Machining tool for drilling oil through hole in supporting chain wheel

Abstract

The utility model discloses a carrier chain wheel drilling oil hole processing tool which comprises a tool bottom plate, a positioning mandrel, a first anti-loosening nut and a pressing plate, the tool bottom plate is fixedly connected with the positioning mandrel through a fastening bolt, the tool bottom plate is in threaded connection with a screw rod through a threaded hole formed in the inner side, and the first anti-loosening nut is connected with the first anti-loosening nut. The outer side of the screw rod is sleeved with a first anti-loosening nut, the outer side of the screw rod is sleeved with a spring, the upper end of the spring is provided with a pressing plate, the outer side of the screw rod is sleeved with the pressing plate, the top of the screw rod is in threaded connection with a second anti-loosening nut, and the second anti-loosening nut is arranged at the upper end of the pressing plate; and a supporting chain wheel body is arranged between the positioning mandrel and the pressing plate. The machining tool for drilling the oil holes in the carrier chain wheel can clamp six workpieces each time, one pressing plate can press two workpieces at the same time, frequent clamping is not needed, burrs are treated in the machining process, line stopping is not needed, and the production efficiency is improved; a finish machining face is used as a positioning reference, a workpiece is not prone to pressing deviation, the machining size is stable, and the problems of drilling deviation and twist drill breakage are solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a tooling for drilling oil holes in a chain track wheel. Background Technology

[0002] In the field of machining, track rollers are important transmission components, and their machining accuracy directly affects the operating performance and service life of equipment. Drilling oil holes in track rollers is a key step in the machining process. As an important indicator of the track roller assembly, it directly affects the lubrication of the internal components and the flexibility of the roller's rotation, thus affecting the roller's service life. Traditional machining methods usually rely on manual operation and simple fixtures, and drilling oil holes in track rollers is prone to the following shortcomings:

[0003] 1. Using the worktable plane and the wheel end face as positioning references, the workpiece is easily pressed off-center, causing the oil hole to be drilled off-center, which makes the twist drill easily break during drilling;

[0004] 2. This processing method can only clamp one piece at a time, resulting in frequent clamping;

[0005] 3. After drilling is completed, the production line needs to be stopped to remove burrs, which affects production efficiency.

[0006] To address the aforementioned issues, we have developed an innovative design based on the existing tooling structure for drilling oil holes in the sprocket wheel. Utility Model Content

[0007] The purpose of this utility model is to provide a tooling for drilling oil holes in a chain wheel, in order to solve the problems mentioned in the background art, where the existing device uses the worktable plane and the wheel end face as positioning references, the workpiece is easily pressed off, causing the oil hole to be drilled off-center, the twist drill is easily broken during drilling, only one piece can be clamped at a time, resulting in frequent clamping, and after drilling, the line needs to be stopped to deal with burrs, which affects production efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a tooling for drilling oil holes in a chain roller, comprising a tooling base plate, a positioning mandrel, fastening bolts, a screw, a first anti-loosening nut, and a pressure plate. The tooling base plate is fixedly connected to the positioning mandrel by the fastening bolts, and the screw is threadedly connected to the tooling base plate through a threaded hole on its inner side. The screw is fitted with a first anti-loosening nut on its outer side, and a spring is fitted on the outer side of the screw. A pressure plate is provided at the upper end of the spring and is fitted on the outer side of the screw. A second anti-loosening nut is threadedly connected to the top of the screw and is located at the upper end of the pressure plate. A chain roller body is provided between the positioning mandrel and the pressure plate.

[0009] Preferably, the tooling base plate and the positioning mandrel are detachably connected by fastening bolts.

[0010] Preferably, the screw is vertically mounted on the tooling base plate and is locked in both directions by a first anti-loosening nut.

[0011] Preferably, the pressure plate is a rotatable structure, with its central hole and screw in clearance fit, and its height can be adjusted and tightened by the upper second anti-loosening nut.

[0012] Preferably, the axial dimension of the positioning mandrel forms a transition fit with the inner hole of the chain wheel, and its end face is provided with an axial positioning step.

[0013] Preferably, the tooling base plate has a T-slot at the bottom, which is connected to the machining center work platform by T-bolts.

[0014] Preferably, the pressure plate can simultaneously press down on two symmetrically arranged chain wheel bodies.

[0015] Compared with existing technologies, this device can clamp six pieces at a time, and one pressure plate can simultaneously clamp two workpieces, eliminating the need for frequent clamping. It can also handle burrs during processing without stopping the production line, thus improving production efficiency. Using the finished surface as the positioning reference, the workpiece is less prone to misalignment, ensuring stable machining dimensions and solving the problems of drilling deviation and twist drill breakage. The beneficial effects of this invention are: This tooling for drilling oil holes in a chain wheel is...

[0016] 1. The single-station machining fixture was changed to a six-station fixture, which reduced the frequency of personnel disassembling and assembling workpieces. The deburring process was used to remove burrs, which improved production efficiency and increased the single-shift capacity from 70 pieces to 120 pieces.

[0017] 2. The tooling positioning datum was changed from the end face of the roller body to the precision machined end face, eliminating quality problems such as uneven drilling of oil holes or breakage of twist drills due to uneven positioning datum, and the pass rate increased from 98% to 100%. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front sectional structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall side sectional structure of this utility model;

[0020] Figure 3 This is a front sectional view of the chain wheel body of this utility model.

