SU1371887A1 - Spindle device - Google Patents

Abstract

The invention relates to a machine tool industry and can be used to adjust the position in space and fix the axis of a machine spindle. The aim of the invention is to increase the accuracy and shorten the adjustment time by ensuring that the position of the spindle axis of the machine changes in a given direction with the same location of the force action organ. The adjustment mechanism is made in the form of a non-working end of spindle 3 mounted on a protruding end of sleeve 2 with a disk 4 tight over a narrow cus that has a small rigidity in the axial direction. With the inner side of the peripheral flange of the disk 4 is in contact with the possibility of a force impact on him one end of the two shoulders of the pivot arm 6. Its other end is in contact with the pressure ring 9 connected to the coaxial ring 10 axis 11 of the vrasen. A straight cone 13 is inserted between the rings with the possibility of mixing in the diametral direction of the rings. The disk 4 is magnetized to the magnetic plate 5 mounted on the hub 2. If it is necessary to move the spindle end in a given direction, the ring 7 with the lever 6 mounted on it is rotated at a predetermined angle, the disk 4 associated with the lower spindle end is stirred. 1 hp f-ly, 13 ill. (L

Description

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11-66) The plant belongs to mechanical engineering and can be used in all sectors of the national economy for processing flat parts of exact shape.

The aim of the invention is to reduce the time and improve the accuracy of adjusting the axis of the spindle of the machine by providing the ability to change the position of the axis of the spindle of the machine in a given direction.

FIG. I shows the device, the general view; in fig. 2 is a section A-A in FIG. one; on fi1. 3 is a section BB in FIG. 2; in fig. 4 section BB in FIG. one; on

FIG. 5 is a cross section of the FIG. I; in fig. 6 is a section D-D in FIG. five; in fig. 7 is a section E-E in FIG. one; in fig. 8 is a section of a Ж Ж in FIG. I; in fig. 9 is a cross section of 3 3 in FIG. one; in fig. 10 is a section through AND AND FIG. one; in fig. 11 - a scheme for determining the relative position of the axis of the machine spindles in space; in fig. 12 - (. The reading of K K on phi 1. I 1; in Fig. 13 - the scheme of operation1) 1 of the power parallel displacement of the pressure ring.

The device consists of a frame 1 with a sleeve 2 fixed on it, in which P1-spindle 3 is installed, with a tension on narrow), located at the working end with the possibility of swinging its non-working end within the gap in the sleeve. From the hub of the non-working end of the belt, with tension over the narrow yci: 1 1 h, disk 4, which is magnetized to an annular magnetic plate 5 attached to the hub. A flange is made on the periphery of the disk, from the inside of which the poi o is positioned with a force on the disk in its diametrical direction one end of the two shoulders lever 6 mounted on the ring 7, installed on the non-working surface of the magnetic plate with the possibility of circular rotation and equipped with an angular scale , and on the pointer there is a pointer 8 angled 11G) .1Г1, to (.- | 11 rings 7. Second) end of the lever is positioned with the possibility of contact and transfer of the single action from the end surface of the pressure ring 9, mouths : wed1 ° with a clearance otn (x: it is close to the surface of the sleeve and connected to a crl with a co-rotating turning ring 10 axis of rotation 1 1, pa) a. 1le, 1 of their chords, the new ring is mounted on a diametrically LSI 12 Kachani mounted in a sleeve with a parallel arrangement with the axis, C1) 1 D1P1 of yushi shaft. Between the rings on the side opposite to the axis connecting them, a straight outer cone 13 is inserted, having a threaded connection with a bracket 14 mounted on the hub. POSTONNPO1CH) contacting the rings with a ring cone connected springs13

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stretch (not shown). To reduce the axial stiffness of the central part of the disk 4, an annular groove R.

The adjustment mechanism of the device consists of three assembly units.

The rotary mechanism for moving the non-working end of the spindle consists of a two-arm rotary lever 6 mounted on a ring 7 having a dial and mounted coaxially with the sleeve 2 with the possibility of circular rotation. The said lever is mounted to move the non-working end of the spindle 3 through the disk 4 in a plane perpendicular to the spindle axis in any predetermined radial direction of the disk mounted coaxially on the non-working end of the spindle. If there is a fixed point-center of swing of the working end of the spindle, moving its non-working end in any given direction corresponds to the inclination of the spindle axis in the same direction.

The mechanism of the force parallel movement of the pressure ring consists of a pressure ring 9, installed with a gap relative to the outer surface of vtu.1kn 2 and connected to the edge with a coaxial rotating ring 10 axis and a shaft parallel to their chords; the rotary ring is installed with a gap relative to the outer surface of the sleeve on the diametrical axis 12 of the swing, mounted in the sleeve in a parallel arrangement with the axis connecting the rings. Between the rings on the side opposite to the axis connecting them, a force action organ is inserted - a straight loaded cone 13 having a threaded connection with a bracket 14 mounted on the sleeve. For the purpose of constant contact of the rings with the ring cone, they are connected by a tension spring (not shown).

With the help of this mechanism, the movement of the end of the pivot arm 6, which is in contact with the end surface of the pressure ring, is achieved at a fixed location of the force action organ. The latter is important from the point of view of reducing the overall dimensions of the structure and improving the serviceability of the machine. In addition, strictly parallel movement of the face surface of the pressure ring ensures a constant gear ratio of the control unit for any position of the pivot arm that is radial with respect to the sleeve, which guarantees the accuracy of the control unit and, therefore, the accuracy of the machine setting.

The mechanism for fixing-fixing the position of the 1ppind axis, which was achieved during regulation, consists of a non-working end of the cisdell 3 installed on the protruding from sleeve 2 and coaxially with it

a narrow disk with a disk 4, which is magnetized to an annular magnetic plate 5 fixed coaxially on the sleeve.

