirement, and the test is finished; if the rolling wheel can rotate smoothly, the parallelism of the two annular plates of the rolling wheel is in accordance with the requirement, and the distance L2 between the two annular plates is in accordance with the requirement, and the test is finished.
The invention has the following beneficial effects:
according to the device and the method for testing the parallelism of the winding wheel, the winding wheel is sleeved on the rotating shaft, the rotating shaft drives the winding wheel to rotate, the testing assembly slides between the two limiting discs, and when the winding wheel rotates, the testing assembly can comprehensively detect the parallelism of the winding wheel. The testing block can detect the parallelism between two areas W of the rolling wheel, a testing assembly can be formed after the first testing sheet and the second testing sheet are installed on the front side and the rear side of the testing block, and the lower end (which refers to the part where the first testing sheet and the second testing sheet are installed) of the testing assembly can detect the parallelism between two annular plates of the rolling wheel. The height H2 is 1/4-2/5 of the height H1, so that the parallelism detection can be more accurately carried out. The device provided by the invention is simple in structure and convenient to detect, and can improve the comprehensiveness, accuracy and efficiency of the detection of the parallelism of the winding wheel.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a reel parallelism testing device of the invention.
Fig. 2 is a right side view of the inventive reel parallelism testing apparatus.
Fig. 3 is a schematic structural view of the limiting disk of the present invention.
FIG. 4 is a schematic diagram of the structure of the test assembly of the present invention.
Fig. 5 is a right side view of the test assembly of the present invention.
Fig. 6 is a right side view of the reel of the present invention.
FIG. 7 is a flow chart of a reel parallelism testing method of the present invention.
FIG. 8 is a flow chart of step 2 of the reel parallelism testing method of the present invention.
In the figure: 1. the device comprises a base, 2, a fixing seat, 3, a rolling wheel, 4, a testing component, 5, a handle, 6, a rotating shaft, 11, a sliding rail, 31, a limiting disc, 32, a connecting shaft, 311 and a central circular plate. 312. Support rib, 313, annular board, 41, test piece, 42, first test piece, 43, second test piece, 44, slider.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1-6, a testing device for the parallelism of a winding wheel comprises a base 1, a fixing seat 2, a rotating shaft 6, a winding wheel 3 and a testing component 4. Be equipped with slide rail 11 on the base 1, fixing base 2 and base 1 fixed connection, fixing base 2 and slide rail 11 are located the top of base 1, and the direction that the fixing base 2 is close to slide rail 11 is the place ahead A. The rotating shaft 6 is arranged on the fixing seat 2, and the rotating shaft 6 penetrates through the front side face and the rear side face of the fixing seat 2. The sliding direction on the sliding rail 11 is X, the axis of the rotating shaft 6 is Y, and X is vertical to Y. The winding wheel 3 comprises two limiting discs 31 and a connecting shaft 32, one end of the connecting shaft 32 is connected with one limiting disc 31, the other end of the connecting shaft 32 is connected with the other limiting disc 31, and the two limiting discs 31 and the connecting shaft 32 are sleeved at the front end of the rotating shaft 6. The winding wheel 3 is located at the front side of the fixed seat 2, and the winding wheel 3 is located right above the sliding rail 11. The lower extreme and the slide rail 11 sliding connection of test component 4, test component 4 is used for measuring the depth of parallelism of two spacing dishes 31. In this embodiment, the two limiting discs 31 are detachably connected with the front end of the rotating shaft 6, the connecting shaft 32 is also detachably connected with the front end of the rotating shaft 6, and after the installation is completed, when the rotating shaft 6 rotates, the rolling wheel 3 can be driven to rotate together. When the winding wheel 3 is arranged on the rotating shaft 6, a certain distance is left between the lowest end of the winding wheel 3 and the sliding rail 11, so that the winding wheel 3 can rotate conveniently. In this embodiment, the slide rail 11 is a linear slide rail, and the testing component 4 can slide left and right on the slide rail 11.
The testing device for the parallelism of the winding wheel further comprises a handle 5, the handle 5 is connected with the rear end of the rotating shaft 6, and the handle 5 is positioned on the rear side of the fixed seat 2. The handle 5 can drive the rotating shaft 6 to rotate when rotating, and the rotating shaft 6 can drive the rolling wheel 3 to rotate when rotating.
