JPS61244461A - Tool position adjusting device - Google Patents

Abstract

PURPOSE:To simplify the adjustment of position of a tool, by using an axially movable cylindrical shaft as a support shaft, and by enabling a predetermined tool to slide in the axial direction of the above-mentioned support shaft while the cylindrical shaft is disposed therein with slide members which engage with the above-mentioned tool. CONSTITUTION:A support shaft 5 is moved in association with the rotation of a first screw shaft 16, and a middle tool attached to the support shaft 5 unmovably in the axial direction is set at a position which coincides with a journal section Wb or a position having a distance (l1) from the axial end of a crankshaft W. Then a second screw shaft 18 is rotated to move slide members 13, 13 in the approaching or separating direction with respect to each other, tools on both sides are set at positions having a distance (l2) from the middle tool 6. Accordingly, even if the distances (l1, l2) are different from each other due to the change of the type of machines, the adjustment of position of each tool 6 may be simply made, and therefore, this working can be efficiently made to enhance the productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tool position adjustment device that is mainly applied to a device that performs rolling or polishing of a pin portion or a journal portion of a crankshaft.

(Prior Art) In a conventional crankshaft rolling processing device, a plurality of tools for rolling processing are supported at intervals in the axial direction on a support shaft provided parallel to the longitudinal direction of the crankshaft as a workpiece. It is known that a tool is used to roll each pin portion and each journal portion of a crankshaft, and in this case, each tool is positioned in the axial direction by a spacer or a stopper attached to the outer periphery of the spindle. generally.

(Problem to be solved by the invention) In the above-mentioned method, when adjusting the position of each tool in preparation for machining a crankshaft with a different arrangement pitch of pin parts and journal parts, work such as replacing spacers is required. However, in order to improve productivity, it is desirable to be able to perform position adjustment without requiring such work.

An object of the present invention is to provide a device that meets such demands.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a support shaft provided parallel to the longitudinal direction of a workpiece that supports a plurality of tools at intervals in the axial direction. The support shaft supports a plurality of tools at intervals in the axial direction. The movable tool is configured to be slidable in the axial direction, and each slide member that engages with each of the movable tools is provided within the support shaft so as to be movable relative to each other in the axial direction.

(Example) An illustrated example in which the present invention is applied to a crankshaft rolling processing device will be described.

Referring to FIG. 1, (1) is a machine base, +21+31 is a spindle base and a tailstock provided on both sides of the machine base (1), and a work chuck (2&3) provided on the spindle base (2) is shown.
) and the tailstock shaft (5 &) provided on the tailstock (3), a crankshaft 7) W as a workpiece can be freely set, and furthermore, supports +4) (4) are installed on both sides of the machine (1). A support shaft +51 is installed in parallel to the longitudinal direction of the crankshaft 7)W between both supports +4) (4), and a plurality of tools (6) for rolling processing are installed on the support shaft (5). were supported at intervals in the axial direction.

In addition, in the illustrated crankshaft W, the pin part W& is 1.
This is for a two-cylinder engine provided in a pair, and both bin portions Wa
, Wa and the intermediate journal portion wb are provided with three tools (6).

As shown in FIG. 2, the tool (6) includes a clamp arm +81 +81 at the lower end that grips the pin portion Wa and the journal portion wb via a roller (7), and its opening/closing cylinder (9).
A guide plate αυ extending upward is attached to a tool head α1 having Guide frame C13GC The tool (6) is inserted into the guide plate αυ so as to be slidable in the vertical direction, and thus the tool (6) is rotated due to the rotation of the guide frame (13), and the guide frame ( The vertical movement guided by 13 is given.

In the drawing, (11a) indicates an elongated hole through which the support shaft (5) formed in the guide plate αυ is inserted.

Although the above is not particularly different from the conventional one, in the illustrated embodiment, in accordance with the characteristics of the present invention, the support shaft (5) is constructed of a cylindrical shaft that is movable in the axial direction as shown in FIG. Of the three tools +61161161 mentioned above, the pin part Wa
The two tools [6] (6) on both sides in the axial direction for machining are configured as movable tools that can freely slide in the axial direction with respect to the support shaft (5), and A pair of slide members a3αJ that engage with both tools [6) and 16) are provided so as to be relatively movable in the axial direction.

