Chuck outer circle numerical control grinding machine

Abstract

This utility model provides a collet-operated CNC grinding machine for external cylindrical grinding, which solves the problems of low production efficiency and low machining quality and precision of existing collet-operated CNC grinding machines. It includes a worktable; a feed slide is provided on the surface of the worktable, and the feed slide is slidably connected to the worktable surface; the feed slide includes a base and a material plate perpendicularly connected to the base; a clamping mechanism is provided on the base; a loading mechanism and a conveying mechanism located near the discharge end of the loading mechanism are provided on the material plate, and the conveying mechanism transports the collets from the loading mechanism to the clamping mechanism; a grinding mechanism is fixed to the worktable surface on one side of the clamping mechanism, and a unloading conveying mechanism is provided on the base on the other side. The clamping mechanism and the grinding mechanism cooperate to machine the external diameter of the collets. This utility model is widely used in the field of collet-operated CNC grinding machine technology.

Description

Technical Field

[0001] This application relates to the field of collet CNC grinding machine technology, and more specifically, to a collet external cylindrical CNC grinding machine. Background Technology

[0002] In the field of machining, collets are important devices for holding workpieces, and the machining accuracy of their outer cylindrical surface has a significant impact on the subsequent positioning and performance of the workpiece. Currently, the outer cylindrical surface of collets is mainly machined by grinding using CNC grinding machines.

[0003] Traditional methods for grinding the outer diameter of collets primarily involve grinding the fixed outer diameter of the collet using the side of a grinding wheel on a CNC grinding machine. However, this type of CNC grinding machine presents several problems in practical use: the spatial layout between mechanisms is loose, requiring a large floor space; the coordination between components is poor, and the level of automation is low, resulting in low production efficiency. Furthermore, most machines use traditional chuck-type clamping mechanisms, which are cumbersome to install, requiring manual handling of the collets and manual adjustment of the jaw positions to accommodate different collet sizes, leading to low clamping efficiency. Moreover, manual operation cannot ensure consistently consistent clamping force each time, introducing human error that affects machining quality and accuracy. Manual loading and unloading also pose safety hazards, resulting in low stability and high safety risks. Utility Model Content

[0004] To address the aforementioned problems, the present invention provides a collet-operated CNC grinding machine for external cylindrical grinding, which solves the problems of low production efficiency and low processing quality and precision of existing collet-operated CNC grinding machines. The machine includes a worktable; a feed slide is provided on the surface of the worktable, and the feed slide is slidably connected to the worktable surface; the feed slide includes a base and a material plate vertically connected to the base; a clamping mechanism is provided on the base; a loading mechanism and a conveying mechanism located near the discharge end of the loading mechanism are provided on the material plate; the conveying mechanism transports the collet from the loading mechanism to the clamping mechanism; a grinding mechanism is fixed to the worktable surface on one side of the clamping mechanism, and a material unloading and conveying mechanism is provided on the base on the other side; the clamping mechanism and the grinding mechanism cooperate to process the external cylindrical shape of the collet.

[0005] Preferably, the grinding mechanism includes a fixed base and a grinding wheel mounted on the fixed base, wherein the outer cylindrical surface of the grinding wheel has a polygonal structure.

[0006] Preferably, the feeding mechanism includes a downwardly inclined slide, a first baffle assembly, and a second baffle assembly. The first baffle assembly and the second baffle assembly are arranged near the discharge end of the slide and cooperate with each other to form a channel for a single collet to pass through.

[0007] Preferably, the first baffle assembly includes a first baffle and a first drive unit, with the output shaft of the first drive unit connected to the first baffle; the second baffle assembly includes a second baffle and a second drive unit, with the output shaft of the second drive unit connected to the second baffle; and the first drive unit and the second drive unit are connected to a control mechanism.

[0008] Preferably, the first baffle is set vertically, and the second baffle is set inclined towards the first baffle. The distance between the front end of the first baffle and the front end of the second baffle is the same as the length of a single collet.

