CN102744633A - Eccentric-wheel-type rapid clamping vice - Google Patents

Abstract

The invention discloses an eccentric wheel type fast clamping vise. The eccentric wheel type fast clamping vise includes a fixed tong body installed on a base, and a movable tong body and an eccentric wheel device are installed on the fixed tong body; The upper plane including the base is provided with a positioning cylinder, the positioning cylinder is matched with the hole at the bottom of the fixed pliers body, the bottom plane of the fixed pliers body abuts against the upper plane of the base, and fixed bolts are arranged on both sides of the fixed pliers body; the two sides of the fixed pliers body There are also horizontal convex grooves on the body of the fixed tongs. The movable tong body is installed on the fixed tong body, and the convex groove of the movable tong body is inserted into the convex groove of the fixed tong body; the fixed tong body and the movable tong body are provided with jaws. plate. Through the above method, the present invention can greatly shorten the time required for clamping the workpiece while ensuring sufficient clamping force to make the clamping of the workpiece reliable, and is especially suitable for occasions where the size of the blank is frequently changed; and the structure is simple and compact, and the appearance is beautiful. Low manufacturing cost; easy replacement of parts after wear.

Description

An Eccentric Wheel Type Quick Clamping Vise

technical field

The invention relates to the field of mechanical manufacturing, in particular to an eccentric wheel type fast clamping vise.

Background technique

The machine vise is fixed on the machine tool through the base. The fixed clamp body is assembled with the base through bolts. Loosening the bolts to fix the body of the clamp can rotate a certain angle relative to the base to meet the processing requirements. The cylinder below the square nut cooperates with the space on the body of the fixed pliers, so that the box nut is axially positioned relative to the body of the fixed pliers. The screw rod is rotatably assembled on the movable tong body through a square nut, and the nut fixes the screw rod on the movable jaw, so that the rotating screw rod can drive the movable tong body to move back and forth relative to the fixed tong body, thereby achieving the effect of clamping and loosening the workpiece. the

This kind of ordinary vise with screw rod and nut as transmission parts has high manufacturing cost and complicated installation and debugging because the screw rod is a slender rod and requires high precision. Screw and nut transmission converts rotary motion into linear motion. The transmission efficiency is low, and it takes a long time to clamp the workpiece. It is even more inconvenient in the occasion of frequent replacement of different blank sizes.

Contents of the invention

The technical problem mainly solved by the present invention is to provide an eccentric wheel type fast clamping vise, which can greatly shorten the time required for clamping the workpiece while ensuring sufficient clamping force to clamp the workpiece reliably, and is especially suitable for frequent It is used when the size of the blank is changed; and the structure is simple and compact, the appearance is beautiful, and the manufacturing cost is low; the parts are easy to replace after they are worn out.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide an eccentric wheel type quick clamping vise, the eccentric wheel type quick clamping vise includes a fixed clamp body installed on the base, and There is a movable clamp body and an eccentric wheel device; the upper plane including the base is provided with a positioning cylinder, the positioning cylinder is matched with the hole at the bottom of the fixed clamp body, the bottom plane of the fixed clamp body abuts against the upper plane of the base, and the two sides of the fixed clamp body Fixed bolts are provided; horizontal convex grooves are also provided on both sides of the fixed tong body, and the movable tong body is installed on the fixed tong body, and the convex groove of the movable tong body matches the convex groove of the fixed tong body; The pliers body and the movable pliers body are provided with upward opening jaws, the fixed pliers body and the movable pliers body are equipped with jaw plates on the corresponding jaw surfaces, and the fixed pliers body is equipped with an eccentric wheel on the right side of the movable pliers body device, the eccentric wheel device is against the movable tong body.

Preferably, the upper plane of the fixed pliers body is further provided with a plurality of sockets, and the sockets are arranged in a straight line and parallel to the convex grooves of the fixed pliers body.

Preferably, the eccentric wheel device includes an eccentric wheel shaft, an eccentric wheel handle and an eccentric wheel, and the lower end of the eccentric wheel shaft passes through the eccentric wheel and is installed in the socket on the plane of the fixed pliers with clearance fit, and the eccentric wheel shaft and the eccentric wheel are fixed Connection, the upper end of the eccentric wheel shaft is provided with an eccentric wheel handle that can be moved left and right; the arc edge of the eccentric wheel is against the body of the movable tongs.

The beneficial effects of the present invention are: an eccentric wheel type fast clamping vise of the present invention can greatly shorten the time required for clamping the workpiece while ensuring sufficient clamping force to ensure reliable clamping of the workpiece, and is especially suitable for frequent It is used when the size of the blank is changed; and the structure is simple and compact, the appearance is beautiful, and the manufacturing cost is low; the parts are easy to replace after they are worn out.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of an eccentric wheel type quick clamping vise of the present invention;

Fig. 2 is a sectional view of an eccentric wheel type quick clamping vise of the present invention;

Fig. 3 is a working principle diagram of the eccentric wheel device of the eccentric wheel type quick clamping vise of the present invention;

Fig. 4 is a principle diagram of an eccentric wheel clamping workpiece of the eccentric wheel type quick clamping vise of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

See also Fig. 1, Fig. 2 and Fig. 3, the embodiment of the present invention comprises:

An eccentric wheel type quick clamping vise, the eccentric wheel type quick clamping vise comprises a fixed tong body 2 installed on a base 1, a movable tong body 5 and an eccentric wheel device 11 are installed on the fixed tong body 2; The description also includes that the upper plane of the base 1 is provided with a positioning cylinder 10, the positioning cylinder 10 is matched with the hole at the bottom of the fixed clamp body 2, the bottom plane of the fixed clamp body 2 is abutted against the upper plane of the base 1, and the fixed clamp body 2 is provided with Fixed bolts 9; horizontal convex grooves are also provided on both sides of the fixed tongs body 2, and the movable tongs body 5 is installed on the fixed tongs body 2, and the convex grooves of the movable tongs body 5 match the convex grooves of the fixed tongs body 2 ; Described also includes that fixed tongs body 2 and movable tongs body 5 are provided with jaws 3 of upward opening, and fixed tongs body 2 is provided with jaw plate 4 on the jaw surface corresponding to movable tongs body 5; Fixed tongs body 2 An eccentric wheel device 11 is also installed on the right side where the movable tong body 5 is installed, and the eccentric wheel device 11 abuts on the movable tong body 5 .

