CN107225416B - Positioning fixture and fixture system of numerical control machine tool - Google Patents

Abstract

The invention provides a CNC machine tool positioning fixture and a fixture system, which belong to the technical field of data machine tools. It includes a positioning base plate, a first slot plate, a first clamping mechanism and a positioning plate; a positioning hole is provided on the positioning base plate, the positioning base plate has opposite first side ends and second side ends, and the first slot plate is installed on the first On the side end; the first slot plate has a first positioning groove, the opening of the first positioning groove faces the second side end; the first clamping mechanism includes a plurality of first positioning pins and a plurality of first clamps, the first clamp One end of the tightener is slidably connected in the first positioning groove, and the first positioning pin is detachably installed in the positioning hole; the positioning plate is installed on the positioning base plate, and the length extension direction of the positioning plate is parallel to the length extension direction of the positioning plate. . The fixture system with the above-mentioned CNC machine tool positioning fixture has a simple structure and can be adapted to clamp various types of workpieces.

Description

A CNC machine tool positioning fixture and fixture system

Technical field

The invention relates to the technical field of CNC machine tools, and in particular to a CNC machine tool positioning fixture and a fixture system.

Background technique

CNC machine tools are widely used in the machinery manufacturing industry. In order to meet a variety of processing needs, a CNC machine tool is equipped with multiple sets of fixtures to meet various types of parts processing. When the workpiece is processed on the CNC machine tool, the workpiece is fixed on the workbench. After the CNC machine tool's fixture has finished processing one type of workpiece, when another type of workpiece needs to be processed, the CNC machine tool starts to change the fixture and then processes another type of workpiece. A type of artifact.

Generally, different fixtures need to be replaced after processing different workpieces, which is not only time-consuming and labor-intensive, but also increases investment costs. At present, the fixtures of CNC machine tools are installed on the workbench using screws or bolts. The installation is time-consuming and laborious, the installation accuracy is difficult to guarantee, and it is inconvenient to replace.

Therefore, designing a CNC machine tool fixture with simple structure and wide applicability is of great practical significance to the machine tool processing industry.

Contents of the invention

One of the objects of the present invention is to provide a CNC machine tool positioning fixture. This CNC machine tool positioning fixture is intended to solve the problem in the prior art that the fixture needs to be replaced when processing different types of workpieces;

Another object of the present invention is to provide another CNC machine tool positioning fixture. This CNC machine tool positioning fixture is intended to solve the problem in the prior art that the fixture needs to be replaced when processing different types of workpieces.

In order to achieve the above objects, the technical solution of the present invention is:

A CNC machine tool positioning fixture, which includes a positioning bottom plate, a first groove plate, a first clamping mechanism and a positioning plate;

A plurality of positioning holes are evenly spaced on the positioning base plate, the positioning base plate has opposite first and second side ends, and the first groove plate is installed on the first side end;

The first groove plate includes a first side wall, an opposite first top wall and a first bottom wall. The first groove plate has a first positioning groove. Both ends of the first side wall are respectively connected with the first positioning groove. A top wall and the first bottom wall are fixedly connected, the first side wall, the first top wall and the first bottom wall together form the first positioning groove, and the opening of the first positioning groove Toward the second side end;

The first clamping mechanism includes a plurality of first positioning pins and a plurality of first clamps. One end of the first clamps is slidably connected in the first positioning groove. The first positioning The pin is detachably installed in the positioning hole;

The positioning plate is installed on the positioning bottom plate, and the length extension direction of the positioning plate is parallel to the length extension direction of the positioning bottom plate.

As a preferred technical solution of the present invention, the CNC machine tool positioning fixture includes a second groove plate and a second clamping mechanism, and the second groove plate is installed on the second side end;

The second groove plate includes a second side wall, an opposite second top wall and a second bottom wall. The second groove plate has a second positioning groove. The two ends of the second side wall are respectively connected with the second positioning groove. The two top walls and the second bottom wall are fixedly connected, the second side wall, the second top wall and the second bottom wall together form the second positioning groove, and the opening of the second positioning groove Toward the first side end;

The second clamping mechanism includes a plurality of second positioning pins and a plurality of second clamps. One end of the second clamps is slidably connected in the second positioning groove. The second positioning A pin is detachably mounted in the positioning hole.

