An electric rotary three jaw chuck device

Abstract

This utility model discloses an electric rotary three-jaw chuck device, comprising: a housing, a chuck, a sliding assembly, and a rotating assembly; the sliding assembly and the rotating assembly are housed within the housing; the chuck is equipped with jaws and a main shaft, the main shaft passing through the chuck and slidably positioned on the central axis of the chuck, causing the jaws to tighten or open when the main shaft slides; the sliding assembly includes a screw, a sliding block, a bracket, and a guide rail, the guide rail being fixedly mounted on the inner wall of the housing, the screw threadedly engaging with the sliding block, the sliding block being fixedly connected to the bracket, the bracket being connected to the end of the main shaft, the sliding block engaging with the guide rail, and the sliding block utilizing the guide rail for sliding; the rotating assembly includes a first synchronous pulley, a second synchronous pulley, and a belt, the first synchronous pulley being connected to the second synchronous pulley via the belt, and the second synchronous pulley being fixedly connected to the chuck. This electric rotary three-jaw chuck device can clamp or release workpieces electrically, thus facilitating operation by the operator.

Description

Technical Field

[0001] This utility model relates to the field of mechanical gripper technology, and in particular to an electric rotary three-jaw chuck device. Background Technology

[0002] A rotary three-jaw chuck is a common machining device primarily used for clamping workpieces for precision machining. Its core function is to achieve high-precision positioning and clamping of the workpiece by utilizing the radial movement of three evenly distributed movable jaws on the chuck body. A traditional chuck contains a small bevel gear and a meshing large bevel gear. The back of the large bevel gear has an Archimedean groove that meshes with the three jaws. In operation, the small bevel gear is rotated via a handle, driving the large bevel gear to rotate synchronously. The helical groove on the large bevel gear then pushes the three jaws radially. This type of machining device is suitable for machining shafts, discs, and regularly shaped parts, and is characterized by its simple structure and low cost.

[0003] However, this rotary three-jaw chuck device requires workers to manually insert the handle into the screw hole and then rotate the handle in the forward or reverse direction to tighten or loosen the movable jaws. The method of use is cumbersome and inconvenient, and long-term use of the device will cause a certain degree of wear.

[0004] Therefore, how to design an electric rotary three-jaw chuck device that enables the three jaws to clamp or release workpieces electrically, thereby facilitating operation by workers and reducing wear between parts, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electric rotary three-jaw chuck device that can clamp or release workpieces electrically, thereby facilitating operation by workers and reducing wear between parts.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An electric rotary three-jaw chuck device, characterized in that it comprises: a housing, a chuck, a sliding assembly, and a rotating assembly;

[0008] The sliding component and the rotating component are housed within the housing;

[0009] The chuck is equipped with jaws and a main shaft. A central hole is opened at the center of the chuck, and the main shaft is housed in the central hole. The main shaft passes through the chuck and is slidably disposed on the central axis of the chuck. When the main shaft slides, it will drive the jaws to tighten or open.

[0010] The sliding assembly includes a screw, a sliding block, a bracket, and a guide rail. The guide rail is fixedly mounted on the inner wall of the housing. The screw is threadedly engaged with the sliding block. The sliding block is fixedly connected to the bracket. The bracket is connected to the end of the main shaft. The sliding block is snapped into the guide rail, and the sliding block slides using the guide rail.

[0011] The rotating assembly includes a first synchronous pulley, a second synchronous pulley, and a belt. The first synchronous pulley is connected to the second synchronous pulley via the belt, and the second synchronous pulley is fixedly connected to the chuck.

[0012] In one embodiment, the spindle is provided with a guide protrusion, and the gripper is provided with an inclined groove that cooperates with the guide protrusion, the inclined groove being partially engaged with the guide protrusion.

[0013] In one embodiment, a gripper motor is provided at one end of the screw, and the screw is connected to the output shaft of the gripper motor. The rotational motion of the output shaft is converted into the linear motion of the sliding block through the cooperation between the screw and the sliding block.

[0014] In one embodiment, a rotary motor is provided at one end of the first synchronous pulley, the first synchronous pulley is connected to the rotary motor for transmission, and the first synchronous pulley transmits the rotational motion to the second synchronous pulley through the belt.

[0015] In one embodiment, there are multiple grippers, which are evenly distributed in a ring around the central axis of the central hole on the chuck. The multiple grippers cooperate with each other to firmly hold the external workpiece.

[0016] In one embodiment, the sliding assembly includes a first bearing sleeved on the end of the spindle and held between the spindle and the bracket.

[0017] In one embodiment, the first bearing is a thrust bearing, which is used to withstand the axial thrust generated by the bracket during sliding.

[0018] In one embodiment, the rotating assembly includes a second bearing disposed between the housing and the second synchronizing wheel.

