Anti-vibration headstock for a lathe

Abstract

The utility model provides a vibration proof type center stand for lathe relates to center stand technical field, including center stand body, the center stand body is by upper fixed ring and lower fixed ring is composed, the right side fixed connection of lower fixed ring has the hinged seat, there is a plurality of support sleeve between upper fixed ring and lower fixed ring equidistance annular distribution, the inside of support sleeve is equipped with locking mechanism, locking mechanism sliding installation has sliding rod, the utility model twists and turns movable sleeve to move up, the bottom of movable sleeve no longer extrudes the top of clamp cylinder through taper groove, clamp cylinder and sliding rod separate, sliding rod can slide up and down in the inside of support sleeve, until the roller of sliding rod bottom end and shaft class spare are pasted, twist and turn movable sleeve to move down, the bottom of movable sleeve extrudes the top of clamp cylinder through taper groove, the top of clamp cylinder contracts inwards, clamp cylinder clamps the outer wall of sliding rod, and then the position of sliding rod is locked, is used to limit the position of shaft class spare, reduces its processing and produces the vibration.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a vibration-damping center support for a lathe. Background Technology

[0002] The lathe center rest is a key auxiliary device for machining long shaft parts. It is fixed to the bed guide rail by three adjustable support jaws, providing an intermediate support point for the workpiece and dispersing the radial force generated by cutting. Its core function is to enhance the rigidity of the workpiece and reduce vibration and deformation during machining. It is especially suitable for slender shafts with a length-to-diameter ratio of more than 15:1 or workpieces made of softer materials, and can significantly improve machining accuracy and surface quality.

[0003] The center rest is a major auxiliary tooling for ensuring the machining accuracy of workpieces. It can improve machining rigidity and prevent bending deformation of workpieces under external forces during machining, thus affecting the machining accuracy of the workpieces. Traditional center rests have three bolt support points, which have certain limitations in design and use. When disassembling and assembling workpieces, the bolts need to be unscrewed, which takes a lot of time and has low work efficiency. Therefore, this utility model proposes a vibration-damping center rest for lathes to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a vibration-damping center support for lathes, which solves the problems of existing traditional center supports having three bolt support points, certain limitations in design and use, and the need to unscrew the bolts from the beginning when disassembling and assembling workpieces, which consumes a lot of time and results in low work efficiency.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a vibration-damping center frame for a lathe, comprising a center frame body, the center frame body being composed of an upper fixed ring and a lower fixed ring, a hinge seat being fixedly connected to the right side of the lower fixed ring, the top of the lower fixed ring being hinged to the upper fixed ring through the hinge seat, a plurality of support sleeves being equidistantly distributed in a ring between the upper fixed ring and the lower fixed ring, a locking mechanism being provided inside the support sleeve, a sliding rod being slidably installed in the locking mechanism, and a fixing mechanism being provided on the left side of the upper fixed ring and the lower fixed ring.

[0006] A further improvement is that the locking mechanism includes a clamp, a telescopic groove, a movable sleeve, and a conical groove. The bottom of the support sleeve is fixedly connected to the clamp, and the top of the clamp has multiple telescopic grooves distributed in a ring. The top of the support sleeve is threadedly connected to the movable sleeve, and the bottom end of the movable sleeve is provided with a conical groove that matches the top of the support sleeve.

[0007] A further improvement is that the bottom end of the sliding rod is provided with a connecting mechanism, and the bottom end of the connecting mechanism is equipped with a roller. The bottom end of the sliding rod is connected to the shaft-like parts through the roller.

[0008] A further improvement is made in that: the connecting mechanism includes a connecting bolt, a connecting frame, a mounting hole, and a connecting pin. The bottom end of the sliding rod is threadedly connected to the connecting bolt, and the bottom end of the connecting bolt is fixedly connected to the connecting frame. Mounting holes are provided on both sides of the roller and the connecting frame. A connecting pin is inserted into the inside of the mounting hole, and one end of the connecting pin is threadedly connected to the inner wall of the mounting hole on one side of the connecting frame.

