CN210995988U - Fixtures for CNC machine tools and CNC machine tools - Google Patents

Abstract

The utility model discloses a fixture of a numerically controlled machine tool and a numerically controlled machine tool, wherein the fixture of the numerically controlled machine tool comprises: a base plate; For placing the workpiece, the pressing block assembly includes a first driving device and a pressing block connected with the output shaft of the first driving device, and the first driving device is used for driving the pressing block to approach or away from the fixed The block is used to clamp or loosen the workpiece; the die is fixed in the fixing block, and the die is provided with punching holes for matching with the punch. The utility model realizes the combination of the punching die structure and the CNC fixture, completes the processing in one process without moving the workpiece, shortens the forming process, reduces the clamping error, and improves the processing efficiency.

Description

Fixtures for CNC machine tools and CNC machine tools

technical field

The utility model relates to the field of numerical control, in particular to a fixture of a numerically controlled machine tool and a numerically controlled machine tool.

Background technique

Traditional machining is done by manual operation of ordinary machine tools. During machining, hand-cranked mechanical tools are used to cut metal, and calipers and other tools are used to measure the accuracy of products. Modern industry has already used computer numerically controlled machine tools for operation, and CNC machine tools can automatically process any product directly according to the program pre-programmed by technicians. This is what we call "CNC machining". Numerical control (CNC) is the abbreviation of Computerized Numerical Control. Numerical control technology is a method of using digital information to control the mechanical movement and processing process. Numerical control machining is widely used in any field of mechanical processing, and it is also a tool for mold processing. Development trends and important technical means.

Stamping is a forming and processing method that applies external force to sheets, strips, pipes and profiles by means of presses and dies to cause plastic deformation or separation to obtain workpieces (stampings) of desired shape and size. The die used for stamping is called a stamping die, abbreviated as a die. A die is a special workpiece for batch processing of materials (metal or non-metal) into the required punching parts. There are metal parts punches on the stamping die. The punches are also called punches, upper films, positive films, punching needles, etc. The punches separate or plastically deform the workpiece to obtain the required finished or semi-finished products. Some workpieces not only need to have a stamping and forming structure, but also need to have other CNC machining features, such as milling machine processing. The traditional method is to directly use a stamping die for stamping, and then transfer the workpiece to the next process for CNC processing. Changing the process for forming will increase the clamping error between different processes, resulting in reduced production efficiency and increased process turnover. The number of times increases the problem of sluggish inventory.

Utility model content

The main purpose of the utility model is to provide a fixture for a numerically controlled machine tool and a numerically controlled machine tool, which aims to solve the problem that the existing workpiece needs to be transferred to the next process for CNC machining after the punching process, and the clamping error is large.

In order to achieve the above-mentioned purpose, the fixture of the numerical control machine tool proposed by the present utility model includes:

substrate;

The clamping part includes a pressing block assembly and a fixing block fixed on the base plate, the fixing block is used for placing the workpiece, and the pressing block assembly includes a first driving device and an output shaft connected with the first driving device the pressing block, the first driving device is used to drive the pressing block close to or away from the fixing block to clamp or loosen the workpiece;

The concave die is fixed in the fixing block, and the concave die is provided with punching holes for matching with the punch.

Preferably, the jig of the CNC machine tool further includes an ejection part, the ejection part includes a second driving device and a top block connected with the output shaft of the second driving device, and the top block is used for The workpiece is ejected under the driving of the second driving device.

Preferably, the second driving device is fixed on the bottom of the base plate, and the base plate is provided with a first through hole through which the output shaft of the second driving device passes.

Preferably, the fixture of the CNC machine tool further includes a positioning assembly, the positioning assembly includes a third driving device and a positioning block connected with the output shaft of the third driving device, and the positioning block is provided with a positioning block for accommodating the The positioning groove of the workpiece.

Preferably, the pressing block includes a first pressing block and a second pressing block which are connected to each other, the second pressing block is located between the first pressing block and the fixing block, and the first pressing block is rigid A pressure block, the second pressure block is an elastic pressure block.