[0019] In summary, this utility model provides an electric rotary three-jaw chuck device that can clamp or release workpieces electrically, thereby facilitating operation by workers and reducing wear between parts. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0021] Figure 1 This is a schematic diagram of the structure of the electric rotary three-jaw chuck device of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the electric rotary three-jaw chuck device of this utility model;

[0023] Figure 3 for Figure 1 A partial schematic diagram of the electrically driven rotary three-jaw chuck device shown;

[0024] Figure 4 for Figure 1 A partial sectional view of the electrically driven rotary three-jaw chuck assembly shown;

[0025] Figure 5 for Figure 2 A partial structural schematic diagram of the electrically driven rotary three-jaw chuck device is shown. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms "upper," "lower," "left," "right," and "middle," etc., used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships are also considered within the scope of implementation of this utility model without substantial changes to the technical content.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] This utility model provides an electric rotary three-jaw chuck device 10, such as... Figure 1 and Figure 2 As shown, it includes: a housing 100, a chuck 200, a sliding assembly 300 and a rotating assembly 400, the sliding assembly 300 and the rotating assembly 400 being housed within the housing 100.

[0029] like Figure 3 and Figure 4 As shown, the chuck 200 is equipped with jaws 210 and a spindle 220. A central hole 201 is formed at the center of the chuck 200, and the spindle 220 is housed within the central hole 201. The central hole 201 facilitates the positioning of shaft-type workpieces and prevents displacement. Furthermore, the spindle 220 has a hollow structure and extends through the chuck 200. The spindle 220 is slidably mounted on the central axis of the chuck 200. When the spindle 220 slides, it will cause the jaws 210 to tighten or loosen.

[0030] like Figure 3 and Figure 4 As shown, the sliding assembly 300 includes a screw 310, a sliding block 320, a bracket 330, and a guide rail 340. The guide rail 340 is fixedly mounted on the inner wall of the housing 100. The screw 310 and the sliding block 320 are threaded together. The sliding block 320 is fixedly connected to the bracket 330. The bracket 330 is connected to the end of the main shaft 220. The sliding block 320 is snapped into the guide rail 340, and the sliding block 320 slides using the guide rail 340.

[0031] like Figure 3 and Figure 4 As shown, the rotating assembly 400 includes a first synchronous pulley 410, a second synchronous pulley 420, and a belt 430. The first synchronous pulley 410 is connected to the second synchronous pulley 420 via the belt 430, and the second synchronous pulley 420 is fixedly connected to the chuck 200. Preferably, as... Figure 4 As shown, the spindle 220 is provided with a guide protrusion 221, and the gripper 210 is provided with an inclined groove 211 that cooperates with the guide protrusion 221. The inclined groove 211 and the guide protrusion 221 are partially engaged.

[0032] like Figure 2 As shown, in this embodiment, a gripper motor 311 is provided at one end of the screw 310. The screw 310 and the output shaft (not shown) of the gripper motor 311 are connected by a transmission. The rotational motion of the output shaft is converted into the linear motion of the sliding block 320 through the cooperation of the screw 310 and the sliding block 320. The gripper motor 311 is driven by the sliding assembly 300, thereby controlling the gripping or opening of the gripper 210. The specific working principle will be explained below.

[0033] Preferably, a rotary motor 411 is provided at one end of the first synchronous pulley 410, and the first synchronous pulley 410 is connected to the rotary motor 411 for transmission. The first synchronous pulley 410 transmits the rotational motion to the second synchronous pulley 420 through the belt 430, thereby driving the chuck 200 and its main shaft 220 to rotate.

[0034] like Figure 5 As shown, preferably, there are multiple grippers 210. The multiple grippers 210 are evenly distributed in a ring on the chuck 200 with the central axis of the central hole 201 as the center. The multiple grippers 210 cooperate with each other to ensure uniform clamping force, so as to firmly hold the external workpiece.

[0035] The working principle of the electric rotary three-jaw chuck device 10 will be explained below in conjunction with the above structure. Please refer to the following explanation. Figures 1 to 5 :

[0036] When the operator performs the operation, the sliding component 300 and the rotating component 400 are mechanically coupled, and together they act on the chuck 200 to clamp and rotate the external workpiece. Specifically:

[0037] First, the operator places the workpiece in the center hole 201 of the chuck 200, then starts the gripper motor 311. The output shaft of the gripper motor 311 rotates, driving the screw 310 to rotate. Since the screw 310 is threadedly connected to the sliding block 320, the sliding block 320 slides using the guide rail 340 under the transmission of the screw 310, and then drives the main shaft 220 to move linearly through the fixedly connected bracket 330. At this time, the output shaft rotates forward, and the bracket 330 will drive the main shaft 220 to move away from the chuck 200. Under the cooperation of the guide protrusion 221 and the inclined groove 211, the gripper 210 will slide towards the center hole 201, thereby clamping the workpiece.

[0038] Then, start the rotary motor 411. The first synchronous pulley 410 rotates under the drive of the rotary motor 411, and drives the second synchronous pulley 420 and the chuck 200 to rotate together through the belt 430, so that the workpiece can be processed.

