CN209355852U - A kind of circular arc flatness detection instrument of cam - Google Patents

Abstract

The utility model provides a kind of circular arc flatness detection instrument of cam, it include: vertical plate, bottom plate, measuring rod, rotating block, drive rod and gear assembly, the vertical plate is arranged on the bottom plate, the rotating block is arranged on the bottom plate, the measuring rod is threaded through on the vertical plate, and the end of the measuring rod is towards the rotating block, the drive rod is connected by the gear assembly and the rotating block, cam is arranged on the rotating block, and the end of the measuring rod is located between the upper and lower disk body of cam；The utility model has the following beneficial effects: being able to detect the circular arc flatness of cam, and the equipment is convenient for operation, and relatively labor-saving.

Description

A kind of circular arc flatness detection instrument of cam

Technical field

The utility model belongs to sewing device components detection device technology field, is related to a kind of circular arc flatness of cam Detecting instrument.

Background technique

There are a kind of components for being referred to as cam on industrial sewing machine, with upper plate and lower plate, in upper plate And there is an annular trough body structure between lower plate, the equalization of the trough body structure of the annular, but a part is wider, Another part is relatively narrow, wherein relatively narrow part is similar to sector, and wider portion is if there is problem, such as wider part The part point occupied is relatively more or fewer, can the circular arc flatness to cam have an impact.

So needing a kind of equipment of circular arc flatness for being able to detect cam at present, and the equipment also needs convenient for behaviour Make, and relatively labor-saving detecting instrument.

Utility model content

The purpose of this utility model be propose in view of the above-mentioned problems existing in the prior art a kind of cam circular arc it is smooth Spend detecting instrument.

The purpose of this utility model can be realized by the following technical scheme: a kind of circular arc flatness detector of cam Device, comprising: vertical plate, bottom plate, measuring rod, rotating block, drive rod and gear assembly, the vertical plate are arranged on the bottom plate, The rotating block is arranged on the bottom plate, and the measuring rod is threaded through on the vertical plate, and the end court of the measuring rod To the rotating block, the drive rod is connected by the gear assembly and the rotating block, and cam is arranged at described turn On motion block, the end of the measuring rod is located between the upper and lower disk body of cam.

Preferably, be provided with fixed block on the bottom plate, it is provided with the mounting groove of circular hole on the fixed block, described turn Motion block is arranged in the mounting groove, and accessory plate is provided on the bottom plate, limit hole, the limit are provided on the accessory plate Position hole is set on the rotating block, so that the rotating block is limited in the mounting groove.

Preferably, the gear assembly includes first gear, second gear and third gear, the first gear setting On the drive rod, the third gear is arranged on the rotating block, the second gear and the first gear and The third gear engagement, so that the torque of the drive rod is transferred on the rotating block.

Preferably, the first gear and the second gear are respectively positioned between the accessory plate and the bottom plate.

Preferably, the drive rod passes through the accessory plate and the lower end of the drive rod is threaded through the fixed block It is interior.

Preferably, being provided with nut at the top of the drive rod, torque is provided between the nut and the drive rod Limiter.

Preferably, the torque force limiting device is frictional torsion limiting structure, first is offered at the top of the drive rod Friction portion is provided with the second friction portion in the nut, and first friction portion and second friction portion, which contradict, to be connected, and works as institute When stating the torque overload of drive rod, first friction portion and second friction portion skid.

Compared with prior art, the utility model has the following beneficial effects:

1, it is able to detect the circular arc flatness of cam, and the equipment is convenient for operation, and relatively labor-saving.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the circular arc flatness detection instrument of the cam of the utility model.

Fig. 2 is the structural schematic diagram of the gear assembly of the utility model.

Fig. 3 is the nut of the utility model and the structural schematic diagram of drive rod.

