CN116839529A - Multi-stage flatness detection method for circular saw blade - Google Patents

Abstract

The invention relates to a multi-stage flatness detection method for a circular saw blade, which comprises the following steps: step one: a group of initial positioning structures are arranged for initially centering and positioning a plurality of groups of circular saw blades which are stacked; step two: a group of secondary positioning structures are arranged for carrying out secondary centering positioning on the circular saw blade subjected to primary centering positioning; step three: transferring the circular saw blade at the primary positioning structure to the secondary positioning structure through the transfer structure; step four: a group of detection structures are arranged for detecting the planeness of the circular saw blade after the secondary centering positioning; step five: the circular saw blade subjected to secondary centering positioning is transferred to the detection structure through the transfer structure; in the multi-level flatness detection method of the circular saw blade, the whole circular saw blade transferring process is not needed to be manually carried out, and the circular saw blade is in elastic contact, so that the surface of the circular saw blade is not damaged, the accuracy of a detection result is improved, and the integrity of the surface of the circular saw blade is also ensured.

Description

Multi-stage flatness detection method for circular saw blade

Technical Field

The invention belongs to the technical field of saw blade flatness detection, and particularly relates to a multi-stage flatness detection method for a circular saw blade.

Background

The pruning machine is suitable for the professional pruning in the aspect of landscaping such as tea pruning, parks, garden, roadside hedges and the like, wherein the circular saw blade is widely used. The high-speed steel circular saw blade is a saw blade comprising a plurality of elements such as carbon, tungsten, molybdenum, chromium and the like, has high hot hardness after heat treatment, and is shown in fig. 1, and is a structural schematic diagram of the circular saw blade.

After the circular saw blade is processed and formed, the circular saw blade cannot be directly put into production and used, flatness detection needs to be carried out on the circular saw blade, otherwise, if the surface of the circular saw blade is uneven in subsequent use, severe vibration can occur under the condition of high-speed rotation, so that the trimming work is affected, and potential safety hazards can be generated.

Among the current circular saw blade flatness detection equipment, need the operative employee to carry out the transportation of circular saw blade, the circular saw blade after the manual work is transported can't guarantee centering precision, consequently can influence subsequent testing result, and current detection equipment scratch the surface of circular saw blade easily when detecting moreover, causes the damage to the circular saw blade.

Disclosure of Invention

The invention aims to overcome the defects that the existing circular saw blade flatness detection result is low in accuracy and the surface of the circular saw blade is easy to scratch, and provides a circular saw blade multistage flatness detection method.

In order to achieve the above purpose, the invention adopts the following technical scheme: a method for detecting multi-level flatness of a circular saw blade, comprising the steps of:

step one: a group of initial positioning structures are arranged for initially centering and positioning a plurality of groups of circular saw blades which are stacked;

step two: a group of transfer structures are arranged for transferring the circular saw blade at the initial positioning structure;

step three: a group of secondary positioning structures are arranged and used for receiving the circular saw blade after the primary centering positioning transferred in the step two and carrying out secondary centering positioning on the circular saw blade;

step four: a group of transfer structures are arranged for transferring the circular saw blade at the secondary positioning structure;

step five: a group of detection structures are arranged and are used for bearing the circular saw blade subjected to secondary centering positioning and carrying out flatness detection on the circular saw blade;

step six: and a group of discharging structures are arranged and used for collecting the detected circular saw blade.

Optimally, in step one, the primary positioning structure comprises a primary positioning bottom plate, a primary positioning plate arranged at the top of the primary positioning bottom plate in a synchronous and relatively moving manner and a plurality of groups of primary positioning columns fixed at the top of the primary positioning plate at intervals, wherein the plurality of groups of primary positioning columns move inwards to finish primary centering positioning of the circular saw blade, and the primary positioning plate is in a V shape.

Optimally, in the second step, the transfer structure comprises a transfer frame, a transfer plate movably arranged at the top of the transfer frame, a transfer mechanism fixed at the top of the transfer frame and used for driving the transfer plate to move, and a suction mechanism fixed at one side of the transfer plate, wherein the suction mechanism is used for sucking a circular saw blade at the inner side of the primary positioning column and placing the circular saw blade on the secondary positioning structure.

Optimally, in the third step, the secondary positioning structure comprises four groups of carrier plates which are in cross distribution, carrier grooves which are formed in the inner sides of the carrier plates, and arc-shaped parts which are arranged on the outer sides of the carrier grooves, wherein one group of carrier plates are fixed, the other three groups of carrier plates synchronously move inwards to form four groups of arc-shaped parts to form saw blade placing grooves which are matched with the saw blades, and the transfer structure places the saw blades subjected to primary centering positioning in the saw blade placing grooves for secondary centering positioning.

Optimally, in the fourth step, the detection structure comprises a detection underframe, a lower pressing mechanism arranged at the bottom of the detection underframe, an upper pressing mechanism fixed at the top of the detection underframe and a detection mechanism fixed at one side of the upper pressing mechanism, wherein the lower pressing mechanism is used for bearing a circular saw blade subjected to secondary centering positioning transferred by the transfer structure and driving the circular saw blade to ascend and drive the circular saw blade to rotate together with the upper pressing mechanism.

Optimally, the primary positioning structure further comprises a primary adjusting plate, an adapter plate, a pivoting plate and an adjusting rod, wherein the primary adjusting plate is slidably installed on the primary positioning bottom plate, the adapter plate is fixed at the top of the primary positioning bottom plate, the pivoting plate is rotatably connected to the top of the adapter plate, one end of the adjusting rod is pivoted with the pivoting plate, the other end of the adjusting rod is pivoted with the primary adjusting plate, and the primary positioning plate is fixed on the primary adjusting plate.

Optimally, the suction mechanism comprises a suction supporting plate fixed on one side of the transfer plate, a first lifting plate which is arranged below the suction supporting plate in an elastically lifting manner, a second lifting plate fixed at the bottom of the first lifting plate, a transfer fixing plate elastically installed at the bottom of the second lifting plate, and a transfer suction column circumferentially fixed at the bottom of the transfer fixing plate.