[0039] After processing is completed, the rotary motor 411 stops running, and the gripper motor 311 starts again. At this time, the output shaft of the gripper motor 311 reverses, the sliding block 320 and the bracket 330 slide, and the bracket 330 will drive the spindle 220 to move closer to the chuck 200. Then the gripper 210 will slide away from the center hole 201, thereby releasing the workpiece and preparing for the next clamping.

[0040] Compared with existing technologies, the electric rotary three-jaw chuck device 10 of this invention can electrically adjust the tightening or loosening of the jaws 210 by controlling the rotation direction of the jaw motor 311, thereby completing the operation of clamping or releasing the workpiece, achieving convenient operation and reducing the workload of operators. Furthermore, by using an external power source to drive the jaws 210 to perform clamping or releasing actions, and without the need for electric or pneumatic slip rings, the application range and service life of the jaw chuck device 10 are significantly improved.

[0041] It should be further emphasized that the chuck 200 of this invention has a central hole 201, and the spindle 220 is a hollow structure. During machining, the workpiece to be machined is clamped at the central hole 201 by the jaws 210, so that the two sides of the workpiece are relatively suspended, allowing for through-hole drilling. In contrast, existing chucks are mostly solid structures. If through-hole drilling is performed, the machining tool is prone to colliding with the solid chuck, limiting the application range of existing chucks. In other words, this invention, through the setting of the central hole 201 and the offset design of the power source, meets more machining conditions.

[0042] In this embodiment, as Figure 4 As shown, the sliding assembly 300 includes a first bearing 331, which is sleeved on the end of the main shaft 220 and clamped between the main shaft 220 and the bracket 330. Preferably, the first bearing 331 is a thrust bearing, used to withstand the axial thrust generated by the bracket 330 during sliding. Further, the rotating assembly 400 includes a second bearing 421, which is disposed between the housing 100 and the second synchronous pulley 420. The arrangement of the first bearing 331 and the second bearing 421 can effectively prevent the chuck 200 from driving other unnecessary parts to move together when rotating or the main shaft 220 is sliding, thus affecting the functional performance of other components. At the same time, it reduces frictional resistance and, to a certain extent, alleviates the wear and aging of the parts.

[0043] In summary, the electric rotary three-jaw chuck device 10 of this utility model can clamp or release the workpiece by electric means, thereby facilitating operation by workers and reducing wear between parts.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrically operated rotary three-jaw chuck device, characterized in that, include: Housing, chuck, sliding components, and rotating components; The sliding component and the rotating component are housed within the housing; The chuck is equipped with jaws and a main shaft. A central hole is opened at the center of the chuck, and the main shaft is housed in the central hole. The main shaft passes through the chuck and is slidably disposed on the central axis of the chuck. When the main shaft slides, it will drive the jaws to tighten or open. The sliding assembly includes a screw, a sliding block, a bracket, and a guide rail. The guide rail is fixedly mounted on the inner wall of the housing. The screw is threadedly engaged with the sliding block. The sliding block is fixedly connected to the bracket. The bracket is connected to the end of the main shaft. The sliding block is snapped into the guide rail, and the sliding block slides using the guide rail. The rotating assembly includes a first synchronous pulley, a second synchronous pulley, and a belt. The first synchronous pulley is connected to the second synchronous pulley via the belt, and the second synchronous pulley is fixedly connected to the chuck.

2. The electrically operated rotary three-jaw chuck device according to claim 1, characterized in that, The main shaft is provided with a guide protrusion, and the gripper is provided with an inclined groove that cooperates with the guide protrusion. The inclined groove partially engages with the guide protrusion.

3. The electrically operated rotary three-jaw chuck device according to claim 1, characterized in that, One end of the screw is equipped with a gripper motor, and the screw is connected to the output shaft of the gripper motor. The rotational motion of the output shaft is converted into the linear motion of the sliding block through the cooperation of the screw and the sliding block.

4. The electrically operated rotary three-jaw chuck device according to claim 1, characterized in that, One end of the first synchronous pulley is equipped with a rotary motor, and the first synchronous pulley is connected to the rotary motor for transmission. The first synchronous pulley transmits the rotational motion to the second synchronous pulley through the belt.

5. The electrically operated rotary three-jaw chuck device according to claim 1, characterized in that, The number of grippers is multiple, and the multiple grippers are evenly distributed in a ring on the chuck with the central axis of the central hole as the center. The multiple grippers cooperate with each other to firmly clamp the external workpiece.

6. The electrically operated rotary three-jaw chuck device according to claim 1, characterized in that, The sliding assembly includes a first bearing, which is sleeved on the end of the main shaft and clamped between the main shaft and the bracket.

7. The electrically operated rotary three-jaw chuck device according to claim 6, characterized in that, The first bearing is a thrust bearing, which is used to withstand the axial thrust generated by the bracket during sliding.

8. The electrically operated rotary three-jaw chuck device according to claim 6, characterized in that, The rotating assembly includes a second bearing disposed between the housing and the second synchronous pulley.

Images