Positioning tool for aluminum alloy piston pin hole machining

Abstract

The utility model belongs to the technical field of aluminum alloy piston pin hole machining, and particularly relates to a positioning tool for aluminum alloy piston pin hole machining, which comprises a tool table, an aluminum alloy piston is placed at the upper end of the tool table, an ejector rod is fixedly connected to the left side of the upper end of the tool table, and a cross beam is fixedly connected to the upper end of the ejector rod. The cross beam is rotationally connected with a pressing rod through threads, the upper end of the pressing rod is fixedly connected with an adjusting block, the tool table is provided with a positioning mechanism and a mounting mechanism, and the lower end of the pressing rod is fixedly connected with a pressing block. The upper end of the sliding rod is connected with the limiting piece, the lower end of the sliding rod is connected with the ejector block, the limiting piece is conveniently pushed to move up and down when the sliding rod moves up and down, and therefore the interiors of aluminum alloy pistons of different heights are conveniently limited, the threaded rod is connected with the push block, the sliding rod is conveniently adjusted at the lower end of the tool table, and the sliding rod can move up and down and be limited; and defects caused by outer side limiting of the aluminum alloy piston are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum alloy piston pin hole processing technical field, specifically for a kind of positioning tool for aluminum alloy piston pin hole processing. BACKGROUND

[0002] Piston is the reciprocating machine in the cylinder block of automobile engine. The basic structure of piston can be divided into top, head and skirt. Piston top is the main part of combustion chamber, and its shape is related to the selected combustion chamber form. Flat-top piston is often used in gasoline engine, and its advantage is small heat absorption area. The top of diesel engine piston often has various pits, and its specific shape, position and size must be adapted to the requirements of diesel engine mixture formation and combustion. When aluminum alloy piston pin hole is processed, aluminum alloy piston needs to be positioned on positioning tool.

[0003] The utility model discloses a ball pin split pin hole processing frock, the ball pin split pin hole processing frock includes shell, lower baffle, upper baffle and drive mechanism, the upper baffle and lower baffle are sequentially arranged in the top of the shell from top to bottom, the cavity is formed in the shell, the drive mechanism is located in the cavity to drive the lower baffle moves in vertical direction, the top of the lower baffle is recessed and forms first V-shaped groove, the top of the upper baffle is recessed and forms second V-shaped groove, the upper baffle is formed with processing hole and the processing hole extends from the top of the upper baffle to the groove bottom of the second V-shaped groove. The ball pin split pin hole processing frock can process different specifications of ball pin, greatly improves production efficiency and reduces production cost.

[0004] At present, when aluminum alloy piston is positioned on positioning tool, it is mostly positioned on the external wiring of aluminum alloy piston. The positioning device is easy to block aluminum alloy piston during positioning, thereby affecting pin hole processing of aluminum alloy piston. Moreover, the inside of aluminum alloy piston is hollow, and pin hole processing thrust is also easy to extrude and damage aluminum alloy piston. Meanwhile, when positioning tool is installed on fixed object, it is mostly positioned by multiple bolts, so that it is more troublesome to assemble and disassemble. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of positioning tool for aluminum alloy piston pin hole processing, solves the positioning of aluminum alloy piston and the installation of positioning tool.

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of positioning tool for aluminum alloy piston pin hole processing, including tooling table, the upper end of the tooling table is placed with aluminum alloy piston, the upper end left side of the tooling table is fixedly connected with top rod, the upper end of the top rod is fixedly connected with crossbeam, the crossbeam is rotatably connected with pressing rod by screw thread, the upper end of the pressing rod is fixedly connected with adjusting block, the tooling table is provided with positioning mechanism, the tooling table is provided with mounting mechanism, the lower end of the pressing rod is fixedly connected with pressing block, the lower end of the pressing block is fixedly connected with antiskid pad, and the antiskid pad is tightly attached to the upper end of the aluminum alloy piston under the pressing of the pressing block, the lower end of the tooling table is fixedly connected with vertical plate respectively on left and right sides, and the lower end of the vertical plate is fixedly connected with bottom plate.

[0007] Preferably, the positioning mechanism includes a through slot, the tooling table is provided with a through slot, the inner upper end of the through slot is fixedly connected with an anti-dropping block, and the anti-dropping block is slidably connected with a sliding rod.

[0008] Preferably, the lower end of the sliding rod is fixedly connected with a top block, the upper end of the sliding rod is fixedly connected with a limiting piece, the limiting piece is provided with a pin hole slot, the lower end of the tooling table is fixedly connected with a lifting sleeve, and the inner lower end of the lifting sleeve is fixedly connected with a stop block.

