Programmable positioning tool clamp

Abstract

The utility model relates to the technical field of tool clamps, in particular to a programmable positioning tool clamp which comprises a base, a fixing frame is arranged at the top of the base, a first positioning rod and a second positioning rod are movably installed in the fixing frame, and a tool positioning plate and an air cylinder are further arranged on the base. The power output of the air cylinder is connected with the first positioning rod and the second positioning rod, and the first positioning rod and the second positioning rod can penetrate through the fixing frame to move towards the position where the tool positioning plate is located. Grooves are formed in the ends of the first positioning rod and the second positioning rod correspondingly, ball heads are rotationally installed in the grooves, and rubber pads are fixedly connected to the ball heads through buffer assemblies. The clamping device has the beneficial effects that the first positioning rod and the second positioning rod can obtain different displacement distances through the slope structure on the adjusting plate, and therefore clamping and fixing of workpieces with irregular areas are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling fixtures, in particular to a programmable positioning tooling fixture. Background Art

[0002] In the field of mechanical processing, it is often necessary to perform deep processing on workpieces of various shapes. Among the currently available tooling fixtures, the most common ones can be divided into three-jaw fixtures, right-angle fixtures or cylindrical fixtures. These fixtures can only clamp some workpieces with relatively regular shapes during the engineering process. When facing some workpieces with unconventional shapes, the clamping effect is often poor.

[0003] In order to address the above problems, a programmable positioning fixture is urgently needed. Summary of the Invention

[0004] The object of the present invention is to provide a programmable positioning fixture to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, a programmable positioning fixture is provided, comprising a base, a fixed frame is provided on the top of the base, a first positioning rod and a second positioning rod are movably installed in the fixed frame, a tool positioning plate and a cylinder are also provided on the base, the cylinder power output is connected to the first positioning rod and the second positioning rod, and the first positioning rod and the second positioning rod can pass through the fixed frame and move to the position of the tool positioning plate;

[0006] The ends of the first positioning rod and the second positioning rod are both provided with grooves, in which ball heads are rotatably mounted, and the ball heads are fixedly connected to rubber pads via buffer components;

[0007] The first positioning rod and the second positioning rod can realize asynchronous motion under the action of the cylinder. The asynchronous motion here means that the displacement distances of the first positioning rod and the second positioning rod are different, so that the irregular surface area can be fixed.

[0008] Furthermore, the interior of the fixed frame includes a first active cavity and a second active cavity, and the first active cavity and the second active cavity are connected to each other. The first positioning rod and the second positioning rod are movable in the first active cavity, and a push plate and an adjustment plate are movably installed in the second active cavity. One side of the push plate is fixedly connected to the output end of the cylinder, and the other side of the push plate is in contact with the adjustment plate.

[0009] Furthermore, the two ends of the adjustment plate are respectively connected to the first positioning rod and the second positioning rod through an inclined plane, and the adjustment plate, the first positioning rod and the second positioning rod are all provided with a sliding groove, wherein the sliding groove on the adjustment plate is arranged longitudinally, and the sliding grooves on the first positioning rod and the second positioning rod are arranged transversely, the propulsion direction of the cylinder is transverse, and a fixing pin is provided in the sliding groove.

[0010] Furthermore, the fixing pins are respectively installed on the top of the base and the push plate. A support plate for supporting the adjustment plate is provided on one side where the push plate is connected to the adjustment plate. The adjustment plate can slide longitudinally on the push plate through the slide groove and the fixing pins.

[0011] Furthermore, a partition plate is provided on the top of the base, and the partition plate is located between the first positioning rod and the second positioning rod.

[0012] Furthermore, a cover plate is fixedly installed on the top of the fixing frame by bolts, and the cover plate is made of a transparent acrylic plate.

[0013] Furthermore, the buffer assembly includes a telescopic tube and a spring. The telescopic tube is composed of an inner tube and an outer tube that are plugged together. The spring is installed in the telescopic tube. Both ends of the spring are fixedly connected to a ball head and a rubber pad respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Since the two ends of the adjustment plate are movably connected with the first positioning rod and the second positioning rod by setting an inclined structure, the adjustment plate can slide longitudinally during operation, which enables the first positioning rod and the second positioning rod to obtain different displacement distances, thereby achieving clamping and fixation of workpieces with irregular surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is an exploded view of the structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the working state of the present invention;

[0019] Figure 4 Schematic diagram of the internal structure of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the push plate and the adjustment plate in the present invention;

[0021] Figure 6 It is a structural schematic diagram of the fixing frame in the present invention;

[0022] Figure 7 For the present invention Figure 4 A magnified view of the structure of part A.

