Positioning device for lathe spindle

Abstract

The utility model relates to the technical field of lathe equipment, in particular to a positioning device for a lathe spindle, which comprises a screw rod with the right end inserted in the lathe spindle, a nut is in threaded connection with a rod body of the screw rod, the left end of the lathe spindle is positioned in the nut, and the nut and the lathe spindle are fixed through a first bolt. The nut, the lathe spindle and the lead screw are fixed through a second bolt. The left end of the workpiece extends into the lathe spindle and abuts against the right end face of the screw rod, the workpiece is clamped through the locking chuck, the right end face of the turned workpiece is positioned through the scale of the large lathe carriage, and then the workpiece is reversely clamped through the locking chuck. The other end face of the turning workpiece is positioned through the lathe carriage scale to meet the size requirement, the numerical value of lathe carriage scale positioning is recorded, other workpieces are turned according to the numerical value of lathe carriage scale positioning, time for frequent measurement is saved, and size uniformity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lathe equipment technology, and specifically to a positioning device for a lathe spindle. Background Technology

[0002] In lathe machining, some shaft-type workpieces need to be lengthened to ensure dimensional consistency and avoid affecting subsequent processes. For example, in the production of idler roller shafts for non-coal mines, the process involves: blanking—lengthening and centering on a lathe—milling the groove on a milling machine. When lengthening idler roller shafts on a lathe, it's difficult to guarantee uniform dimensions using ordinary machining methods. Furthermore, each workpiece requires measurement, recording the data, cutting one end face on the lathe, then measuring again and cutting the other end face. This cumbersome operation causes inconvenience and difficulty in machining, and makes it challenging to ensure dimensional uniformity. Utility Model Content

[0003] The purpose of this invention is to solve the problems that when cutting the length of workpieces such as roller shafts on a lathe, it is difficult to ensure uniform dimensions using ordinary processing methods. Moreover, each workpiece requires measurement and data recording, which is cumbersome and causes inconvenience and difficulty in processing. In addition, it is not easy to ensure uniform dimensions. This invention provides a positioning device for lathe spindles, which can greatly save the time of frequent measurements and ensure uniform dimensions.

[0004] To achieve the above objectives, this utility model provides a positioning device for a lathe spindle, including a lead screw with its right end inserted into the lathe spindle, a nut threaded onto the body of the lead screw, the left end of the lathe spindle located inside the nut, the nut and the lathe spindle being fixed by a first bolt, and the nut, the lathe spindle and the lead screw being fixed by a second bolt.

[0005] Preferably, the lead screw has an anti-rotation groove extending horizontally on its shaft, and the second bolt is inserted into the anti-rotation groove.

[0006] Preferably, the right end of the lead screw is provided with an annular component.

[0007] Preferably, one or more of the first bolts are provided.

[0008] Preferably, one or more anti-rotation grooves are provided for the second bolt.

[0009] The above technical solution involves inserting a lead screw into the lathe spindle from the left end, tightening the first bolt to fix the nut to the left end of the spindle, adjusting the length of the lead screw within the spindle according to the workpiece drawing dimensions, and tightening the second bolt to fix the lead screw, nut, and spindle. The workpiece is then placed in a locking chuck, with its left end extending into the spindle and abutting against the right end of the lead screw. The workpiece is clamped using the locking chuck, and the right end of the workpiece is machined using the lathe's large slide scale. The value of the large slide scale is recorded. The workpiece is then clamped in the opposite direction using the locking chuck, and the other end of the workpiece is machined to the required dimensions using the large slide scale. The value of the large slide scale is recorded again. All other workpieces are machined according to the large slide scale values. This significantly reduces the time spent on frequent measurements, ensures dimensional uniformity, improves production efficiency, guarantees workpiece quality, and facilitates the next milling process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a positioning device for a lathe spindle provided by this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of a positioning device for a lathe spindle and its connection to the lathe spindle provided by this utility model.