As a preferred technical solution of the present invention, the first clamp includes a first internally threaded clamping seat, a first locking bolt and a first locking nut, and the first internally threaded clamping seat can slide Installed in the first positioning groove, one end of the first locking bolt is installed in the first internal thread clamping seat through the first locking nut.

As a preferred technical solution of the present invention, the second clamp includes a second internally threaded clamping seat, a second locking bolt and a second locking nut, and the second internally threaded clamping seat can slide Installed in the second positioning groove, one end of the second locking bolt is installed in the second internal thread clamping seat through the second lock nut.

As a preferred technical solution of the present invention, both ends of the positioning plate are respectively installed on the positioning base plate through the first positioning pin and the second positioning pin.

As a preferred technical solution of the present invention, the first positioning pin and the second positioning pin are on the same straight line.

As a preferred technical solution of the present invention, the first positioning pin is close to the first clamping mechanism, and the second positioning pin is close to the second clamping mechanism.

As a preferred technical solution of the present invention, a first dovetail groove is provided on the first side end, and a first slider matching the first dovetail groove is provided on the first bottom wall. The first groove plate is connected to the first side end by installing the first slide block in the first dovetail groove.

As a preferred technical solution of the present invention, a second dovetail groove is provided on the second side end, and a second slider matching the second dovetail groove is provided on the second bottom wall. The second groove plate is connected to the second side end by installing the second slide block in the second dovetail groove.

A clamping system, the clamping system includes a first workpiece, a second workpiece and the above-mentioned CNC machine tool positioning fixture, the first workpiece is installed on the positioning bottom plate near the first side end, the third workpiece A workpiece has adjacent first, second and third sides, the other end of the first clamp is in contact with the first side, and the first positioning pin is in contact with the second side. , one side of the positioning plate is in contact with the third side, and the second workpiece is installed on the positioning base plate near the second side end.

The beneficial effects of the present invention are:

The present invention provides a CNC machine tool positioning fixture through the above design. The CNC machine tool positioning fixture has a positioning base plate, a first groove plate, a first clamping mechanism and a positioning plate. The positioning base plate is provided with a plurality of evenly spaced multiple positions. A positioning hole, at the same time, a plurality of first positioning pins and a plurality of second positioning pins are detachably installed in the positioning hole. A positioning plate, a first clamping mechanism and a second clamping mechanism are also installed on the positioning bottom plate. Therefore, With the cooperation of the above, workpieces of different sizes can be fixedly installed on the positioning base plate, so that there is no need to replace the fixture when processing workpieces of different sizes; at the same time, because the first clamp can be in the first positioning groove Sliding, the second clamp can slide in the second positioning groove, so it can be adjusted according to different positions of different workpieces, thereby matching the different processing positions of different workpieces and playing a better clamping and fixing role. , this structure makes it possible to determine the distance between workpieces in the horizontal direction without measuring; and the use of the positioning plate allows the workpieces that need to be positioned to be fixed in the longitudinal direction. In addition, since the first groove plate is connected to the first side end by installing the first slider in the first dovetail groove, the second groove plate is connected to the second side end by installing the second slider in the second dovetail groove. , therefore, the first groove plate and the second groove plate can be easily installed on the positioning bottom plate, and at the same time, they can also be easily removed from them. It can be seen from the above that the CNC machine tool positioning fixture not only has a simple structure and low investment cost, but also has the characteristics of convenient installation and adaptability to different types of workpieces.

The present invention provides a clamp system through the above design. The first workpiece and the second workpiece of the clamp system can be conveniently installed on the positioning base plate through the above-mentioned CNC machine tool positioning fixture. The structure is simple and the cost is low. It is easy to install and has a wide range of applications.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a CNC machine tool positioning fixture provided by the first embodiment of the present invention;

Figure 2 is a first angle view of the CNC machine tool positioning fixture provided by the first embodiment of the present invention;

Figure 3 is a second angle view of the CNC machine tool positioning fixture provided by the first embodiment of the present invention;

Figure 4 is a schematic structural diagram of the first groove plate provided by the first embodiment of the present invention;

Figure 5 is a schematic structural diagram of the second groove plate provided by the first embodiment of the present invention;

Figure 6 is a schematic diagram of the connection structure between the first groove plate and the positioning bottom plate provided by the first embodiment of the present invention;

Figure 7 is a schematic diagram of the connection structure between the second groove plate and the positioning bottom plate provided by the first embodiment of the present invention;

Figure 8 is a schematic structural diagram of a clamp system provided by the second embodiment of the present invention.

