CN218050131U - External thread tooth type rolling device - Google Patents

Abstract

The utility model discloses an external screw thread tooth form rolling press device, including rolling wheel, dabber subassembly, cutter arbor and locate the elastic component in the cutter arbor, rolling wheel installs on the dabber subassembly, and the dabber subassembly is mobilizable to be installed on the cutter arbor, is equipped with the regulating part that is used for adjusting the elasticity of elastic component on the cutter arbor, and the elastic component is located between dabber subassembly and the regulating part. When the workpiece rotates, the rolling wheel is driven to rotate along with the workpiece, the thread profile of the workpiece is rolled along with the feeding motion of the middle supporting plate, and the workpiece is in single-tooth line contact with the rolling wheel, so that the internal stress on the workpiece is small, the deformation of the workpiece is small, and the achievable precision is high; the workpiece can be fed and rolled for multiple times through a numerically controlled lathe, and the surface roughness of the workpiece thread can be high; because the rolling wheel works discontinuously at the circumference, the heat dissipation condition is good, the oil injection cooling of the rolling wheel is not needed during the rolling processing, and the processing environment is improved; for the workpiece with the inner hole, the thread can be reinforced by rolling, and the application range is wide.

Description

External thread tooth type rolling device

Technical Field

The utility model relates to a machining equipment especially relates to an external screw thread profile of tooth rolling press device.

Background

For parts of aeromechanics, higher reliability and fatigue strength are required of the parts. The thread parts in these parts usually perform the connecting and fixing functions, so the technical requirements of the parts drawing clearly require that the thread parts are subjected to rolling processing to obtain higher fatigue strength during processing and manufacturing.

At present, the thread rolling machine is generally used for machining, specifically, an oil pump is used for generating oil pressure to extrude two thread rolling wheels, the equipment is heavy, the precision is low, various types of paired thread rolling wheels need to be prepared and cannot be interchanged, a large amount of preparation time is needed for replacing the thread rolling wheels each time, the machining and debugging are too complex, a plurality of groups of test pieces need to be manufactured for trial machining and adjustment, and the production and manufacturing cost is high. In addition, the threads of the part are simultaneously rolled out at one time under the action of hydraulic pressure through the pair of thread rolling wheels, so that the pressure is very high, the internal stress of the thread part after thread rolling is large, and for aviation parts, in order to prevent the reliability reduction caused by the internal stress, the internal stress needs to be removed by adding heat treatment. For externally threaded parts with holes inside, the inner holes can deform under pressure, and thread rolling by a thread rolling machine is not suitable. For parts with external threads with holes in the inner part and low requirements on precision and performance, the inner hole can be processed after the threads are rolled. For aviation precision parts, the external thread is machined, and the inner hole part is machined, so that the external thread of the precision part and the internal stress of an external structure are changed, and the precision and the reliability of the parts are influenced. For an external thread aviation-grade precision part with a hole in the inner part, the inner hole can deform under pressure, and thread rolling processing by a thread rolling machine cannot be adopted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a simple structure, be favorable to guaranteeing the part quality, external screw thread tooth form rolling press device that application range is wide.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an external screw thread tooth form rolling press device, includes rolling wheel, dabber subassembly, cutter arbor and locates the elastic component in the cutter arbor, rolling wheel install in on the dabber subassembly, the dabber subassembly is mobilizable install in on the cutter arbor, be equipped with on the cutter arbor and be used for adjusting the regulating part of the elasticity of elastic component, the elastic component is located the dabber subassembly with between the regulating part.

As a further improvement of the above technical solution: the device also comprises a pressure detection component for detecting the pressure between the rolling wheel and the workpiece.

As a further improvement of the above technical solution: the elastic piece is a spiral spring and is sleeved on a guide rod, the guide rod is connected with the mandrel assembly, a guide sleeve is sleeved on the guide rod, and the elastic piece is arranged between the guide sleeve and the adjusting piece.

As a further improvement of the above technical solution: the pressure detection part is a needle type sensor and is provided with a pressure gauge, and the guide sleeve is provided with a collision block matched with the needle type pressure sensor.

