A ceramic plunger blank coaxiality positioning tool

Abstract

The utility model discloses a kind of ceramic plunger blank piece coaxiality positioning tool in mechanical processing technical field, comprising: support piece, mobile locking piece is equipped on the support piece, rubber bushing is equipped on the support piece, the plunger blank piece is sleeved on rubber bushing, the mobile locking piece is used for adjusting the tension of rubber bushing to fix plunger blank piece and make it with support piece coaxial;The plunger blank piece is fixed on the outer wall of rubber bushing by adjusting mobile locking piece, adjusting the tension of rubber bushing, avoid the situation that plunger blank piece is fixed and appears rigid contact, and plunger blank piece is guaranteed with support piece coaxial, improve the machining precision of product, reduce clamping and the time of table, save manpower, simultaneously not occupy the space of plunger blank piece outside, increase the utilization of material, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of machining, specifically to a coaxiality positioning fixture for a ceramic plunger blank. Background Technology

[0002] When machining ceramic plunger blanks, they need to be fixed. Traditional clamping methods often use rigid fixtures, which lack necessary buffering and protection measures, easily leading to damage to the workpiece surface. Furthermore, it is often difficult to ensure the concentricity of the workpiece, resulting in low precision of the machined product, which cannot meet the requirements of high-precision machining. In addition, the fixture occupies the outer area of ​​the workpiece, requiring a lot of allowance at both ends of the product, reducing material utilization and increasing production costs. Utility Model Content

[0003] The purpose of this utility model is to provide a coaxiality positioning fixture for ceramic plunger blanks, which solves the defects of existing ceramic plunger blank clamping methods.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a coaxiality positioning fixture for a ceramic plunger blank, comprising: a support member, a movable locking member provided on the support member, a rubber bushing sleeved on the support member, the plunger blank being sleeved on the rubber bushing, and the movable locking member being used to adjust the tension of the rubber bushing to fix the plunger blank and make it coaxial with the support member.

[0005] Preferably, the support member is a circular rod.

[0006] Preferably, the end of the support member is an arc-shaped surface, and the curvature of the arc-shaped surface is greater than the curvature of the end of the inner cavity of the plunger blank.

[0007] Preferably, the end of the support member is provided with a pad, the cross-section of the pad is circular, and the pad is coaxial with the support member.

[0008] Preferably, the length of the rubber bushing is greater than the inner cavity depth of the plunger blank.

[0009] Preferably, the movable locking element is a nut, which is sleeved on the outer wall of the circular rod, and the circular rod is provided with threads for matching the nut.

[0010] Preferably, the nut is connected to the rubber bushing via a metal bushing, and the nut and the metal bushing are rotatably connected.

[0011] Preferably, the sum of the lengths of the nut, the metal bushing, and the rubber bushing is greater than half the length of the support member.

[0012] The beneficial effects of this utility model are as follows: by adjusting the movable locking component, the tension of the rubber bushing is adjusted, and the plunger blank is fixed on the outer wall of the rubber bushing, avoiding hard contact when the plunger blank is fixed, and ensuring that the plunger blank and the support are coaxial, improving the processing accuracy of the product, reducing the time for clamping and calibration, saving manpower, and not occupying the space on the outside of the plunger blank, increasing the utilization rate of materials and reducing costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the coaxiality positioning fixture for the ceramic plunger blank of this utility model.

[0014] In the diagram: 1. Support component; 2. Moving locking component; 3. Metal bushing; 4. Rubber bushing; 5. Plunger blank; 6. Pad block. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0016] Example 1 Please see Figure 1 A coaxiality positioning fixture for a ceramic plunger blank includes: a support 1 (the support 1 is a circular rod made of metal, such as stainless steel), and one end of the support 1 (e.g., Figure 1 As shown, the left end of the support member 1 is fixed on the machine tool (e.g., by a gripper). The support member 1 is provided with a movable locking member 2. A rubber bushing 4 is fitted on the outer wall of the support member 1. The plunger blank 5 to be processed is fitted on the outer wall of the rubber bushing 4.

[0017] It should be noted that after the plunger blank 5 is fitted onto the outer wall of the rubber bushing 4, the movable locking member 2 is controlled to move on the outer wall of the support member 1, so that the force applied by the movable locking member 2 to the rubber bushing 4 is changed, and the tension of the rubber bushing 4 is adjusted to fix the plunger blank 5 and make it coaxial with the support member 1.

