Positioning device and method for upsetting production of bars with different lengths and sizes

Abstract

The invention relates to the technical field of aero-engine blade forging, in particular to a positioning device and method for upsetting production of bars with different lengths and sizes. The positioning device comprises a female die seat, a top forging die and a plurality of specifications and models of material stopping blocks; a U-shaped groove is formed in the top of the female die holder; a semicircular punch groove and a discharging groove are formed in the top face of the top forging die, the axis of the punch groove and the axis of the discharging groove are collinear, and the discharging groove is located at the right end of the punch groove. The material stopping block comprises a base body part and a bolt mounting part, and the base body part and the bolt mounting part are connected through a connecting part; the distances A from the left end surfaces of the bolt mounting parts of the material stopping blocks with different specifications to the left end surface of the base body part are different; the top forging die and the stop block of one specification and model are mounted in the U-shaped groove; a positioning bolt is installed on the bolt installation part, the axis of the positioning bolt and the axis of the discharging groove are collinear, and a bolt head of the positioning bolt faces the right end of the discharging groove. The positioning device is suitable for upsetting production of bars with different lengths and sizes.

Description

Technical Field

[0001] The invention relates to the technical field of aero-engine blade forging, and in particular to a positioning device and method for top forging production of bars of different lengths and sizes. Background Art

[0002] The flat forging process is essentially a multi-directional die forging process. The forgings are formed by upsetting a punch and two clamping dies when they are closed. Therefore, most forgings are made by upsetting rods or bars. The purpose is to form a local gathering part to prepare for the pre-forging of blade tenons or mounting plates. For blades that need to be partially upset by bars, the upsetting part is formed by deforming a certain length of bars, but there is a problem that the length of the deformation section cannot be accurately controlled. After the top forging is completed, the size consistency of the upsetting part is poor. Considering this problem, a positioning device is designed in the top forging die seat to ensure that the deformation length of the upsetting section of each bar is consistent.

[0003] Considering that in actual production, the lengths of the production bars of different blade forgings are diverse, if positioning devices of different sizes are designed to accommodate bars of different specifications, the positioning devices will have to be replaced frequently, which will increase the difficulty of work and the complexity of operation, and also increase the probability of error. Summary of the invention

[0004] The main purpose of the present invention is to provide a positioning device and method for upsetting production of bars of different lengths and sizes, aiming to solve the above-mentioned technical problems.

[0005] To achieve the above-mentioned purpose, on the one hand, the present invention proposes a positioning device for the top forging production of bars of different lengths and sizes, comprising a female die seat, a top forging die and a plurality of specifications and models of stop blocks; a U-shaped groove is arranged on the top of the female die seat; a semicircular punch groove and a discharge groove are arranged on the top surface of the top forging die, the punch groove and the axis of the discharge groove are collinear, and the discharge groove is located at the right end of the punch groove; the stop block comprises a base part and a bolt mounting part, and the base part and the bolt mounting part are connected by a connecting part; the distance A from the left end face of the bolt mounting part to the left end face of the base part of stop blocks of different specifications is different; the top forging die and one of the specifications and models of stop blocks are installed in the U-shaped groove; a positioning bolt is installed on the bolt mounting part, the axis of the positioning bolt is collinear with the axis of the discharge groove, and the bolt head of the positioning bolt faces the right end of the discharge groove.

[0006] Preferably, a cushion block is provided in the U-shaped groove of the female die seat; the left end face of the top forging die abuts against the left side wall of the U-shaped groove, and the left end face of the base portion abuts against the right end face of the top forging die; the cushion block is clamped between the right end face of the base portion and the right side wall of the U-shaped groove.

[0007] Preferably, a baffle is fastened to the front end surface of the female die seat by screws; the front end surfaces of the top forging die, the base part and the cushion block all abut against the baffle.

[0008] Preferably, a washer is sleeved on the positioning bolt, and the washer is located between the bolt head of the positioning bolt and the left end surface of the bolt mounting portion.

[0009] Preferably, the thickness of the gasket is H, and the thickness H has different specifications; the specifications of H include 1.0 mm, 2.0 mm, and 5.0 mm.

[0010] Preferably, the distance A from the left end surface of the bolt mounting portion to the left end surface of the base portion of the stop blocks of different specifications includes 180 mm, 140 mm, and 100 mm.

