CN213672014U - Multi-angle machining clamp for thin-wall parts - Google Patents

Abstract

The utility model relates to a multi-angle adds clamping apparatus of thin wall part. The part pressing plate is characterized by comprising a rotary workbench, a limiting clamping device and an ejection device, wherein the limiting clamping device comprises a part mold core and a part pressing plate, the part mold core is fixed on the surface of the rotary workbench, the part pressing plate is located above the part mold core, the ejection device is located on the back of the rotary workbench and fixedly connected with the part pressing plate, the ejection device controls the telescopic motion of the part pressing plate, the shape of the part pressing plate is matched with the shape of a part to be processed, and processing holes are formed in each surface of the part pressing plate. The utility model utilizes the milling characteristic of the machining center to unify the design reference, the process reference and the programming original point so as to reduce the reference non-coincidence error; the clamping times are reduced, and the surfaces to be machined on the workpiece can be machined after one-time positioning and clamping, so that the clamping error is reduced, and the mutual position precision between the machined surfaces is improved.

Description

Multi-angle machining clamp for thin-wall parts

Technical Field

The utility model relates to a numerical control processing technology field especially is about a multi-angle adds clamping apparatus of thin wall part.

Background

Some factories process parts by common equipment, usually adopt the traditional processing technology of manual clamping, and are not very effective when applied to processing more complex workpieces, especially thin-wall parts. The machining process adopting the traditional manual clamping has the problems that the auxiliary time is long, the working procedure is complicated, the workpiece is deformed, the size error does not meet the drawing requirement, the machining precision cannot be guaranteed, the production is affected, and the machining yield of products is reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a solve the yielding, the low technical problem of precision of thin wall product processing, provide a thin wall parts's adds clamping apparatus.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a multi-angle adds clamping apparatus of thin wall part, includes swivel work head, spacing clamping device and ejecting device, spacing clamping device includes part mold core and part clamp plate, the part mold core is fixed in swivel work head surface, the part clamp plate is located the top of part mold core, ejecting device is located the swivel work head back and with part clamp plate fixed connection, ejecting device controls the concertina movement of part clamp plate, the shape of part clamp plate cooperatees with the shape of waiting to process the part, each side of part clamp plate all is equipped with the processing hole. The utility model discloses a part mold core and part clamp plate can adjust according to the thin wall product of actual processing, and part mold core and part clamp plate cooperate jointly to realize the location and the fixing to the thin wall product, and according to the position that thin wall product need be processed, only set up the processing hole according to this position on the part clamp plate to can increase the area of contact of clamp plate and thin wall product, the deformation of thin wall product in the course of working has limited been reduced, and simultaneously, the processing hole of seting up according to the thin wall product also can effectively improve its machining precision man-hour. Additionally, the utility model discloses a swivel work head's effect can be processed a plurality of surfaces of product to reduce the clamping number of times, accomplish and to process out all the machined surfaces of treating on the product after the clamping of once fixing a position, with reduce the clamping error, improve the mutual position precision between the machined surface.

Further, the ejection device comprises an air cylinder and an ejector rod, the air cylinder controls the ejector rod to stretch, the air cylinder is fixed to the back face of the rotary workbench, and the ejector rod penetrates through the rotary workbench and is fixedly connected with the part pressing plate. The cylinder is through the concertina movement of control ejector pin to realize treating compressing tightly or loosening of processing the part through cylinder control part clamp plate.

Furthermore, the part mold core is provided with a positioning groove. The shape of constant head tank is set up according to the actual shape of thin wall product, and its aim at makes things convenient for the location of product, reduces the clamping step simultaneously, and the clamping is quick moreover, convenient and reliable, simple structure, need not increase extra anchor clamps, greatly reduced intensity of labour, promoted machining efficiency.

Furthermore, the part pressing plate is further provided with a screw hole which is a stepped hole and is positioned above the ejector rod, and the part pressing plate is fixedly connected with the ejector rod through a nut. The utility model discloses a control compressing tightly and the separation of part clamp plate and product with the flexible of crossing cylinder control ejector pin, and the setting of shoulder hole is then for the convenience of the split of part clamp plate and ejector pin with fixed, also make things convenient for the split of part clamp plate and ejecting device promptly and fix.

