CNC machining fixing device

Abstract

The utility model provides a CNC machining fixing device which comprises a containing base and a pressing and holding piece, the containing base is provided with a limiting area, and the limiting area is used for limiting the position of a workpiece; the pressing and holding piece is provided with a feeding opening, and the pressing and holding piece is separably arranged on the limiting area in an overlapped mode; when the pressing and holding part is arranged on the limiting area in an overlapped mode, the pressing and holding part and the containing base are used for clamping a workpiece together, the feeding port is used for discharging the workpiece, and when the pressing and holding part is separated from the limiting area, the pressing and holding part avoids the workpiece to be loaded into or taken out of the limiting area, and the CNC machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool processing, in particular to a CNC processing fixing device. Background Art

[0002] Nowadays, with the ever-expanding market size of smart electronic products, the market demand for the manufacturing efficiency of electronic products is gradually increasing. However, due to the peak and trough periods of demand, manufacturing companies are short of or surplus in personnel at different times. Excessive demand for human resources will increase the company's labor costs and reduce the company's profits. Therefore, the development of automated equipment can greatly reduce the company's demand for labor costs while improving efficiency. In the prior art, the production process for preparing electronic product casings requires sub-station processing, which requires a large amount of manpower to load and unload products, carry mobile fixtures, and the CNC machine is intermittently shut down. The machine utilization rate is low, and the most serious problem is that the sub-station processing causes product size deviations and faces the risk of delivery delays. Therefore, the most ideal processing method is to replace manpower with machines, and complete all processing actions with one-stop machinery. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a CNC machining fixture to improve the CNC machining efficiency.

[0004] The utility model provides a CNC machining fixing device, characterized in that it comprises a placing base and a holding piece, the placing base is provided with a limiting area, the limiting area is used to limit the position of a workpiece; the holding piece has a feeding port, the holding piece can be detachably stacked on the limiting area; when the holding piece is stacked on the limiting area, the holding piece and the placing base are used to clamp the workpiece together, the feeding port is used to drop material to the workpiece, and when the holding piece is separated from the limiting area, the holding piece avoids the workpiece from being loaded into or taken out of the limiting area.

[0005] In one embodiment, the pressing member is arranged on one side of the limiting area and is rotatably connected to the placement base. As the pressing member rotates, the pressing member is overlapped on the limiting area to jointly clamp and fix the workpiece, or the limiting area is exposed to facilitate the loading or removal of the workpiece.

[0006] In one embodiment, a fixing member is further included, and the fixing member is detachably connected to the holding member to fix the holding member and the placement base, or to prevent the holding member from being separated from the limiting area.

[0007] In one embodiment, the fixing member is disposed at one side of the limiting area and is rotatably connected to the placement base. As the fixing member rotates, the fixing member is connected to or separated from the holding member.

[0008] In one embodiment, the pressing member has an arc-shaped fixing groove, and the fixing member has an arc-shaped fixing end. As the fixing member rotates, the fixing end enters or exits the fixing groove.

[0009] In one embodiment, a positioning mechanism is further included. The positioning mechanism is disposed within the limiting area and is used for fixing the workpiece.

[0010] In one embodiment, the positioning mechanism includes a positioning table and an adsorption assembly. The adsorption assembly is disposed within the positioning table and communicates inside and outside the positioning table for adsorbing the workpiece.

[0011] In one embodiment, the positioning table is provided with an irregular annular sealing groove and a first adsorption hole. The first adsorption hole is disposed within the annular closed area of the sealing groove. The sealing groove is used for installing a sealing ring to form a negative pressure within the annular closed area of the sealing groove.

[0012] In one embodiment, the adsorption assembly further includes a positioning core. The positioning core is disposed on the first adsorption hole. The positioning core has a hollowed-out area configured to match the contour of the workpiece. The hollowed-out area communicates with the first adsorption hole for fixing the workpiece.

[0013] In one embodiment, the positioning table is further provided with a plurality of second adsorption holes. The plurality of second adsorption holes are disposed outside the closed area of the sealing groove and are arranged along the circumference of the sealing groove.

