Hydraulic tailstock locking device

Abstract

The utility model provides a hydraulic tailstock locking device, and belongs to the technical field of machining. The problems that in the prior art, clamping force is unstable, and operation is tedious are solved. The tail seat comprises a tail seat base, a hard rail seat and a tail seat body, a piston cylinder body is formed above the hard rail seat, a piston cavity is formed in the center of the piston cylinder body, a brake block is installed in the piston cavity, the end of the brake block is connected with a piston rod, a through hole is formed in the tail seat base, and the piston rod penetrates through the through hole. A sealing plate is fixed to the bottom of the tailstock base in a sealed mode, a gland is fixedly installed at the upper end of a piston cylinder body of the tailstock base, a first oil injection hole is formed in the side end face of the gland, a second oil injection hole is formed in the lower end of the gland, and the first oil injection hole is communicated with the second oil injection hole. A mounting block is formed at the top of the tailstock base, a mounting groove is formed in the bottom of the tailstock body, and the mounting block extends into the mounting groove to be fixedly connected. The device has the advantages of high automation degree, high precision, simple structure and wide application range.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, and relates to a hydraulic tail seat locking device. BACKGROUND

[0002] In the machining process, the tail seat is an important component for supporting and clamping workpieces, and its locking performance directly affects machining precision and workpiece quality. Traditional tail seat locking devices are mostly mechanical or manual, and have problems such as unstable clamping force and complicated operation. Therefore, it is of great significance to develop a hydraulic tail seat locking device with automation, high precision and high rigidity.

[0003] A machine tool tail seat locking device is disclosed in Chinese Patent No. CN205464372U, which comprises a locking device body connected to the tail seat, an eccentric shaft arranged in the locking device body, a gasket arranged on the upper end of the eccentric shaft, a handle inner sleeve arranged on the eccentric shaft end above the gasket, the handle inner sleeve being installed on a handle seat, a handle being arranged on the handle seat, the handle seat being connected to the gasket through a small shaft, a locking block being arranged at the lower part of the locking device body, a supporting plate being arranged below the locking block, the locking device body being connected to the tail seat through a fourth screw and a second conical pin, two copper sleeves being arranged between the eccentric shaft and the locking device body, the copper sleeves being fixedly connected to the locking device body through a first screw, the lower end of the eccentric shaft extending into the locking block and being provided with a sliding block between the locking block, the supporting plate being fixedly installed on the locking block through a second screw, the gasket being fixedly connected to the locking device body through a third screw, a spring being arranged in the handle inner sleeve, the handle inner sleeve and the eccentric shaft being connected through a first conical pin, and the handle seat and the upper end shaft head of the eccentric shaft being arranged in cooperation.

[0004] In the machine tool tail seat locking device provided by the patent, the locking block is controlled by the handle rod to lock the component. This structure needs manual control of the handle, which is relatively complicated. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art and provides a hydraulic tail seat locking device.

[0006] The utility model discloses a hydraulic tail seat locking device can be realized through the following technical schemes: a hydraulic tail seat locking device, including tail seat base, hard rail seat and tail seat body, the hard rail seat top is formed with piston cylinder body, the piston cylinder body center is equipped with piston cavity, the piston cavity inside is installed with brake block, the brake block end is connected with piston rod, the tail seat base is equipped with through -hole and is equipped with through hole, and the piston rod is equipped with the through hole, the tail seat body lower extreme is equipped with the connecting hole and is equipped with the connecting hole, and the piston rod is equipped with the connecting hole, the tail seat base bottom is sealed and is fixed with sealing plate, the tail seat base piston cylinder body upper end is fixedly installed with gland, first oil injection hole is equipped on the gland side end surface, second oil injection hole is equipped on the gland lower extreme, first oil injection hole and second oil injection hole are linked together, the tail seat base top forms the mounting block, the tail seat body bottom is equipped with the mounting groove, and the mounting block is fixedly connected in the mounting groove.

[0007] In the hydraulic tail seat locking device, the tail seat body bottom is equipped with a placing groove.

[0008] In the hydraulic tail seat locking device, the brake block outer wall is in close contact with the inside of the piston cavity.

[0009] In the hydraulic tail seat locking device, the piston cavity two ends are equipped with sealing grooves, the sealing plate is formed with a first sealing ring, the gland is formed with a second sealing ring, and the first sealing ring and the second sealing ring are in close contact with the sealing grooves.

[0010] Compared with the prior art, the hydraulic tail seat locking device has the following beneficial effects:

[0011] 1. High degree of automation: the automatic locking and releasing of the tail seat are realized through the principle of hydraulics, without manual operation, and the machining efficiency is improved.

[0012] 2. High precision: the hydraulic locking method is adopted, the clamping force is stable and reliable, and the machining precision is effectively improved.

[0013] 3. Simple structure: the device structure is compact and simple, easy to install and maintain.

[0014] 4. Wide application range: it can be widely applied to machine tool equipment such as numerical control lathes and machining centers, and meets different machining requirements. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the explosion structure schematic diagram of the utility model;

[0017] Figure 3 It is the tail seat base structure schematic diagram;

[0018] Figure 4 It is a schematic diagram of the hard rail seat structure;

[0019] Figure 5 This is a schematic diagram of the tailstock body structure when viewed from above;

[0020] Figure 6 It is a schematic diagram of the gland structure when viewed from above.

