CN201241893Y - Thin type cylinder for fixture - Google Patents

Abstract

The utility model relates to a thin-type cylinder for a cramping apparatus, which comprises a cylinder body (1) and a piston rod (2) mounted in the cylinder body (1), wherein the piston rod (2) and the inner wall of the cylinder body (1) are sealed and matched by liquid, a bar portion (21) of the piston rod (2) extends out of the cylinder body (1), and the internal space of the cylinder body (1) is divided into an upper and a lower sealing cavities (11, 12) by a piston portion (22) of the piston rod (2), and a first channel (13) which is communicated with the upper sealing cavity (11) and a second channel (14) which is communicated with the lower sealing cavity (12) are arranged on the cylinder body (1), wherein the first channel (13) is axially arranged along the lateral wall of the cylinder body (1), and the first channel (13) axially penetrates through the end surface of the cylinder body (1) and is communicated with outside, and the second channel (14) similarly penetrates through the lateral wall along the cylinder body (1) and is axially arranged, and the second channel (14) axially penetrates through the end surface of the cylinder body (1) and is communicated with outside.

Description

A kind of anchor clamps thin type cylinder

Technical field

The utility model relates to a kind of anchor clamps cylinder, relates in particular to a kind of anchor clamps thin type cylinder.

Background technique

Flourish along with the machining center industry driven the rise of domestic professional clamp tool industry, and the fast development of industries such as domestic automobile, Aero-Space requires the complexity and the precision of Component in batches also more and more higher.The domestic anchor clamps industry of the difficulty of industry part processing and rate request must be fast-developing.

There is following drawback in existing anchor clamps with cylinder:

1, existing craspedodrome cylinder all is the sidepiece oil-feeds at cylinder body, and cylinder body generally is to be threaded to be fixed on the substrate, therefore the craspedodrome cylinder of using as anchor clamps can form too many inlet, outlet or oil pipe on substrate top, the iron filings that produce in the operative workpiece process can accumulate between the various pipelines, iron filings are easy to clean not, if there is chip not clean out, can causes repetition clamping precision to lose and cause scrapping of product.Also have, the iron filings of high temperature can scald the relieving stagnant Qi pipe.

2, require anchor clamps also can carry out the control of effective stroke in the now increasing Cutter Body Processing with Machining Center, guaranteeing machining accuracy, but existing anchor clamps are with all there not being stroke control function in the cylinder.

3, existing anchor clamps are determined with the range of cylinder piston rod, unavoidably can occur sometimes anchor clamps with cylinder when range, the pressing plate that links to each other with piston rod can't clamping work pieces, can only change clamping at this moment and just can address this problem with cylinder.

In sum, existing anchor clamps also can be further improved with cylinder.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of under installment state at above-mentioned prior art present situation, can guarantee to install the anchor clamps thin type cylinder that does not have too many inlet, outlet or oil pipe on the substrate of this thin type cylinder.

Second technical problem to be solved in the utility model provides a kind of solution thin type cylinder that can control the effective travel of piston rod.

The 3rd technical problem to be solved in the utility model provides a kind of solution thin type cylinder that can finely tune the range of piston rod.

The utility model solves the technological scheme that above-mentioned first technical problem adopted: a kind of anchor clamps thin type cylinder, include cylinder body, be installed in the piston rod in the cylinder body, piston rod cooperates with the inboard wall of cylinder block liquid sealing, cylinder body stretches out in the bar portion of piston rod, on the piston portion of piston rod becomes the cylinder interior separated by spaces, following two Seal cages, have the first passage that communicates with last Seal cage on the cylinder body, and the second channel that communicates with the lower seal chamber, it is characterized in that: described first passage axially is provided with along cylinder side wall, first passage axially runs through the end face of cylinder body and communicates with the external world, described second channel axially is provided with along cylinder side wall equally, and second channel axially runs through the end face of cylinder body and communicates with the external world.

For solving second technical problem, the piston portion outer circumferential face of above-mentioned piston rod has first circular groove, be embedded with magnet ring in this first circular groove, have the caulking groove that is provided with vertically on the sidewall of cylinder body, be embedded with the sense cell that to respond to described magnet ring in this caulking groove.Like this, by regulating the relative position relation of magnet ring and sense cell, when piston moves back and forth when determining the position, as unclamp under workpiece or the clamping work pieces state, converting the actuating signal of piston to electrical signal passes by the lead that links to each other with sense cell, by signal receiving device, whether control cylinder moves, the final control that realizes the effective travel of piston rod.

