Heavy lathe tailstock retainer structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NEWAY CNC EQUIPMENT (SUZHOU) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-10
Smart Images
Figure CN224475613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CNC lathe technology, and in particular to a tailstock anti-reverse structure for a heavy-duty lathe. Background Technology
[0002] The tailstock is one of the most important components of a machine tool, playing a crucial role. It is mounted on the bed guide rail of the machine tool and serves as a positioning and support during the machining process. It supports one end of a longer workpiece, and together with the spindle, it restricts the machining of the parts and centers the workpiece.
[0003] The existing tailstock anti-reverse structure locks the tailstock by straight up and down or by toothed engagement. When these methods are implemented, problems such as large meshing gaps, insufficient meshing, and misaligned teeth may occur, which will affect the tailstock's ability to hold the workpiece tightly and cause safety issues. Iron chips that fly out during the workpiece turning process will enter the anti-reverse structure, reducing the stability of the retraction structure. Summary of the Invention
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a tailstock anti-reverse structure for heavy-duty lathes, the technical solution of which is as follows:
[0005] A tailstock anti-reverse structure for a heavy-duty lathe includes a tailstock, a bed, a drive unit, and a locking unit. The tailstock is slidably mounted on the bed. The drive unit includes a rotating shaft and a cam. The locking assembly includes a push rod, a mating rod, and a locking member. The bed is provided with a locking groove. The rotating shaft is rotatably mounted on the tailstock. The cam is fixed on the rotating shaft. The push rod is mounted on the tailstock. The locking member is fixed to the bottom of the push rod. The mating rod is fixedly connected to the push rod. The cam abuts against the mating rod. The locking member engages with the locking groove.
[0006] Furthermore, the locking part also includes an adjusting spring, one end of which is fixed to the tailstock, and the other end of which is fixedly connected to the side wall of the push rod.
[0007] Furthermore, the adjusting spring is inclined to the rotating shaft, and the extension line of the adjusting spring does not coincide with the center of the push rod.
[0008] Furthermore, the mating rod is fixed to the side wall of the push rod, and the extension direction of the mating rod intersects the axis of the push rod.
[0009] Furthermore, the drive unit also includes a limiting pin, which is fixed to the side of the cam away from the wheel center. The limiting pin abuts against the mating rod and limits the stroke of the mating rod to prevent the mating rod from slipping off the cam.
[0010] Furthermore, the drive unit also includes a locking handle, with one end of the rotating shaft extending out of the tailstock and being connected to the locking handle in a transmission manner.
[0011] Furthermore, the locking part also includes a retaining ring, which is fixed to the tailstock, and the push rod is disposed inside the retaining ring.
[0012] Furthermore, there are multiple locking grooves, and the locking grooves are arranged at an angle.
[0013] Furthermore, the locking groove has an inclination angle of 45°.
[0014] Furthermore, the locking member extends outward to form an angled insertion into the locking groove, and the mating surface of the locking member and the locking groove is 45°.
[0015] The advantage of this invention is that the push rod rotates through the cooperation of the cam and the mating rod, and the locking part and the locking groove are matched and locked, which improves the tightness of the locking part and the locking groove, facilitates adjustment, and enhances the stability of the anti-reverse structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the tailstock anti-reverse mechanism of the heavy-duty lathe of this utility model;
[0017] Figure 2 This is another schematic diagram of the anti-reverse structure of the tailstock of the heavy-duty lathe of this utility model;
[0018] Figure 3 for Figure 2 Another schematic diagram of the tailstock anti-reverse structure of a heavy-duty lathe.
[0019] In the diagram: 1. Tailstock; 2. Drive unit; 21. Rotary shaft; 22. Cam; 221. Limit pin; 23. Locking handle; 3. Locking part; 31. Push rod; 311. Matching rod; 32. Locking component; 33. Fixing ring; 34. Adjusting spring; 4. Bed; 41. Locking groove. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / as well" as used herein includes any and all combinations of one or more of the associated listed items.
[0022] The following describes the embodiments in conjunction with the appendix. Figure 1-3 This utility model will be described in further detail.
[0023] A tailstock anti-reverse structure for a heavy-duty lathe includes a tailstock 1, a drive unit 2, a locking unit 3, and a bed 4.
[0024] The drive unit 2 includes a rotating shaft 21, a cam 22, a locking handle 23, and an adjusting spring 34. The cam 22 is fixed on the rotating shaft 21, and the locking handle 23 is connected to one end of the rotating shaft 21. Rotating the locking handle 23 at a certain angle can lock the rotating shaft 21. Specifically, in this embodiment, the cam 22 is provided with a limiting pin 221, which is fixed on the side of the cam 22 away from the wheel center. The limiting pin 221 is used to limit the rotation stroke of the push rod 31.
[0025] The locking part 3 includes a push rod 31, a locking member 32, a fixing ring 33, and an adjusting spring 34. The push rod 31 is sleeved inside the fixing ring 33, and the locking member 32 is fixed below the push rod 31. The push rod 31 is provided with a mating rod 311, which is fixed to the upper part of the push rod 31. Specifically, in this embodiment, the locking member 32 extends outward to form an angle that can be inserted into the locking groove 41; the extension direction of the mating rod 311 intersects the axis of the push rod 31.
