Piston ring end face coating clamp

Abstract

The utility model provides a piston ring end face film coating clamp which comprises a fixed shaft, a movable shaft, a movable shaft, a clamping device and a clamping device, and the fixed shaft is provided with a lower pressing plate and an upper pressing plate from bottom to top; the lower pressing plate and the upper pressing plate are fixed through a supporting shaft. The upper pressing plate and the lower pressing plate are respectively provided with an installation hole used for fixing the supporting shaft. When the upper pressing plate and the lower pressing plate are locked, a workpiece placed between the upper pressing plate and the lower pressing plate cannot rotate during sand blasting.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat treatment of automobile parts, in particular to a piston ring end face coating clamp. BACKGROUND

[0002] In the manufacturing process of the piston ring, the end face of the piston ring is generally only subjected to phosphating or nitriding treatment, and a small amount of rings are subjected to chromium plating treatment in order to achieve a decorative effect, but only the decorative and anti-rust functions can be achieved. With the development of internal combustion engines towards high load and high power, higher requirements are put forward for the impact resistance, wear resistance and corrosion resistance of the end face of the piston ring.

[0003] With the development of internal combustion engines towards high load and high power, higher requirements are put forward for the impact resistance, wear resistance and corrosion resistance of the end face of the piston ring. The service life requirement of customers cannot be met. CONTENT OF THE UTILITY MODEL

[0004] In order to achieve the above purpose, the application provides a piston ring end face coating clamp, which comprises a fixed shaft, and a lower pressing plate and an upper pressing plate are installed on the fixed shaft from bottom to top; the lower pressing plate and the upper pressing plate are fixed through a support shaft; and mounting holes for fixing the support shaft are formed in the upper pressing plate and the lower pressing plate respectively.

[0005] The vertical assembly structure of the fixed shaft and the upper and lower pressing plates realizes the axial positioning stability of the piston ring.

[0006] Specifically, the support shaft is provided with mounting heads at two ends for cooperation with the mounting holes, and the mounting heads are provided with screw holes in the horizontal direction.

[0007] The cooperation structure of the mounting heads and the screw holes enhances the connection rigidity and can withstand high-frequency vibration environment.

[0008] Specifically, the lower pressing plate is further provided with a groove at an end away from the mounting hole, and the groove is provided with a positioning hole in the direction of the center of the lower pressing plate.

[0009] Specifically, the upper pressing plate is further provided with a groove at an end away from the mounting hole; a boss is arranged in the middle of the upper pressing plate, the diameter of the boss is smaller than the diameter of the upper pressing plate, and a through hole is formed in the boss in the direction of the groove.

[0010] Specifically, the piston ring end face coating clamp further comprises a support strip; the cross section of the support strip is T-shaped, the support strip is composed of a positioning part and a limiting part, the width of the limiting part is greater than the width of the positioning part; and the limiting part at the upper end of the support strip is provided with a through hole matched with the through hole of the upper pressing plate.

[0011] Specifically, the mounting hole is a circular hole.

[0012] Specifically, the mounting hole is a square hole.

[0013] Specifically, the upper pressing plate or the lower pressing plate is provided with at least two mounting holes, and the upper pressing plate and the lower pressing plate are provided with the same number of mounting holes.

[0014] Specifically, the lower end of the fixing shaft is provided with a carrier, and the lower surface of the carrier is provided with a plurality of positioning pins.

[0015] Specifically, the limiting part is matched with the groove of the upper pressing plate and the lower pressing plate in width. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain principles of the present application. Other embodiments and many of the intended advantages of the present application will be readily appreciated as the same becomes better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale. Like reference numerals designate corresponding similar parts throughout the various views.

[0017] Figure 1 is a structural schematic view of a fixing shaft of a piston ring end face coating clamp according to an embodiment of the present application;

[0018] Figure 2 is a structural schematic view of a mouth supporting strip of a piston ring end face coating clamp according to an embodiment of the present application;

[0019] Figure 3 is a structural schematic view of an upper pressing plate of a piston ring end face coating clamp according to an embodiment of the present application;

[0020] Figure 4 is a sectional view of an upper pressing plate of a piston ring end face coating clamp according to an embodiment of the present application;

[0021] Figure 5 is a structural schematic view of a lower pressing plate of a piston ring end face coating clamp according to an embodiment of the present application;

[0022] Figure 6 is a structural schematic view of a supporting shaft of a piston ring end face coating clamp according to an embodiment of the present application;

[0023] Figure 7 is a structural schematic view of a piston ring end face coating clamp according to an embodiment of the present application.

[0024] Meaning of each number in the figure: 1, fixing shaft; 1a, carrier; 1b, positioning pin; 2, mouth supporting strip; 2a, limiting part; 2b, positioning part; 2c, through hole; 3, upper pressing plate; 3a, mounting hole; 3b, boss; 3a1, screw hole; 3b1, through hole; 3c, groove; 4, lower pressing plate; 4a, mounting hole; 4b, screw hole; 4c, groove; 4d, positioning hole; 5, supporting shaft; 5a, mounting head; 5b, screw hole. DETAILED DESCRIPTION

[0025] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration illustrative embodiments in which the application can be practiced. For purposes of explanation and illustration, directional terms are used with reference to the orientation of the described figures. However, it is to be understood that the embodiments can be practiced in other orientations than those presented in the figures. The directional terms, such as "top," "bottom," "left," "right," "upper," "lower," and the like are used to aid in describing the embodiments and are not to be construed as limiting. It is to be understood that other embodiments can be utilized and structural or logical changes can be made without departing from the scope of the present application. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0026] As shown in the drawings, a piston ring end face coating fixture comprises: a fixed shaft 1, a lower pressing plate 4 and an upper pressing plate 3 are installed on the fixed shaft 1 from bottom to top; the lower pressing plate 4 and the upper pressing plate 3 are fixed through a support shaft 5; the upper pressing plate 3 and the lower pressing plate 4 are respectively provided with mounting holes 3a / 4a for fixing the support shaft 5. Figures 1 to 5 The vertical assembly structure of the fixed shaft and the upper and lower pressing plates realizes the axial positioning stability of the piston ring.

