SU1708529A1 - Device for machining piston rings to external diameter - Google Patents

Abstract

The invention relates to a machine tool industry and can be used for profile turning of round piston rings for internal combustion engines. The purpose of the invention is to increase productivity, etc.; the device contains a base 1, on which the processing unit 2, the magazine 3 and the piece-setting mechanism k are installed. The machining unit 2 contains a sleeve 5 in the holder 6, clamping flanges, tool holders E and 11 of the turning and profile cutter and a hammer line. On the sleeve 5 is made the lead-in ends and calibrating sections, between which the groove. In the sleeve. Made windows for the passage of incisors. The tool holder of the profile tool is equipped with a spring-loaded roller, constantly in contact! with a ruler. Store 3 is mounted on the base with a clearance for free passage of the ring. The piece-feed mechanism includes a gate 25 and an actuator 26 for its movement. 5 Il.S < & (L25 1Fig.1SOel yozo

Description

The invention relates to machine tool industry and can be used for profile turning of round internal combustion engine piston rings. 5

A known machine for processing round piston rings in outer diameter, containing a base mounted on it with the possibility of reciprocating. Movement perpendicular to the axis of supply of the sleeve with an inlet cone and a calibrating section made on its inner surface, two clamping flanges mounted coaxially with the sleeve with the possibility of rotation and reciprocating movement, as well as processing tools in the form of turning and profile cutters with tool holders and drives for their longitudinal and transverse movement. However, this device is characterized by design complexity due to the presence of separate drives for moving the toolholders of the turning tool (to eliminate risks on the machined surface and tool breakage) and the profile tool (for forming the profile); reduced productivity due to loss of time for moving the turning tool.

The purpose of the invention is to increase productivity and simplify the design.

The goal is achieved by the fact that a device containing a base mounted on it with the possibility of reciprocating movement perpendicular to the axis of supply of the sleeve with the main inlet cone and the main calibrating section made on its inner surface, two clamping flanges mounted coaxially with the sleeve with the possibility rotation, and one of them with the possibility of reciprocating movement, processing tools in the form of a turning and profile cutters with tool holders, is equipped with a fixed it is relative to the sleeve with a carbon ruler, the sleeve is made with an additional lead-in cone and a calibrating section located opposite the main one, and in the central part of the sleeve there is a bore larger than the calibrating section, of a diameter and a window for the passage of said cutters, while the tool holder of the turning tool is rigidly fixed relative to sleeves, and the tool holder of the profile cutter is mounted on the base with the possibility of radial reciprocating movement by means of a carbon ruler. Due to the fact that the turning tool is installed in the movable perpendicular axis of the piston ring supply sleeve, there is no need to drive its feed. The execution of the sleeve with opposed entry cones and calibrating sections eliminates the need for a drive of the transverse feed of the turning cutter, since such a design of the sleeve allows two rings to be machined “in the pass”, without leaving a 2Q risk mark on the surface of the cutter exit. The installation of the copy line motionless relative to the sleeve eliminates the need for a separate drive for feeding the profile cutter. The absence of displacements of the cutters by the indicated drives makes it possible to increase the productivity of the device and simplify its design.

Figure 1 shows the device, ed General view; figure 2 and 3 is a section aa in figure 1; figure 4 is a section bB in figure 1; figure 5 - section bb in figure 1.

The device comprises a base 1, 33 along the longitudinal axis of which a processing unit 2, a magazine 3 and a piece feeding mechanism 4 are placed on it.

The processing unit 2 contains 40 sleeve 5, mounted in a ferrule 6, clamping flanges upper 7 and lower 8, tool holder 9 of the turning tool 10, tool holder 11 of the profile tool 12 45 and a copy ruler 13 installed. The end surfaces of the sleeve 5 are provided with opposed entrance cones 14 and calibrating sections 15, between which 'a groove 16 is made of a larger diameter, On the side of each of the ends of the sleeve 5 there is a pair of diametrically located guides of the protrusion 17. In the central part of the groove 1 6 is made squo a window 18 for the passage of the turning tool 10 installed in the tool holder 9, mounted stationary relative to the sleeve 5 on the holder 6, In another section along the perimeter of the sleeve 5 there is a through window 19 for the passage of the profile tool 12 installed in the tool holder 11 mounted with a j-j the possibility of radial movement in the bracket 20, mounted on the base 1. The tool holder 11 is equipped with a roller 21, which is in constant spring-loaded contact with the copy ruler 13, which is fixed jg but relative to the sleeve 5 on the holder 6. 3 olive with the flanges 7 and 8 for mounting and clamping rings porshnezogo mounted coaxially with the sleeve 5 and are able to rotate. In addition, the lower flange 8 performs small (up to 1 mm) reciprocating movements. In, the cage 6 between the guide protrusions 17 located on the lower end of the sleeve 5, there is made 20 a through groove 22 for the passage of the piston rings, forming jumpers connecting the upper and lower parts of the casing 6. Shop 3 contains a pin 23 with an orientation key 24 and is attached · 25 on the base 1 with a clearance for easy passage of the piston ring. The piece feed mechanism 4 has a gate 25 with a drive 26 of its longitudinal movement. thirty

In the initial position, the gate 25 is retracted to the extreme left position, the sleeve 5 "to the lowest position, in which the guide protrusions 17 are in the receiving zone of the piston ring, and the tool holder 11 of the profile cutter 12 is in the extreme right position, the clamping flange 8 is lowered and is 0.5 “1 mm below the base surface of the base. dd

The device operates as follows.

