Mandrel with high stability

Abstract

The utility model relates to the technical field of mandrels, and discloses a high-stability mandrel, the inner side of a lower shell is fixedly provided with a damping fixing strip, the top surface of the damping fixing strip is provided with a mandrel, the top surface of the lower shell is fixedly provided with a cushioning device, the cushioning device comprises a first fixing block, and the first fixing block is provided with a second fixing block. A fixing rod is fixedly installed on the side face of the first fixing block, a second fixing block is fixedly installed on the side, away from the first fixing block, of the fixing rod, and the outer side of the fixing rod is sleeved with a movable base. According to the high-stability mandrel, firstly, when the mandrel receives pressure, the upper shell bears downward pressure and starts to move downwards, the cushioning device connected with the upper shell bears pressure from the upper shell, and at the moment, the first movable rod and the second movable rod start to stretch out and draw back; as the center of the first movable rod and the center of the second movable rod are connected through the fixing bolt, the two ends of the first movable rod and the two ends of the second movable rod start to move.

Description

Technical Field

[0001] This utility model relates to the field of mandrel technology, specifically a mandrel with high stability. Background Technology

[0002] Mandrels are mechanical parts with wide applications in various mechanical equipment and processes. In large ring mills, mandrels are a crucial component, but they are prone to continuous breakage. The feeding and winding devices utilize air-expansion mandrel clamping devices. Involute spline mandrels possess ideal load-bearing capacity and are easy to assemble and disassemble. Cup feeding devices automatically feed cups to the cup sleeve mandrel. Spindle test bars, also known as spindle inspection bars, mandrels, or spindle testing mandrels, can be used with various machine tool manufacturers to correctly install spindles and ensure spindle accuracy.

[0003] The existing mandrel has poor cushioning effect, which can easily lead to increased collision between the torsion bar and the rubber mandrel during use, resulting in easy wear. If it is not replaced for a long time, there is a risk that the torsion bar and the rubber mandrel will not work, so the risk factor is high. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a mandrel with high stability to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a highly stable mandrel, wherein a shock-absorbing fixing strip is fixedly installed on the inner side of the lower outer shell, a mandrel is provided on the top surface of the shock-absorbing fixing strip, a damping device is fixedly installed on the top surface of the lower outer shell, the damping device includes a fixing block one, a fixing rod is fixedly installed on the side of the fixing block one, a fixing block two is fixedly installed on the side of the fixing rod away from the fixing block one, a movable base is sleeved on the outer side of the fixing rod, a spring is fixedly installed on the side of the movable base away from the fixing block two, a movable rod one is fixedly installed on the top surface of the movable base, and a movable rod two is fixedly installed on the side of the movable rod one by fixing bolts.

[0008] Preferably, the upper outer shell is fixedly installed on the side of the shock-absorbing device away from the lower outer shell.

[0009] Preferably, both ends of the movable rod one and the movable rod two are fixedly installed with movable bases.

[0010] Preferably, eight shock-absorbing devices are provided.

[0011] Preferably, each damping device is provided with four springs.

[0012] Preferably, the material of the shock-absorbing fixing strip is rubber.

[0013] Compared with the prior art, the present invention provides a mandrel with high stability and has the following beneficial effects:

[0014] 1. This highly stable mandrel, firstly, when the mandrel receives pressure, the upper outer shell will be subjected to downward pressure and begin to move downward. The damping device connected to the upper outer shell will be subjected to pressure from the upper outer shell. At this time, movable rod one and movable rod two will begin to extend and retract. Since the centers of movable rod one and movable rod two are connected by fixing bolts, the two ends of movable rod one and movable rod two will begin to move. At this time, movable rod one and movable rod two will drive the movable bases at both ends to move, so that the springs on the side of the movable bases are squeezed by the movable bases. At the same time, the springs will generate a reaction force due to their own extension and retraction to counteract the force received, thereby reducing the amplitude of vibration and maintaining the stability of the mandrel;

[0015] 2. This highly stable mandrel features shock-absorbing and fixing strips on its sides, which help stabilize and secure the mandrel. The shock-absorbing and fixing strips are made of rubber, a soft material that not only alleviates vibrations but also maintains the stability of the object. The upper and lower outer shells enclose the mandrel and provide protection, effectively relieving and dispersing local pressure during vibrations to prevent damage to the mandrel. Multiple shock-absorbing devices are included to better mitigate larger vibrations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the shock absorption device of this utility model;

[0018] In the diagram: 1. Lower outer shell; 2. Spindle; 3. Shock-absorbing fixing strip; 4. Vibration damping device; 401. Fixing block one; 402. Fixing rod; 403. Fixing block two; 404. Movable base; 405. Movable rod one; 406. Movable rod two; 407. Fixing bolt; 408. Spring; 5. Upper outer shell; Detailed Implementation

[0019] 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.

