Spatial multi-oil-hole machining device for rocker arm shaft of automobile engine

Abstract

The utility model discloses a space multi-oil-hole machining device for an automobile engine rocker arm shaft and belongs to the field of automobile engine part manufacturing. The head end of the clamp body is connected with a four-axis numerical control dividing head of a machining center of a numerical control machine tool through a directional seat, a tip of a four-axis tailstock abuts against a handle center hole in the tail end of the clamp body, a positioning mandrel capable of positioning a machined part in a radial penetrating mode is arranged on the clamp body, a clamping block is arranged at the tail end of the positioning mandrel, and a directional pin is arranged on a handle at the head end of the clamp body. A plurality of V-shaped grooves are formed in the clamp body, a directional groove is formed in the directional seat, and adjusting cushion blocks are arranged in the V-shaped grooves of the clamp body. After a workpiece is clamped and fixed, the whole device can make the workpiece fully utilize the characteristics of accurate and reliable precision of a numerical control system and a numerical control dividing head, so that a numerical control machine tool rotates the workpiece to a proper machining angle, the problem that multiple sets of traditional complex drill jigs are needed for multi-space oil holes is solved, the device is small and exquisite, the manufacturing cost is low, and the machining efficiency is high. And the production efficiency is improved and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engine parts manufacturing, in particular to a processing device for multiple oil holes in short and thick rocker arm shaft spaces of automobile engines. Background Art

[0002] In the manufacturing of automobile parts, many workpieces need to be processed with space holes, especially the space oil holes of the rocker shaft of the automobile engine. Since the direction of the oil holes is not on a plane, but presents multiple angles in space, in the existing technology, one set of drilling jigs is used to drill one space oil hole, and multiple space oil holes require multiple drilling jigs. There are difficulties in cost control and processing accuracy, and there is a certain rigid dependence on the technical requirements of equipment and drilling jigs.

[0003] The short and thick rocker arm shaft of the automobile engine needs to be processed with several spatial oil holes on the radial direction of the shaft rod. Since the oil holes are irregularly distributed and some of the oil holes are close to each other, when processing the short and thick rocker arm shaft, it will be affected by many factors such as the different angles of the workpiece fixation, the uniformity of the tool and the material, the chip removal pressure, etc., resulting in multiple shutdowns to clamp the workpiece. This non-human problem exists mainly because the device for fixing the workpiece cannot automatically adjust the angle according to the processing requirements. For this reason, the existing short and thick rocker arm shaft of the engine has the defects of time-consuming, large number of tooling, low production efficiency, and high manufacturing cost. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the invention of the utility model is to provide a spatial multi-oil hole processing device for a rocker arm shaft of an automobile engine, so as to achieve the purpose of completing the spatial multi-oil hole processing by clamping the rocker arm shaft once.

[0005] To achieve the above-mentioned purpose of the invention, the processing device of the utility model includes a four-axis CNC dividing head of a machining center, a four-axis tailstock, a clamping body and a positioning mandrel; the head end of the clamping body is connected to the four-axis CNC dividing head of the machining center of the CNC machine tool through an orientation seat, the top of the four-axis tailstock presses against the center hole of the shank at the tail end of the clamping body, the clamping body is provided with a positioning mandrel that radially penetrates and can position the workpiece, and the end of the positioning mandrel is provided with a clamping block for clamping the workpiece.

[0006] Furthermore, a directional pin is provided on the handle at the head end of the clamp body.

[0007] Furthermore, the clamp body is provided with a plurality of V-grooves for placing workpieces; the V-grooves are symmetrically distributed in pairs on the upper and lower sides of the clamp body, and each positioning mandrel penetrates the clamp body radially along the center of the V-grooves symmetrically distributed on the upper and lower sides of the clamp body.

[0008] Furthermore, the positioning mandrel passes through the reference hole of the workpiece, and the clamping block clamps the workpiece in the V-shaped groove of the clamping body with a locking nut.

[0009] Furthermore, the orientation seat and the four-axis CNC dividing head of the machining center are clamped and fixed by a cylindrical table chuck of the four-axis CNC dividing head of the machining center.

[0010] Furthermore, the orientation seat is provided with an orientation groove for clamping the orientation pin.