As a further improvement of the above technical solution: and a needle type sensor cover plate is also arranged on the cutter bar.

As a further improvement of the above technical solution: the one end that the cutter arbor kept away from the dabber subassembly is equipped with the internal thread hole, the regulating part is for adjusting the screw cap and locate in the internal thread hole.

As a further improvement of the above technical solution: the core shaft assembly comprises a core shaft and a sliding block fixedly arranged on the core shaft, a sliding groove matched with the sliding block is formed in the cutter bar, the rolling wheel is arranged at one end of the core shaft through a rolling bearing, and the other end of the core shaft penetrates through the sliding block and is provided with a fastening piece.

As a further improvement of the above technical solution: the sliding block and the sliding groove are both in a waist-shaped structure.

As a further improvement of the above technical solution: the rolling wheel is of a T-shaped structure, a rolling portion is arranged at the edge of one end with the larger diameter of the rolling wheel, and one end with the smaller diameter of the rolling wheel is sleeved on the mandrel component.

As a further improvement of the above technical solution: the rolling wheel is a hard alloy wheel.

Compared with the prior art, the utility model has the advantages of: the utility model discloses an external thread profile rolling device, before processing, install the cutter arbor on numerical control lathe cutter holder, utilize the adjusting part to adjust the packing force in advance of elastic component, when the work piece is rotatory, drive the rolling wheel and rotate along with the work piece together, along with the feed motion of well layer board, roll press the thread profile of work piece, because the work piece is single tooth line contact with the rolling wheel, therefore the internal stress that causes the work piece is little, the deformation of work piece is little, the precision that can reach is just higher; the workpiece can be rolled by feeding the workpiece for multiple times through a numerically controlled lathe, so that the surface roughness of the workpiece thread can be high; because the rolling wheel works discontinuously on the circumference, the heat dissipation condition is good, and the rolling wheel does not need to be sprayed with oil for cooling like a thread rolling machine during rolling processing, thereby improving the processing environment; for the workpiece with the inner hole, the thread can be reinforced by rolling, and the application range is wide.

Drawings

Fig. 1 is a schematic view of the external thread profile rolling device of the present invention.

Fig. 2 is a schematic side view of the external thread profile rolling device of the present invention.

Fig. 3 is a schematic sectional view of the cutter bar of the present invention.

Fig. 4 is a partially enlarged view of fig. 3.

The reference numerals in the figures denote: 1. rolling wheels; 11. a rolling part; 2. a mandrel assembly; 21. a mandrel; 22. a slider; 23. a rolling bearing; 24. a fastener; 3. a cutter bar; 31. a needle-type sensor cover plate; 32. an internally threaded hole; 33. a chute; 4. an elastic member; 5. an adjustment member; 6. a workpiece; 7. a pressure detecting member; 71. a pressure gauge; 8. a guide bar; 81. a guide sleeve; 82. and (6) bumping the blocks.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Fig. 1 to 4 show an embodiment of the external thread profile rolling device of the present invention, the external thread profile rolling device of this embodiment, include rolling wheel 1, dabber subassembly 2, cutter arbor 3 and locate elastic component 4 in the cutter arbor 3, rolling wheel 1 is installed on dabber subassembly 2, spindle subassembly 2 is mobilizable to be installed on cutter arbor 3, is equipped with the regulating part 5 that is used for adjusting the elasticity of elastic component 4 on the cutter arbor 3, and elastic component 4 is located between dabber subassembly 2 and regulating part 5. The YG8 hard alloy rolling wheel 1 has good wear resistance, use strength and impact toughness.

