Horizontal lathe for semi-steel roller production

Abstract

This invention relates to the field of lathe technology and discloses a horizontal lathe for producing semi-steel rolls. The lathe includes a bed, a headstock fixedly mounted at one end of the bed, a chuck fixedly mounted at one end of the output shaft of the headstock, a tailstock slidably mounted on the bed, a center threaded inside the tailstock, and a slotted connector detachably mounted at one end of the center extending to the outside of the tailstock. The slotted connector includes a main mounting sleeve, an end cap fixedly mounted at one end of the main mounting sleeve, and a secondary mounting sleeve integrally formed at the other end of the main mounting sleeve. Multiple locking pins are circumferentially threaded through the secondary mounting sleeve along its outer wall. The slotted connector and the center are pre-positioned circumferentially using a positioning block and a positioning groove, allowing the locking pins to automatically align with the locking grooves. During assembly, rotating the adjusting ring causes its inner top rail to synchronously and radially push the bosses of each locking pin, allowing the locking pins to overcome spring force and insert into the locking grooves to complete a rigid connection.

Description

Technical Field

[0001] This invention relates to the field of lathe technology, and in particular to a horizontal lathe for producing semi-steel rolls. Background Technology

[0002] Semi-steel rolls are consumable spare parts in steel rolling production lines. After the outer circle of the roll body wears out during service, it needs to be repaired or precision machined by a horizontal lathe. In addition, the billet after the roll is cast also needs to be shaped by a lathe. During the roll turning operation, one end of the roll is clamped and driven by the chuck of the spindle box, and the other end relies on the tailstock center to push into the center hole of the roll end, forming a clamping and pushing configuration, which offsets the radial cutting force and ensures the rotational coaxiality.

[0003] Before starting the turning process, a center groove that meets the tolerance must be machined on the non-clamping end face of the roll to provide a reference for subsequent center positioning. In actual production, the machining of the center groove and the insertion of the center are mostly separate processes. After the spindle clamps the roll, the machine needs to be stopped to replace the center drill chuck. One end of the matching center drill is held against the end of the center for manual tool setting and grooving. After removing the chuck, the tailstock is rocked in to push the center in. This series of actions relies on repeated manual disassembly and assembly, and each auxiliary stop takes several minutes. At the same time, after some center drill joints are removed, the front end of the center lacks a positioning reference and needs to be re-aligned when it needs to be pushed in again, which further extends the auxiliary time. Summary of the Invention

[0004] The purpose of this invention is to provide a horizontal lathe for producing semi-steel rolls. A slotted connector is provided at one end of the center point. The slotted connector and the center point are pre-positioned circumferentially by a positioning block and a positioning groove, which facilitates the alignment of the locking pin with the locking groove. When the adjusting ring is rotated, multiple top rails push one end of the locking pin into the corresponding locking groove to complete the connection. Reversing the rotation will allow the spring to reset and unlock the machine. Tool-free disassembly and assembly are required. This enables the rapid opening of the center groove at one end of the roll with the help of the tailstock, and achieves axial positioning and support of the roll, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A horizontal lathe for producing semi-steel rolls includes a bed, a spindle box fixedly mounted at one end of the bed, a chuck fixedly mounted at one end of the output shaft of the spindle box, a tailstock slidably mounted on the bed, a center passing through the tailstock, one end of the center extending to the outside of the tailstock and detachably fixedly mounted with a slotted connector, the slotted connector including a main mounting sleeve, an end cap fixedly mounted at one end of the main mounting sleeve, a secondary mounting sleeve integrally formed at the other end of the main mounting sleeve, a plurality of locking pins passing through the circumferential direction of the outer wall of the secondary mounting sleeve, a collar fixedly mounted at the end of the main mounting sleeve near the secondary mounting sleeve, the collar sleeved on the outside of the secondary mounting sleeve, an adjusting ring rotatably mounted on the inner side of the collar, a plurality of top rails fixedly mounted on the circumferential direction of the adjusting ring, and an extended ring integrally formed at one end of the adjusting ring and fixedly mounted with a hand-held operating mechanism.