[0018] In this embodiment, as a further optimization, please refer to... Figure 1 The end of the support member 1 is arc-shaped, and the curvature of the arc-shaped surface is greater than the curvature of the end of the inner cavity of the plunger blank 5; the sharp area at the end of the support member 1 is eliminated, so that the end face of the support member 1 does not contact the inner wall of the plunger blank 5, thus avoiding damage to the inner cavity of the plunger blank 5 caused by the end of the support member 1 contacting the inner cavity of the plunger blank 5, and playing a role in protecting the plunger blank 5.

[0019] In this embodiment, as a further optimization, please refer to... Figure 1 The end of the support member 1 is provided with a pad 6 (the pad 6 can be made of rubber material, which can play a buffering role). The cross-section of the pad 6 is circular, and the pad 6 is coaxial with the support member 1. The pad 6 serves to separate the right end of the support member 1 from the plunger blank 5, protect the green blank (plunger blank 5), and position the plunger blank 5. The green blank has low strength and cannot come into contact with metal, otherwise it is easy to cause cracks and chipping.

[0020] In this embodiment, as a further optimization, please refer to... Figure 1 The movable locking element 2 is a nut, which is sleeved on the outer wall of a circular rod. The circular rod has threads for matching the nut. The nut is connected to the rubber bushing 4 through a metal bushing 3. The nut and the metal bushing 3 are rotatably connected so that when the nut rotates, the metal bushing 3 will not rotate with it, thus avoiding applying rotational force to the rubber bushing 4 and causing it to wrinkle, and protecting the rubber bushing 4. Moving the nut allows the metal bushing 3 to move to the left or right on the support 1, adjusting the force of the metal bushing 3 on the rubber bushing 4 and adjusting the tension of the rubber bushing 4.

[0021] In this embodiment, as a further optimization, please refer to... Figure 1 The length of the rubber bushing 4 is greater than the inner cavity depth of the plunger blank 5; this ensures that the rubber bushing 4 is in full contact with the inner wall of the plunger blank 5 and increases the contact area, making the change in the tension of the rubber bushing 4 more stable when fixing the plunger blank 5.

[0022] In this embodiment, as a further optimization, please refer to... Figure 1 The sum of the lengths of the nut, metal bushing 3, and rubber bushing 4 is greater than half the length of the support 1; this brings the nut close to the end of the support 1 that is fixed by the machine tool, reducing the probability of the support 1 bending during the processing of the plunger blank 5, and ensuring the quality of the processing of the plunger blank 5 (because the support 1 bends, the position of the plunger blank 5 will change when the support 1 rotates, such as inconsistent height).

[0023] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A coaxiality positioning fixture for a ceramic plunger blank, characterized in that, include: The support member (1) is provided with a movable locking member (2), and a rubber bushing (4) is fitted on the support member (1). The plunger blank (5) is fitted on the rubber bushing (4). The movable locking member (2) is used to adjust the tension of the rubber bushing (4) to fix the plunger blank (5) and make it coaxial with the support member (1).

2. The coaxiality positioning fixture for a ceramic plunger blank according to claim 1, characterized in that, The support member (1) is a circular rod.

3. The coaxiality positioning fixture for a ceramic plunger blank according to claim 1, characterized in that, The end of the support member (1) is arc-shaped, and the curvature of the arc-shaped surface is greater than the curvature of the end of the inner cavity of the plunger blank (5).

4. The coaxiality positioning fixture for a ceramic plunger blank according to claim 1, characterized in that, The end of the support member (1) is provided with a pad (6), the cross section of the pad (6) is circular, and the pad (6) is coaxial with the support member (1).

5. The coaxiality positioning fixture for a ceramic plunger blank according to claim 1, characterized in that, The length of the rubber bushing (4) is greater than the inner cavity depth of the plunger blank (5).

6. The coaxiality positioning fixture for a ceramic plunger blank according to claim 2, characterized in that, The movable locking component (2) is a nut, which is sleeved on the outer wall of the circular rod, and the circular rod is provided with threads for matching the nut.

7. The coaxiality positioning fixture for a ceramic plunger blank according to claim 6, characterized in that, The nut is connected to the rubber bushing (4) via a metal bushing (3), and the nut is rotatably connected to the metal bushing (3).

8. The coaxiality positioning fixture for a ceramic plunger blank according to claim 7, characterized in that, The sum of the lengths of the nut, metal bushing (3), and rubber bushing (4) is greater than half the length of the support (1).

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