Machining clamp for high-precision thin-wall spiral bevel gear

Abstract

The utility model relates to the technical field of machining, in particular to a machining clamp for a high-precision thin-wall spiral bevel gear, which comprises a pull rod and a sleeve sleeved on the pull rod, the sleeve can be connected with a machine tool spindle, the pull rod can be connected with a hydraulic pneumatic cylinder of a machine tool, and the sleeve is provided with a connecting bolt, a pull plate and a lubricating oil groove. The connecting bolt and the pulling plate are fixedly connected to the two ends of the pulling rod respectively, the lubricating oil groove is formed in the inner side of the connecting bolt and the inner side of the pulling plate, the tensioning plate is arranged between the pulling plate and the end face of the sleeve, a center hole is formed in the center of the tensioning plate, the tensioning plate is arranged on the pulling rod in a sleeving mode through the center hole, and an annular baffle is arranged at the end, close to the tensioning plate, of the sleeve. Compared with the prior art, the thin-wall spiral bevel gear clamping device has the advantages that accurate positioning and clamping of a thin-wall spiral bevel gear can be achieved, deformation in the machining process is avoided, the machining efficiency and quality are improved, and the requirement for high-precision machining is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining technical field, concretely relates to a kind of machining fixture of high-precision thin-wall spiral bevel gear. BACKGROUND

[0002] As Figure 6 The thin-wall spiral bevel gear 10 casting blank shape is complex, precision requirement is very high, processing technology requirement is also more complex, processing difficulty is very big.

[0003] Prior art discloses a kind of clamping tool, and the public number is CN220972158U, including clamping tool body, the bottom of the clamping tool body is equipped with support seat, the lower side of the clamping tool body is connected with connecting block, and connecting shaft is inserted in the inside of connecting block, the inside of the connecting shaft is engaged with plug-in rod, and the other end of plug-in rod is connected with gear, the outside of the gear is equipped with gear ring, and gear ring is connected by support rod and connecting plate. The utility model discloses a connecting block and connecting shaft are provided, the angle of the clamping tool body can be adjusted by the cooperation of the connecting block and the connecting shaft, so that the position of the clamped plastic shell can be adjusted, and the mounting plate and the butt joint rod are provided.

[0004] Although prior art can provide a variety of clamping tool to adapt to different processing needs, but cannot solve the accurate positioning and clamping problem of thin-wall spiral bevel gear in processing process, thin-wall spiral bevel gear is deformed in processing process due to its thin wall thickness, so that the processed parts do not meet the drawing accuracy requirement, in addition, the prior art often needs larger stretching force to ensure the matching strength of part and tool when processing thin-wall spiral bevel gear, but this traditional fixing mode can cause further deformation of part, affect processing quality UTILITY MODEL CONTENTS

[0005] To solve the above technical problems or one of the technical problems in prior art, the utility model discloses a kind of machining fixture of high-precision thin-wall spiral bevel gear, including pull rod and sleeve pipe being set on pull rod, can link machine tool spindle, pull rod can be connected machine tool hydraulic pressure air cylinder, sleeve pipe the pull rod is equipped with connecting bolt, pull plate and lubricating oil groove, the connecting bolt and pull plate are respectively fixed at the both ends of pull rod, the lubricating oil groove is located in the inside of connecting bolt and pull plate, the end surface between pull plate and sleeve pipe is equipped with tensioning plate, the center of the tensioning plate is equipped with center hole, and sleeve pipe is set on pull rod by center hole, the end of sleeve pipe close to tensioning plate is equipped with annular baffle, the annular baffle is fixed at the outer circumferential surface of sleeve pipe, and the tensioning plate is bowl-shaped.

[0006] Further, the pull plate is umbrella-shaped, and the center is equipped with screw hole and coaxially connected with pull plate.

[0007] Further, the outer edge of the tensioning plate is provided with open grooves, and the open grooves are arranged in a circular array.

[0008] Further, the open grooves are filled with soft rubber.

