CN210677821U

CN210677821U - Piston pin hole processing and positioning device

Info

Publication number: CN210677821U
Application number: CN201921208376.6U
Authority: CN
Inventors: 曲鹏
Original assignee: Dalian Hellon Keben Piston Co ltd
Current assignee: Dalian Hellon Keben Piston Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-05
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a piston pin hole processing positioner, including base (1), its characterized in that: be provided with V type iron (2) on base (1), go up through bolt fixedly connected with locating piece (3) on V type iron (2), be provided with locating pin (4) on locating piece (3), set up two screw holes along its length direction distribution on V type iron (2), screw hole female connection has positioning screw (5), still cup jointed position sleeve (6) and with positioning pressure plate (8) of piston (7) tip contact on positioning screw (5), base (1) on still be provided with two sets and tie up the mechanism, tie up and tie up the mechanism and constitute by first subassembly and the second subassembly that are located V type iron (2) both sides and symmetric distribution respectively and chain (9) of connection between them.

Description

Piston pin hole processing and positioning device

Technical Field

The utility model relates to a frock clamp field, especially a piston pin hole processing positioner.

Background

The piston is a core component of the engine and is a main stress accessory when bearing the explosion pressure in the cylinder, and the service life and the safety of the engine are directly influenced by the quality of the piston. Therefore, the machining size and form and position tolerance of the cylinder sleeve are strictly controlled in the piston machining process. When a pin hole is required to be machined in a piston, the outer circle of the head of the piston is mostly positioned in a traditional compression mode, the side wall of the ring groove is compressed or the end face of the bottom of the ring groove is compressed, the compression function can be realized by the structure for compressing the side wall of the ring groove, but the aluminum piston is low in hardness and easy to damage the side wall of the ring groove, and the ring groove is a very critical part, so that once the side wall of the ring groove is damaged, great problem hidden danger is caused to the use of the piston; the structure is felt to realize the function of compressing tightly by compressing tightly the piston bottom terminal surface, but causes skirt portion excircle to warp easily, and the pinhole form and position tolerance and the size easily surpass after the processing. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

Disclosure of Invention

The utility model relates to a solve the above-mentioned not enough that prior art exists, provide a simple operation, simple structure, repeated positioning accuracy is high, and stability is strong, to the piston ring groove not damaged behind the clamping to guarantee to process the qualified positioner of back pinhole form and position tolerance and size.

The technical solution of the utility model is that: the utility model provides a piston pin hole processing positioner, includes base 1, its characterized in that: the base 1 is provided with a V-shaped iron 2, the V-shaped iron 2 is fixedly connected with a positioning block 3 through a bolt, the positioning block 3 is provided with a positioning pin 4, the V-shaped iron 2 is provided with two threaded holes distributed along the length direction of the V-shaped iron, the threaded holes are internally threaded with positioning screws 5, the positioning screws 5 are also sleeved with a positioning sleeve 6 and a positioning pressing plate 8 contacted with the end part of a piston 7,

the base 1 is also provided with two sets of binding mechanisms which are composed of a first component and a second component which are respectively positioned at two sides of the V-shaped iron 2 and are symmetrically distributed and a chain 9 connected between the first component and the second component,

the first component comprises a first support 10 fixedly connected to the base 1, a connecting sleeve 11 is rotatably connected to the first support 10, the top of the connecting sleeve 11 is in threaded connection with an adjusting bolt 12, a locking nut 13 is further in threaded connection with the adjusting bolt 12, the top end of the locking nut 13 is hinged with one end of the chain 9,

the second assembly comprises a second support 21 fixedly connected to the base 1, the second support 21 is hinged to one end of the clamping pressure plate 14 through a rotating shaft, the other end of the clamping pressure plate 14 is rotatably connected with the bottom end of the connecting hook 15, the hook head part at the top end of the connecting hook 15 is hooked at the end part of the chain 9, the second assembly further comprises a third support 16 fixedly connected to the base 1, an eccentric wheel 17 is rotatably supported on the third support 16, a handle 18 is arranged on the eccentric wheel 17, a loosening part 19 and a pressing part 20 are arranged at the bottom of the eccentric wheel 17, and when the pressing part 20 is in contact with the top end face of the clamping pressure plate 14, the clamping pressure plate 14 is in a horizontal state.

Compared with the prior art, the utility model, have following advantage:

this kind of structural style's piston pin hole processing positioner, its simple structure, design benefit, rationally distributed. The special structure is designed aiming at the problem that a positioning device used in the traditional piston pin hole processing is exposed in the using process. It utilizes the locating pin of establishing on V type iron to fix a position the rotation direction of piston, utilize the locating plate to fix a position the fore-and-aft direction of piston, utilize and tie up and fix a position its circumference at the outlying chain of piston, this kind of positioner's simple operation, moreover, the structure is simple, repeated positioning accuracy is high, stability is strong, to the piston ring groove not damaged after the clamping, pin hole form and position tolerance and size are qualified after having guaranteed processing, and through a clamping, can realize the processing at a plurality of positions such as piston pin hole, the oil drain, keep off the circle groove, the internal distance, the head hole, the pilot hole nest, show and improve machining efficiency and stability of quality. Therefore, the method has multiple advantages, is particularly suitable for popularization and application in the field, and has very wide market prospect.

