Fan rotor clamping structure

Abstract

The utility model discloses a fan rotor clamping structure, which relates to the technical field of fan rotor processing, and comprises a tip and a clamping unit, the tip and the clamping unit are oppositely arranged, the clamping unit comprises a clamping sleeve, the clamping sleeve is provided with a taper hole, the taper hole penetrates through two opposite end surfaces of the clamping sleeve, the central axes of the taper hole, the clamping sleeve and the tip coincide with each other, and the center of the clamping sleeve is provided with a through hole. The diameter of the end, close to the tip, of the taper hole is larger than that of the end, away from the tip; the positioning seat is installed on the lathe, the positioning seat can be driven by a driving mechanism on the lathe to rotate, the positioning seat and the tip are located on the two opposite sides of the clamping sleeve, the positioning seat is fixedly connected with the clamping sleeve, the central axis of the positioning seat coincides with the central axis of the clamping sleeve, the positioning seat is provided with a through hole, and the central axis of the through hole coincides with the central axis of the taper hole; the driving part is arranged at the through hole, and the driving part comprises a telescopic rod capable of reciprocating along the central axis of the through hole. The technical problem that in the prior art, the clamping efficiency is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan rotor processing, in particular to a fan rotor clamping structure. Background Art

[0002] like Figure 1 As shown, the rotor of the Roots blower includes a rotating shaft 2 and an impeller 1 mounted on the rotating shaft 2. The diameter D dimension processing of the impeller 1 is the last step in the rotor processing. During processing, it must be ensured that the outer circle of the impeller 1 and the circular runout of each shaft seat of the rotating shaft 2 are within the tolerance range to ensure the processing accuracy of the impeller 1, thereby ensuring the processing accuracy of the rotor.

[0003] When clamping the rotor, a one-clamp-and-pushing method is usually adopted. One-clamp-and-pushing means that one end is clamped using a center 4 and the other end is clamped using a chuck 3. The reason for adopting the one-clamp-and-pushing method is that, on the one hand, this method has the characteristics of strong rigidity and large axial force. On the other hand, part of the outer circumferential surface of the pillow block at one end of the rotating shaft 2 is a conical surface 21, and the remaining circumferential surface is a cylindrical surface 22. The end with the conical surface 21 can only be tightened using the center 4.

[0004] When batch processing the rotors, in order to ensure the processing accuracy, each time after clamping is completed and the chuck 3 is used for preliminary positioning, it is necessary to measure the circular runout of each axis platform with a dial indicator, and repeatedly adjust the position of the rotor until the circular runout is adjusted to within the tolerance range. Only then can the chuck 3 be clamped and turning can be started. The operation is time-consuming and laborious, and the processing efficiency is low. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a fan rotor clamping structure to solve the technical problem of low clamping efficiency in the prior art.

[0006] To achieve the above object, the utility model provides a fan rotor clamping structure, including a top, the fan rotor clamping structure also includes a clamping unit, the top and the clamping unit are arranged opposite to each other, and the clamping unit includes:

[0007] A ferrule, wherein the ferrule is provided with a tapered hole, the tapered hole passes through two opposite end surfaces of the ferrule, the central axes of the tapered hole, the ferrule and the top coincide with each other, and the diameter of the tapered hole at one end close to the top is larger than the diameter of the tapered hole at one end away from the top;

[0008] A positioning seat, the positioning seat is installed on a lathe, the positioning seat can rotate under the drive of a driving mechanism on the lathe, the positioning seat and the top are located on opposite sides of the ferrule, the positioning seat and the ferrule are fixedly connected, the central axis of the positioning seat coincides with the central axis of the ferrule, and the positioning seat is provided with a through hole, and the through hole coincides with the central axis of the tapered hole;

[0009] A driving member is arranged at the through hole, and the driving member comprises a telescopic rod which can reciprocate along the central axis of the through hole.

[0010] Furthermore, the ferrule includes a mounting layer and an embedded layer, the mounting layer and the positioning seat are fixedly connected, the embedded layer is sleeved in the mounting layer, the central axis of the embedded layer coincides with the central axis of the mounting layer, the embedded layer and the mounting layer are relatively stationary in the circumferential direction, the embedded layer and the mounting layer are removable in the axial direction, and the inner circumferential surface of the embedded layer is the tapered hole.