[0006] As a further preferred embodiment of the present invention, a tool post seat is slidably mounted on the bed located between the spindle box and the tailstock, and a tool post is fixedly mounted on the tool post seat.

[0007] As a further preferred embodiment of the present invention, the top tip is provided with a positioning groove along the outer side wall in an axial direction, thereby providing positioning for the installation of the slotted connector. The top tip is also provided with a locking groove along the outer side wall in a circumferential direction, which is consistent with the number of locking pins. This allows the slotted connector to be quickly assembled with the top tip by means of multiple locking pins after it is inserted into one end of the top tip through the positioning groove.

[0008] As a further preferred embodiment of the present invention, the main mounting sleeve has an annular first groove at one end near the secondary mounting sleeve.

[0009] As a further preferred embodiment of the present invention, a positioning block adapted to the positioning groove is fixedly installed on the inner side of the auxiliary mounting sleeve. The auxiliary mounting sleeve passes through one end of the top, and the positioning block passes through and slides in the positioning groove. With the positioning of the positioning groove and the positioning block, one end of multiple locking pins can be aligned with the corresponding locking groove. The auxiliary mounting sleeve has multiple countersunk holes circumferentially opened along the outer side wall. Multiple limiting long screws are threaded in the sleeve wall of the auxiliary mounting sleeve. One end of the limiting long screw extends into the corresponding countersunk hole. The countersunk hole is used to provide installation space and movement conditions for the locking pins, while the limiting long screw can limit the locking pin after it passes through the countersunk hole, preventing the locking pin from disengaging from the countersunk hole when assembling the adjusting ring.

[0010] As a further preferred embodiment of the present invention, one end of the locking pin has a frustum-shaped structure, which allows the locking pin to be inserted into the corresponding locking groove by means of the frustum-shaped structure at one end, playing a guiding and centering role. The frustum-shaped conical surface and the inner wall of the locking groove press against each other, which can compensate for gap errors when pushed in, so that one end of the locking pin fits and presses tightly with the locking groove, improving the assembly stability of the two. The other end of the locking pin is integrally formed with a boss. A limiting groove is formed on the outer wall of the locking pin. The locking pin passes through the corresponding countersunk hole. The limiting groove is slidably engaged with one end of the corresponding limiting long screw. A first compression spring is sleeved on the outer side of the locking pin. One end of the first compression spring abuts against the lower end of the boss, and the other end abuts against the bottom surface of the countersunk hole. When the top rail no longer applies radial pressure to the locking pin in the direction of the top, the rebound potential energy of the first compression spring can cause the locking pin to reset and move, so that one end of the locking pin can quickly disengage from the corresponding locking groove.

[0011] As a further preferred embodiment of the present invention, a second annular rotating groove is provided on one side of the collar, and an annular outer radial ring is fixedly installed on the collar along the outer contour. The outer radial ring is provided with toothed grooves along the outer side wall. The collar, together with the main mounting sleeve, provides a mounting and rotation basis for the adjusting ring. At the same time, the toothed grooves provided on its outer side provide a limiting basis for the handheld operating mechanism along the movement path.

[0012] As a further preferred embodiment of the present invention, both ends of the adjusting ring are integrally formed with rotating rings, wherein the rotating ring closer to the outer ring is located on the outer side of the outer ring, and one end of the rotating ring is rotatably installed in the first rotating groove, and the other rotating ring is rotatably installed in the second rotating groove. The height of the top rail gradually decreases from one end of the adjusting ring to the other end along the circumferential direction, and the inner sidewall of the top rail abuts against the corresponding boss. In this way, when the hand-held operating mechanism controls the adjusting ring to rotate along the inner side of the collar, multiple top rails are used to achieve synchronous pressure on multiple locking pins.