[0021] In the figure: 1. Tailstock base; 11. Through hole; 12. Mounting block; 2. Hard rail seat; 21. Piston cylinder; 22. Piston chamber; 221. Sealing groove; 3. Tailstock body; 31. Connecting hole; 32. Placement groove; 33. Mounting groove; 4. Brake block; 5. Piston rod; 6. Sealing plate; 61. First sealing ring; 7. Gland; 71. First oil filling hole; 72. Second oil filling hole; 73. Second sealing ring. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figures 1 to 6 As shown, this embodiment includes a tailstock base 1, a hard rail base 2 and a tailstock body 3. Two piston cylinders 21 are formed above the hard rail base 2. The centers of the two piston cylinders 21 in the hard rail base 2 are each provided with a piston cavity 22. The brake shoe 4 is mounted inside the piston cavity 22. The piston rod 5 is fixedly connected to the end of the brake shoe 4. A through hole 11 is provided in the tailstock base 1. A connecting hole 31 is provided at the lower end of the tailstock body 3. The upper end of the piston rod 5 passes through the through hole 11 and the connecting hole 31 in sequence and the upper end of the piston rod 5 is located inside the tailstock body 3. A sealing plate 6 is mounted on the lower end of the piston cavity 22 and the sealing plate 6 is located at the lower end of the piston cylinder 21. A pressure cover 7 is mounted on the movable The upper end of the plug cavity 22 and the pressure cover 7 are fixedly mounted on the upper end of the piston cylinder body 21. A first oil filling hole 71 is provided on the side end surface of the pressure cover 7, and a second oil filling hole 72 is provided at the lower end of the pressure cover 7. The first oil filling hole 71 and the second oil filling hole 72 are connected, and the first oil filling hole 71 and the second oil filling hole 72 are L-shaped. The second oil filling hole 72 is connected to the inside of the piston cavity 22. Through the first oil filling hole 71 and the second oil filling hole 72, hydraulic oil can be injected into the piston cavity 22. A mounting block 12 is formed on the top of the tailstock base 1, and a mounting groove 33 is provided at the bottom of the tailstock body 3. The mounting block 12 extends into the mounting groove 33 to fix the tailstock base 1 to the tailstock body 3.

[0024] Specifically, such as Figures 1 to 6 As shown, the gland 7 and the sealing plate 6 have the same size and shape, and the gland 7 is thicker than the sealing plate 6 .

[0025] To elaborate further, Figures 1 to 2As shown, the outer wall of the brake block 4 is in close contact with the interior of the piston cavity 22.

[0026] Further details, as Figures 1 to 6 As shown, the piston cavity 22 is provided with a sealing groove 221 at both ends, and the sealing plate 6 is formed with a first sealing ring 61, and the gland 7 is formed with a second sealing ring, the first sealing ring 61 and the second sealing ring are in close contact with the sealing groove 221, and the gland 7 and the sealing plate 6 are respectively sealed to the piston cavity 22 through the first sealing ring 61 and the second sealing ring.

[0027] The working principle of the utility model is as follows: in use, first, inject hydraulic oil into the piston cavity 22 through the first oil injection hole 71 and the second oil injection hole 72, the hydraulic oil pushes the piston rod 5 to rise, the piston rod 5 drives the brake block 4 to move upward, so that the hard rail seat 2 is clamped by the tail seat base 1 and the brake block 4; when it is needed to release the locking, stop injecting oil, the piston rod 5 drives the brake block 4 to move downward, the brake block 4 is separated from the piston cavity 22 of the hard rail seat 2, and the tail seat base 1 returns to the free movement state.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

[0029] Although various terms are used frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the utility model; any kind of additional limitation by interpreting them is contrary to the spirit of the utility model.

Claims

1. A hydraulic tailstock chucking device, comprising a tailstock base (1), a hard rail seat (2) and a tailstock body (3), characterized in that: The hard rail seat (2) is formed with a piston cylinder (21) above it, the piston cylinder (21) is provided with a piston cavity (22) in the center, the piston cavity (22) is internally provided with a brake block (4), the brake block (4) is connected with a piston rod (5) at the end, the tail seat base (1) is provided with a through hole (11) and the piston rod (5) is arranged through the through hole (11), the tail seat body (3) is provided with a connecting hole (31) at the lower end and the piston rod (5) is arranged through the connecting hole (31), the tail seat base (1) is fixedly provided with a sealing plate (6) at the bottom, the tail seat base (1) is fixedly provided with a gland (7) at the upper end of the piston cylinder (21), the gland (7) is provided with a first oil injection hole (71) at the side end face, the gland (7) is provided with a second oil injection hole (72) at the lower end, the first oil injection hole (71) and the second oil injection hole (72) are communicated, the tail seat base (1) is formed with a mounting block (12) at the top, the tail seat body (3) is provided with a mounting groove (33) at the bottom, and the mounting block (12) is fixedly connected by extending into the mounting groove (33).

2. The hydraulic tailstock chucking device according to claim 1, wherein: The tail seat body (3) is provided with a placing groove (32) at the bottom.

3. The hydraulic tailstock chucking device according to claim 1, wherein: The brake block (4) is in close contact with the inside of the piston cavity (22).

4. The hydraulic tailstock chuck apparatus of claim 1, wherein: The piston cavity (22) is provided with a sealing groove (221) at both ends, the sealing plate (6) is formed with a first sealing ring (61), the gland (7) is formed with a second sealing ring, and the first sealing ring (61) and the second sealing ring are in close contact with the sealing groove (221).

Images