Press fitting tool for gear positioning shaft

Abstract

The utility model relates to the technical field of press-fitting tools, and discloses a gear positioning shaft press-fitting tool which comprises a working table, a circular groove is formed in the upper surface of the working table, a gear body is arranged in the circular groove, a key groove is formed in the inner wall of the gear body, and a support is fixedly installed on the upper surface of the working table. The driving motor drives the driving gear to rotate, the driving gear drives the two annular T-shaped sliding blocks to move close to each other through the annular inner rack and the annular outer rack, the two annular T-shaped sliding blocks tightly abut against a key through the cylindrical ejector heads, and the position of the key on a gear shaft can be positioned through the device. By means of the device, the keys do not need to be manually aligned with the key grooves in the inner wall of the gear body one by one, and during batch assembly, the assembly efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of press fitting tool, especially relates to a gear positioning shaft press fitting tool. BACKGROUND

[0002] The gear positioning shaft press fitting tool is usually used in the precise machining and assembly process, especially in the manufacture of gear transmission system, to ensure the correct positioning and pressure assembly of the gear and shaft. The assembly of the gear and shaft usually requires high precision to ensure the smooth operation of the gear transmission system. Any slight deviation may cause poor meshing of the gear and even cause equipment failure. Therefore, the correct positioning and fixation of the gear need to be ensured during the assembly process.

[0003] The existing gear positioning shaft press fitting tool needs to manually align the key on the shaft with the keyway on the gear during use, and then press the shaft and the gear together through the pressure head. The speed of manually aligning the key and the keyway is too slow, which greatly reduces the assembly efficiency during batch assembly. SUMMARY

[0004] The utility model provides a gear positioning shaft press fitting tool to solve the problem in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A gear positioning shaft press fitting tool, comprising a workbench, a circular groove is formed on the upper surface of the workbench, a gear body is arranged in the circular groove, a keyway is formed on the inner wall of the gear body, a support is fixedly installed on the upper surface of the workbench, a first opening is formed through the upper surface of the support, a vertical column is fixedly installed on the lower surface of the support, a limiting ring is fixedly installed at the bottom end of the vertical column, a second opening is formed through the circumferential outer surface of the limiting ring, the second opening is arranged directly below the first opening, a gear shaft is arranged between the inner walls of the second opening and the first opening, a ring-shaped T-shaped sliding groove is formed on the upper surface of the limiting ring, two ring-shaped T-shaped sliding blocks are symmetrically and slidingly installed on the inner wall of the ring-shaped T-shaped sliding groove, a cylindrical jacking head is arranged at one end of the two ring-shaped T-shaped sliding blocks close to the second opening, a fixing groove is formed on the circumferential outer surface of the gear shaft close to the bottom end, a key is arranged on the inner wall of the fixing groove, and the outer surfaces of the two cylindrical jacking heads are respectively located opposite the two sides of the key.

[0007] As a further scheme of the utility model, two installation grooves are symmetrically formed on the inner walls of the opposite sides of the first opening, an opening and closing plate is rotatably installed on the inner wall of each installation groove, a recess matched with the gear shaft is formed on the outer surface of the opening and closing plate close to the gear shaft, and a torsion spring is arranged at the fulcrum of the rotatable installation of the opening and closing plate.

[0008] As a further scheme of the utility model, the other end of one of the annular T-shaped sliding blocks is fixedly installed with an annular internal gear rack, the other end of the other annular T-shaped sliding block is fixedly installed with an annular external gear rack, the bottom wall of the annular T-shaped sliding groove is rotatably installed with a driving gear, the lower surface of the limiting ring is fixedly installed with a driving motor, and the output end of the driving motor is fixedly installed with the rotating center of the driving gear through the bottom wall of the annular T-shaped sliding groove.

[0009] As a further scheme of the utility model, the bottom wall of the circular groove is throughly provided with a circular hole, the inner wall of the circular hole is slidably installed with a positioning head, the circumferential outer surface of the positioning head is provided with a positioning protrusion matched with the key groove, the lower surface of the workbench is fixedly installed with a positioning cylinder, the inner wall of the positioning cylinder close to the bottom end is fixedly installed with a fixed plate, the upper surface of the fixed plate is slidably inserted with a square slide rod, the top end of the square slide rod is fixedly installed with the lower surface of the positioning head, and the inner wall of the positioning cylinder is provided with a positioning sliding groove matched with the positioning protrusion.

