Hydraulic clamp of vertical machining center

Abstract

The utility model relates to the technical field of vertical machining centers, in particular to a vertical machining center hydraulic clamp which comprises a base. The base is connected with a clamping mechanism, the clamping mechanism comprises two moving plates, clamping blocks and buffer springs, the moving plates are arranged at the top end of the base, the two moving plates are symmetrically arranged, and the clamping blocks are arranged on the inner sides of the moving plates; the clamping block comprises a supporting assembly arranged in the middle of the clamping block and limiting assemblies arranged at the two ends of the clamping block, the limiting assemblies are rotationally connected with the supporting assembly, and the buffer spring is arranged between the clamping block and the moving plate. The height of the clamping block can be conveniently adjusted through the arranged lifting adjusting type structure, so that the clamping block can meet the clamping and fixing requirements of workpieces with different heights, the arranged buffering structure can buffer the clamping of the workpiece by the clamping block, and the situation that the clamping block collides with the workpiece due to too fast clamping, and the workpiece is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical machining centers, in particular to a hydraulic clamp for a vertical machining center. Background Art

[0002] A vertical machining center refers to a machining center in which the spindle axis is arranged perpendicular to the worktable. In a vertical machining center, the workpiece fixture is an important factor affecting machining accuracy and efficiency. Most existing fixtures are purely mechanical clamps for the workpiece, and the preload force is insufficient, resulting in the vertical machining center's feed amount not being too large, and the workpiece is prone to relative movement with the fixture after being subjected to force, resulting in a decrease in the machining accuracy of the vertical machining center. A hydraulic clamp is a clamp that uses hydraulic components instead of mechanical parts to achieve automatic positioning, support and clamping of the workpiece through hydraulic control. The clamping structure in the prior art is mostly a fixed structure, which cannot be adjusted during use, and cannot adapt to the clamping and fixing requirements of workpieces of different heights during the clamping and fixing process. In view of this, we propose a hydraulic clamp for a vertical machining center. Utility Model Content

[0003] The utility model aims to provide a hydraulic clamp for a vertical machining center, which solves the problem that the clamping and fixing requirements of workpieces of different heights cannot be met during the clamping and fixing process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic clamp for a vertical machining center comprises a base;

[0006] The base is connected with a clamping mechanism, which comprises a moving plate, a clamping block and a buffer spring, wherein the moving plate is arranged at the top of the base, two moving plates are provided, and the two moving plates are arranged symmetrically with each other, the clamping block is arranged at the inner side of the moving plate, the clamping block comprises a supporting assembly arranged in the middle of the clamping block and limiting assemblies arranged at both ends of the clamping block, the limiting assembly is rotatably connected to the supporting assembly, and the buffer spring is arranged between the clamping block and the moving plate;

[0007] The clamping mechanism also includes a double-axis hydraulic cylinder and a sleeve rod. The double-axis hydraulic cylinder is fixedly arranged at the bottom end of the base. The output shafts of the double-axis hydraulic cylinders are all in an "L"-shaped structure. The sleeve rod is sleeved on the end of the double-axis hydraulic rod output shaft. The sleeve rod is an "L"-shaped structure. The sleeve rod is slidably connected to the output shaft of the double-axis hydraulic rod, and the end of the sleeve rod is fixedly arranged on the outside of the movable plate.

[0008] Preferably, the clamping mechanism further comprises a movable groove, the movable groove is provided at both ends of the base, the movable groove corresponds to the position of the dual-axis hydraulic cylinder, and the movable groove and the movable plate are arranged perpendicular to each other.

[0009] Preferably, the clamping mechanism also includes a moving rod and a limiting groove, the moving rod is connected to the bottom end of the clamping block, the moving rod is arranged through the base, the length of the moving rod is the same as the height of the sleeve rod, the limiting groove is opened in the middle of the base, and the moving rod is arranged inside the limiting groove.

[0010] Preferably, the clamping mechanism also includes a rack and a gear column, the rack is connected to the outside of the sleeve rod and the outside of the moving rod, the gear column is arranged through the base, the side of the gear column is arranged on the side of the moving groove and the side of the limiting groove, the gear column and the rack are meshed with each other, and a driving mechanism is provided at the end of the gear column.