Icon: 1-CNC machine tool positioning fixture; 2-positioning bottom plate; 3-first slot plate; 4-first clamping mechanism; 5-positioning plate; 6-positioning hole; 7-first side end; 8-second Side end; 9-first side wall; 10-first top wall; 11-first bottom wall; 12-first positioning groove; 13-first positioning pin; 14-first clamp; 15-second Groove plate; 16-second clamping mechanism; 17-second side wall; 18-second top wall; 19-second bottom wall; 20-second positioning groove; 21-second positioning pin; 22-second Clamp; 23-first internal thread clamping seat; 24-first locking bolt; 25-first lock nut; 26-second internal thread clamping seat; 27-second locking bolt; 28- The second locking nut; 29-the first dovetail groove; 30-the first slide block; 31-the second dovetail groove; 32-the second slide block; 33-the first workpiece; 34-the second workpiece; 35-clamp system ;36-First side; 37-Second side; 38-Third side; 39-Fourth side; 40-Fifth side; 41-Sixth side.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 These are some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but rather to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or is the habitually placed position when the product of the invention is used. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, in the present invention, unless otherwise expressly provided and limited, the first feature above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact. contact but through additional characteristic contact between them. Furthermore, the first feature on, above and above the second feature includes the first feature directly above and diagonally above the second feature, or simply means that the first feature is higher level than the second feature. The first feature below, below and below the second feature includes the first feature directly below and diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In addition, the terms "horizontal", "vertical", etc. do not mean that the component is required to be absolutely horizontal or suspended, but may be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical". It does not mean that the structure must be completely horizontal, but can be slightly tilted.

In the description of the present invention, it should also be noted that, unless otherwise clearly stated and limited, the terms "set", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

First embodiment:

Please refer to Figure 1, together with Figures 2 to 7, this embodiment provides a CNC machine tool positioning fixture 1, which is mainly used for workpiece processing on CNC machine tools to solve the problem of inaccurate positioning during workpiece processing and the need to replace it when processing different workpieces. Issues with different fixtures.

The CNC machine tool positioning fixture 1 includes a positioning base plate 2, opposite first and second groove plates 3 and 15, oppositely arranged first and second clamping mechanisms 4 and 16, and a positioning plate 5. The positioning base plate 2 has an opposite The first side end 7 and the second side end 8.

Please refer to Figures 4 and 5, and with reference to Figure 1, the first groove plate 3 is installed on the first side end 7. The first groove plate 3 includes a first side wall 9, an opposite first top wall 10 and a first bottom. wall 11, and the first groove plate 3 has a first positioning groove 12. Both ends of the first side wall 9 are fixedly connected to the first top wall 10 and the first bottom wall 11 respectively. The first side wall 9 and the first top wall 10 and the first bottom wall 11 together form a first positioning groove 12, and the opening of the first positioning groove 12 faces the second side end 8.

The second groove plate 15 is installed on the second side end 8. The second groove plate 15 includes a second side wall 17, an opposite second top wall 18 and a second bottom wall 19. At the same time, the second groove plate 15 has a second positioning In the groove 20, both ends of the second side wall 17 are fixedly connected to the second top wall 18 and the second bottom wall 19 respectively. The second side wall 17, the second top wall 18 and the second bottom wall 19 together form a second positioning groove. 20. The opening of the second positioning groove 20 faces the first side end 7 .

Please refer to Figure 3, and with reference to Figure 1, the first clamping mechanism 4 includes a plurality of first positioning pins 13 and a plurality of first clamps 14. One end of the first clamps 14 can be slidably connected to the first positioning pin. in the groove 12; the second clamping mechanism 16 includes a plurality of second positioning pins 21 and a plurality of second clamps 22, one end of the second clamp 22 can be slidably connected in the second positioning groove 20; the positioning bottom plate 2 is provided with a plurality of positioning holes 6 at even intervals, and the first positioning pins 13 and the second positioning pins 21 are detachably installed in the positioning holes 6 . The positioning plate 5 is installed on the positioning base plate 2 through bolts or the above-mentioned first positioning pins 13 and second positioning pins 21 . The length extension direction of the positioning plate 5 is parallel to the length extension direction of the positioning base plate 2 .