For solving the 3rd technical problem, can on piston rod stretches out the bar portion outer circumferential face of cylinder body, be shaped on outside thread, or stretch out at piston rod on the bar portion exterior edge face of cylinder body and be provided with tapped hole.Can install bolt etc. so in use in the outer end of piston rod additional and do the short distance adjustment.

Above-mentioned cylinder side wall is provided with four mounting holes that axially run through.Because mounting hole is set directly on the sidewall of cylinder body, need not to form the joint that has mounting hole of evagination at cylinder side wall, saved the volume of cylinder.

For guaranteeing the liquid sealing effect between piston rod and the cylinder body; be provided with the sealing of first seal ring between the piston portion of above-mentioned piston rod and the inboard wall of cylinder block; first seal ring is installed on second circular groove of piston portion outer circumferential face; also be provided with the sealing of second seal ring between the bar portion of piston rod and the inboard wall of cylinder block, second seal ring is installed on the inner peripheral surface circular groove of cylinder body axial hole.

Compared with prior art, advantage of the present utility model is: described first passage and second channel all axially are provided with along cylinder side wall, during assembling this this thin type cylinder upper end or lower end are fixed on the substrate, and have first access way that communicates with first passage in substrate inside, and second access way that communicates with second channel, during work, medium is to be cylinder interior circulation at substrate always, need not at the unnecessary pipeline that communicates with first passage and second channel of substrate top layout, the iron filings of avoiding producing in the operative workpiece process can accumulate in and expose between the various pipelines in substrate top, guarantee to repeat the clamping precision, reduce the scrappage of product.Also avoid the iron filings of high temperature can scald the possibility of relieving stagnant Qi pipe simultaneously.

Description of drawings

Fig. 1 is first embodiment's of the utility model a structure sectional view;

Fig. 2 is first embodiment's of the utility model a worm's eye view;

Fig. 3 is second embodiment's of the utility model a front view;

Fig. 4 adopts front oil duct plate scheme of installation for first embodiment of the utility model;

Fig. 5 adopts rear oil duct plate scheme of installation for first embodiment of the utility model.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1,2,4,5, be first embodiment of the present utility model.

A kind of anchor clamps thin type cylinder, include cylinder body 1, cylinder body 1 rear end is by an end cap 7 sealings, in cylinder body 1, to form the inner space, end cap 7 is fixed by Cock screw 8 and cylinder body, cylinder body 1 sidewall is provided with four mounting holes that axially run through 16, and it is fixing with installation base plate 9 to pass mounting hole 16 with bolt during installation.

One is installed in the piston rod 2 in the cylinder body 1, piston rod 2 cooperates with cylinder body 1 inwall liquid sealing, be to be provided with 5 sealings of first seal ring between the piston portion 22 of piston rod 2 and cylinder body 1 inwall, first seal ring 5 is installed on second circular groove 222 of piston portion 22 outer circumferential faces, also be provided with 6 sealings of second seal ring between the bar portion 21 of piston rod 2 and cylinder body 1 inwall, second seal ring 6 is installed on the inner peripheral surface circular groove 17 of cylinder body 1 axial hole.

Cylinder body 1 stretches out in the bar portion 21 of piston rod 2, the piston portion 22 of piston rod 2 is separated into upper and lower two Seal cages 11,12 with cylinder body 1 inner space, have the first passage 13 that communicates with last Seal cage 11 on the cylinder body 1, and the second channel 14 that communicates with lower seal chamber 12, described first passage 13 along cylinder body 1 side-wall shaft to setting, first passage 13 axially runs through the upper-end surface of cylinder body 1 and communicates with the external world, described second channel 14 equally along cylinder body 1 side-wall shaft to setting, second channel 14 axially runs through the upper-end surface of cylinder body 1 and communicates with the external world.Communicate with the external world because first passage 13 and second channel 14 run through the upper-end surface of cylinder body 1, promptly the external part of piston rod 2 and first passage 13 and second channel 14 into and out of oilhole in the same side, so board-like installation of this cylinder body suitable employing front oil duct.If running through the lower end surface of cylinder body 1, first passage 13 and second channel 14 communicate with the external world, be the external part of piston rod 2 and first passage 13 and second channel 14 into and out of oilhole at opposition side, this cylinder body 1 suitable rear oil duct plate mode is installed so, and it can be set as required.

Piston portion 22 outer circumferential faces of described piston rod 2 have first circular groove 221, be embedded with magnet ring 3 in it, has the caulking groove 15 that is provided with vertically on the sidewall of cylinder body 1, be embedded with the sense cell 4 that to respond to described magnet ring 3 in this caulking groove 15, sense cell 4 generally also links to each other with a tutorial light 10, this tutorial light 10 also is embedded in the caulking groove 15 of cylinder body 1 sidewall, and exposes.