Optimally, the suction mechanism further comprises a lower guide sleeve fixed at the top of the second lifting plate, a lower guide post fixed at the top of the transfer fixing plate and penetrating through the second lifting plate and the lower guide sleeve, a buffer plate fixed at the top of the lower guide post, a transfer sleeve hole penetrating through the buffer plate, a transfer sleeve fixed at the top of the first lifting plate and matched with the transfer sleeve hole, a sleeving surface arranged at the top of the transfer sleeve, and a lower spring sleeved on the lower guide post;

when the first lifting plate ascends, the transfer sleeve ascends and is inserted into the transfer sleeve hole, and the buffer plate and the transfer fixing plate are driven to synchronously ascend;

when the first lifter plate descends, the second lifter plate compresses the lower spring and the transfer sleeve exits the transfer sleeve bore.

Optimally, the lower pressing mechanism comprises a lower pressing conveying plate, a lower pressing rotating column, a lower pressing cushion block and a side cushion block, wherein the lower pressing conveying plate is arranged in the detection underframe in a lifting mode, the lower pressing rotating column is rotatably arranged at the top of the lower pressing conveying plate, the lower pressing cushion block is fixed at the top of the lower pressing rotating column at intervals, the side cushion block is arranged at the outer side of the lower pressing cushion block, and the lower pressing cushion block and the side cushion block are used for bearing a circular saw blade to be detected.

Optimally, the upper pressing mechanism comprises an upper pressing frame fixed at the top of the detection underframe, an upper pressing rotary column rotatably mounted at the bottom of the upper pressing frame, a pressure head integrally connected at the bottom of the upper pressing rotary column and an inclined pressing surface obliquely arranged at the bottom of the pressure head, and the lower pressing mechanism drives the circular saw blade to ascend and prop against the inclined pressing surface of the pressure head and drive the circular saw blade to synchronously rotate with the pressure head.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the multi-level flatness detection method for the circular saw blade, the primary centering and positioning of the circular saw blade are finished through the primary positioning structure, the circular saw blade is transferred to the secondary positioning structure through the transfer structure to perform secondary centering and positioning, the position accuracy of the circular saw blade during detection is guaranteed, and finally the flatness detection is performed through the displacement sensor in the detection structure, so that the whole transfer process of the circular saw blade is not needed to be performed manually and is in elastic contact, the surface of the circular saw blade is not damaged, the accuracy of the detection result is improved, and the integrity of the surface of the circular saw blade is guaranteed.

Drawings

FIG. 1 is a schematic view of a circular saw blade to be inspected according to the present invention;

FIG. 2 is a schematic diagram of the initial positioning structure of the present invention;

FIG. 3 is a top view of the primary positioning structure of the present invention;

FIG. 4 is a schematic diagram of a transfer structure according to the present invention;

FIG. 5 is a right side view of the transfer structure of the present invention;

FIG. 6 is an enlarged view of the invention at A in FIG. 4;

FIG. 7 is a cross-sectional view of the suction means in the transfer structure of the present invention;

FIG. 8 is a schematic view of a secondary positioning structure according to the present invention;

FIG. 9 is a schematic view of a secondary positioning bottom plate in the secondary positioning structure of the present invention;

FIG. 10 is a schematic view of an active plate in a secondary positioning structure according to the present invention;

FIG. 11 is a schematic diagram of a push block in a secondary positioning structure according to the present invention;

FIG. 12 is a schematic view of a carrier in a secondary positioning structure according to the present invention;

FIG. 13 is a schematic view of a sub-positioning structure according to the present invention;

FIG. 14 is a schematic view of a transfer structure according to the present invention;

FIG. 15 is a schematic diagram of a detection structure according to the present invention;

FIG. 16 is a schematic diagram of a lower press-fit mechanism in the inspection structure of the present invention;

FIG. 17 is an enlarged view of the invention at B in FIG. 15;

FIG. 18 is a cross-sectional view of the upper press-fit mechanism in the test structure of the present invention;

FIG. 19 is an exploded view of the discharge structure of the present invention;

reference numerals illustrate:

1. a preliminary positioning structure; 11. a base plate is initially positioned; 12. a primary adjusting plate; 13. a conveyor belt avoiding groove; 14. an adapter plate; 15. a pivot plate; 16. an adjusting rod; 17. a primary positioning plate; 18. a primary positioning column;

2. a transfer structure; 21. a transfer rack; 22. a transfer plate; 23. a transfer mechanism; 231. transferring the sliding rail; 232. a transfer slide; 233. a servo motor; 234. transferring racks; 235. a transfer gear; 236. transferring the upright post; 24. a suction mechanism; 2401. sucking a supporting plate; 2402. an upper guide sleeve; 2403. an upper guide post; 2404. a synchronizing plate; 2405. a spring is arranged; 2406. a lifting cylinder; 2407. a first lifting plate; 2408. a second lifting plate; 2409. a connecting column; 2410. a transfer sleeve; 2411. sleeving the surface; 2412. buffer plate, 2413, transfer sleeve holes; 2414. a lower guide post; 2415. a lower guide sleeve; 2416. a lower spring; 2417. a transfer fixing plate; 2418. a transfer suction column;

3. a secondary positioning structure; 301. a secondary positioning bottom plate; 302. an extension plate; 303. a first guide plate; 304. a second guide plate; 305. a secondary positioning fixing plate; 306. a guide groove; 307. an active plate; 308. a driven plate; 309. an active guide bar; 310. a blocking part; 311. a pushing block; 312. a driven guide bar; 313. pushing grooves; 314. a bump; 315. a groove; 316. a secondary positioning pushing cylinder; 317. a sub-positioning tray; 318. positioning the cushion block for the second time; 319. a carrier plate; 320. a carrying groove; 321. an arc-shaped portion;

4. a transfer structure; 41. a transfer plate; 42. a transfer mechanism; 421. transferring guide sleeve; 422. transferring guide posts; 423. transferring the synchronous plate; 424. a transfer spring; 425. a transfer fixing plate; 426. transferring and sucking columns;

5. a detection structure; 51. detecting the underframe; 52. a lower pressing mechanism; 5201. pressing the sliding rail down; 5202. a lower pressing sliding block; 5203. a lower pressing gear; 5204. pressing down the toothed belt; 5205. pressing the conveying plate down; 5206. a rotary cylinder; 5207. pressing down the rotary column; 5208. pressing down the cushion block; 5209. a support bar; 5210. a side pad; 53. an upper pressing mechanism; 5301. a pressing frame is arranged; 5302. a bearing seat; 5303. pressing a rotating column; 5304. a pressure head; 5305. obliquely pressing the surface; 54. a detection mechanism; 541. a detection frame; 542. detecting a pushing cylinder; 543. a pushing frame; 544. detecting a lifting cylinder; 545. detecting a lifting plate; 546. a displacement sensor; 547. detecting the guide sleeve; 548. detecting a guide post; 55. an induction block;

6. a discharging structure; 601. a discharging frame; 602. a discharging groove; 603. a material plate; 604. positioning columns; 605. a material column; 606. and a material tray.

