WO2020125243A1

WO2020125243A1 - Auxiliary blowing device, workpiece positioning and processing component and processing center

Info

Publication number: WO2020125243A1
Application number: PCT/CN2019/115622
Authority: WO
Inventors: 吴勇勇; 罗良维; 胡海明
Original assignee: 苏州谷夫道自动化科技有限公司
Priority date: 2018-12-18
Filing date: 2019-11-05
Publication date: 2020-06-25
Also published as: CN209205946U

Abstract

An auxiliary blowing device (1), a workpiece positioning and processing component and a processing center. The auxiliary blowing device (1) comprises a cylinder assembly, a telescopic assembly, and an elastic telescopic mechanism. The cylinder assembly comprises a cylinder (11), a limiting portion (12), an air intake portion (13), and a communicating portion (14). The limiting portion (12) and the air intake portion (13) are provided on the cylinder (11); the communicating portion (14) is provided between the limiting portion (12) and the air intake portion (13) in the axial direction of the cylinder (11); the limiting portion (12) is provided with a limiting through hole (1211); the air intake portion (13) is provided with an air inlet (1313); the communicating portion (14) is provided with a communicating space; one end of the telescopic assembly is provided in the cavity of the cylinder, and the other end extends through the limiting through hole (1211) to the outside of the cylinder (11); the telescopic assembly is provided with a blowing air passage which is communicated with the outside of the cylinder (11); and the elastic telescopic mechanism is provided between the end of the telescopic assembly located in the cylinder (11) and the limiting portion (12). A workpiece positioning and processing assembly has the auxiliary blowing device. A processing center has the auxiliary blowing device or the workpiece positioning and processing assembly. The auxiliary blowing device can implement fixed-point blowing without interfering with a machine tool, can achieve a good cleaning effect on marked points on a workpiece, has a simple structure, is convenient to install and debug, and has a low cost.

Description

Auxiliary blowing device, workpiece positioning and processing component and processing center

Citation of related applications

The present invention requires the priority of a utility model patent application filed in China on December 18, 2018, titled "Auxiliary Blowing Device, Workpiece Positioning Processing Components and Processing Center", and the application number is 201822128063.1. The entire content of this application is approved by Citations are incorporated into this article.

Technical field

The invention relates to the technical field of numerical control processing, in particular to an auxiliary blowing device, a workpiece positioning processing assembly and a processing center with the auxiliary blowing device.

Background technique

The glass plate-like structure products in the field of intelligent imaging technology have a large size span, a specific structure, and high dimensional accuracy requirements. The surface of materials such as blue glass usually has "L-shaped" silk screen or other marking points. When CNC processing a large number of plate-shaped glass parts, a CCD (Charge Coupled Device) device near the main shaft is generally used for the surface of the material Mark points. After the CNC (Computer Numerical Control) system obtains the glass mark position parameters, the CNC milling machine processes the glass to obtain qualified glass products that meet the design requirements.

Patent document CN201310390745.9 discloses a double-CCD positioning engraving machine, which includes a first three-dimensional positioning device and a second three-dimensional positioning device that are independent of each other and respectively connected to a control device, and can process two pieces of printed positioning points at the same time. Position the glass and adjust the processing position of the glass. It greatly reduces the space occupation of the site and saves energy consumption, and reduces the manual management cost and use cost of the equipment during mass production.

However, the commonly used CCD device is suitable for positioning the surface of the part before the first processing. When reprocessing the semi-finished products or relocating the marked points of the processed parts during the processing, due to the large amount of cooling water and The dust and water vapor formed by the glass swarf are attached to the surface of the glass cover and the marking points, which interferes with the lens shooting of the CCD vision positioning system, resulting in unclear imaging and positioning failure.

The CNC machine tool usually blows the air and then performs the CCD positioning before processing the plate-shaped processed parts. However, there are the following problems: First, manually wipe the contaminants on the surface of the processed parts, the operator's action timing is inconsistent, which will result in greater positioning accuracy errors and timing errors, and the powder, water stains or water generated during the processing Air and other interference, it is very inconvenient to perform secondary positioning on the surface of the parts in the processing process, which affects the accuracy and efficiency of machine tool processing.

Secondly, in the scheme of using a solenoid valve to control the fixed blowing tube at the lower end of the spindle to perform automatic fixed-point blowing cleaning on the surface of the glass mark point, because the blowing tube is too close to the marking point, it is easy to cause the blowing tube to interfere with the machine tool; and the blowing tube is away from the marking point Too far, or the fixed-point blowing method of the circumferential opening of the air nozzle, not only will the blow-off cleaning effect be poor due to insufficient atmospheric pressure, but also the CCD detection device needs to wait for a long time to focus, which seriously affects the normal operation of the machine tool and reduces the glass processing efficiency .

Finally, the fixed-point blowing method with the curved end of the blowing pipe is adopted, and the blowing pipe nozzle is close to the mark point of the processed part. The blowing pipe is prone to uneven movement under the action of atmospheric pressure, and the gas blows will cause the processing area to be blown. Dust or water splashes everywhere, causing re-contamination of the marked points. At the same time, due to the large focal length of the CCD device, the length of the gas nozzle is too long, there is no quick reset device, and it cannot be reset in time, which not only affects the processing range and efficiency, but also easily causes interference or collision.

