A high-precision precision positioning device for a numerical control lathe

Abstract

This invention provides a high-precision positioning device for CNC lathes, relating to the field of CNC lathe positioning devices. It includes a lathe body, with an adjustment assembly at the bottom of the lathe body's internal cavity and a positioning assembly at the top of the adjustment assembly. The invention uses the output end of an electric push rod to move a movable plate and a clamping plate towards the workpiece, causing the clamping plate to bring a rubber pad into contact with the workpiece, thus positioning the workpiece. The rubber pad's deformation capability allows it to adapt to irregular workpiece surfaces, increasing the workpiece positioning range. The output end of the electric push rod moves the movable plate, clamping plate, rubber pad, and workpiece, enabling left-right position adjustment of the workpiece. The output shaft of a servo motor drives a transmission rod and gear to rotate. Due to the meshing of the gear and gear plate, the gear rotation simultaneously drives the transmission rod and servo motor to move to one side. The transmission rod then moves the connecting rod, positioning assembly, and workpiece, thereby adjusting the workpiece's front-to-back position.

Description

Technical Field

[0001] This utility model belongs to the field of CNC lathe positioning devices, specifically a high-precision positioning device for CNC lathes. Background Technology

[0002] In order to improve machining accuracy and efficiency, CNC lathes use positioning devices to position the workpiece during machining, ensuring the workpiece is accurately positioned on the lathe and thus guaranteeing that the machined parts meet the design requirements.

[0003] According to patent application number 202122778991.4, a precision CNC lathe positioning device is disclosed, including a device base and a worktable. The left and right ends of the device base are connected to the left and right ends of the worktable via connectors. A left support seat is connected to the upper left end of the device base, and a right support seat is connected to the upper right end of the left support seat. A ball screw is connected between the left and right support seats. A left nut seat is connected to the left end of the ball screw, and a right nut seat is connected to the right end of the ball screw. This prior art, by setting up a ball screw, a left support, a right support, a left nut seat, a right nut seat, and a positioning block, utilizes the mutual cooperation between them to achieve rapid workpiece positioning. The positioning time is short, the positioning is accurate, the operation is smooth, the clamping is firm, and the operation is convenient, thus improving work efficiency.

[0004] However, in the existing technology, if the clamping position is out of place after the workpiece is clamped and fixed, and the clamping position needs to be adjusted, the workpiece needs to be removed by personnel, the clamping position needs to be readjusted, and the workpiece needs to be fixed again. This process is quite cumbersome, which will affect the efficiency of the lathe in processing the workpiece.

[0005] In summary, this utility model provides a high-precision positioning device for CNC lathes to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A high-precision positioning device for a CNC lathe includes a lathe body. An adjustment assembly is located at the bottom of the lathe body's inner cavity, and a positioning assembly is located at the top of the adjustment assembly. The adjustment assembly includes a connecting seat, and a servo motor is housed within the inner cavity of the connecting seat. The output shafts at both ends of the servo motor are driven by transmission rods, and the other end of each transmission rod is fixedly connected to a gear. Gear plates are fixedly connected to both sides of the bottom of the inner cavity of the connecting seat, and the gears and gear plates mesh with each other. A connecting rod is movably connected to the surface of the transmission rod via bearings. The positioning assembly includes a movable seat, and clamping plates are movably connected to both sides of the top of the movable seat. Rubber pads are fixedly connected to the adjacent sides of the two clamping plates. Electric push rods are fixedly connected to both sides of the inner cavity of the movable seat, and a movable plate is fixedly connected to the output end of each electric push rod.

[0008] Furthermore, in this utility model, the top of the movable plate is fixedly connected to the bottom of the clamping plate, the top of the connecting rod is fixedly connected to the bottom of the movable seat, and the side of the rubber pad away from the clamping plate contacts the workpiece.

[0009] Furthermore, in this utility model, the top of the movable seat is provided with a second through groove, and the movable plate passes through the inner cavity of the second through groove and is slidably connected with the inner cavity of the second through groove.