Description of the embodiments

The invention will be further described with reference to examples of embodiments shown in the drawings.

The multi-stage flatness detection method of the circular saw blade of the present invention is used for flatness detection of the circular saw blade shown in fig. 1, and comprises the following steps:

step one: a group of initial positioning structures 1 are arranged for initially centering and positioning a plurality of groups of circular saw blades which are stacked;

as shown in fig. 2 and 3, the structure of the primary positioning structure 1 is schematically shown, a plurality of groups of circular saw blades to be detected are stacked and placed on a conveyor belt, the conveyor belt carrying the circular saw blades is erected above the primary positioning structure 1, the circular saw blades are conveyed to the primary positioning structure 1 by the conveyor belt, and then the primary centering and positioning are performed on the stacked and placed groups of circular saw blades by the primary positioning structure 1. The primary positioning structure 1 comprises a primary positioning mechanism, a primary positioning plate 17 and a primary positioning column 18. The primary positioning mechanism is fixed on the processing machine table and is positioned below a conveyor belt (the conveyor belt is used for conveying a plurality of groups of circular saw blades which are stacked. The primary positioning plates 17 are arranged in two groups and are opposite to each other, and the two groups of primary positioning plates 17 synchronously move inwards or outwards under the drive of the primary positioning mechanism below, so that the primary centering and positioning of the circular saw blade on the conveyor belt are realized.

The primary positioning posts 18 are fixed at intervals at the top of the primary positioning plate 17, as shown in fig. 3, the primary positioning plate 17 is in a V shape, the primary positioning posts 18 fixed at the top of the primary positioning plate 17 are also in a V shape, when the lower primary positioning mechanism drives two groups of primary positioning plates 17 to synchronously move inwards, the primary positioning posts 18 on the primary positioning plate 17 synchronously move inwards along with the primary positioning plate 17 until abutting against the outer peripheral surface of the circular saw blade, and primary centering positioning of the circular saw blade is completed (the connecting line of the primary positioning posts 18 is tangent with the middle circular saw blade, in the embodiment, the primary positioning posts 18 are made of rubber, and edge teeth of the circular saw blade are prevented from being damaged in the primary centering positioning process).

The primary positioning mechanism comprises a primary positioning bottom plate 11, a primary adjusting plate 12, a conveyor belt avoiding groove 13, an adapter plate 14, a pivoting plate 15 and an adjusting rod 16. The primary positioning bottom plate 11 is provided with two groups, is fixed on a processing machine at intervals, and is provided with a conveyor belt avoiding groove 13 in the middle of the primary positioning bottom plate 11 to provide a conveying space for conveying a conveyor belt of a circular saw blade. The primary adjusting plates 12 are arranged in two groups, are slidably arranged at the top of the primary positioning bottom plate 11 through sliding rails and sliding blocks, and are positioned on two sides of the conveyor belt avoiding groove 13. The primary positioning plate 17 is fixed on the primary adjusting plate 12, and the primary adjusting plate 12 drives the primary positioning plate 17 to synchronously move inwards or outwards.

The adapter plate 14 is fixed in the conveyor belt avoiding groove 13 of the two groups of initial positioning bottom plates 11, the pivot plate 15 is rotatably mounted on the adapter plate 14 through a rotating shaft, two groups of adjusting rods 16 are arranged, one end of each adjusting rod 16 is rotatably connected to one side of each pivot plate 15, the other end of each adjusting rod 16 is rotatably mounted at the bottom of the corresponding initial adjusting plate 12, and a Z shape is formed between each two groups of adjusting rods 16 and each pivot plate 15 as shown in fig. 3. The processing machine is provided with a movable cylinder connected with one group of initial adjusting plates 12, and when the movable cylinder pushes the initial adjusting plates 12 inwards, the other group of initial adjusting plates 12 are driven to synchronously move inwards under the action of the adjusting rods 16 and the pivoting plates 15, so that the synchronous inner movement of the two groups of initial positioning plates 17 is realized, and the initial centering positioning of the circular saw blade is completed.

Step two: a group of transfer structures 2 are arranged for transferring the circular saw blade at the initial positioning structure 1;

as shown in fig. 4 and 5, the transfer structure 2 is schematically shown in the structure of the transfer structure 2, and the transfer structure 2 is used for clamping the circular saw blade at the initial positioning structure 1 to the secondary positioning structure 3 for secondary centering positioning. The transfer structure 2 includes a transfer frame 21, a transfer plate 22, a transfer mechanism 23, and a suction mechanism 24. The transfer frame 21 is fixed on a processing machine table, the transfer mechanism 23 is arranged on the transfer frame 21, the transfer plate 22 is fixed on the transfer mechanism 23, and the transfer mechanism 23 drives the transfer plate 22 to move above the transfer frame 21, so that the transfer of the circular saw blade is realized.

The transfer mechanism 23 includes a transfer slide rail 231, a transfer slider 232, a servo motor 233, a transfer rack 234, a transfer gear 235, and a transfer column 236. The transfer slide rail 231 is fixed at the top of the transfer frame 21 in a screw fastening mode, the transfer slide block 232 is slidably arranged on the transfer slide rail 231, the transfer plate 22 is fixed on the transfer slide block 232, and the transfer plate 22 drives the transfer slide block 232 to synchronously move when moving. As shown in fig. 6, the transfer rack 234 is fixed on the top of the transfer rack 21 by the transfer upright 236, the transfer upright 236 is a rubber column, and the fastening screw passes through the transfer rack 234 and the transfer upright 236 to be fixed on the transfer rack 21 (since the material of the transfer upright 236 is rubber, the transfer rack 234 and the transfer rack 21 are in elastic connection, rather than rigid connection, and when the rack is subsequently meshed with the transfer gear 235, the occurrence of the jamming condition can be avoided).

The servo motor 233 is fixed on the top of the transfer plate 22, an output shaft of the servo motor 233 penetrates through the transfer plate 22 and is provided with a transfer gear 235 meshed with the transfer rack 234, the transfer gear 235 is driven to synchronously rotate when the servo motor 233 rotates, and the transfer plate 22 is driven to move on the transfer frame 21 under the meshing action of the transfer rack 234 and the transfer gear 235.

