General lathe tooth pulling frame

Abstract

This utility model relates to the field of lathe equipment technology and discloses a common lathe die holder, including a housing. A ring is provided in the inner cavity of the housing. A rotating shaft is movably sleeved at the front of the inner cavity of the housing. The rotating shaft is located to the right of the ring. A helical gear is fixedly installed at the rear end of the rotating shaft and in the inner cavity of the housing. A knob is fixedly installed at the front end of the rotating shaft and in front of the housing. A moving rod is movably sleeved on the side of the housing. A sliding groove is evenly and equidistantly opened on the right side of the moving rod. An arc-shaped clamp is fixedly installed at one end of the moving rod in the inner cavity of the housing. By rotating the knob and using the transmission mechanism, the arc-shaped clamp can easily fix dies of different sizes, enhancing the applicability of the device. The simultaneous movement of four sets of clamps toward the dies helps to reduce the coaxiality error between the die axis and the lathe spindle, avoids the need to rotate multiple bolts back and forth to adjust the dies, and improves the working efficiency of the lathe.

Description

Technical Field

[0001] This utility model relates to the field of lathe equipment technology, and in particular to a common lathe tooth wrench holder. Background Technology

[0002] A lathe is a machine tool that primarily uses a cutting tool to machine rotating workpieces. It is the most important type of metal cutting machine tool and is the most numerous type found in general machine manufacturing plants. Lathes can also be used to perform corresponding machining operations using drills, reamers, taps, dies, and knurling tools. The function of a lathe is to cut rotating surfaces of various sizes and shapes, as well as helical surfaces. When machining external threads, a die holder is used in conjunction with the lathe tailstock to achieve efficient and precise thread machining.

[0003] In the prior art, when fixing the die to the die holder, it is necessary to change the die holder with different hole diameters according to the different sizes of dies, which increases the time consumption and affects the lathe operation efficiency. The traditional die holder uses multiple bolts to squeeze and fix the die. After fixing, it cannot be ensured that the extension distance between each bolt is the same, and the die is not easy to be located in the center of the die holder cavity. This results in a large coaxiality error between the die axis and the lathe spindle. Therefore, in order to solve the above problems, this utility model proposes a common lathe die holder. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a common lathe die holder. By rotating a knob and utilizing a transmission mechanism, it is convenient to fix dies of different sizes using arc-shaped clamps, enhancing the applicability of the device. The simultaneous movement of four clamps toward the die helps reduce the coaxiality error between the die axis and the lathe spindle, avoids the need to rotate multiple bolts back and forth to adjust the die, and improves the working efficiency of the lathe.

[0005] This utility model provides the following technical solution: a common lathe die holder, comprising a housing, an inner cavity of which is provided with a ring, a rotating shaft movably sleeved at the front of the inner cavity of the housing, the rotating shaft being located to the right of the ring, a helical gear fixedly installed at the rear end of the rotating shaft and within the inner cavity of the housing, a knob fixedly installed at the front end of the rotating shaft and in front of the housing, four movable rods evenly movably sleeved on the side of the housing, the movable rods being located to the left of the ring, a sliding groove evenly spaced on the right side of each movable rod, and an arc-shaped clamping plate fixedly installed at one end of the movable rod within the inner cavity of the housing. By rotating the knob and utilizing the transmission mechanism, the arc-shaped clamping plate can easily fix dies of different sizes, enhancing the applicability of the device, avoiding the time wasted on frequent die holder replacements, and improving the working efficiency of the device.

[0006] Preferably, the ring includes a rotating ring, which is movably connected to an inner cavity of the housing. A helical gear ring is fixedly installed on the right side of the rotating ring, and the helical gear ring meshes with a helical gear. A spiral rib is fixedly installed on the left side of the rotating ring, and the spiral rib engages with a sliding groove. By utilizing the meshing of the helical gear and the helical gear ring, and the engagement of the spiral rib with the sliding groove, the four sets of clamping plates move towards the die simultaneously and clamp, which helps to reduce the coaxiality error between the die axis and the lathe spindle.

[0007] Preferably, a second housing is fixedly installed on the right side of the first housing. The inner cavity of the second housing is fixedly connected to the inner cavity of the first housing. The inner cavity of the second housing is provided with two sliding grooves at the front and rear. The sliding grooves assist in the automatic retraction of the device, avoiding the rigid friction between the wrench and the workpiece when manually retracting the tool, thus reducing the breakage rate of the wrench and preventing scratches on the thread surface, ensuring the yield rate of the thread after turning.

