Special machine tool for punching center hole of half shaft

Abstract

The utility model relates to a special machine tool for punching a central hole of a half shaft, which comprises a bottom plate, and a rear clamping mechanism and a front clamping mechanism are respectively arranged at two ends of the bottom plate; a sliding groove is formed in one end of the bottom plate, and the front clamping mechanism can slide on the sliding groove. The front clamping mechanism comprises a positioning seat and a synchronous clamp mechanism located on the positioning seat and used for clamping the front end A-1 of a shaft right ahead. A supporting seat b is arranged at the front end of the positioning seat, and front hydraulic centering chucks are symmetrically arranged on the two sides of the supporting seat b and used for clamping the front end A-1 of a shaft from the two sides; the special machine tool for punching the center hole of the half shaft has the advantages of being convenient to clamp, accurate in positioning and capable of conducting bidirectional machining at the same time.

Description

Technical Field

[0001] The utility model relates to a special machine tool for drilling a center hole of a half shaft. Background Art

[0002] The shafts of many products are of special shape and are no longer a single circular structure. If both ends of the special-shaped shaft need to be processed, then the fixation of the shaft is a problem, because the special-shaped end of the special-shaped shaft cannot be directly clamped by ordinary clamping, and ordinary clamping cannot effectively fix the special-shaped end. In addition, ordinary tooling and fixtures can only process the other end after fixing the end, especially when processing the center hole of the shaft. Since most ordinary tooling and fixtures are overall covered, the tool at the covered end cannot process the shaft through the tooling, so only one end can be processed, and then the workpiece is removed and reinstalled, and then the other end is processed. Such repeated clamping is prone to the problem of inconsistent center points. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the prior art, thereby providing a special machine tool for drilling a half-shaft center hole, which is convenient to clamp, accurately positioned, and capable of simultaneously performing bidirectional processing.

[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0005] The utility model discloses a special machine tool for drilling a center hole of a half shaft, comprising a base plate, on both ends of which a rear clamping mechanism and a front clamping mechanism are respectively arranged; a slide groove is provided at one end of the base plate, and the front clamping mechanism can slide on the slide groove; the front clamping mechanism comprises a positioning seat, and a synchronous clamping mechanism located on the positioning seat is used to clamp the front end A-1 of the shaft in the front; a support seat b is provided at the front end of the positioning seat, and front hydraulic centering chucks are symmetrically provided on both sides of the support seat b to clamp the front end A-1 of the shaft from both sides.

[0006] Preferably, an elastic positioning V-block is provided on the support seat b.

[0007] Preferably, the synchronous clamp mechanism includes a support block symmetrically fixed above the positioning seat, a symmetrical V-shaped clamp with one end embedded in the support block, a screw connecting the V-shaped clamp and the support block, and a spring sleeved on the screw.

[0008] Preferably, the positioning seat is a "7"-shaped structure with a transverse plate extending transversely forward.

[0009] Preferably, a sliding seat is provided below the support seat b.

[0010] Preferably, a positioning cylinder is provided on the sliding seat and at the front end of the support seat b, and an end support is provided obliquely above the positioning cylinder.

[0011] Preferably, a pre-positioning elastic support seat is provided on the bottom plate near the end of the slide groove.

[0012] Preferably, the rear clamping mechanism includes a base, rear hydraulic centering chucks symmetrically arranged on the base, and a support seat a located between the two rear hydraulic centering chucks.

[0013] Preferably, the end surfaces of the rear hydraulic centering chuck and the front hydraulic centering chuck in contact with the workpiece A are both V-shaped surfaces.

[0014] The beneficial effects of the utility model are:

[0015] The V-type clamp adopts hydraulic clamp, which has stable and reliable positioning and strong clamping force. The front and rear hydraulic clamps are very convenient to install and take out. At the same time, an elastic positioning V-block is adopted at the front end of the shaft, and the tool can pass through the middle of the V-block to process the center hole. In this way, the center hole can be processed at both ends at the same time, avoiding repeated clamping of the same workpiece, resulting in inconsistent positioning, and ensuring the accuracy of processing. In addition, this tooling can be directly installed on the lathe, suitable for various types of lathes, and has a wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2-3 It is a partial enlarged view of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the utility model;

[0020] Figure 5-6 It is a partial enlarged view of the utility model.