[0027] Specifically, the support shaft 5 is provided with mounting heads 5a at both ends for cooperation with the mounting holes 3a / 4a, and the mounting heads are provided with screw holes 5b in the horizontal direction.

[0028] The cooperation structure of the mounting head and the screw hole enhances the connection rigidity and can withstand high-frequency vibration environment.

[0029] Specifically, the lower pressing plate 4 is further provided with a recess 4c at one end away from the mounting hole 4a, and the recess 4c is provided with a positioning hole 4d pointing to the center direction of the lower pressing plate 4.

[0030] Specifically, the upper pressing plate 3 is further provided with a recess 3c at one end away from the mounting hole 34; the upper pressing plate 3 is provided with a boss 3b at the middle part, the diameter of the boss 3b is smaller than that of the upper pressing plate 3, and the boss 3b is provided with a through hole 3b1 pointing to the direction of the recess 3c.

[0031] Specifically, it further comprises: a mouth supporting strip 2; the cross section of the mouth supporting strip 2 is T-shaped, the mouth supporting strip is composed of a positioning part 2b and a limiting part 2a, the width of the limiting part 2a is greater than that of the positioning part 2b; and the limiting part 2a at the upper end of the mouth supporting strip 2 is provided with a through hole 2c cooperating with the through hole 3b1 of the upper pressing plate 3.

[0032] Specifically, the mounting hole is a circular hole.

[0033] Specifically, the mounting hole is a square hole.

[0034]

[0035] ​Specifically, the upper pressing plate 3 or the lower pressing plate 4 is provided with at least two mounting holes, and the upper pressing plate 3 and the lower pressing plate 4 are provided with the same number of mounting holes.

[0036] Specifically, the lower end of the fixing shaft 1 is provided with a carrier 1a, and the lower surface of the carrier 1a is provided with a plurality of positioning pins 1b.

[0037] Specifically, the limiting part 2a has a width matched with the groove of the upper pressing plate 3 and the lower pressing plate 4.

[0038] In a specific embodiment, n pieces of piston rings are placed in the two pressing plates with an interval of 10 mm, and then a Φ5 screw is tightened to support the shaft and expand it from inside to outside, so that the piston rings are fixed on the workpiece. Then the workpiece is placed on the fixing shaft, and a water pipe is placed on the workpiece to make the height of the workpiece within the optimal coating range. Then the upper pressing plate is locked on the fixing shaft by a Φ5 screw hole, so that the workpiece does not rotate during sand blasting. After sand blasting, the workpiece piston ring is placed in the furnace for coating.

[0039] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalents, the present application also intends to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not mean that combinations of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A piston ring end face coating fixture, characterized in that, include: A fixed shaft is provided, on which a lower pressure plate and an upper pressure plate are mounted from bottom to top; the lower pressure plate and the upper pressure plate are fixed together by a support shaft; the upper pressure plate and the lower pressure plate are respectively provided with mounting holes for fixing the support shaft.

2. The piston ring end face coating fixture according to claim 1, characterized in that, The support shaft has mounting heads at both ends that mate with the mounting holes, and the mounting heads have screw holes in the horizontal direction.

3. A piston ring end face coating fixture according to claim 2, characterized in that, The lower pressure plate also has a groove at the end away from the mounting hole, and a positioning hole is provided in the groove pointing towards the center of the lower pressure plate.

4. A piston ring end face coating fixture according to claim 2, characterized in that, The upper pressure plate also has a groove at the end away from the mounting hole; a boss is provided in the middle of the upper pressure plate, the diameter of the boss is smaller than the diameter of the upper pressure plate, and a through hole is provided in the direction of the boss pointing towards the groove.

5. A piston ring end face coating fixture according to claim 4, characterized in that, Also includes: The support strip has a T-shaped cross-section and is composed of a positioning part and a limiting part. The width of the limiting part is greater than the width of the positioning part. The limiting part at the upper end of the support strip is provided with a through hole that mates with the through hole of the upper pressure plate.

6. A piston ring end face coating fixture according to any one of claims 1 to 5, characterized in that, The mounting hole is a round hole.

7. A piston ring end face coating fixture according to any one of claims 1 to 5, characterized in that, The mounting hole is a square hole.

8. A piston ring end face coating fixture according to claim 1, characterized in that, The upper pressure plate or the lower pressure plate is provided with at least two mounting holes, and the number of mounting holes provided on the upper pressure plate and the lower pressure plate is the same.

9. A piston ring end face coating fixture according to claim 1, characterized in that, A platform is provided at the lower end of the fixed shaft, and a plurality of positioning pins are provided on the lower surface of the platform.

10. A piston ring end face coating fixture according to claim 5, characterized in that, The width of the limiting part matches the grooves of the upper pressure plate and the lower pressure plate.

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