Before the external thread tooth type rolling device is processed, a cutter bar 3 is arranged on a cutter holder of a numerical control lathe, the pre-compression force of an elastic part 4 is adjusted by an adjusting part 5, a workpiece 6 is arranged on a three-jaw chuck, when the workpiece 6 rotates, a rolling wheel 1 is driven to rotate along with the workpiece 6, and the thread tooth type of the workpiece 6 is rolled along with the feeding motion of a middle supporting plate, and because the workpiece 6 is in single tooth line contact with the rolling wheel 1, the internal stress on the workpiece 6 is small, the deformation of the workpiece 6 is small, and the achievable precision is higher; the workpiece 6 can be rolled by feeding the workpiece for multiple times through a numerically controlled lathe, so that the surface roughness of the workpiece 6 can be high; because the rolling wheel 1 works discontinuously at the circumference, the heat dissipation condition is good, and the rolling wheel 1 does not need to be sprayed with oil and cooled like a thread rolling machine during rolling processing, thereby improving the processing environment; for the workpiece 6 with the inner hole, the thread can be reinforced by rolling, and the application range is wide.

Further, in the present embodiment, the male thread type rolling device further includes a pressure detecting part 7 for detecting a pressure between the rolling wheel 1 and the workpiece 6. If improper operation occurs, the pressure between the rolling wheel 1 and the workpiece 6 exceeds a set value, the pressure detection part 7 can detect in time to remind an operator that the pressure is too high, the machine needs to be stopped to adjust the rolling pressure again, and the safety and the reliability of the device are further improved.

Further, in the embodiment, the elastic element 4 is a coil spring and is sleeved on a guide rod 8, the guide rod 8 is connected with the mandrel assembly 2, a guide sleeve 81 is sleeved on the guide rod 8, and the elastic element 4 is arranged between the guide sleeve 81 and the adjusting element 5. When the adjusting part 5 extrudes the elastic part 4, the elastic part 4 can drive the guide rod 8 and the mandrel component 2 to integrally approach the workpiece 6 through the guide sleeve 81, the guide rod 8 and the cutter bar 3 are matched to prevent the spiral spring from being distorted after being stressed, and the structure is simple and reasonable.

Furthermore, in this embodiment, the pressure detecting member 7 is a needle sensor and is provided with a pressure gauge 71, and a stopper 82 that is engaged with the needle pressure sensor is provided on the guide sleeve 81. When the cutter arbor 3 moves towards the workpiece 6, the needle type sensor moves relative to the guide sleeve 81 along with the cutter arbor 3, when the needle type sensor contacts with the collision block 82, the pressure reaches a set value at the moment, and the pressure value is transmitted to the pressure gauge 71 to be displayed, so that an operator is reminded, and the mechanical pressure detection is reasonable in structure and good in reliability.

In a preferred embodiment, a needle-type sensor cover plate 31 is further provided on the tool bar 3. The needle-type sensor cover plate 31 can prevent foreign matters such as dust from entering the interior of the cutter bar 3 from the position and influencing the performance of the elastic part 4 and the guide rod 8.

As the preferred embodiment, the cutter arbor 3 is equipped with internal thread hole 32 far away from the one end of dabber subassembly 2, and adjusting part 5 is for adjusting the screw cap and locate internal thread hole 32, can adjust the elasticity of elastic component 4 through rotatory adjusting part 5, simple structure, convenient operation. Meanwhile, the adjusting screw cap can prevent foreign matters such as dust from entering the interior of the cutter bar 3 to a certain extent and affecting the performances of the elastic part 4 and the guide rod 8.

Further, in this embodiment, the mandrel assembly 2 includes a mandrel 21 and a sliding block 22 fixed on the mandrel 21, the tool bar 3 is provided with a sliding slot 33 matching with the sliding block 22, the rolling wheel 1 is mounted at one end of the mandrel 21 through a rolling bearing 23, and the other end of the mandrel 21 penetrates through the sliding block 22 and is provided with a fastening member 24. When the slide block 22 is under the elastic force of the elastic piece 4, the slide block can move in the sliding groove 33, and further the mandrel 21 and the rolling wheel 1 can be driven to move integrally; when the thread pitch of the workpiece 6 changes, the fastening piece 24 is loosened, the rolling wheel 1, the mandrel 21 and the like can be integrally pulled out of the sliding groove 33, the rolling wheel 1 of the required type is replaced, the rolling wheel 1 is installed in the sliding groove 33 again, the fastening piece 24 is screwed, machining can be restarted, and the replacement operation is convenient and efficient.