[0009] Preferably, the clamping mechanism includes a fixed ejector pin and a movable ejector pin arranged opposite to each other. The movable ejector pin is slidably connected to the base, and the fixed ejector pin and the movable ejector pin cooperate to clamp the collet.

[0010] Preferably, the conveying mechanism includes a robotic arm mounted on a material plate and a gripper mounted at the front end of the robotic arm, and the robotic arm can move along the X-axis, Y-axis and Z-axis directions.

[0011] Preferably, a dressing mechanism is provided on one side of the grinding wheel. The dressing mechanism includes a dressing longitudinal slide that is slidably connected to the surface of the fixed seat, a dressing transverse slide that is slidably connected to the surface of the dressing longitudinal slide, and a dresser provided on the dressing transverse slide. The dresser cooperates with the grinding wheel to dress it.

[0012] Preferably, the feed slide is connected to a drive mechanism that moves the feed slide along the surface of the worktable.

[0013] Preferably, the workbench surface is provided with a protective cover.

[0014] The beneficial effects of this utility model are as follows: Through the cooperation of various mechanisms, the entire process of the collet external cylindrical CNC grinding machine, from loading, handling, grinding to unloading, is fully automated; the mechanisms are arranged sequentially along the moving direction of the feed slide, resulting in high space utilization; the collets do not need to be transported back and forth from loading to unloading, thus improving production efficiency. The outer cylindrical surface of the grinding wheel has a polygonal structure, which allows for the processing of multiple surface segments in one operation, reducing the time required for tool changes or grinding wheel adjustments. The first baffle assembly and the second baffle assembly cooperate with each other to form a channel for individual collets to pass through, ensuring that only one collet can pass through the discharge end of the slide at a time. This ensures that the collets slide down the slide in an orderly manner to the discharge end, avoiding excess material or jamming, making the entire loading process more efficient. The clamping mechanism includes a fixed ejector pin and a movable ejector pin arranged opposite each other, which cooperate to clamp the collets. By adjusting the stroke of the movable ejector pin, it can adapt to collets of different lengths without changing the fixture, making it widely applicable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view schematic diagram of the present utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Symbols in the diagram: 1. Worktable; 2. Feed slide; 3. Clamping mechanism; 4. Loading mechanism; 5. Transport mechanism; 6. Grinding mechanism; 7. Unloading conveyor mechanism; 8. Dressing mechanism; 9. Protective cover; 201. Base; 202. Material plate; 301. Fixed ejector pin; 302. Movable ejector pin; 401. Slide; 402. First baffle assembly; 403. Second baffle assembly; 601. Fixed seat; 602. Grinding wheel; 603. Grinding wheel cover; 801. Dressing longitudinal slide; 802. Dressing transverse slide; 803. Dresser. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] The present application will now describe a collet-type external cylindrical CNC grinding machine provided in the embodiments.

[0023] Please see Figure 1 and Figure 2 The diagram shows the structure of this utility model from different angles. The collet outer diameter CNC grinding machine includes a worktable 1; a feed slide 2 is provided on the surface of the worktable 1, and the feed slide 2 is slidably connected to the surface of the worktable 1; the feed slide 2 includes a base 201 and a material plate 202 vertically connected to the base 201; a clamping mechanism 3 is provided on the base 201; a loading mechanism 4 and a conveying mechanism 5 are provided on the material plate 202 near the discharge end of the loading mechanism 4; the conveying mechanism 5 conveys the collet in the loading mechanism 4 to the clamping mechanism 3; a grinding mechanism 6 is fixed on the surface of the worktable 1 on one side of the clamping mechanism 3, and a unloading conveying mechanism 7 is provided on the base 201 on the other side; the clamping mechanism 3 and the grinding mechanism 6 cooperate to process the outer diameter of the collet. Specifically, the loading mechanism 4 transports individual collets to the discharge port in an orderly manner. The transport mechanism 5 grabs the collets and transports them to the clamping mechanism 3 for clamping. The feed slide 2 drives the clamping mechanism 3 to move closer to the grinding mechanism 6. The grinding mechanism 6 processes the outer diameter of the collets. After processing, the clamping mechanism 3 releases the collets, and the collets automatically fall into the unloading conveyor mechanism 7 and are transferred to the next station. Through the cooperation of various mechanisms, the entire process of the collet outer diameter CNC grinding machine from loading, transport, grinding to unloading is automated. The mechanisms are arranged sequentially along the moving direction of the feed slide 2, resulting in high space utilization. The collets do not need to be transported back and forth from loading to unloading, thus improving production efficiency.

