Positioning hole machining device for piston salt core

Abstract

The utility model relates to the technical field of piston salt cores, and discloses a piston salt core positioning hole machining device which comprises a shell, the interior of the shell is rotationally connected with one end of a two-way threaded rod, and the thread position of the two-way threaded rod is in threaded connection with the thread hole position of a threaded sleeve. The side face of the threaded sleeve is fixedly connected with one end of a connecting rod, the other end of the connecting rod is fixedly connected with the side face of a clamping plate, the interior of the shell is fixedly connected with the side face of an air cylinder, the piston end of the air cylinder is fixedly connected with the side face of a motor, and the output end of the motor is fixedly connected with the side face of a drill bit. During use, the salt core can be fixed through the two sets of clamping plates, extra manpower is not needed to fix the salt core during punching, great convenience is achieved, in the fixing process, the salt core can be positioned, and it is guaranteed that a positioning hole is formed in the middle of the salt core.

Description

Technical Field

[0001] The utility model relates to the technical field of piston salt cores, in particular to a positioning hole processing device for piston salt cores. Background Art

[0002] A salt core aluminum piston is a piston that uses a salt core to form its internal cooling oil channel during the aluminum piston casting process. Generally, it is placed in the mold during casting. After molding, the salt core is directly washed away with water to form a cooling oil channel in the aluminum piston.

[0003] When the salt core piston is placed in the mold, its position determines the position of the cooling oil channel in the formed aluminum piston. When placed, it needs to be fixed through the positioning hole. When opening the positioning hole, a positioning hole processing device is required.

[0004] However, the positioning hole processing devices currently on the market do not have a fixing mechanism. When performing drilling operations, the position of the salt core needs to be manually fixed, which is very inconvenient. Moreover, when not in use, the drill bit in the drilling device is exposed to the outside. When the drilling device falls or is hit, the drill bit is easily damaged. Summary of the Invention

[0005] The purpose of the utility model is to provide a positioning hole processing device for a piston salt core to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning hole processing device for a piston salt core, comprising: a housing, the interior of the housing being rotatably connected to one end of a bidirectional threaded rod, the threads of the bidirectional threaded rod being threadedly connected to the screw holes of a threaded sleeve, the side surface of the threaded sleeve being fixedly connected to one end of a connecting rod, the other end of the connecting rod being fixedly connected to the side surface of a splint, the interior of the housing being fixedly connected to the side surface of a cylinder, the piston end of the cylinder being fixedly connected to the side surface of a motor, the output end of the motor being fixedly connected to the side surface of a drill bit, and a protective mechanism being provided inside the housing, the protective mechanism comprising:

[0007] a telescopic rod, wherein the middle portion of the telescopic rod is hingedly connected to the outer wall of the fixed shaft, the two ends of the fixed shaft are fixedly connected to the interior of the housing, the end of the telescopic rod is hingedly connected to one end of the L-rod, and the other end of the L-rod is fixedly connected to the side of the baffle;

[0008] An extrusion rod, the end of which is fixedly connected to the side surface of the threaded sleeve.

[0009] Preferably, a torsion spring is provided at the hinge between the telescopic rod and the fixed shaft so that the telescopic rod can be reset.

[0010] Preferably, the number of the threaded sleeves, connecting rods and splints is set to two groups, and the two groups of threaded sleeves, connecting rods and splints are symmetrically distributed on both sides of the bidirectional threaded rod, so that the splints have a positioning effect.

[0011] Preferably, the side surfaces of the splint are provided with anti-slip grooves to improve the fixing effect of the splint.

[0012] Preferably, a handle is provided on the side of the shell to make the shell convenient to hold.

[0013] Preferably, the other end of the bidirectional threaded rod is fixedly connected to the side of the turntable, so that the bidirectional threaded rod is easy to rotate.

[0014] Compared with the prior art, the present invention provides a device for machining positioning holes for piston salt cores, which has the following beneficial effects:

[0015] 1. The positioning hole processing device for the piston salt core can fix the salt core through two sets of clamping plates when in use, so that no additional manpower is required to fix the salt core when punching, which is very convenient. In the process of fixing, the salt core can be positioned to ensure that the positioning hole is opened in the middle of the salt core.

