CN106836368A - A kind of die forging method of modified bucket tooth and its tooth set - Google Patents

Abstract

The invention discloses the die forging method that a kind of modified bucket tooth and its tooth cover, including toothholder and tooth set, it is characterised in that：The toothholder rear end is provided with bucket lip installing port, and the toothholder front end is provided with the contiguous block for being connected with tooth set and being installed, and the toothholder is anterior to be provided with pin-and-hole with tooth set junction；The tooth set rear end sets toothholder installing port, the toothholder installing port front end is provided with the link slot for coordinating with contiguous block and installing, the toothholder is installed to be respectively equipped with labium maxillare and lower lip in blind pin-and-hole corresponding with pin-and-hole, the pin-and-hole and tooth is covered into locked on toothholder by the regulation Assembly of pin for setting.Tooth set, toothholder draw bail rationally, long-term use do not easily cause tooth set lose；Change conveniently.

Description

A Die Forging Method of Improved Bucket Tooth and Its Tooth Sleeve

technical field

The invention relates to the field of excavators, in particular to an improved die forging method for bucket teeth and gear sleeves thereof.

Background technique

Excavator bucket teeth are typical wear parts of excavating equipment. Bucket teeth are severely worn during use, and parts are replaced frequently. In order to reduce the cost of bucket teeth, it is usually designed as a combined structure.

The existing combined bucket teeth also have the following defects: the connection structure of the tooth sleeve and the tooth seat is unreasonable, and the tooth sleeve is lost due to long-term use; it is inconvenient to replace; Alloy steel materials have good comprehensive mechanical properties and are not prone to breakage. However, low alloy steel materials wear more seriously. When they are worn out to the point where they cannot protect, they need to be replaced. Frequent replacement of bucket teeth not only makes the The efficiency is reduced, and the cost of use is also greatly increased; and if the alloy material with higher hardness is used to make the bucket teeth, although it has better wear resistance, the comprehensive mechanical properties are poor, and it is easy to break during use.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, provide an improved die forging method for bucket teeth and their gear sleeves, and solve the problem of inconvenient replacement of combined bucket teeth and the problem of undurable gear sleeves.

The present invention is achieved through the following technical solutions: an improved bucket tooth, including a tooth seat and a tooth sleeve, characterized in that: the rear end of the tooth seat is provided with a bucket lip installation port, and the front end of the tooth seat is provided with a There is a connecting block for connecting and installing the gear sleeve, and a pin hole is provided at the connection between the front part of the tooth base and the gear sleeve; the rear end of the gear sleeve is provided with a tooth base installation port, and the front end of the tooth base installation port is provided with a joint for installation with the connection block. The connection groove, the upper lip and the lower lip of the tooth seat installation port are respectively provided with blind pin holes corresponding to the pin holes, and the tooth sleeve is locked on the tooth seat by the adjusting pin assembly provided in the pin hole.

Further, the adjusting pin shaft assembly includes a gear pin, a pin sleeve and a worm gear adjusting shaft, the two ends of the pin sleeve are respectively threaded with gear pins, the outer ring surface of the pin sleeve is provided with a worm screw thread, and the worm gear The worm gear on the adjusting shaft meshes with the worm thread on the outer ring surface of the pin sleeve, and the pin sleeve is driven to rotate by rotating the worm gear adjusting shaft, and the rotation of the pin sleeve drives the tooth pins at both ends to elongate and shorten. The shaft mounting hole is vertically arranged with the pin hole.

Further, the tooth pin is provided with a limit block, and the two ends of the pin hole are provided with a limit groove that matches the limit block, and the limit block is limited by the limit groove to limit the tooth pin to only axial sports.

Further, a turbine adjustment shaft adjustment hole corresponding to the turbine adjustment shaft installation hole is provided on the side of the gear sleeve, and the turbine adjustment shaft is adjusted through the turbine adjustment shaft adjustment hole.

Further, silicone oil rubber shock-absorbing gaskets are arranged between the upper lip and the lower lip of the tooth seat installation port and the tooth seat.