[0011] Preferably, the clamping mechanism further comprises a damper and a rotating shaft, the damper is arranged at both ends of the inner side of the movable plate, the rotating shaft is arranged at both ends of the damper, and the ends of the rotating shaft are respectively connected to both ends of the clamping block and both ends of the movable plate.

[0012] Preferably, the driving mechanism includes a driving knob, a block and a slot, the driving knob is arranged at the end of the gear column, the block is arranged on the inner side of the driving knob, the slot is opened on the side of the base, and the block and slot structures correspond to each other.

[0013] Preferably, the driving mechanism also includes a driving rod and a return spring, the driving rod is connected to the inner side of the driving gear, the driving rod passes through the gear column and is arranged on the inner side of the gear column, the driving rod is a prismatic structure, the driving rod is slidingly connected to the gear column, and the return spring is connected to the end of the driving rod.

[0014] By means of the above technical solution, the utility model provides a hydraulic clamp for a vertical machining center, which has at least the following beneficial effects:

[0015] (1) The utility model can conveniently adjust the height of the clamping block by setting a lifting and lowering adjustment structure, so that the clamping block can adapt to the clamping and fixing requirements of workpieces of different heights.

[0016] (2) The buffer structure provided in the utility model can buffer the clamping of the workpiece by the clamping block, thereby preventing the clamping block from colliding with the workpiece due to excessive clamping, thereby preventing damage to the workpiece.

[0017] (3) The clamping block of the utility model with an adaptive structure can adapt to the clamping of different workpieces. The clamping block can fit the workpiece through its own deformation, thereby improving the stability of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the driving mechanism structure of the utility model;

[0022] In the figure: 1. base; 2. clamping mechanism; 201. moving plate; 202. clamping block; 2021. supporting assembly; 2022. limiting assembly; 203. buffer spring; 204. double-axis hydraulic cylinder; 205. sleeve rod; 206. moving groove; 207. moving rod; 208. limiting groove; 209. rack; 210. gear column; 211. damper; 212. rotating shaft; 3. driving mechanism; 301. driving knob; 302. clamping block; 303. clamping groove; 304. driving rod; 305. reset spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 As shown, a technical solution provided by the utility model:

[0025] Including a base 1;

[0026] A clamping mechanism 2 is connected to the base 1, and the clamping mechanism 2 includes a moving plate 201, a clamping block 202 and a buffer spring 203. The moving plate 201 is arranged at the top of the base 1. There are two moving plates 201, and the two moving plates 201 are arranged symmetrically with each other. The clamping block 202 is arranged on the inner side of the moving plate 201. The clamping block 202 includes a supporting assembly 2021 arranged in the middle of the clamping block 202 and a limiting assembly 2022 arranged at both ends of the clamping block 202. The limiting assembly 2022 is rotatably connected to the supporting assembly 2021, and the buffer spring 203 is arranged between the clamping block 202 and the moving plate 201.

[0027] Example 1

[0028] A hydraulic fixture for a vertical machining center, such as Figure 1-Figure 2As shown, the clamping mechanism 2 also includes a double-axis hydraulic cylinder 204 and a sleeve rod 205. The double-axis hydraulic cylinder 204 is fixedly arranged at the bottom end of the base 1. The output shafts of the double-axis hydraulic cylinder 204 are all in an "L"-shaped structure. The sleeve rod 205 is sleeved on the end of the output shaft of the double-axis hydraulic rod. The sleeve rod 205 is an "L"-shaped structure. The sleeve rod 205 is slidably connected with the output shaft of the double-axis hydraulic rod. The end of the sleeve rod 205 is fixedly arranged on the outside of the movable plate 201. The clamping mechanism 2 also includes a movable groove 206. The movable groove 206 is opened at both ends of the base 1. The position of the movable groove 206 and the double-axis hydraulic cylinder 204 corresponds to each other. The movable groove 206 and the movable plate 201 are arranged perpendicular to each other. The clamping mechanism 2 also includes a movable rod 207 and a limiting groove 208. The movable rod 207 is connected to the bottom end of the clamping block 202. The movable rod 207 passes through the base 1 and is set The length of the moving rod 207 is the same as the height of the sleeve rod 205, the limiting groove 208 is opened in the middle of the base 1, the moving rod 207 is arranged inside the limiting groove 208, the clamping mechanism 2 also includes a rack 209 and a gear column 210, the rack 209 is connected to the outside of the sleeve rod 205 and the outside of the moving rod 207, the gear column 210 is arranged through the base 1, the side of the gear column 210 is arranged on the side of the moving groove 206 and the side of the limiting groove 208, the gear column 210 and the rack 209 are meshed with each other, and the end of the gear column 210 is provided with a driving mechanism 3, the clamping mechanism 2 also includes a damper 211 and a rotating shaft 212, the damper 211 is arranged at the two ends of the inner side of the moving plate 201, the rotating shaft 212 is arranged at the two ends of the damper 211, and the ends of the rotating shaft 212 are respectively connected to the two ends of the clamping block 202 and the two ends of the moving plate 201.

