Automatic hydraulic clamp for machining EA288-535A engine support

Abstract

The utility model relates to an automatic hydraulic clamp for machining an EA288-535A engine support, which comprises a large bottom plate, a four-axis rotary table, a four-axis tailstock and a clamp bottom plate, wherein the four-axis rotary table and the four-axis tailstock are arranged on the large bottom plate, and the clamp bottom plate is connected with the four-axis rotary table and the four-axis tailstock. A bottom surface positioning block, three groups of pressing oil cylinders, an auxiliary supporting oil cylinder, an elastic floating positioning mechanism and a side positioning block are arranged on the clamp bottom plate, the bottom surface positioning block is triangularly arranged, the three groups of pressing oil cylinders, the auxiliary supporting oil cylinder, the elastic floating positioning mechanism and the side positioning block are arranged on the outer side of the bottom surface positioning block, the telescopic ends of the pressing oil cylinders are fixedly connected with pressing plates, and a gas detection device is arranged on the bottom surface positioning block. The fixture is provided with a fool-proof function and a gas detection mistake-proof function, can complete machining of all angles in the circumferential direction, can complete machining of all working steps of a workpiece at 0 degree and 180 degrees, greatly improves the product percent of pass, saves the machining cost, improves the production efficiency, and is extremely practical in actual use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining manufacturing technology relates to a kind of automatic hydraulic clamps of processing EA288-535A engine support. BACKGROUND

[0002] EA288-535A engine support, middle arch, two ends respectively extend outward, specific structure as shown in Figure 3 It has two assembly bosses in the middle of the arch of the support on one side, and a platform protruding towards the top on the other side. The central part of the assembly boss and the platform is equipped with assembly screw holes. The two sides of the support also have assembly column tables with holes. The machining of the support includes milling, drilling and tapping processes. It also needs to be machined on both sides. Under normal circumstances, it is machined by manually clamping in multiple processes and multiple stations. This method can lead to low production efficiency and high production cost. It can also cause product scrap due to improper clamping, accelerate tool consumption, and even cause machine damage and personal injury. From the cost or safety point of view, the disadvantages outweigh the advantages.

[0003] Therefore, it is necessary to develop an automatic clamp for processing EA288-535A engine support. SUMMARY

[0004] The utility model discloses a kind of automatic hydraulic clamps of processing EA288-535A engine support, to solve the above-mentioned existing EA288-535A engine support machining clamping efficiency low and the problem of low production efficiency and high production cost caused by clamping not in place, and it is proposed that all steps of processing can be clamped once to improve production efficiency.

[0005] The utility model discloses a kind of automatic hydraulic clamps of processing EA288-535A engine support, to solve the above-mentioned existing EA288-535A engine support machining clamping efficiency low and the problem of low production efficiency and high production cost caused by clamping not in place, and it is proposed that all steps of processing can be clamped once to improve production efficiency.

[0006] The automatic hydraulic clamp for processing EA288-535A engine support mentioned above, the clamp includes a large base plate provided with an oil circuit, a four-axis rotary table, a four-axis tailstock, a clamp base plate, a bottom surface positioning block, a pressing oil cylinder, an elastic floating positioning mechanism, a side / axial positioning block; the four-axis rotary table and the four-axis tailstock are coaxially and symmetrically arranged at the two ends of the upper end surface of the large base plate; the clamp base plate is respectively connected with the four-axis rotary table and the four-axis tailstock at the two ends; the bottom surface positioning block has three and is arranged in a triangular layout in the middle of the clamp base plate and matches the support to be processed; the pressing oil cylinder matches the bottom surface positioning block and has three groups and is arranged outside the bottom surface positioning block, including a first pressing oil cylinder, a second pressing oil cylinder and a third pressing oil cylinder; the first pressing oil cylinder and the second pressing oil cylinder are arranged on one side of the upper end surface of the clamp base plate, the first pressing oil cylinder is close to the four-axis tailstock and is arranged obliquely to the right towards the opposite side, the second pressing oil cylinder is close to the four-axis rotary table and is arranged obliquely upwards towards the left; the third pressing oil cylinder is arranged in the middle of the other side of the upper end surface of the clamp base plate and is arranged towards the first pressing oil cylinder, and the spacing between the third pressing oil cylinder and the first pressing oil cylinder is greater than the spacing between the first pressing oil cylinder and the second pressing oil cylinder; the telescopic end of the pressing oil cylinder is provided with a pressing plate; the elastic floating positioning mechanism includes a lateral elastic floating positioning mechanism arranged on the right side of the third pressing oil cylinder and an axial elastic floating positioning mechanism arranged between the first pressing oil cylinder and the third pressing oil cylinder; the side / axial positioning block is arranged between the first pressing oil cylinder and the second pressing oil cylinder and corresponds to the lateral elastic floating positioning mechanism.

