CN219169631U

CN219169631U - Turning clamp for piston ring

Info

Publication number: CN219169631U
Application number: CN202223489183.7U
Authority: CN
Inventors: 卓锦文; 姜晨阳; 苏波; 余汝西
Original assignee: Guangdong Wencan Die Casting Technology Co ltd
Current assignee: Guangdong Wencan Die Casting Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-13
Anticipated expiration: 2032-12-23

Abstract

The utility model relates to the technical field of automobile part manufacturing, and discloses a turning clamp for a piston ring, which comprises a clamp body, a positioning core seat, a floating positioning core, an air passing plate, a movable connecting plate and a machine tool pull rod, wherein the clamp body is provided with a positioning core seat; the movable connecting plate is connected with a clamp pull rod, the clamp pull rod sequentially penetrates through the air plate, the clamp body, the positioning core seat and the floating positioning core, the floating positioning core is provided with a lug, a pressing block is connected between the lug and the end part of the clamp pull rod, and two ends of the pressing block are respectively connected with the lug and the end part of the clamp pull rod in a rotating mode. The floating positioning core for limiting the piston ring is arranged, the machine tool pull rod is used for pulling the movable connecting plate and the clamp pull rod to axially reciprocate, and the clamp pull rod and the lug are used for enabling the pressing block to move towards the piston ring or move away from the piston ring, so that the quick clamping of a workpiece is realized, and the clamping efficiency of the workpiece is improved; the structure is simple, the design is ingenious, and the industrial popularization and application are facilitated.

Description

Turning clamp for piston ring

Technical Field

The utility model relates to the technical field of automobile part manufacturing, in particular to a turning clamp for a piston ring.

Background

The piston ring is a metal elastic ring with large outward expansion deformation, which is used for being embedded in a piston groove, and forms a seal between the outer circumferential surface of the ring and a cylinder and between the ring and one side surface of the ring groove by means of the pressure difference of gas or liquid through reciprocating and rotating movements. After the piston ring is demolded and formed (namely a blank of the piston ring), the piston ring is required to be placed on a lathe, the blank is clamped by a clamp, the edge of the blank is processed by a cutter, and the existing piston ring clamping clamp is disclosed in China patent with publication number CN 108526937A, and the existing piston ring clamping clamp comprises a clamp body, a gland, a plurality of pressing plates and a plurality of supporting blocks with the same number as the pressing plates; the middle part processing of the anchor clamps body has positioning groove, and the gland is installed and is used for compressing tightly the piston ring in positioning groove, and the processing of positioning groove outside has the annular protruding portion that is used for locating gland and support the piston ring, is provided with a plurality of supporting shoe along circumference equipartition on the up end of the anchor clamps body, has placed the clamp plate that is used for compressing tightly the piston ring on every supporting shoe. When an inner hole is turned, the three pressing plates move downwards to press the piston ring tightly; when the outer circle is turned, a gland positioned in the center is used for pressing the piston ring. But above-mentioned anchor clamps can process hole and excircle of turning, need install or dismantle three clamp plates when using, have increased the time of changing spare part.

It can be seen that there is a need for improvements and improvements in the art.

Disclosure of Invention

In view of the defects of the prior art, the utility model aims to provide a turning clamp for a piston ring, which aims to realize quick clamping of the piston ring and improve the processing efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the turning clamp for the piston ring comprises a clamp body, a positioning core seat connected with the side surface of the clamp body, a floating positioning core connected with the positioning core seat and used for limiting the piston ring, an air passing plate connected with the other side surface of the clamp body, a movable connecting plate arranged on one side of the air passing plate, and a machine tool pull rod arranged in the center of the movable connecting plate; the movable connecting plate is connected with a clamp pull rod, the clamp pull rod sequentially passes through the air plate, the clamp body, the positioning core seat and the floating positioning core, a lug is arranged on the floating positioning core, a pressing block is connected between the lug and the end part of the clamp pull rod, two ends of the pressing block are respectively connected with the lug and the end part of the clamp pull rod in a rotating way, and the machine tool pull rod is used for pulling the clamp pull rod to do axial movement.

The turning clamp for the piston ring is characterized in that a first through hole is formed in the lug, a second through hole is formed in the end part of the clamp pull rod, a third through hole is formed in one end of the pressing block, and a waist-shaped hole extending along the length direction of the pressing block is formed in the other end of the pressing block; the first through hole and the third through hole are penetrated by the same bolt; the second through hole and the waist-shaped hole are penetrated by the same movable pin.

