Machine tool for machining slender shaft parts

Abstract

The utility model provides a machine tool for machining slender shaft parts, and belongs to the technical field of machine tool equipment. The problem that an existing slender shaft part machining machine tool is poor in machining stability is solved. The machine tool for machining the slender shaft type parts comprises a machine tool base, a clamping base is arranged on the machine tool base, a cutter mechanism used for part machining and an ejector pin clamp mechanism are arranged on the machine tool base, the ejector pin clamp mechanism can conduct linear motion close to or away from the clamping base, and the ejector pin clamp mechanism comprises a main shaft. An inner cavity formed towards one side of the clamping base is formed in the main shaft, an ejector pin assembly capable of telescopically moving in the length direction of the inner cavity is arranged in the inner cavity, a clamp assembly used for fixing a part is arranged on the main shaft, the clamp assembly is arranged on one side of an opening of the inner cavity, and clamping parts of the clamp assembly are distributed around the ejector pin assembly. The utility model has the advantage of good processing stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment and relates to a machine tool for processing slender shaft parts. Background Art

[0002] With the rapid development of my country's modern industry, more and more parts need to be processed with long shafts in mechanical processing. However, with the rapid development of my country's industry, the number and types of long shafts that need to be processed are increasing. At present, many machine tools in my country have many problems in processing long shaft parts. The most common processing of long shaft parts still relies on ordinary lathes. During the processing of traditional machine tools, both ends of the shaft parts are simply fixed. When the shaft parts are long, each processing requires manual adjustment of the coaxiality and circular runout of the long shaft parts. Manual adjustment often results in deviations in the processing dimensions of the two ends of the long shaft parts and vibration of the lathe during the processing of the long shaft parts. Utility Model Content

[0003] The purpose of the utility model is to provide a machine tool for processing slender shaft parts in view of the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A machine tool for processing slender shaft parts, comprising a machine tool base, a clamping base being arranged on the machine tool base, a tool mechanism and an ejector clamp mechanism for parts processing being arranged on the machine tool base, the ejector clamp mechanism being capable of linear motion towards or away from the clamping base, and characterized in that the ejector clamp mechanism comprises a main shaft, the main shaft having an inner cavity opened toward one side of the clamping base, an ejector assembly being arranged in the inner cavity and being telescopically movable along the length direction of the inner cavity, a fixture assembly for fixing parts being arranged on the main shaft, the fixture assembly being arranged on one side of the inner cavity opening, and a supporting portion of the fixture assembly being distributed around the ejector assembly.

[0006] In the above-mentioned machine tool for processing slender shaft parts, the ejector assembly includes a transmission cylinder body and an ejector. The transmission cylinder body is distributed in the inner cavity in an elongated strip shape, and a through hole for the working part of the ejector to pass through is provided on the end portion of the transmission cylinder body facing the clamping base. The ejector can reciprocate in the transmission cylinder body and pass through the through hole or retract into the transmission cylinder body.

[0007] In the above-mentioned machine tool for processing slender shaft parts, the ejector pin comprises a needle body, the front end of the needle body is a tip portion for holding the workpiece, and the rear end of the ejector pin has a radial protrusion that is in sealing contact with the inner wall of the transmission cylinder.

[0008] In the above-mentioned machine tool for processing slender shaft parts, a chamber is formed between the sealing ring platform and the end of the transmission cylinder body away from the through hole, and the transmission cylinder body is provided with an inlet pipe and an outlet pipe connected to the interior of the chamber.

[0009] In the above-mentioned machine tool for processing slender shaft parts, the needle body and the sealing ring platform can be integrally formed or detachably connected.

[0010] In the above-mentioned machine tool for processing slender shaft parts, a plurality of evenly distributed sealing grooves are provided on the outer surface of the sealing ring platform, and a sealing ring is arranged in each of the sealing grooves.

[0011] In the above-mentioned machine tool for processing slender shaft parts, the diameter of the through hole is smaller than the diameter of the sealing ring stage.