[0021] In the diagram: 1. Tooling base plate; 2. Positioning mandrel; 3. Fastening bolt; 4. Screw; 5. First anti-loosening nut; 6. Pressure plate; 7. Second anti-loosening nut; 8. Spring; 9. Track roller body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 This utility model provides a technical solution: a tooling for drilling oil holes in a chain track wheel, comprising: a tooling base plate 1, a positioning mandrel 2, a fastening bolt 3, a screw 4, a first anti-loosening nut 5, and a pressure plate 6. The tooling base plate 1 is fixedly connected to the positioning mandrel 2 by the fastening bolt 3, and the tooling base plate 1 is threadedly connected to the screw 4 through a threaded hole on its inner side. The screw 4 is fitted with the first anti-loosening nut 5 on its outer side, and a spring 8 is fitted on its outer side. The upper end of the spring 8 is provided with a pressure plate 6, and the pressure plate 6 is fitted on the outer side of the screw 4. The top of the screw 4 is threadedly connected to a second anti-loosening nut 7, and the second anti-loosening nut 7 is provided on the upper end of the pressure plate 6. A chain track wheel body 9 is provided between the positioning mandrel 2 and the pressure plate 6.

[0024] The tooling base plate 1 and the positioning mandrel 2 are detachably connected by fastening bolts 3; the screw 4 is vertically mounted on the tooling base plate 1 and is locked in both directions by the first anti-loosening nut 5; the pressure plate 6 is a rotatable structure, with its center hole clearance-fitted to the screw 4, and its height is adjusted and pressed in place by the second anti-loosening nut 7 at the upper end; the axial dimension of the positioning mandrel 2 forms a transition fit with the inner hole of the sprocket wheel body 9, and its end face is provided with an axial positioning step; the bottom of the tooling base plate 1 is provided with a T-slot, which is connected to the machining center work platform by T-bolts; the pressure plate 6 can simultaneously press two symmetrically arranged sprocket wheel bodies 9;

[0025] Installation steps:

[0026] 1. The track roller body 9 is placed on the positioning mandrel 2 of the tooling base plate 1;

[0027] 2. Adjust the height of the pressure plate 6 according to the length of the track roller body 9;

[0028] 3. The inner end face and inner hole of the track roller body 9 are positioned by the positioning mandrel 2, and six workpieces are placed at a time;

[0029] 4. Rotate the pressure plate 6 to tighten the second anti-loosening nut 7, and tighten the two together to process the chain wheel body 9, and remove burrs during the processing;

[0030] 5. Once processing is complete, loosen the fastening bolt 3, rotate the pressure plate 6, remove the workpiece, and the processing is complete.

[0031] Working principle: Connect the fixture base plate 1 and the positioning mandrel 2 with fastening bolts 3. Connect the screw 4 to the fixture base plate 1 and lock the screw 4 with the first anti-loosening nut 5. Install the spring 8 onto the screw 4 and install the pressure plate 6. Tighten or loosen the second anti-loosening nut 7 according to the total length of the track roller body 9 and adjust the position of the pressure plate 6. After the assembly is completed, hoist the entire fixture onto the machining center work platform. Connect the fixture with the drilled oil hole to the machining center work platform with T bolts, so that the track roller body 9 is mounted on the positioning mandrel 2. Position the track roller body 9 with the inner end face of the track roller body 9 and the inner hole. Rotate the pressure plate 6, tighten the second anti-loosening nut 7 for two track roller bodies 9 at a time, and press the two track roller bodies 9 together. Process according to the program. During the processing, remove the burrs from the oil hole of the track roller body 9. After processing, loosen the second anti-loosening nut 7, rotate the pressure plate 6, remove the track roller bodies 9 one by one, and assemble the next set of workpieces. Repeat this cycle.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chain wheel supporting hole drilling processing tool, comprising a tool base plate (1), a positioning mandrel (2), a fastening bolt (3), a screw rod (4), a first anti-loosening nut (5) and a pressing plate (6), characterized in that, The tool base plate (1) is fixedly connected with the positioning mandrel (2) through the fastening bolt (3), the tool base plate (1) is threadedly connected with the screw rod (4) through the thread hole formed in the inner side, the first anti-loosening nut (5) is arranged on the outer side of the screw rod (4), the spring (8) is arranged on the outer side of the screw rod (4), the pressing plate (6) is arranged on the upper end of the spring (8), the pressing plate (6) is arranged on the outer side of the screw rod (4), the second anti-loosening nut (7) is threadedly connected with the top of the screw rod (4), the second anti-loosening nut (7) is arranged on the upper end of the pressing plate (6), and the positioning mandrel (2) and the pressing plate (6) are provided with the sprocket wheel body (9).

2. The sprocket hole drilling tooling fixture of claim 1, wherein: The tool base plate (1) and the positioning mandrel (2) are detachably connected through the fastening bolt (3).

3. The sprocket hole drilling tooling fixture of claim 1, wherein: The screw rod (4) is vertically arranged on the tool base plate (1) and is bidirectionally locked and fixed through the first anti-loosening nut (5).

4. The sprocket hole drilling tooling fixture of claim 1, wherein: The pressing plate (6) is a rotatable structure, the central hole of the pressing plate (6) is in clearance fit with the screw rod (4), the height is adjusted and the pressing is fixed through the second anti-loosening nut (7) on the upper end.

5. The sprocket hole drilling tooling fixture of claim 1, wherein: The axial dimension of the positioning mandrel (2) is in transition fit with the inner hole of the sprocket wheel body (9), and an axial positioning step is arranged on the end face of the positioning mandrel (2).

6. The sprocket hole drilling tooling fixture of claim 1, wherein: The bottom of the tool base plate (1) is provided with a T-shaped groove, and the T-shaped bolt is connected with the working platform of the machining center.

7. The sprocket hole drilling tooling fixture of claim 1, wherein: The pressing plate (6) can press two symmetrical sprocket wheel bodies (9) at the same time.

Images