Summary of the invention

Based on the above-mentioned defects in the prior art, an object of the present invention is to provide an auxiliary blowing device that does not interfere with a machine tool and has a good cleaning effect, a workpiece positioning processing assembly and a processing center having the auxiliary blowing device.

To this end, the present invention provides the following technical solutions.

The present invention provides an auxiliary blowing device, the auxiliary blowing device includes a cylinder assembly, a stretching assembly and an elastic expansion mechanism,

The cylinder barrel assembly includes a cylinder barrel, a limiting portion, an air intake portion, and a conducting portion, and the limiting portion and the air intake portion are spaced along the axial direction of the cylinder barrel and placed in the cylinder barrel. The conducting portion is provided between the limiting portion and the air intake portion in the axial direction of the cylinder,

The limiting portion is provided with a limiting through hole extending along the axial direction, the air inlet is provided with an air inlet, and the conductive portion forms a conductive space,

One end of the telescopic assembly is disposed in the cavity of the cylinder barrel between the limiting portion and the air intake portion, and the other end extends through the limiting through hole to the cylinder barrel external,

The telescopic assembly is provided with an air blowing channel, and the air blowing channel communicates with the outside of the cylinder,

The elastic telescopic mechanism is disposed between an end of the telescopic assembly located in the cylinder and the limiting portion,

When gas is input into the cylinder through the air inlet, the telescopic assembly can compress the elastic telescopic mechanism along the axial direction to move under the pressure of the gas and move from the cylinder The cylinder extends a predetermined length so that the air inlet communicates with the blowing air channel through the conducting space,

When the input of the gas is stopped, the telescopic assembly can partially retract the cylinder tube under the action of the elastic telescopic mechanism to reset, so that the air inlet is not in communication with the blowing air passage.

In at least one embodiment, the limiting portion is provided with a limiting convex portion or a limiting concave portion, the cylinder barrel is provided with a limiting concave portion or a limiting convex portion, and the limiting convex portion cooperates with the limiting concave portion such that The limit portion cannot rotate relative to the cylinder.

In at least one embodiment, the conducting portion includes a conducting air port and a sealing assembly, the conducting air port penetrates the side wall of the cylinder barrel in a radial direction of the cylinder barrel, and the sealing assembly seals the guide The air vent forms the conducting space.

In at least one embodiment, the sealing assembly includes a conducting tube and a sealing member, the conducting tube is sleeved outside the cylinder, and the sealing member is disposed between the conducting tube and the cylinder At this time, the conducting tube seals the conducting air port to form the conducting space.

In at least one embodiment, the telescopic assembly includes a piston part, a telescopic rod and an air blowing tube,

The piston portion is provided in a cavity of the cylinder located between the limit portion and the air intake portion,

One end of the telescopic rod is connected to the piston part, and the other end extends through the limit through hole to the outside of the cylinder and is connected to the air blowing pipe,

The blowing air channel includes a first air channel opened in the piston part, a second air channel opened in the telescopic rod, and a third air channel opened in the blowing tube, the first air channel, The second air passage communicates with the third air passage in sequence.

In at least one embodiment, the telescopic rod is provided with a first anti-rotation limiting portion, and a wall surface of the limiting portion defining the limiting through hole is provided with a second anti-rotation limiting portion, and the first anti-rotation The limiting portion cooperates with the second anti-rotation limiting portion, so that the telescopic rod cannot rotate relative to the limiting portion.

In at least one embodiment, when the air inlet communicates with the blowing air passage through the conduction space, an end of the piston portion close to the limiting portion abuts the limiting portion.

In at least one embodiment, the elastic expansion mechanism is a spring, and/or the air blowing pipe is made of a metal material.

The invention also provides a workpiece positioning and processing assembly, the workpiece positioning and processing assembly includes a position detection device, a processing spindle and the auxiliary blowing device according to any of the above embodiments, the processing spindle is used to process the workpiece, The position detection device is provided on one side of the processing spindle for detecting and positioning the workpiece, and the auxiliary blowing device is provided on a side of the position detection device opposite to the processing spindle for Blow air to clean the marked points of the workpiece.

The invention also provides a machining center, which includes the auxiliary blowing device according to any one of the above embodiments or the above-mentioned workpiece positioning and processing assembly.

By adopting the above technical solution, the present invention provides an auxiliary blowing device, which cooperates between the cylinder assembly, the telescopic assembly and the elastic telescopic mechanism, the telescopic assembly can telescopically reciprocate along a straight line, and does not interact with the machine tool Interference and collision occur at the same time to achieve fixed-point blowing action, the cleaning effect of the marked point on the workpiece is good, and its structure is simple, easy installation and debugging, and low cost. Similarly, the workpiece positioning processing assembly with the auxiliary air blowing device and the processing center have the same beneficial effects.

BRIEF DESCRIPTION

FIG. 1 shows a schematic structural diagram of a positioning and processing assembly according to the present invention.

FIG. 2 shows a schematic structural view of the auxiliary blowing device and the mounting base in FIG. 1.

FIG. 3 shows an exploded view of the structure of the auxiliary blowing device in FIG. 1.

