Clamping tool for processing side hole of coupler cylinder

Abstract

The utility model discloses a clamping tool for processing a side hole of a coupler barrel, which belongs to the technical field of coupler production and comprises a base, a mounting plate, a positioning seat, a rotary oil cylinder, a pressing plate and an adjusting seat, the lower end of the mounting plate is connected with the base, and the positioning seat, the rotary oil cylinder and the adjusting seat are sequentially mounted on one side of the mounting plate from top to bottom. A center protruding column is arranged in the center of the positioning seat, an outer side protruding column is arranged on the outer side of the center protruding column, the middle of the pressing plate is connected with a piston rod of the rotary oil cylinder, and an adjusting rod is connected to the adjusting seat through threads. According to the clamping tool, center positioning and circumferential positioning of a workpiece are achieved through the positioning base, axial positioning of the workpiece is achieved through the rotary oil cylinder, the pressing pressure of the workpiece can be adjusted through the positioning base, the clamping tool is accurate in positioning and stable in clamping, the workpiece cannot be damaged by pressing, the machining quality of a side hole of a coupler barrel is improved, and the machining efficiency is improved. The product percent of pass is improved and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of coupling production technology, specifically relating to a clamping fixture for machining the side holes of coupling cylinders. Background Technology

[0002] A coupling, also known as a shaft coupling, is used to securely connect the driving and driven shafts in different mechanisms, enabling them to rotate together and transmit motion and torque. It is a type of rotary transmission device. A coupling generally consists of two cylindrical bodies and a transmission elastic element disposed between the two bodies, which provides a buffering effect, such as... Figure 1 As shown, the coupling cylinder 1 has a central through hole 2 forming a cylindrical shape. One end of the cylinder 1 is provided with multiple cylinder protrusions 3 evenly distributed along the circumference. The cylinder wall of the cylinder 1 is provided with side holes 4. In application, the multiple cylinder protrusions 3 of the two cylinders 1 are arranged alternately, and a conventional elastic body is installed between adjacent cylinder protrusions 3. The two cylinders 1 are connected to the driving shaft and the driven shaft respectively, so that the rotational transmission function between the driving shaft and the driven shaft can be realized.

[0003] When machining cylinder 1, a central through hole 2 is first machined on a cylindrical metal rod to form a cylindrical shape. Then, multiple cylindrical protrusions 3 are machined at one end, followed by the machining of side holes 4. Before machining the side holes 4, the workpiece (i.e., the cylinder before the side holes 4 are machined) needs to be reliably clamped. The traditional clamping method is to use a flat-jaw vise to hold the workpiece, which has the following drawbacks: During the clamping process of the flat-jaw vise, the workpiece is prone to movement, so it is difficult to accurately position the workpiece, ultimately resulting in a large error in the machining of the side holes, reducing the product qualification rate and increasing production costs. At the same time, the clamping force of the flat-jaw vise is difficult to control when clamping the workpiece, which can easily lead to unstable clamping or damage to the workpiece, which will also reduce the product qualification rate and increase production costs. Utility Model Content

[0004] The purpose of this invention is to provide a clamping fixture for machining the side holes of coupling cylinders that is accurate in positioning, stable in clamping, and does not damage the workpiece, in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A clamping fixture for machining side holes in a coupling cylinder includes a base, a mounting plate, a positioning seat, a rotary cylinder, a pressure plate, and an adjusting seat. The lower end of the vertical mounting plate is connected to the base. The first end of the positioning seat is connected to the upper side of one side of the mounting plate. The second end of the positioning seat has a vertical plane with a horizontally protruding, cylindrical central protrusion at its center. The second end of the positioning seat has an outer protrusion located outside the central protrusion. The rotary cylinder is mounted on the middle of one side of the mounting plate and is located directly below the positioning seat. The middle of the vertical pressure plate is connected to the piston rod of the rotary cylinder. The adjusting seat is mounted on the lower side of the mounting plate and is located directly below the rotary cylinder. A horizontal adjusting rod is threaded onto the adjusting seat, and the lower part of the pressure plate partially or completely overlaps with the adjusting rod in the horizontal projection. The upper part of the pressure plate partially or completely overlaps with the positioning seat in the horizontal projection.

[0007] Preferably, in order to facilitate the machining of side holes of coupling cylinders of different sizes by replacing a few parts, the pressure plate includes an upper pressure plate and a lower pressure plate. The lower end of the upper pressure plate is connected to the upper end of the lower pressure plate by screws. The upper middle part of the upper pressure plate partially or completely overlaps with the positioning seat in the horizontal projection. The upper middle part of the lower pressure plate is connected to the piston rod of the rotary cylinder. The lower part of the lower pressure plate partially or completely overlaps with the adjusting rod in the horizontal projection.