[0013] As a further preferred embodiment of the present invention, a mounting groove is provided on one side of the outer ring, and the handheld operating mechanism includes a mounting base. The mounting base is inserted and fixedly installed in the mounting groove. A U-shaped seat is fixedly installed on the upper end of the mounting base. A pressure block is inserted into the U-shaped seat, and one end of the pressure block extends laterally to the top of the mounting base. The lower end of the pressure block is integrally formed with multiple locking teeth that are adapted to the tooth groove. The locking teeth and the tooth groove mesh with each other. An operating handle is threadedly connected to the upper end of the pressure block. The upper end of the operating handle extends upward through the through hole at the top of the U-shaped seat and is threadedly connected to an end cap. A second compression spring is sleeved on the outside of the operating handle located inside the U-shaped seat. The upper end abuts against the inner top surface of the U-shaped seat, and the lower end of the second compression spring abuts against the pressure block. The locking teeth are provided with a one-way guide slope and a stop straight surface, thereby cooperating with the corresponding tooth groove to achieve one-way limiting. This ensures the stability of the locking pin when one end is inserted into the corresponding locking groove when the adjusting ring is rotated by the hand-held operating mechanism. A handle sleeve is provided on the outside of the operating handle located above the U-shaped seat. The hand-held handle sleeve can push and pull the operating handle without affecting the elastic lifting and lowering of the pressure block under the cooperation of the locking teeth and tooth groove. At the same time, the hand-held handle sleeve slides up and abuts against the lower end of the end cap. The pressure block can be actively lifted by the operating handle, so that the locking teeth and tooth groove are disengaged and the limiting of the mounting seat is released, realizing the reset rotation of the adjusting ring.

[0014] As a further preferred embodiment of the present invention, a stud is fixedly installed at the center of the end of the end cap opposite to the main mounting sleeve. A collet is threaded onto the stud, and a center drill is fixedly installed inside the collet. This allows the collet to be quickly assembled onto one end of the tip with the cooperation of the main mounting sleeve, end cap, secondary mounting sleeve, locking pin, and collar. This enables the tailstock and tip to quickly open the center groove at one end of the roll. Subsequently, the entire slotted connector can be quickly removed, allowing one end of the tip to be inserted into the center groove at one end of the roll.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, the slotted connector and the center point are pre-positioned circumferentially by a positioning block and a positioning groove, so that the locking pin is automatically aligned with the locking groove. During assembly, the adjusting ring is rotated, and its inner top rail synchronously and radially pushes the boss of each locking pin. The locking pin overcomes the spring force and inserts into the locking groove to complete the rigid connection. During disassembly, the adjusting ring is rotated in the opposite direction, and the first compression spring drives the locking pin to automatically reset and disengage. The entire disassembly and assembly process does not require auxiliary tools, which shortens the auxiliary downtime before and after the processing of the roll center groove and improves the continuous operation efficiency of the equipment.

[0016] 2. In this invention, the top rail on the inner side of the adjusting ring has a cam surface with decreasing height along the circumference. When rotating, it applies synchronous and balanced pressure to each locking pin, avoiding the problem of uneven load caused by single-point locking. The hand-held operating mechanism automatically locks the rotation angle of the adjusting ring in the locked state through the unidirectional meshing of the locking teeth and the outer radial ring tooth groove, preventing the locking force from being reduced due to vibration during processing. The front end of the locking pin is a frustum-shaped conical surface, which can automatically compensate for the assembly gap when inserted into the locking groove, ensuring the connection rigidity and radial runout accuracy under high-speed rotation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the slotted connector and top-mounted assembly structure of the present invention; Figure 3 This is a schematic diagram of the top partial structure of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the slotted connector of the present invention; Figure 5 This is a schematic diagram showing the disassembled structure of the collar, adjusting ring, and handheld operating mechanism of the present invention; Figure 6 This is a cross-sectional schematic diagram of the collar, adjusting ring, and hand-held operating mechanism of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the U-shaped seat and the pressure block of the present invention.