The suction mechanism 24 is fixed on one side of the transfer plate 22, and is used for sucking the circular saw blade at the primary positioning structure 1 and transferring the circular saw blade to the secondary positioning structure 3, as shown in fig. 7, the suction mechanism 24 includes a suction support plate 2401, an upper guide sleeve 2402, an upper guide post 2403, a synchronous plate 2404, an upper spring 2405, a lifting cylinder 2406, a first lifting plate 2407, a second lifting plate 2408, a connecting post 2409, a transfer sleeve 2410, a sleeving surface 2411, a buffer plate 2412, a transfer sleeve hole 2413, a lower guide post 2414, a lower guide sleeve 2415, a lower spring 2416, a transfer fixing plate 2417 and a transfer suction post 2418. The suction support plate 2401 is fixed on one side of the transfer plate 22, the upper guide sleeve 2402 is fixed on the suction support plate 2401, the upper guide post 2403 penetrates the upper guide sleeve 2402 and the suction support plate 2401, and the lifting movement of the upper guide post 2403 is guided by means of the upper guide sleeve 2402. The synchronous plate 2404 is fixed on the top of the two groups of upper guide columns 2403, so that the ascending and descending synchronism of the two groups of upper guide columns 2403 is ensured, and the condition that the circular saw blade is fallen due to different heights is avoided when the circular saw blade is sucked later.

The upper spring 2405 is sleeved on the upper guide post 2403, the top of the upper spring 2405 is propped against the lower surface of the synchronizing plate 2404, the bottom of the upper spring 2405 is propped against the upper surface of the upper guide post 2402, and the upper guide post 2403 is driven to reset by the deformation of the upper spring 2405. The first lifting plate 2407 is fixed at the bottom of the upper guide post 2403, the lifting cylinder 2406 is fixed at the top of the suction support plate 2401, and a guide rod of the lifting cylinder 2406 passes through the suction support plate 2401 to be connected with the first lifting plate 2407 for driving the first lifting plate 2407 to lift. A transfer sleeve 2410 is fixed between the guide rod of the lifting cylinder 2406 and the first lifting plate 2407, and when the first lifting plate 2407 is lifted, the buffer plate 2412 is positioned by means of the transfer sleeve 2410. The top of the transfer sleeve 2410 is provided with an inclined nesting surface 2411, which guides by virtue of the nesting surface 2411 when nesting the buffer plate 2412, ensuring that the transfer sleeve 2410 is successfully inserted into the transfer sleeve hole 2413.

The bottom of the first lifting plate 2407 is fixed with a connecting column 2409, and the second lifting plate 2408 is fixed at the bottom of the connecting column 2409, and is lifted synchronously with the first lifting plate 2407. The lower guide sleeve 2415 is fixed on top of the second lifting plate 2408, and the lower guide post 2414 penetrates through the second lifting plate 2408 and the lower guide sleeve 2415, and the lower guide post 2414 is used for guiding the lifting of the lower guide sleeve 2415. The buffer plate 2412 is fixed on top of two sets of lower guide posts 2414, the transfer sleeve hole 2413 vertically penetrates through the buffer plate 2412, the diameter of the transfer sleeve hole 2413 is equal to that of the transfer sleeve 2410, when the first lifting plate 2407 ascends, the second lifting plate 2408 and the lower guide sleeve 2415 are driven to ascend synchronously, under the guiding effect of the sleeving surface 2411, the transfer sleeve 2410 penetrates through the transfer sleeve hole 2413, when the first lifting plate 2407 abuts against the lower surface of the buffer plate 2412, the lower guide sleeve 2415 also abuts against the lower surface of the buffer plate 2412, and then the first lifting plate 2407 drives the buffer plate 2412 to ascend, so that the circular saw blade at the initial positioning structure 1 is taken away.

The bottom of lower guide pillar 2414 is fixed with and shifts fixed plate 2417, and lower spring 2416 overlaps on lower guide pillar 2414, and the top of lower spring 2416 supports the lower surface at second lifter plate 2408, and the bottom of lower spring 2416 supports the upper surface at shifting fixed plate 2417, under the deformation effect of lower spring 2416, when pressing from both sides the circular saw blade, provides a cushioning effect, avoids pressing the circular saw blade. The transfer posts 2418 are circumferentially fixed to the lower surface of the transfer plate 2417 for sucking up the circular saw blade at the initial positioning structure 1 (the transfer posts 2418 are common electromagnets).

The detailed flow of the suction of the circular saw blade by the transfer structure 2 is as follows:

first lifting cylinder 2406 drives first lifting plate 2407 and second lifting plate 2408 to descend (in this process, under the influence of gravity, transfer sleeve 2410 is penetrated in transfer sleeve hole 2413, buffer plate 2412 is propped against the upper surface of first lifting plate 2407), when transfer suction column 2418 is propped against the upper surface of the circular saw blade, circular saw blade is sucked by transfer suction column 2418 after power is applied, in order to improve the sucking firmness, the circular saw blade is prevented from falling during subsequent transfer, therefore lifting cylinder 2406 needs to continuously press downwards for a small distance. In the pressing down process of the section, the position of the buffer plate 2412 is not changed, the first lifting plate 2407, the second lifting plate 2408 and the lower guide sleeve 2415 move downwards, meanwhile, the transfer sleeve 2410 descends to leave the transfer sleeve hole 2413, the lower spring 2416 is compressed and deformed by the second lifting plate 2408, and the elastic downward pressure, rather than the rigid downward pressure, applied to the transfer suction column 2418 is acted by the reverse acting force of the lower spring 2416, so that the suction firmness is ensured, and the surface of the circular saw blade is not crushed; after the suction is completed, the lifting cylinder 2406 drives the first lifting plate 2407, the second lifting plate 2408 and the lower guide sleeve 2415 to lift, under the guiding action of the sleeving surface 2411, the transfer sleeve 2410 penetrates through the transfer sleeve hole 2413 again, when the first lifting plate 2407 abuts against the lower surface of the buffer plate 2412, the lower guide sleeve 2415 also abuts against the lower surface of the buffer plate 2412, and then the first lifting plate 2407 drives the buffer plate 2412 to lift, so that the circular saw blade at the initial positioning structure 1 is taken away.

