CN217331525U

CN217331525U - Indirect airtight detection device of chuck

Info

Publication number: CN217331525U
Application number: CN202220223458.3U
Authority: CN
Inventors: 叶建平; 向志华; 葛建伟; 杨小雷
Original assignee: Headman Shanghai Automation Technology Co ltd
Current assignee: Headman Shanghai Automation Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-30
Anticipated expiration: 2032-01-26

Abstract

The utility model provides an airtight detection device of indirect type of chuck belongs to the airtight detection technical field of anchor clamps. It has solved the poor problem of current airtight detection device suitability. This airtight detection device of indirect formula of chuck, including locating the locating piece in the chuck, seted up inlet channel in the locating piece, be provided with locating component in the locating piece, locating component is including stretching out locating piece one end and can follow the axially sliding locating pin, and the tip that the locating pin stretches out locating piece one end is circular-arcly, and the locating pin is close to one side of inlet channel and sets up the gas gap that can communicate inlet channel. This airtightness detection device realizes passing the gas breach and being linked together with inlet channel through the endwise slip of locating pin to whether the clamping of indirectness judgement work piece is successful, great promotion this airtightness detection device's suitability.

Description

Indirect airtight detection device of chuck

Technical Field

The utility model belongs to the technical field of the airtight detection of anchor clamps, a airtight detection device is related to, especially, relate to an airtight detection device of indirect type of chuck.

Background

In modern processing, along with the development of manufacturing automation and intellectuality, often can adopt automatic robot to replace mankind to carry out the loading and unloading of part to improve machining efficiency and make the production process more automatic, according to original anchor clamps structure, can't guarantee whether work piece locating surface and anchor clamps locating surface laminate completely, often take place the phenomenon of work piece clamping unevenness, thereby leaded to gathering in follow-up course of working and lead to the part to scrap in batches, caused serious economic loss.

In view of the above circumstances, the prior art has invented patent application No. 201920329301.7 which discloses a finish turning jig with detection function, comprising a connecting disc, a hollow chuck, a connecting plate and a dust cover; one end of the connecting disc is sequentially connected with the hollow chuck, the dust cover and the connecting plate, a plurality of clamping claws are uniformly arranged at one end of the hollow chuck connected with the dust cover, one ends of the clamping claws are positioned in clamping claw mounting grooves formed in the dust cover, and the other ends of the clamping claws are used for clamping parts to be processed; the connecting plate is composed of a plurality of uniformly distributed flat plates extending from a central point in the radial direction, and a positioning block is arranged at the end part of one side of each flat plate, which is far away from the hollow chuck; the dust cover, the flat plate and the positioning block are respectively provided with a dust cover air hole, a flat plate air hole and a positioning block air hole, and air flow flows through the flat plate air hole after flowing in from the dust cover air hole and then flows out from the positioning block air hole.

Although the finish turning clamp with the detection function can detect the clamping of the workpiece, the finish turning clamp has the following defects: the clamp can only detect workpieces with smooth end faces, when the blanks are required to be clamped, gaps exist between the blanks and the positioning blocks after the blanks are clamped due to the fact that the end faces of the blanks are uneven, and at the moment, whether the blanks are successfully clamped or not can not be judged by detecting air tightness.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide an airtight detection device of indirect formula of chuck, solved the poor problem of current airtight detection device suitability.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an airtight detection device of indirect type of chuck, is including locating the locating piece in the chuck, seted up inlet channel in the locating piece, its characterized in that, the locating piece in be provided with locating component, locating component is including stretching out locating piece one end and can follow endwise slip's locating pin, the locating pin tip that stretches out locating piece one end be circular-arcly, and the locating pin is close to one side of inlet channel and sets up the gas breach that crosses that can communicate inlet channel.

In the initial state, the workpiece is not clamped on the chuck, at the moment, one arc-shaped end of the positioning pin extends out of the positioning block, and the air inlet channel is communicated with an air passing notch arranged on one side of the positioning pin, which is close to the air inlet channel, at the moment, the air pressure in the air inlet channel is in a normal state, and by detecting the air pressure in the air inlet channel, the chuck can be judged to be in a non-clamping state, and in the process of clamping the workpiece, because the positioning pin can slide along the axial direction, therefore, after the end face of the workpiece to be clamped is pressed against the positioning pin and gradually extruded inwards, the positioning pin can slide towards the inside of the positioning block along the axial direction until the end face of the workpiece to be clamped is completely pressed against the positioning block, therefore, the air passing notch on the positioning pin is communicated with the air inlet channel in a disconnecting mode, the air pressure in the air inlet channel is increased, and the workpiece can be judged to be successfully clamped after the air pressure in the air inlet channel is detected.

