Special clamp suitable for taper hole wheel static balance detection

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a special clamp suitable for taper hole wheel static balance detection, which comprises a disc body, sliding seats and clamping jaws, the disc body is used for connecting a balancing machine main shaft, a plurality of sliding seats which are axially and uniformly distributed are arranged in a guide groove on the end face of the disc body in a sliding manner along the radial direction, each sliding seat is provided with one clamping jaw, and the clamping jaws are arranged on the disc body. The wheel chuck is characterized in that claw heads are integrally arranged at the ends, close to the center of the chuck body, of the clamping claws, and the outer side faces of the claw heads are positioning conical faces matched with a conical hole in the middle of a wheel. According to the utility model, the positioning conical surface on the claw head is completely attached to the conical hole in the middle of the wheel, so that stable and effective central positioning is formed for the wheel, and the situation that the clamped wheel cannot simulate the center line of a wheel hole in the static balance test process due to unstable positioning of the wheel and generates a larger measurement error is avoided; and a good use effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, and in particular relates to a special clamp suitable for static balance detection of a tapered hole wheel. Background Art

[0002] At present, the clamping surface of the jaws of the rotary balancing machine is a straight surface (i.e., an arc surface), which cannot completely fit with the inner wall of the tapered hole in the middle of the wheel to form a stable and effective center positioning for the wheel. Moreover, after the jaws with a straight clamping surface clamp the wheel by cooperating with the tapered hole on the wheel, the center positioning of the wheel is unstable, resulting in the wheel being unable to simulate the center line of the wheel hole after clamping, thereby causing measurement deviation.

[0003] In addition, the contact position between the straight-face claw and the wheel hole is at the top of the claw. When the wheel is driven by the claw to rotate at high speed, it may detach from the claw due to factors such as radial runout of the wheel, which poses a great safety hazard.

[0004] The utility model designs a special fixture suitable for static balance detection of tapered hole wheels to solve the above problems. Utility Model Content

[0005] In order to solve the defects in the prior art, the utility model discloses a special fixture suitable for static balance detection of tapered hole wheels, which is realized by adopting the following technical solutions.

[0006] A special fixture suitable for static balancing detection of tapered hole wheels comprises a disc body, a slide seat and a clamping claw. The disc body is used to connect the main shaft of a balancing machine. A plurality of slide seats evenly distributed in the axial direction are radially slidably installed in guide grooves on the end surface of the disc body. A clamping claw is installed on each slide seat. A claw head is integrally provided at one end of the claw close to the center of the disc body. The outer side surface of the claw head is a positioning cone surface matching the tapered hole in the middle of the wheel.

[0007] Furthermore, the bottom of the clamping claw has a cross key B and keyway B, the key B and keyway B correspond to the keyway A and key A on the corresponding slide seat one by one, and the clamping claw is fixedly connected to the corresponding slide seat by a countersunk bolt.

[0008] Furthermore, the surfaces of the claw and the claw head have a rust-proof oxidation layer formed by blackening treatment.

[0009] The beneficial effects of the utility model are as follows:

[0010] The utility model can form a complete fit between the positioning cone surface on the claw head and the cone hole in the middle of the wheel, thereby forming a stable and effective center positioning for the wheel, avoiding the situation where the wheel after clamping cannot simulate the center line of the wheel hole during the static balance test due to unstable positioning and causes a large measurement error, and has a good use effect.

[0011] The positioning conical surface on the clamping claw of the utility model will form axial traction on the wheel after it is completely fitted with the inner wall of the wheel cone hole, thereby preventing the wheel from being separated from the clamping claw due to radial runout and other factors during high-speed rotation, eliminating safety hazards and having high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cooperation between the utility model and the tapered hole on the wheel.

[0013] Figure 2 It is an overall schematic diagram of the utility model.

[0014] Figure 3 It is a schematic diagram of the slide.

[0015] Figure 4 It is a schematic diagram of the claw structure.

[0016] Figure 5 It is a schematic diagram of the claw structure.

[0017] The reference numbers in the figure are as follows: 1. disk body; 2. slide seat; 3. key A; 4. keyway A; 5. claw; 6. key B; 7. keyway B; 8. claw head; 9. positioning cone surface; 10. countersunk bolt; 11. wheel; 12. tapered hole. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] like Figure 2-5 As shown, a special fixture suitable for static balancing detection of a wheel 11 with a tapered hole 12 comprises a disc body 1, a slide seat 2 and a clamping claw 5. The disc body 1 is used to connect the main shaft of the balancing machine. A plurality of slide seats 2 evenly distributed in the axial direction are radially slidably installed in the guide groove on the end surface of the disc body 1. Each slide seat 2 is installed with a clamping claw 5. Figure 2 , 4 As shown, the end of the claw 5 close to the center of the disc body 1 is integrally provided with a claw head 8. Figure 1 , 2 As shown in 4, the outer side surface of the claw head 8 is a positioning cone surface 9 that matches the tapered hole 12 in the middle of the wheel 11.

[0022] like Figure 2 , 3 As shown in FIG. 5 , the bottom of the clamping claw 5 has a cross key B6 and a keyway B7, and the key B6 and the keyway B7 correspond to the keyway A4 and the key A3 on the corresponding slide 2 one by one, and the clamping claw 5 is fixedly connected to the corresponding slide 2 by a countersunk bolt 10.

[0023] The surfaces of the claw 5 and the claw head 8 have a rust-proof oxidation layer formed by blackening treatment.

[0024] The utility model designs a special clamping claw 5 based on the slide seat 2 on the three-jaw chuck structure of the existing balancing machine. The radial runout of the main shaft of the balancing machine is 0.02mm. After using the new clamping claw 5, the radial runout is 0.03mm, which can meet the requirements of static balance detection of the wheel 11 (maximum allowable unbalance amount 25g·m) and tread radial runout (0.1mm).

[0025] The clamping principle of the wheel 11 of the present invention is as follows:

[0026] First, all the claws 5 on the disc body 1 are driven by a wrench to move radially toward the middle to within the range of the tapered hole 12 of the wheel 11.

[0027] The wheel 11 is nested and placed on the claws 5 in the vertical direction, and then all the claws 5 are driven to move radially outward from the middle of the disc body 1 and finally the positioning conical surfaces 9 on all the claws 5 are completely fitted with the conical holes 12 of the wheel 11.

Claims

1. A special fixture suitable for static balancing detection of tapered hole wheels, comprising a disc body (1), a slide seat (2) and a clamping claw (5), wherein the disc body (1) is used to connect to the main shaft of a balancing machine, a plurality of slide seats (2) evenly distributed in the axial direction are radially slidably mounted in guide grooves on the end surface of the disc body (1), and each slide seat (2) is mounted with a clamping claw (5), characterized in that: A claw head (8) is integrally provided at one end of the claw (5) near the center of the disc body (1), and the outer side surface of the claw head (8) is a positioning cone surface (9) matching the tapered hole (12) in the middle of the wheel (11). The bottom of the claw (5) has a cross-shaped key B (6) and a keyway B (7), and the key B (6) and the keyway B (7) are matched with the keyway A (4) and the key A (3) on the corresponding slide seat (2) in a one-to-one correspondence. The claw (5) is fixedly connected to the corresponding slide seat (2) by a countersunk bolt (10).

2. A special fixture for static balance detection of tapered hole wheels according to claim 1, characterized in that: The surfaces of the claw (5) and the claw head (8) have a rust-proof oxidation layer formed by blackening treatment.

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