[0011] Furthermore, a circular top plate is sleeved and fixed on the outer circumferential surface of the telescopic rod, and the end surface of the embedded layer away from the top end is in abutment with the top plate.

[0012] Furthermore, the embedded layer includes an annular embedded layer body, the inner circumferential surface of the embedded layer body is the tapered hole, the outer circumferential surface of the embedded layer body is tightly fitted with the inner circumferential surface of the mounting layer, and limiting strips are respectively provided at opposite radial ends of the outer circumferential surface of the embedded layer body, and the limiting strips extend along the axial direction of the embedded layer body, and limiting grooves are respectively provided at opposite radial ends of the inner circumferential surface of the mounting layer, and the limiting grooves extend along the axial direction of the mounting layer, and the limiting strips and the limiting grooves correspond to each other one by one and are plug-fitted.

[0013] Furthermore, a limiting ring is fixed to an outer sleeve at one end of the outer peripheral surface of the inner embedded layer body close to the top, and the end surface of the mounting layer close to the top is limitedly matched with the limiting ring.

[0014] Furthermore, the driving member includes a driving member body and the telescopic rod, a protective tube is provided on the side of the positioning seat away from the top, the central axis of the protective tube coincides with the central axis of the positioning seat, one end of the protective tube is fixedly connected to the positioning seat, and the other end of the protective tube is closed, the driving member body is installed in the protective tube, and the driving member body is connected to a joint, and the joint passes through the side wall of the protective tube.

[0015] Furthermore, the taper ratio of the tapered hole is 1:20.

[0016] Furthermore, a mounting ring is fixed to an outer sleeve at one end of the outer peripheral surface of the mounting layer away from the top, and the mounting ring is detachably connected to the positioning seat.

[0017] The beneficial effects of the utility model are:

[0018] When clamping the fan rotor, first install the ferrule on the positioning seat of the machine tool. The positioning seat drives the ferrule to rotate. During the rotation of the ferrule, measure the circular runout of the ferrule. After the circular runout of the ferrule is adjusted to the tolerance range, tighten the ferrule on the positioning seat, insert the conical end of the shaft into the conical hole, and tighten the other end with a center until the conical surface of the shaft just completely enters the conical hole. At this time, the conical surface of the shaft is completely in contact with the conical hole. Under the action of the conical hole, the center and the cylindrical surface of the shaft, the rotor to be processed is clamped. Since the circular runout of the ferrule is adjusted in advance, the circular runout of the center shaft table of the rotor to be processed must be within the tolerance range at this time, and no further adjustment is required. When clamping the next rotor, keep the ferrule stationary and clamp it in the above manner, which saves the time of multiple position adjustments for clamping each rotor to be processed, saves time and effort, and has a high clamping efficiency. When the rotor needs to be disassembled after processing, it can be ejected from the tapered hole through the telescopic rod of the drive part, which is quick and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A diagram showing the coordination between the fan rotor clamping structure and the fan rotor in the prior art;

[0021] Figure 2 This is a diagram showing the coordination between a fan rotor clamping structure and a fan rotor according to the utility model;

[0022] Figure 3 This is a structural diagram of a clamping unit in a fan rotor clamping structure of the utility model;

[0023] Figure 4 for relative to Figure 3 Partial structural diagram of

[0024] Figure 5 This is a structural diagram of an embedded layer in a fan rotor clamping structure of the utility model;

[0025] Figure 6 The utility model is a structural diagram of a driving component in a fan rotor clamping structure.

