Electric rotary clamping device

Abstract

The utility model provides an electric rotary clamping device which comprises a base plate (1), a pin clamping mechanism (2) installed on the base plate (1) and a position adjusting mechanism (3) installed on the base plate (1), the pin clamping mechanism (2) is used for clamping a pin, and the position adjusting mechanism (3) is used for adjusting the plane position of the pin. The pin clamping mechanism (2) comprises a support (21) installed on the base plate (1), a sleeve (22) installed on the support (21) and a driving assembly (23) installed on the base plate (1), and the driving assembly (23) drives the sleeve (22) to clamp or loosen the pin. The clamp is convenient to install, does not need additional machining adaptation, is sufficient in clamping force, is not easy to loosen, can finely adjust the clamping position, and is low in cost, high in efficiency and high in positioning and clamping precision.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping, and particularly relates to an electric rotary clamping device. Background Art

[0002] With the development of technology, the precision requirements for some processing industries are getting higher and higher. For traditional PCB numerical control drilling machines, the material clamping and positioning devices have poor stability, insufficient clamping force, and poor clamping effect. During the processing, the material is likely to shift under the action of the tool, resulting in low processing precision. Therefore, it is necessary to improve the material clamping device of the traditional PCB numerical control processing machine.

[0003] The material clamping and positioning device of the PCB numerical control processing machine includes a cover plate, a base, a fixed clamping block, a compression spring, a ventilation pipe, a moving block, a tension spring, a rubber airbag, a moving clamping strip, a fixed clamping strip, etc. The rubber airbag is fixed on the base, and the moving clamping strip is not fixed. It is guided and moved through the guide posts on the base. The ventilation pipe is connected to the rubber airbag. Both the moving clamping strip and one end of the moving block are provided with bevels. The compression spring is arranged between the moving block and the fixed clamping block. The device ventilates the rubber airbag through the ventilation pipe. The rubber airbag expands and bulges, pushing the moving clamping strip to move horizontally. At the same time, the moving clamping strip drives the moving block to move vertically through the mutual cooperation of the bevels. Both of them clamp and fix the positioning pin on the material in the horizontal and vertical directions. However, by ventilating and expanding the rubber airbag to push the moving clamping strip to move, the reaction time is long. It is necessary to wait until the rubber airbag is fully expanded and bulged to determine that the clamping is in place. During the ventilation process, the situation may occur that one side ventilates quickly and expands first, while the other side has not expanded in place yet, which is likely to cause the material to shift. The rubber airbag has a certain elasticity and is likely to be deformed under force during the processing, resulting in incomplete clamping and material movement, causing scrap loss of the material.

[0004] The existing material clamping and positioning devices of PCB numerical control processing machines have the following disadvantages: 1. It is inconvenient to install and use, and additional processing and adaptation are required; 2. The clamping force is insufficient and it is easy to loosen; 3. The clamping position cannot be finely adjusted; 4. The cost is high and the efficiency is low; 5. The positioning and clamping accuracy is low, and manual alignment is required with low efficiency.

[0005] In view of this, it is necessary to provide an electric rotary clamping device to solve the deficiencies of the prior art. Summary of the Utility Model

[0006] Aiming at the above-mentioned prior art, the technical problem to be solved by the utility model is to provide an electric rotary clamping device that is convenient to install, does not require additional processing and adaptation, has sufficient clamping force, is not easy to loosen, the clamping position can be finely adjusted, has low cost, high efficiency, and high positioning and clamping accuracy.

[0007] To solve the above technical problems, the present utility model provides an electric rotary clamping device, which includes a substrate, a pin clamping mechanism mounted on the substrate, and a position adjustment mechanism mounted on the substrate. The pin clamping mechanism is used to clamp a pin, and the position adjustment mechanism is used to adjust the planar position of the pin.

[0008] A further improvement of the present utility model is that the pin clamping mechanism includes a support mounted on the substrate, a sleeve mounted on the support, and a driving assembly mounted on the substrate. The driving assembly drives the sleeve to clamp or release the pin.

