CN212527492U - Clamping device - Google Patents

Abstract

The utility model provides a clamping device, including propping the anchor clamps that rise and the expansion body, prop the clamping part that the anchor clamps that rise include the interior pore wall that is used for the centre gripping part, be equipped with the toper portion on the expansion body, the toper portion with prop the inner wall contact of the anchor clamps that rise, prop the anchor clamps that rise with the movable rod is connected to arbitrary item in the expansion body, the movable rod can remove along axial direction, through the movable rod so that prop the anchor clamps that rise with expansion body relative movement so that the clamping part expands outward.

Description

Clamping device

Technical Field

The utility model relates to a frock clamp technical field especially relates to a clamping device.

Background

In some products with hole sites, such as electric hair dryer blades, motor heat dissipation blades or wheels, etc., the motor shaft is tightly matched with the center hole, so dynamic balance detection is needed, or clamping is needed through the hole sites in the processing process, and a clamping device special for hole site clamping is needed.

The existing clamping method is to press the product into the clamp by hand according to one end of the product aperture finish grinding fixture. However, the hole diameters of most products have allowable tolerance, so that the tool has a large fit error, and on one hand, the clamping is easy to be unstable due to the fit error; on the other hand, the dynamic balance detection data may be inaccurate or have large errors, so that the dynamic balance efficiency and effect are affected. Therefore, a clamping device for hole site clamping capable of improving clamping stability is required.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamping device, through propping the interior pore wall that rises anchor clamps and dilatation body relative motion in order to expand the centre gripping part outward, fixed mode is simple swift, and it is better to press from both sides tight stability.

The utility model provides a clamping device, including propping the anchor clamps that rise and the expansion body, prop the clamping part that the anchor clamps that rise include the interior pore wall that is used for the centre gripping part, be equipped with the toper portion on the expansion body, the toper portion with prop the inner wall contact of the anchor clamps that rise, prop the anchor clamps that rise with the movable rod is connected to arbitrary item in the expansion body, the movable rod can remove along axial direction, through the movable rod so that prop the anchor clamps that rise with expansion body relative movement so that the clamping part expands outward.

Furthermore, the expansion fixture comprises at least two clamping parts and stress parts connected with the clamping parts, the outer side surfaces of all the clamping parts are arc-shaped surfaces, the inner walls of the stress parts are in contact with the conical parts, and the stress parts and the conical parts move relatively to drive the corresponding clamping parts.

Further, the outer diameter of the clamping part is smaller than that of the stress part.

Furthermore, the expansion clamp comprises a mounting seat, the stress part extends out of the mounting seat, and the movable rod is connected with the expansion clamp through the mounting seat.

Further, the expanding clamp is a tubular body, the inner wall of the tubular body is in contact with the conical part, and the outer diameter of the tubular body is changed through relative movement of the tubular body and the conical part.

Furthermore, the movable rod is connected with the expanding clamp, the movable rod penetrates through the center of the expansion body, the expansion body is provided with circumferentially distributed clearance grooves, and the movable rod is fixedly provided with installation positions penetrating through the clearance grooves and connected with the expanding clamp.

Furthermore, the clamping part is also sleeved with a limiting ring, and the elastic deformation of the clamping part is limited by the limiting ring.

Furthermore, the clamping device also comprises an elastic piece, and the elastic piece is used for pre-tightening the movable rod to enable the clamping part to expand outwards.

Furthermore, the elastic part is a spring, a limiting block is arranged at one end of the movable rod, and one end of the spring is in contact with the limiting block.

Further, still include the dust cover, the dust cover is used for preventing dust and little piece from falling into inside the clamping device.

The utility model discloses a setting props anchor clamps and the volume expansion body that rises, thereby props the interior pore wall that rises anchor clamps centre gripping part through propping the relative motion between the anchor clamps that rise and the volume expansion body in order to expand outward, fixed mode is simple swift, and clamping stability is better.

Drawings

Fig. 1 is a schematic view of an overall structure of a clamping device according to an embodiment of the present invention.

FIG. 2 is an angular schematic view of the embodiment of FIG. 1.

Fig. 3 is a top view of the embodiment of fig. 1.

Fig. 4 is a cross-sectional view taken about section line a-a in fig. 3.

Fig. 5 is an exploded view of a portion of the embodiment of fig. 1.

Fig. 6 is an exploded view of a portion of the embodiment of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-6, fig. 1 is a schematic view of an overall structure of a clamping device 100 according to an embodiment of the present invention; FIG. 2 is an angular schematic view of the clamping device 100; fig. 3 is a top view of the clamping device 100; FIG. 4 is a cross-sectional view taken about section line A-A of FIG. 3; FIG. 5 is an exploded view of a portion of the components of the clamping device 100; fig. 6 is an exploded view of some of the components of the clamping device 100.

The utility model provides a clamping device 100, including propping the anchor clamps 10 and the expansion body 20 that rise, prop the clamping part 11 that the anchor clamps 10 that rise includes the inner hole wall that is used for the centre gripping part, be equipped with toper portion 21 on the expansion body 20, toper portion 21 with prop the inner wall contact of the anchor clamps 10 that rise, prop anchor clamps 10 that rise with arbitrary item in the expansion body 20 connects the movable rod 30, the movable rod 30 can remove along axial direction, through the movable rod 30 so that prop the anchor clamps 10 that rise with expansion body 20 relative movement is so that clamping part 11 expands outward.

