Workpiece push-out structure and machine tool

Abstract

The utility model discloses a workpiece push-out structure and a machine tool, and belongs to the field of machine tools, the workpiece push-out structure comprises a spindle box, the spindle box comprises a box body, a pull rod and a clamp, the pull rod is installed in the box body, the clamp is installed in the box body, the clamp and the pull rod are coaxially arranged, and the clamp is used for clamping a workpiece; the driving structure comprises a cylinder which is fixed outside the box body, a push rod assembly is slidably installed inside the pull rod, the push rod assembly and the pull rod are coaxially arranged, and the cylinder pushes the push rod assembly to slide relative to the pull rod to eject out a workpiece on the clamp. The cylinder is used as a power source, a rotary joint is not needed, and the pushing action speed is stable; the air cylinder is fixed outside the box body, and the part machining precision requirement is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe field especially is related to workpiece push out structure. BACKGROUND

[0002] After the part is finished by lathe, needs to push out the part from the fixture. The existing push out structure adopts pneumatic piston as power, and the piston cylinder is installed in the pull rod. The part processing precision requirement is higher. The pushing material action speed is unstable, and the speed is fast and slow. The rotating joint is used for connecting the gas source, and the device cost is high. UTILITY MODEL CONTENTS

[0003] In order to overcome the insufficient of prior art, one of the purposes of the utility model is to provide a workpiece push out structure which does not use pneumatic piston as power source and does not need rotating joint.

[0004] In order to overcome the insufficient of prior art, one of the purposes of the utility model is to provide a workpiece push out structure which does not use pneumatic piston as power source and does not need rotating joint.

[0005] One of the purposes of the utility model is realized by the following technical scheme:

[0006] The workpiece push out structure comprises a spindle box, the spindle box comprises a box body, a pull rod and a clamp, the pull rod is installed in the box body, the clamp is installed on the box body, the clamp is coaxially arranged with the pull rod, the clamp is used for clamping a workpiece, the workpiece push out structure further comprises a driving structure and a push rod assembly, the driving structure comprises a pneumatic cylinder, the pneumatic cylinder is fixed outside the box body, the push rod assembly is slidably installed in the pull rod, the push rod assembly is coaxially arranged with the pull rod, and the pneumatic cylinder drives the push rod assembly to slide relative to the pull rod to push the workpiece on the clamp.

[0007] Further, the driving structure further comprises a push plate, the push plate is fixed to the output end of the pneumatic cylinder, the push plate is perpendicular to the extension direction of the pneumatic cylinder, and the pneumatic cylinder drives the push plate to abut against the push rod assembly.

[0008] Further, the driving structure further comprises a buffer pad, the buffer pad is fixed to the push plate, and the buffer pad abuts against the push rod assembly.

[0009] Further, the spindle box further comprises a first supporting ring and a second supporting ring, the first supporting ring is fixed to one end of the pull rod close to the push plate, the second supporting ring is fixed to the inside of the pull rod, and the push rod assembly is slidably installed on the first supporting ring and the second supporting ring.

[0010] Further, the workpiece push out structure further comprises a resilient member, and the resilient member abuts against the push rod assembly and the pull rod at two ends respectively.

[0011] Further, the elastic member is a spring, the push rod assembly comprises a top rod and a limiting ring fixed to the top rod, the spring is sleeved on the top rod, one end of the spring abuts against the limiting ring, and the other end of the spring abuts against the pull rod.

[0012] Further, the top rod comprises a first top rod and a second top rod fixedly connected with the first top rod, and the first top rod and the second top rod are coaxially arranged.

[0013] Further, the main shaft box further comprises an adapter, and the clamp is connected with the pull rod through the adapter.

[0014] Further, the cylinder is parallel to the pull rod.

[0015] The second purpose of the utility model is achieved by the following technical scheme:

[0016] The machine tool comprises the workpiece pushing-out structure.

