Calipers for hobbing cutters with different diameters

Abstract

The utility model relates to the technical field of hobbing cutter calipers, and discloses a pair of calipers for hobbing cutters with different diameters, which comprises a first caliper body, a second caliper body, a thread bushing, a double-thread screw and a hand wheel, and the rear end of the second caliper body is hinged with the rear end of the first caliper body; threaded sleeves are arranged on the first clamp body and the second clamp body; the upper portion and the lower portion of the double-thread screw are installed on the two threaded sleeves in a threaded fit mode respectively. The hand wheel is fixed at the top end of the double-thread screw; the double-thread screw is rotated through the hand wheel, the two threaded sleeves are driven to move, and opening and tightening between the first plier body and the second plier body are achieved. The first clamp body and the second clamp body respectively comprise a rear clamp body, a connecting part, a front clamp body and a groove, and the rear end of the connecting part is connected with the front end of the rear clamp body. The gear hobbing cutter can be clamped and loosened manually, and the gear hobbing cutter clamping device is reliable in structure, easy to operate and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of hobbing cutter calipers, in particular to a caliper for hobbing cutters with different diameters. Background Art

[0002] Hobbing is one of the commonly used machining methods in gear machining. It has the advantages of fast machining speed, less tool wear, and high consistency of each tooth. Usually, a rotating hobbing cutter cuts a rotating workpiece, and the tooth profile is gradually machined by the hobbing cutter. During the use of the hobbing cutter, it needs to be fixed. There are also some hobbing cutter fixtures / calipers in the prior art, such as:

[0003] The Chinese utility model patent with the application number CN201220341179.3 and the name of a fixture device for a hobbing cutter includes a hobbing cutter and a fixture seat for fixing the hobbing cutter. Its structure is simple, easy to disassemble and assemble, safe and reliable. However, it is mainly used to keep the position of the hobbing cutter stable and prevent it from deviating during machining.

[0004] Another example is the Chinese utility model patent with the application number CN202322476034.5 and the name of a caliper fixture. It drives a threaded rod to rotate through a first motor, so that a positioning block drives a clamp and a first slider to move inward, and a fixed block and a first anti-slip pad move forward, thereby fixing the back surface of the workpiece. However, it is mainly used to improve the clamping and fixing coefficient of the overall device and solve the problems of poor fixing effect and inconvenient adjustment of the caliper fixture in the prior art.

[0005] Another example is the Chinese utility model patent with the application number CN202220221343.0 and the name of a multi-adaptable hobbing cutter fixture. It drives a chuck to move in a chute by manually rotating a screw rod 4 through a handle 401, changes the distance between the two chucks, selects a corresponding universal joint connector in the horizontal or vertical direction to position the hobbing cutter die, and then adjusts the chuck along the chute to a suitable position, and then clamps the hobbing cutter die. However, it is mainly used to machine hobbing cutters with different helix angles and axial lengths. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a caliper for hobbing cutters with different diameters, which is different from the existing structure, can manually clamp and loosen the hobbing cutter, has a reliable structure, is simple to operate, and has a wide range of uses.

[0007] The present utility model is implemented by the following technical solutions: A chuck for hobbing cutters with different diameters, comprising a first clamp body, a second clamp body, a threaded sleeve, a double-headed screw and a handwheel. The rear end of the second clamp body is hinged to the rear end of the first clamp body. Threaded sleeves are provided on both the first clamp body and the second clamp body. The upper and lower parts of the double-headed screw are respectively installed on the two threaded sleeves through threaded fit. The handwheel is fixed at the top end of the double-headed screw. By rotating the handwheel to drive the double-headed screw, the movement between the two threaded sleeves is driven, so as to realize the opening and closing between the first clamp body and the second clamp body.

[0008] Further, each of the first clamp body and the second clamp body respectively comprises a rear clamp body, a connecting part, a front clamp body and a groove. The rear end of the connecting part is connected to the front end of the rear clamp body, and the included angle between the inner sides of the two is 110 - 140°; the rear end of the front clamp body is connected to the front end of the connecting part, and the included angle between the inner sides of the two is 110 - 130°; the groove is directly formed between the inner sides of the front clamp body and the connecting part.

[0009] Further, a sleeve hole is provided at the center of the connection between the rear clamp body and the connecting part. The threaded sleeve is horizontally arranged in the sleeve hole. External threads are provided at both ends of the threaded sleeve. Both ends of the threaded sleeve respectively extend to the outer ends of the rear clamp body, and first external circlips are respectively installed at both ends of the threaded sleeve.