[0009] Further, the outer edge of the outer side surface of the tensioning plate is fixedly connected with a boss.

[0010] Further, the tensioning plate is made of elastic material.

[0011] Compared with the prior art, the effects realized by the utility model are as follows:

[0012] Precise positioning and clamping: the clamp can realize precise positioning and firm clamping of the thin-walled spiral bevel gear through the cooperation of the pull rod and the sleeve and the bowl-shaped design of the tensioning plate, and this design effectively avoids gear deformation caused by uneven clamping force or inaccurate positioning in the machining process, and ensures machining precision.

[0013] Simple operation: the design of the clamp takes into account the convenience of operation, and through the fixation of the connecting bolt and the pull plate and the setting of the lubricating oil groove, the process of clamping and releasing the workpiece is simplified, and this design enables the operator to quickly and easily clamp and unload the workpiece, thereby improving work efficiency.

[0014] Reduced workpiece deformation: since the thin-walled spiral bevel gear is thin-walled and has poor rigidity, the traditional clamping method is prone to cause workpiece deformation, and the inner hole expansion method adopted by the clamp can effectively reduce deformation in the machining process through the slight deformation of the tensioning plate, thereby ensuring the machining quality of the workpiece.

[0015] Improved machining efficiency: the design of the clamp enables the pull rod to be connected to the machine tool hydraulic pressure cylinder, thereby realizing rapid clamping and releasing, reducing machining preparation time, and at the same time, due to the precise positioning and clamping of the clamp, machining interruption caused by positioning errors or loose clamping is reduced, thereby further improving machining efficiency.

[0016] In summary, precise positioning and clamping of the thin-walled spiral bevel gear can be realized, deformation in the machining process is avoided, machining efficiency and quality are improved, and the demand for high-precision machining is met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structure schematic view of the utility model for installing a workpiece;

[0018] Figure 2 Fig. 2 is a structure schematic view of the utility model; Figure 1

[0019] Figure 3 Fig. 3 is a structure schematic view of the sleeve of the utility model;

[0020] ​Figure 4 It is the structure schematic view of the tensioning plate of the utility model;

[0021] Figure 5 It is the structure schematic view of the tension rod of the utility model;

[0022] Figure 6 It is the structure schematic view of the workpiece of the utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0024] Please refer to Figures 1-6 The technical scheme adopted by the utility model is shown in the drawings: a machining clamp for high-precision thin-wall bevel gear, comprising a tension rod 1 and a sleeve 2 sleeved on the tension rod 1, a connecting bolt 12, a pull plate 11 and a lubricating oil groove 13 are arranged on the tension rod 1, the connecting bolt 12 and the pull plate 11 are respectively fixedly connected at both ends of the tension rod 1, the lubricating oil groove 13 is arranged on the inner side of the connecting bolt 12 and the pull plate 11, a tensioning plate 3 is arranged between the pull plate 11 and the end face of the sleeve 2, a center hole is arranged in the center of the tensioning plate 3, and the tensioning plate 3 is sleeved on the tension rod 1 through the center hole, an annular baffle 21 is arranged on one end of the sleeve 2 close to the tensioning plate 3, the annular baffle 21 is fixedly connected to the outer peripheral surface of the sleeve 2, the tensioning plate 3 is in the shape of a bowl, and the opening is outward.

[0025] Preferably, the pull plate 11 is in the shape of an umbrella, a screw hole is arranged in the center and is coaxially connected with the pull plate 11. A larger supporting area and a precise positioning effect are provided.

[0026] Preferably, an open slot 31 is arranged on the outer edge of the tensioning plate 3, the open slots 31 are multiple and arranged in a circumferential array, and can be uniformly deformed during the tensioning process, so that the contour of the workpiece is more closely fitted.

[0027] Preferably, the open slot 31 is filled with soft rubber, which provides a buffering and sealing effect, prevents impurities such as cutting chips and cooling liquid in the machining process from entering the inside of the clamp, protects the internal structure from pollution and damage, at the same time, the elasticity of the rubber also helps to absorb vibration, reduces noise and vibration in the machining process, and improves the machining quality.