[0018] In the diagram: 1. Bed; 2. Spindle box; 3. Chuck; 4. Tool post holder; 5. Tool post; 6. Tailstock; 7. Center; 8. Slotted connector; 9. Main mounting sleeve; 10. End cover; 11. Secondary mounting sleeve; 12. Locking pin; 13. Collar; 14. Adjusting ring; 15. Top rail; 16. Outer ring; 17. Handheld operating mechanism; 18. Positioning slot; 19. Locking slot; 20. First rotating slot; 21. Positioning block; 22. 23. Countersunk hole; 24. Limiting screw; 25. Boss; 26. Limiting groove; 27. First compression spring; 28. Second rotating groove; 29. ​​Outer spoke ring; 30. Toothed groove; 31. Rotary ring; 32. Mounting groove; 33. Mounting seat; 34. U-shaped seat; 35. Pressure block; 36. Clamping tooth; 37. Operating handle; 38. End cap; 39. Handle sleeve; 40. Stud; 41. Chuck; 42. Center drill; 43. Second compression spring. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-7As shown, the present invention provides a horizontal lathe for semi-steel roll production, including a bed 1, a spindle box 2 fixedly installed at one end of the bed 1, a chuck 3 fixedly installed at one end of the output shaft of the spindle box 2, a tailstock 6 slidably installed on the bed 1, a center point 7 passing through the tailstock 6, one end of the center point 7 extending to one side to the outside of the tailstock 6 and detachably fixedly installed with a slotted connector 8, the slotted connector 8 including a main mounting sleeve 9, an end cap 10 fixedly installed at one end of the main mounting sleeve 9, a secondary mounting sleeve 11 integrally formed at the other end of the main mounting sleeve 9, a plurality of locking pins 12 passing through the outer wall of the secondary mounting sleeve 11, a collar 13 fixedly installed at the end of the main mounting sleeve 9 near the secondary mounting sleeve 11, and the collar 13 sleeved on the outside of the secondary mounting sleeve 11, an adjusting ring 14 rotatably installed on the inner side of the collar 13, a plurality of top rails 15 fixedly installed on the inner wall of the adjusting ring 14, an outer extension ring 16 integrally formed at one end of the adjusting ring 14 and a hand-held operating mechanism 17 fixedly installed thereon.

[0021] In this embodiment, a tool holder 4 is slidably mounted on the bed 1 located between the spindle box 2 and the tailstock 6, and a tool holder 5 is fixedly mounted on the tool holder 4. Before the semi-steel roll is turned for repair or finishing, a center groove that meets the tolerance requirements must be machined on the end face of the non-clamping end of the roll to provide a positioning reference for the center 7 in the subsequent clamping and top clamping. The bed 1, as the mounting base of the whole machine, provides high-precision guidance for the sliding of the tailstock 6 and the tool holder 4 along the length direction of the bed 1. The spindle box 2 is equipped with a chuck 3 at the end of its output shaft to clamp the roll and provide the main driving force for rotation. The tailstock 6 is mounted on the guide rail of the bed 1 and can be moved manually or motorized along the guide rail to adjust the distance between the center 7 and the chuck 3 to adapt to rolls of different lengths.

[0022] In this embodiment, after one end of the roll is suspended above the bed 1 by a hoisting device, the roll end is gradually inserted into the chuck 3 and clamped and fixed by the chuck 3. Then, when the operator performs the center groove machining, the slotted connector 8 is first axially fitted into the extended end of the tip 7. Since the tip 7 has a positioning groove 18 axially opened along the outer wall, during the fitting process, the tip 7 also has a locking groove 19 circumferentially opened along the outer wall, which is consistent with the number of locking pins 12. The main mounting sleeve 9 has an annular first rotating groove 20 at the end near the auxiliary mounting sleeve 11. The inner side of the auxiliary mounting sleeve 11 is fixedly installed with a positioning block 21 that matches the positioning groove 18. The auxiliary mounting sleeve 11 passes through one end of the tip 7, and the positioning block 21 passes through and slides in the positioning groove 18. The auxiliary mounting sleeve 11 has multiple countersunk holes 22 circumferentially opened along the outer wall. Multiple limiting long screws 23 are threadedly connected in the sleeve wall of the auxiliary mounting sleeve 11. One end of the long screw 23 extends into the corresponding countersunk hole 22. At this time, the positioning block 21 on the inner side of the auxiliary mounting sleeve 11 slides axially into the positioning groove 18 on the outer circle of the tip 7. The cooperation between the positioning block 21 and the positioning groove 18 constitutes circumferential coarse positioning, ensuring that the slotted connector 8 will not rotate relative to the tip 7. At the same time, the axis of each locking pin 12 is exactly aligned with each locking groove 19 on the outer circle of the tip 7. Thus, the operator can confirm whether it is in place by feel. After the positioning block 21 is fully inserted into the positioning groove 18, the slotted connector 8 cannot be further inserted axially. At this time, each locking pin 12 is exactly aligned with the opening of the locking groove 19. After the pre-positioning is completed, the operator holds the handle sleeve 38 with one hand, thereby pushing the operating handle 36 through the handle sleeve 38. Thus, the operating handle 36 drives the U-shaped seat 33, the mounting seat 32 and the outer ring 16 to rotate synchronously through the pressure block 34, thereby causing the outer ring 16 to drive the adjusting ring 14 to rotate in the collar 13.