Further, a wear-resistant cap is provided on the upper front end of the tooth holder.

A die forging method of a gear sleeve, wherein the gear sleeve is formed by die forging of A-100 alloy steel, and the die forging process of the gear sleeve includes the following steps:

Step 1: cutting;

Step 2: blank machining;

Step 3: Put the machined billet into the electric furnace for heating;

Step 4: Use a free forging hammer to forge, and air cool after completing the forging;

Step 5: put the block into the electric furnace to heat, and preheat the mold at the same time;

Step 6: Die forging with impact hammer or counter hammer, air cooling after completion of die forging;

Step 7: Heat treatment.

Further, the heating process of the billet in the step 2 is as follows: first, the temperature in the electric furnace is raised to 850°C, and then kept for 60 minutes, and then the temperature in the electric furnace is raised to 1050°C, and kept for 30 minutes;

The heating process of the block in step 5 is as follows: firstly raise the temperature in the electric furnace to 850°C, then keep it warm for 40 minutes, then raise the temperature in the electric furnace to 1050°C, and keep it warm for 25 minutes.

Further, the preheating temperature of the mold in the step 2 is 250° C. to 350° C., and the preheating time is 2 hours.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The gear sleeve and the tooth seat are also installed with the pin lock of the adjusting pin assembly. The adjusting pin assembly is used. The gear sleeve can be locked through the blind pin hole. The blind pin hole can prevent the pin from being exposed and squeezed Deformation, rust and other reasons lead to the problem that the pin disassembly remains unchanged;

2. The adjusting pin shaft assembly adopts a telescopic structure, using the transmission principle of the worm gear, and the structure is simple and practical. Damaged, easy to disassemble;

3. Silicon oil rubber shock-absorbing gaskets can be added between the gear sleeve and the gear seat to bridge the gap. On the one hand, it can reduce the impact of the impact force on the excavator’s hydraulic system and electrical system. On the other hand, it can also effectively prevent the gear sleeve and Oxidation and rust due to interaction between tooth seats;

4. There is a wear-resistant cap on the front end of the tooth seat, which can effectively improve the wear resistance of the bucket teeth, thereby increasing the service life;

5. The present invention completes the die forging forming process of the tooth sleeve through two fires, which can make the grain more refined without wasting too many forging fires, which not only ensures the higher strength of the tooth sleeve, but also saves processing costs .

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not limit the embodiments of the present invention. In the attached picture:

Fig. 1 is a structural schematic diagram of an improved bucket tooth of the present invention;

Fig. 2 is a schematic structural view of the tooth holder of the present invention;

Fig. 3 is the structural representation of pin hole of the present invention;

Fig. 4 is a structural schematic diagram of the gear sleeve of the present invention;

Fig. 5 is a schematic diagram of the A-A sectional structure of Fig. 4 of the present invention;

Fig. 6 is a structural schematic diagram of the adjusting pin assembly of the present invention;

Marks and corresponding component names in the attached drawings:

1-tooth seat, 2-tooth sleeve, 3-bucket lip installation port, 4-connection block, 5-pin hole, 6-turbine adjustment shaft adjustment hole, 7-connection groove, 8-tooth seat installation port, 9-blind Pin hole, 10-adjusting pin shaft assembly, 11-tooth pin, 12-pin sleeve, 13-turbine adjusting shaft, 14-limiting block, 15-limiting groove, 16-silicone oil rubber shock-absorbing gasket, 17-resistant Mill cap, 18-turbine adjustment shaft mounting hole.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

Example 1

As shown in Figure 1-6, an improved bucket tooth of the present invention includes a tooth seat 1 and a tooth sleeve 2. The rear end of the tooth seat 1 is provided with a bucket lip installation opening 3, and the front end of the tooth seat 1 is provided with a tooth sleeve 2. Installed connection block 4, pin hole 5 is provided at the connection between the front part of tooth seat 1 and tooth sleeve 2; The connection groove 7, the tooth seat installation port 8, the upper lip and the lower lip are respectively provided with blind pin holes 9 corresponding to the pin holes 5, and the tooth sleeve 2 is locked on the tooth seat 1 by the set adjustment pin assembly 10 in the pin hole 5 superior.

