CN115070540A

CN115070540A - Cutting rule inclined plane grinding machine tool

Info

Publication number: CN115070540A
Application number: CN202210847821.3A
Authority: CN
Inventors: 张广智
Original assignee: Jinjiang Measuring Tools Co ltd
Current assignee: Jinjiang Measuring Tools Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-09-20
Anticipated expiration: 2042-07-19
Also published as: CN115070540B

Abstract

The invention relates to the technical field of measuring tool processing, and particularly provides a processing machine tool for grinding an inclined plane of a caliper, which comprises a feeding table, wherein the feeding table, a processing table and a discharging table are sequentially arranged; the front end of the ruler table is provided with a bayonet positioning pin and a push rod, a second guide rod is fixed on the push rod, the lower end of the push rod is connected with a piston rod of a front end air cylinder, and after the main ruler is positioned by a clamping device, the main ruler is tightly pressed on the ruler table, so that the main rulers of different specifications can be clamped.

Description

Cutting rule inclined plane grinding machine tool

Technical Field

The invention relates to the technical field of measuring tool machining, in particular to a machining tool for grinding an inclined plane of a caliper.

Background

At present, the outer measuring surface inclined plane of slide caliper rule body, the interior measuring surface inclined plane of edge of a knife respectively is processed by a grinding machine, every work piece needs two of different equipment, slide caliper rule are transported between different equipment and can prolong the time that processing needs greatly, when pressing from both sides tight the slide caliper rule, the middle and upper unloading of course of working is operated respectively, lead to process time longer, on the other hand, processing equipment is adding man-hour to the slide caliper rule of different specifications, often need to change different anchor clamps and carry out the centre gripping to slide caliper rule, the suitability of equipment has been reduced, at the in-process of changing anchor clamps, also can waste a large amount of time, be unfavorable for the small-batch production of slide caliper rule.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the invention provides a processing machine tool for grinding an inclined plane of a caliper, which aims to solve the problem that the processing machine tool is difficult to process calipers with different specifications.

The technical scheme adopted by the invention for solving the technical problem is as follows: a processing machine tool for grinding an inclined plane of a caliper comprises a feeding table, a processing table and a discharging table which are sequentially arranged, and further comprises a feeding device, wherein the feeding device is erected above the feeding table, the processing table and the discharging table, the feeding device can sequentially convey materials to the feeding table, the processing table and the discharging table, a moving device is arranged below the processing table and used for adjusting the position of the processing table, two sides of the processing table are respectively provided with a grinding wheel unit, the grinding wheel unit is provided with a grinding head, the processing table is provided with a clamping device, the clamping device comprises a caliper table, a side positioning pin is arranged at the position of one side edge of the caliper table, a clamping strip is slidably arranged at the other side of the caliper table, the clamping strip is fixedly connected with a clamping plate, and the clamping plate is slidably arranged on a first guide rod, the one end of first guide bar runs through the chi platform, the other end of first guide bar is fixed with the connecting plate, the connecting plate with the butt has buffer spring between the splint, clamping device still includes side cylinder and gyration die clamping cylinder, the piston rod of side cylinder with the connecting plate is connected, gyration die clamping cylinder has the chuck, the chuck is used for compressing tightly the main scale on the chi platform.

Preferably, the front end of the ruler table is provided with a bayonet positioning pin and a push rod, the bayonet positioning pin is fixed at a position, close to the front end, of the ruler table, a second guide rod is fixed on the push rod, the second guide rod is slidably mounted on the ruler table, the upper end of the push rod extends out of the upper end face of the ruler table, and the lower end of the push rod is connected with a piston rod of a front-end air cylinder.

