Floating positioning clamp of gear shaping machine

Abstract

The utility model discloses a gear shaping machine floating positioning clamp, which relates to the technical field of gear shaping machines, and comprises a fixed seat and a deviation rectifying assembly, a sealing cylinder is arranged in the fixed seat, an end cover is arranged on the top of the sealing cylinder, the deviation rectifying assembly is arranged in the sealing cylinder, and the end cover is arranged on the end cover. And the deviation rectifying assembly comprises an inner bushing, a cushion block, a bottom cover, a supporting spring, a floating pin and a guide part, the inner bushing is arranged in the sealing cylinder, and the cushion block is connected to the top of the inner bushing. According to the floating positioning clamp of the gear shaping machine, through the arrangement of the deviation rectifying assembly, when a workpiece is placed above the cushion block, the lower end of the workpiece can make contact with the top of the floating pin, at the moment, a hole part of the workpiece is guided through the conical guiding part, and therefore when the hydraulic cylinder drives the pressing block to move, the workpiece can be quickly centered; the gear shaping machining precision is prevented from being affected by axis deviation, and after the gear shaping device is centered, the workpiece can be pressed on the cushion block along with contraction of the supporting spring subsequently.

Description

Technical Field

[0001] This utility model relates to the field of gear hobbing machine technology, specifically a floating positioning fixture for a gear hobbing machine. Background Technology

[0002] A gear shaper is a metal cutting machine tool mainly used for processing internal and external spur and helical cylindrical gears and other toothed parts. Its working principle is to process the gear shaper by using a gear shaper cutter to perform a generating method. The gear shaper cutter makes a reciprocating cutting motion and rolls relative to the workpiece, thereby processing the tooth shape of the gear. When the gear shaper is processing the workpiece, a positioning fixture is required to hold the workpiece.

[0003] Existing positioning fixtures require manual centering of the workpiece during the clamping process. This centering operation is greatly affected by human intervention and requires careful observation, thus impacting the overall clamping efficiency.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a floating positioning fixture for a gear hobbing machine. Utility Model Content

[0005] The purpose of this utility model is to provide a floating positioning fixture for a gear hobbing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a floating positioning fixture for a gear hobbing machine, comprising a fixed base and a correction assembly. The fixed base has a sealing cylinder inside, and an end cap is placed on the top of the sealing cylinder. The correction assembly is disposed inside the sealing cylinder. The correction assembly includes an inner bushing, a pad, a bottom cover, a support spring, a floating pin, and a guide portion. The inner bushing is disposed inside the sealing cylinder, and a pad is connected to the top of the inner bushing. The bottom cover is placed at the bottom of the inner bushing, and a support spring is connected to the top of the bottom cover. A floating pin is connected to the top of the support spring, and a guide portion is provided on the top of the floating pin.

[0007] Furthermore, a workpiece is disposed on the top of the pad, and a clamping assembly is connected to the top of the workpiece.

[0008] Furthermore, the clamping assembly includes a pressure block and a slide block, with the pressure block provided on the top of the workpiece and the slide block fixed on one side of the pressure block.

[0009] Furthermore, the clamping assembly also includes a hydraulic cylinder and a fixed housing. The end of the slide is connected to the hydraulic cylinder, and the end of the hydraulic cylinder is fixed to the fixed housing, which is slidably connected to the slide.

[0010] Furthermore, the fixed base is provided with a locking assembly, which includes a hydraulic channel and a piston rod. The hydraulic channel is opened at one end of the fixed base and is connected to the inside of one end of the sealing cylinder. The piston rod is slidably connected to the inside of one end of the sealing cylinder.

[0011] Furthermore, the locking assembly also includes a clamping block and a rotating shaft. The clamping block is slidably connected to the top of the piston rod, and a rotating shaft is disposed inside the lower end of the clamping block, and the rotating shaft is rotatably connected to the inner bushing.

[0012] Furthermore, a reset assembly is provided inside one end of the end cap. The reset assembly includes a fixed cylinder and a sealing plug. The fixed cylinder is fixed inside one end of the end cap, and the sealing plug is threadedly connected to the upper end of the fixed cylinder.

[0013] Furthermore, the reset assembly also includes a reset spring and a top post. The bottom of the sealing plug is connected to the reset spring, and the bottom of the reset spring is provided with a top post, which is slidably connected to the fixed cylinder.

[0014] This utility model provides a floating positioning fixture for a gear hobbing machine, which has the following advantages:

[0015] 1. By setting up the correction component, when the workpiece is placed above the pad, the lower end of the workpiece can contact the top of the floating pin. At this time, the tapered guide part guides the hole of the workpiece. Therefore, when the hydraulic cylinder drives the pressure block to move, the workpiece can be quickly centered, avoiding the impact of the gear hobbing accuracy due to the axis offset. After centering, as the support spring contracts, the workpiece can be pressed tightly on the pad, which helps to improve the stability of the workpiece during the processing.