[0028] Preferably, the outer edge of the outer side of the tensioning plate 3 is fixed with a boss 32, which can be used as a positioning feature to ensure the accurate position of the tensioning plate during installation, prevent rotation or deviation, in addition, the boss can also be used as an additional support point to improve the structural strength of the tensioning plate, so that it can remain stable under high load.

[0029] Preferably, the tensioning plate 3 is made of elastic material, and the workpiece is fixed by deforming the tensioning plate 3 through the tensioning plate 11 to achieve the effect of tensioning the workpiece.

[0030] After linking the sleeve with the main shaft of the machine tool, the bowl-shaped tensioning plate is installed on the tensioning rod with the bowl opening facing the tensioning plate; the tensioning rod is passed through the center hole of the bowl-shaped tensioning plate and the sleeve, and is linked with the machine tool hydraulic or driving tensioning device through connecting bolts to complete the installation; the tooling is installed on the positioning center, and the sleeve end face is tightly fitted; the machine tool tensioning device is started; the tensioning rod moves inward to tighten, the tensioning plate is tightly fitted with the outer side of the bowl-shaped tensioning plate, and the middle reference surface on the back side of the bowl-shaped tensioning plate is tightly fitted with the small reference surface in the center of the sleeve; the tensioning rod continues to tighten, and the outer side of the bowl-shaped tensioning plate is deformed inward under stress, and the outer side of the bowl-shaped tensioning plate is provided with an opening slot, and the deformation amount is greater than the deformation amount of the inner hole; therefore, the workpiece inner hole is tensioned inward, thereby moving the workpiece inward to the main shaft direction, and tightly fitting with the annular baffle positioning surface, and the inner hole is also tightly held by the outer side of the bowl-shaped tensioning plate, thereby completing the workpiece clamping, and then the gear machining is carried out; the machine tool release button is started, the tensioning rod moves outward, the bowl-shaped tensioning plate rebounds to release the workpiece, the workpiece is removed, and the machining is completed.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A machining fixture for high-precision thin-walled bevel gears, comprising a pull rod (1) and a sleeve (2) sleeved on the pull rod (1), characterized in that, The pull rod (1) is provided with a connecting bolt (12), a pull plate (11) and a lubricating oil groove (13), the connecting bolt (12) and the pull plate (11) are fixedly connected to the two ends of the pull rod (1) respectively, the lubricating oil groove (13) is arranged on the inner side of the connecting bolt (12) and the pull plate (11), the pull plate (11) and the end face of the sleeve pipe (2) are provided with a tensioning plate (3), the center of the tensioning plate (3) is provided with a center hole, and the tensioning plate (3) is sleeved on the pull rod (1) through the center hole, one end of the sleeve pipe (2) close to the tensioning plate (3) is provided with an annular baffle (21), the annular baffle (21) is fixedly connected to the outer circumferential surface of the sleeve pipe (2), and the tensioning plate (3) is in the shape of a bowl.

2. The machining fixture of a high-precision thin-walled spiral bevel gear according to claim 1, characterized in that, The pull plate (11) is in the shape of an umbrella, is provided with a threaded hole in the center and is coaxially connected with the pull plate (11).

3. The machining fixture of a high-precision thin-walled spiral bevel gear according to claim 1, characterized in that, The outer edge of the tensioning plate (3) is provided with a plurality of open grooves (31) arranged in a circumferential array.

4. The machining fixture of a high-precision thin-walled spiral bevel gear according to claim 3, characterized in that, The open grooves (31) are filled with soft rubber.

5. The machining fixture of a high-precision thin-walled spiral bevel gear according to claim 1, characterized in that, The outer edge of the outer side of the tensioning plate (3) is fixedly connected with a boss (32).

6. The machining fixture of a high-precision thin-walled spiral bevel gear according to claim 1, characterized in that, The tensioning plate (3) is made of an elastic material.

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