JPH0326408A - Inclined hole machining device for cylinder block - Google Patents

Abstract

PURPOSE:To facilitate mixed flow of machining lines by adjusting height through fore and aft movement of a drill unit with a mobile member having inclined face, and installing a slide mechanism to move the drill unit to the left and right for the machining of a cylinder block with different pitch between bores. CONSTITUTION:The lower part 21b of a lower side member 21 constituting a mobile member 2 shifts to the fore and aft on a guide rail of a base 1. Guide rails 23 are installed on both side of the top surface 22a of an upper side member 22 to slidably support a slide mechanism 3, and adjust the position of a drill unit 4 to the fore and aft. The height of tips of drills 5A-5F can be set at one's option at a same position in the direction to the fore and aft. Furthermore, the slide mechanism 3 has a lower side member 31 moving above the guide rail 23 and an upper side member 32 movable in a direction orthogonal to it, so that both members 31, 32 are made of making relative displacement to move the drill unit 4 to the left and right. Therefore, those with different height or different pitch can be machined.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a diagonal hole machining device for forming diagonal holes between bores in a cylinder block by drilling.

(Prior Art) In general, the positions between the bores of a cylinder block with a plurality of cylinder bores tend to become heat points because the water jacket formed around each cylinder bore is discontinuous, and the combustibility of the engine increases. Alternatively, it is unfavorable in terms of durability.

For this reason, conventionally, as shown in FIGS. 5 and 6, each cylinder bore 51, 51, . . .
Diagonal holes 60 are formed by drilling from both sides of the upper surface of the cylinder block 50 in the engine width direction so as to communicate with the water jackets 1 and 53 on the other side, respectively, at inter-bore positions 52 located between the cylinder blocks 50 and 52. Two oblique holes 60, 60
are communicated with each other at an intermediate position, and the position 52 between the bores is cooled by cooling water flowing through this X-shaped communication path.

By the way, in order to form a diagonal hole at a position between the bores by drilling, conventionally, a drill unit in which the same number of drills as the number of positions between the bores is arranged in a row with a cylinder bore bit (i.e., a pitch between the bores) is used. Using processing equipment,
Oblique holes were formed at positions between each bore in a single machining process.

(Category M that the invention seeks to solve) However, when attempting to form such a diagonal hole at a predetermined position and with an accurate inclination angle using a machining tool installed on the side of the machining line, , the arrangement pitch of each drill in the drill unit L is set accurately to the pitch between the bores of the cylinder block to be machined, and the L downward direction and left and right direction of each drill with respect to the physical structure (i.e., the machined surface) of the cylinder block are set accurately. It is necessary to set the relative position of the direction accurately.

Therefore, if such a diagonal hole is to be fabricated using a conventional machining method, a special machine that can only be used for cylinder blocks of specific specifications will inevitably be required.

1. Conventionally, this did not cause any problems because the line was predicated on a so-called dedicated line that only flowed shilling blocks of the same specifications.

However, in recent years, from the perspective of increasing the efficiency of machining lines, so-called mixed flow lines have been promoted, in which multiple types of cylinder blocks with different heights and bore sizes are mixed on the same machining line. Conventional methods are practically not applicable to mixed flow lines. That is, if the conventional method is to be applied to a mixed flow line, for example, multiple types of processing equipment equipped with drill units with different drill pitches and different set heights of the drill units may be arranged on the processing line, or the drill of the drill unit may be A possible method is to make the pitch variable and to make it movable in the vertical direction.

However, in the former case, the operating rate of the device decreases and it is difficult to arrange the device due to space considerations. In addition, in the latter case, the structure of the drill unit becomes complicated by providing a variable drill pitch mechanism, and when moving the drill unit in the -L downward direction, a gate-shaped guide mechanism is usually provided, which controls the entire device. -12 downward movement, but in this case, the device becomes large and difficult to place on the processing line.

Therefore, the present invention makes it possible to change the height of the drill unit without increasing the size of the device, and to change the drill pitch with a simple structure, thereby making it possible to change the drill pitch of different types with a single device. The object of this invention is to provide a cylinder block diagonal hole machining device that can form diagonal holes in two cylinder blocks.

(Means for Solving the Problems) In the present invention, as a specific means for solving the problems, the bores of a cylinder block having a plurality of cylinder bores are drilled diagonally from the upper surface of the bores A cylinder block diagonal hole machining device configured to form a diagonal hole in a cylinder block, the movable member being arranged so as to be slidable in the front-rear direction with respect to the base, and having a movable member that is tilted downwardly toward the front side in the sliding direction. While forming a surface, a slide mechanism that is movable in directions along and perpendicular to the slope is installed on the slope, and a plurality of drills are inserted into the slide mechanism at different degrees of frequency. The drill uni-soto is installed in a line according to the distribution pattern determined respectively corresponding to the cylinder bore bit of the cylinder block, and the respective arrangement patterns are overlapped with each other in the direction of the arrangement. -h
Do you want to record it? The drills should be parallel to each other, and the direction in which each drill should be installed should be upward.
2.It is characterized in that it is mounted so that it is parallel to the direction ε perpendicular to the direction of inclination of the inclined surface (7).

