Simulated cutting loading device of horizontal milling and turning combined machining center

Abstract

The utility model belongs to the technical field of numerical control machine tool performance testing, and discloses a simulation cutting loading device of a horizontal milling and turning combined machining center. The left end of the three-way static and dynamic force loading mechanism is fixedly connected with the right end of the first supporting shaft through a flange plate, the right end of the three-way static and dynamic force loading mechanism is fixedly connected with the left end of the second supporting shaft through a flange plate, and the left end of the first supporting shaft and the right end of the second supporting shaft are clamped on a three-jaw chuck of a workpiece main shaft of the horizontal milling and turning combined machining center. The axis of the first supporting shaft and the axis of the second supporting shaft are coaxially arranged with the radial force axis of the three-way static and dynamic force loading mechanism, the simulated cutter handle end of the cutter head simulated cutter handle and a machine tool cutter head are fixedly installed, and a square flange of the cutter head simulated cutter handle is rigidly connected with a loading unit of the three-way static and dynamic force loading mechanism through a hooke joint connecting plate. The lower tool turret simulation tool apron is fixedly installed on a lower tool turret of a machine tool and is rigidly connected with a loading unit of the three-way static and dynamic force loading mechanism through a hooke joint connecting plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control machine tool performance test technical field relates to a horizontal milling and turning composite machining center simulation cutting loading device. BACKGROUND

[0002] Horizontal milling and turning composite machining center is based on lathe, has the milling main shaft and the turning main shaft, has the automatic tool changer composite machine tool with the milling, turning, drilling, boring and other cutting functions, "one clamping, multi-process processing" characteristics. At present, with the increasing demand for high performance manufacturing in the world, horizontal milling and turning composite machining center has been highly valued by all countries due to its excellent machining performance and flexibility, and has become a major equipment that they compete to develop. Compared with foreign advanced horizontal milling and turning composite machining center, the development time of horizontal milling and turning composite machining center in China is short, the technology is not mature, and the performance degradation data are scarce, which leads to the gap in performance, especially in precision and precision retention. However, there is still a lack of a device that can simulate the cutting force loading of horizontal milling and turning composite machining center under service conditions, which greatly limits the research of machine tool accelerated degradation test. Therefore, it is urgent to invent a milling and turning composite machining center simulation cutting loading device to realize rapid, economical and controllable simulation cutting load.

[0003] At present, the experimental device for simulating cutting force loading of vertical machining center has been preliminarily explored, and there is still a lack of research on simulating cutting force loading device for horizontal milling and turning composite machining center. In 2014, Liang Rujun of Nanjing University of Aeronautics and Astronautics disclosed a three-dimensional dynamic cutting force follow-up simulation loading device for vertical machining center in patent CN104568485A, which is used for measuring and analyzing the deformation error of machine tool caused by cutting force. In 2018, Wang Liping of Tsinghua University disclosed a parallel mechanism for static and dynamic force loading of three-axis vertical machining center in patent CN109571140A to simulate the cutting state of machining center. In 2020, Zhang Yimin of Northeast University disclosed a vertical numerical control milling and turning simulation cutting force loading device and its use method in patent CN109000947A, which can simulate the stress condition in the actual machining process of machine tool and effectively reduce the testing cost of machine tool.

[0004] Through the analysis of the related research on existing machine tool simulation cutting loading test device, it is found that: (1) the application object of the current related test device is limited to vertical machining center, and there is no loading device suitable for testing horizontal milling and turning composite machining center; (2) the current machine tool loading test device cannot comprehensively and effectively simulate the actual working state of the machine tool under complex working conditions, which affects the accuracy and applicability of the test results. UTILITY MODEL CONTENT

[0005] The utility model provides a horizontal milling-lathe compound machining center simulation cutting loading device, which can effectively simulate the stress condition of the machine tool in the actual service cutting process.

[0006] The utility model discloses a technical scheme:

[0007] A horizontal milling-lathe compound machining center simulation cutting loading device, comprising a three-way static and dynamic force loading mechanism 1, a milling head simulation tool handle 2, a lower tool tower simulation tool seat 3, a hook hinge connecting plate 4, a first support shaft 5, a second support shaft 6, a first flange plate 7 and a second flange plate 8.