[0009] A further improvement of the present utility model is that the sleeve includes an inner sleeve mounted on the support, an outer sleeve threadedly connected to the inner sleeve, and an elastic chuck placed in the inner sleeve and elastically abutted against the inner sleeve and the outer sleeve respectively.

[0010] A further improvement of the present utility model is that the driving assembly includes a driving unit and a power unit respectively mounted on the substrate. The power unit is used to provide power to the driving unit, and the driving unit is used to drive the sleeve to clamp or release the pin.

[0011] A further improvement of the present utility model is that the power unit adopts a micro DC reduction motor.

[0012] A further improvement of the present utility model is that the driving unit includes a bevel gear set mounted on the power unit and a worm and worm gear set mounted on the substrate. The power unit drives the bevel gear set to work, the bevel gear set drives the worm and worm gear set to work, and the worm and worm gear set drives the sleeve to clamp or release the pin.

[0013] A further improvement of the present utility model is that the bevel gear set includes two meshing bevel gears, and the worm and worm gear set includes a meshing worm and worm gear.

[0014] A further improvement of the present utility model is that the position adjustment mechanism includes an X-axis position adjustment component mounted on the substrate and a Y-axis position adjustment component mounted on the X-axis position adjustment component. The X-axis position adjustment component is used to adjust the axial position of the substrate in the X-axis direction, and the Y-axis position adjustment component is used to adjust the axial position of the substrate in the Y-axis direction.

[0015] A further improvement of the present utility model is that the X-axis position adjustment component includes an X-axis adjustment plate mounted on the substrate, a first rotating shaft mounted on the Y-axis position adjustment component, and a first adjustment gear mounted on the first rotating shaft. The X-axis adjustment plate is provided with a rack meshing with the first adjustment gear.

[0016] A further improvement of the present utility model is that the Y-axis position adjustment assembly includes a Y-axis adjustment plate mounted on the X-axis adjustment plate, a second rotating shaft mounted on the X-axis adjustment plate, a second adjustment gear mounted on the second rotating shaft, and a rack provided on the substrate and meshing with the second adjustment gear.

[0017] Compared with the prior art, the present utility model uses a micro motor to drive the sleeve to clamp or loosen the pin through a bevel gear set and a worm and worm gear set. The beneficial effects of the present utility model are as follows:

[0018] 1. Important parts such as micro motors, bevel gear sets, worm and worm gear sets, sleeves, and gears all use standard parts, which have low cost and high efficiency;

[0019] 2. The micro motor is used to drive the sleeve to clamp or loosen the pin through the bevel gear set and the worm and worm gear set. The above-mentioned worm and worm gear have a large transmission ratio, high efficiency, and self-locking ability. Compared with the cylinder of the prior art, the clamping force is large enough. The lead angle of the fine thread between the inner sleeve and the outer sleeve is small, and the pressure angle is small, making it easy to lock and not easy to loosen between the inner sleeve and the outer sleeve;

[0020] 3. The X-axis position adjustment assembly and the Y-axis position adjustment assembly are added, realizing fine adjustment of the clamping position, high positioning and clamping accuracy, and high efficiency without manual alignment;

[0021] 4. The external dimensions of the device of the present utility model are the same as those of the Y-axis adjustment plate, which is convenient for installation and does not require additional processing for adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 、 Figure 2 are three-dimensional structural schematic diagrams of two different perspectives of the present utility model;

[0023] Figure 3 is Figure 1 three-dimensional unfolded structural schematic diagram;

[0024] Figure 4 is Figure 2 three-dimensional unfolded structural schematic diagram;

[0025] Figure 5 is the three-dimensional structural schematic diagram of the pin clamping mechanism of the present utility model;

[0026] Figure 6 is Figure 5 three-dimensional unfolded structural schematic diagram;

[0027] Figure 7 is the three-dimensional structural schematic diagram of the position adjustment mechanism of the present utility model;

[0028] Figure 8 is Figure 7 three-dimensional unfolded structural schematic diagram.

