Novel tailstock system

Abstract

The utility model relates to the technical field of numerical control roll grinders, in particular to a novel tailstock system which can improve moving stability, reduce occupied space and is convenient to install, a hydraulic oil cylinder is installed on the upper portion of a tailstock body, and a retaining rack, a tailstock moving rack and a center frame moving rack are sequentially arranged on a lathe bed side by side at intervals. A rear-mounted driving mechanism is arranged at the rear end of the lower part of the tailstock body, the rear-mounted driving mechanism comprises a driving motor and a speed reducer, and a gear matched with the tailstock moving rack is mounted on an output shaft of the speed reducer; the hydraulic oil cylinder is an inverted oil cylinder, the inverted oil cylinder comprises a shaft sleeve installed on the tailstock body in a sliding mode, a cavity is formed in the shaft sleeve, a cylinder sleeve is installed in the cavity, a front sealing plate is installed at the front end of the cylinder sleeve, a rear sealing plate is installed at the rear end of the cylinder sleeve so that a piston cavity can be formed in the cylinder sleeve, the rear sealing plate is fixedly connected with the rear end of the shaft sleeve, and a piston is installed in the piston cavity. A piston rod connected with the piston penetrates through the rear sealing plate to be connected with a fixedly-arranged retaining plate, and a tip is installed at the front end of the shaft sleeve.

Description

Technical Field

[0001] This utility model relates to the field of CNC roll grinding machine technology, specifically a novel tailstock system. Background Technology

[0002] The tailstock plays a crucial role in the mechanism of a precision grinding machine, with its main functions including centering, auxiliary support, and clamping. It requires good accuracy retention, high rigidity, and excellent vibration resistance. It mainly consists of a lower moving mechanism and an upper hydraulic drive mechanism; its movement stability is relatively poor, and the upper part occupies too much space. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides a novel tailstock system that improves mobility stability, reduces space requirements, and is easy to install.

[0004] The technical solution is as follows: A novel tailstock system includes a bed and a tailstock body. A hydraulic cylinder is installed on the upper part of the tailstock body. The bed is characterized by having a backstop rack, a tailstock moving rack, and a center frame moving rack arranged side-by-side at intervals. A rear-mounted drive mechanism is located at the lower rear end of the tailstock body. The rear-mounted drive mechanism includes a drive motor and a reducer. A gear that meshes with the tailstock moving rack is mounted on the output shaft of the reducer. The hydraulic cylinder is an inverted cylinder, comprising a bushing slidably mounted on the tailstock body. A cavity is formed within the bushing, and a cylinder sleeve is installed within the cavity. A front sealing plate is installed at the front end of the cylinder sleeve, and a rear sealing plate is installed at the rear end, forming a piston chamber. The rear sealing plate is fixedly connected to the rear end of the bushing. A piston is installed within the piston chamber. The piston rod connected to the piston passes through the backstop plate fixedly mounted on the rear sealing plate. A center point is installed at the front end of the bushing.

[0005] A further feature is that the anti-reverse rack is integrally formed with the bed;

[0006] The bed is provided with a V-shaped guide rail, and the central frame moving rack is located at the center of the V-shaped guide rail;

[0007] The front end of the bushing is connected to the front end of the tailstock body by a circular bellows cover.

[0008] The tip is bolted to the front end of the bushing.

[0009] With this invention, the tailstock moving rack is set in the middle position and a rear-mounted drive mechanism is adopted to minimize the overturning moment and ensure smooth reciprocating movement of the tailstock. The hydraulic cylinder adopts a unique inverted internal oil inlet structure, that is, oil is introduced through the piston rod, which occupies little space and is easy to install. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the tailstock structure;

[0012] Figure 3 This is a schematic diagram of an inverted hydraulic cylinder structure. Detailed Implementation