Described piston rod 2 stretches out on bar portion 21 outer circumferential faces of cylinder body 1 and has been shaped on outside thread 211.

As shown in Figure 3, be second embodiment of the present utility model, itself and first embodiment's difference is that bar portion 21 exterior edge faces that described piston rod 2 stretches out cylinder body 1 are provided with tapped hole 212.Like this can be in use on the outside thread 211 of piston rod 2 or tapped hole 212, install a bolt additional to do the short distance adjustment.

These two embodiments' working principle and process are identical, specific as follows:

During assembling this lever cylinder upper end is fixed on the substrate 9, it is installed for the front oil duct plate and loosens, as shown in Figure 3, and have first access way 91 that communicates with first passage 13 in substrate 9 inside, and second access way 92 that communicates with second channel 14, and be provided with the seal ring sealing at the intersection of the first passage 13 and first access way 91, intersection at the second channel 14 and second access way 92 also is provided with the seal ring sealing, during work, medium is at substrate 9 and cylinder body 1 internal circulation always, need not at the unnecessary pipeline that communicates with first passage 13 and second channel 14 of substrate 9 tops layout, the iron filings of avoiding producing in the operative workpiece process can accumulate in and expose between the various pipelines in substrate top, guarantee to repeat the clamping precision, reduce the scrappage of product.Also avoid the iron filings of high temperature can scald the possibility of relieving stagnant Qi pipe simultaneously.

Concrete working procedure has two, at first is clamping process, can be referring to Fig. 4, and medium enters in the lower seal chamber 12 through second channel 14, promotes piston rod 2 and upwards slides, and the bar portion 21 of piston 2 is up, until bar portion 21 clamping work pieces of piston rod 2;

Release process, medium enter in the Seal cage 11 through first passage 13, and the bar portion 21 of promotion piston rod 2 is to lower slider, and the bar portion 21 of piston 2 is descending, loosen workpiece until the bar portion 21 of piston rod 2;

Simultaneously, the magnet ring 3 on the piston portion 22 passes through sense cell 4 with the actuating signal of piston rod 2, converts electrical signal to and passes by lead 18, and tutorial light 10 lights the prompting action and finishes.

Claims (6)

1, a kind of anchor clamps thin type cylinder, include cylinder body (1), be installed in the piston rod (2) in the cylinder body (1), piston rod (2) cooperates with cylinder body (1) inwall liquid sealing, cylinder body (1) stretches out in the bar portion (21) of piston rod (2), the piston portion (22) of piston rod (2) is separated into cylinder body (1) inner space, following two Seal cages (11,12), have the first passage (13) that communicates with last Seal cage (11) on the cylinder body (1), and the second channel (14) that communicates with lower seal chamber (12), it is characterized in that: described first passage (13) along cylinder body (1) side-wall shaft to setting, first passage (13) axially runs through the end face of cylinder body (1) and communicates with the external world, described second channel (14) equally along cylinder body (1) side-wall shaft to setting, second channel (14) axially runs through the end face of cylinder body (1) and communicates with the external world.

2, anchor clamps thin type cylinder according to claim 1, it is characterized in that: piston portion (22) outer circumferential face of described piston rod (2) has first circular groove (221), be embedded with magnet ring (3) in this first circular groove (221), have the caulking groove (15) that is provided with vertically on the sidewall of cylinder body (1), be embedded with the sense cell (4) that to respond to described magnet ring (3) in this caulking groove (15).

3, anchor clamps thin type cylinder according to claim 1 is characterized in that: described piston rod (2) stretches out on bar portion (21) outer circumferential face of cylinder body and has been shaped on outside thread (211).

4, anchor clamps thin type cylinder according to claim 1 is characterized in that: bar portion (21) exterior edge face that described piston rod (2) stretches out cylinder body is provided with tapped hole (212).

5, according to the described anchor clamps thin type cylinder of arbitrary claims in the claim 1～4, it is characterized in that: described cylinder body (1) sidewall is provided with four mounting holes that axially run through (16).

6, anchor clamps thin type cylinder according to claim 3, it is characterized in that: be provided with first seal ring (5) sealing between the piston portion (22) of described piston rod (2) and cylinder body (1) inwall, first seal ring (5) is installed on second circular groove (222) of piston portion (22) outer circumferential face, also be provided with second seal ring (6) sealing between the bar portion (21) of piston rod (2) and cylinder body (1) inwall, second seal ring (6) is installed on the inner peripheral surface circular groove of cylinder body (1) axial hole (17).

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