The upper plane of the fixed pliers body 2 is also provided with a plurality of jacks 12, and the jacks 12 are arranged in a straight line and parallel to the convex grooves of the fixed pliers body.

The eccentric wheel device 11 includes an eccentric wheel shaft 6, an eccentric wheel handle 7 and an eccentric wheel 8, and the lower end of the eccentric wheel shaft 6 passes through the eccentric wheel 8 and is installed in the jack 12 on the upper plane of the fixed clamp body 2 and fits with clearance, and the eccentric wheel The wheel shaft 6 is fixedly connected with the eccentric wheel 8, and the upper end of the eccentric wheel shaft 6 is provided with an eccentric wheel handle 7 which can be moved left and right;

The working mode of a kind of eccentric wheel type fast clamping vise of the present invention is: referring to Fig. 4, O ₂ is the geometric center of the circular eccentric wheel, R is its geometric radius, O ₁ point is the center of rotation of the eccentric wheel, O ₂ O ₁ is the eccentricity. If a circle is drawn with O ₁ as the center and r as the diameter, the eccentric wheel is divided into 3 parts. Among them, the dotted line part is a "base disk", the radius r=R- e. The other two parts are two identical curved wedges. When the eccentric wheel rotates clockwise around the center of rotation _O1 , it is equivalent to an arc wedge gradually wedged between the "base disc" and the workpiece, thereby clamping the workpiece.

Referring to Figure 3, e is the eccentricity, R is the geometric radius of the eccentric wheel, and L is the distance between the positioning holes on the clamp body; when R+e>L, clamping without blind spots can be realized; when R+e=L, clamping The tight state is at the extreme position, which is dangerous and easy to slip; when a workpiece needs to be clamped, first push the movable jaw to the contact position with the workpiece, and then put the shaft of the eccentric wheel into the fixed clamp body. In the lower hole, when turning clockwise, it is equivalent to an arc-shaped wedge gradually wedged between the "base disc" and the workpiece, thereby clamping the workpiece; loosen the fixing bolt 9 to rotate the clamp body 2 by 360°, select More suitable operating position, and then lock the fixing bolt 9.

There is another preferred implementation mode of the present invention, as shown in FIG. 3 : R+e>2L is required. When a workpiece needs to be clamped, first push the movable clamp body to the contact position with the workpiece, make the reference line on the eccentric wheel perpendicular to the movable clamp body, and then put the shaft of the eccentric wheel into the positioning hole on the fixed clamp body , the distance S between the end of the reference line on the eccentric wheel and the movable clamp body is the shortest. The hole where the eccentric is located is the most suitable clamping location. Then pull the handle to make the eccentric rotate clockwise around the center of rotation, thereby clamping the workpiece. When the external force is removed, the jaws are not easy to loosen.

An eccentric wheel type fast clamping vise of the present invention can greatly shorten the time required for clamping the workpiece while ensuring sufficient clamping force to clamp the workpiece reliably, and is especially suitable for use in occasions where the size of the blank is frequently changed; Moreover, the structure is simple and compact, the appearance is beautiful, and the manufacturing cost is low; the parts are easy to replace after they are worn out.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (3)

1. An eccentric wheel type fast clamping vise is characterized in that: the eccentric wheel type quick clamping vise comprises a fixed clamp body installed on the base, and a movable clamp body and an eccentric wheel device are installed on the fixed clamp body; The above includes that the upper plane of the base is provided with a positioning cylinder, the positioning cylinder is matched with the hole at the bottom of the fixed tong body, the bottom plane of the fixed tong body is abutted against the upper plane of the base, and fixed bolts are arranged on both sides of the fixed tong body; the two sides of the fixed tong body There are also horizontal convex grooves on the side, and the movable tong body is installed on the fixed tong body, and the convex groove of the movable tong body matches the convex groove of the fixed tong body; the fixed tong body and the movable tong body are provided with upward opening The jaws of the fixed tong body and the corresponding jaw surface of the movable tong body are equipped with a jaw plate, and the right side of the movable tong body is installed on the fixed tong body, and an eccentric wheel device is installed on the movable tong body. . 2. A kind of eccentric wheel type fast clamping vise according to claim 1, characterized in that: the upper plane of the fixed clamp body is also provided with a plurality of jacks, and the jacks are arranged in a straight line and parallel to Convex grooves for securing the body of the pliers. 3. An eccentric wheel type quick clamping vise according to claim 1, characterized in that: the eccentric wheel device includes an eccentric wheel shaft, an eccentric wheel handle and an eccentric wheel, and the lower end of the eccentric wheel shaft passes through the eccentric wheel Installed in the flat socket on the body of the fixed pliers and matched with clearance, the eccentric wheel shaft is fixedly connected with the eccentric wheel, and the upper end of the eccentric wheel shaft is provided with an eccentric wheel handle that can be moved left and right; the arc edge of the eccentric wheel is against the body of the movable pliers.