[0008] The three-way static and dynamic force loading mechanism 1 comprises a loading tooling 9, an axial servo electric cylinder 10, a first radial servo electric cylinder 11, a second radial servo electric cylinder 12, a mounting bottom plate 13, a first mounting side plate 14, a second mounting side plate 15, an axial load connecting plate 16, a first radial load connecting plate 17, a second radial load connecting plate 18, a loading unit 19, a three-dimensional force sensor 20 and a rigid hook hinge 21; the loading tooling 9 is a box body structure with an open upper end and front end, which is welded by a tooling plate; one end of the axial servo electric cylinder 10 is fixedly installed on the loading tooling 9 through the mounting bottom plate 13, and the other end is installed in a T-shaped groove of the loading unit 19 through the axial load connecting plate 16; one end of the first radial servo electric cylinder 11 is fixedly installed on the loading tooling 9 through the first mounting side plate 14, and the other end is installed in the T-shaped groove of the loading unit 19 through the first radial load connecting plate 17; one end of the second radial servo electric cylinder 12 is fixedly installed on the loading tooling 9 through the second mounting side plate 15, and the other end is installed in the T-shaped groove of the loading unit 19 through the second radial load connecting plate 18; the axial load connecting plate 16, the first radial load connecting plate 17 and the second radial load connecting plate 18 are tightly matched with the loading unit 19 in the output force direction and have a gap in the non-output force direction; the three-dimensional force sensor 20 is installed at the upper end of the loading unit 19, and the upper end of the three-dimensional force sensor 20 is fixedly connected with the rigid hook hinge 21.

[0009] The left end of the three-way static and dynamic force loading mechanism 1 is fixedly connected with the right end of the first supporting shaft 5 through the first flange plate 7, and the right end thereof is fixedly connected with the left end of the second supporting shaft 6 through the second flange plate 8; the left end of the first supporting shaft 5 and the right end of the second supporting shaft 6 are respectively clamped on the three-jaw chuck of the workpiece spindle of the horizontal milling-lathe combined machining center, wherein the workpiece spindle comprises a workpiece main spindle and a workpiece auxiliary spindle; the axis of the first supporting shaft 5 and the second supporting shaft 6 is coaxially arranged with the radial force axis of the three-way static and dynamic force loading mechanism 1; the simulation tool shank end of the milling head simulation tool shank 2 is fixedly installed with the milling head of the machine tool, and the square flange end of the milling head simulation tool shank 2 is rigidly connected with the loading unit 19 of the three-way static and dynamic force loading mechanism 1 through the hooke joint connecting plate 4; the lower tool tower simulation tool seat 3 is fixedly installed on the lower tool tower of the machine tool and is rigidly connected with the loading unit 19 of the three-way static and dynamic force loading mechanism 1 through the hooke joint connecting plate 4.

[0010] The utility model discloses beneficial effects:

[0011] 1) the utility model provides a horizontal milling-lathe combined machining center simulation cutting loading device can realize horizontal milling-lathe combined machining center's multiple freedom, multipoint, servo loading, has saved time and manpower cost, filled the blank of prior art.

[0012] 2) can simulate the loading force and impact force suffered in the actual machining process of machine tool, and can simultaneously generate X, Y, Z three direction's loading force and impact force, does not need to consume material physical object and processing tool, has saved the cost of machine tool performance test effectively. DRAWINGS

[0013] Figure 1 It is the milling head loading structure schematic drawing of the horizontal milling-lathe combined machining center simulation cutting loading device of the utility model embodiment;

[0014] Figure 2 It is the three-way static and dynamic force loading mechanism assembly drawing of the utility model embodiment;

[0015] Figure 3 It is the loading unit partial schematic view of the utility model embodiment;

[0016] Figure 4 It is the milling head simulation tool shank structure schematic view of the utility model embodiment;

[0017] Figure 5 It is the lower tool tower simulation tool seat structure schematic view of the utility model embodiment;

[0018] Figure 6 It is the hooke joint connecting plate structure schematic view of the utility model embodiment;

[0019] Figure 7The utility model discloses a horizontal milling and turning composite machining center simulation cutting loading device's lower knife tower loading structure schematic diagram.

[0020] In the figure: 1 three static and dynamic force loading mechanism, 2 milling head simulation handle, 3 lower knife tower simulation tool holder, 4 hooke joint connecting plate, 5 first support shaft, 6 second support shaft, 7 first flange, 8 second flange, 9 loading tool, 10 axial servo electric cylinder, 11 first radial servo electric cylinder, 12 second radial servo electric cylinder, 13 installation bottom plate, 14 first installation side plate, 15 second installation side plate, 16 axial load connecting plate, 17 first radial connecting plate, 18 second radial connecting plate, 19 loading unit, 20 three-dimensional force sensor, 21 rigid hooke joint. DETAILED DESCRIPTION

[0021] The utility model discloses a horizontal milling and turning composite machining center simulation cutting loading device's lower knife tower loading structure schematic diagram.

