Flange part turn-milling combined machining tool with angular recognition capacity

Abstract

A turning and milling combined machining tool for flange parts with angular recognition capacity belongs to the technical field of aero-engine part manufacturing and comprises a clamp body, a first angular transmission mechanism and a second angular transmission mechanism. The clamp main body is fixedly clamped and matched with a three-jaw chuck of turning and milling machining center equipment; the first angular transfer mechanism is arranged on the back surface of the clamp main body, and the first angular transfer mechanism is in automatic centering clamping fit with one jaw of the three-jaw chuck serving as an angular recognition jaw; the second angular transfer mechanism is arranged on the front face of the clamp body and matched with the part in an angular positioning and clamping mode. The turning and milling combined machining method is particularly suitable for turning and milling combined machining of forging and casting parts of complex flange structures, quantitative transmission of equipment from angular zero points to the parts is met, multiple working procedures can be combined into a numerical control one-time turning and milling combined machining working procedure, the part machining quality is improved, the working procedure number, the tool number and the machining cost are reduced, the machining period is shortened, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of manufacturing of aero-engine parts, and particularly relates to a fixture for turning and milling composite machining of flange parts with angular recognition ability. Background Technique

[0002] Among the external pipeline connectors of aero-engines, there are many relatively complex flange-structured forged and cast parts. These parts usually have angular requirements in terms of structural space. For example Figure 8 the shown parts, and during the machining process of the parts, multiple processes such as turning, milling, and drilling are also required.

[0003] However, multiple processes such as turning, milling, and drilling generally require separate production of special fixtures. Not only are there a large number of processes, but also a large number of fixtures are required. They are also greatly affected by the blank state of the forged and cast parts, and will also lead to problems such as long overall machining cycle, low machining efficiency, high machining cost, and low machining quality of the parts. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the invention provides a fixture for turning and milling composite machining of flange parts with angular recognition ability, which is particularly suitable for the turning and milling composite machining of complex flange-structured forged and cast parts. It can meet the quantitative transfer of the angular zero point of the equipment to the parts, can combine multiple processes into a numerical control one-time turning and milling composite machining process, effectively reduce the number of processes, the number of fixtures and the machining cost while improving the machining quality of the parts, further shorten the machining cycle, and thus effectively improve the machining efficiency.

[0005] To achieve the above object, the invention adopts the following technical scheme: A fixture for turning and milling composite machining of flange parts with angular recognition ability, including a fixture main body, a first angular transfer mechanism and a second angular transfer mechanism; the fixture main body is fixedly clamped and matched with the three-jaw chuck of the turning and milling machining center equipment; the first angular transfer mechanism is arranged on the back of the fixture main body, and the first angular transfer mechanism is automatically centered and clamped with one of the jaws of the three-jaw chuck as the angular recognition jaw; the second angular transfer mechanism is arranged on the front of the fixture main body, and the second angular transfer mechanism is angularly positioned and clamped with the part.

[0006] The fixture main body includes a disc body and a clamping column; the disc body adopts a disc-type structure; the clamping column adopts a cylindrical structure, and the clamping column is coaxially and fixedly arranged at the center of the back of the disc body; the clamping column is fixedly clamped on the three-jaw chuck of the turning and milling machining center equipment.

[0007] The first angular transmission mechanism includes a first chuck jaw clamping head, a second chuck jaw clamping head, a first left - right threaded lead screw, and a first clamping head guiding chute; the first clamping head guiding chute is arranged on the back of the disc body, and a first bearing seat is fixedly installed at the middle of the first clamping head guiding chute; the center of the first left - right threaded lead screw is rotationally connected to the first bearing seat; the first chuck jaw clamping head is arranged in the first clamping head guiding chute and is threadedly sleeved on the positive - threaded section of the first left - right threaded lead screw, and a first clamping head limiting baffle is fixedly installed between the first chuck jaw clamping head and the disc body; the second chuck jaw clamping head is arranged in the first clamping head guiding chute and is threadedly sleeved on the reverse - threaded section of the first left - right threaded lead screw, and the second chuck jaw clamping head and the first chuck jaw clamping head are mirror - symmetrically distributed with respect to the first bearing seat, and a second clamping head limiting baffle is fixedly installed between the second chuck jaw clamping head and the disc body.

[0008] The angular recognition claw is automatically centered and clamped between the first chuck jaw clamping head and the second chuck jaw clamping head.