Step three: a group of secondary positioning structures 3 are arranged and are used for receiving the circular saw blade after the primary centering positioning transferred in the step two and carrying out secondary centering positioning on the circular saw blade;

as shown in fig. 8, a schematic structural view of the secondary positioning structure 3 is provided for receiving the circular saw blade after the preliminary centering positioning transferred thereto by the transfer structure 2, and performing the re-centering positioning of the circular saw blade after the preliminary centering. The secondary positioning structure 3 includes a secondary positioning bottom plate 301, an extension plate 302, a first guide plate 303, a second guide plate 304, a secondary positioning fixing plate 305, a guide slot 306, a driving plate 307, a driven plate 308, a driving guide bar 309, a blocking portion 310, a pushing block 311, a driven guide bar 312, a pushing slot 313, a protruding block 314, a groove 315, a secondary positioning pushing cylinder 316, a secondary positioning tray 317, a secondary positioning cushion block 318, a carrier plate 319, a carrier slot 320, and an arc portion 321.

As shown in fig. 9, the secondary positioning base 301 is schematically shown, the secondary positioning base 301 is fixed on the machine by a column, and the extension plate 302 is integrally connected to one side of the secondary positioning base 301 for mounting the secondary positioning pushing cylinder 316. Through slots are vertically formed in the secondary positioning bottom plate 301, so that the secondary positioning tray 317 is convenient to place. The first guide plate 303, the second guide plate 304 and the secondary positioning fixing plate 305 are fixed on the top of the secondary positioning bottom plate 301, the second guide plate 304 has two groups and is arranged opposite to each other, and the first guide plate 303 and the secondary positioning fixing plate 305 are arranged opposite to each other (the height of the secondary positioning fixing plate 305 is higher than that of the first guide plate 303 and the second guide plate 304, because the carrier plate 319 is directly fixed on the inner side of the secondary positioning fixing plate 305, and the first guide plate 303 and the second guide plate 304 also need to be provided with the driving plate 307 and the pushing block 311 to fix the carrier plate 319). The first guide plate 303 and the second guide plate 304 are provided with guide grooves 306 for guiding the movement of the driving plate 307 and the pushing block 311 (the sections of the guide grooves 306 are in dovetail grooves, so that the driving plate 307 and the pushing block 311 do not shake left and right when moving).

As shown in fig. 11, a schematic structure of the push block 311 is shown, and a driven guide bar 312 matched with the guide groove 306 is disposed at the bottom of the push block 311. The top of the push block 311 is provided with a push groove 313, the push groove 313 is matched with the driven plate 308, when the driving plate 307 moves, the driven plate 308 is driven to synchronously move, and the push block 311 is driven to synchronously move inwards by virtue of the matching of the driven plate 308 and the push groove 313. The inner side of the pushing slot 313 is relatively provided with a groove 315 for limiting the protruding block 314 on the driven plate 308, and the accuracy and timeliness of the movement of the pushing block 311 are ensured by virtue of the limiting cooperation of the protruding block 314 and the groove 315, so that the driven plate 308 is prevented from shaking in the pushing slot 313.

As shown in fig. 10, a schematic structure of the active plate 307 is shown, and an active conductive bar 309 matching with the guiding groove 306 is integrally connected to the bottom of the active plate 307. The driven plates 308 are two groups, are integrally connected to two sides of the driving plate 307 and are matched with the pushing grooves 313, and when the driving plate 307 moves, the driven plates 308 and the pushing grooves 313 are matched to drive the two groups of pushing blocks 311 to synchronously move inwards or outwards. The blocking part 310 is arranged at the inner side of the connection part of the driving plate 307 and the driven plate 308, the moving driven plate 308 drives the push block 311 to move inwards, when the blocking part 310 abuts against the push block 311, the driven plate 308 cannot move forwards continuously, at the moment, the push block 311 cannot move inwards continuously, and the movement of the driven plate 308 is limited by means of the blocking part 310 (when the blocking part 310 abuts against the push block 311, the position of the push block 311 and the driving plate 307 is at the centering position, namely, in the state, the arc-shaped parts 321 at the inner sides of the four groups of carrier plates 319 enclose a circular saw blade placing groove with the same size as a circular saw blade).

The bottom of the cylinder body of the secondary positioning pushing cylinder 316 is pivoted on the extension plate 302, the guide rod of the secondary positioning pushing cylinder 316 is pivoted on the driving plate 307, and the driving plate 307 is pushed to move under the pushing action of the secondary positioning pushing cylinder 316. As shown in fig. 12, the carrier plate 319 is fixed on the inner sides of the driving plate 307, the pushing block 311 and the secondary positioning fixing plate 305 and is in the same plane. The inner side of the carrier plate 319 is provided with a carrier groove 320 for placing a circular saw blade, and the arc-shaped portion 321 is arranged on the outer side of the carrier groove 320 and is matched with the edge of the circular saw blade.

As shown in fig. 13, the secondary positioning tray 317 passes through the through groove on the secondary positioning bottom plate 301 under the driving of the lifting cylinder, and when the circular saw blades with different thicknesses are faced, the height of the secondary positioning tray 317 can be properly adjusted, so that the circular saw blade and the carrier groove 320 are still in the same plane, and the universality is improved. The secondary positioning cushion block 318 is fixed on top of the secondary positioning tray 317 and is used for bearing the circular saw blade, the material of the secondary positioning cushion block 318 is rubber, and friction between the circular saw blade and the secondary positioning tray 317 is avoided to scratch the lower surface of the saw blade when the circular saw blade is centered later. In the secondary centering process, the circular saw blade is sucked onto the secondary positioning cushion block 318 on the secondary positioning tray 317 by the transfer structure 2, the secondary positioning pushing cylinder 316 is started, the secondary positioning pushing cylinder 316 drives the driving plate 307 to move inwards, and meanwhile, the pushing block 311 is driven to move inwards synchronously by virtue of the cooperation of the driven plate 308 and the pushing groove 313 (when the blocking part 310 abuts against the side surface of the pushing block 311, the arc-shaped parts 321 of the four groups of carrier plates 319 form a circular saw blade placing groove), and the three groups of carrier plates 319 push the circular saw blade inwards until the circular saw blade abuts against the arc-shaped parts 321 of the four groups of carrier plates 319.

