CN218904479U - Workpiece fixing device for machine tool - Google Patents

Abstract

The utility model relates to the technical field of machine tool processing, and discloses a workpiece fixing device for a machine tool, which includes a base plate, a through hole penetrating through the entire base plate is opened on the right side of the base plate, a rotating shaft is arranged in the through hole, and the base plate The top of the hydraulic push rod is fixedly connected with a hydraulic push rod, and the hydraulic push rod is symmetrically arranged on the left and right. The left side of the hydraulic push rod is fixedly connected with a U-shaped plate, and the inner cavity top wall and the bottom wall of the U-shaped plate are fixed. The same mounting plate is connected, the right side of the mounting plate is plugged with a first slide bar, the left side of the first slide bar is fixedly connected with an intermediate plate, and the right side of the mounting plate is plugged with a second slide bar rod, and the left side of the second sliding rod is fixedly connected with a clamping plate. The workpiece fixing device of the machine tool solves the problem that the current milling machine fixtures are mostly rigid clamping. It is not convenient to adjust the tightness when clamping workpieces with different hardness, which may easily cause scratches on the surface of some workpieces with lower hardness and affect the processing accuracy. question.

Description

A workpiece fixing device for a machine tool

technical field

The utility model relates to the technical field of machine tool processing, in particular to a workpiece fixing device for machine tools.

Background technique

Machine tools can be divided into eleven categories such as lathes, milling machines, drilling machines, boring machines, and grinders. When using any type of machine tool to process a workpiece, it is necessary to use a fixture to fix the workpiece to achieve the purpose of processing.

The current milling machine fixtures are mostly rigid clamping, and the force is the same when clamping different workpieces. It is not convenient to adjust the tightness when clamping workpieces with different hardness, which may easily cause some surface scratches on workpieces with lower hardness. It affects the machining accuracy, so a workpiece fixing device for machine tools is proposed to solve the above-mentioned problems.

Utility model content

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the utility model provides a workpiece fixing device for machine tools, which has the advantages of being convenient to adjust the clamping force, etc., and solves the problem that the current milling machine clamps are mostly rigid clamping, and the force when clamping different workpieces All the same, it is not convenient to adjust the tightness when clamping workpieces with different hardness, and it is easy to cause scratches on the surface of some workpieces with lower hardness, which affects the processing accuracy.

(2) Technical solutions

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a workpiece fixing device for a machine tool, including a base plate, a through hole penetrating the entire base plate is opened on the right side of the base plate, a rotating shaft is arranged in the through hole, and the base plate The top of the hydraulic push rod is fixedly connected with a hydraulic push rod, and the hydraulic push rod is symmetrically arranged on the left and right. The left side of the hydraulic push rod is fixedly connected with a U-shaped plate, and the inner cavity top wall and the bottom wall of the U-shaped plate are fixed. The same mounting plate is connected, the right side of the mounting plate is plugged with a first slide bar, the left side of the first slide bar is fixedly connected with an intermediate plate, and the right side of the mounting plate is plugged with a second slide bar rod, the left side of the second sliding rod is fixedly connected with a clamping plate, the right side of the mounting plate is threadedly connected with an adjusting bolt, the same spring is fixedly connected between the clamping plate and the middle plate, and the The outer side of the rotating shaft is threadedly connected with sliders, and the number of the sliders is two and symmetrically arranged. The top of the bottom plate is provided with a chute.

The beneficial effects of the utility model are: the sliding block slides in the chute by rotating the rotating shaft provided with the external thread, and the thread in the opposite direction will make the left and right sliding blocks move closer to or farther away from each other, and the sliding block moves to an appropriate position. After clamping the workpiece, it can be used as a limit block to limit the farthest position of the hydraulic push rod movement, so as to limit the entire clamping force. After clamping the workpiece, the tension of the spring can be adjusted by turning the adjusting bolt, so as to achieve fine adjustment. The effect of clamping force.

The workpiece fixing device for the machine tool has the advantage of being easy to adjust the clamping force.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, the chute is symmetrically arranged left and right, and the right side of the slider is in contact with the left side of the U-shaped plate.

The beneficial effect of adopting the above further solution is that it is convenient for the slider to slide in the slide groove, and at the same time, the slider can be used as a limit block.