In figure, 100, vertical plate；200, bottom plate；210, fixed block；220, accessory plate；300, measuring rod；400, rotating block； 500, drive rod；510, nut；520, the first friction portion；530, the second friction portion；610, first gear；620, second gear； 630, third gear；700, cam；710, upper plate；720, lower plate.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figure 1, Figure 2, Figure 3 shows, the circular arc flatness detection instrument of a kind of cam, comprising: vertical plate 100, bottom plate 200, Measuring rod 300, rotating block 400, drive rod 500 and gear assembly, the vertical plate 100 is arranged on the bottom plate 200, described Rotating block 400 is arranged on the bottom plate 200, and the measuring rod 300 is threaded through on the vertical plate 100, and the measuring rod 300 end is connected towards the rotating block 400, the drive rod 500 by the gear assembly and the rotating block 400 linkage It connects, cam 700 is arranged on the rotating block 400, and the end of the measuring rod 300 is located at the upper and lower disk body 720 of cam 700 Between.

Preferably, the structure of cam 700 is more special, has a upper plate 710 and a lower plate 720, and And there is one piece of fan-shaped concave configuration on upper plate 710, so that the spacing between upper plate 710 and lower plate 720 forms one The area Ge compare Kuan and the relatively narrow area below concave configuration, the circular arc degree of 700 circumferential surface of cam shared by wider area, actually may be used To regard the circular arc flatness of cam 700 as, measurement when, be first when measuring rod 300 is penetrated into upper and lower disk body 720 it Between, make it on the circumferential surface of cam 700, rotating block 400 rotates at this time, when measuring rod 300 contradicts the rotating block at relatively narrow area 400 can not rotate, and the arc length rotated at this time needs in setting value, that is to say, that if the radian that rotating block 400 rotates It is too long or too short, then the circular arc flatness of the cam 700 is unqualified.

And in existing detector, it is mainly personnel by turning 400 top of rotating block there are above-mentioned detection structure Axis body, thus with 700 relative measurement bar 300 of moving cam rotation, into but in this way operation, relatively arduously, Er Qiezhuan 400 top of motion block for cam 700 due to that will wear, so being easy to skid, and be also inconvenient to operate, institute when turning To be specially provided with drive rod 500 and gear assembly, drive rod 500 can be set on the side of rotating block 400, then pass through Gear assembly is connected, and such user is not only convenient for operating, and drives rotating block 400 to rotate by gear assembly, more The laborsaving convenience added, also, due to without pinching 400 top of rotating block, it is possible to it is changed to manipulator to clamp cam 700, So that the degree of automation is higher.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, fixed block is provided on the bottom plate 200 210, the mounting groove of circular hole is provided on the fixed block 210, the rotating block 400 is arranged in the mounting groove, described It is provided with accessory plate 220 on bottom plate 200, limit hole is provided on the accessory plate 220, the limit hole is set in the rotation On block 400, so that the rotating block 400 is limited in the mounting groove.

Preferably, with the fixed block 210 of circular ring shape on bottom plate 200, mounting groove is exactly the ring heart of fixed block 210, and There are two graduation marks on fixed block 210, be provided with pointer on rotating block 400, rotating block 400 can be relative to fixed block 210 Rotation, when pointer is pointed on graduation mark, rotating block 400 can not be rotated, and just illustrate that the cam 700 is qualified at this time.

Preferably, there is accessory plate 220 on bottom plate 200, the limit hole on accessory plate 220 is set on rotating block 400, and one Aspect can limit rotating block 400 and extract out of mounting groove, on the other hand can be used for installation drive rod 500.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, the gear assembly include first gear 610, Second gear 620 and third gear 630, the first gear 610 are arranged on the drive rod 500, the third gear 630 are arranged on the rotating block 400, the second gear 620 and the first gear 610 and the third gear 630 Engagement, so that the torque of the drive rod 500 is transferred on the rotating block 400.

Preferably, gear assembly includes three gears, and first gear 610 is set on drive rod 500, plays driving gear Effect, third gear 630 be arranged on rotating block 400, directly teeth portion can be opened up on rotating block 400, to be formed Third gear 630, second gear 620 are engaged with first gear 610 and third gear 630, when first gear 610 rotates, It is able to drive the rotation of second gear 620, it is final that third gear 630 is driven to rotate, it is final that rotating block 400 is driven to rotate, it is such Structure cleverly can change transmission ratio using gear, so that more Portable power saving when personnel operate.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, the first gear 610 and described second Gear 620 is respectively positioned between the accessory plate 220 and the bottom plate 200.