[0008] Preferably, a fixed rod is movably sleeved in the inner cavity of the housing two, and connecting blocks are symmetrically fixedly installed on the front and rear parts of the fixed rod. The connecting blocks are movably connected to the slide groove two, fixing the fixed rod on the lathe moving tailstock, which facilitates the lathe moving tailstock to drive the die holder to move flexibly, maintains the stability of the die holder during the turning process, enables the workpiece to be turned quickly, and ensures the accuracy of the turned threads.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. By rotating the knob and utilizing the meshing of the helical gear and the helical ring, as well as the engagement of the spiral rib and the first groove, the moving rod drives the arc-shaped clamping plate to clamp and fix the die. This facilitates the fixing of dies of different sizes, avoids the time-consuming process of frequently changing the die holder, enhances the applicability of the device, and improves work efficiency. The four sets of clamping plates move towards the die simultaneously to clamp it, ensuring that the extension and retraction distances of the four moving rods are the same, and ensuring that the die is in the center position of the inner cavity of the housing. This helps to reduce the coaxiality error between the die axis and the lathe spindle, avoids the need to rotate multiple bolts back and forth to adjust the die, and makes the fixing of the die convenient and quick.

[0011] 2. After turning, the tailstock of the lathe moves to the right. Since the die is engaged with the spindle thread, the die itself does not move, and neither does housing one. During the movement of the tailstock, the fixing rod drives the connecting block to the right end of slide groove two. At this time, the lathe fixture drives the spindle to rotate in the opposite direction. By utilizing the engagement between the spindle thread and the die, the die is driven to exit the spindle surface, causing housing one to move to the right. Housing one drives housing two to move, causing the connecting block to return to the left end of slide groove two, realizing the automatic retraction of the device. This avoids the rigid friction between the die and the workpiece during traditional manual retraction, reducing the die breakage rate and preventing thread surface scratches, thus ensuring the yield rate after thread turning. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the present invention.

[0014] Figure 3 This is a schematic diagram of the transmission structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the fixing structure of this utility model.

[0016] In the diagram: 1. Shell 1; 2. Ring; 21. Rotating ring; 22. Helical gear ring; 23. Scroll rib; 3. Rotating shaft; 4. Helical gear; 5. Knob; 6. Moving rod; 7. Slide groove 1; 8. Arc-shaped clamp; 9. Shell 2; 10. Slide groove 2; 11. Fixed rod; 12. Connecting block. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4A common lathe toother holder includes a housing 1. A ring 2 is disposed within the inner cavity of the housing 1. A rotating shaft 3 is movably sleeved at the front of the inner cavity of the housing 1, located to the right of the ring 2. A helical gear 4 is fixedly installed at the rear end of the rotating shaft 3 within the inner cavity of the housing 1. A knob 5 is fixedly installed at the front end of the rotating shaft 3, located in front of the housing 1. Four movable rods 6 are evenly and movably sleeved on the side of the housing 1, located to the left of the ring 2. Slide grooves 7 are evenly and equidistantly formed on the right side of the movable rods 6. An arc-shaped clamping plate 8 is fixedly installed at one end of the movable rod 6 within the inner cavity of the housing 1. The ring 2 includes a rotating ring 21, which is movably connected to the inner cavity of the housing 1. A helical gear ring 22 is fixedly installed on the right side of the rotating ring 21, meshing with the helical gear 4. A spiral rib 23 is fixedly installed on the left side of the rotating ring 21, and the spiral rib 23 meshes with the slide groove. When the 7-way groove is engaged, the die is placed in the inner cavity of the housing 1. Rotating the knob 5 drives the rotating shaft 3 to rotate. Utilizing the meshing between the helical gear 4 and the helical gear ring 22, the rotating shaft 3 drives the rotating ring 21 to rotate in the inner cavity of the housing 1. During the rotation of the rotating ring 21, the scroll rib 23 is driven. Since the scroll rib 23 engages with the slide groove 7, the scroll rib 23 drives the moving rod 6 to extend and retract. The four moving rods 6 move simultaneously and drive the arc-shaped clamping plate 8 to clamp and fix the die. This facilitates the fixing of dies of different sizes, avoids the time wasted by frequently changing the die holder, enhances the applicability of the device, and improves work efficiency. It also helps to reduce the coaxiality error between the die axis and the lathe spindle, avoids the need to rotate multiple bolts back and forth to adjust the die, and makes the fixing of the die convenient and quick. The arc-shaped clamping plate 8 is made of cast iron and has a rough surface, which can provide good support during die turning.