(Operations and Effects) According to the present invention having such a configuration, the following operations and effects can be obtained.

(1) The height of the drill unit can be adjusted by moving a movable member having an inclined surface in the front-rear direction and correspondingly moving the drill unit in the front-rear direction. Unlike the case where the height of the drill unit is adjusted using a portal frame, the present invention can be applied to drilling of multiple types of cylinder blocks having different height dimensions without increasing the size of the apparatus.

(2) It is equipped with a drill unit in which multiple drills are installed in multiple layout patterns and overlapped with each other, and this is movable laterally, so a group of drills can be arranged in one layout pattern. If drilling is performed between each bore of a specific cylinder block using a drill, drill groups arranged in other arrangement patterns will each enter the cylinder bore in a blank state, resulting in mutual interference with the cylinder block. In addition, when the type of cylinder block to be machined changes, the drill pitch can be easily changed by moving the drill unit. Multiple drill groups arranged in multiple layout patterns can be installed in a line. Even though it is configured with a drill unit, reliable and reliable work is possible due to simple operation.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 to 4.

1 and 2 show a diagonal hole machining device Z according to an embodiment of the present invention, which is disposed in a machining line of a cylinder block. This diagonal hole machining device Z is capable of forming diagonal holes at the positions between the bores in two types of cylinder blocks with different pitches between the bores (regardless of their height dimensions) in one process. The base l described later
A movable drill member 2, a slide mechanism 3, and a drill unit 4 are sequentially assembled in a vertically stacked state.

Base 1 The base 1 is placed on the side of the processing line, and its upper surface 1a extends substantially horizontally. And this top surface l
On the a side, guide rails 11 and If extending in the front-rear direction (direction perpendicular to the line direction of the processing line) are provided. Further, inside the base l, a drive mechanism l2 including a motor 13 for moving a movable member 2, which will be described later, in the front and back direction is arranged.

Movable member 2 The movable member 2 has a lower side member 2l whose upper surface 21a is an inclined surface, and an upper member 22 having an upper surface 22a and a lower surface 22b that are parallel to each other. The lower surface 22b of the upper member 22 is made to abut against each other, and these are fixed integrally. In the assembled state of the lower member 2I and the upper member 22, the upper surface 22a of the upper member 22 has an angle that matches the inclination angle of the diagonal hole to be formed (that is, in this implementation In the example, the upper surface 22a of this upper member 22 corresponds to the inclined surface in the claims).

The lower part 2lb of the lower member 2l is slidably fitted into the guide rail l1 of the base l, and is connected to the drive mechanism 12. Therefore, the movable member 2 can be moved in the front-back direction along the guide rail 1l of the base 1 by the drive mechanism 12.

Furthermore, guide rails 23.23 are formed on both sides of the upper surface 22a of the upper member 22, extending in the direction of inclination thereof. This guide rail 23.23 slidably supports a slide mechanism 3, which will be described later, and a motor 24 for driving the slide mechanism 3 is provided at an intermediate position of the guide rail 23.23. A drive mechanism (not shown) is arranged.

Slide mechanism 3 The slide mechanism 3 includes the guide rail 23. of the movable member 2.
The lower sliding member 3l is attached to the lower sliding member 3l so as to be movable in the inclination direction with respect to the lower sliding member 3l, and the lower sliding member 3l is attached in a direction perpendicular to the moving direction of the lower sliding member 3I (i.e., the above-mentioned processing It has two side sliding members 32 which are movably attached in a direction (parallel to the direction of the line). Soj7
The lower sliding member 31 of this slide mechanism 3 and Lfil
lI sliding member 32 {Also, the motor 24 provided on the movable member 2 side allows the movable member 2 to move in the direction of inclination of the guide rail 23 of the movable member 2, and the upper sliding member 3
2 is movable relative to the lower sliding member 31 by a drive mechanism (not shown) that drives the motor 33 r1.

Drill unit S=t 4 Is F drill unit 4 shown in Figure 2 or Figure 4? ,=show 4-
Six drill heads 41, 4.1, . The pitch (described later) is arranged in a pitch (described later). The drill unit 4 is movable in the front-rear direction and the left-right direction by the motors 24 and 33.