[0008] Preferably, in order to achieve rapid tool setting during machining, a tool setting block for setting machining tools is installed at the upper end of the mounting plate next to the positioning seat.

[0009] Preferably, for ease of processing and assembly, the mounting plate and the base are integrally formed, and the cylindrical positioning seat with a transverse axial direction is connected to the mounting plate by a plurality of connecting screws.

[0010] The beneficial effects of this utility model are as follows:

[0011] This utility model, through the design of a mutually cooperating mounting plate, positioning seat, rotary cylinder, pressure plate, and adjusting seat, achieves center and circumferential positioning of the workpiece during clamping. The central protrusion on the positioning seat is placed inside the central through hole of the workpiece, and the outer protrusion is placed between two adjacent cylindrical protrusions on the workpiece. The end faces of the multiple cylindrical protrusions on the workpiece contact the corresponding end faces of the positioning seat, thus achieving center and circumferential positioning of the workpiece. The rotary cylinder drives the pressure plate to rotate and move laterally, achieving axial positioning of the workpiece. This also facilitates workpiece assembly and disassembly. The positioning seat allows for adjustment of the clamping pressure, resulting in more reliable clamping. This clamping fixture provides precise positioning, stable clamping, and prevents damage to the workpiece, improving the machining quality of the coupling's cylindrical side holes, increasing product qualification rate, and reducing production costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional view of the cylindrical body of a coupling;

[0013] Figure 2 This is a perspective view of the clamping fixture for machining the side hole of the coupling cylinder according to the present invention;

[0014] Figure 3 This is a left view of the clamping fixture for machining the side hole of the coupling cylinder according to the present invention;

[0015] Figure 4 This is a perspective view of the clamping fixture used for machining the side holes of the coupling cylinder as described in this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figure 2 and Figure 3As shown, the clamping fixture for machining the side hole of the coupling cylinder according to this utility model includes a base 15, a mounting plate 10, a positioning seat 7, a rotary cylinder 12, a pressure plate (refer to the upper pressure plate 6 and lower pressure plate 11 in the following description) and an adjusting seat 14. The lower end of the vertical mounting plate 10 is connected to the base 15. The first end of the positioning seat 7 is connected to the upper part of one side of the mounting plate 10. The second end of the positioning seat 7 has a vertical plane end face and a horizontally protruding, cylindrical central protrusion 8 at its center. The central protrusion 8 is located on the second end face of the positioning seat 7. An outer protruding post 9 is provided on the outer side of the 8. The rotary cylinder 12 is installed in the middle of one side of the mounting plate 10 and is located directly below the positioning seat 7. The middle of the vertical pressure plate is connected to the piston rod 13 of the rotary cylinder 12. The adjusting seat 14 is installed in the lower part of one side of the mounting plate 10 and is located directly below the rotary cylinder 12. A horizontal adjusting rod 16 is threadedly connected to the adjusting seat 14. The lower part of the pressure plate and the adjusting rod 16 partially or completely overlap in the horizontal projection. The upper part of the pressure plate partially or completely overlaps in the horizontal projection with the positioning seat 7.

[0018] like Figure 2 and Figure 3 As shown, this utility model also discloses the following more optimized specific structures:

[0019] To facilitate the machining of side holes in coupling cylinders of different sizes by replacing only a few parts, the pressure plate includes an upper pressure plate 6 and a lower pressure plate 11. The lower end of the upper pressure plate 6 is connected to the upper end of the lower pressure plate 11 by screws. The upper middle part of the upper pressure plate 6 partially or completely overlaps with the positioning seat 7 in the horizontal projection. The upper middle part of the lower pressure plate 11 is connected to the piston rod 13 of the rotary cylinder 12. The lower part of the lower pressure plate 11 partially or completely overlaps with the adjusting rod 16 in the horizontal projection.

[0020] In order to enable rapid tool setting during machining, a tool setting block 5 for setting machining tools is installed on the upper end of the mounting plate 10 next to the positioning seat 7.

[0021] For ease of processing and assembly, the mounting plate 10 and the base 15 are integrally formed, and the cylindrical positioning seat 7 with a transverse axis is connected to the mounting plate 10 by multiple connecting screws.