[0024] Furthermore, the grinding mechanism 6 includes a fixed base 601 and a grinding wheel 602 mounted on the fixed base 601. The outer surface of the grinding wheel 602 has a polygonal structure. The polygonal structure matches the outer circle of the collet and is used to directly grind the outer circle of the collet. The polygonal structure completes the machining of multiple surface segments in one operation. Compared with the traditional multi-process, multi-grinding wheel machining method, the polygonal structure allows the outer circle of the collet to be machined in one operation, reducing the time required for tool changing or adjusting the grinding wheel 602.

[0025] Furthermore, the feeding mechanism 4 includes a downwardly inclined slide 401, a first baffle assembly 402, and a second baffle assembly 403. The first baffle assembly 402 and the second baffle assembly 403 are positioned near the discharge end of the slide 401 and cooperate with each other to form a channel for a single collet to pass through. When the operator places the collet into the slide 401, the collet slides towards the discharge end of the slide 401 under the action of gravity. The first baffle assembly 402 and the second baffle assembly 403 cooperate with each other to ensure that only one collet can pass through the discharge end of the slide 401 at a time.

[0026] Furthermore, the first baffle assembly 402 includes a first baffle and a first drive unit, with the output shaft of the first drive unit connected to the first baffle; the second baffle assembly 403 includes a second baffle and a second drive unit, with the output shaft of the second drive unit connected to the second baffle; a control mechanism is connected to the first drive unit and the second drive unit. Under the action of the first drive unit and the second drive unit, the first baffle and the second baffle move in coordination. The control mechanism adjusts the feeding rhythm according to the equipment status, avoiding situations of waiting for material or accumulation of collets, thus realizing automated feeding of collets and improving equipment utilization. In this embodiment, the first drive unit and the second drive unit are drive devices such as linear motors or cylinders.

[0027] Furthermore, the first baffle is set vertically, and the second baffle is set inclined towards the first baffle to improve the accuracy of the collet positioning; the distance between the front end of the first baffle and the front end of the second baffle is the same as the length of a single collet.

[0028] Specifically, the control mechanism controls the first drive unit, which drives the first baffle to move downward. At the same time, the second drive unit, under the control of the control mechanism, drives the second baffle to move upward. The two work together to form a channel through which a single collet can pass, with the first baffle, the second baffle, and the slide 401. This ensures that the collets slide down the slide 401 one by one in an orderly manner to the discharge port, avoiding excess material or jamming, and making the entire feeding process more efficient.

[0029] Specifically, the clamping mechanism 3 includes a fixed ejector pin 301 and a movable ejector pin 302 disposed opposite to each other. The movable ejector pin 302 is slidably connected to the base 201, and the fixed ejector pin 301 and the movable ejector pin 302 cooperate to clamp the collet. By adjusting the stroke of the movable ejector pin 302, it can accommodate collets of different sizes without changing the clamps, thus having a wide range of applications. In this embodiment, the movable ejector pin 302 is disposed on an ejector pin slide and is slidably connected to the base 201 through the ejector pin slide.

[0030] Specifically, the conveying mechanism 5 includes a robotic arm mounted on the material plate 202 and a gripper mounted at the front end of the robotic arm. The robotic arm can move along the X-axis, Y-axis and Z-axis directions, and the gripper drives the collet to move freely in the vertical and horizontal directions.