In a preferred embodiment, the sliding block 22 and the sliding slot 33 are both of a kidney-shaped structure, so that the sliding block 22 can move along the sliding slot 33 and can prevent the sliding block 22 from rotating relative to the sliding slot 33.

As a preferred embodiment, the rolling wheel 1 is a T-shaped structure, and the edge of the rolling wheel 1 with a larger diameter is provided with a rolling part 11, and the end with a smaller diameter is sleeved on the mandrel component 2.

The working principle of the utility model is as follows: when the cutter bar 3 moves to the position of the workpiece 6, the mandrel component 2 can be driven to move to the position of the workpiece 6 through the adjusting part 5, the elastic part 4 and the guide sleeve 81, the cutter bar 3 stops moving after the rolling wheel 1 contacts the workpiece 6, the pressure gauge 71 and the needle type sensor move along with the cutter bar 3 at the moment, when the needle type sensor contacts with the collision block 82 along with the cutter bar 3, the pressure value of the pressure gauge 71 changes, the pressure between the workpiece 6 and the rolling wheel 1 reaches a set value, the cutter bar 3 stops moving, and the rolling wheel 1 starts to perform rolling processing.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides an external screw thread profile of tooth rolling press device which characterized in that: including rolling wheel (1), dabber subassembly (2), cutter arbor (3) and locate elastic component (4) in cutter arbor (3), rolling wheel (1) install in on dabber subassembly (2), dabber subassembly (2) mobilizable install in on cutter arbor (3), be equipped with on cutter arbor (3) and be used for adjusting regulating part (5) of the elasticity of elastic component (4), elastic component (4) are located dabber subassembly (2) with between regulating part (5).

2. The male thread rolling device of claim 1, wherein: the device also comprises a pressure detection component (7) for detecting the pressure between the rolling wheel (1) and the workpiece (6).

3. The male thread rolling device of claim 2, wherein: the elastic piece (4) is a spiral spring and is sleeved on a guide rod (8), the guide rod (8) is connected with the mandrel component (2), a guide sleeve (81) is sleeved on the guide rod (8), and the elastic piece (4) is arranged between the guide sleeve (81) and the adjusting piece (5).

4. The male thread rolling device of claim 3, wherein: the pressure detection part (7) is a needle type sensor and is provided with a pressure gauge (71), and a collision block (82) matched with the needle type sensor is arranged on the guide sleeve (81).

5. The male thread rolling device of claim 4, wherein: and a needle type sensor cover plate (31) is also arranged on the cutter bar (3).

6. The male thread rolling device of claim 1, wherein: one end of the cutter bar (3) far away from the core shaft assembly (2) is provided with an internal thread hole (32), and the adjusting piece (5) is an adjusting screw cap and is arranged in the internal thread hole (32).

7. An externally threaded profile rolling device according to any one of claims 1 to 6, wherein: the mandrel component (2) comprises a mandrel (21) and a sliding block (22) fixedly arranged on the mandrel (21), a sliding groove (33) matched with the sliding block (22) is formed in the tool bar (3), the rolling wheel (1) is installed at one end of the mandrel (21) through a rolling bearing (23), and the other end of the mandrel (21) penetrates through the sliding block (22) and is provided with a fastener (24).

8. The male thread rolling device of claim 7, wherein: the sliding block (22) and the sliding groove (33) are both in a kidney-shaped structure.

9. An externally threaded profile rolling device according to any one of claims 1 to 6, wherein: the rolling wheel (1) is of a T-shaped structure, a rolling part (11) is arranged at the edge of the larger diameter end of the rolling wheel (1), and the smaller diameter end of the rolling wheel is sleeved on the mandrel component (2).

10. The apparatus for rolling an externally threaded profile as claimed in claim 9, wherein: the rolling wheel (1) is a hard alloy wheel.

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