[0023] The meaning of each number in the figure is:

[0024] 1. Base; 2. Fixed frame; 201. First movable cavity; 202. Second movable cavity; 3. First positioning rod; 4. Second positioning rod; 5. Tool positioning plate; 6. Cylinder; 7. Ball head; 8. Buffer assembly; 801. Telescopic tube; 802. Spring; 9. Rubber pad; 10. Push plate; 11. Adjustment plate; 12. Inclined surface; 13. Slide groove; 14. Fixing pin; 15. Partition plate; 16. Cover plate; 17. Groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a," "an," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0027] See also Figure 1-Figure 7 As shown, a programmable positioning fixture is provided, comprising a base 1, a fixed frame 2 is provided on the top of the base 1, a first positioning rod 3 and a second positioning rod 4 are movably installed in the fixed frame 2, a tool positioning plate 5 and a cylinder 6 are also provided on the base 1, and the power output of the cylinder 6 is connected to the first positioning rod 3 and the second positioning rod 4, and the first positioning rod 3 and the second positioning rod 4 can pass through the fixed frame 2 and move to the position of the tool positioning plate 5;

[0028] The ends of the first positioning rod 3 and the second positioning rod 4 are both provided with a groove 17, in which a ball head 7 is rotatably mounted, and a rubber pad 9 is fixedly connected to the ball head 7 via a buffer assembly 8;

[0029] The first positioning rod 3 and the second positioning rod 4 can realize asynchronous motion under the action of the cylinder 6. The asynchronous motion here means that the displacement distances of the first positioning rod 3 and the second positioning rod 4 are different, so that the irregular surface area can be fixed.

[0030] It is worth noting that a concave workpiece fixing groove is also provided on the surface of the base 1 .

[0031] like Figure 1 and Figure 2 As shown:

[0032] The interior of the fixed frame 2 includes a first movable cavity 201 and a second movable cavity 202, and the first movable cavity 201 and the second movable cavity 202 are connected to each other. The first positioning rod 3 and the second positioning rod 4 are movable in the first movable cavity 201, and the push plate 10 and the adjustment plate 11 are movably installed in the second movable cavity 202. One side of the push plate 10 is fixedly connected to the output end of the cylinder 6, and the other side of the push plate 10 is in contact with the adjustment plate 11; please refer to Figure 4 It is worth noting that the push plate 10 is a stepped structure, wherein the adjustment plate 11 is mounted on the step on the shorter side of the push plate 10;

[0033] The two ends of the adjustment plate 11 are respectively connected to the first positioning rod 3 and the second positioning rod 4 through an inclined surface 12. The adjustment plate 11, the first positioning rod 3 and the second positioning rod 4 are all provided with a sliding groove 13, wherein the sliding groove 13 on the adjustment plate 11 is arranged longitudinally, and the sliding groove 13 on the first positioning rod 3 and the second positioning rod 4 is arranged transversely. The propulsion direction of the cylinder 6 is transverse, and a fixing pin 14 is provided in the sliding groove 13;

[0034] Please refer to Figure 2 and Figure 3 From here we can see that since the workpiece has an irregular structure, the first positioning rod 3 will be contacted and fixed first. At this time, the first positioning rod 3 is blocked by the workpiece and cannot move. Therefore, under the action of the inclined surface 12, the adjustment plate 11 moves longitudinally and pushes the second positioning rod 4 to move.

[0035] like Figure 2 As shown:

[0036] The fixing pins 14 are respectively installed on the top of the base 1 and the push plate 10. A support plate for supporting the adjustment plate 11 is provided on one side of the push plate 10 connected to the adjustment plate 11. The adjustment plate 11 can slide longitudinally on the push plate 10 through the slide groove 13 and the fixing pins 14. Figure 2 In the embodiment, all the fixing pins 14 are fixed, while the first positioning rod 3, the second positioning rod 4 and the push plate 10 can move laterally, and the adjustment plate 11 can move laterally under the action of the push plate 10, and can also move longitudinally due to the action of the inclined surface 12;

[0037] It is worth noting that a partition plate 15 is also provided on the top of the base 1, and the partition plate 15 is located between the first positioning rod 3 and the second positioning rod 4. By setting the partition plate 15, the displacement of the first positioning rod 3 and the second positioning rod 4 can be better limited; a cover plate 16 is fixed on the top of the fixed frame 2 by bolts, and the cover plate 16 is made of a transparent acrylic plate, and the transparent cover plate 16 can be easily inspected.

