Precise lathe workpiece positioning device

Abstract

The utility model relates to the technical field of industrial production, in particular to a workpiece positioning device of a precision lathe. The bottom plate comprises a bottom plate body, a clamping device is arranged on the upper surface of the bottom plate body, the clamping device comprises two connecting plates, the two connecting plates are fixedly connected with the upper surface of the bottom plate body, operating rods are rotationally connected into the connecting plates, the ends, close to each other, of the two operating rods are fixedly connected with threaded rods, and the threaded rods are fixedly connected with the bottom plate body. The arc surface of the threaded rod is in threaded connection with a moving frame, a square plate is slidably inserted into the moving frame, an arc-shaped hole is formed in the surface of the moving frame, and a sliding rod is slidably connected to the surface of the arc-shaped hole of the moving frame. The problems that in the machining process, a workpiece deviates from the machining position, an operator needs to position and adjust the workpiece again, the machining process is frequently interrupted, the machining efficiency is reduced, the machining period is prolonged, and the production cost is increased are solved.

Description

Technical Field

[0001] This utility model relates to the field of industrial production technology, and in particular to a precision lathe workpiece positioning device. Background Technology

[0002] A lathe is a machine tool that mainly uses a cutting tool to machine rotating workpieces. Lathes in machine repair shops are generally used to machine various workpieces with rotating surfaces, end faces of rotating bodies, and helical surfaces. During the machining process, when the workpiece shifts, slips, or jumps during machining, it can easily damage the workpiece, and in severe cases, scrap the workpiece blank. On the other hand, it can also damage the lathe center and cutting tool, making the machining process unsafe and inefficient, and causing economic losses.

[0003] Chinese patent application CN202122036910.3 discloses a workpiece limiting device for a lathe. The key technical points are: the electric drive feed unit is connected to a threaded sliding seat via three feed screws; the side-pressure slide is fixedly installed on top of the threaded sliding seat. During operation, the electric drive feed unit, in conjunction with the three feed screws and the threaded sliding seat, drives the side-pressure slide to slide left and right above the sliding adjustment groove, facilitating quick disassembly and replacement of workpieces and improving the device's practicality. The drive shaft of the rotary drive is on the same horizontal plane as the pressure-sensing side-pressure block. When the electric drive tailstock drives the side-pressure slide to move horizontally towards the CNC lathe head to press and fix the workpiece, the pressure sensor inside the pressure-sensing side-pressure block can detect the pressure on the workpiece's pressure end in real time. This allows the worker to control the pressure applied to the workpiece based on the pressure value, avoiding damage due to excessive pressure and further improving the device's practicality.

[0004] Regarding the aforementioned and existing related technologies, the inventors believe that the following defects often exist: when the workpiece shifts, slips, or jumps during turning, on the one hand, it is easy to damage the workpiece, and in severe cases, it may cause the workpiece blank to be scrapped; on the other hand, it may damage the lathe center and cutting tool, resulting in low safety and efficiency of workpiece turning, and also causing economic losses. When the workpiece deviates from the machining position during the machining process, the operator needs to reposition and adjust the workpiece, which will lead to frequent interruptions in the machining process, thereby reducing machining efficiency, extending the machining cycle, and increasing production costs. Therefore, a precision lathe workpiece positioning device is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the workpiece deviates from its processing position during machining, requiring operators to reposition and adjust the workpiece, which leads to frequent interruptions in the machining process, resulting in reduced processing efficiency, extended processing cycles, and increased production costs. Therefore, this invention proposes a precision lathe workpiece positioning device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision lathe workpiece positioning device, comprising a base plate body, a clamping device provided on the upper surface of the base plate body, the clamping device comprising two connecting plates, both of which are fixedly connected to the upper surface of the base plate body, an operating rod rotatably connected inside the connecting plates, a threaded rod fixedly connected to one end of the two operating rods that are close to each other, a movable frame threadedly connected to the arc surface of the threaded rod, a square plate slidably inserted inside the movable frame, an arc-shaped hole opened on the surface of the movable frame, a sliding rod slidably connected to the surface of the arc-shaped hole of the movable frame, a clamping plate fixedly connected to one end of the sliding rod, a double arc plate slidably connected to the arc surface of the sliding rod, two insert rods fixedly connected to the surface of the double arc plate, a plurality of grooves opened on the surface of the movable frame, and the surfaces of the grooves of the movable frame slidably connected to the insert rods.