FIG. 4 shows a schematic structural diagram of the auxiliary blowing device in FIG. 1 when there is no ventilation.

FIG. 5 shows a schematic structural diagram of the auxiliary blowing device in FIG. 1 when ventilating.

6 to 9 show working principles of the positioning and processing assembly according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

1 Auxiliary blowing device;

11 cylinder barrel; 111 first conduction air port; 112 second conduction air port; 113 first sealing groove; 114 first snap ring groove; 115 first limit groove; 116 second snap ring groove; 117 second limit Groove; 1171 limit surface; 118 third snap ring groove; 119 second fixing hole;

12 limit part; 121 limit part body; 1211 limit through hole; 12111 inner wall part; 122 limit protrusion; 123 second limit snap ring;

13 air inlet; 131 air inlet body; 1311 limit boss; 1312 insert shaft; 1313 air inlet hole; 1314 second sealing groove; 1315 third fixing hole; 132 second sealing ring; 133 third limit card Ring; 134 limit pin;

14 conducting part; 141 conducting tube; 1411 first sealing part; 1412 second sealing part; 1413 conducting groove; 142 first sealing ring; 143 first limiting snap ring;

15 piston part; 151 base part; 1511 intake groove; 1512 communication hole; 152 guide part; 153 first air passage;

16 telescopic rod; 161 second airway; 162 outer wall;

17 trachea; 171 third airway;

18 springs;

2 CCD detection device;

3 Machining spindle;

4 work pieces; 41 mark points;

5 Air supply pipe;

6 mounting bracket; 61 guide mounting hole; 62 first clamping part; 63 second clamping part; 64 fixing part; 641 first fixing hole; 65 locking hole;

7Quick change connector.

detailed description

Exemplary embodiments of the present invention are described below with reference to the drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, not to exhaust all feasible ways of the present invention, nor to limit the protection scope of the present invention.

The specific embodiments of the workpiece positioning and processing assembly according to the present invention will be described in detail below with reference to FIGS. 1 to 5.

In this embodiment, as shown in FIG. 1, the workpiece positioning processing assembly includes an auxiliary air blowing device 1, a CCD detection device 2 (position detection device), and a processing spindle 3. Among them, one end of the auxiliary air blowing device 1 is connected to the air supply pipe 5 through the quick-change connector 7, the auxiliary air blowing device 1 is used to blow air to the workpiece 4 to clean the marking point 41 on the workpiece 4, and the CCD detection device 2 is used to detect the mark The position of the point 41 is recognized and transmitted to the numerical control system after the coordinate information is recognized, and the processing spindle 3 is quickly positioned to the position of the mark point 41 to process the workpiece 4 according to the coordinate information.

In the present embodiment, the CCD detection device 2 is provided on the side of the processing spindle 3, and the auxiliary air blowing device 1 is provided on the side of the CCD detection device 2 opposite to the processing spindle 3. Among them, the auxiliary blowing device 1 is fixedly mounted on the CCD detection device 2 through the mounting frame 6.

In this embodiment, as shown in FIGS. 1 and 2, the mounting frame 6 includes a guide mounting hole 61, a first clamping portion 62, a second clamping portion 63, and a fixing portion 64. The first clamping portion 62 and the second clamping portion 63 are oppositely formed to form a guide mounting hole 61, and the auxiliary blowing device 1 is inserted into the guide mounting hole 61.

In this embodiment, the first clamping portion 62 and the second clamping portion 63 are respectively provided with locking holes 65, and the locking fastener is inserted into the locking hole 65 to connect the first clamping portion 62 and the second The clamping portion 63 is locked, thereby locking the auxiliary blowing device 1 in the guide mounting hole 61.

In this embodiment, as shown in FIG. 2, the fixing portion 64 defines a first fixing hole 641, and the mounting frame 6 is fixedly mounted on the CCD detection device 2 by a fastener inserted through the first fixing hole 641.

In this embodiment, the auxiliary blowing device 1 includes a cylinder assembly, a sealing assembly, a telescopic assembly, and an elastic telescopic mechanism.

Cylinder assembly

In this embodiment, as shown in FIG. 3, the cylinder assembly includes the cylinder 11, the stopper 12, the air intake 13, and the conducting portion 14. Among them, the restricting portion 12 and the intake portion 13 are provided at both ends of the cylinder tube 11 in the axial direction, and the conducting portion 14 is disposed between the restricting portion 12 and the intake portion 13 in the axial direction of the cylinder tube 11.

In this embodiment, as shown in FIG. 3, the cylinder 11 is provided with a first conduction air port 111, a second conduction air port 112, a first sealing groove 113, a first snap ring groove 114, and a first limiting groove 115 (Limiting recess), second snap ring groove 116, second limiting groove 117, third snap ring groove 118, and second fixing hole 119.

In this embodiment, as shown in FIG. 3, the first conduction air port 111 and the second conduction air port 112 are spaced apart along the axial direction of the cylinder 11, and the first conduction air port 111 and the second conduction air port 112 It is provided through the wall surface of the cylinder 11.

