Machining device for preventing central hole from being crushed

Abstract

The utility model discloses a processing device capable of preventing a central hole from being crushed, which comprises a driving component, a driving component, a driving component, a driving component, a driving component, a driving component, a driving component and a driving component, wherein the driving component comprises a driving body and a driving rod and a driving tip respectively arranged at two ends of the driving body; the sealing assembly is arranged at the end, provided with the driving center, of the driving body and comprises a sealing sleeve arranged at the end of the driving body in a sleeving mode and movably connected with the driving body, and a sealing piece arranged on the sealing sleeve. Wherein a plurality of driving pins are arranged on one side of the driving center, the sealing sleeve is attached to the driving center and the driving pins, and when the driving center and the driving pins machine a workpiece, the sealing sleeve wraps a gap between the driving pins and the driving body. According to the utility model, the sealing sleeve is sleeved on the driving body and covers the gap between the driving pin and the driving body, so that the damage of the device and the scrapping of a workpiece caused by the entrance of scrap iron into the device in the machining process are avoided.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts processing, in particular to a processing device for preventing center hole from being crushed. Background Art

[0002] Finish turning is a common and important machining process for automobile transmission gears. Its good and stable machining accuracy is an important guarantee for the smooth implementation of subsequent processing. For common shaft workpieces, the finish turning process generally adopts end-face drive tooling based on the use of high-efficiency CNC lathes and hydraulic chucks to give full play to the performance of high-efficiency equipment, achieve the purpose of reducing processes, improving efficiency and reducing processing costs.

[0003] At present, the general end face drive tooling includes a center, claws, drive pins and other parts. Its working principle is: the shaft workpiece is fixed by the upper and lower centers, and the workpiece is clamped and driven to rotate, so that all external circles and end faces can be processed in one clamping.

[0004] However, due to the existence of the driving pin, the shape of the tip becomes irregular and the surface shape becomes complex, especially the gap formed between the driving pin and the surface of the driving tooling. During the cutting process, iron chips fly and easily enter the driving tooling through the gap, causing damage to the internal tooling, causing the center hole of the workpiece to be crushed, and then the workpiece to be crushed, so that the workpiece needs to be repaired or scrapped. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a processing device that can prevent the center hole from being crushed, aiming to solve the problem that during cutting processing, iron chips can easily enter the driving tooling through the gap formed by the driving pin and the surface of the driving tooling, causing damage to the internal tooling, causing the center hole of the workpiece to be crushed, and then crushing the workpiece, so that the workpiece needs to be repaired or scrapped.

[0006] To achieve the above object, the utility model is implemented through the following technical solutions: a processing device for preventing center hole crushing, the processing device for preventing center hole crushing comprising:

[0007] The driving assembly comprises a driving body, a driving rod and a driving tip respectively arranged at two ends of the driving body;

[0008] A sealing assembly is provided at one end of the driving body provided with the driving tip, comprising a sealing sleeve sleeved at the end of the driving body and movably connected to the driving body, and a sealing member provided on the sealing sleeve;

[0009] Among them, a plurality of driving pins are provided on one side of the driving center, and the sealing sleeve is fitted to the driving center and the driving pins. When the driving center and the driving pins process the workpiece, the sealing sleeve wraps the gap between the driving pins and the driving body.

[0010] In summary, according to the processing device for preventing center hole crushing proposed by the utility model, by putting a sealing sleeve on the driving body and covering the gap between the driving pin and the driving body, it is prevented that iron filings enter the interior of the device during the processing, causing damage to the device and scrapping of the workpiece. Specifically, the top of the sealing sleeve first fits the driving top and covers the gap between the driving top and the driving body. When the driving rod pushes the driving pin to emerge from between the driving top and the driving body, due to the elastic material of the sealing sleeve, it always covers the gap between the driving pin and the driving body, thereby preventing iron filings from entering the interior of the device during the processing.

[0011] Furthermore, the driving body is provided with a plurality of slide grooves along its axial direction for connecting with the sealing sleeve, and the sealing sleeve is correspondingly provided with a plurality of slide arms, and the slide arms are inserted into the slide grooves.

[0012] Furthermore, the slide groove and the slide arm are connected via an elastic member.

[0013] Furthermore, the slide groove is provided with a limit pin along the radial direction of the driving body, and the limit pin passes through the limit hole on the slide arm.

[0014] Furthermore, a sealing member is provided on the outer periphery of the sealing sleeve along the axial direction of the driving body to cover the limiting hole, and the sealing member is connected to the driving body via a first fastener.

[0015] Furthermore, a second fastener is provided in the driving body along its radial direction, and the second fastener penetrates the driving body and is clamped on the circumferential surface of the driving tip.