[0007] The automatic hydraulic clamp for processing EA288-535A engine support, wherein: the clamp base plate is provided with a hydraulic oil circuit and an oil circuit interface, and a first air avoidance groove, a second air avoidance groove and a third air avoidance groove are arranged in the middle; the bottom surface positioning block is arranged on one side of the first air avoidance groove, the second air avoidance groove and the third air avoidance groove.

[0008] The automatic hydraulic clamp for processing EA288-535A engine support, wherein: the clamp is provided with an auxiliary supporting cylinder; the auxiliary supporting cylinder is arranged between the second pressing oil cylinder and the third pressing oil cylinder and close to the four-axis rotary table, and the telescopic end of the auxiliary supporting cylinder extends upwards from the clamp base plate.

[0009] The automatic hydraulic clamp for processing EA288-535A engine support, wherein: the axial elastic floating positioning mechanism is arranged on the two sides opposite to the auxiliary supporting cylinder and is arranged outside the first air avoidance groove between the first air avoidance groove and the third air avoidance groove.

[0010] The automatic hydraulic clamp for processing the engine support of EA288-535A is characterized in that: the clamp is provided with a gas detection device; and the gas detection device is arranged on a bottom surface positioning block close to the third pressing oil cylinder.

[0011] The automatic hydraulic clamp for processing the engine support of EA288-535A is characterized in that: the two ends of the clamp bottom plate are connected with the four-axis rotary table and the four-axis tailstock through connecting plates; and the connecting plates are fixedly connected with the rotating shafts of the four-axis rotary table and the four-axis tailstock.

[0012] The automatic hydraulic clamp for processing the engine support of EA288-535A is characterized in that: the clamp comprises a part chip punching mechanism; the part chip punching mechanism is symmetrically arranged on the two sides of the clamp bottom plate and comprises a mounting plate and a plurality of air nozzles uniformly distributed on the mounting plate; and the air nozzles are in communication with an external air source. Beneficial effects

[0013] The automatic hydraulic clamp of the utility model is provided with a foolproof function and a gas detection error prevention function, greatly improves product pass rate, saves processing cost, improves production efficiency, and is extremely practical in actual use. Meanwhile, the clamp can complete processing at various angles in the circumferential direction, and all work steps of the workpiece are completed when the rotary table is located at 0° and 180°, so that the processing process is shortened, the production efficiency is greatly improved, the equipment utilization rate is effectively improved, the input cost is saved, and the enterprise benefits are increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a structural schematic view of an automatic hydraulic clamp for processing an engine support of EA288-535A according to the utility model;

[0015] Figure 2 Fig. 2 is a part clamping schematic view of the automatic hydraulic clamp for processing the engine support of EA288-535A according to the utility model;

[0016] Figure 3 Fig. 3 is a structural schematic view of the engine support of EA288-535A. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Regarding directional terms such as "upper," "lower," "left," and "right," the directions shown in the accompanying drawings shall prevail.

[0019] like Figures 1-2 As shown, the automatic hydraulic fixture for machining EA288-535A engine brackets of this utility model includes a large base plate 1, a four-axis turntable 2, a four-axis tailstock 3, a connecting plate 4, a fixture base plate 5, a main clamping cylinder 6, a bottom positioning block 7, an auxiliary support cylinder 8, a pressure plate 9, an air detection device 10, a side / axial elastic floating positioning mechanism 11, a side / axial positioning block 12, and a part chip punching mechanism 13.

[0020] The base plate 1 is used to support the entire fixture and is equipped with hydraulic oil circuits.

[0021] The four-axis rotary table 2 and the four-axis tailstock 3 are arranged symmetrically on the same axis and are located at the left and right ends of the upper surface of the base plate 1, respectively. They are fixedly connected by fasteners such as keys, pins and bolts.

[0022] The connecting plate 4 has two sets, symmetrically arranged, which are fixedly connected to the rotating shafts of the four-axis turntable 2 and the four-axis tailstock 3 by keys, pins and bolts respectively.

[0023] The fixture base plate 5 is equipped with hydraulic oil circuits and oil circuit interfaces. The middle part is equipped with a first clearance groove 501, a second clearance groove 502 and a third clearance groove 503 to avoid the cutting tool from falling. Both ends are fixedly connected to the connecting plate 4 respectively, and are fixedly connected to the two sets of connecting plates 4 as one unit. It can rotate under the drive of the four-axis rotary table 2.

[0024] There are three bottom positioning blocks 6, arranged in a triangular pattern in the middle of the fixture base plate 5, which match the bracket to be processed and are located on one side of the first clearance groove 501, the second clearance groove 502 and the third clearance groove 503 respectively.

