Workpiece fixing mechanism of numerical control machining center

Abstract

The utility model belongs to the technical field of machining auxiliary mechanisms, and provides a workpiece fixing mechanism of a numerical control machining center, which comprises a base, supporting legs are fixedly mounted at four corners of the bottom of the base, a collecting box is movably mounted in the base through a slot, and a machining plate is fixedly mounted at the top end of the base. An L-shaped plate is fixedly installed on one side of the machining plate, a machining device is fixedly installed at the top end of the L-shaped plate, and the output end of the machining device faces the machining plate. The threaded block capable of moving back and forth is arranged in the machining plate and drives the containing plate to move synchronously, so that the containing plate can be driven to move to the side away from the machining device, a workpiece is placed in the containing plate, the containing plate is moved to the position below the machining device after the workpiece is placed, and long-distance placement and taking down of the workpiece are achieved; and the danger caused by mistakenly touching the device is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining auxiliary mechanisms, and in particular relates to a workpiece fixing mechanism for a numerical control machining center. Background Art

[0002] CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC system suitable for machining complex parts. The machining center is developed from CNC milling machine. The biggest difference from CNC milling machine is that the machining center has the ability to automatically exchange machining tools. By installing tools of different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changer in one clamping to achieve multiple machining functions. When machining the workpiece, the CNC machining center needs to place the workpiece on the machining table and fix it.

[0003] After searching, the patent with authorization publication number CN211414384U discloses a fixing mechanism for a CNC machining center, including a workbench and a clamping device, characterized in that: the clamping device includes a fixing module, a base and two positioning blocks, the base is connected to the workbench, the two positioning blocks are slidably connected to the base, both positioning blocks are provided with positioning notches, the positioning notches on the two positioning blocks cooperate to form a positioning space, the fixing module includes a fixing block that cooperates with the positioning space and a placing block connected to the fixing block, the placing block is provided with a connecting groove, the connecting groove is provided with an adhesive layer, and the fixing module is made of quartz stone.

[0004] The above patent has the following deficiencies: although the fixing mechanism can achieve the fixing effect, its structure lacks certain safety. When placing and removing the workpiece, it is necessary to manually put the hand close to the bottom of the processing device, which is dangerous. Once the device is accidentally started, it will cause harm to the workers. Utility Model Content

[0005] The purpose of the utility model is to provide a workpiece fixing mechanism for a numerical control machining center to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A workpiece fixing mechanism for a numerical control machining center, comprising:

[0008] A base, wherein the four corners of the bottom of the base are fixedly installed with supporting feet, a collecting box is movably installed inside the base through a slot, a processing plate is fixedly installed on the top of the base, an L-shaped plate is fixedly installed on one side of the processing plate, a processing device is fixedly installed on the top of the L-shaped plate, and the output end of the processing device faces the processing plate;

[0009] A fixing component is arranged on one side of the top of the processing plate, and the fixing component includes a threaded block movably installed inside the processing plate, a support plate is fixedly installed on the top of the threaded block, two clamping plates are movably installed on the top of the support plate, and a pressure plate is movably installed on one side of the two clamping plates.

[0010] Preferably, a threaded rod is movably installed inside the processing plate through a bearing, a threaded block is installed on the outside of the threaded rod through threaded engagement, the threaded block is slidingly fitted with the inner wall of the processing plate, a servo motor is installed on the side of the processing plate away from the L-shaped plate through a fixed seat, and the output end of the servo motor is connected to the shaft transmission of the threaded rod through a coupling.

[0011] Preferably, two limit grooves are opened inside the processing plate, and the two limit grooves are symmetrically arranged on both sides of the processing plate. Limit blocks are movably installed inside the two limit grooves. The limit blocks are slidably fitted with the inner walls of the limit grooves, and the limit blocks are fixedly connected to the threaded block on the side close to the threaded block.

[0012] Preferably, a support plate is fixedly installed on the top of the threaded block, a placement area is provided on the side of the support plate away from the threaded block, two support plates are fixedly installed on the side of the support plate away from the threaded block, and the two support plates are symmetrically arranged on both sides of the placement area.

[0013] Preferably, the two support plates are fixedly mounted with electric push rods on one side close to the placement area, the output ends of the electric push rods are fixedly mounted with clamping plates, the clamping plates are movably mounted with pressure plates on one side close to the placement area, and the pressure plates are fitted with one side of the clamping plates.