Further, the processing holes are provided with clearance steps. In order to avoid the influence of the part pressing plate on product processing, the part needing to be processed on the part pressing plate is processed in advance to form a processing hole with a clearance step, the clearance step can easily remove scraps generated in the processing, and the scraps are prevented from being extruded in the groove.

Furthermore, the rotary worktable further comprises two support frames, and the two sides of the rotary worktable are respectively connected with the two support frames in a rotating manner. The support frame makes the rotary worktable overhead, leaves enough space for the rotation of the rotary worktable, and facilitates the rotation of the rotary worktable and the processing of a plurality of surfaces of products.

Furthermore, the device also comprises a pushing-out mechanism, wherein the pushing-out mechanism is fixed on the surface of the rotary workbench and is positioned on the surface of the same rotary workbench together with the limiting and clamping device. After the product is processed, the part pressing plate is separated from the product through the ejection device, and the product is ejected through the ejection mechanism to realize an automatic process.

Furthermore, the push-out mechanism comprises a plurality of pneumatic valves and push rods, and the push rods are controlled to stretch and retract by the pneumatic valves. The push rod needs to be arranged to smoothly push the product to be separated from the part mold core after the part pressing plate is separated from the product, namely, the push rod cannot be influenced by the part mold core during the telescopic motion.

Furthermore, the part mold core and the part pressing plate are of a bilateral symmetry structure. The design of symmetrical formula mechanism can make the utility model discloses anchor clamps satisfy the processing of duplex position, process two products simultaneously promptly to improve the machining efficiency of product. In addition, a U-shaped product which is symmetrical in structure can be processed.

The utility model discloses compare in prior art's beneficial effect as follows.

One, the utility model discloses a part mold core and part clamp plate among the spacing clamping device and product direct contact, the clamp force when having solved manual clamping is inconsistent, the error is big, the precision is low and workman intensity of labour shortcoming such as big, uses the utility model discloses during spacing clamping device, only need place the product with the part mold core on, restart cylinder drive part clamp plate can realize the self-holding of product, it receives the clamp force also more unanimous simultaneously.

Two, the utility model discloses an anchor clamps clamping is convenient, need not to rule the alignment, according to the constant head tank location can, obviously reduced supplementary man-hour, the rigidity of work piece has obtained effective promotion, has avoided the machining error because of the appearance of instrument thickness, further promotes machining precision and quality.

Thirdly, the utility model discloses anchor clamps are because simple structure, and the processing of part mold core and part clamp plate is easy, consequently can carry out corresponding design according to the product characteristic of difference for anchor clamps agree with the product more, and anchor clamps can change according to the shape of product is nimble promptly.

Fourthly, the utility model discloses the size of clamp force has not only been solved to the complicated thin wall part of processing, has still solved a series of problems such as the degree of complexity to the deformation of the reliability of workpiece setting, work piece and anchor clamps, clamp force to production preparation time and manufacturing cost have been saved.

Fifthly, the utility model discloses a swivel work head's effect can be processed a plurality of surfaces of product to reduce the clamping number of times, accomplish and to process out all the machined surfaces of treating on the product after the clamping of once fixing a position, with reduce the clamping error, improve the mutual position precision between the machined surface.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is an exploded view of the position-limiting clamping device according to the embodiment of the present invention.

Fig. 3 is a drawing of a part to be processed according to an embodiment of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-3, a preferred embodiment of the present invention is as follows.

As shown in fig. 1 and 2, a multi-angle machining fixture for thin-wall parts comprises a rotary workbench 1, a limiting clamping device 2 and an ejection device 3, wherein the limiting clamping device 2 comprises a part mold core 21 and a part pressing plate 22, the part mold core 21 is fixed on the surface of the rotary workbench 1, the part pressing plate 22 is located above the part mold core 21, the ejection device 3 is located on the back of the rotary workbench 1 and is fixedly connected with the part pressing plate 22, the ejection device 3 controls the telescopic motion of the part pressing plate 22, the shape of the part pressing plate 22 is matched with the shape of a part to be machined, and machining holes 221 are formed in each surface of the part pressing plate 22. The utility model discloses a thin wall product that part mold core 21 and part clamp plate 22 can be based on actual processing adjusts, part mold core 21 and part clamp plate 22 cooperate jointly to realize location and fixed to the thin wall product, according to the position that thin wall product need be processed, only set up the process hole according to this position on part clamp plate 22, thereby can increase the area of contact of clamp plate and thin wall product, the limited deformation that has reduced thin wall product in the course of working, and simultaneously, the process hole of seting up according to the thin wall product also can effectively improve its machining precision man-hour. Additionally, the utility model discloses a plurality of surfaces of product can be processed to the effect of swivel work head 1 to reduce the clamping number of times, accomplish and to process out all the machined surfaces of treating on the product after the clamping of once fixing a position, with reduce the clamping error, improve the mutual position precision between the machined surface.

