Pneumatic hammering combined limiting device

Abstract

The invention discloses a pneumatic hammering combined limiting device which comprises an air hammer assembly, a pneumatic hammer rod is arranged in the air hammer assembly, one end of the air hammer assembly is connected with a connecting cylinder arranged on the outer side of the pneumatic hammer rod in a sleeving mode, and a limiting sleeve is arranged at the end, away from the air hammer assembly, of the connecting cylinder. A limiting sleeve is arranged on the middle body, a pneumatic hammer rod is arranged on the limiting sleeve, a limiting shaft coaxial with the axis of the pneumatic hammer rod is arranged in the limiting sleeve, and one end of the limiting shaft extends to the outer side of the limiting sleeve. The limiting shaft slides in a manner of being perpendicular to the gravity and lightly floats on the bimetallic strip, and meanwhile, the completion time of hammering the limiting shaft by the air hammer is less than 2 seconds, so that the assembly production efficiency and quality are improved, the mounting depth size of parts is accurately controlled, and any parts are not damaged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile turbocharger assembly production process, in particular to a pneumatic hammering combined limiting device. Background Art

[0002] At present, the bimetallic strips installed in the intermediate body of the automobile supercharger are mainly installed by workers using simple hand-held hammering tools, which are mainly divided into the following two structures: one is to hold the hammer to hit the other end of the cylinder with a flatter top to squeeze the position on the bimetallic strip. The operation method is simple, but the visual inspection has a poor feel, low accuracy, and is easy to damage and deform the parts; the other is to hold the hammer to hit the cylinder (processed into a step shape), and the other end is relatively flat on the bimetallic strip to limit the depth size. During operation, due to poor control of the vertical direction and poor control of the depth size, the thrust surface of the intermediate body is easily damaged. Therefore, considering that many manufacturers still use hand-held hammering devices, it is urgent to develop a hammering device that is simple to operate and has high accuracy. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a pneumatic hammering combined limit device, which solves the problems of poor precision and easy damage to parts caused by the prior manual hammering.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pneumatic hammer combination limit device, including an air hammer assembly, a pneumatic hammer rod is arranged in the air hammer assembly, one end of the air hammer assembly is connected to a connecting tube sleeved on the outside of the pneumatic hammer rod, the end of the connecting tube away from the air hammer assembly is provided with a limit sleeve, the limit sleeve is provided with a limit shaft coaxially arranged with the axis of the pneumatic hammer rod, one end of the limit shaft extends to the outside of the limit sleeve, and a limit shaft annular boss is arranged at the edge position along the circumferential direction, a limit shaft annular groove is formed on the inner side of the limit shaft annular boss, a clearance fit is adopted between the limit shaft and the limit sleeve, and a retaining spring is installed between the inner wall of the limit sleeve and the outer wall of the limit shaft.

[0005] Preferably, the side of the limit sleeve away from the connecting tube is a limit sleeve positioning surface, the limit sleeve positioning surface can be fitted with the intermediate body thrust surface, the limit sleeve outer wall is a limit sleeve positioning circle, the limit sleeve positioning circle and the intermediate body thrust stop are clearance fit.

[0006] Preferably, a limit sleeve guide slide is provided on one side inside the limit sleeve, and a limit sleeve slide is provided on the other side; a limit guide shaft is provided on one side outside the limit shaft, and a limit sliding shaft is provided on the other side; a clearance fit is formed between the limit sleeve guide slide and the limit guide shaft, and a clearance fit is formed between the limit sleeve slide and the limit sliding shaft.

[0007] Preferably, a limiting shaft platform is provided on one side of the limiting sliding shaft, and a limiting sleeve limiting platform matching the limiting shaft platform is provided on one side of the limiting sleeve guide slideway.

[0008] Preferably, when the pneumatic hammer rod hammers the limiting shaft, the limiting shaft platform and the limiting sleeve limiting platform are tightly fitted.

[0009] Preferably, the inner wall of the limiting sleeve is provided with a retaining ring groove for installing a retaining ring.