[0010] As a further scheme of the utility model, the bottom end of the square slide rod is fixedly installed with a baffle through the lower surface of the fixed plate, the outer surface of the square slide rod is sleeved with a spring, the spring is arranged between the positioning head and the fixed plate, and the positioning head and the inner wall of the gear body are slidably installed.

[0011] As a further scheme of the utility model, the upper surface of the workbench is fixedly installed with a mounting bracket, the lower surface of the mounting bracket is fixedly installed with a hydraulic telescopic pressure head, and the hydraulic telescopic pressure head is arranged directly above the gear shaft.

[0012] As a further scheme of the utility model, the second opening, the first opening and the circular groove are arranged on the same axis.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The driving motor drives the driving gear to rotate, the driving gear drives the two annular T-shaped sliding blocks to move close to each other through the annular internal gear rack and the annular external gear rack, the two annular T-shaped sliding blocks tightly press the key through the cylindrical jacking head, the position of the key on the gear shaft can be positioned through the device, so that the key is aligned with the key groove in the inner wall of the gear body, manual alignment of the key with the key groove in the inner wall of the gear body is not needed, and the assembly efficiency is greatly improved when assembling in batches. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an overall structure schematic view of the gear positioning shaft press fitting tooling proposed in the utility model;

[0016] Figure 2 It is a bottom view structure schematic view of the gear positioning shaft press fitting tooling proposed in the utility model;

[0017] Figure 3 A rear view structure schematic diagram of the gear positioning shaft press fitting tool is provided in the utility model;

[0018] Figure 4 A top view structure schematic diagram of the gear positioning shaft press fitting tool is provided in the utility model;

[0019] Figure 5 A positioning head schematic diagram of the gear positioning shaft press fitting tool is provided in the utility model;

[0020] Figure 6 A limiting ring schematic diagram of the gear positioning shaft press fitting tool is provided in the utility model;

[0021] Figure 7 A positioning cylinder sectional view schematic diagram of the gear positioning shaft press fitting tool is provided in the utility model.

[0022] In the figure: 1, workbench; 101, round groove; 2, mounting frame; 3, hydraulic telescopic pressure head; 4, support; 5, gear shaft; 6, gear body; 7, opening and closing plate; 8, limiting ring; 801, annular T-shaped sliding block; 802, annular T-shaped sliding groove; 803, annular internal rack; 804, annular external rack; 805, driving gear; 9, torsion spring; 10, key; 11, positioning cylinder; 1101, positioning head; 1102, fixed plate; 1103, square sliding rod; 1104, spring; 1105, baffle; 1106, positioning sliding groove; 1107, positioning protrusion; 12, driving motor. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0024] In the description of the utility model, it should be pointed out that the positions or location relationships indicated by the terms "upper", "lower", "internal", "external", "front end", "rear end", "two ends", "one end", "another end" and the like are the positions or location relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in indicating or implying that the devices or elements must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term '' install '', '' set up '', '' connect '' and the like, should do broad sense understanding, for example '' connect '', can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0026] Referring to Figures 1-7 A gear positioning shaft press fitting tool, including workbench 1, the upper surface of workbench 1 is provided with circular groove 101, the inside of circular groove 101 is provided with gear body 6, the inner wall of gear body 6 is provided with keyway, the upper surface of workbench 1 is fixedly installed with support 4, the upper surface of support 4 is provided with first opening, the lower surface of support 4 is fixedly installed with stand, the bottom end of stand is fixedly installed with limit ring 8, the circumferential outer surface of limit ring 8 is provided with second opening, second opening is arranged directly below first opening, gear shaft 5 is arranged between the inner wall of second opening and first opening, the upper surface of limit ring 8 is provided with annular T-shaped sliding groove 802, two annular T-shaped sliding blocks 801 are symmetrically slidably installed on the inner wall of annular T-shaped sliding groove 802, the end of two annular T-shaped sliding blocks 801 close to second opening is provided with cylindrical jacks, the circumferential outer surface close to the bottom end of gear shaft 5 is provided with fixed groove, the inner wall of fixed groove is provided with key 10, the outer surface of the opposite sides of two cylindrical jacks is respectively abutted with key 10, the other end of one of annular T-shaped sliding blocks 801 is fixedly installed with annular internal gear rack 803, the other end of the other annular T-shaped sliding block 801 is fixedly installed with annular external gear rack 804, driving gear 805 is rotatably installed on the bottom wall of annular T-shaped sliding groove 802, driving motor 12 is fixedly installed on the lower surface of limit ring 8, and the output end of driving motor 12 is fixedly installed with the rotation center of driving gear 805 through the bottom wall of annular T-shaped sliding groove 802.

