An internally cooled CNC toolholder for machining valve parts

Abstract

An internally cooled CNC tool holder for valve component processing is used to install the tool of a CNC machine tool, including a power mechanism, a tool fixing mechanism, and a tool barrel installed in the tool holder. The tool barrel is rotatably installed in the tool holder, the power mechanism is connected to the tool barrel to drive the tool barrel to rotate, and the tool fixing mechanism is slidably installed at the end of the tool barrel. The tool of the CNC machine tool is installed in the tool barrel through the tool fixing mechanism, so that the tool barrel and the tool are fixed. This internally cooled CNC tool device can drive the tool to rotate, and can provide coolant for the rotating tool at the same time, and the coolant is used to cool the tool tip and promote the discharge of waste chips.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to an internally cooled numerical control tool holder for machining valve components. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool and automatically process parts according to the shape and size required by the drawing.

[0003] The CNC machine tool is provided with a turret for installing the cutting tools. Various cutting tools are installed on the turret through the tool holder. Some cutting tools on the market are provided with flow channels for spraying coolant, which is used to cool the cutting tip of the tool and facilitate chip removal. However, most of the tool holders currently used for installing such cutting tools on the market are unpowered tool holders, that is, the cutting tools cannot rotate, which is not conducive to meeting different processing requirements. Summary of the invention

[0004] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide an internally cooled CNC tool holder for valve component processing, which can realize the tool spraying coolant and can drive the tool to rotate as required to achieve different processing requirements.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The invention discloses an internally cooled CNC tool holder for machining valve parts, which is used for installing tools of CNC machine tools. The tool holder comprises a tool holder and a power mechanism, a tool fixing mechanism and a tool barrel installed in the tool holder. The power mechanism is connected to the tool barrel to drive the tool barrel to rotate. The tool fixing mechanism can be slidably installed at the end of the tool barrel. A tool fixing ring is provided in the tool fixing mechanism. The tool is fixed in the tool barrel by the tool fixing ring, and the end of the tool barrel is sealed by the tool fixing ring to form a sealed cavity between the tool barrel and the tool. A coolant flow channel is provided in the tool holder. The coolant flow channel is connected to the sealed cavity to provide coolant for the sealed cavity.

[0007] As a preferred solution of the present invention, a guide surface is provided at the end of the knife cylinder, and the tool fixing ring abuts against the guide surface, and the tool fixing ring is driven by the guide surface to undergo axial deformation.

[0008] As a preferred solution of the present invention, the tool fixing mechanism includes a pusher connected to the tool fixing ring, and the pusher drives the tool fixing ring to move axially to drive the tool fixing ring to deform axially.

[0009] As a preferred solution of the present invention, the tool holder is provided with a mounting hole for mounting the tool holder on the turret, a mounting screw is provided in the mounting hole, and the push piece partially extends into the mounting hole to drive the push piece to move axially through the mounting screw.

[0010] As a preferred solution of the present invention, a thrust piece is provided between the push piece and the tool fixing ring, and the thrust piece includes a thrust bearing and a bearing pad. The bearing pad abuts against the tool fixing ring, and the thrust bearing is arranged between the push piece and the bearing pad.

[0011] As a preferred solution of the present invention, the tool fixing ring includes a radial deformation portion and an axial guide portion, the radial deformation portion abuts against the guide surface to cause the radial deformation portion to undergo radial deformation, and the axial guide portion is sleeved on the outside of the tool barrel to guide the tool fixing ring.

[0012] As a preferred embodiment of the present invention, the coolant flow channel includes an annular flow channel and a connecting flow channel. The annular flow channel is arranged on the outside of the knife barrel. The connecting flow channel is connected to the annular flow channel, and the coolant is guided into the annular flow channel through the connecting flow channel.

[0013] As a preferred solution of the present invention, a liquid flow hole is provided on the knife barrel, and the liquid flow hole is arranged opposite to the annular flow channel so that the coolant in the annular flow channel flows into the sealing cavity.

[0014] As a preferred solution of the present invention, the power mechanism includes a clutch assembly and a power input member, the clutch assembly is slidably mounted on the tool holder, and the power input member is detachably connected to the clutch assembly.

[0015] As a preferred solution of the present invention, the clutch assembly includes a clutch shaft, a separation end cover and a connection end cover, and the clutch shaft is connected to the connection end cover or the separation end cover to achieve connection or disconnection between the clutch shaft and the power input member.