[0012] Explanation of reference numerals in the attached figures

[0013] 1. Lead screw; 2. Nut; 3. First bolt; 4. Second bolt; 5. Lathe spindle; 6. Anti-rotation groove; 7. Ring component. Detailed Implementation

[0014] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0015] See Figure 1 and Figure 2 As shown, this utility model provides a positioning device for a lathe spindle, including a lead screw 1 inserted into the lathe spindle 5 at its right end, a nut 2 threadedly connected to the body of the lead screw 1, and the left end of the lathe spindle 5 located inside the nut 2. The nut 2 and the lathe spindle 5 are fixed by a first bolt 3, and the nut 2, the lathe spindle 5, and the lead screw 1 are fixed by a second bolt 4. The lead screw 1 is made of seamless steel pipe, and the nut 2 is made of carbon steel, which has high strength and hardness.

[0016] In use, insert the lead screw 1 into the lathe spindle 5 from the left end of the lathe spindle 5, tighten the first bolt 3 to fix the nut 2 to the left end of the lathe spindle 5, and adjust the length of the lead screw 1 inside the lathe spindle 5 according to the workpiece drawing dimensions. Tighten the second bolt 4 to fix the lead screw 1, nut 2, and lathe spindle 5. Place the workpiece into the locking chuck, with the left end of the workpiece extending into the lathe spindle 5 and abutting against the right end face of the lead screw 1. Clamp the workpiece using the locking chuck, and use the lathe slide scale to position and machine the right end face of the workpiece. Record the value of the lathe slide scale positioning. Then, use the locking chuck to clamp the workpiece in the opposite direction, and use the lathe slide scale to position and machine the other end face of the workpiece to the required dimensions. Record the value of the lathe slide scale positioning. Machine the remaining workpieces according to the lathe slide positioning values. This greatly saves the time of frequent measurements, ensures dimensional uniformity, improves production efficiency and ensures workpiece quality, and provides convenience for the next milling process.

[0017] This device is mainly suitable for modified non-standard lathe spindles 5, whose enlarged bore diameter cannot be matched with standard Morse taper sleeves. With this device, there is no need to use standard Morse taper sleeves.

[0018] The lead screw 1 has an anti-rotation groove 6 extending horizontally on its body. The second bolt 4 is inserted into the anti-rotation groove 6 to prevent the lead screw 1 from rotating, thereby improving the stability of the lead screw 1. At the same time, the length of the lead screw 1 within the lathe spindle 5 can be adjusted by rotation at any position within the anti-rotation groove 6, making it suitable for turning workpieces of different sizes.

[0019] The lead screw 1 has an annular part 7 on its right end to prevent excessive clearance between the right end of the lead screw 1 and the inner wall of the lathe spindle 5, which would cause it to wobble.

[0020] One or more first bolts 3 are provided.

[0021] One or more second bolts 4 and their corresponding anti-rotation grooves 6 are provided.

[0022] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A positioning device for a lathe spindle, characterized in that The utility model relates to a lathe main shaft (5) is provided with the screw rod (1) of right end insertion, the screw rod (1) is provided with the nut (2) on the rod body, the left end of lathe main shaft (5) is located in the nut (2), the nut (2) and lathe main shaft (5) are fixed through the first bolt (3), the nut (2), lathe main shaft (5) and screw rod (1) are fixed through the second bolt (4).

2. The fixture for a lathe spindle according to claim 1, characterized in that The rod body of screw rod (1) is equipped with the anti -rotation groove (6) who sets up along the horizontal direction extension, the second bolt (4) inserts anti -rotation groove (6) in.

3. The lathe spindle locating device of claim 1 wherein, The right end of screw rod (1) is equipped with ring spare (7).

4. The lathe spindle locating device of claim 1 wherein, The first bolt (3) sets up one or more.

5. The lathe spindle locating device of claim 2 wherein, The second bolt (4) and its corresponding anti -rotation groove (6) set up one or more.

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