[0027] Driving motor 12 drives driving gear 805 to rotate, and driving gear 805 drives two annular T-shaped sliding blocks 801 to move close to each other through annular internal gear rack 803 and annular external gear rack 804, and two annular T-shaped sliding blocks 801 tightly abut key 10 through cylindrical jacks, the position of key 10 on gear shaft 5 can be positioned through the device, so that key 10 is aligned with the keyway in the inner wall of gear body 6, and the assembly efficiency is greatly improved when assembling in batches.

[0028] Two installation grooves are symmetrically arranged on the inner walls of the opposite sides of the first opening, and the inner walls of the two installation grooves are rotationally installed with the opening and closing plates 7. The outer surface of the opening and closing plate 7 close to the gear shaft 5 is provided with a groove matched with the gear shaft 5, and the rotationally installed fulcrum of the opening and closing plate 7 is provided with a torsion spring 9.

[0029] The operator inserts the gear shaft 5 into the first opening and the second opening, and the key 10 on the gear shaft 5 is inserted towards the position of the second opening. Under the action of the torsion spring 9, the two opening and closing plates 7 limit the position of the gear shaft 5 in the first opening and the second opening.

[0030] In the embodiment, the bottom wall of the circular groove 101 is provided with a circular hole, and the inner wall of the circular hole is slidingly installed with a positioning head 1101. The circumferential outer surface of the positioning head 1101 is provided with a positioning protrusion 1107 matched with the key groove. The lower surface of the workbench 1 is fixedly installed with a positioning cylinder 11, and the inner wall of the positioning cylinder 11 close to the bottom end is fixedly installed with a fixed plate 1102. The upper surface of the fixed plate 1102 is slidingly inserted with a square slide rod 1103, and the top end of the square slide rod 1103 is fixedly installed with the lower surface of the positioning head 1101. The inner wall of the positioning cylinder 11 is provided with a positioning sliding groove 1106 matched with the positioning protrusion 1107. The bottom end of the square slide rod 1103 is fixedly installed with a baffle 1105 penetrating through the lower surface of the fixed plate 1102. The outer surface of the square slide rod 1103 is sleeved with a spring 1104, and the spring 1104 is arranged between the positioning head 1101 and the fixed plate 1102. The positioning head 1101 is slidingly installed with the inner wall of the gear body 6.

[0031] In use, the operator first places the gear body 6 on the inner wall of the circular groove 101, inserts the positioning head 1101 into the inner wall of the gear body 6, and makes the positioning protrusion 1107 located in the key groove of the gear body 6. The position of the gear body 6 is limited by the device, which is convenient for the subsequent assembly of the gear shaft 5.

[0032] In the embodiment, the upper surface of the workbench 1 is fixedly installed with a mounting frame 2, and the lower surface of the mounting frame 2 is fixedly installed with a hydraulic telescopic pressure head 3. The hydraulic telescopic pressure head 3 is arranged directly above the gear shaft 5.

[0033] After the position of the gear shaft 5 is limited, the hydraulic telescopic pressure head 3 is started to make the telescopic end of the hydraulic telescopic pressure head 3 elongated to press the gear shaft 5 into the inner wall of the gear body 6. The pressing length is determined by the elongation length of the hydraulic telescopic pressure head 3.

[0034] In the embodiment, the second opening, the first opening and the circular groove 101 are arranged on the same axis.

[0035] It needs to be explained that, in use, the operator first places the gear body 6 to the inner wall of the circular groove 101, inserts the positioning head 1101 into the inner wall of the gear body 6 when placing, and makes the positioning protrusion 1107 located in the key groove of the gear body 6, so that the position of the gear body 6 is limited through the device, and the gear shaft 5 is convenient for subsequent assembly;

[0036] After placing the gear body 6, the operator inserts the gear shaft 5 into the first opening and the second opening, and makes the key 10 on the gear shaft 5 face the position of the second opening when inserting, and under the action force of the torsion spring 9, the two opening and closing plates 7 limit the position of the gear shaft 5 in the first opening and the second opening, at this time, the bottom end of the gear shaft 5 is attached to the upper surface of the gear body 6, the driving motor 12 drives the driving gear 805 to rotate, the driving gear 805 drives the two ring-shaped T-shaped sliders 801 to move close to each other through the annular inner rack 803 and the annular outer rack 804, and the two ring-shaped T-shaped sliders 801 tightly press the key 10 through the cylindrical top head, the position of the key 10 on the gear shaft 5 can be positioned through the device, so that the key 10 is aligned with the key groove in the inner wall of the gear body 6, and the device does not need to manually align the key 10 with the key groove in the inner wall of the gear body 6 one by one, and when assembling in batches, the assembly efficiency is greatly improved.

