CN209551227U - A wedge-type force-increasing clamping mechanism - Google Patents

Abstract

The utility model relates to an anchor clamps field especially relates to a wedge reinforcement clamping mechanism. It includes the main push rod, vice push rod and base, be equipped with main spout and vice spout on the base, the main push rod slides and sets up in main spout, vice push rod slides and sets up in vice spout, be equipped with the direction inclined plane on the main push rod, the one end of vice push rod slides and sets up on the direction inclined plane, the other end of vice push rod is fixed with moves the clamping part, be equipped with on the base and decide the clamping part, it has the centre gripping clearance that is used for centre gripping work piece to move the clamping part and decide between the clamping part, when the main push rod slides in main spout, the direction inclined plane promotes vice push rod and slides in vice spout, it slides to the direction that is close to deciding the clamping part to. The utility model discloses can fix the work piece steadily, reduce work piece rejection rate and cutter loss rate, improve anchor clamps centre gripping precision and life.

Description

A wedge-type force-increasing clamping mechanism

technical field

The utility model relates to the field of clamps, in particular to an inclined wedge type force-increasing clamping mechanism.

Background technique

When milling parts such as bars and special-shaped parts, such as rack milling planes, piston milling sides, etc., due to fixture structure or improper use, the workpiece is easy to vibrate, resulting in high workpiece processing rejection rate, serious tool loss, and insufficient fixture accuracy. and reduced service life.

For example, the Chinese Patent Authorization Announcement No. CN 201720837115.5 U, the date of authorization is 2018.01.05, and the name is "a support fixture for CNC machine tools", which discloses a support fixture for CNC machine tools, which includes multiple sets of support columns and two sets of support plates , bracket and bottom plate; multiple sets of support columns can be retracted, including multiple sets of springs; also includes multiple sets of left threaded pipes, multiple sets of left threaded rods, multiple sets of right threaded pipes and multiple sets of right threaded rods, two sets of support plates The top is provided with multiple sets of upper placement grooves, and upper ball bearings are arranged in multiple sets of upper placement grooves; the top of the bottom plate is provided with lower placement grooves, and lower ball bearings are arranged in the lower placement grooves, and the bottom end of the bracket is inserted into the lower ball bearings .

This automatic door of CNC machine tools still has the above problems, that is, due to the structure of the fixture or improper use of the workpiece, it is easy to vibrate, resulting in a high rate of workpiece processing rejects, serious tool loss, insufficient fixture accuracy and reduced service life.

Utility model content

The purpose of the utility model is to overcome the disadvantages of the prior art that the fixture structure or improper use of the workpiece is easy to vibrate, resulting in high workpiece processing reject rate, serious tool loss, insufficient fixture precision and reduced service life, etc., and provides a The inclined wedge type force-increased clamping mechanism can stably fix the workpiece, reduce the scrap rate of the workpiece and the loss rate of the tool, and improve the clamping accuracy and service life of the fixture.

In order to achieve the above object, the utility model adopts the following technical solutions:

A wedge-type power-increasing clamping mechanism, including a main push rod, an auxiliary push rod and a base, the base is provided with a main chute and an auxiliary chute, the main push rod is slidably arranged in the main chute, and the auxiliary push rod The slide is set in the auxiliary chute, the main push rod is provided with a guide slope, one end of the auxiliary push rod is slidingly arranged on the guide slope, the other end of the auxiliary push rod is fixed with a movable clamping part, and the base is provided with a fixed clamp There is a clamping gap between the movable clamping part and the fixed clamping part for clamping the workpiece. When the main push rod slides in the main chute, the guide slope pushes the auxiliary push rod to slide in the auxiliary chute, and the movable clamp The holding part slides in the direction close to the fixed clamping part.