The drill heads 41, 4.1, etc. are rotated synchronously by a drive device (not shown) and moved in the axial direction by a motor 43 (as shown by the solid line in Figure t). position and the position shown by the chain line (?: No. 41')) to perform a predetermined drilling process. In each figure, the reference numeral 42 indicates each drill head 41.
．． 41. No. It is attached to .... Each drill 5A to 5F
Guide the drill guide, 44 is each drill head 41
, 41, . . .

Each of the above drill heads 41, 41. The relative arrangement of ... is set as follows. That is, as shown in FIG. 4, the drill heads 41, 41 . The five drills 5A to 5F attached to each of the three drills 5A to 5F located every other -. 5C, 5E and 5B
, 5D, and 5F are one drill group 6A and 6B, respectively.
Construct. Each drill group 6A. 6B are used for drilling holes in the cylinder block 50 having a specific pitch between the bores, and in this embodiment I4, each drill 5A, 5C, 5E of the first drill group 6A is a bit S.
, (i.e., for machining the cylinder block of the inter-bore bit S1), and each drill 50.5D of the second drill group 6B.
, 5th floor is pi=! (i.e., for machining the cylinder tab opening of the bore-to-bore bit S).

In this way, each drill head 41. ,41. For example, as shown in FIG. 4, when the relative spacing of When adding hc (row 1), each drill 5B, 5D . 5F is each cylinder pore 5l 51
・You will enter the area empty-handed.

Next, the operation and effects of this diagonal hole raising device Z will be explained.

This diagonal hole machining device Z, as shown in FIG.
The moving member 2 is moved from the position shown by the solid line in the figure to the position shown by the chain line (
Move to 2′, 2″) 1i・te drill unit}・4
By arbitrarily adjusting the height of the drill unit 1- and the longitudinal position of the drill unit 4 using the slide mechanism 3, the tip position of each drill 5A to 5F can be adjusted as indicated by the chain line in the same figure (represented by the chain line 5A'). ~5F', 5A~5F''), the height can be arbitrarily set in the lower direction at the same level in the rear direction of 11D.In other words, only the height dimension of the cylinder block can be set. In other words, this diagonal hole machining device Z can be applied to machining multiple types of Norinda blocks having different heights.

On the other hand, by moving the drill unit 4 in the left-right direction using the slide mechanism 3, the drill unit 4 can be applied to machining two types of cylinder blocks having different pitches between bores.

In this way, this diagonal hole drilling device Z can adjust the pitch between the bores (in other words, two different pitches between the bores) by adjusting the height using the movable drill bit 2 and adjusting the position of the drill unit 4 using the slide mechanism 3. It can be applied to machining of various types of cylinder blocks, and also to machining of various types of shilling blocks with regard to height. In addition, since the height of the drill units 1 and 4 is adjusted using the inclined surface, the height of the drill unit 4 is adjusted using the portal flange l3. This allows it to be made more compact. Therefore, by installing this cylinder block diagonal hole machining device Z in a machining line, it is possible to easily achieve mixed flow in the machining line without reducing the factory space due to an increase in the occupied area.

[Brief explanation of drawings]

Fig. 1 is a side view of the cylinder block diagonal hole machining device of the present invention, Fig. 2 is a view taken from the direction of arrows 1 and 1 in Fig. 1, Fig. 3 is an enlarged vertical cross-sectional view of Fig. The figure is an explanatory view of the arrangement of the drill, FIG. 5 is a plan view of a main part showing a method of forming an oblique hole in the cylinder block, and FIG. I...Base 2...Movable member 3...Slide mechanism 4...Drill units 5A to 5F...Drills 6A, 6B...Drill group 40...Unit main body 4l...・Drill head 50...Cylinder block 60 ・Oblique hole

Claims (1)

[Claims] 1. A cylinder block diagonal hole machining device that forms diagonal holes diagonally between the bores of a cylinder block having a plurality of cylinder bores by drilling from the top surface thereof, the cylinder block having a plurality of cylinder bores. A movable member disposed so as to be slidable in a direction has an inclined surface that slopes downward toward the front side in the sliding direction, and a movable member is movable on the inclined surface in a direction along the inclined surface and in a direction perpendicular to the inclined surface. Furthermore, a plurality of drills are arranged in a line in accordance with the arrangement pattern determined corresponding to the cylinder bore pitch of the plurality of types of cylinder blocks, and each arrangement pattern is set in the arrangement direction. drill units installed in a mutually overlapping state, the axes of each of the drills being parallel to the inclined surface, and the direction in which the drills are arranged parallel to a direction perpendicular to the direction of inclination of the inclined surface. A cylinder block diagonal hole machining device characterized in that it is installed in such a manner that