Preferably, the pressing block is provided with an escape groove, and the escape groove is used for the punch to pass through to reach the punching hole of the die.

Preferably, the upper surface of the die is flush with the upper surface of the fixing block.

Preferably, the first driving device is fixed on the bottom of the base plate, and the base plate is provided with a second through hole through which the output shaft of the first driving device passes.

Preferably, the number of the clamping parts is multiple.

In addition, the utility model also proposes a numerically controlled machine tool, which includes a base frame, a tool holder, a punch and the above-mentioned fixture of the numerically controlled machine tool, wherein the tool holder and the numerically controlled machine tool holder are both mounted on the base frame, The punch is detachably mounted on the end of the handle.

In the technical solution of the present utility model, the clamping part includes a pressing block assembly and a fixing block fixed on the base plate, and the pressing block assembly includes a first driving device and a pressing block connected with the output shaft of the first driving device, The workpiece is placed on the fixed block, and the die is fixed in the fixed block. When the workpiece needs to be processed, the first driving device drives the pressing block to move in the direction of the fixed block until the workpiece is clamped, and then controls the punch to carry out the workpiece. Stamping, the punch reaches the punching hole of the die, and at the same time the punch presses the workpiece to deform and stamp, and then perform other CNC precision machining on the workpiece, such as milling machine processing. Of course, the order of punching and other CNC precision machining can be reversed. The utility model realizes the combination of the punching die structure and the CNC fixture, and completes the processing in one process without moving the workpiece, shortens the forming process, reduces the clamping error, and improves the processing efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained based on the structures shown in these drawings without any creative effort.

1 is a schematic structural diagram of a fixture of a numerically controlled machine tool according to an embodiment of the present utility model;

Fig. 2 is the partial structure schematic diagram of the fixture of the numerical control machine tool of the embodiment of the present utility model;

3 is a schematic structural diagram of a fixed block of a fixture of a CNC machine tool according to an embodiment of the present utility model;

4 is a schematic structural diagram of a die of a fixture of a CNC machine tool according to an embodiment of the present utility model;

5 is a schematic structural diagram of a positioning assembly of a fixture of a CNC machine tool according to an embodiment of the present invention.

Description of reference numbers:

The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the difference between the various components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions such as "first", "second", etc. in the present invention are only used for description purposes, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "connection", "fixed" and the like should be understood in a broad sense, for example, "fixed" can be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such technical solutions The combination does not exist and is not within the protection scope required by the present invention.

The "up" and "down" referred to in the utility model are based on the orientation shown in Figure 1, that is, the "up" and "down" referred to in the utility model correspond to the upper and lower positions in Figure 1, and are only used for explanation. In the relative positional relationship between the components in the posture shown in FIG. 1 , if the specific posture changes, the directional indication also changes accordingly.

The utility model provides a fixture for a numerically controlled machine tool, as shown in Figure 1, Figure 2 and Figure 4, comprising:

substrate 1;

The clamping part 2 includes a pressing block assembly 21 and a fixing block 22 fixed on the base plate 1 . The fixing block 22 is used to place the workpiece 6 , and the pressing block assembly 21 includes a first driving device 211 and an output shaft with the first driving device 211 The connected pressure block 212, the first driving device 211 is used to drive the pressure block 212 to approach or move away from the fixed block 22 to clamp or loosen the workpiece 6;

The concave die 3 is fixed in the fixing block 22, and the concave die 3 is provided with a punching hole 31 for matching with the punch.

The fixture of the numerical control machine tool of the present invention can be applied to the processing of the front frame products of the TV set, but is not limited to the above-mentioned products. The bosses of the front frame products need to be stamped from the back and contain other CNC machining features, such as milling. First put the front frame product on the fixing block 22 and the die 3, and then control the first driving device 211 to drive the pressing block 212 to move downward until the pressing block 212 presses the front frame product tightly to prevent the front frame product from moving during processing . Then, the front frame product is punched with a punch, the punch deforms the front frame product, and the punch enters the punching hole 31 of the die 3 . After the stamping is completed, there is no need to move the front frame product and switch other tools for other CNC machining, such as milling cutter machining. The machine tool fixture of the utility model can combine the stamping process with other CNC processing processes (for example, milling machine processing), shorten the forming process, reduce the clamping error, and improve the processing efficiency.