[0021] In the figure: 1-base plate, 2-rear clamping mechanism, 3-front clamping mechanism, 4-power head mounting frame, 1.1-slideway, 2.1-base, 2.2-rear hydraulic centering chuck, 2.3-support seat a, 3.1-front hydraulic centering chuck, 3.2-synchronous clamping mechanism, 3.3-sliding seat, 3.4-support seat b, 3.5-elastic positioning V block, 3.6-cross plate, 3.7-positioning seat, 3.8-positioning cylinder, 3.9-end support, 3.10-pre-positioning elastic support seat, 3.21-support block, 3.22-screw, 3.23-spring, 3.24-V-type clamp, A-workpiece, A-1-front end of the shaft, A-2-rear end of the shaft DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] like Figure 1-2 As shown, the special machine tooling for drilling the center hole of the half shaft is mainly used to be installed on the CNC lathe to clamp the workpiece A once, so that the workpiece A can be processed for the center hole; the workpiece A is a shaft with different structures at both ends, and the front end A-1 of the shaft is a U-shaped structure, and the center hole needs to be processed in the inner concave part of the U-shape; the rear end A-2 of the shaft is the flat end of an ordinary circular shaft, and the center hole needs to be processed after the end face is milled at the flat surface; because the workpiece A is not a conventional one-piece cylindrical structure shaft, the front end A-1 of the shaft needs to be accurately positioned when processing the center hole, and the tooling cannot hinder drilling.

[0024] It includes a base plate 1, and a rear clamping mechanism 2 and a front clamping mechanism 3 are respectively arranged at both ends of the base plate 1; a slide groove 1.1 is opened at one end of the base plate 1, and the front clamping mechanism 3 can slide on the slide groove 1.1; the front clamping mechanism 3 includes a positioning seat 3.7, and a synchronous clamping mechanism 3.2 located on the positioning seat 3.7 is used to clamp the front end A-1 of the shaft in the front; a support seat b3.4 is arranged at the front end of the positioning seat 3.7, and front hydraulic centering chucks 3.1 are symmetrically arranged on both sides of the support seat b3.4 to clamp the front end A-1 of the shaft from both sides. Since the front end A-1 of the shaft is a U-shaped structure, after the synchronous clamping mechanism 3.2 clamps the two ends from the front, the front hydraulic centering chuck 3.1 is fixed and clamped from both sides, so that the multi-directional clamping of the front end A-1 of the shaft can be ensured.

[0025] The support seat b3.4 is provided with an elastic positioning V-block 3.5; specifically, the elastic positioning V-block 3.5 is just stuck in the U-shaped groove of the front end A-1 of the shaft, against the end face and both sides, giving a fixed force to the front end of the shaft from the inside, and combined with the external fixation of the synchronous clamping mechanism 3.2 and the front hydraulic centering chuck 3.1, the front end of the shaft is given a comprehensive fixation; and since the elastic positioning V-block 3.5 is a V-shaped structure, the middle is empty, so when processing the center hole of the front end A-1 of the shaft, the tool can directly pass through the middle part of the V-shape to process the center hole, and the processing will not be affected by the tooling, and it can also be used to ensure the position of the center hole to avoid deviation in processing.

[0026] See also Figure 6 As shown, the synchronous clamp mechanism 3.2 includes a support block 3.21 symmetrically fixed above the positioning seat 3.7, and a symmetrical V-clamp 3.24 with one end embedded in the support block 3.21, and a screw 3.22 connecting the V-clamp 3.24 and the support block 3.21 and a spring 3.23 sleeved on the screw 3.22; specifically, the V-clamp 3.24 is fixed to the support block 3.21 by the screw 3.22, and then after the spring 3.23 is sleeved on the screw 3.22, there is an elastic effect, and there is an elastic force when the V-clamp 3.24 and the front end A-1 of the shaft are clamped, and a fine adjustment in length can be performed, that is, when the tolerance of the front end of the shaft is slightly shorter, the V-clamp 3.24 can also automatically clamp forward due to the elasticity.

[0027] The positioning seat 3.7 is a "7"-shaped structure, with a transverse plate 3.6 extending transversely forward; further, the support block 3.21 is fixed on the transverse plate 3.6.

[0028] A sliding seat 3.3 is arranged below the support seat b3.4; more specifically, the bottom of the sliding seat 3.3 is clamped on the slide groove 1.1.

[0029] A positioning cylinder 3.8 is provided on the sliding seat 3.3 and the front end of the supporting seat b3.4, and an end support 3.9 is provided obliquely above the positioning cylinder 3.8; specifically, a telescopic rod is provided on the positioning cylinder 3.8, and the end support 3.9 is connected to the telescopic rod, so that the height position of the end support 3.9 can be quickly adjusted through the positioning cylinder 3.8, and the front end of the shaft can be quickly positioned to ensure the clamping of the subsequent tooling and the precise position processing of the center hole.