[0029] The names of the components in the figure are as follows:

[0030] 1 - Substrate

[0031] 2 - Pin clamping mechanism

[0032] 21 - Support

[0033] 22 - Sleeve

[0034] 221 - Inner sleeve

[0035] 222 - Outer sleeve

[0036] 223 - Elastic chuck

[0037] 23 - Driving component

[0038] 231 - Driving unit

[0039] 2311 - Bevel gear

[0040] 2312 - Worm

[0041] 2313 - Worm wheel

[0042] 2314 - Worm mounting seat

[0043] 232 - Power unit

[0044] 2321 - Micro motor

[0045] 2322 - Motor seat

[0046] 3 - Position adjustment mechanism

[0047] 31 - X - axis position adjustment component

[0048] 311 - X - axis adjustment plate

[0049] 312 - First rotating shaft

[0050] 313 - First adjustment gear

[0051] 32 - Y - axis position adjustment component

[0052] 321 - Y - axis adjustment plate

[0053] 322 - Second rotating shaft

[0054] 323 - Second adjustment gear Specific implementation mode

[0055] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0056] In the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0057] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific situations.

[0058] In addition, the terms "mounted", "arranged", "provided with", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0059] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0060] It should also be understood that the terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0061] It should also be further understood that the term "and / or" used in the specification and appended claims of the present utility model refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0062] As Figures 1 to 8 shown, an electric rotary clamping device includes a base plate 1, a pin clamping mechanism 2 fixedly installed on the base plate 1, and a position adjusting mechanism 3 fixedly installed on the base plate 1.

[0063] Specifically, as Figures 1 to 8 shown, the base plate 1 is a flat plate. A circular through hole for accommodating the inner sleeve 221 is provided at the center of the base plate 1. Slide tables are provided on both sides of the base plate 1, and a rack is provided on one of the slide tables.

[0064] Specifically, as Figures 1 to 8 shown, the pin clamping mechanism 2 includes a support 21 fixedly installed under the base plate 1 by screws, a sleeve 22 fixedly installed on the support 21, and a driving assembly 23 fixedly installed on the base plate 1. A through hole for installing the inner sleeve 221 is provided on the support 21. The support 21 is fixedly installed under the base plate 1 by 2 screws. The sleeve 22 includes an inner sleeve 221 fixedly installed in the through hole of the support 21, an outer sleeve 222 threadedly connected with the inner sleeve 221 with fine threads, and an elastic chuck 223 placed in the inner sleeve 221 and elastically abutted against the inner sleeve 221 and the outer sleeve 222 respectively. The elastic chuck 223 is used to clamp or loosen the pin. The sleeve 22 is a complete set of three pieces and can be purchased externally.

[0065] Specifically, as Figures 1 to 8 shown, the driving assembly 23 includes a driving unit 231 and a power unit 232 respectively fixedly installed on the base plate 1. The power unit 232 is driven by a micro DC reduction motor. The power unit 232 includes a micro motor 2321 and a motor seat 2322. The motor seat 2322 is fixedly installed under the base plate 1 by screws, and the micro motor 2321 is fixedly installed on the motor seat 2322. The micro motor 2321 uses a micro DC reduction motor.

[0066] Specifically, as Figures 1 to 8As shown, the driving unit 231 includes a bevel gear set fixedly installed on the power unit 232 and a worm and worm gear set fixedly installed on the substrate 1. The bevel gear set includes two meshing bevel gears 2311, one of which is fixedly installed on the output shaft of the micro motor 2321 and the other is fixedly installed on the worm 2312. The worm and worm gear set includes a meshing worm 2312, a worm gear 2313, and a worm mounting seat 2314. The worm mounting seat 2314 is fixedly installed under the substrate 1. The worm 2312 is rotatably installed on the worm mounting seat 2314. The worm gear 2313 is rotatably installed under the substrate 1 through a bearing and is rotatably connected to the support 21 through a bearing. A hexagonal through hole is provided in the center of the worm gear 2313. The outer side of the outer sleeve 222 is a hexagonal convex column. The hexagonal through hole of the worm gear 2313 is slidably connected to the hexagonal convex column of the outer sleeve 222.

