A lathe spindle pneumatic rotation locking mechanism

Abstract

The utility model discloses a lathe main shaft pneumatic rotation locking mechanism relates to lathe technical field, including shell and back cover, the shell and back cover inside be provided with the air pressure chamber, the inside of air pressure chamber is provided with the movable cylinder piston, the air pressure chamber is divided into cavity one and cavity two through cylinder piston, and the shell still is provided with two inlet and outlet gas nozzles of communicating with air pressure chamber, can respectively control cavity one and cavity two's air inlet or exhaust through two inlet and outlet gas nozzles, the inside of cylinder piston is connected with the inner rotation sleeve through the bearing. The utility model needs the main shaft locking, through injecting air to the air cavity, the cylinder piston same inner rotation sleeve together along the axial backward sliding, the inner inclined surface of inner rotation sleeve slides to the high point of puller, and the one end of puller is under the action of inner rotation sleeve and does lever movement around puller fulcrum, and then promotes the forward movement of front push locking connecting rod, completes the locking of the chuck action of electric main shaft, and the setting of this structure has good locking effect, and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of lathe technology, specifically a pneumatic rotary locking mechanism for lathe spindles. Background Technology

[0002] In the field of modern machining, lathes, as important metal cutting equipment, rely heavily on the precision and stability of their spindle systems to determine the quality of workpiece machining. With the development of industrial technology, the requirements for lathe spindles are becoming increasingly stringent, demanding not only high speed and high precision but also rapid response and a stable and reliable locking mechanism. Traditional lathe spindle locking mechanisms typically employ manual or hydraulic methods, but these methods have certain limitations: manual locking is inefficient and inconsistent; while hydraulic systems can achieve automated operation, they suffer from high maintenance costs due to oil leakage and contamination, and their slow response speed makes them unsuitable for high-speed precision machining applications requiring frequent start-stop cycles. Therefore, this invention proposes a pneumatic rotary locking mechanism for lathe spindles. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pneumatic rotary locking mechanism for lathe spindles.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pneumatic rotary locking mechanism for a lathe spindle includes a housing and a rear cover. A pneumatic chamber is provided inside the housing and rear cover. A movable cylinder piston is installed inside the pneumatic chamber, dividing the chamber into two sections: a first section and a second section. The housing also has two air inlets / outlets communicating with the pneumatic chamber, allowing for the control of air intake or exhaust in sections one and two, respectively. An inner rotating sleeve is connected to the cylinder piston via a bearing. Air is injected into or extracted from sections one and two through the air inlets / outlets to control the axial forward and backward movement of the cylinder piston. The cylinder piston contains a bearing and an inner rotating sleeve assembly, both of which can move axially with the cylinder piston. The inner rotating sleeve can also rotate at high speed with the lathe spindle.

[0006] The inner rotating sleeve also has a pawl sleeve inside, which is fitted onto the lathe spindle and can rotate with it. Inside the pawl sleeve, there is a pawl that can only rotate around the pawl fulcrum, connected by a pawl fulcrum. The lathe spindle has a rear sliding sleeve and a front-pushing locking link inside. Both the pawl and the pawl sleeve can rotate with the lathe spindle. When the spindle needs to be locked, air is injected into the air chamber, and the cylinder piston slides axially backward together with the inner rotating sleeve. The inner inclined surface of the inner rotating sleeve slides to the high point of the pawl. One end of the pawl performs a lever motion around the pawl fulcrum under the action of the inner rotating sleeve, thereby pushing the front-pushing locking link forward to complete the locking action of the electric spindle. This structure has a good locking effect and high efficiency.

[0007] Preferably, the outer wall of the rear sliding sleeve is provided with a stepped top groove structure, and one end of the pawl abuts against the inside of the top groove structure.

[0008] Preferably, one side of the inner rotating sleeve is provided with an inner inclined surface.

[0009] Preferably, one end of the lathe spindle is keyed to a spindle brake disc, and the other end of the lathe spindle is fitted with a tension adjustment nut.