Because this airtight detection device realizes crossing the gas breach and is linked together with inlet channel through the endwise slip of locating pin, thereby whether the clamping of indirectness judgement work piece is successful, great promotion this airtight detection device's suitability, make this airtight detection device not only can detect the part after the processing also can be applicable to the blank, and simultaneously, because the locating pin stretches out the tip of locating piece one end and is circular-arc, so the locating pin is the point contact with the contact of work piece terminal surface, so when meetting the terminal surface behind the blank that is unevenness, the locating pin can laminate with the contact of blank more, further improvement this airtight detection device's suitability.

In the above indirect airtight detection device of chuck, the locating pin one side of keeping away from inlet channel still seted up the spacing groove, locating component still including set up in the locating block and the stopper of spacing groove is gone into to one end card, and the stopper can support and lean on the spacing groove lateral wall.

The limiting block is clamped into the limiting groove through one end of the limiting block, the axial sliding distance of the positioning pin can be limited, in an initial state, after the positioning pin extends out of the positioning block, the limiting block abuts against the side wall of the limiting groove to form axial limiting on the positioning pin, and the air inlet channel can be ensured to be communicated with the air passing notch, after a workpiece is clamped, after the workpiece abuts against the positioning pin to enable the positioning pin to axially slide towards the inside of the positioning block, the abutting between the limiting block and the positioning pin can be cancelled, after the workpiece completely abuts against the positioning block, the positioning block and the positioning pin are still in a non-axial limiting state, until the workpiece is dismounted, the positioning pin axially slides towards the outside of the positioning block until the limiting block axially limits the positioning pin again (namely the limiting block abuts against the side wall of the limiting groove again), and because the limiting groove is opened to one side far away from the air inlet channel, the interference on the air passing notch can not be generated, the air inlet channel is ensured not to be communicated with the limiting groove in the state of clamping the workpiece.

In the above indirect airtight detection device of chuck, the locating piece in seted up the spring chamber, spring chamber intercommunication inlet channel, locating component still including setting up the spring in the spring chamber, and the spring supports and leans on between locating piece and locating pin.

Through set up the spring in the spring intracavity for spring one end supports and leans on the locating piece, and the other end supports and leans on the locating pin, thereby makes the locating pin can realize axial reciprocating motion in the locating piece, and when the clamping work piece, the locating pin can be to the interior axial slip of locating piece, thereby extrudees the spring, and after the work piece was lifted off, the spring released spring force can reset the locating pin, and made the locating pin spacing by the stopper.

In the indirect airtight detection device of the chuck, an air outlet channel is further formed in the positioning block, and the spring cavity can be communicated with the air outlet channel and the air passing gap.

Through still having seted up the air outlet channel in the locating piece, under the initial condition of locating pin, the breach of breathing freely is linked together with inlet channel, because the spring chamber can communicate the passageway of breathing freely with the breach of breathing freely, so inlet channel is linked together with the passageway of breathing freely this moment to make the atmospheric pressure in the inlet channel be in stable state, after the clamping work piece, inlet channel and the breach of breathing freely disconnection intercommunication, then gaseous stifled all the time in inlet channel, atmospheric pressure in the inlet channel then can promote gradually this moment.

In the indirect airtight detection device of the chuck, the air outlet channel is further filled with a sound attenuation material.

The air outlet channel is filled with the silencing material, so that the sound of the air discharged from the air outlet channel can be weakened under the condition that a workpiece is not clamped, and the noise generated when the air tightness detection device is used is reduced.

In the indirect airtight detection device for the chuck, the silencing material is a copper powder sintered filter element.

Because the coolant is often used in the processing of the workpiece, the noise reduction effect is reduced due to the fact that the noise reduction material is soaked, and therefore the noise reduction material in the air tightness detection device is specifically a copper powder sintered filter element which is a material capable of reducing noise and preventing water.

Compared with the prior art, this airtight detection device of indirect formula of chuck has following advantage:

1. the axial sliding of the positioning pin is used for realizing the communication between the air passing notch and the air inlet channel, so that whether the workpiece is successfully clamped or not is indirectly judged, and the applicability of the air tightness detection device is greatly improved.