[0023] In this embodiment, a first annular groove 20 is provided at one end of the main mounting sleeve 9 near the secondary mounting sleeve 11, and a second annular groove 27 is provided on one side of the inner ring 13. An annular outer radial ring 28 is fixedly installed on the outer contour of the ring 13. The outer radial ring 28 has a toothed groove 29 along its outer sidewall. Both ends of the adjusting ring 14 are integrally formed with rotating rings 30, wherein the rotating ring 30 near the outer extension ring 16 is located on the outer side of the outer extension ring 16, and one end of one rotating ring 30 is rotatably installed in the first groove 20, and the other rotating ring 30 is rotatably installed in the second groove 27. The height of the top rail 15 gradually decreases from one end of the adjusting ring 14 in the circumferential direction to the other end, and the inner sidewall of the top rail 15 abuts against the corresponding boss 24, while the mounting base 32 and the pressure block 34 are along the outer... The outer contour of the radial ring 28 slides circumferentially. A mounting groove 31 is provided on one side of the outer ring 16. The handheld operating mechanism 17 includes a mounting base 32, which is inserted and fixedly installed in the mounting groove 31. A U-shaped seat 33 is fixedly installed at the upper end of the mounting base 32. A pressure block 34 passes through the U-shaped seat 33, and one end of the pressure block 34 extends laterally above the mounting base 32. Multiple locking teeth 35, which are adapted to the toothed groove 29, are integrally formed at the lower end of the pressure block 34. The locking teeth 35 mesh with the toothed groove 29. An operating handle 36 is threaded to the upper end of the pressure block 34. The upper end of the operating handle 36 extends upward through a through hole at the top of the U-shaped seat 33 and is threaded to an end cap 37. A second compression spring 42 is sleeved on the outside of the operating handle 36 located inside the U-shaped seat 33. The upper end of the spring 42 abuts against the inner top surface of the U-shaped seat 33, and the lower end of the second compression spring 42 abuts against the pressure block 34. A handle sleeve 38 is fitted around the operating handle 36 located above the U-shaped seat 33. Thus, the locking tooth 35 at the lower end of the pressure block 34 disengages from the corresponding groove 29 on the outer side of the outer spoke ring 28, causing the locking tooth 35 to reach its highest position and then move into the next groove 29. The stop surface of the locking tooth 35 is limited by the stop surface of the current groove 29, achieving unidirectional limiting. The pressure block 34 reciprocates due to the meshing relationship between the locking tooth 35 and the groove 29, causing the pressure block 34 to drive the operating handle 36 to reciprocate within the handle sleeve 38 without affecting the hand's grip on the handle sleeve 38 and its pushing action on the operating handle 36. Due to the lock... One end of the locking pin 12 has a frustum-shaped structure, and the other end of the locking pin 12 has an integrally formed boss 24. A limiting groove 25 is formed on the outer wall of the locking pin 12. The locking pin 12 passes through the corresponding countersunk hole 22, and the limiting groove 25 is slidably engaged with one end of the corresponding limiting screw 23. A first compression spring 26 is sleeved on the outer side of the locking pin 12. One end of the first compression spring 26 abuts against the lower end of the boss 24, and the other end abuts against the inner bottom surface of the countersunk hole 22. Thus, during the rotation of the adjusting ring 14, the inner wall of the top rail 15 gradually presses the boss 24 on the locking pin 12, thereby forcing the locking pin 12 to overcome the pre-push force of the first compression spring 26 in the countersunk hole 22 towards the collar 13 and move radially towards the tip 7. The front end of the locking pin 12 is designed as a frustum-shaped conical surface.When the conical surface is inserted into the locking groove 19, the conical surface at one end of the locking pin 12 contacts the groove wall of the locking groove 19, generating a radial force. This automatically compensates for the assembly gap between the locking pin 12 and the locking groove 19, achieving self-centering and tight fit, ensuring connection rigidity. The limiting groove 25 on the rod of the locking pin 12 cooperates with the limiting screw 23 extending into the secondary mounting sleeve 11, ensuring that the locking pin 12 can only slide radially and will not axially fall out of the countersunk hole 22. When the adjusting ring 14 rotates to the highest point of the top rail 15, pressing against the boss 24, the locking pin 12 is fully inserted into the locking groove 19.