The ejection device 3 comprises an air cylinder 32 and an ejector rod 31, the air cylinder 32 controls the ejector rod 31 to stretch, the air cylinder 32 is fixed on the back of the rotary workbench 1, and the ejector rod 31 penetrates through the rotary workbench 1 and is fixedly connected with the part pressing plate 22. The air cylinder 32 controls the telescopic motion of the mandril 31 to realize the control of the part pressing plate 22 to press or release the part to be processed through the air cylinder 31.

The part mold core 21 is provided with a positioning groove. The shape of constant head tank is set up according to the actual shape of thin wall product, and its aim at makes things convenient for the location of product, reduces the clamping step simultaneously, and the clamping is quick moreover, convenient and reliable, simple structure, need not increase extra anchor clamps, greatly reduced intensity of labour, promoted machining efficiency.

The part pressing plate 22 is further provided with a screw hole 223, the screw hole 223 is a stepped hole, the screw hole 223 is located above the ejector rod 31, and the part pressing plate 22 is fixedly connected with the ejector rod 31 through a nut 7. The utility model discloses a control compressing tightly and the separation of part clamp plate 22 and product with the flexible of passing cylinder 32 control ejector pin 31, and the setting of shoulder hole is then for the convenience of the split of part clamp plate 22 and ejector pin 31 with fixed, also makes things convenient for the split of part clamp plate 22 and ejecting device 3 promptly and fixes.

The processing holes 221 on the part pressing plate 22 are all provided with clearance steps 222. In order to avoid the influence of the part pressing plate 22 on the product processing, the processing hole 221 with the clearance step 222 is formed on the part pressing plate 22 in advance, and the clearance step 222 can easily remove scraps generated in the processing process and avoid the scraps from being extruded in the groove.

The utility model discloses still include support frame 4, support frame 4 is two, and swivel work head 1's both sides rotate with two support frames 4 respectively and are connected. The support frame 4 makes the rotary worktable 1 overhead, so that enough space is reserved for the rotation of the rotary worktable 1, the rotation of the rotary worktable is convenient, and a plurality of surfaces of a product can be conveniently processed.

The utility model discloses still include ejecting mechanism 5, ejecting mechanism 5 is fixed in 1 surface of swivel work head to be located 1 surface of same swivel work head with spacing clamping device 2. After the product is processed, the part pressing plate 22 is separated from the product through the ejection device 3, and an automatic process is realized when the product is ejected through the ejection mechanism 5.

The push-out mechanism 5 includes a plurality of air-operated valves 52 and push rods 51, and the air-operated valves 52 control the extension and contraction of the push rods 51. The push rod 51 is required to be arranged to smoothly push the product to be separated from the part mold core 21 after the part pressing plate 22 is separated from the product, that is, the push rod 51 is not affected by the part mold core 21 during the telescopic movement.

The utility model discloses in, still fixed being equipped with the fixed plate on the swivel work head 1, ejecting device 3 and ejecting mechanism 5 all set up on the fixed plate.

The utility model discloses a part mold core 21 and part clamp plate 22 are bilateral symmetry formula structure. The design of symmetrical formula mechanism can make the utility model discloses anchor clamps satisfy the processing of duplex position, process two products simultaneously promptly to improve the machining efficiency of product.

After the design and manufacture of the fixture are completed, the part to be machined enters a positioning stage. In the positioning process, the position error is difficult to avoid, and the main reason is that the transmission of the part generates a gap in the machining process, so the machining allowance is reserved in the positioning process. The positioning datum is used for determining the position of a processed surface during workpiece processing and is directly related to the quality, efficiency and economy of the workpiece in the processing process, so that the positioning datum for processing is selected in the part processing process.