2. Because the tip that the locating pin stretches out locating piece one end is circular-arc, so the contact of locating pin and work piece terminal surface is the point contact, so when meetting the terminal surface for unevenness's blank after, the locating pin can laminate more with the contact of blank, further improvement this airtight detection device's suitability.

3. Through the amortization material that is copper powder sintering filter core in the intussuseption of giving vent to anger, can effectively reduce this airtight detection device's noise, and can play waterproof effect again.

Drawings

FIG. 1 is a schematic structural view of an indirect type airtightness detection apparatus for a chuck according to the present invention;

FIG. 2 is a front view of a positioning block of the indirect type airtightness detection apparatus according to the present invention;

FIG. 3 is a sectional view of a positioning block of the indirect type airtightness detecting apparatus according to the present invention;

FIG. 4 is a cross-sectional view of the indirect airtightness detection apparatus for a chuck, showing the material injection mechanism in a lifted state;

fig. 5 is a sectional view of the indirect airtightness detection apparatus according to the present invention after a workpiece is clamped.

In the figure, 1, chuck; 1a, a jaw; 2. positioning blocks; 2a, an intake passage; 2b, a spring cavity; 2c, an air outlet channel; 2d, a bump; 3. a positioning assembly; 3a, positioning pins; 3a1, air passing gap; 3a2, a limiting groove; 3b, a spring; 3c, a limiting block; 4. a sound attenuating material; 5. and (5) a workpiece.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 5, an indirect airtight detection device for a chuck 1 comprises a chuck 1, wherein 3 clamping jaws 1a are uniformly arranged on the chuck 1 along a circumferential direction, a positioning block 2 is arranged at a central position of the chuck 1, an air inlet channel 2a is arranged in the positioning block 2, a positioning assembly 3 is arranged in the positioning block 2, specifically, 3 positioning assemblies 3 are arranged, the positioning assembly 3 comprises a positioning pin 3a extending out of one end of the positioning block 2 and capable of sliding along an axial direction, a spring 3b and a limiting block 3c, specifically, a spring cavity 2b is also arranged in the positioning block 2, the spring cavity 2b can be communicated with an air passing gap 3a1 and an air outlet channel 2c, and the spring 3b is arranged in the spring cavity 2b, so that one end of the spring 3b abuts against the positioning block 2, the other end of the spring 3b abuts against one end of the positioning pin 3a not extending out of the positioning block 2, and through the arrangement of the spring 3b, therefore, the positioning pin 3a can axially reciprocate in the positioning block 2, more specifically, 3 groups of lugs 2d are uniformly distributed on the end part of the positioning block 2 along the circumferential direction, each group of lugs 2d is divided into 2 convex parts, and the positioning pin 3a is arranged between the 2 convex parts of each group of lugs 2 d.

As shown in fig. 1 to 5, further, a gas passing notch 3a1 capable of communicating with the gas inlet channel 2a is formed on one side of the positioning pin 3a close to the gas inlet channel 2a, and in an initial state of the positioning pin 3a, the gas passing notch 3a1 is communicated with the gas inlet channel 2a, and the spring cavity 2b can be communicated with the gas passing notch 3a1 and the gas outlet channel 2c, so that in the initial state of the positioning pin 3a, gas entering the gas inlet channel 2a can be discharged from the gas outlet channel 2c, so that the gas pressure in the gas inlet channel 2a is always kept in a normal state.

Further, as shown in fig. 1 to 5, a limiting groove 3a2 is provided on one side of the positioning pin 3a away from the air inlet channel 2a, the limiting block 3c is installed in the positioning block 2, and one end of the limiting block 3c is clamped into the limiting groove 3a2, and the limiting block 3c can abut against the side wall of the limiting groove 3a2, in an initial state, the limiting block 3c can axially limit the positioning pin 3a, so as to prevent the positioning pin 3a from excessively extending out of the positioning block 2, which causes the positioning pin 3a to fall out of the positioning block 2, and because the limiting groove 3a2 is provided on one side away from the air inlet channel 2a, interference on the air passing notch 3a1 is avoided, and it is ensured that the air inlet channel 2a is not communicated with the limiting groove 3a2 in a state of clamping the workpiece 5.