[0011] Furthermore, an adjustment pad for adjusting the axis of the workpiece is provided in the V-shaped groove of the clamp body.

[0012] During processing, first insert the handle of the front end of the clamp into the hole of the directional seat until the directional pin is inserted into the directional groove on the directional seat, and then the four-axis tailstock is pressed against the center hole of the rear end of the clamp. The CNC machine tool controls the clamp to rotate 360 ​​degrees around its longitudinal axis and lock it in position through the four-axis CNC dividing head of the machining center; then, after the workpiece is inserted into the positioning mandrel along the reference hole, the clamping block is inserted and the workpiece is clamped in the V-groove of the clamp with a locking nut, so that the workpiece is pressed and fixed on the adjusting pad and self-aligned, and the workpieces of other stations are loaded in turn. Under the control of the rotation command of the CNC system of the CNC machine tool, the four-axis CNC dividing head of the machining center drives the clamp to rotate to the position of the hole that needs to be processed in the workpiece, and the CNC machine tool completes the processing of the spatial multi-oil holes of the short and thick rocker arm shaft of the automobile engine on a set of fixtures.

[0013] Compared with the prior art, the utility model adopts a scientific combination of relevant components such as a four-axis CNC dividing head, a clamping base, a four-axis tailstock, an orientation seat, an adjustment pad, a positioning mandrel, etc. of a machining center. When the device is used, after the workpiece is clamped and fixed, the overall device can make full use of the characteristics of the CNC system and the CNC dividing head, which are accurate and reliable, so that the CNC machine tool can rotate the workpiece to a suitable processing angle, thereby solving the problem that multiple sets of traditional complex drilling dies are required for multi-space oil holes. The equipment is compact and has low manufacturing cost, which is conducive to improving production efficiency and reducing manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram showing the structure of the utility model.

[0015] Figure 2 The utility model is a schematic diagram showing the application structure of the utility model.

[0016] In the figure: 1. Four-axis tailstock; 2. Clamping block; 3. Adjusting pad; 4. Clamping base; 5. Workpiece; 6. Locking nut; 7. Positioning mandrel; 8. Orienting pin; 9. Orienting seat; 10. Four-axis CNC dividing head of machining center. DETAILED DESCRIPTION

[0017] like Figure 1 , Figure 2 As shown, the processing device of the utility model mainly includes a four-axis CNC dividing head 10 of a processing center, a four-axis tailstock 1, a clamping body 4 and a positioning mandrel 7.

[0018] The orientation seat 9 and the four-axis CNC dividing head 10 of the machining center are clamped and fixed by the cylindrical table chuck of the four-axis CNC dividing head 10 of the machining center. The head end of the clamp body 4 is connected to the four-axis CNC dividing head 10 of the machining center of the CNC machine tool through the orientation seat 9. The handle at the head end of the clamp body 4 is provided with an orientation pin 8, and the orientation seat 9 is provided with an orientation groove for clamping the orientation pin 8. The handle of the clamp body 4 is inserted into the hole of the orientation seat 9 until the orientation pin 8 is clamped into the orientation groove on the orientation seat 9; the top of the four-axis tailstock 1 presses the center hole of the handle at the tail end of the clamp body 4; the clamp body 4 is provided with multiple A V-groove for placing the workpiece 5, the V-groove is symmetrically distributed in pairs on the upper and lower sides of the clamp body 4, and each positioning spindle 7 penetrates the clamp body 4 along the center radial direction of the V-groove symmetrically distributed on the upper and lower sides of the clamp body 4; when the V-groove of the clamp body 4 is worn, the adjusting pad 3 can be installed on the two inclined surfaces of the V-groove to adjust the axis of the workpiece 5; the end of the positioning spindle 7 is provided with a clamping block 2 for clamping the workpiece 5, the positioning spindle 7 passes through the reference hole of the workpiece 5, and the clamping block 2 clamps the workpiece 5 in the V-groove of the clamp body 4 with a locking nut 6.