[0016] 2. The positioning hole processing device for the piston salt core can protect the drill bit through a protective mechanism when not in use, thereby avoiding the drill bit being exposed when not in use and the drill bit being easily damaged when the drilling device falls or is hit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the top-sectional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the cross section of the telescopic rod of the utility model.

[0020] In the figure: 1. Housing; 2. Bidirectional threaded rod; 3. Threaded sleeve; 4. Connecting rod; 5. Clamp; 6. Turntable; 7. Protective mechanism; 8. Cylinder; 9. Motor; 10. Drill bit; 11. Handle; 701. Telescopic rod; 702. Fixed shaft; 703. L rod; 704. Baffle; 705. Extrusion rod. DETAILED DESCRIPTION

[0021] like Figure 1-3As shown, the utility model provides a technical solution: a positioning hole processing device for a piston salt core, comprising: a shell 1, the interior of the shell 1 is rotatably connected to one end of a bidirectional threaded rod 2, the thread of the bidirectional threaded rod 2 is threadedly connected to the screw hole of a threaded sleeve 3, the side of the threaded sleeve 3 is fixedly connected to one end of a connecting rod 4, the other end of the connecting rod 4 is fixedly connected to the side of a splint 5, the interior of the shell 1 is fixedly connected to the side of a cylinder 8, the piston end of the cylinder 8 is fixedly connected to the side of a motor 9, the output end of the motor 9 is fixedly connected to the side of a drill bit 10, and a protective mechanism 7 is provided inside the shell 1, the protective mechanism 7 comprises: a telescopic rod 701, an extrusion rod 705, the middle part of the telescopic rod 701 is hinged to the outer wall of the fixed shaft 702, the two ends of the fixed shaft 702 are fixedly connected to the inside of the shell 1, the end of the telescopic rod 701 is hinged to one end of the L rod 703, the other end of the L rod 703 is fixedly connected to the side of the baffle 704, and the end of the extrusion rod 705 is fixedly connected to the side of the threaded sleeve 3. When in use, the salt core is placed between the two groups of splints 5, and the turntable 6 is rotated to rotate the two-way threaded rod 2, driving the two groups of threaded sleeves 3 to approach each other, driving the two groups of connecting rods 4 to approach each other, and making the two groups of splints 5 approach each other to clamp the salt core. The salt core is fixed by the two groups of splints 5 to make the punching When the salt core is fixed, no additional manpower is required, which is very convenient. In the process of fixing, the salt core can be positioned to ensure that the positioning hole is opened in the middle of the salt core. At the same time, the squeezing rod 705 no longer squeezes the end of the telescopic rod 701. Under the action of the torsion spring, the telescopic rod 701 rotates. Since the baffle 704 is slidably connected to the shell 1, the baffle 704 can only move laterally, so that the L rod 703 can only move laterally. Under the rotation of the telescopic rod 701, the lateral movement of the L rod 703 drives the lateral movement of the baffle 704 and no longer blocks the drill bit 10. At this time, the motor 9 is started to rotate the drill bit 10, and the cylinder 8 is started to drive the drill bit 10 to advance. During drilling operation, when not in use, the turntable 6 is rotated in the opposite direction to rotate the bidirectional threaded rod 2 in the opposite direction, driving the two sets of threaded sleeves 3 away from each other, driving the two sets of connecting rods 4 away from each other, and making the two sets of clamps 5 away from each other, loosening the clamping. At the same time, the squeezing rod 705 squeezes one end of the telescopic rod 701, causing the telescopic rod 701 to rotate while stretching the torsion spring, driving the L rod 703 to move laterally and driving the baffle 704 to move laterally, covering the position of the drill bit 10. The drill bit 10 is protected by the protective mechanism 7, avoiding the drill bit 10 being exposed when not in use, and the drill bit 10 being easily damaged when the drilling device falls or is hit.