Step four: a group of transfer structures 4 are arranged for transferring the circular saw blade at the secondary positioning structure 3;

as shown in fig. 14, the transfer structure 4 is schematically shown, and the transfer structure 4 is connected to an external mechanical arm, and there are two groups of transfer structures 4, one group is used for taking the circular saw blade after the secondary positioning to the detection structure 5, and the other group is used for taking the circular saw blade after the detection to the discharging structure 6. The transfer structure 4 includes a transfer plate 41 and a transfer mechanism 42, the transfer plate 41 is connected to an external robot, and the transfer mechanism 42 is fixed to both sides of the transfer plate 41 to clamp the circular saw blade.

The transfer mechanism 42 includes a transfer guide sleeve 421, a transfer guide post 422, a transfer synchronizing plate 423, a transfer spring 424, a transfer fixing plate 425, and a transfer suction post 426. The transfer guide sleeve 421 is fixed on the top of the transfer plate 41, the transfer guide posts 422 penetrate through the transfer guide sleeve 421 and the transfer plate 41, and the transfer synchronization plate 423 is fixed on the top of the two sets of transfer guide posts 422, so that the two sets of transfer guide posts 422 are ensured to synchronously lift. The transfer fixing plate 425 is fixed to the bottom of the transfer guide post 422, and moves downward by the transfer plate 41. The transfer spring 424 is sleeved on the transfer guide post 422, the top of the transfer spring 424 is propped against the lower surface of the transfer plate 41, the bottom of the transfer spring 424 is propped against the transfer fixing plate 425, and a reverse elastic force is provided when the circular saw blade is sucked by virtue of the deformation action of the transfer spring 424, so that the circular saw blade is prevented from being crushed. The transfer suction column 426 is fixed to the bottom of the transfer fixing plate 425, and the circular saw blade is sucked by the transfer suction column 426 (the transfer suction column 426 is a common electromagnet).

When the transferring suction column 426 is propped against the upper surface of the circular saw blade to be transferred, the circular saw blade is sucked by the electrified transferring suction column 426, so that the circular saw blade is prevented from falling down during transferring, the transferring plate 41 is driven by the external manipulator to continuously move downwards for a certain distance, in the process, the position of the transferring synchronization plate 423 is not changed, and the transferring spring 424 applies downward elastic pressure to the transferring fixing plate 425 instead of rigid pressure due to deformation, so that the reliability of the transferring suction column 426 after sucking the circular saw blade is ensured, and the circular saw blade is prevented from being crushed.

Step five: a group of detection structures 5 are arranged for bearing the circular saw blade subjected to secondary centering positioning and transferred by the transfer structure 4, and detecting the flatness of the circular saw blade;

as shown in fig. 15, for the structural schematic diagram of the detecting structure 5, the circular saw blade after the secondary centering positioning is transferred to the detecting structure 5, and the detecting structure 5 completes the detection of the flatness of the circular saw blade. The detecting structure 5 includes a detecting chassis 51, a lower pressing mechanism 52, an upper pressing mechanism 53, a detecting mechanism 54, and a sensing block 55. The detection underframe 51 is fixed on the processing machine, the lower pressing mechanism 52 and the upper pressing mechanism 53 are respectively fixed on the detection underframe 51, the lower pressing mechanism 52 and the upper pressing mechanism 53 are respectively pressed on two sides of the circular saw blade, the circular saw blade is prevented from flying during detection, and the accuracy of the detection result can be improved. The detecting mechanism 54 is used for detecting the flatness of the circular saw blade.

As shown in fig. 16, the lower pressing mechanism 52 is schematically shown, and the lower pressing mechanism 52 is used for carrying the circular saw blade after the second centering and positioning transferred by the transferring mechanism 42, driving the circular saw blade to rise to abut under the upper pressing mechanism 53, and driving the circular saw blade to rotate together with the upper pressing mechanism 53. The lower pressing mechanism 52 includes a lower pressing slide rail 5201, a lower pressing slider 5202, a lower pressing gear 5203, a lower pressing toothed belt 5204, a lower pressing conveying plate 5205, a rotary cylinder 5206, a lower pressing rotary column 5207, a lower pressing cushion block 5208, a supporting bar 5209 and a side cushion block 5210. The lifting plate is mounted on the inner bottom of the detection chassis 51 through a lifting sliding table, and the lifting plate is driven to do lifting motion through the lifting sliding table (the lifting sliding table and the lifting plate are not shown in the figure). The mode that lower pressfitting slide rail 5201 passes through the screw fastening is fixed at the top of lifter plate, and lower pressfitting slider 5202 slidable mounting is on lower pressfitting slide rail 5201, and lower pressfitting transport board 5205 is fixed at the top of lower pressfitting slider 5202, and when lower pressfitting transport board 5205 removed, it moves in step to drive lower pressfitting slider 5202 to stability when improving lower pressfitting transport board 5205 and remove.

The top at the lifter plate is installed in the rotation of lower pressfitting gear 5203, and lower pressfitting toothed belt 5204 winds to establish on lower pressfitting gear 5203, and by lower pressfitting gear 5203 drive down pressfitting toothed belt 5204 rotate (lower pressfitting toothed belt 5204's inboard is provided with lower pressfitting gear 5203 matched with protruding tooth structure, avoids down pressfitting toothed belt 5204 to take place the phenomenon of skidding). The lower pressing conveying plate 5205 is connected with the lower pressing toothed belt 5204 through a fixing strip, and the lower pressing conveying plate 5205 is driven to move by the lower pressing toothed belt 5204.

The cylinder body of the rotary cylinder 5206 is fixed at the top of the lower pressing conveying plate 5205, the lower pressing rotary column 5207 is fixed on the rotary part of the rotary cylinder 5206, and the rotary cylinder 5206 drives the lower pressing rotary column 5207 to rotate. The lower pressfitting cushion 5208 circumference is fixed at the top of lower pressfitting column 5207 for support the saw blade that waits to detect (lower pressfitting cushion 5208's material is rubber, avoids damaging the lower surface of saw blade). The support bar 5209 is fixed on the cylinder body of the rotary cylinder 5206, the side cushion block 5210 is fixed at the top of the support bar 5209 and is in the same plane with the lower pressing cushion block 5208, the lower pressing cushion block 5208 is used for supporting the central part of the circular saw blade, the side cushion block 5210 is used for supporting the edge part of the circular saw blade, and the influence on the detection result due to lack of support on the edge of the circular saw blade is avoided during detection (the material of the side cushion block 5210 is rubber, and the lower surface of the circular saw blade is prevented from being damaged).

