Simulated three-way cutting force follow-up loading device of numerical control milling head

Abstract

The utility model discloses a follow-up loading device for simulating three-way cutting force of a numerical control milling head, which belongs to the technical field of performance testing of functional components of numerical control machine tools and comprises a follow-up force loading device, a lifting supporting device and the numerical control milling head, the lifting supporting device is mounted on the outer side of the follow-up force loading device, and the numerical control milling head is mounted on a milling head support. Based on actual service condition simulation of the numerical control milling head, the device can rotate along with rotation of two shafts of the numerical control milling head and load static and dynamic forces, and precision degradation data and fault data of the numerical control milling head are rapidly obtained.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control machine tool function part performance test technical field, concretely relates to a kind of simulated three-dimensional cutting force servo loading device of numerical control milling head. BACKGROUND

[0002] At present, there is still lack of device for simulating three-dimensional cutting force servo loading of numerical control milling head in China, and the existing numerical control milling head testing device can only load at fixed working position, and cannot simulate real three-dimensional cutting force working condition. Therefore, there is an urgent need for a kind of simulated three-dimensional cutting force servo loading device of numerical control milling head to load the numerical control milling head under simulated real working condition, and quickly obtain the precision degradation data and fault data of numerical control milling head. UTILITY MODEL CONTENTS

[0003] The utility model is directed to the existing device a kind of simulated three-dimensional cutting force servo loading device of numerical control milling head to solve the problems presented in the above background.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: a kind of simulated three-dimensional cutting force servo loading device of numerical control milling head, including servo power loading device, lifting support device, numerical control milling head, servo power loading device outside installation lifting support device, the mobile end of lifting support device is connected with milling head support, and the numerical control milling head is installed on milling head support.

[0005] The utility model further illustrates that the servo power loading device includes a connecting plate and a rotary workbench, an arc-shaped support frame is fixedly installed above the rotary workbench, a gear and rack pair is installed on one side of the arc-shaped edge of the arc-shaped support frame, and an arc-shaped guide rail is formed on the gear and rack pair.

[0006] The utility model further illustrates that a driving gear is engaged and connected on the gear teeth of the gear and rack pair, and a rotating shaft is fixedly connected to the middle part of the driving gear.

[0007] The utility model further illustrates that a three-dimensional support frame is installed above the connecting plate, an electric cylinder is installed in each of the three directions of the three-dimensional support frame, a hinged connecting rod is hinged to the output end of the electric cylinder, a loading support plate is hinged to the other end of the hinged connecting rod, a bearing is fixedly connected to the middle part of the upper surface of the loading support plate, and a simulated tool shank is movably connected to the center of the bearing.

[0008] The utility model further illustrates that a speed reducer is fixedly installed at the surface of the side of the connecting plate away from the arc-shaped support frame, the output end of the speed reducer penetrates through the connecting plate and is connected with the rotating shaft, and a servo motor is connected to the other end of the speed reducer.

[0009] The lower end of the loading support plate is fixed with a three-way force sensor through bolts.

[0010] The utility model further illustrates, the lifting support device includes a group of support columns which are symmetrically arranged, a group of support columns are located at the both sides of arc support frame respectively, a group of support columns are fixed with linear guide rail towards the inner side, linear guide rail is installed with ball screw pair, ball screw pair is connected through screw nut and slide plate, the linear guide rail is equipped with sliding block, the other side of sliding block is connected with slide plate, the slide plate is connected with milling head support through bolts.

[0011] Compared with the prior art, the utility model has reached the beneficial effects:

[0012] (1) through setting up follow-up force loading device, can carry out dynamic or static force simulation three -dimensional cutting force loading test to numerical control milling head, realizes the quick acquisition of numerical control milling head precision degradation data and fault data;

[0013] (2) through setting up lifting support device, can adjust the height of numerical control milling head, to adapt to different models and size's numerical control milling head, and can ensure the position of numerical control milling head in test is appropriate, and various loading test is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0015] Figure 1 It is the overall structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the utility model force loading device;

[0017] Figure 3 It is the structure schematic diagram of the utility model lifting support device;

[0018] Figure 4 It is the different working position force loading schematic diagram of the utility model;

[0019] In the figure: 1, follow-up force loading device; 2, lifting support device; 3, numerical control milling head; 4, analog tool holder; 5, bearing; 6, loading support plate; 7, three-way force sensor; 8, arc-shaped guide rail; 9, gear and rack pair; 10, arc-shaped support frame; 11, articulated connecting rod; 12, electric cylinder; 13, three-way support frame; 14, connecting plate; 15, speed reducer; 16, servo motor; 17, rotary table; 18, ball screw pair; 19, linear guide rail; 20, sliding plate; 21, milling head support; 22, sliding block; 23, support column. DETAILED DESCRIPTION

[0020] The utility model discloses technical scheme is further non-restrictive detailed description with preferred embodiment and its drawing. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled person in the art obtains without making creative labor belong to the range of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides technical scheme: a kind of analog three-way cutting force follow-up loading device of numerical control milling head, including numerical control milling head 3, follow-up force loading device 1, lifting support device 2, follow-up force loading device 1 outer side installs lifting support device 2, numerical control milling head 3 is installed on the milling head support 21 of lifting support device 2.