[0007] The effect achieved by the above-mentioned components is as follows: by setting up a clamping device, it is possible for the operator to clamp the lathe workpiece, avoiding the workpiece from deviating from the processing position during the processing. This would require the operator to reposition and adjust the workpiece, which would lead to frequent interruptions in the processing process, resulting in reduced processing efficiency, extended processing cycle, and increased production costs, thus improving the reliability of the device.

[0008] Preferably, a first spring is fitted onto the arc surface of the sliding rod, and the two ends of the first spring are fixedly connected to the double arc plate and the sliding rod, respectively.

[0009] The effect achieved by the above-mentioned components is to improve the stability of the insert rod, and to prevent the insert rod from sliding on the surface of the groove of the moving frame due to the shaking caused by the lathe operation when operating the workpiece, thus preventing the insert rod from slipping out of the groove of the moving frame.

[0010] Preferably, the arc surface of the sliding rod is rotatably connected to a blocking plate, the surface of the blocking plate is provided with a circular groove, and the blocking plate is slidably connected to the surface of the movable frame.

[0011] The effect achieved by the above components is to restrict the movement of the insertion rod, and to prevent the insertion rod from being affected by the movement of the sliding rod when the clamping plate is moved. This would prevent the insertion rod from being inserted into the incorrect circular groove of the moving frame before the clamping plate is moved to the appropriate position, which would require the operator to manually pull the double arc plate to move the clamping plate and increase the operator's workload.

[0012] Preferably, the inner surface of the movable frame is rotatably connected to four positioning plates, and the size of the insertion rod is adapted to the size of the circular groove of the blocking plate.

[0013] The aforementioned components achieve the effect of quickly positioning the clamping plate, reducing the time required for workers to clamp and adjust workpieces on the lathe, and improving the working efficiency of the device.

[0014] Preferably, the surface of the base plate body is provided with a collection device, the collection device including a collection chamber, the collection chamber being slidably connected to the surface of the base plate body, connecting rods being fixedly connected to both sides of the connecting plate, a rotating plate being rotatably connected to the arc surface of the connecting rods, two L-shaped plates being fixedly connected to both sides of the collection chamber, a round rod being slidably inserted into the L-shaped plate, the arc surface of the round rod being slidably connected to the rotating plate, the arc surface of the round rod being slidably connected to the collection chamber, and a round plate being fixedly connected to one end of the connecting rod.

[0015] The effect achieved by the above-mentioned components is as follows: by setting up a collection device, the effect of collecting debris is achieved, avoiding the difficulty in completely removing debris. Debris staying on the surface of the lathe or entering the interior of the lathe and causing a certain degree of friction, will lead to a decrease in the accuracy of the lathe guide rail and an increase in surface roughness. This will result in the need for multiple maintenance of the lathe or frequent replacement of corresponding parts of the lathe, thus improving the reliability of the device.

[0016] Preferably, the arc surface of the connecting rod is fitted with a torsion spring, and the two ends of the torsion spring are fixedly connected to the circular plate and the rotating plate, respectively.

[0017] The aforementioned components achieve the following effect: they automatically open the rotating plate and keep it open, making it convenient for staff to return the collection bin after cleaning.

[0018] Preferably, a limiting plate is fixedly connected to the arc surface of the round rod, and the limiting plate is slidably connected to the surface of the rotating plate.

[0019] The aforementioned components achieve the following effect: preventing the round rod from being pulled off, thus avoiding situations where excessive force is applied when pulling the round rod, causing it to slide too far within the L-shaped plate and separate from it, requiring reinstallation during use.

[0020] In summary, the beneficial effects of this utility model are as follows:

[0021] 1. In this utility model, by setting up a clamping device, the effect of facilitating the operator to clamp the lathe workpiece is achieved, avoiding the workpiece from deviating from the processing position during the processing. This would require the operator to reposition and adjust the workpiece, which would lead to frequent interruptions in the processing process, resulting in reduced processing efficiency, extended processing cycle, and increased production costs. This improves the reliability of the device.

[0022] 2. In this utility model, by setting up a collection device, the effect of collecting debris is achieved, avoiding the difficulty in completely removing debris. Debris staying on the surface of the lathe or entering the interior of the lathe and causing a certain degree of friction, leads to a decrease in the accuracy of the lathe guide rail and an increase in surface roughness, resulting in the need for multiple maintenance of the lathe or frequent replacement of corresponding parts of the lathe. This improves the reliability of the device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the clamping device in this utility model;

[0025] Figure 3 This is a partial structural diagram of the clamping device in this utility model;

[0026] Figure 4 This is a schematic diagram of the collecting device in this utility model;

[0027] Figure 5 This is a partial structural diagram of the collecting device in this utility model.