During detection, the circular saw blade is placed at the lower pressing mechanism 52 by the transfer structure 4 (the middle part of the circular saw blade is propped against the lower pressing cushion block 5208, the edge part of the circular saw blade is propped against the side cushion block 5210), then the lifting sliding table drives the lifting plate to lift, and in the lifting process of the lifting plate, the lower pressing cushion block 5208 and the side cushion block 5210 drive the circular saw blade to synchronously lift to the position of the upper pressing mechanism 53, so that the circular saw blade is fixed, and the accuracy of a subsequent detection result is improved.

As shown in fig. 18, the upper pressing mechanism 53 and the lower pressing mechanism 52 jointly press the circular saw blade, so as to avoid the circular saw blade from flying during rotation, and improve the accuracy of the detection result of the flatness of the circular saw blade. The upper press mechanism 53 includes an upper press frame 5301, a bearing housing 5302, an upper press rotating column 5303, a press head 5304, and an inclined press surface 5305. The upper press frame 5301 is fixed on the top of the detection chassis 51 and extends toward one side of the lower press mechanism 52, and the bearing housing 5302 is fixed on the bottom of the upper press frame 5301 for mounting the upper press rotary column 5303.

The upper pressing rotary column 5303 is rotatably mounted in the bearing seat 5302 through a bearing, the pressing head 5304 is integrally connected to the bottom of the upper pressing rotary column 5303, the inclined pressing surface 5305 is obliquely arranged at the bottom of the pressing head 5304 and is matched with a central mounting hole of a circular saw blade (the diameter of the pressing head 5304 is larger than that of the central mounting hole of the circular saw blade, when the lower pressing mechanism 52 drives the circular saw blade to ascend, the central mounting hole of the circular saw blade can prop against the outer side of the inclined pressing surface 5305, so that the relative fixation of the circular saw blade and the pressing head 5304 is realized, and when the lower pressing mechanism 52 drives the circular saw blade to rotate, the pressing head 5304 is driven to synchronously rotate, and the shaking or flying of the circular saw blade is avoided when the circular saw blade rotates. The upper pressing rotary column 5303 and the pressing head 5304 are made of rubber, so that elastic pressing between the pressing head 5304 and the circular saw blade is ensured, and the surface of the circular saw blade is prevented from being damaged.

As shown in fig. 17, the detecting mechanism 54 is schematically shown, and the detecting mechanism 54 is fixed to the inner side of the upper pressing frame 5301 for detecting the flatness of the circular saw blade. The detection frame 541 is fixed on the inner side of the upper pressing frame 5301, and the detection pushing cylinder 542 is fixed on the detection frame 541 and is used for driving the pushing frame 543 to move along the radial direction of the circular saw blade, so as to meet the flatness detection of any position of the surface of the circular saw blade. The detection lifting cylinder 544 is fixed on the pushing frame 543 for driving the detection lifting plate 545 to lift. The displacement sensor 546 is fixed to the bottom of the detection lifter plate 545 and abuts against the upper surface of the circular saw blade, and the flatness of the current circular saw blade is detected based on the displacement sensor 546.

The detection guide sleeve 547 and the detection guide post 548 serve to guide the lifting movement of the detection lifting plate 545. The sensing block 55 is installed on one side of the detection chassis 51 through a lifting cylinder, and when the transfer structure 4 absorbs the detected circular saw blade and drives the circular saw blade to ascend, the sensing block 55 synchronously ascends to a preset height under the drive of the lifting cylinder. The transfer structure 4 is provided with an infrared detector matched with the sensing block 55 to detect the position height of the current sensing block 55, so that the transfer structure 4 is controlled to drive the circular saw blade to rise to a height higher than the sensing block 55, and collision interference with the discharging structure 6 is avoided when the circular saw blade is placed subsequently.

The detailed detection process of the detection structure 5 is as follows:

the circular saw blade is placed at the position of the lower pressing mechanism 52 by the transfer structure 4 (the middle part of the circular saw blade is propped against the lower pressing cushion block 5208, the edge part of the circular saw blade is propped against the side cushion block 5210), then the lifting sliding table drives the lifting plate to lift, the lower pressing cushion block 5208 and the side cushion block 5210 drive the circular saw blade to synchronously lift in the lifting plate lifting process, until the central mounting hole of the circular saw blade is propped against the inclined pressing surface 5305 of the pressing head 5304 (when the circular saw blade lifts and is propped against the inclined pressing surface 5305, the pressing head 5304 and the upper pressing rotating column 5303 are driven to elastically deform, so that the relative fixation of the circular saw blade and the upper pressing mechanism 53 is ensured), and then the lower pressing rotating column 5207 drives the pressing head 5304 and the upper pressing rotating column 5303 to synchronously rotate when the circular saw blade rotates, and the flatness detection is carried out by the displacement sensor 546.

Step six: a group of discharging structures 6 are arranged for collecting the detected circular saw blade;

as shown in fig. 19, which is a schematic structural diagram of the discharging structure 6, the detected circular saw blade is placed at the discharging structure 6, and the discharging structure 6 includes a discharging frame 601, a discharging groove 602, a material plate 603, a positioning column 604, a material column 605 and a material tray 606. The discharging frame 601 is fixed on the processing machine, and a discharging groove 602 is formed in the inner side of the top of the discharging frame 601 and used for placing a material plate 603. The positioning columns 604 are fixed at intervals at the top of the discharging groove 602, positioning holes matched with the positioning columns 604 are formed in the bottom of the material plate 603, and the material plate 603 is positioned by means of the discharging groove 602 and the positioning columns 604.

The stock column 605 is fixed on top of the stock plate 603, the diameter of the stock column 605 is equal to the diameter of the center mounting hole of the circular saw blade, and the circular saw blade after detection is sleeved on the stock column 605. The material tray 606 passes through the material column 605 and is driven by the lifting cylinder below to lift along the material column 605, and the material tray 606 is used for bearing the detected circular saw blade. When the transfer structure 4 is sleeved on the material column 605 with a circular saw blade, the lifting cylinder drives the material tray 606 to descend by the thickness of the circular saw blade, so that the circular saw blade is prevented from being piled up at the same height to affect the work of the transfer structure 4.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (10)

1. The multi-stage flatness detection method for the circular saw blade is characterized by comprising the following steps of:

step one: a group of initial positioning structures (1) are arranged for initially centering and positioning a plurality of groups of circular saw blades which are stacked;

step two: a group of transfer structures (2) are arranged for transferring the circular saw blade at the initial positioning structure (1);

step three: a group of secondary positioning structures (3) are arranged and are used for receiving the circular saw blade after the primary centering positioning transferred in the step two and carrying out secondary centering positioning on the circular saw blade;

step four: a group of transfer structures (4) are arranged for transferring the circular saw blade at the secondary positioning structure (3);

step five: a group of detection structures (5) are arranged and are used for bearing the circular saw blade subjected to secondary centering positioning and transferred by the transfer structure (4), and detecting the planeness of the circular saw blade;

step six: a group of discharging structures (6) are arranged for collecting the detected circular saw blade.

