High-precision positioning device for precision machinery

Abstract

The utility model belongs to the technical field of positioning devices, and particularly relates to a precision mechanical high-precision positioning device which comprises a base plate and a first positioning assembly, a first mounting groove and a second mounting groove are formed in the top end of the base plate, and the first mounting groove and the second mounting groove are distributed in a cross shape. And the first positioning assembly is arranged in the first mounting groove, the first positioning assembly comprises a first lead screw rotationally connected to the interior of the first mounting groove, and first moving blocks are symmetrically arranged on the first lead screw. According to the utility model, after the two contact blocks center and clamp a part in the width direction of the substrate, the contact blocks and the supporting plate can slide, the part can still move in the length direction of the substrate, and then the second positioning assembly is driven by the second forward and backward motor to center and clamp the part in the length direction of the substrate; the mechanical parts in different shapes can be centered and clamped through the device, automatic centering can be achieved after clamping, and the practicability of the device is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning devices, and in particular relates to a high-precision positioning device for precision machinery. Background Art

[0002] Mechanical positioning refers to the method of using mechanical devices to achieve position control. During mechanical processing, the most important step is to position and clamp the mechanical parts. Usually, the corresponding positioning and clamping devices are customized according to the shape and size of the parts, and the clamping and positioning are directly performed when used.

[0003] During the research and development process of parts, it is necessary to process parts of various sizes. At this time, the parts are not in the final state. If the corresponding fixtures are customized, not only will it take a long time to wait, but the parts will be modified accordingly during subsequent use, and the fixture will fail, resulting in an increase in the design cost of the parts. Utility Model Content

[0004] The utility model aims to provide a high-precision positioning device for precision machinery, which can center and clamp mechanical parts of different shapes and can automatically center after clamping, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision positioning device of precision machinery, comprising a substrate and a first positioning component, the top of the substrate is provided with a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove are distributed in a cross shape, the first positioning component is arranged inside the first mounting groove, the first positioning component comprises a first screw rod rotatably connected to the inside of the first mounting groove, a first moving block is symmetrically arranged on the first screw rod, the first screw rod is threadedly connected to the two first moving blocks, the top of the first moving block is fixedly connected to a support plate, one side of the support plate is slidably connected to a contact block, the inside of the second mounting groove is provided with a second positioning component, a first forward and reverse motor is provided on one side of the substrate, the output shaft of the first forward and reverse motor is fixedly connected to one end of the first screw rod, and one end of the substrate is provided with a second forward and reverse motor for driving the second positioning component.

[0006] Furthermore, a center plate is fixedly connected at the connection point between the first mounting slot and the second mounting slot, and the first screw rod passes through the center plate.

[0007] Furthermore, a sliding rod is fixedly connected to one side of the support plate, a sliding groove is provided on one side of the contact block, the sliding rod is slidably connected inside the sliding groove, and grooves are symmetrically provided on one side of the support plate, and rollers equidistantly distributed are rotatably connected inside the grooves.

[0008] Furthermore, a scale line is provided on the top of the support plate, and a triangle plate is fixedly connected to the top of the contact block.

[0009] Furthermore, the second positioning assembly includes a second screw rod rotatably connected to the inside of the second mounting groove, the second screw rod is arranged below the first screw rod, the second screw rod passes through the center plate, a second moving block is symmetrically arranged on the second screw rod, a clamping plate is fixedly connected to one side of the second moving block, the second screw rod is threadedly connected to the second moving block, and the output shaft of the second forward and reverse motor is fixedly connected to one end of the second screw rod.

[0010] Furthermore, a reinforcing rib is fixedly connected between the clamping plate and the second moving block.

[0011] Furthermore, the side wall of the first screw rod and the side wall of the second screw rod are symmetrically provided with threaded portions with opposite spiral directions.

