CN220516607U

CN220516607U - Positioning fixture capable of stabilizing clamping

Info

Publication number: CN220516607U
Application number: CN202322152267.XU
Authority: CN
Inventors: 包凯
Original assignee: Shenzhen Tianfucheng Technology Co ltd
Current assignee: Shenzhen Tianfucheng Technology Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-02-23
Anticipated expiration: 2033-08-11

Abstract

The utility model discloses a positioning clamp capable of stably clamping, which comprises a bottom plate, wherein the lower end surface of the bottom plate is connected with at least one pair of rotating wheels in a shaft way, the lower end surface of the bottom plate is provided with a fixed shaft and a fixed block which are oppositely arranged, a rotatable clamping wheel is arranged on the fixed shaft, the lower end surface of the bottom plate is vertically provided with a clamping piece, the lower end surface of the bottom plate is provided with a threaded hole, and the pair of rotating wheels, the clamping piece and the fixed block are clamped on two side surfaces of a linear guide rail. The pair of rotating wheels are clamped on the linear guide rail to fix the axial degree of freedom of the bottom plate and prevent the bottom plate from shifting and skewing, so that after the clamping wheels are rotated, the clamping sheets and the fixing blocks are firmly clamped on two side surfaces of the linear guide rail, the pair of rotating wheels provide positioning, and the clamping sheets and the fixing blocks provide clamping force, so that the stability of overall clamping is effectively improved; meanwhile, the friction force of the pair of rotating wheels can be small when the two side faces of the linear guide rail slide, so that the pair of rotating wheels are not easy to be blocked during integral displacement, and the pair of rotating wheels move smoothly, and therefore the actual use requirements of users are met greatly.

Description

Positioning fixture capable of stabilizing clamping

Technical Field

The utility model relates to the technical field of clamps, in particular to a positioning clamp capable of stably clamping.

Background

As is well known, a fixture is a device for fixing a work object in a machine manufacturing process so as to occupy a correct position for performing a construction or inspection, and is also called a fixture in a broad sense, a device for rapidly, conveniently and safely mounting a work piece at any process in the process.

The linear guide is used for high-precision or high-speed linear reciprocating motion occasion, can bear certain torque, can realize high-precision linear motion under the condition of high load, generally comprises a guide rail and a slide block capable of linearly sliding on the guide rail, is convenient to install, high in precision and low in price, and therefore is widely applied to the field of mechanical equipment or jigs, a positioning clamp is generally used on the linear guide, a fixed plate is arranged on the slide block, and the positioning clamp is arranged on the fixed plate of the slide block and used for positioning the positions of the slide block and the fixed plate, for example: the utility model of China patent CN201720271931.4 discloses a guide rail clamp seat jig, which has the main structure that: the one end of anchor clamps seat is equipped with locking screw, be equipped with the latch segment between latch screw and the guide rail, the both sides of latch segment are equipped with latch segment copper pad and latch screw lantern ring respectively, be equipped with the guide rail slider on the guide rail, when above-mentioned anchor clamps press from both sides tightly, anchor clamps seat copper pad and latch segment centre gripping in the both sides of linear guide rail at the both ends of anchor clamps seat, above-mentioned anchor clamps have the centre gripping function only, can not carry out stable location, so anchor clamps whole crooked easily, can not stable location, and the anchor clamps seat is when moving on linear guide rail, the side of anchor clamps seat copper pad and latch segment centre gripping is the friction of face with linear guide rail's both sides face, frictional force is great, the anchor clamps seat is easy to block when moving on linear guide rail, also more laborious, unsmooth during the removal, when the user uses, therefore above-mentioned defect is very obvious, we propose a positioning fixture of stable centre gripping for solving above-mentioned problem for this reason.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, the present utility model aims to provide a positioning fixture with stable clamping.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a positioning fixture of stable centre gripping, includes the bottom plate, the lower terminal surface shaft of bottom plate has at least a pair of rotor, the lower terminal surface of bottom plate is provided with fixed axle and the fixed block of relative arrangement, install rotatable pinch roller on the fixed axle, the axle center of pinch roller and the axle center of fixed axle do not coincide, install the handle on the pinch roller, the clamp piece is installed perpendicularly to the lower terminal surface of bottom plate, the lower terminal surface of bottom plate is provided with the screw hole, a pair of width between rotor and the width between clamp piece and the fixed block all with the width adaptation of outside linear guide, wherein, the movable end horizontal displacement of clamp piece can be promoted when the pinch roller is rotatory to the side of extrusion outside linear guide.