[0025] The main pressing oil cylinder 7 is matched with the bottom positioning block 6 and has three groups, which are arranged on the outer side of the three bottom positioning blocks 6, including the first pressing oil cylinder 701, the second pressing oil cylinder 702 and the third pressing oil cylinder 703; the first pressing oil cylinder 701 and the second pressing oil cylinder 702 are arranged on one side of the upper end face of the clamp base plate 5, the first pressing oil cylinder 701 is close to the four-axis tail seat 3 and is located outside the first air avoiding groove 501, is arranged obliquely to the right towards the opposite side, the second pressing oil cylinder 702 is close to the four-axis rotary table 2 and is arranged obliquely upwards towards the left side of the second air avoiding groove 502; the third pressing oil cylinder 703 is arranged in the middle of the other side of the upper end face of the clamp base plate 5 and is located outside the third air avoiding groove 503, is arranged towards the first pressing oil cylinder 701, and the spacing between the third pressing oil cylinder 703 and the first pressing oil cylinder 701 is greater than the spacing between the first pressing oil cylinder 701 and the second pressing oil cylinder 702; thus, the first pressing oil cylinder 701, the second pressing oil cylinder 702 and the third pressing oil cylinder 703 form a triangular layout.

[0026] The pressing plate 8 is matched with the main pressing oil cylinder 6 and has three, which are fixedly installed at the telescopic ends of the first pressing oil cylinder 701, the second pressing oil cylinder 702 and the third pressing oil cylinder 703 respectively.

[0027] The gas detection device 9 is arranged at the front end of the third pressing oil cylinder 703, and in the embodiment, the gas detection device 9 is assembled on the bottom positioning block 7 close to the third pressing oil cylinder 703.

[0028] The auxiliary supporting cylinder 10 is arranged between the second pressing oil cylinder 702 and the third pressing oil cylinder 703 and close to the four-axis rotary table 2, the telescopic end of the auxiliary supporting cylinder 10 extends upwards from the clamp base plate 5, and an auxiliary pressing plate is arranged above the telescopic end of the auxiliary supporting cylinder 8.

[0029] The elastic floating positioning mechanism 11 includes a lateral elastic floating positioning mechanism 111 and an axial elastic floating positioning mechanism 112; the lateral elastic floating positioning mechanism 111 is arranged on the right side of the third pressing oil cylinder 703; the axial elastic floating positioning mechanism 112 is arranged on the opposite side of the auxiliary supporting cylinder 10, and for matching the support structure, the axial elastic floating positioning mechanism is arranged between the first air avoiding groove 501 and the third air avoiding groove 503 and outside the first air avoiding groove 501.

[0030] The side / axial positioning block 12 is arranged between the first pressing oil cylinder 701 and the second pressing oil cylinder 702 and corresponds to the lateral elastic floating positioning mechanism 111.

[0031] The part chip punching mechanism 13 is symmetrically arranged on both sides of the clamp base plate 5 and communicates with the external gas source. The chip punching mechanism 13 includes a mounting plate 131 and a plurality of jet nozzles 132 uniformly distributed on the mounting plate 131, and the jet nozzles 132 communicate with the external gas source.

[0032] The working process of the automatic hydraulic clamp for processing EA288-535A engine brackets in this utility model is as follows:

[0033] Based on the shape of the EA288-535A engine bracket to be processed, the bottom positioning block 7, the elastic floating positioning mechanism 11, and the locating block 12 are fixed on the fixture base plate 5, such as... Figure 2 As shown, one upper end of the bracket is supported by the third clamping cylinder 703, and the lower end of the bracket is supported by the first clamping cylinder 701 and the second clamping cylinder 702, forming a triangular clamping layout. The bottom of the bracket to be processed is positioned by the bottom positioning block 7, and the outside of the bracket to be processed is positioned by the elastic floating positioning mechanism 11 and the side / axial positioning block 12. The bracket to be processed is placed on the top of the bottom positioning block 7, so that the bracket to be processed is fitted with the elastic floating positioning mechanism 11 and the side / axial positioning block 12, which facilitates the rapid positioning of the part to be processed.

[0034] After the parts are correctly clamped and the machine tool is started, the three clamping cylinders 6 first clamp the two ends of the bracket, then the auxiliary support cylinder 10 lifts up and supports the arched part of the bracket, and then the auxiliary cylinder clamps it. Subsequently, the air detection device 8 checks whether the parts are clamped in place. After the clamping is correct, the machine tool starts processing. The four-axis rotary table 2 drives the fixture base plate 5 to rotate. When it is at 0°, the milling, drilling and tapping of the front of the workpiece and the tapping of the three threaded holes are completed. Then, when the rotary table rotates to 180°, the milling of the back of the workpiece and the chamfering of each hole are completed. At this point, all processing steps are completed.