Preferably, an ejection mechanism is further arranged at a position, close to the middle, of the ruler table and comprises an ejector block, a groove is formed in the ruler table and corresponds to the ejector block, the ejector block is slidably mounted in the groove, a sliding rod is vertically fixed to the lower end of the ejector block and is in sliding connection with the ruler table, the ejection mechanism further comprises a push block, the upper end of the push block is provided with a slope surface, the lower end of the push block is fixedly connected with the first guide rod through a transverse rod, the push block can be inserted into the groove below the ejector block, a through groove is further formed in the push block, and when the push block is inserted into the groove, the sliding rod is clamped with the through groove.

Preferably, the clamping strip is provided with a movable bayonet pin at the end part close to the front end of the ruler platform.

Preferably, the lower end of the connecting plate is bent toward the clamping plate to form a bent portion.

Preferably, the mobile device comprises a longitudinal screw rod sliding table module and a transverse screw rod sliding table module, the transverse screw rod sliding table module is installed on the sliding table of the longitudinal screw rod sliding table module, and the machining table is installed on the sliding table of the transverse screw rod sliding table module.

As preferred, material feeding unit includes no pole cylinder, link, mounting bracket, slide rail, lift cylinder and finger cylinder, the slide rail passes through the crossbeam erects the top of processing platform, the link slidable mounting be in on the slide rail, the one end of link with no pole cylinder body is connected, the other end and the mounting bracket fixed connection of link, two lift cylinder mirror symmetry set up the both ends of mounting bracket, the finger cylinder is installed the piston rod tip of lift cylinder.

Preferably, the grinding wheel unit still includes stand, lift lead screw slip table module, lifter plate, grinding wheel motor and speed reducer, the stand sets up the both sides of processing platform, lift lead screw slip table module is installed on the stand, the lifter plate with the slip table fixed connection of lift lead screw slip table module, grinding wheel motor with the speed reducer is fixed on the lifter plate, grinding wheel motor's output shaft pass through the pulley group with the input shaft of speed reducer, the bistrique is fixed on the output shaft of speed reducer.

Preferably, the feeding table and the discharging table are both provided with a storage bin, the storage bin comprises a plurality of vertically arranged limiting columns, a plurality of limiting holes are formed in the feeding table and the discharging table, and the limiting columns are inserted into the limiting holes.

The clamping device is arranged, and the main scale is tightly pressed on the scale table after being positioned by the clamping device, so that the clamping operation of the main scales with different specifications is realized.

And secondly, the ejection mechanism is arranged, after the main scale is processed, the main scale is ejected through the ejection mechanism, so that the main scale is separated from the scale table, and the main scale is conveniently taken down.

And thirdly, the feeding and discharging are synchronously realized through the feeding device, and the feeding and discharging efficiency during processing is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of a preferred embodiment of a machine tool for grinding a bevel of a caliper according to the present invention;

FIG. 2 is a schematic diagram showing the positional relationship among a feeding table, a processing table, a discharging table and a feeding device of a machine tool for grinding a caliper bevel according to the present invention;

FIG. 3 is a schematic structural view of a clamping device of a processing machine tool for grinding an inclined plane of a caliper of the present invention;

FIG. 4 is a schematic structural view of a push rod and a chuck of a machine tool for grinding an inclined plane of a caliper according to the present invention;

FIG. 5 is a schematic structural diagram of a connecting plate of a machine tool for grinding an inclined plane of a caliper according to the present invention;

FIG. 6 is a schematic structural view of a feeding device of a processing machine tool for grinding an inclined plane of a caliper according to the present invention;

fig. 7 is a schematic structural view of a grinding wheel unit of a machine tool for grinding a caliper bevel according to the present invention.