[0011] Preferably, the thickness of the bolt head of the positioning bolt is T, and the thickness T has different specifications, including T=5mm and T=20mm.

[0012] On the other hand, the present invention also provides a positioning method for upsetting production of bars of different lengths and sizes, using the above positioning device, comprising the following steps:

[0013] S1. Place the bar in the discharge slot of the top forging die so that the forged part of the bar extends into the punch slot. Select a stopper of corresponding specifications and models according to the length of the right end of the bar extending out of the top forging die.

[0014] S3, installing the top forging die and the stopper block selected in step S1 together in the U-shaped groove on the top of the female die base;

[0015] S3. Install a positioning bolt on the bolt mounting portion of the stop block, and make the bolt head of the positioning bolt abut against the right end surface of the bar.

[0016] Preferably, in step S3, when installing the positioning bolt, a washer of one thickness specification is selected to be mounted on the positioning bolt, or a plurality of washers of different thickness specifications are selected to be combined and mounted on the positioning bolt to ensure that the bolt head of the positioning bolt rests against the right end face of the rod.

[0017] Preferably, in step S3, when installing the positioning bolt, a positioning bolt with a corresponding bolt head thickness is selected according to the distance from the right end of the bar to the left end surface of the bolt mounting portion and assembled on the bolt mounting portion.

[0018] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0019] (1) By adopting the positioning device provided by the present invention, when clamping bars of different lengths, a stop block of corresponding specifications and models is selected according to the length of the right end of the bar extending out of the top forging die, and the top forging die and the selected stop block are installed together in the U-shaped groove at the top of the female die seat, and a positioning bolt is installed on the bolt mounting portion of the stop block, and the bolt head of the positioning bolt is made to abut against the right end face of the bar, thereby completing the positioning of the bar.

[0020] (2) In the positioning device provided by the present invention, washers of different thicknesses can be sleeved on the positioning bolts, or positioning bolts with different bolt head thicknesses can be selected and assembled on the bolt mounting portion. By selecting washers, stop blocks, and positioning bolts of different specifications for combination, a positioning device suitable for the top forging production of bars of different lengths can be obtained. The entire device has a simple structure and can be quickly assembled in a short time, thereby solving the problem of inconvenience in positioning caused by large fluctuations in the length of bars in actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of the positioning device provided by the present invention;

[0023] Figure 2 It is a front view of the material blocking block in the present invention;

[0024] Figure 3 It is a right side view of the material blocking block in the present invention;

[0025] Figure 4 It is a front view of the gasket in the present invention;

[0026] Figure 5 for Figure 4 Middle EE section view;

[0027] Figure 6 It is a structural schematic diagram of the positioning bolt in the present invention.

[0028] Explanation of the accompanying numbers: 1. Female die seat; 1a. U-shaped groove; 2. Top forging die; 2a. Punch groove; 2b. Material discharge groove; 3. Material stop block; 3a. Base portion; 3b. Bolt mounting portion; 3c. Connecting portion; 3d. Pin hole; 4. Positioning bolt; 5. Washer; 6. Nut; 7. Spacer; 8. Bar stock; 9. Baffle; 10. Male die seat; 11. Male die. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] Combination Figures 1 to 6 As shown, a positioning device for top forging production of bars of different lengths and sizes includes a female die base 1, a top forging die 2 and a plurality of specifications and models of stopper blocks 3; a U-shaped groove 1a is arranged on the top of the female die base 1; the U-shaped groove 1a is a through groove in the front-to-back direction and open at the top. A semicircular punch groove 2a and a discharge groove 2b are arranged on the top surface of the top forging die 2, the axes of the punch groove 2a and the discharge groove 2b are in line, and the discharge groove 2b is located at the right end of the punch groove 2a; the punch groove 2a and the discharge groove 2b are connected to each other, and the diameter of the punch groove 2a is larger than the diameter of the discharge groove 2b. The axes of the punch groove 2a and the discharge groove 2b are arranged in the left-right direction.