In this embodiment, as shown in FIGS. 3 and 4, each of the first and second conducting

air ports

111 and 112 is four, and the four first conducting air ports 111 are spaced along the circumferential direction of the cylinder 11 Set at 90 degrees, the four second conducting air ports 112 are arranged at intervals of 90 degrees along the circumferential direction of the cylinder tube 11.

In this embodiment, as shown in FIG. 3, the first sealing groove 113 is an annular groove, and there are two of them. The two first sealing grooves 113 are opened on the outer wall surface of the cylinder 11 and along the Axially spaced apart. Among them, the first conduction air port 111 and the second conduction air port 112 are located between the two first sealing grooves 113 in the axial direction of the cylinder 11.

In this embodiment, as shown in FIG. 3, the first snap ring groove 114 is an annular groove, and there are two of them. The two first snap ring grooves 114 are opened on the outer wall surface of the cylinder 11 and along the cylinder 11 are spaced apart axially. Among them, the two first sealing grooves 113 are located between the two first snap ring grooves 114 in the axial direction of the cylinder 11.

In this embodiment, as shown in FIG. 3, the first limiting groove 115 is opened at the end of the cylinder tube 11 where the limiting portion 12 is provided, and the first limiting groove 115 extends from the end surface of the cylinder tube 11 along the end of the cylinder tube 11. Extending in the axial direction, the first limiting groove 115 penetrates the wall surface of the cylinder tube 11 in the radial direction of the cylinder tube 11. Among them, there are two first limiting grooves 115, which are arranged at intervals of 180 degrees along the circumferential direction of the cylinder tube 11.

In the present embodiment, as shown in FIG. 3, the second snap ring groove 116 is opened in the inner wall of the end of the cylinder 11 where the limiting portion 12 is provided. Among them, the second snap ring groove 116 is cut off by the two first limiting grooves 115 in the circumferential direction of the cylinder tube 11 to form two opposite arc-shaped grooves.

In this embodiment, as shown in FIG. 3, the second limiting groove 117 is opened in the inner wall of the end of the cylinder 11 where the air intake portion 11 is provided, and the second limiting groove 117 runs along the cylinder from the end surface of the end of the cylinder 11 Axial extension of 11. The cross section of the second limiting groove 117 is circular. Of course, the present invention is not limited to this, and the cross section of the second limiting groove 117 may also be polygonal or arc-shaped.

In this embodiment, the diameter of the second limiting groove 117 is greater than the diameter of the inner wall surface of the cylinder 11 adjacent to the second limiting groove 117. The second limiting groove 117 and the second limiting position of the cylinder 11 A limiting surface 1171 is formed between the adjacent inner wall surfaces of the groove 117.

In this embodiment, as shown in FIG. 3, the third snap ring groove 118 is defined in the inner wall surface of the cylinder 11 that defines the second limiting groove 117. Among them, the third snap ring groove 118 is an annular groove.

In this embodiment, as shown in FIG. 3, the second fixing hole 119 is provided through the wall surface of the cylinder 11 that defines the second limiting groove 117, and the second fixing hole 119 is located third in the axial direction of the cylinder 11 Between the snap ring groove 118 and the limiting surface 1171.

In this embodiment, as shown in FIG. 3, the limiting portion 12 includes a limiting portion body 121, a limiting protrusion 122 (limiting convex portion), and a second limiting snap ring 123. The limiter body 121 is generally cylindrical, and the outer diameter of the limiter body 121 matches the diameter of the chamber of the cylinder tube 11, so that the limiter body 121 can be inserted along the axial direction of the cylinder tube 11 In the cavity of the cylinder 11.

In this embodiment, the limiting body 121 is provided with a limiting through hole 1211 for the telescopic component to pass through. The limiting through hole 1211 extends along the axial direction of the limiting body 121. The cross section of the limiting through hole 1211 is substantially oblong.

In this embodiment, the inner wall of the limiting portion body 121 that defines the limiting through hole 1211 is provided with an inner wall portion 12111 (second anti-rotation limiting portion) having a linear cross section.

In this embodiment, as shown in FIG. 3, the limiting protrusion 122 is disposed at one end of the limiting portion body 121, and protrudes from the outer circumferential surface of the limiting portion body 121 in the radial direction of the limiting portion body 121 . Among them, there are two limiting protrusions 122, which are arranged at intervals of 180 degrees in the circumferential direction of the limiting portion body 121.

In the present embodiment, when the limiting portion 12 is inserted into the cylinder tube 11, the first limiting groove 115 and the limiting protrusion 122 cooperate to limit the limiting portion 12. Specifically, the groove wall surface of the first limiting groove 115 perpendicular to the axial direction of the cylinder tube 11 abuts the end surface of the stopper limiting protrusion 122 perpendicular to the axial direction of the cylinder tube 11, preventing the limiting body 121 from further The inside of the cylinder 11 moves. The groove wall surfaces of the first limiting groove 115 parallel to the axial direction of the cylinder tube 11 respectively abut the two end surfaces of the stop limiting protrusion 122 parallel to the axial direction of the cylinder tube 11 to prevent the limiting portion body 121 Relative to the cylinder 11.