Reference numerals: 1. a feeding table; 2. a processing table; 3. a blanking table; 4. a feeding device; 5. a mobile device; 6. a grinding wheel unit; 7. grinding heads; 8. a clamping device; 9. a ruler table; 10. a side positioning pin; 11. clamping strips; 12. a splint; 13. a first guide bar; 14. a connecting plate; 15. a buffer spring; 16. a side cylinder; 17. a rotary clamping cylinder; 18. a chuck; 19. a bayonet positioning pin; 20. a push rod; 21. a second guide bar; 22. a front end cylinder; 23. a top block; 24. a groove; 26. Pushing a block; 27. a slope surface; 28. a cross bar; 29. a through groove; 30. moving the bayonet pin; 31. a bending part; 32. a longitudinal screw rod sliding table module; 33. a transverse screw rod sliding table module; 34. a rodless cylinder; 35. a connecting frame; 36. a mounting frame; 37. a slide rail; 38. a lifting cylinder; 39. a finger cylinder; 40. a cross beam; 41. a column; 42. a lifting screw rod sliding table module; 43. a lifting plate; 44. a grinding wheel motor; 45. a speed reducer; 46. a pulley set; 47. a limiting column.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 to 7, the present invention provides an embodiment of a machine tool for grinding an inclined surface of a caliper, comprising a feeding table 1, a processing table 2, a discharging table 3 and a feeding device 4, wherein the feeding table 1, the processing table 2 and the discharging table 3 are sequentially arranged, the feeding device 4 is arranged above the feeding table 1, the processing table 2 and the discharging table 3, the feeding device 4 can sequentially convey materials to the feeding table 1, the processing table 2 and the discharging table 3, the feeding device 4 comprises a rodless cylinder 34, a connecting frame 35, a mounting frame 36, a slide rail 37, a lifting cylinder 38 and a finger cylinder 39, the slide rail 37 is arranged above the processing table 2 through a cross beam 40, the connecting frame 35 is slidably mounted on the slide rail 37, one end of the connecting frame 35 is connected with the rodless cylinder 34, the other end of the connecting frame 35 is fixedly connected with the finger cylinder 36, the connecting frame 35 is driven to move through the rodless cylinder 34, the connecting frame 35 is guided by the slide rail 37 when moving, so that the connecting frame 35 can move stably, two lifting cylinders 38 are arranged at two ends of the mounting frame 36 in mirror symmetry, when the connecting frame 35 moves, the two lifting cylinders 38 can be driven to move together, the finger cylinder 39 is arranged at the end part of the piston rod of the lifting cylinder 38, when the main ruler of the caliper is processed, the rodless cylinder 34 moves the connecting frame 35, so that the first lifting cylinder 38 is positioned above the feeding table 1, the second lifting cylinder 38 is positioned above the processing table 2, then the finger cylinders 39 are driven by the two lifting cylinders 38 to descend, the unprocessed main ruler on the feeding table 1 is clamped by the finger cylinder 39 on the first lifting cylinder 38, the processed main ruler on the processing table 2 is clamped by the finger cylinder 39 on the second lifting cylinder 38, and then the two lifting cylinders 38 are reset, the rodless cylinder 34 moves the connecting frame 35, so that the first lifting cylinder 38 moves to the position above the processing table 2, the second lifting cylinder 38 moves to the position above the blanking table 3, the finger cylinders 39 are driven by the two lifting cylinders 38 to descend, the unprocessed main ruler clamped by the finger cylinders 39 on the first lifting cylinder 38 is placed on the processing table 2, the processed main ruler clamped by the finger cylinders 39 on the second lifting cylinder 38 is placed on the blanking table 3, the feeding device 4 realizes synchronous feeding and blanking, and the feeding and blanking efficiency during processing is improved.

All be provided with the feed bin on material loading platform 1 and the unloading platform 3, the feed bin includes the spacing post 47 of six vertical settings, has seted up a plurality of spacing holes on material loading platform 1 and the unloading platform 3, and spacing post 47 inserts spacing downthehole, and the quantity and the mounted position of spacing post 47 can be adjusted according to the difference of main scale specification, have promoted the suitability of feed bin.

Processing platform 2's below is provided with mobile device 5, mobile device 5 is used for adjusting the position of processing platform 2, mobile device 5 includes vertical lead screw slip table module 32 and horizontal lead screw slip table module 33, horizontal lead screw slip table module 33 is installed on the slip table of vertical lead screw slip table module 32, processing platform 2 is installed on the slip table of horizontal lead screw slip table module 33, cooperate through vertical lead screw slip table module 32 and horizontal lead screw slip table module 33, adjust the position of processing platform 2 place, the main scale to processing platform 2 conveniently processes.