[0012] In the above-mentioned machine tool for processing slender shaft parts, the fixture assembly includes a fixture base and a plurality of claws arranged on the fixture base, and the plurality of claws are evenly distributed on the fixture base in the circumferential direction with the central axis of the perforation as the center, and the plurality of claws can be moved synchronously close to the central axis of the perforation or away from the central axis of the perforation.

[0013] In the above-mentioned machine tool for processing slender shaft parts, the tool mechanism includes a lateral moving component and an axial moving component. The lateral moving component is connected to the working part of the axial moving component and the two are arranged perpendicular to each other. The lateral moving component is provided with a processing tool disc.

[0014] Compared with the existing technology, the utility model has the advantages that during the entire processing process, the ejector pin always presses against the end of the part to prevent its axial movement, and the clamp assembly is adjusted as the cutting position of the part is adjusted to always maintain cutting stability.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the ejector clamp mechanism in the utility model.

[0018] Figure 3 It is a side view of the utility model.

[0019] In the figure, 1, machine tool base; 2, clamping base; 3, tool mechanism; 4, ejector fixture mechanism; 5, spindle; 6, inner cavity; 7, ejector assembly; 8, fixture assembly; 9, transmission cylinder; 10, ejector; 11, perforation; 12, needle body; 13, tip; 14, sealing ring platform; 15, chamber; 16, inlet pipe; 17, outlet pipe; 18, sealing groove; 19, sealing ring; 20, fixture seat; 21, claw; 22, lateral moving assembly; 23, axial moving assembly; 24, machining cutter disc. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 3 As shown, a machine tool for processing slender shaft parts includes a machine tool base 1, a clamping base 2 is arranged on the machine tool base 1, a tool mechanism 3 and an ejector clamp mechanism 4 for part processing are arranged on the machine tool base 1, the ejector clamp mechanism 4 can perform a linear motion towards or away from the clamping base 2, the ejector clamp mechanism 4 includes a main shaft 5, the main shaft 5 has an inner cavity 6 opened toward the clamping base 2, an ejector assembly 7 which can be telescopically moved along the length direction of the inner cavity 6 is arranged in the inner cavity 6, a clamp assembly 8 for fixing parts is arranged on the main shaft 5, the clamp assembly 8 is arranged on the opening side of the inner cavity 6, and the supporting part of the clamp assembly 8 is distributed around the ejector assembly 7.

[0022] In this embodiment, the machine tool is used for processing slender shaft parts. When processing the parts, the two ends of the parts are fixed by the clamping base 2 and the ejector assembly 7, and then the tool mechanism 3 is moved to process the part of the part close to the ejector assembly 7 first. When the tool mechanism 3 has completed cutting a part of the part, the spindle 5 will begin to move toward the middle part of the part, so that the ejector 10 will move relatively and shrink into the inner cavity 6, so that the spindle 5 wraps the processed part of the part, and then the fixture assembly 8 works to clamp the part, and the tool mechanism 3 starts to cut the unfinished part of the part against the fixture assembly 8, and this cycle is repeated until the part is processed. During the entire processing process, the ejector assembly 7 always presses the end of the part tightly to prevent its axial movement, and the fixture assembly 8 is adjusted as the cutting position of the part is adjusted to always maintain the stability of the cutting.

[0023] The linear motion of the main shaft 5 can be driven by a driver such as a motor or a cylinder. Those skilled in the art should understand that this driving method is a prior art.

[0024] Specifically, the ejector assembly 7 includes a transmission cylinder body 9 and an ejector 10. The transmission cylinder body 9 is distributed in the inner cavity 6 in an elongated shape, and a through hole 11 for the working part of the ejector 10 to pass through is provided on the end of the transmission cylinder body 9 facing the clamping base 2. The ejector 10 can reciprocate in the transmission cylinder body 9 and pass through the through hole 11 or retract into the transmission cylinder body 9.