The first clamp 14 includes a first internally threaded clamping seat 23, a first locking bolt 24 and a first locking nut 25. The first internally threaded clamping seat 23 is slidably installed in the first positioning groove 12, One end of the first locking bolt 24 is installed in the first internal thread clamping seat 23 through the first locking nut 25 .

The second clamp 22 includes a second internally threaded clamping seat 26, a second locking bolt 27 and a second locking nut 28. The second internally threaded clamping seat 26 is slidably installed in the second positioning groove 20. One end of the second locking bolt 27 is installed in the second internal thread clamping seat 26 through the second locking nut 28 .

When it is necessary to clamp the workpiece, you can directly use a wrench to turn the tightening knobs on the first locking bolt 24 and the second locking bolt 27 to clamp them, and then turn the first locking nut 25 and the second locking nut 25 after clamping. The two locking nuts 28 are in close contact with the internal thread surface, thereby preventing the first locking bolt 24 and the second locking bolt 27 from loosening, thus ensuring reliable clamping of the workpiece; in addition, in the first When the lengths of the clamp 14 and the second clamp 22 are not appropriate, the entire first clamp 14 and the second clamp can be adjusted by adjusting the first locking bolt 24 and the second locking bolt 27. The length of the tool 22 is such that it cooperates with the workpiece for clamping.

Please refer to Figures 6 and 7, and with reference to Figure 1, the first side end 7 is provided with a first dovetail groove 29, and the first bottom wall 11 is provided with a first slider 30 that matches the first dovetail groove 29. A groove plate 3 is connected to the first side end 7 by installing the first slider 30 in the first dovetail groove 29 .

The second side end 8 is provided with a second dovetail groove 31 , the second bottom wall 19 is provided with a second slider 32 that matches the second dovetail groove 31 , and the second groove plate 15 is installed by installing the second slider 32 It is connected to the second side end 8 in the second dovetail groove 31 .

Second embodiment:

Please refer to FIG. 8 in conjunction with FIG. 1 . This embodiment provides a fixture system 35 , which includes a first workpiece 33 , a second workpiece 34 and the above CNC machine tool positioning fixture 1 .

The first workpiece 33 is installed on the positioning base plate 2 near the first side end 7 . The first workpiece 33 has adjacent first side 36 , second side 37 and third side 38 . The other end of the first clamp 14 is connected to the first side 7 of the first workpiece 33 . One side 36 is in contact, the first positioning pin 13 is in contact with the second side 37 , and one side of the positioning plate 5 is in contact with the third side 38 .

The second workpiece 34 is installed on the positioning base plate 2 near the second side end 8 . The second workpiece 34 has adjacent fourth sides 39 , fifth sides 40 and sixth sides 41 . The other end of the second clamp 22 is connected to the second side end 8 . The four sides 39 are in contact, the second positioning pin 21 is in contact with the fifth side 40 , and one side of the positioning plate 5 is in contact with the sixth side 41 .

