Tool for guaranteeing dynamic balance measurement of impeller
By designing a tooling including mandrel, spring, cone sleeve and locking screw, the problems of poor measurement consistency and long clamping time in the existing impeller dynamic balance measurement methods are solved, and more efficient measurement and simpler clamping operations are achieved.
Patent Information
- Application Number
- CN202421415988.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing impeller dynamic balance measurement methods have poor measurement consistency due to gaps, low measurement efficiency, and long clamping time.
A tooling including a mandrel, a spring, a cone sleeve, a locking screw and an impeller is designed. The mandrel is detached and connected to the rotating spindle of the dynamic balancer through the mandrel, and the gap is eliminated by the cooperation between the cone sleeve and the impeller, and the impeller is easily removed by the cooperation between the locking screw and the spring.
It achieves better consistency in the measurement of impeller, higher measurement efficiency, shortens the clamping time of workpieces, and reduces production costs.
Smart Images
Figure CN222635685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of impeller processing, in particular to a tooling for ensuring the dynamic balance measurement of an impeller. Background Art
[0002] The dynamic balancing machine is mainly used to measure the imbalance, and can obtain the size and position of the imbalance. The existing method of measuring the dynamic balance of impellers is to use a core shaft to match the clearance between the impeller hub. Because of the clearance, the impeller rotation axis and the dynamic balancing machine rotation axis are not coaxial, which causes the same impeller to be measured several times, and the size and position of the imbalance will be different, with poor consistency, resulting in low measurement efficiency. In addition, after measurement, the nut must be completely loosened before the impeller can be removed, and clamping takes a long time. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a tooling for ensuring the dynamic balance measurement of the impeller, ensure the consistency of product measurement, reduce the technical level requirements of the measurement operator, shorten the debugging time for changing product models and the time for clamping workpieces, improve processing efficiency, and reduce production costs.
[0004] The purpose of the utility model is achieved through the following technical solutions: this tooling for ensuring the dynamic balance measurement of the impeller includes a core shaft, a spring, a tapered sleeve, a locking screw and an impeller. The lower end of the core shaft is detachably connected to the rotating main shaft of the dynamic balancing machine to realize transmission. The upper end of the core shaft is provided with a core shaft expansion sleeve for extending into the inner hole of the impeller; the spring is placed in the core shaft expansion sleeve, and the tapered sleeve is supported on the spring after matching with the conical surface of the core shaft expansion sleeve. The locking screw is used to penetrate the tapered sleeve and the spring in sequence and lock the impeller and the core shaft.
[0005] As a further technical solution, an external stop is provided at the lower end of the core shaft for inserting into the rotating shaft hole of the rotating main shaft for positioning.
[0006] As a further technical solution, a flange is provided on the outer wall of the core shaft near the outer stop, a plurality of fixing screw holes are provided on the flange, and the flange is fixed to the rotating main shaft by fixing screws.
[0007] As a further technical solution, an outer step is provided on the outer wall of the upper end of the core shaft, and when the core shaft expansion sleeve extends into the inner hole, the hub end face of the impeller is positioned on the outer step.
[0008] As a further technical solution, an inner step is provided in the core shaft expansion sleeve, so that the lower end of the spring abuts against the inner step and the upper end of the spring abuts against the cone sleeve.
[0009] As a further technical solution, a blind hole is provided at the center of the mandrel, and the upper opening of the blind hole is connected to the mandrel expansion sleeve, and the locking screw passes through the tapered sleeve and the spring and is threadedly connected to the blind hole.
[0010] As a further technical solution, the core shaft has various specifications for matching impellers of different models.
[0011] The beneficial effects of the utility model are:
[0012] 1. The core shaft (core shaft expansion sleeve) uses a tapered sleeve to match the impeller, eliminating the matching gap. During measurement, ensure that the impeller rotation axis and the dynamic balancing machine rotation axis are coaxial, which improves the measurement consistency and efficiency.
[0013] 2. After the measurement, loosen the locking screw, the spring will lift the cone sleeve, causing the mandrel expansion sleeve to shrink, so that the impeller can be easily removed without completely unscrewing the locking screw. The clamping time is shorter and the operation is easier.
[0014] 3. The mandrel has various specifications and can match different types of impellers, making the tooling more versatile. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle.
[0017] Figure 3 It is a structural schematic diagram of the core shaft of the utility model.
[0018] Figure 4 It is a structural schematic diagram of the impeller in the utility model.
[0019] Explanation of the accompanying drawings: core shaft 1, external stop 11, external step 12, core shaft expansion sleeve 13, internal step 131, blind hole 132, flange 14, fixing screw hole 141, spring 2, tapered sleeve 3, locking screw 4, impeller 5, inner hole 51, hub end face 52, rotating main shaft 6, rotating shaft hole 61, fixing screw 7. DETAILED DESCRIPTION
[0020] The utility model will be described in detail below with reference to the accompanying drawings:
[0021] Example: As attached Figures 1 to 4 As shown, the tooling for ensuring the dynamic balance measurement of the impeller includes a core shaft 1, an external stop 11, an external step 12, a core shaft expansion sleeve 13, an internal step 131, a blind hole 132, a flange 14, a fixing screw hole 141, a spring 2, a tapered sleeve 3, a locking screw 4, an impeller 5, an inner hole 51, a hub end face 52, a rotating main shaft 6, a rotating shaft hole 61 and a fixing screw 7.
