CN217619120U - Clamp - Google Patents

Abstract

The utility model discloses a clamp, which comprises a base, a transmission rod, a first positioning piece and a clamping assembly, wherein the transmission rod is provided with a left-handed thread and a right-handed thread, and a positioning groove which is circumferentially arranged along the transmission rod is arranged between the left-handed thread and the right-handed thread; the first positioning piece is connected with the base, the first positioning piece is provided with a first positioning boss matched with the positioning groove, and the transmission rod is rotatably connected with the first positioning piece; the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece is connected with the transmission rod through left-handed threads, and the second clamping piece is connected with the transmission rod through right-handed threads. The transmission rod is rotated, the first clamping piece and the second clamping piece slide towards the direction close to the workpiece or far away from the workpiece, so that the workpiece to be machined is clamped or loosened, the center of the workpiece is positioned in the clamping process, and machining efficiency is greatly improved.

Description

Clamp

Technical Field

The utility model relates to a machining technical field, in particular to anchor clamps.

Background

In the field of machining, a vise is a common fixture, consisting of a base and two jaws. When the existing vice is used, one side of a workpiece is used as a processing reference, wherein one jaw is fixed on a base, and the other jaw freely slides on the base. When a workpiece is clamped, the movable jaw moves towards the fixed jaw, so that one surface of the workpiece is tightly attached to the fixed jaw. When the machining process needs to use the center of the workpiece as a machining reference and clamp workpieces with different widths, the center of the workpiece needs to be aligned again in a time-consuming manner, labor is consumed, and production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the utility model provides a clamp, the technical scheme who adopts as follows.

The clamp provided by the utility model comprises a base, a transmission rod, a first positioning piece and a clamping component, wherein the transmission rod is provided with a left-handed thread and a right-handed thread, and a positioning groove circumferentially arranged along the transmission rod is arranged between the left-handed thread and the right-handed thread; the first positioning piece is connected with the base, the first positioning piece is provided with a first positioning boss matched with the positioning groove, and the transmission rod is rotatably connected with the first positioning piece; the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece is connected with the transmission rod through the left-handed thread, the second clamping piece is connected with the transmission rod through the right-handed thread and rotates the transmission rod, and the first clamping piece and the second clamping piece move in opposite directions or move back to back.

The utility model discloses an in some embodiments, the both sides of constant head tank are provided with first limit structure and second limit structure respectively, first limit structure restriction the stroke of first holder, second limit structure restriction the stroke of second holder.

In some embodiments of the utility model, anchor clamps include the second setting element, the second setting element with first setting element is connected to form and is used for the assistance the circular cavity of transfer line axial positioning.

In some embodiments of the present invention, the second positioning member is detachably connected to the first positioning member.

In some embodiments of the present invention, the second positioning member is connected to the first positioning member through a threaded connection member.

In some embodiments of the utility model, the sliding tray has been seted up to the base, first holder with the second holder all be provided with sliding tray complex slide rail structure.

In some embodiments of the present invention, at least one end of the drive link is provided with a starting structure.

In some embodiments of the present invention, the starting structure is at least one of an outer hexagonal boss and an inner hexagonal groove.

In some embodiments of the utility model, the chip groove has been seted up to the base.

The utility model discloses an in some embodiments, the both ends of first holder are provided with first clamping face and second clamping face respectively, the both ends of second holder are provided with first clamping face and second clamping face respectively, first clamping face is higher than the setting of second clamping face.

The embodiment of the utility model discloses a following beneficial effect has at least: first holder and second holder are connected with the transfer line through revolving to opposite screw respectively, rotate the transfer line, and first holder and second holder slide to the direction of being close to the work piece or keeping away from the work piece simultaneously, and then realize treating the clamp of processing work piece or relax, are fixing a position work piece center at the in-process of pressing from both sides simultaneously, promote machining efficiency by a wide margin.

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.

FIG. 1 is an exploded view of a clamp;

FIG. 2 is a schematic structural view of the clamping apparatus provided in FIG. 1, wherein the first clamping surface clamps a workpiece;

FIG. 3 is a cross-sectional view of the fixture provided in FIG. 2;

FIG. 4 is a cross-sectional view of the fixture provided in FIG. 2;

FIG. 5 is a schematic view of the base of the fixture of FIG. 1;

FIG. 6 is a schematic view of a driving rod in the clamp of FIG. 1;

fig. 7 is a schematic structural view of the clamping apparatus provided in fig. 1, wherein the second clamping surface clamps a workpiece.

Reference numerals are as follows: 100. a base; 101. a sliding groove; 102. a chip groove; 103. a diversion trench; 104. mounting grooves; 110. a first positioning member; 111. a first positioning boss; 120. a second positioning member; 200. a transmission rod; 201. left-handed threads; 202. right-hand threads; 210. positioning a groove; 221. a first limit structure; 222. a second limiting structure; 230. a starting structure; 301. a first clamping surface; 302. a second clamping surface; 310. a first clamping member; 320. a second clamping member; 330. a slide rail structure; 400. a blind rivet base.

