Hydraulic pressing device for rotary table of machine tool

Abstract

The utility model discloses a machine tool rotary table hydraulic pressing device which comprises a base and a hydraulic rotary table installed in the center of the top of the base, four pressing assemblies are arranged on the outer side of the hydraulic rotary table, and the pressing assemblies are connected to the hydraulic rotary table through sliding assemblies. The pressing assembly comprises a shell and a first hydraulic cylinder transversely arranged on the shell, the piston end of the first hydraulic cylinder penetrates through the side wall of the shell and then is connected with a lower pressing rod through a linkage assembly, and a guide sleeve sleeves a rod body of the upper half part of the lower pressing rod and is fixed in a through hole formed in the top of the shell; the lower end of the lower pressing rod penetrates through a through hole formed in the bottom of the shell and is connected with a pressing block. According to the utility model, the transversely arranged hydraulic cylinder is adopted, and the lower pressing rod is driven to descend through the linkage assembly, so that the pressing block is pressed on an object at the top of the hydraulic turntable, and the locking effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic clamping devices, and in particular to a hydraulic clamping device for a machine tool turntable. Background Technology

[0002] A hydraulic rotary table is a major component of a machine tool with a rotating table surface. It is used to clamp workpieces and achieve rotation and indexing positioning. It is suitable for machining tools where both the cutting tool and the workpiece can rotate. During the machining process, after the hydraulic rotary table is precisely positioned or indexed, it needs to be kept locked to achieve stable clamping of the workpiece, thereby ensuring the machining accuracy of the workpiece.

[0003] In existing technologies, locking is basically achieved using the built-in function of the hydraulic turntable. However, the rotating body at the top of the hydraulic turntable has rotational inertia. Therefore, when processing the workpiece, the rotating body is affected by external forces and often produces slight rotation, which can lead to workpiece processing failure. Thus, an additional clamping device is needed to lock the rotating body. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic clamping device for a machine tool rotary table to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a hydraulic clamping device for a machine tool rotary table, comprising a base and a hydraulic rotary table mounted at the center of the top of the base. Four clamping assemblies are provided on the outer side of the hydraulic rotary table. Each clamping assembly is connected to the hydraulic rotary table via a sliding assembly. Each clamping assembly includes a housing and a first hydraulic cylinder horizontally mounted on the housing. The piston end of the first hydraulic cylinder penetrates the side wall of the housing and is connected to a lower pressure rod via a linkage assembly. A guide sleeve is fitted onto the upper half of the lower pressure rod, and the guide sleeve is fixed within a through hole at the top of the housing. The lower end of the lower pressure rod penetrates a through hole at the bottom of the housing and is connected to a pressure block.

[0007] Furthermore, the sliding assembly includes an inverted T-shaped plate connected to the bottom of the housing and a second hydraulic cylinder mounted on the side wall of the hydraulic turntable. The piston end of the second hydraulic cylinder is connected to a vertically arranged plate of the T-shaped plate. A sliding groove is provided on the horizontally arranged plate of the T-shaped plate. A slide rail is provided on the bottom surface of the mounting plate at the top of the hydraulic turntable. The T-shaped plate is slidably connected to the slide rail through the sliding groove.

[0008] Furthermore, the included angle between two adjacent clamping components is 90°.

[0009] Furthermore, the linkage assembly includes a first U-shaped frame and a second U-shaped frame, which are connected by a two-linkage rod. One open end of the first U-shaped frame is hinged to the piston end of the first hydraulic cylinder, and both sides of the sealed end of the second U-shaped frame are hinged to the outer shell. Insert rods are connected to both ends of the open side of the second U-shaped frame. A fixing sleeve is fitted on the body of the pressing rod, and two symmetrically arranged grooves are opened on the outer wall of the fixing sleeve. The other end of the insert rod is inserted into the groove.

[0010] Furthermore, an inspection window is provided on the top of the outer casing, and a sealing door is provided on the outside of the inspection window. Two retaining plates are provided on the outer wall of the outer casing. One end of the sealing door is inserted into the gap between the retaining plate and the outer casing, and the sealing door seals the inspection window. The end of the sealing door away from the retaining plate is rotatably connected to a locking plate on the top of the outer casing.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] This utility model uses a horizontally arranged hydraulic cylinder, which drives the lower pressure rod to descend through a linkage component, so that the pressure block presses against the object on the top of the hydraulic turntable, greatly improving the locking effect. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a front view of the hydraulic clamping device for the machine tool rotary table of this utility model;

[0015] Figure 2 This is a schematic diagram of the clamping component structure;

[0016] Figure 3 A schematic diagram of the installation of the linkage components;

[0017] Figure 4 Install the main view for the linked components;

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. Hydraulic turntable; 3. Outer shell; 4. First hydraulic cylinder; 5. Lower pressure rod; 6. Guide sleeve; 7. Pressure block; 8. T-shaped plate; 9. Second hydraulic cylinder; 10. Mounting plate; 11. Slide rail; 12. First U-shaped frame; 13. Second U-shaped frame; 14. Two connecting rods; 15. Insert rod; 16. Fixing sleeve; 17. Groove; 18. Closing door; 19. Clamping plate; 20. Locking plate. Detailed Implementation

[0019] like Figure 1-4As shown, a hydraulic clamping device for a machine tool rotary table includes a base 1 and a hydraulic rotary table 2 installed at the top center of the base 1. The hydraulic rotary table 2 has four clamping components on its outer side, and the included angle between two adjacent clamping components is 90°.