Preferably, the rotating wheel is a bearing.

Preferably, a positioning shaft is arranged on the bottom plate, a step ring is arranged at the root of the positioning shaft, an inner ring of the bearing is inserted on the positioning shaft, and the bottom of the inner ring of the bearing is placed on the step ring.

Preferably, the movable end of the clamping piece is provided with an arc-shaped part, and the arc-shaped part is attached to the clamping wheel.

Preferably, the rotating wheels are two pairs, and the axes of the rotating wheels are aligned with each other.

Preferably, the clamping piece and the fixing block are made of brass or red copper materials.

Preferably, the side surface of the fixing block is provided with a rubber layer.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, because the scheme is adopted, the space between the pair of rotating wheels and the space between the clamping piece and the fixed block are clamped on the two side surfaces of the linear guide rail, the pair of rotating wheels fix the axial freedom degree of the bottom plate and prevent the bottom plate from shifting and skewing on the linear guide rail, after the clamping wheel is rotated, the clamping piece and the fixed block are firmly clamped on the two side surfaces of the linear guide rail, and then the pair of rotating wheels provide positioning, the clamping piece and the fixed block provide clamping force, and displacement and loosening during clamping are effectively prevented, so the stability of integral clamping is effectively increased; simultaneously, when not holding fixedly, the clamping piece loosens, and a pair of rotation wheels can be in linear guide's both sides face direction, slip, and frictional force during the slip is less, and then is difficult for the card to die when whole displacement, makes things convenient for whole smooth and easy removal, consequently satisfies user in-service use demand greatly, its simple structure, convenient operation has very strong practicality.

Drawings

Fig. 1 is an isometric view of an embodiment of the utility model.

Fig. 2 is a schematic view of a threaded hole according to an embodiment of the present utility model.

Fig. 3 is an installation schematic of an embodiment of the present utility model.

Fig. 4 is a schematic view of the structure of the clamp according to the embodiment of the present utility model.

FIG. 5 is a schematic view of a positioning shaft according to an embodiment of the present utility model.

In the figure:

1. a bottom plate; 2. a rotating wheel; 3. a fixed shaft; 4. a fixed block; 5. a pinch roller; 6. a handle; 7. a clamping piece; 8. a threaded hole; 9. a linear guide rail; 10. a step ring; 11. a bearing; 12. an arc-shaped portion; 13. a rubber layer; 14. a slide block; 15. a fixing plate; 16. and positioning the shaft.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper end", "lower end", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 5, the positioning fixture for stable clamping provided in this embodiment includes a base plate 1, at least one pair of rotating wheels 2 is pivotally connected to a lower end surface of the base plate 1, a fixed shaft 3 and a fixed block 4 which are oppositely arranged are provided on the lower end surface of the base plate 1, a rotatable clamping wheel 5 is mounted on the fixed shaft 3, an axle center of the clamping wheel 5 is not coincident with an axle center of the fixed shaft 3, a handle 6 is mounted on the clamping wheel 5, a clamping piece 7 is vertically mounted on the lower end surface of the base plate 1, a threaded hole 8 is provided on the lower end surface of the base plate 1, and a width between the pair of rotating wheels 2 and a width between the clamping piece 7 and the fixed block 4 are both adapted to a width of an external linear guide rail 9, wherein when the clamping wheel 5 rotates, a movable end of the clamping piece 7 can be pushed to horizontally displace and a side surface of the external linear guide rail 9 is extruded.

In actual use of the embodiment, the sliding block 14 is slidably mounted on the linear guide rail 9, the fixing plate 15 is mounted on the sliding block 14, firstly, the side surface between the pair of rotating wheels 2 and the side surface between the clamping piece 7 and the fixing block 4 are inserted and clamped on the two side surfaces of the linear guide rail 9, the pair of rotating wheels 2 fix the axial freedom degree of the bottom plate 1, then the bottom plate 1 is mounted on the fixing plate 15 of the sliding block 14 by using bolts, and the bottom plate 1 is prevented from shifting and skewing on the linear guide rail 9, so after the clamping wheel 5 is rotated, the clamping piece 7 and the fixing block 4 are firmly clamped on the two side surfaces of the linear guide rail 9, and then the pair of rotating wheels 2 provide positioning, and the clamping piece 7 and the fixing block 4 provide clamping force to effectively prevent shifting and loosening during clamping, so that the stability of integral clamping is effectively increased; and, when not holding fixedly, the clamping piece 7 is loosened, and bottom plate 1 can be along with fixed plate 15 and slider 14 synchronous movement, simultaneously, a pair of rotation wheel 2 can be in linear guide 9's both sides face direction, and the frictional force during the slip is less, and then difficult card is dead when whole displacement, and convenient whole smooth and easy removal consequently satisfies user's in-service use demand greatly.