[0024] In this embodiment, after locking is completed, the lathe is started, the spindle box 2 drives the chuck 3 to rotate the roll, and the tailstock 6 feeds along the guide rail toward the end face of the roll. A stud 39 is fixedly installed at the center of the end of the end cap 10 opposite to the center of the main mounting sleeve 9. A collet 40 is threaded onto the stud 39, and a center drill 41 is fixedly installed in the collet 40, so that one end of the center drill 41 abuts against the center position of one end of the roll. The rotation of the roll is used to open the center groove, thereby drilling a center groove that meets the requirements on the end face of the roll. After the center groove of the roll is processed, the tailstock 6 quickly retracts, so that the center drill 41 is disengaged from the end face of one end of the roll. At this time, the operator's hand grasps the handle sleeve 38 again and lifts the handle sleeve 38. Then, the upper end of the handle sleeve 38 abuts against the lower end of the end cap 37 and the operating handle 3 is moved. When the lever 36 is lifted, the operating handle 36 simultaneously lifts the pressure block 34 and the retaining tooth 35, causing the pressure block 34 to move upward within the U-shaped seat 33 and compressing the second compression spring 42. As a result, the retaining tooth 35 disengages from the corresponding tooth groove 29. When the operating handle 36 is rotated in the opposite direction, the adjusting ring 14 reverses accordingly. The part of the top rail 15 that abuts against the corresponding boss 24 gradually slides from high to low, and the first compression spring 26 releases its rebound potential energy, thereby pushing the locking pin 12 to reset towards the collar 13. The frustum conical surface at one end of the locking pin 12 disengages from the locking groove 19, and the slotted connector 8 can be easily removed from the top tip 7. At this time, the extended end of the top tip 7 is unobstructed and can be directly pushed into the machined center groove. The roller completes the clamping and positioning with one clamp and one push, and the outer diameter turning can begin immediately.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal lathe for producing semi-steel rolls, characterized in that: Includes a bed (1), a spindle box (2) is fixedly installed at one end of the bed (1), a chuck (3) is fixedly installed at one end of the output shaft of the spindle box (2), a tailstock (6) is slidably installed on the bed (1), a center point (7) is provided inside the tailstock (6), and one end of the center point (7) extends to one side to the outside of the tailstock (6) and is detachably fixedly installed with a slotted connector (8); The slotted connector (8) includes a main mounting sleeve (9), one end of which is fixedly mounted with an end cap (10), and the other end of which is integrally formed with a secondary mounting sleeve (11). The secondary mounting sleeve (11) is provided with multiple locking pins (12) circumferentially along its outer wall. The main mounting sleeve (9) is fixedly mounted with a collar (13) near the secondary mounting sleeve (11), and the collar (13) is sleeved on the outside of the secondary mounting sleeve (11). An adjusting ring (14) is rotatably mounted on the inner side of the collar (13). The adjusting ring (14) is fixedly mounted with multiple top rails (15) circumferentially along its inner wall. One end of the adjusting ring (14) is integrally formed with an extension ring (16) and is fixedly mounted with a hand-held operating mechanism (17).

2. The horizontal lathe for producing semi-steel rolls according to claim 1, characterized in that: A tool post seat (4) is slidably mounted on the bed (1) located between the spindle box (2) and the tailstock (6), and a tool post (5) is fixedly mounted on the tool post seat (4).