At the same time, the second limit snap ring 123 is installed in the second snap ring groove 116, and one end surface of the second limit snap ring 123 is in contact with the end surface of the limit portion body 121 provided with the limit protrusion 122 to prevent the limit The body 121 moves away from the cylinder 11 in the axial direction of the cylinder 11.

In this embodiment, as shown in FIGS. 3 and 4, the air intake 13 includes an air intake body 131, a second seal ring 132, a third limit snap ring 133 and a limit pin 134.

In this embodiment, the air intake body 131 includes a stop boss 1311, an insertion shaft 1312, an air intake hole 1313 (air intake), a second sealing groove 1314, and a third fixing hole 1315. Wherein, the limiting boss 1311 and the insertion shaft 1312 are generally cylindrical, the limiting boss 1311 is disposed at one end of the insertion shaft 1312, and the diameter of the limiting boss 1311 is larger than the diameter of the insertion shaft 1312. The diameter of the limiting boss 1311 matches the diameter of the second limiting groove 117, and the diameter of the insertion shaft 1312 matches the diameter of the chamber of the cylinder 11, so that the intake body 131 can be inserted into the chamber of the cylinder 11 .

In this embodiment, as shown in FIGS. 3 and 4, the air intake hole 1313 is provided along the axial direction of the air intake body 131 through the limiting boss 1311 and the insertion shaft 1312, and the second seal groove 1314 is opened on the insertion shaft The annular groove of the outer circumferential surface of 1312 and the third fixing hole 1315 extend from the outer circumferential surface of the limiting boss 1311 along the radial direction of the limiting boss 1311. Among them, there are two third fixing holes 1315, which are arranged at intervals of 180 degrees in the circumferential direction of the limit boss 1311.

In this embodiment, as shown in FIGS. 4 and 5, when the intake portion 13 is installed in the cylinder 11, one end face of the limiting boss 1311 abuts the limiting surface 1171, and the limiting boss 1311 is located at the In the second limiting groove 117, the insertion shaft 1312 is located in the cavity of the cylinder 11 adjacent to the second limiting groove 117. Among them, the stopper surface 1171 prevents the intake portion 13 from moving toward the inside of the cylinder 11.

In the present embodiment, the second seal ring 132 is provided in the second seal groove 1314 to prevent air leakage when ventilating into the chamber of the cylinder 11.

In this embodiment, the third limiting snap ring 133 is installed in the third snap ring groove 118, and one end face of the third limiting snap ring 133 abuts the end face of the limiting boss 1311 facing away from the insertion shaft 1312, preventing The air intake 13 moves away from the cylinder 11 in the axial direction of the cylinder 11.

In this embodiment, as shown in FIG. 4, the limiting pin 134 is inserted into the second fixing hole 119 and the third fixing hole 1315 to further limit the intake portion 13 and prevent the intake portion 13 from being in the cylinder 11's axial movement.

In this embodiment, as shown in FIGS. 3 and 5, the conducting portion 14 includes a sealing assembly that seals the first conducting air port 111 and the second conducting air port 112 to form a conducting space.

In this embodiment, as shown in FIG. 3, the seal assembly includes a conducting tube 141, a first seal ring 142 (seal), and a first limit snap ring 143.

In this embodiment, as shown in FIGS. 3 and 5, the conduction tube 141 includes a first sealing portion 1411, a second sealing portion 1412 and a conduction groove 1413. Among them, the first sealing portion 1411 and the second sealing portion 1412 are located at both ends of the conducting tube 141, and the conducting groove 1413 is located between the first sealing portion 1411 and the second sealing portion 1412.

In this embodiment, the diameters of the first sealing portion 1411 and the second sealing portion 1412 are equal, and both match the diameter of the outer circumferential surface of the cylinder tube 11, so that the conducting tube 141 can be sleeved on the outer circumferential surface of the cylinder tube 11 .

In this embodiment, the cross section of the conducting groove 1413 is circular, and the diameter of the conducting groove 1413 is larger than the diameter of the first sealing portion 1411 (or the second sealing portion 1412).

In this embodiment, as shown in FIGS. 3 and 5, there are two first seal rings 142, both of which are provided between the conduction tube 141 and the cylinder tube 11.

In this embodiment, as shown in FIG. 5, when the conducting tube 141 is sleeved on the cylinder 11, the two first sealing rings 142 are respectively disposed in the two first sealing grooves 113, and the two first The seal rings 142 are respectively located at the first seal portion 1411 and the second seal portion 1412. At the same time, the conducting groove 1413 communicates with the first conducting air port 111 and the second conducting air port 112. In this way, the conduction tube 141 seals the first conduction air port 111 and the second conduction air port 112 of the cylinder 11 to form a conduction space.

In this embodiment, as shown in FIG. 5, when the conducting tube 141 is sleeved on the cylinder 11, the two ends of the conducting tube 141 are respectively provided with first limiting snap rings 143, two first limiting positions The snap rings 143 are respectively disposed in the two first snap ring grooves 114. Wherein, the two first limiting snap rings 143 respectively abut the end surfaces of both ends of the conducting tube 141 to prevent the conducting tube 141 from moving relative to the cylinder 11 in the axial direction.

Telescopic components

In this embodiment, as shown in FIGS. 3 and 4, the telescopic assembly includes a piston part 15, a telescopic rod 16 and an air blowing pipe 17.

