Special gearbox for cold cutting flying saw machine

Abstract

The present invention relates to a gearbox for cold-cut flying saw machines. Specifically, a first-stage small helical gear is provided on the input shaft, a first-stage large helical gear is provided on the main shaft body of the bevel gear shaft, the first-stage large helical gear meshes with the first-stage small helical gear, a large bevel gear and a third-stage small helical gear are provided on the third-stage shaft, the large bevel gear meshes with the small bevel gear, the second end of the output shaft extends out of the box body, the axial direction of the output shaft is parallel to the axial direction of the third-stage shaft, a third-stage large helical gear is provided on the output shaft, the third-stage large helical gear meshes with the third-stage small helical gear, and two tapered roller bearings, deep groove ball bearings and NN double-row cylindrical roller bearings are also provided on the output shaft. The present invention adjusts the internal gears and the bearings installed on the output shaft, effectively reducing the overall noise of the gearbox, improving the accuracy of the gearbox, and thus improving the service life of the gearbox. At the same time, the saw blade runs more stably, correspondingly improving the service life of the saw blade, and the section smoothness is excellent.

Description

Technical Field

[0001] The invention relates to the field of cold-cut flying saw machines, in particular to a special gear box for cold-cut flying saw machines. Background Art

[0002] Cold-cut flying saw is a kind of cutting equipment. The gear box of traditional cold-cut flying saw is noisy, and the service life of cold-cut flying saw blade is short and the smoothness of the cut surface is poor. Summary of the invention

[0003] Based on this, a gear box dedicated to a cold-cut flying saw machine is provided. The gear box has low noise, can increase the service life of the saw blade, and has good cut surface smoothness.

[0004] A gear box for cold-cut flying saw machine, comprising a box body and a box cover, and also comprising:

[0005] An input shaft is arranged in the housing and is provided with a first-stage small helical gear.

[0006] A bevel gear shaft, wherein the bevel gear shaft is arranged in a housing, the axial direction of the bevel gear shaft is parallel to the axial direction of the input shaft, the bevel gear shaft comprises a main shaft body and a small bevel gear arranged at the end of the main shaft body, a primary large bevel gear is arranged on the main shaft body of the bevel gear shaft, and the primary large bevel gear is meshed with the primary small bevel gear,

[0007] The third-stage shaft is arranged in the box, the axial direction of the third-stage shaft is perpendicular to the axial direction of the bevel gear shaft, and a large bevel gear and a third-stage small bevel gear are arranged on the third-stage shaft, and the large bevel gear is meshed with the small bevel gear.

[0008] An output shaft, wherein the first end of the output shaft is disposed in the housing, the second end of the output shaft extends out of the housing, the axial direction of the output shaft is parallel to the axial direction of the three-stage shaft, and a three-stage large helical gear is disposed on the output shaft, and the three-stage large helical gear is meshed with the three-stage small helical gear.

[0009] Two tapered roller bearings are also arranged at intervals on the output shaft, the three-stage large helical gear is located between the two tapered roller bearings, the two tapered roller bearings are respectively a first tapered roller bearing and a second tapered roller bearing, the first tapered roller bearing is located at the first end of the output shaft, a deep groove ball bearing is arranged on the side of the first tapered roller bearing away from the three-stage large helical gear, and the deep groove ball bearing is installed on the output shaft, and an NN double-row cylindrical roller bearing is arranged on the side of the second tapered roller bearing away from the three-stage large helical gear, and the NN double-row cylindrical roller bearing is installed on the output shaft.

[0010] Compared with the traditional gearbox, the gearbox of the present invention has adjusted the internal transmission gears and the bearings installed on the output shaft, which effectively reduces the overall noise of the gearbox, improves the accuracy of the gearbox, reduces the output shaft runout to 7 threads, reduces the output shaft clearance swing to 6 threads, and thus increases the service life of the gearbox. At the same time, the saw blade runs more stably, which correspondingly increases the service life of the saw blade, and the section smoothness is excellent.

[0011] In one of the embodiments, a plurality of deep groove ball bearings are mounted on the input shaft, and a first oil seal is disposed at the end of the input shaft.

[0012] In one of the embodiments, a plurality of tapered roller bearings are mounted on the bevel gear shaft.

[0013] In one of the embodiments, a plurality of tapered roller bearings are mounted on the tertiary shaft.

[0014] In one of the embodiments, an output sleeve is provided between the three-stage large helical gear and the first tapered roller bearing, and the output sleeve is sleeved on the output shaft.

[0015] In one of the embodiments, a first spacer sleeve is provided in the gap between the first tapered roller bearing, the housing and the deep groove ball bearing.

[0016] In one of the embodiments, an output cover is disposed on the outer side of the NN double-row cylindrical roller bearing, and a second oil seal is disposed between the output cover and the output shaft.

[0017] In one of the embodiments, a second spacer sleeve is provided in the gap between the NN double-row cylindrical roller bearing, the housing and the second tapered roller bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a diagram showing the internal structure of a gearbox specially used for cold-cut flying saw machines according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Cross-sectional view in the cc direction.