[0029] In this embodiment, the dual-axis hydraulic cylinder 204 is arranged at the bottom end of the base 1, and is connected to the sleeve rod 205 through the output shafts at both ends. The sleeve rod 205 drives the movable plate 201 and the clamping block 202 to clamp and fix the workpiece. At the same time, the sleeve rod 205 can be raised and lowered under the drive of the side gear column 210, so as to adjust the height of the clamping block 202. The teeth between the gear column 210 and the rack 209 are all arranged horizontally, and the lateral movement of the sleeve rod 205 is not affected when the rack 209 and the sleeve rod 205 are raised and lowered. At the same time, the gear column 210 is arranged through the base 1, and is respectively engaged with the movable rod 207 in the limit groove 208 and the sleeve rod 205 in the movable groove 206, so as to realize the synchronous engagement of the movable rod 207 and the sleeve rod 205 and maintain stability during the clamping process.

[0030] Example 2

[0031] like Figure 3As shown, the driving mechanism 3 includes a driving knob 301, a block 302 and a slot 303. The driving knob 301 is arranged at the end of the gear column 210, the block 302 is arranged on the inner side of the driving knob 301, and the slot 303 is opened on the side of the base 1. The block 302 and the slot 303 structures correspond to each other. The driving mechanism 3 also includes a driving rod 304 and a reset spring 305. The driving rod 304 is connected to the inner side of the driving gear, and the driving rod 304 passes through the gear column 210 and is arranged on the inner side of the gear column 210. The driving rod 304 is a prismatic structure, and the driving rod 304 is slidably connected to the gear column 210. The reset spring 305 is connected to the end of the driving rod 304.

[0032] In this embodiment, the driving mechanism 3 can drive the gear column 210 to rotate. After completing the driving, the driving mechanism 3 can be stored under the elastic action of the reset spring 305, and the positioning of the block 302 by the card slot 303 can keep the gear column 210 and the clamping structure fixed after adjustment.

