A positioning tool for milling the arc groove on the outer wall of a pin shaft

Abstract

A positioning tool for milling curved grooves on the outer wall of a pin shaft comprises a frame, a motor, and a speed-regulating gear set. The motor and speed-regulating gear set are both mounted within the frame, with the power input end of the speed-regulating gear set connected to the motor's output shaft. The power output end of the speed-regulating gear set is connected to a turntable seat, which is rotatably connected to the frame, and a pin shaft positioning frame is radially adjustable on its top surface. A radial positioning plate is fixed to the lower portion of the pin shaft positioning frame, a height positioning rod is movably inserted into the middle portion of the pin shaft positioning frame, and a clamping positioning unit fixed to the top end of the pin shaft is mounted on the top portion of the pin shaft positioning frame. This positioning tool can position the tool for milling curved grooves on the outer wall of the pin shaft, and both the milling groove depth and the groove surface curvature can be controlled with high precision. It is particularly suitable for milling curved grooves on the outer wall of large quantities of pin shafts.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical tooling, and in particular to a positioning tool for milling a groove on the arc surface of an outer wall of a pin shaft. Background Art

[0002] In the field of workpiece machining, milling the outer wall of the pin shaft is one of the more common machining processes. However, in the existing technology, the shape of the milling groove of the outer wall of the pin shaft is limited to a flat groove. The processing method is to fix the pin shaft on the vise of the milling machine, and then use a milling cutter to perform flat milling. The defects of this milling method and the milling positioning tool are that when it is necessary to mill an arc groove on the outer wall of the pin shaft, the arc surface of the arc groove cannot be processed at all, and the arc surface depth and arc surface curvature cannot be controlled by the milling method and the milling positioning tool in the existing technology. The current solution is for the fitter to manually process it with a file based on experience, but when processing the arc groove on the outer wall of the pin shaft in large quantities, its processing efficiency and processing accuracy cannot be guaranteed.

[0003] No relevant comparative documents were found through public patent search. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a positioning tool for milling the arc groove on the outer wall of the pin shaft. The positioning tool can position the tool for milling the arc groove on the outer wall of the pin shaft, and the milling groove depth and the curvature of the groove surface can be controlled with high precision. It is particularly suitable for milling the arc groove on the outer wall of the pin shaft in large quantities.

[0005] A positioning tool for milling arc grooves on the outer wall of a pin shaft comprises a frame, a motor and a speed regulating gear set, wherein the motor and the speed regulating gear set are both installed inside the frame, and the power input end of the speed regulating gear set is connected to the output shaft of the motor; the power output end of the speed regulating gear set is connected to a turntable seat, which is rotatably connected to the frame, and a pin shaft positioning frame is radially adjusted and connected to the top surface of the turntable seat; a radial positioning plate is fixedly installed at the lower part of the pin shaft positioning frame, a height positioning rod is movably inserted in the middle part of the pin shaft positioning frame, and a clamping positioning unit fixed to the top end of the pin shaft is installed on the top of the pin shaft positioning frame.

[0006] Moreover, the clamping and positioning unit includes a top limit plate, a pressure clamping block and a horizontal support block arranged in sequence from top to bottom, wherein the top limit plate and the horizontal support block are fixedly mounted on the side wall of the pin positioning frame, and the horizontal support block slidingly supports the pressure clamping block; the pressure clamping block includes a fixed block and a movable block, wherein the fixed block is fixedly mounted on the side wall of the pin positioning frame, and the side wall of the fixed block is connected to the movable block by adjusting the bolt spacing; the fixed block and the movable block are both provided with a V-shaped clamping groove that cooperates with the clamping on the outer wall of the pin; the top limit plate is provided with a limiting hole that penetrates and radially limits the pin.

[0007] Moreover, a plurality of radial long holes are formed on the top surface of the turntable seat, and a plurality of fastening bolts are penetrated and connected in the radial long holes; the tops of the fastening bolts penetrate upward and are threadedly connected to the bottom plate of the pin positioning frame,

[0008] Moreover, a push pin extending upward is fixedly mounted in the middle of the radial positioning plate, and the push pin is supported by pressing on the bottom surface of the pin shaft.