In the present embodiment, the two limiting disks 31 are identical in structure. The stopper disk 31 includes a center circular plate 311, a support rib 312, and an annular plate 313, wherein one end of the support rib 312 is connected to the center circular plate 311, and the other end of the support rib 312 is connected to the annular plate 313, and the region between the outer circumference of the center circular plate 311 and the inner circumference of the annular plate 313 is denoted as W. In this embodiment, the distance between the two areas W is L1, the distance between the two annular plates 313 is L2, and the distance L2 is generally about 3mm greater than the distance L1, so as to facilitate material collection. Therefore, the test assembly 4 of the present embodiment needs to detect both the distances L1 and L2. In the present embodiment, each of the limiting disks 31 has a region W, which is an annular region between two dotted lines, as shown in fig. 3. An annular plate 313 is provided at the edge of each limiting disc 31. The two regions W are regions on the two retainer disks 31, respectively, and the two annular plates 313 are annular plates on the two retainer disks 31, respectively.
In the present embodiment, the test assembly 4 includes a test block 41, a first test strip 42 and a second test strip 43, the first test strip 42 is fixed to the front side surface of the test block 41, and the second test strip 43 is fixed to the rear side surface of the test block 41. Preferably, the first test piece 42 and the second test piece 43 are both located at a position of the test block 41 close to the lower end, three bottom surfaces of the first test piece 42, the second test piece 43 and the test block 41 are located at the same horizontal plane, the front side surface and the rear side surface of the test block 41 are parallel, the front side surface of the first test piece 42 and the rear side surface of the second test piece 43 are parallel, and thus the detection of the parallelism between the two limiting discs 31 is more accurate. The height of the test block 41 is H1, and the height of the first test strip 42 and the height of the second test strip 43 are both H2, i.e., the height of the first test strip 42 and the height of the second test strip 43 are equal. The height H1 is greater than the height H2, and when the testing component 4 tests the parallelism of the two limiting discs 31, the testing block 41 is located between the two areas W, and the first testing piece 42 and the second testing piece 43 are both located between the annular plates 313. That is, the test block 41 detects the distance L1, and the distance L2 is detected after the first test strip 42 and the second test strip 43 are mounted on the front and rear sides of the test block 41. For example, the width of the test block 41 is 48.6mm, and the widths of the first test strip 42 and the second test strip 43 are both 1.45mm, so that the detection is more targeted and the detection result is more accurate. In the present embodiment, height H2 may be 1/4-2/5 of height H1. The height H1 of the test block 41 is based on the parallelism with which the area W can be detected comprehensively, and for example, the height H1 may be 230 mm. The height H2 of the first test strip 42 and the second test strip 43 is based on the parallelism with which the annular plate 313 can be detected, and for example, the height H2 may be between 57.5mm and 92 mm. If the height H2 is too small, the parallelism between the two annular plates 313 cannot be detected accurately, and if the height H2 is too large, the parallelism detection between the two areas W is affected.
The testing component 4 further comprises a sliding block 44, the lower end of the sliding block 44 is connected with the sliding rail 11 in a sliding mode, and the upper end face of the sliding block 44 is connected with the lower end face of the testing block 41. In this embodiment, the testing block 41 is perpendicular to the plane of the base 1, and when the testing component 4 tests the parallelism between the two limiting discs 31, the coaxiality between the two limiting discs 31 can be detected at the same time. The coaxiality means that the axes of the two limiting discs 31 are overlapped, if the two limiting discs 31 are dislocated or inclined during installation, the test component 4 cannot be clamped between the two limiting discs 31, or the rolling wheel 3 cannot smoothly rotate when the rotating shaft 6 rotates.
Example two
As shown in fig. 7-8, a method for testing the parallelism of a reel, which uses the device of the first embodiment, includes the following steps:
s1: install test component 4 to the left end or the right-hand member of slide rail 11, install the rolling wheel 3 that awaits measuring to pivot 6 on, rolling wheel 3 is located slide rail 11 directly over, and rolling wheel 3 and slide rail 11 contactless.
S2: the testing component 4 slides to the middle part of the sliding rail 11, so that the testing component 4 is positioned between the two limiting discs 31, the rolling wheel 3 is rotated, and the parallelism of the two limiting discs 31 is tested by the testing component 4.