As shown in FIG. 2 , further, the fixture of the CNC machine tool further includes an ejector part 4 , and the ejector part 4 includes a second drive device 41 and a top block 42 connected to the output shaft of the second drive device 41 , and the top block 42 uses The workpiece 6 is ejected under the driving of the second driving device 41 . The number of the ejecting parts 4 can be set to two, and the two ejecting parts 4 are respectively located on both sides of the clamping part 2 . Before processing, the workpiece 6 is placed on the top block and the upper end of the fixed block 22. After the processing is completed, the second driving device 41 drives the top block 42 to move upward, and the workpiece 6 is lifted up by the top block 42 to realize the unloading action and prevent the The workpiece 6 is adhered to the die 3 .

Specifically, the second driving device 41 is fixed on the bottom of the base plate 1 , and the base plate 1 is provided with a first through hole (not shown in the figure) through which the output shaft of the second driving device 41 passes. The output shaft of the second driving device 41 passes through the first through hole and is connected to the bottom of the top block 42 , which has a compact structure and saves space. The top block 42 can be set so that the upper surface is flush with the top surface of the die 3 . When the machining is completed, the second driving device 41 drives the top block 42 to move upward, and the workpiece 6 can leave the die 3 .

Further, the fixture of the CNC machine tool also includes a positioning assembly. As shown in Figures 1 and 5, the positioning assembly includes a third driving device 51 and a positioning block 52 connected with the output shaft of the third driving device 51. The positioning block 52 is provided with a positioning block 52. There is a positioning groove 521 for accommodating the workpiece 6 . The third driving device 51 is fixed on the base plate 1 , and the output shaft of the third driving device 51 can be parallel to the base plate 1 . After the clamping part 2 clamps the workpiece 6 , the third driving device 51 drives the positioning block 52 to the direction of the workpiece 6 . Move until the part of the workpiece 6 is accommodated in the positioning groove 521, so as to realize the positioning of the workpiece 6 by the positioning block 52, further preventing the movement of the workpiece 6 during processing, and improving the processing accuracy. The positioning block 52 is disposed facing the clamping part 2 , so that both sides of the workpiece 6 can be fixed. The positioning groove 521 can be set as a U-shaped groove, and the specific size can be set according to the workpiece 6 to be processed.

More specifically, as shown in FIG. 2 , the pressing block 212 includes a first pressing block 2121 and a second pressing block 2122 that are connected to each other, and the second pressing block 2122 is located between the first pressing block 2121 and the fixing block 22 . The block 2121 is a rigid pressing block, and the second pressing block 2122 is an elastic pressing block. When the workpiece 6 is clamped, the second pressing block 2122 is in direct contact with the workpiece 6 to prevent the pressing block 212 from being crushed and damaging the workpiece 6 . Wherein, the first pressing block 2121 can be made of steel, and the second pressing block 2122 can be made of superior glue.

As a preferred implementation manner, as shown in FIG. 3 , the pressing block 212 is provided with an escape groove 2123 , and the escape groove 2123 is used for the punch to pass through to reach the punching hole 31 of the die 3 . The let-away groove 2123 can be set as a U-shaped groove, and the pressing blocks 212 located on both sides of the U-shaped groove can be used to press the workpiece 6 to prevent the workpiece 6 from moving and improve the machining accuracy.

The upper surface of the female die 3 in this embodiment is flush with the upper surface of the fixing block 22 to ensure the flatness and stability of the workpiece 6 when placed. As shown in FIGS. 3 and 4 , the female die 3 is provided with threaded holes 32 , the fixing block 22 is provided with an accommodating groove 221 for accommodating the fixing block 22 , and the die 3 is fixed in the accommodating groove 221 by screws.