[0009] Moreover, a plurality of pin holes are formed in the middle of the pin shaft positioning frame, and height positioning rods are movably inserted into the pin holes along the horizontal direction.

[0010] The advantages and technical effects of the present invention are:

[0011] The present invention provides a positioning tool for arc milling of the outer wall of a pin shaft, which is supported as a whole by a frame; the rotational power of the turntable seat is provided by a motor; the speed of the turntable seat is adjusted by a speed regulating gear set; the turntable seat provides axial support for the pin shaft positioning frame, and the radial long hole on the turntable seat is radially adjustable to connect the pin shaft positioning frame, thereby controlling the rotation radius of the pin shaft with the axis of the turntable seat as the center of the circle, thereby realizing the adjustment of the arc milling groove depth; the bottom end of the pin shaft is positioned by a radial positioning plate and a top pin, and the axial positioning point of the pin shaft is controlled by a height positioning rod radially penetrating and inserted in the middle of the pin shaft; the top end of the limiting pin shaft is fixed by a clamping positioning unit, wherein the pressure clamping block fixes the pin shaft by pressing the bolt, and the movable block of the pressure clamping block is provided with horizontal sliding limiting support by the horizontal support plate; finally, the radial limiting support of the top end of the pin shaft is provided by the top limiting plate and the limiting hole.

[0012] The positioning tool for milling the arc groove of the outer wall of the pin shaft of the present invention fills the gap in the existing technology of the positioning tool for milling the arc groove of the outer wall of the pin shaft, improves the processing efficiency, and the positioning tool has a simple structure, low cost and high processing precision. It is a positioning tool for milling the arc groove of the outer wall of the pin shaft with high creativity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereoscopic view of the present invention (front view 45°);

[0014] Figure 2 This is a three-dimensional diagram of the present invention (front view at 45°, schematic diagram of the internal connection of the frame);

[0015] Figure 3 It is a three-dimensional view of the present invention (back side 45°);

[0016] Figure 4 for Figure 2 A partial enlarged view of point A in the middle;

[0017] In the figure: 1-frame; 2-clamping and positioning unit; 3-height positioning rod; 4-pin positioning frame; 5-radial positioning plate; 6-turntable seat; 7-pin hole; 8-top pin; 9-radial long hole; 10-motor; 11-fastening bolt; 12-top limit plate; 13-limiting hole; 14-V-shaped clamping groove; 15-fixed block; 16-horizontal support block; 17-movable block. DETAILED DESCRIPTION

[0018] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings. It should be noted that the embodiments are illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereby.

[0019] A positioning tool for milling arc grooves on the outer wall of a pin shaft comprises a frame 1, a motor 10 and a speed regulating gear set, wherein the motor and the speed regulating gear set are both installed inside the frame, and the power input end of the speed regulating gear set is connected to the output shaft of the motor; the power output end of the speed regulating gear set is connected to a turntable seat 6, which is rotatably connected to the frame, and a pin shaft positioning frame 4 is radially adjusted and connected to the top surface of the turntable seat; a radial positioning plate 5 is fixedly installed at the lower part of the pin shaft positioning frame, a height positioning rod 3 is movably inserted in the middle part of the pin shaft positioning frame, and a clamping positioning unit 2 fixed to the top end of the pin shaft is installed on the top of the pin shaft positioning frame.

[0020] Moreover, the clamping and positioning unit includes a top limit plate 12, a pressure clamping block and a horizontal support block 16 arranged in sequence from top to bottom, wherein the top limit plate and the horizontal support block are fixedly mounted on the side wall of the pin positioning frame, and the horizontal support block slidingly supports the pressure clamping block; the pressure clamping block includes a fixed block 15 and a movable block 16, wherein the fixed block is fixed on the side wall of the pin positioning frame, and the side wall of the fixed block is connected to the movable block by adjusting the bolt spacing; the fixed block and the movable block are both provided with a V-shaped clamping groove 14 that is clamped on the outer wall of the pin; the top limit plate is provided with a limiting hole 13 that penetrates and radially limits the pin.

[0021] Moreover, a plurality of radial long holes 9 are formed on the top surface of the turntable seat, and a plurality of fastening bolts 11 are penetrated and connected in the radial long holes; the tops of the fastening bolts penetrate upward and are threadedly connected to the bottom plate of the pin positioning frame,

[0022] Moreover, an upwardly extending ejector pin 8 is fixedly mounted in the middle of the radial positioning plate, and the ejector pin is supported by pressing on the bottom surface of the pin shaft.