[0026] The bed 4 is provided with a locking groove 41. Specifically, in this embodiment, the locking groove 41 is inclined, and there are multiple locking grooves 41. The inclination angle of the locking groove 41 is 45°.
[0027] The structural relationship of a tailstock anti-reverse structure for a heavy-duty lathe:
[0028] The tailstock 1 is slidably mounted on the bed 4. The rotating shaft 21 of the drive unit 2 is rotatably mounted on the tailstock 1. The fixing ring 33 of the locking part 3 is fixed to the tailstock 1. The push rod 31 is located inside the fixing ring 33. The cam 22 abuts against the mating rod 311. One end of the adjusting spring 34 is fixed to the tailstock 1, and the other end is fixedly connected to the side wall of the push rod 31. The adjusting spring 34 is inclined relative to the push rod 31. The extension direction of the adjusting spring 34 does not coincide with the center of the push rod 31. The adjusting spring 34 and the cam 22 work together to rotate and adjust the push rod 31, causing the locking part 32 at the lower end of the push rod 31 to rotate and insert into the locking groove 41. The locking part 32 is inserted into the locking groove 41 at an inclined fit. The fitting surface of the locking part 32 inserted into the locking groove 41 is 45°, which effectively prevents iron filings from splashing into the locking groove 41.
[0029] The working principle of a heavy-duty lathe tailstock anti-reverse structure:
[0030] Rotating the locking handle 23 causes the cam 22 to rotate with the rotating shaft 21. The cam 22 abuts against the mating rod 311, causing the push rod 31 to rotate, which in turn drives the locking member 32 to rotate until it is inserted into the locking groove 41. At this time, the locking handle 23 locks the rotating shaft 21, enhancing the locking effect of the anti-reverse structure. The rotation matching method greatly improves the degree of engagement between the locking member 32 and the locking groove 41, reducing the probability of misalignment. When the push rod 31 rotates excessively and the locking member 32 cannot be inserted into the locking groove 41, the locking handle 23 is released, allowing the deformed adjusting spring 34 to restore the push rod 31. The limit pin 221 abuts against the mating rod 311 of the cam 22, thereby limiting the rotation stroke of the mating rod 311 and preventing the mating rod 311 from slipping out of the cam 22.
[0031] The advantages of this utility model are:
[0032] The cam 22 and the mating rod 311 work together to rotate the push rod 31, which in turn pairs and locks the locking part 32 and the locking groove 41, improving the tightness of the locking part 32 and the locking groove 41, making it easier to adjust and enhancing the stability of the anti-reverse structure.
[0033] The above embodiments only illustrate one implementation of the present utility model, and should not be construed as limiting the scope of the utility model patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of the present utility model, and all of these fall within the protection scope of the present utility model.
Claims
1. A tailstock anti-reverse structure for a heavy-duty lathe, comprising a tailstock and a bed, characterized in that: It also includes a drive unit and a locking unit. The tailstock is slidably mounted on the bed. The drive unit includes a rotating shaft and a cam. The locking assembly includes a push rod, a mating rod, and a locking member. The bed is provided with a locking groove. The rotating shaft is rotatably mounted on the tailstock. The cam is fixed on the rotating shaft. The push rod is mounted on the tailstock. The locking member is fixed to the bottom of the push rod. The mating rod is fixedly connected to the push rod. The cam abuts against the mating rod. The locking member engages with the locking groove.
2. The anti-reverse structure of the heavy-duty lathe tailstock according to claim 1, characterized in that: The locking part also includes an adjusting spring, one end of which is fixed to the tailstock, and the other end of which is fixedly connected to the side wall of the push rod.
3. The anti-reverse structure of the heavy-duty lathe tailstock according to claim 2, characterized in that: The adjusting spring is inclined to the rotating shaft, and the extension line of the adjusting spring does not coincide with the center of the push rod.
4. The anti-reverse structure of the tailstock of a heavy-duty lathe according to claim 1, characterized in that: The mating rod is fixed to the side wall of the push rod, and the extension direction of the mating rod intersects the axis of the push rod.
5. The anti-reverse structure of the heavy-duty lathe tailstock according to claim 1, characterized in that: The drive unit also includes a limiting pin, which is fixed to the side of the cam away from the wheel center. The limiting pin abuts against the mating rod and limits the stroke of the mating rod to prevent the mating rod from slipping off the cam.
6. The anti-reverse structure of the heavy-duty lathe tailstock according to claim 1, characterized in that: The drive unit also includes a locking handle, and one end of the rotating shaft extends out of the tailstock and is connected to the locking handle in a transmission manner.
7. The anti-reverse structure of the tailstock of a heavy-duty lathe according to claim 1, characterized in that: The locking part also includes a fixing ring, which is fixed to the tailstock, and the push rod is disposed inside the fixing ring.
8. The anti-reverse structure of the tailstock of a heavy-duty lathe according to claim 1, characterized in that: The number of locking grooves is multiple, and the locking grooves are arranged at an angle.
9. The anti-reverse structure of the tailstock of a heavy-duty lathe according to claim 8, characterized in that: The locking groove has an inclination angle of 45°.
10. The anti-reverse structure of the tailstock of a heavy-duty lathe according to claim 9, characterized in that: The locking member extends outward to form an angled insertion into the locking groove, and the mating surface of the locking member and the locking groove is 45°.