[0028] Legend: 1. Base plate body; 2. Clamping device; 3. Collection device; 201. Connecting plate; 202. Operating lever; 203. Threaded rod; 204. Square plate; 205. Moving frame; 206. Clamping plate; 207. Sliding rod; 208. Double arc plate; 209. Insert rod; 210. First spring; 211. Positioning plate; 212. Blocking plate; 31. Collection bin; 32. L-shaped plate; 33. Round rod; 34. Connecting rod; 35. Rotating plate; 36. Round plate; 37. Torsion spring; 38. Limiting plate. Detailed Implementation

[0029] Reference Figure 1As shown, this utility model provides a technical solution: a precision lathe workpiece positioning device, including a base plate body 1. The upper surface of the base plate body 1 is provided with a clamping device 2. By setting the clamping device 2, the operator can easily clamp the lathe workpiece, avoiding the workpiece deviating from the processing position during the processing. This would require the operator to reposition and adjust the workpiece, which would lead to frequent interruptions in the processing process, resulting in reduced processing efficiency, extended processing cycle, and increased production costs. This improves the reliability of the device. The surface of the base plate body 1 is provided with a collecting device 3. By setting the collecting device 3, the debris is collected, avoiding the difficulty in completely removing debris. Debris staying on the lathe surface or entering the lathe interior causes a certain degree of friction, leading to a decrease in the accuracy of the lathe guide rails and an increase in surface roughness. This would result in the need for multiple lathe repairs or frequent replacement of corresponding lathe parts, thus improving the reliability of the device.

[0030] The specific setup and function of the clamping device 2 and the collecting device 3 will be explained in detail below.

[0031] Reference Figure 2 and Figure 3As shown, in this embodiment: the clamping device 2 includes two connecting plates 201, both of which are fixedly connected to the upper surface of the base plate body 1. An operating rod 202 is rotatably connected within the connecting plates 201. A threaded rod 203 is fixedly connected to one end of each operating rod 202 that is close to the other. A movable frame 205 is threadedly connected to the arc surface of the threaded rod 203. A square plate 204 is slidably inserted into the movable frame 205. An arc-shaped hole is formed on the surface of the movable frame 205. A sliding rod 207 is slidably connected to the surface of the arc-shaped hole of the movable frame 205. A clamping plate 206 is fixedly connected to one end of the sliding rod 207. A double-arc plate 208 is slidably connected to the arc surface of the sliding rod 207. Two insertion rods 209 are fixedly connected to the surface of the double-arc plate 208. The surface of the movable frame 205 has several grooves. The surface of the grooves of the movable frame 205 is slidably connected to the insertion rod 209. The arc surface of the sliding rod 207 is fitted with a first spring 210. The two ends of the first spring 210 are fixedly connected to the double arc plate 208 and the sliding rod 207, respectively. When the operator needs to clamp the lathe workpiece, the operator first places the clamping part on the surface of the movable frame 205. Then, the operator pulls the double arc plate 208 to drive the insertion rod 209 to slide on the arc surface of the sliding rod 207. At this time, the first spring 210 is compressed. The operator can then pull the sliding rod 207 to drive the clamping plate 206 to slide on the surface of the arc hole of the movable frame 205 until the surface of the clamping plate 206 is in contact with the clamping part. At this time, the operator releases the double arc plate 208. The rebound force of the first spring 210 causes the double-arc plate 208 to slide on the arc surface of the sliding rod 207. The double-arc plate 208 drives the insertion rod 209 to move until the insertion rod 209 is inserted into the groove of the moving frame 205. At this time, the stability of the insertion rod 209 is improved, avoiding the shaking caused by the lathe operation when operating the lathe workpiece, which would cause the insertion rod 209 to slide on the surface of the groove of the moving frame 205 and fall out of the groove of the moving frame 205. The arc surface of the sliding rod 207 is rotatably connected to the blocking plate 212. The surface of the blocking plate 212 has a circular groove. The blocking plate 212 is slidably connected to the surface of the moving frame 205. When the operator needs to clamp the lathe workpiece, the operator first releases the clamping plate 207. The limit is set at 6. Then, the operator can rotate the blocking plate 212 to slide it on the arc surface of the sliding rod 207. The operator then releases the double-arc plate 208. At this time, the rebound force of the first spring 210 drives the double-arc plate 208 to move, which in turn drives the insertion rod 209 to move until the insertion rod 209 is inserted into the circular groove of the blocking plate 212. This achieves the effect of limiting the movement of the insertion rod 209, preventing the insertion rod 209 from being affected by the movement of the sliding rod 207 when the operator moves the clamping plate 206. This would prevent the insertion rod 209 from being inserted into the incorrect circular groove of the moving frame 205 before the clamping plate 206 is moved to the appropriate position, thus increasing the operator's workload as they would have to manually pull the double-arc plate 208 to move it.Four positioning plates 211 are rotatably connected to the inner surface of the movable frame 205. The size of the insertion rod 209 matches the size of the circular groove of the blocking plate 212. When the operator needs to adjust the clamping plate 206 to a certain distance, the operator first rotates the required positioning plate 211, then releases the limit on the clamping plate 206, and then moves the clamping plate 206 to slide on the surface of the movable frame 205 until the surface of the clamping plate 206 is in contact with the positioning plate 211. At this point, the effect of quickly positioning the clamping plate 206 is achieved, reducing the time required for the operator to clamp and adjust the workpiece on the lathe, and improving the working efficiency of the device.