[0022] Reference Figure 1The lower end of the core shaft 1 is provided with an outer stop 11, which can be inserted into the rotating shaft hole 61 of the rotating main shaft 6 for positioning. A flange 14 is provided on the outer wall of the core shaft 1 near the outer stop 11, such as Figure 3 As shown, a plurality of fixing screw holes 141 are provided on the flange 14 , so that the core shaft 1 (flange 14 ) is fixedly connected to the rotating main shaft 6 through the fixing screws 7 , and the rotating main shaft 6 drives the core shaft 1 to rotate.
[0023] like Figure 2 , 3 As shown, a core shaft expansion sleeve 13 is integrally provided at the upper end of the core shaft 1, and the core shaft expansion sleeve 13 can extend into the inner hole 51 of the impeller 5. Further, an outer step 12 is provided on the outer wall of the upper end of the core shaft 1. When the core shaft expansion sleeve 13 extends into the inner hole 51, the hub end face 52 of the impeller 5 is positioned on the outer step 12 (as shown in FIG. Figure 1 , 4 As shown). The spring 2 is installed in the mandrel expansion sleeve 13. When the cone sleeve 3 is matched with the cone surface of the mandrel expansion sleeve 13, its lower end surface is supported on the spring 2. Preferably, an inner step 131 is provided in the mandrel expansion sleeve 13, so that the lower end of the spring 2 is against the inner step 131, and the upper end of the spring 2 is against the lower end surface of the cone sleeve 3. A blind hole 132 is provided in the center of the mandrel 1, and the upper end of the blind hole 132 is connected to the mandrel expansion sleeve 13. The locking screw 4 presses the upper end surface of the cone sleeve 3, and the locking screw 4 passes through the cone sleeve 3 and the spring 2 in sequence and is threadedly connected with the blind hole 132, thereby locking the impeller 5 and the mandrel 1.
[0024] Preferably, the core shaft 1 has various specifications. Later, for different types of impellers 5, it is only necessary to replace different core shafts 1 and then machine them after clamping, so the versatility of the tooling is better.
[0025] The working process of this utility model:
[0026] a. Install the mandrel 1 into the rotating shaft hole 61 of the dynamic balancing machine through the outer stop 11, fix the rotating spindle 6 and the fixing screw hole 141 on the flange 14 with the fixing screw 7, and measure the unbalance of the mandrel 1;
[0027] b. First put the spring 2 into the mandrel expansion sleeve 13 (supported on the inner step 131), then put the cone sleeve 3 into the mandrel expansion sleeve 13, so that the lower end surface of the cone sleeve 3 is against the spring 2, and then use the locking screw 4 to pass through the cone sleeve 3 and the spring 2 in sequence and initially fix them, so that the mandrel expansion sleeve 13 remains in a relaxed state;
[0028] c. Then install the impeller 5 into the mandrel 1, and the hub end face 52 of the impeller 5 fits the surface of the outer step 12 of the mandrel 1, and then tighten the locking screw 4 to ensure that the mandrel expansion sleeve 13 is fully expanded, fix (expand) the impeller 5, and start measuring;
[0029] d. After the measurement is completed, loosen the locking screw 4 first. At this time, the spring 2 will lift the cone sleeve 3 (spring action), causing the core shaft expansion sleeve 13 to shrink, and the impeller 5 can be easily removed without completely unscrewing the locking screw 4 to complete a round of measurement.
[0030] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A tool for ensuring the dynamic balance measurement of an impeller, characterized in that: The invention comprises a core shaft (1), a spring (2), a taper sleeve (3), a locking screw (4) and an impeller (5); the lower end of the core shaft (1) is detachably connected to a rotating main shaft (6) of a dynamic balancing machine to realize transmission; a core shaft expansion sleeve (13) is arranged at the upper end of the core shaft (1) for extending into an inner hole (51) of the impeller (5); the spring (2) is inserted into the core shaft expansion sleeve (13); the taper sleeve (3) is supported on the spring (2) after the taper surface of the core shaft expansion sleeve (13) is matched; the locking screw (4) is used to penetrate the taper sleeve (3) and the spring (2) in sequence and lock the impeller (5) and the core shaft (1).
2. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 1 is characterized in that: The lower end of the core shaft (1) is provided with an external stop (11) for inserting into the rotating shaft hole (61) of the rotating main shaft (6) for positioning.
3. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 2 is characterized in that: A flange (14) is arranged on the outer wall of the core shaft (1) near the outer stop (11), a plurality of fixing screw holes (141) are provided on the flange (14), and the flange (14) is fixed to the rotating main shaft (6) by fixing screws (7).
4. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 1 is characterized in that: An outer step (12) is arranged on the outer wall of the upper end of the core shaft (1). When the core shaft expansion sleeve (13) extends into the inner hole (51), the hub end face (52) of the impeller (5) is positioned on the outer step (12).
5. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 1 is characterized in that: An inner step (131) is arranged in the core shaft expansion sleeve (13), so that the lower end of the spring (2) abuts against the inner step (131), and the upper end of the spring (2) abuts against the cone sleeve (3).
6. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 1 is characterized in that: A blind hole (132) is provided at the center of the mandrel (1), and the upper end of the blind hole (132) is communicated with the mandrel expansion sleeve (13). The locking screw (4) passes through the cone sleeve (3) and the spring (2) and is threadedly connected with the blind hole (132).
7. The tooling for ensuring the dynamic balance measurement of an impeller according to claim 1 is characterized in that: The core shaft (1) has various specifications and is used to match impellers (5) of different models.