[0014] Preferably, an adjustment plate is fixedly mounted on one side of the clamping plate close to the pressure plate, a bolt is screwed inside the adjustment plate through a thread, and the bolt is movably connected to one side of the pressure plate through a bearing close to the pressure plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model provides a threaded block that can move forward and backward inside the processing plate, and the threaded block drives the placement plate to move synchronously. This not only drives the placement plate to move to the side away from the processing device, but also places the workpiece there. After placement, the placement plate is moved to the bottom of the processing device, thereby realizing the long-distance placement and removal of the workpiece and avoiding the danger caused by accidentally touching the device.

[0017] (2) The utility model arranges electric push rods on both sides of the top of the support plate. When fixing the workpiece, the electric push rods are used to push the clamping plate close to the workpiece to clamp the workpiece on both sides of the workpiece. At the same time, after the workpiece is clamped, the bolts can be rotated to drive the pressure plate to move downward until the pressure plate presses the workpiece tightly, thereby achieving fixation in multiple directions and achieving a better fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the support plate installation structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the clamping plate installation structure of the utility model.

[0021] In the figure: 1. base; 11. support foot; 12. collection box; 13. processing plate; 14. L-shaped plate; 15. processing device; 2. fixing assembly; 21. threaded rod; 22. threaded block; 23. servo motor; 24. limit groove; 25. limit block; 26. support plate; 27. placement area; 28. support plate; 29. ​​electric push rod; 210. clamping plate; 211. pressure plate; 212. adjustment plate; 213. bolts. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] See also Figure 1 - Figure 2 As shown, a workpiece fixing mechanism of a CNC machining center comprises:

[0025] Base 1, legs 11 are fixedly installed at the four corners of the bottom of the base 1, a collecting box 12 is movably installed inside the base 1 through a slot, a processing plate 13 is fixedly installed at the top of the base 1, an L-shaped plate 14 is fixedly installed on one side of the processing plate 13, a processing device 15 is fixedly installed at the top of the L-shaped plate 14, and the output end of the processing device 15 faces the processing plate 13;

[0026] The fixing component 2 is arranged on one side of the top of the processing plate 13. The fixing component 2 includes a threaded block 22 movably installed inside the processing plate 13. A support plate 26 is fixedly installed on the top of the threaded block 22. Two clamping plates 210 are movably installed on the top of the support plate 26. A pressure plate 211 is movably installed on one side of the two clamping plates 210.

[0027] Specifically, a threaded rod 21 is movably installed inside the processing plate 13 through a bearing, and a threaded block 22 is installed on the outer side of the threaded rod 21 through threaded engagement. The threaded block 22 slides and fits with the inner wall of the processing plate 13. A servo motor 23 is installed on the side of the processing plate 13 away from the L-shaped plate 14 through a fixed seat. The output end of the servo motor 23 is connected to the shaft transmission of the threaded rod 21 through a coupling. Two limit grooves 24 are opened inside the processing plate 13, and the two limit grooves 24 are symmetrically arranged on both sides of the processing plate 13. Limit blocks 25 are movably installed inside the two limit grooves 24, and the limit blocks 25 slide and fit with the inner wall of the limit groove 24. The limit block 25 is fixedly connected to the threaded block 22 on the side close to the threaded block 22.

[0028] As can be seen from the above, a collecting box 12 is arranged inside the base 1, and the collecting box 12 is interconnected with the inside of the processing plate 13, so that the debris dropped during the processing of the workpiece can be collected for easy processing. The processing device 15 is used to process the workpiece, such as drilling, grinding and other operations. The threaded rod 21 can drive the threaded block 22 to move inside the processing plate 13, and the servo motor 23 provides power output for the rotation of the threaded rod 21. The threaded block 22 will synchronously drive the support plate 26 to move, so as to realize long-distance loading and unloading. The limit groove 24 and the limit block 25 are mainly used to limit the threaded block 22, and also provide a certain supporting force.

[0029] Embodiment 2:

[0030] See also Figure 2 - Figure 3 As shown, a support plate 26 is fixedly installed on the top of the threaded block 22, a placement area 27 is provided on the side of the support plate 26 away from the threaded block 22, and two support plates 28 are fixedly installed on the side of the support plate 26 away from the threaded block 22. The two support plates 28 are symmetrically arranged on both sides of the placement area 27.