[0020] The clamping assembly is connected to the hydraulic turntable 2 via a sliding assembly. The clamping assembly includes a housing 3 and a first hydraulic cylinder 4 mounted horizontally on the housing 3. The piston end of the first hydraulic cylinder 4 passes through the side wall of the housing 3 and is connected to a lower pressure rod 5 via a linkage assembly. A guide sleeve 6 is fitted on the upper half of the lower pressure rod 5. The guide sleeve 6 is fixed in a through hole opened at the top of the housing 3. The lower end of the lower pressure rod 5 passes through a through hole opened at the bottom of the housing 3 and is connected to a pressure block 7.

[0021] The sliding assembly includes an inverted T-shaped plate 8 connected to the bottom of the housing 3 and a second hydraulic cylinder 9 mounted on the side wall of the hydraulic turntable 2. The piston end of the second hydraulic cylinder 9 is connected to a vertically arranged plate of the T-shaped plate 8. A sliding groove is formed on the horizontally arranged plate of the T-shaped plate 8. A slide rail 11 is provided on the bottom surface of the mounting plate 10 at the top of the hydraulic turntable 2. The T-shaped plate 8 is slidably connected to the slide rail 11 through the sliding groove. By controlling the distance between the pressing assembly and the hydraulic turntable 2 through the sliding assembly, the pressing position of the pressure block 7 can be adjusted.

[0022] The linkage assembly includes a first U-shaped frame 12 and a second U-shaped frame 13, which are connected by a two-linkage rod 14. One open end of the first U-shaped frame 12 is hinged to the piston end of the first hydraulic cylinder 4, and both sides of the sealed end of the second U-shaped frame 13 are hinged to the outer shell 3. Insert rods 15 are connected to both ends of the open side of the second U-shaped frame 13. A fixing sleeve 16 is fitted on the body of the pressing rod 5. Two symmetrically arranged grooves 17 are opened on the outer wall of the fixing sleeve 16, and the other end of the insert rod 15 is inserted into the groove 17.

[0023] The top of the outer casing 3 has an inspection window, and the outer side of the inspection window has a sealing door 18. Two retaining plates 19 are provided on the outer wall of the outer casing 3. One end of the sealing door 18 is inserted into the gap between the retaining plate 19 and the outer casing 3, and the sealing door 18 seals the inspection window. The end of the sealing door 18 away from the retaining plate 19 is rotatably connected to a locking plate 20 on the top of the outer casing 3. When the sealing door 18 is opened, the locking plate 20 is rotated to remove the sealing door 18 from between the outer casing 3 and the retaining plate 19, allowing a direct view of the structure of the linkage assembly for easy maintenance.

[0024] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. Hydraulic presser device for a machine tool rotary table, characterized in that: The utility model provides a hydraulic pressure presser, including base (1) and install on the top center position of base (1) hydraulic pressure rotary table (2), the outside of hydraulic pressure rotary table (2) is equipped with four compression components, the compression component is connected on hydraulic pressure rotary table (2) through sliding component, and the compression component includes shell (3) and installs the first hydraulic cylinder (4) of lateral arrangement on shell (3), the piston end of first hydraulic cylinder (4) is connected with the down bar (5) through linkage component after penetrating the lateral wall of shell (3), the upper half of down bar (5) is equipped with the guide sleeve (6) on the rod, the guide sleeve (6) is fixed in the through -hole of the top of shell (3), and the lower end of down bar (5) is connected with the pressure block (7) after penetrating the through -hole of the bottom of shell (3).

2. The machine tool rotary table hydraulic hold down apparatus of claim 1 wherein: The sliding component includes the T-shaped plate (8) of reverse arrangement connected on the bottom of shell (3) and the second hydraulic cylinder (9) installed on the lateral wall of hydraulic pressure rotary table (2), the piston end of second hydraulic cylinder (9) is connected on the vertical plate of T-shaped plate (8), the sliding slot is seted up on the horizontal plate of T-shaped plate (8), and the slide rail (11) is seted up on the bottom surface of the mounting plate (10) of the top of hydraulic pressure rotary table (2), and T-shaped plate (8) is slidably connected on slide rail (11) through sliding slot.

3. The machine tool rotary table hydraulic hold down apparatus of claim 1 wherein: The included angle between two adjacent compression components is 90 DEG.

4. The machine tool rotary table hydraulic hold down apparatus of claim 1 wherein: The linkage component includes first U-shaped frame (12) and second U-shaped frame (13), and the first U-shaped frame (12) and second U-shaped frame (13) are connected through two connecting rods (14), the open end of first U-shaped frame (12) is hinged on the piston end of first hydraulic cylinder (4), the both sides of the closed end of second U-shaped frame (13) are hinged on shell (3), the both ends of the open side of second U-shaped frame (13) are connected with inserting rod (15), the fixed sleeve (16) is sleeved on the rod of down bar (5), two recesses (17) are formed in the outer wall of fixed sleeve (16), and the other end of inserting rod (15) is inserted into recess (17).

5. The machine tool rotary table hydraulic hold down apparatus of claim 1 wherein: The top of shell (3) is provided with an access window, and a closure door (18) is arranged outside the access window.

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