CN204195314U - Flat-nose pliers Bidirectional clamping apparatus - Google Patents

Abstract

The utility model relates to a clamping, supporting and positioning device for workpieces or cutting tools, in particular to a two-way clamping device for flat pliers, which includes a clamp seat, a screw rod, a jaw seat and a movable jaw. groove, the two sides of the screw are symmetrically provided with threads with equal pitch and opposite direction of rotation, and the movable jaw is connected with the jaw seat, wherein, the positioning structure of the screw is provided on the jaw seat in the middle of the screw, and additionally The sliding seat is threadedly connected with both sides of the screw respectively, the screw and the sliding seat are located in the through groove, the sliding seat is provided with a positioning boss and a threaded hole, and the jaw seat is provided with a positioning chute matching the positioning boss, And the mounting holes matching the threaded holes, the jaw seat and the sliding seat are connected by screws through the mounting holes and the threaded holes. The bidirectional clamping device of the flat-nose pliers of the utility model is convenient for replacing jaw seats, and is convenient for clamping workpieces of various sizes and shapes.

Description

Flat nose pliers two-way clamping device

technical field

The utility model relates to a clamping, supporting and positioning device for workpieces or cutting tools, in particular to a two-way clamping device for flat pliers.

Background technique

Flat-nose pliers, also known as machine vises, are a general-purpose fixture that is often used to install small workpieces. It is a random accessory for milling machines and drilling machines. It is fixed on the machine tool table and used to clamp the workpiece for cutting. It usually includes screw, movable jaw, clamp base and square nut. The movable jaw is connected with the square nut by pins, and the screw is threaded with the square nut. Turn the screw with a wrench, and drive the movable jaw to move through the screw to form a clamping of the workpiece. and loosen.

For the existing flat-nose pliers, the movable jaw and the square nut are fixedly positioned by pins. Since the pin is connected by the movable jaw and the square nut, its interchangeability is poor. Therefore, when using the existing vise to clamp the workpiece, in order to clamp workpieces of different shapes and sizes, different vise must be replaced.

Utility model content

In view of the above-mentioned defects in the prior art, the purpose of this utility model is to provide a bidirectional clamping device for vise that is convenient for replacing jaw seats and clamping workpieces of various sizes and shapes.

In order to achieve the above object, the technical solution of the utility model is: a two-way clamping device for flat pliers, including a clamp base, a screw rod, a jaw base and a movable jaw, the clamp base is provided with a through groove, and the two sides of the screw rod are symmetrically arranged. There are threads with equal pitch and opposite direction of rotation, and the movable jaw is connected with the jaw seat, wherein, the positioning structure of the screw is provided on the jaw seat in the middle of the screw, and additionally provided with slides that are threadedly connected to both sides of the screw respectively. The seat, the screw and the sliding seat are located in the through groove. The sliding seat is provided with a positioning boss and a threaded hole. The jaw seat is provided with a positioning chute matching the positioning boss and a mounting hole matching the threaded hole. The mouth seat and the sliding seat are connected by screws through mounting holes and threaded holes.

When adopting the above technical scheme, the workpiece to be clamped is placed between the two movable jaws. Since the two sides of the screw rod are symmetrically provided with threads with equal pitch and opposite direction of rotation, and the slide rods on the screw rod are respectively connected with the threads on both sides of the screw rod. Turn the screw to make the two sliding seats move relatively. Because the jaw seat is connected to the sliding seat, and the movable jaw is connected to the jaw seat, the movable jaw also moves relative to it, thereby clamping the workpiece; turn the screw in the opposite direction , the slides on both sides of the screw move towards each other, and similarly, the two movable jaws connected with the slides on both sides also move towards each other to loosen the workpiece. In the utility model, the sliding seat is provided with a positioning boss and a threaded hole, so only the jaw seat connected with the sliding seat is provided with a positioning chute matching the positioning boss and a mounting hole matching the threaded hole. By adjusting the positioning The boss is positioned in the chute so that the mounting holes are aligned with the threaded holes. Then the jaw seat and the sliding seat are connected by screws through the mounting holes and the threaded holes. In this way, on the premise of the same clamping device, workpieces of different sizes and shapes can be clamped by changing different jaw seats and positioning jaws.