[0026] In the figure, 1, impeller; 2, rotating shaft; 21, conical surface; 22, cylindrical surface; 3, chuck; 4, top; 5, clamping unit; 51, ferrule; 511, mounting layer; 5111, limiting groove; 512, embedded layer; 5121, embedded layer body; 5122, limiting ring; 5123, limiting strip; 5124, conical hole; 51241, horizontal part; 51242, conical part; 52, positioning seat; 521, through hole; 53, driving member; 531, telescopic rod; 532, top plate; 533, driving member body; 534, joint; 54, protective tube. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 6 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0028] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] The utility model provides a fan rotor clamping structure, including a top 4, and the fan rotor clamping structure also includes a clamping unit 5. The top 4 and the clamping unit 5 are arranged relatively, and the clamping unit 5 includes: a ferrule 51, the ferrule 51 is provided with a tapered hole 5124, the tapered hole 5124 passes through the opposite two end surfaces of the ferrule 51, the central axes of the tapered hole 5124, the ferrule 51 and the top 4 coincide with each other, and the diameter of the tapered hole 5124 close to the top 4 is greater than the diameter of the tapered hole 5124 away from the top 4; a positioning seat 52, a positioning seat 53, a positioning seat 54, a positioning seat 55, a positioning seat 56, a positioning seat 57, a positioning seat 58, a positioning seat 59, a positioning seat 510, a positioning seat 511, a positioning seat 512 The positioning seat 52 is installed on the lathe, and the positioning seat 52 can rotate under the drive of the driving mechanism on the lathe. The positioning seat 52 and the top 4 are located on the opposite sides of the ferrule 51, and the positioning seat 52 and the ferrule 51 are fixedly connected. The central axis of the positioning seat 52 coincides with the central axis of the ferrule 51, and the positioning seat 52 is provided with a through hole 521, and the through hole 521 coincides with the central axis of the tapered hole 5124; the driving member 53, the driving member 53 is arranged at the through hole 521, and the driving member 53 includes a telescopic rod 531 which can reciprocate along the central axis of the through hole 521.

[0033] When clamping the fan rotor, first install the ferrule 51 on the positioning seat 52 of the machine tool. The positioning seat 52 drives the ferrule 51 to rotate. During the rotation of the ferrule 51, measure the circular runout of the ferrule 51. After the circular runout of the ferrule 51 is adjusted to within the tolerance range, fasten the ferrule 51 to the positioning seat 52, insert the conical end of the shaft 2 into the conical hole 5124, and tighten the other end with the top 4 until the conical surface 21 of the shaft 2 just completely enters the conical hole 5124. At this time, the conical surface 21 of the shaft 2 is completely in contact with the conical hole 5124. The rotor to be processed is clamped under the action of the cylindrical surface 22. Since the circular runout of the clamping sleeve 51 is adjusted in advance, the circular runout of the central axis table of the rotor to be processed must be within the tolerance range at this time, and no further adjustment is required. When clamping the next rotor, the clamping sleeve 51 is kept stationary and clamping is performed in the above manner, which saves the time of multiple position adjustments required for clamping each rotor to be processed, saves time and effort, and has a high clamping efficiency. When the rotor needs to be disassembled after being processed, it can be ejected from the tapered hole 5124 through the telescopic rod 531 of the driving member 53, which is quick and efficient.

[0034] It should be noted that the tapered hole 5124 includes a tapered portion 51242 and a horizontal portion 51241. The length of the tapered portion 51242 is the same as the length of the tapered surface 21. The taper ratio of the tapered portion 51242 is the same as the taper ratio of the tapered surface 21, and the taper ratio is 1:20. Under the action of the horizontal portion 51241, the tapered hole 5124, the top 4 and the cylindrical surface 22, when the shaft 2 is clamped, the tapered surface 21 of the shaft 2 will automatically align, that is, the center axis of the tapered surface 21 will automatically coincide with the center axis of the tapered hole 5124.

[0035] After long-term use, the tapered hole 5124 is bound to be worn, and the wear is bound to affect the subsequent clamping accuracy. In order to reduce the influence of the wear of the tapered hole 5124 on the clamping accuracy, as a preferred embodiment, the further improvement of the utility model is that the ferrule 51 includes a mounting layer 511 and an embedded layer 512, the mounting layer 511 and the positioning seat 52 are fixedly connected, the embedded layer 512 is sleeved in the mounting layer 511, the central axis of the embedded layer 512 and the mounting layer 511 coincide, the embedded layer 512 and the mounting layer 511 are relatively stationary in the circumferential direction, the embedded layer 512 and the mounting layer 511 are detachable in the axial direction, and the inner circumferential surface of the embedded layer 512 is the tapered hole 5124.

[0036] When the tapered hole 5124 is worn to a certain extent, the embedded layer 512 can be directly disassembled and replaced. Regular replacement of the embedded layer 512 will inevitably reduce the influence of the wear of the tapered hole 5124 on the clamping accuracy.