When the main push rod slides in the main chute, the guide slope pushes the auxiliary push rod to slide in the auxiliary chute, thereby driving the moving clamping part to slide towards the direction close to the fixed clamping part, and then clamps the workpiece. The force is easy to retreat. In the utility model, the guide slope provides increased force for the clamping and fixing of the workpiece, and the guide slope and the auxiliary guide rod can be self-locked to prevent the vibration of the workpiece caused by the retreat of the movable clamping part, and can stably fix the workpiece. Reduce the workpiece rejection rate and tool loss rate, improve the clamping accuracy and service life of the fixture, the main push rod and the auxiliary push rod are designed with the principle of leverage, and the force conversion can be realized by designing different force arms.

As a preference, the main push rod is provided with a dovetail groove arranged obliquely, the bottom surface of the dovetail groove constitutes the guide slope, the end of the auxiliary push rod is provided with a slider matching the dovetail groove, and the auxiliary push rod passes through the sliding Block slides are set in dovetail slots. The dovetail slot cooperates with the slider, so that the main push rod and the auxiliary push rod can realize a stable sliding connection.

Preferably, an oil cylinder is fixed on the base, and the oil cylinder is used to push the main push rod to slide in the main chute. The oil cylinder pushes the main push rod to realize automation.

Preferably, the oil cylinder closes one end of the main chute, and the other end of the main chute is provided with an end cover, and the end cover closes the other end of the main chute. Both ends of the main chute are closed to prevent the main push rod from slipping out of the main chute.

Preferably, the inclination angle of the guide slope relative to the axis of the main push rod is 5°-30°. The inclination angle of the guide slope needs to meet the self-locking condition of the auxiliary guide rod.

Preferably, the main chute communicates with the auxiliary chute, and the length direction of the main chute is perpendicular to the length direction of the auxiliary chute. It is convenient to convert the thrust of the main push rod into the thrust of the auxiliary push rod.

The beneficial effects of the utility model are as follows: 1) The guide slope provides increased force for the clamping and fixing of the workpiece, and the guide slope and the auxiliary guide rod can be self-locked to prevent the vibration of the workpiece caused by the retraction of the movable clamping part, and can stably fix the workpiece , reduce the workpiece rejection rate and tool loss rate, and improve the clamping accuracy and service life of the fixture; 2) The dovetail groove and the slider cooperate to enable the main push rod and the auxiliary push rod to achieve a stable sliding connection, and the main push rod and the auxiliary push rod The rod adopts the principle of lever design, and the conversion of force can be realized by designing different moment arms.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of another perspective of the utility model;

Fig. 3 is a schematic view of the internal structure of the utility model.

In the figure: main push rod 1, guide slope 11, dovetail groove 12, auxiliary push rod 2, slider 21, base 3, main chute 4, oil cylinder 5, dynamic clamping part 6, fixed clamping part 7, clamp Hold gap 8, end cover 9.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

As shown in Figures 1 to 3, a wedge-type power-increasing clamping mechanism includes a main push rod 1, an auxiliary push rod 2 and a base 3, and the base is provided with a main chute 4 and an auxiliary chute. The main push rod is slidably arranged in the main chute, and an oil cylinder 5 is fixed on the base, and the oil cylinder is used to promote the main push rod to slide in the main chute, and the oil cylinder promotes the main push rod to realize automation. The auxiliary push rod is slidably arranged in the auxiliary chute, and the main push rod is provided with a guide slope 11. The inclination angle of the guide slope relative to the axis of the main push rod is 10°. condition. One end of the auxiliary push rod is slidingly arranged on the guide slope, the other end of the auxiliary push rod is fixed with a movable clamping part 6, and the base is provided with a fixed clamping part 7. The clamping gap 8 for clamping the workpiece. The main chute communicates with the auxiliary chute, and the length direction of the main chute is perpendicular to the length direction of the auxiliary chute. It is convenient to convert the thrust of the main push rod into the thrust of the auxiliary push rod. When the main push rod slides in the main chute, the guide slope pushes the auxiliary push rod to slide in the auxiliary chute, and the moving clamping part slides towards the direction close to the fixed clamping part.