[0025] In this embodiment, the ejector pin 10 includes a needle body 12, the front end of the needle body 12 is a tip portion 13 for holding a workpiece, and the rear end of the ejector pin 10 has a radially protruding sealing ring 14 that is in sealing contact with the inner wall of the transmission cylinder 9. Preferably, a plurality of evenly distributed sealing grooves 18 are formed on the outer surface of the sealing ring 14, and a sealing ring 19 is disposed in each sealing groove 18. The sealing ring 14 and the sealing ring 19 on the sealing ring 14 are provided to maintain the sealing performance of the ejector pin 10 when it moves relative to the transmission cylinder 9.

[0026] Specifically, a chamber 15 is formed between the sealing ring stage 14 and the end of the transmission cylinder body 9 away from the through hole 11, and an inlet pipe 16 and an outlet pipe 17 connected to the inside of the chamber 15 are provided on the transmission cylinder body 9. The chamber 15 is used for filling with air or oil. Preferably, oil can be selected. Oil has more stable performance and can withstand greater pressure than air. When it is necessary to push the ejector pin 10 to move toward the side of the mounting hole, oil can be filled into the chamber 15 through the inlet pipe 16. When the ejector pin 10 needs to move away from the mounting hole, the oil can be returned through the outlet pipe 17.

[0027] In this embodiment, the needle body 12 and the sealing ring platform 14 can be integrally formed or detachably connected. Both have their own advantages. The integral one has the advantage of higher strength, and the detachable connection has the advantage of convenient disassembly and replacement. Both have their own advantages. The integral one has the advantage of higher strength, and the detachable connection has the advantage of convenient disassembly and replacement.

[0028] The diameter of the through hole 11 is smaller than the diameter of the sealing ring stage 14. This is equivalent to limiting the position of the sealing ring stage 14. When the sealing ring stage 14 moves to the position of the through hole 11, the maximum displacement is reached.

[0029] In this embodiment, the clamp assembly 8 includes a clamp seat 20 and a plurality of claws 21 arranged on the clamp seat 20. The plurality of claws 21 are evenly distributed on the clamp seat 20 with the central axis of the through hole 11 as the center of the circle, and the plurality of claws 21 can be synchronously moved close to the central axis of the through hole 11 or away from the central axis of the through hole 11. Preferably, the number of the claws 21 is 3.

[0030] In this embodiment, the tool mechanism 3 includes a transverse moving component 22 and an axial moving component 23 . The transverse moving component 22 is connected to the working part of the axial moving component 23 and the two are arranged perpendicular to each other. A processing cutter disc 24 is arranged on the transverse moving component 22 .

[0031] Specifically, the axial movement component 23 includes an axial shifting pallet and an axial shifting slide arranged on the axial shifting pallet, and an axial shifting driver for driving the axial shifting slide to move along the length direction of the axial shifting pallet is arranged on the machine tool base 1. The transverse movement component 22 is connected to the axial shifting slide, and the transverse movement component 22 includes a transverse shifting pallet and a transverse shifting slide arranged on the transverse shifting pallet. The machine tool base 1 is provided with a transverse shifting driver for driving the transverse shifting slide to move along the length direction of the transverse shifting pallet, and the processing tool disc 24 is connected to the transverse movement component 22.

[0032] The axial drive and the transverse drive can both be oil cylinders, air cylinders, or motors. When they are motors, they need to cooperate with screw rods and screw nuts to drive the movement of the slide. Those skilled in the art should understand that no matter which of the above-mentioned power sources is used, the structure is prior art.

[0033] The axial shift driver drives the axial shift slide to move downward or upward. Since the transverse moving component 22 is connected to the axial shift slide, it will work together with the axial shift slide. When it reaches the specified height, the axial shift slide stops moving, and the transverse moving driver drives the transverse moving slide to move toward the side of the fixture seat 20, so that the processing tool disc 24 can act on the outer surface of the lower end to achieve cutting.