[0032] Combination Figure 2 As shown, the stopper block 3 includes a base portion 3a and a bolt mounting portion 3b, and the base portion 3a and the bolt mounting portion 3b are connected by a connecting portion 3c; the base portion 3a, the connecting portion 3c and the bolt mounting portion 3b are an integrated structure. The distance A from the left end face of the bolt mounting portion 3b to the left end face of the base portion 3a of the stopper blocks 3 of different specifications is different; specifically, the size of A includes 180mm, 140mm, and 100mm. In actual use, the top forging die 2 and one of the specifications and models of the stopper block 3 are installed in the U-shaped groove 1a; a positioning bolt 4 is installed on the bolt mounting portion 3b, the axis of the positioning bolt 4 is colinear with the axis of the discharge trough 2b, and the bolt head of the positioning bolt 4 faces the right end of the discharge trough 2b.

[0033] Combination Figure 1 As shown, a cushion block 7 is provided in the U-shaped groove 1a of the female die seat 1; the left end face of the top forging die 2 abuts against the left side wall of the U-shaped groove 1a, and the left end face of the base portion 3a abuts against the right end face of the top forging die 2; the cushion block 7 is clamped between the right end face of the base portion 3a and the right side wall of the U-shaped groove 1a.

[0034] Furthermore, a pin hole 3d is provided on the base portion 3a, a pin (not shown in the figure) is inserted between the base portion 3a and the top forging die 2, and a pin (not shown in the figure) is inserted between the base portion 3a and the cushion block 7. Figure 2 The purpose of providing the latch is to connect the top forging die 2, the stopper block 3 and the cushion block 7 together, so as to ensure the stability of the positioning device during the top forging process, thereby ensuring that the axis of the positioning bolt 4 is in line with the axis of the discharge groove 2b, so that the positioning bolt 4 can better abut against the end face of the bar 8.

[0035] Combination Figure 1 As shown, a baffle plate 9 is fastened to the front end surface of the female die seat 1 by screws; the front end surfaces of the top forging die 2, the base portion 3a, and the cushion block 7 all abut against the baffle plate 9.

[0036] In this embodiment, a washer 5 is sleeved on the positioning bolt 4, and the washer 5 is located between the bolt head of the positioning bolt 4 and the left end surface of the bolt mounting portion 3b. Further, the thickness of the washer 5 is H, and the thickness H has different specifications; the specifications of H include 1.0mm, 2.0mm, and 5.0mm.

[0037] Combination Figure 6 As shown, the thickness of the bolt head of the positioning bolt 4 is T, and the thickness T has different specifications, including T=5mm and T=20mm.

[0038] On the other hand, this embodiment also provides a positioning method for upsetting production of bars of different lengths and sizes, using the above positioning device, comprising the following steps:

[0039] S1. Place the bar 8 in the discharge groove 2b of the top forging die 2, so that the forged part of the bar 8 extends into the punch groove 2a. According to the length of the right end of the bar 8 extending out of the top forging die 2, select the corresponding specification and model of the stopper block 3;

[0040] S3, installing the top forging die 2 and the stopper block 3 selected in step S1 together in the U-shaped groove 1a at the top of the female die base 1;

[0041] S3. Install the positioning bolt 4 on the bolt mounting portion 3 b of the stopper block 3 , and make the bolt head of the positioning bolt 4 abut against the right end surface of the bar 8 .

[0042] In this embodiment, in step S3, when installing the positioning bolt 4, one of the washers 5 with different thickness specifications is selected to be mounted on the positioning bolt 4, or a plurality of washers 5 with different thickness specifications are selected to be combined and mounted on the positioning bolt 4 to ensure that the bolt head of the positioning bolt 4 is against the right end face of the rod 8.

[0043] In this embodiment, in step S3, when installing the positioning bolt 4, according to the distance from the right end of the bar 8 to the left end surface of the bolt mounting portion 3b, a positioning bolt 4 with a corresponding bolt head thickness is selected and assembled on the bolt mounting portion 3b.

