CN110608658A - Flatness detection device and flatness detection method - Google Patents
Flatness detection device and flatness detection method Download PDFInfo
- Publication number
- CN110608658A CN110608658A CN201910885464.8A CN201910885464A CN110608658A CN 110608658 A CN110608658 A CN 110608658A CN 201910885464 A CN201910885464 A CN 201910885464A CN 110608658 A CN110608658 A CN 110608658A
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- flatness
- measuring
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- detection
- detecting apparatus
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- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 9
- 230000001788 irregular Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 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
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The application provides a flatness detection device and a detection method, the detection device comprises a support component and a measuring component, and the measuring component comprises: the measuring plate is detachably arranged on the support assembly, and a penetrating detection platform mounting hole is formed in the measuring plate; the fine grinding detection platform is embedded in the detection platform mounting hole and is provided with a through measuring hole; and a flatness detecting unit including a flatness detector and a measuring needle capable of passing through the measuring hole and partially protruding out of the finish grinding detecting platform. By utilizing the flatness detection device, the flatness end face to be measured can be pressed, so that the measuring needle head is pressed down, the fine grinding inspection platform is attached, the numerical value of the flatness detector is read, and the flatness value can be measured.
Description
Technical Field
The present invention relates to the technical field of industrial machinery, and more particularly, to a flatness detecting apparatus and a method of detecting flatness.
Background
Along with the current industrial development, the machining precision is improved, and the product machining requirements are also continuously improved. In particular to parts and components in the valve body, electrical control parts and the like. The fittings are small in product, complex in shape and high in precision requirement.
The related flatness tester in the market at present has high test precision and good accuracy, but can not exert the measurement advantages of some products under the conditions of irregular appearance, asymmetric shape and the like. Because such testers need to hold the product steady and then center and level again before testing. Once the product centre gripping is incorrect or the product is irregular, aligning, level adjusting just can't satisfy the requirement, and the test result is not only inaccurate, but also misleading staff's analysis on the contrary.
The instrument needs longer time when clamping, aligning and leveling products, so that the flatness of the products is not suitable for being tested at any time for factory production personnel and quality inspection personnel. However, the flatness is related to the assembly quality of the finished product, and the processing quality of the finished product must be monitored for 2 hours/time.
The existing instrument has higher requirements on storage environment, and a measuring platform is required to be fixed and horizontal; the device completely depends on a power supply and an air source to work, and the device is not necessary.
Therefore, it is necessary to develop a portable flatness detecting apparatus to solve the above problems.
Disclosure of Invention
In view of the above problems in the prior art, the present application provides a novel portable flatness detection apparatus and a method for detecting flatness, which can detect flatness of regular and irregular parts, and are simple and convenient to operate.
In a first aspect, the present invention provides a flatness detecting apparatus, which includes a carriage assembly and a measuring assembly, wherein the measuring assembly includes: the measuring plate is detachably arranged on the support assembly, and a penetrating detection platform mounting hole is formed in the measuring plate; the fine grinding detection platform is embedded in the detection platform mounting hole and is provided with a through measuring hole; and a flatness detecting unit including a flatness detector and a measuring needle capable of passing through the measuring hole and partially protruding out of the finish grinding detecting platform. By utilizing the flatness detection device, the flatness end face to be measured can be pressed, so that the measuring needle head is pressed down, the fine grinding inspection platform is attached, the numerical value of the flatness detector is read, and the flatness value can be measured.
In one embodiment of the first aspect, the measurement assembly further includes a support bar, a first end of which is fixedly disposed at a lower end surface of the measurement plate, and the flatness detecting unit is movable up and down relative to the support bar along a length direction of the support bar.
In one embodiment of the first aspect, the flatness detecting apparatus further includes a wing nut that is screwed to a second end portion of the support rod opposite to the first end portion, so that the flatness detecting unit can move up and down and rotate with respect to the support rod. Through this embodiment, can make measuring component can reciprocate along the length direction of bracing piece to the realization is to the detector of different models, adjusts the cooperation position of measuring orifice and measuring needle head.
In one embodiment of the first aspect, the measuring assembly further comprises a detection platform fixing block for fixing the fine grinding detection platform, which is arranged on the lower end face of the measuring plate. Through this embodiment, can realize fixing accurate grinding testing platform, avoid its removal and produce the influence to final result.
In one embodiment of the first aspect, the first end of the support bar is fixedly arranged at the lower end face of the measuring plate. Through this embodiment, can realize the bracing piece and the plane degree detecting element who is connected with it and measure the dismantled connection of board.