[0009] A further improvement is that the clamping cylinder is made of spring steel, and the sliding rod passes through the interior of the movable sleeve, the support sleeve, and the clamping cylinder from top to bottom.

[0010] A further improvement is that the bottom end of the lower fixing ring is fixedly connected to a mounting base, and the bottom of the mounting base is symmetrically provided with rectangular grooves that match the lathe slide rail.

[0011] A further improvement is that the fixing mechanism includes a fixing bolt and a threaded hole, the left side of the upper fixing ring is threadedly connected to the fixing bolt, and the left side of the lower fixing ring is provided with a threaded hole matching the fixing bolt.

[0012] The beneficial effects of this utility model are as follows: When the movable sleeve is screwed up, the bottom end of the movable sleeve no longer squeezes the top end of the clamping cylinder through the conical groove, the clamping cylinder separates from the sliding rod, and the sliding rod can slide up and down inside the support sleeve until the roller at the bottom end of the sliding rod is in contact with the shaft part. When the movable sleeve is screwed down, the bottom end of the movable sleeve squeezes the top end of the clamping cylinder through the conical groove, the top end of the clamping cylinder contracts inward, and the clamping cylinder clamps the outer wall of the sliding rod, thereby locking the position of the sliding rod to limit the position of the shaft part, reduce the vibration generated during its processing, and only a few turns of the movable sleeve are needed to control its lifting and lowering. This solves the problem that the traditional center frame in the prior art has three bolt support points, which has certain limitations in design and use. When disassembling and assembling workpieces, the bolts need to be unscrewed from the beginning, which takes a lot of time and has low work efficiency. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 This is a schematic diagram of the support sleeve and sliding rod structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the roller installation of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the support sleeve of this utility model.

[0017] The components are: 1. central frame body; 2. upper fixing ring; 3. lower fixing ring; 4. hinge seat; 5. fixing bolt; 6. support sleeve; 7. sliding rod; 8. roller; 9. clamp; 10. telescopic groove; 11. movable sleeve; 12. conical groove; 13. connecting bolt; 14. connecting frame; 15. mounting hole; 16. connecting pin. Detailed Implementation

[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a vibration-damping center frame for a lathe, including a center frame body 1. The center frame body 1 is composed of an upper fixed ring 2 and a lower fixed ring 3. A hinge seat 4 is fixedly connected to the right side of the lower fixed ring 3. The top of the lower fixed ring 3 is hinged to the upper fixed ring 2 through the hinge seat 4. Multiple support sleeves 6 are equidistantly distributed in a ring between the upper fixed ring 2 and the lower fixed ring 3. A locking mechanism is provided inside the support sleeve 6. A sliding rod 7 is slidably installed in the locking mechanism. A fixing mechanism is provided on the left side of the upper fixed ring 2 and the lower fixed ring 3. The upper fixed ring 2 rotates around the hinge seat 4, opening one side of the upper fixed ring 2 and the lower fixed ring 3, allowing shaft-like parts to enter the inner side of the center frame body 1. Then, the components in the locking mechanism are loosened, and the sliding rod 7 can slide up and down inside the support sleeve 6. The position of the sliding rod 7 is adjusted so that the roller 8 at the bottom of the sliding rod 7 fits against the shaft-like parts. Then, the components in the locking mechanism are tightened to lock the position of the sliding rod 7, thereby restricting the position of the shaft-like parts and reducing vibrations during processing.