[0032] Reference Figure 4 and Figure 5 As shown, specifically, the collection device 3 includes a collection chamber 31, which is slidably connected to the surface of the base plate 1. Connecting rods 34 are fixedly connected to both sides of the connecting plate 201. A rotating plate 35 is rotatably connected to the arc surface of the connecting rods 34. Two L-shaped plates 32 are fixedly connected to both sides of the collection chamber 31. A round rod 33 is slidably inserted into the L-shaped plate 32. The arc surface of the round rod 33 is slidably connected to the rotating plate 35, and the arc surface of the round rod 33 is slidably connected to the collection chamber 31. One end of the connecting rod 34 is fixedly connected to a round... Plate 36 and connecting rod 34 have a torsion spring 37 fitted on their arc surfaces. The two ends of the torsion spring 37 are fixedly connected to the circular plate 36 and rotating plate 35, respectively. When workers need to clean debris from the collection chamber 31, they first pull the circular rod 33 to slide it within the L-shaped plate 32 until the arc surface of the circular rod 33 is completely disengaged from the rotating plate 35. At this point, the torque of the torsion spring 37 causes the rotating plate 35 to rotate on the arc surface of the connecting rod 34 until the surface of the rotating plate 35 is completely separated from the collection chamber 31. Then, workers can pull the collection chamber... 31 slides on the upper surface of the base plate 1 until the collection chamber 31 is completely separated from the base plate 1. At this time, the worker can clean the collection chamber 31. This achieves the effect of automatically opening the rotating plate 35, while keeping the rotating plate 35 in the open state, making it convenient for the worker to put the collection chamber 31 back after cleaning. The arc surface of the round rod 33 is fixedly connected to the limiting plate 38. The limiting plate 38 is slidably connected to the surface of the rotating plate 35. When the worker needs to clean the collection chamber 31, the worker first pulls the round rod 33... The L-shaped plate 32 slides inside, and the round rod 33 drives the limiting plate 38 to slide on the surface of the rotating plate 35 until the limiting plate 38 is in contact with the inner surface of the L-shaped plate 32. At this time, the arc surface of the round rod 33 is completely separated from the rotating plate 35, which achieves the effect of preventing the round rod 33 from being pulled off. This avoids the situation where the operator uses too much force when pulling the round rod 33, causing the round rod 33 to slide too far inside the L-shaped plate 32, thus causing the round rod 33 to separate from the L-shaped plate 32, and requiring the operator to reinstall it when using it.

[0033] Working principle: When the operator needs to clamp a lathe workpiece, firstly, the operator fixes the base plate 1 to the surface of the lathe equipment. Then, the operator can rotate the positioning plate 211, placing the clamping part on the surface of the moving frame 205. The operator pulls the double-arc plate 208, causing the insertion rod 209 to slide on the arc surface of the sliding rod 207. At this time, the first spring 210 is compressed. Then, the operator can rotate the blocking plate 212, which slides on the arc surface of the sliding rod 207. The operator releases the double-arc plate 208, and the rebound force of the first spring 210 causes the double-arc plate 208 to move. The double-arc plate 208 causes the insertion rod 209 to move until the insertion rod 209 is inserted into the circular groove of the blocking plate 212. The operator can then pull the sliding rod 207, causing the clamping plate 206 to move in the arc-shaped hole of the moving frame 205. The surface of the clamping plate 206 slides until it is in contact with the clamping part. At this time, the operator pulls the double arc plate 208 to slide on the surface of the circular groove of the blocking plate 212. After it is completely separated, the operator rotates the blocking plate 212 and then releases the double arc plate 208. At this time, the rebound force of the first spring 210 drives the double arc plate 208 to slide on the arc surface of the sliding rod 207. The double arc plate 208 drives the insertion rod 209 to move until the insertion rod 209 is inserted into the groove of the moving frame 205. This achieves the effect of facilitating the operator to clamp the lathe workpiece, avoiding the workpiece from deviating from the processing position during the processing. If the operator needs to reposition and adjust the workpiece, it will cause frequent interruptions in the processing process, resulting in reduced processing efficiency, extended processing cycle, increased production cost, and improved reliability of the device.

