A core expander clamp for cylinder liner machining

Abstract

The utility model belongs to the field of cylinder sleeve, especially a kind of for the cylinder sleeve processing of core expansion clamp, it includes cylinder sleeve clamping expansion sleeve and the core expansion shaft being arranged inside the cylinder sleeve clamping expansion sleeve, the core expansion clamp for the cylinder sleeve processing further includes: triangular block ring, triangular block ring bolt connection is in the inner wall of cylinder sleeve clamping expansion sleeve;Mounting assembly, mounting assembly includes mounting disc, transmission cylinder and support cylinder, the top of mounting disc and the bottom of transmission cylinder are welded, the top of transmission cylinder and the bottom of support cylinder are communicated, and the top end of support cylinder surface and the bottom end inside cylinder sleeve clamping expansion sleeve bolt connection, in the utility model, through hydraulic cylinder, core expansion shaft can be driven to lift, so it can be expanded to cylinder sleeve clamping expansion sleeve, device inside self-contained power, so it is not necessary to set power additionally, reduce trouble, through lifting mechanism, the depth of cylinder sleeve clamping expansion sleeve insertion can be adjusted, so it can be positioned to lift cylinder sleeve.

Description

Technical Field

[0001] This utility model relates to the field of cylinder liner technology, and in particular to a core expansion fixture for cylinder liner machining. Background Technology

[0002] The expansion mandrel, also known as the expansion sleeve clamp, is a special clamp that uses the inner hole as a reference for positioning and clamping. In the prior art, Chinese patent document with application number 201821846542.0 discloses a single cone expansion mandrel for cylinder liners.

[0003] However, due to structural defects, the above technical solution still has the following problems: 1. The movement of the expansion core requires an additional power component, which is not compatible with the device itself, thus placing requirements on the connected equipment; 2. During the clamping and fixing of the cylinder liner, there is a lack of limit on the cylinder liner, and the clamp can easily be inserted too deeply into the cylinder liner. Summary of the Invention

[0004] The purpose of this utility model is to solve the shortcomings of existing technologies, such as lack of power and lack of limit, and to propose a core expansion fixture for cylinder liner processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A mandrel expanding fixture for cylinder liner machining includes a cylinder liner clamping expanding sleeve and a mandrel expanding shaft disposed inside the cylinder liner clamping expanding sleeve. The mandrel expanding fixture for cylinder liner machining further includes: The triangular block ring is bolted to the inner wall of the cylinder liner clamping expansion sleeve; The mounting assembly includes a mounting plate, a transmission cylinder, and a support cylinder. The top of the mounting plate is welded to the bottom of the transmission cylinder, the top of the transmission cylinder is connected to the bottom of the support cylinder, and the top of the surface of the support cylinder is bolted to the bottom of the cylinder liner clamping expansion sleeve. The tie rod is bolted to the bottom of the expansion mandrel; The hinge rod is hinged to the bottom end of the pull rod; The transmission rod is hinged to the bottom end of the hinge rod; Hydraulic cylinder, the hydraulic cylinder is hinged to the movable slot of the transmission rod; The lifting mechanism is connected to the transmission cylinder. It can drive the expansion mandrel to rise and fall through the hydraulic cylinder, thus expanding the cylinder sleeve clamped by the expansion sleeve. The device has its own internal power, so there is no need to set up an additional power source, reducing trouble. The lifting mechanism can adjust the insertion depth of the cylinder sleeve clamped by the expansion sleeve, thus limiting the lifting of the cylinder sleeve.

[0006] As a preferred embodiment of this utility model, the lifting mechanism includes a power motor, a large gear, a small gear, and a lifting assembly. The output end of the power motor is keyed to the shaft of the large gear. There are two small gears, both of which mesh with the large gear. The small gears are keyed to the lifting assembly.

[0007] Furthermore, the power supply to the motor is turned on. The power supply can be either external or internal, and it is controlled by a controller. The motor can drive the large gear to rotate, and the large gear can drive the two small gears to rotate.

[0008] As a preferred embodiment of this utility model, the lifting assembly includes a lead screw, a support rod, and a lifting ring. There are two lead screws and two support rods. The shaft of the pinion is keyed to the bottom end of the lead screw. The surface of the lead screw is threaded to the screw hole of the support rod. The top ends of the two support rods are welded to the front and rear sides of the bottom of the lifting ring, respectively.

[0009] Furthermore, the pinion can drive the lead screw to rotate, and the lead screw can use its thread to drive the support rod to move upward. The two support rods can drive the lifting ring to move upward or downward, thus limiting the cylinder liner.

