CN212240184U

CN212240184U - Internal stay clamping device

Info

Publication number: CN212240184U
Application number: CN202020327894.6U
Authority: CN
Inventors: 万平
Original assignee: Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd
Current assignee: Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-29
Anticipated expiration: 2030-03-16

Abstract

The utility model provides an inner supporting clamping device, which comprises an inner supporting chuck, wherein the inner supporting chuck comprises an inner supporting part, the inner supporting part is provided with a notch around a central shaft, the inner supporting chuck is of a hollow structure, and the inner supporting chuck is arranged on a main shaft of a machine tool; the ejection core is slidably mounted in the machine tool spindle, can be far away from or close to the direction of the inward support chuck and can be ejected into the inward support chuck. The utility model discloses a thimble can slide and push up under the promotion of push rod and go into to the internal stay chuck, and the notch has been seted up around the center pin to the internal stay portion of internal stay chuck, can strut the internal stay portion when the thimble pushes up, supports the inside of product, and the product can not take place the skew, can reduce the processing degree of difficulty. Through the displacement distance of control ejector core to the position of supporting portion in the control ejector core supports, can support not unidimensional product, avoids product deformation or fracture, improves the product yields.

Description

Internal stay clamping device

Technical Field

The utility model relates to a clamping device especially relates to an internal stay clamping device.

Background

In the 3C industry, a lens ring part has a feature of having a small hole and a thin wall, and when an existing lathe is used for machining the lens ring part, the outer diameter of the part is generally clamped by a clamping device, and then the part is machined correspondingly. However, along with the development of science and technology, the structure of the outer diameter part of the part is more complex, the size of the product is small, the outer diameter of the clamping part is used for machining, the deviation is easily generated in the machining process, if the clamping force in the machining process is too large, the product is easily deformed or broken, the yield of the product is low, and the machining difficulty is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an internal stay clamping device, this internal stay clamping device be convenient for the centre gripping product, and can improve the yields of product to thereby reduce the processing degree of difficulty and improve machining efficiency.

The inner support clamping device according to the embodiment of the utility model comprises an inner support chuck, wherein the inner support chuck comprises an inner support part, the inner support part is provided with a notch around a central shaft, the inner support chuck is of a hollow structure, and the inner support chuck is arranged on a main shaft of a machine tool; the ejection core is slidably mounted in the machine tool spindle, and can be far away from or close to the direction of the internal support chuck and ejected into the internal support chuck.

According to the utility model discloses internal stay clamping device has following beneficial effect at least: the utility model discloses an internal stay chuck is installed on the lathe main shaft, apical lamella slidable mounting is in the lathe main shaft, in the internal stay of internal stay chuck was put into earlier to the product, push rod through in the main shaft promotes apical lamella and slides, the apical lamella is close to the internal stay chuck and pushes into to the internal stay chuck in, because the notch has been seted up around the center pin to the internal stay portion of internal stay chuck, can strut the internal stay portion when the apical lamella pushes up, strut the back, support the inside of product, the product can be processed after by the centre gripping, in the whole course of working of product, the product is supported by the internal stay portion, the product overlaps in the internal stay chuck in other words, the skew can not take place for the product, can reduce the processing degree of difficulty, thereby can effectively improve machining efficiency. Simultaneously, the displacement of accessible control ejector core to the position of control ejector core support top inner supporting portion can support not unidimensional product, also can avoid the product to warp or split, improves the yields of product.

According to some embodiments of the utility model, the internal stay chuck includes the base, the internal stay portion sets up on the base, set up the opening of intercommunication internal stay portion and lathe main shaft on the base.

According to some embodiments of the utility model, the internal stay clamping device still includes the installed part, the internal stay portion passes the installed part, the installed part with the lathe main shaft is connected, base extrusion install in the installed part with between the lathe main shaft.

According to some embodiments of the invention, be equipped with in the installed part with lathe main shaft threaded connection's screw thread.

According to some embodiments of the utility model, the base orientation one side of lathe main shaft is protruding to be equipped with annular boss, annular boss stretches into in the lathe main shaft.

According to some embodiments of the invention, the inner support portion is a truncated cone-shaped structure.

According to the utility model discloses a some embodiments, interior clamping device that props still includes the ejector pad, ejector pad slidable mounting in the lathe main shaft, the ejector pad can court the direction of interior support chuck is kept away from or is close to, the ejector core install in on the ejector pad, the ejector core can be along with the slip of ejector pad and push up to in the interior support chuck.

According to the utility model discloses a some embodiments, it has the installing port to open on the ejector pad, the plunger install in the installing port.

According to some embodiments of the utility model, the internal stay clamping device still includes the elastic component, the elastic component cover is located on the ejector core, the elastic component set up in the internal stay chuck with between the ejector pad. The inner support clamping device is provided with the elastic piece, when the top core needs to be jacked in, the elastic piece is compressed, and the phenomenon that the inner support clamping head is damaged due to overlarge distance in the propelling process can be avoided; when the ejection core needs to be withdrawn, the elastic piece stretches and pushes the push block to the direction away from the inner support chuck, so that the ejection core is withdrawn.

According to some embodiments of the present invention, an annular groove is formed on the push block, and the elastic member is located in the annular groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of the inner supporting and clamping device of the present invention.

Fig. 2 is the structural schematic diagram of the inner supporting clamping device of the present invention installed on the main shaft of the machine tool.

Fig. 3 is a schematic structural view of the inner supporting and clamping device of fig. 2 in a product clamping state.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 is a front view of the inner support chuck of the present invention.

Fig. 6 is a bottom view of the inner support chuck of the present invention.

Fig. 7 is a schematic structural diagram of the mounting member of the present invention.

Fig. 8 is a schematic structural view of the top core of the present invention.

Fig. 9 is a schematic structural diagram of the push block of the present invention.

Fig. 10 is a right side view of the push block of the present invention.

Reference numerals:

the inner support clamping device 100, the inner support chuck 110, the inner support part 111, the notch 1111, the base 112, the opening 1121, the annular boss 1122, the top core 120, the mounting piece 130, the push block 140, the annular groove 141, the mounting opening 142 and the elastic piece 150.

A machine tool spindle 200.

Product 300.

Detailed Description

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

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, outer, inner, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In order to clearly understand the technical features, objects and effects of the present invention, the detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present invention provides an internal supporting clamping device 100, which includes an internal supporting chuck 110 and a top core 120, wherein the internal supporting chuck 110 includes an internal supporting portion 111, the internal supporting portion 111 surrounds a central shaft and is provided with a notch 1111, the internal supporting chuck 110 is a hollow structure, the internal supporting chuck 110 is installed on a machine spindle 200, the top core 120 is slidably installed in the machine spindle 200, the top core 120 can be far away from or close to the internal supporting chuck 110 along the direction of the internal supporting chuck 110 and is pushed into the internal supporting chuck 110, so that the internal supporting chuck 110 is opened and clamps a product 300. The internal support clamping device 100 is detachably mounted on a main shaft of a machine tool, and particularly, the internal support clamping device 100 is suitable for auxiliary shafts of double-main-shaft numerical control machine tools and main shafts of other small-diameter precision machine tools. The product 300 is supported by the internal support chuck 110, the product 300 cannot deviate in the processing process, the processing difficulty can be reduced, and the processing efficiency can be effectively improved. Meanwhile, the moving distance of the top core 120 can be controlled, so that the top core 120 is controlled to abut against the inner supporting portion 111, products 300 with different sizes can be supported, the products 300 can be prevented from being deformed or broken, and the yield of the products 300 is improved.

With continued reference to fig. 1-4, more specifically, the inner support clamping device 100 further includes a mounting member 130 and a pushing block 140. The core 120 is mounted on the push block 140, the push block 140 is slidably mounted on the machine spindle 200, and the inner support collet 110 is mounted on the machine spindle 200 through the mounting member 130. When the product 300 needs to be clamped and machined, the product 300 is placed on the inner support chuck 110, a push rod of a machine tool pushes the push block 140 to slide, the top core 120 moves towards the direction close to the inner support chuck 110 along with the sliding of the push block 140 and is pushed into the inner support chuck 110, the inner support chuck 110 is pushed into the top core 120, the inner support chuck 110 can be propped open, the inside of the product 300 placed on the inner support chuck 110 can be supported, the product 300 can be effectively supported, the product 300 is guaranteed not to deviate, and the machining difficulty can be reduced. The utility model discloses an internal stay clamping device 100 acts on the internal diameter of product 300, supports it from the inside of product 300 to the in-process of centre gripping processing can be avoided to the outside of centre gripping product 300, because product 300 wall is thin and lead to warping or splitting, can improve the yields of product 300.

When the control device receives a clamping instruction, the push rod is controlled to push the push block 140 to slide towards the direction close to the inner support chuck 110, the ejection core 120 is driven by the push block 140 to slide towards the direction close to the inner support chuck 110 and is ejected into the inner support chuck 110, the inner support chuck 110 is opened to be matched with the product 300, the product 300 is clamped by the inner support chuck 110, the product 300 is processed after clamping, after processing is finished, when the control device receives a loosening instruction, the push block 140 is controlled to reset and slide towards the direction far from the inner support chuck 110, the ejection core 120 is driven by the push block 140 to slide towards the direction far from the inner support chuck 110 and is ejected from the inner support chuck 110, the inner support chuck 110 is restored to the original shape, the product 300 is loosened, and the product 300 can be taken down after loosening. The advancing distance of the push rod can be controlled through the control of the control device, and then the jacking depth of the jacking core 120 is controlled, so that the propping degree of the internal-propping chuck 110 is regulated and controlled, and the internal-propping chuck 110 can be used for clamping products 300 with different sizes.

Referring to fig. 1, 2, 5 and 6, the inner support chuck 110 further includes a base 112, the inner support portion 111 is disposed on the base 112, in this embodiment, the inner support portion 111 and the base 112 are integrally formed, the inner support portion 111 is a hollow structure, an opening 1121 for communicating the inner support portion 111 and the machine spindle 200 is formed on the base 112, and the top core 120 can penetrate through the opening 1121 and be pushed into the inner support portion 111. More specifically, in the present embodiment, the number of the notches 1111 is 4, and the notches 1111 are uniformly distributed on the inner supporting portion 111. The inner supporting portion 111 is a circular truncated cone structure, an annular boss 1122 is convexly arranged on one side of the base 112 facing the machine tool spindle 200, and the whole base 112 is of a T-shaped structure and is wide at the top and narrow at the bottom. The material of the internal support chuck 110 is elastic steel, the material of the internal support chuck 110 is elastic material, when the top core 120 penetrates through the opening 1121 of the base 112 and then is pushed into the internal support portion 111, the top core 120 is pushed into the internal support portion 111 to be propped open, so that the product 300 is completely supported, the machine tool can process the product 300, in the processing process, under the support of the top core 120, the internal support portion 111 is propped open and completely supports the product 300, and the product 300 can be ensured not to deviate. In the present embodiment, the inner supporting portion 111 is a circular truncated cone-shaped structure, and the shape of the inner supporting portion 111 may be changed according to the actual shape of the product 300, for example, the inner supporting portion 111 is configured as a cylinder or a cone. Meanwhile, the number of the notches 1111 of the inner support portion 111 may be 2, 3 or 5.

Referring to fig. 1, 4 and 7, the inner supporting and clamping device 100 further includes a mounting member 130. After the inner support portion 111 passes through the attachment 130, the attachment 130 is connected to the machine spindle 200, and the base 112 is press-fitted between the attachment 130 and the machine spindle 200, so that the inner support collet 110 is fitted to the machine spindle 200. More specifically, the machine spindle 200 is provided with a thread, and correspondingly, the mounting member 130 is provided with a thread which is in threaded connection with the machine spindle 200, and the mounting member 130 is mounted on the machine spindle 200 through the threaded connection. In this embodiment, the mounting member 130 is a nut. After the mounting member 130 passes through the inner supporting portion 111, the horizontal end of the T-shaped base 112 is clamped on the mounting member 130, when the mounting member 130 mounts the inner support clamp 110 on the machine spindle 200, the horizontal end of the T-shaped base 112 is press-mounted between the mounting member 130 and the machine spindle 200, that is, clamped by the mounting member 130 and the machine spindle 200, and the vertical end (i.e., the annular boss 1122) of the T-shaped base 112 extends into the machine spindle 200 to fix the position of the inner support clamp 110 and position the position of the inner supporting portion 111, so that the top core 120 can accurately enter the inner supporting portion 111 under the pushing of the push rod.

In this embodiment, the inner supporting clamping device 100 includes an inner supporting clamping head 110 and a mounting member 130, the inner supporting clamping head 110 includes an inner supporting portion 111 and a base 112, the inner supporting portion 111 and the base 112 are integrally formed, and the inner supporting clamping head 110 and the mounting member 130 are a split structure. In another embodiment, the inner support clip 110 and the mounting member 130 may also be integrally formed; in another embodiment, the inner support clip 110 may not be provided with a base, and the inner support portion 111 is integrally formed with the mounting member 130; in another embodiment, the attachment 130 and the base 112 are not provided, and a connecting portion connected to the machine spindle 200 is provided at the bottom of the inner support portion 111, and the inner support portion 111 is directly attached to the machine spindle 200 through the connecting portion.

Referring to fig. 4 and 8, the inner supporting clamping device 100 further includes a pushing block 140, the pushing block 140 is slidably mounted in the machine spindle 200, the pushing block 140 can move away from or close to the inner supporting chuck 110, the top core 120 is mounted on the pushing block 140, in this embodiment, the top core 120 is made of SKD11, the head of the top core 120 is in a gradually shrinking shape, the top core 120 can be pushed into the inner supporting chuck 110 along with the sliding of the pushing block 140 to prop open the inner supporting portion 111, so that the inner supporting portion 111 is propped open to completely support the product 300, and the product 300 is prevented from shifting during the processing process.

Referring to fig. 4, the inner supporting clamping device 100 further includes an elastic member 150, the elastic member 150 is sleeved on the top core 120, and the elastic member 150 is disposed between the inner supporting clamping head 110 and the pushing block 140. In the present embodiment, the elastic member 150 is a return spring. Of course, in addition to using the elastic member 150 to reset the push block 140 and the core 120, a driving device may be provided to drive the push block 140 and the core 120 to reset, and another kind of elastic member 150 may be used to reset the push block 140 and the core 120.

Referring to fig. 4, 9 and 10, more specifically, the pushing block 140 is provided with an annular groove 141, and the elastic member 150 is located in the annular groove 141 after being sleeved on the top core 120.

Referring to fig. 4 and 9, in the present embodiment, a mounting opening 142 is formed on the push block 140, the mounting opening 142 is located at the center of the annular groove 141, and after the top core 120 is engaged with the mounting opening 142, the top core 120 is mounted on the push block 140. The inner part of the other side of the push block 140 is hollow, the mounting port 142 is communicated with the inner part of the other side of the push block 140, the push block 140 props against the push core 120 after the push rod enters the push block 140, the push block 140 slides along with the push core 120 under the pushing of the push rod due to the clamping of the push core 120 and the mounting port 142, the elastic part 150 is compressed in the process of approaching the inner support chuck 110, the push core 120 props into the inner support chuck 110, the inner support chuck 110 is supported, and the product 300 is clamped; when the push rod is withdrawn, the core 120 and the push block 140 are withdrawn under the action of the elastic member 150, so that the inner support chuck 110 is restored to the original shape, and the product 300 is released. In another embodiment, the push block 140 is a solid structure, and the push block 140 is directly pushed by the push rod to move, so as to drive the top core 120 to slide, and in the process of approaching the inner support chuck 110, the elastic member 150 is compressed, and the top core 120 is pushed into the inner support chuck 110 to support the inner support chuck 110, so as to clamp the product 300; when the push rod is withdrawn, the core 120 and the push block 140 are withdrawn under the action of the elastic member 150, so that the inner support chuck 110 is restored to the original shape, and the product 300 is released.

With reference to fig. 1 to 10, the operation process of the inner support clamping device 100 of the present invention is as follows: the inner support chuck 110 is first fixed to the machine spindle 200 by the mounting member 130, the top core 120 is mounted on the push block 140, and the elastic member 150 is sleeved on the top core 120. The product 300 to be processed is placed on the inner supporting portion 111 of the inner supporting chuck 110. When the control device receives a clamping instruction, the push rod is controlled to push the top core 120 to slide towards the direction close to the inner support chuck 110, so as to drive the top core 120 and the push block 140 to slide towards the direction close to the inner support chuck 110, the elastic part 150 is compressed during the movement of the push block 140, the top core 120 is pushed into the inner support chuck 110, so that the inner support chuck 110 is expanded to be matched with the product 300, so that the product 300 is clamped by the inner support chuck 110, the product 300 is processed after being clamped, after the processing is finished, when the control device receives a loosening instruction, the push rod is controlled to withdraw, at the moment, the push block 140 is reset, and slides towards the direction far away from the inner support chuck 110, after the push core 120 and the slide block 140 lose the pushing force of the push rod, the elastic part 150 which is originally in a compressed state is stretched, the push block 140 is pushed to move towards the direction far away from the inner support chuck 110, so as to drive the top, and the inner support jaw 110 is withdrawn, the inner support jaw 110 is restored to the original shape, and the product 300 is loosened, and the product 300 can be removed after the loosening. After the product 300 is taken, a new product 300 to be processed may be replaced, and the above steps may be repeated to process the product 300.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An internal stay clamping device, comprising:

the inner support chuck comprises an inner support part, the inner support part is provided with a notch around the central shaft, the inner support chuck is of a hollow structure, and the inner support chuck is arranged on a machine tool spindle;

the ejection core is slidably mounted in the machine tool spindle, and can be far away from or close to the direction of the internal support chuck and ejected into the internal support chuck.

2. The inner support clamping device as claimed in claim 1, wherein the inner support chuck comprises a base, the inner support portion is disposed on the base, and the base is provided with an opening communicating the inner support portion with a spindle of a machine tool.

3. The inner support clamping device of claim 2 further comprising a mounting member through which the inner support portion passes, the mounting member being connected to the machine spindle, the base being compression mounted between the mounting member and the machine spindle.

4. The internal stay clamping device of claim 3 wherein the mounting member is internally threaded for threaded engagement with the spindle of the machine tool.

5. The inner support clamping device according to claim 2, wherein an annular boss is convexly arranged on one side of the base facing the machine tool spindle, and the annular boss extends into the machine tool spindle.

6. The inner support gripping apparatus of claim 1, wherein the inner support portion is of a frustoconical configuration.

7. The inner support clamping device according to claim 1, further comprising a pushing block, wherein the pushing block is slidably mounted in the machine tool spindle, the pushing block can move away from or close to the inner support chuck, the ejector core is mounted on the pushing block, and the ejector core can be ejected into the inner support chuck along with the sliding of the pushing block.

8. The internal stay clamping device as claimed in claim 7, wherein said push block is formed with a mounting opening, and said core member is mounted in said mounting opening.

9. The internal stay clamping device of claim 7 further comprising an elastic member, wherein the elastic member is sleeved on the top core, and the elastic member is arranged between the internal stay chuck and the push block.

10. The internal stay clamping device of claim 9 wherein the push block defines an annular groove and the resilient member is disposed within the annular groove.