In this embodiment, as shown in FIGS. 3 and 4, the piston portion 15 includes a base portion 151, a guide portion 152 and a first air passage 153. Wherein, the base portion 151 and the guide portion 152 are both substantially cylindrical, and the diameter of the base portion 151 is larger than the diameter of the guide portion 152. The guide portion 152 extends away from the base portion 151 from one end face of the base portion 151.

In this embodiment, as shown in FIG. 4, the first air passage 153 is opened inside the piston portion 15 and extends in the axial direction of the piston portion 15.

In the present embodiment, the piston portion 15 is provided in the cavity of the cylinder 11 between the restricting portion 12 and the intake portion 13, and the outer diameter of the base portion 151 matches the diameter of the cavity, so that the base portion 151 can It moves steadily in the axial direction of the cylinder 11. Among them, the guide portion 152 is located between the base portion 151 and the limiting portion 12.

In this embodiment, as shown in FIGS. 3 and 4, the base 151 is provided with an air inlet groove 1511 and a communication hole 1512. The air inlet groove 1511 is an annular groove opened on the outer circumferential surface of the base 151, and the communication hole 1512 extends in the radial direction of the base 151, and is used to communicate the air inlet groove 1511 with the first air passage 153.

In the present embodiment, there are four communication holes 1512, which are provided at intervals of 90 degrees along the circumferential direction of the base 151.

In this embodiment, as shown in FIGS. 3 and 4, the telescopic rod 16 is provided with a second air passage 161, and the second air passage 161 extends along the axial direction of the telescopic rod 16.

In this embodiment, as shown in FIGS. 3 and 4, the telescopic rod 16 has a substantially flat shaft shape as a whole, and its outer peripheral surface includes an outer wall portion 162 (first anti-rotation limit portion) having a linear cross-section.

In this embodiment, as shown in FIG. 4, one end of the telescopic rod 16 is connected to the guide portion 152 of the piston portion 15, and the other end of the telescopic rod 16 extends through the limiting through hole 1211 of the limiting portion 12 to the cylinder 11 Outside. The outer wall portion 162 of the telescopic rod 16 cooperates with the inner wall portion 12111 so that the telescopic rod 16 cannot rotate relative to the limiting portion 12.

In this embodiment, as shown in FIG. 4, the end of the telescopic rod 16 located outside the cylinder tube 11 is connected to the air blowing pipe 17. Among them, the air blowing pipe 17 is provided with a third air passage 171 communicating with the outside of the cylinder 11.

In this embodiment, as shown in FIG. 4, the first air passage 153, the second air passage 161, and the third air passage 171 are sequentially connected (the first air passage 153, the second air passage 161, and the third air passage 171 are three The person constitutes the blowing airway).

In this embodiment, the telescopic rod 16 and the blower tube 17 are connected by screws. In this way, the air blowing pipe 17 is easy to assemble and disassemble, which is convenient for maintenance and replacement. Of course, the present invention is not limited to this. The telescopic rod 16 and the blowing tube 17 may be connected by other detachable methods, for example, fixed connection by detachable fasteners, and of course, they may be welded together.

In this embodiment, the end of the blower tube 17 facing away from the telescopic rod 16 extends away from the telescopic rod 16 obliquely to the axial direction of the telescopic rod 16. In this way, the air outlet of the blowing pipe 17 can be closer to the marking point 41, and the marking point 41 can be blown and cleaned better.

In this embodiment, the air blowing pipe 17 is made of a metal material.

Elastic expansion mechanism

In this embodiment, as shown in FIGS. 3 and 4, the elastic expansion mechanism is a spring 18. The spring 18 is sleeved on the guide portion 152. One end of the spring 18 abuts the end surface of the limiting portion 12, and the other end abuts On the end surface of the base 151.

The blowing operation process of the auxiliary blowing device 1 of the present invention will be described in detail below with reference to FIGS. 4 and 5.

In the present embodiment, as shown in FIG. 4, when gas is not delivered to the chamber of the cylinder 11 through the air intake 13, the first conduction port 111 is blocked by the base 151 of the piston 15. The air inlet 1313 and the first air passage 153 are not in communication (that is, the air inlet is not in communication with the blowing air passage).

As shown in FIG. 5, when the gas is delivered to the chamber of the cylinder 11 through the air intake 13, the piston 15 compresses the spring 18 in the axial direction of the cylinder 11 under the action of the air pressure and moves out of the cylinder 11 for a predetermined period length. When one end surface of the guide portion 152 abuts one end surface of the limiting portion 12, the base portion 151 no longer blocks the first conduction vent 111, and the second conduction vent 112 communicates with the intake groove 1511, so that the intake hole 1313 and the first One airway 153 communicates. In this way, the gas can enter the chamber of the cylinder 11 from the intake hole 1313, and sequentially pass through the first conduction air port 111, the conduction groove 1413, the second conduction air port 112, the intake groove 1511, the communication hole 1512, the first The air passage 153, the second air passage 161, and the third air passage 171 are output to the outside of the auxiliary blower 1 to blow-clean the marked points 41 on the workpiece 4.

When the gas supply is stopped, the piston 15 is reset by the elastic force of the spring 18.