[0020] like Figure 1-2As shown, this utility model provides a technical solution: a highly stable mandrel, with a shock-absorbing fixing strip 3 fixedly installed on the inner side of the lower outer shell 1, a mandrel 2 provided on the top surface of the shock-absorbing fixing strip 3, and a shock-absorbing device 4 fixedly installed on the top surface of the lower outer shell 1. The shock-absorbing device 4 includes a fixing block 401, a fixing rod 402 fixedly installed on the side of the fixing block 401, a fixing block 403 fixedly installed on the side of the fixing rod 402 away from the fixing block 401, a movable base 404 sleeved on the outer side of the fixing rod 402, a spring 408 fixedly installed on the side of the movable base 404 away from the fixing block 403, a movable rod 405 fixedly installed on the top surface of the movable base 404, and a movable rod 406 fixedly installed on the side of the movable rod 405 by fixing bolts 407.

[0021] Furthermore, the upper outer shell 5 is fixedly installed on the side of the shock-absorbing device 4 away from the lower outer shell 1.

[0022] Through the above technical solution, the upper outer shell 5 and the lower outer shell 1 will wrap around the spindle 2 and play a protective role, thereby relieving and dispersing local pressure and preventing the spindle 2 from being damaged.

[0023] Furthermore, movable bases 404 are fixedly installed at both ends of movable rod 1 405 and movable rod 2 406.

[0024] With the above technical solution, when the shock absorption device 4 receives pressure, the first movable rod 405 and the second movable rod 406 will extend and retract around the fixing bolt 407, and the displacement caused by the vibration will be relieved by the springs 408 on the sides of the movable base 404 at both ends.

[0025] Furthermore, eight shock-absorbing devices 4 are provided.

[0026] The above technical solutions can better mitigate large-amplitude vibrations.

[0027] Furthermore, each damping device 4 is equipped with four springs 408.

[0028] Through the above technical solution, spring 408 is the main device for mitigating the force generated by vibration.

[0029] Furthermore, the shock-absorbing fixing strip 3 is made of rubber.

[0030] Through the above technical solutions, rubber, a material with soft properties, can not only absorb vibrations but also maintain the stability of objects.

[0031] Working principle: When the spindle 2 receives pressure, the upper outer shell 5 will be subjected to downward pressure and begin to move downward. The damping device 4 connected to the upper outer shell 5 will be subjected to pressure from the upper outer shell 5. At this time, the movable rod 1 405 and the movable rod 2 406 will begin to extend and retract. Since the centers of the movable rod 1 405 and the movable rod 2 406 are connected by the fixing bolt 407, the two ends of the movable rod 1 405 and the movable rod 2 406 will begin to move. At this time, the movable rod 1 405 and the movable rod 2 406 will drive the movable base 404 at both ends to move, so that the spring 408 on the side of the movable base 404 is squeezed by the movable base 404. At the same time, the spring 408 will generate a reaction force due to its own extension and retraction to counteract the force, thereby reducing the amplitude of vibration and maintaining the stability of the spindle 2. Meanwhile, the side of the spindle 2 is provided with shock-absorbing fixing strips 3, which can help stabilize and fix the spindle 2.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly stable mandrel, comprising a lower housing (1), characterized in that: A shock-absorbing fixing strip (3) is fixedly installed on the inner side of the lower outer shell (1). A spindle (2) is provided on the top surface of the shock-absorbing fixing strip (3). A damping device (4) is fixedly installed on the top surface of the lower outer shell (1). The damping device (4) includes a fixing block one (401). A fixing rod (402) is fixedly installed on the side of the fixing block one (401). A fixing block two (403) is fixedly installed on the side of the fixing rod (402) away from the fixing block one (401). A movable base (404) is sleeved on the outer side of the fixing rod (402). A spring (408) is fixedly installed on the side of the movable base (404) away from the fixing block two (403). A movable rod one (405) is fixedly installed on the top surface of the movable base (404). A movable rod two (406) is fixedly installed on the side of the movable rod one (405) by a fixing bolt (407).

2. The highly stable mandrel according to claim 1, characterized in that: The upper outer shell (5) is fixedly installed on the side of the shock-absorbing device (4) away from the lower outer shell (1).

3. The high-stability mandrel according to claim 1, characterized in that: Both ends of the movable rod one (405) and movable rod two (406) are fixedly installed with movable bases (404).

4. A highly stable mandrel according to claim 1, characterized in that: The shock-absorbing device (4) is provided in eight parts.

5. A highly stable mandrel according to claim 1, characterized in that: Each damping device (4) is provided with four springs (408).

6. A highly stable mandrel according to claim 1, characterized in that: The material of the shock-absorbing fixing strip (3) is rubber.

Images