Detailed Description

Embodiments of the invention, examples of which are illustrated in the accompanying drawings, are described in detail below with reference to fig. 1 to 7, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions 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 if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings, it is only for convenience of description and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the field of machining, a vise is a common fixture, consisting of a base and two jaws. When an existing vice is used, one edge of a workpiece is used as a processing reference, one jaw of the existing vice is fixed on a base, and the other jaw of the existing vice slides freely on the base. When a workpiece is clamped, the movable jaw moves towards the fixed jaw, so that one surface of the workpiece is tightly attached to the fixed jaw. When the machining process needs to use the center of the workpiece as a machining reference to clamp workpieces with different widths, the center of the workpiece needs to be aligned again in a time-consuming manner, labor is consumed, and production efficiency is low.

The utility model relates to a clamp, which comprises a base, a transmission rod 200 and a clamping component, wherein the transmission rod 200 is rotationally fixed on the base, and the transmission rod 200 is provided with a left-handed thread 201 and a right-handed thread 202; the clamping assembly comprises a first clamping piece 310 and a second clamping piece 320, the first clamping piece 310 is connected with the transmission rod 200 through a left-handed thread 201, the second clamping piece 320 is connected with the transmission rod 200 through a right-handed thread 202, the transmission rod 200 is rotated, and the first clamping piece 310 and the second clamping piece 320 move towards or away from each other. The first clamping piece 310 and the second clamping piece 320 are connected with the transmission rod 200 through threads with opposite rotating directions respectively, the transmission rod 200 is rotated, the first clamping piece 310 and the second clamping piece 320 slide towards the direction close to a workpiece or away from the workpiece at the same time, the workpiece to be machined is clamped or loosened, the center of the workpiece is positioned in the clamping process, and machining efficiency is greatly improved.

It can be understood that the left-handed thread 201 and the right-handed thread 202 are consistent in other parameters except the direction of rotation, so as to ensure the synchronism of the movement of the first clamping member 310 and the second clamping member 320, and further ensure that the fixture takes the center of the workpiece as a machining reference, and ensure the machining precision of the workpiece. In this embodiment, the base is seted up and is slided the chamber, and the clamping component is in the tight or relax of the clamp of slide intracavity reciprocating motion in order to realize the work piece.

With reference to the drawings, the fixture comprises a first positioning element 110, a positioning groove 210 is formed between a left-handed thread 201 and a right-handed thread 202, the positioning groove 210 is arranged along the circumferential direction of a transmission rod 200, and the first positioning element 110 is provided with a first positioning boss 111 matched with the positioning groove 210. As can be understood by referring to the drawings, the first positioning element 110 is disposed on the base 100, and the first positioning element 110 is used for positioning the transmission rod 200 along the axial direction of the transmission rod 200, so as to avoid a machining error caused by the axial movement of the transmission rod 200 during the use of the clamp. Specifically, with reference to the drawings, the first positioning boss 111 of the first positioning element 110 is configured to be semicircular to fit the positioning groove 210 arranged in the circumferential direction, so as to further clamp the transmission rod 200, prevent the transmission rod 200 from being displaced in the axial direction, and improve the machining accuracy.

In this embodiment, the first positioning element 110 is fixed to the base 100 by a pin. It can be understood that the first positioning element 110 and the base 100 can be fixed by other detachable connection methods such as threaded connection, so as to facilitate the disassembly and assembly and replacement of parts in the later period and avoid the reduction of the machining precision caused by the loss of the parts.

Further, a first limiting structure 221 and a second limiting structure 222 are respectively disposed on two sides of the positioning groove 210, the first limiting structure 221 limits the stroke of the first clamping member 310, and the second limiting structure 222 limits the stroke of the second clamping member 320. With reference to the drawings, the first limiting structure 221 and the second limiting structure 222 are both provided in the form of limiting bosses, the first limiting structure 221 and the second limiting structure 222 are symmetrically distributed on two sides of the positioning groove 210, and the first limiting structure 221 and the second limiting structure 222 have the same width, so as to ensure a reference center when a workpiece is machined and ensure machining accuracy.

Further, the clamp includes a second positioning member 120, and the second positioning member 120 is connected with the first positioning member 110 to form a circular cavity for assisting in axially positioning the driving rod 200. Specifically, in this embodiment, the second positioning element 120 is provided with a second positioning boss matched with the positioning groove 210, the second positioning boss is configured to be semicircular, and the second positioning boss and the first positioning boss 111 can be spliced to form an annular structure to fit the positioning groove 210, so as to further avoid axial movement of the transmission rod 200, and ensure the processing precision.