[0010] Furthermore, in this utility model, the top of the connecting seat is provided with a first through groove, and the connecting rod passes through the inner cavity of the first through groove and is slidably connected with the inner cavity of the first through groove.

[0011] Furthermore, in this utility model, a T-shaped block is fixedly connected to the bottom of the servo motor, and a T-shaped groove is opened at the bottom of the inner cavity of the connecting seat. The T-shaped block is located in the inner cavity of the T-shaped groove and is slidably connected to the inner cavity of the T-shaped groove.

[0012] Furthermore, in this utility model, a support plate is fixedly connected to the top of the lathe body, and a microcontroller is fixedly connected to the bottom of one end of the support plate. The output end of the microcontroller is connected to the input end of the electric push rod and the servo motor, respectively.

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

[0014] This invention positions the workpiece at the top of the movable seat, with the output end of the electric push rod driving the movable plate and clamping plate to move towards the workpiece. This causes the clamping plate to bring the rubber pad into contact with the workpiece, thereby achieving workpiece positioning. The deformation capability of the rubber pad allows it to adapt to the surface of irregular workpieces, thus improving the workpiece positioning range. The output end of the electric push rod drives the movable plate, clamping plate, rubber pad, and workpiece to move, thereby achieving left-right position adjustment of the workpiece. The output shaft of the servo motor drives the transmission rod and gear to rotate. Due to the meshing of the gear and gear plate, the rotation of the gear drives the transmission rod and servo motor to move to one side. The transmission rod drives the connecting rod, positioning assembly, and workpiece to move, thereby achieving front-back position adjustment of the workpiece. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the connection structure between the adjustment component and the positioning component of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the movable seat of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the connector of this utility model.

[0019] In the picture:

[0020] 1. Lathe body; 11. Support plate; 12. Microcontroller; 2. Adjustment assembly; 21. Connecting seat; 211. First through slot; 212. T-slot; 22. Servo motor; 221. T-block; 23. Transmission rod; 24. Gear; 25. Gear plate; 26. Connecting rod; 3. Positioning assembly; 31. Movable seat; 311. Second through slot; 32. Electric push rod; 33. Movable plate; 34. Clamping plate; 35. Rubber pad. Detailed Implementation

[0021] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described 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 this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0022] Example 1

[0023] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a precision positioning device for a high-precision CNC lathe, including a lathe body 1. An adjustment component 2 is provided at the bottom of the inner cavity of the lathe body 1, and a positioning component 3 is provided at the top of the adjustment component 2. The adjustment component 2 includes a connecting seat 21, and a servo motor 22 is provided in the inner cavity of the connecting seat 21. The output shafts at both ends of the servo motor 22 are driven by a transmission rod 23. A gear 24 is fixedly connected to the other end of the transmission rod 23. Gear plates 25 are fixedly connected to both sides of the bottom of the inner cavity of the connecting seat 21, and the gear 24 and the gear plates 25 mesh with each other. A connecting rod 26 is movably connected to the surface of the transmission rod 23 through a bearing. The positioning component 3 includes a movable seat 31, and clamping plates 34 are movably connected to both sides of the top of the movable seat 31. A rubber pad 35 is fixedly connected to the side of the two clamping plates 34 that are close to each other. An electric push rod 32 is fixedly connected to both sides of the inner cavity of the movable seat 31, and a movable plate 33 is fixedly connected to the output end of the electric push rod 32.

[0024] like Figure 1-4 As shown, with the workpiece positioned on top of the movable seat 31, the output end of the electric push rod 32 drives the movable plate 33 and clamping plate 34 to move towards the workpiece, causing the clamping plate 34 to bring the rubber pad 35 into contact with the workpiece, thereby achieving workpiece positioning. The rubber pad 35's deformation capability allows it to adapt to irregular workpiece surfaces, thus improving the workpiece positioning range. When workpiece position adjustment is needed after positioning, the output ends of the two electric push rods 32 move in opposite directions; for example, one electric push rod 32 retracts, and the other... The output end of the electric push rod 32 extends, allowing the rubber pad 35 to push the workpiece to one side while in contact with it, thus enabling the left and right position adjustment of the workpiece. The output shaft of the servo motor 22 drives the transmission rod 23 and gear 24 to rotate. Since the gear 24 meshes with the toothed plate 25, the gear 24 can move to one side while rotating on the top of the toothed plate 25, causing the gear 24 to drive the transmission rod 23 and the servo motor 22 to move to one side. The transmission rod 23 drives the connecting rod 26, the positioning component 3, and the workpiece to move, thereby achieving the adjustment of the front and rear position of the workpiece.