[0014] For the CNC machining fixing device provided by the present utility model, after the workpiece is preliminarily limited by the limiting area, the CNC can perform a first machining on the workpiece. Then, by stacking the pressing member within the limiting area, the pressing member and the placement base jointly clamp the workpiece, facilitating the CNC to perform secondary or multiple machining on the workpiece, reducing the problem of reduced machining accuracy caused by repeated handling between multiple machining operations of the workpiece, improving the utilization rate of the CNC, increasing the machining efficiency of the workpiece, saving the enterprise investment, and reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic three-dimensional structure diagram of the CNC machining fixing device in the embodiment of the present utility model.

[0017] Figure 2 For Figure 1Schematic plan view of the fixing device for CNC machining

[0018] Figure 3 is Figure 1 Schematic plan view of the pressing member

[0019] Figure 4 is Figure 1 Schematic plan view of the fixing member

[0020] Figure 5 is Figure 1 Schematic plan view of the placement base and the positioning mechanism without a positioning core

[0021] Figure 6 is Figure 1 Schematic plan view of the positioning mechanism

[0022] Figure 7 Schematic plan view of the workpiece in this embodiment

[0023] Figure 8 is Figure 1 Schematic plan view of the placement base and the fixing mechanism with a positioning core

[0024] Reference numerals: 10, placement base; 11, limiting area; 12, limiting platform; 20, pressing member; 21, feeding port; 22, connecting end; 23, rotating end; 24, fixing groove, 30 fixing member; 31, fixing end; 40, positioning mechanism; 41, positioning platform; 411, sealing groove; 412, closed area; 413, first adsorption hole; 414, second adsorption hole; 42, adsorption assembly; 421, air pipe joint; 43, positioning core; 431, hollow area; 50, first driving mechanism; 60, second driving mechanism; 70, third driving mechanism. Detailed implementation manners

[0025] Next, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Based on the description 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.

[0026] In the description of the present invention, unless otherwise clearly defined and limited, terms such as "arrangement", "installation", "connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0028] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0029] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0030] One embodiment of the utility model provides a CNC machining fixing device, including a placement base 10 and a holding piece 20, the placement base 10 is provided with a limiting area 11, the limiting area 11 is used to limit the position of the workpiece; the holding piece 20 has a feed port 21, and the holding piece 20 can be detachably stacked on the limiting area 11; when the holding piece 20 is stacked on the limiting area 11, the holding piece 20 and the placement base 10 are used to clamp the workpiece together, the feed port 21 is used to drop material to the workpiece, and when the holding piece 20 is separated from the limiting area 11, the holding piece 20 avoids the workpiece from being loaded into or taken out of the limiting area 11.

[0031] Specifically, the workpiece is loaded into the limiting area 11 of the placing base 10. The limiting area 11 can limit the position of the workpiece, so that during the process of fixing the workpiece by the pressing member 20, the workpiece is prevented from displacement, ensuring the accurate placement of the workpiece and improving the accuracy during subsequent processing. When the pressing member 20 is not stacked above the limiting area 11, the limiting area 11 is exposed. At this time, the workpiece to be processed can be loaded, or the processed workpiece can be taken out when it is exposed. When the workpiece to be processed is exposed, the machine tool can also perform a first processing on the workpiece. When secondary processing is required, the pressing member 20 is arranged above the limiting area 11, so that the workpiece is clamped between the pressing member 20 and the limiting area 11. At this time, the machine tool can perform secondary processing such as injection molding on the workpiece through the pressing member 20. The injection plastic slurry can enter the workpiece from the feed port 21, or under the combined clamping and fixing of the pressing member 20 and the placing base 10, the machine tool can perform secondary processing or reprocessing more than three times on the workpiece from other angles. Without repeating the handling and positioning of the workpiece between two processes, the processing flow is shortened, a large amount of manpower and material resources are saved, and problems such as reduced processing accuracy derived from multiple handling in sub-station processing are avoided. It also prevents the intermittent shutdown of the CNC machine tool, improves the utilization rate of the machine tool, improves the processing efficiency of the workpiece, and reduces risks such as delivery delay and low product yield.

[0032] In this embodiment, the pressing member 20 is arranged on one side of the limiting area 11 and is rotatably connected to the placing base 10. As the pressing member 20 rotates, the pressing member 20 is stacked on the limiting area 11 to jointly clamp and fix the workpiece, or the limiting area 11 is exposed to facilitate the loading or unloading of the workpiece.