It can be understood that the first positioning element 110 and the second positioning element 120 are connected to form a through hole for accommodating the transmission rod 200, so that the transmission rod 200 can be prevented from moving radially while the transmission rod 200 is assisted in positioning axially, and the processing stability and the processing precision of the clamp can be ensured.

Further, the second positioning member 120 is detachably coupled to the first positioning member 110. It can be understood that the detachable connection mode is adopted between the second positioning member 120 and the first positioning member 110, so that the replacement of the parts at the later stage is facilitated, and the reduction of the processing precision caused by the wear and aging of the parts and the like is prevented.

In this embodiment, the second positioning element 120 is connected to the first positioning element 110 by a screw. Specifically, with reference to the drawings, the threaded connector sequentially penetrates through the base 100 and the first positioning member 110, and is connected to the second positioning member 120. It can be understood that the degree of tightness of the radial fixing of the transmission rod 200 by the second positioning member 120 can be adjusted by rotating the threaded connection member, so as to avoid affecting the smooth rotation of the transmission rod 200.

It is understood that the positioning between the first positioning member 110 and the transmission rod 200 is not exclusive. In other embodiments, the transmission rod 200 is provided with a positioning boss arranged along the circumferential direction of the transmission rod 200, the first positioning element 110 is provided with a positioning groove in sliding fit with the positioning boss, and the positioning boss rotates in the positioning groove to realize connection between the first positioning element 110 and the transmission rod 200, so as to axially fix the transmission rod 200. When the positioning groove is formed in the first positioning element 110, the position limitation of the clamping assembly can be realized by two side walls of the first positioning element 110, and certainly, can also be realized by two side walls of the second positioning element 120.

Further, the base 100 is provided with a sliding groove 101, and the first clamping member 310 and the second clamping member 320 are both provided with a sliding rail structure 330 engaged with the sliding groove 101. With reference to the drawings, the two side walls of the inner side of the base 100 are respectively provided with a sliding groove 101, the first clamping member 310 is provided with two sliding rail structures 330 corresponding to the sliding groove 101, the second clamping member 320 is provided with two sliding rail structures 330 corresponding to the sliding groove 101, the sliding rail structures 330 slide in the sliding groove 101 to limit the moving directions of the first clamping member 310 and the second clamping member 320, so that a processing error caused by the vertical movement of the first clamping member 310 and the second clamping member 320 is avoided, and the processing precision is ensured. It is understood that in other embodiments, the base is provided with a sliding rail structure, and the first clamping member 310 and the second clamping member 320 are respectively provided with a sliding groove matched with the sliding rail structure, so as to achieve the same guiding and limiting effect.

In this embodiment, the edges of the sliding rail structure 330 and the sliding groove 101 are provided with circular arc chamfers for smooth transition, so as to prevent the first clamping member 310 and the second clamping member 320 from being stuck in the moving process, thereby ensuring the normal use of the clamp.

Further, at least one end of the transmission rod 200 is provided with a start structure. In this embodiment, both the first and second ends of the transmission rod 200 are provided with a start structure 230. It will be appreciated that a start structure 230 is provided at each end of the drive link 200 to facilitate driving rotation of the drive link 200. Specifically, the actuating structure 230 is provided as at least one of an outer hexagonal boss and an inner hexagonal groove. In this embodiment, the first end of the transmission rod 200 is provided with an outer hexagonal boss and an inner hexagonal groove, and the second end of the transmission rod 200 is provided with an outer hexagonal boss and an inner hexagonal groove, so that the transmission rod 200 can be driven to rotate by an inner hexagonal wrench or an outer hexagonal wrench to clamp or loosen a workpiece. It is understood that in other embodiments, the actuating structure 230 can be separately provided as an outer octagonal boss or other form to drive the rotation of the drive link 200.

Furthermore, the base 100 is provided with a chip discharge groove 102, and the chip discharge groove 102 is used for timely discharging scraps and cutting fluid generated in the machining process, so that the phenomenon that the scraps and the cutting fluid are accumulated in the sliding cavity to influence the normal use of the clamp is avoided, and the machining precision is ensured. Specifically, in the present embodiment, two chip discharge grooves 102 are provided, two chip discharge grooves 102 are respectively provided on two opposite sides of the base 100, and the chip discharge grooves 102 are inclined downward to facilitate outflow of the chips and the cutting fluid.

Furthermore, the base 100 is provided with a diversion trench 103, with reference to the attached drawings, the diversion trench 103 is arranged in the middle of a plane where the base 100 contacts with the workpiece, and the diversion trench 103 is obliquely arranged towards the direction of the sliding cavity to guide the scraps and the cutting fluid generated in the machining process to flow into the sliding cavity and be discharged through the chip discharge groove 102, so that the machining environment is prevented from being polluted by the scraps or the cutting fluid in the machining process, and the normal use of the fixture is ensured.