[0009] The second angular transmission mechanism includes a first part angular positioning clamping head, a second part angular positioning clamping head, a second left - right threaded lead screw, and a second clamping head guiding chute; the second clamping head guiding chute is arranged on the front of the disc body, and the second clamping head guiding chute is parallel to the first clamping head guiding chute, and a second bearing seat is fixedly installed at the middle of the second clamping head guiding chute; the center of the second left - right threaded lead screw is rotationally connected to the second bearing seat, and the second left - right threaded lead screw is parallel to the first left - right threaded lead screw; the first part angular positioning clamping head is arranged in the second clamping head guiding chute and is threadedly sleeved on the positive - threaded section of the second left - right threaded lead screw, and a third clamping head limiting baffle is fixedly installed between the first part angular positioning clamping head and the disc body; the second part angular positioning clamping head is arranged in the second clamping head guiding chute and is threadedly sleeved on the reverse - threaded section of the second left - right threaded lead screw, and the second part angular positioning clamping head and the first part angular positioning clamping head are mirror - symmetrically distributed with respect to the second bearing seat, and a fourth clamping head limiting baffle is fixedly installed between the second part angular positioning clamping head and the disc body.

[0010] The part is angularly positioned and clamped between the first part angular positioning clamping head and the second part angular positioning clamping head.

[0011] The structural forms of the first part angular positioning clamping head and the second part angular positioning clamping head are adaptively designed according to the structural form of the part.

[0012] A first part auxiliary clamping bolt is arranged between the first part angular positioning clamping head and the part, and the first part auxiliary clamping bolt is parallel to the second left - right threaded lead screw.

[0013] A second part auxiliary clamping bolt is arranged between the second part angular positioning and clamping head and the part, and the second part auxiliary clamping bolt is distributed in parallel with the second positive and reverse thread lead screw.

[0014] Advantages of the present invention: The present invention provides a machining tool for turning and milling composite machining of flange parts with angular recognition ability, which is particularly suitable for turning and milling composite machining of complex flange structure forging and casting parts. It can meet the quantitative transfer of the angular zero point of the equipment to the part, and can combine multiple processes into a single CNC turning and milling composite machining process. While improving the machining quality of the part, it effectively reduces the number of processes, the number of toolings and the machining cost, further shortens the machining cycle, and thus effectively improves the machining efficiency. Description of the drawings

[0015] Figure 1 It is a schematic structural diagram (viewpoint one) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention; Figure 2 It is a schematic structural diagram (viewpoint two) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention; Figure 3 It is a schematic structural diagram (viewpoint three) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention; Figure 4 It is a schematic structural diagram (viewpoint one) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention when it is clamped and cooperated with the chuck jaw; Figure 5 It is a schematic structural diagram (viewpoint four) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention when it is clamped and cooperated with the chuck jaw; Figure 6 It is a schematic structural diagram (viewpoint three) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention when it is clamped and cooperated with the chuck jaw; Figure 7 It is a schematic structural diagram (viewpoint five) of the machining tool for turning and milling composite machining of flange parts with angular recognition ability of the present invention when it is clamped and cooperated with the chuck jaw; Figure 8 It is a schematic structural diagram of a flange structure forging and casting part; In the figure, 1 - angular recognition claw, 2 - part, 3 - disc body, 4 - clamping column, 5 - first chuck jaw clamping head, 6 - second chuck jaw clamping head, 7 - first left - right threaded lead screw, 8 - first clamping head guiding chute, 9 - first bearing block, 10 - first clamping head limit baffle, 11 - second clamping head limit baffle, 12 - first part angular positioning clamping head, 13 - second part angular positioning clamping head, 14 - second left - right threaded lead screw, 15 - second clamping head guiding chute, 16 - second bearing block, 17 - third clamping head limit baffle, 18 - fourth clamping head limit baffle, 19 - first part auxiliary clamping bolt, 20 - second part auxiliary clamping bolt. Detailed implementation mode

[0016] The following further elaborates on the present invention in detail in conjunction with the attached drawings and specific embodiments.

[0017] As Figures 1 to 7 shown, a fixture for turning - milling composite machining of flange - type parts with angular recognition ability includes a fixture main body, a first angular transmission mechanism and a second angular transmission mechanism; the fixture main body is fixedly clamped and matched with the three - jaw chuck of the turning - milling machining center equipment; the first angular transmission mechanism is arranged on the back of the fixture main body, and the first angular transmission mechanism is automatically centered and clamped with one of the jaws of the three - jaw chuck serving as the angular recognition claw 1; the second angular transmission mechanism is arranged on the front of the fixture main body, and the second angular transmission mechanism is angularly positioned and clamped with the part 2.

[0018] The fixture main body includes a disc body 3 and a clamping column 4; the disc body 3 adopts a disc - type structure; the clamping column 4 adopts a cylindrical structure, and the clamping column 4 is coaxially and fixedly arranged at the center of the back of the disc body 3; the clamping column 4 is fixedly clamped on the three - jaw chuck of the turning - milling machining center equipment.