[0016] 2. This utility model, through the setting of the locking component, can control the pressure in the hydraulic channel by connecting the hydraulic channel to an external hydraulic pump. When the pressure increases, it can push the piston rod, causing the clamping block to rotate around the pivot, thereby clamping the workpiece. When the workpiece needs to be disassembled, the pressure inside the hydraulic channel is reduced. At this time, the return spring will push the top column under the limit of the sealing plug and the fixed cylinder, causing the clamping block to slowly release the workpiece. Then, the support spring can push the workpiece out through the floating pin, thereby improving the convenience of workpiece disassembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a floating positioning fixture for a gear hobbing machine according to the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the correction component of a floating positioning fixture for a gear hobbing machine according to the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the reset component of a floating positioning fixture for a gear hobbing machine according to the present invention.

[0020] In the diagram: 1. Fixed base; 2. Sealing cylinder; 3. End cap; 4. Correction assembly; 401. Inner bushing; 402. Pad; 403. Bottom cover; 404. Support spring; 405. Floating pin; 406. Guide part; 5. Workpiece; 6. Clamping assembly; 601. Pressure block; 602. Slide; 603. Hydraulic cylinder; 604. Fixed shell; 7. Locking assembly; 701. Hydraulic flow channel; 702. Piston rod; 703. Clamping block; 704. Rotating shaft; 8. Reset assembly; 801. Fixed cylinder; 802. Sealing plug; 803. Reset spring; 804. Top column. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figure 1 and Figure 2 As shown, a floating positioning fixture for a gear hobbing machine includes a fixed base 1 and a correction assembly 4. A sealing cylinder 2 is disposed inside the fixed base 1, and an end cap 3 is mounted on the top of the sealing cylinder 2. The correction assembly 4 is disposed inside the sealing cylinder 2 and includes an inner bushing 401, a pad 402, a bottom cover 403, a support spring 404, a floating pin 405, and a guide portion 406. The inner bushing 401 is disposed inside the sealing cylinder 2, and the pad 402 is connected to the top of the inner bushing 401. The bottom cover 403 is disposed at the bottom of the inner bushing 401, and the support spring 404 is connected to the top of the bottom cover 403. The floating pin 405 is connected to the top of the support spring 404, and a guide portion 406 is provided on the top of the floating pin 405. The 06 component serves as a guide. The top of the pad 402 is provided with the workpiece 5, and the top of the workpiece 5 is connected to the clamping component 6. During the clamping process, the workpiece 5 can be pressed tightly onto the pad 402, which helps to improve the stability of the workpiece 5 during processing. The clamping component 6 includes a pressure block 601 and a slide 602. The top of the workpiece 5 is provided with the pressure block 601, and the slide 602 is fixed to one side of the pressure block 601. The clamping component 6 also includes a hydraulic cylinder 603 and a fixed shell 604. The end of the slide 602 is connected to the hydraulic cylinder 603, and the end of the hydraulic cylinder 603 is fixed to the fixed shell 604. The fixed shell 604 is slidably connected to the slide 602. When the hydraulic cylinder 603 is activated, it drives the pressure block 601 to press the workpiece 5.

[0023] like Figure 2 and Figure 3As shown, a locking assembly 7 is provided inside the fixed base 1. The locking assembly 7 includes a hydraulic channel 701 and a piston rod 702. The hydraulic channel 701 is opened at one end of the fixed base 1 and is connected to one end of the sealing cylinder 2. The piston rod 702 is slidably connected inside one end of the sealing cylinder 2. The locking assembly 7 also includes a clamping block 703 and a rotating shaft 704. The clamping block 703 is slidably connected to the top of the piston rod 702, and the rotating shaft 704 is housed inside the lower end of the clamping block 703. The rotating shaft 704 is rotatably connected to the inner bushing 401. Since the hydraulic channel 701 is connected to an external hydraulic pump, the pressure inside the hydraulic channel 701 can be controlled. When the pressure increases, it pushes the piston rod 702, causing the clamping block 703 to rotate around the rotating shaft 704. The end cap 3 is used to clamp the workpiece 5. A reset assembly 8 is provided inside one end of the end cap 3. The reset assembly 8 includes a fixed cylinder 801 and a sealing plug 802. The fixed cylinder 801 is fixed inside one end of the end cap 3, and the sealing plug 802 is threadedly connected to the upper end of the fixed cylinder 801. The reset assembly 8 also includes a reset spring 803 and a top post 804. The bottom of the sealing plug 802 is connected to the reset spring 803, and the bottom of the reset spring 803 is provided with a top post 804. The top post 804 is slidably connected to the fixed cylinder 801. When the pressure inside the hydraulic channel 701 decreases, the reset spring 803 will push the top post 804 under the limit of the sealing plug 802 and the fixed cylinder 801, so that the clamping block 703 slowly releases the workpiece 5. At this time, the support spring 404 can push the workpiece 5 out through the floating pin 405.

