Quick dismounting tool for taper shank boring cutter on center lathe spindle

Abstract

The utility model discloses a quick dismounting tool for a taper shank boring cutter on a center lathe spindle, which comprises a rectangular support, a vertically arranged support beam is fixed at one end of the support, a linear power source is arranged on one side of the lower end of the support beam, and the output end of the linear power source penetrates through the support beam and is hinged with an impact shaft. The impact shaft is inserted into the lathe spindle and is used for impacting a taper shank boring cutter; a rolling bearing is installed on the impact shaft close to the front end, the outer diameter of the rolling bearing is slightly smaller than the inner diameter of the lathe spindle, and the rolling bearing is used for avoiding friction between the impact shaft and an inner hole of the lathe spindle. According to the tool, the impact shaft is pushed to do accelerated motion through the linear power source, so that the taper-shank boring cutter can be impacted, and quick disassembly of the taper-shank boring cutter is achieved; the labor intensity of workers can be reduced, the working efficiency is improved, and the situation that the taper shank boring cutter is hit by waving an iron rod manually is avoided.

Description

Technical Field

[0001] The utility model relates to a disassembly tool, in particular to a quick disassembly tool for a taper shank boring tool on the main shaft of a common lathe. Background Art

[0002] In order to ensure the machining accuracy of the mounting holes on the hydraulic valve body, a taper shank boring tool is usually installed on the main shaft of a common lathe to machine the mounting holes. For each mounting hole machining, the tool needs to be replaced five times, in sequence: drilling -> rough boring for guiding -> rough boring -> fine boring for guiding -> fine boring. Each time the taper shank boring tool is replaced, the operator has to hold an iron rod about 1 meter long and with a diameter of insert it into the inner hole of the main shaft and strike the tool shank of the boring tool to disassemble the tool.

[0003] Since after each machining process of the boring tool for a period of time, the cutting heat will gradually transfer to the main shaft, resulting in an increase in the temperature of the main shaft. At this time, replacing the boring tool is called hot tool installation. After hot tool installation and after the machine stops for a period of time, the temperature of the main shaft gradually decreases, and the tool will be held tighter by the main shaft than usual. A great deal of force is required for disassembly, and it even needs to be struck 3 - 4 times to be disassembled, which is time-consuming and laborious. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a quick disassembly tool for a taper shank boring tool on the main shaft of a common lathe, which can reduce labor intensity and improve work efficiency.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] A quick disassembly tool for a taper shank boring tool on the main shaft of a common lathe, comprising a rectangular bracket. A vertically arranged support beam is fixed at one end of the bracket. A linear power source is provided on one side at the lower end of the support beam. The output end of the linear power source passes through the support beam and is hinged with an impact shaft. The impact shaft is inserted into the main shaft of the lathe for striking the taper shank boring tool; a rolling bearing is installed near the front end of the impact shaft, and the outer diameter of the rolling bearing is slightly smaller than the inner diameter of the main shaft of the lathe to avoid friction between the impact shaft and the inner hole of the main shaft of the lathe.

[0007] As a further preference, the linear power source includes a cylinder. A middle end cover is provided in the middle of the cylinder block of the cylinder. The cylinder block is divided into a working chamber and an energy storage chamber by the middle end cover. The piston of the cylinder is located in the working chamber. A vent hole is provided in the center of the middle end cover. A rubber ring seat and a rubber sealing ring are provided at one end of the piston close to the middle end cover for sealing the vent hole when the piston rod retracts.

[0008] As a further preference, an air inlet provided on the end cover at the front end of the working chamber of the cylinder is communicated with an air source through a quick exhaust valve and a manual reversing valve in sequence, and an air inlet provided on the end cover at the rear end of the energy storage chamber of the cylinder is directly communicated with the air source, so as to facilitate the piston of the cylinder to accelerate forward movement.

[0009] As a further preference, a connecting sleeve is coaxially fixed to the output end of the linear power source, and one end of the impact shaft is inserted into the connecting sleeve and hinged to the connecting sleeve through a pin shaft.

[0010] As a further preference, both ends of the impact shaft are in the shape of a stepped shaft with reduced diameters, and the rolling bearing is mounted on the stepped portion near the front end of the impact shaft through a tapered sleeve.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The tool can be fixed on the spindle box cover of the lathe by bolts through the rectangular bracket. Since a linear power source is provided at one end of the bracket through a support beam, the output end of the linear power source passes through the support beam and is hinged with an impact shaft, and the impact shaft is inserted into the lathe spindle. Therefore, by pushing the impact shaft to accelerate by the linear power source, the taper shank boring tool can be impacted to realize the rapid disassembly of the taper shank boring tool; the labor intensity of workers can be reduced, the work efficiency can be improved, and the situation of manually waving an iron rod to impact the taper shank boring tool can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model.

[0014] Figure 2 is Figure 1 the top view of

[0015] Figure 3 is Figure 2 the A-A sectional view of

[0016] Figure 4 is the pneumatic circuit schematic diagram of the present utility model.

