A kind of fixed clamp for milling plane machining of shaft parts

Abstract

This utility model relates to the technical field of fixed fixtures for milling planes of shaft parts, and discloses a fixed fixture for milling planes of shaft parts, including a base and multiple clamping seats slidably connected inside the upper side of the base. A clamping and positioning mechanism and a flexible locking mechanism are provided on one side of each clamping seat. The flexible locking mechanism is located on one side of the clamping and positioning mechanism. The clamping and positioning mechanism includes multiple sliding grooves evenly distributed inside the upper side of the base. Multiple through slots are opened inside one side of each clamping seat. V-shaped clamping blocks are slidably connected inside each sliding groove. A pressure plate is fixedly connected to the side of each V-shaped clamping block near the sliding groove. The flexible locking mechanism is used to position shaft parts with a stepped structure, thereby improving the clamping accuracy of the device. The flexible locking mechanism is used to lock the positioned workpiece, increasing the locking area of ​​the workpiece, increasing clamping stability and accuracy, and reducing damage to the workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of fixing fixtures for milling planes of shaft parts, specifically a fixing fixture for milling planes of shaft parts. Background Technology

[0002] Milling planes on shaft parts involves process elements such as workpiece positioning, cutting parameters, and toolpath, while the fixture comprises core components including positioning elements, clamping mechanisms, and the fixture body. These two are interconnected through clamping schemes and machining requirements. The fixture provides stable positioning references and constraints for the machining process, directly impacting the feasibility and consistency of machining. Existing technologies often focus on optimizing single functions, while there is still room for improvement in system adaptability and structural integration.

[0003] Among common fixtures, V-blocks offer excellent centering and clamping adaptability, making fixtures composed of this type of structure simple, stable, and less prone to failure. This makes them highly practical for shaft fixtures. However, although shaft parts are cylindrical, this does not mean that their overall diameter is the same. When shaft parts have a stepped structure, the clamping effect of this type of fixture will be greatly reduced, making the practicality of the device need to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a fixing fixture for milling planes of shaft parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixed fixture for milling planes of shaft parts, comprising a base and a plurality of clamping seats that are slidably connected inside the upper side of the base, wherein a clamping and positioning mechanism and a flexible locking mechanism are provided on one side of the clamping and positioning mechanism, and the flexible locking mechanism is provided on one side of the clamping and positioning mechanism;

[0006] The clamping and positioning mechanism includes multiple sliding grooves, which are evenly distributed inside the upper side of the base platform. Multiple through slots are opened inside one side of the clamping seat. V-shaped clamping blocks are slidably connected inside each sliding groove. A pressure plate is fixedly connected to the side of each V-shaped clamping block near the sliding groove. Multiple positioning platforms, rotating seats, and stops are fixedly connected to the side of the clamping seat near the sliding groove. The positioning platforms are located outside the multiple rotating seats and stops. Each rotating seat and stop is grouped and evenly distributed on the upper side of the sliding groove. A screw is rotatably connected inside one positioning platform. A nut is threaded onto the outer wall of the screw. A rotating rod is rotatably connected to the outer wall of one end of the screw. Multiple eccentric wheels are fixedly connected to the outer wall of the rotating rod, and all eccentric wheels are located on the upper side of the pressure plate.

[0007] Preferably, the eccentric wheels are all rotatably connected to adjacent rotary seats.

[0008] Preferably, one end of the screw is fixedly connected to a U-shaped columnar structure that is rotatably connected to the rotating rod.

[0009] Preferably, each of the rotating rods has a flexible structure with frictional force between it and the eccentric wheel.

[0010] Preferably, the flexible locking mechanism includes a pressure groove and a conical slot. The pressure grooves are all located on the side of the eccentric wheel near the screw. A sliding rod is slidably connected inside the pressure plate. A spring is fixedly connected between the outer wall of the sliding rod and the upper surface of the pressure plate. The upper end of the sliding rod abuts against the pressure groove. The conical slots are all located on the side of the eccentric wheel away from the screw. Multiple conical rollers are fixedly connected to the outer wall of the rotating rod. The conical slots are slidably connected to adjacent conical rollers. A worm gear is fixedly connected to the outer wall of the end of the rotating rod away from the screw. A hanger is rotatably connected to the outer wall of the end of the rotating rod near the worm gear. A worm is rotatably connected inside the hanger. The worm meshes with the worm gear. An insert rod is fixedly connected to one side of the hanger. The insert rod is slidably connected inside a positioning platform near the worm gear.

[0011] Preferably, the conical groove is arranged parallel to the inner inclined surface of the conical chuck.

[0012] Preferably, the spring force is set to be less than the coefficient of friction between the rotating rod and the eccentric wheel.