In one embodiment of the first aspect, the measurement assembly further comprises: and the measuring plate fixing clamp is fixedly connected with the measuring plate and detachably connected with the bracket component. Through this embodiment, can make and to adjust the height of measuring component to ground now, adapt to different operating personnel and operation occasion.
In one embodiment of the first aspect, the bracket assembly comprises: a base plate; and one end of the strut is arranged on the bottom plate, and the other end of the strut is detachably connected with the measuring plate.
In one embodiment of the first aspect, the bracket assembly further comprises: at least one support foot disposed on the base plate and in contact with the ground, the at least one support foot cooperating with the support post such that the flatness detecting unit remains stable. By this embodiment, the structural stability of the detection device during detection can be ensured.
In one embodiment of the first aspect, the flatness detector is a dial gauge or a dial gauge.
In a second aspect, the present invention further provides a method for detecting the flatness of the end face of the part to be detected by using the flatness detecting apparatus in the first aspect and the embodiment thereof, where the method includes; step 1, placing the end face of the part to be measured on the measuring hole of the fine grinding detection platform so as to pre-attach the measuring needle head; step 2, pressing the part to be detected to enable the end face of the part to be detected to be tightly attached to the end face of the fine grinding detection platform; step 3, reading the reading of the flatness detector; step 4, moving the part to be detected, and repeating the steps 1-3 to obtain the readings of the multiple flatness detectors; and 5, determining the difference between the maximum value and the minimum value in the readings of the flatness detectors as the flatness of the end face of the part to be measured.
In one embodiment of the second aspect, prior to step 1, the method further comprises: and 6, calibrating the flatness detection device. With this embodiment, the detection error can be eliminated to the maximum extent.
Compared with the prior art, the flatness detection device and the flatness detection method have the following beneficial effects;
1. the invention realizes the detection of regular and irregular parts and effectively monitors the processing quality of products.
2. The operation is simple, the measuring time is short, the device is not limited by environment and places, and any person can measure the device at any time and any place.
3. The device is low in manufacturing cost relative to instrument procurement.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 is a schematic structural view showing a flatness detecting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a testing status of a to-be-tested part according to an embodiment of the present invention;
figure 3 shows a cross-sectional view of a refining detection platform according to an embodiment of the invention;
fig. 4 is a sectional view showing an assembly structure of a finish grinding test platform and a measuring needle according to an embodiment of the present invention;
fig. 5 shows a schematic flow chart of a method of detecting flatness according to an embodiment of the present invention.
List of reference numerals:
100-flatness detecting means; 110-a bracket assembly; 120-a measurement component; 111-a backplane; 112-a pillar; 113-leg; 121-measurement plate; 121A-measurement plate fixation clamp; 121B-star handle; 122-finish grinding detection platform; 123-measuring aperture; 1231-measuring needle control hole; 1232-measuring needle guide arc; 1233-measuring needle guide hole; 124-flatness detecting unit; 125-a flatness detector; 126-detector retaining clip; 127-a measuring needle; 128-support rods; 129-wing nuts; 130-parts to be tested.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 is a block diagram of a flatness detecting apparatus 100 according to the present invention. As shown in fig. 1, the inspection apparatus 100 includes a support assembly 110 and a measuring assembly 120, the measuring assembly 120 is used for measuring the flatness of the end surface of the part to be inspected, the support assembly 110 is used for supporting the measuring assembly 120, and preferably the measuring assembly 120 can move up and down relative to the support assembly 110 to adapt to different heights of inspectors and different inspection occasions.
The bracket assembly 110 includes a base plate 111 and a support post 112, wherein one end of the support post 112 is fixedly disposed on the base plate 111, and the other end is detachably connected to the measuring assembly 120.
In one embodiment, the distal end of the post 112 does not extend beyond the bottom end face of the base plate 111, which is placed on the ground during the measurement.
In another preferred embodiment, the support assembly 110 is further provided with at least one leg 113, the distal end of the pillar 112 extends out of the bottom end surface of the base plate 111 by a length equal to the height of the leg 113, and the height of the at least one leg 113 is adjustable. The at least one leg 113 cooperates with the post 112 to maintain the test device 100 in a structurally stable and level configuration during use.
Preferably, the feet 113 are foot cups.
Preferably, the pillar 112 is a cylindrical structure, the cross section of the bottom plate 111 is triangular, and two legs 113 are provided on the bottom plate 111.
As shown, the measuring assembly 120 includes a measuring plate 121, a finish grinding sensing platform 122, a flatness sensing unit 124, and a support bar 128.