[0010] In a preferred embodiment of this utility model, the bottom of the power motor is bolted to the bottom end of the transmission cylinder, and the output end of the power motor extends into the interior of the mounting plate.

[0011] Furthermore, the power motor is fixed by the transmission cylinder to ensure its stability, with both the large and small gears located inside the mounting plate.

[0012] In a preferred embodiment of this utility model, the bottom end of the lead screw surface is rotatably sleeved with the hole at the bottom end of the transmission cylinder, and the surface of the support rod is slidably connected with the sliding hole at the top of the transmission cylinder.

[0013] Furthermore, the lead screw is rotatably connected to the transmission cylinder via bearings to ensure the smoothness of the lead screw rotation, and the support rod is slidably connected to the transmission cylinder via a slide rail to guide the support rod and facilitate the support rod to drive the lifting ring.

[0014] In a preferred embodiment of this utility model, the triangular block ring is formed by splicing together multiple triangular blocks, and the surface of the expansion mandrel is slidably connected to the inner side of the triangular block ring.

[0015] Furthermore, the expansion mandrel has an overall frustum cylindrical structure, with the diameter of the top of the expansion mandrel being larger than the diameter of the bottom. When it cooperates with the triangular block ring, it can generate outward extrusion force through the triangular block ring when the expansion mandrel moves.

[0016] In a preferred embodiment of this utility model, the surface of the pull rod is slidably connected to the sliding hole at the top of the support cylinder, the transmission rod is hinged to the transmission cylinder, and the bottom end of the hydraulic cylinder is hinged to the bottom end inside the transmission cylinder.

[0017] Furthermore, the tie rod is slidably set with the support cylinder via a slide rail to guide the tie rod, the transmission rod is rotatably set with the transmission cylinder via a bearing, and the hydraulic cylinder is hinged with the transmission cylinder via a hinge lug.

[0018] Beneficial effects: 1. The hydraulic cylinder can drive the transmission rod to rotate, the transmission rod can drive the hinge rod to move, the hinge rod can drive the pull rod to move, the pull rod can drive the expansion mandrel, and the expansion mandrel uses the triangular block ring to drive the cylinder sleeve to clamp the expansion sleeve to expand; 2. The power motor can drive the small gear to rotate through the large gear, and the small gear can drive the support rod to rise and fall through the lead screw. The support rod can drive the lifting ring to limit the cylinder liner. In this invention: the hydraulic cylinder can drive the expansion mandrel to rise and fall, thus expanding the cylinder sleeve clamping the expansion sleeve. The device has its own internal power, so there is no need to set up an additional power source, reducing trouble. The lifting mechanism can adjust the insertion depth of the cylinder sleeve clamping the expansion sleeve, thus limiting and lifting the cylinder sleeve. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of an expansion clamp for cylinder liner machining proposed in this utility model. Figure 2 This utility model provides a perspective view of a cylinder liner clamping expansion sleeve for cylinder liner machining. Figure 3 This is a perspective view of the expansion shaft of an expansion clamp for cylinder liner machining proposed in this utility model; Figure 4 This is a perspective view of the lifting ring of a core-expanding fixture for cylinder liner machining proposed in this utility model.

[0020] In the diagram: 1. Cylinder liner clamping expansion sleeve; 2. Expansion mandrel; 3. Triangular block ring; 4. Mounting plate; 5. Transmission cylinder; 6. Support cylinder; 7. Hydraulic cylinder; 8. Transmission rod; 9. Hinge rod; 10. Tie rod; 11. Power motor; 12. Large gear; 13. Small gear; 14. Lead screw; 15. Support rod; 16. Lifting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example Reference Figure 1-4 A mandrel for cylinder liner machining includes a cylinder liner clamping expansion sleeve 1 and a mandrel 2 disposed inside the cylinder liner clamping expansion sleeve 1. The mandrel for cylinder liner machining further includes: Triangular block ring 3 is bolted to the inner wall of cylinder liner clamping expansion sleeve 1; The mounting assembly includes a mounting plate 4, a transmission cylinder 5, and a support cylinder 6. The top of the mounting plate 4 is welded to the bottom of the transmission cylinder 5, the top of the transmission cylinder 5 is connected to the bottom of the support cylinder 6, and the top of the surface of the support cylinder 6 is bolted to the bottom of the cylinder liner clamping sleeve 1. Tie rod 10 is bolted to the bottom of expansion mandrel 2; Hinged rod 9 is hinged to the bottom end of tie rod 10; Transmission rod 8 is hinged to the bottom end of hinge rod 9; Hydraulic cylinder 7 is hinged to the movable slot of transmission rod 8; The lifting mechanism is connected to the transmission cylinder 5. The hydraulic cylinder 7 can drive the expansion shaft 2 to rise and fall, thus expanding the cylinder sleeve clamping the expansion sleeve 1. The device has its own internal power, so there is no need to set up an additional power source, reducing trouble. The lifting mechanism can adjust the insertion depth of the cylinder sleeve clamping the expansion sleeve 1, thus limiting the lifting of the cylinder sleeve.