[0013] Compared with the prior art, this utility model provides a fixing fixture for milling planes of shaft parts, which has the following advantages:

[0014] 1. The flexible locking mechanism is used to position shaft parts with stepped structures. This mechanism forms an adaptive clamping by multiple clamps and V-shaped clamps. With the help of the pressure plate and eccentric wheel, it forms a differential positioning for each V-shaped clamp, which enables the device to form a precise docking according to the outer diameter of different sections of the part, thereby improving the clamping accuracy of the device.

[0015] 2. The flexible locking mechanism is used to lock the workpiece after positioning. After positioning, the nuts can be used to make multiple tapered slots and tapered rollers mate. Then, the worm gear can make multiple V-shaped clamps at different heights clamp the workpiece. This allows multiple V-shaped clamps to fit and lock the workpiece in different positions, thereby increasing the locking area of ​​the workpiece, increasing clamping stability and accuracy, and reducing damage to the workpiece. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0020] Figure 4 This is a schematic diagram of the positioning platform in this utility model;

[0021] Figure 5 This is a schematic diagram of the conical chuck wheel in this utility model.

[0022] In the diagram: 1. Base platform; 2. Clamping seat; 3. Clamping and positioning mechanism; 301. Slide groove; 302. Through groove; 303. V-shaped clamping block; 304. Pressure plate; 305. Positioning platform; 306. Rotary seat; 307. Stop block; 308. Screw; 309. Nut; 310. Rotating rod; 311. Eccentric wheel; 4. Flexible locking mechanism; 401. Pressing groove; 402. Slide rod; 403. Spring; 404. Conical groove; 405. Conical chuck wheel; 406. Worm gear; 407. Hanger; 408. Worm; 409. Insert rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-5 The present invention provides a technical solution: a fixed fixture for milling planes of shaft parts, including a base 1 and a plurality of clamping seats 2 slidably connected inside the upper side of the base 1. A clamping and positioning mechanism 3 and a flexible locking mechanism 4 are provided on one side of the clamping and positioning mechanism 3. The flexible locking mechanism 4 is provided on one side of the clamping and positioning mechanism 3.

[0027] This mechanism is used for positioning and clamping workpieces. It improves the adaptability and accuracy of clamping shaft-type workpieces with different diameter profiles. The clamping and positioning mechanism 3 includes multiple sliding grooves 301, which are evenly distributed inside the upper side of the base 1. Multiple through slots 302 are opened inside one side of the clamping seat 2. V-shaped clamping blocks 303 are slidably connected inside each sliding groove 301. Pressure plates 304 are fixedly connected to the side of each V-shaped clamping block 303 near the sliding groove 301. Multiple fixed plates 304 are fixedly connected to the side of the clamping seat 2 near the sliding groove 301. Positioning platform 305, rotating seat 306, and stop block 307. Positioning platform 305 is located on the outside of multiple rotating seats 306 and stop blocks 307. Each rotating seat 306 and stop block 307 is evenly distributed in a group on the upper side of slide groove 301. A screw 308 is rotatably connected inside one side of positioning platform 305. A nut 309 is threadedly connected to the outer wall of screw 308. A rotating rod 310 is rotatably connected to the outer wall of one end of screw 308. Multiple eccentric wheels 311 are fixedly connected to the outer wall of rotating rod 310. All eccentric wheels 311 are located on the upper side of pressure plate 304.

[0028] Furthermore, the eccentric wheels 311 are all rotatably connected to the adjacent swivels 306.

[0029] Furthermore, one end of the screw 308 is fixedly connected to a U-shaped columnar structure that is rotatably connected to the rotating rod 310.

[0030] Furthermore, each of the rotating rods 310 and the eccentric wheel 311 is provided with a flexible structure that can generate friction.

[0031] Example 2:

[0032] This mechanism is used to lock the workpiece, and it improves the locking effect on the workpiece. Please refer to [link / reference]. Figure 1-5Furthermore, in conjunction with Embodiment 1, the flexible locking mechanism 4 includes a pressure groove 401 and a conical slot 404. The pressure grooves 401 are all located on the side of the eccentric wheel 311 closest to the screw 308. A sliding rod 402 is slidably connected inside the pressure plate 304. A spring 403 is fixedly connected between the outer wall of the sliding rod 402 and the upper surface of the pressure plate 304. The upper end of the sliding rod 402 abuts against the pressure groove 401. The conical slots 404 are all located on the side of the eccentric wheel 311 away from the screw 308. A spring 403 is fixedly connected to the outer wall of the rotating rod 310. Multiple tapered chucks 405 and tapered grooves 404 are slidably connected to adjacent tapered chucks 405. A worm gear 406 is fixedly connected to the outer wall of the end of the rotating rod 310 away from the screw 308. A hanger 407 is rotatably connected to the outer wall of the end of the rotating rod 310 close to the worm gear 406. A worm 408 is rotatably connected inside the hanger 407. The worm 408 meshes with the worm gear 406. An insert rod 409 is fixedly connected to one side of the hanger 407. The insert rod 409 is slidably connected inside a positioning platform 305 close to the worm gear 406.