[0038] like Figure 7 As shown:

[0039] The buffer assembly 8 includes the telescopic tube 801 and the spring 802. The telescopic tube 801 is composed of an inner tube and an outer tube that are plugged in. The spring 802 is installed in the telescopic tube 801. The two ends of the spring 802 are fixedly connected to the ball head 7 and the rubber pad 9 respectively. The ball head 7 can rotate freely at a certain angle when clamping an irregular surface, thereby adjusting the contact area between the rubber pad 9 and the workpiece to achieve better fixation.

[0040] Working process:

[0041] Place the workpiece on the workpiece fixing groove, then start the cylinder 6, which pushes the push plate 10 forward; at this time, the first positioning rod 3 and the second positioning rod 4 move forward synchronously; Figure 3 As shown, as the cylinder 6 is further advanced, the first positioning rod 3 first contacts the workpiece, and then the first positioning rod 3 is blocked by the workpiece and cannot move forward, while the cylinder 6 is still working;

[0042] Since the first positioning rod 3 and the adjustment plate 11 are connected by the inclined surface 12, the adjustment plate 11 will slide with the first positioning rod 3 at the inclined surface 12, that is, the adjustment plate 11 will undergo longitudinal displacement while continuing to move forward; similarly, the adjustment plate 11 and the second positioning rod 4 are also in contact with the inclined surface 12, so the adjustment plate 11 will wedge into the rear of the second positioning rod 4, thereby forcing the second positioning rod 4 to continue to move forward. When the second positioning rod 4 contacts the workpiece, it stops moving, and the workpiece is now firmly fixed in the workpiece fixing groove;

[0043] In the above process, the tooling positioning plate 5 serves as another fixed point of the workpiece and is stationary.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A programmable positioning fixture, comprising a base (1), characterized in that: A fixed frame (2) is provided on the top of the base (1), a first positioning rod (3) and a second positioning rod (4) are movably installed in the fixed frame (2), a tool positioning plate (5) and a cylinder (6) are also provided on the base (1), the cylinder (6) outputs power to connect the first positioning rod (3) and the second positioning rod (4), and the first positioning rod (3) and the second positioning rod (4) can pass through the fixed frame (2) and move to the position of the tool positioning plate (5); The ends of the first positioning rod (3) and the second positioning rod (4) are both provided with a groove (17), a ball head (7) is rotatably mounted in the groove (17), and a rubber pad (9) is fixedly connected to the ball head (7) via a buffer assembly (8).

2. A programmable positioning fixture according to claim 1, characterized in that: The interior of the fixed frame (2) includes a first movable cavity (201) and a second movable cavity (202), and the first movable cavity (201) and the second movable cavity (202) are connected to each other. The first positioning rod (3) and the second positioning rod (4) are movable in the first movable cavity (201). A push plate (10) and an adjustment plate (11) are movably installed in the second movable cavity (202). One side of the push plate (10) is fixedly connected to the output end of the cylinder (6), and the other side of the push plate (10) is in contact with the adjustment plate (11).

3. A programmable positioning fixture according to claim 2, characterized in that: The two ends of the adjustment plate (11) are respectively connected to the first positioning rod (3) and the second positioning rod (4) through inclined surfaces (12). The adjustment plate (11), the first positioning rod (3) and the second positioning rod (4) are all provided with sliding grooves (13), wherein the sliding grooves (13) on the adjustment plate (11) are arranged longitudinally, and the sliding grooves (13) on the first positioning rod (3) and the second positioning rod (4) are arranged transversely. The propulsion direction of the cylinder (6) is transverse, and a fixing pin (14) is provided in the sliding groove (13).

4. A programmable positioning fixture according to claim 3, characterized in that: The fixing pins (14) are respectively installed on the top of the base (1) and the push plate (10). A support plate for supporting the adjustment plate (11) is provided on one side where the push plate (10) is connected to the adjustment plate (11). The adjustment plate (11) can slide longitudinally on the push plate (10) through the slide groove (13) and the fixing pins (14).

5. A programmable positioning fixture according to claim 4, characterized in that: A partition plate (15) is also provided on the top of the base (1), and the partition plate (15) is located between the first positioning rod (3) and the second positioning rod (4).

6. A programmable positioning fixture according to claim 5, characterized in that: A cover plate (16) is fixedly mounted on the top of the fixing frame (2) by means of bolts, and the cover plate (16) is made of a transparent acrylic plate.

7. A programmable positioning fixture according to claim 6, characterized in that: The buffer assembly (8) comprises a telescopic tube (801) and a spring (802), wherein the telescopic tube (801) is composed of an inner tube and an outer tube that are plugged together, and the spring (802) is installed in the telescopic tube (801), and the two ends of the spring (802) are fixedly connected to the ball head (7) and the rubber pad (9), respectively.

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