Motor end cover clamping device

Abstract

The utility model provides a kind of motor end cover clamping device, including rack, the outer clamping ring is fixedly arranged on the rack, the inner clamping ring is slidably arranged in the outer clamping ring, the outer wall of the inner clamping ring and the inner wall of the outer clamping ring abut;The outer clamping ring is provided with multiple centring rods;Centring rod includes first protruding part and second protruding part, the first protruding part is hinged with the outer clamping ring, the inner clamping ring is provided with the deflection slot corresponding the second protruding part, when the inner clamping ring rotates, will drive the centring rod swing. Through the structure that inner clamping ring rotates and drives centring rod swing, multiple clamping points can be retracted to the center of circle simultaneously, automatic centring clamping is realized, and clamping efficiency is improved. The centring rod structure of swing type is used, compared with traditional linear slider structure, it occupies smaller space, and rod-shaped structure can effectively avoid the side machining position of motor end cover, solve the problem of machining interference and shielding.

Description

Technical Field

[0001] This utility model relates to the field of motor end cover clamping, specifically a motor end cover clamping device. Background Technology

[0002] Currently, in the motor manufacturing process, the motor end cover, as a key structural component, is typically cast and then undergoes end face finishing on a machining center and precise hole machining on a drilling machine. To ensure machining accuracy, specialized clamping devices must be used to firmly fix the motor end cover to the operating table during these processes to prevent it from shifting during high-speed cutting or drilling.

[0003] Existing motor end cover clamping devices often have the following problems when clamping motor end covers: 1. Insufficient fit and inadequate limiting: The clamping structure of some clamping devices cannot fully fit the edge of motor end caps of various shapes and sizes, resulting in poor clamping and limiting effect.

[0004] 2. Limited applicability: Due to the wide variety of shapes, sizes and types of motor end caps, existing clamping devices often lack sufficient adaptability and adjustment capabilities, making it difficult to meet the universal clamping requirements of various end caps.

[0005] 3. Machining interference and obstruction: Existing radial clamping structures (such as structures using multiple large-volume support shells and blocks) usually occupy a large space around the motor end cover, causing serious physical obstruction and operational inconvenience to side machining operations (such as drilling and milling).

[0006] Therefore, there is an urgent need for a new type of motor end cap clamping device. This device should not only be able to stably and reliably clamp various types of end caps, but also minimize the obstruction of the side processing area. Utility Model Content

[0007] The purpose of this utility model is to provide a motor end cover clamping device to solve the problems mentioned in the background art, such as poor clamping fit, low versatility, and easy obstruction of the side processing area.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a motor end cover clamping device, comprising a frame, an outer clamping ring fixedly mounted on the frame, an inner clamping ring slidably mounted inside the outer clamping ring, the outer wall of the inner clamping ring abutting against the inner wall of the outer clamping ring; a plurality of centering rods are mounted on the outer clamping ring; each centering rod includes a first protrusion and a second protrusion, the first protrusion being hinged to the outer clamping ring, and the inner clamping ring having a deflection groove corresponding to the second protrusion, such that when the inner clamping ring rotates, it will cause the centering rod to swing; a clamping assembly is mounted on one end of the centering rod facing the center of the inner clamping ring, the clamping assembly including a housing fixed to the centering rod, an ejector block slidably mounted on the housing, and a cam rotatably mounted on the housing, the cam abutting against the ejector block.

[0009] Preferably, a drive gear is fixedly disposed on the inner clamping ring, and a drive rack is slidably disposed on the frame, wherein the drive gear and the drive rack mesh with each other.

[0010] Preferably, a cylinder is also fixedly mounted on the frame, and the movable end of the cylinder is fixedly connected to the drive rack.

[0011] Preferably, the number of the core rods is three, and they are evenly distributed along the circumference.

[0012] Preferably, the ejector block is made of a flexible material.

[0013] The beneficial effects of this utility model are as follows: 1. Linked centering clamping: The structure, which drives the centering rod to swing by rotating the inner clamping ring, enables multiple clamping points to simultaneously converge toward the center, achieving automatic centering clamping and improving clamping efficiency.

[0014] 2. Large clearance space: The swing-type centering rod structure occupies less space compared to the traditional linear slider structure. The rod structure can effectively avoid the side machining position of the motor end cover, solving the problems of machining interference and obstruction.

[0015] 3. Adjustable clamping force: The clamping assembly at the end is equipped with a cam and an ejector block. By rotating the cam, the ejector block can be pushed out, thereby fine-tuning the clamping force or adapting to end caps with different tolerance ranges, ensuring the reliability of clamping. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Fig. 1 This is a top view of an embodiment of the present invention; Fig. 2 This is a schematic diagram of the structure of the inner clamping ring according to an embodiment of the present invention; Fig. 3 This is a cross-sectional view of the clamping assembly in one embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1-Frame; 2-Outer clamping ring; 3-Inner clamping ring; 31-Deflection groove; 32-Drive gear; 4-Alignment rod; 41-First protrusion; 42-Second protrusion; 5-Clamping assembly; 51-Housing; 52-Ejector block; 53-Cam; 6-Drive rack; 7-Cylinder. Detailed Implementation

[0019] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0020] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1 like Figs. 1 to 3 As shown, this utility model provides a motor end cover clamping device, including a frame 1. The frame 1 serves as the supporting base for the entire device and is typically fixed on the worktable of a machining center or drilling machine.