This mechanism achieves the retardation of the disk 4 being displaced during the regulation process, and also provides a constant combination of the processes of ending the movement, fixing and fixing this disk in the final position without creating uneven internal stresses in the contacting surfaces of the magnetic plate and the disk . This ensures the constancy in time achieved when adjusting the position of the spindle axis. The disk braking increases the accuracy of adjusting the position of the spindle axis and reduces the adjustment time by ensuring the immobility of the disk and, consequently, the adjustable non-working end of the spindle after each movement, performed by the joint operation of the mechanisms for moving the non-working end of the spindle 1 and force parallel movement pressure ring. Through the use of fasteners working and non-working ends of the spindle 3, respectively, in the sleeve 2 and the disk 4 with the help of landings with tension, as well as the ring magnetic plate 5, and in the case of thermal stability and bolts 15, the rigidity of the mounted head is high in all directions in spindle hub. This ensures that it provides little flexibility in all directions. Therefore, the spindle movements, which may arise from inertial forces and cutting forces during the operation of the machine, will be very small and will practically not affect the accuracy of the dimensions, shape and relative position of the machined surfaces of the parts. Thus, the use of the proposed device ensures practical independence of the precision processing parameters from the force factors of the process, i.e. The position of the spindle relative to the tuning elements of the machine, achieved during the adjustment, remains the same during the machining process.

The device works as follows.

A grinding wheel is removed from the tool upper spindle (Oz-Og axis) and a mandrel with an indicator is installed in its place, and a reference plane-parallel plate with an angular scale located on the axis of rotation of the tool spindle O2-O2 is installed on the lower spindle (O | -Oi axis) i.e. at the center-to-center distance A of the machine (Fig. 11). By lowering the upper tool spindle, the indicator is brought into contact with the reference plate. The circular rotation of the mandrel determines the difference between the maximum and minimum indicator readings. The maximum value is taken indication

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corresponding to its maximum distance from the plane of the reference plate at the angle of rotation of BWO. Is determined by ug. Yuayo iio. Io-zhenie mandrel corresponding to the maximum indication of the indicator on the corner pzhale reference plate. For example, with a nuler PM the value of the angular scale located on the center line of the machine and its direction counterclockwise, the angle of the mandrel corresponding to the maximum indicator reading (m. A) is a (Fig. 11). This means that the axis of the upper spindle Oj -O-2 () mk.1oni. from paralla: 1 position relative to the axis of the bottom line O | O. on yro.-i 7 (Fig. 12). The direction of the angular iiiKa; ibi on the ring 7 coincides with the direction njKa, ii.i, applied on the reference plate, i.e. counterclockwise, the zero value of the scale coincides with the center of the two shoulders lever (i, and the angular position of the pole; 8 body relative to the axis O | - Oi is the same as the zero value of the scale at r-t. In a simple condition, the ring 7 is set to a position equal to the angle A. By rotating the cone 13, movement of the disk 4 and, consequently, the non-working end of P1-pin in the direction of the head is achieved. The adequacy of mixing is determined by the indications of the indicator mounted on the mandrel at its circular rotation. a movement is given corresponding to a change in the indicator reading equal to half the deviation from parallelism of the axes measured on the diameter of the indicator indicator. In case of dissatisfaction, 1 leg () of the arrangement of the spindle axes is repeated. The bolts 15 are used in machines working with large grinding forces, i.e., when the force of the magnetisation of the magnetic plate 5 of the disk 4 is insufficient to hold the latter during the grinding process. In this case, before starting the settings, the bolts 15 are undocked, and after adjustment, they are fastened. FIG. 13 given the schema of the work of the force about a pair, h. When the constriction of the arms and the lever b, which reproduces the rotary ring 1 (1, we have), when the cone 13 is moved by I, the right sides of the rings 9 and 10 will move down and up respectively by equal values of h The center of the axis 1 1 due to the equality of the shoulder will move down by the value of h. Then the left side of the ring 9 will also fall by the value of h. Consequently, all the rings 9 will move in parallel downwards by the value of h. Strictly napa, i only is achieved lengths of structural elements denoted by b. The float and () lines indicate the start and end position of the device respectively. The parallel movement of the pressure box, 1b 9, provides a constant gear ratio for the control unit for any angular position of the machine 6.

Claims (2)

1. A spindle device comprising a sleeve fixed on the frame, mounted with a tension on the upper part of a pinch located inside it, the lower end of which is arranged to interact with the position adjusting and fixing mechanism mounted on the sleeve, characterized in that in order to increase the accuracy adjusting the axis of the pinch and reducing the setting time, the mechanism for adjusting the position of the pinch is made in the form of a two-arm swivel lever mounted on the periphery of the ring element, placed concentrically with the sleeve can be rotated relative to it, while the lower and upper ends of the lever are installed with the possibility of contact, respectively, with a shoulder of the disk mounted on the non-working end of the pinch with the possibility of radial movement together with the latter, and the end surface of the pressure ring, freely located on the sleeve and circumferentially connected axis, perpendicular to the axis of the spindle, with a rotary ring mounted on the hub by means of an axis parallel to the axis connecting the ring, and row facing each other surfaces of the rings on the side opposite the axis of the binding rings disposed cone mounted to cooperate with the rings and movable in a direction perpendicular to the axis schpindel. 2. A device according to claim 1, characterized in that it is provided with a magnetic plate mounted on a sleeve with the possibility of constant contact with the disk. .L No. f / b- & Fig.Z Fig 25 Yr FIG. five FIG. 6 F //. 7 MF / /  7 FIG. eight  five -fj AND AND FIG. ten Of Rig 11