CN217344520U - Clamping device - Google Patents

Abstract

The utility model discloses a clamping device, which comprises a base, a moving component and a driving component, wherein the base comprises a base and a limiting part formed at one end of the base, and a first transmission part is formed on the base; the clamping device comprises a moving assembly and a driving assembly, wherein the moving assembly comprises a sliding block, a rotating shaft which is rotatably connected to the sliding block and a second transmission part which is connected with the rotating shaft in a matched mode, the driving assembly comprises a worm and a worm wheel which is connected with the worm in a matched mode, the worm is rotated by a wrench through a large reduction ratio of a worm and gear mechanism, the gear is driven to synchronously rotate through the rotation of the worm wheel, and the linear motion of the sliding block relative to the base is converted through the relative motion of a gear and a rack, so that the clamping device is more labor-saving and high in safety, and the risk of injury caused by knocking the wrench by an operator is reduced; in the machining process, due to the self-locking characteristic of the worm gear, the workpiece can be ensured not to be loosened even if vibration occurs; the stability of the workpiece in the machining process is ensured, and the product quality is favorably ensured.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of processing auxiliary assembly, specifically speaking relates to a clamping device.

Background

In the process of machining parts, a clamping device is widely used as a device for clamping parts to be machined, a flat tongs is a common clamping device, is also called a machine vice, is a general clamp, is commonly used in the field of machining, is used for mounting small-sized workpieces, is a random accessory of a milling machine and a drilling machine, is fixed on a machine tool workbench and is used for clamping the workpieces to be machined.

The common screw drive clamping flat tongs usually need to knock a flat rotating spanner with a heavy object during clamping to achieve the clamping effect, and the clamping mode is troublesome and laborious; when a flat tongs wrench is knocked by a heavy object, a handle is held by one hand, the handle is knocked by the heavy object held by the other hand, and the heavy object is in point contact with the handle in the knocking process, so that the heavy object is easy to slide, and the heavy object is knocked to the hand to cause injury accidents; when a plane or a welding part is milled, because the machining of the milling machine fly cutter disc belongs to intermittent cutting, when the flat tongs are under the action of the impact force of the fly cutter disc, the flat tongs vibrate, and the movable jaw of the flat tongs slightly moves due to the poor self-locking performance of a common screw rod and a nut, so that a clamped workpiece is loosened, the workpiece slides out and collides with a cutter, quality accidents are caused if the workpiece is light, and machine damage accidents are caused if the workpiece is heavy, and even the safety of surrounding operators is threatened.

Disclosure of Invention

An object of the utility model is to provide a clamping device to solve the ordinary flat tongs that exist among the prior art and at the tight in-process of clamp, have the risk of taking time, hard and injure by a crashing object, vibration in the processing can make the screw rod take place slightly to rotate, leads to the work piece to take place not hard up, takes place the quality incident scheduling problem even.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a clamping device, comprising:

the base comprises a base and a limiting part formed at one end of the base, wherein a first transmission part is formed on the base;

the moving assembly is movably connected to the base and comprises a sliding block, a rotating shaft and a second transmission part, wherein the rotating shaft is rotatably connected to the sliding block, the second transmission part is connected with the rotating shaft in a matched mode, and the second transmission part is connected with the first transmission part in a matched mode;

the driving assembly is connected to the sliding block and comprises a worm and a worm wheel in fit connection with the worm, and the worm wheel is connected to the rotating shaft;

the worm drives the worm wheel to rotate, the second transmission part is driven to rotate under the action of the rotating shaft, and then the sliding block is driven to move relative to the first transmission part.

In some embodiments of the present application, a first clamping surface is formed on the limiting portion, and a second clamping surface is formed on the slider, the second clamping surface being parallel to and opposite to the first clamping surface.

In some embodiments of the present application, the first transmission part includes at least one rack, and the second transmission part is at least one gear adapted to the number of the racks.

In some embodiments of the present application, a length direction of the first transmission portion is perpendicular to the first clamping surface of the limiting portion.

In some embodiments of the present application, an axial direction of the rotation shaft is perpendicular to a length direction of the first transmission portion.

In some embodiments of the present application, the first transmission part includes two racks spaced apart from each other, and the second transmission part includes two gears spaced apart from each other on the rotation shaft.

In some embodiments of the present application, a guide portion arranged in parallel with the rack is further formed on the base, and a support portion is formed on the slider, and in an installation state, the support portion is located in the guide portion and moves with the slider relative to the guide portion.