[0017] Compared with the prior art, the driving structure of the workpiece pushing-out structure comprises a cylinder, the cylinder is fixed to the outside of the box body, the push rod assembly is slidingly installed in the pull rod, the push rod assembly and the pull rod are coaxially arranged, the cylinder drives the push rod assembly to slide relative to the pull rod to push out the workpiece on the clamp, the cylinder is used as a power source, a rotary joint is not needed, and the pushing action speed is stable; the cylinder is fixed to the outside of the box body, and the part machining precision requirement is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the workpiece not pushed out in the workpiece pushing-out structure of the utility model;

[0019] Figure 2 It is a sectional view of the workpiece not pushed out in the workpiece pushing-out structure of the utility model; Figure 1

[0020] It is a perspective view of the workpiece pushed out in the workpiece pushing-out structure of the utility model; Figure 3

[0021] It is a sectional view of the workpiece pushed out in the workpiece pushing-out structure of the utility model. Figure 4 Figure 3 In the drawing: 10, main shaft box; 11, box body; 12, clamp; 13, adapter; 14, pull rod; 15, first supporting ring; 16, fixed ring; 17, second supporting ring; 20, driving structure; 21, mounting plate; 22, cylinder; 23, push plate; 24, buffer pad; 30, push rod assembly; 31, first top rod; 32, second top rod; 33, limiting ring; 40, elastic member; 200, workpiece.

[0022] In the drawing: 10, main shaft box; 11, box body; 12, clamp; 13, adapter; 14, pull rod; 15, first supporting ring; 16, fixed ring; 17, second supporting ring; 20, driving structure; 21, mounting plate; 22, cylinder; 23, push plate; 24, buffer pad; 30, push rod assembly; 31, first top rod; 32, second top rod; 33, limiting ring; 40, elastic member; 200, workpiece. ​Detailed Implementation

[0023] 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.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 1 as well as Figure 2 The workpiece ejection structure is used to eject the machined workpiece 200 from the machine tool. The workpiece ejection structure includes a spindle box 10, a drive structure 20, a push rod assembly 30, and an elastic element 40.

[0027] The spindle box 10 includes a housing 11, a clamp 12, an adapter 13, a pull rod 14, a first support ring 15, a fixing ring 16, and a second support ring 17.

[0028] The box body 11 top is used for fixing the driving structure 20, the push rod assembly 30 and the elastic member 40 are installed in the box body 11 inside. Specifically, the clamp 12 is fixed to one end of the box body 11, the clamp 12 is used for clamping the workpiece 200. The pull rod 14 is installed in the box body 11 inside, the pull rod 14 is connected with the clamp 12 through the adapter 13, the pull rod 14, the adapter 13 and the clamp 12 are coaxially arranged. The first support ring 15 is fixed to the pull rod 14 inside, the fixing ring 16 is installed between the first support ring 15 and the adapter 13, the first support ring 15 is located in the groove, and the fixing ring 16 abuts against the first support ring 15 to position the first support ring 15 in the pull rod 14. The second support ring 17 is fixed to the end of the pull rod 14 away from the clamp 12. The first support ring 15 and the second support ring 17 are used for installing the push rod assembly 30.

[0029] The driving structure 20 includes the mounting plate 21, the air cylinder 22, the push plate 23 and the buffer pad 24. The mounting plate 21 is fixed to the outer surface of the top of the box body 11, and the air cylinder 22 is fixed to the mounting plate 21. The extension direction of the air cylinder 22 is parallel to the pull rod 14. The push plate 23 is fixed to the output end of the air cylinder 22, and the push plate 23 is perpendicular to the extension direction of the air cylinder 22. The air cylinder 22 drives the push plate 23 to abut against the push rod assembly 30. The buffer pad 24 is fixed to the push plate 23, and the buffer pad 24 abuts against the push rod assembly 30 to prevent the push rod assembly 30 from being scratched.

[0030] The push rod assembly 30 includes the first top rod 31, the second top rod 32 and the limiting ring 33. The first top rod 31 is fixedly connected with the second top rod 32, the top rod is taken as a two-section structure, the structure strength of the top rod can be increased, and the top rod is prevented from being too long to be bent and deformed under stress. The limiting ring 33 is fixed to the first top rod 31.

