Supporting structure and supporting tool

Abstract

A supporting structure and a supporting tool belong to the technical field of boring machine spindle parts, the supporting structure comprises the supporting tool, a spindle sleeve and a boring bar, the supporting tool comprises a main body, a spacer bush and a gland, the main body is of a hollow structure, a fixing hole is formed in one side of the main body, and a first step and a second step are arranged on the inner wall of the other side of the main body; the spacer bush is installed on the first step, the gland is fixed to the second step and covers the spacer bush, the boring rod is rotationally installed on the main shaft kit and penetrates through the main body, the spacer bush and the gland, and the main body is fixed to the end face of the main shaft kit through the fixing hole. The boring rod supporting tool has the advantages that through the supporting tool, the supporting length of the boring rod is increased, when the boring rod machines a deep hole or other conditions that a main shaft needs to stretch out from a long distance, the supporting force provided by the supporting tool can reduce the droop tolerance of the front end of the boring rod, and the rigidity of the boring rod is enhanced; the machining precision when the end face is milled or the cutting depth is large is effectively improved; and the service life of the boring rod is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of main shaft parts of boring machines, in particular to a supporting structure and a supporting tooling. Background Art

[0002] At present, when a boring machine is processing a workpiece, as the W-axis stroke increases, the droop tolerance of the front end of the boring bar increases, thus affecting the processing accuracy of the workpiece and the service life of the boring bar. This is mainly caused by the structure of the boring machine. In the structural design of the boring machine, in order to process the workpiece in a larger range, the W-axis stroke is generally designed to be larger. However, as the boring bar overhang increases, the front end of the boring bar droops more due to its own gravity, thus affecting the processing accuracy. At the same time, the larger the boring bar overhang, the worse the boring bar rigidity will be. When the boring cutter rotates on the inner surface of the workpiece, it is easy to cause bending and vibration, thus affecting the workpiece processing accuracy and the service life of the boring bar. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a support structure, and its technical solution is as follows:

[0004] A supporting structure includes a supporting tool, a spindle kit and a boring bar, the supporting tool includes a main body, a spacer sleeve and a pressure cover, the main body is a hollow structure, a fixing hole is provided on one side of the main body, a first step and a second step are provided on the inner wall of the other side of the main body, the spacer sleeve is installed on the first step, the pressure cover is fixed to the second step, the pressure cover covers the spacer sleeve, the boring bar is rotatably installed on the spindle kit, the boring bar passes through the main body, the spacer sleeve and the pressure cover, and the main body is fixed to the end face of the spindle kit through the fixing hole.

[0005] Furthermore, the main body is provided with an oil inlet hole, the spacer sleeve is provided with an oil groove, and the oil inlet hole is communicated with the oil groove.

[0006] Furthermore, the supporting tooling also includes an oil inlet, and the oil inlet is installed on the oil inlet hole.

[0007] Furthermore, the oil inlet is provided with an oil channel, and the oil channel is connected to the oil inlet hole.

[0008] Furthermore, the supporting tooling is also provided with a sealing ring, which is installed on the second step and is located between the spacer and the gland.

[0009] Furthermore, the supporting tooling includes a lifting ring, and the lifting ring is fixed to the outer wall of the main body.

[0010] Furthermore, the inner wall of the main body is provided with a plurality of grooves for reducing weight and noise.

[0011] Furthermore, the main body is provided with an avoidance space, and the avoidance space is recessed inwardly and avoids the extension direction of the fixing hole.

[0012] A supporting tooling includes a main body, a spacer sleeve and a pressure cover. The main body is configured as a hollow structure for accommodating a boring bar. A fixing hole for fixing to a spindle kit is provided on one side of the main body. A first step and a second step are provided on the inner wall on the other side of the main body. The spacer sleeve is installed on the first step, the pressure cover is fixed on the second step, and the pressure cover covers the spacer sleeve.

[0013] Furthermore, the supporting tooling also includes an oil inlet and a sealing ring, the spacer is provided with an oil groove, the oil inlet is communicated with the oil groove, and the sealing ring is arranged on the second step and located between the spacer and the pressure cover.

[0014] The utility model is beneficial in that the supporting length of the boring bar is extended by the supporting fixture. When the boring bar is processing deep holes or other situations where the spindle needs to be extended a long distance, the supporting force provided by the supporting fixture can reduce the droop tolerance of the front end of the boring bar, enhance the rigidity of the boring bar, and effectively improve the processing accuracy when milling the end face or when the cutting amount is large, as well as the service life of the boring bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the support structure of the utility model;

[0016] Figure 2 for Figure 1 A three-dimensional diagram of the supporting tooling;

[0017] Figure 3 for Figure 1 Structural exploded view of the support tooling;

[0018] Figure 4 for Figure 1 Partial structure diagram of the supporting tooling:

[0019] Figure 5 for Figure 1 A cross-sectional view of the support tooling.

[0020] In the figure:

[0021] 1. Support tooling; 11. Main body; 111. Fixing hole; 112. Fixing screw; 113. First step; 114. Second step; 115. Oil inlet hole; 116. Groove; 117. Lifting ring fixing hole; 118. Avoidance space; 12. Spacer; 121. Oil groove; 13. Pressure cover; 14. Sealing ring; 15. Oil inlet; 151. Oil channel; 16. Lifting ring; 7. Spindle kit; 8. Boring bar. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / and" used herein includes any and all combinations of one or more related listed items.