3. The horizontal lathe for producing semi-steel rolls according to claim 1, characterized in that: The top (7) has a positioning groove (18) along the outer wall in the axial direction, and the top (7) also has a locking groove (19) along the outer wall in the circumferential direction, which is consistent with the number of locking pins (12).

4. The horizontal lathe for producing semi-steel rolls according to claim 3, characterized in that: The main mounting sleeve (9) has an annular first rotating groove (20) at one end near the secondary mounting sleeve (11).

5. The horizontal lathe for producing semi-steel rolls according to claim 4, characterized in that: The inner side of the auxiliary mounting sleeve (11) is fixedly installed with a positioning block (21) that is compatible with the positioning groove (18). The auxiliary mounting sleeve (11) passes through one end of the tip (7), and the positioning block (21) passes through and slides in the positioning groove (18). The auxiliary mounting sleeve (11) has multiple countersunk holes (22) circumferentially opened along the outer wall. Multiple limiting long screws (23) are threaded in the sleeve wall of the auxiliary mounting sleeve (11), and one end of the limiting long screw (23) extends into the corresponding countersunk hole (22).

6. The horizontal lathe for producing semi-steel rolls according to claim 5, characterized in that: One end of the locking pin (12) is frustum-shaped, and the other end of the locking pin (12) is integrally formed with a boss (24). A limiting groove (25) is provided on the outer side wall of the locking pin (12). The locking pin (12) passes through the corresponding countersunk hole (22). The limiting groove (25) is slidably fitted to one end of the corresponding limiting long screw (23). A first compression spring (26) is sleeved on the outer side of the locking pin (12). One end of the first compression spring (26) abuts against the lower end of the boss (24), and the other end abuts against the bottom surface of the countersunk hole (22).

7. A horizontal lathe for producing semi-steel rolls according to claim 6, characterized in that: A second annular groove (27) is provided on one side of the collar (13), and an annular outer radial ring (28) is fixedly installed on the collar (13) along the outer contour. The outer radial ring (28) is provided with toothed grooves (29) along the outer wall.

8. A horizontal lathe for producing semi-steel rolls according to claim 7, characterized in that: Both ends of the adjusting ring (14) are integrally formed with rotating rings (30), wherein the rotating ring (30) closer to the outer ring (16) is located on the outer side of the outer ring (16), and one end of the rotating ring (30) is rotatably installed in the first rotating groove (20), and the other rotating ring (30) is rotatably installed in the second rotating groove (27). The height of the top rail (15) gradually decreases from one end of the adjusting ring (14) to the other end along the circumferential direction, and the inner sidewall of the top rail (15) abuts against the corresponding boss (24).

9. A horizontal lathe for producing semi-steel rolls according to claim 8, characterized in that: The outer ring (16) has a mounting groove (31) on one side. The handheld operating mechanism (17) includes a mounting base (32). The mounting base (32) is inserted and fixedly installed in the mounting groove (31). A U-shaped seat (33) is fixedly installed on the upper end of the mounting base (32). A pressure block (34) is inserted in the U-shaped seat (33). One end of the pressure block (34) extends laterally to the top of the mounting base (32). The lower end of the pressure block (34) is integrally formed with multiple locking teeth (35) that are adapted to the tooth groove (29). The locking teeth (35) are aligned with the tooth groove (29). The upper end of the pressure block (34) is threaded with an operating handle (36). The upper end of the operating handle (36) extends upward through the through hole at the top of the U-shaped seat (33) and is threaded with an end cap (37). A second compression spring (42) is sleeved on the outside of the operating handle (36) located inside the U-shaped seat (33). The upper end of the second compression spring (42) abuts against the inner top surface of the U-shaped seat (33), and the lower end of the second compression spring (42) abuts against the pressure block (34). A handle sleeve (38) is sleeved on the outside of the operating handle (36) located above the U-shaped seat (33).

10. A horizontal lathe for producing semi-steel rolls according to claim 1, characterized in that: A stud (39) is fixedly installed at the center of the end of the end cap (10) opposite to the main mounting sleeve (9). A collet (40) is threaded onto the stud (39), and a center drill (41) is fixedly installed inside the collet (40).

Images