[0010] Further, a hinge groove is provided at the rear end of the first clamp body, and a hinge part is provided at the rear end of the second clamp body. The hinge part is installed in the hinge groove through a pin shaft. External threads are provided at both ends of the pin shaft. Both ends of the pin shaft respectively extend to the outer ends of the clamp body, and second external circlips are respectively installed at both ends of the pin shaft.

[0011] Further, nylon blocks are symmetrically arranged on the inner sides of the front clamp body and the connecting part.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For the chuck for hobbing cutters with different diameters of the present utility model, by turning the handwheel, the double-headed screw rotates. The double-headed screw drives the first clamp body and the second clamp body to simultaneously tighten or open through the threads with reverse threads at both ends, so as to be able to clamp the shanks of hobbing cutters within a certain diameter range. The operation of this chuck for hobbing cutters is simple and the structure is reliable.

[0014] 2. The chuck for hobbing cutters with different diameters of the present utility model can be used to horizontally clamp the shanks of hobbing cutters within a certain size range, horizontally fix and support the shanks of hobbing cutters, and can also be used to vertically clamp the shanks of hobbing cutters within a certain size range, vertically fix and hoist and move the shanks of hobbing cutters, and has a wider range of use. Description of the Drawings

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 2 is a cross-sectional view of the present utility model;

[0017] Figure 3 is a front view of the present utility model;

[0018] Figure 4 is a structure schematic diagram when the present utility model is used for horizontally clamping a hobbing cutter handle;

[0019] Figure 5 is a structure schematic diagram when the present utility model is used for vertically clamping a hobbing cutter handle.

[0020] In the figure: the first clamp body 1, the second clamp body 2, the first outer snap ring 3, the threaded sleeve 4, the second outer snap ring 5, the pin shaft 6, the double-headed screw 7, the hand wheel 8, the nylon block 9, the sleeve hole 10, the rear clamp body 11, the connecting portion 12, the front clamp body 13, the groove 14, the hinge groove 15, the hinge portion 16, the hobbing cutter handle 20. Specific embodiments

[0021] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0022] The purpose of the present utility model is to provide a caliper for hobbing cutters with different diameters in view of the defects of the prior art.

[0023] Embodiment 1

[0024] This embodiment provides a caliper for hobbing cutters with different diameters. Refer to Figure 1 , Figure 2As shown, it includes a first pliers body 1, a second pliers body 2, a threaded sleeve 4, a double-headed screw rod 7 and a handwheel 8. The rear end of the second pliers body 2 is hinged to the rear end of the first pliers body 1. Threaded sleeves 4 are provided on both the first pliers body 1 and the second pliers body 2. External threads are provided on both the upper and lower parts of the double-headed screw rod 7, with one end having a right-hand thread and the other end having a left-hand thread. There is no external thread at the top and middle of the double-headed screw rod 7. The upper and lower parts of the double-headed screw rod 7 are respectively installed on the two threaded sleeves 4 through thread fitting. The handwheel 8 is fixed to the top end of the double-headed screw rod 7. By rotating the double-headed screw rod 7 with the handwheel 8, the movement between the two threaded sleeves 4 is driven, realizing the opening and tightening between the first pliers body 1 and the second pliers body 2, and is used for clamping and loosening the hobbing cutter handle.

[0025] Referring to Figure 2 As shown, the front structures of the first pliers body 1 and the second pliers body 2 are the same, and only the rear structures are different. Specifically, the first pliers body 1 and the second pliers body 2 respectively include a rear pliers body 11, a connecting part 12, a front pliers body 13 and a groove 14. The rear end of the connecting part 12 is connected to the front end of the rear pliers body 11, and the included angle between their inner sides is 110 - 140°. The rear end of the front pliers body 13 is connected to the front end of the connecting part 12, and the included angle between their inner sides is 110 - 130°. The groove 14 is directly formed between the inner sides of the front pliers body 13 and the connecting part 12. Specifically, an articulated groove 15 is provided on the rear pliers body 11 at the rear end of the first pliers body 1, and an articulated part 16 is provided at the rear end of the second pliers body 2. The articulated part 16 is installed in the articulated groove 15 through a pin shaft 6. External threads are provided at both ends of the pin shaft 6, and both ends of the pin shaft 6 respectively extend to the outer ends of the pliers body. Second external circlips 5 are respectively installed at both ends of the pin shaft 6.

[0026] Referring to Figure 1 、 Figure 2 As shown, a socket hole 10 is provided at the center of the connection between the rear pliers body 11 and the connecting part 12. The threaded sleeve 4 is horizontally arranged in the socket hole 10. External threads are provided at both ends of the threaded sleeve 4, and both ends of the threaded sleeve 4 respectively extend to the outer ends of the rear pliers body 11. First external circlips 3 are respectively installed at both ends of the threaded sleeve 4.