In some embodiments of the present application, an end of the slider is provided with a worm gear case in which the worm gear is installed.

In some embodiments of the present application, the end of the worm is formed with a drive surface.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

according to the clamping device, the worm is rotated by the wrench through the large reduction ratio of the worm gear mechanism, the gear is driven to synchronously rotate through the rotation of the worm gear, and the linear motion of the sliding block relative to the base is converted through the relative motion of the gear and the rack, so that the clamping device is more labor-saving and high in safety, and the risk of injury caused by knocking the wrench by an operator is reduced;

in the machining process, due to the self-locking characteristic of the worm gear, the workpiece can be ensured not to be loosened even if vibration occurs; the stability of the workpiece in the machining process is ensured, and the product quality is favorably ensured.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view of an embodiment of the clamping device proposed by the present invention;

fig. 2 is a left side view of an embodiment of the clamping device of the present invention;

fig. 3 is a top view of an embodiment of the clamping device of the present invention;

FIG. 4 is a schematic view of a slider configuration;

in the figure, the position of the upper end of the main shaft,

100. a base;

110. a base;

111. a first transmission unit;

112. a guide portion;

120. a limiting part;

121. a first clamping surface;

200. a moving assembly;

210. a slider;

220. a rotating shaft;

211. a second clamping surface;

212. rotating the hole;

213. a transmission groove;

230. a second transmission part;

240. a support portion;

241. a guide pin;

300. a drive assembly;

310. a worm;

320. a worm gear.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

As shown in fig. 1-3, the present application provides a clamping device for clamping and fixing a workpiece to facilitate machine tool processing, the clamping device includes a base 100 for fixing on an operation table, the base 100 includes a base 110 for fixing and a limiting portion 120 located at an end of the base 110, and a moving assembly 200 is movably connected to the base 110.

The moving assembly 200 specifically includes a sliding block 210, a rotating shaft 220 rotatably connected to the sliding block 210, and a second transmission part 230 cooperatively connected with the rotating shaft 220, wherein the second transmission part 230 is cooperatively connected with the first transmission part 111; the moving assembly 200 is connected with a driving assembly 300, the driving assembly 300 includes a worm 310 and a worm wheel 320 cooperatively connected with the worm 310, and the worm wheel 320 is coaxially connected with the rotating shaft 220.

The workpiece is placed in a variable gap formed between the limiting part 120 and the sliding block 210, a first clamping surface 121 is formed on the limiting part 120, a second clamping surface 211 is formed on the sliding block 210, the first clamping surface 121 and the second clamping surface 211 are parallel to each other, the workpiece is placed between the first clamping surface 121 and the second clamping surface 211, and along with the movement of the moving assembly 200, the distance between the limiting part 120 and the sliding block 210 changes, so that the workpiece is clamped or released.

The base 100 includes a base 110 and a limiting portion 120 formed at one end of the base 110, wherein a first transmission portion 111 is formed on the base 110; an operator clamps one end of the worm 310 through a tool such as a wrench, drives the worm 310 to rotate, and the worm 310 drives the worm wheel 320 to rotate, and under the action of the rotating shaft 220, the second transmission part 230 is driven to rotate, and further the slider 210 is driven to move relative to the first transmission part 111.

Specifically, the length direction of the first transmission part 111 is perpendicular to the first clamping surface 121 of the limiting part 120, the axial direction of the rotating shaft 220 is perpendicular to the length direction of the first transmission part 111, and the rotating shaft 220 is coaxial with the gear, so that the slider 210 is far away from or close to the first clamping surface 121 along the first transmission part 111, thereby changing the distance between the slider and the first clamping surface 121 and clamping or releasing the workpiece.

The first transmission portion 111 includes at least one rack, the second transmission portion 230 is at least one gear adapted to the number of the racks, the rotating shaft 220 drives the gear to rotate, and the racks are fixed, so that the gears relatively move with respect to the racks, thereby changing the relative position between the sliding block 210 and the limiting portion 120.

In order to improve the stability of the movement process, the first transmission part 111 includes two racks disposed at intervals, the second transmission part 230 is two gears disposed at intervals on the rotating shaft 220, the gears are respectively installed in cooperation with the two racks, and the gears move relative to the racks, so that the slider 210 moves stably on the base 110.