[0034] The working principle of the utility model is as follows: when processing parts, the two ends of the part are fixed by the clamping base 2 and the ejector assembly 7, and then the tool mechanism 3 is moved to process the part of the part close to the ejector assembly 7 first. When the tool mechanism 3 has completed cutting a part of the part, the spindle 5 will start to move toward the middle part of the part, so that the ejector 10 will move relatively and shrink into the inner cavity 6, so that the spindle 5 wraps the processed part of the part, and then the fixture assembly 8 works to clamp the part, and the tool mechanism 3 starts to cut the unfinished part of the part close to the fixture assembly 8, and this cycle is repeated until the part is processed.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although more terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A machine tool for processing slender shaft parts, comprising a machine tool base (1), a clamping base (2) being arranged on the machine tool base (1), a tool mechanism (3) for parts processing and a thimble (10) clamping mechanism (4) being arranged on the machine tool base (1), the thimble (10) clamping mechanism (4) being capable of linear movement towards or away from the clamping base (2), characterized in that: The ejector (10) clamp mechanism (4) comprises a main shaft (5), wherein the main shaft (5) has an inner cavity (6) opened toward a side of a clamping base (2), wherein an ejector assembly (7) which can be telescopically moved along the length direction of the inner cavity (6) is arranged in the inner cavity (6), and a clamp assembly (8) for fixing parts is arranged on the main shaft (5), wherein the clamp assembly (8) is arranged on one side of an opening of the inner cavity (6), and a supporting portion of the clamp assembly (8) is distributed around the ejector assembly (7).

2. A slender shaft parts processing machine tool according to claim 1, characterized in that: The ejector assembly (7) comprises a transmission cylinder (9) and an ejector (10). The transmission cylinder (9) is distributed in the inner cavity (6) in a long strip shape, and a through hole (11) for the working part of the ejector (10) to pass through is provided on the end of one side of the transmission cylinder (9) facing the clamping base (2). The ejector (10) can reciprocate in the transmission cylinder (9) and pass through the through hole (11) or retract into the transmission cylinder (9).

3. A slender shaft parts processing machine tool according to claim 2, characterized in that: The ejector pin (10) comprises a needle body (12), the front end of the needle body (12) is a tip portion (13) for holding a workpiece, and the rear end of the ejector pin (10) has a radially protruding sealing ring platform (14) in sealing contact with the inner wall of the transmission cylinder body (9).

4. The machine tool for processing slender shaft parts according to claim 3, characterized in that: A chamber (15) is formed between the sealing ring platform (14) and an end of the transmission cylinder body (9) away from the through hole (11), and an inlet pipe (16) and an outlet pipe (17) which are connected to the interior of the chamber (15) are provided on the transmission cylinder body (9).

5. The machine tool for processing slender shaft parts according to claim 3, characterized in that: The needle body (12) and the sealing ring platform (14) can be integrally formed or detachably connected.

6. The machine tool for processing slender shaft parts according to claim 3, characterized in that: A plurality of evenly distributed sealing grooves (18) are provided on the outer surface of the sealing ring platform (14), and a sealing ring (19) is arranged in each of the sealing grooves (18).

7. The machine tool for processing slender shaft parts according to claim 3, characterized in that: The diameter of the through hole (11) is smaller than the diameter of the sealing ring platform (14).

8. The machine tool for processing slender shaft parts according to claim 2, characterized in that: The clamp assembly (8) comprises a clamp seat (20) and a plurality of claws (21) arranged on the clamp seat (20), wherein the plurality of claws (21) are evenly distributed on the clamp seat (20) in a circumferential direction with the central axis of the through hole (11) as the center, and the plurality of claws (21) can be synchronously moved closer to the central axis of the through hole (11) or away from the central axis of the through hole (11).

9. The machine tool for processing slender shaft parts according to claim 1, characterized in that: The tool mechanism (3) comprises a transverse moving component (22) and an axial moving component (23); the transverse moving component (22) is connected to the working part of the axial moving component (23) and the two are arranged perpendicular to each other; and a processing cutter disc (24) is arranged on the transverse moving component (22).

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