The turning clamp for the piston ring is characterized in that a pressing nozzle is arranged on the end face, away from the lug, of the pressing block; the pressing nozzle extends towards the direction of the piston ring and is used for abutting against the groove bottom of the groove on the piston ring.

The turning clamp for the piston ring is characterized in that a plurality of supporting lugs are arranged on the peripheral wall of the floating positioning core at equal angles, and the side face of each supporting lug is used for being abutted against the inner side face of the piston ring.

And the outer diameter of the end surface of the floating positioning core is matched with the inner diameter of the piston ring.

The turning clamp for the piston ring is characterized in that three clamp pull rods are arranged at equal angles, and three lugs and three pressing blocks are correspondingly arranged.

The turning clamp for the piston ring is characterized in that a U-shaped notch with an outward opening is formed in the movable connecting plate, the tail end of the clamp pull rod is connected with a positioning block, and the inner side surface of the positioning block is abutted to the outer side surface of the movable connecting plate.

The turning clamp for the piston ring is characterized in that the positioning block is cylindrical, any two opposite faces of the positioning block are planes, and the distance between the two planes is smaller than the groove width of the U-shaped notch.

The turning clamp for the piston ring is characterized in that a stroke cushion block and a lock nut are sleeved on the machine tool pull rod, and two side faces of the stroke cushion block are respectively abutted to the outer side face of the movable connecting plate and the inner side face of the lock nut.

The beneficial effects are that:

the utility model provides a turning clamp for a piston ring, which is characterized in that a clamp body used for being connected with a machine tool, a floating positioning core used for limiting the piston ring, a machine tool pull rod used for pulling a movable connecting plate and a clamp pull rod to axially reciprocate, and a clamp pull rod and a lug used for enabling a pressing block to move towards the direction of the piston ring or move towards the direction far away from the piston ring are arranged, so that the rapid clamping of a workpiece is realized, and the clamping efficiency of the workpiece is improved; the structure is simple, the design is ingenious, and the industrial popularization and application are facilitated.

Drawings

Fig. 1 is a schematic view of a turning fixture for a piston ring according to the present utility model.

Fig. 2 is a schematic diagram of a second structure of the turning jig for a piston ring.

Fig. 3 is a cross-sectional view of a turning jig for a piston ring.

Fig. 4 is a schematic structural view of the turning jig for a piston ring after the jig body is removed.

Fig. 5 is a schematic view showing a partial structure of a turning jig for a piston ring.

Fig. 6 is a cross-sectional view of the turning jig for a piston ring after the jig body is removed.

Fig. 7 is a schematic structural view of a piston ring.

Description of main reference numerals: 10-fixture body, 11-positioning core seat, 12-floating positioning core, 121-supporting lug, 13-passing air plate, 20-movable connecting plate, 21-U-shaped notch, 30-machine tool pull rod, 31-stroke cushion block, 32-locking nut, 40-fixture pull rod, 41-second through hole, 42-positioning block, 421-plane, 422-cambered surface, 50-lug, 51-first through hole, 60-press block, 61-third through hole, 62-waist-shaped hole, 63-movable pin, 64-press nozzle and 100-piston ring.

Detailed Description

The utility model provides a turning fixture for a piston ring, which is used for making the purpose, technical scheme and effect of the utility model clearer and more definite, and the utility model is further described in detail below by referring to the attached drawings and examples. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-7, the present utility model provides a turning fixture for piston rings, comprising a fixture body 10, a positioning core seat 11 connected with the right side surface of the fixture body 10, a floating positioning core 12 connected with the positioning core seat 11 and used for limiting the piston rings 100, an air passing plate 13 connected with the left side surface of the fixture body 10, a movable connecting plate 20 arranged on the left side of the air passing plate 13, and a machine tool pull rod 30 arranged in the center of the movable connecting plate 20; the movable connecting plate 20 is connected with a clamp pull rod 40, the clamp pull rod 40 sequentially passes through the air plate 13, the clamp body 10, the positioning core seat 11 and the floating positioning core 12, the floating positioning core 12 is provided with a lug 50, a pressing block 60 is connected between the lug 50 and the end part of the clamp pull rod 40, two ends of the pressing block 60 are respectively and rotatably connected with the lug 50 and the end part of the clamp pull rod 40, and the machine tool pull rod 30 is used for pulling the clamp pull rod 40 to do axial movement.