The slider 210 is provided with a rotation hole 212, the rotation shaft 220 is rotatably connected in the rotation hole 212, the slider 210 is further provided with a transmission groove 213 with a downward opening, and the transmission groove 213 is used for installing the second transmission part 230.

Further, as shown in fig. 4, in other embodiments of the present application, a guide portion 112 disposed parallel to the rack is further formed on the base 110, the guide portion 112 is specifically a guide groove structure opened on both sides of the base 110 and extending inward, a support portion 240 extending downward is formed on the slider 210, and a guide foot 241 is formed at a distal end of the support portion 240.

Under the installation state, the guide foot 241 is located the guide part 112, and the slider 210 removes the in-process, and the guide foot 241 removes in the guide part 112, and then improves the stability of motion, and provides certain restriction on vertical direction, reduces the pressure between gear and the rack, is favorable to improving the steady of motion.

The end of the slider 210 is provided with a worm wheel 320 box, the worm wheel 320 is installed in the worm wheel 320 box, the worm wheel 320 box is detachably installed with a box cover, one end of the worm 310 extends from the inside of the worm wheel 320 box to the outside, so that the worm can conveniently rotate, preferably, the end of the worm 310 is formed with a driving surface, and the operator clamps the end of the worm 310 with a wrench to apply a rotating force to the driving surface, so as to drive the worm 310 to rotate.

The specific using process is as follows:

firstly, the operator rotates the worm 310, and the worm 310 drives the worm wheel 320 to rotate, so that the rotating shaft 220 and the gear rotate synchronously; the gear and the rack are matched, the gear rotates, the gear moves linearly relative to the rack, the sliding block 210 is gradually far away from the limiting part 120, in the sliding movement process, the guide foot 241 moves in the guide part 112, the gap between the first clamping surface 121 and the second clamping surface 211 is enlarged, and a workpiece is conveniently placed in the middle of the gap.

After the workpiece is placed, the worm 310 is rotated in the reverse direction, so that the sliding block 210 is gradually close to the limiting part 120, the workpiece is clamped between the first clamping surface 121 and the second clamping surface 211, the workpiece can be clamped by a small force in the using process by utilizing the large reduction ratio of the worm wheel 320 and the worm 310, the worm wheel 320 and the worm 310 have the self-locking characteristic, the workpiece can be prevented from loosening even if vibration occurs, the stability of the workpiece in the processing process is ensured, and quality accidents in the processing process are avoided.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments of the present invention are only examples, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also intended to be covered by the scope of the present invention.

Claims (9)

1. A clamping device, comprising:

the base comprises a base and a limiting part formed at one end of the base, wherein a first transmission part is formed on the base;

the moving assembly is movably connected to the base and comprises a sliding block, a rotating shaft and a second transmission part, wherein the rotating shaft is rotatably connected to the sliding block, the second transmission part is connected with the rotating shaft in a matched mode, and the second transmission part is connected with the first transmission part in a matched mode;

the driving assembly is connected to the sliding block and comprises a worm and a worm wheel in fit connection with the worm, and the worm wheel is connected to the rotating shaft;

the worm drives the worm wheel to rotate, the second transmission part is driven to rotate under the action of the rotating shaft, and then the sliding block is driven to move relative to the first transmission part.

2. The clamping device as recited in claim 1,

a first clamping surface is formed on the limiting part, and a second clamping surface which is parallel to and opposite to the first clamping surface is formed on the sliding block.

3. The clamping device as recited in claim 2,

the first transmission part comprises at least one rack, and the second transmission part is at least one gear matched with the number of the racks.

4. Clamping device according to claim 3,

the length direction of the first transmission part is perpendicular to the first clamping surface of the limiting part.

5. The clamping device as recited in claim 2,

the axial direction of the rotating shaft is perpendicular to the length direction of the first transmission part.

6. The clamping device as recited in claim 3,

the first transmission part comprises two racks arranged at intervals, and the second transmission part is two gears arranged on the rotating shaft at intervals.

7. The clamping device as recited in claim 6,

the base is further provided with a guide part arranged in parallel with the rack, the sliding block is provided with a support part, the tail end of the support part is provided with a guide pin, and the guide pin is positioned in the guide part and moves relative to the guide part along with the sliding block in an installation state.

8. The clamping device as recited in claim 1,

the end part of the sliding block is provided with a worm gear box, and the worm gear is arranged in the worm gear box.

9. Clamping device according to claim 1,

the end of the worm is formed with a drive face.

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