[0013] See Figure 1 , Figure 2 , Figure 3 As shown, a novel tailstock system includes a bed 1 and a tailstock body 2. A hydraulic cylinder 3 is mounted on the upper part of the tailstock body 2. A backstop rack 4, a tailstock moving rack 5, and a center frame moving rack 6 are arranged side-by-side at intervals on the bed 1. The center frame moving rack 6 is integrated with the V-shaped guide rail on the bed 1, reducing space occupation, simplifying the center frame moving mechanism, and lowering costs. The backstop rack 4 is integrally formed with the bed 1, providing high load-bearing capacity. A locking mechanism on the tailstock body 2 is inserted into the backstop rack 4 to lock it, preventing backflow. A rear-mounted drive mechanism 7 is located at the lower rear end of the tailstock body 2, minimizing overturning moment, resulting in smoother reciprocating movement, less wear, and a longer service life. The rear-mounted drive mechanism 7 includes a drive motor 7-1 and a reducer 7-2. The output shaft of the reducer 7-2... The upper part is equipped with a gear 7-3 that cooperates with the tailstock moving rack 5; the hydraulic cylinder 3 is an inverted cylinder, which includes a bushing 3-1 that is slidably installed on the tailstock body 2. The bushing 3-1 has a cavity and a cylinder sleeve 3-2 is installed in the cavity. A front sealing plate 3-3 is installed at the front end of the cylinder sleeve 3-2 and a rear sealing plate 3-4 is installed at the rear end to form a piston chamber. The rear sealing plate 3-4 is fixedly connected to the rear end of the bushing 3-1. A piston 3-5 is installed in the piston chamber, which divides the piston chamber into a left piston chamber 3-6 and a right piston chamber 3-7. The piston rod 3-8 connected to the piston 3-5 passes through the rear sealing plate 3-4 and is connected to a fixed anti-reverse plate 3-9. A center 8 is installed at the front end of the bushing 3-1 by bolts. The dead center and the flat center can be interchanged as needed. The flat center is used when grinding the workpiece, and the dead center is used when grinding the workpiece.

[0014] The front end of bushing 3-1 is connected to the front end of tailstock body 2 by a circular bellows cover 9, which protects against moisture and dust, and improves service life.

[0015] The inverted hydraulic cylinder has two ports, 3-10 and 3-11, on its piston rod 3-8. Hydraulic oil enters through port 3-10, passes through the first oil passage to the right chamber 3-7 of the piston, and after the right chamber 3-7 is filled with pressurized oil, the piston 3-5 moves to the left. The hydraulic oil in the left chamber 3-6 of the piston is pressurized but depressurized, and flows out through port 3-11. Since the piston rod 3-8 is fixedly connected to the thrust plate 3-9, the piston rod 3-8 remains stationary, and the cylinder sleeve 3-2 moves to the right, allowing the bushing 3-1 to extend and thus achieve a tightening action. Conversely, when hydraulic oil enters through port 3-11, the piston 3-5 is locked and remains stationary, and the cylinder sleeve 3-2 moves to the left, allowing the bushing 3-1 to retract and thus release the piston. This drive method utilizes the piston rod for oil intake, occupies little space, and is easy to install.

Claims

1. A novel tailstock system, comprising a bed and a tailstock body, wherein a hydraulic cylinder is mounted on the upper part of the tailstock body, characterized in that, The machine bed is provided with a backstop rack, a tailstock moving rack, and a center frame moving rack arranged in parallel at intervals. A rear-mounted drive mechanism is provided at the lower rear end of the tailstock body. The rear-mounted drive mechanism includes a drive motor and a reducer. A gear that meshes with the tailstock moving rack is mounted on the output shaft of the reducer. The hydraulic cylinder is an inverted cylinder. The inverted cylinder includes a bushing that is slidably mounted on the tailstock body. A cavity is opened in the bushing and a cylinder sleeve is installed in the cavity. A front sealing plate is installed at the front end of the cylinder sleeve and a rear sealing plate is installed at the rear end to form a piston chamber. The rear sealing plate is fixedly connected to the rear end of the bushing. A piston is installed in the piston chamber. The piston rod connected to the piston passes through the backstop plate that is fixedly installed on the rear sealing plate. A center is installed at the front end of the bushing.

2. The novel tailstock system according to claim 1, characterized in that, The anti-reverse rack is integrally formed with the bed.

3. The novel tailstock system according to claim 1, characterized in that, The bed is equipped with a V-shaped guide rail, and the central frame moving rack is located at the center of the V-shaped guide rail.

4. The novel tailstock system according to claim 1, characterized in that, The front end of the bushing is connected to the front end of the tailstock body by a circular bellows cover.

5. A novel tailstock system according to claim 1, characterized in that, The tip is bolted to the front end of the bushing.

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