The two sides of the processing table 2 are respectively provided with a grinding wheel set 6, the grinding wheel set 6 is provided with a grinding head 7, the grinding wheel set 6 also comprises an upright post 41, a lifting screw rod sliding table module 42, a lifting plate 43, a grinding wheel motor 44 and a speed reducer 45, the upright post 41 is arranged on the two sides of the processing table 2, the lifting screw rod sliding table module 42 is arranged on the upright post 41, the lifting plate 43 is fixedly connected with the sliding table of the lifting screw rod sliding table module 42, the grinding wheel motor 44 and the speed reducer 45 are fixed on the lifting plate 43, the output shaft of the grinding wheel motor 44 is connected with the input shaft of the speed reducer 45 through a belt wheel set 46, the grinding head 7 is fixed on the output shaft of the speed reducer 45, the rotating speed of the grinding head 7 is controlled through the speed reducer 45, when the processing table 2 moves to the grinding wheel machine set 6, the lifting of the grinding head 7 is controlled by the lifting screw rod sliding table module 42, the height of the grinding head 7 is adjusted so that the grinding head 7 can machine the main scale on the machining table 2.

The machining table 2 is provided with a clamping device 8, the clamping device 8 comprises a scale table 9, a side positioning pin 10 is arranged at the position of one side edge of the scale table 9, a clamping strip 11 is slidably mounted at the other side of the scale table 9, the clamping strip 11 is fixedly connected with a clamping plate 12, the clamping plate 12 is slidably mounted on a first guide rod 13, one end of the first guide rod 13 penetrates through the scale table 9, a connecting plate 14 is fixed at the other end of the first guide rod 13, a buffer spring 15 is abutted between the connecting plate 14 and the clamping plate 12, the lower end of the connecting plate 14 is bent towards the clamping plate 12 to form a bent part 31, the clamping device 8 further comprises a side air cylinder 16 and a rotary clamping air cylinder 17, a piston rod of the side air cylinder 16 is connected with the connecting plate 14, and the rotary clamping air cylinder 17 is provided with a chuck 18;

the front end of the ruler platform 9 is provided with a bayonet positioning pin 19 and a push rod 20, the bayonet positioning pin 19 is fixed at the position of the ruler platform 9 close to the front end, the end part of the holding strip 11 close to the front end of the ruler platform 9 is provided with a movable bayonet pin 30, the movable bayonet pin 30 moves along with the holding strip 11, so that the positioning effect of main rulers with different specifications can be realized, after the main ruler is placed on the ruler platform 9, the outer diameter measuring claw of the main ruler is positioned through the bayonet positioning pin 19, the inner diameter measuring claw of the main ruler is positioned through the movable bayonet pin 30, the processing and positioning requirements of the main ruler are realized, the push rod 20 is fixed with a second guide rod 21, the second guide rod 21 is slidably arranged on the ruler platform 9, the push rod 20 is supported and guided through the second guide rod 21, the push rod 20 is prevented from shaking in the use process, the upper end of the push rod 20 extends out of the upper end surface of the ruler platform 9, so that the push rod 20 can be abutted against the end part of the main ruler, the lower end of the push rod 20 is connected with a piston rod of a front end cylinder 22;