In practical application, the fixture body 10 and the air passing plate 13, the fixture body 10 and the positioning core seat 11, and the positioning core seat 11 and the floating positioning core 12 are detachably connected through bolts, so that the fixture is convenient to install. The tool bar 30 is connected to a lathe, and the jig body 10 is connected to the lathe by bolts.

An operator or a feeding mechanism sleeves a piston ring 100 to be processed on the floating positioning core 12, when a driving source (which can be a driving source with telescopic functions such as a hydraulic cylinder, an air cylinder and the like) on a lathe pulls a machine tool pull rod 30 towards the direction of the lathe (the direction that the lathe is positioned on the left side is described), namely, when the machine tool pull rod 30 is pulled leftwards, the movable connecting plate 20 and the clamp pull rod 40 arranged on the movable connecting plate 20 are synchronously pulled leftwards, so that the length of the clamp pull rod 40 protruding out of the floating positioning core 12 is shortened, a pressing block 60 connected with the right end surface of the clamp pull rod 40 rotates around the other end of the pressing block 60, and the pressing block 60 synchronously moves towards the direction of the piston ring 100 until the inner/left side surface of the pressing block 60 is abutted against the outer/right side surface of the piston ring 100, and clamping and fixing of the piston ring 100 are realized. The lathe then rotates the entire machining fixture and the piston ring 100 clamped thereon, and a vertically downward cutter on the lathe machines the edge of the piston ring 100. After the machining is finished, the cutter is withdrawn, the machining clamp stops rotating, the driving source pushes the machine tool pull rod 30 to the right side, the movable connecting plate 20 and the clamp pull rod 40 synchronously move to the right side until the right side surface of the movable connecting plate 20 is in contact with the left side surface of the air passing plate 13 again, the length of the protruding part of the clamp pull rod 40 is prolonged, meanwhile, the pressing block 60 is lifted up, the pressing block 60 is free from contacting with the piston ring 100, an operator or a blanking mechanism can take down the machined piston ring 100, and the operation is repeated to clamp and machine the next workpiece.

The floating positioning core 12 for limiting the piston ring 100 is arranged, the machine tool pull rod 30 for pulling the movable connecting plate 20 and the clamp pull rod 40 to move leftwards or rightwards is used for enabling the pressing block 60 to move towards the piston ring 100 (leftwards or rightwards) or moving away from the piston ring 100 (rightwards), and the clamp pull rod 40 and the lug 50 are used for realizing quick clamping of a workpiece, so that the clamping efficiency of the workpiece is improved; the structure is simple, the design is ingenious, and the industrial popularization and application are facilitated.

Referring to fig. 3-6, in some embodiments, the lug 50 is provided with a first through hole 51, the end of the clamp pull rod 40 is provided with a second through hole 41, one end of the pressing block 60 is provided with a third through hole 61, and the other end of the pressing block 60 is provided with a waist-shaped hole 62 extending along the length direction thereof; the first through hole 51 and the third through hole 61 are penetrated by the same pin (the pin is hidden for displaying the first through hole 51 and the third through hole 61); the second through hole 41 and the waist-shaped hole 62 are penetrated by the same movable pin 63. When assembled, the third through hole 61 is aligned with the first through hole 51, and one end of the pressing block 60 is connected with the lug 50 by a latch. Similarly, the other end of the pressing block 60 is fixed to the end of the clamp lever 40 by a movable pin 63. The latch and movable pin 63 only serves to connect the press block 60 with the lug 50 and the clamp pull rod 40, and the press block 60 can still rotate relative to the lug 50 and the clamp pull rod 40. The provision of the waist-shaped hole 62 enables the movable pin 63 to relatively slide under the guide action of the waist-shaped hole 62 without restricting the movement of the pressing block 60.

Referring to fig. 3 and 6, in some embodiments, the end of the press block 60 remote from the lug 50 is provided with a press nozzle 64; the pressure nozzle 64 extends in the direction of the piston ring 100 and is intended to abut the groove bottom of a groove in the piston ring 100. When the pressing block 60 is pulled leftwards, the pressing nozzle 64 stretches into the groove of the piston ring 100, at the moment, the side face of the pressing block 60 is abutted with the side face of the piston ring 100, and the clamping effect of the processing clamp on the piston ring 100 is further improved. When the pressing nozzle 64 is not located on the groove of the piston ring 100, an operator can manually rotate the piston ring 100 to adjust the position of the groove, so that the pressing nozzle 64 can be located in the groove.