[0030] On the bottom plate 1, a pre-positioning elastic support seat 3.10 is arranged near the end of the slide groove 1.1; in this way, when the front end of the shaft is put in, there will be a pre-positioning point, which can better position and install the front end of the shaft.

[0031] See also Figure 3As shown, the rear clamping mechanism 2 includes a base 2.1, and rear hydraulic centering chucks 2.2 symmetrically arranged on the base 2.1, and a support seat a2.3 located between the two rear hydraulic centering chucks 2.2; further, the support seat a2.3 is fixed above the base 2.1, and the rear hydraulic centering chucks 2.2 are symmetrically located on both sides of the support seat a2.3; the support seat a2.3 is used to support the rear end A-2 of the shaft; and the rear hydraulic centering chucks 2.2 clamp the rear end of the shaft from both sides; in this way, the rear clamping mechanism 2 clamps the rear end of the shaft, and the front clamping mechanism 3 clamps the irregular front end of the shaft, so that the workpiece A can be fixed and the center hole can be processed at the same time.

[0032] The end faces of the rear hydraulic centering chuck 2.2 and the front hydraulic centering chuck 3.1 that contact the workpiece A are both V-shaped surfaces, so that the shaft can be fixed in the middle of the two V-shaped surfaces to ensure that there will be no jumping during clamping.

[0033] The beneficial effects of the utility model are:

[0034] The V-type clamp adopts hydraulic clamp, which has stable and reliable positioning and strong clamping force. The front and rear hydraulic clamps are very convenient to install and take out. At the same time, an elastic positioning V-block is adopted at the front end of the shaft, and the tool can pass through the middle of the V-block to process the center hole. In this way, the center hole can be processed at both ends at the same time, avoiding repeated clamping of the same workpiece, resulting in inconsistent positioning, and ensuring the accuracy of processing. In addition, this tooling can be directly installed on the lathe, suitable for various types of lathes, and has a wide applicability.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A special machine tool for drilling the center hole of the half shaft, characterized by: The invention comprises a base plate (1), and a rear clamping mechanism (2) and a front clamping mechanism (3) are respectively arranged at both ends of the base plate (1); a slide groove (1.1) is opened at one end of the base plate (1), and the front clamping mechanism (3) can slide on the slide groove (1.1); the front clamping mechanism (3) comprises a positioning seat (3.7), and a synchronous clamping mechanism (3.2) located on the positioning seat (3.7) is used to clamp the front end A-1 of the shaft in the front; a support seat b (3.4) is arranged at the front end of the positioning seat (3.7), and front hydraulic centering chucks (3.1) are symmetrically arranged on both sides of the support seat b (3.4) to clamp the front end A-1 of the shaft from both sides.

2. The special machine tool for drilling the center hole of the half shaft according to claim 1 is characterized in that: The support seat b (3.4) is provided with an elastic positioning V block (3.5).

3. The special machine tool for drilling the center hole of the half shaft according to claim 2 is characterized in that: The synchronous clamp mechanism (3.2) comprises a support block (3.21) symmetrically fixed above a positioning seat (3.7), a symmetrical V-shaped clamp (3.24) with one end embedded in the support block (3.21), a screw (3.22) connecting the V-shaped clamp (3.24) and the support block (3.21), and a spring (3.23) sleeved on the screw (3.22).

4. The special machine tool for drilling the center hole of the half shaft according to claim 3 is characterized in that: The positioning seat (3.7) is a "7"-shaped structure and has a transverse plate (3.6) extending transversely forward.

5. The special machine tool for drilling the center hole of the half shaft according to claim 2 is characterized in that: A sliding seat (3.3) is arranged below the supporting seat b (3.4).

6. The special machine tool for drilling the center hole of the half shaft according to claim 5 is characterized in that: A positioning oil cylinder (3.8) is arranged on the sliding seat (3.3) and at the front end of the supporting seat b (3.4), and an end support (3.9) is arranged obliquely above the positioning oil cylinder (3.8).

7. The special machine tool for drilling the center hole of the half shaft according to claim 2 is characterized in that: A pre-positioning elastic support seat (3.10) is arranged on the bottom plate (1) at a position close to the end of the slide groove (1.1).

8. The special machine tool for drilling the center hole of a half shaft according to claim 1 is characterized in that: The rear clamping mechanism (2) comprises a base (2.1), rear hydraulic centering chucks (2.2) symmetrically arranged on the base (2.1), and a support seat a (2.3) located between the two rear hydraulic centering chucks (2.2).

9. The special machine tool for drilling the center hole of the half shaft according to claim 8, characterized in that: The end surfaces of the rear hydraulic centering chuck (2.2) and the front hydraulic centering chuck (3.1) that are in contact with the workpiece A are both surfaces of V-shaped structure.

Images