[0025] Example 2

[0026] Reference Figure 1-3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0027] In this embodiment, the top of the movable plate 33 is fixedly connected to the bottom of the clamping plate 34, the top of the connecting rod 26 is fixedly connected to the bottom of the movable seat 31, and the side of the rubber pad 35 away from the clamping plate 34 contacts the workpiece.

[0028] The top of the movable seat 31 is provided with a second through groove 311, and the movable plate 33 passes through the inner cavity of the second through groove 311 and is slidably connected to the inner cavity of the second through groove 311.

[0029] The top of the connecting seat 21 is provided with a first through groove 211, and the connecting rod 26 passes through the inner cavity of the first through groove 211 and is slidably connected with the inner cavity of the first through groove 211.

[0030] like Figure 1-3 As shown, the rubber pad 35 contacts the workpiece, thereby increasing the contact friction and preventing the workpiece from sliding. At the same time, the deformation capability of the rubber pad 35 allows it to adapt to the surface of irregular workpieces, which not only improves the anti-slip performance after the workpiece is positioned, but also adapts to the positioning operation of workpieces with different regular shapes. When the movable plate 33 moves, it slides along the inner cavity of the second through groove 311, thereby limiting the movement trajectory of the movable plate 33 and preventing the movable plate 33 from being misaligned. When the connecting rod 26 moves, it slides along the inner cavity of the first through groove 211, thereby limiting the connecting rod 26 and preventing the connecting rod 26 from rotating with the transmission rod 23 during movement.

[0031] Example 3

[0032] Reference Figure 1 , 3 4 and 5 are the third embodiment of this utility model, which is based on the first two embodiments.

[0033] In this embodiment, a T-shaped block 221 is fixedly connected to the bottom of the servo motor 22, and a T-shaped groove 212 is provided at the bottom of the inner cavity of the connecting seat 21. The T-shaped block 221 is located in the inner cavity of the T-shaped groove 212 and is slidably connected to the inner cavity of the T-shaped groove 212.

[0034] A support plate 11 is fixedly connected to the top of the lathe body 1, and a microcontroller 12 is fixedly connected to the bottom of one end of the support plate 11. The output end of the microcontroller 12 is connected to the input end of the electric push rod 32 and the servo motor 22 respectively.

[0035] like Figure 1 , 3 As shown in Figure 4, the microcontroller 12 can be supported by the support plate 11. Since the microcontroller 12 is connected to the electric push rod 32 and the servo motor 22 respectively, the microcontroller 12 can control the operation of the electric push rod 32 and the servo motor 22 to realize automated operation. When the servo motor 22 moves, it will drive the T-block 221 to slide in the inner cavity of the T-slot 212, thereby ensuring the stability of the servo motor 22 during movement and preventing the servo motor 22 from being misaligned during movement.