[0022] An outer clamping ring 2 is fixedly mounted on the frame 1. The outer clamping ring 2 is a stationary component, and an inner clamping ring 3 is slidably mounted inside it. The outer wall of the inner clamping ring 3 is in close contact with the inner wall of the outer clamping ring 2, so that the inner clamping ring 3 can perform concentric circular rotation within the outer clamping ring 2.

[0023] To enable gripping and securing the motor end cover, the outer clamping ring 2 is provided with multiple centering rods 4. In this embodiment, preferably, there are three centering rods 4, which are evenly distributed along the circumference (one every 120 degrees), thereby forming a stable three-point centering clamping structure.

[0024] The specific structure of the core rod 4 includes a first protrusion 41 and a second protrusion 42.

[0025] The first protrusion 41 serves as a fulcrum and is hinged to the outer clamping ring 2 (e.g., connected by a pin), allowing the entire centering rod 4 to swing around the hinge point.

[0026] The second protrusion 42 serves as the power input end, cooperating with the movement of the inner clamping ring 3. Specifically, the inner clamping ring 3 has a deflection groove 31 corresponding to the second protrusion 42. This deflection groove 31 is usually designed as an arc or inclined groove with a certain angle.

[0027] The working principle is as follows: When the inner clamping ring 3 rotates relative to the outer clamping ring 2, the sidewall of the deflection groove 31 will squeeze or guide the second protrusion 42 to move. Since the first protrusion 41 is hinged and fixed, this movement is converted into the swinging of the centering rod 4 around the first protrusion 41. By designing the trajectory of the deflection groove 31, the centering rod 4 can be controlled to swing inward (towards the center) to clamp the workpiece, or swing outward to release the workpiece.

[0028] A clamping assembly 5 is provided at one end of the centering rod 4 facing the center of the inner clamping ring 3 (i.e., the clamping end). The clamping assembly 5 includes a housing 51 fixed to the centering rod 4. An ejector block 52 is slidably provided inside or on the surface of the housing 51, and a cam 53 is rotatably provided on the housing 51. The profile surface of the cam 53 abuts against the rear end of the ejector block 52.

[0029] Once the centering rod 4 has swung into position and contacted the workpiece, if further tightening or fine-tuning of the clearance is required, the operator or auxiliary mechanism can rotate the cam 53. When the cam 53 rotates, its long-diameter end pushes the ejector block 52 outward, thereby firmly pressing it against the side wall of the motor end cover. It is understood that the cam 53 is connected to a drive motor, which is used to achieve the clamping or releasing operation.

[0030] Preferably, the ejector block 52 is made of a flexible material (such as polyurethane or hard rubber), which not only increases friction and prevents the workpiece from slipping, but also avoids the fixture from scratching the surface of the motor end cover.

[0031] To achieve automated drive of the device, a drive gear 32 is fixedly mounted on the inner clamping ring 3. A drive rack 6 is slidably mounted on the frame 1, and the drive gear 32 meshes with the drive rack 6. Furthermore, a cylinder 7 is fixedly mounted on the frame 1, and the movable end (piston rod) of the cylinder 7 is fixedly connected to the drive rack 6.

[0032] Summary of operation process: Feeding: Cylinder 7 retracts, driving the rack to move. The rack drives the gear and inner clamping ring 3 to rotate in the opposite direction. At this time, the deflection groove 31 drives the centering rod 4 to swing outward, opening the clamping space. The motor end cover to be processed is placed in the center of the device.

[0033] Clamping: Cylinder 7 extends, pushing the rack to move, and the inner clamping ring 3 rotates in the forward direction. The deflection groove 31 pushes the centering rod 4 to swing towards the center until the clamping assembly 5 at the ends of the three centering rods 4 surrounds and contacts the motor end cover.

[0034] Locking: For a tighter fit, rotate the cam 53 on the housing 51 to push out the ejector block 52 and achieve final clamping.

[0035] Machining: Machining equipment performs end face or drilling machining on the end cap. Due to the slender structure and fixed position of the mandrel 4, the obstruction to the machining of the side holes is greatly reduced.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A motor end cover clamping device, comprising a frame, characterized in that, An outer clamping ring is fixedly installed on the frame, and an inner clamping ring is slidably installed inside the outer clamping ring. The outer wall of the inner clamping ring abuts against the inner wall of the outer clamping ring. Multiple centering rods are provided on the outer clamping ring. The centering rod includes a first protrusion and a second protrusion. The first protrusion is hinged to the outer clamping ring. The inner clamping ring is provided with a deflection groove corresponding to the second protrusion. When the inner clamping ring rotates, it will drive the centering rod to swing. A clamping assembly is provided at one end of the centering rod facing the center of the inner clamping ring. The clamping assembly includes a housing fixed to the centering rod, an ejector block is slidably provided on the housing, and a cam is rotatably provided on the housing, the cam abutting against the ejector block.

2. The motor end cover clamping device according to claim 1, characterized in that, A drive gear is fixedly mounted on the inner clamping ring, and a drive rack is slidably mounted on the frame. The drive gear and the drive rack mesh with each other.

3. The motor end cover clamping device according to claim 2, characterized in that, A cylinder is also fixedly mounted on the frame, and the movable end of the cylinder is fixedly connected to the drive rack.

4. The motor end cover clamping device according to claim 1, characterized in that, The number of the centering rods is three.

5. The motor end cover clamping device according to claim 1, characterized in that, The ejector block is made of flexible material.

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