[0033] Specifically, the pressing member 20 can be divided into a connecting end 22 and a rotating end 23 in the length direction. The connecting end 22 is used for rotatably connecting with the placing base 10, and the rotating end 23 opposite to the connecting end 22 is sequentially stacked on or removed from the limiting area 11 as one end of the connecting end 22 rotates. The pressing member 20 is relatively fixed to the placing base 10 in a rotatable manner, and at the same time, the pressing member 20 can selectively move inside and outside the limiting area 11. This can reduce the position error of the pressing member 20 during multiple handling or movement. When the pressing member 20 rotates to the same angle or the same position each time, its relative position with the previous time can be kept consistent, ensuring no batch difference after the workpiece is clamped.

[0034] Further, the rotation direction of the pressing member 20 is the horizontal direction, that is, the position change of the rotating end 23 during the rotation process of the pressing member 20 all occurs on the same horizontal plane, and there is no need to reserve space for its movement in the height direction, which can reduce the space occupied by the CNC in the height direction.

[0035] In other embodiments, the holding member 20 can be hinged to the placement base 10, or can be hinged to the placement base 10 through a hinge spring, and the rotation direction of the holding member 20 is the height direction, that is, the position changes of the rotating end 23 of the holding member 20 during the rotation process occur at different height positions. When the rotating end 23 is at the highest position, the intersection spring uses elastic force to stabilize the holding member 20 in this shape to prevent it from automatically drooping due to gravity.

[0036] In other embodiments, the holding member 20 can be completely separated from the placement base 10 , and when the workpiece needs to be clamped, the holding member 20 is transferred or transported to the limiting area 11 .

[0037] In this embodiment, the CNC machining fixture further includes a fixing member 30 , which is detachably connected to the holding member 20 to fix the holding member 20 and the placement base 10 , or to prevent the holding member 20 from being separated from the limiting area 11 .

[0038] Specifically, when the holding member 20 rotates to the limiting area 11, the rotating end 23 is preferably fixed relative to the placement base 10, so that the holding member 20 as a whole and the limiting area 11 can no longer move, thereby ensuring the stability of the workpiece fixation. When the holding member 20 is located above the limiting area 11, it can be detachably connected and fixed to the placement base 10 by means of a clamping or buckling connection through the fixing member 30. When the fixing member 30 releases the holding member 20 from the placement base 10, the holding member 20 can resume the rotation function, thereby moving out of the limiting area 11.

[0039] In this embodiment, the fixing member 30 is disposed at one side of the limiting area 11 and is rotatably connected to the placement base 10 . As the fixing member 30 rotates, the fixing member 30 is connected to or separated from the holding member 20 .

[0040] Specifically, the connection method between the fixing member 30 and the pressing member 20 is similar to the connection method of the pressing member 20. The fixing member 30 and the placement base 10 are kept relatively fixed by a rotational connection, and the positional freedom of the fixing member 30 and the pressing member 20 is guaranteed, so that the fixing member 30 can both fix the pressing member 20 and prevent the pressing member 20 from rotating in and out of the limiting area 11.

[0041] Preferably, the fixing member 30 and the pressing member 20 are respectively arranged on opposite sides of the limiting area 11 and are rotatably connected to the placement base 10 .

[0042] In this embodiment, the holding member 20 has an arc-shaped fixing groove 24 , and the fixing member 30 has an arc-shaped fixing end 31 . As the fixing member 30 rotates, the fixing end 31 enters or exits the fixing groove 24 .

[0043] Specifically, after the pressing member 20 stops at the position where the workpiece is clamped, the fixing member 30 gradually enters the pressing member 20 from one side of the pressing member 20 and partially overlaps the pressing member 20. At this time, there is a certain degree of overlap between the fixing member 30 and the pressing member 20. In order to limit the relative displacement between the fixing member 30 and the pressing member 20, a fixing groove 24 is provided on the pressing member 20. When the fixing end 31 of the fixing member 30 enters the fixing groove 24, its position is restricted by the fixing groove 24. The arc-shaped setting of the fixing groove 24 cooperates with the arc-shaped setting of the fixing end 31, which facilitates the fixing member 30 to enter the fixing groove 24 from the side of the pressing member 20. Moreover, the arc shape makes the groove depth of the fixing groove 24 gradually increase and then gradually decrease, which has a certain guiding effect on the fixing end 31.

[0044] In this embodiment, the CNC machining fixing device further includes a positioning mechanism 40. The positioning mechanism 40 is arranged in the limiting area 11 and is used for fixing the workpiece.