[0067] Specifically, as Figures 1 to 8 shown, the position adjustment mechanism 3 includes an X-axis position adjustment component 31 fixedly installed on the substrate 1 and a Y-axis position adjustment component 32 fixedly installed on the X-axis position adjustment component 31. The X-axis position adjustment component 31 includes an X-axis adjustment plate 311 fixedly installed on the substrate 1 by screws, a first rotating shaft 312 fixedly installed on the Y-axis position adjustment component 32, and a first adjustment gear 313 fixedly installed on the first rotating shaft 312. A rack meshing with the first adjustment gear 313 is provided on the X-axis adjustment plate 311. Press blocks are provided on both sides of the X-axis adjustment plate 311. The press blocks on both sides of the X-axis adjustment plate 311 are slidably connected to the sliding tables on both sides of the substrate 1. Sliding tables are provided on the other two sides of the X-axis adjustment plate 311.

[0068] Specifically, as Figures 1 to 8 shown, the Y-axis position adjustment component 32 includes a Y-axis adjustment plate 321 fixedly installed on the X-axis adjustment plate 311, a second rotating shaft 322 fixedly installed on the X-axis adjustment plate 311, and a second adjustment gear 323 fixedly installed on the second rotating shaft 322. The rack on the substrate 1 meshes with the second adjustment gear 323. Press blocks are provided on both sides of the Y-axis adjustment plate 321. The press blocks on both sides of the Y-axis adjustment plate 321 are slidably connected to the sliding tables on the other two sides of the X-axis adjustment plate 311.

[0069] The present utility model is also provided with a control system for controlling the operation of the micro motor 2321.

[0070] The working principle of the present utility model:

[0071] The pin is inserted into the elastic collet 223. When the micro motor 2321 operates, it drives the worm 2312 to rotate through the bevel gear set. The worm 2312 drives the worm wheel 2313 to rotate, and the worm wheel 2313 drives the outer sleeve 222 to rotate. Since the inner sleeve 221 is fixed to the support 21, the inner sleeve 221 drives the outer sleeve 222 to move upward or downward while rotating through the fine pitch thread. When the outer sleeve 222 moves downward, it drives the elastic collet 223 to move downward to clamp the pin. Or when the outer sleeve 222 moves upward, it releases the elastic collet 223, and the elastic collet 223 automatically releases the pin under the action of its own elastic force.

[0072] Loosen the screw fixing the X-axis adjustment plate 311 and the Y-axis adjustment plate 321, and rotate the first rotating shaft 312. The first rotating shaft 312 drives the first adjustment gear 313 to rotate, and the first adjustment gear 313 drives the X-axis adjustment plate 311 and the base plate 1 to translate in the X-axis direction through the rack meshing on the X-axis adjustment plate 311.

[0073] Loosen the screw fixing the base plate 1 and the X-axis adjustment plate 311, and rotate the second rotating shaft 322. The second rotating shaft 322 drives the second adjustment gear 323 to rotate, and the second adjustment gear 323 drives the base plate 1 to translate in the Y-axis direction through the rack meshing on the base plate 1.