[0024] In summary, when using this floating positioning fixture for the gear hobbing machine, firstly according to... Figure 1 , Figure 2 and Figure 3 The structure shown involves first placing the fixed base 1 and the fixed housing 604 on the machine tool, then placing the workpiece 5 above the pad 402. At this point, the lower end of the workpiece 5 can contact the top of the floating pin 405. Next, the hydraulic cylinder 603 is activated, causing it to drive the pressure block 601 to press the workpiece 5. The tapered guide portion 406 guides the hole portion of the workpiece 5, quickly centering the workpiece 5. Subsequently, as the support spring 404 contracts, the workpiece 5 is pressed firmly onto the pad 402. Then, since the hydraulic flow channel 701 is connected to an external hydraulic pump, the hydraulic flow channel can be controlled. The pressure inside 701 increases, and when the pressure increases, it can push the piston rod 702, causing the clamping block 703 to rotate around the pivot 704, thereby clamping the workpiece 5. Finally, when the workpiece 5 needs to be removed after processing, the clamping assembly 6 releases the workpiece 5, and then controls the pump body to reduce the pressure inside the hydraulic channel 701. At this time, the return spring 803 will push the top column 804 under the limit of the sealing plug 802 and the fixed cylinder 801, so that the clamping block 703 slowly releases the workpiece 5. At this time, the support spring 404 can push the workpiece 5 out through the floating pin 405, making it easy to disassemble.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A floating positioning fixture for a gear hobbing machine, comprising a fixed base (1) and a correction assembly (4), characterized in that, The fixed base (1) is provided with a sealing cylinder (2) inside, and an end cap (3) is provided on the top of the sealing cylinder (2). The correction component (4) is provided inside the sealing cylinder (2). The correction component (4) includes an inner sleeve (401), a pad (402), a bottom cover (403), a support spring (404), a floating pin (405), and a guide part (406). The inner sleeve (401) is provided inside the sealing cylinder (2), and a pad (402) is connected to the top of the inner sleeve (401). The bottom cover (403) is provided at the bottom of the inner sleeve (401), and a support spring (404) is connected to the top of the bottom cover (403). A floating pin (405) is connected to the top of the support spring (404), and a guide part (406) is provided on the top of the floating pin (405).

2. The floating positioning fixture for a gear hobbing machine according to claim 1, characterized in that, The top of the pad (402) is provided with a workpiece (5), and the top of the workpiece (5) is connected to a clamping assembly (6).

3. A floating positioning fixture for a gear hobbing machine according to claim 2, characterized in that, The clamping assembly (6) includes a pressure block (601) and a slide (602). The top of the workpiece (5) is provided with a pressure block (601), and a slide (602) is fixed on one side of the pressure block (601).

4. A floating positioning fixture for a gear hobbing machine according to claim 3, characterized in that, The clamping assembly (6) further includes a hydraulic cylinder (603) and a fixed shell (604). The end of the slide (602) is connected to the hydraulic cylinder (603), and the end of the hydraulic cylinder (603) is fixed to the fixed shell (604). The fixed shell (604) is slidably connected to the slide (602).

5. A floating positioning fixture for a gear hobbing machine according to claim 1, characterized in that, The fixed base (1) is provided with a locking assembly (7). The locking assembly (7) includes a hydraulic flow channel (701) and a piston rod (702). The fixed base (1) has a hydraulic flow channel (701) at one end, and the hydraulic flow channel (701) is connected to the interior of one end of the sealing cylinder (2). The piston rod (702) is slidably connected to the interior of one end of the sealing cylinder (2).

6. A floating positioning fixture for a gear hobbing machine according to claim 5, characterized in that, The locking assembly (7) further includes a clamping block (703) and a rotating shaft (704). The top of the piston rod (702) is slidably connected to the clamping block (703), and the lower end of the clamping block (703) is internally provided with the rotating shaft (704), and the rotating shaft (704) is rotatably connected to the inner bushing (401).

7. A floating positioning fixture for a gear hobbing machine according to claim 1, characterized in that, A reset assembly (8) is provided inside one end of the end cap (3). The reset assembly (8) includes a fixed cylinder (801) and a sealing plug (802). The fixed cylinder (801) is fixed inside one end of the end cap (3), and the sealing plug (802) is threadedly connected to the upper end of the fixed cylinder (801).

8. A floating positioning fixture for a gear hobbing machine according to claim 7, characterized in that, The reset assembly (8) further includes a reset spring (803) and a top post (804). The bottom of the sealing plug (802) is connected to the reset spring (803), and the bottom of the reset spring (803) is provided with a top post (804), and the top post (804) is slidably connected to the fixed cylinder (801).

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