[0033] Furthermore, the conical groove 404 and the inner inclined surface of the conical roller 405 are arranged parallel to each other.

[0034] Furthermore, the spring 403 is configured to have a spring force less than the coefficient of friction between the rotating rod 310 and the eccentric wheel 311.

[0035] In actual operation, when this device is used, the user passes the workpiece to be processed through multiple V-shaped clamps 303. Then, the user rotates the worm gear 406 to drive multiple eccentric wheels 311 to rotate. As the multiple eccentric wheels 311 rotate, the arc surfaces of the eccentric wheels 311 all contact the corresponding pressure plates 304. The eccentric wheels 311 push the pressure plates 304 to make the V-shaped clamps move downward, thereby clamping the workpiece. At this time, the corresponding V-shaped clamps are limited by the workpiece, thus preventing the eccentric wheels 311 from rotating. The spring 403 can resist the eccentric wheels 311 to avoid gaps between the eccentric wheels 311 and the workpiece during rotation. After the multiple V-shaped clamps 303 clamp the workpiece, the user can turn the nut 309 to make the corresponding conical chuck 405 engage with the conical slot 404. Then, the user can rotate the worm gear 408 to make all the eccentric wheels 311 press against the pressure plate 304 to lock the workpiece, thereby increasing the contact area between the workpiece and the fixture and enhancing the clamping adaptability.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A fixing fixture for milling planes of shaft parts, comprising a base (1) and a plurality of clamping seats (2) slidably connected inside the upper side of the base (1), characterized in that: The clamping base (2) is provided with a clamping positioning mechanism (3) and a flexible locking mechanism (4) on one side, and the flexible locking mechanism (4) is provided on one side of the clamping positioning mechanism (3); The clamping and positioning mechanism (3) includes multiple sliding grooves (301), which are evenly distributed inside the upper side of the base (1). Multiple through slots (302) are provided inside one side of the clamping seat (2). V-shaped clamping blocks (303) are slidably connected inside each sliding groove (301). A pressure plate (304) is fixedly connected to the side of each V-shaped clamping block (303) near the sliding groove (301). Multiple positioning platforms (305), rotating seats (306), and stops (307) are fixedly connected to the side of the clamping seat (2) near the sliding groove (301). The positioning platforms (305)... 05) Set on the outside of multiple rotating seats (306) and stop blocks (307), each of the rotating seats (306) and stop blocks (307) is evenly distributed in a group on the upper side of the slide groove (301). A screw (308) is rotatably connected inside the positioning platform (305) on one side. A nut (309) is threadedly connected to the outer wall of the screw (308). A rotating rod (310) is rotatably connected to the outer wall of one end of the screw (308). Multiple eccentric wheels (311) are fixedly connected to the outer wall of the rotating rod (310). The eccentric wheels (311) are all set on the upper side of the pressure plate (304).

2. A fixing fixture for milling planes of shaft parts according to claim 1, characterized in that: The eccentric wheels (311) are all rotatably connected to the adjacent swivels (306).

3. A fixing fixture for milling planes of shaft parts according to claim 1, characterized in that: One end of the screw (308) is fixedly connected to a U-shaped columnar structure that is rotatably connected to the rotating rod (310).

4. A fixing fixture for milling planes of shaft parts according to claim 1, characterized in that: Each of the rotating rods (310) and the eccentric wheel (311) is provided with a flexible structure that can generate friction.

5. A fixing fixture for milling planes of shaft parts according to claim 1, characterized in that: The flexible locking mechanism (4) includes a pressure groove (401) and a conical slot (404). The pressure grooves (401) are all located on the side of the eccentric wheel (311) near the screw (308). A sliding rod (402) is slidably connected inside the pressure plate (304). A spring (403) is fixedly connected between the outer wall of the sliding rod (402) and the upper surface of the pressure plate (304). The upper end of the sliding rod (402) abuts against the pressure groove (401). The conical slots (404) are all located on the side of the eccentric wheel (311) away from the screw (308). Multiple conical locking wheels (403) are fixedly connected to the outer wall of the rotating rod (310). 5) The conical slots (404) are all slidably connected to the adjacent conical chucks (405). The outer wall of the end of the rotating rod (310) away from the screw (308) is fixedly connected to a worm gear (406). The outer wall of the end of the rotating rod (310) close to the worm gear (406) is rotatably connected to a hanger (407). The worm (408) is rotatably connected inside the hanger (407). The worm (408) is meshed with the worm gear (406). A plug rod (409) is fixedly connected to one side of the hanger (407). The plug rod (409) is slidably connected inside a positioning platform (305) close to the worm gear (406).

6. A fixing fixture for milling planes of shaft parts according to claim 5, characterized in that: The conical groove (404) and the inner inclined surface of the conical chuck (405) are arranged parallel to each other.

7. A fixing fixture for milling planes of shaft parts according to claim 5, characterized in that: The spring (403) is configured to have a spring force less than the coefficient of friction between the rotating rod (310) and the eccentric wheel (311).

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