[0016] Furthermore, one end of the driving pin abuts against the driving rod, and the other end is flush with the end surface of the driving body.

[0017] Furthermore, the driving tip does not contact the driving rod.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a cross-sectional view of a processing device for preventing center hole from being crushed in one embodiment of the utility model;

[0021] Figure 2 Schematic diagram of the processing device for preventing center hole from being crushed.

[0022] Component symbol description:

[0023] Driving body 110, slide groove 111, driving rod 120, driving top 130, sealing sleeve 210, sliding arm 211, sealing member 220, elastic member 300, limiting pin 400, first fastener 510, second fastener 520, driving pin 600, claw 700, shaft workpiece 800. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central 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 a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] See also Figure 1-Figure 2 , which is a schematic diagram of the structure of a processing device for preventing center hole crushing provided in one embodiment of the utility model, the processing device for preventing center hole crushing comprises a driving component and a sealing component sleeved on one end of the driving component, wherein:

[0028] In order to facilitate the processing of the shaft workpiece 800, the driving assembly includes a driving body 110, a driving rod 120 and a driving center 130 respectively disposed at both ends of the driving body 110, and a driving pin 600 is also disposed at one end of the driving body 110 provided with the driving center 130, the driving rod 120 does not contact the driving center 130, and the end of the driving pin 600 away from the port of the driving body 110 is connected to the driving rod 120. When the device is not processing, the end of the driving pin 600 away from the driving rod 120 is retracted into the driving body 110.

[0029] It is worth noting that the end of the driving pin 600 away from the driving rod 120 is sharpened for cutting the shaft workpiece 800. At the same time, in order to prevent the driving tip 130 from moving in the driving body 110, a second fastener 520 is provided along the radial direction of the driving body 110. The second fastener 520 penetrates the driving body 110 along the radial direction and abuts against the circumferential surface of the driving tip 130 to fix the driving tip 130, so as to avoid shaking when processing the shaft workpiece 800, thereby causing the shaft workpiece 800 to be processed unqualified.

[0030] In the conventional device, since there is a gap between the driving pin 600 and the driving body 110, when the driving pin 600 is used to process the shaft workpiece 800, iron filings enter the device along the gap, causing damage to the internal tooling, causing the center hole of the shaft workpiece 800 to be crushed, and then crushing the shaft workpiece 800, so that the shaft workpiece 800 needs to be repaired or scrapped. In order to avoid the above problems, a sealing assembly is provided at one end of the driving body 110 where the driving tip 130 is provided, so as to cover the gap without affecting the processing efficiency. The sealing assembly includes a sealing sleeve 210 that is sleeved on the end of the driving body 110 and movably connected to the driving body 110, and a sealing member 220 provided on the sealing sleeve 210. The sealing sleeve 210 is sleeved on one end of the driving body 110 where the driving tip 130 is provided, and is movably connected to the driving body 110 through a plurality of sliding arms 211 extending therefrom. At the same time, in order to connect the sealing sleeve 210, a plurality of sliding grooves 111 for use with the sliding arms 211 are provided along the axial direction of the outer side of the driving body 110. When the sliding arms 211 are inserted into the sliding grooves 111, the top of the sealing sleeve 210 just fits against the driving tip 130 and covers the gap between the driving tip 130 and the driving body 110.

[0031] In order to connect the sealing sleeve 210 and the driving body 110, an elastic member 300 is further provided between the slide groove 111 and the slide arm 211, and the sealing sleeve 210 is pushed axially along the driving body 110. At this time, the elastic member 300 is compressed, and the gap between the driving tip 130 and the driving body 110 is exposed. At this time, the driving rod 120 pushes the driving pin 600 to make the driving pin 600 extend out of the gap. At this time, the sealing sleeve 210 is released. Due to the restoring force of the elastic member 300, the sealing sleeve 210 is reset to cover the gap between the driving pin 600 and the driving body 110, thereby preventing iron filings from entering the interior of the device through the gap during processing and reducing the risk of damage to the device.

[0032] Furthermore, there is a risk of the sealing sleeve 210 and the driving body 110 falling off when connected only by the elastic member 300. Therefore, in order to avoid this, a stop pin 400 is provided in the slide groove 111 along the radial direction of the driving body 110. One end of the stop pin 400 is fixed to the inner wall of the slide groove 111, and the other end is inserted into the slide arm 211. At the same time, in order to ensure the function of the sealing sleeve 210 to slide axially along the driving body 110, a stop hole is provided on the slide arm 211. The diameter of the stop hole is larger than the diameter of the stop pin 400, so as to provide sufficient activity space for the sealing sleeve 210 to move axially along the side of the driving body 110.