[0034] When the operator needs to clean the debris in the collection chamber 31, the operator first pulls the round rod 33 to slide it inside the L-shaped plate 32. The round rod 33 drives the limiting plate 38 to slide on the surface of the rotating plate 35 until the limiting plate 38 is in contact with the inner surface of the L-shaped plate 32. At this time, the arc surface of the round rod 33 is completely separated from the rotating plate 35. Then, the torque of the torsion spring 37 drives the rotating plate 35 to rotate on the arc surface of the connecting rod 34 until the surface of the rotating plate 35 is completely separated from the collection chamber 31. Then the operator can pull the collection chamber 31 to slide it on the upper surface of the base plate body 1 until the collection chamber 31 is completely separated from the base plate body 1. This achieves the effect of collecting debris and avoids the debris being difficult to completely remove. The debris stays on the surface of the lathe or enters the interior of the lathe and causes a certain degree of friction, which leads to a decrease in the accuracy of the lathe guide rail and an increase in surface roughness. This results in the need for multiple maintenance of the lathe or frequent replacement of corresponding parts of the lathe, thus improving the reliability of the device.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A precision lathe workpiece positioning device, comprising a base plate body (1), characterized in that: The upper surface of the base plate body (1) is provided with a clamping device (2). The clamping device (2) includes two connecting plates (201). Both connecting plates (201) are fixedly connected to the upper surface of the base plate body (1). An operating rod (202) is rotatably connected inside the connecting plate (201). A threaded rod (203) is fixedly connected to one end of the two operating rods (202) that is close to each other. A movable frame (205) is threadedly connected to the arc surface of the threaded rod (203). A square plate (204) is slidably inserted inside the movable frame (205). The surface of the movable frame (205) is provided with an arc-shaped hole, and a sliding rod (207) is slidably connected to the surface of the arc-shaped hole of the movable frame (205). One end of the sliding rod (207) is fixedly connected to a clamping plate (206), and a double arc plate (208) is slidably connected to the arc surface of the sliding rod (207). Two insert rods (209) are fixedly connected to the surface of the double arc plate (208). The surface of the movable frame (205) is provided with a plurality of grooves, and the surface of the grooves of the movable frame (205) is slidably connected to the insert rods (209).

2. The precision lathe workpiece positioning device according to claim 1, characterized in that: The arc surface of the sliding rod (207) is fitted with a first spring (210), and the two ends of the first spring (210) are fixedly connected to the double arc plate (208) and the sliding rod (207) respectively.

3. The precision lathe workpiece positioning device according to claim 1, characterized in that: The arc surface of the sliding rod (207) is rotatably connected to a blocking plate (212), the surface of the blocking plate (212) is provided with a circular groove, and the blocking plate (212) is slidably connected to the surface of the movable frame (205).

4. The precision lathe workpiece positioning device according to claim 3, characterized in that: The inner surface of the movable frame (205) is rotatably connected to four positioning plates (211), and the size of the insert rod (209) is adapted to the size of the circular groove of the blocking plate (212).

5. A precision lathe workpiece positioning device according to claim 1, characterized in that: The surface of the base plate body (1) is provided with a collection device (3). The collection device (3) includes a collection chamber (31). The collection chamber (31) is slidably connected to the surface of the base plate body (1). A connecting rod (34) is fixedly connected to both sides of the connecting plate (201). A rotating plate (35) is rotatably connected to the arc surface of the connecting rod (34). Two L-shaped plates (32) are fixedly connected to both sides of the collection chamber (31). A round rod (33) is slidably inserted into the L-shaped plate (32). The arc surface of the round rod (33) is slidably connected to the rotating plate (35). The arc surface of the round rod (33) is slidably connected to the collection chamber (31). A round plate (36) is fixedly connected to one end of the connecting rod (34).

6. The precision lathe workpiece positioning device according to claim 5, characterized in that: The arc surface of the connecting rod (34) is fitted with a torsion spring (37), and the two ends of the torsion spring (37) are fixedly connected to the circular plate (36) and the rotating plate (35) respectively.

7. A precision lathe workpiece positioning device according to claim 5, characterized in that: The circular rod (33) has a fixed connection to a limiting plate (38) on its arc surface, and the limiting plate (38) is slidably connected to the surface of the rotating plate (35).

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