[0074] Compared with the prior art, the utility model uses a micro motor to drive a sleeve to clamp or release a pin through a bevel gear set and a worm and worm wheel set. The beneficial effects of the utility model are as follows:

[0075] 1. Important parts such as the micro motor, bevel gear set, worm and worm wheel set, sleeve, and gear all use standard parts, with low cost and high efficiency;

[0076] 2. The micro motor is used to drive a sleeve to clamp or release a pin through a bevel gear set and a worm and worm wheel set. The above-mentioned worm and worm wheel have a large transmission ratio, high efficiency, and self-locking ability. Compared with the cylinder in the prior art, the clamping force is large enough. The fine pitch thread between the inner sleeve and the outer sleeve has a small lead angle and a small pressure angle, making it easy to lock between the inner sleeve and the outer sleeve and not easy to loosen;

[0077] 3. The X-axis position adjustment component and the Y-axis position adjustment component are added, realizing fine adjustment of the clamping position, with high positioning and clamping accuracy, and high efficiency without manual alignment;

[0078] 4. The outer dimension of the device of the utility model is the same as the outer dimension of the Y-axis adjustment plate, which is convenient for installation and does not require additional processing for adaptation.

[0079] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. An electric rotary clamping device, characterized in that: It comprises a base plate (1), a pin clamping mechanism (2) installed on the base plate (1), and a position adjustment mechanism (3) installed on the base plate (1), wherein the pin clamping mechanism (2) is used to clamp the pin, and the position adjustment mechanism (3) is used to adjust the plane position of the pin.

2. The electric rotary clamping device according to claim 1, characterized in that: The pin clamping mechanism (2) comprises a support (21) mounted on the base plate (1), a sleeve (22) mounted on the support (21), and a driving component (23) mounted on the base plate (1), wherein the driving component (23) drives the sleeve (22) to clamp or release the pin.

3. The electric rotary clamping device according to claim 2, characterized in that: The sleeve (22) comprises an inner sleeve (221) mounted on the support (21), an outer sleeve (222) threadedly connected to the inner sleeve (221), and an elastic chuck (223) disposed in the inner sleeve (221) and elastically abutting against the inner sleeve (221) and the outer sleeve (222) respectively.

4. The electric rotary clamping device according to claim 2, characterized in that: The driving assembly (23) comprises a driving unit (231) and a power unit (232) respectively mounted on the base plate (1); the power unit (232) is used to provide power to the driving unit (231); and the driving unit (231) is used to drive the sleeve (22) to clamp or release the pin.

5. The electric rotary clamping device according to claim 4, characterized in that: The power unit (232) adopts a micro DC reduction motor.

6. The electric rotary clamping device according to claim 4, characterized in that: The driving unit (231) comprises a bevel gear set mounted on the power unit (232), and a worm gear set mounted on the base plate (1); the power unit (232) drives the bevel gear set to work, the bevel gear set drives the worm gear set to work, and the worm gear set drives the sleeve (22) to clamp or release the pin.

7. The electric rotary clamping device according to claim 6, characterized in that: The bevel gear set includes two meshing bevel gears (2311).

8. The electric rotary clamping device according to any one of claims 1 to 7, characterized in that: The position adjustment mechanism (3) comprises an X-axis position adjustment component (31) mounted on the substrate (1), and a Y-axis position adjustment component (32) mounted on the X-axis position adjustment component (31); the X-axis position adjustment component (31) is used to adjust the X-axis axial position of the substrate (1), and the Y-axis position adjustment component (32) is used to adjust the Y-axis axial position of the substrate (1).

9. The electric rotary clamping device according to claim 8, characterized in that: The X-axis position adjustment component (31) comprises an X-axis adjustment plate (311) mounted on the substrate (1), a first rotating shaft (312) mounted on the Y-axis position adjustment component (32), and a first adjustment gear (313) mounted on the first rotating shaft (312); the X-axis adjustment plate (311) is provided with a rack meshing with the first adjustment gear (313).

10. The electric rotary clamping device according to claim 9, characterized in that: The Y-axis position adjustment assembly (32) comprises a Y-axis adjustment plate (321) mounted on the X-axis adjustment plate (311), a second rotating shaft (322) mounted on the X-axis adjustment plate (311), and a second adjustment gear (323) mounted on the second rotating shaft (322); and a rack meshing with the second adjustment gear (323) is provided on the base plate (1).

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