Preferably, first gear 610 and second gear 620 are respectively positioned between bottom plate 200 and accessory plate 220, so not only First gear 610 and second gear 620 can be sheltered from, personnel is avoided to touch, additionally it is possible to prevent two gears from being damaged by external force It is bad.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, the drive rod 500 passes through the accessory plate 220 and the lower end of the drive rod 500 be threaded through in the fixed block 210.

Preferably, drive rod 500 realizes installation positioning by accessory plate 220, enables 500 smooth rotation of drive rod.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, the top of the drive rod 500 is provided with spiral shell Cap 510 is provided with torque limiter between the nut 510 and the drive rod 500.

Preferably, rotating block 400 needs timely to stop in overload, cam 700 otherwise can be damaged, so that cam 700 Circular arc flatness be affected, and in traditional structure, due to directly rotating block 400 being driven to be rotated, so Torque limiter can not be set, and in the present embodiment, due to being driven using drive rod 500 and gear assembly , so torque limiter can very easily be arranged.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of the above embodiment, the torque force limiting device is frictional torsion limit Structure processed, the top of the drive rod 500 offer the first friction portion 520, the second friction portion are provided in the nut 510 530, first friction portion 520 and second friction portion 530 contradict and connect, when the torque overload of the drive rod 500, First friction portion 520 and second friction portion 530 skid.

Preferably, this structure that torque transmitting is carried out by the first friction portion 520 and the second friction portion 530, Neng Gouqi To the effect of torque force limiting device, furthermore, it is understood that when measuring rod 300 is blocked by the relatively narrow place of cam 700, once continue to use Power will damage cam 700, and here by nut 510 is turned, drive rod 500 is driven by nut 510, once driving Bar 500 can not rotate, and nut 510 will skid, to play the purpose of protection cam 700.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (7)

1. a kind of circular arc flatness detection instrument of cam characterized by comprising vertical plate, bottom plate, measuring rod, rotating block, drive Lever and gear assembly, the vertical plate are arranged on the bottom plate, and the rotating block is arranged on the bottom plate, the measurement Bar is threaded through on the vertical plate, and the end of the measuring rod, towards the rotating block, the drive rod passes through the gear Component is connected with the rotating block, cam be arranged on the rotating block, the end of the measuring rod be located at cam it is upper, Between lower plate.

2. the circular arc flatness detection instrument of cam as described in claim 1, it is characterised in that: be provided on the bottom plate Fixed block is provided with the mounting groove of circular hole on the fixed block, and the rotating block is arranged in the mounting groove, the bottom plate On be provided with accessory plate, limit hole is provided on the accessory plate, the limit hole is set on the rotating block, thus by institute Rotating block is stated to be limited in the mounting groove.

3. the circular arc flatness detection instrument of cam as described in claim 2, it is characterised in that: the gear assembly includes First gear, second gear and third gear, the first gear are arranged on the drive rod, the third gear setting On the rotating block, the second gear is engaged with the first gear and the third gear, thus by the driving The torque of bar is transferred on the rotating block.

4. the circular arc flatness detection instrument of cam as described in claim 3, it is characterised in that: the first gear and The second gear is respectively positioned between the accessory plate and the bottom plate.

5. the circular arc flatness detection instrument of cam as described in claim 4, it is characterised in that: the drive rod passes through institute The lower end for stating accessory plate and the drive rod is threaded through in the fixed block.

6. the circular arc flatness detection instrument of cam as described in claim 5, it is characterised in that: the top of the drive rod It is provided with nut, is provided with torque limiter between the nut and the drive rod.

7. the circular arc flatness detection instrument of cam as described in claim 6, it is characterised in that: the torque limiter is Frictional torque limit structure offers the first friction portion at the top of the drive rod, is provided with the second friction in the nut Portion, first friction portion and second friction portion, which contradict, to be connected, and when the torque overload of the drive rod, described first rubs Wiping portion and second friction portion skid.