[0035] After processing, gas enters the chip removal mechanism 13 and is ejected from the jet nozzle to blow off the chips generated during processing on the fixture base plate 5, thus preventing the fixture base plate 5 from becoming cluttered and facilitating the next processing of the support to be processed.

[0036] This utility model's automatic fixture, equipped with error-proofing and air-detection functions, significantly improves product qualification rates, saves processing costs, and increases production efficiency, making it highly practical in real-world applications. Furthermore, this fixture can complete machining at various angles along the circumference; all machining steps are completed when the turntable is at 0° and 180°. This not only shortens the processing flow and greatly improves production efficiency but also effectively increases equipment utilization, thereby saving investment costs and increasing profits for the enterprise.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic hydraulic fixture for machining an EA288-535A engine bracket, characterized by: The clamp comprises a large base plate provided with an oil channel, a four-axis rotary table, a four-axis tailstock, a clamp base plate, a bottom surface positioning block, a pressing oil cylinder, an elastic floating positioning mechanism, a side / axial positioning block; The four-axis rotary table and the four-axis tailstock are coaxially and symmetrically arranged at two ends of the upper end surface of the large base plate; The clamp base plate is connected with the four-axis rotary table and the four-axis tailstock at two ends respectively; The bottom surface positioning block has three and is arranged in a triangular layout at the middle part of the clamp base plate and is matched with the support to be machined; The pressing oil cylinder is matched with the bottom surface positioning block and has three groups and is arranged outside the bottom surface positioning block, comprising a first pressing oil cylinder, a second pressing oil cylinder and a third pressing oil cylinder; the first pressing oil cylinder and the second pressing oil cylinder are arranged at one side of the upper end surface of the clamp base plate, the first pressing oil cylinder is close to the four-axis tailstock and is arranged obliquely to the right towards the opposite side, the second pressing oil cylinder is close to the four-axis rotary table and is arranged obliquely upwards towards the left; the third pressing oil cylinder is arranged at the middle part of the other side of the upper end surface of the clamp base plate and is arranged towards the first pressing oil cylinder, and the spacing between the third pressing oil cylinder and the first pressing oil cylinder is greater than the spacing between the first pressing oil cylinder and the second pressing oil cylinder; the extension end of the pressing oil cylinder is provided with a pressing plate; The elastic floating positioning mechanism comprises a lateral elastic floating positioning mechanism arranged at the right side of the third pressing oil cylinder and an axial elastic floating positioning mechanism arranged between the first pressing oil cylinder and the third pressing oil cylinder; The side / axial positioning block is arranged between the first pressing oil cylinder and the second pressing oil cylinder and corresponds to the lateral elastic floating positioning mechanism.

2. The automatic hydraulic fixture for machining the engine support of EA288-535A as claimed in claim 1, characterized in that: The clamp base plate is provided with a hydraulic oil channel and an oil channel interface and is provided with a first air avoidance groove, a second air avoidance groove and a third air avoidance groove at the middle part; The bottom surface positioning block is arranged at one side of the first air avoidance groove, the second air avoidance groove and the third air avoidance groove respectively.

3. The automatic hydraulic fixture for machining the engine support of EA288-535A as claimed in claim 2, characterized in that: The clamp is provided with an auxiliary supporting cylinder; the auxiliary supporting cylinder is arranged between the second pressing oil cylinder and the third pressing oil cylinder and is close to the four-axis rotary table, and the extension end of the auxiliary supporting cylinder extends upwards from the clamp base plate.

4. The automatic hydraulic fixture for machining the engine support of EA288-535A as claimed in claim 3, characterized in that: The axial elastic floating positioning mechanism is arranged at two sides opposite to the auxiliary supporting cylinder and is arranged outside the first air avoidance groove between the first air avoidance groove and the third air avoidance groove respectively.

5. The automatic hydraulic fixture for machining the engine support EA288-535A as claimed in claim 1, characterized in that: The clamp is provided with a gas detection device; the gas detection device is arranged on the bottom surface positioning block close to the third pressing oil cylinder.

6. The automatic hydraulic fixture for machining the engine support EA288-535A according to claim 1, characterized in that: The two ends of the clamp base plate are connected with the four-axis rotary table and the four-axis tailstock through a connecting plate; The connecting plate is fixedly connected with the rotating shafts of the four-axis rotary table and the four-axis tailstock.

7. The automatic hydraulic fixture for machining the engine support EA288-535A according to claim 1, characterized in that: The clamp comprises a part punching chip mechanism; the part punching chip mechanism is symmetrically arranged at two sides of the clamp base plate and comprises a mounting plate and a plurality of air nozzles uniformly distributed on the mounting plate; the air nozzles are in communication with an external air source.

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