[0016] The beneficial effect of the present invention is that the internally cooled CNC tool device can drive the tool to rotate and provide coolant for the rotating tool, thereby cooling the tool tip and promoting the discharge of waste chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the internal cooling type CNC tool device.

[0018] Figure 2 It is a half-section schematic diagram of the internal cooling type CNC tool device.

[0019] Figure 3 It is a cross-sectional view of the connection between the push piece and the mounting screw.

[0020] Figure 4 It is a connection diagram of the knife barrel and the knife fixing mechanism.

[0021] Figure 5 This is a partial enlarged view of point A when the connecting end cover is connected to the clutch shaft.

[0022] Figure 6 This is a partial enlarged view of point A when the separation end cover is connected to the clutch shaft.

[0023] Figure 7 This is a partial enlarged view of point B.

[0024] Figure markings: tool holder 1, mounting through hole 1-1, mounting screw 1-2, power mechanism 2, clutch shaft 2-1, separation end cover 2-2, connecting end cover 2-3, power input member 2-4, clutch gear 2-5, locking key 2-6, connecting key 2-7, thrust bearing 2-8, tool fixing mechanism 3, push piece 3-1, thrust bearing 3-2, bearing pad 3-3, arc-shaped top block 3-4, tool cylinder 4, guide surface 4-1, liquid flow hole 4-2, tool fixing ring 5, radial deformation part 5-1, axial guide part 5-2, sealing chamber 6, coolant flow channel 7, annular flow channel 7-1, connecting flow channel 7-2. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] An internally cooled CNC tool holder for valve component processing is used to install a tool for a CNC machine tool, comprising a tool holder 1, a power mechanism 2 installed in the tool holder 1, a tool fixing mechanism 3, and a tool barrel 4. The tool barrel 4 is rotatably installed in the tool holder 1, the power mechanism 2 is connected to the tool barrel 4 to drive the tool barrel 4 to rotate, the tool fixing mechanism 3 is slidably installed at the end of the tool barrel 4, and the tool of the CNC machine tool is installed in the tool barrel 4 through the tool fixing mechanism 3, so that the tool barrel 4 and the tool are fixed.

[0027] The tool fixing mechanism 3 includes a push piece 3-1 and a tool fixing ring 5. The tool fixing ring 5 is sleeved on one side end of the tool barrel 4. A guide surface 4-1 is provided at the end of the tool barrel 4. The tool fixing ring 5 abuts on the guide surface 4-1, and the tool fixing ring 5 is driven to undergo axial deformation through the guide surface 4-1. The push piece 3-1 abuts on the outer side of the tool fixing ring 5, and the tool fixing ring 5 is driven to move axially through the push piece 3-1, so that the tool fixing ring 5 shrinks to a certain extent due to the action of the guide surface 4-1, so that the inner end surface of the tool fixing ring 5 abuts against the side wall of the tool, on the one hand, the tool is fixed in the tool barrel 4, and on the other hand, a sealed chamber 6 is formed between the tool barrel 4 and the tool. A coolant flow channel 7 is provided in the tool holder 1, and the coolant flow channel 7 is connected to the sealed chamber 6 to provide coolant for the sealed chamber 6. The coolant in the sealed chamber 6 flushes the tool tip through the flow channel on the tool.

[0028] The tool fixing ring 5 includes a radial deformation portion 5-1 and an axial guide portion 5-2. The radial deformation portion 5-1 abuts against the guide surface 4-1 to cause the radial deformation portion 5-1 to deform radially. The axial guide portion 5-2 is sleeved on the outer side of the knife barrel 4 to guide the tool fixing ring 5. As a preferred embodiment, the radial deformation portion 5-1 is in a conical structure, so that the radial deformation portion 5-1 receives the action of the guide surface 4-1 to produce a certain contraction, which is convenient for fixing the tool and facilitating the formation of the sealing cavity 6. Preferably, the radial deformation portion 5-1 is inclined relative to the guide surface 4-1, so that the radial deformation portion 5-1 is deformed along the axial direction of the knife barrel 4 during the deformation process, thereby further increasing the deformation amount of the radial deformation portion 5-1 and ensuring the sealing of the sealing cavity 6.