Further, external threads are provided on the outer side of the rotating shaft, and the external threads are arranged left and right symmetrically, and the left and right threads have opposite directions of rotation.

The beneficial effect of adopting the above further scheme is that the sliding blocks adapted to it can move toward or away from each other.

Further, the left end of the rotating shaft is provided with a square hole, and an external rocker can be plugged into the square hole.

The beneficial effect of adopting the above further solution is that it is convenient to rotate the rotating shaft.

Further, the number of the springs is six and arranged symmetrically up and down, and the left side of the clamping plate is fixedly connected with a non-slip rubber pad.

The beneficial effect of adopting the above further solution is to increase the clamping force and prevent the workpiece from slipping.

Further, the number of the first sliding bars is six and arranged symmetrically up and down, and the number of the second sliding bars is six and arranged symmetrically up and down.

The beneficial effect of adopting the above further solution is that the clamping plate is supported to prevent the clamping plate from shaking up and down.

Description of drawings

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

Fig. 2 is a top view sectional view of the structure of the utility model;

Fig. 3 is the enlarged view of the structure at A place of the utility model;

Figure 4 is an enlarged view of the structure at B of the utility model.

In the figure: 1, bottom plate; 2, through hole; 3, rotating shaft; 4, hydraulic push rod; 5, U-shaped plate; 6, mounting plate; 7, first slide bar; 8, second slide bar; 9, clip Holding plate; 10, middle plate; 11, adjusting bolt; 12, spring; 13, slider; 14, chute; 15, square hole; 16, external rocker.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the embodiment, as shown in Figures 1-4, a workpiece fixing device for machine tools, the utility model includes a base plate 1, the right side of the base plate 1 is provided with a through hole 2 that runs through the entire base plate 1, and a rotating shaft is arranged in the through hole 2 3. A hydraulic push rod 4 is fixedly connected to the top of the bottom plate 1, and the hydraulic push rod 4 is symmetrically arranged on the left and right. The left side of the hydraulic push rod 4 is fixedly connected to a U-shaped plate 5, and the top wall and bottom wall of the inner cavity of the U-shaped plate 5 The same mounting plate 6 is fixedly connected between them, the right side of the mounting plate 6 is plugged with a first slide bar 7, the left side of the first slide bar 7 is fixedly connected with an intermediate plate 10, and the right side of the mounting plate 6 is plugged with a The second slide bar 8, the left side of the second slide bar 8 is fixedly connected with a clamping plate 9, the right side of the mounting plate 6 is threadedly connected with an adjusting bolt 11, and the clamping plate 9 and the middle plate 10 are fixedly connected with the same The spring 12 is threaded on the outside of the rotating shaft 3 with a slider 13, the number of the sliders 13 is two and symmetrically arranged, and the top of the bottom plate 1 is provided with a chute 14;

The chute 14 is left-right symmetrically arranged, and the right side of the slide block 13 is in contact with the left side of the U-shaped plate 5;

It is convenient for the slider 13 to slide in the chute 14, and at the same time, the slider 13 can be used as a limit block to limit the maximum position of the hydraulic push rod 4 and control the entire clamping force of the device;

The outer side of the rotating shaft 3 is provided with left and right symmetrical external threads, and the external threads are arranged left and right symmetrically and the left and right threads are opposite in direction of rotation;

When the rotating shaft 3 is rotated, the external threads in the opposite direction will make the left and right side sliders 13 matched with it move closer or farther away from each other;

The left end of the rotating shaft 3 is provided with a square hole 15, and an external rocker 16 can be plugged into the square hole 15;

It is convenient to rotate the rotating shaft 3 to achieve the purpose of adjusting the position of the slider 13;

The number of springs 12 is six and arranged symmetrically up and down, and the left side of the clamping plate 9 is fixedly connected with an anti-slip rubber pad;

Multiple springs 12 cooperate with each other to increase the clamping force and prevent the clamping force of the device from being reduced due to the setting of the springs 12. At the same time, the anti-slip rubber pad has a large friction force, which can prevent the workpiece from slipping during processing;

The number of first slide bars 7 is six and arranged symmetrically up and down, and the number of second slide bars 8 is six and arranged symmetrically up and down;