[0022] With a certain type horizontal milling and turning composite machining center as an example, the embodiment of the utility model is explained in detail. The horizontal milling and turning composite machining center is provided with a milling head, a lower knife tower and double workpiece spindles.

[0023] A horizontal milling and turning composite machining center simulation loading device comprises a three-direction static and dynamic force loading mechanism 1, a milling head simulation handle 2, a lower knife tower simulation tool holder 3, a hooke joint connecting plate 4, a first support shaft 5, a second support shaft 6, a first flange 7 and a second flange 8. The left end of the three-direction static and dynamic force loading mechanism 1 is fixedly connected with the right end of the first support shaft 5 through the first flange 7, and the right end is fixedly connected with the left end of the second support shaft 6 through the second flange 8. The left end of the first support shaft 5 and the right end of the first support shaft 5 are clamped in the three-jaw chuck of the workpiece spindle of the horizontal milling and turning composite machining center, wherein the workpiece spindle comprises a workpiece main spindle and a workpiece auxiliary spindle, and is used for installing and supporting the three-direction static and dynamic force loading mechanism on the horizontal milling and turning composite machining center. The axis of the first support shaft 5 and the second support shaft 6 is coaxially arranged with the radial force axis of the three-direction static and dynamic force loading mechanism 1, so as to ensure that the loading directions are consistent. When the milling head is loaded, the upper end of the milling head simulation handle 2 is fixedly installed on the machine tool milling head, and the lower end is connected with the loading unit 19 of the three-direction static and dynamic force loading mechanism 1 through the hooke joint connecting plate 4. When the lower knife tower is loaded, the lower end of the lower knife tower simulation tool holder 3 is fixedly installed on the machine tool lower knife tower, and the upper end is connected with the loading unit 19 of the three-direction static and dynamic force loading mechanism 1 through the hooke joint connecting plate 4.

[0024] It can be understood that the three-way static and dynamic force loading mechanism 1 includes a loading tool 9, an axial servo electric cylinder 10, a first radial servo electric cylinder 11, a second radial servo electric cylinder 12, a mounting bottom plate 13, a first mounting side plate 14, a second mounting side plate 15, an axial load connecting plate 16, a first radial load connecting plate 17, a second radial load connecting plate 18, a loading unit 19, a three-dimensional force sensor 20, and a rigid hooke joint 21. The loading tool 9 is composed of four tool plates which are welded together, and is in a right angle shape, used for stably mounting the servo electric cylinders, and also used for supporting and connecting the first support shaft and the second support shaft; one end of the axial servo electric cylinder 10 is fixedly mounted on the loading tool 9 through the mounting bottom plate 13, and the other end is mounted in a T-shaped groove of the loading unit 19 through the axial load connecting plate 16; one end of the first radial servo electric cylinder 11 is fixedly mounted on the loading tool 9 through the first mounting side plate 14, and the other end is mounted in the T-shaped groove of the loading unit 19 through the first radial load connecting plate 17; similarly, one end of the second radial servo electric cylinder 12 is fixedly mounted on the loading tool 9 through the second mounting side plate 15, and the other end is mounted in the T-shaped groove of the loading unit 19 through the second radial load connecting plate 18; the three-way electric cylinder acts on the loading unit 19 together, forming an overall loading system; the axial load connecting plate 16, the first radial load connecting plate 17 and the second radial load connecting plate 18 are tightly matched with the loading unit 19 in the output force direction, and have appropriate gaps in the non-output force direction, so as to avoid the interaction force between the loading components and cause damage to the loading components; the three-dimensional force sensor 20 is mounted on the upper end of the loading unit 19, and is used for monitoring the three-way force of the machine tool in real time; the upper end of the three-dimensional force sensor 20 is fixedly connected with the rigid hooke joint 21, so as to realize the angle change of the connecting point of the machine tool during movement, and effectively transmit the multi-dimensional force of the loading unit to the machine tool, and realize the monitoring and adjustment of the force.

[0025] The utility model provides a kind of brand-new horizontal milling-lathe compound machining center performance test means, by brand-new design horizontal milling-lathe compound machining center simulation cutting loading device, after with machine tool is equipped and used, can simulate the loading force and impact force suffered in actual machining process of machine tool, and X, Y, Z three directions loading force and impact force can be generated simultaneously, without consuming material physical object and processing cutter, effectively save the cost of machine tool performance test, simultaneously, the performance test result that can be obtained again meets actual situation.