As shown in Figure 6, the present invention is an improved bucket tooth. The adjusting pin shaft assembly 10 includes a gear pin 11, a pin sleeve 12 and a turbine adjusting shaft 13. The two ends of the pin sleeve 12 are connected with the gear pin 11 through threads respectively. The outer ring surface of the pin sleeve 12 is provided with a worm screw thread, and the worm gear on the worm gear adjustment shaft 13 engages with the worm screw thread on the outer ring surface of the pin sleeve 12. By rotating the worm gear adjustment shaft 13, the pin sleeve 12 is driven to rotate, and the pin sleeve 12 rotates again. The gear pins 11 at both ends are driven to elongate and shorten. The turbine adjusting shaft installation hole 18 of the turbine adjusting shaft 13 is vertically arranged with the pin hole 5 . A turbine adjusting shaft adjusting hole 6 corresponding to the turbine adjusting shaft installation hole 18 is provided on the side of the tooth sleeve 2 , and the turbine adjusting shaft 13 is adjusted through the turbine adjusting shaft adjusting hole 6 .

As shown in Figures 3 and 6, the present invention is an improved bucket tooth. A limiting block 14 is arranged on the tooth pin 11, and a limiting groove 15 matched with the limiting block 14 is arranged at both ends of the pin hole 5. The slot 15 limits the limit block 14 so that the gear pin 11 can only move axially.

As shown in FIG. 1 , the present invention is an improved bucket tooth. Silicon oil rubber shock absorbing gaskets 16 are arranged between the upper lip and the lower lip of the installation port of the tooth seat 1 and the tooth seat. As shown in FIG. 1 , the present invention is an improved bucket tooth. A wear-resistant cap 17 is provided on the upper front end of the tooth seat 1 .

An improved bucket tooth of the present invention, when disassembling and installing, first install the adjusting pin shaft assembly 10 in the pin hole 5 and the turbine adjusting shaft mounting hole 18 perpendicular to it, and then set the gear sleeve 2 through the connecting groove 7 in the On the connecting block 4 at the front end of the tooth holder 1, and install the silicone oil rubber damping gasket 16 between the upper and lower lips of the tooth holder installation port 8 and the tooth holder 1, through the turbine adjustment shaft adjustment hole 6 set on the side of the gear holder 2 Adjust the turbine adjustment shaft 13 so that the tooth pin 11 is fixed in the blind pin hole 9 at the upper lip and the lower lip of the tooth seat installation port 8, and then install the wear-resistant cap 17 on the upper part of the front end of the tooth seat 1 and complete the installation. When disassembling, use Just reverse the steps, easy to operate and easy to disassemble.

Example 2

As shown in Fig. 4-5, the present invention is a die forging method of a gear sleeve. The gear sleeve 2 is formed by die forging of A-100 alloy steel. The die forging process of the gear sleeve 2 includes the following steps:

Step 1: cutting;

Step 2: The billet is machined; the heating process of the billet in step 2 is as follows: firstly, the temperature in the electric furnace is raised to 850°C, and then kept for 60 minutes, and then the temperature in the electric furnace is raised to 1050°C, and kept for 30 minutes; preheating of the mold in step 2 The temperature is 250°C-350°C, and the preheating time is 2 hours.

Step 3: Put the machined billet into the electric furnace for heating;

Step 4: Use a free forging hammer to forge, and air cool after completing the forging;

Step 5: Put the block into the electric furnace to heat, and preheat the mold at the same time; the heating process of the block in step 5 is to first raise the temperature in the electric furnace to 850°C, then keep it warm for 40 minutes, and then raise the temperature in the electric furnace to 1050°C , keep warm for 25min.

Step 6: Die forging with impact hammer or counter hammer, air cooling after completion of die forging;

Step 7: Heat treatment.