[0033] When the utility model is used, a hydraulic clamp for a vertical machining center is placed on the surface of a base 1, and a driving knob 301 is moved in the direction of a driving rod 304. When the driving knob 301 is moved, a clamping block 302 is moved out from a clamping slot 303, thereby losing the restriction on the driving knob 301. At the same time, the driving rod 304 is a prismatic structure. After the driving rod 304 is moved in the direction, the driving knob 301 is used to rotate the driving rod 304 to rotate the gear column 210. During the rotation process, the gear column 210 can drive the moving rod 207 and the sleeve rod 205 through the rack 209, so that the clamping block 202 and the moving plate 201 maintain synchronous lifting and lowering operations. The lifting and lowering of the clamping block 202 can make the clamping block 202 To adapt to the clamping and fixing operations of workpieces of different heights, after completing the adjustment operation, release the adjusting knob, and the adjusting knob moves toward the driving rod 304 under the elastic action of the reset spring 305, and the clamping block 302 moves into the clamping slot 303 and limits the rotation of the driving knob 301. Then the dual-axis hydraulic cylinder 204 is started and the output shafts at both ends move inward, and the sleeve rod 205 moves inward synchronously with the output shaft and drives the moving plate 201 and the clamping block 202 to move synchronously. After the clamping block 202 moves to the side of the workpiece, the buffer spring 203 on the inside of the clamping block 202 buffers the clamping force during the clamping process, and the limit assemblies 2022 at both ends of the clamping block 202 can be rotated, so that the clamping block 202 can adapt to the clamping of different workpieces.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic clamp for a vertical machining center, comprising a base (1), characterized in that: The base (1) is connected to a clamping mechanism (2), the clamping mechanism (2) comprising a movable plate (201), a clamping block (202) and a buffer spring (203); the movable plate (201) is arranged at the top of the base (1); two movable plates (201) are provided, and the two movable plates (201) are arranged symmetrically with each other; the clamping block (202) is arranged on the inner side of the movable plate (201); the clamping block (202) comprises a supporting component (2021) arranged in the middle of the clamping block (202) and a limiting component (2022) arranged at both ends of the clamping block (202); the limiting component (2022) is rotatably connected to the supporting component (2021); and the buffer spring (203) is arranged between the clamping block (202) and the movable plate (201); The clamping mechanism (2) further comprises a double-axis hydraulic cylinder (204) and a sleeve rod (205); the double-axis hydraulic cylinder (204) is fixedly arranged at the bottom end of the base (1); the output shafts of the double-axis hydraulic cylinder (204) are all in an "L"-shaped structure; the sleeve rod (205) is sleeved on the end of the output shaft of the double-axis hydraulic rod; the sleeve rod (205) is in an "L"-shaped structure; the sleeve rod (205) is slidably connected to the output shaft of the double-axis hydraulic rod; and the end of the sleeve rod (205) is fixedly arranged on the outside of the movable plate (201).

2. A hydraulic clamp for a vertical machining center according to claim 1, characterized in that: The clamping mechanism (2) further comprises a movable groove (206), wherein the movable groove (206) is provided at both ends of the base (1), the movable groove (206) and the double-axis hydraulic cylinder (204) correspond to each other in position, and the movable groove (206) and the movable plate (201) are arranged perpendicular to each other.

3. A hydraulic clamp for a vertical machining center according to claim 1, characterized in that: The clamping mechanism (2) further comprises a moving rod (207) and a limiting groove (208); the moving rod (207) is connected to the bottom end of the clamping block (202); the moving rod (207) is arranged to pass through the base (1); the length of the moving rod (207) is the same as the height of the sleeve rod (205); the limiting groove (208) is opened in the middle of the base (1); and the moving rod (207) is arranged inside the limiting groove (208).

4. A hydraulic clamp for a vertical machining center according to claim 1, characterized in that: The clamping mechanism (2) further comprises a rack (209) and a gear column (210), wherein the rack (209) is connected to the outside of the sleeve rod (205) and the outside of the moving rod (207), the gear column (210) is arranged through the base (1), the side of the gear column (210) is arranged on the side of the moving groove (206) and the side of the limiting groove (208), the gear column (210) and the rack (209) are meshed with each other, and a driving mechanism (3) is provided at the end of the gear column (210).

5. The hydraulic clamp for a vertical machining center according to claim 1, characterized in that: The clamping mechanism (2) further comprises a damper (211) and a rotating shaft (212); the damper (211) is arranged at two ends of the inner side of the movable plate (201); the rotating shaft (212) is arranged at two ends of the damper (211); and the ends of the rotating shaft (212) are respectively connected to two ends of the clamping block (202) and two ends of the movable plate (201).

6. A hydraulic clamp for a vertical machining center according to claim 4, characterized in that: The driving mechanism (3) comprises a driving knob (301), a clamping block (302) and a clamping slot (303); the driving knob (301) is arranged at the end of the gear column (210); the clamping block (302) is arranged on the inner side of the driving knob (301); the clamping slot (303) is opened on the side of the base (1); and the clamping block (302) and the clamping slot (303) structures correspond to each other.

7. A hydraulic clamp for a vertical machining center according to claim 6, characterized in that: The driving mechanism (3) further comprises a driving rod (304) and a return spring (305); the driving rod (304) is connected to the inner side of the driving gear; the driving rod (304) passes through the gear column (210) and is arranged on the inner side of the gear column (210); the driving rod (304) is a prismatic structure; the driving rod (304) is slidably connected to the gear column (210); and the return spring (305) is connected to the end of the driving rod (304).

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