[0010] Preferably, the height from the annular boss of the limiting shaft to the positioning surface of the limiting sleeve is the key dimension of the depth of the bimetallic strip to be controlled, and the limiting shaft is stuck in the limiting sleeve during the hammering process to more accurately control the dimension.

[0011] Beneficial Effects

[0012] The present invention provides a pneumatic hammer combination limit device, which has the following beneficial effects:

[0013] The installation of the intermediate bimetallic strip is completed by hammering the limiting shaft with a pneumatic hammer, and the gas energy is converted into kinetic energy, which is then transferred to the limiting shaft to achieve the purpose. The piston reciprocating working principle is adopted to make the positioning surface of the limiting sleeve flat against the thrust surface of the intermediate, and the limiting shaft slides vertically by gravity and floats on the bimetallic strip. At the same time, the air hammer hammers the limiting shaft to complete the time of less than 2 seconds, thereby improving the assembly production efficiency and quality, accurately controlling the installation depth dimensions of parts and components, and not damaging any parts. The problems of poor precision, poor depth dimension control, and easy damage to parts caused by manual hammering are effectively improved. The present invention can effectively control the depth dimension, and is more suitable for mass production to improve efficiency. When producing the same large quantity, the pneumatic hammer combined limit device saves more time than traditional hammering, which brings great convenience to production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of a partially enlarged structure of the present invention.

[0016] In the figure: 1. limit sleeve; 101. limit sleeve positioning surface; 102. limit sleeve positioning circle; 103. limit sleeve guide slide; 104. limit sleeve limit platform; 105. limit sleeve slide; 2. limit shaft; 201. limit shaft annular boss; 202. limit shaft annular groove; 203. limit guide shaft; 204. limit shaft platform; 205. limit sliding shaft; 3. retaining spring; 4. connecting tube; 5. pneumatic hammer rod; 6. pneumatic hammer assembly. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-2 The present invention provides a technical solution: a pneumatic hammer combination limit device, comprising an air hammer assembly 6, wherein the air hammer assembly 6 is provided with a pneumatic hammer rod 5, one end of the air hammer assembly 6 is connected to a connecting tube 4 sleeved on the outside of the pneumatic hammer rod 5, the end of the connecting tube 4 away from the air hammer assembly 6 is provided with a limit sleeve 1, the limit sleeve 1 is provided with a limit shaft 2 coaxially arranged with the axis of the pneumatic hammer rod 5, one end of the limit shaft 2 extends to the outside of the limit sleeve 1, and a limit shaft annular boss is provided at the edge position along the circumferential direction, a limit shaft annular groove 202 is formed on the inner side of the limit shaft annular boss 201, a clearance fit is adopted between the limit shaft 2 and the limit sleeve 1, and a retaining spring 3 is installed between the inner wall of the limit sleeve 1 and the outer wall of the limit shaft 2.

[0019] This embodiment is further configured such that the side of the limit sleeve 1 away from the connecting tube 4 is a limit sleeve positioning surface 101, and the limit sleeve positioning surface 101 can be fitted with the intermediate body thrust surface, and the outer wall of the limit sleeve 1 is a limit sleeve positioning circle 102, and the limit sleeve positioning circle 102 and the intermediate body thrust stop are clearance-fitted.

[0020] This embodiment is further configured as follows: a limit sleeve guide slide 103 is provided on one side of the limit sleeve 1, and a limit sleeve slide 105 is provided on the other side; a limit guide shaft 203 is provided on one side outside the limit shaft 2, and a limit sliding shaft 205 is provided on the other side; a clearance fit is formed between the limit sleeve guide slide 103 and the limit guide shaft 203, and a clearance fit is formed between the limit sleeve slide 105 and the limit sliding shaft 205.

[0021] This embodiment is further configured such that a limiting shaft platform 204 is provided on one side of the limiting sliding shaft 205 , and a limiting sleeve limiting platform 104 matching with the limiting shaft platform 204 is provided on one side of the limiting sleeve guide slide 103 .