[0022] like Figures 1-4As shown, during processing, the central through hole 2 of the cylindrical body 1 is first machined on the cylindrical metal rod to form a cylindrical shape. Then, multiple cylindrical protrusions 3 are machined at one end to form the workpiece 17 with the side holes 4 to be machined. When clamping the workpiece 17, the piston rod 13 of the rotary cylinder 12 drives the pressure plate to rotate, causing the upper pressure plate 6 to rotate downward to facilitate the installation of the workpiece 17. Then, the central protrusion 8 on the positioning seat 7 is placed in the central through hole 2 of the workpiece 17, and the outer protrusion 9 is placed between two adjacent cylindrical protrusions 3 on the workpiece 17. The end faces of the multiple cylindrical protrusions 3 of the workpiece 17 are brought into contact with the corresponding end faces of the positioning seat 7, thus achieving the clamping of the workpiece. The workpiece 17 is positioned centrally and circumferentially. Then, the rotary cylinder 12 drives the pressure plate to rotate, aligning the upper pressure plate 6 with the workpiece 17. The rotary cylinder 12 then drives the pressure plate to move laterally until the upper pressure plate 6 presses against the workpiece 17, thus achieving axial positioning of the workpiece 17. Afterward, the workpiece 17 can be machined for side holes using other equipment and tools. After machining the side holes 4, other parts requiring machining are then machined. The rotary cylinder 12 is then controlled to reverse its movement: first, it moves laterally to release the upper pressure plate 6 from the workpiece 17, then it rotates downwards, allowing the workpiece 17 to be easily removed. The workpiece 17 is then cut (if the length of the workpiece 17 is greater than the length of the cylinder 1, cutting is required). Figure 4 The displayed workpiece 17 is larger than Figure 1 The length of cylinder 1 shown), grinding and polishing, etc., are then used to obtain the following result: Figure 1 The cylindrical body 1 shown.

[0023] During the clamping process, if the pressure of the upper pressure plate on the workpiece 17 is not appropriate, the distance between the adjusting rod 16 and the lower pressure plate 11 can be changed by changing the relative position between the adjusting rod 16 and the adjusting seat 14. This changes the clamping force of the upper pressure plate 6 on the workpiece 17, achieving reliable clamping without damaging the workpiece 17.

[0024] If it is necessary to clamp workpieces 17 of different sizes, the upper pressure plate 6 and the lower pressure plate 11 can be separated, and an upper pressure plate 6 of the corresponding size can be replaced and connected to the lower pressure plate 11 with screws. Different upper pressure plates 6 are provided with grooves of different depths, so they can meet the clamping requirements of workpieces 17 of different sizes.

[0025] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A clamping fixture for machining side holes in a coupling cylinder, comprising a base, characterized in that: It also includes a mounting plate, a positioning seat, a rotary cylinder, a pressure plate, and an adjusting seat. The lower end of the vertical mounting plate is connected to the base. The first end of the positioning seat is connected to the upper side of one side of the mounting plate. The second end of the positioning seat is a vertical plane with a horizontally protruding, cylindrical central protrusion at its center. The second end of the positioning seat has an outer protrusion located outside the central protrusion. The rotary cylinder is mounted on the middle of one side of the mounting plate and is located directly below the positioning seat. The middle of the vertical pressure plate is connected to the piston rod of the rotary cylinder. The adjusting seat is mounted on the lower side of one side of the mounting plate and is located directly below the rotary cylinder. A horizontal adjusting rod is threaded onto the adjusting seat, and the lower part of the pressure plate partially or completely overlaps with the adjusting rod in the horizontal projection. The upper part of the pressure plate partially or completely overlaps with the positioning seat in the horizontal projection.

2. The clamping fixture for machining the side hole of the coupling body according to claim 1, characterized in that: The pressure plate includes an upper pressure plate and a lower pressure plate. The lower end of the upper pressure plate is connected to the upper end of the lower pressure plate by screws. The upper middle part of the upper pressure plate partially or completely overlaps with the positioning seat in the horizontal projection. The upper middle part of the lower pressure plate is connected to the piston rod of the rotary cylinder. The lower part of the lower pressure plate partially or completely overlaps with the adjusting rod in the horizontal projection.

3. The clamping fixture for machining the side holes of a coupling cylinder according to claim 1 or 2, characterized in that: A tool setting block for setting machining tools is installed at the upper end of the mounting plate, next to the positioning seat.

4. The clamping fixture for machining the side holes of a coupling cylinder according to claim 1 or 2, characterized in that: The mounting plate and the base are integrally formed, and the cylindrical positioning seat with a transverse axis is connected to the mounting plate by multiple connecting screws.

Images