Workpiece fixing device for numerical control machine tool

Abstract

The utility model provides a workpiece fixing device for a numerical control machine tool, which relates to the field of workpiece fixing of the numerical control machine tool and comprises a machine tool body, a fixing unit is arranged at the top of the machine tool body and comprises a placing seat, clamping seats are arranged on two sides of the top of the placing seat, and inner cavities of the clamping seats are fixedly connected with springs. The machine tool body is used for machining a workpiece, the workpiece can be placed through the placing base, the motor drives the rotating disc to rotate, then the rotating disc drives the transmission rod to move, the transmission rod drives the movable base and the connecting block to move towards one side, and the connecting block drives the left clamping base to move towards one side. The clamping base drives the rubber blocks to make contact with the workpiece, the concave-convex position of the workpiece can transmit force to the rubber blocks during contact, the rubber blocks are stressed to drive the springs to deform and stretch out and draw back, and due to the fact that the multiple rubber blocks are arranged, the irregular position of the surface of the workpiece can be well clamped, and the stability of the workpiece is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of workpiece fixing of numerically controlled lathes, in particular to a workpiece fixing device for numerically controlled lathes. Background Art

[0002] When a CNC machine tool is working, in order to ensure the accuracy of workpiece processing, a workpiece fixture is required to clamp and limit the workpiece. The workpiece fixture is a device used to clamp and position the workpiece to ensure the stability and accuracy of the workpiece during processing.

[0003] According to patent application number 202122008381.6, a workpiece clamping device for a CNC machine tool is disclosed, including a base, two clamping plates are slidably connected to the base, two columns are fixedly installed on the two clamping plates, and two conical holes and two spherical holes are respectively provided on the columns corresponding to the left and right positions, a driving mechanism matched with the two clamping plates is installed on the base, a positioning mechanism is installed on the base, and the positioning mechanism cooperates with the driving mechanism, which has the advantages that: there is no need to provide a groove body matched with the clamping assembly on the surface of the mounting surface (i.e., the base), so when the workpiece is processed, no workpiece debris will fall into the guide rail, thereby ensuring the smooth movement of the slider in the guide rail;

[0004] However, in actual use, the clamping plate is arranged in a plane, and when facing different types of workpieces, since the shapes of the workpieces are different, it is difficult to fix the irregularly shaped workpieces.

[0005] In summary, the utility model provides a workpiece fixing device for a CNC machine tool to solve the above problems. Utility Model Content

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

[0007] A workpiece fixing device for a CNC machine tool comprises a machine tool body, a fixing unit is arranged on the top of the machine tool body, the fixing unit comprises a placement seat, clamping seats are arranged on both sides of the top of the placement seat, a spring is fixedly connected to the inner cavity of the clamping seat, and the other end of the spring is fixedly connected to a rubber block, a motor is fixedly connected to the right side of the top of the placement seat, and the output shaft of the motor extends to the inner cavity of the placement seat, and a turntable is transmission-connected, the bottom of the turntable is movably connected to a transmission rod via a rotating shaft, and the other end of the transmission rod is movably connected to a movable seat via a rotating shaft, and the top of the movable seat is fixedly connected to a connecting block.

[0008] Furthermore, in the utility model, the clamping seat on the left is located at the top of the placement seat and is movably connected to the top of the placement seat, the bottom of the clamping seat on the right is fixedly connected to the top of the placement seat, and the top of the connecting block is fixedly connected to the clamping seat on the left.

[0009] Furthermore, in the utility model, a through slot is provided on the top of the placement seat, and the connecting block passes through the inner cavity of the through slot and is slidably connected with the inner cavity of the through slot.

[0010] Furthermore, in the utility model, limiting grooves are provided on the front and back sides of the inner cavity of the placement seat, and limiting rods are fixedly connected to the front and back sides of the movable seat. The limiting rods extend from one end away from the movable seat to the inner cavity of the limiting groove and are slidably connected to the inner cavity of the limiting groove.

[0011] Furthermore, in the utility model, a slide cylinder is provided in the inner cavity of the spring, and one end of the slide cylinder is fixedly connected to the inner wall of the clamping seat, a slide rod is slidably connected to the inner cavity of the slide cylinder, and the other end of the slide rod is fixedly connected to the rubber block.

[0012] Furthermore, in the utility model, both sides of the placement seat are fixedly connected with a clamping plate, and both sides of the top of the machine tool body are fixedly connected with a clamping block, and the clamping block is located in the inner cavity of the clamping plate and is movably connected to the inner cavity of the clamping plate.

