Hydraulic micro-motion large-force clamping device

Abstract

The utility model relates to a hydraulic micro-motion large-force clamping device which comprises a micro-motion screw, a reset compression spring, a small piston, hydraulic oil, a limiting cone, a main body, a large piston, a wave-shaped reset spring, a positioning sleeve, a movable pushing block, a connecting body, a bearing block, a screw and a workpiece, and is characterized in that the large piston penetrates through an inner hole of the positioning sleeve; the positioning sleeve is connected with the main body through threads, a workpiece is placed on the connecting body, the micro screw is rotated in the forward direction, the small piston moves forwards, hydraulic oil generates huge pressure, the large piston generates huge thrust, the workpiece is clamped between the movable pushing block and the bearing block, the micro screw is rotated in the reverse direction, the small piston returns to the initial position, and meanwhile the workpiece is clamped between the movable pushing block and the bearing block. And the large piston returns to the initial position. The hydraulic micro-motion large-force clamping device is reasonable in design, compact in structure, convenient to operate and wide in application range. The hydraulic micro-motion large-force clamping device is reasonable in design, compact in structure, convenient to operate and wide in application range.

Description

Technical Field

[0001] The utility model relates to a hydraulic micro-motion high-power clamping device. Background Art

[0002] The existing machine tool clamping device generally adopts a bench vise or various flat-nose pliers. These bench vises or various flat-nose pliers are basically clamped by spiral clamping. A large torque is required when clamping, and the workpiece must be knocked several times during the clamping process to compensate for the workpiece positioning misalignment caused by the clamping torque. It is still OK to use it for rough machining or parts with a certain machining accuracy. However, it is used in high-precision parts processing. The clamping must meet the requirements. Multiple inspections and corrections must be performed during the clamping process, and even the mechanical processing equipment must be corrected. The large torque of long-term clamping will cause fatigue damage to the machine tool, which is troublesome. If the mechanical stiffness is not, the existing bench vises or various flat-nose pliers are limited in clamping workpieces and need to be improved. Utility Model Content

[0003] The purpose of the utility model is to design a hydraulic micro-motion high-power clamping device.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a hydraulic micro-motion high-power clamping device, comprising: a micro-motion screw 1, a reset compression spring 2, a small piston 3, hydraulic oil 4, a limiting cone 5, a main body 6, a large piston 7, a wave reset spring 8, a positioning sleeve 9, a movable pushing block 10, a connecting body 11, a bearing block 12, a screw 13, a screw 2 14 and a workpiece 15, which is characterized in that: the external thread of the limiting cone 5 is connected with the main body 6, the wave reset spring 8 is sleeved on the guide rod circle 702 of the large piston 7, clamped between the positioning sleeve 9 and the large piston 7, the large piston 7 is worn on the inner hole of the positioning sleeve 9, the matching hole of the plunger circle 701 and the positioning sleeve 9 is a precise sliding match, the guide rod circle 702 and the hole of the positioning sleeve 9 are a precise sliding match, the positioning sleeve 9 is connected with the main body 6 by a thread, a sealing member is arranged between the positioning sleeve 9 and the main body 6, and the hydraulic oil will not leak, and the container composed of the limiting cone 5, the main body 6 and the large piston 7 is filled with the hydraulic oil 4.

[0005] The return compression spring 2 is sleeved on the small piston 3, with one end axially limited on the step of the small piston 3 and the other end limited on the main body 6. The small piston 3 is inserted into the matching hole of the main body 6, and the matching holes of the small piston 3 and the main body 6 are precisely sliding fits.

[0006] The external thread of the fine-motion screw 1 is connected with the matching thread on the main body 6. The boss on the fine-motion screw 1 is pressed against the small piston 3. When the fine-motion screw 1 is screwed onto the fine-motion screw 1, the small piston 3 can push the hydraulic oil 4 forward or reset the small piston 3 backward to its initial position under the action of the reset compression spring 2.

[0007] The main body 6 is connected to one end of the connecting body 11 by a plurality of screws 13 , and the bearing block 12 is connected to the other end of the connecting body 11 by a plurality of screws 14 .