[0020] The locking mechanism includes a clamping cylinder 9, a telescopic groove 10, a movable sleeve 11, and a conical groove 12. The clamping cylinder 9 is fixedly connected to the bottom of the support sleeve 6. Multiple telescopic grooves 10 are distributed in a ring on the top of the clamping cylinder 9. The movable sleeve 11 is threadedly connected to the top of the support sleeve 6. The bottom end of the movable sleeve 11 is provided with a conical groove 12 that matches the top of the support sleeve 6. The clamping cylinder 9 is made of spring steel. The sliding rod 7 passes through the interior of the movable sleeve 11, the support sleeve 6, and the clamping cylinder 9 from top to bottom. When the movable sleeve 11 is turned upward, the bottom end of the movable sleeve 11 no longer presses against the top end of the clamping cylinder 9 through the conical groove 12, and the clamping cylinder 9 separates from the sliding rod 7. The sliding rod 7 can then move inside the support sleeve 6. Slide it up and down until the roller 8 at the bottom of the sliding rod 7 is in contact with the shaft part. Twist the movable sleeve 11 to move it downward. The bottom end of the movable sleeve 11 squeezes the top end of the clamping cylinder 9 through the tapered groove 12. The top end of the clamping cylinder 9 contracts inward and clamps the outer wall of the sliding rod 7, thereby locking the position of the sliding rod 7. This is used to limit the position of the shaft part and reduce the vibration generated during its processing. Moreover, it only requires turning the movable sleeve 11 a few times to control its lifting and lowering. This solves the problem that the traditional center frame in the prior art has three bolt support points, which has certain limitations in design and use. When disassembling and assembling workpieces, the bolts need to be unscrewed from the beginning, which takes a lot of time and has low work efficiency.

[0021] The bottom end of the sliding rod 7 is provided with a connecting mechanism, and a roller 8 is installed at the bottom end of the connecting mechanism. The bottom end of the sliding rod 7 is connected to the shaft part through the roller 8. The connecting mechanism includes a connecting bolt 13, a connecting frame 14, a mounting hole 15, and a connecting pin 16. The bottom end of the sliding rod 7 is threadedly connected to the connecting bolt 13, and the bottom end of the connecting bolt 13 is fixedly connected to the connecting frame 14. Mounting holes 15 are provided on both sides of the roller 8 and the connecting frame 14. A connecting pin 16 is inserted into the inside of the mounting hole 15. One end of the connecting pin 16 is threadedly connected to the inner wall of the mounting hole 15 on one side of the connecting frame 14. The roller 8 is inserted into the inside of the connecting frame 14, and the roller 8 and the mounting hole 15 on the connecting frame 14 are positioned relative to each other. Align the connecting pin 16 with the non-threaded side of the mounting hole 15, and screw one end of the connecting pin 16 into the threaded mounting hole 15 to mount the roller 8 at the bottom of the connecting bracket 14. The roller 8 can rotate around the smooth surface of the connecting pin 16. By screwing the connecting bolt 13 into the bottom of the sliding rod 7, the roller 8 is fixed to the bottom of the sliding rod 7. When the roller 8 is in contact with the shaft part, the position of the roller 8 is perpendicular to the length direction of the shaft part. This is used to limit the position of the shaft part while reducing friction and ensuring the service life of the roller 8. When the roller 8 is worn out and can no longer be used, unscrew the connecting bolt 13 from the bottom of the sliding rod 7 to replace the roller 8.

[0022] The bottom end of the lower fixing ring 3 is fixedly connected to a mounting base. The bottom of the mounting base is symmetrically provided with rectangular grooves that match the lathe slide rail. The mounting base at the bottom end of the lower fixing ring 3 is engaged with the lathe slide rail through the rectangular grooves to fix the center frame on the lathe.

[0023] The fixing mechanism includes a fixing bolt 5 and a threaded hole. The left side of the upper fixing ring 2 is threadedly connected to the fixing bolt 5, and the left side of the lower fixing ring 3 is provided with a threaded hole matching the fixing bolt 5. After the non-hinged side of the upper fixing ring 2 and the lower fixing ring 3 are closed, the bottom end of the fixing bolt 5 is screwed into the threaded hole, connecting one side of the upper fixing ring 2 and the lower fixing ring 3 into one piece. After the central frame body 1 wraps the shaft-like parts, the position of the central frame body 1 is fixed. After the shaft-like parts are processed, the bottom end of the fixing bolt 5 is screwed out from the threaded hole, and the upper fixing ring 2 is rotated upward to open the outlet on one side of the central frame body 1, so that the shaft-like parts can be taken out from the central frame.