1 and 2, the first driving device 211 is fixed on the bottom of the base plate 1, and the base plate 1 is provided with a second through hole (not shown) for the output shaft of the first driving device 211 to pass through, The compactness of the overall structure is improved, and the space is saved.

The number of clamping parts 2 in this embodiment is multiple, and the clamping parts 2 are arranged at intervals, so that processing can be completed at different positions on the workpiece 6 at the same time, thereby improving the processing efficiency.

Wherein, the first driving device 211, the second driving device 41 and the third driving device 51 may be air cylinders or hydraulic cylinders. Of course, in other embodiments, they may also be electric push rods, such as trapezoidal screw linear drives, ball bearings, etc. The screw type linear drive, the planetary roller screw type linear drive, and the planetary roller screw type linear drive will not be repeated here.

In addition, the utility model also proposes a numerically controlled machine tool, which includes a base frame, a tool handle, a punch and the above-mentioned fixture of the numerically controlled machine tool. The end of the handle. When the workpiece 6 needs to be punched, the punch is installed on the tool holder. When other CNC machining is required, the tool can be switched. For example, the milling cutter can be installed on the tool holder to complete the milling machine processing. The specific structure of the fixture of the CNC machine tool refers to the above-mentioned embodiments. Since the CNC machine tool adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. One more elaboration.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the conception of the present invention, the equivalent structure transformation made by using the contents of the description and drawings of the present invention, or directly / Indirect applications in other related technical fields are included in the scope of patent protection of the present utility model.

Claims (10)

1. the fixture of a numerically controlled machine tool, is characterized in that, comprises: substrate; The clamping part includes a pressing block assembly and a fixing block fixed on the base plate, the fixing block is used for placing the workpiece, and the pressing block assembly includes a first driving device and an output shaft connected with the first driving device the pressing block, the first driving device is used to drive the pressing block close to or away from the fixing block to clamp or loosen the workpiece; The concave die is fixed in the fixing block, and the concave die is provided with punching holes for matching with the punch. 2 . The fixture of the numerically controlled machine tool according to claim 1 , wherein the fixture of the numerically controlled machine tool further comprises an ejecting part, and the ejecting part comprises a second driving device and an output of the second driving device. 3 . A shaft-connected top block, the top block is used for ejecting the workpiece under the driving of the second driving device. 3 . The fixture for a CNC machine tool according to claim 2 , wherein the second driving device is fixed on the bottom of the base plate, and the base plate is provided with an output shaft for the second driving device to pass through. 4 . the first through hole. 4. The fixture of the CNC machine tool according to claim 1, characterized in that, the fixture of the CNC machine tool further comprises a positioning assembly comprising a third driving device and an output shaft connected with the third driving device The positioning block is provided with a positioning groove for accommodating the workpiece. 5. The fixture for a CNC machine tool according to claim 1, wherein the pressing block comprises a first pressing block and a second pressing block which are connected to each other, and the second pressing block is located between the first pressing block and the second pressing block. Between the fixed blocks, the first pressure block is a rigid pressure block, and the second pressure block is an elastic pressure block. 6. The jig for a numerically controlled machine tool according to any one of claims 1 to 5, wherein the pressing block is provided with a let-away groove, and the let-away groove is used for the punch to pass through to reach the desired position. The punching hole of the die. 7 . The jig for a numerically controlled machine tool according to claim 1 , wherein the upper surface of the die is flush with the upper surface of the fixing block. 8 . 8 . The jig for a numerically controlled machine tool according to claim 1 , wherein the first driving device is fixed on the bottom of the base plate, and the base plate is provided with the first drive device. 9 . A second through hole through which the output shaft of the device passes. 9 . The jig for a numerically controlled machine tool according to claim 1 , wherein the number of the clamping parts is plural. 10 . 10. A numerically controlled machine tool, characterized in that it comprises a base frame, a tool holder, a punch and a fixture of the numerically controlled machine tool according to any one of claims 1 to 9, wherein the tool holder and the fixture of the numerically controlled machine tool are both installed On the base frame, the punch is detachably mounted on the end of the handle.

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