[0009] Preferably, the stop block is rotatably connected with a threaded rod by screw thread, the upper end of the threaded rod is fixedly connected with a push block, the push block is tightly attached to the lower end of the top block, and the lower end of the threaded rod is fixedly connected with a handle.

[0010] Preferably, the mounting mechanism includes a groove, the left and right sides of the tooling table are respectively provided with a groove, the left and right sides of the tooling table are respectively fixedly connected with an upper ear plate, and the left and right sides of the tooling table are respectively fixedly connected with a lower ear plate.

[0011] Preferably, the lower ear plate is provided with a storage groove, and the inside of the storage groove is rotatably connected with an extrusion block.

[0012] Preferably, the lower end of the extrusion block is fixedly connected with a limiting rod, and the lower end of the limiting rod is fixedly connected with an adjusting handle.

[0013] Compared with the prior art, the utility model has the beneficial effects as follows:

[0014] 1、The upper end of the sliding rod is connected with the limiting piece, and the lower end is connected with the top block, so that the sliding rod is pushed to move up and down to facilitate the limiting piece to move up and down when moving up and down, thereby facilitating the limiting of the inside of aluminum alloy piston of different heights, and the threaded rod is connected with the push block, so that the sliding rod can move up and down and be limited by adjusting the sliding rod at the lower end of the tooling table, to avoid the disadvantages brought by the outside limiting of aluminum alloy piston.

[0015] 2, the utility model discloses the setting through the recess, it is convenient for the installation of limiting, through the upper ear plate and lower ear plate upper and lower clamping installation, then the limiting rod extrusion extrusion block, make extrusion block extrusion limiting external installation, increase installation stability, it is convenient for frock platform installation limiting, avoid the inconvenience that multiple bolts install bring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure perspective drawing of the utility model;

[0017] Figure 2 It is the overall structure partial section view of the utility model;

[0018] Figure 3 It is the local structure perspective of the utility model Figure 1 ;

[0019] Figure 4 It is the local structure perspective of the utility model Figure 2 .

[0020] In the drawing: 1, frock platform;2, aluminum alloy piston;3, top rod;4, crossbeam;5, pressure rod;6, adjusting block;7, positioning mechanism;8, installation mechanism;9, pressure block;10, non-slip pad;11, stand plate;12, bottom plate;71, through slot;72, anti-dropping block;73, sliding rod;74, top block;75, limiting piece;76, pin hole groove;77, hanging sleeve;78, stop block;79, threaded rod;710, push block;711, handle;81, recess;82, upper ear plate;83, lower ear plate;84, storage groove;85, extrusion block;86, limiting rod;87, adjusting handle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4A positioning fixture for machining aluminum alloy piston pin holes includes a fixture table 1, an aluminum alloy piston 2 placed on the upper end of the fixture table 1, a push rod 3 fixedly connected to the upper left side of the fixture table 1, a crossbeam 4 fixedly connected to the upper end of the push rod 3, a pressure rod 5 rotatably connected to the crossbeam 4 via a thread, an adjusting block 6 fixedly connected to the upper end of the pressure rod 5, a positioning mechanism 7 provided on the fixture table 1, an installation mechanism 8 provided on the fixture table 1, a pressure block 9 fixedly connected to the lower end of the pressure rod 5, an anti-slip pad 10 fixedly connected to the lower end of the pressure block 9, the pressure block 9 presses down on the anti-slip pad 10 to fit tightly against the upper end of the aluminum alloy piston 2, and upright plates 11 fixedly connected to the left and right sides of the lower end of the fixture table 1, and a base plate 12 fixedly connected to the lower end of the upright plates 11.

[0023] Please see Figure 1 , Figure 2 , Figure 4 The positioning mechanism 7 includes a through groove 71. The tooling table 1 has a through groove 71. An anti-detachment block 72 is fixedly connected to the upper end of the through groove 71. A slide rod 73 is slidably connected to the anti-detachment block 72. A top block 74 is fixedly connected to the lower end of the slide rod 73. A limiting member 75 is fixedly connected to the upper end of the slide rod 73. The limiting member 75 has a pin hole groove 76. A hanging sleeve 77 is fixedly connected to the lower end of the tooling table 1. A stop block 78 is fixedly connected to the lower end of the hanging sleeve 77. A threaded rod 79 is rotatably connected to the stop block 78 by a thread. A push block 710 is fixedly connected to the upper end of the threaded rod 79. The push block 710 is tightly attached to the lower end of the top block 74. A handle 711 is fixedly connected to the lower end of the threaded rod 79.