[0012] Compared with the prior art, the beneficial effect of the utility model is that after the two contact blocks center and clamp the parts in the width direction of the substrate, the contact blocks and the support plate can slide, and the parts can still move along the length direction of the substrate. The second positioning component is then driven by the second forward and reverse motor to center and clamp in the length direction of the substrate, so that the device can center and clamp mechanical parts of different shapes, and can also be automatically centered after clamping, and the device is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a right side view of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A in the figure.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Base plate; 11. First mounting groove; 12. Second mounting groove; 13. Center plate; 2. First positioning assembly; 21. First screw rod; 22. First moving block; 23. Support plate; 24. Contact block; 25. Slide rod; 26. Slide groove; 27. Groove; 28. Roller; 29. ​​Scale line; 210. Triangle plate; 3. Second positioning assembly; 31. Second screw rod; 32. Second moving block; 33. Clamp plate; 34. Reinforcing rib; 4. First forward and reverse motor; 5. Second forward and reverse motor. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0020] like Figure 1-4 As shown, a high-precision positioning device for precision machinery includes a substrate 1 and a first positioning component 2. A first mounting groove 11 and a second mounting groove 12 are arranged at the top of the substrate 1. The first mounting groove 11 and the second mounting groove 12 are distributed in a cross shape. The first positioning component 2 is arranged inside the first mounting groove 11. The first positioning component 2 includes a first screw rod 21 rotatably connected to the inside of the first mounting groove 11. A first moving block 22 is symmetrically arranged on the first screw rod 21. The first screw rod 21 is threadedly connected to the two first moving blocks 22. A support plate 23 is fixedly connected to the top of the first moving block 22. A contact block 24 is slidably connected to one side of the support plate 23. A second positioning component 3 is arranged inside the second mounting groove 12. A first forward and reverse motor 4 is arranged on one side of the substrate 1. The output shaft of the first forward and reverse motor 4 is fixedly connected to one end of the first screw rod 21. A second forward and reverse motor 5 for driving the second positioning component 3 is arranged at one end of the substrate 1.

[0021] According to the above structure, when in use, the mechanical parts to be processed are placed in the middle of the top of the substrate 1, and then the first forward and reverse motor 4 is used to drive the first screw rod 21 to rotate clockwise, and the two first moving blocks 22 approach each other, driving the two support plates 23 to approach each other, and the contact blocks 24 on one side of the two support plates 23 perform centering and clamping of the parts in the width direction of the substrate 1. When the parts are clamped, since the contact blocks 24 are slidably connected to the support plates 23, the parts can still be moved along the length direction of the substrate 1, and then the second forward and reverse motor 5 is used to drive the second positioning assembly 3 to perform centering and clamping in the length direction of the substrate 1. This device can perform centering and clamping of mechanical parts of different shapes, and the device is highly practical.

[0022] like Figure 3 As shown, a center plate 13 is fixedly connected to the connection point between the first installation groove 11 and the second installation groove 12 , and the first screw rod 21 passes through the center plate 13 .

[0023] According to the above structure, when placing the parts, the parts are placed roughly above the center plate 13, so that the distance the parts move can be reduced during subsequent centering and clamping.

[0024] like Figure 2 and 3As shown, a slide rod 25 is fixedly connected to one side of the support plate 23, a slide groove 26 is provided on one side of the contact block 24, the slide rod 25 is slidably connected inside the slide groove 26, a groove 27 is symmetrically provided on one side of the support plate 23, and rollers 28 equidistantly distributed are rotatably connected inside the groove 27, a scale line 29 is provided on the top of the support plate 23, and a triangular plate 210 is fixedly connected to the top of the contact block 24.

[0025] According to the above structure, the contact block 24 slides along the sliding rod 25, and the movement stability is high. When the contact block 24 slides, the roller 28 supports one side of the contact block 24, reducing the friction between the contact block 24 and the support plate 23, so that the contact block 24 moves more smoothly. Before clamping, the position of the contact block 24 can be adjusted by sliding so that it is roughly aligned with the middle position of the part. When clamping, eccentric clamping is prevented, which can improve the stability of clamping. The setting of the scale line 29 can provide a reference for moving the contact block 24.

[0026] like Figure 2 and 3 As shown, the second positioning assembly 3 includes a second screw rod 31 rotatably connected to the inside of the second mounting groove 12, the second screw rod 31 is arranged below the first screw rod 21, the second screw rod 31 passes through the center plate 13, and a second movable block 32 is symmetrically arranged on the second screw rod 31, a clamping plate 33 is fixedly connected to one side of the second movable block 32, the second screw rod 31 is threadedly connected to the second movable block 32, a reinforcing rib 34 is fixedly connected between the clamping plate 33 and the second movable block 32, the output shaft of the second forward and reverse motor 5 is fixedly connected to one end of the second screw rod 31, and the side walls of the first screw rod 21 and the side walls of the second screw rod 31 are symmetrically provided with threaded portions with opposite spiral directions.

[0027] According to the above structure, after the part is initially clamped and positioned, the second forward and reverse motor 5 drives the second screw rod 31 to rotate clockwise, driving the two second moving blocks 32 to approach each other, and the clamping plate 33 clamps the part along the length direction of the substrate 1 to finally fix the position of the part.