As shown in fig. 1 to 5, in addition, the air outlet channel 2c is filled with a sound-deadening material 4, specifically, the sound-deadening material 4 is a copper powder sintered filter element, and since a coolant is often used in processing the workpiece 5, the sound-deadening material 4 in the air tightness detection device is specifically a copper powder sintered filter element (the copper powder sintered filter element is a material that both silences and prevents water) in order to avoid the reduction of the sound-deadening effect caused by wetting the sound-deadening material 4.

Further, the indirect type airtightness detection device for the chuck 1 further comprises an air pressure detector, wherein the air pressure detector is communicated with the air inlet channel 2a, when the air pressure detector detects that the air pressure in the air inlet channel 2a is larger than a set standard value, the workpiece 5 can be judged to be in a successfully clamped state, and when the air pressure detector detects that the air pressure in the air inlet channel 2a is the standard value, the workpiece 5 is judged to be in an unsuccessfully clamped state.

Further, as shown in fig. 1 to 5, the end of the positioning pin 3a extending out of the positioning block 2 is arc-shaped, when the workpiece 5 is clamped, the end face of the workpiece 5 first contacts with the arc-shaped end of the positioning pin 3a, when the positioning pin 3a is pushed to slide axially towards the inside of the positioning block 2, the positioning pin 3a will be separated from the limit block 3c until the end face of the workpiece 5 abuts against the convex part of the positioning block 2, and then the jaw 1a clamps the outer circumferential surface of the workpiece 5, so that the workpiece 5 is clamped, at this time, the air passing notch 3a1 on one side of the positioning pin 3a will be disconnected from the air inlet channel 2a, so that the side wall of the positioning pin 3a blocks the air inlet channel 2a, the air pressure in the air inlet channel 2a will increase, and after the air pressure in the air inlet channel 2a is detected by the air pressure detector, the detected air pressure will be greater than the set standard value, thereby sending a signal that the workpiece 5 is successfully clamped, after the workpiece 5 is removed, the positioning pin 3a loses the extrusion of the workpiece 5, and the spring 3b releases the elastic force to reset the positioning pin 3 a. Because this airtight detection device realizes passing gas breach 3a1 and inlet channel 2a and be linked together through locating pin 3 a's endwise slip, thereby whether the clamping of indirectness judgement work piece 5 is successful, great promotion this airtight detection device's suitability, make this airtight detection device not only can detect the part after the processing also can be applicable to the blank, simultaneously, because the tip that locating pin 3a stretches out 2 one ends of locating piece is circular-arc, so the contact of locating

3a and 5 terminal surfaces of work piece is the point contact, so when meetting the terminal surface for unevenness's blank after, locating pin 3a can laminate with the contact of blank more, further improvement this airtight detection device's suitability.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an airtight detection device of indirect formula of chuck, is including locating piece (2) in chuck (1), has seted up inlet channel (2a) in locating piece (2), its characterized in that, locating piece (2) in be provided with locating component (3), locating component (3) including stretching out locating piece (2) one end and can follow endwise slip's locating pin (3a), locating pin (3a) the tip that stretches out locating piece (2) one end be circular-arcly, and locating pin (3a) are close to one side of inlet channel (2a) and offer gas passing breach (3a1) that can communicate inlet channel (2 a).

2. The indirect airtightness detection device for the chuck according to claim 1, wherein a limiting groove (3a2) is further formed in one side of the positioning pin (3a) away from the air inlet channel (2a), the positioning assembly (3) further includes a limiting block (3c) which is disposed in the positioning block (2) and radially inserted into the limiting groove (3a2), and the limiting block can abut against a side wall of the limiting groove.

3. The indirect airtight detection device of a chuck according to claim 2, characterized in that the locating block (2) has a spring cavity (2b) formed therein, the spring cavity (2b) communicates with the air inlet passage (2a), the locating assembly (3) further comprises a spring (3b) disposed in the spring cavity (2b), and the spring (3b) abuts against between the locating block (2) and the locating pin (3 a).

4. The indirect airtight detection device of a chuck according to claim 3, wherein the locating block (2) is further provided with an air outlet channel (2c), and the spring cavity (2b) can communicate the air outlet channel (2c) and the air passing gap (3a 1).

5. The indirect airtightness detection apparatus for a chuck according to claim 4, wherein the air outlet passage (2c) is further filled with a sound-deadening material (4).

6. The indirect tightness detection device of a chuck according to claim 5, characterized in that the sound-deadening material (4) is a copper powder sintered filter element.