[0019] The first angular transmission mechanism includes a first chuck jaw clamping head 5, a second chuck jaw clamping head 6, a first left - right threaded lead screw 7 and a first clamping head guiding chute 8; the first clamping head guiding chute 8 is arranged on the back of the disc body 3, and a first bearing block 9 is fixedly installed at the middle of the first clamping head guiding chute 8; the center of the first left - right threaded lead screw 7 is rotationally connected with the first bearing block 9; the first chuck jaw clamping head 5 is arranged in the first clamping head guiding chute 8 and is threadedly sleeved on the positive - threaded section of the first left - right threaded lead screw 7, and a first clamping head limit baffle 10 is fixedly installed between the first chuck jaw clamping head 5 and the disc body 3; the second chuck jaw clamping head 6 is arranged in the first clamping head guiding chute 8 and is threadedly sleeved on the reverse - threaded section of the first left - right threaded lead screw 7, and the second chuck jaw clamping head 6 and the first chuck jaw clamping head 5 are mirror - symmetrically distributed with respect to the first bearing block 9, and a second clamping head limit baffle 11 is fixedly installed between the second chuck jaw clamping head 6 and the disc body 3.

[0020] The angular recognition claw 1 is automatically centered and clamped between the first chuck jaw clamping head 5 and the second chuck jaw clamping head 6.

[0021] The second angular transmission mechanism includes a first part angular positioning and clamping head 12, a second part angular positioning and clamping head 13, a second left - and - right threaded lead screw 14, and a second clamping head guiding chute 15; the second clamping head guiding chute 15 is arranged on the front surface of the disk body 3, and the second clamping head guiding chute 15 is distributed in parallel with the first clamping head guiding chute 8. A second bearing seat 16 is fixedly installed at the middle of the second clamping head guiding chute 15; the center of the second left - and - right threaded lead screw 14 is rotationally connected to the second bearing seat 16, and the second left - and - right threaded lead screw 14 is distributed in parallel with the first left - and - right threaded lead screw 7; the first part angular positioning and clamping head 12 is arranged in the second clamping head guiding chute 15 and is threadedly sleeved on the positive - threaded section of the second left - and - right threaded lead screw 14. A third clamping head limiting baffle 17 is fixedly installed between the first part angular positioning and clamping head 12 and the disk body 3; the second part angular positioning and clamping head 13 is arranged in the second clamping head guiding chute 15 and is threadedly sleeved on the reverse - threaded section of the second left - and - right threaded lead screw 14. The second part angular positioning and clamping head 13 and the first part angular positioning and clamping head 12 are symmetrically distributed with respect to the second bearing seat 16 in a mirror image. A fourth clamping head limiting baffle 18 is fixedly installed between the second part angular positioning and clamping head 13 and the disk body 3.

[0022] The part 2 is angularly positioned and clamped between the first part angular positioning and clamping head 12 and the second part angular positioning and clamping head 13.

[0023] The structural forms of the first part angular positioning and clamping head 12 and the second part angular positioning and clamping head 13 are adaptively designed according to the structural form of the part 2.

[0024] A first part auxiliary clamping bolt 19 is arranged between the first part angular positioning and clamping head 12 and the part 2, and the first part auxiliary clamping bolt 19 is distributed in parallel with the second left - and - right threaded lead screw 14.

[0025] A second part auxiliary clamping bolt 20 is arranged between the second part angular positioning and clamping head 13 and the part 2, and the second part auxiliary clamping bolt 20 is distributed in parallel with the second left - and - right threaded lead screw 14.

[0026] The following describes a primary usage process of the present invention with reference to the accompanying drawings: First, zero the angular zero point of the turning and milling center equipment, and use one jaw of the three-jaw chuck as the angular identification jaw 1. The angular identification jaw 1 is fixedly positioned relative to the angular zero point of the equipment. Then, fix and clamp the tooling of the present invention to the three-jaw chuck through the clamping column 4. At the same time, screw the first forward and reverse threaded lead screw 7 to control the first chuck jaw clamping head 5 and the second chuck jaw clamping head 6 to automatically center and clamp the angular identification jaw 1. At this time, the angular identification jaw 1 completes the transfer of the quantitative angular relationship with the fixture body through the first angular transmission mechanism.

[0027] Next, place the part 2 between the first part angular positioning and clamping head 12 and the second part angular positioning and clamping head 13. Then, screw the second forward and reverse threaded lead screw 14 to control the first part angular positioning and clamping head 12 and the second part angular positioning and clamping head 13 to angularly position and clamp the part 2. After that, use the first part auxiliary clamping bolt 19 and the second part auxiliary clamping bolt 20 to assist in clamping and fixing the part 2. At this time, the angular identification jaw 1 successively completes the transfer of the quantitative angular relationship with the part 2 through the first angular transmission mechanism, the fixture body, and the second angular transmission mechanism, finally achieving the purpose of transferring the angular zero point of the equipment to the angular end of the part 2 in a fixed manner. The turning and milling processing based on the angular zero point of the equipment is equivalent to the turning and milling processing based on the angular end of the part 2. Subsequently, the part 2 can be subjected to numerical control one-time turning and milling composite processing by the turning and milling center.