[0031] Specifically, the two support plates 28 are fixedly installed with electric push rods 29 on one side near the placement area 27, and a clamping plate 210 is fixedly installed on the output end of the electric push rod 29. A pressure plate 211 is movably installed on the clamping plate 210 on one side near the placement area 27. The pressure plate 211 is fitted with one side of the clamping plate 210, and an adjusting plate 212 is fixedly installed on the clamping plate 210 on one side near the pressure plate 211. A bolt 213 is screwed inside the adjusting plate 212 through a thread, and the bolt 213 is movably connected to one side of the pressure plate 211 through a bearing on the side near the pressure plate 211.

[0032] As can be seen from the above, the placement area 27 is used to place the workpiece, and the support plate 28 is used to install the electric push rod 29. The electric push rod 29 pushes the clamping plate 210 on both sides of the placement area 27 to clamp and fix the workpiece. The pressure plate 211 is affected by the bolt 213 and moves up and down on one side of the clamping plate 210. Since the pressure plate 211 is in contact with one side of the clamping plate 210, it is restricted by the side of the clamping plate 210 and can only move in a straight line. The pressure plate 211 can be against the top of the workpiece, thus achieving multi-directional fixation.

[0033] 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 workpiece fixing mechanism for a CNC machining center, characterized in that: include: A base (1), wherein four corners of the bottom of the base (1) are fixedly mounted with supporting feet (11), a collecting box (12) is movably mounted inside the base (1) via a slot, a processing plate (13) is fixedly mounted on the top of the base (1), an L-shaped plate (14) is fixedly mounted on one side of the processing plate (13), a processing device (15) is fixedly mounted on the top of the L-shaped plate (14), and an output end of the processing device (15) faces the processing plate (13); A fixing component (2), the fixing component (2) being arranged on one side of the top end of the processing plate (13), the fixing component (2) comprising a threaded block (22) movably mounted inside the processing plate (13), a support plate (26) being fixedly mounted on the top end of the threaded block (22), two clamping plates (210) being movably mounted on the top end of the support plate (26), and a pressure plate (211) being movably mounted on one side of each of the two clamping plates (210).

2. A workpiece fixing mechanism for a CNC machining center according to claim 1, characterized in that: A threaded rod (21) is movably mounted inside the processing plate (13) via a bearing, a threaded block (22) is mounted on the outside of the threaded rod (21) via a threaded engagement, the threaded block (22) is slidably fitted with the inner wall of the processing plate (13), a servo motor (23) is mounted on the side of the processing plate (13) away from the L-shaped plate (14) via a fixed seat, and an output end of the servo motor (23) is connected to the shaft of the threaded rod (21) via a coupling.

3. A workpiece fixing mechanism for a CNC machining center according to claim 2, characterized in that: Two limiting grooves (24) are provided inside the processing plate (13), and the two limiting grooves (24) are symmetrically arranged on both sides of the processing plate (13). Limiting blocks (25) are movably installed inside the two limiting grooves (24), and the limiting blocks (25) are slidably fitted with the inner walls of the limiting grooves (24). The limiting blocks (25) are fixedly connected to the threaded block (22) on the side close to the threaded block (22).

4. The workpiece fixing mechanism of a CNC machining center according to claim 1, characterized in that: A support plate (26) is fixedly mounted on the top of the threaded block (22); a placement area (27) is provided on the side of the support plate (26) away from the threaded block (22); two support plates (28) are fixedly mounted on the side of the support plate (26) away from the threaded block (22); the two support plates (28) are symmetrically arranged on both sides of the placement area (27).

5. A workpiece fixing mechanism for a CNC machining center according to claim 4, characterized in that: An electric push rod (29) is fixedly mounted on one side of the two support plates (28) close to the placement area (27); a clamping plate (210) is fixedly mounted on the output end of the electric push rod (29); a pressing plate (211) is movably mounted on one side of the clamping plate (210) close to the placement area (27); and the pressing plate (211) is in contact with one side of the clamping plate (210).

6. A workpiece fixing mechanism for a CNC machining center according to claim 5, characterized in that: An adjustment plate (212) is fixedly mounted on one side of the clamping plate (210) close to the pressure plate (211); a bolt (213) is screwed inside the adjustment plate (212) through a thread; and the bolt (213) is movably connected to one side of the pressure plate (211) through a bearing on one side of the pressure plate (211).

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