[0029] A thrust piece is provided between the push piece 3-1 and the tool fixing ring 5, and the thrust piece includes a thrust bearing 3-2 and a bearing pad 3-3. The bearing pad 3-3 abuts against the tool fixing ring 5, and the thrust bearing 3-2 is arranged between the push piece 3-1 and the bearing pad 3-3, so that the tool fixing ring 5 can rotate simultaneously with the knife cylinder 4, and at the same time prevent the tool fixing ring 5 and the push piece 3-1 from dry grinding, thereby improving the service life of the tool fixing ring 5.

[0030] The tool holder 1 is provided with a mounting hole 1-1 for mounting the tool holder 1 on the turret, and a mounting screw 1-2 is provided in the mounting hole 1-1. The tool holder 1 is mounted on the turret by means of the mounting screw 1-2. To facilitate driving the push member 3-1 to move, arc-shaped top blocks 3-4 are provided on both sides of the push member 3-1, and the arc-shaped top blocks 3-4 extend into the mounting hole 1-1. When the mounting screw 1-2 is inserted into the mounting hole 1-1, the mounting screw 1-2 is squeezed with the arc-shaped top block 3-4, thereby driving the push member 3-1 to move axially.

[0031] The coolant flow channel 7 includes an annular flow channel 7-1 and a connecting flow channel 7-2. The annular flow channel 7-1 is arranged on the outside of the knife barrel 4. The connecting flow channel 7-2 is connected to the liquid flow hole on the turret and the annular flow channel 7-1 respectively, and the coolant is guided into the annular flow channel 7-1 through the connecting flow channel 7-2. The knife barrel 4 is provided with a liquid flow hole 4-2, and the liquid flow hole 4-2 is arranged opposite to the annular flow channel 7-1, so that the coolant in the annular flow channel 7-1 flows into the sealing cavity 6, so that the coolant flows to the tip of the tool through the flow channel in the tool.

[0032] The power mechanism 2 includes a clutch assembly and a power input member 2-4. The clutch assembly is slidably mounted on the tool holder 1, and the clutch assembly is slidably connected to the tool barrel 4. Preferably, the end of the tool barrel 4 is a polygonal structure, and correspondingly, a polygonal hole is provided on the clutch assembly to realize the sliding connection between the clutch assembly and the tool barrel 4. At the same time, the rotational power on the clutch assembly can be transmitted to the tool barrel 4; the power input member 2-4 is rotatably mounted on the tool holder 1, and the power input member 2-4 is detachably connected to the clutch assembly. When the clutch assembly and the power input member 2-4 are connected, the power of the power input member 2-4 is transmitted to the tool barrel 4, driving the tool barrel 4 to rotate. When the clutch assembly and the power input member 2-4 are separated, the power of the power input member 2-4 cannot be transmitted to the tool barrel 4, so that the tool in the tool barrel 4 cannot rotate.

[0033] The clutch assembly includes a clutch gear 2-5, a clutch shaft 2-1, a separation end cover 2-2 and a connection end cover 2-3. The clutch shaft 2-1 is installed on the clutch gear 2-5. The clutch gear 2-5 is driven to move by the clutch shaft 2-1, thereby realizing the connection or separation of the clutch gear 2-5 and the power input member 2-4. The separation end cover 2-2 and the connection end cover 2-3 are adapted to the clutch shaft 2-1, that is, when the clutch shaft 2-1 is connected to the connection end cover 2-3, the clutch shaft 2-1 is connected to the power input member 2-4; when the clutch shaft 2-1 is connected to the separation end cover 2-2, the clutch shaft 2-1 is disconnected from the power input member 2-4.

[0034] The separation end cover 2-2 is fixed to the end face of the knife seat 1 by screws, and the end of the clutch shaft 2-1 abuts against the separation end cover 2-2, so that the clutch gear 2-5 moves toward the direction of the knife cylinder 4, thereby realizing the separation of the clutch gear 2-5 and the power input member 2-4. In order to facilitate the fixation of the knife cylinder 4, a plurality of locking keys 2-6 are provided on the circumferential side wall of the clutch shaft 2-1, and correspondingly, a plurality of connecting keys 2-7 are also provided in the knife seat 1. When the separation end cover 2-2 abuts against the clutch shaft 2-1, the locking key 2-6 is inserted into the gap between adjacent connecting keys 2-7, thereby realizing the locking of the knife cylinder.