[0008] The movable pushing block 10 is placed on the connecting body 11. The movable pushing block 10 has a V-shaped groove. The supporting block 12 also has a V-shaped groove. The workpiece 15 is placed between the movable pushing block 10 and the supporting block 12. The movable pushing block 10 moves forward and stops due to the resistance of the supporting block 12 and the workpiece 15. At this time, the fine-motion screw 1 continues to rotate forward, and the small piston 3 continues to move forward, so that the hydraulic oil 4 generates a huge pressure. The hydraulic oil transfers the pressure to the large piston 7, so that the large piston 7 generates a huge thrust, which pushes the movable pushing block 10 to clamp the workpiece 15 between the movable pushing block 10 and the supporting block 12.

[0009] The beneficial effects of the utility model are that the workpiece can be clamped easily and conveniently without misalignment, and the machine tool will not be fatigued and damaged by external forces for a long time. It is particularly suitable for processing and clamping equipment for fine-machined parts, and has small size, light weight, low cost, and easy installation, debugging and maintenance.

[0010] The utility model is described in detail below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 : A main structural diagram of a hydraulic micro-motion high-power clamping device.

[0012] Attached Figure 2 : A top view of the structure of a hydraulic micro-motion high-power clamping device.

[0013] Attached Figure 3 : Right view of a hydraulic micro-motion high-power clamping device.

[0014] Attached Figure 4 : Left view of a hydraulic micro-motion high-power clamping device.

[0015] Attached Figure 5 : Schematic diagram of a hydraulic micro-motion high-power clamping device clamping a workpiece.

[0016] Attached Figure 6 : Partial diagram of the small piston assembly of a hydraulic micro-motion high-force clamping device.

[0017] Attached Figure 7 :Structural diagram of a large piston of a hydraulic micro-motion high-power clamping device

[0018] In the attached drawings: 1—fine-motion screw, 2—reset compression spring, 3—small piston, 4—hydraulic oil, 5—limiting cone, 6—main body, 7—large piston, 8—wave-shaped return spring, 9—positioning sleeve, 10—movable push block, 11—connecting body, 12—bearing block, 13—screw one, 14—screw two, 15—workpiece, 701—plunger circle, 702—guide rod circle. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. It is obvious that the described embodiments are only a part of the utility model, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Instructions Figure 1 and the instructions Figure 2 As shown: the external thread of the limiting cone 5 is connected to the main body 6, the wave return spring 8 is sleeved on the guide rod circle 702 of the large piston 7, and is clamped between the positioning sleeve 9 and the large piston 7. The large piston 7 is passed through the inner hole of the positioning sleeve 9. The matching holes of the plunger circle 701 and the positioning sleeve 9 are precisely sliding fits, and the guide rod circle 702 and the hole of the positioning sleeve 9 are precisely sliding fits. The positioning sleeve 9 is connected to the main body 6 by a thread, and a seal is provided between the positioning sleeve 9 and the main body 6 to prevent leakage of hydraulic oil. The container composed of the limiting cone 5, the main body 6 and the large piston 7 is filled with hydraulic oil 4.

[0021] Instructions Figure 6 and the instructions Figure 2 As shown: the return compression spring 2 is sleeved on the small piston 3, one end of which is limited on the step of the small piston 3 along the axial direction, and the other end is limited on the main body 6, and the small piston 3 is inserted into the matching hole of the main body 6, and the matching holes of the small piston 3 and the main body 6 are precise sliding fits.

[0022] Instructions Figure 6 and the instructions Figure 2 As shown: the external thread of the fine-motion screw 1 is connected with the matching thread on the main body 6, the convex top of the fine-motion screw 1 is on the small piston 3, and the fine-motion screw 1 is screwed onto the small piston 3. Under the action of the reset compression spring 2, the small piston 3 can push the hydraulic oil 4 forward or reset the small piston 3 backward to the initial position.

[0023] Instructions Figure 1 , attached in the instruction manual Figure 3 and the instructions Figure 4As shown: the main body 6 is connected to one end of the connecting body 11 by a plurality of screws 13, and the bearing block 12 is connected to the other end of the connecting body 11 by a plurality of screws 14.