With reference to the accompanying drawings, in the embodiment, the bottom surface of the sliding cavity is obliquely arranged to further guide the discharge of scraps and cutting fluid generated in the machining process of the workpiece, so that the influence of the blockage in the sliding cavity on the machining of the workpiece is avoided, and the smooth machining process is ensured.

Further, a first clamping surface 301 and a second clamping surface 302 are respectively disposed at two ends of the first clamping member 310, and a first clamping surface 301 and a second clamping surface 302 are respectively disposed at two ends of the second clamping member 320. With reference to the drawings, the first clamping surface 301 and the second clamping surface 302 have different heights and are used for clamping workpieces to be processed with different specifications. In this embodiment, the height of the first clamping surface 301 is higher than that of the second clamping surface 302, and it can be understood that the clamp should ensure that the machined surface of the workpiece is higher than the first clamping member 310 and the second clamping member 320 when in use.

It will be appreciated that the first clamping surface 301 and the second clamping surface 302 may be provided with different clamping configurations according to different use requirements. In this embodiment, the first clamping surface 301 is provided with a tooth structure for clamping a workpiece, and the second clamping surface 302 is also provided with a tooth structure for clamping a workpiece. In other embodiments, the clamping structure may be configured as a V-groove or other structure according to the shape of the workpiece, and of course, the clamping structure may be configured as a smooth plane to clamp the workpiece.

Referring to the drawings, in the present embodiment, the base 100 is connected to the blind rivet base 400 and is externally connected to a pneumatic chuck for quick fixing. In some embodiments, the side wall of the base 100 is provided with a mounting groove 104 for connecting a pressing plate, and the base 100 can also be used by fixing the pressing plate. Referring to the drawings, in the present embodiment, two mounting grooves 104 are respectively formed in two side walls of the base 100, the mounting grooves 104 are used for connecting a pressing plate, and the two mounting grooves 104 are symmetrically arranged on two sides of the chip groove 102.

In the description herein, references to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, mean 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 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.

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.

In the description of the present invention, if the patent names "and" appear, "they refer to the relationship of" and "rather than" or ". For example, the patent name "a A, B" indicates that the claimed invention is: the technical scheme with the subject name of A and the technical scheme with the subject name of B.

Claims (10)

1. A clamp, comprising:

a base (100);

the transmission rod (200) is provided with a left-handed thread (201) and a right-handed thread (202), and a positioning groove (210) arranged along the circumferential direction of the transmission rod is formed between the left-handed thread (201) and the right-handed thread (202);

the first positioning piece (110), the first positioning piece (110) is connected with the base (100), the first positioning piece (110) is provided with a first positioning boss (111) matched with the positioning groove, and the transmission rod (200) is rotatably connected with the first positioning piece (110);

the clamping assembly comprises a first clamping piece (310) and a second clamping piece (320), the first clamping piece (310) is connected with the transmission rod (200) through the left-handed thread (201), the second clamping piece (320) is connected with the transmission rod (200) through the right-handed thread (202), the transmission rod (200) is rotated, and the first clamping piece (310) and the second clamping piece (320) move towards or away from each other.

2. The clamp of claim 1, wherein: two sides of the positioning groove (210) are respectively provided with a first limiting structure (221) and a second limiting structure (222), the first limiting structure (221) limits the stroke of the first clamping piece (310), and the second limiting structure (222) limits the stroke of the second clamping piece (320).

3. The clamp of claim 1, wherein: the fixture comprises a second positioning piece (120), wherein the second positioning piece (120) is connected with the first positioning piece (110) to form a circular cavity for assisting the axial positioning of the transmission rod (200).

4. The clamp of claim 3, wherein: the second positioning element (120) is detachably connected with the first positioning element (110).

5. The clamp of claim 4, wherein: the second positioning piece (120) is connected with the first positioning piece (110) through a threaded connection piece.

6. The clamp of claim 1, wherein: sliding tray (101) have been seted up to base (100), first holder (310) with second holder (320) all are provided with sliding rail structure (330) of sliding tray (101) complex.

7. The clamp of claim 1, wherein: at least one end of the transmission rod (200) is provided with a starting structure (230).

8. The clamp of claim 7, wherein: the starting structure (230) is at least one of an outer hexagonal boss and an inner hexagonal groove.

9. The clamp of claim 1, wherein: the base (100) is provided with a chip groove (102).

10. The clamp of any one of claims 1 to 9, wherein: the two ends of the first clamping piece (310) are respectively provided with a first clamping surface (301) and a second clamping surface (302), the two ends of the second clamping piece (320) are respectively provided with a first clamping surface (301) and a second clamping surface (302), and the first clamping surface (301) is higher than the second clamping surface (302).

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