[0033] It is worth noting that, due to the existence of the limiting hole, in order to prevent iron filings from entering the limiting hole, which makes it difficult for the sealing sleeve 210 to move along the axis normally, a sealing member 220 is further provided on the side of the sealing sleeve 210 away from the limiting pin 400. The sealing member 220 covers the limiting hole and is fixed to the driving body 110 through the first fastener 510. In order to achieve the sealing effect, the diameter of the sealing member 220 is larger than the diameter of the limiting hole, so as to ensure that when the sealing sleeve 210 slides axially along the side of the driving body 110, the sealing member 220 always covers the limiting hole to prevent iron filings from entering.

[0034] The process of using the device is as follows:

[0035] When the shaft workpiece 800 is fixed, the sealing sleeve 210 is pushed to squeeze the elastic member 300. The sealing sleeve 210 maintains a constant pressure on the shaft workpiece 800 under the action of the elastic member 300, and is flat against the end face of the shaft workpiece 800 without gaps, effectively covering the driving tip 130 and the driving pin 600, preventing iron filings from splashing onto the surface of the driving tip 130 and the driving pin 600, thereby preventing the center hole from being crushed. When machining the lower end of the shaft workpiece 800, due to the large cutting force, the driving pin 600 does not work, and the driving claw 700 clamps the outer circle of the shaft workpiece 800, and then drives the shaft workpiece 800 to rotate, completing the machining of the lower end of the shaft workpiece 800. When machining the upper end of the shaft workpiece 800, the driving rod 120 is pushed, and then the driving pin 600 is pushed to embed the lower end cutting edge into the surface of the shaft workpiece 800, and the shaft workpiece 800 is driven to rotate with the machine tool spindle to complete the cutting of the upper end. Due to the covering effect of the sealing sleeve 210, iron filings cannot enter the interior of the device, thereby reducing the risk of device damage and scrapping of the shaft workpiece 800.

[0036] In summary, according to the processing device for preventing center hole crushing proposed by the utility model, by putting a sealing sleeve on the driving body and covering the gap between the driving pin and the driving body, it is prevented that iron filings enter the interior of the device during the processing, causing damage to the device and scrapping of the workpiece. Specifically, the top of the sealing sleeve first fits the driving top and covers the gap between the driving top and the driving body. When the driving rod pushes the driving pin to emerge from between the driving top and the driving body, due to the elastic material of the sealing sleeve, it always covers the gap between the driving pin and the driving body, thereby preventing iron filings from entering the interior of the device during the processing.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A processing device for preventing center hole crushing, characterized in that: The processing device for preventing the center hole from being crushed comprises: The driving assembly comprises a driving body, a driving rod and a driving tip respectively arranged at two ends of the driving body; A sealing assembly is provided at one end of the driving body provided with the driving tip, comprising a sealing sleeve sleeved at the end of the driving body and movably connected to the driving body, and a sealing member provided on the sealing sleeve; Among them, a plurality of driving pins are provided on one side of the driving center, and the sealing sleeve is fitted to the driving center and the driving pins. When the driving center and the driving pins process the workpiece, the sealing sleeve wraps the gap between the driving pins and the driving body.

2. The processing device for preventing center hole crushing according to claim 1 is characterized in that: The driving body is provided with a plurality of slide grooves for connecting with the sealing sleeve along its axial direction, and the sealing sleeve is correspondingly provided with a plurality of slide arms, and the slide arms are inserted into the slide grooves.

3. The processing device for preventing center hole crushing according to claim 2 is characterized in that: The slide slot and the slide arm are connected via an elastic member.

4. The processing device for preventing center hole crushing according to claim 3 is characterized in that: The slide groove is provided with a limit pin along the radial direction of the driving body, and the limit pin passes through the limit hole on the slide arm.

5. The processing device for preventing center hole crushing according to claim 4 is characterized in that: A sealing member is provided on the outer periphery of the sealing sleeve along the axial direction of the driving body to cover the limiting hole, and the sealing member is connected to the driving body through a first fastener.

6. The processing device for preventing center hole crushing according to claim 1 is characterized in that: A second fastener is arranged in the driving body along its radial direction, and the second fastener penetrates the driving body and is clamped on the circumferential surface of the driving top.

7. The processing device for preventing center hole crushing according to claim 1 is characterized in that: One end of the driving pin abuts against the driving rod, and the other end is flush with the end surface of the driving body.

8. The processing device for preventing center hole crushing according to claim 7 is characterized in that: The driving tip does not contact the driving rod.

Images