Further, the rotating wheel 2 of the present embodiment is a bearing 11. Bearing 11 is an important component of contemporary mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in the course of its movement and ensure its rotation accuracy, so the friction force of the rotating wheel 2 for the bearing 11 is small, the rotation accuracy is high, and the stable sliding of the bottom plate 1 is ensured.

Further, a positioning shaft 16 is provided on the base plate 1 of the present embodiment, a step ring 10 is provided at the root of the positioning shaft 16, an inner ring of the bearing 11 is inserted on the positioning shaft 16, and the bottom of the inner ring of the bearing 11 is placed on the step ring 10. The inner ring of the bearing 11 is not rotated when the positioning shaft 16 rotates, and the outer ring of the bearing 11 rotates, so that the structure prevents the outer ring of the bearing 11 from rubbing against the surface of the bottom plate 1, and the inner ring of the bearing 11 is stably installed, so that smooth rotation of the bearing 11 is ensured.

Further, the movable end of the clamping piece 7 of the embodiment is provided with an arc-shaped portion 12, and the arc-shaped portion 12 is attached to the clamping wheel 5. The arc-shaped part 12 can be fit with the peripheral side surface of the clamping wheel 5, so that the contact area is increased, the arc-shaped part 12 also has a guiding function when moving, and the clamping piece 7 is prevented from being impacted on the side surface of the linear slide rail when moving.

Further, the rotating wheels 2 of the present embodiment are two pairs, and their axes are aligned with each other. The two pairs of rotating wheels 2 can effectively increase the positioning precision of the rotating wheels 2, prevent the base plate 1 from being inclined and ensure the stable clamping of the clamp.

Further, the clamping piece 7 and the fixing block 4 of the present embodiment are made of brass or copper material. The brass or red copper material has the characteristic of low hardness and certain structural strength, can effectively prevent the clamping sheet 7 and the fixed block 4 from clamping the linear guide rail 9, prevent the linear guide rail 9 from being damaged, and prolong the service life of the device.

Further, the side face of the fixing block 4 of the present embodiment is provided with a rubber layer 13. The rubber layer 13 can increase the friction force during clamping of the fixed block 4, so that the stability of clamping is effectively improved, the anti-loosening effect is achieved, and the practical use of a user is facilitated.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. Positioning fixture of stable centre gripping, its characterized in that: the clamping device comprises a bottom plate, at least one pair of rotating wheels are axially connected to the lower end face of the bottom plate, a fixed shaft and a fixed block which are oppositely arranged are arranged on the lower end face of the bottom plate, a rotatable clamping wheel is installed on the fixed shaft, the axle center of the clamping wheel is not coincident with that of the fixed shaft, a handle is installed on the clamping wheel, a clamping piece is vertically installed on the lower end face of the bottom plate, threaded holes are formed in the lower end face of the bottom plate, the width between the rotating wheels and the width between the clamping piece and the fixed block are matched with the width of an external linear guide rail, and the movable end of the clamping piece can be pushed to horizontally displace and extrude the side face of the external linear guide rail when the clamping wheel rotates.

2. A steady gripping localization fixture as claimed in claim 1, wherein: the rotating wheel is a bearing.

3. A steady gripping localization fixture as claimed in claim 2, wherein: the positioning shaft is arranged on the bottom plate, the step ring is arranged at the root of the positioning shaft, the inner ring of the bearing is inserted on the positioning shaft, and the bottom of the inner ring of the bearing is placed on the step ring.

4. A steady gripping localization fixture as claimed in claim 1, wherein: the movable end of the clamping piece is provided with an arc-shaped part, and the arc-shaped part is attached to the clamping wheel.

5. A steady gripping localization fixture as claimed in claim 1, wherein: the rotating wheels are in two pairs, and the axes of the rotating wheels are aligned with each other.

6. A steady gripping localization fixture as claimed in claim 1, wherein: the clamping piece and the fixing block are made of brass or red copper materials.

7. A steady gripping localization fixture as claimed in claim 1, 2 or 6, wherein: the side of the fixed block is provided with a rubber layer.