JPH04130148U - Machine tool measuring instrument mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To shorten workpiece measurement time and improve measurement accuracy. [Structure] A hollow support 5 is erected on the whetstone 3, a turret whetstone 6 is rotatably mounted on the support 5, and the base end of the swinging arm 12 of the measuring instrument 13 is equipped with a measuring part 13a at the tip. Pivotally attached to the pillar 5. [Effect] The measuring device 13 is independent from the turret grindstone head 6.
can be operated.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a tool rest equipped with a swivel base, and a tool such as a single or multiple bits and grindstones. Machines such as lathes and grinding machines that are equipped with and measuring instruments and can be used as appropriate. Concerning the mounting structure of measuring instruments in machines.

0002

[Conventional technology]

Conventionally, in the machine tool, the measuring instrument 13 is mounted on the swivel table 6 like the tools, as shown in FIG. It is attached to a predetermined station of The turning table 6' is indexed to the required tool position for machining, and when measuring, the same Measurements could be taken by locating the 6' rotating platform to the measuring instrument position.

0003

[Problem that the idea aims to solve]

Conventionally, the measuring instrument was mounted on the same swivel base as the tools, so each time a measurement was made, the tools Changing the index, such as indexing the swivel base to the measurement position Therefore, the time required for measurement becomes longer. Repeat the measurement again. If this happens again, the accuracy of the indexing accuracy of the swivel base will deteriorate, and this will affect the position of the measuring instrument. The farther the position is from the center of rotation of the swivel base, the more noticeable this becomes.

0004

[Means to solve the problem]

The present invention is a measuring instrument mounting structure that achieves high measurement accuracy in a short time. , its configuration consists of multiple tools attached to each station on the tool rest of the machine tool. A swivel table equipped with an indexing mechanism and movable between the measurement position and the evacuation position. This is because the measuring devices can each be operated independently.

[0005]

[Effect]

During machining, the position of the necessary tools can be determined by rotating the swivel table. During measurement, the measuring instrument can be operated independently without rotating the swivel table.

[0006]

【Example】

The most preferred embodiment of the present invention will be described with reference to the drawings. In the NC grinding machine shown in Fig. 1, 1 is a bed, and 2 is a U-axis at one end of the bed 1. A headstock 3 is provided at the other end of the bed 1 so as to be movable in the Z-axis direction. This is a movable grindstone head. The headstock 2 has a rotatable main shaft that is a Z-axis. A chuck 4 for gripping the workpiece W is mounted on the tip of the main shaft on the turret side. Be prepared.

[0007] A hollow support 5 is installed on the whetstone head 3 as shown in FIG. A rotating turret grindstone head 6 is provided. The turret whetstone head 6 has multiple machining tools. Tool mounting stations are set, and these stations include, for example, an inner grinding shaft 7. The motors 7a and 8a are attached to the outer grinding shaft 8, and the shafts 7 and 8 are opposite Although not shown in the diagram, various tools are placed in a designated position, such as by placing them so that they protrude in the opposite direction. It is worn in a posture. The turret grindstone head 6 is connected to a position indexing machine via a gear mechanism 9a. Designated for tools installed at each station that are rotated by a motor 9 equipped with The crank is operated by a cylinder mechanism 10 built into the column 5. It is clamped by the clamp plate 10a. Hydraulic pressure is used to operate the cylinder mechanism 10. It is.

[0008] A fixed base 11 is provided at the upper end of the support column 5, and the base end of the fixed base 11 is attached to the fixed base 11. A measuring part 13a is provided at the tip of a swinging arm 12 which is pivotally attached to the headstock 1 side of the fixed stand 11. A measuring device 13 is attached, and the movement of the swinging arm 12 causes the measurement unit 1 to 3a moves between the measurement position and the retreat position. In the embodiment, the measurement unit 13a has, for example, 0 points. A micrometer that emits an output signal is used. Touch sensors and other measurement means are also used.

[0009] The NC grinding machine configured in this way allows the measuring instrument to avoid interference with the tool during machining work. Move the tool to the retracted position and use the turret grindstone head to select the tool and perform grinding. No, when taking measurements, advance the measuring instrument to the measuring position and place it on the turret grindstone head. Measurements can be made regardless of the starting position.

0010 To explain the specific measurement operation, the headstock is moved in the X-axis direction, that is, the outer grinding position and the inner grinding position. For example, while the headstock can be positioned at the outer grinding position, the turret can be moved to the The external grinding wheel attached to the turret grinding wheel head is indexed, and the workpiece grasped by the chuck is Rotate the wheel and cut its outer periphery. When machining this workpiece, the measuring device Move the measuring section to a position where it will not interfere with the tool. When processing is completed, split the whetstone Retract the tool rest while keeping the extended position, and then touch the measuring part of the measuring device to the machined surface. Move the workpiece to the measurement position where it touches, rotate the workpiece again, and measure it.

[0011] In the above example, a grinding machine is taken as an example, and a measuring instrument is attached to a grinding wheel head, which is a tool rest. Although the case described above is applicable to machine tools in general, the mounting position of the measuring instrument is If it is a fixed part of the table, you can select a point other than the center of rotation of the swivel table, and the measuring instrument , In addition to the swing arm mechanism, rotation, slide, link mechanisms, etc. can be used. Furthermore Locators, sizing devices, outer checkers, touch probes, etc. are used as measuring instruments. mounting, pre-processing check, positioning, dimensional control during grinding, cylinder, run-out accuracy, It is also possible to check dimensions after grinding.

0012

[Effect of the idea]

According to this invention, measurement is possible independently without being affected by the movement of the swivel table or the index position. can be carried out by oneself, thereby increasing the level of measurement accuracy and reducing the time required for measurement. can also be significantly shortened.

[Brief explanation of drawings]

[Figure 1] N implementing the measuring device mounting structure according to the present invention
It is an explanatory view showing a C grinder.

FIG. 2 is an explanatory diagram of a measuring instrument mounting structure.

FIG. 3 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1... Bed, 2... Headstock, 3... Grinding wheel head, 4... Chuck, 5... Strut, 6... Turret grinding wheel head, 7... Inner grinding shaft, 7a... Motor, 8... Outside Grinding shaft, 8a...Motor, 9...Motor, 9a...Gear mechanism, 10...Cylinder mechanism, 10a...Clamp plate, 11...Fixing base, 1
2. Swing arm, 13. Measuring instrument, 13a. Measuring section, W. Work.

Claims (1)

[Scope of utility model registration request] Claim 1: A plurality of tool mounting stations are set up, and a measuring unit moves between a measurement position and a retracted position to a tool rest having a swivel base equipped with an indexing mechanism for the tools mounted at each station. A measuring instrument mounting structure for a machine tool, in which a moving measuring instrument is provided independently from the turning table.