[0022] Reference Figure 2 Follow-up force loading device 1 includes connecting plate 14 and rotary table 17, arc-shaped support frame 10 is fixedly installed above rotary table 17, gear and rack pair 9 is installed on the arc-shaped side of arc-shaped support frame 10, and arc-shaped guide rail 8 is opened in gear and rack pair 9, and rotary table 17 rotates and drives arc-shaped support frame 10 to rotate as a whole after;

[0023] Gear and rack pair 9 is engaged with connecting plate 14, and three-way support frame 13 is installed above connecting plate 14, and electric cylinder 12 is installed on the three support frames of three-way support frame 13, and electric cylinder 12 is connected with loading support plate 6 by articulated connecting rod 11, and analog tool holder 4 is connected with loading support plate 6 by bearing 5, and after the work of electric cylinder 12, loading support plate 6 and analog tool holder 4 can be driven by articulated connecting rod 11 to exert the required dynamic or static force on numerical control milling head 3, so as to simulate the various force actions on numerical control milling head 3 in actual machining process;

[0024] Connecting plate 14 is installed on one side of speed reducer 15, and speed reducer 15 is driven by servo motor 16 installed thereon, to drive the circumferential motion of connecting plate 14 in arc-shaped guide rail 8;

[0025] The lower end of the loading support plate 6 is bolted with a three-way force sensor 7, so as to realize detection of three-way force on the three-way support frame 13.

[0026] Reference Figure 3 The lifting support device 2 comprises support columns 23 which are symmetrically arranged relative to the numerical control milling head 3, the inner side of the support column 23 is bolted with a linear guide rail 19, the linear guide rail 19 is internally provided with a ball screw pair 18, the ball screw pair 18 is connected through a screw nut and a slide plate 20, the linear guide rail 19 is provided with a sliding block 22, the other side of the sliding block 22 is connected with the slide plate 20, the slide plate 20 is bolted with a milling head support 21, the slide plate 20 is driven to move up and down in the linear guide rail 19 through the ball screw pair 18, so as to drive the milling head support 21 to lift, and then loading of different models and different sizes of numerical control milling heads 3 is realized.

[0027] In the embodiment, DEMAS milling head of a certain model is taken as an example, when precision retention and reliability accelerated test is carried out on the milling head, the numerical control milling head 3 is installed and positioned on the milling head support 21 of the lifting support device 2, and the height of the milling head support 21 is adjusted, so that the numerical control milling head 3 reaches a suitable position; the simulation tool holder 4 is connected to the numerical control milling head 3, so that the servo force loading device 1 and the numerical control milling head 3 are connected together, the servo force loading device 1 is started, and the three electric cylinders 12 start to work, the loading support plate 6 and the simulation tool holder 4 are driven by the articulated connecting rod 11 to exert three-way static and dynamic force on the numerical control milling head 3; when the numerical control milling head 3 moves along the arc-shaped support frame 10, the servo motor 16 drives the gear and rack pair 9 to work, so that the three electric cylinders 12 rotate with the numerical control milling head 3, and static and dynamic force loading on the numerical control milling head 3 at different working positions of the arc-shaped support frame 10 is realized; when the numerical control milling head 3 rotates, the rotary workbench 17 is started, so that the three electric cylinders 12 rotate with the numerical control milling head 3, and static and dynamic force loading on the numerical control milling head 3 at different working positions in the rotation direction of the numerical control milling head 3 is realized.

[0028] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "up", "down", "front", "back", "left", "right" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation; be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0029] It should be pointed out finally that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit it. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A three-dimensional cutting force servo loading device for analog simulation of a numerical control milling head, comprising a servo loading device (1), a lifting support device (2), and a numerical control milling head (3), characterized in that: The follow-up force loading device (1) is externally provided with a lifting supporting device (2), and a milling head support (21) is connected to the moving end of the lifting supporting device (2), and the numerical control milling head (3) is installed on the milling head support (21).

2. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 1, characterized in that: The follow-up force loading device (1) comprises a connecting plate (14) and a rotary workbench (17), the rotary workbench (17) is fixedly installed above an arc-shaped supporting frame (10), a gear and rack pair (9) is installed on one side of the arc-shaped edge of the arc-shaped supporting frame (10), and an arc-shaped guide rail (8) is formed on the gear and rack pair (9).

3. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 2, characterized in that: The gear and rack pair (9) is meshed with a driving gear, and the driving gear is fixedly connected with a rotating shaft in the middle.

4. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 2, characterized in that: A three-way supporting frame (13) is installed above the connecting plate (14), an electric cylinder (12) is installed in each of the three directions of the three-way supporting frame (13), a hinged connecting rod (11) is hinged to the output end of the electric cylinder (12), a loading supporting plate (6) is hinged to the other end of the hinged connecting rod (11), a bearing (5) is fixedly connected to the upper surface of the middle of the loading supporting plate (6), and an analog tool shank (4) is movably connected to the center of the bearing (5).

5. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 2, characterized in that: A speed reducer (15) is fixedly installed on the surface of the side of the connecting plate (14) away from the arc-shaped supporting frame (10), the output end of the speed reducer (15) penetrates through the connecting plate (14) and is connected with the rotating shaft, and the other end of the speed reducer (15) is connected with a servo motor (16).

6. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 4, characterized in that: A three-way force sensor (7) is fixed to the lower end of the loading supporting plate (6) through bolts.

7. The analog three-directional cutting force servo loading device of a CNC milling head according to claim 2, characterized in that: The lifting supporting device (2) comprises a set of supporting columns (23) arranged symmetrically, a set of the supporting columns (23) are respectively located on the two sides of the arc-shaped supporting frame (10), a linear guide rail (19) is fixed to the inner side of a set of the supporting columns (23), a ball screw pair (18) is installed in the linear guide rail (19), a sliding plate (20) is connected to the ball screw pair (18) through a screw nut, a sliding block (22) is provided on the linear guide rail (19), the other side of the sliding block (22) is connected with the sliding plate (20), and the sliding plate (20) is bolted with the milling head support (21).

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