The measuring plate 121 is detachably connected to the bracket assembly 110, a through detecting platform mounting hole (shown in fig. 1) is formed in the measuring plate 121, the fine grinding detecting platform 122 is embedded in the detecting platform mounting hole, and a through measuring hole 123 (see fig. 3 and 4) is formed in the fine grinding detecting platform 122, so that a measuring needle 127 (described later) can partially penetrate through the measuring hole 123 to protrude out of the smooth end surface (and the upper end surface in fig. 1 to 4) of the fine grinding detecting platform 122.
It should be understood herein that the smooth surface of the finish grinding test platform 122 should have good flatness such that the flatness of the smooth surface does not affect the flatness of the end face of the final part to be tested. Preferably, the finish grinding test platform is made of marble or stainless steel.
The flatness detecting unit 124 includes a flatness detector 125, a detector fixing clip 126 and a measuring needle 127, the measuring needle 127 is connected to the flatness detector 125 and is adapted in the measuring hole 123, where the flatness detector 125 is optionally a dial indicator or a dial indicator, and since the dial indicator or the dial indicator and the measuring needle 127 are well known by those skilled in the art, details will not be described herein; the flatness detector 125 and the measuring tip 127 are connected to a support rod 128 via a detector fixing clip 126.
As shown in fig. 2 and 3, the measuring hole 123 of the finish grinding detection platform 122 is a through hole penetrating through the upper and lower end surfaces, and the measuring needle 127 can pass through the measuring hole 123 from below and partially protrude from the upper end surface (i.e., the smooth end surface) of the finish grinding detection platform 122 to fit the end surface of the part to be measured.
Preferably, as shown in fig. 3, the measuring hole 123 includes a measuring needle control hole 1231, a measuring needle guide arc 1232, and a measuring needle guide hole 1233 to correspond to the shape and size of the measuring needle 127.
A first end of the supporting rod 128 is connected to and supports the measuring plate 121, and is preferably fixedly disposed at a lower end surface of the measuring plate 121, and the flatness detecting unit 124 is movable relative to the supporting rod 128 along a length direction of the supporting rod 128 and is rotatable about an axis of the supporting rod 128. Specifically, a second end portion of the support rod 128 opposite to the first end portion is provided with a thread, the butterfly nut 129 is in threaded connection with the second end portion, the detector fixing clip 126 is connected with the support rod 128 through a mounting piece, one end of the mounting piece is provided with a keyhole for being sleeved on the support rod 128, and the other end of the mounting piece is used for being connected with the detector fixing clip 126. In this configuration, the flatness detecting unit 124 can be adjusted to move up and down along the length direction of the supporting rod 128 and rotate around the axis of the supporting rod 128 by the screw motion of the wing nut 127, so that the matching position of the measuring needle 127 and the measuring hole 123 can be adjusted for different types of detectors.
As shown in fig. 1, the measuring assembly 120 further includes a measuring plate fixing clip 121A, one end of which is fixedly connected with the measuring plate 121 through a screw, and the other end of which is detachably mounted on the supporting column 112 through a star-shaped handle 121B, so that the degree of tightness of engagement between the measuring plate fixing clip 121A and the supporting column 112 can be adjusted by rotating the star-shaped handle 121B, and thus the up-and-down movement of the measuring assembly 120 on the supporting column 112 can be controlled, so as to adapt to different heights and detection occasions of operators.
Fig. 5 is a schematic flow chart of a method 200 for detecting the flatness of the end face of the part 130 to be detected by using the detecting apparatus 100 provided in the present application. As shown in fig. 5, in conjunction with fig. 2, the method 200 includes:
s210, placing the end face of the part 130 to be measured on the measuring hole 123 of the fine grinding detection platform 122 so as to be attached to the measuring needle head 127;
s220, pressing the part 130 to be detected to enable the end face of the part 130 to be detected to be tightly attached to the end face of the fine grinding detection platform 122;
s230, reading the flatness detector 125;
s240, moving the part 130 (fig. 2) to be measured, and repeating steps S210-S230 to obtain readings of the plurality of flatness detectors 125;
s250, determining a difference between a maximum value and a minimum value of the readings of the flatness detectors 125 as the flatness of the end surface of the to-be-measured part 130.
In a preferred embodiment, the method 200 further includes calibrating the flatness detection apparatus 100 before S210.