To explain this in more detail, in the illustrated case, both the pillars +4
) A long guide sleeve Iα4 is fixed in the axial direction at +41, and the support shaft (5) is inserted into this so as to be slidable at both ends thereof and prevented from rotating by a key α9, and furthermore, both sleeves ( The first screw shaft (7) (15) which is screwed onto one end of the support shaft (5) is supported on one side of the shaft (5).
The support shaft (5) can be moved in the axial direction by rotating the support shaft (5) using, for example, a handle aη, and the other end of the support shaft (5) has a A pair of threaded parts (18
a) (18b) and each threaded portion (18a) (
18b), each nut member screwed together constitutes the slide member a3α row, and each slide member is further provided with an axial direction formed on the support shaft (5) as shown in FIGS. 3 and 4. The protrusion (13a) projecting outward is bolted through the longitudinal guide hole a9, and each slide member (1
3 is fixed to the support shaft 153 at the protrusion (13a) and engaged with the guide frame (121) of each tool (6) on both sides in the axial direction, and thus the second threaded shaft (tl
According to the rotation from one side to the other, both slide members (
13 (13) are moved relative to each other in the direction in which they move away from each other and in the direction in which they approach each other, and as a result, the tools (6) (6) on both sides in the axial direction are moved axially outward and inward through the respective guide frames α2. The distance between the tools 161 and 61 is increased or decreased.

In addition, the tool (6) in the axially intermediate position in the figure is supported immovably in the axial direction by stopper brackets on both sides of the intermediate portion of the support shaft (5) that sandwich the guide frame cI2. Furthermore, the spindle (5) is provided with an outer stopper QQ facing each of the stoppers (a), and these stoppers allow the spindle (5) to be manually operated by the first and second screw shirts (1G (181)
This makes it possible to perform positioning when moving the tool (6).

Although the above description has been made of a device having three tools +61161 (61), the present invention can be similarly applied to a device having four or more tools (6), and FIG.
(An example is shown in which 61161161 is provided. In this example, a total of three tools, two on the left and one on the right in the figure (61161161 is configured as a movable tool, and the support shaft (5)
A first threaded shaft (22J) screwed into the crank part of the guide sleeve circle is supported on the outside of the left end of the shaft so that the support shaft (5) can be moved in the axial direction by its rotation. At the left end of the spindle (5) are the two left tools (61 (6)
A second threaded shaft having a pair of threaded portions (25a) and (25b) with different pitches that are screwed into each other on the slide member (13α) corresponding to the second threaded shaft (13α) is pivotally supported.
C) By rotating from one side to the other, both tools +6) t
61 is moved axially outward and inward while increasing and decreasing the opening therebetween, and a right tool (
A third threaded shaft screwed onto the slide member corresponding to item 6) is pivotally supported, so that the tool (6) is moved in the axial direction by its rotation.

In addition, in the illustration, the second tool (6) from the right is attached to the spindle I.
Although the FI is fixedly supported in the axial direction, it is also possible to configure the FI as a movable tool.

(Example K1 of the embodiment of the present invention shown in FIGS. 1 to 4)
．． To explain based on this, if the distance from the shaft end of the intermediate journal part wbO of the crankshaft 7) W is l3, and the distance between the journal part wb and each bottle part W& on both sides thereof is 6, first (5) is moved by the rotation of the first screw shaft αe, and the intermediate workpiece X (6), which is immovably supported in the axial direction by the support shaft (5), is positioned to match the journal part wb;
In other words, the distance from the end of the crankshaft W! , and then rotate the second screw shaft hitter to move each slide member α3 (13) toward or away from each other, and move the tools L6 (16) on both sides to the middle tool (6). ) is positioned at a position where the distance from the workpiece is To.Thus, by changing the model of the workpiece, A! 1,! ,
Even if the dimensions of the tools (6) are different, the positions of the tools (6) can be adjusted without requiring troublesome work such as replacing spacers as in the conventional case.

(Effects of the Invention) As described above, according to the present invention, the arrangement pitch of the tool and the axial position of the entire tool relative to the work can be determined by moving the support shaft and moving the slide member within the support shaft that engages with the movable tool. This has the effect of improving productivity as the tool position adjustment work can be done efficiently in a short time without requiring troublesome work such as replacing spacers as in the conventional method.

[Brief explanation of drawings]

FIG. 1 is a front view of a rolling processing device equipped with the device of the present invention, and FIG. 2 is a sectional side view taken along line It-II in FIG. 1.
The figure is an enlarged cutaway front view of the main part, and Figure 4 is the ■- of Figure 3.
(2) Line-cut side sectional side view Figure 5 is a cut-away front view of the main part of a modified example. W...Crankshaft (work) (5)...Spindle (6)...Tool (13...2 people outside the slide member Fig. 2)

Claims (1)

[Claims] In a device in which a plurality of tools are supported at intervals in the axial direction on a support shaft provided parallel to the longitudinal direction of the workpiece, the support shaft is composed of a cylindrical shaft that is movable in the axial direction, and The tool is configured as a movable tool that is slidable in the axial direction with respect to the support shaft, and each slide member that engages with each of the movable tools is provided within the support shaft so as to be movable relative to each other in the axial direction. A tool position adjustment device characterized by: