CN214488883U

CN214488883U - Combined clamp and machine tool

Info

Publication number: CN214488883U
Application number: CN202023350549.3U
Authority: CN
Inventors: 陈凯斌
Original assignee: Meifu Precision Manufacturing Shenzhen Co ltd
Current assignee: Meifu Precision Manufacturing Shenzhen Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-26
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a machine-building technical field discloses a modular fixture and lathe, and modular fixture includes pedestal, a plurality of clamping jaw and a plurality of cushion. A clamping space for containing a workpiece to be machined is enclosed between the clamping jaws, and the clamping jaws are used for clamping the workpiece arranged in the clamping space from the circumferential direction. The surface of each cushion block facing the clamping space is a butting surface for butting a workpiece arranged in the clamping space, so that the deformation of the workpiece can be effectively avoided, and the butting action of the cushion blocks is beneficial to the processing of the end surface of the workpiece, thereby ensuring the flatness of the end surface of the workpiece after processing, and being suitable for processing the workpiece with higher requirement on the flatness of the end surface. A machine tool comprising the modular fixture described above also has the advantages described above.

Description

Combined clamp and machine tool

Technical Field

The utility model relates to a machine-building technical field especially relates to a modular fixture and lathe.

Background

When a milling machine is used for axially milling some disc-shaped workpieces, clamping jaws are usually adopted for clamping, but when the milling cutter is used for processing the workpieces, the clamping action of the clamping jaws or the axial action of the milling cutter easily deforms the workpieces, and the end faces of the workpieces cannot meet the parallelism requirement easily.

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 a modular fixture that can effectively prevent the work piece deformation. And provides a machine tool having the combined clamp.

According to the utility model discloses a modular fixture of first aspect embodiment includes:

a base body;

the clamping jaws are circumferentially distributed on the base body and can move relative to the base body to be opened or closed, a clamping space for accommodating a workpiece to be machined is defined between the clamping jaws, and the clamping jaws are used for clamping the workpiece arranged in the clamping space in the circumferential direction;

the cushion blocks are arranged between the adjacent clamping jaws and connected to the seat body, and one surface, facing the clamping space, of each cushion block is a butting surface used for butting against the workpiece arranged in the clamping space.

According to the utility model discloses modular fixture has following beneficial effect at least: a clamping space for containing a workpiece to be machined is enclosed between the clamping jaws, and the clamping jaws are used for clamping the workpiece arranged in the clamping space from the circumferential direction. The cushion blocks are arranged between the adjacent clamping jaws and connected to the base body, one surface, facing the clamping space, of each cushion block is a butting surface used for butting a workpiece arranged in the clamping space, deformation of the workpiece can be effectively avoided, and the butting effect of the cushion blocks is beneficial to machining of the end face of the workpiece, so that the flatness requirement of the end face of the machined workpiece is guaranteed.

According to some embodiments of the invention, each the holding surfaces are flush with each other.

According to some embodiments of the present invention, the clamping jaw comprises a connecting portion and a clamping portion, the connecting portion is used for connecting the seat body and can move relative to the seat body; the clamping part is detachably connected to the connecting part and used for clamping the workpiece arranged in the clamping space.

According to the utility model discloses a some embodiments, the constant head tank has been seted up on the connecting portion, it is protruding to be provided with the location on the clamping part, the location arch inlays to be located in the constant head tank.

According to some embodiments of the utility model, the clamping jaw the clamping part orientation a side surface in centre gripping space is the cambered surface, each the radius of cambered surface is the same.

According to the utility model discloses a some embodiments, wherein some clamping jaw the clamping part orientation a side surface in centre gripping space is the plane, all the other the clamping jaw the clamping part orientation a side surface in centre gripping space is the cambered surface, each the radius of cambered surface is the same.

According to some embodiments of the present invention, a guide groove is formed on a surface of the seat body facing the clamping space, the guide groove penetrates through to an outer side wall of the seat body, a limit groove is formed in the guide groove, and an extending direction of the limit groove is consistent with a length direction of the guide groove; the connecting part is located in the guide groove, a limiting edge is arranged on the connecting part corresponding to the limiting groove, and the limiting edge is located in the limiting groove and can slide along the limiting groove.

According to some embodiments of the utility model, the cushion with through round pin hub connection between the pedestal.

According to some embodiments of the utility model, the cushion is cylinder or cuboid, the one end of cylinder connect in the pedestal, the terminal surface of the other end does support the face, the orientation centre gripping space.

According to the utility model discloses a lathe of second aspect embodiment, including frame, processingequipment and the utility model discloses a modular fixture of first aspect embodiment, modular fixture connect in the frame, modular fixture is used for the centre gripping to wait the work piece of processing, processingequipment is used for right the work piece is processed.

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 invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic structural view of a combined clamp according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a clamping jaw in the embodiment of the present invention;

fig. 3 is a schematic structural view of a seat body in an embodiment of the present invention;

FIG. 4 is a schematic structural view of a modular fixture according to another embodiment of the present invention;

FIG. 5 is a schematic view of the embodiment of FIG. 4 used to clamp a workpiece.

Reference numerals:

the base body 100, the guide groove 110 and the limiting groove 120;

a clamping jaw 200, a connecting part 210, a first positioning groove 211, a second positioning bulge 212, a limiting edge 213, a clamping part 220,

a first positioning bulge 221, a second positioning groove 222, a cambered surface 223, a clamping block 224 and a clamping surface 225;

a cushion block 300 and a butting surface 310.

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 indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on 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.

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 the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural view of a modular fixture according to an embodiment of the present invention, referring to fig. 1, the modular fixture according to an embodiment of the present invention includes a base 100, a plurality of clamping jaws 200, and a plurality of spacers 300. The clamping jaws 200 are circumferentially distributed on the base body 100 and can move relative to the base body 100 to open or close, so that clamping and releasing can be realized, a clamping space for accommodating a workpiece to be machined is defined between the clamping jaws 200, and the clamping jaws 200 are used for clamping the workpiece arranged in the clamping space from the circumferential direction. The cushion blocks 300 are arranged between the adjacent clamping jaws 200 and connected to the base body 100, one surface of each cushion block 300 facing the clamping space is a supporting surface 310 for supporting a workpiece arranged in the clamping space, so that the workpiece can be effectively prevented from deforming, and the supporting action of the cushion blocks 300 is beneficial to the processing of the end surface of the workpiece, thereby ensuring the flatness of the end surface of the processed workpiece.

In the above embodiment, the abutting surfaces 310 are flush with each other and are suitable for workpieces with flat bottom surfaces, and the abutting surfaces 310 of the cushion block 300 abut against the bottom surfaces of the workpieces, so that deformation of the workpieces can be effectively reduced, and the flatness of the end face machining of the workpieces can be ensured. In other embodiments, each abutting surface 310 may also be reasonably arranged according to the specific structure of the bottom surface of the workpiece, so that the abutting surface 310 of the pad 300 abuts against the bottom surface of the workpiece, thereby reducing the deformation of the workpiece.

Fig. 2 is a schematic structural view of a clamping jaw in an embodiment of the present invention, referring to fig. 1 and fig. 2, in the combined clamp in the above embodiment, the clamping jaw 200 includes a connecting portion 210 and a clamping portion 220, the connecting portion 210 is used for connecting the seat body 100 and can move relative to the seat body 100; the clamping portion 220 is detachably coupled to the connecting portion 210 for clamping the workpiece placed in the clamping space.

In some embodiments, the connecting portion 210 is provided with a positioning groove, the clamping portion 220 is provided with a positioning protrusion, and the positioning protrusion is embedded in the positioning groove, so that the connecting portion 210 and the clamping portion 220 can be assembled to realize quick spacing. Specifically, the connecting portion 210 is provided with a first positioning groove 211, the clamping portion 220 is provided with a first positioning protrusion 221, and during assembly, the first positioning protrusion 221 is embedded into the first positioning groove 211, so that the connecting portion 210 and the clamping portion 220 can be quickly positioned, and then the fastening connection is performed through a fastener. Connecting portion 210 can also be provided with second location arch 212, correspondingly, be provided with second constant head tank 222 on the clamping part 220, this second constant head tank 222 is the bar groove that extends along the moving direction of clamping jaw 200, second location arch 212 is the strip arris form that extending direction and this second constant head tank 222 are unanimous, during the assembly, with first location arch 221 embedding first constant head tank 211 in, and with second location arch 212 embedding second constant head tank 222 in, can prevent the mutual displacement between clamping part 220 and connecting portion 210, can prevent the relative rotation between the two again, rethread fastener carry out fastening connection can, thereby realize the quick location installation of the two.

In some embodiments, the side surface of the clamping portion 220 of the clamping jaw 200 facing the clamping space is an arc surface 223, the radius of each arc surface 223 is the same, the clamping portion is suitable for clamping a workpiece whose outer peripheral surface is a cylindrical surface, and when clamping, the arc surface 223 can be attached to the outer peripheral surface of the workpiece, so that the centering effect is achieved, and the problem of extrusion deformation of the outer peripheral surface caused by clamping is avoided to a certain extent. The radius of the curved surface 223 may be set according to the radius of the outer circumferential surface of the workpiece. Therefore, the clamping jaw 200 can be provided with a plurality of sets of clamping parts 220 with different cambered surface 223 radiuses, and corresponding replacement is carried out according to the outer diameter of the processed workpiece, so that the adaptability of the clamp is enhanced.

Fig. 3 is a schematic structural view of the base body according to an embodiment of the present invention, referring to fig. 2 and fig. 3, in some embodiments, a guide groove 110 is disposed on a side surface of the base body 100 facing the clamping space, the guide groove 110 penetrates through to an outer side wall of the base body 100, a limiting groove 120 is disposed in the guide groove 110, and an extending direction of the limiting groove 120 is consistent with a length direction of the guide groove 110. The connecting portion 210 is located in the guide groove 110, a position of the connecting portion 210 corresponding to the position of the position-limiting groove 120 is provided with a position-limiting edge 213, and the position-limiting edge 213 is located in the position-limiting groove 120 and can slide along the position-limiting groove 120. The connection between the limiting edge 213 and the guide groove 110 can guide and limit the connecting part 210, thereby effectively improving the moving stability of the clamping jaw 200.

In the combined clamp of the above embodiment, the pad 300 and the seat 100 can be connected by a pin, and with reference to the direction in the drawing, the abutting surface 310 of the pad 300 faces upward and protrudes from the upper surface of the connecting portion 210 of the seat 100 and the clamping jaw 200, so as to abut against the bottom surface of the workpiece placed in the clamping space. In some embodiments, the spacer 300 is a cylinder, one end of the spacer 300 is connected to the base 100, and the other end face is a supporting surface 310 facing the clamping space. Of course, the pad 300 may have other shapes, such as a rectangular parallelepiped, a square, a trapezoidal block, etc., and the upper surface of the pad 300 is a plane for fitting the bottom surface of the workpiece.

In the above embodiment, the combined clamp includes four clamping jaws 200 uniformly distributed along the circumference, a pad 300 is disposed at each position between the clamping jaws 200, and the clamping and releasing driving of the clamping jaws 200 may adopt a driving mechanism of the clamping jaws 200 on a conventional machine tool, which is not described herein again.

Fig. 4 is a schematic structural view of a combined clamp according to another embodiment of the present invention, and fig. 5 is a schematic view of clamping a workpiece by using the embodiment shown in fig. 4. In some other embodiments of the modular fixture, a side surface of the clamping portion 220 of some of the clamping jaws 200 facing the clamping space is a flat surface, and a side surface of the clamping portion 220 of the rest of the clamping jaws 200 facing the clamping space is an arc 223, and the radii of the arc 223 are the same. The method is suitable for workpieces with the peripheral surfaces comprising cylindrical surfaces and planes. In the embodiment shown in the figures, the clamping portion 220 of one of the clamping jaws 200 comprises a clamping block 224, and a side of the clamping block 224 facing the clamping space is a planar clamping surface 225, which is used for fitting a side of a workpiece with a planar outer surface, so that the workpiece is clamped, and the problem that the workpiece is deformed due to clamping is effectively reduced. Fig. 5 is a schematic view of the combined clamp of fig. 4 for clamping a workpiece having a cylindrical surface and a flat surface on an outer peripheral surface, and the size of the clamping surface 225 of the clamping block 224 can be set according to the size of the outer surface of the workpiece, which is a flat surface, so that the clamping surface 225 can be attached to the flat surface of the workpiece in an area as large as possible. The structure of the rest of this embodiment is the same as that of the above embodiment, and will not be described herein.

The embodiment of the utility model provides a machine tool (not shown, wherein modular fixture's relevant structure can refer to fig. 1 to 5), modular fixture including frame, processingequipment and above-mentioned embodiment, modular fixture connects in the frame for the work piece that the centre gripping was treated and is processed, processingequipment is used for processing the work piece. By combining the embodiment, the machine tool adopting the combined clamp can effectively avoid the deformation of the workpiece during machining, and effectively ensure the flatness of the machined end face of the workpiece, thereby meeting the machining requirements.

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. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. Modular fixture, its characterized in that includes:

a base body;

2. The modular fixture of claim 1 wherein said abutment surfaces are flush with each other.

3. The modular fixture of claim 2 wherein said jaws include a connecting portion and a clamping portion, said connecting portion being adapted to connect to said housing and being movable relative to said housing; the clamping part is detachably connected to the connecting part and used for clamping the workpiece arranged in the clamping space.

4. The combination clamp of claim 3, wherein the connecting portion has a positioning groove, the clamping portion has a positioning protrusion, and the positioning protrusion is embedded in the positioning groove.

5. A modular fixture as claimed in claim 3, characterised in that the clamping portion of the clamping jaw has a curved surface on a side facing the clamping space, the curved surfaces having the same radius.

6. A modular fixture as claimed in claim 3, wherein a side surface of the clamping portion of the clamping jaw facing the clamping space is a flat surface, and a side surface of the clamping portion of the remaining clamping jaw facing the clamping space is an arc surface, and the radii of the arc surfaces are the same.

7. The combination clamp of claim 3, wherein a guide groove is formed on a surface of the base body facing the clamping space, the guide groove penetrates through an outer side wall of the base body, a limiting groove is formed in the guide groove, and an extending direction of the limiting groove is consistent with a length direction of the guide groove; the connecting part is located in the guide groove, a limiting edge is arranged on the connecting part corresponding to the limiting groove, and the limiting edge is located in the limiting groove and can slide along the limiting groove.

8. The modular fixture of claim 1 wherein the spacer and the base are connected by a pin.

9. The modular fixture of claim 1, wherein the spacer is a cylinder or a rectangular parallelepiped, one end of the cylinder is connected to the base, and the other end of the cylinder is the abutting surface facing the clamping space.

10. Machine tool, characterized in that it comprises a frame, a machining device and a modular fixture according to any one of claims 1 to 9, said modular fixture being connected to said frame, said modular fixture being intended to hold a workpiece to be machined, said machining device being intended to machine said workpiece.