[0026] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation to the utility model scope. It should be pointed out that for ordinary skilled person in the art, under the premise of not departing from the utility model concept, can also make several deformation and improvement, these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model should be according to the appended claims.

Claims

1. A simulated cutting loading device for a horizontal milling and turning composite machining center, characterized in that: The simulated cutting loading device of the horizontal milling and turning composite machining center comprises a three-directional static and dynamic force loading mechanism (1), a milling head simulated tool holder (2), a lower turret simulated tool holder (3), a Hooke's hinge connecting plate (4), a first support shaft (5), a second support shaft (6), a first flange (7), and a second flange (8); The left end of the three-way static and dynamic force loading mechanism (1) is fixedly connected to the right end of the first support shaft (5) through a first flange (7), and the right end thereof is fixedly connected to the left end of the second support shaft (6) through a second flange (8); the left end of the first support shaft (5) and the right end of the second support shaft (6) are respectively clamped on the three-jaw chuck of the workpiece spindle of the horizontal milling and turning composite machining center, wherein the workpiece spindle includes a workpiece main spindle and a workpiece sub-spindle; the axes of the first support shaft (5) and the second support shaft (6) are aligned with the three-way static and dynamic force loading mechanism (1). The simulated tool holder (2) is coaxially arranged with the radial force axis of the static and dynamic force loading mechanism (1); the simulated tool holder end of the milling head simulated tool holder (2) is fixedly installed with the milling head of the machine tool, and the square flange end of the milling head simulated tool holder (2) is rigidly connected with the loading unit (19) of the three-way static and dynamic force loading mechanism (1) through the Hooke's hinge connecting plate (4); the lower turret simulated tool holder (3) is fixedly installed on the lower turret of the machine tool, and is rigidly connected with the loading unit (19) of the three-way static and dynamic force loading mechanism (1) through the Hooke's hinge connecting plate (4).

2. The simulated cutting loading device for a horizontal milling and turning combined machining center according to claim 1 is characterized in that: The three-directional static and dynamic force loading mechanism (1) comprises a loading fixture (9), an axial servo electric cylinder (10), a first radial servo electric cylinder (11), a second radial servo electric cylinder (12), a loading unit (19), a three-dimensional force sensor (20) and a rigid Hooke's hinge (21); one end of the axial servo electric cylinder (10) is fixedly mounted on the loading fixture (9), and the other end is mounted in the T-slot of the loading unit (19); one end of the first radial servo electric cylinder (11) is fixedly mounted on the loading fixture (9), and the other end is mounted in the T-slot of the loading unit (19); one end of the second radial servo electric cylinder (12) is fixedly mounted on the loading fixture (9), and the other end is mounted in the T-slot of the loading unit (19); a three-dimensional force sensor (20) is mounted on the upper end of the loading unit (19), and the upper end of the three-dimensional force sensor (20) is fixedly connected to the rigid Hooke's hinge (21).

3. The simulated cutting loading device for a horizontal milling and turning combined machining center according to claim 2 is characterized in that: The loading tooling (9) is a box structure formed by welding tooling plates, with an upper end and a front end open.

4. The simulated cutting loading device for a horizontal milling and turning combined machining center according to claim 2 is characterized in that: The three-way static and dynamic force loading mechanism (1) further comprises a mounting base plate (13), a first mounting side plate (14), a second mounting side plate (15), an axial load connecting plate (16), a first radial load connecting plate (17) and a second radial load connecting plate (18); one end of the axial servo electric cylinder (10) is fixedly mounted on the loading fixture (9) through the mounting base plate (13), and the other end is mounted in the T-slot of the loading unit (19) through the axial load connecting plate (16); one end of the first radial servo electric cylinder (11) is fixedly mounted on the loading fixture (9) through the first mounting side plate (14). The first radial load connecting plate (17) and the second radial load connecting plate (18) are mounted on the loading fixture (9), and the other end is mounted in the T-slot of the loading unit (19) through the first radial load connecting plate (17); one end of the second radial servo electric cylinder (12) is fixedly mounted on the loading fixture (9) through the second mounting side plate (15), and the other end is mounted in the T-slot of the loading unit (19) through the second radial load connecting plate (18); the axial load connecting plate (16), the first radial load connecting plate (17), the second radial load connecting plate (18) and the loading unit (19) are tightly matched in the output force direction, and a gap is left in the non-output force direction.

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