The working process of the workpiece positioning and processing assembly according to the present invention will be described in detail below with reference to FIGS. 6 to 9.

In this embodiment, as shown in FIG. 6, when it is necessary to perform positioning processing on the workpiece 4, the control device ventilates the auxiliary blowing device 1 and the blowing tube 17 moves downward (in the direction of the arrow extending up and down in FIG. 6) Length, at this time, the internal air path of the auxiliary blowing device 1 is conducted, and the gas can be output to perform the blowing cleaning on the mark point 41 on the work 4.

As shown in FIG. 7, when the auxiliary blowing device 1 performs blowing cleaning on the marked point 41, the CCD detection device 2 recognizes the position of the marked point 41.

As shown in FIG. 8, after the auxiliary blowing device 1 blows and cleans the marking point 41, the control device controls to stop the ventilation to the auxiliary blowing device 1, and the blowing tube 17 is reset by the elastic force of the spring 18. At the same time, the CCD detection device 2 recognizes the coordinate information of the marking point 41 and transmits it to the numerical control system.

As shown in FIG. 9, the processing spindle 3 quickly locates to the mark point 41 according to the coordinate information received by the numerical control system, and starts processing.

By adopting the above technical solution, the auxiliary blowing device or positioning processing component according to the present invention has the following advantages:

(1) In the auxiliary blowing device of the present invention, through the cooperation between the cylinder assembly, the telescoping assembly and the spring, the telescoping assembly can telescopically reciprocate along a straight line, realizing fixed-point blowing without interference with the machine tool Pneumatic action has a good cleaning effect on the workpiece, and its structure is simple, installation and debugging is convenient, and the cost is low.

(2) In the auxiliary air blowing device of the present invention, the air blowing pipe is made of metal material, and the air blowing pipe has only one degree of freedom of movement in one direction, no radial movement, and good stability.

(3) In the positioning processing assembly of the present invention, by using an auxiliary blowing device with a good cleaning effect to clean the marked points of the workpiece, the CCD detection device can accurately locate the position of the marked points, reducing the positioning fixture of the CNC machine tool Accuracy requirements.

The above specific embodiments have elaborated on the technical solution of the present invention in detail, but what needs to be added is:

(1) Although the above embodiment has described the use of a CCD detection device to identify the coordinate information of the marked point, the present invention is not limited to this, and other position detection devices may be used to identify the coordinate information of the marked point.

(2) Although it has been described in the above embodiment that the conducting part includes the sealing assembly, and the conducting air port includes the first conducting air port and the second conducting air port provided at intervals, the present invention is not limited to this. The first conducting air port and The second conducting air port may be connected into an integral conducting air port, for example, a groove extending in the axial direction of the cylinder barrel may be provided between the first conducting air port and the second conducting air port to make the first The conduction air port and the second conduction air port are connected as a whole, as long as the piston part moves along the axial direction of the cylinder tube by a predetermined length, the intake port and the blowing air channel may be communicated through the conduction air port. It can be understood that at this time, the conducting tube may not be provided with a conducting groove, and the inner wall surface of the conducting tube may completely fit the outer wall surface of the cylinder.

In addition, when the first conducting air port and the second conducting air port are connected as an integral conducting air port, the conducting air port may not be provided through the outer wall surface of the cylinder tube, so that the inner wall of the cylinder tube can be formed to conduct It can be understood that the groove portion (that is, the conducting space) does not need to provide a sealing assembly at this time.

(3) Although the number of the first conduction air port and the second conduction air port are four in the above embodiment, the present invention is not limited to this, and the number of the first conduction air port or the second conduction air port may be According to the actual situation, it can be set to one, two, three, five or more.

(4) Although it has been described in the above embodiment that the cylinder is provided with the first limiting groove and the limiting protrusion of the limiting portion cooperate to axially and circumferentially limit the limiting portion, the present invention is not limited to this It is also possible to provide a limit protrusion in the cylinder, and correspondingly set a limit groove in the limit portion to cooperate with the limit protrusion.

(5) Although it has been described in the above embodiment that the body of the limiting portion is provided with an inner wall portion that cooperates with the outer wall portion of the telescopic rod so that the telescopic rod cannot rotate relative to the body of the limiting portion, the present invention is not limited to this, but may also A convex portion or a concave portion is provided on the inner wall of the body, and accordingly a concave portion or a convex portion is provided on the telescopic rod to cooperate, so that the telescopic rod cannot rotate relative to the body of the limiting portion.

(6) Although it has been described in the above embodiment that the seal assembly includes a guide tube sleeved on the cylinder barrel, the present invention is not limited to this, the guide tube may be replaced with other types of sealing members, and may not be sleeved on the cylinder Outside the cylinder, it suffices to be able to seal the conduction vent to form a conduction space.

(7) Although it has been described in the above embodiment that the base portion of the piston portion is provided with an air inlet groove, the present invention is not limited to this, and the air inlet groove may not be provided. When the guide portion abuts the limit portion, the second conduction The air port and the communication hole directly communicate with each other.

(8) Although the number of communication holes is described as four in the above embodiment, the present invention is not limited to this, and the number of communication holes may be one, two, three, five, or more.