the working principle of the clamping device 8 is as follows: firstly, a main ruler is placed on a ruler table 9, then a side air cylinder 16 pushes a connecting plate 14 to move towards the ruler table 9, the connecting plate 14 pushes a first guide rod 13, a buffer spring 15 and a clamping plate 12 to move, the clamping plate 12 drives a clamping strip 11 to move towards the main ruler and push the main ruler, so that the side surface of the main ruler is abutted with a side positioning pin 10, the buffer spring 15 is compressed at the moment, a bending part 31 is not abutted with the clamping plate 12, namely, the main ruler is pre-positioned by matching the clamping strip 11 with the side positioning pin 10, then a front end air cylinder 22 acts to drive a second guide rod 21 to move, the second guide rod 21 pulls a push rod 20 to move towards the end part of the main ruler and push the main ruler, so that an outer diameter measuring claw of the main ruler is abutted with a bayonet positioning pin 19, an inner diameter measuring claw of the main ruler is abutted with a moving bayonet pin 30 to perform accurate positioning, after the positioning is completed, a rotary clamping air cylinder 17 acts, and a chuck 18 of the rotary clamping air cylinder 17 tightly presses the main ruler on the ruler table 9, then, the side air cylinder 16 continues to operate to bring the bent portion 31 into contact with the clamp plate 12, thereby preventing the clamp plate 12 and the gib 11 from wobbling during processing.

The position of the ruler table 9 close to the middle part is also provided with an ejection mechanism, the ejection mechanism comprises an ejector block 23, a groove 24 is arranged on the ruler table 9 corresponding to the ejector block 23, the ejector block 23 is slidably arranged in the groove 24, the lower end of the ejector block 23 is vertically fixed with a slide rod, the slide rod is slidably connected with the ruler table 9, the ejector block 23 is lifted up through the slide rod, a gap is reserved between the lower end of the ejector block 23 and the bottom of the groove 24, the ejection mechanism also comprises a push block 26, the upper end of the push block 26 is provided with a slope 27, the lower end of the push block 26 is fixedly connected with a first guide rod 13 through a cross rod 28, the push block 26 can be inserted into the groove 24 from the gap below the ejector block 23, the push block 26 is also provided with a through groove 29, after the push block 26 is inserted into the groove 24, the slide rod is prevented from blocking the movement of the push block 26, after the main ruler is processed, the rotary clamping cylinder 17 is loosened, the side cylinder 16 acts to drive the first guide rod 13 to reset, first guide bar 13 resets in-process and drives ejector pad 26 and remove towards recess 24, ejector pad 26 is when getting into recess 24, domatic 27 on the ejector pad 26 at first contacts with the lower extreme of kicking block 23, later ejector pad 26 removes in recess 24, make kicking block 23 rise upwards under domatic 27's promotion, make the up end of kicking block 23 be higher than the up end of chi platform 9, and then jack-up the main scale, make the main scale break away from chi platform 9, avoid finger cylinder 39 to cause the damage with the upper surface contact of chi platform 9 when pressing from both sides the main scale.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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 content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a cutting rule machine tool for inclined plane grinding, includes material loading platform (1), processing platform (2) and unloading platform (3), material loading platform (1), processing platform (2) and unloading platform (3) set up its characterized in that in order: the grinding wheel machine is characterized by further comprising a feeding device (4), wherein the feeding device (4) is erected above the feeding table (1), the processing table (2) and the discharging table (3), materials can be sequentially conveyed onto the feeding table (1), the processing table (2) and the discharging table (3) by the feeding device (4), a moving device (5) is arranged below the processing table (2), the moving device (5) is used for adjusting the position of the processing table (2), two sides of the processing table (2) are respectively provided with a grinding wheel unit (6), the grinding wheel unit (6) is provided with a grinding head (7), a clamping device (8) is arranged on the processing table (2), the clamping device (8) comprises a ruler table (9), a side positioning pin (10) is arranged at the position of one side edge of the ruler table (9), and a clamping strip (11) is slidably arranged at the other side of the ruler table (9), holding strip (11) and splint (12) fixed connection, splint (12) slidable mounting is on first guide bar (13), the one end of first guide bar (13) is run through chi platform (9), the other end of first guide bar (13) is fixed with connecting plate (14), connecting plate (14) with buffer spring (15) have been met between splint (12), clamping device (8) still include side cylinder (16) and gyration die clamping cylinder (17), the piston rod of side cylinder (16) with connecting plate (14) are connected, gyration die clamping cylinder (17) have chuck (18), chuck (18) are used for compressing tightly the main scale on chi platform (9).