[0031] When the collet reaches the discharge end of the slide 401, the robotic arm moves the gripper downwards to the collet, where the gripper closes and grasps the collet. The robotic arm then moves the collet upwards to its original position and horizontally above the clamping mechanism 3. Next, the robotic arm moves the collet downwards, placing it on the fixed ejector pin 301. The movable ejector pin 302 moves towards the fixed ejector pin 301, accurately and firmly clamping the collet for subsequent processing by the grinding mechanism 6. After grinding, the movable ejector pin 302 retracts to release the clamp, and the processed collet automatically falls into the unloading conveyor mechanism 7 and is transferred to the next station. The movable ejector pin 302 returns to its initial position, awaiting the next workpiece loading. When the grinding mechanism 6 is working, the robotic arm retracts to its original position, the loading mechanism 4 continues loading, the robotic arm moves the gripper downwards to grasp the collet, and the robotic arm moves upwards, waiting for the previous collet to fall into the unloading conveyor mechanism 7 for the next collet to be loaded and ground.

[0032] The cooperation between the clamping mechanism 3 and the transport mechanism 5 ensures the positioning accuracy of the collet during grinding and reduces the processing deviation caused by transport errors. During the grinding process, the clamping force of the clamping mechanism 3 on the collet remains consistent, which improves the processing consistency of the product and reduces the fluctuation of processing dimensions.

[0033] Furthermore, a dressing mechanism 8 is provided on one side of the grinding wheel 602. The dressing mechanism 8 includes a dressing longitudinal slide 801 slidably connected to the surface of the fixed base 601, a dressing transverse slide 802 slidably connected to the surface of the dressing longitudinal slide 801, and a dresser 803 provided on the dressing transverse slide 802. The dresser 803 cooperates with the grinding wheel 602 to dress it. Under the action of the dressing longitudinal slide 801 and the dressing transverse slide 802, the dresser 803 can move horizontally along the surface of the fixed base 601 to accurately dress different positions of the grinding wheel 602, ensuring the shape accuracy of the grinding wheel 602, thereby improving the accuracy and quality of the grinding process.

[0034] Specifically, the feed slide 2 is connected to a drive mechanism that moves the feed slide 2 along the surface of the worktable 1. When the collet is clamped by the clamping mechanism 3, the drive mechanism moves the entire feed slide 2 toward the grinding mechanism 6 until the collet contacts the grinding mechanism 6 and the grinding mechanism 6 begins operation. After the collet grinding is completed, the drive mechanism moves the feed slide 2 back to its original position, the clamping mechanism 3 releases, and the processed collet automatically falls into the unloading conveyor mechanism 7.

[0035] Specifically, the surface of the workbench 1 is provided with a protective cover 9.

[0036] Specifically, a removable grinding wheel cover 603 is provided around the grinding mechanism 6 to prevent fragments from flying out during grinding.

[0037] The working process of this utility model is as follows: The collet to be processed is placed in the slide 401. At this time, the first and second baffles are closed, preventing the collet from sliding down. After the device is started, the control mechanism manipulates the first baffle to move downward and the second baffle to move upward. Under the action of gravity, the single collet slides to the discharge end of the slide 401. The gripper descends and grabs the collet, moves upward under the drive of the robotic arm, and then moves horizontally above the clamping mechanism 3. Then it descends and accurately places the collet on the fixed ejector pin 301. The movable ejector pin 302 moves towards the fixed ejector pin 301 and clamps the collet. The gripper releases and returns to the initial position. Under the action of the feed slide 2, the clamping mechanism 3 drives the collet to approach the grinding wheel 602. The grinding wheel 602 rotates at high speed to perform grinding operations on the collet until the predetermined processing accuracy is achieved. After grinding is completed, the feed slide 2 returns to its original position, and at the same time, the movable ejector pin 302 retracts to its original position. The collet automatically falls into the unloading conveyor mechanism 7. The gripper returns to its original position, then the first baffle moves down, the second baffle moves up, and the next collet rolls in an orderly manner to the discharge port end of slide 401, and so on.