When the drive 26 is turned on, the gate 25 captures the piston ring located on the base surface of the base 1 under the magazine 3 and feeds it to the processing unit 2. First, the piston ring falls between the guide projections 17 of the sleeve 5, which pre-compress the ring and center relative to the flanges 7 and 8. When moving upward, the sleeve 5 presses the ring against the flange 7, and then with its inlet cone 14 compresses it to the nominal (calibrating) size and pushes it into the calibrating section 15. The lower flange 8 is turned on, which When it moves upward, it presses the compressed piston ring against the end surface of the flange 7 with a force sufficient to hold the piston ring in such a compressed state. With further movement of the sleeve 5 upward, the piston ring gets into the bore 16. The rotation of the flange 7 is turned on, which entrains the piston ring and the flange 8. The allowance is removed by the turning cutter 10. Continuing the upward movement, the sleeve 5 simultaneously moves the copy ruler 13, which, acting with its carbon surface onto the roller 21, it radially feeds the tool holder 11 with the cutter 12. Profiling of the working surface of the piston ring occurs. Then the roller 21 rolls off the carbon surface of the line 13 and, under the action of the spring, the tool holder 11 with the cutter 12 is retracted from the machined piston ring. The sleeve 5, continuing to move upward, passes the processed piston ring through the lower gauge section 15 and the inlet cone 14, after which the lower flange 8 is retracted and the drive 26 is turned on, which, using the gate 25, feeds the next piston ring from under the magazine 3 to the processing unit 2 through the slot 22 cut into the holder 6 onto the guide projections 17 of the sleeve 5. In this case, the newly supplied ring pushes the processed piston ring into the hopper (not shown). Then, the feeding of the clip 6 with the sleeve 5 is turned on, only now down, and the whole process is repeated.

Technical and economic efficiency from the use of the proposed device is to increase productivity and simplify its design, which leads to lower costs.

Claims (2)