2. A machine tool for grinding a bevel of a caliper according to claim 1, wherein: the front end of chi platform (9) is provided with bayonet socket locating pin (19) and push rod (20), bayonet socket locating pin (19) are fixed the position that is close to the front end of chi platform (9), be fixed with second guide bar (21) on push rod (20), second guide bar (21) slidable mounting be in on chi platform (9), stretch out the upper end of push rod (20) the up end of chi platform (9), the lower extreme and the piston rod of front end cylinder (22) of push rod (20) are connected.

3. A machine tool for grinding a bevel of a caliper according to claim 2, wherein: an ejection mechanism is also arranged at the position of the ruler table (9) close to the middle part, the ejection mechanism comprises an ejection block (23), a groove (24) is arranged on the ruler table (9) corresponding to the top block (23), the top block (23) is slidably arranged in the groove (24), a sliding rod is vertically fixed at the lower end of the top block (23), the slide bar is connected with the ruler table (9) in a sliding way, the ejection mechanism also comprises a push block (26), the upper end of the push block (26) is provided with a slope surface (27), the lower end of the push block (26) is fixedly connected with the first guide rod (13) through a cross rod (28), the push block (26) can be inserted into the groove (24) below the ejector block (23), the push block (26) is also provided with a through groove (29), when the push block (26) is inserted into the groove (24), the sliding rod is clamped with the through groove (29).

4. A machine tool for grinding a bevel of a caliper according to claim 3, wherein: the end part of the holding strip (11) close to the front end of the ruler table (9) is provided with a movable bayonet pin (30).

5. A machine tool for grinding a bevel of a caliper according to claim 4, characterized in that: the lower end of the connecting plate (14) is bent towards the clamping plate (12) to form a bent part (31).

6. A machine tool for grinding a bevel of a caliper according to claim 5, characterized in that: the moving device (5) comprises a longitudinal screw rod sliding table module (32) and a transverse screw rod sliding table module (33), the transverse screw rod sliding table module (33) is installed on the sliding table of the longitudinal screw rod sliding table module (32), and the machining table (2) is installed on the sliding table of the transverse screw rod sliding table module (33).

7. A machine tool for grinding a bevel of a caliper according to claim 6, wherein: material feeding unit (4) are including rodless cylinder (34), link (35), mounting bracket (36), slide rail (37), lift cylinder (38) and finger cylinder (39), slide rail (37) erect through crossbeam (40) the top of processing platform (2), link (35) slidable mounting be in on the slide rail (37), the one end of link (35) with rodless cylinder (34) cylinder body is connected, the other end and mounting bracket (36) fixed connection of link (35), two lift cylinders (38) mirror symmetry set up the both ends of mounting bracket (36), install finger cylinder (39) the tailpiece of the piston rod portion of lift cylinder (38).

8. A machine tool for grinding a bevel of a caliper according to claim 7, wherein: grinding wheel unit (6) still includes stand (41), lift lead screw slip table module (42), lifter plate (43), grinding wheel motor (44) and speed reducer (45), stand (41) sets up the both sides of processing platform (2), install lift lead screw slip table module (42) on stand (41), lifter plate (43) with the slip table fixed connection of lift lead screw slip table module (42), grinding wheel motor (44) with speed reducer (45) are fixed on lifter plate (43), the output shaft of grinding wheel motor (44) pass through pulley group (46) with the input shaft of speed reducer (45), bistrique (7) are fixed on the output shaft of speed reducer (45).

9. A machine tool for grinding a bevel of a caliper according to claim 8, wherein: all be provided with the feed bin on material loading platform (1) and unloading platform (3), the feed bin includes spacing post (47) of many vertical settings, a plurality of spacing holes have been seted up on material loading platform (1) and unloading platform (3), spacing post (47) insert spacing downthehole.