The thin wall part is daily common a processing part, the utility model discloses the appearance of the part of processing is not complicated, and programming is comparatively easy, nevertheless because self characteristics receive the influence in aspects such as anchor clamps, cutter easily in the course of working, requires to pay attention to more details when programming, has higher ability requirement to the designer. After positioning is finished, inputting machining codes in a numerical control machine tool, setting a machining sequence, machining on an XY plane, and swinging four shafts by 90 degrees to perform side machining after machining is finished. In the processing process, the workpieces must be tightened to prevent the workpieces from slipping and flying out to hurt people in the processing process, and cooling liquid is properly added to avoid the deformation of the parts due to heating, so that safe and civilized production is realized, and the manufacturing efficiency and quality are improved.

In actual processing, the utility model discloses the appearance of anchor clamps can solve machining precision not high well, the clamping expends time, makes inefficiency scheduling problem, has alleviateed operator's intensity of labour greatly, has improved production efficiency and guaranteed the part quality after processing, satisfies batch production's requirement, has gained very obvious economic benefits.

The utility model discloses a theory of operation: the utility model discloses anchor clamps are when using, it is ejecting with part clamp plate 22 through ejecting device 3 earlier, then will treat that the processing product is placed on part mold core 21, compress tightly the product by ejecting device 3 again, then process the front and the side of product through the rotation of rotation work, start release mechanism 5's pneumatic valve 52 after processing is accomplished, drive push rod 51 and release the product of processing completion, then reset and carry out the product processing of next time.

As shown in fig. 3, the utility model discloses the part that processes is the shell of a section product, belongs to thin wall part, and its form and position tolerance, size precision, roughness require highly, and the clamping of work piece is more difficult in the course of working, if the clamping is not in place can produce the atress uneven, leads to machining error great, seriously still can lead to the work piece to warp. Therefore, after the thin-wall part is positioned, a certain mechanism is required to be considered to generate clamping force to press the workpiece on the positioning original piece, so that the workpiece is kept at an accurate positioning position, position change and vibration cannot be generated due to the action of cutting force, and the machining precision and safe operation are ensured. And adopt the utility model discloses an above-mentioned problem can be solved to anchor clamps.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (9)

1. The utility model provides a multi-angle adds clamping apparatus of thin wall part, its characterized in that, includes swivel work head, spacing clamping device and ejecting device, spacing clamping device includes part mold core and part clamp plate, the part mold core is fixed in swivel work head surface, the part clamp plate is located the top of part mold core, ejecting device is located the swivel work head back and with part clamp plate fixed connection, ejecting device controls the concertina movement of part clamp plate, the shape of part clamp plate cooperatees with the shape of waiting to process the part, each side of part clamp plate all is equipped with the process hole.

2. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, wherein the ejection device comprises a cylinder and an ejector rod, the cylinder controls the ejector rod to extend and retract, the cylinder is fixed to the back of the rotary table, and the ejector rod penetrates through the rotary table and is fixedly connected with the part pressing plate.

3. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, wherein the part mold core is provided with positioning grooves.

4. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, wherein the part pressing plate is further provided with a screw hole, the screw hole is a stepped hole, the screw hole is located above the ejector rod, and the part pressing plate is fixedly connected with the ejector rod through a nut.

5. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, wherein the machining holes are provided with clearance steps.

6. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, further comprising two support frames, wherein two sides of the rotary table are rotatably connected with the two support frames respectively.

7. The multi-angle machining fixture for the thin-walled parts as claimed in claim 1, further comprising an ejecting mechanism fixed on the surface of the rotary table and located on the same surface of the rotary table as the position-limiting clamping device.

8. The multi-angle machining fixture for the thin-walled parts as claimed in claim 7, wherein the push-out mechanism comprises a plurality of pneumatic valves and push rods, and the pneumatic valves control the push rods to extend and retract.

9. The multi-angle machining fixture for the thin-walled parts as claimed in any one of claims 1 to 8, wherein the part mold core and the part press plate are of a left-right symmetrical structure.

Images