[0023] In order to produce a lifting and limiting effect, such as Figure 4 As shown, the lifting mechanism includes a power motor 11, a large gear 12, a small gear 13, and a lifting assembly. The output end of the power motor 11 is keyed to the shaft of the large gear 12. There are two small gears 13, both of which mesh with the large gear 12. The small gears 13 are keyed to the lifting assembly. When the power motor 11 is powered on, the power supply can be either an external or internal power source, and it is controlled by a controller. The power motor 11 can drive the large gear 12 to rotate, the large gear 12 can drive the two small gears 13 to rotate, and the small gears 13 can drive the lifting assembly to rotate.

[0024] In order to utilize the lifting ring 16 to create a lifting limit effect, such as Figure 4 As shown, the lifting assembly includes a lead screw 14, a support rod 15, and a lifting ring 16. There are two lead screws 14 and two support rods 15. The shaft of the pinion 13 is keyed to the bottom end of the lead screw 14. The surface of the lead screw 14 is threaded to the threaded hole of the support rod 15. The top ends of the two support rods 15 are welded to the front and rear sides of the bottom of the lifting ring 16, respectively. The pinion 13 can drive the lead screw 14 to rotate. The lead screw 14 can drive the support rod 15 to move upward using the thread. The two support rods 15 can drive the lifting ring 16 to move upward or downward, thus limiting the cylinder liner.

[0025] To protect the large gear 12 and the small gear 13, such as Figure 4 As shown, the bottom of the power motor 11 is bolted to the bottom of the transmission cylinder 5. The output end of the power motor 11 extends into the interior of the mounting plate 4. The power motor 11 is fixed by the transmission cylinder 5 to ensure the stability of the power motor 11. The large gear 12 and the small gear 13 are both located inside the mounting plate 4.

[0026] To stabilize the lead screw 14, such as Figure 4 As shown, the bottom end of the lead screw 14 is rotatably connected to the hole at the bottom end of the transmission cylinder 5, and the surface of the support rod 15 is slidably connected to the sliding hole at the top of the transmission cylinder 5. The lead screw 14 is rotatably set with the transmission cylinder 5 through the bearing to ensure the smooth rotation of the lead screw 14. The support rod 15 is slidably set with the transmission cylinder 5 through the slide rail to guide the support rod 15 and facilitate the support rod 15 to drive the lifting ring 16.

[0027] In order to generate compressive force on the cylinder liner clamping expansion sleeve 1, such as Figure 2 As shown, the triangular block ring 3 is composed of multiple triangular blocks spliced ​​together. The surface of the expansion mandrel 2 is slidably connected to the inner side of the triangular block ring 3. The expansion mandrel 2 has a frustum cylindrical structure. The diameter of the top of the expansion mandrel 2 is larger than the diameter of the bottom. When it cooperates with the triangular block ring 3, it can generate an outward squeezing force through the triangular block ring 3 when the expansion mandrel 2 moves.

[0028] To facilitate the lifting and lowering of the expansion mandrel 2, such as Figure 3 As shown, the surface of the pull rod 10 is slidably connected to the sliding hole at the top of the support cylinder 6, the transmission rod 8 is hinged to the transmission cylinder 5, the bottom end of the hydraulic cylinder 7 is hinged to the bottom end inside the transmission cylinder 5, the pull rod 10 is slidably set with the support cylinder 6 through the slide rail to guide the pull rod 10, the transmission rod 8 is rotatably set with the transmission cylinder 5 through the bearing, and the hydraulic cylinder 7 is hinged to the transmission cylinder 5 through the hinge lug.

[0029] It should be noted that the specific model of hydraulic cylinder 7 and power motor 11 used shall be selected by those skilled in the art, and the above-mentioned hydraulic cylinder 7 and power motor 11 are all existing technologies, which will not be elaborated in this solution.