Further, the middle of the screw is a cylinder with a diameter smaller than that on both sides, the positioning structure is a positioning seat fixed in the middle of the clamp seat, the positioning seat is provided with a through hole matching the cylinder in the middle of the screw, and the two sides of the positioning seat are respectively connected to the cylinder. The end faces at both ends meet. During the process of rotating the screw rod, the two sides of the positioning seat respectively abut against the end surfaces of the two ends of the cylinder, so the axial movement of the screw rod can be prevented.

Further, the cylinder is sleeved with a bearing, and the bearing is arranged in the through hole. When the screw is turned, the cylinder in the middle of the screw is prevented from directly rubbing against the through hole of the positioning seat, and the turning of the screw is more labor-saving.

Further, the middle of the screw is a cylinder with a diameter smaller than that of the two sides, and the positioning structure is a limiting plate arranged at both ends of the cylinder and abutting against the end faces of the cylinder respectively. In this way, the limiting plates at both ends of the cylinder can limit the movement of the screw rod in the axial direction.

Further, the sliding seat is provided with two positioning bosses and two threaded holes, and the two positioning bosses and the two threaded holes are respectively symmetrical with respect to the axis of the screw rod. During the process of clamping the workpiece, the force on the movable jaw is relatively large. Therefore, it is required that the slide seat and the jaw seat are firmly connected. Two positioning bosses and two threaded holes are provided on the slide seat to stably connect the jaw seat and the slide seat.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

Fig. 1 is the structural representation of embodiment 1 of the bidirectional clamping device of the utility model flat-nose pliers;

Fig. 2 is a structural schematic diagram of the jaw seat part in the embodiment of the flat-nose pliers bidirectional clamping device of the present invention;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is a structural schematic diagram of the sliding seat part in the embodiment of the bidirectional clamping device of the flat-nose pliers of the present invention;

Fig. 5 is a right side view of Fig. 4 .

Detailed ways

Example 1

As shown in Figure 1, a flat-nose pliers two-way clamping device includes a clamp base 1, a screw rod 2, a jaw base 3 and a movable jaw 4, the clamp base 1 is provided with a through groove, and the two sides of the screw rod 2 are symmetrically provided with equal pitches. , screw threads in the opposite direction, the movable jaw 4 and the jaw seat 3 are fixedly connected by bolts, wherein the clamp seat 1 in the middle of the screw 2 is provided with a positioning structure for the screw 2, in addition, additionally provided with threads connected to both sides of the screw 2 respectively The sliding seat 5, the screw rod 2 and the sliding seat 5 are located in the through groove, the sliding seat 5 is provided with a positioning boss 51 and a threaded hole 52, the jaw seat 3 is provided with a positioning chute 31 matching the positioning boss 51, and matching The mounting hole 32 of the threaded hole 52, the jaw seat 3 and the sliding seat 5 are connected by screws through the mounting hole 32 and the threaded hole 52.

In this embodiment, the middle of the screw rod 2 is a cylinder 7 with a diameter smaller than that on both sides, and the positioning structure is a positioning seat 6 fixed on the middle part of the clamp seat 1. The two sides respectively abut against the end faces of the two ends of the cylinder 7 . During the process of rotating the screw rod 2, the two sides of the positioning seat 6 respectively abut against the end surfaces of the two ends of the cylinder 7, so that the screw rod 2 can be prevented from moving in the axial direction.

A bearing is sheathed on the cylinder 7, and the bearing is arranged in the through hole. When the screw rod 2 is rotated, the cylinder 7 in the middle of the screw rod 2 is prevented from directly rubbing against the through hole of the positioning seat 6, and the rotation of the screw rod 2 is more labor-saving.