As can be seen from the above, the first workpiece 33 and the second workpiece 34 of the fixture system 35 and the above CNC machine tool positioning fixture 1 have a plurality of positioning holes 6 arranged at even intervals on the positioning bottom plate 2. At the same time, the positioning holes 6 A plurality of first positioning pins 13 and a plurality of second positioning pins 21 are detachably installed in the positioning base plate 2. A positioning plate 5, a first clamping mechanism 4 and a second clamping mechanism 16 are also installed on the positioning bottom plate 2. Therefore, in the above With the cooperation of these two, workpieces of different sizes can be fixedly installed on the positioning base plate 2, so that there is no need to change the fixture when processing workpieces of different sizes. At the same time, since the first clamp 14 can slide in the first positioning groove 12 and the second clamp 22 can slide in the second positioning groove 20, they can be adjusted according to different positions of different workpieces to match Different processing positions of different workpieces play a better role in clamping and fixing them. In addition, since the first groove plate 3 is connected to the first side end 7 by installing the first slider 30 in the first dovetail groove 29, the second groove plate 15 is connected by installing the second slider 32 in the second dovetail groove 31. The middle is connected with the second side end 8. Therefore, the first groove plate 3 and the second groove plate 15 can be easily installed on the positioning bottom plate 2, and at the same time, they can also be easily removed from them. It can be seen from the above that the fixture system 35 is not only simple in structure and low in cost, but also has the characteristics of easy installation and adaptability to different types of workpieces; at the same time, it does not need to measure the distance when loading the workpieces, which is convenient for programming and can also reduce the number of CNC machine tools. The operating steps facilitate batch processing and greatly reduce the number of fixtures used.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A CNC machine tool positioning fixture, characterized in that: the CNC machine tool positioning fixture includes a positioning bottom plate, a first groove plate, a first clamping mechanism and a positioning plate; A plurality of positioning holes are evenly spaced on the positioning base plate, the positioning base plate has opposite first and second side ends, and the first groove plate is installed on the first side end; The first groove plate includes a first side wall, an opposite first top wall and a first bottom wall. The first groove plate has a first positioning groove. Both ends of the first side wall are respectively connected with the first positioning groove. A top wall and the first bottom wall are fixedly connected, the first side wall, the first top wall and the first bottom wall together form the first positioning groove, and the opening of the first positioning groove Toward the second side end; The first clamping mechanism includes a plurality of first positioning pins and a plurality of first clamps. One end of the first clamps is slidably connected in the first positioning groove. The first positioning The pin is detachably installed in the positioning hole; The positioning plate is installed on the positioning base plate, and the length extension direction of the positioning plate is parallel to the length extension direction of the positioning base plate; the CNC machine tool positioning fixture includes a second groove plate and a second clamping mechanism, so The second groove plate is installed on the second side end; The second groove plate includes a second side wall, an opposite second top wall and a second bottom wall. The second groove plate has a second positioning groove. The two ends of the second side wall are respectively connected with the second positioning groove. The two top walls and the second bottom wall are fixedly connected, the second side wall, the second top wall and the second bottom wall together form the second positioning groove, and the opening of the second positioning groove Toward the first side end; The second clamping mechanism includes a plurality of second positioning pins and a plurality of second clamps. One end of the second clamps is slidably connected in the second positioning groove. The second positioning The pin is detachably installed in the positioning hole; The first clamp includes a first internally threaded clamping seat, a first locking bolt and a first locking nut, and the first internally threaded clamping seat is slidably installed in the first positioning groove, One end of the first locking bolt is installed in the first internal thread clamping seat through the first locking nut. 2. The CNC machine tool positioning fixture according to claim 1, characterized in that: the second clamp includes a second internal thread clamping seat, a second locking bolt and a second locking nut, and the second The internal thread clamping seat is slidably installed in the second positioning groove, and one end of the second locking bolt is installed in the second internal thread clamping seat through the second lock nut. 3. The CNC machine tool positioning fixture according to claim 1, characterized in that: both ends of the positioning plate are installed on the positioning bottom plate through the first positioning pin and the second positioning pin respectively. 4. The CNC machine tool positioning fixture according to claim 1, characterized in that: the first positioning pin and the second positioning pin are on the same straight line. 5. The CNC machine tool positioning fixture according to claim 1, wherein the first positioning pin is close to the first clamping mechanism, and the second positioning pin is close to the second clamping mechanism. 6. The CNC machine tool positioning fixture according to claim 1, characterized in that: a first dovetail groove is provided on the first side end, and a first dovetail groove is provided on the first bottom wall to match the first dovetail groove. The first slider is connected to the first side end by installing the first slider in the first dovetail groove. 7. The CNC machine tool positioning fixture according to claim 1, characterized in that: a second dovetail groove is provided on the second side end, and a second dovetail groove is provided on the second bottom wall to match the second dovetail groove. The second slide block is connected to the second side end by installing the second slide block in the second dovetail groove. 8. A clamping system, characterized in that: the clamping system includes a first workpiece, a second workpiece and the CNC machine tool positioning fixture according to any one of claims 1 to 7, and the first workpiece is installed on the positioning fixture. The bottom plate is close to the first side end, the first workpiece has an adjacent first side, a second side and a third side, and the other end of the first clamp is in contact with the first side, so The first positioning pin is in contact with the second side, one side of the positioning plate is in contact with the third side, and the second workpiece is installed on the positioning bottom plate near the second side end.