[0030] The cylinder liner clamping expansion sleeve 1 and expansion mandrel 2 adopts existing technology, and can adopt the expansion sleeve box expansion mandrel structure of the patent with application number 201821846542.0.

[0031] The operation steps of this utility model are as follows: The mounting plate 4 is installed on a lathe or similar machine. The cylinder sleeve clamps the expansion sleeve 1 and the expansion mandrel 2 through the transmission cylinder 5 and the support cylinder 6. The hydraulic power of the hydraulic cylinder 7 is turned on, which can drive the transmission rod 8 to rotate. The transmission rod 8 can drive the hinge rod 9 to move. The hinge rod 9 can drive the pull rod 10 to move. The pull rod 10 can drive the expansion mandrel 2. The expansion mandrel 2 uses the triangular block ring 3 to drive the cylinder sleeve clamping the expansion sleeve 1 to expand, thereby clamping and positioning the cylinder sleeve. The power of the power motor 11 is turned on. The power can be an external power supply or an internal power supply, and it is controlled by a controller. The power motor 11 can drive the large gear 12 to rotate. The large gear 12 can drive the two small gears 13 to rotate. The small gears 13 can drive the lead screw 14 to rotate. The lead screw 14 can drive the support rod 15 to move upward through the thread. The support rod 15 can drive the lifting ring 16 to limit the cylinder sleeve.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mandrel expansion fixture for cylinder liner machining, comprising a cylinder liner clamping expansion sleeve (1) and a mandrel expansion shaft (2) disposed inside the cylinder liner clamping expansion sleeve (1), characterized in that, The expansion jig used for cylinder liner machining also includes: Triangular block ring (3), the triangular block ring (3) is bolted to the inner wall of the cylinder liner clamping expansion sleeve (1); The mounting assembly includes a mounting plate (4), a transmission cylinder (5), and a support cylinder (6). The top of the mounting plate (4) is welded to the bottom of the transmission cylinder (5), the top of the transmission cylinder (5) is connected to the bottom of the support cylinder (6), and the top of the surface of the support cylinder (6) is connected to the bottom bolt inside the cylinder liner clamping expansion sleeve (1). Tie rod (10) is bolted to the bottom of expansion mandrel (2); Hinged rod (9), hinged rod (9) is hinged to the bottom end of tie rod (10); Transmission rod (8), which is hinged to the bottom end of hinge rod (9); Hydraulic cylinder (7), the hydraulic cylinder (7) is hinged to the movable groove of the transmission rod (8); The lifting mechanism is connected to the transmission cylinder (5).

2. The expansion jig for cylinder liner machining according to claim 1, characterized in that, The lifting mechanism includes a power motor (11), a large gear (12), a small gear (13), and a lifting assembly. The output end of the power motor (11) is keyed to the shaft of the large gear (12). There are two small gears (13), both of which mesh with the large gear (12). The small gears (13) are keyed to the lifting assembly.

3. The expansion jig for cylinder liner machining according to claim 2, characterized in that, The lifting assembly includes a lead screw (14), a support rod (15), and a lifting ring (16). There are two lead screws (14) and two support rods (15). The shaft of the pinion (13) is keyed to the bottom end of the lead screw (14). The surface of the lead screw (14) is threaded to the screw hole of the support rod (15). The top ends of the two support rods (15) are welded to the front and rear sides of the bottom of the lifting ring (16), respectively.

4. A core-expanding fixture for cylinder liner machining according to claim 2, characterized in that, The bottom of the power motor (11) is bolted to the bottom end of the transmission cylinder (5), and the output end of the power motor (11) extends into the interior of the mounting plate (4).

5. A core-expanding fixture for cylinder liner machining according to claim 3, characterized in that, The bottom end of the lead screw (14) is rotatably connected to the hole at the bottom end of the transmission cylinder (5), and the surface of the support rod (15) is slidably connected to the sliding hole at the top of the transmission cylinder (5).

6. A core-expanding fixture for cylinder liner machining according to claim 1, characterized in that, The triangular block ring (3) is composed of multiple triangular blocks spliced ​​together, and the surface of the expansion mandrel (2) is slidably connected to the inner side of the triangular block ring (3).

7. A core-expanding fixture for cylinder liner machining according to claim 1, characterized in that, The surface of the pull rod (10) is slidably connected to the sliding hole at the top of the support cylinder (6), the transmission rod (8) is hinged to the transmission cylinder (5), and the bottom end of the hydraulic cylinder (7) is hinged to the bottom end inside the transmission cylinder (5).

Images