Finishing the die forging process of the gear sleeve through two fires can make the grains more refined and ensure the higher strength of the gear sleeve. The billet or block is heated to 850°C and kept warm, the purpose is to prevent the heating from being too fast, and the internal thermal stress is too large to cause cracks, which will affect the performance of the tooth sleeve. The billet or block is heated to 1050°C and kept warm, the purpose is to make the internal structure austenitized, which is conducive to deformation.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (9)

1. a kind of modified bucket tooth, including toothholder (1) and tooth set (2), it is characterised in that：Toothholder (1) rear end is provided with bucket lip Installing port (3), toothholder (1) front end is provided with the contiguous block (4) for being connected with tooth set (2) and being installed, toothholder (1) front portion and tooth Set (2) junction is provided with pin-and-hole (5)；Tooth set (2) rear end sets toothholder installing port (8), toothholder installing port (8) front end The link slot (7) for coordinating with contiguous block (4) and installing is provided with, is respectively equipped with and pin at toothholder installing port (8) upper lip and lower lip Regulation Assembly of pin (10) in the corresponding blind pin-and-hole (9) in hole (5), the pin-and-hole (5) by setting is locked in tooth by tooth set (2) On seat (1).

2. a kind of modified bucket tooth according to claim 1, it is characterised in that：Regulation Assembly of pin (10) is including tooth Pin (11), guide (12) and turbine adjustment axis (13), guide (12) two ends have been connected through a screw thread alligator (11), institute respectively State and worm thread is provided with guide (12) outer ring surface, the turbo tooth on the turbine adjustment axis (13) and guide (12) outer ring surface On worm thread engagement, by rotate turbine adjustment axis (13) drive guide (12) rotate, guide (12) rotate drive two again Alligator (11) elongation and shortening at end, turbine adjustment axis mounting hole (18) of the turbine adjustment axis (13) are vertical with pin-and-hole (5) Set.

3. a kind of modified bucket tooth according to claim 2, it is characterised in that：Limited block is provided with the alligator (11) (14), pin-and-hole (5) two ends are provided with the stopper slot (15) being engaged with limited block (14), by stopper slot (15) to limit The restriction of position block (14) can only be axially moved so as to limit alligator (11).

4. a kind of modified bucket tooth according to claim 3, it is characterised in that：It is provided with the side of the tooth set (2) Turbine adjustment axis adjustment hole (6) corresponding with turbine adjustment axis mounting hole (18), by the turbine adjustment axis adjustment hole (6) Turbine adjustment axis (13) are adjusted.

5. a kind of modified bucket tooth according to claim 1, it is characterised in that：The toothholder (1) installs labium maxillare with Silicone oil rubber shock-absorbing pad (16) is provided between lip and toothholder.

6. a kind of modified bucket tooth according to claim 1, it is characterised in that：Toothholder (1) upper front end is provided with Wear-resisting cap (17).

7. the die forging method that a kind of tooth as described in claim any one of 1-6 covers, it is characterised in that：The tooth set (2) uses A-100 alloy steel dies forging moldings, the contour forging technique of the tooth set (2) is comprised the following steps：

Step 1：Blanking；

Step 2：Blank machine adds；

Step 3：By machine plus after blank be put into heating by electric cooker；

Step 4：Forging famine is carried out using flat-die hammer, air cooling after forging famine is completed；

Step 5：Famine material is put into heating by electric cooker, while carrying out mould preheating；

Step 6：Using jump bit or counter-blow hammer die forging, air cooling after die forging is completed；

Step 7：Heat treatment.

8. a kind of modified bucket tooth according to claim 7, it is characterised in that：The heating process of blank in the step 2 For, electric in-furnace temperature is first risen to 850 DEG C, 60min is then incubated, then electric in-furnace temperature is risen to 1050 DEG C, it is incubated 30min；

The heating process of waste material is that electric in-furnace temperature first is risen into 850 DEG C in the step 5, is then incubated 40min, then by electricity In-furnace temperature rises to 1050 DEG C, is incubated 25min.

9. a kind of modified bucket tooth according to claim 8, it is characterised in that：The preheating temperature of mould in the step 2 It it is 250 DEG C~350 DEG C, a length of 2 hours during preheating.