[0020] in:

[0021] 101, box body 102, box cover 103, input shaft

[0022] 104, bevel gear shaft 105, tertiary shaft 106, output shaft

[0023] 107, first-stage small helical gear 108, first-stage large helical gear 109, small bevel gear

[0024] 110, large bevel gear 111, three-stage small helical gear 112, three-stage large helical gear

[0025] 113. 6012 deep groove ball bearing 114. First tapered roller bearing

[0026] 115. Second tapered roller bearing

[0027] 116, NN double-row cylindrical roller bearing 117, first spacer sleeve 118, second spacer sleeve

[0028] 119, output shaft sleeve 120, output cover 121, second oil seal

[0029] 122. Output shaft cover 123. Three-stage shaft cover 124. 30307 tapered roller bearing

[0030] 125. Third-level bushing 126. 6212 deep groove ball bearing 127. First oil seal

[0031] 128. Input flange 129. Round nut DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a gear box for cold-cut flying saw machine, including a box body 101 and a box cover 102, wherein the box cover 102 is connected to the box body 101, and further includes:

[0036] An input shaft 103 is disposed in the housing 101 and is provided with a primary small helical gear 107.

[0037] The bevel gear shaft 104 is arranged in the housing 101. The axial direction of the bevel gear shaft 104 is parallel to the axial direction of the input shaft 103. The bevel gear shaft 104 includes a main shaft body and a small bevel gear 109 arranged at the end of the main shaft body. The main shaft body of the bevel gear shaft 104 is provided with a primary large bevel gear 108, and the primary large bevel gear 108 is meshed with the primary small bevel gear 107.

[0038] The tertiary shaft 105 is arranged in the housing 101, and the axial direction of the tertiary shaft 105 is perpendicular to the axial direction of the bevel gear shaft 104. A large bevel gear 110 and a tertiary small bevel gear 111 are arranged on the tertiary shaft 105, and the large bevel gear 110 is meshed with the small bevel gear 109.

[0039] An output shaft 106, wherein a first end of the output shaft 106 is disposed in the housing 101, and a second end of the output shaft 106 extends out of the housing 101, and an axial direction of the output shaft 106 is parallel to an axial direction of the tertiary shaft 105, and a tertiary large bevel gear 112 is disposed on the output shaft 106, and the tertiary large bevel gear 112 is meshed with the tertiary small bevel gear 111,

[0040] Two tapered roller bearings are also arranged at intervals on the output shaft 106, and the three-stage large bevel gear 112 is located between the two tapered roller bearings. The two tapered roller bearings are respectively a first tapered roller bearing 114 and a second tapered roller bearing 115. The first tapered roller bearing 114 is located at the first end of the output shaft 106, and a deep groove ball bearing is arranged on the side of the first tapered roller bearing 114 away from the three-stage large bevel gear 112, and the deep groove ball bearing is installed on the output shaft 106. The second tapered roller bearing 115 is arranged on the side away from the three-stage large bevel gear 112 with an NN double-row cylindrical roller bearing 116, and the NN double-row cylindrical roller bearing 116 is installed on the output shaft 106.

[0041] Compared with the traditional gearbox, the gearbox of the present invention has adjusted the gears of the internal transmission, using helical gears in the first stage, bevel gears in the second stage, and helical gears in the third stage. At the same time, the bearings installed on the output shaft 106 have been adjusted to withstand high-frequency use and reduce shaft clearance. The present invention effectively reduces the overall noise of the gearbox, improves the accuracy of the gearbox, reduces the shaft runout of the output shaft to 7 wires, and reduces the left and right swing of the output shaft clearance to 6 wires, thereby increasing the service life of the gearbox. At the same time, the operation of the saw blade is more stable, which correspondingly increases the service life of the saw blade, and the section smoothness is excellent.

[0042] Specifically, each of the above gears can be made of 20CrMnTi material after heat treatment, and the tooth surface hardness reaches HRC58-62.

[0043] Specifically, the first tapered roller bearing 114 and the second tapered roller bearing 115 may be 32012 tapered roller bearings. The deep groove ball bearing is a 6012 deep groove ball bearing 113. The NN double-row cylindrical roller bearing 116 is a NN3012 double-row cylindrical roller bearing.

[0044] Specifically, when in use, the motor is connected to the housing 101 through the flange to provide power to the gearbox. The input shaft 103 drives the primary small bevel gear 107 to rotate, the primary small bevel gear 107 drives the primary large bevel gear 108 to rotate, the primary large bevel gear 108 drives the bevel gear shaft 104 to rotate, and then drives the small bevel gear 109 to rotate, the small bevel gear 109 drives the large bevel gear 110 to rotate, and then drives the tertiary shaft 105 to rotate, the tertiary shaft 105 drives the tertiary small bevel gear 111 to rotate, the tertiary small bevel gear 111 drives the tertiary large bevel gear 112 to rotate, and then drives the output shaft 106 to rotate, and the rotation of the output shaft 106 allows the saw blade mounted thereon to rotate to achieve the purpose of sawing.