[0037] It should be noted that, on the one hand, the regularly replaced embedded layer 512 must ensure sufficient processing accuracy, and on the other hand, the embedded layer 512 can be made of a material that is easy to cut and has a low cost, thereby facilitating the processing of the embedded layer 512.

[0038] It is understandable that it is laborious to disassemble the inner layer 512 manually. In order to disassemble the inner layer 512 more easily, as a preferred embodiment, the further improvement of the utility model is that a circular top plate 532 is fixedly mounted on the outer circumference of the telescopic rod 531, and the end surface of the inner layer 512 away from the top 4 is in contact with the top plate 532. When the inner layer 512 needs to be disassembled, the telescopic rod 531 of the driving member 53 is further moved, and the inner layer 512 is more easily disassembled through the drive of the top plate 532.

[0039] It should be noted that the driving member 53 of the present application is a cylinder. For ordinary cylinders, they usually have only two terminal positions: fully extended and fully retracted. In the present application, the telescopic rod 531 of the cylinder needs to stop at a specific position. It is required that at this specific position, the telescopic rod 531 can push out the rotating shaft 2, but the top plate 532 does not contact the embedded layer 512. The prior art can achieve this specific position through different technical means. For example, a magnetic switch can be installed at different positions of the cylinder. When the piston of the cylinder has a permanent magnet, the magnetic switch can detect the position of the piston and send a signal to the control system. After receiving the signal, the control system can control the solenoid valve to close the air source, so that the telescopic rod 531 stops at the specific position.

[0040] As to how to ensure that the embedded layer 512 and the mounting layer 511 are relatively stationary in the circumferential direction and removable in the axial direction, as a preferred embodiment, the further improvement of the utility model lies in that the embedded layer 512 comprises an annular embedded layer body 5121, the inner circumferential surface of the embedded layer body 5121 is a tapered hole 5124, the outer circumferential surface of the embedded layer body 5121 is tightly fitted with the inner circumferential surface of the mounting layer 511, and limiting strips 5123 are respectively provided at opposite radial ends of the outer circumferential surface of the embedded layer body 5121, and the limiting strips 5123 extend in the axial direction of the embedded layer body 5121, and limiting grooves 5111 are respectively provided at opposite radial ends of the inner circumferential surface of the mounting layer 511, and the limiting grooves 5111 extend in the axial direction of the mounting layer 511, and the limiting strips 5123 and the limiting grooves 5111 correspond to each other one by one and are plug-fitted together.

[0041] It should be noted that there is no restriction on the shapes of the limiting strip 5123 and the limiting groove 5111 , but the fit between the limiting strip 5123 and the limiting groove 5111 and the sufficient matching length between the limiting strip 5123 and the limiting groove 5111 must be ensured.

[0042] In order to axially limit the embedded layer 512, as a preferred embodiment, the further improvement of the utility model is that a limiting ring 5122 is fixed to the outer sleeve of one end of the outer peripheral surface of the embedded layer body 5121 close to the top 4, and the end surface of the mounting layer 511 close to the top 4 is limitedly matched with the limiting ring 5122. The setting of the limiting ring 5122 provides a reference for the installation of the embedded layer 512. When the limiting ring 5122 fits the end surface of the mounting layer 511, it proves that the embedded layer 512 is installed in place. The setting of the limiting ring 5122 can also prevent the embedded layer 512 from moving away from the top 4 under the action of the rotating shaft 2.

[0043] It can be understood that the positioning seat 52 is driven by the driving shaft of the lathe. As for how to install the driving member 53, as a preferred embodiment, the further improvement of the utility model lies in that the driving member 53 includes a driving member body 533 and a telescopic rod 531, and a protective tube 54 is provided on the side of the positioning seat 52 away from the top 4, and the central axis of the protective tube 54 coincides with the central axis of the positioning seat 52, one end of the protective tube 54 is fixedly connected to the positioning seat 52, and the other end of the protective tube 54 is closed, the driving member body 533 is installed in the protective tube 54, and the driving member body 533 is connected to a joint 534, and the joint 534 passes through the side wall of the protective tube 54.