[0010] Preferably, a water receiving box is fixedly installed on one side of the rear cover, and a feeding support frame is provided inside the water receiving box.

[0011] Preferably, a position sensing needle is fixedly connected to the outer side of the cylinder piston, and the position sensing needle is connected to an external sensor for sensing the movement position of the cylinder piston.

[0012] Beneficial effects:

[0013] Compared with existing technologies, this lathe spindle pneumatic rotary locking mechanism has the following advantages:

[0014] This invention controls the axial forward and backward movement of the cylinder piston by injecting or extracting air into or from chambers one and two via air inlets and outlets, respectively. The cylinder piston contains bearings and an inner rotating sleeve, both of which move axially with the piston. The inner rotating sleeve rotates at high speed with the lathe spindle. Additionally, the provided claw and claw sleeve rotate with the lathe spindle. When spindle locking is required, air is injected into the air chamber, causing the cylinder piston and inner rotating sleeve to slide axially backward. The inner inclined surface of the inner rotating sleeve slides to the high point of the claw, and one end of the claw, under the action of the inner rotating sleeve, performs a lever motion around the claw fulcrum, thereby pushing the forward locking linkage forward to complete the locking action of the electric spindle. This structure provides good locking effect and high efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a partial cross-sectional structural diagram of the present invention.

[0020] In the picture:

[0021] 1. Outer shell; 2. Rear cover; 3. Cylinder piston; 4. Inlet / outlet nozzle; 5. Bearing; 6. Inner rotating sleeve; 7. Paw sleeve; 8. Lathe spindle; 9. Paw; 10. Rear sliding sleeve; 11. Front push locking linkage; 12. Spindle brake disc; 13. Tightening adjustment nut; 14. Water collection box; 15. Position sensing needle; 301. Cavity 1; 302. Cavity 2; 701. Paw fulcrum; 1001. Top groove structure; 601. Inner inclined surface; 1401. Feeding support frame. 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 1-4As shown, this utility model provides a technical solution: a pneumatic rotary locking mechanism for a lathe spindle, including a housing 1 and a rear cover 2. A pneumatic chamber is provided inside the housing 1 and the rear cover 2. A movable cylinder piston 3 is installed inside the pneumatic chamber, dividing the pneumatic chamber into a first cavity 301 and a second cavity 302. The housing 1 is also provided with two air inlets and outlets 4 communicating with the pneumatic chamber. The air inlets and outlets 4 can respectively control the intake and exhaust of the first cavity 301 and the second cavity 302. The cylinder piston 3 is connected to an inner rotating sleeve 6 via a bearing 5. An inner inclined surface 601 is provided on one side of the inner rotating sleeve 6. Air is injected or extracted into the first cavity 301 and the second cavity 302 through the air inlet and outlet nozzles 4, respectively, to control the forward and backward movement of the cylinder piston 3 along the axial direction. The cylinder piston 3 is equipped with a bearing 5 and an inner rotating sleeve 6, which can move along the axial direction together with the cylinder piston 3. The inner rotating sleeve 6 can rotate at high speed together with the lathe spindle 8.

[0024] The inner rotating sleeve 6 of this utility model also has a pawl sleeve 7 inside. The pawl sleeve 7 is sleeved on the lathe spindle 8 and can rotate with it. The pawl sleeve 7 is connected to a pawl 9 that can only rotate around the pawl fulcrum 701 through a pawl fulcrum 701. The lathe spindle 8 has a rear sliding sleeve 10 and a front pushing locking connecting rod 11 inside. One end of the lathe spindle 8 is also keyed to a spindle brake disc 12, and the other end of the lathe spindle 8 is sleeved with a tension adjusting nut 13. The pawl 9 and the Both the claw sleeve 7 and the inner rotating sleeve 6 can rotate together with the lathe spindle 8. When the spindle needs to be locked, air is injected into the air chamber 301, and the cylinder piston 3 slides backward along the axis together with the inner rotating sleeve 6. The inner inclined surface 601 of the inner rotating sleeve 6 slides to the high point of the claw 9. Under the action of the inner rotating sleeve 6, one end of the claw 9 makes a lever movement around the claw fulcrum 701, which in turn pushes the forward locking linkage 11 to move forward, completing the locking action of the electric spindle. This structure has a good locking effect and high efficiency.