Referring to fig. 4 and 5, in some embodiments, a plurality of supporting protrusions 121 are disposed on the outer peripheral wall of the floating positioning core 12 at equal angles, and each side surface of the supporting protrusions 121 is used to abut against the inner side surface of the piston ring 100. The supporting projection 121 is used for supporting the piston ring 100 on the one hand and limiting the position of the piston ring 100 relative to the floating positioning core 12 on the other hand, so that the pressing block 60 can be conveniently abutted with the piston ring 100. The phenomenon that the pressing block 60 cannot abut against the piston ring 100 even after the clamp pull rod 40 is pulled to the leftmost side when the piston ring 100 is excessively deeply sleeved in the floating positioning core 12 is prevented. In this embodiment, three support protrusions 121 are provided, and an angle between each of the support protrusions 121 is 120 °.

Referring to fig. 1, in some embodiments, the outer diameter of the end surface of the floating core 12 is adapted to the inner diameter of the piston ring 100. The piston ring 100 has a certain elasticity, and the piston ring 100 with the inner diameter corresponding to the outer diameter of the floating positioning core 12 is sleeved on the floating positioning core 12 for initially positioning the piston ring 100.

Referring to fig. 1, in some embodiments, the clamp pull rod 40 is arranged in three at equal angles, and the lugs 50 and the press block 60 are correspondingly arranged in three. Specifically, the three clamp pull rods 40 have an angle of 120 degrees and have an equilateral triangle stable structure. The number of clamp pull rods 40, lugs 50 and press blocks 60 is limited, and the piston ring 100 is clamped from a plurality of positions.

Referring to fig. 2, in some embodiments, the movable connecting plate 20 is provided with an outward opening U-shaped slot 21, the end of the clamp pull rod 40 is connected with a positioning block 42, and an inner side surface of the positioning block 42 abuts against an outer side surface of the movable connecting plate 20. During assembly, the end part of the clamp pull rod 40, which is far away from the positioning block 42, sequentially passes through the movable connecting plate 20, the air passing plate 13, the clamp body 10, the positioning core seat 11 and the floating positioning core 12, and then the pressing block 60 is connected with the clamp pull rod 40 through the movable pin 63. When the inner side surface of the positioning block 42 abuts against the outer side surface of the movable connecting plate 20, the length of the portion of the clamp pull rod 40 protruding out of the floating positioning core 12 is longest. The U-shaped notch 21 is provided for the clamp pull rod 40 to pass through, and the positioning block 42 is provided for the movable connecting plate 20 and the clamp pull rod 40 to have a connection relationship.

Referring to fig. 2, in some embodiments, the positioning block 42 is cylindrical, and any two opposite surfaces of the positioning block 42 are cut into planes 421, and a distance between the two planes 421 is smaller than a groove width of the U-shaped slot 21. During processing, the opposite surfaces of the cylindrical positioning block 42 are cut to form a plane 421, so that the clamp pull rod 40 can sequentially penetrate through the floating positioning core 12, the positioning core seat 11, the clamp body 10, the air passing plate 13 and the movable connecting plate 20, and in order to limit the clamp pull rod 40, the clamp pull rod 40 is rotated, as the surface, which is not cut by the positioning block 42, of the arc surfaces 422 is the arc surfaces 422, the distance between the two arc surfaces 422 is greater than the groove width of the U-shaped notch 21, and when the clamp pull rod 40 is rotated, the two arc surfaces 422 can be clamped on the movable connecting plate 20 when crossing the U-shaped notch 21. The above arrangement provides two ways of assembly to accommodate the position of the machine tool.

Referring to fig. 2 and 3, in some embodiments, the machine tool pull rod 30 is sleeved with a travel cushion block 31 and a lock nut 32, and two sides of the travel cushion block 31 are respectively abutted against the outer side of the movable connecting plate 20 and the inner side of the lock nut 32. In practical application, a limiting block is arranged on the machine tool, and when the limiting block is abutted with the lock nut 32, the clamp pull rod 40 is indicated to move leftwards in place, namely the pressing block 60 clamps the piston ring 100; when the stroke pad 31 abuts against the movable connecting plate 20, it is explained that the clamp pull rod 40 moves to the right (the length of the portion of the clamp pull rod 40 protruding out of the floating positioning core 12 is longest), that is, the clamping of the piston ring 100 is released.