[0013] Beneficial effects: The utility model has the following beneficial effects:

[0014] The utility model is used to process the workpiece through the machine tool body, the workpiece can be placed through the placement seat, the turntable is driven to rotate by the motor, and then the turntable can drive the transmission rod to move, the transmission rod drives the movable seat and the connecting block to move to one side, so that the connecting block drives the left clamping seat to move to one side, and the clamping seat drives the rubber block to contact with the workpiece, and while in contact, the concave and convex parts of the workpiece will transmit force to the rubber block, and the rubber block will deform and expand according to the driving spring when subjected to the force, and since a plurality of rubber blocks are provided, the irregular parts on the surface of the workpiece can be well clamped, thereby ensuring the stability of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the placement seat of the utility model;

[0018] Figure 4 This is a partial cross-sectional structural schematic diagram of the clamping seat of the utility model;

[0019] Figure 5 It is a schematic diagram of the connection structure of the card plate and the card block of the utility model.

[0020] In the figure:

[0021] 1. Machine tool body; 11. Clamping block; 2. Fixing unit; 21. Placement seat; 211. Through slot; 212. Limiting slot; 213. Clamping plate; 22. Clamping seat; 23. Spring; 231. Slide; 24. Rubber block; 25. Motor; 26. Turntable; 27. Transmission rod; 28. Movable seat; 281. Limiting rod; 29. ​​Connecting block. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0023] Example 1

[0024] like Figure 1-5 As shown, it is the first embodiment of the utility model, which provides a workpiece fixing device for a CNC machine tool, including a machine tool body 1, a fixing unit 2 is arranged on the top of the machine tool body 1, and the fixing unit 2 includes a placement seat 21, and clamping seats 22 are arranged on both sides of the top of the placement seat 21. The inner cavity of the clamping seat 22 is fixedly connected with a spring 23, and the other end of the spring 23 is fixedly connected with a rubber block 24, the right side of the top of the placement seat 21 is fixedly connected with a motor 25, and the output shaft of the motor 25 extends to the inner cavity of the placement seat 21, and is transmission-connected with a turntable 26, the bottom of the turntable 26 is movably connected with a transmission rod 27 through a rotating shaft, and the other end of the transmission rod 27 is movably connected with a movable seat 28 through a rotating shaft, and the top of the movable seat 28 is fixedly connected with a connecting block 29.

[0025] The left clamping seat 22 is located at the top of the placement seat 21 and is movably connected to the top of the placement seat 21 , the bottom of the right clamping seat 22 is fixedly connected to the top of the placement seat 21 , and the top of the connecting block 29 is fixedly connected to the left clamping seat 22 .

[0026] like Figure 1-4As shown, the machine tool body 1 is used to process the workpiece, and the workpiece is placed on the top of the placement seat 21. By turning on the motor 25, the output shaft of the motor 25 will drive the turntable 26 to rotate, and then the turntable 26 can be rotated while driving the transmission rod 27 to move. The transmission rod 27 pulls the movable seat 28 and the connecting block 29 to move to one side, so that the connecting block 29 drives the left clamping seat 22 to move to one side, and the clamping seat 22 drives the rubber block 24 to squeeze and contact the workpiece. While in contact, the concave and convex parts of the workpiece will transmit force to the rubber block 24. The rubber block 24 will deform and expand according to the driving spring 23 under the force. Since a plurality of rubber blocks 24 are provided, the irregular parts of the workpiece surface can be well clamped, thereby ensuring the stability of the workpiece and adapting to workpieces of different regular shapes.

[0027] Example 2

[0028] Reference Figure 2 and 3 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0029] In this embodiment, a through slot 211 is formed on the top of the placement seat 21 , and the connecting block 29 passes through the inner cavity of the through slot 211 and is slidably connected with the inner cavity of the through slot 211 .

[0030] The front and back sides of the inner cavity of the placement seat 21 are both provided with limiting grooves 212, and the front and back sides of the movable seat 28 are both fixedly connected with limiting rods 281. The limiting rod 281 extends from one end of the movable seat 28 to the inner cavity of the limiting groove 212 and is slidably connected to the inner cavity of the limiting groove 212.

[0031] like Figure 2 and 3 As shown, the connecting block 29 moves along the inner cavity trajectory of the through groove 211, so that the connecting block 29 can be limited, effectively preventing the connecting block 29 from being misplaced during movement. When the movable seat 28 drives the limiting rod 281 to slide in the inner cavity of the limiting groove 212, the movable seat 28 will move along the inner cavity trajectory of the limiting groove 212, thereby ensuring the stability of the movable seat 28 during movement.

[0032] Example 3

[0033] Reference Figure 1 , 4 and 5, which are the third embodiment of the present utility model, and this embodiment is based on the first two embodiments.