[0027] Referring to Figures 2 - 4 As shown, four nylon blocks 9 are symmetrically arranged on the inner sides of the front pliers body 13 and the connecting part 12, which are used to increase the frictional clamping force for clamping the hobbing cutter handle 20.

[0028] A kind of chuck for hobbing cutters with different diameters provided in this embodiment, when in use, by turning the handwheel 8, the double-headed screw rod 7 rotates, and the double-headed screw rod 7 drives the first clamp body 1 and the second clamp body 2 to tighten or open simultaneously through the threads arranged with reverse threads at both ends. When it is necessary to clamp the hobbing cutter handle 20, turn the handwheel 8 to drive the first clamp body 1 and the second clamp body 2 to open and sleeve them onto the hobbing cutter handle 20 to be clamped, and turn the handwheel 8 in the reverse direction to drive the first clamp body 1 and the second clamp body 2 to tighten the clamped hobbing cutter handle. When it is necessary to loosen, turn the handwheel 8 in the reverse direction again to drive the first clamp body 1 and the second clamp body 2 to open, and when the opening degree is greater than the diameter of the handle, the tool can be taken off, so that the hobbing cutter handle within a certain diameter range can be clamped. The operation of this hobbing cutter chuck is simple and the structure is reliable.

[0029] It should be noted that, as shown in Figure 4 the chuck of the hobbing cutter of the present invention can be used to horizontally clamp a hobbing cutter handle of a certain size, that is, to horizontally fix and support the hobbing cutter handle 20; as shown in Figure 5 the chuck of the hobbing cutter of the present invention can also be used to vertically clamp a hobbing cutter handle of a certain size, that is, after vertically clamping the hobbing cutter handle 20, it is matched with the existing mobile device to hoist and move the hobbing cutter handle 20. In addition, it should be understood that the present invention can not only be limited to clamping hobbing cutters with different diameters, but can also be used to clamp other objects similar to the structure of the hobbing cutter handle.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hobbing cutter caliper for different diameters, characterized in that: Comprising A first jaw body (1); A second jaw body (2), which is hinged between the rear end of the second jaw body (2) and the rear end of the first jaw body (1); Threaded sleeves (4), which are provided on both the first jaw body (1) and the second jaw body (2); A double-headed screw rod (7), the upper and lower parts of which are respectively installed on two threaded sleeves (4) through threaded fit; and A hand wheel (8), which is fixed at the top end of the double-headed screw rod (7); By rotating the double-headed screw rod (7) with the hand wheel (8), the movement between the two threaded sleeves (4) is driven to realize the opening and closing between the first jaw body (1) and the second jaw body (2).

2. The hobbing cutter caliper for different diameters according to claim 1, wherein: Both the first jaw body (1) and the second jaw body (2) respectively comprise A rear jaw body (11); A connecting part (12), the rear end of which is connected to the front end of the rear jaw body (11), and the included angle between the inner sides of the two is 110 - 140°; A front jaw body (13), the rear end of which is connected to the front end of the connecting part (12), and the included angle between the inner sides of the two is 110 - (130)°; and A groove (14), which is directly formed on the inner sides of the front jaw body (13) and the connecting part (12).

3. The hobbing cutter caliper for different diameters according to claim 2, characterized in that: A sleeve hole (10) is provided at the center of the connection between the rear jaw body (11) and the connecting part (12). The threaded sleeve (4) is horizontally arranged in the sleeve hole (10). The two ends of the threaded sleeve (4) are provided with external threads. The two ends of the threaded sleeve (4) respectively extend to the outer ends of the rear jaw body, and first external circlips (3) are respectively installed at the two ends of the threaded sleeve (4).

4. The hobbing cutter caliper for different diameters according to claim 2 or 3, characterized in that: An articulated groove (15) is provided at the rear end of the first jaw body (1). An articulated part (16) is provided at the rear end of the second jaw body (2). The articulated part (16) is installed in the articulated groove (15) through a pin shaft (6). The two ends of the pin shaft (6) are provided with external threads. The two ends of the pin shaft (6) respectively extend to the outer ends of the jaw body, and second external circlips (5) are respectively installed at the two ends of the pin shaft (6).

5. The hobbing cutter caliper for different diameters according to claim 2, wherein: Nylon blocks (9) are symmetrically arranged on the inner sides of the front jaw body (13) and the connecting part (12).

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