[0025] Please refer to the following carefully. Figure 4 The outer wall of the rear sliding sleeve 10 is provided with a stepped top groove structure 1001, and one end of the pawl 9 abuts against the inside of the top groove structure 801.

[0026] Please refer to the following carefully. Figure 1 and Figure 2 A water receiving box 14 is fixedly installed on one side of the rear cover 2. A feeding support frame 1401 is provided inside the water receiving box 14. A position sensing needle 15 is fixedly connected to the outer side of the cylinder piston 3. The position sensing needle 15 is connected to an external sensor to sense the movement position of the cylinder piston 3.

[0027] Working principle: Air is injected or extracted into chamber 301 and chamber 302 through the air inlet / outlet nozzles 4 to control the axial back-and-forth movement of cylinder piston 3. Bearing 5 and inner rotating sleeve 6 are installed inside cylinder piston 3, both moving axially with cylinder piston 3. Inner rotating sleeve 6 rotates at high speed with lathe spindle 8. Additionally, the puller 9 and puller sleeve 7 rotate with lathe spindle 8. When spindle locking is required, air is injected into air chamber 301, causing cylinder piston 3 and inner rotating sleeve 6 to slide axially backward. The inner inclined surface 601 of inner rotating sleeve 6 slides to the high point of puller 9. One end of puller 9, under the action of inner rotating sleeve 6, performs lever motion around puller fulcrum 701, thereby pushing the forward locking linkage 11 forward, completing the locking action of the electric spindle's latch (the electric spindle's latch is a universal design and is omitted here).

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 pneumatic rotary locking mechanism for a lathe spindle, comprising a housing (1) and a rear cover (2), characterized in that: The outer shell (1) and the rear cover (2) are provided with a pneumatic chamber. The pneumatic chamber is provided with a movable cylinder piston (3). The pneumatic chamber is divided into a cavity one (301) and a cavity two (302) by the cylinder piston (3). The outer shell (1) is also provided with two air inlets and outlets (4) that communicate with the pneumatic chamber. The air inlets and outlets (4) can be controlled to allow air to enter or exit the cavity one (301) and the cavity two (302) respectively. The cylinder piston (3) is connected to an inner rotating sleeve (6) through a bearing (5). The inner rotating sleeve (6) is also provided with a pawl sleeve (7), which is sleeved on the lathe spindle (8) and can rotate with it. The pawl sleeve (7) is connected to a pawl (9) that can only rotate around the pawl fulcrum (701) through the pawl fulcrum (701). The lathe spindle (8) is provided with a rear sliding sleeve (10) and a front push locking link (11).

2. The pneumatic rotary locking mechanism for a lathe spindle according to claim 1, characterized in that: The outer wall of the rear sliding sleeve (10) is provided with a stepped top groove structure (1001), and one end of the pawl (9) abuts against the inside of the top groove structure (1001).

3. The pneumatic rotary locking mechanism for a lathe spindle according to claim 1, characterized in that: An inner inclined surface (601) is provided on one side of the inner rotating sleeve (6).

4. The pneumatic rotary locking mechanism for a lathe spindle according to claim 1, characterized in that: One end of the lathe spindle (8) is also keyed to a spindle brake disc (12), and the other end of the lathe spindle (8) is fitted with a tension adjustment nut (13).

5. A pneumatic rotary locking mechanism for a lathe spindle according to claim 1, characterized in that: A water receiving box (14) is fixedly installed on one side of the rear cover (2), and a feeding support frame (1401) is provided inside the water receiving box (14).

6. A pneumatic rotary locking mechanism for a lathe spindle according to claim 1, characterized in that: A position sensing needle (15) is fixedly connected to the outer side of the cylinder piston (3). The position sensing needle (15) is connected to an external sensor for sensing the movement position of the cylinder piston (3).

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