[0024] Instructions Figure 1 and the instructions Figure 2 As shown: the movable push block 10 is placed on the connecting body 11, the side of the movable push block 10 with the V-shaped groove is opposite to the side of the bearing block 12 with the V-shaped groove, and the movable push block 10 is fitted together with the end surface of the guide rod circle 702 of the large piston 7.

[0025] Instructions Figure 5 As shown: the workpiece 15 is placed on the connecting body and is located between the movable pushing block 10 and the carrying block 12.

[0026] The fine-motion screw 1 is rotated forward to push the small piston 3 forward, and the large piston 7 and the movable pushing block 10 are pushed forward slightly by the hydraulic oil 4. When the workpiece 15 is placed between the movable pushing block 10 and the bearing block 12, the movable pushing block 10 stops moving forward due to the resistance of the bearing block 12 and the workpiece 15. At this time, the fine-motion screw 1 continues to be rotated forward to continue to push the small piston 3 forward, so that the hydraulic oil 4 generates a huge pressure. The hydraulic oil transfers the pressure to the large piston 7, causing the large piston 7 to generate a huge thrust, pushing the movable pushing block 10 to clamp the workpiece 15 between the movable pushing block 10 and the bearing block 12.

[0027] The working process of a hydraulic micro-motion high-power clamping device is as follows: a workpiece 15 is placed on a connector and is located between a movable push block 10 and a bearing block 12. The micro-motion screw 1 is rotated forward to push the small piston 3 forward and compress the reset compression spring 2. The large piston 7 and the movable push block 10 are pushed forward to micro-move through the hydraulic oil 4, and the corrugated reset spring 8 is also compressed. At this time, the micro-motion screw 1 is continued to be rotated forward to continue to push the small piston 3 forward, so that the hydraulic oil 4 generates a huge pressure. The hydraulic oil transmits the pressure to the large piston 7, so that the large piston 7 generates a huge thrust, and pushes the movable push block 10 to clamp the workpiece 15 between the movable push block 10 and the bearing block 12. The micro-motion screw 1 is rotated in the opposite direction, and the energy stored in the reset compression spring 2 when it is compressed is released, so that the small piston 3 returns to the starting position. At the same time, the large piston 7 returns to the starting position under the restoring force of the corrugated reset spring 8 and sticks to the limiting cone 5. A hydraulic micro-motion high-power clamping device has a reasonable design, a compact structure, convenient operation, and a wide range of applications.

Claims

1. A hydraulic micro-motion high-power clamping device, comprising: A fine-motion screw (1), a return compression spring (2), a small piston (3), hydraulic oil (4), a stop cone (5), a main body (6), a large piston (7), a wave return spring (8), a positioning sleeve (9), a movable push block (10), a connecting body (11), a bearing block (12), a screw 1 (13), a screw 2 (14) and a workpiece (15), wherein the outer thread of the stop cone (5) is connected to the main body (6), the wave return spring (8) is sleeved on the large piston (7 ) is clamped between the positioning sleeve (9) and the large piston (7), the large piston (7) is inserted into the inner hole of the positioning sleeve (9), the matching holes of the plunger circle (701) and the positioning sleeve (9) are precisely slidably matched, the guide rod circle (702) and the hole of the positioning sleeve (9) are precisely slidably matched, the positioning sleeve (9) is connected to the main body (6) by a thread, a seal is provided between the positioning sleeve (9) and the main body (6), and hydraulic oil will not leak. The container composed of the main body (6) and the large piston (7) is filled with hydraulic oil (4). The return compression spring (2) is sleeved on the small piston (3). One end of the return compression spring (2) is limited on the step of the small piston (3) along the axial direction, and the other end is limited on the main body (6). The small piston (3) is inserted into a hole matched with the main body (6). The holes matched with the small piston (3) and the main body (6) are precisely slidably matched. The external thread of the fine-motion screw (1) is connected with the matching thread on the main body (6). The fine-motion The boss on the screw (1) is placed on the small piston (3), the main body (6) is connected to one end of the connecting body (11) by a plurality of screws (13), the bearing block (12) is connected to the other end of the connecting body (11) by a plurality of screws (14), the movable pushing block (10) is placed on the connecting body (11), the movable pushing block (10) has a V-shaped groove, the bearing block (12) also has a V-shaped groove, and the workpiece (15) is placed between the movable pushing block (10) and the bearing block (12).

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