[0019] The process of machining multiple oil holes in the short and thick rocker arm shaft of an automobile engine is as follows:

[0020] (a) First, insert the handle at the head end of the clamp body 4 into the hole of the orientation seat 9 until the orientation pin 8 is inserted into the orientation groove on the orientation seat 9, and then press the four-axis tailstock 1 against the center hole at the tail end of the clamp body 4;

[0021] (b) The four-axis CNC indexing head 10 of the machining center controls the clamp body 4 to rotate 360 ​​degrees around its longitudinal axis and lock it in position through the control instructions of the CNC machine tool;

[0022] (c) When clamping the workpiece 5, loosen the locking nut 6 and remove the clamping block 2. After inserting the workpiece 5 into the positioning mandrel 7 along the reference hole, insert the clamping block 2 and clamp the workpiece 5 in the V-groove of the clamping body 4 with the locking nut 6, so that the workpiece 5 is pressed and fixed on the adjustment pad 3 and self-aligned. Then, load the workpieces 5 of other stations in turn and clamp them with the clamping block 2 and the locking nut 6;

[0023] (d) Under the control of the rotation command of the CNC system of the CNC machine tool, the four-axis CNC indexing head 10 of the machining center drives the clamp body 4 to rotate to the position of the hole to be machined on the workpiece 5. The CNC machine tool completes the machining of the spatial multiple oil holes of the short and thick rocker arm shaft of the automobile engine at one time.

[0024] The utility model has a rigid connection between the clamp body 4 and the four-axis CNC dividing head 10 of the machining center. At the same time, an adjustment pad 3 is provided in the V-shaped groove of the clamp body 4, so that the workpiece 5 can be processed with corresponding spatial oil holes at different stations according to the process quality requirements without deviation, and the phenomenon of mutually offset holes can be avoided. In the utility model, the clamp body 4 can play the role of accurately positioning the workpiece 5 as a whole, and the adjustment pad 3 can play the role of fine-tuning and balancing the axis of the workpiece 5. Since the clamp body 4 is provided with multiple stations, it can effectively avoid using multiple sets of traditional complex drilling jigs to affect the processing efficiency. Through a set of clamp bodies 4, the problem of processing multiple spatial oil holes in the short and thick rocker arm shaft of the automobile engine is solved.

Claims

1. A device for machining multiple oil holes in a rocker shaft of an automobile engine, characterized in that: The processing device comprises a four-axis CNC indexing head (10) of a processing center, a four-axis tailstock (1), a clamping body (4) and a positioning mandrel (7); the head end of the clamping body (4) is connected to the four-axis CNC indexing head (10) of the processing center of a CNC machine tool through an orientation seat (9); the top of the four-axis tailstock (1) presses against the center hole of the shank at the tail end of the clamping body (4); the clamping body (4) is provided with a positioning mandrel (7) which radially penetrates and can position a workpiece; the end of the positioning mandrel (7) is provided with a clamping block (2) for clamping a workpiece (5).

2. The multi-oil hole machining device for the rocker shaft of an automobile engine according to claim 1, characterized in that: A directional pin (8) is provided on the handle at the head end of the clamp body (4).

3. The device for machining multiple oil holes in the rocker shaft of an automobile engine according to claim 1, characterized in that: The clamp body (4) is provided with a plurality of V-shaped grooves for placing workpieces (5); the V-shaped grooves are symmetrically distributed in pairs at the upper and lower parts of the clamp body (4), and each positioning mandrel (7) penetrates the clamp body (4) along the center radial direction of the V-shaped grooves symmetrically distributed at the upper and lower parts of the clamp body (4).

4. The device for machining multiple oil holes in the rocker shaft of an automobile engine according to claim 1, characterized in that: The positioning mandrel (7) passes through the reference hole of the workpiece (5), and the clamping block (2) clamps the workpiece (5) in the V-shaped groove of the clamping body (4) using a locking nut (6).

5. The device for machining multiple oil holes in the rocker shaft of an automobile engine according to claim 1, characterized in that: The orientation seat (9) and the four-axis numerical control dividing head (10) of the machining center are clamped and fixed by a cylindrical table chuck of the four-axis numerical control dividing head (10) of the machining center.

6. The device for machining multiple oil holes in the rocker shaft of an automobile engine according to claim 1, characterized in that: The orientation seat (9) is provided with an orientation groove for clamping the orientation pin (8).

7. The device for machining multiple oil holes in the rocker shaft of an automobile engine according to claim 1, characterized in that: An adjustment pad (3) for adjusting the axis of the workpiece (5) is provided in the V-shaped groove of the clamp body (4).

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