[0024] The anti-vibration center rest of this lathe, when the movable sleeve 11 is turned upward, the bottom end of the movable sleeve 11 no longer presses against the top end of the clamping cylinder 9 through the tapered groove 12, the clamping cylinder 9 separates from the sliding rod 7, and the sliding rod 7 can slide up and down inside the support sleeve 6 until the roller 8 at the bottom end of the sliding rod 7 is in contact with the shaft part. When the movable sleeve 11 is turned downward, the bottom end of the movable sleeve 11 presses against the top end of the clamping cylinder 9 through the tapered groove 12, the top end of the clamping cylinder 9 contracts inward, the clamping cylinder 9 clamps the outer wall of the sliding rod 7, thereby locking the position of the sliding rod 7, which is used to limit the position of the shaft part, reduce the vibration generated during its processing, and only requires turning the movable sleeve 11 a few times to control its lifting and lowering. This solves the problem that the traditional center rest in the prior art has three bolt support points, which has certain limitations in design and use. When disassembling and assembling workpieces, the bolts need to be unscrewed from the beginning, which takes a lot of time and has low work efficiency.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping center rest for a lathe, comprising a center rest body (1), characterized in that: The central frame body (1) is composed of an upper fixed ring (2) and a lower fixed ring (3). A hinge seat (4) is fixedly connected to the right side of the lower fixed ring (3). The top of the lower fixed ring (3) is hinged to the upper fixed ring (2) through the hinge seat (4). Multiple support sleeves (6) are distributed equidistantly in a ring between the upper fixed ring (2) and the lower fixed ring (3). A locking mechanism is provided inside the support sleeve (6). A sliding rod (7) is slidably installed in the locking mechanism. A fixing mechanism is provided on the left side of the upper fixed ring (2) and the lower fixed ring (3). The locking mechanism includes a clamp (9), a telescopic groove (10), a movable sleeve (11), and a conical groove (12). The bottom of the support sleeve (6) is fixedly connected to the clamp (9), and the top of the clamp (9) is provided with multiple telescopic grooves (10) arranged in a ring. The top of the support sleeve (6) is threadedly connected to the movable sleeve (11), and the bottom end of the movable sleeve (11) is provided with a conical groove (12) that matches the top of the support sleeve (6).

2. The anti-vibration center rest for a lathe according to claim 1, characterized in that: The bottom end of the sliding rod (7) is provided with a connecting mechanism, and a roller (8) is installed at the bottom end of the connecting mechanism. The bottom end of the sliding rod (7) is connected to the shaft part through the roller (8).

3. A vibration-damping center rest for a lathe according to claim 2, characterized in that: The connecting mechanism includes a connecting bolt (13), a connecting frame (14), a mounting hole (15), and a connecting pin (16). The bottom end of the sliding rod (7) is threaded with a connecting bolt (13), and the bottom end of the connecting bolt (13) is fixedly connected with a connecting frame (14). The roller (8) and the connecting frame (14) are provided with mounting holes (15) on both sides. A connecting pin (16) is inserted into the mounting hole (15), and one end of the connecting pin (16) is threadedly connected to the inner wall of the mounting hole (15) on one side of the connecting frame (14).

4. A vibration-damping center rest for a lathe according to claim 1, characterized in that: The clamp (9) is made of spring steel, and the sliding rod (7) passes through the interior of the movable sleeve (11), the support sleeve (6) and the clamp (9) from top to bottom.

5. A vibration-damping center rest for a lathe according to claim 1, characterized in that: The bottom end of the lower fixing ring (3) is fixedly connected to a mounting base, and the bottom of the mounting base is symmetrically provided with rectangular grooves that match the lathe slide rail.

6. A vibration-damping center rest for a lathe according to claim 1, characterized in that: The fixing mechanism includes a fixing bolt (5) and a threaded hole. The left side of the upper fixing ring (2) is threadedly connected to the fixing bolt (5), and the left side of the lower fixing ring (3) is provided with a threaded hole matching the fixing bolt (5).

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