[0044] Combination Figure 1 As shown, during top forging, the bar 8 is placed in the discharge groove 2b of the top forging die 2, the forged portion of the bar 8 extends into the punch groove 2a, and the bolt head of the positioning bolt 4 abuts against the right end surface of the bar 8. The male die seat 10 drives the male die 11 to move rightward, and the male die 11 extends into the punch groove 2a for top forging.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A positioning device for upsetting production of bars of different lengths, characterized in that: It comprises a female die base (1), a top forging die (2) and a plurality of material blocking blocks (3) of different specifications and models; a U-shaped groove (1a) is arranged on the top of the female die base (1); A semicircular punch groove (2a) and a material discharge groove (2b) are provided on the top surface of the top forging die (2), the punch groove (2a) and the material discharge groove (2b) are colinear in axis, and the material discharge groove (2b) is located at the right end of the punch groove (2a); The material stopper (3) comprises a base portion (3a) and a bolt mounting portion (3b), the base portion (3a) and the bolt mounting portion (3b) being connected via a connecting portion (3c); the distance A from the left end surface of the bolt mounting portion (3b) to the left end surface of the base portion (3a) of the material stopper (3) of different specifications is different; the top forging die (2) and the material stopper (3) of one specification are installed in the U-shaped groove (1a); A positioning bolt (4) is installed on the bolt installation portion (3b), the axis of the positioning bolt (4) is colinear with the axis of the discharge trough (2b), and the bolt head of the positioning bolt (4) faces the right end of the discharge trough (2b).

2. A positioning device for upsetting production of bars of different lengths as claimed in claim 1, characterized in that: A cushion block (7) is arranged in the U-shaped groove (1a) of the female die seat (1); the left end face of the top forging die (2) abuts against the left side wall of the U-shaped groove (1a), and the left end face of the base part (3a) abuts against the right end face of the top forging die (2); and the cushion block (7) is clamped between the right end face of the base part (3a) and the right side wall of the U-shaped groove (1a).

3. A positioning device for upsetting production of bars of different lengths as claimed in claim 2, characterized in that: A baffle (9) is fastened to the front end surface of the female die seat (1) by means of screws; the front end surfaces of the top forging die (2), the base portion (3a) and the cushion block (7) all abut against the baffle (9).

4. A positioning device for upsetting production of bars of different lengths as claimed in claim 1, characterized in that: A washer (5) is sleeved on the positioning bolt (4), and the washer (5) is located between the bolt head of the positioning bolt (4) and the left end surface of the bolt mounting portion (3b).

5. A positioning device for upsetting production of bars of different lengths as claimed in claim 4, characterized in that: The thickness of the gasket (5) is H, and the thickness H has different specifications; the specifications of H include 1.0 mm, 2.0 mm, and 5.0 mm.

6. A positioning device for upsetting production of bars of different lengths as claimed in claim 1, characterized in that: The dimensions of the distance A from the left end surface of the bolt mounting portion (3b) to the left end surface of the base portion (3a) of the blocking blocks (3) of different specifications include 180 mm, 140 mm, and 100 mm.

7. A positioning device for upsetting production of bars of different lengths as claimed in claim 1, characterized in that: The thickness of the bolt head of the positioning bolt (4) is T, and the thickness T has different specifications, including T=5mm and T=20mm.

8. A positioning method for upsetting production of bars of different lengths, characterized in that: The positioning device according to any one of claims 1 to 7 comprises the following steps: S1. Place the bar (8) in the discharge groove (2b) of the top forging die (2) so that the forged portion of the bar (8) extends into the punch groove (2a). Select a stopper block (3) of corresponding specifications and models according to the length of the right end of the bar (8) extending out of the top forging die (2); S3, installing the top forging die (2) and the stopper block (3) selected in step S1 together in the U-shaped groove (1a) at the top of the female die base (1); S3. Install the positioning bolt (4) on the bolt mounting portion (3b) of the stopper block (3), and make the bolt head of the positioning bolt (4) abut against the right end surface of the bar (8).

9. A positioning method for upsetting production of bars of different lengths as claimed in claim 8, characterized in that: In step S3, when installing the positioning bolt (4), a washer (5) of one thickness specification is selected and mounted on the positioning bolt (4), or a plurality of washers (5) of different thickness specifications are selected and mounted in combination on the positioning bolt (4) to ensure that the bolt head of the positioning bolt (4) is against the right end face of the bar (8).

10. A positioning method for upsetting production of bars of different lengths as claimed in claim 8, characterized in that: In step S3, when installing the positioning bolt (4), according to the distance from the right end of the bar (8) to the left end face of the bolt mounting portion (3b), a positioning bolt (4) with a corresponding bolt head thickness is selected and assembled on the bolt mounting portion (3b).

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