[0045] Specifically, after the position of the workpiece is restricted by the limiting area 11, the workpiece is initially fixed in the limiting area 11 by the positioning mechanism 40 in the limiting area 11, so that the workpiece can be stably processed once without being clamped by the pressing member 20.

[0046] In this embodiment, the positioning mechanism 40 includes a positioning table 41 and an adsorption assembly 42. The adsorption assembly 42 is arranged in the positioning table 41 and communicates with the inside and outside of the positioning table 41 for adsorbing the workpiece.

[0047] Specifically, the positioning table 41 has a cavity inside, which is used to arrange the adsorption assembly 42. The adsorption assembly 42 includes an air pipe joint 421. The air pipe joint 421 is buried in the positioning table 41 and communicates with an external negative pressure driver. The surface of the positioning table 41 is hollowed out and connected to the air pipe joint 421, so that the workpiece can be adsorbed on the surface of the positioning table 41 and fixed to the positioning table 41 under the drive of the negative pressure driver.

[0048] In other embodiments, the adsorption assembly 42 may further include a suction nozzle. The suction nozzle communicates with the air pipe joint 421 and extends out from the surface of the positioning table 41 to directly fix the workpiece on the suction nozzle.

[0049] In this embodiment, the positioning table 41 is provided with an irregular annular sealing groove 411 and a first adsorption hole 413. The first adsorption hole 413 is arranged in the annular closed area 412 of the sealing groove 411. The sealing groove 411 is used to install a sealing ring to form a negative pressure in the annular closed area 412 of the sealing groove 411.

[0050] Specifically, the sealing groove 411 is arranged as an irregular closed ring. On the one hand, it is to cooperate with the shape of the workpiece. On the other hand, it can extend the length of the sealing groove 411 and the sealing ring, making the edge of the adsorption area irregular, avoiding the easy occurrence of chain reactions when a certain part of the sealing ring detaches from the workpiece, and thus preventing the entire sealing ring from falling off. A negative pressure is formed within the closed area 412 of the sealing groove 411, which can increase the adsorbed area of the workpiece and improve the fixing stability of the workpiece.

[0051] In this embodiment, the adsorption assembly 42 further includes a positioning core 43. The positioning core 43 is arranged on the first adsorption hole 413. The positioning core 43 has a hollow area 431 configured to conform to the contour of the workpiece. The hollow area 431 communicates with the first adsorption hole 413 and is used to fix the workpiece.

[0052] Specifically, the hollow area 431 of the positioning core 43 communicates with the first adsorption hole 413 and the air pipe joint 421, ensuring that the formation of negative pressure within the annular closed area 412 of the sealing groove 411 is not affected. The hollow area 431 of the positioning core 43 conforms to the surface contour of the workpiece, enabling the surface contour of the workpiece to be mutually fitted with the surface contour of the positioning core 43, further ensuring the fixing stability of the workpiece.

[0053] In this embodiment, the positioning table 41 is further provided with a plurality of second adsorption holes 414. The plurality of second adsorption holes 414 are arranged outside the closed area 412 of the sealing groove 411 and along the circumferential direction of the sealing groove 411.

[0054] Specifically, outside the negative pressure area defined by the sealing groove 411, the workpiece is fixed hierarchically. That is, the outermost layer is limited in position by the limiting area 11, the second outermost layer is adsorbed and fixed by the second adsorption holes 414, and the core layer is fixed by the first adsorption hole 413 and the positioning core 43. The workpiece can ensure the stable progress of one-time processing under multi-layer fixation.

[0055] Furthermore, the second adsorption hole 414 is a long and narrow hole with a certain arc.

[0056] In this embodiment, the CNC machining fixing device further includes a first driving mechanism 50, a second driving mechanism 60, and a third driving mechanism 70. The first driving mechanism 50 is used to drive the pressing member 20 to rotate, the second driving mechanism 60 is used to drive the fixing member 30 to rotate, and the third driving mechanism 70 is used to drive the placement base 10 to rotate or move.

[0057] In this embodiment, the placement base 10 further includes a plurality of limiting platforms 12. The plurality of limiting platforms 12 jointly define a limiting area 11. The limiting platforms 12 protrude from the limiting area 11 and are used to limit the position of the workpiece within the limiting area 11.