[0028] The working principle of the utility model is as follows: when placing parts, the parts are roughly placed directly above the center plate 13, and the distance moved by the parts is reduced during subsequent centering and clamping, and the first forward and reverse motor 4 drives the first screw rod 21 to rotate clockwise, and the two first moving blocks 22 approach each other, driving the two support plates 23 to approach each other, and the contact blocks 24 on one side of the two support plates 23 perform centering and clamping of the parts in the width direction of the substrate 1. When the parts are clamped, at this time, due to the sliding connection between the contact blocks 24 and the support plates 23, the parts can still move along the length direction of the substrate 1, and then the second forward and reverse motor 5 drives the second positioning assembly 3 to perform centering and clamping in the length direction of the substrate 1. This device can perform centering and clamping of mechanical parts of different shapes, and the practicality of the device is very high. The contact block 24 slides along the slide rod 25, and the movement stability is high. When the contact block 24 slides, the roller 28 supports one side of the contact block 24, reducing the friction between the contact block 24 and the support plate 23, so that the contact block 24 moves more smoothly. Before clamping, the position of the contact block 24 can be adjusted by sliding so that it is roughly aligned with the middle position of the part. When clamping, it prevents eccentric clamping and improves the stability of clamping. The setting of the scale line 29 can provide a reference for moving the contact block 24. After the initial clamping and positioning of the part, the second forward and reverse motor 5 drives the second screw rod 31 to rotate clockwise, driving the two second moving blocks 32 to approach each other, and the clamping plate 33 clamps the part along the length direction of the substrate 1, and finally fixes the position of the part.

[0029] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high-precision positioning device for precision machinery, comprising a substrate (1) and a first positioning component (2), characterized in that: The top of the base plate (1) is provided with a first mounting groove (11) and a second mounting groove (12), the first mounting groove (11) and the second mounting groove (12) being arranged in a cross shape, the first positioning assembly (2) being arranged inside the first mounting groove (11), the first positioning assembly (2) comprising a first screw rod (21) rotatably connected inside the first mounting groove (11), first moving blocks (22) being symmetrically arranged on the first screw rod (21), the first screw rod (21) being threadedly connected to two first moving blocks (22), the top of the first moving block (22) being fixedly connected to a support plate (23), one side of the support plate (23) being slidably connected to a contact block (24), the inside of the second mounting groove (12) being provided with a second positioning assembly (3), a first forward and reverse motor (4) being arranged on one side of the base plate (1), the output shaft of the first forward and reverse motor (4) being fixedly connected to one end of the first screw rod (21), and a second forward and reverse motor (5) for driving the second positioning assembly (3) being arranged at one end of the base plate (1).

2. A high-precision positioning device for precision machinery according to claim 1, characterized in that: A center plate (13) is fixedly connected to the connecting portion of the first installation groove (11) and the second installation groove (12), and the first screw rod (21) passes through the center plate (13).

3. A high-precision positioning device for precision machinery according to claim 2, characterized in that: A sliding rod (25) is fixedly connected to one side of the support plate (23), a sliding groove (26) is provided on one side of the contact block (24), the sliding rod (25) is slidably connected inside the sliding groove (26), and a groove (27) is symmetrically provided on one side of the support plate (23), and rollers (28) equidistantly distributed are rotatably connected inside the groove (27).

4. A high-precision positioning device for precision machinery according to claim 3, characterized in that: The top end of the support plate (23) is provided with a scale line (29), and the top end of the contact block (24) is fixedly connected with a triangular plate (210).

5. A high-precision positioning device for precision machinery according to claim 4, characterized in that: The second positioning assembly (3) comprises a second screw rod (31) rotatably connected to the inside of the second mounting groove (12); the second screw rod (31) is arranged below the first screw rod (21); the second screw rod (31) passes through the center plate (13); a second moving block (32) is symmetrically arranged on the second screw rod (31); a clamping plate (33) is fixedly connected to one side of the second moving block (32); the second screw rod (31) is threadedly connected to the second moving block (32); and the output shaft of the second forward and reverse motor (5) is fixedly connected to one end of the second screw rod (31).

6. A high-precision positioning device for precision machinery according to claim 5, characterized in that: A reinforcing rib (34) is fixedly connected between the clamping plate (33) and the second moving block (32).

7. A high-precision positioning device for precision machinery according to claim 6, characterized in that: The side wall of the first screw rod (21) and the side wall of the second screw rod (31) are both symmetrically provided with threaded portions having opposite spiral directions.

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