[0031] One end of the elastic member 40 abuts against the push rod assembly 30, and the other end abuts against the pull rod 14, so as to provide the push rod assembly 30 with a reset elastic force. Specifically, the elastic member 40 is a spring, the elastic member 40 is sleeved on the first top rod 31, one end of the elastic member 40 abuts against the limiting ring 33, and the other end abuts against the first support ring 15.

[0032] Please continue to refer to Figure 3 and Figure 4 When the workpiece 200 is machined, the air cylinder 22 is retracted to drive the push plate 23 to move, the buffer pad 24 abuts against the push rod assembly 30, the push rod assembly 30 moves in the pull rod 14 to abut against the workpiece 200, and the workpiece 200 is pushed out of the clamp 12. At this time, the elastic member 40 is in a compressed state, the air cylinder 22 continues to extend, the push plate 23 is separated from the push rod assembly 30, the elastic member 40 restores the deformation, and drives the push rod assembly 30 to reset.

[0033] The workpiece pushing-out structure adopts the air cylinder 22 as a power source, does not need a rotary joint, and has stable pushing action speed; the air cylinder 22 is fixed outside the box body 11, and has low part machining precision requirement.

[0034] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of deformations and improvements and evolutions can be made, which are equivalent modifications and evolutions of the above embodiments according to the essential technology of the utility model, and these all belong to the protection range of the utility model.

Claims

1. A workpiece pushing-out structure, comprising a spindle box, the spindle box comprising a box body, a pull rod and a clamp, the pull rod being installed inside the box body, the clamp being installed on the box body, the clamp being coaxially arranged with the pull rod, the clamp being used for clamping a workpiece, characterized in that: The workpiece pushing-out structure further comprises a driving structure and a push rod assembly, the driving structure comprises a cylinder fixed outside the box body, the push rod assembly is slidingly installed inside the pull rod, the push rod assembly is coaxially arranged with the pull rod, the cylinder pushes the push rod assembly to slide relative to the pull rod to push out the workpiece on the clamp.

2. The work pushing-out structure according to claim 1, characterized by: The driving structure further comprises a push plate fixed to the output end of the cylinder, the push plate is perpendicular to the extension direction of the cylinder, the cylinder drives the push plate to abut against the push rod assembly.

3. The work pushing-out structure according to claim 2, characterized by: The driving structure further comprises a buffer pad fixed to the push plate, the buffer pad abuts against the push rod assembly.

4. The work pushing-out structure according to claim 2, characterized by: The spindle box further comprises a first support ring and a second support ring, the first support ring is fixed to one end of the pull rod close to the push plate, the second support ring is fixed inside the pull rod, the push rod assembly is slidingly installed on the first support ring and the second support ring.

5. The work pushing-out structure according to claim 1, characterized by: The workpiece pushing-out structure further comprises a spring, the spring abuts against the push rod assembly and the pull rod at both ends.

6. The work pushing-out structure according to claim 5, characterized by: The spring is a spring, the push rod assembly comprises a top rod and a limiting ring fixed to the top rod, the spring is sleeved on the top rod, one end of the spring abuts against the limiting ring, and the other end abuts against the pull rod.

7. The work pushing-out structure according to claim 6, characterized by: The top rod comprises a first top rod and a second top rod fixedly connected with the first top rod, the first top rod and the second top rod are coaxially arranged.

8. The work pushing-out structure according to claim 1, characterized by: The spindle box further comprises an adapter, the clamp is connected with the pull rod through the adapter.

9. The work pushing-out structure according to claim 1, characterized by: The cylinder is parallel to the pull rod.

10. Machine tool, characterized in that: The workpiece pushing-out structure comprises the workpiece pushing-out structure according to any one of claims 1-9. The workpiece pushing-out structure comprises the workpiece pushing-out structure according to any one of claims 1-9.

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