[0058] In this embodiment, the number of the limiting areas 11 and the pressing members 20 is multiple, and each limiting area 11 is arranged corresponding to each pressing member 20 one by one. When there are two limiting areas 11 and two pressing members 20, the two pressing members 20 are symmetrically arranged on the opposite sides of the two limiting areas 11, and the positioning member 3 is arranged between the two limiting areas 11 for fixing the two pressing members 20 simultaneously.

[0059] For the CNC machining fixing device provided by the present utility model, after the workpiece is preliminarily limited by the limiting area 11, the CNC can perform primary machining on the workpiece. Then, by stacking the pressing member 20 in the limiting area 11, the pressing member 20 and the placement base 10 jointly clamp the workpiece, which is convenient for the CNC to perform secondary or multiple machining on the workpiece, reduces the problem of reduced machining accuracy caused by repeated handling between multiple machining of the workpiece, improves the utilization rate of the CNC, improves the machining efficiency of the workpiece, saves the investment of the enterprise, and reduces costs and increases efficiency.

[0060] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A CNC machining fixture, characterized in that: include: A placement base (10), wherein the placement base (10) is provided with a limiting area (11), and the limiting area (11) is used to limit the position of the workpiece; A holding member (20), the holding member (20) having a feed port (21), the holding member (20) being detachably stacked on the limiting area (11); When the holding member (20) is superimposed on the limiting area (11), the holding member (20) and the placement base (10) are used to clamp the workpiece together, and the feed port (21) is used to drop the material into the workpiece. When the holding member (20) is separated from the limiting area (11), the holding member (20) avoids the workpiece from being loaded into or taken out of the limiting area (11).

2. The CNC machining fixture as claimed in claim 1, characterized in that: The holding member (20) is arranged on one side of the limiting area (11) and is rotatably connected to the placement base (10). As the holding member (20) rotates, the holding member (20) is overlapped on the limiting area (11) to jointly clamp and fix the workpiece, or the limiting area (11) is exposed to facilitate the loading or removal of the workpiece.

3. The CNC machining fixture as claimed in claim 1, characterized in that: It also comprises a fixing member (30), wherein the fixing member (30) is detachably connected to the holding member (20) so as to fix the holding member (20) and the placement base (10), or to prevent the holding member (20) from being separated from the limiting area (11).

4. The CNC machining fixture as claimed in claim 3, characterized in that: The fixing member (30) is arranged at one side of the limiting area (11) and is rotatably connected to the placement base (10); as the fixing member (30) rotates, the fixing member (30) is connected to or separated from the holding member (20).

5. The CNC machining fixture as claimed in claim 4, characterized in that: The holding member (20) has an arc-shaped fixing groove (24), and the fixing member (30) has an arc-shaped fixing end (31). As the fixing member (30) rotates, the fixing end (31) enters or exits the fixing groove (24).

6. The CNC machining fixture as claimed in claim 1, characterized in that: It also comprises a positioning mechanism (40), wherein the positioning mechanism (40) is arranged in the limiting area (11) and is used to fix the workpiece.

7. The CNC machining fixture as claimed in claim 6, characterized in that: The positioning mechanism (40) comprises a positioning platform (41) and an adsorption component (42); the adsorption component (42) is arranged inside the positioning platform (41) and communicates with the inside and outside of the positioning platform (41) for adsorbing a workpiece.

8. The CNC machining fixture as claimed in claim 7, characterized in that: The positioning platform (41) is provided with an irregular annular sealing groove (411) and a first adsorption hole (413), wherein the first adsorption hole (413) is provided in an annular closed area (412) of the sealing groove (411), and the sealing groove (411) is used for installing a sealing ring to form a negative pressure in the annular closed area (412) of the sealing groove (411).

9. The CNC machining fixture as claimed in claim 8, characterized in that: The adsorption component (42) further comprises a positioning core (43), wherein the positioning core (43) is arranged on the first adsorption hole (413), and the positioning core (43) has a hollow area (431) arranged in accordance with the contour of the workpiece, and the hollow area (431) is connected to the first adsorption hole (413) and is used to fix the workpiece.

10. The CNC machining fixture as claimed in claim 8, characterized in that: The positioning platform (41) is further provided with a plurality of second adsorption holes (414), and the plurality of second adsorption holes (414) are provided outside the closed area (412) of the sealing groove (411) and are arranged along the circumference of the sealing groove (411).

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