[0023] Moreover, a plurality of pin holes 7 are formed in the middle of the pin shaft positioning frame, and the height positioning rods are movably inserted into the pin holes along the horizontal direction.

[0024] In addition, the present invention preferably adopts mature products in the prior art for the motor and the speed regulating gear set, and the connection method between the motor and the speed regulating gear set and the speed regulating gear set and the turntable seat shaft adopts mature means in the prior art.

[0025] In order to more clearly illustrate the specific embodiment of the present invention, an embodiment is provided below:

[0026] The present invention provides a positioning tool for milling an arc groove on the outer wall of a pin shaft. The pin shaft needs to penetrate downward from a limiting hole to the inside of a pin shaft positioning frame for positioning. During positioning, the bottom of the pin shaft is coaxially pressed and limited by a top pin on a radial limiting plate. The middle part of the pin shaft radially penetrates a height positioning rod to adjust the positioning height of the pin shaft. The top of the pin shaft is clamped and fixed by a pressure clamping block and limited by the limiting hole.

[0027] During the milling process, the entire frame is fixed on the lathe track, and then the motor is started. The speed is adjusted by the speed regulating gear set and the turntable seat is driven to rotate. During the rotation of the turntable seat, the lathe tool is extended from the upper part of the pin locating frame into the side wall position of the tool pin locating frame, and the pin is positioned and the outer wall of the positioned pin is milled. It should be noted that as the turntable seat rotates, the motion trajectory of the pin locating plate is cylindrical, and the top of the cylindrical motion trajectory is an opening area. The lathe tool is extended from the opening area into the inside of the cylindrical motion trajectory.

[0028] When it is necessary to adjust the depth of the arc groove on the outer wall of the pin shaft, the connection position of the fastening bolt in the radial long hole can be adjusted, and then the distance between the pin shaft positioning frame and the axis position of the turntable seat can be adjusted; and the curvature and angle of the arc groove on the outer wall of the pin shaft can be adjusted by the position where the lathe tool cuts into the outer wall of the pin shaft.

[0029] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A positioning tool for milling a curved groove on the outer wall of a pin shaft, comprising a frame, a motor, and a speed-regulating gear set, wherein the motor and the speed-regulating gear set are both mounted inside the frame, and the power input end of the speed-regulating gear set is connected to the output shaft of the motor; characterized in that: The power output end of the speed regulating gear set is connected to a turntable seat, which is rotatably connected to the frame, and a pin shaft positioning frame is radially adjustable and connected to the top surface of the turntable seat; a radial positioning plate is fixedly installed at the lower part of the pin shaft positioning frame, a height positioning rod is movably inserted in the middle part of the pin shaft positioning frame, and a clamping positioning unit fixed to the top end of the pin shaft is installed on the top of the pin shaft positioning frame; The clamping and positioning unit includes a top limiting plate, a pressure clamping block and a horizontal support block arranged in sequence from top to bottom, wherein the top limiting plate and the horizontal support block are fixedly mounted on the side walls of the pin shaft positioning frame, and the horizontal support block slidably supports the pressure clamping block; the pressure clamping block includes a fixed block and a movable block, wherein the fixed block is fixedly mounted on the side walls of the pin shaft positioning frame, and the side walls of the fixed block are connected to the movable block by adjusting the spacing of bolts; the fixed block and the movable block are both formed with a V-shaped clamping groove that fits on the outer wall of the pin shaft; the top limiting plate is formed with a limiting hole that penetrates and radially limits the pin shaft; A plurality of radial long holes are formed on the top surface of the turntable seat, and a plurality of fastening bolts are penetrated and connected in the radial long holes; the tops of the fastening bolts penetrate upward and are threadedly connected to the bottom plate of the pin shaft positioning frame; A push pin extending upward is fixedly mounted in the middle of the radial positioning plate, and the push pin is supported by pressing on the bottom surface of the pin shaft; A plurality of pin holes are formed in the middle of the pin shaft positioning frame, and height positioning rods are movably inserted into the pin holes along the horizontal direction.

Images