[0035] An external thread is provided at the end of the clutch shaft 2-1, and an internal thread is provided in the connecting end cover 2-3. The connecting end cover 2-3 is installed on the outside of the clutch shaft 2-1 through threads, so that the clutch gear 2-5 moves in a direction away from the knife barrel 4, and the clutch gear 2-5 and the power input member 2-4 are connected. A thrust bearing 2-8 is provided between the connecting end cover 2-3 and the knife seat 1 to prevent the connecting end cover 2-3 from rubbing against the knife seat 1. When the clutch shaft 2-1 is connected to the connecting end cover 2-3, the locking key 2-6 and the connecting key 2-7 are separated to ensure that the knife barrel 4 can rotate.

[0036] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0037] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. An internally cooled CNC tool holder for valve component machining, used for installing tools of CNC machine tools, characterized in that: The invention comprises a tool holder (1), a power mechanism (2), a tool fixing mechanism (3), and a tool barrel (4) installed in the tool holder (1), wherein the power mechanism (2) is connected to the tool barrel (4) to drive the tool barrel (4) to rotate, the tool fixing mechanism (3) is slidably installed at the end of the tool barrel (4), a tool fixing ring (5) is provided in the tool fixing mechanism (3), the tool is fixed in the tool barrel (4) by the tool fixing ring (5), and the end of the tool barrel (4) is sealed by the tool fixing ring (5) to form a sealed cavity (6) between the tool barrel (4) and the tool, and a coolant flow channel (7) is provided in the tool holder (1), the coolant flow channel (7) is connected to the sealed cavity (6), and provides coolant for the sealed cavity (6); The end of the knife barrel (4) is provided with a guide surface (4-1), and the knife fixing ring (5) abuts against the guide surface (4-1), and the knife fixing ring (5) is driven by the guide surface (4-1) to undergo axial deformation; The tool fixing mechanism (3) comprises a push piece (3-1), the push piece (3-1) being connected to the tool fixing ring (5), and the push piece (3-1) driving the tool fixing ring (5) to move axially, thereby driving the tool fixing ring (5) to deform axially; The tool holder (1) is provided with a mounting through hole (1-1) for mounting the tool holder (1) on the tool turret, a mounting screw (1-2) is provided in the mounting through hole (1-1), and a push piece (3-1) partially extends into the mounting through hole (1-1) so as to drive the push piece (3-1) to move axially via the mounting screw (1-2).

2. The internally cooled CNC tool holder for valve component machining according to claim 1, characterized in that: A thrust piece is provided between the push piece (3-1) and the tool fixing ring (5), the thrust piece comprising a thrust bearing (3-2) and a bearing pad (3-3), the bearing pad (3-3) abutting against the tool fixing ring (5), and the thrust bearing (3-2) is arranged between the push piece (3-1) and the bearing pad (3-3).

3. The internally cooled CNC tool holder for valve component machining according to claim 1, characterized in that: The tool fixing ring (5) comprises a radial deformation portion (5-1) and an axial guide portion (5-2); the radial deformation portion (5-1) abuts against a guide surface (4-1) so that the radial deformation portion (5-1) undergoes radial deformation; and the axial guide portion (5-2) is sleeved on the outside of the tool cylinder (4) so ​​as to guide the tool fixing ring (5).

4. The internally cooled CNC tool holder for valve component machining according to claim 1, characterized in that: The coolant flow channel (7) comprises an annular flow channel (7-1) and a connecting flow channel (7-2); the annular flow channel (7-1) is arranged outside the knife barrel (4); the connecting flow channel (7-2) is connected to the annular flow channel (7-1); and the coolant is guided into the annular flow channel (7-1) via the connecting flow channel (7-2).

5. The internally cooled CNC tool holder for valve component machining according to claim 4, characterized in that: The knife barrel (4) is provided with a liquid flow hole (4-2), and the liquid flow hole (4-2) is arranged opposite to the annular flow channel (7-1), so that the cooling liquid in the annular flow channel (7-1) flows into the sealing cavity (6).

6. The internally cooled CNC tool holder for valve component machining according to claim 1, characterized in that: The power mechanism (2) comprises a clutch assembly and a power input component (2-4); the clutch assembly is slidably mounted on the knife seat (1); and the power input component (2-4) is detachably connected to the clutch assembly.

7. The internally cooled CNC tool holder for valve component machining according to claim 6, characterized in that: The clutch assembly comprises a clutch shaft (2-1), a separation end cover (2-2) and a connection end cover (2-3), and the clutch shaft (2-1) is connected to the connection end cover (2-3) or the separation end cover (2-2) to achieve connection or disconnection between the clutch shaft (2-1) and the power input member (2-4).

Images