Preferably, the clamping device 100 is further provided with a dust cover 104, and the dust cover 104 is used for preventing dust and small debris from falling into the clamping device 100.

In this embodiment, the clamping device 100 is a dynamic balance clamping device 100, and the dynamic balance detection is a technology for detecting some products with a central hole tightly matched with a motor shaft. Specifically, the clamping device 100 further includes a mounting box and a transmission mechanism, the movable rod 30 is connected to the expanding clamp 10, wherein the movable rod 30 and the accommodating body 20 are at least partially disposed in the mounting box 40 and are sleeved with a bearing element 50, and the movable rod 30 is connected to the transmission mechanism, and the transmission mechanism 60 drives the movable rod 30 to rotate so that the expanding clamp 10 and the part clamped by the expanding clamp 10 rotate together; specifically, the transmission mechanism 60 is a pulley.

Referring to fig. 5 to 6, the expanding fixture 10 includes at least two clamping portions 11 and a force-receiving portion 12 connected to the clamping portions 11, outer side surfaces of all the clamping portions 11 are arc-shaped surfaces, an inner wall of the force-receiving portion 12 contacts the tapered portion 21, and the force-receiving portion 12 and the tapered portion 21 move relative to each other to drive the corresponding clamping portions 11. In this embodiment, the outer diameter of the clamping portion 11 is smaller than that of the stressed portion 12, so as to clamp the inner hole wall with a smaller hole diameter; in other embodiments, the outer diameter of the clamping portion 11 may be larger than the outer diameter of the force-receiving portion 12, so as to clamp the inner hole wall with a larger hole diameter.

Preferably, the movable rod 30 is connected to the expanding fixture 10, the movable rod 30 is inserted into the center of the expansion body 20, the expansion body 20 is provided with clearance grooves 22 distributed circumferentially, the movable rod 30 is fixed with a mounting position 31 penetrating through the clearance grooves 22, and the mounting position 31 is connected to the expanding fixture 10.

Specifically, the expanding fixture 10 further includes a mounting seat 13, the force-receiving portion 12 extends from the mounting seat 13, and the movable rod 30 is connected to the expanding fixture 10 through the mounting seat 13.

Preferably, the clamping device 100 further includes an elastic member 101, the elastic member 101 is used for pre-tightening the movable rod 30 to expand the clamping portion 11, when the movable rod 30 moves to disengage the expanding fixture 10 from the expanding body 20 and align the inner hole wall of the part with the clamping portion 11, the elastic member drives the movable rod 30 to reset so that the clamping portion 11 expands and clamps the inner hole wall.

Specifically, the elastic member 101 is a spring, one end of the movable rod 30 is provided with a limit block 102, and one end of the spring is in contact with the limit block 102.

Preferably, the clamping portion 11 is further sleeved with a limiting ring 103, the elastic deformation of the clamping portion 11 is limited by the limiting ring 103, and when the clamping device 100 is in an idle state, the elastic deformation is limited by the limiting ring 103 so as to avoid the unrecoverable deformation; when the clamping device 100 is in operation, the stop collar 103 is removed.

In other embodiments, the expanding fixture 10 is a tubular body, an inner wall of the tubular body contacts the tapered portion 21, and an outer diameter of the tubular body is changed by relative movement between the tubular body and the tapered portion 21.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims (10)

1. The clamping device is characterized by comprising a supporting and expanding clamp and an expansion body, wherein the supporting and expanding clamp comprises a clamping part used for clamping an inner hole wall of a part, a conical part is arranged on the expansion body and is in contact with the inner wall of the supporting and expanding clamp, any one of the supporting and expanding clamp and the expansion body is connected with a movable rod, the movable rod can move along the axial direction, and the supporting and expanding clamp and the expansion body move relatively through the movable rod so as to enable the clamping part to expand.

2. The clamping device as claimed in claim 1, wherein the expanding clamp includes at least two clamping portions and a force-receiving portion connected to the clamping portions, outer side surfaces of all the clamping portions are arc-shaped surfaces, inner walls of the force-receiving portion contact the tapered portion, and the force-receiving portion and the tapered portion move relative to each other to drive the corresponding clamping portions.

3. The clamping device of claim 2, wherein the clamping portion has an outer diameter less than the force receiving portion.

4. The clamping device as claimed in claim 2, wherein the expanding clamp includes a mounting base, and the force-receiving portion extends from the mounting base, and is connected to the expanding clamp through the mounting base.

5. The clamping device of claim 1, wherein the tensioning clamp is a tubular body, an inner wall of the tubular body is in contact with the tapered portion, and an outer diameter of the tubular body is changed by relative movement of the tubular body and the tapered portion.

6. The clamping device as claimed in claim 1, wherein the movable rod is connected to the expanding clamp, the movable rod is inserted into the center of the expansion body, the expansion body is provided with circumferentially distributed clearance grooves, the movable rod is fixed with mounting positions passing through the clearance grooves, and the mounting positions are connected to the expanding clamp.

7. The clamping device as claimed in claim 1, wherein the clamping portion is further sleeved with a limiting ring, and the elastic deformation of the clamping portion is limited by the limiting ring.

8. The clamping device of claim 1, further comprising a spring for biasing said movable rod to expand said clamping portion.

9. The clamping device as claimed in claim 8, wherein the elastic member is a spring, and a stopper is provided at one end of the movable rod, and one end of the spring is in contact with the stopper.

10. The clamp of claim 1, further comprising a dust shield for preventing dust and small debris from falling into the interior of the clamp.

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