[0028] The solutions in the embodiments are not intended to limit the protection scope of the present invention. Any equivalent implementation or modification without departing from the present invention is included in the protection scope of the present invention.

Claims

1. A fixture for turning and milling composite machining of flange parts with angular recognition ability, characterized in that: It includes a fixture body, a first angular transmission mechanism and a second angular transmission mechanism; the fixture body is fixedly clamped and matched with the three-jaw chuck of the turning-milling machining center equipment; the first angular transmission mechanism is arranged on the back of the fixture body, and the first angular transmission mechanism is automatically centered and clamped with one of the jaws of the three-jaw chuck serving as an angular identification jaw; the second angular transmission mechanism is arranged on the front of the fixture body, and the second angular transmission mechanism is angularly positioned and clamped with the part.

2. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 1, wherein: The fixture body includes a disc body and a clamping column; the disc body adopts a disc structure; the clamping column adopts a cylindrical structure, and the clamping column is coaxially and fixedly arranged at the center of the back of the disc body; the clamping column is fixedly clamped on the three-jaw chuck of the turning-milling machining center equipment.

3. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 2, characterized in that: The first angular transmission mechanism includes a first chuck jaw clamping head, a second chuck jaw clamping head, a first right-left threaded lead screw and a first clamping head guiding chute; the first clamping head guiding chute is arranged on the back of the disc body, and a first bearing seat is fixedly installed at the middle of the first clamping head guiding chute; the center of the first right-left threaded lead screw is rotationally connected with the first bearing seat; the first chuck jaw clamping head is arranged in the first clamping head guiding chute and is threadedly sleeved on the positive threaded section of the first right-left threaded lead screw, and a first clamping head limiting baffle is fixedly installed between the first chuck jaw clamping head and the disc body; the second chuck jaw clamping head is arranged in the first clamping head guiding chute and is threadedly sleeved on the reverse threaded section of the first right-left threaded lead screw, and the second chuck jaw clamping head and the first chuck jaw clamping head are mirror-symmetrically distributed relative to the first bearing seat, and a second clamping head limiting baffle is fixedly installed between the second chuck jaw clamping head and the disc body.

4. The fixture for turning and milling compound machining of flange parts with angular recognition ability according to claim 3, characterized in that: The angular identification jaw is automatically centered and clamped between the first chuck jaw clamping head and the second chuck jaw clamping head.

5. The fixture for the turning-milling composite machining of flange parts with angular recognition ability according to claim 3, wherein: The second angular transmission mechanism includes a first part angular positioning clamping head, a second part angular positioning clamping head, a second right-left threaded lead screw and a second clamping head guiding chute; the second clamping head guiding chute is arranged on the front of the disc body, and the second clamping head guiding chute is parallel to the first clamping head guiding chute, and a second bearing seat is fixedly installed at the middle of the second clamping head guiding chute; the center of the second right-left threaded lead screw is rotationally connected with the second bearing seat, and the second right-left threaded lead screw is parallel to the first right-left threaded lead screw; the first part angular positioning clamping head is arranged in the second clamping head guiding chute and is threadedly sleeved on the positive threaded section of the second right-left threaded lead screw, and a third clamping head limiting baffle is fixedly installed between the first part angular positioning clamping head and the disc body; the second part angular positioning clamping head is arranged in the second clamping head guiding chute and is threadedly sleeved on the reverse threaded section of the second right-left threaded lead screw, and the second part angular positioning clamping head and the first part angular positioning clamping head are mirror-symmetrically distributed relative to the second bearing seat, and a fourth clamping head limiting baffle is fixedly installed between the second part angular positioning clamping head and the disc body.

6. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 5, characterized in that: The part is angularly positioned and clamped between the first part angular positioning clamping head and the second part angular positioning clamping head.

7. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 5, characterized in that: The structural forms of the first part angular positioning and clamping head and the second part angular positioning and clamping head are adaptively designed according to the structural form of the part.

8. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 5, characterized in that: A first part auxiliary clamping bolt is arranged between the first part angular positioning and clamping head and the part, and the first part auxiliary clamping bolt is parallel to the second left and right threaded lead screw.

9. The fixture for turning and milling composite machining of flange parts with angular recognition ability according to claim 5, characterized in that: A second part auxiliary clamping bolt is arranged between the second part angular positioning and clamping head and the part, and the second part auxiliary clamping bolt is parallel to the second left and right threaded lead screw.

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