Step S2 specifically includes:
s21: firstly, mounting the testing block 41 to the left end or the right end of the slide rail 11, then sliding the testing block 41 to the middle of the slide rail 11, at this time, the testing block 41 is positioned between the two areas W, and rotating the handle 5 to rotate the winding wheel 3; if the rolling wheel 3 does not rotate smoothly, the parallelism of the two areas W of the rolling wheel 3 is not in accordance with the requirement, and the test is finished; if the winding wheel 3 can rotate smoothly, it indicates that the parallelism of the two areas W of the winding wheel 3 is satisfactory and the distance L1 between the two areas W is satisfactory, and step S22 is performed.
S22: sliding the test block 41 to the left end or the right end of the slide rail 11, fixing the first test piece 42 on the front side surface of the test block 41, fixing the second test piece 43 on the rear side surface of the test block 41 to form the test assembly 4, sliding the test assembly 4 to the middle part of the slide rail 11, wherein at the moment, the first test piece 42 and the second test piece 43 are both positioned between the two annular plates 313, and rotating the handle 5 to enable the winding wheel 3 to rotate; if the rolling wheel 3 does not rotate smoothly, the parallelism of the two annular plates 313 of the rolling wheel 3 is not qualified, and the test is finished; if the winding wheel 3 can rotate smoothly, the parallelism of the two annular plates 313 of the winding wheel 3 is satisfactory, and the distance L2 between the two annular plates 313 is satisfactory, and the test is finished.
In the present embodiment, the winding wheel 3 is not rotated smoothly, which means that the winding wheel 3 cannot rotate because the distance between the two limiting disks 31 does not meet the standard, or the winding wheel is rotated laboriously, and the parallelism between the two limiting disks 31 is considered to be not satisfactory.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined by the scope of the claims.
Claims (6)
1. A kind of reel parallelism testing device, characterized by, this apparatus includes:
a base (1), a slide rail (11) is arranged on the base (1),
the fixing seat (2) is fixedly connected with the base (1), the fixing seat (2) and the sliding rail (11) are positioned above the base (1), the direction of the fixing seat (2) close to the sliding rail (11) is recorded as a front A,
the rotating shaft (6) is arranged on the fixed seat (2), and the rotating shaft (6) penetrates through the front side surface and the rear side surface of the fixed seat (2); the sliding direction on the sliding rail (11) is X, the axial line of the rotating shaft (6) is Y, the X is vertical to the Y,
the winding wheel (3) comprises two limiting discs (31) and a connecting shaft (32), one end of the connecting shaft (32) is connected with one limiting disc (31), the other end of the connecting shaft (32) is connected with the other limiting disc (31), the two limiting discs (31) and the connecting shaft (32) are sleeved at the front end of the rotating shaft (6), the winding wheel (3) is positioned on the front side of the fixing seat (2), and the winding wheel (3) is positioned right above the sliding rail (11); the limiting disc (31) comprises a central circular plate (311), a supporting rib (312) and an annular plate (313), one end of the supporting rib (312) is connected with the central circular plate (311), the other end of the supporting rib (312) is connected with the annular plate (313), and the area between the outer circumference of the central circular plate (311) and the inner circumference of the annular plate (313) is W;
the lower end of the testing component (4) is connected with the sliding rail (11) in a sliding mode, and the testing component (4) is used for measuring the parallelism between the two limiting discs (31);
the handle (5), the handle (5) is connected with the rear end of the rotating shaft (6), and the handle (5) is positioned on the rear side of the fixed seat (2);
the testing assembly (4) comprises a testing block (41), a first testing piece (42) and a second testing piece (43), wherein the first testing piece (42) is fixed on the front side surface of the testing block (41), the second testing piece (43) is fixed on the rear side surface of the testing block (41), the height of the testing block (41) is H1, the heights of the first testing piece (42) and the second testing piece (43) are both H2, and the height H1 is greater than the height H2; when the testing component (4) tests the parallelism of the two limiting discs (31), the testing block (41) is positioned between the two areas W, and the first testing sheet (42) and the second testing sheet (43) are both positioned between the annular plates (313).
