Arc chamfering clamp for inner circle of arc piece of plug valve

Abstract

The utility model provides an arc chamfering clamp for an inner circle of an arc piece of a plug valve. The arc chamfering clamp comprises a bottom plate, a positioning mandrel, a fixing seat, a locking pressing plate and the arc piece. The bottom plate is of a T-shaped cylindrical base structure with a through hole formed in the center, and the outer side face of the bottom of the bottom plate and the clamping plate are detachably installed. The positioning mandrel is of a T-shaped circular shaft structure, the bottom of the positioning mandrel is placed in the through hole, and the upper end of the positioning mandrel extends out of the hole and is used for positioning. The two fixing seats are of a trapezoidal structure and are symmetrically distributed and installed on the two sides of the positioning mandrel. The locking pressing plate is installed on the bottom plate and between the fixing seats and used for fixing the arc pieces. The arc piece is placed on the opposite outer surfaces of the two fixing seats, and the center hole of the arc piece, the center opening hole of the bottom plate and the center of the positioning mandrel are located on the same straight line. The clamp is simple, convenient to manufacture, capable of achieving complete self-made machining, accurate in center, capable of achieving repeated machining, small in error and suitable for batch inner arc face machining, and the center of the clamp body is positioned according to the circle center of an arc piece hole.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of plug valve and processing design, especially, relate to a plug valve arc piece inner circle arc chamfer clamp. BACKGROUND

[0002] Plug valve is important sealing element in petroleum pipe fitting, is extremely high in the use to accuracy requirement, but now using clamp clamping arc piece on plug valve, carries out chamfer production, for the inner circle circumference line chamfer this aspect, the clamp often exists unable to process inner circle arc chamfer according to standard size mode. Because the state of arc piece forming is not conducive to clamping processing, generally adopts manual chamfer, deburring mode or grinding mode to remove burr problem.

[0003] In addition, the existing manual burr is removed before finish machining, cannot completely cover the burr of the hole after finish machining, because the size of the removed burr is uneven, causing the grinding wheel to scratch during the fine grinding process, affecting the accuracy of the grinding wheel, and removing the burr after finish machining will affect the accuracy of the inner arc, causing scratches. SUMMARY

[0004] Technical scheme: in order to solve the above technical problem, realize that the arc piece on the plug valve is processed and chamfered, uniform, convenient for workshop batch production processing, the utility model provides a kind of plug valve arc piece inner circle arc chamfer clamp, specifically including bottom plate, positioning mandrel, fixed seat, locking pressure plate, arc piece;The bottom plate is T-shaped and the center is a through hole cylindrical base structure, and the outer side surface of the bottom is detachably installed with the clamping plate;The positioning mandrel is T-shaped cylindrical structure, and the bottom is placed in the through hole and the upper end is stretched out of the hole, for positioning;The fixed seat is trapezoidal structure, provided with two, symmetrically distributed and installed on the both sides of positioning mandrel;The locking pressure plate is installed on the bottom plate and between the fixed seat, for fixing arc piece;The arc piece is placed on the opposite outer surface of the two fixed seats, wherein the center hole of the arc piece, the center opening of the bottom plate and the center of the positioning mandrel are on a straight line.

[0005] As an improvement, the locking pressure plate includes a positioning cylinder and a buckle plate;The positioning cylinder is installed on the bottom plate, and the upper end is hinged to the buckle plate;The buckle plate is a block structure, which is parallel to the upper surface of the bottom plate when used to clamp the arc piece on the bottom plate;When perpendicular to the upper surface of the bottom plate, it is used for placing or taking out the arc piece from the clamp.

[0006] As an improvement, the outer wall of the arc piece to be chamfered is upward, for production.

[0007] As an improvement, it further includes bolts, which are provided in multiple groups to fix the bottom plate and the fixed seat.

[0008] Beneficial effects: the clamp provided by the utility model compared with the prior art is simple and convenient to manufacture, is completely self-made and processed, the center of the clamp body is positioned according to the center of the arc piece hole, the center is accurate, the clamp can be repeatedly processed, the error is small, and the clamp is suitable for batch inner arc surface processing. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is a sectional structure schematic view of the clamp of the utility model.

[0010] Fig. 2 It is a plan view of the clamp of the utility model.