Drawings

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a side view of an embodiment of the invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1 and 2: a piston pin hole processing and positioning device comprises a base 1, wherein a V-shaped iron 2 is arranged on the base 1, a positioning block 3 is fixedly connected to the V-shaped iron 2 through a bolt, a positioning pin 4 is arranged on the positioning block 3, two threaded holes distributed along the length direction of the V-shaped iron 2 are formed in the V-shaped iron, a positioning screw rod 5 is connected to the threaded holes in an internal thread manner, a positioning sleeve 6 and a positioning pressing plate 8 contacted with the end part of a piston 7 are sleeved on the positioning screw rod 5,

The utility model discloses piston pin hole processing positioner's working process as follows: a workpiece (piston) to be positioned and clamped is placed on the V-shaped iron 2, a positioning pin 4 is inserted into a positioning pin hole in the piston, positioning screws 5 are respectively in threaded connection with the front end and the rear end of the V-shaped iron 2, a positioning sleeve 6 with a proper length is selected according to the type and the specification of the piston, and the piston is tightly pressed by a positioning pressing plate 8 under the action of the positioning screws 5; two positioning pressing plates 8 sleeved on the two sets of positioning screws 5 position the piston in the front and back directions;

then, the free end of the chain 9 in the binding mechanism is connected with the hook head part of the connecting hook 15, the eccentric wheel 17 is driven to rotate through the handle 18, the pressing part 20 at the bottom end of the eccentric wheel 17 rotates to be in contact with the clamping pressing plate 14, the clamping pressing plate 14 is pressed to be in a horizontal state, at the moment, the connecting hook 15 can tighten the chain 9, and the chain 9 tightens the piston in the circumferential direction;

when the adjusting bolt is used, the relative position of the adjusting bolt 12 on the connecting sleeve 11 can be adjusted according to the specification and the size of the piston, and after the adjusting is proper (the chain 9 can not generate excessive pressure on the piston and can also be fixed), the adjusting bolt 12 is tightened by using the locking nut 13;

after the piston is processed, the handle 18 is pulled reversely, the slack part 19 is rotated to the upper part of the clamping pressure plate 14, and after the clamping pressure plate 14 is lifted upwards, the chain 9 returns to the slack state again, so that the connecting hook 15 and the chain 9 can be loosened; then the two positioning screws 5 are respectively disassembled from the V-shaped iron 2, and the piston can be taken down from the V-shaped iron 2.

Claims

1. The utility model provides a piston pin hole processing positioner, includes base (1), its characterized in that: the V-shaped iron (2) is arranged on the base (1), the positioning block (3) is fixedly connected onto the V-shaped iron (2) through bolts, the positioning block (3) is provided with a positioning pin (4), the V-shaped iron (2) is provided with two threaded holes distributed along the length direction of the V-shaped iron, the threaded holes are internally threaded with positioning screws (5), the positioning screws (5) are also sleeved with positioning sleeves (6) and positioning pressing plates (8) contacted with the end parts of the pistons (7),

the base (1) is also provided with two sets of binding mechanisms, each binding mechanism consists of a first component and a second component which are respectively positioned at two sides of the V-shaped iron (2) and are symmetrically distributed, and a chain (9) connected between the first component and the second component,

the first component comprises a first support (10) fixedly connected to the base (1), a connecting sleeve (11) is rotatably connected to the first support (10), the top of the connecting sleeve (11) is in threaded connection with an adjusting bolt (12), a locking nut (13) is further in threaded connection with the adjusting bolt (12), the top end of the locking nut (13) is hinged to one end of the chain (9),

the second assembly comprises a second support (21) fixedly connected to the base (1), the second support (21) is hinged to one end of the clamping pressing plate (14) through a rotating shaft, the other end of the clamping pressing plate (14) is rotatably connected with the bottom end of the connecting hook (15), the hook head at the top end of the connecting hook (15) is hooked at the end of the chain (9), the second assembly further comprises a third support (16) fixedly connected to the base (1), an eccentric wheel (17) is rotatably supported on the third support (16), a handle (18) is arranged on the eccentric wheel (17), a loosening part (19) and a pressing part (20) are arranged at the bottom of the eccentric wheel (17), and when the pressing part (20) is in contact with the top end face of the clamping pressing plate (14), the clamping pressing plate (14) is in a horizontal state.