[0022] In addition, in order to allow the telescopic rod 701 to be reset, a torsion spring is provided at the hinge between the telescopic rod 701 and the fixed shaft 702. In order to enable the splint 5 to have a positioning effect, the number of the threaded sleeve 3, the connecting rod 4, and the splint 5 is set to two groups, and the two groups of threaded sleeves 3, the connecting rod 4, and the splint 5 are symmetrically distributed on both sides of the bidirectional threaded rod 2. In order to achieve a better fixing effect of the splint 5, the side of the splint 5 is provided with anti-slip grooves. In order to make the shell 1 convenient to hold, a handle 11 is provided on the side of the shell 1. In order to facilitate the rotation of the bidirectional threaded rod 2, the other end of the bidirectional threaded rod 2 is fixedly connected to the side of the turntable 6.

[0023] Working principle: When in use, place the salt core between the two groups of splints 5, rotate the turntable 6, rotate the bidirectional threaded rod 2, drive the two groups of threaded sleeves 3 closer to each other, drive the two groups of connecting rods 4 closer to each other, and make the two groups of splints 5 closer to each other to clamp the salt core. At the same time, the squeezing rod 705 no longer squeezes the end of the telescopic rod 701. Under the action of the torsion spring, the telescopic rod 701 rotates. Since the baffle 704 is slidably connected to the shell 1, the baffle 704 can only move laterally, so that the L rod 703 can only move laterally. Under the rotation of the telescopic rod 701, the L rod 703 moves laterally, driving the baffle 70 4 The lateral movement no longer blocks the drill bit 10. At this time, the motor 9 is started to rotate the drill bit 10, and the cylinder 8 is started to drive the drill bit 10 forward to perform the drilling operation. When not in use, the turntable 6 is rotated in the opposite direction to rotate the bidirectional threaded rod 2 in the opposite direction, driving the two sets of threaded sleeves 3 away from each other, driving the two sets of connecting rods 4 away from each other, and driving the two sets of clamping plates 5 away from each other to release the clamping. At the same time, the squeezing rod 705 squeezes one end of the telescopic rod 701, causing the telescopic rod 701 to rotate while stretching the torsion spring, driving the L rod 703 to move horizontally and the baffle 704 to move horizontally, thereby blocking the position of the drill bit 10.

[0024] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A positioning hole processing device for a piston salt core, comprising: The housing (1) is characterized in that: the interior of the housing (1) is rotatably connected to one end of a bidirectional threaded rod (2), the thread of the bidirectional threaded rod (2) is threadedly connected to the screw hole of a threaded sleeve (3), the side of the threaded sleeve (3) is fixedly connected to one end of a connecting rod (4), the other end of the connecting rod (4) is fixedly connected to the side of a clamping plate (5), the interior of the housing (1) is fixedly connected to the side of a cylinder (8), the piston end of the cylinder (8) is fixedly connected to the side of a motor (9), the output end of the motor (9) is fixedly connected to the side of a drill bit (10), and a protective mechanism (7) is provided inside the housing (1), and the protective mechanism (7) comprises: a telescopic rod (701), wherein the middle portion of the telescopic rod (701) is hinged to the outer wall of the fixed shaft (702), both ends of the fixed shaft (702) are fixedly connected to the interior of the housing (1), the end of the telescopic rod (701) is hinged to one end of an L-shaped rod (703), and the other end of the L-shaped rod (703) is fixedly connected to the side of the baffle (704); An extrusion rod (705), wherein the end of the extrusion rod (705) is fixedly connected to the side surface of the threaded sleeve (3).

2. The device for machining positioning holes for piston salt cores according to claim 1, characterized in that: A torsion spring is provided at the hinge between the telescopic rod (701) and the fixed shaft (702).

3. The device for machining positioning holes for piston salt cores according to claim 1, characterized in that: The number of the threaded sleeves (3), connecting rods (4), and splints (5) is set to two groups, and the two groups of threaded sleeves (3), connecting rods (4), and splints (5) are symmetrically distributed on both sides of the bidirectional threaded rod (2).

4. The device for machining positioning holes for piston salt cores according to claim 1, characterized in that: The side surfaces of the splint (5) are provided with anti-slip grooves.

5. The device for machining positioning holes for piston salt cores according to claim 1, characterized in that: A handle (11) is provided on the side of the housing (1).

6. The device for machining positioning holes for piston salt cores according to claim 1, characterized in that: The other end of the bidirectional threaded rod (2) is fixedly connected to the side of the turntable (6).

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