[0045] In this embodiment, a plurality of deep groove ball bearings are mounted on the input shaft 103, and a first oil seal 127 is disposed at the end of the input shaft 103. Figure 1 As shown, three deep groove ball bearings are installed on the input shaft 103 , and the three deep groove ball bearings are 6212 deep groove ball bearings 126 .

[0046] In this embodiment, a plurality of tapered roller bearings are mounted on the bevel gear shaft 104. Figure 1 As shown, two tapered roller bearings are mounted on the bevel gear shaft 104. The tapered roller bearings are 30307 tapered roller bearings 124.

[0047] In this embodiment, a plurality of tapered roller bearings are mounted on the third-stage shaft 105. Figure 2 As shown, tapered roller bearings are installed at both ends of the tertiary shaft 105. The tapered roller bearings are 30307 tapered roller bearings 124. At the same time, a tertiary shaft sleeve 125 is arranged on the tertiary shaft 105 between the large bevel gear 110 and the tapered roller bearings adjacent to the large bevel gear 110. A tertiary shaft cover 123 connected to the housing 101 is arranged on the outer side of one end of the tertiary shaft 105 away from the large bevel gear 110.

[0048] In this embodiment, an output shaft sleeve 119 is disposed between the three-stage large bevel gear 112 and the first tapered roller bearing 114 , and the output shaft sleeve 119 is sleeved on the output shaft 106 .

[0049] In this embodiment, an output shaft cover 122 is disposed on the outer side of the first end of the output shaft 106 , and the output shaft cover 122 is connected to the box body 101 .

[0050] In this embodiment, a first spacer sleeve 117 is provided in the gap between the first tapered roller bearing 114, the housing 101 and the deep groove ball bearing.

[0051] In this embodiment, an output cover 120 is disposed outside the NN double-row cylindrical roller bearing 116 . The output cover 120 is connected to the housing 101 . A second oil seal 121 is disposed between the output cover 120 and the output shaft 106 .

[0052] In this embodiment, a second spacer sleeve 118 is provided in the gap between the NN double-row cylindrical roller bearing 116 , the housing 101 and the second tapered roller bearing 115 .

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A gear box for cold-cut flying saw machine, comprising a box body and a box cover, characterized in that: Also includes: An input shaft is arranged in the housing, and a first-stage small helical gear is arranged on the input shaft. A bevel gear shaft, wherein the bevel gear shaft is arranged in a housing, the axial direction of the bevel gear shaft is parallel to the axial direction of the input shaft, the bevel gear shaft comprises a main shaft body and a small bevel gear arranged at the end of the main shaft body, a primary large bevel gear is arranged on the main shaft body of the bevel gear shaft, and the primary large bevel gear is meshed with the primary small bevel gear, The third-stage shaft is arranged in the box, the axial direction of the third-stage shaft is perpendicular to the axial direction of the bevel gear shaft, and a large bevel gear and a third-stage small bevel gear are arranged on the third-stage shaft, and the large bevel gear is meshed with the small bevel gear. An output shaft, wherein the first end of the output shaft is disposed in the housing, the second end of the output shaft extends out of the housing, the axial direction of the output shaft is parallel to the axial direction of the three-stage shaft, and a three-stage large helical gear is disposed on the output shaft, and the three-stage large helical gear is meshed with the three-stage small helical gear. Two tapered roller bearings are also arranged at intervals on the output shaft, the three-stage large helical gear is located between the two tapered roller bearings, the two tapered roller bearings are respectively a first tapered roller bearing and a second tapered roller bearing, the first tapered roller bearing is located at the first end of the output shaft, a deep groove ball bearing is arranged on the side of the first tapered roller bearing away from the three-stage large helical gear, and the deep groove ball bearing is installed on the output shaft, and an NN double-row cylindrical roller bearing is arranged on the side of the second tapered roller bearing away from the three-stage large helical gear, and the NN double-row cylindrical roller bearing is installed on the output shaft.

2. The gearbox for cold-cut flying saw according to claim 1, characterized in that: A plurality of deep groove ball bearings are installed on the input shaft, and a first oil seal is arranged at the end of the input shaft.

3. The gearbox for cold-cut flying saw according to claim 1, characterized in that: A plurality of tapered roller bearings are installed on the bevel gear shaft.

4. The gearbox for cold-cut flying saw according to claim 1, characterized in that: A plurality of tapered roller bearings are installed on the tertiary shaft.

5. The gear box for cold-cut flying saw machine according to claim 1, characterized in that: An output shaft sleeve is arranged between the three-stage large helical gear and the first tapered roller bearing, and the output shaft sleeve is sleeved on the output shaft.

6. The gear box for cold-cut flying saw machine according to claim 1, characterized in that: A first spacing sleeve is arranged in the gap between the first tapered roller bearing, the housing and the deep groove ball bearing.

7. The gear box for cold-cut flying saw machine according to claim 1, characterized in that: An output cover is arranged on the outer side of the NN double-row cylindrical roller bearing, and a second oil seal is arranged between the output cover and the output shaft.

8. The gear box for cold-cut flying saw machine according to claim 1, characterized in that: A second spacing sleeve is arranged in the gap between the NN double-row cylindrical roller bearing, the housing and the second tapered roller bearing.

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