[0017] In the figure: bracket 1, support beam 2, linear power source 3, lathe spindle 4, taper shank boring tool 5, cylinder 6, working chamber 601, energy storage chamber 602, middle end cover 7, rubber ring seat 8, piston 9, rubber sealing ring 10, connecting sleeve 11, impact shaft 12, rolling bearing 13, manual reversing valve 14, quick exhaust valve 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Such as Figures 1 to 4As shown in the figure, the utility model relates to a quick-disassembly tool for a taper shank boring tool used on the main shaft of an ordinary lathe, which includes a rectangular bracket 1 welded by rectangular steel pipes. At one end of the bracket 1, a vertically arranged support beam 2 is fixedly welded. The support beam 2 is made of a channel steel with the notch facing outward. At one side of the lower end of the support beam 2, a linear power source 3 is fixed by bolts. The output end of the linear power source 3 passes through the support beam 2 and is hinged with an impact shaft 12. The impact shaft 12 is inserted into the lathe main shaft 4 and is used to impact the taper shank boring tool. A rolling bearing 13 is installed near the front end of the impact shaft 12. The outer diameter of the rolling bearing 13 is larger than the maximum outer diameter of the impact shaft 12 and slightly smaller than the inner diameter of the lathe main shaft 4, so as to avoid friction between the impact shaft 12 and the inner hole of the lathe main shaft 4.

[0019] The linear power source 3 includes a cylinder 6. In the middle of the cylinder body of the cylinder 6, a middle end cover 7 is hermetically inserted. The cylinder body is divided into a front and rear working chamber 601 and an energy storage chamber 602 by the middle end cover 7. The piston 9 of the cylinder is located in the working chamber 601. A stepped air vent is provided in the center of the middle end cover 7. Near the middle end cover 7 at one end of the piston 9, a rubber ring seat 8 and a rubber sealing ring 10 are provided to seal the air vent when the piston rod retracts. The rubber ring seat 8 is press-fitted into the ring groove at one end of the piston 9, and the rubber sealing ring 10 is fixed to the outside of the rubber ring seat 8 by screws.

[0020] The air inlet provided on the end cover at the front end of the working chamber 601 of the cylinder 6 is sequentially communicated with the air source through a quick exhaust valve 15 and a manual reversing valve 14. The air inlet provided on the end cover at the rear end of the energy storage chamber 602 of the cylinder 6 is directly communicated with the air source through a trachea, so as to realize the accelerated forward movement of the piston of the cylinder. The manual reversing valve 14 is a two-position five-way valve.

[0021] A connecting sleeve 11 is coaxially fixed at the output end of the linear power source 3. One end of the impact shaft 12 is inserted into the connecting sleeve 11 and is hinged with the connecting sleeve 11 through a pin shaft. Both ends of the impact shaft 12 are in the shape of a stepped shaft with reduced diameter. The rolling bearing 13 is installed on the stepped part near the front end of the impact shaft 12 through a tapered sleeve.

[0022] In use, the tool can be fixed on the spindle box cover of the lathe by bolts through a rectangular bracket. Control the manual reversing valve 14 to reverse to the right position, and the gas enters the working chamber of the cylinder through the manual reversing valve 14 and the quick exhaust valve 15, pushing the piston to slide towards the middle end cover 7 until the rubber sealing ring abuts against the middle end cover 7, causing the gas entering the energy storage chamber to start storing energy. When it is necessary to disassemble the taper shank boring tool 5, control the manual reversing valve 14 to reverse to the left position, and the gas in the working chamber is quickly discharged through the quick exhaust valve 15, causing the piston to leave the middle end cover 7. The gas in the energy storage chamber quickly fills the space between the piston and the middle end cover 7, causing the piston to move forward with a large acceleration. The pressure energy of the gas is converted into the kinetic energy of the piston, generating a large impact force to impact the taper shank boring tool 5, thereby realizing the quick disassembly of the taper shank boring tool.

[0023] Although the embodiments of the present invention have been disclosed above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A quick disassembly tool for a taper shank boring tool used on the spindle of an ordinary lathe, characterized in that: It includes a rectangular bracket, with a vertically arranged support beam fixed at one end of the bracket. A linear power source is provided on one side of the lower end of the support beam. The output end of the linear power source passes through the support beam and is hinged with an impact shaft. The impact shaft is inserted into the lathe spindle and used to impact the taper shank boring tool. A rolling bearing is installed near the front end on the impact shaft. The outer diameter of the rolling bearing is slightly smaller than the inner diameter of the lathe spindle to avoid friction between the impact shaft and the inner hole of the lathe spindle.

2. The quick-disassembly tool for the taper shank boring tool used on the main shaft of an ordinary lathe according to claim 1, characterized in that: The linear power source includes a cylinder. A middle end cover is provided in the middle of the cylinder block of the cylinder. The cylinder block is divided into a working chamber and an energy storage chamber through the middle end cover. The piston of the cylinder is located in the working chamber. A ventilation hole is provided in the center of the middle end cover. A rubber ring seat and a rubber seal ring are provided at one end of the piston close to the middle end cover to seal the ventilation hole when the piston rod retracts.

3. A quick disassembly tool for a taper shank boring tool used on the main shaft of an ordinary lathe according to claim 2, characterized in that: The air inlet provided on the end cover at the front end of the working chamber of the cylinder is connected to the air source through a quick exhaust valve and a manual reversing valve in sequence. The air inlet provided on the end cover at the rear end of the energy storage chamber of the cylinder is directly connected to the air source to facilitate the piston of the cylinder to accelerate forward movement.

4. A quick-disassembly tool for a taper shank boring tool used on the main shaft of an ordinary lathe according to claim 1, characterized in that: A connecting sleeve is coaxially fixed at the output end of the linear power source. One end of the impact shaft is inserted into the connecting sleeve and hinged with the connecting sleeve through a pin shaft.

5. A quick-disassembly tool for a taper shank boring tool used on the spindle of an ordinary lathe according to claim 1 or 4, characterized in that: Both ends of the impact shaft are in the shape of a stepped shaft with reduced diameter. The rolling bearing is installed on the stepped part near the front end of the impact shaft through a tapered sleeve.

Images