[0036] In use, the workpiece is first placed on top of the movable seat 31. Then, the electric push rods 32 are activated via the microcontroller 12. The output ends of both electric push rods 32 drive the movable plates 33 to move towards each other, causing the movable plates 33 to move the clamping plates 34 towards the workpiece. The clamping plates 34 then bring the rubber pads 35 into contact with the workpiece, thus achieving workpiece positioning. The rubber pads 35, through their contact with the workpiece, can adapt to irregular workpiece surfaces due to their deformation capacity. This not only improves the anti-slip properties after workpiece positioning but also adapts to positioning operations for workpieces of different shapes. When the workpiece position needs to be adjusted left or right after positioning, the electric push rods 32 are activated via the microcontroller 12, causing the output ends of the two electric push rods 32 to move in opposite directions, while the two movable plates 33 move in the same direction. The output end of one electric push rod 32 retracts to one side, while the output end of the other electric push rod 32 moves to the other side. Extending further, the two movable plates 33 can drive the clamping plate 34 and the rubber pad 35 to move in the same direction, ensuring that the rubber pad 35 is always in contact with the workpiece. Simultaneously, the rubber pad 35 can also move the workpiece to one side, thus enabling left-right position adjustment. When the workpiece needs to be adjusted forward or backward, the microcontroller 12 first activates the servo motor 22. The output shaft of the servo motor 22 drives the transmission rod 23 and gear 24 to rotate forward or backward. Since the gear 24 meshes with the toothed plate 25, the gear 24 can move to one side while rotating on top of the toothed plate 25. This causes the gear 24 to drive the transmission rod 23 and the servo motor 22 to move to one side. The transmission rod 23 then drives the connecting rod 26 and the movable seat 31 to move, causing the movable seat 31 to move the clamping plate 34, the rubber pad 35, and the workpiece, thus achieving forward or backward position adjustment of the workpiece. The entire process does not require removing the workpiece for adjustment, improving ease of use.

[0037] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment 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 by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A precision positioning device for a high-precision CNC lathe, comprising a lathe body (1), characterized in that: An adjustment assembly (2) is provided at the bottom of the inner cavity of the lathe body (1), and a positioning assembly (3) is provided at the top of the adjustment assembly (2). The adjustment assembly (2) includes a connecting seat (21), and a servo motor (22) is provided in the inner cavity of the connecting seat (21). The output shafts at both ends of the servo motor (22) are driven by transmission rods (23). The other end of the transmission rods (23) is fixedly connected to a gear (24). Gear plates (25) are fixedly connected to both sides of the bottom of the inner cavity of the connecting seat (21), and the gears... (24) meshes with the toothed plate (25). The surface of the transmission rod (23) is movably connected to the connecting rod (26) via a bearing. The positioning assembly (3) includes a movable seat (31), and clamping plates (34) are movably connected to both sides of the top of the movable seat (31). Rubber pads (35) are fixedly connected to the side of the two clamping plates (34) that are close to each other. Electric push rods (32) are fixedly connected to both sides of the inner cavity of the movable seat (31), and a movable plate (33) is fixedly connected to the output end of the electric push rod (32).

2. The precision positioning device for a high-precision CNC lathe as described in claim 1, characterized in that: The top of the movable plate (33) is fixedly connected to the bottom of the clamping plate (34), the top of the connecting rod (26) is fixedly connected to the bottom of the movable seat (31), and the side of the rubber pad (35) away from the clamping plate (34) contacts the workpiece.

3. The precision positioning device for a high-precision CNC lathe as described in claim 1, characterized in that: The top of the movable seat (31) is provided with a second through groove (311), and the movable plate (33) passes through the inner cavity of the second through groove (311) and is slidably connected to the inner cavity of the second through groove (311).

4. The precision positioning device for a high-precision CNC lathe as described in claim 1, characterized in that: The top of the connecting seat (21) is provided with a first through groove (211), and the connecting rod (26) passes through the inner cavity of the first through groove (211) and is slidably connected to the inner cavity of the first through groove (211).

5. The precision positioning device for a high-precision CNC lathe as described in claim 1, characterized in that: The bottom of the servo motor (22) is fixedly connected to a T-shaped block (221), and a T-shaped groove (212) is opened at the bottom of the inner cavity of the connecting seat (21). The T-shaped block (221) is located in the inner cavity of the T-shaped groove (212) and is slidably connected to the inner cavity of the T-shaped groove (212).

6. The precision positioning device for a high-precision CNC lathe as described in claim 1, characterized in that: The top of the lathe body (1) is fixedly connected to a support plate (11), and a microcontroller (12) is fixedly connected to the bottom of one end of the support plate (11). The output end of the microcontroller (12) is connected to the input end of the electric push rod (32) and the servo motor (22), respectively.

Images