[0024] The following is an example and combined with the attached Figure 1-5 The utility model is described in further detail.

[0025] A supporting structure comprises a supporting tool 1, a spindle kit 7 and a boring bar 8.

[0026] The boring bar 8 is rotatably mounted on the spindle assembly 7 .

[0027] The supporting tool 1 includes a main body 11 , a spacer sleeve 12 , a gland 13 , a sealing ring 14 , an oil inlet 15 and a lifting ring 16 .

[0028] The main body 11 is a hollow structure. A fixing hole 111 and an escape space 118 are provided on one side of the main body 11. A first step 113, a second step 114 and an oil inlet hole 115 are provided on the other side of the main body 11. The first step 113 and the second step 114 are provided on the inner wall of the main body 11. The inner wall of the main body 11 is also provided with a plurality of grooves 116. Specifically, in this embodiment, the number of grooves 116 is six, which is used to reduce the wall thickness, reduce the weight of the supporting tooling 1, and reduce noise. The outer wall of the main body 11 is also provided with a lifting ring fixing hole 117 for installing the lifting ring 16.

[0029] The spacer 12 is provided with an oil groove 121 for guiding oil to lubricate the boring bar 8 and reduce friction. The oil inlet hole 115 is connected to the oil groove 121 so that the oil can enter the interior of the supporting fixture 1 to lubricate the boring bar 8.

[0030] The sealing ring 14 is a dustproof sealing ring to prevent oil from overflowing and sand and dust from entering the interior of the device.

[0031] The oil inlet 15 is provided with an oil passage 151 . The oil inlet 15 is installed on the oil inlet hole 115 . The oil passage 151 is communicated with the oil inlet hole 115 . The oil inlet 15 is used to control the amount of oil entering.

[0032] The installation process of the support structure of the utility model.

[0033] First, install the support fixture 1, install the spacer 12 on the first step 113, fix the gland 13 on the second step 114, install the sealing ring 14 on the second step 114 and between the spacer 12 and the sealing ring 14, and the gland 13 is used to seal the spacer 12 and the sealing ring 14. Install the lifting ring 16 on the lifting ring fixing hole 117, and the oil inlet 15 on the oil inlet hole 115, so that the boring bar 8 passes through the main body 11, the spacer 12, the gland 13 and the sealing ring 14, and the support fixture 1 is fixed to the end surface of the spindle kit 7 through the fixing hole 111 and the fixing screw 112.

[0034] The utility model is beneficial in that the support length of the boring bar 8 is extended by the support fixture 1. When the boring bar 8 processes deep holes or other situations where the spindle needs to be extended a long distance, the support force provided by the support fixture 1 can reduce the droop tolerance of the front end of the boring bar 8, enhance the rigidity of the boring bar 8, and effectively improve the processing accuracy when milling the end face or when the cutting amount is large, as well as the service life of the boring bar 8.

[0035] The above embodiment only expresses one implementation method of the utility model, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiment based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.

Claims

1. A support structure, comprising a support fixture, a spindle kit and a boring bar, characterized in that: The supporting tooling includes a main body, a spacer sleeve and a pressure cover. The main body is a hollow structure. A fixing hole is provided on one side of the main body. A first step and a second step are provided on the inner wall of the other side of the main body. The spacer sleeve is installed on the first step. The pressure cover is fixed on the second step. The pressure cover covers the spacer sleeve. The boring bar is rotatably installed on the spindle kit. The boring bar passes through the main body, the spacer sleeve and the pressure cover. The main body is fixed to the end face of the spindle kit through the fixing hole.

2. The support structure according to claim 1, characterized in that: The main body is provided with an oil inlet hole, the spacer is provided with an oil groove, and the oil inlet hole is communicated with the oil groove.

3. The support structure according to claim 2, characterized in that: The supporting fixture further comprises an oil inlet, and the oil inlet is installed on the oil inlet hole.

4. The support structure according to claim 3, characterized in that: The oil inlet is provided with an oil passage, and the oil passage is connected with the oil inlet hole.

5. The support structure according to claim 2, characterized in that: The supporting tool is also provided with a sealing ring, which is installed on the second step and is located between the spacer and the gland.

6. The support structure according to claim 1, characterized in that: The supporting tooling comprises a lifting ring, and the lifting ring is fixed to the outer wall of the main body.

7. The support structure according to claim 1, characterized in that: The inner wall of the main body is provided with a plurality of grooves for reducing weight and noise.

8. The support structure according to claim 1, characterized in that: The main body is provided with an avoidance space, which is recessed inwards and avoids the extension direction of the fixing hole.

9. A supporting tool, characterized in that: The supporting tooling includes a main body, a spacer sleeve and a pressure cover. The main body is provided with a hollow structure for accommodating a boring bar. One side of the main body is provided with a fixing hole for fixing to a spindle kit. The inner wall on the other side of the main body is provided with a first step and a second step. The spacer sleeve is installed on the first step, the pressure cover is fixed on the second step, and the pressure cover covers the spacer sleeve.

10. The supporting tool according to claim 9, characterized in that: The supporting tooling also includes an oil inlet and a sealing ring. The spacer is provided with an oil groove. The oil inlet is communicated with the oil groove. The sealing ring is arranged on the second step and located between the spacer and the gland.

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