[0037] After limiting the position of the gear shaft 5, the hydraulic telescopic pressure head 3 is started to make the telescopic end of the hydraulic telescopic pressure head 3 elongate and press the gear shaft 5 into the inner wall of the gear body 6, and the pressing length is determined by the elongation length of the hydraulic telescopic pressure head 3.

[0038] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A gear positioning shaft press-fitting tool comprising a workbench (1), characterized in that, The upper surface of the workbench (1) is provided with a circular groove (101), the inner wall of the circular groove (101) is provided with a gear body (6), the inner wall of the gear body (6) is provided with a key groove, the upper surface of the workbench (1) is fixedly provided with a support (4), the upper surface of the support (4) is provided with a first opening, the lower surface of the support (4) is fixedly provided with a stand, the bottom end of the stand is fixedly provided with a limiting ring (8), the circumferential outer surface of the limiting ring (8) is provided with a second opening, the second opening is arranged directly below the first opening, the inner wall between the second opening and the first opening is provided with a gear shaft (5), the upper surface of the limiting ring (8) is provided with a ring-shaped T-shaped sliding groove (802), the inner wall of the ring-shaped T-shaped sliding groove (802) is symmetrically and slidably provided with two ring-shaped T-shaped sliding blocks (801), one end of the two ring-shaped T-shaped sliding blocks (801) close to the second opening is provided with a cylindrical top head, the circumferential outer surface close to the bottom end of the gear shaft (5) is provided with a fixed groove, the inner wall of the fixed groove is provided with a key (10), and the outer surfaces of the opposite sides of the two cylindrical top heads are respectively abutted with the key (10).

2. The gear positioning axle press mounting tool according to claim 1, wherein, The inner walls of the opposite sides of the first opening are symmetrically provided with two mounting grooves, the inner walls of the two mounting grooves are both rotatably provided with a shutter (7), and the outer surface of the shutter (7) close to the gear shaft (5) is provided with a groove matched with the gear shaft (5). The rotation supporting point of the shutter (7) is provided with a torsion spring (9).

3. The gear positioning axle press mounting tool according to claim 1, wherein, The other end of one of the ring-shaped T-shaped sliding blocks (801) is fixedly provided with a ring-shaped internal gear rack (803), the other end of the other ring-shaped T-shaped sliding block (801) is fixedly provided with a ring-shaped external gear rack (804), the bottom wall of the ring-shaped T-shaped sliding groove (802) is rotatably provided with a driving gear (805), the lower surface of the limiting ring (8) is fixedly provided with a driving motor (12), and the output end of the driving motor (12) is fixedly installed with the driving gear (805) through the bottom wall of the ring-shaped T-shaped sliding groove (802).

4. The gear positioning axle press mounting tool according to claim 1, wherein, The bottom wall of the circular groove (101) is provided with a circular hole, the inner wall of the circular hole is slidably provided with a positioning head (1101), the circumferential outer surface of the positioning head (1101) is provided with a positioning protrusion (1107) matched with the key groove, the lower surface of the positioning protrusion (1107) is fixedly provided with a fixed plate (1102), the upper surface of the fixed plate (1102) is slidably provided with a square sliding rod (1103), the top end of the square sliding rod (1103) is fixedly installed with the lower surface of the positioning head (1101), and the inner wall of the positioning cylinder (11) is provided with a positioning sliding groove (1106) matched with the positioning protrusion (1107).

5. The gear positioning axle press mounting tool according to claim 4, wherein, The bottom end of the square slide rod (1103) is fixedly installed with a baffle (1105) penetrating through the lower surface of the fixed plate (1102), the outer surface of the square slide rod (1103) is sleeved with a spring (1104), the spring (1104) is arranged between the positioning head (1101) and the fixed plate (1102), and the positioning head (1101) is slidingly installed with the inner wall of the gear body (6).

6. The gear positioning axle press mounting tool of claim 1, wherein, The upper surface of the workbench (1) is fixedly installed with a mounting rack (2), the lower surface of the mounting rack (2) is fixedly installed with a hydraulic telescopic pressure head (3), and the hydraulic telescopic pressure head (3) is arranged directly above the gear shaft (5).

7. The gear positioning axle press mounting tool of claim 1, wherein, The second opening, the first opening and the circular groove (101) are arranged on the same axis.

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