[0034] In this embodiment, a slide cylinder 231 is provided in the inner cavity of the spring 23 , and one end of the slide cylinder 231 is fixedly connected to the inner wall of the clamping seat 22 . A slide rod is slidably connected to the inner cavity of the slide cylinder 231 , and the other end of the slide rod is fixedly connected to the rubber block 24 .

[0035] Both sides of the placement seat 21 are fixedly connected with a clamping plate 213 , and both sides of the top of the machine tool body 1 are fixedly connected with a clamping block 11 . The clamping block 11 is located in the inner cavity of the clamping plate 213 and is movably connected to the inner cavity of the clamping plate 213 .

[0036] like Figure 1 , 4 As shown in FIG. 5 , when the rubber block 24 squeezes and deforms the spring 23, the slide rod will move along the inner cavity trajectory of the slide cylinder 231, thereby limiting the spring 23 and the rubber block 24. At the same time, when the block 11 enters the inner cavity of the card plate 213, the card plate 213 can be limited, thereby realizing the positioning of the placement seat 21.

[0037] When in use, first place the workpiece on the top of the placement seat 21 and on one side of the right clamping seat 22, then turn on the motor 25, the output shaft of the motor 25 will drive the turntable 26 to rotate, and then the turntable 26 can be rotated while driving the transmission rod 27 to move, the transmission rod 27 will pull the movable seat 28 to move to one side, the movable seat 28 drives the connecting block 29 to move to one side, so that the connecting block 29 drives the left clamping seat 22 to move to one side, the left clamping seat 22 will gradually squeeze the workpiece, so that the workpiece is between the two clamping seats 22, and the rubber block 24 is squeezed and contacted with the workpiece, while in contact, the concave and convex parts of the workpiece will transmit force to the rubber block 24, and the rubber block 24 will deform and expand according to the driving spring 23 under the force, and since a plurality of rubber blocks 24 are provided, the irregular parts of the workpiece surface can be well clamped, thereby ensuring the stability of the workpiece, and can adapt to workpieces of different regular shapes.

[0038] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0039] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A workpiece fixing device for a numerically controlled machine tool, comprising a machine tool body (1), characterized in that: A fixing unit (2) is arranged on the top of the machine tool body (1), and the fixing unit (2) comprises a placement seat (21). Clamping seats (22) are arranged on both sides of the top of the placement seat (21). A spring (23) is fixedly connected to the inner cavity of the clamping seat (22), and a rubber block (24) is fixedly connected to the other end of the spring (23). A motor (25) is fixedly connected to the right side of the top of the placement seat (21), and the output shaft of the motor (25) extends to the inner cavity of the placement seat (21), and a rotating disk (26) is connected in a transmission manner. The bottom of the rotating disk (26) is movably connected to a transmission rod (27) via a rotating shaft, and the other end of the transmission rod (27) is movably connected to a movable seat (28) via a rotating shaft, and the top of the movable seat (28) is fixedly connected to a connecting block (29).

2. The workpiece fixing device for a CNC machine tool as claimed in claim 1, characterized in that: The clamping seat (22) on the left side is located at the top of the placement seat (21) and is movably connected to the top of the placement seat (21), the bottom of the clamping seat (22) on the right side is fixedly connected to the top of the placement seat (21), and the top of the connecting block (29) is fixedly connected to the clamping seat (22) on the left side.

3. The workpiece fixing device for a CNC machine tool as claimed in claim 1, characterized in that: A through slot (211) is provided on the top of the placement seat (21), and the connection block (29) passes through the inner cavity of the through slot (211) and is slidably connected to the inner cavity of the through slot (211).

4. The workpiece fixing device for a CNC machine tool as claimed in claim 1, characterized in that: The front and back sides of the inner cavity of the placement seat (21) are both provided with limiting grooves (212); the front and back sides of the movable seat (28) are both fixedly connected to limiting rods (281); one end of the limiting rod (281) away from the movable seat (28) extends to the inner cavity of the limiting groove (212) and is slidably connected to the inner cavity of the limiting groove (212).

5. The workpiece fixing device for a CNC machine tool as claimed in claim 1, characterized in that: The inner cavity of the spring (23) is provided with a slide cylinder (231), and one end of the slide cylinder (231) is fixedly connected to the inner wall of the clamping seat (22); the inner cavity of the slide cylinder (231) is slidably connected to a slide rod, and the other end of the slide rod is fixedly connected to the rubber block (24).

6. The workpiece fixing device for a CNC machine tool as claimed in claim 1, characterized in that: Both sides of the placement seat (21) are fixedly connected with a clamping plate (213), and both sides of the top of the machine tool body (1) are fixedly connected with a clamping block (11), and the clamping block (11) is located in the inner cavity of the clamping plate (213) and is movably connected to the inner cavity of the clamping plate (213).

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