[0044] It should be noted that when the clamping unit 5 rotates, the air source of the driving member 53 needs to be separated from the joint 534 , and when the driving member 35 is working, the air source is reconnected at the joint 534 .

[0045] The provision of the protective tube 54 can not only protect the driving member 53, but also facilitate the connection between the driving shaft of the lathe and the positioning seat 52. In actual application, the driving shaft of the machine tool and the protective tube 54 are driven and connected, and the driving shaft of the machine tool can drive the positioning seat 52 to rotate through the protective tube 54.

[0046] In order to facilitate the connection between the mounting layer 511 and the positioning seat 52, as a preferred embodiment, the further improvement of the utility model is that a mounting ring is fixed to the outer sleeve at one end of the outer peripheral surface of the mounting layer 511 away from the top 4, and the mounting ring and the positioning seat 52 are detachably connected by bolts.

[0047] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A fan rotor clamping structure, comprising a top, characterized in that: The fan rotor clamping structure further includes a clamping unit, the top and the clamping unit are arranged opposite to each other, and the clamping unit includes: A ferrule, wherein the ferrule is provided with a tapered hole, the tapered hole passes through two opposite end surfaces of the ferrule, the central axes of the tapered hole, the ferrule and the top coincide with each other, and the diameter of the tapered hole at one end close to the top is larger than the diameter of the tapered hole at one end away from the top; A positioning seat, the positioning seat is installed on a lathe, the positioning seat can rotate under the drive of a driving mechanism on the lathe, the positioning seat and the top are located on opposite sides of the ferrule, the positioning seat and the ferrule are fixedly connected, the central axis of the positioning seat coincides with the central axis of the ferrule, and the positioning seat is provided with a through hole, and the through hole coincides with the central axis of the tapered hole; A driving member is arranged at the through hole, and the driving member comprises a telescopic rod which can reciprocate along the central axis of the through hole.

2. The fan rotor clamping structure according to claim 1, characterized in that: The ferrule includes a mounting layer and an embedded layer, the mounting layer and the positioning seat are fixedly connected, the embedded layer is sleeved in the mounting layer, the central axis of the embedded layer coincides with the central axis of the mounting layer, the embedded layer and the mounting layer are relatively stationary in the circumferential direction, the embedded layer and the mounting layer are detachable in the axial direction, and the inner circumferential surface of the embedded layer is the tapered hole.

3. The fan rotor clamping structure according to claim 2, characterized in that: A circular top plate is sleeved and fixed on the outer circumferential surface of the telescopic rod, and the end surface of the embedded layer away from the top end is in abutment with the top plate.

4. The fan rotor clamping structure according to claim 2, characterized in that: The embedded layer includes an annular embedded layer body, the inner circumference of the embedded layer body is the tapered hole, the outer circumference of the embedded layer body is tightly fitted with the inner circumference of the mounting layer, and limiting strips are respectively provided at opposite radial ends of the outer circumference of the embedded layer body, and the limiting strips extend along the axial direction of the embedded layer body, and limiting grooves are respectively provided at opposite radial ends of the inner circumference of the mounting layer, and the limiting grooves extend along the axial direction of the mounting layer, and the limiting strips and the limiting grooves correspond to each other one by one and are plug-fitted.

5. The fan rotor clamping structure according to claim 4, characterized in that: A limiting ring is fixed to an outer sleeve of one end of the outer peripheral surface of the inner embedded layer body close to the top, and the end surface of the installation layer close to the top is limitedly matched with the limiting ring.

6. The fan rotor clamping structure according to claim 1, characterized in that: The driving member includes a driving member body and the telescopic rod. A protective tube is provided on the side of the positioning seat away from the top. The central axis of the protective tube coincides with the central axis of the positioning seat. One end of the protective tube is fixedly connected to the positioning seat, and the other end of the protective tube is closed. The driving member body is installed in the protective tube. The driving member body is connected to a joint, and the joint passes through the side wall of the protective tube.

7. The fan rotor clamping structure according to claim 1, characterized in that: The taper ratio of the tapered hole is 1:

20.

8. The fan rotor clamping structure according to claim 2, characterized in that: A mounting ring is fixed to an outer sleeve at one end of the outer circumferential surface of the mounting layer away from the top, and the mounting ring is detachably connected to the positioning seat.

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