Specifically, the method 200 may be described as follows:
a free state fine grinding inspection platform (such as a marble block) is taken firstly, a smooth surface is firstly attached to a measuring needle head connected with a dial indicator (dial indicator), then, after a certain force is lightly applied to attach to the fine grinding surface of another fixed fine grinding inspection platform for calibration, the dial indicator (dial indicator) is reset to zero, and then the fine grinding detection platform for calibration on the upper layer is removed. In the measuring stage, a product needing to be measured for flatness is taken, the end face needing to be measured is firstly attached to a dial indicator (dial indicator) measuring needle head, and after the attachment, a certain force is applied lightly, so that the product is pressed and attached to the end face of the fine grinding inspection platform. At the moment, reading and recording the numerical value of a dial indicator (dial indicator); and repeating the product measuring action for at least 8 times, wherein the point taking position is the end face of the product to be measured, and the upper, lower, left and right sides of the front view state are respectively taken for at least 2 times. The point taking mode can be that the points are taken according to the shape of a target ring, the points are taken at an outer ring, then the points are taken at an inner ring, and the positions are approximately equal. The measured value is the difference between the maximum value and the minimum value, namely the end face flatness value.
The flatness detection device and the detection method provided by the application have the following beneficial effects; the invention realizes the detection of regular and irregular parts and effectively monitors the processing quality of products; the operation is simple, the measuring time is short, the method is not limited by environment and places, and any person can measure the method at any time and any place; the device is low in manufacturing cost relative to instrument procurement.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (11)
1. A flatness detecting apparatus comprising a carriage assembly and a measurement assembly, wherein said measurement assembly comprises:
the measuring plate is detachably arranged on the support assembly, and a penetrating detection platform mounting hole is formed in the measuring plate;
the fine grinding detection platform is embedded in the detection platform mounting hole and is provided with a through measuring hole; and
a flatness detection unit comprising a flatness detector and a measuring needle that can pass through the measuring hole and partially protrude out of the finish grinding detection platform.
2. The flatness detecting apparatus according to claim 1, wherein the measuring unit further includes a support rod having a first end portion fixedly provided at a lower end surface of the measuring plate, the flatness detecting unit being connected to the support rod by a mounting member.
3. The flatness detecting apparatus according to claim 2, further comprising a wing nut, the wing nut being screw-coupled with a second end portion of the support rod opposite to the first end portion, the mounting member being configured such that the mounting member can move up and down with the flatness detecting unit with respect to a length direction of the support rod when the wing nut is loosened.
4. The flatness detecting apparatus according to claim 3, wherein the mounting member is configured such that the mounting member can be rotated with the flatness detecting unit with respect to an axis of the support rod when the wing nut is loosened.
5. The flatness detecting apparatus according to claim 4, wherein said measuring unit further includes a measuring platform fixing block for fixing said finish grinding measuring platform, which is provided at a lower end surface of said measuring plate.
6. The flatness detection apparatus of claim 5, wherein the measurement assembly further includes:
and the measuring plate fixing clamp is fixedly connected with the measuring plate and detachably connected with the bracket component.
7. The flatness detecting apparatus according to any one of claims 1 to 6, wherein the carriage assembly includes:
a base plate; and
and one end of the strut is arranged on the bottom plate, and the other end of the strut is detachably connected with the measuring plate.
8. The flatness detecting apparatus according to claim 7, wherein the carriage assembly further includes:
the at least one supporting foot is arranged on the bottom plate and is in contact with the ground, the at least one supporting foot is matched with the support column to enable the flatness detection device to be kept stable, and the levelness of the flatness detection device can be adjusted by rotating the supporting foot.
9. The flatness detecting apparatus according to claim 8, wherein the flatness detector is a dial gauge or a dial gauge.
10. A method for detecting the flatness of an end face of a part to be detected by using the flatness detecting apparatus according to any one of claims 1 to 9, the method comprising:
step 1, placing the end face of the part to be measured on the measuring hole of the fine grinding detection platform so as to be attached to the measuring needle head;
step 2, pressing the part to be detected to enable the end face of the part to be detected to be tightly attached to the end face of the fine grinding detection platform;
step 3, reading the reading of the flatness detector;
step 4, moving the part to be detected, and repeating the steps 1-3 to obtain the readings of the multiple flatness detectors;
and 5, determining the difference between the maximum value and the minimum value in the readings of the flatness detectors as the flatness of the end face of the part to be measured.
11. The method of claim 10, wherein prior to step 1, the method further comprises:
and 6, calibrating the flatness detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885464.8A CN110608658A (en) | 2019-09-19 | 2019-09-19 | Flatness detection device and flatness detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885464.8A CN110608658A (en) | 2019-09-19 | 2019-09-19 | Flatness detection device and flatness detection method |
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| CN110608658A true CN110608658A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910885464.8A Pending CN110608658A (en) | 2019-09-19 | 2019-09-19 | Flatness detection device and flatness detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532367A (en) * | 2020-04-17 | 2021-10-22 | 北京福田康明斯发动机有限公司 | Flatness measuring device and method |
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