[0011] In the drawing: base plate 1, positioning mandrel 2, fixed seat 3, locking pressing plate 4, arc piece 5, positioning cylinder 6, buckle plate 7, bolt 8. DETAILED DESCRIPTION

[0012] The specific embodiments of the utility model will be further described in detail in combination with examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0013] See Figs. 1-2 As shown in the utility model provides a cock valve arc piece inner circle arc chamfer clamp, including base plate 1, positioning mandrel 2, fixed seat 3, locking pressing plate 4, arc piece 5, wherein the base plate 1 is T type and the center is opened one through hole's cylinder base structure, bottom outer side surface and clamping plate are detachably installed, the positioning mandrel 2 is T type's round shaft structure, bottom is placed in the through hole and the upper end is stretched out the hole, is used for positioning effect, the fixed seat 3 is trapezoidal structure, is provided with two, is symmetrically distributed and is installed on both sides of positioning mandrel 2, the locking pressing plate 4 is installed on the base plate 1 and between fixed seat 3, is used for fixing arc piece 5, the arc piece 5 is placed on the opposite outer surface of two fixed seat 3, wherein the center hole of arc piece 5, the center opening of base plate 1, the center of positioning mandrel 2 are on a straight line.

[0014] The locking pressing plate 4 includes positioning cylinder 6, buckle plate 7, the positioning cylinder 6 is installed on the base plate 1, and the upper end is hinged with buckle plate 7, the buckle plate 7 is block structure, when being parallel with the upper surface of base plate 1, is used for clamping arc piece 5 on the base plate 1, when being perpendicular to the upper surface of base plate 1, is used for arc piece 5 to be put into or take out the clamp. Preferably, the outer wall of arc piece 5 to be chamfered faces upwards, for production.

[0015] Still include bolt 8, the bolt 8 is set multiple groups, is used for fixing base plate 1 and fixed seat 3.

[0016] Working principle: the circular bottom plate bottom and the card board are connected and fixed, the fixed seat is supported according to the arc piece shape, the positioning core shaft is matched with the arc piece center hole, the center positioning function is played, the locking block is designed, the clamping and locking can be quickly carried out, the center can be fixed by the center cooperation of the positioning core shaft when the fixture is used, the center is fixed by the center cooperation of the positioning core shaft, the chamfering processing can be quickly and accurately carried out after locking, how much allowance is needed, the chamfering can be directly processed, the chamfering and the round angle structure can be made.

[0017] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A plug valve arc piece inner circle arc chamfer clamp, characterized in that: It includes bottom plate (1), positioning mandrel (2), fixed seat (3), locking pressure plate (4), arc piece (5), bottom plate (1) is T-shaped and the center is opened a through hole cylindrical base structure, the bottom outside surface is detachably installed with the clamping plate, positioning mandrel (2) is T-shaped cylindrical shaft structure, the bottom is placed in the through hole and the upper end is stretched out of the hole, used for positioning function, fixed seat (3) is trapezoidal structure, provided with two, symmetrically distributed and installed on both sides of positioning mandrel (2), locking pressure plate (4) is installed on bottom plate (1) and fixed between seat (3), used for fixing arc piece (5), arc piece (5) is placed on the opposite outer surface of two fixed seats (3), wherein the center hole of arc piece (5), the center opening of bottom plate (1) and the center of positioning mandrel (2) are on a straight line.

2. The faucet valve arc piece inner circle arc chamfer clamp according to claim 1, wherein: The locking pressure plate (4) includes positioning cylinder (6) and buckle plate (7), the positioning cylinder (6) is installed on the bottom plate (1), and the upper end is hinged with the buckle plate (7), the buckle plate (7) is block structure, when parallel with the upper surface of the bottom plate (1), used for clamping arc piece (5) on the bottom plate (1), when perpendicular to the upper surface of the bottom plate (1), used for arc piece (5) to put into or take out the clamp.

3. The faucet valve arc piece inner circle arc chamfer clamp according to claim 1, wherein: The outer wall of arc piece (5) to be rounded is upward, used for production.

4. The tap valve arc piece inner circle arc chamfer clamp according to claim 1, characterized in that: It also includes bolts (8), the bolts (8) are provided in multiple groups, used for fixing bottom plate (1) and fixed seat (3).

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