A plurality of slide bars cooperate with each other to support the clamping plate 9 , prevent the clamping plate 9 from shaking up and down, and fix the relative positions of the clamping plate 9 and the mounting plate 6 in the up-down direction.

working principle:

Step 1: Insert the external rocker 16 into the square hole 15, shake the external rocker 16, and the force of shaking the external rocker 16 will drive the rotating shaft 3 to rotate. During the rotation of the rotating shaft 3, the rotation direction of the outer side of the rotating shaft 3 The opposite external thread will make the slider 13 compatible with the external thread close to each other. According to the specifications of the workpiece, after the slider 13 is moved to the required position, the external rocker 16 can be removed to make the hydraulic push rod 4 work. ;

The second step: when the hydraulic push rod 4 is in operation, the U-shaped plate 5 will be moved closer to the middle, and the U-shaped plate will drive the mounting plate 6 to move closer to the middle, and the middle plate 10 will push the clamping plate 9 to move closer to each other to achieve clamping. The purpose of tightening the workpiece is that when the U-shaped plate 5 contacts the slider 13, the hydraulic push rod 4 stops operating, the workpiece will be clamped, and the clamping force will overcome the elastic force of the spring 12, so that the clamping plate 9 moves outward A certain distance, and the second slide bar 8 will also be pushed to slide outward, at this time, the clamping force can be fine-tuned by turning the adjusting bolt 11;

Step 3: After the hydraulic push rod 4 stops operating, turn the adjusting bolt 11, tighten the adjusting bolt 11, the adjusting bolt 11 will push the middle plate 10 closer to the middle, further compress the spring 12, and the spring 12 will be under the action of the elastic force Push the clamping plate 9 closer to the middle, and at the same time drive the second slide bar 8 closer to the middle, thereby increasing the clamping force, and loosening the adjusting bolt 11 will reduce the clamping force.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A workpiece fixture for a machine tool, comprising a base plate (1), characterized in that: the right side of the base plate (1) is provided with a through hole (2) that runs through the entire base plate (1), and the through hole (2) ) is provided with a rotating shaft (3), the top of the bottom plate (1) is fixedly connected with a hydraulic push rod (4), and the hydraulic push rod (4) is left and right symmetrically arranged, and the left side of the hydraulic push rod (4) The side is fixedly connected with a U-shaped plate (5), and the same mounting plate (6) is fixedly connected between the inner cavity top wall and the bottom wall of the U-shaped plate (5), and the right side of the mounting plate (6) A first slide bar (7) is plugged in, the left side of the first slide bar (7) is fixedly connected with an intermediate plate (10), and the right side of the mounting plate (6) is plugged with a second slide bar ( 8), the left side of the second slide bar (8) is fixedly connected with a clamping plate (9), the right side of the mounting plate (6) is threadedly connected with an adjusting bolt (11), and the clamping plate ( 9) The same spring (12) is fixedly connected with the middle plate (10), and the outer thread of the rotating shaft (3) is connected with a slider (13), and the number of the sliders (13) is two and It is symmetrically arranged left and right, and a slide groove (14) is opened on the top of the bottom plate (1). 2. A kind of workpiece fixing device for machine tools according to claim 1, characterized in that: the chute (14) is left-right symmetrically arranged, and the right side of the slide block (13) is in contact with the U-shaped plate (5) left contact. 3. A workpiece fixing device for machine tools according to claim 1, characterized in that: external threads are provided on the outer side of the rotating shaft (3), and the external threads are symmetrically arranged on the left and right sides and the left and right threads are opposite in direction of rotation . 4. A workpiece fixing device for machine tools according to claim 1, characterized in that: the left end of the rotating shaft (3) is provided with a square hole (15), and an external rocker can be plugged into the square hole (15). rod (16). 5. A workpiece fixing device for a machine tool according to claim 1, characterized in that: the number of the springs (12) is six and arranged symmetrically up and down, and the left side of the clamping plate (9) is fixed Attached with non-slip rubber pads. 6. A workpiece fixing device for machine tools according to claim 1, characterized in that: the number of the first slide bars (7) is six and symmetrically arranged up and down, and the second slide bars (8) The quantity is six and is arranged symmetrically up and down.

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