(9) Although the above-mentioned embodiment has explained that the telescopic rod and the blowing tube are detachably connected, the present invention is not limited to this, and the telescopic rod and the blowing tube may be integrally formed.

(10) In the above embodiment, the entire air path in the auxiliary blowing device is conducted when the guide portion abuts the limit portion. However, the present invention is not limited to this. The guide portion may not be in contact with the limit portion. The structural parameters of the spring can be designed or the pressure of the input gas can be controlled, so that after the piston part moves a predetermined length, the piston part maintains balance under the action of the gas pressure and the spring, and at the same time, the entire air path guide in the auxiliary blowing device Through (that is, the air inlet communicates with the blowing air passage through the conducting space).

(11) Although the elastic expansion and contraction mechanism is described as a spring in the above embodiment, the present invention is not limited to this, and the elastic expansion and contraction mechanism may be configured as another type of elastic expansion and contraction mechanism.

In addition, the present invention also provides a machining center, which includes the above-mentioned positioning processing component.

It can be understood that the machining center provided with the above-mentioned positioning processing component has the same beneficial effect.

Claims

An auxiliary blowing device, characterized in that the auxiliary blowing device includes a cylinder assembly, a telescopic assembly and an elastic telescopic mechanism,

The cylinder barrel assembly includes a cylinder barrel, a limiting portion, an air intake portion, and a conducting portion, and the limiting portion and the air intake portion are spaced along the axial direction of the cylinder barrel and placed in the cylinder barrel. The conducting portion is provided between the limiting portion and the air intake portion in the axial direction of the cylinder,

The limiting portion is provided with a limiting through hole extending along the axial direction, the air inlet is provided with an air inlet, and the conductive portion forms a conductive space,

One end of the telescopic assembly is disposed in the cavity of the cylinder barrel between the limiting portion and the air intake portion, and the other end extends through the limiting through hole to the cylinder barrel external,

The telescopic assembly is provided with an air blowing channel, and the air blowing channel communicates with the outside of the cylinder,

The elastic telescopic mechanism is disposed between an end of the telescopic assembly located in the cylinder and the limiting portion,

When gas is input into the cylinder through the air inlet, the telescopic assembly can compress the elastic telescopic mechanism along the axial direction to move under the pressure of the gas and move from the cylinder The cylinder extends a predetermined length so that the air inlet communicates with the blowing air channel through the conducting space,

When the input of the gas is stopped, the telescopic assembly can partially retract the cylinder tube under the action of the elastic telescopic mechanism to reset, so that the air inlet is not in communication with the blowing air passage.
The auxiliary air blowing device according to claim 1, wherein the limiting part is provided with a limiting convex part or a limiting concave part, and the cylinder is provided with a limiting concave part or a limiting convex part, the limiting convex part The portion cooperates with the limiting concave portion so that the limiting portion cannot rotate relative to the cylinder.
The auxiliary blowing device according to claim 1, wherein the conducting portion includes a conducting air port and a sealing assembly, the conducting air port penetrates the side wall of the cylinder tube in the radial direction of the cylinder tube , The sealing assembly seals the conducting air port to form the conducting space.
The auxiliary blowing device according to claim 3, characterized in that the sealing assembly includes a conducting tube and a sealing member, the conducting tube is sleeved outside the cylinder, and the sealing member is disposed at the Between the conducting tube and the cylinder tube, the conducting tube seals the conducting air port to form the conducting space.
The auxiliary blowing device according to claim 1, wherein the telescopic assembly includes a piston part, a telescopic rod and an air blowing tube,

The piston portion is provided in a cavity of the cylinder located between the limit portion and the air intake portion,

One end of the telescopic rod is connected to the piston part, and the other end extends through the limit through hole to the outside of the cylinder and is connected to the air blowing pipe,

The blowing air channel includes a first air channel opened in the piston part, a second air channel opened in the telescopic rod, and a third air channel opened in the blowing tube, the first air channel, The second air passage communicates with the third air passage in sequence.
The auxiliary blowing device according to claim 5, wherein the telescopic rod is provided with a first anti-rotation limiter, and a wall surface of the limiter that defines the limiting through hole is provided with a second anti-rotation limit The first anti-rotation limiting portion cooperates with the second anti-rotation limiting portion so that the telescopic rod cannot rotate relative to the limiting portion.
The auxiliary blowing device according to claim 6, wherein when the air inlet communicates with the blowing air passage through the conducting space, One end abuts the limiting portion.
The auxiliary blowing device according to claim 5, wherein the elastic expansion mechanism is a spring, and/or the blowing tube is made of a metal material.
A workpiece positioning and processing assembly, characterized in that the workpiece positioning and processing assembly includes a position detection device, a processing spindle and the auxiliary blowing device according to any one of claims 1 to 8,

The machining spindle is used for machining the workpiece,

The position detection device is provided on one side of the processing spindle, and is used for detecting and positioning the workpiece,

The auxiliary blowing device is disposed on a side of the position detection device opposite to the processing spindle, and is used for blowing to clean the marked points of the workpiece.
A machining center, characterized in that the machining center includes the auxiliary blowing device according to any one of claims 1 to 8 or the workpiece positioning and processing assembly according to claim 9.