As shown in FIGS. 4 and 5 , two positioning bosses 51 and two threaded holes 52 are provided on the sliding seat 5 , and the two positioning bosses 51 and the two threaded holes 52 are respectively symmetrical about the axis of the screw rod 2 . During the process of clamping the workpiece, the force on the movable jaw 4 is relatively large. Therefore, it is required that the slide seat 5 and the jaw seat 3 be firmly connected. Two positioning bosses 51 and two threaded holes 52 are provided to connect the jaw seat 3 and the slide seat. 5 Connect stably.

Example 2

In this embodiment, the difference from Embodiment 1 is that the middle of the screw 2 is a cylinder with a diameter smaller than that of the two sides, and the positioning structure is a limiting plate arranged at both ends of the cylinder and abutted against the end faces of the cylinder respectively. In this way, the limit plates at both ends of the cylinder can limit the axial movement of the screw rod 2 .

Specific use process:

The workpiece to be clamped is placed between the two movable jaws 4. Since the two sides of the screw rod 2 are symmetrically provided with threads with equal pitch and opposite rotation direction, and the sliding seats 5 on the screw rod 2 are respectively threaded with the two sides of the screw rod 2. , turn the screw 2 to make the two sliding seats 5 move relatively, because the jaw seat 3 is connected to the sliding seat 5, and the movable jaw 4 is connected to the jaw seat 3, so the movable jaw 4 also moves relatively accordingly, thereby clamping the workpiece Tighten; turn the screw rod 2 in the opposite direction, and the sliding seats 5 on both sides of the screw rod 2 move toward each other. Similarly, the two movable jaws 4 connected with the sliding seats 5 on both sides also move toward each other to loosen the workpiece.

The above are only preferred embodiments of the present utility model, and it should be pointed out that for those skilled in the art, some deformations and improvements can be made without departing from the structure of the present utility model, and these should also be regarded as the present utility model. The scope of protection of the new model will not affect the effect of the utility model and the practicability of the patent.

Claims (5)

1. flat-nose pliers Bidirectional clamping apparatus, comprise clamp block, screw rod, jaw seat and moving jaw, described clamp block is provided with groove, it is equal that described screw rod bilateral symmetry is provided with pitch, the screw thread that rotation direction is contrary, described moving jaw is connected with jaw seat, it is characterized in that, clamp block in the middle part of described screw rod is provided with the location structure of screw rod, in addition, have additional the slide be threaded with screw rod both sides respectively, screw rod and slide are positioned at groove, described slide is provided with positioning boss and screwed hole, described jaw seat is provided with the positioning runner coordinating positioning boss, and the installing hole of mate with threaded holes, jaw seat and slide adopt screw to be connected by installing hole and screwed hole.

2. flat-nose pliers Bidirectional clamping apparatus according to claim 1, it is characterized in that, for diameter is less than the cylinder of both sides in the middle of described screw rod, described location structure is the positioning seat be fixed in the middle part of clamp block, described positioning seat is provided with the through hole coordinating cylinder in the middle part of screw rod, and positioning seat both sides offset with the end face at cylinder two ends respectively.

3. flat-nose pliers Bidirectional clamping apparatus according to claim 2, is characterized in that, described cylinder is arranged with bearing, and bearing arrangement is in through hole.

4. flat-nose pliers Bidirectional clamping apparatus according to claim 1, is characterized in that, for diameter is less than the cylinder of both sides in the middle of described screw rod, described location structure is for being located at cylinder two ends, and the limiting plate offseted with cylinder end face respectively.

5. flat-nose pliers Bidirectional clamping apparatus according to claim 1, is characterized in that, described moving jaw is provided with two positioning boss and two screwed holes, and two positioning boss, two screwed holes are symmetrical about screw axis respectively.