[0038] In this invention, the entire process of a collet-operated CNC grinding machine, from loading, handling, grinding to unloading, is automated through the cooperation of various mechanisms. The mechanisms are arranged sequentially along the moving direction of the feed slide 2, maximizing space utilization. The collets do not require reciprocating handling from loading to unloading, improving production efficiency. The outer surface of the grinding wheel 602 has a polygonal structure, allowing for the simultaneous machining of multiple surface segments, reducing the time required for tool changes or wheel adjustments. The first baffle assembly 402 and the second baffle assembly 403 cooperate with the slide rail 401 to form a channel for individual collets, ensuring that only one collet can pass through the outlet end of the slide rail 401 at a time. This guarantees that the collets slide orderly along the slide rail 401 to the outlet end, preventing excess material or jamming, and making the entire loading process more efficient. The clamping mechanism 3 includes a fixed ejector pin 301 and a movable ejector pin 302 arranged opposite each other, which cooperate to clamp the collets. By adjusting the stroke of the movable ejector pin 302, it can adapt to collets of different lengths without changing the clamps, making it widely applicable.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A collet-operated CNC grinding machine for external cylindrical grinding, comprising a worktable, characterized in that: The worktable surface is provided with a feed slide, which is slidably connected to the worktable surface. The feed slide includes a base and a material plate vertically connected to the base. The base is provided with a clamping mechanism, and the material plate is provided with a feeding mechanism and a conveying mechanism located near the discharge end of the feeding mechanism. The conveying mechanism conveys the collet in the feeding mechanism to the clamping mechanism. One side of the clamping mechanism is provided with a grinding mechanism fixed to the worktable surface, and the other side is provided with a material unloading and conveying mechanism located on the base. The clamping mechanism and the grinding mechanism cooperate to process the outer diameter of the collet.

2. The collet-operated CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The grinding mechanism includes a fixed base and a grinding wheel mounted on the fixed base, wherein the outer circular surface of the grinding wheel has a polygonal structure.

3. The collet-operated CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The feeding mechanism includes a downwardly inclined slide, a first baffle assembly, and a second baffle assembly. The first baffle assembly and the second baffle assembly are located near the discharge port end of the slide and cooperate with each other to form a channel for a single collet to pass through.

4. The collet-operated CNC grinding machine for external cylindrical grinding as described in claim 3, characterized in that: The first baffle assembly includes a first baffle and a first drive unit, the output shaft of the first drive unit being connected to the first baffle; the second baffle assembly includes a second baffle and a second drive unit, the output shaft of the second drive unit being connected to the second baffle; the first drive unit and the second drive unit are connected to a control mechanism.

5. A collet-operated CNC grinding machine for external cylindrical grinding as described in claim 4, characterized in that: The first baffle is set vertically, and the second baffle is set inclined towards the first baffle. The distance between the front end of the first baffle and the front end of the second baffle is the same as the length of a single collet.

6. The collet-operated CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The clamping mechanism includes a fixed pin and a movable pin arranged opposite to each other. The movable pin is slidably connected to the base, and the fixed pin and the movable pin cooperate to clamp the collet.

7. A collet-operated CNC grinding machine for external cylindrical grinding as described in claim 2, characterized in that: A dressing mechanism is provided on one side of the grinding wheel. The dressing mechanism includes a dressing longitudinal slide that is slidably connected to the surface of the fixed base. A dressing transverse slide is slidably connected to the surface of the dressing longitudinal slide. A dresser is provided on the dressing transverse slide. The dresser cooperates with the grinding wheel to dress it.

8. A collet-type CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The conveying mechanism includes a robotic arm mounted on the material plate and a gripper mounted at the front end of the robotic arm. The robotic arm can move along the X-axis, Y-axis and Z-axis.

9. A collet-operated CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The feed slide is connected to a drive mechanism that moves the feed slide along the surface of the worktable.

10. A collet-operated CNC grinding machine for external cylindrical grinding as described in claim 1, characterized in that: The workbench surface is equipped with a protective cover.

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