[0024] Please see Figure 1 , Figure 2 , Figure 3 The installation mechanism 8 includes a groove 81. Grooves 81 are respectively provided on the left and right sides of the tooling table 1. Upper ear plates 82 are respectively fixedly connected to the left and right sides of the tooling table 1. Lower ear plates 83 are respectively fixedly connected to the left and right sides of the tooling table 1. A storage groove 84 is provided on the lower ear plate 83. A pressing block 85 is rotatably connected inside the storage groove 84. A limit rod 86 is fixedly connected to the lower end of the pressing block 85. An adjustment handle 87 is fixedly connected to the lower end of the limit rod 86.

[0025] The specific implementation process of this utility model is as follows: Rotating the handle 711 causes the threaded rod 79 to move upward, thereby driving the push block 710 to move upward. Then, the push block 710 pushes the push block 74 upward, causing the slide rod 73 to move upward, thereby causing the limiting member 75 to move upward. When the limiting member 75 moves upward to a suitable position, it can then slide and engage with the aluminum alloy piston 2. Figures 1-2 As shown, then rotate the adjusting block 6 so that the adjusting block 6 drives the pressure rod 5 to move downward. The pressure rod 5 presses down the pressure block 9 so that the pressure block 9 presses down the anti-slip pad 10 to stick tightly to the upper end of the aluminum alloy piston 2, thus fixing the upper and lower limits of the aluminum alloy piston 2.

[0026] When the tooling table 1 needs to be installed, the outer installation plate is slid and clamped, so that the outer installation plate is slid and clamped in the inside of the groove 81, and is limited by the upper and lower blocking of the upper ear plate 82 and the lower ear plate 83, then the adjusting handle 87 is rotated, so that the limiting rod 86 drives the extrusion block 85 to move upward, thereby limiting and fixing the outer installation plate.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for aluminum alloy piston pin bore machining, comprising a fixture table (1), characterized in that: The upper end of the tooling table (1) is placed with an aluminum alloy piston (2), the upper end of the tooling table (1) is fixedly connected with a top rod (3), the upper end of the top rod (3) is fixedly connected with a cross beam (4), the cross beam (4) is rotatably connected with a pressing rod (5) through threads, the upper end of the pressing rod (5) is fixedly connected with an adjusting block (6), the tooling table (1) is provided with a positioning mechanism (7), the tooling table (1) is provided with a mounting mechanism (8), the lower end of the pressing rod (5) is fixedly connected with a pressing block (9), the lower end of the pressing block (9) is fixedly connected with a non-slip pad (10), the pressing block (9) presses the non-slip pad (10) to tightly adhere to the upper end of the aluminum alloy piston (2), the lower ends of the left and right sides of the tooling table (1) are respectively fixedly connected with vertical plates (11), and the lower ends of the vertical plates (11) are fixedly connected with bottom plates (12).

2. The positioning fixture for machining of aluminum alloy piston pin bore according to claim 1, characterized in that: The positioning mechanism (7) comprises a through slot (71), the tooling table (1) is provided with the through slot (71), the inner upper end of the through slot (71) is fixedly connected with an anti-dropping block (72), and the anti-dropping block (72) is slidably connected with a sliding rod (73).

3. A positioning fixture for aluminum alloy piston pin bore machining according to claim 2, characterized in that: The lower end of the sliding rod (73) is fixedly connected with a top block (74), the upper end of the sliding rod (73) is fixedly connected with a limiting piece (75), the limiting piece (75) is provided with a pin hole groove (76), the lower end of the tooling table (1) is fixedly connected with a lifting sleeve (77), and the inner lower end of the lifting sleeve (77) is fixedly connected with a stop block (78).

4. The positioning fixture for machining of aluminum alloy piston pin bore according to claim 3, characterized in that: The stop block (78) is rotatably connected with a threaded rod (79) through threads, the upper end of the threaded rod (79) is fixedly connected with a push block (710), the push block (710) tightly adheres to the lower end of the top block (74), and the lower end of the threaded rod (79) is fixedly connected with a handle (711).

5. The positioning fixture for machining of aluminum alloy piston pin bore according to claim 1, characterized in that: The mounting mechanism (8) comprises a recess (81), the left and right sides of the tooling table (1) are respectively provided with the recess (81), the left and right sides of the tooling table (1) are respectively fixedly connected with upper ear plates (82), and the left and right sides of the tooling table (1) are respectively fixedly connected with lower ear plates (83).

6. A positioning fixture for aluminum alloy piston pin bore machining according to claim 5, characterized in that: The lower ear plate (83) is provided with a storage groove (84), and the inner end of the storage groove (84) is rotatably connected with an extrusion block (85).

7. A positioning fixture for aluminum alloy piston pin bore machining according to claim 6, characterized in that: The lower end of the extrusion block (85) is fixedly connected with a limiting rod (86), and the lower end of the limiting rod (86) is fixedly connected with an adjusting handle (87).

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