2. The method for detecting the multistage flatness of a circular saw blade according to claim 1, wherein: in the first step, the primary positioning structure (1) comprises a primary positioning bottom plate (11), a primary positioning plate (17) arranged at the top of the primary positioning bottom plate (11) in a synchronous and relatively moving manner, and a plurality of groups of primary positioning columns (18) fixed at the top of the primary positioning plate (17) at intervals, wherein the plurality of groups of primary positioning columns (18) move inwards to finish primary centering positioning of the circular saw blade, and the primary positioning plate (17) is in a V shape.

3. The method for detecting the multistage flatness of a circular saw blade according to claim 2, characterized by: in the second step, the transfer structure (2) comprises a transfer frame (21), a transfer plate (22) movably arranged at the top of the transfer frame (21), a transfer mechanism (23) fixed at the top of the transfer frame (21) and used for driving the transfer plate (22) to move, and a suction mechanism (24) fixed at one side of the transfer plate (22), wherein the suction mechanism (24) is used for sucking a circular saw blade at the inner side of the primary positioning column (18) and placing the circular saw blade on the secondary positioning structure (3).

4. The method for detecting the multistage flatness of a circular saw blade according to claim 3, wherein: in the third step, the secondary positioning structure (3) comprises four groups of carrier plates (319) which are in cross distribution, a carrier groove (320) which is formed in the inner side of the carrier plate (319) and an arc-shaped part (321) which is arranged on the outer side of the carrier groove (320), one group of carrier plates (319) are fixed, the other three groups of carrier plates (319) synchronously move inwards to the four groups of arc-shaped parts (321) to form a saw blade placing groove which is matched with the circular saw blade, and the transfer structure (2) places the circular saw blade subjected to primary centering positioning in the saw blade placing groove for secondary centering positioning.

5. The method for detecting the multistage flatness of a circular saw blade according to claim 1, wherein: in the fifth step, the detecting structure (5) comprises a detecting underframe (51), a lower pressing mechanism (52) arranged at the bottom of the detecting underframe (51), an upper pressing mechanism (53) fixed at the top of the detecting underframe (51) and a detecting mechanism (54) fixed at one side of the upper pressing mechanism (53), wherein the lower pressing mechanism (52) is used for bearing a circular saw blade which is transferred by the transferring structure (4) and is subjected to secondary centering positioning, and drives the circular saw blade to ascend and drive the circular saw blade to rotate together with the upper pressing mechanism (53).

6. The method for detecting the multistage flatness of a circular saw blade according to claim 2, characterized by: the primary positioning structure (1) further comprises a primary adjusting plate (12) which is slidably mounted on the primary positioning bottom plate (11), an adapter plate (14) which is fixed at the top of the primary positioning bottom plate (11), a pivoting plate (15) which is rotationally connected to the top of the adapter plate (14), and an adjusting rod (16) which is pivoted with the pivoting plate (15) at one end and pivoted with the primary adjusting plate (12) at the other end, wherein the primary positioning plate (17) is fixed on the primary adjusting plate (12).

7. The method for detecting the multistage flatness of a circular saw blade according to claim 3, wherein: the suction mechanism (24) comprises a suction supporting plate (2401) fixed on one side of the transfer plate (22), a first lifting plate (2407) which is arranged below the suction supporting plate (2401) in a flexible lifting manner, a second lifting plate (2408) fixed at the bottom of the first lifting plate (2407), a transfer fixing plate (2417) which is elastically installed at the bottom of the second lifting plate (2408), and a transfer suction column (2418) which is circumferentially fixed at the bottom of the transfer fixing plate (2417).

8. The method for detecting the multistage flatness of a circular saw blade according to claim 7, wherein: the suction mechanism (24) further comprises a lower guide sleeve (2415) fixed at the top of the second lifting plate (2408), a lower guide post (2414) fixed at the top of the transfer fixing plate (2417) and penetrating through the second lifting plate (2408) and the lower guide sleeve (2415), a buffer plate (2412) fixed at the top of the lower guide post (2414), a transfer sleeve hole (2413) penetrating through the buffer plate (2412), a transfer sleeve (2410) fixed at the top of the first lifting plate (2407) and matched with the transfer sleeve hole (2413), a sleeving surface (2411) arranged at the top of the transfer sleeve (2410) and a lower spring (2416) sleeved on the lower guide post (2414);

when the first lifting plate (2407) is lifted, the transfer sleeve (2410) is lifted and inserted into the transfer sleeve hole (2413), so as to drive the buffer plate (2412) and the transfer fixing plate (2417) to synchronously lift;

when the first lifting plate (2407) descends, the second lifting plate (2408) compresses the lower spring (2416) and the transfer sleeve (2410) exits the transfer sleeve bore (2413).

9. The method for detecting the multistage flatness of a circular saw blade according to claim 5, wherein: lower pressfitting mechanism (52) are including setting up lower pressfitting transport board (5205) in detecting chassis (51), rotationally install lower pressfitting column (5207) at lower pressfitting transport board (5205) top, interval are fixed lower pressfitting cushion (5208) at lower pressfitting column (5207) top and set up side cushion (5210) in lower pressfitting cushion (5208) outside, lower pressfitting cushion (5208) and side cushion (5210) are used for bearing the saw blade of waiting to detect.

10. The method for detecting the multistage flatness of a circular saw blade according to claim 9, wherein: the upper pressing mechanism (53) comprises an upper pressing frame (5301) fixed at the top of the detection chassis (51), an upper pressing rotary column (5303) rotatably mounted at the bottom of the upper pressing frame (5301), a pressing head (5304) integrally connected to the bottom of the upper pressing rotary column (5303) and an inclined pressing surface (5305) obliquely arranged at the bottom of the pressing head (5304), and the lower pressing mechanism (52) drives the circular saw blade to rise to butt against the inclined pressing surface (5305) of the pressing head (5304) and drives the circular saw blade to synchronously rotate with the pressing head (5304).