2. The reel parallelism testing device of claim 1, wherein the front side and the back side of the test block (41) are kept parallel, and the front side of the first test strip (42) is kept parallel to the back side of the second test strip (43).
3. The reel parallelism testing apparatus of claim 1, wherein the height H2 is 1/4-2/5 of the height H1.
4. The roller parallelism testing device according to claim 2, characterized in that the testing assembly (4) further comprises a slider (44), the lower end of the slider (44) is slidably connected with the slide rail (11), and the upper end surface of the slider (44) is connected with the lower end surface of the testing block (41).
5. A roll parallelism measuring method, characterized in that the roll parallelism measuring apparatus according to any one of claims 1 to 4 is used, the method comprising the steps of:
s1: the testing assembly (4) is arranged at the left end or the right end of the sliding rail (11), the rolling wheel (3) to be tested is arranged on the rotating shaft (6), the rolling wheel (3) is positioned right above the sliding rail (11), and the rolling wheel (3) is not in contact with the sliding rail (11);
s2: the testing component (4) is slid to the middle of the sliding rail (11), so that the testing component (4) is located between the two limiting discs (31), the rolling wheel (3) is rotated, and the parallelism of the two limiting discs (31) is tested by the testing component (4).
6. The method for testing the parallelism of the winding wheel of claim 5, wherein the step S2 specifically comprises:
s21: firstly, mounting a test block (41) to the left end or the right end of a slide rail (11), then sliding the test block (41) to the middle of the slide rail (11), wherein the test block (41) is positioned between two areas W, and rotating a handle (5) to rotate a reel (3); if the rolling wheel (3) does not rotate smoothly, the parallelism of the two areas W of the rolling wheel (3) is not qualified, and the test is finished; if the winding wheel (3) can smoothly rotate, the parallelism of the two areas W of the winding wheel (3) is in accordance with the requirement, and the distance L1 between the two areas W is in accordance with the requirement, and the step S22 is executed;
s22: the testing method comprises the following steps that a testing block (41) slides to the left end or the right end of a sliding rail (11), then a first testing sheet (42) is fixed to the front side face of the testing block (41), a second testing sheet (43) is fixed to the rear side face of the testing block (41) to form a testing assembly (4), the testing assembly (4) slides to the middle of the sliding rail (11), at the moment, the first testing sheet (42) and the second testing sheet (43) are located between two annular plates (313), and a handle (5) is rotated to enable a rolling wheel (3) to rotate; if the rolling wheel (3) does not rotate smoothly, the parallelism of the two annular plates (313) of the rolling wheel (3) is not qualified, and the test is finished; if the winding wheel (3) can rotate smoothly, the parallelism of the two annular plates (313) of the winding wheel (3) is satisfactory, the distance L2 between the two annular plates (313) is satisfactory, and the test is finished.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110971719.XA CN113418435B (en) | 2021-08-24 | 2021-08-24 | Device and method for testing parallelism of winding wheel |
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|---|---|---|---|
| CN202110971719.XA CN113418435B (en) | 2021-08-24 | 2021-08-24 | Device and method for testing parallelism of winding wheel |
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| CN113418435A CN113418435A (en) | 2021-09-21 |
| CN113418435B true CN113418435B (en) | 2021-11-16 |
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| CN113665146B (en) * | 2021-09-02 | 2022-02-15 | 常州欣盛半导体技术股份有限公司 | Reel repairing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104088871B (en) * | 2014-06-27 | 2016-03-02 | 华南理工大学 | A kind of precision positioning drive end pre-tightening apparatus |
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|---|---|---|---|---|
| CN2646662Y (en) * | 2003-06-06 | 2004-10-06 | 张先荣 | Wheel spacing observing and controlling equipment for axle assembling press |
| CN204535630U (en) * | 2015-02-06 | 2015-08-05 | 中国矿业大学(北京) | A kind of sample parallel degree proving installation |
| CN109696162A (en) * | 2018-12-27 | 2019-04-30 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of steel building testing apparatus for verticality |
| CN211476973U (en) * | 2019-12-31 | 2020-09-11 | 昆山吉纳尔运动器材有限公司 | Parallelism detection device of shock-absorbing front fork disc brake |
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| CN113418435A (en) | 2021-09-21 |
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