The invention relates to a machine tool industry and can be used for profile turning of round piston rings of a DZS. A known machine for machining round piston rings in outer diameter, comprising a base mounted on it with the possibility of reciprocating perpendicular to the feed axis of the sleeve with a lead-in cone and calibrating section on its inner surface, two clamping flanges mounted coaxially with the sleeve so as to rotate and reciprocating movement, as well as machining tools in the form of turning and profile cutters with tool holders and their drives, odol and p transverse movement. However, this device is characterized by the complexity of the design, due to the presence of separate drives for moving the tool holders of the turning tool (for exceptions on the machined surface and for tool breakage) and the profile cutter (for forming the profile); decrease in productivity due to the loss of time to move the turning tool. . The purpose of the invention is to increase productivity and simplify the design. The goal is achieved by the fact that the device containing the base mounted on it with the possibility of reciprocating is moved | / perpendicular to the feed axis of the sleeve with the main lead-in cone and the main calibrating section on its inner surface and two clamping flanges mounted coaxially with a rotatable sleeve, one of which with the possibility of reciprocating movement, machining tools in the form of turning and shaped cutters with cutter holders movable relative to the liner with a copier ruler, the liner is made with an additional lead-in cone and a calibrating section located opposite to the main one, and in the central part of the liner there is a bore larger than the calibrating section of the diameter and the window for the passage of the said cutters, while the tool holder of the pd cutter is rigidly fixed the liner, and the tool holder of the profiling cutter is installed on the base with the possibility of radial reciprocating movement by copying the ruler. Due to the fact that the turning tool is installed in the movable perpendicular axis of the supply of the piston rings to the sleeve, there is no need to drive it to a camber. Execution of a liner with oppositely placed lead-in cones and a gauge in the Leaf sections excludes the need to drive transversal housings of the turning cutter, since this execution of the liner makes it possible to process the passage of two rings without leaving a cutter on the surface. Installed (; (and the smooth lines are fixed relative to the liner eliminates the need for a separate drive to feed the profile cutter. Lack of movement of the incisors by these drives allows increasing the device performance and simplifying its design.,. Figure 1 shows the device, general, appearance; figure 2 and 3 is a section A-A in Fig. 1. In Fig. A is a section B-B in Fig. 1. In Fig. 5 is a section B-B in Fig. 1. The device comprises a base 1, along the longitudinal axis of which is It houses the processing unit 2, store 3 and the mechanism of the piece-feed .. The machining unit 2 contains a sleeve 5, fastened in the holder 6, arranged with the upper 7 and lower 8 clamping flanges coaxially with it, the tool holder 9 of the turning tool 10, the tool holder t1 of the profile tool 12 and the gauge line 13. The end faces of the sleeve 5 are provided with opposing spacers cones 14 and calibrating sections 15i between which a larger diameter notch 16 is made. On the side of each of the ends of the sleeve 5 there is a pair of diametrically disposed guides 17. In the central part of the aperture 16, Airway 18 for the passage of the turning tool 10, mounted in the tool holder 9, mounted stationary Relative to the sleeve 5 on the yoke 6 On the other section along the perimeter of the sleeve 5, 1 through window 19 is made to pass the profile tool 12 installed in the tool holder 11 mounted with the possibility radial movement in the bracket 20, mounted on the base 1. The tool holder. F is provided with a roller 21, which is in constant spring-loaded contact with a ruler 13, which is fixedly mounted relative to the sleeve 5 on the holder 6. The clamping flanges 7 and 8 for mounting the clamp of the lash ring are mounted coaxially with the sleeve 5 and have the possibility of splicing. In addition, the lower flange 8 makes small (up to 1 mm) reciprocating movements In the holder 6 between the guide sections 17 located on the side of the lower end of the sleeve 5 there is a through groove 22 for passage of the piston rings, forming jumpers connecting the upper and lower parts of the casing 6. The magazine 3 contains a pin 23 with an orientation key 2 and is fixed on the base 1 with a clearance for an easy passage of the piston ring. The piece-feeding mechanism has a width 25 with a drive 26 for its longitudinal movement. In the initial position, the gate 25 is retracted to the extreme left position, the 5 gil is at the lowest position, in which the guide lugs 17 are in the receiving area of the piston ring, and the tool holder 11 of the profile cutter 12 is in the extreme right position, the clamping blade 8 is lowered and is lower than the base surface level by 0.5-1 mm. The device works as follows. When the actuator 26 is turned on, the gate 25 catches the piston ring located on the base surface of the base 1 under the magazine 3 and supplies it to the processing unit 2. Initially, the piston ring falls between the yap protrusions 17 of the sleeve 5 which pre-compresses the ring and is centered relative to the flanges 7 and 8. When moving up, the sleeve presses the ring to the flange 7, and then with its lead-in cone lA compresses it to its nominal (calibrating) size and pushes into the calibrating section 15. The lower flange 8 is fed in, which, during its course, presses the crimped piston 3 upwardly against the end surface of the flange 7 with a force sufficient to hold / hold the piston ring in such crimping condition. Upon further upward movement of the sleeve 5, the piston ring enters the bore 16. Rotation of the flange 7 entrains the piston ring and the flange 8, rotates. Rotation of the piston ring 10 is continued. Continuing upward movement, the sleeve 5 simultaneously moves its pattern. the copier surface on the roller 21, provides a radial feed of the tool holder 11 with the cutter 12. The profiling of the working surface of the piston ring takes place. Then the roller 21 rolls off the copier surface of the ruler 13 and under the action of the spring, the tool holder 11 with the cutter 12 is retracted from the machined piston ring. The sleeve 5, continuing upward movement, passes the machined piston ring through the lower calibrating section 15 and behind the running cone AND, after which it is removed, the lower flange 8 and the actuator 26 is turned on, which with the help of the gate 25 feeds the next piston ring from under store 3 to the processing unit 2 through the slotted in the casing 6 pa 22 on the guide protrusions 17 of the sleeve 5. At the same time, the newly supplied ring pushes the processed piston ring into a hopper (not shown). Then, the feeding of the sleeve 6 with the sleeve 5 is turned on, only now it is already down, and the whole process is repeated. Technical and economic efficiency from the use of the proposed device is to increase productivity and simplify its design, which leads to cost reduction. The invention The device for processing piston rings in outer diameter, comprising a base mounted on it with the possibility of reciprocating movement perpendicular to the feed axis of the sleeve with the main Entry cone and the main calibrating section on the inner surface, two clamping flanges installed coaxially with the sleeve rotatably, one of which is installed with the possibility of reciprocating movement, and machining tools in the form of turning and profile It is characterized by the fact that, in order to increase productivity, it is equipped with a fixed ruler fixedly fixed relative to the sleeve, a sleeve is made with an additional lead-in cone and a calibrating area located opposite to the main one, and in the central part of the sleeve there is a bore larger than the calibrating section, the diameter and the window for the passage of the said cutters, while the tool holder of the turning tool is rigidly fixed relative to the sleeve, the tool holder of the profile tool is installed a base with a radially reciprocating movement by a guiding bar. 2 1 7CI "529 7-l iSS; / oj / wyHlr4r4 I У // 77 ///////////////// L fug: bb .f "M