In summary, according to the utility model, the fixture body 10 for connecting with a machine tool, the floating positioning core 12 for limiting the piston ring 100, the machine tool pull rod 30 for pulling the movable connecting plate 20 and the fixture pull rod 40 to axially reciprocate, and the fixture pull rod 40 and the lug 50 for enabling the pressing block 60 to move towards the piston ring 100 or move away from the piston ring 100 are arranged, so that the quick clamping of a workpiece is realized, and the clamping efficiency of the workpiece is improved; the structure is simple, the design is ingenious, and the industrial popularization and application are facilitated. A latch, a movable pin 63 and a waist-shaped hole 62 are arranged to realize the movement of the pressing block 60. The pressing nozzle 64 is provided for improving the clamping effect of the pressing block 60 on the piston ring 100. The support protrusions 121 are provided for supporting the piston ring 100 and for restricting the placement position of the piston ring 100. Defines the outer diameter of the floating positioning core 12 for preliminary centering of the piston ring 100. The number of the clamp pull rods 40 is limited so that the pressing blocks 60 clamp the piston ring 100 in the form of an equilateral triangle. The U-shaped slot 21 is provided for the clamp lever 40 to pass through and the locating block 42 is provided for the movable connecting plate 20 and the clamp lever 40 to be in a connecting relationship. The opposite face of the positioning block 42 is provided with a plane 421 for providing two assembly modes. A lock nut 32 is provided for securing the machine tool tie bar 30 and the movable connection plate 20. The stroke spacer 31 is provided for limiting the movement stroke of the clamp pull rod 40.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It will be understood that equivalents and modifications will occur to those skilled in the art based on the present utility model and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model.

Claims

1. The turning clamp for the piston ring is characterized by comprising a clamp body, a positioning core seat connected with the side surface of the clamp body, a floating positioning core connected with the positioning core seat and used for limiting the piston ring, an air passing plate connected with the other side surface of the clamp body, a movable connecting plate arranged on one side of the air passing plate and a machine tool pull rod arranged in the center of the movable connecting plate; the movable connecting plate is connected with a clamp pull rod, the clamp pull rod sequentially passes through the air plate, the clamp body, the positioning core seat and the floating positioning core, a lug is arranged on the floating positioning core, a pressing block is connected between the lug and the end part of the clamp pull rod, two ends of the pressing block are respectively connected with the lug and the end part of the clamp pull rod in a rotating way, and the machine tool pull rod is used for pulling the clamp pull rod to do axial movement.

2. The turning jig for a piston ring according to claim 1, wherein the lug is provided with a first through hole, the ends of the jig tie rod are each provided with a second through hole, one end of the press block is provided with a third through hole, and the other end of the press block is provided with a waist-shaped hole extending in the length direction thereof; the first through hole and the third through hole are penetrated by the same bolt; the second through hole and the waist-shaped hole are penetrated by the same movable pin.

3. The turning jig for a piston ring according to claim 1, wherein a pressing nozzle is provided on an end face of the pressing block remote from the lug; the pressing nozzle extends towards the direction of the piston ring and is used for abutting against the groove bottom of the groove on the piston ring.

4. A turning jig for a piston ring according to claim 3, wherein a plurality of support projections are provided on the outer peripheral wall of the floating retainer core at equal angles, each of the side surfaces of the support projections being adapted to abut against the inner side surface of the piston ring.

5. A turning jig for a piston ring according to claim 3, wherein the outer diameter of the floating retainer core end face is adapted to the inner diameter of the piston ring.

6. The turning jig for a piston ring according to claim 1, wherein the jig tie rods are provided in three at equal angles, and the lugs and the press blocks are provided in three correspondingly.

7. The turning clamp for a piston ring according to claim 1, wherein the movable connecting plate is provided with a U-shaped notch with an outward opening, the tail end of the clamp pull rod is connected with a positioning block, and the inner side surface of the positioning block is abutted with the outer side surface of the movable connecting plate.

8. The turning jig for a piston ring according to claim 7, wherein the positioning block is cylindrical, and any two opposite faces of the positioning block are flat faces, and a distance between the two flat faces is smaller than a groove width of the U-shaped notch.

9. The turning clamp for piston rings according to claim 1, wherein a stroke cushion block and a lock nut are sleeved on the machine tool pull rod, and two side surfaces of the stroke cushion block are respectively abutted with the outer side surface of the movable connecting plate and the inner side surface of the lock nut.