[0022] This embodiment is further configured such that when the pneumatic hammer rod 5 hammers the limiting shaft 2 , the limiting shaft platform 204 and the limiting sleeve limiting platform 104 are tightly fitted.

[0023] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0024] Embodiment: The pneumatic hammer combination limit device of the present invention includes a limit sleeve 1, a limit shaft 2, a retaining spring 3, a connecting tube 4, a pneumatic hammer rod 5, and a pneumatic hammer assembly 6. When in use, the limit sleeve positioning surface 101 is placed flat on the intermediate body thrust surface, the limit sleeve positioning circle 102 and the intermediate body thrust stop mouth are clearance-matched with each other, the limit sleeve guide slide 103 and the limit guide shaft 203 are clearance-matched, the limit sleeve slide 105 and the limit sliding shaft 205 are clearance-matched, the limit shaft annular boss 201 floats on the bimetallic ring surface by gravity, and the limit shaft annular groove 202 just avoids the important dimensions of the bimetallic strip without damaging the surface. By controlling the pneumatic hammer rod 5 to quickly hammer the limit shaft 2 under vertical gravity, the limit shaft platform 204 is tightly fitted with the limit sleeve limit platform 104, and at the same time, the limit shaft annular boss 201 is squeezed to the set position of the bimetallic strip.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic hammer combination limit device, comprising a pneumatic hammer assembly (6), wherein a pneumatic hammer rod (5) is provided in the pneumatic hammer assembly (6), characterized in that: One end of the pneumatic hammer assembly (6) is connected to a connecting tube (4) sleeved on the outside of the pneumatic hammer rod (5); the end of the connecting tube (4) away from the pneumatic hammer assembly (6) is provided with a limiting sleeve (1); a limiting shaft (2) coaxially arranged with the axis of the pneumatic hammer rod (5) is provided in the limiting sleeve (1); one end of the limiting shaft (2) extends to the outside of the limiting sleeve (1), and a limiting shaft annular boss is provided at the edge position along the circumferential direction; a limiting shaft annular groove (202) is formed on the inner side of the limiting shaft annular boss (201); a clearance fit is adopted between the limiting shaft (2) and the limiting sleeve (1); a retaining spring (3) is installed between the inner wall of the limiting sleeve (1) and the outer wall of the limiting shaft (2).

2. A pneumatic hammer combination limiter according to claim 1, characterized in that: The side of the limiting sleeve (1) away from the connecting tube (4) is a limiting sleeve positioning surface (101), and the limiting sleeve positioning surface (101) can be fitted with the intermediate body thrust surface. The outer wall of the limiting sleeve (1) is a limiting sleeve positioning circle (102), and the limiting sleeve positioning circle (102) and the intermediate body thrust stop are clearance-fitted.

3. A pneumatic hammer combination limit device according to claim 2, characterized in that: A limiting sleeve guide slideway (103) is provided on one side of the limiting sleeve (1), and a limiting sleeve slideway (105) is provided on the other side; a limiting guide shaft (203) is provided on one side of the limiting shaft (2), and a limiting sliding shaft (205) is provided on the other side; a clearance fit is formed between the limiting sleeve guide slideway (103) and the limiting guide shaft (203), and a clearance fit is formed between the limiting sleeve slideway (105) and the limiting sliding shaft (205).

4. A pneumatic hammer combination limiter according to claim 3, characterized in that: A limiting shaft platform (204) is provided on one side of the limiting sliding shaft (205), and a limiting sleeve limiting platform (104) matching the limiting shaft platform (204) is provided on one side of the limiting sleeve guide slideway (103).

5. A pneumatic hammer combination limiter according to claim 4, characterized in that: When the pneumatic hammer rod (5) hammers the limiting shaft (2), the limiting shaft platform (204) and the limiting sleeve limiting platform (104) fit tightly together.

6. A pneumatic hammer combination limiter according to claim 1, characterized in that: The inner wall of the limiting sleeve (1) is provided with a retaining ring groove for installing a retaining ring (3).

Images