[0019] A second housing 9 is fixedly installed on the right side of housing 1. The inner cavity of housing 9 is fixedly connected to the inner cavity of housing 1. Slide grooves 2 10 are respectively provided in the front and rear parts of the inner cavity of housing 9. A fixed rod 11 is movably sleeved in the inner cavity of housing 9. Connecting blocks 12 are symmetrically fixedly installed in the front and rear parts of the fixed rod 11. The connecting blocks 12 are movably connected to the slide grooves 2 10. The fixed rod 11 is fixed on the lathe's moving tailstock. After the die is fixed, the lathe fixture drives the shaft to be threaded to rotate. The lathe moving tailstock drives the die holder to move to the side of the lathe fixture, so that the die cuts the rotating shaft. With the slow movement of the lathe tailstock, the thread is gradually cut out. At this time, the connecting block 12 is located at the left end of the slide groove 2 10. After machining, the lathe fixture stops rotating, and the lathe tailstock moves to the right. Since the die is engaged with the spindle thread, the die itself does not move, and similarly, housing 1 does not move. During the movement of the lathe tailstock, the fixing rod 11 drives the connecting block 12 to the right end of the slide groove 10. At this time, the lathe fixture drives the spindle to rotate in the opposite direction. By utilizing the engagement between the spindle thread and the die, the die is driven to exit the spindle surface, causing housing 1 to move to the right. Housing 1 drives housing 9 to move, causing the connecting block 12 to return to the left end of the slide groove 10, realizing the automatic retraction of the device. This avoids the rigid friction between the die and the workpiece during traditional manual retraction, reducing the die breakage rate and preventing thread surface scratches, thus ensuring the yield rate after thread turning.

[0020] Working principle: The fixed rod 11 is fixed on the lathe's moving tailstock, and the die is placed in the inner cavity of the housing 1. Rotating the knob 5 drives the rotating shaft 3 to rotate. Utilizing the meshing between the helical gear 4 and the helical gear ring 22, the rotating shaft 3 drives the rotating ring 21 to rotate within the inner cavity of the housing 1. During the rotation of the rotating ring 21, it drives the spiral rib 23. Since the spiral rib 23 engages with the slide groove 7, it causes the spiral rib 23 to drive the moving rod 6 to extend and retract. The four moving rods 6 move simultaneously and drive the arc-shaped clamping plate 8 to clamp and fix the die. The arc-shaped clamping plate 8 is made of cast iron with a rough surface, which can provide good support during die turning. After the die is fixed, the lathe fixture drives the shaft that needs to be threaded to rotate, and the lathe's moving tailstock drives the die holder to move. The die moves to the lathe fixture, causing it to cut the rotating shaft. As the lathe tailstock moves slowly, the thread is gradually cut out. At this time, the connecting block 12 is located at the left end of the slide groove 10. After the cutting is completed, the lathe fixture stops rotating, and the lathe tailstock moves to the right. Since the die is engaged with the shaft thread, the die itself does not move, and the housing 1 does not move either. During the movement of the lathe tailstock, the fixing rod 11 drives the connecting block 12 to the right end of the slide groove 10. At this time, the lathe fixture drives the shaft to rotate in the opposite direction. By using the engagement between the shaft thread and the die, the die is driven to exit the shaft surface, causing the housing 1 to move to the right. The housing 1 drives the housing 9 to move, so that the connecting block 12 returns to the left end of the slide groove 10, realizing the automatic retraction of the device.

Claims

1. A general lathe tool post comprising a housing (1), characterized in that: A ring (2) is provided in the inner cavity of the housing (1). A rotating shaft (3) is movably sleeved at the front of the inner cavity of the housing (1). The rotating shaft (3) is located to the right of the ring (2). A helical gear (4) is fixedly installed at the rear end of the rotating shaft (3) and in the inner cavity of the housing (1). A knob (5) is fixedly installed at the front end of the rotating shaft (3) and in front of the housing (1). Moving rods (6) are evenly movably sleeved on the side of the housing (1). There are four moving rods (6) located to the left of the ring (2). Sliding grooves (7) are evenly spaced on the right side of the moving rods (6). An arc-shaped clamp (8) is fixedly installed at one end of the moving rod (6) in the inner cavity of the housing (1).

2. A general lathe tool post according to claim 1, characterized in that: The ring (2) includes a rotating ring (21), which is movably connected to the inner cavity of the housing (1). A helical tooth ring (22) is fixedly installed on the right side of the rotating ring (21), which meshes with a helical gear (4). A spiral rib (23) is fixedly installed on the left side of the rotating ring (21), which fits into the sliding groove (7).

3. A general lathe tool post according to claim 1, characterized in that: A second shell (9) is fixedly installed on the right side of the first shell (1). The inner cavity of the second shell (9) is fixedly connected to the inner cavity of the first shell (1). The front and rear parts of the inner cavity of the second shell (9) are respectively provided with sliding grooves (10).

4. A general lathe tool post according to claim 3, characterized in that: A fixing rod (11) is movably sleeved in the inner cavity of the second housing (9). Connecting blocks (12) are symmetrically fixed on the front and rear parts of the fixing rod (11). The connecting blocks (12) are movably connected to the second slide groove (10).

Images