When the utility model is in use, the oil cylinder pushes the main push rod to slide in the main chute, and the guide slope pushes the auxiliary push rod to slide in the auxiliary chute, thereby driving the moving clamping part to slide towards the direction close to the fixed clamping part, and then clamping Tighten the workpiece, and the workpiece is easily retreated when it is processed. The guide slope in the utility model provides increased force for the clamping and fixing of the workpiece, and the guide slope and the auxiliary guide rod can be self-locked to prevent the workpiece from vibrating due to the retraction of the movable clamping part. It can stably fix the workpiece, reduce the scrap rate of the workpiece and the loss rate of the tool, and improve the clamping accuracy and service life of the fixture. The main push rod and the auxiliary push rod are designed on the principle of leverage, and the force conversion can be realized by designing different force arms.

Specifically, the main push rod is provided with an obliquely arranged dovetail groove 12, and the bottom surface of the dovetail groove forms a guiding inclined surface. The end of the auxiliary push rod is provided with a slider 21 matching the dovetail groove, and the auxiliary push rod slides through the slider. Set in dovetail groove. The dovetail slot cooperates with the slider, so that the main push rod and the auxiliary push rod can realize a stable sliding connection.

Specifically, the oil cylinder closes one end of the main chute, and the other end of the main chute is provided with an end cover 9, and the end cover closes the other end of the main chute. Both ends of the main chute are closed to prevent the main push rod from slipping out of the main chute.

The beneficial effect of the utility model is that: the guide inclined surface provides force for the clamping and fixing of the workpiece, and the guide inclined surface and the auxiliary guide rod can be self-locked to prevent the vibration of the workpiece caused by the retraction of the movable clamping part, and can stably fix the workpiece, reducing the The workpiece rejection rate and tool loss rate improve the clamping accuracy and service life of the fixture; the dovetail groove and the slider cooperate to enable the main push rod and the auxiliary push rod to achieve a stable sliding connection, and the main push rod and the auxiliary push rod are lever-type Principle design, force conversion can be realized by designing different force arms.

Claims (6)

1. a kind of Wedge type reinforcement clamp system, characterized in that be equipped with main cunning including primary push rod, secondary push rod and pedestal, pedestal Slot and secondary sliding slot, primary push rod are slidably arranged in main sliding slot, and secondary push rod is slidably arranged in secondary sliding slot, and primary push rod is equipped with guiding The one end on inclined-plane, secondary push rod is slidably arranged on guiding surface, and the other end of secondary push rod is fixed with dynamic clamping part, and pedestal is equipped with Determine clamping part, dynamic clamping part is in determining have clamping gap, when primary push rod slides in main sliding slot, guiding surface between clamping part Secondary push rod is pushed to slide in secondary sliding slot.

2. a kind of Wedge type reinforcement clamp system according to claim 1, characterized in that the primary push rod is equipped with inclination The dovetail groove of arrangement, the bottom surface of dovetail groove constitute the guiding surface, and the end of secondary push rod is equipped with and dovetail groove matches Sliding block, secondary push rod are slidably arranged in dovetail groove by sliding block.

3. a kind of Wedge type reinforcement clamp system according to claim 1 or 2, characterized in that be fixed on the pedestal Oil cylinder, oil cylinder is for pushing primary push rod to slide in main sliding slot.

4. a kind of Wedge type reinforcement clamp system according to claim 3, characterized in that the oil cylinder is by the one of main sliding slot End seal is closed, and the other end of main sliding slot is equipped with end cap, and end cap closes the other end of main sliding slot.

5. a kind of Wedge type reinforcement clamp system according to claim 1 or 2, characterized in that the guiding surface is opposite In the tilt angle of featured rod axis be 5 ° ~ 30 °.

6. a kind of Wedge type reinforcement clamp system according to claim 1 or 2, characterized in that the main sliding slot and pair are sliding Slot connection, the length direction of the length direction of main sliding slot perpendicular to secondary sliding slot.