Special tool clamp for eccentric sealing ring sleeve

Abstract

A tool clamp special for an eccentric sealing ring sleeve is characterized in that a sliding groove is formed in a base, a movable seat with a sliding block embedded in the bottom is located on the base, the sliding block is correspondingly arranged in the sliding groove to be in movable fit, and a plurality of locking bolts are arranged in the movable seat and are in corresponding threaded connection with the base; a positioning boss is arranged in the middle of the upper surface of the moving seat, the outer diameter of the positioning boss is correspondingly positioned and matched with the inner diameter of a workpiece, and the center of a pressing plate for pressing and fixing the workpiece is in threaded connection with the moving seat; the base is provided with a positioning pin hole which deviates by a specified amount relative to the center shaft, a corresponding through hole is formed in the movable seat, and the positioning pin can penetrate through the through hole to be arranged in the positioning pin hole to be fixed. According to the utility model, the structure is reasonable, after a workpiece is clamped and fixed in the movable seat, the movable seat can move by a specified offset and then is fixed, the positioning is accurate, the fixation is reliable, the eccentric excircle can be conveniently processed, the adjustment is easy, the processing efficiency is greatly improved, the workpiece only needs to be clamped once, the processing precision is ensured, and the production quality is improved.

Description

Technical Field

[0001] The utility model relates to a tooling fixture, in particular to a fixture for machining an eccentric sealing ring sleeve. Background Art

[0002] The inner circles and outer circles of many special sealing ring sleeves are not concentric circles, and the centers of the two are relatively eccentric. Even the outer circles of some sealing ring sleeves are not even complete circles, but are composed of different arcs, forming multiple eccentricities relative to the center of the inner circle. At present, there is no ideal special fixture for machining eccentric sealing ring sleeves. Not only are the machining steps cumbersome and the production efficiency low, but also the workpiece needs to be clamped multiple times during the machining process, resulting in an increase in cumulative error, a decrease in machining accuracy, and an impact on quality. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides a special tooling fixture for eccentric sealing ring sleeves that can be efficiently machined with good accuracy.

[0004] The utility model includes a base that can be correspondingly installed on a machine tool chuck. A chute is provided on the upper surface of the base, and a moving seat with a slider embedded at the bottom is located on the base. The slider is correspondingly placed in the chute for moving cooperation, and several locking bolts are provided in the moving seat and are threadedly connected to the base correspondingly; a positioning boss is provided in the middle of the upper surface of the moving seat, and the outer diameter of the positioning boss is correspondingly positioned and matched with the inner diameter of the workpiece. A pressing plate for pressing and fixing the workpiece is centrally threadedly connected to the moving seat; a positioning pin hole offset by a specified amount relative to the central axis is provided on the base, and a corresponding through hole is provided in the moving seat. The positioning pin can pass through the through hole and be placed in the positioning pin hole for fixing.

[0005] The structure of the utility model is reasonable and easy to use. After the workpiece is clamped and fixed in the moving seat, the moving seat can be displaced by a specified offset amount and then fixed. The positioning is accurate and the fixation is reliable. An eccentric outer circle can be conveniently machined, the adjustment is easy, the machining steps are simplified, the machining efficiency is greatly improved, and the workpiece only needs to be clamped once, the machining accuracy is guaranteed, and the production quality is improved.

[0006] The following further describes the utility model in conjunction with the drawings and specific embodiments. Brief Description of the Drawings

[0007] Figure 1 is the main structural schematic diagram of the embodiment.

[0008] Figure 2 is Figure 1 the front view of the base in

[0009] Figure 3 is Figure 1 the A-A sectional view schematic diagram of

[0010] Figure 4 is Figure 1Schematic view of the B-B sectional view. Detailed implementation mode

[0011] As Figures 1 to 4 shown, the base 1 can be correspondingly installed on the machine tool chuck. A chute 2 is provided on the upper surface of the base 1, and a moving seat 3 with a slider 4 embedded at the bottom is located on the base 1. The slider 4 is correspondingly placed in the chute 2 for moving cooperation. Several locking bolts 5 are provided in the moving seat 3 and are threadedly connected to the base 1 correspondingly. A positioning boss 6 is provided in the middle of the upper surface of the moving seat 3. The outer diameter of the positioning boss 6 and the inner diameter of the workpiece 11 are correspondingly positioned and matched. A pressing plate 7 for pressing and fixing the workpiece 11 is centrally threadedly connected to the moving seat 3. A positioning pin hole 8 offset by a specified amount relative to the central axis is provided on the base 1. A corresponding through hole 9 is provided in the moving seat 3. A positioning pin 10 can pass through the through hole 9 and be placed in the positioning pin hole 8 for fixing.

[0012] In the base 1 of this embodiment, two positioning pin holes 8 with different specified offsets are provided, and two corresponding through holes 9 are also provided in the moving seat 3, so that double eccentric machining can be performed. The slider 4 can adopt a flat key, and the chute 2 adopts a keyway. The flat key and the keyway are in precise moving cooperation, and the displacement is smoother and more accurate.

[0013] During clamping and use, the inner diameter of the workpiece 11 to be machined is correspondingly sleeved on the positioning boss 6, and then the workpiece 11 is pressed and fixed on the moving seat 3 by using the pressing plate 7. The moving seat 3 is displaced along the chute 2 to a position where a through hole 9 and the corresponding positioning pin hole 8 overlap, the positioning pin 10 is inserted for fixing, and then the locking bolts 5 are tightened to firmly connect the moving seat 3 and the base 1, and then the workpiece 11 can be machined. After completion, if double eccentric machining is required, only need to loosen the locking bolts 5 and take out the positioning pin 10, displace the moving seat 3 along the chute 2 to a position where another through hole 9 and the corresponding positioning pin hole 8 overlap, insert the positioning pin 10 for fixing, and then firmly connect the moving seat 3 and the base 1, and machining can be performed again. During the whole machining process, the workpiece 11 only needs to be clamped once, and the machining accuracy is good.

Claims

1. A special fixture for an eccentric sealing ring sleeve, comprising a base that can be mounted on a machine tool chuck, characterized by: A slide groove (2) is provided on the top of the base (1), and a movable seat (3) with a slider (4) embedded at the bottom is located on the base (1). The slider (4) is correspondingly placed in the slide groove (2) for movement and cooperation. The movable seat (3) has a plurality of locking bolts (5) and is threadedly connected to the base (1). A positioning boss (6) is provided in the middle of the upper surface of the movable seat (3). The outer diameter of the positioning boss (6) and the inner diameter of the workpiece (11) are correspondingly positioned and matched. The center of the pressure plate (7) for pressing and fixing the workpiece (11) is threadedly connected to the movable seat (3). A positioning pin hole (8) is provided on the base (1) and is offset by a specified amount relative to the central axis. A corresponding through hole (9) is provided in the movable seat (3). The positioning pin (10) can pass through the through hole (9) and be placed in the positioning pin hole (8) for fixing.

2. The special fixture for the eccentric sealing ring sleeve according to claim 1 is characterized by: The base (1) is provided with two positioning pin holes (8) having different offset specified amounts, and the movable seat (3) is also provided with two corresponding through holes (9).

3. The special fixture for eccentric sealing ring sleeve according to claim 1 or 2, characterized in that: The slider (4) adopts a flat key, and the slide groove (2) adopts a key groove, and the flat key and the key groove are precisely matched.

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